Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Diffuser between light source and liquid crystal

Subclass of:

349 - Liquid crystal cells, elements and systems

349056000 - PARTICULAR STRUCTURE

349061000 - Particular illumination

349062000 - With integral optical element for guiding or distributing light from the light source

Patent class list (only not empty are listed)

Deeper subclasses:

Entries
DocumentTitleDate
20100157198BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight unit with uniform brightness (luminance) is disclosed.06-24-2010
20100165248Backlight unit and liquid crystal display device having the same - Disclosed are a backlight unit and a liquid crystal display (LCD) device having the same. The backlight unit comprises an optical source for emitting light, a diffusion sheet for diffusing the light incident thereon from the optical source, a first prism sheet for enhancing brightness of the light diffused by the diffusion sheet to be incident thereon by collecting the light to the front side, a second prism sheet for re-collecting the light collected by the first prism sheet to the front side by refraction, and a micro lens film for refracting the light incident thereon from the second prism sheet.07-01-2010
20100165250Liquid crystal display device with a backlight unit having a diffusion plate - A liquid crystal display device having a direct backlight which uses a high-bright light source achieves both of a high efficiency and thin uniformity. In a liquid crystal display device which includes a liquid crystal panel, and a backlight unit which is arranged on a side of the liquid crystal panel opposite to a display screen of the liquid crystal panel, the backlight unit includes a housing, a plurality of light sources arranged in the inside of the housing, and a diffusion plate which is arranged between the plurality of light sources and the liquid crystal panel, the diffusion plate includes a plurality of light blocking regions at positions corresponding to the plurality of respective light sources, and the light blocking region at a center portion of the housing and the light blocking region at an edge portion of the housing exhibits transmissivities different from each other.07-01-2010
20130083269Compound Optical Diaphragm, Backlight Module and Liquid Crystal Display Device - The present invention discloses a compound optical diaphragm, a backlight module and a liquid crystal display (LCD) device; the compound optical diaphragm comprises at least two cross brightness enhancement films (BEF*2), wherein a DF with high forward penetration rate is attached to the BEFs. The forward penetration rate of the DF with high forward penetration rate is more than 85% and less than 95%. In the present invention, by completely studying the relationship between the forward penetration rate of the DF and the luminance gain of the overall optical diaphragm in the structure formed by the DF and the cross BEFs, the appropriate range of the forward penetration rate of the DF with high forward penetration rate is determined; the optical effect of the DF is guaranteed; the luminance gain of the compound optical diaphragm is obviously increased; and the appropriate luminance of the backlight module is achieved.04-04-2013
20130044278LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display device, display with a wide viewing angle and high color reproducibility is achieved and superior contrast is obtained. In addition, a viewing angle is enlarged without using a retarder. The liquid crystal display device comprises a liquid crystal cell 02-21-2013
20110176088LIGHT DIFFUSION MEMBER, BACK LIGHT ASSEMBLY INCLUDING THE SAME AND DISPLAY DEVICE INCLUDING THE SAME - The light diffusion member includes a light diffusing body and a light diffusing layer. The light diffusing body includes a polymer mixture obtained by uniformly blending a first polymer having a first glass transition temperature and a second polymer having a second transition temperature higher than the first transition temperature. Alternatively, the light diffusing body includes a copolymer prepared from the first and the second polymer. The light diffusing body diffuses an incident light through a light exiting surface. The light diffusing layer is formed on the light exiting surface of the light diffusing body and includes a binder resin having beads. A back light assembly including the light diffusion member and a liquid crystal display device including the light diffusion member exhibit an improved luminance and an improved light diffusing efficiency.07-21-2011
20090195729DISPLAY HAVING INTEGRATED FUNCTIONS IN ONE OR MORE LAYERS - An optical display having integrated functions in one or more layer is disclosed. Specifically, the optical display having two or more of the optical components integrated into a single layer without laminating two different layers of material together. A method of making a wire grids polarizer is also disclosed.08-06-2009
20090207339ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device (08-20-2009
20100085508DISPLAY PANEL AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A display panel includes; a first substrate including glass and having at least one unpolished surface, a second substrate disposed substantially opposite to the first substrate, a liquid crystal layer interposed between the first substrate and the second substrate, a first polarizing plate disposed on an outer surface of the first substrate and including a diffusion layer, and a second polarizing plate disposed on an outer surface of the second substrate.04-08-2010
20080259247LASER BACKLIGHTING FOR DISPLAYS - Displays such as LCD panels are illuminated using frequency-doubled vertical extended cavity surface emitting lasers (VECSELs) as efficient light sources. Visible light from the VECSELs are directed to an illuminating panel using optical fibers and/or optical gratings to provide substantially uniform illumination of the illuminating panel. Visible light from the illuminating panel, which can be provided at a particular number of primary wavelengths by the VECSELs, is then used to illuminate the display.10-23-2008
20080259244LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS HAVING THE SAME - The present invention provides a light source apparatus less costly, capable of being reduced in size and thickness and superior in light combining performance and a display apparatus having the light source apparatus. The light source apparatus has a plurality of light sources different in emission wavelength from each other and a prism sheet having a plurality of mutually parallel fine elongated prisms on at least one surface thereof. Lights from the light sources enter the prism sheet through a light entrance surface of the prism sheet at a predetermined angle and output from an exit surface thereof as color-mixed exiting light. A bandpass mirror is disposed between each light source and the prism sheet to transmit light in a wavelength region emitted from the associated light source and to reflect light in the other wavelength regions.10-23-2008
20100079702SURFACE LIGHT SOURCE DEVICE AND LCD UNIT - The disclosed subject matter includes providing a surface light source device using a plurality of different color light-emitting chips that can emit light with uniform color and a LCD unit having the same qualities. The surface light source device can include a light guide having a light incoming surface and a light-emitting surface, and light sources including the light-emitting chips located adjacent the light incoming surfaces. The light-emitting surface can include a light-mixing area that is spaced a distance L away from the light incoming surface, and the widest interval between the adjacent light-emitting chips is configured to be L/27 or less. Light emitted from the light sources can generate a mixture light with very little color variability in the light-mixing area, and the light can be emitted from the light-emitting surface other than the light-mixing area. Therefore, the LCD unit that includes a LCD located toward the light guide can illuminate the display with uniform color light.04-01-2010
20090122228DIRECT-LIT LIQUID CRYSTAL DISPLAYS WITH LAMINATED DIFFUSER PLATES - In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. The diffuser layer is attached to a substrate which is separate from the light source and the LCD panel, or may be attached to either the LCD panel or, when using a two dimensional light source, to the light source. The other light management layers may also be attached to the separate substrate or to the LCD panel or two-dimensional light source. High levels of illumination uniformity at the LCD may be achieved with a uniform (non-patterned) diffuser, even with relatively low levels of diffusion, when the diffuser is used with a brightness enhancing layer.05-14-2009
20110194049Backlight assembly and liquid crystal display including the same - A backlight assembly includes a light source, a light guide plate configured to receive and diffuse light emitted from the light source, and a mold frame including a central opening part configured to receive the light guide plate, an attachment opening part adjacent to the central opening part, the attachment opening part being configured to receive the light source, and a protrusion in the attachment opening part, the protrusion contacting the light source in the attachment opening.08-11-2011
20130077025BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A backlight module and a liquid crystal display device using the same are provided. The backlight module comprises a back plate, and an upper surface of the back plate is an uneven surface. The uneven surface is composed of a plurality of protruded portions and a plurality of indented portions formed on the upper surface of the back plate; or, the uneven surface is composed of a matte surface formed on the upper surface of the back plate. A light emitting source coordinating with the back plate is disposed above the back plate, and faces the uneven surface to emit light.03-28-2013
20100073599LIQUID CRYSTAL DISPLAY DEVICE AND BACKLIGHT MODULE THEREOF - A backlight module for a liquid crystal display, comprising: a light guiding plate comprising one or more incident surface and one light emitting surface; a reflecting film provided on a side of the light guiding plate opposite to the light emitting surface; and a reflecting type polarizing plate disposed directly on the light emitting surface of the light guiding plate and comprising a metal grating.03-25-2010
20130038815LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display device which uses a white LED as the light source, in order to avoid/suppress the reduction in the speed of response of the liquid crystal while increasing the color reproducibility and red chromaticity without the use of a special purpose color filter, a band cut filter which absorbs the wavelength component neighboring orange in light that is transmitted is provided between the liquid crystal display and the backlight unit.02-14-2013
20130033660LIQUID CRYSTAL DISPLAY MODULE - A Liquid Crystal Display (LCD) module for preventing a hot spot that deteriorates an external appearance quality using existing components is provided. The LCD module includes an optical sheet disposed at an upper surface of a light guide plate, a Light Emitting Diode Flexible Printed Circuit Board (LED FPCB) on which an LED for emitting light to the light guide plate is mounted, and a double-sided tape having a portion protruding toward the optical sheet further than the LED FPCB and adhered to a mounting surface of the LED FPCB. Therefore, occurrence of a hot spot can be reduced without increasing components. Further, because a thickness increase of a local portion is unnecessary, a second failure such as panel lifting is not caused.02-07-2013
20090273729Polarizing plate, manufacturing method thereof and display device using the same - A polarizing plate, a manufacturing method thereof and a display device using the same are provided. The polarizing plate comprises a brightness-enhancement film, a diffuser layer and a polarizing film. The diffuser layer is formed on one surface of the brightness-enhancement film, and the polarizing film is disposed on another surface of the brightness-enhancement film.11-05-2009
20090174838BACKLIGHT ASSEMBLY AND METHOD OF ASSEMBLING THE SAME AND LIQUID CRYSTAL DISPLAY INCLUDING BACKLIGHT ASSEMBLY - A backlight assembly includes a light source unit including a circuit board, a light source disposed on a first plane of the circuit board, and at least one connection unit disposed on a second plane opposite to the first plane of the circuit board and electrically connected to the light source, a receiving container having a bottom plate and sidewalls extending from edges of the bottom plate and receiving the light source unit, the bottom plate including at least one opening portion in which the connection unit is inserted and exposed to the outside, and at least one driving unit disposed at a rear surface of the receiving container and connected to the connection unit for driving the light source unit.07-09-2009
20100103350LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus includes a liquid crystal display device, a surface light source to irradiate light toward the device, an optical film disposed between the device and source, and a diffusion member disposed between the film and device. The device includes a pair of substrates facing to each other through a space with electrodes formed on at least one of opposite surfaces, a liquid crystal layer sealed into the space between the substrates, and a pair of polarizing plates arranged sandwiching the substrates therebetween. The film is made of a transparent film-like member and has two mutually faced film surfaces, one of the surfaces is formed into a planar shape, the other surface is formed into a convexo-concave structure with elongate microprisms in parallel to each other, and the film is disposed between the device and source with the one surface directed toward the device.04-29-2010
20100007821Diffuser prism sheet, LCD back light unit including the same, and LCD device including the same - A diffuser prism sheet, an LCD back light unit including the same, and an LCD device including the same, the diffuser prism sheet including a base film made of a transparent material, and a light refracting part on a surface of the base film, the light refracting part including a plurality of unit prisms arranged in one direction, having a predetermined cross-sectional shape and valley regions between adjacent unit prisms, and light diffusing elements in the valley regions between the adjacent unit prisms.01-14-2010
20090128740Diffuser plate, backlight and display having the same - A diffuser plate includes a first optical sheet having a rear surface configured to receive light from a light source and having a front surface configured to provide light to a second optical sheet, the first optical sheet having a refractive part that includes a plurality of optical members at a surface of the first optical sheet, and a second optical sheet disposed in front of the first optical sheet, the second optical sheet including a rear surface configured to receive light from the first optical sheet, a front surface configured to emit light, and light-scattering beads within the first optical sheet.05-21-2009
20130050615LOCAL DIMMING BACKLIGHT UNIT AND DISPLAY DEVICE INCORPORATING SAME - A backlight unit includes a light source and at least one modular light guide plate (LGP) element that guides light from the light source. The modular LGP element has a first surface and a plurality of pins integrally formed with and protruding from the first surface. A back plate portion has a plurality of receptacles for receiving the plurality of pins of the modular LGP element to fix the modular LGP element to the back plate portion. A backlight includes a plurality of the described backlight units, wherein the modular LGP elements are arranged in a two dimensional array, and the back plate portions form a common back plate to which the modular LGP elements are fixed. The backlight including the described backlight units may be incorporated into a liquid crystal display device.02-28-2013
20100134720Optical prism sheet, backlight unit, and liquid crystal display - An optical prism sheet includes an optical refracting part including a plurality of unit prisms, the unit prisms each having a predetermined cross-section and being disposed on one side of the optical prism sheet, and fine irregularities having a predetermined roughness and configured to diffuse light, the fine irregularities being on surfaces of the unit prisms and increasing a unit surface area of the optical refracting part by about 1.1 to about 100 times.06-03-2010
20090316072LIGHT GUIDE PLATE, LIGHT GUIDE PLATE ASSEMBLY, AND PLANAR LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING THESE - A light guide plate includes a light exit plane and a light entrance end, is formed into a shape having a thickness in a direction orthogonal to the light exit plane, the thickness being gradually larger as being farther-from the light entrance end, and contains scattering particles dispersed therein, and a light guide plate assembly includes the light guide plate and a prism sheet which includes a plurality of prisms arrayed in parallel with each other, and is arranged so that vertex angles of the prisms face the light exit plane. The scattering particles scatter light entering from the light entrance end and propagating in the light guide plate, which satisfy Expressions (1) and (2) below, and vertex angles of the prisms of the prism satisfy Expression (3) and (4) below.12-24-2009
20090303416PRISM SHEET, AND BACK LIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE THEREWITH - The present invention relates a prism sheet, and a back light unit and a liquid crystal display device therewith, in which total thickness of a back light unit is reduced while taking place of the lamp mura is prevented, for improving a picture quality.12-10-2009
20090303415Backlight module with reflective diffuser and liquid crystal display with same - An exemplary backlight module includes a first light source, and a diffusing film. The diffusing film includes a light incident surface adjacent to the first light source, a light emitting surface located at an opposite side thereof, and a plurality of first reflective portions provided at the light incident surface. A pitch between every two adjacent first reflective portions progressively increases with increasing distance away from the first light source. A liquid crystal display employing the backlight module is also provided.12-10-2009
20090303414OPTICAL MEMBER WITH A SCATTER LAYER, AND BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME - A display device includes a backlight assembly including an optical member comprising: a base film; a plurality of linear shaped prisms disposed on the base film and extending in one direction; and a scatter layer underlying the base film and attached to the base film and comprising a coat of beads which is spread under the base film, the scatter layer having a haze value of about 10% to about 30%.12-10-2009
20130057806LIQUID CRYSTAL DISPLAY DEVICE - The liquid crystal display device includes a liquid crystal cell, a backlight device, a first light diffusing layer, a first polarizer, and a second light diffusing layer. The first light diffusing layer includes a light diffusing plate and a prism sheet, and has light distribution characteristics such that a luminance value in a direction of 70 degrees with respect to a normal of a light incidence plane of the liquid crystal cell is 20% or less with respect to a luminance value in a direction of the normal. The second light diffusing layer includes a second polarizer and a light diffusing membrane. The backlight device is divided into a plurality of regions and is capable of controlling luminance per region.03-07-2013
20090040425PRISM SHEET AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An exemplary prism sheet (02-12-2009
20090040424OPTICAL PLATE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An exemplary optical plate includes a transparent layer and a light diffusion layer. The transparent layer and the light diffusion layer are integrally formed. The transparent layer includes a light input interface, a light output surface opposite to the light input interface, and a plurality of curved, elongated, V-shaped micro-protrusions are formed on the light output surface. The light diffusion layer is located adjacent to the light input interface of the transparent layer. A plurality of V-shaped micro-protrusions are formed on an outer surface of the light diffusion layer. A liquid crystal display device using the optical plate is also provided.02-12-2009
20090115936BACKLIGHT AND LIQUID CRYSTAL DISPLAY USING SAME - A backlight unit 05-07-2009
20110058124COMPOSITE OPTICAL DEVICE AND MONITOR - A composite optical device including pluralities of optical elements, pluralities of lighting devices, an emitting surface and a reflecting surface is provided. Each optical element including two first laterals, two second laterals, a third lateral and fourth lateral. The third lateral and the fourth lateral have a space respectively. The third lateral is adjacent to the fourth lateral of another optical element. Each lighting device is disposed inside the space. Whereby the third lateral and fourth lateral may receive the light energy of the lighting device and then the optical element delivers the light beam to the first lateral, the second lateral, the third lateral and the fourth lateral by means of the reflection of the reflecting surface. Finally, the light beam is output through the emitting surface.03-10-2011
20120307180OPTICAL FILM AND METHOD FOR MANUFACTURING THE SAME AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An optical film is provided. The optical film includes a substrate, a first transmission medium, second transmission medium, and a reflective polarizing film. The first transmission medium is disposed at the front surface of the substrate and includes a plurality of embossed microlenses. The second transmission medium is disposed at the rear surface of the substrate and comprises a plurality of V-shaped prisms. The reflective polarizing film is disposed at the front surface of the first transmission medium. The substrate, the first transmission medium, and the second transmission medium are bounded to each other to form a unitary sheet.12-06-2012
20090033831Prism sheet with curved surface and liquid crystal display device using same - An exemplary prism sheet includes a base including an upper surface and a plurality of lenses disposed on the upper surface. The upper surface is a wavy surface. A liquid crystal display device using the prism sheet is also provided.02-05-2009
20110013119BACKLIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME - A backlight assembly includes a light source generating light and a first optical member diffusing the light. The first optical member includes a first diffusion member provided on an exit surface of the first optical member, from which the light exits, to diffuse the light. The first diffusion member includes a plurality of edges each having a curved shape and extending between the exit surface and a vertex of the first diffusion member. Accordingly, the light exiting through the exit surface is effectively diffused by the edges of the first diffusion member.01-20-2011
20130063681BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY - A backlight module is disclosed, comprising a light guide plate and light sources, where the light guide plate comprises lateral incident faces, an exit face that joins the lateral incident faces, and an underside that corresponds to the exit face. The light sources each comprises an emitting surface, is disposed near one side of one lateral incident face of the light guide plate, and corresponds to the lateral incident face of the light guide plate with the emitting surface. The backlight module further comprises diffusion strips, where the diffusion strips each is disposed in between one lateral incident face of the light guide plate and the emitting surface of the light source, and the light rays emitted from the emitting surface of the light source pass the diffusion strip and diffuse into the light guide plate. This invention further discloses a liquid crystal display.03-14-2013
20130162931LIGHT EFFICIENCY ENHANCING OPTICAL DEVICES - A light efficiency enhancing optical device is disclosed, including a cholesteric liquid crystal film, a quarter wave plate disposed on a light out-going surface of the cholesteric liquid crystal film and an optical compensating film disposed on a light out-going surface of the quarter wave plate, wherein the optical compensating film includes a positive birefringence C-plate, and a composite optical compensating film with combination of the optical compensating film and the quarter wave plate has in-plane phase retardation R06-27-2013
20090046219Optical diffuser - An improved optical diffuser for use in a multi-component display (MCD), and also to a method of manufacturing the same, is disclosed. Embodiments provide an optical diffuser film which may be manufactured with fewer manual operations, at a lower cost, and in larger volume than conventional optical diffusers. The optical diffuser film may include a flexible polymer substrate coupled to an optical diffuser material with a plurality of features for diffusing light. The optical diffuser film may be stored, transported, or otherwise handled more easily and with less damage than conventional optical diffusers. Additionally, the optical diffuser film may be coupled to a rigid substrate to reduce distortion of the optical diffuser, thereby providing improved optical performance.02-19-2009
20090027592Display device, manufacturing method of display device, and manufacturing apparatus for the same - A display device includes a first display device, a second display device bonded to the first display device, and an adhesive provided between the first display device and the second display device to fix the first display device on the second display device, and including a light diffusion particle.01-29-2009
20090027590White film and backlight using same - A white film including polymer film wherein both the thermal shrinkage rate in the longitudinal direction and that in the transverse direction of the film are not less than −0.2% and not more than 0.5% at 90° C., and a backlight for liquid crystal displays using such a white film. Since the white film hardly suffers from undulation or rise in its end portions, it is most suitable as a reflection film for backlights of liquid crystal displays. Since a backlight for liquid crystal displays using this white film can be used for a long time, it is applicable to liquid crystal displays of various electrical/electronic devices.01-29-2009
20090009687Anisotropic Diffusion Sheet - The present invention provides an anistropic diffusion sheet, which comprises: an isotropic diffusion layer for isotropically diffusing the light incident from the light source portion by internal light scattering; and a plurality of reflectors which is disposed at an interval on the upper surface of the isotropic diffusion layer, so as to reflect the light isotropically diffused by the isotropic diffusion layer t the display panel, wherein the , emitted from the light source portion and then becomes incident to the isotropic diffusion layer, is isotropically diffused through the isotropic diffusion layer, the light isotropically illuminated by the isoptropic diffusion layer is the reflected by the plurality of reflector to be anisotropically diffuse, and this anisotropically diffused light becomes incident to the liquid crystal display panel.01-08-2009
20090009686Surface Emitting Device and Liquid Crystal Display - To provide a surface emitting device and a liquid crystal display in which the number of divided main light-source images is increased to enhance the uniformity of luminance distribution. A surface emitting device 01-08-2009
20120113357Transmissive Liquid Crystal Display with Reflective Mode - Method, system and device for a transflective liquid crystal display with both transmissive and reflective functions is realized by using a transflective component into a transmissive LCD. The transflective component can be a transparent substrate with patterned reflectors on one surface and repetitive patterned lenses or prisms formed on the opposite surface facing the backlight unit. The transparent areas substantially allow the optical beams to pass through. The light from the backlight is refracted or focused by the optical structures onto the transparent areas or apertures of other surface, thus a substantial amount of backlight transmits to the LC for light modulation for different gray levels. For the incident ambient light incident on the transflective component, the majority is reflected back to the viewer by the reflectors on the transflective component, and the remainder transmits the transflective component to the backlight unit and be recycled to be used again.05-10-2012
20110279752OPTICAL FILM AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING SAME - The present invention provides an optical film which is capable of impeding the occurrence of a failure of display quality at wide view angles, impeding the occurrence of the degradation of the front contrast, achieving a high transmission image definition, and impeding the occurrence of scintillation, and a liquid crystal display device comprising the same. On a substrate film 11-17-2011
20110279751ILLUMINATING LENS, LIGHTING DEVICE, SURFACE LIGHT SOURCE, AND LIQUID CRYSTAL DISPLAY APPARATUS - An illuminating lens (11-17-2011
20090147181BACKLIGHT ASSEMBLY, DISPLAY APPARATUS HAVING THE SAME AND METHOD FOR ASSEMBLING THE SAME - A backlight assembly comprises a light source unit emitting light, a heat-blocking plate disposed over the light source unit to prevent heat generated from the light source unit from being upwardly transmitted, and a receiving container receiving the light source unit and the heat-blocking plate. The receiving container includes a bottom plate and a plurality of sidewalls. Each of the sidewalls extends from a side of the bottom plate and has openings formed through each of the sidewalls. The openings are formed over the heat-blocking plate.06-11-2009
20090103008Backlight device for dual-view display - The present invention provides a backlight for dual-view display, comprising: a light source; a light-guide plate, which allows the incoming of light from the light source and uniformly guides and diffuses the light; a diffusing sheet, which is placed between the light-guide plate and liquid crystal panel; two prism sheets, which are placed between the diffusing sheet and the liquid crystal panel; and a reflective sheet, wherein the face where the prism is formed on the prism sheet on the diffusing sheet side amongst the two prism sheets faces the diffusing sheet, and the prism axis (the ridge line of the prism) is placed as to be parallel to a longitudinal direction with respect to the liquid crystal screen; the face where the prism is formed on the prism sheet on the liquid crystal panel side faces the liquid crystal panel, and the prism axis (the ridge line of the prism) is placed as to be the same as the lateral directions with respect to the liquid crystal screen; the prism tip angle of the prism sheet on the diffusing sheet side is 80° to 95°, and the prism tip angle of the prism sheet on the liquid crystal panel side is 70° to 100°.04-23-2009
20090147182BACKLIGHT MODULE AND DIFFUSION ASSEMBLY - A diffusion assembly for a liquid crystal display includes a diffuser and an optical film. The diffuser has at least one hanging element and a fixing element. The optical film has at least one hole, wherein the at least one hanging element is engaged with the at least one hole of the optical film, and the fixing element is substantially L-shaped and holds the optical film.06-11-2009
20110285939LIQUID CRYSTAL DISPLAY DEVICE - The present invention aims to provide a liquid crystal display capable of providing natural color display not tinged with red when viewed from an oblique front direction as well as when seen from a direct front direction. The liquid crystal display device of the present invention includes a light diffusing optical member (11-24-2011
20120099050ILLUMINATION DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER - A backlight unit (04-26-2012
20090091686Liquid Crystal Display Device - A liquid crystal display device includes a first substrate, a second substrate arranged on a viewer side, and a liquid crystal between the first and second substrates. A light guide plate is arranged on a back surface of the first substrate, a polarization plate is arranged between the first substrate and the light guide plate, and a prism sheet is arranged between the light guide plate and the polarization plate with prisms being provided on a light guide plate side thereof. A diffusion layer is arranged between the prism sheet and the polarization plate, and a light control sheet is arranged between the diffusion layer and the polarization plate. The light control sheet, which is a λ/2 retardation plate, rotates a polarization of light emitted from the diffusion layer, is arranged in contact with the polarization plate.04-09-2009
20120154713LIQUID CRYSTAL DISPLAY - A liquid crystal display including: a liquid crystal panel including front and rear glass substrates, a plurality of liquid crystal sub-pixels for red, green, and blue respectively corresponding to three color, i.e., red, green, and blue, lights, and disposed between the front and rear glass substrates, and a color filter disposed between the plurality of liquid crystal sub-pixels and the front glass substrate; a backlight unit disposed behind the liquid crystal panel, and including a plurality of three color light suppliers spaced apart from each other in groups and supplying the three color lights; and a lenticular lens array disposed between the backlight unit and the liquid crystal panel, and inducing the three color lights emitted from the three color light suppliers to the liquid crystal sub-pixels and the color filter of the liquid crystal panel. According to the liquid crystal display, the lenticular lens array is attached to the liquid crystal panel so as to induce red, green, and blue lights respectively to red, green, and blue color filters inside the liquid crystal panel, thereby increasing light transmittance and decrease light loss. Accordingly, power consumption of the liquid crystal display is reduced, the liquid crystal display realizes high resolution, and manufacturing expenses of the liquid crystal display are reduced.06-21-2012
20110141397BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight unit is provided. The backlight unit includes: a mold frame having a predetermined receiving space formed therein; a light guide plate disposed in the receiving space of the mold frame, and having an inclined surface formed on one side of the top surface so as to be inclined toward the inner side; a light source disposed between the light guide plate and the mold frame to emit light to the light guide plate; and a flexible printed circuit board, on which the light source is mounted, and which is supported in contact with the top surface of the light guide plate, wherein a stepped portion is formed on one end of the light guide plate, including a flat adhesion surface positioned at a height lower than one end face of the light guide plate.06-16-2011
20110134367POLARIZATION SHEET AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - Disclosed is a liquid crystal display device capable of enhancing luminance thereof, the device including a liquid crystal display panel for displaying an image; a light source for emitting light; a light guide plate for guiding the light emitted from the light source; an optical sheet above the light guide plate to enhance the efficiency of light input from the light guide plate; a polarization sheet above the optical sheet, the polarization sheet polarizing the light supplied to the liquid crystal display panel into a first polarizing direction and converting the light having a second polarizing component into the light having a first polarizing component to supply the light having the converted polarizing component into the liquid crystal display panel; and a polarizer onto the liquid crystal display panel to adjust transmittance of light transmitted through the liquid crystal display panel.06-09-2011
20090296022OPTICAL SHEET, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY - An optical sheet, a backlight unit including the optical sheet, and a liquid crystal display including the backlight unit may be provided. The optical sheet may include a reflective polarizing film, a first adhesive layer on one surface of the reflective polarizing film, and a first diffusion layer on the first adhesive layer. The first diffusion layer may include a first light transmitting material and a plurality of first diffusion particles provided therein. A difference between a refractive index of the first adhesive layer and a refractive index of the first light transmitting material is less than or equal to approximately 0.2.12-03-2009
20090002599Backlight module and liquid crystal display using same - An exemplary backlight module includes a light guide plate (01-01-2009
20100033652ANTIGLARE FILM AND DISPLAY DEVICE EMPLOYING THE SAME, AND LIGHT DIFFUSING FILM AND SURFACE LIGHT SOURCE SYSTEM EMPLOYING THE SAME - An actinic-energy-ray-curable resin composition (02-11-2010
20100033651SURFACE EMISSION DEVICE, OPTICAL ELEMENT AND LIQUID CRYSTAL DISPLAY DEVICE - Using a distance L between the centers of light sources 02-11-2010
20090190067LIGHT DIFFUSER PLATE, SURFACE LIGHT SOURCE, AND LIQUID CRYSTAL DISPLAY - An object of the present invention is to provide a light diffuser plate sufficiently suppressed in its yellowish coloring or the like and excellent in impact resistance.07-30-2009
20090167986MULTILAYER FILM, BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - The present invention is directed to a multilayer film. The present invention is also directed to a backlight unit and a liquid crystal display into which the multilayer film is incorporated. The backlight unit comprises a light source; and a multilayer film disposed adjacent to the light source, wherein the multilayer film comprises a first layer including a plurality of first particles and at least one second layer including a plurality of second particles, and wherein the second layer is disposed adjacent to the first layer and has a refractive index different from the first layer. The liquid crystal display comprises a liquid crystal panel; a light source; and a multilayer film disposed adjacent to the light source, wherein the multilayer film comprises a first layer including a plurality of first particles and at least one second layer including a plurality of second particles, and wherein the second layer is disposed adjacent to the first layer and has a refractive index different from the first layer.07-02-2009
20090167985Optical Plate, Method of Manufacturing the Same and Liquid Crystal Having the Same - An optical plate having improved light scattering power, a method of manufacturing the same and a liquid crystal display having the same. An optical plate includes a base material layer, and a lens portion having a plurality of unit lenses formed on one surface of the base material layer, each of the unit lenses having a convex shape, wherein a diffusion portion is formed in each of the unit lenses. The amount and cost of the light diffusing agent can be reduced, light transmittance can be improved, light uniformity can be enhanced without occurrence of bright lines, and intensity of light to be viewed is improved, thereby enhancing luminance07-02-2009
20090167984BACKLIGHT UNIT, DISPLAY DEVICE HAVING THE SAME, AND METHOD THEREOF - A backlight unit, and a display device having the backlight unit, includes a light source, the light source formed to directly illuminate a display panel, and an optical plate arranged over the light source, wherein the optical plate includes a first surface and a second surface that faces the first surface, and the first surface is different in height from the second surface.07-02-2009
20090147180LIGHT GUIDE PLATE WITH SPIRAL-SHAPED LIGHT-GUIDING UNITS FOR USE IN A LIQUID CRYSTAL DISPLAY DEVICE - An optical plate includes a plurality of light-guiding elements. The optical plate includes a first optical surface which a light is incident to and a second optical surface which the light goes out from. The plurality of light-guiding elements disposed on the third optical surface are used for guiding the light incident to the first optical surface. Each light-guiding element includes a first arc portion, a second arc portion, and a third arc portion. Both first ends of the first arc portion and the second arc portion are connected with a first portion of the third arc portion, and a second end of the first arc portion is connected to a second portion of the second arc portion. Each light-guiding element is substantially spiral-shaped.06-11-2009
20090141210LIGHT SOURCE BLOCK ASSEMBLY AND BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - The present invention relates to a backlight unit with a light emitting diode block assembly connected thereto, and a liquid crystal display having the backlight unit. In one embodiment, the backlight unit includes a plurality of light source blocks each of which includes a substrate having a light source and an electrode portion formed thereon; a connector electrically connecting the light source blocks to each other, coupled to the light source blocks in contact with one side of the connector, and fastening the light source blocks to each other by cross-coupling the light source blocks; and a supporter disposed on the other side of the connector. In this manner, LED blocks can be simultaneously both electrically and mechanically coupled, using a relatively small and simple number of connectors, facilitating reliability and ease of manufacture.06-04-2009
20090141211Liquid crystal display device - A liquid crystal display device is provided, which includes, in this order, a light source, an optical diffusion layer, and a liquid crystal panel having polarizing plates disposed on both surfaces of a liquid crystal cell, wherein a surface of the optical diffusion layer on a liquid crystal panel side has a periodic fine shape, and an uppermost surface of the polarizing plate disposed on a visible side of the liquid crystal panel has an antiglaring layer having a random fine uneven shape and having a transmittance clearness degree of not more than 150%. While having a high brightness with less electric power as compared with the prior art, the liquid crystal display device does not generate a Moire fringe.06-04-2009
20090310064STRIPED DIFFUSER, METHOD OF MANUFACTURING THE SAME, AND LIQUID CRYSTAL DISPLAY DEVICE WITH ADJUSTABLE VIEWING ANGLE EMPLOYING THE STRIPED DIFFUSER - Provided are diffuser, method of manufacturing same, and liquid crystal display device employing the diffuser. Liquid crystal display device includes: backlight unit; liquid crystal panel on which image is formed by using light emitted by backlight unit, and comprising: color filter comprising plurality of pixels each of which comprises plurality of subpixels that are alternately arranged and transmit light in different wavelength bands; and liquid crystal layer whose transmittance is adjusted under electrical control; and diffuser disposed on a top surface or a bottom surface of the liquid crystal panel and comprising diffusing areas and transparent areas which alternate with each other at intervals corresponding to the width of the subpixels, wherein the liquid crystal layer comprises liquid crystal areas corresponding to the diffusing areas and liquid crystal areas corresponding to the transparent areas and the transmittances of the liquid crystal areas are adjusted according to the subpixels.12-17-2009
20090128739LIGHT DIFFUSER PLATE WITH LIGHT-COLLECTING LAYER - There is provided a light diffuser plate with a light-collecting layer, which is sufficiently prevented from flawing and which is used to make it possible to sufficiently ensure a luminance in a forward direction.05-21-2009
20120033157Backlight Unit and Liquid Crystal Module - A backlight unit disposed behind a liquid crystal panel 02-09-2012
20100079701LENS SHEET, SURFACE LIGHT SOURCE DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - In a prism sheet (04-01-2010
20090251637LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a liquid crystal display panel and a backlight device which supplies light to a back surface of the liquid crystal display panel. The backlight device includes a diffusion plate, a plurality of cold cathode fluorescent lamps, and a reflection plate on which light is reflected. Assuming arrangement intervals of the plurality of cold cathode fluorescent lamps in the direction from a center portion to a peripheral portion as “a”, “b”, “c”, “d”, “e”, and “f” respectively, the plurality of cold cathode fluorescent lamps is arranged to satisfy the relationship of a>b≧c≧d≧e≧f. Such a liquid crystal display device can control the brightness distribution due to the arrangement of the cold cathode fluorescent lamps within the backlight device thus obtaining a high-quality image display without generating brightness irregularities.10-08-2009
20120268689LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device (10-25-2012
20120268690LIQUID CRYSTAL DISPLAY WITH NARROW ANGULAR RANGE OF INCIDENT LIGHT - A liquid crystal display includes a liquid crystal panel in the pixel electrode and common electrodes formed within a pixel comprise repeating structures. The angular range of light incident from the light source is narrower along a direction of the repeating structures than along an orthogonal direction.10-25-2012
20090201442DISPLAY DEVICE AND ELECTRONIC APPARATUS - A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. A transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.08-13-2009
20090201441Tensioned optical element having crimping frame and spring - The invention provides an optical element comprising at least one optical film wherein at least a portion of the optical film is maintained dimensionally stable by the presence of a mechanism for application of a controlled tensile force to the film. The mechanism for application of a controlled tensile force uses a crimping frame in association with a cantilevered spring which effectively maintains flatness of the film or films.08-13-2009
20090296025LAMP ASSEMBLY, LIGHT SUPPLYING APPARATUS AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A lamp assembly, light supplying module and LCD device using the same are provided. The LCD device includes the light-supplying module for generating a first light, a light distribution-changing module for receiving the first light and changing the optical characteristics of the first light to output a second light, and a display module for receiving the second light having improved optical characteristics, the light distribution-changing module being coupled to the light-supplying module by means of a first engaging member, the display module being coupled to the light distribution-changing module by means of a second engaging member, and the display module, light distribution-changing module and light-supplying module being coupled to each other by means of a third engaging member. Therefore, each component of the LCD device having above structure is easily separated, replaced and easily repaired.12-03-2009
20090279018Optical device having light diffusing paper incorporated therewith - An optical device includes a light diffusing paper as integrally formed, secured, bonded or adhered to a surface of an optical element, which includes: an optical film, a brightness enhancement film (BEF), a display, a light guide, to thereby form an optical device with increased light uniformity.11-12-2009
20090279019Backlight Device and Liquid Crystal Display Apparatus - Disclosed is a backlight device comprising: a light emitting section including a plurality of surface light emitters which are arranged and disposed so as to have a predetermined gap; and a diffuser plate which is disposed in front of the light emitting section to diffuse a light irradiated from the light emitting section, wherein an angle between two light irradiation surfaces in the adjacent surface light emitters is smaller than 180 degrees.11-12-2009
20090262282BRIGHTNESS ENHANCEMENT FILM FOR LIQUID CRYSTAL DISPLAY AND MANUFACTURING METHOD THEREOF - A liquid crystal display having a brightness enhancement film and a method of manufacturing the brightness enhancement film, the method including providing a solution of high molecular weight resin on a high molecular weight film, uniformly distributing the solution of high molecular weight resin on the high molecular weight film, and drying the solution of high molecular weight resin to form a high molecular weight resin layer, wherein the high molecular weight resin layer has a hexagonal lattice structure.10-22-2009
20090262281BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY MODULE INCLUDING THE SAME - A backlight unit includes a reflection sheet, lamps arranged over the reflection sheet and with a first distance between adjacent lamps, a first diffuser plate disposed over the lamps and spaced apart from the reflection sheet with a second distance, the first diffuser plate having a first surface facing the reflection sheet and a second surface opposite to the first surface, wherein the first surface is flat and the second surface includes first patterns, and a second diffuser plate disposed over the first diffuser plate, the diffuser plate having a third surface facing the first diffuser plate and a fourth surface opposite to the third surface, wherein the third surface is flat and the second surface includes second patterns, wherein a ratio of the first distance over the second distance is within a range of more than 0 and less than and/or equal to 2.75.10-22-2009
20090284686OPTICAL SHEET, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY - An optical sheet, a backlight unit including the optical sheet, and a liquid crystal display including the backlight unit are provided. The optical sheet includes a base film including a first surface and a second surface opposite the first surface and a plurality of projections on the base film. A first thickness between the first surface and the second surface is different from a second thickness between the first surface and the second surface.11-19-2009
20100220262LINEARLY POLARIZED BACKLIGHT SOURCE IN CONJUNCTION WITH POLARIZED PHOSPHOR EMISSION SCREENS FOR USE IN LIQUID CRYSTAL DISPLAYS - A device for displaying images positions a luminescent material between a light source and a liquid crystal display (LCD). The light source, which comprises one or more nonpolar or semipolar III-nitride based light emitting diodes (LEDs), emits a primary light having a specified polarization direction and comprising one or more first wavelengths. This primary light emitted by the light source is a linearly polarized light that eliminates any need for a polarizer. The luminescent material, which comprises one or more phosphors, is optically pumped by the primary light and emits a secondary light having the polarization direction of the primary light, wherein the secondary light is comprised one or more second wavelengths that are different from the first wavelength. This secondary light emitted by the luminescent material is a colored light that eliminates any need for a color filter. The LCD receives the secondary light and displays one or more images in response thereto.09-02-2010
20090290095Optical unit and LCD device using the optical unit - An optical unit includes a light conductive plate having a first surface and a second surface, at least one optical sheet on the first surface of the light conductive plate, and a light reflective sheet extending over an entire second surface of the light conductive plate and fastened on a portion of a first surface of the optical sheet adjacent a periphery thereof to fasten the light conductive plate, the optical sheet, and the light reflective sheet as an optical unit, and to define a light discharge region on the first surface of the optical sheet and the first surface of the light conductive plate.11-26-2009
20090103007DIELECTRIC BARRIER DISCHARGE LAMP, BACKLIGHT DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - A dielectric barrier discharge lamp 04-23-2009
20090296023OPTICAL SHEET, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY - An optical sheet, a backlight unit including the optical sheet and a liquid crystal display including the backlight unit are disclosed. The optical sheet includes a reflective polarizing film, and a first diffusing layer on the reflective polarizing film. The first diffusing layer includes a plurality of first diffusion particles. The first diffusion particles have a volume distribution as a function of diameter. For a diameter D of a first diffusion particle corresponding to a maximum value of the volume distribution, a summation of volumes of a portion of the first diffusion particles having diameters between D−2 μm and D+2 μm is about 40% to 80% of a total volume of the first diffusion particles.12-03-2009
20090296021OPTICAL SHEET, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY - An optical sheet, a backlight unit including the optical sheet, and a liquid crystal display including the backlight unit may be provided. The optical sheet may include a reflective polarizing film, a base film on one surface of the reflective polarizing film, and a projection portion on the base film. The projection portion may include a plurality of diffusion particles, a plurality of peaks, a plurality of valleys formed from the plurality of peaks, and a base portion between the base film and the peaks and the valleys. A height of the base portion is approximately 5% to 50% of a height of one of the peaks.12-03-2009
20090296020LIGHT DIFFUSION DEVICE, BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY - A light diffusion device including a light incident surface and a light exit surface is provided. The light exit surface has at least one light scattering pattern. A trajectory of the light scattering pattern is a continuous curve. The continuous curve is winded to form a plurality of closed patterns in sequence on the light exit surface, and two adjacent closed patterns at least overlap partly.12-03-2009
20100103349ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight of the present invention (illumination device) 04-29-2010
20100103348DISPLAY - A display including a display panel, a transparent rear plate, a backlight module, and a first optical film set is provided. The transparent rear plate has a first surface, a second surface, and an optical decoration. The first surface is facing the display panel, and the second surface is relatively far away from the display panel. The optical decoration is located on at least one of the first and second surfaces. The backlight module is disposed between the display panel and the transparent rear plate. The first optical film set is disposed between the backlight module and the transparent rear plate. Combination of the optical decoration, the backlight module, and the first optical film set forms a plurality of images which can be displayed on the second surface of the transparent rear plate.04-29-2010
20100103347DISPLAY AND ILLUMINATOR - A display for illuminating a liquid crystal display panel with laser light of uniform light quantity distribution, and an illuminator for irradiating with laser light of uniform light quantity distribution are provided.04-29-2010
20100060818ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight (illumination device; 03-11-2010
20080239201LIGHT-SCATTERING FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE - A light-scattering film includes a support; and a layer including a light-scattering particle and a light-transparent resin, wherein the light-scattering film satisfies following formulae (1) to (3) at the same time:10-02-2008
20080239202Backlight unit and liquid crystal display device having the same - A backlight unit for slimmed structure and exhibiting uniform brightness through the improvement of its luminance efficiency and the quality in appearance of which is improved by the removal of bright lines, and a liquid crystal display device having the same are disclosed. The backlight unit includes a plurality of light emitting lamps disposed above a cover bottom such that the light emitting lamps are arranged at regular intervals, a diffusion plate disposed above the light emitting lamps, the diffusion plate including a substrate, a light control part formed on the bottom surface of the substrate corresponding to the light emitting lamps, and lens parts mounted on the top surface of the substrate, and an optical film disposed above the diffusion plate.10-02-2008
20090033830OPTICAL SHEET - An optical sheet includes a substrate and a plurality of convex lens structures. The substrate has a first surface and a second surface, which are disposed opposite to each other. The convex lens structures are disposed on the second surface, and each of the convex lens structure has a cambered surface. The cambered surface fits a curve surface equation of Ax02-05-2009
20090033829PRISM SHEET AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An exemplary prism sheet according to a preferred embodiment includes a first surface and a second surface opposite to the first surface. A plurality of micro-protrusions are formed on the first surface. A plurality of curved elongated V-shaped protrusions are formed on the second surface. A liquid crystal display device using the prism sheet is also provided.02-05-2009
20080273144DIFFUSING POLARIZER AND BACKLIGHT MODULE USING THE SAME - A diffusing polarizer including a substrate and a microstructure layer is provided. The micro-structure layer includes a solid phase liquid crystal having a birefringence feature. The diffusing polarizer is capable of both polarizing and diffusing incident light beams. A backlight module using the diffusing polarizer is also provided.11-06-2008
20080273143PASSIVE OPTICAL DEVICE AND LIGHT SOURCE MODULE - A passive optical device includes a first substrate, a second substrate, a stabilized liquid crystal (LC) layer and a surface micro-structure layer. The stabilized LC layer is disposed between the first substrate and the second substrate and has a polarization beam-splitting function via an aligning direction of liquid crystal molecules. The surface micro-structure layer is disposed on an exterior surface of at least one of the first substrate and the second substrate and used to produce a light-collecting effect.11-06-2008
20080284944Plane light source and LCD backlight unit having the same - There are provided a plane light source and an LCD backlight unit having the same. A plane light source having a plurality of light emitting devices arranged in a light emitting device matrix having rows and columns at a substrate according to an aspect of the invention includes a first matrix having a plurality of light emitting devices arranged in rows and columns; and a second matrix having a plurality of light emitting devices arranged in rows and columns, each of the light emitting devices located within a rectangle formed by four neighboring light emitting devices included in the first matrix, wherein a pitch S between one light emitting device included in the light emitting device matrix and another light emitting device most adjacent to the one light emitting device satisfies the following equation to obtain uniform luminance distribution at a position distant from a light emitting surface of the light emitting device by an optical length l,11-20-2008
20080291363ELECTRO-OPTIC DEVICE, ELECTRONIC APPARATUS AND ILLUMINATION DEVICE - An electro-optic device includes a light source, a light guide panel configured to output light beams emitted from the light source through a light exit plane; a display panel illuminated by the light beams outputted from the light exit plane of the light guide panel passing therethrough; a prism sheet provided between the light guide panel and the display panel and formed with prisms having a triangular cross-section on a surface on the side of the display panel; and a light diffusing member provided between the light guide panel and the prism sheet. The prisms each having a ridge line extending substantially vertically to the direction of emission of the light beam emitted from the light source, and an apex angle is set to a range from 60° to 70°.11-27-2008
20080291362Diffuser for Light From Light Source Array and Displays Incorporating Same - An optical structure placeable between a backlight array of point light sources and a planar display. The structure distributes light emitted by the point light sources to uniformly illuminate the plane of the display, without introducing significant viewing parallax. The emitted light is partially collimated within a preferred angular viewing range, maximizing the display's luminance when viewed from the normal direction. The structure is highly reflective, such that a substantial portion of any non-emitted light rays are internally reflected by the structure, increasing the likelihood that those rays will be subsequently emitted by the structure.11-27-2008
20080303978BACKLIGHT ASSEMBLY, LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME AND METHOD OF MANUFACTURING LAMP-FIXING MEMBER - A backlight assembly includes a receiving container, lamps, a diffusion plate and a lamp-fixing member. The receiving container includes a bottom plate and sidewalls together providing a receiving space. The lamps are arranged substantially parallel to each other on the bottom plate. The diffusion plate is disposed over the lamps. The lamp-fixing member includes a body portion extending substantially perpendicular to the lamps, a buffer protruding upwardly from the body portion, a diffusion plate supporting portion protruding from the buffer to support the diffusion plate and a lamp-fixing portion formed at the body portion to fix the lamps. Therefore, the buffer having elasticity is formed at an area at which the diffusion plate supporting portion is formed, so that rubbing between the diffusion plate and the diffusion plate supporting portion may be reduced.12-11-2008
20080303976Liquid Crystal Display Device - A liquid crystal display panel includes a TFT substrate and a color filter substrate respectively formed of a glass substrate. By housing the liquid crystal display panel in the inside of a frame having a curved surface, a predetermined curved surface is imparted to a display screen. Using a direct backlight having a plurality of fluorescent lamps, distances between the respective fluorescent lamps and the liquid crystal display panel are set to a fixed value. A diffusion plate has a curved surface substantially equal to the display screen. By mounting respective optical sheets on the diffusion plate, predetermined curved surfaces are imparted to the respective optical sheets. Due to such constitution, it is possible to realize a liquid crystal display device having a curved surface without using a complicated optical system.12-11-2008
20080309847LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - LEDs (light sources) are disposed in a row in the width direction of a light-guiding plate near the edge surface of the light-guiding plate. In the edge surface of the light-guiding plate, diffractive optical elements (DOEs) are disposed to face the LEDs, respectively. These DOEs are constituted of binary concave and convex patterns, and the diffusion angle of the DOEs disposed near the center is set smaller than that of the other DOEs disposed near the edge.12-18-2008
20080309846BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A backlight unit includes at least one light emitting diode; and a diffusion plate over the at least one light emitting diode and including at least one opening portion corresponding to the at least one light emitting diode.12-18-2008
20080266488LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a light source, at least one optical member having a periodic structure of 75 μm or more, pixels disposed in a matrix state, and at least one optical member with light scattering properties.10-30-2008
20080303977Liquid Crystal Display Device - An object of the present invention is to provide a liquid-crystal display device which includes a diffuser board that does not produce striped mura on the surface of a liquid crystal panel even if point light sources are used as light sources of a backlight.12-11-2008
20100020266FLAT PANEL DISPLAY ASSEMBLY WITH IMPROVED LUMINANCE UNIFORMITY AND METHOD FOR CONSTRUCTING THE SAME - A flat panel display assembly and a method for constructing a flat panel display assembly are provided. The flat panel display assembly includes a substrate, a plurality of light emitting components mounted to the substrate, at least one diffusion component having concave and convex opposing surfaces. Each of the diffusion components is coupled to the substrate such that the concave surface thereof is between at least some of the plurality of light emitting components and the convex surface thereof. The at least one diffusion component is configured to diffuse light emitted from the at least some of the plurality of light emitting components as the light propagates therethough. A diffusion layer is coupled to the substrate such that the convex surface of each of the at least one diffusion component is between the concave surface thereof and the diffusion layer and configured to further diffuse the light that propagates through the at least one diffusion component.01-28-2010
20110205464BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - A liquid crystal display includes a liquid crystal display panel, a backlight and a cover. The backlight includes optical sheets that are configured to be mounted to the cover using a plurality of holes provided on the optical sheet that material to corresponding protrusions provided on the cover. The holes and protrusions are configured to reduce damage or misalignment to the optical sheet that may be caused by heat generated inside the liquid crystal display.08-25-2011
20130120689SURFACE LIGHT SOURCE AND LIQUID CRYSTAL DISPLAY DEVICE - The light emitting device radiates light at an optical axis A and around the optical axis A, and includes a light source and a lens radially expanding the light from the light source. The light source includes a light emitting element and a fluorescent material covering the light emitting element and has an emission surface orthogonal to the optical axis. The lens is configured such that a refractive power in a first direction orthogonal to the optical axis differs from a refractive power in a second direction orthogonal to the optical axis and the first direction. An incident surface of the lens may include an anamorphic curved surface in which a curved shape in the first direction differs from a curved shape in the second direction.05-16-2013
20090027593Liquid crystal display device having a prism sheet between first and second light diffusion - In a liquid crystal display device capable of performing as both a transmissive display and a reflective display using a transmissive type liquid crystal display panel, the influence attributed to a shade as viewed from the oblique direction can be reduced so that favorable visibility can be ensured. In a liquid crystal display device including a transmissive type liquid crystal display panel which sandwiches a liquid crystal layer between a pair of substrates and a backlight which is arranged at a back face of the liquid crystal display panel and has a light source and a reflector, wherein the device is capable of performing as a transmissive display using light from the light source and as a reflective display using external light incident from a front face side of the liquid crystal display panel by reflecting the external light on the reflector, at least two or more light diffusion layers are arranged between the back-face-side substrate out of the pair of substrates and the reflector of the backlight.01-29-2009
20090027591COLLIMATING LIGHT GUIDE PLATE, DIFFUSING UNIT, AND DISPLAY APPARATUS EMPLOYING THE SAME - A diffusing unit includes: a polarizing plate; and a diffusing layer integrally provided on a surface of the polarizing plate without an air layer therebetween. By using a display apparatus employing a collimating light guide plate and the diffusing unit, the optical performances such as resolution and viewing angle can be improved. Also, because gray scale inversion and color shifts can be reduced or eliminated using collimated light, image quality of the display apparatus can be improved.01-29-2009
20090128737Multifunctional thick film reflective polarizer for displays - Multilayer reflective polarizers are disclosed that utilize a thick film multilayer stack and that are suitable for use in liquid crystal display devices. The disclosed polarizers can be mechanically stiff and suitable for use as a plate or substrate for other light control films within the display. The polarizers can also include diffusing means to scatter transmitted light of the pass state, reflected light of the block state, or both.05-21-2009
20080316393LIQUID CRYSTAL MODULE - A liquid crystal display device includes a frame, a linear light source, a liquid crystal cell, a light diffusing plate and a positioning mechanism. The light diffusing plate is disposed between the frame and the liquid crystal cell and has an optical processing region formed in a first direction from a first side portion of the light diffusing plate to a second side portion of the light diffusing plate. The positioning mechanism positions the light diffusing plate with respect to the frame with a middle portion of at least one of the first and second side portions of the light diffusing plate in a second direction perpendicular to the first direction being used as a reference to align the optical processing region of the light diffusing plate with the linear light source in the second direction.12-25-2008
20120069273DISPLAY DEVICE - A direct-viewing type display device (03-22-2012
20120069272LIQUID CRYSTAL DISPLAY DEVICE - The backlight has an anisotropic diffusion sheet disposed between the reflective polarizing plate and the optical path converter. The anisotropic diffusion sheet includes a refractive index anisotropic diffusion sheet stretched in an absorption axis direction in which a concave-convex portion is formed on a surface of the reflective polarized plate, and an isotropic material part laminated on a surface of the concave-convex part. The isotropic material part has an isotropic reflective index. The refractive index of the isotropic material part is the same as the refractive index in the transmission axis direction perpendicular to a stretching direction of the refractive index anisotropic sheet.03-22-2012
20080316394Backlight module, lamp hoder and liquid crystal display using same - An exemplary backlight module includes a diffuser plate, a bottom plate facing the diffuser plate, lamps arranged between the diffuser plate and the bottom plate, and holders positioned between the diffuser plate and the bottom plate. Each holder includes a fixing part for holding the corresponding lamp, and two supporting parts extending from the fixing part. The supporting parts are configured for supporting the diffuser plate.12-25-2008
20090122227Integrated backlight illumination assembly - The present invention provides an integrated backlight illumination assembly for an LCD display comprising, a substrate for providing structural and functional support to the assembly, a bottom reflector provided on the substrate and a plurality of solid state light sources provided in an opening of the bottom reflector for providing a point light source. Further, the invention provides a plurality of light films with a thickness between 10 microns to 3mm and having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light source to a uniform plane of light and a top diffuser for diffusing the uniform plane of light, and wherein the plurality of light films has a thickness between 0.1 mm to 1.0 mm and a bending stiffness between 50 to 1200 millinewtons.05-14-2009
20090015753LIGHT GUIDE PLACE AND LIGHT-DIFFUSING STRUCTURE THEREOF - A light guide plate that is divided into an effective section capable of providing uniform surface illumination and a transitional section between the effective section and the point light source includes a light-receiving surface, a light-emitting surface, a light-reflecting surface, and a plurality of light-diffusing structures. The light-diffusing structures are spread on the transitional section, and each light-diffusing structure is in the shape of a part elliptic cylinder having a long axis and a short axis and the front surface of the light-diffusing structure facing the point light source is a part elliptic cylindrical surface.01-15-2009
20090051851FILM-SHAPED LIGHTGUIDE PLATE UNIT, PLANAR LIGHT UNIT, DISPLAY APPARATUS AND ELECTRONIC DEVICE - A film-shaped lightguide plate unit enables reductions in thickness and weight. The film-shaped lightguide plate unit (02-26-2009
20090256999Lens Array Sheet, Light Source and Liquid Crystal Display Device - A lens array sheet includes a lens layer having a lens surface on which a plurality of lenses are formed in an array, a light reflection layer arranged at an opposite side to the lens surface of the lens layer and having an opening within a light focusing region in the lenses to transmit light, for reflecting light at a site other than the opening, and a light diffusion layer arranged between the lens layer and the light reflection layer, for diffusing light, which passes through the opening and is directed toward the lens layer.10-15-2009
20090051850PRISM SHEET AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An exemplary prism sheet includes a main body having a surface. The surface defines a plurality of first V-shaped micro-protrusions and second V-shaped micro-protrusions thereon. Each of the first V-shaped micro-protrusions extends along a first curved direction. Each of the second V-shaped micro-protrusions extends along a second curved direction. The first V-shaped micro-protrusions intersect with the second V-shaped micro-protrusions. The present prism sheet and the liquid crystal display device using the same can efficiently decrease moire pattern interference between the prism sheet and the pixel pitch of LCD panel.02-26-2009
20110141398TRANSFLECTIVE LIQUID CRYSTAL DISPLAY DEVICE - Discussed is a transflective liquid crystal display device, capable of improving luminance, the device including a liquid crystal display panel provided with first and second substrates, a plurality of pixel regions defined by a plurality of gate lines and data lines on the first substrate, a thin film transistor formed on each pixel region, a black matrix and a color filter layer formed on the second substrate, and a liquid crystal layer interposing between the first an second substrates, a first polarizer and a second polarizer disposed above and below the liquid crystal display panel, respectively, a backlight unit disposed below the second polarizer to emit light to the liquid crystal display panel, a selective reflection film disposed between the liquid crystal display panel and the second polarizer so as to reflect light incident from the exterior and transmit light emitted from the backlight unit, a first reflecting layer formed on at least one of the gate line and the data line of the liquid crystal display panel to reflect light input from the exterior.06-16-2011
20090096956LIGHT SOURCE APPARATUS - A light source apparatus permits an angular range of illumination light to be changed, wherein the apparatus can be made thin. A related display apparatus permits a visible angular range to be changed using the light source apparatus. The display apparatus can be mounted in a terminal device, and an optical member and an optical unit can be incorporated in the light source apparatus. The light source apparatus is provided with a light guide plate with a conical sheet. Two light sources are provided on side surfaces of the light guide plate. Two inclined surfaces whose inclination angles to a light output surface differ from each other are formed at a light diffusion surface of the light guide plate. The conical sheet is provided with a flat plate portion on which a plurality of cones are formed. The cones protrude toward the light guide plate.04-16-2009
20090096955Liquid Crystal Display Appliance and Lighting System - The present invention provides a liquid crystal display appliance in which portions of a liquid crystal display panel over luminescent lamps are not seen extraordinarily brighter and brightness of the liquid crystal display panel does not lower significantly at portions in the vicinity of the vertical direction edge of the liquid crystal display panel if a lighting system becomes thinner than 20 mm. This liquid crystal display appliance comprises a lighting system, in which a distance D between light reflector sheet 04-16-2009
20080284942Backlight Device and Transmission Type Liquid Crystal Display Apparatus - A transmission liquid crystal display device using a backlight device for supplying display light emitted from a large number of light emission diodes to a transmission display panel. The transmission liquid crystal display device has an optical sheet block (11-20-2008
20110141399TRANSPARENT DISPLAY DEVICE - Disclosed is a transparent display device that includes a LCD panel; a light source at one side of a lower portion of the LCD panel to emit light; a first polarizing plate polarizing light emitted from the light source; a light guide plate at a lower portion of the LCD panel to totally reflect the light polarized to an axis by the first polarizing plate to a lateral surface and supply to the LCD panel, and transmit natural light from a lower direction; a second polarizing plate at an upper portion of the LCD panel to control the amount of polarized light passing through the LCD panel; and an optical sheet at a lower portion of the light guide plate to change the polarized state of a first polarized light from the light guide plate and reflect the light, and transmit a second polarized component from the lower portion therethrough.06-16-2011
20080252815Polarization structure and liquid crystal display device having the same - A polarization structure and a liquid crystal display device having the same are provided. The polarization structure includes a polarizing film, a phase compensation film layer, and a diffusing adhesive layer. The phase compensation film layer is disposed on the polarizing film, and the diffusing adhesive layer is disposed on one side of the phase compensation film layer opposite to the polarizing film. The diffusing adhesive layer has an adhesive material and a plurality of diffusing particles added into the adhesive material.10-16-2008
20090219462Backlight unit and liquid crystal display device including the same - A lamp guide includes: a horizontal part; at least one supporting part extending from a front surface of the horizontal part; a plurality of holding parts on the front surface of the horizontal part, each of the plurality of holding parts holding a lamp and twisted from the horizontal part; and at least one coupling part extending from a rear surface of the horizontal part.09-03-2009
20100265434OPTICAL FILM, BACKLIGHT UNIT INCLUDING THE SAME AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - An optical film, a backlight unit having the same, and a liquid crystal display device having the same are disclosed. The optical film comprises a base film and a plurality of structures disposed on the base film, at least one of the structures comprising a plurality of beads with a diffusion portion having a first diameter and a transmission portion having a second diameter integrally formed with each other.10-21-2010
20090257000LENS ARRAY SHEET, LIGHT SOURCE AND LIQUID CRYSTAL DISPLAY DEVICE - A lens array sheet includes a lens layer having a lens surface on which a plurality of lenses are formed in an array, and a light diffusion layer arranged at an opposite side to the lens surface of the lens layer, for diffusing light directing toward the lens layer, wherein the light diffusion layer has a light reflection portion, which is embedded in at least a part of a non-light focusing region of the lens layer, for reflecting light passing through the non-light focusing region and directing toward the lens layer.10-15-2009
20090256998BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY - A backlight module and a liquid crystal display are provided. The liquid crystal display comprises a liquid crystal panel, a light source provided below the liquid crystal panel and at least one support member provided on the upper surface of the light source for supporting a liquid crystal panel. According to the embodiment of the present invention, when the liquid crystal panel is subject to a force upon pressing or impact, the force can be counteracted by the support member. Therefore, the deformation of the liquid crystal panel can be effectively reduced so that light leakage can be prevented.10-15-2009
20090256997Liquid Crystal Display Device - In a liquid crystal display device having a light diffuser, a desired luminance distribution is realized and displaying with a high contrast ratio across a broad angle range is performed.10-15-2009
20080259246MATRIX-TYPE LIQUID CRYSTAL DISPLAY DEVICE - A matrix-type liquid crystal display device, includes: a liquid crystal panel including: a pair of substrates disposed to face each other with at least one of the pair of substrates having an electrode; a liquid crystal layer interposed between the pair of substrates; a pair of polarizing plates disposed to sandwich the liquid crystal layer, each having a polarizing film and a protective film provided directly or indirectly on at least one surface of the polarizing film; and an optically compensatory film disposed in at least one of spaces between the liquid crystal layer and the pair of polarizing films; a backlight comprising a light source; a first optical member having a light-condensing property; and a second optical member having a surface scattering function.10-23-2008
20080259245BACKLIT DISPLAY - The present invention relates to the field of the backlighting of displays. A backlit display unit comprises a display medium for displaying visible information to a user of the unit, an LED light source for backlighting the display medium, a light diffuser for diffusing light which is incident on the light diffuser, and a printed circuit board carrier which supports the light source. The light diffuser is spaced apart from the display medium and is in an intermediate orientation with respect to the light diffuser and the display medium. The carrier has opposite first and second surfaces, the first surface being oriented generally towards the display medium and the second surface being oriented generally towards the light diffuser. The surfaces are bounded by one or more edges. The arrangement is such that illumination from the light source is directed away from the display medium to be incident upon the light diffuser. This incident light is then diffused by the light diffuser past the edges of the printed circuit board back towards the display medium to provide backlight illumination for the display medium.10-23-2008
20080259243OPTICAL SHEET STACK AND LIQUID CRYSTAL DISPLAY DEVICE - There is provided an optical sheet stack which includes a first optical sheet having a large number of irregularities consecutively arranged on one surface thereof, and a second optical sheet stacked thereon. In the optical sheet stack, the second optical sheet has, on a bonding surface thereof, an adhesive layer bonded with apexes of the irregularities, and while assuming pitch of arrangement of the irregularities as P, and width of bonding of each apex of the irregularities bonded to the adhesive layer as Pw, the relation of 010-23-2008
20090316073Light Diffusion Module and a Back Light Module Using the Same - A light diffusion module and a back light module using the same. The light diffusion module is disposed corresponding to the light source module of the back light module. The light diffusion module includes a first diffusion layer and the second diffusion layer. The first diffusion layer is disposed on top of the light source module and the top light exit surface has a plurality of first micro structures juxtapositioned to each other. The second diffusion layer is disposed on top of the first diffusion layer, and the top surface has a plurality of second micro structures juxtapositioned to each other. The ratio of the width of each first micro structure to the width of each second micro structure is between 1.1 and 1.8. The ratio of the height of each first micro structure to the height of each second micro structure is between 0.8 and 1.5.12-24-2009
20100165249Liquid crystal display device with a backlight unit having a diffusion plate - A liquid crystal display device having a direct backlight which uses a high-bright light source achieves both of a high efficiency and thin uniformity. In a liquid crystal display device which includes a liquid crystal panel, and a backlight unit which is arranged on a side of the liquid crystal panel opposite to a display screen of the liquid crystal panel, the backlight unit includes a housing, a plurality of light sources arranged in the inside of the housing, and a diffusion plate which is arranged between the plurality of light sources and the liquid crystal panel, the diffusion plate includes a plurality of light blocking regions at positions corresponding to the plurality of respective light sources, and the light blocking region at a center portion of the housing and the light blocking region at an edge portion of the housing exhibits transmissivities different from each other.07-01-2010
20100149457LIQUID CRYSTAL DISPLAY MODULE, LIQUID CRYSTAL DISPLAY AND ITS ILLUMINATOR - A liquid crystal display module in which its color shift is reduced. The liquid crystal display module comprises a liquid crystal panel having such wavelength dependency that the transmittance to incident illumination light is different depending on both the incident angle and the wavelength of the illumination light and its anisotropy is different in the lateral direction and the vertical direction, and a plurality of single color light sources having different light distribution characteristics of emission wavelength and illuminating the liquid crystal panel from the back, wherein the plurality of single color light sources emit illumination light having light distribution characteristics for relaxing the wavelength dependency and the anisotropy.06-17-2010
20100157199Liquid crystal display device - In the present invention, a diffusing sheet for diffusing light outputted from a light guide plate is extended to a stepped upper surface of an LED substrate and disposed at a lateral surface of the light guide plate so that the diffusing sheet can completely cover the light guide plate, thereby preventing undiffused light from being supplied to an liquid crystal display device.06-24-2010
20100165247LIQUID CRYSTAL DISPLAY - A liquid crystal display (LCD) device includes: a liquid crystal panel; a plurality of lamps disposed under the liquid crystal panel, supplying light to the liquid crystal panel; a diffusion plate disposed above the lamps and diffusing light emitted from the lamps; a diffusion sheet disposed on the diffusion plate and including a plurality of reflection patterns formed on a region of a rear surface adjacent to the lamps and including reflection beads reflecting a portion of light from the diffusion plate, wherein the respective reflection patterns of the diffusion sheet are formed to extend in a direction parallel to a lengthwise direction of the lamps.07-01-2010
20090103006Backlight assembly and liquid crystal display device using the same - A liquid crystal display (LCD) device includes an LCD panel having an exterior surface with a first area and an interior surface; a light filter layer having an exterior surface provided at the interior surface of the LCD panel and an interior surface; a light guide assembly provided behind the interior surface of the light filter layer, the light guide assembly including a plurality of light pipes; a light source including a plurality of selectively illuminated lamps arranged at a lateral side of the light guide assembly, each of the lamps being respectively associated with a different one of the light pipes for emitting light into the respective light pipe; a plurality of diffusion surfaces, each of the diffusion surfaces being provided on a selected area of a respective one of the plurality of the light pipes, the selected area being smaller than the first area; wherein each of the diffusion surfaces causes light to be emitted from the selected area of the respective light pipe when the light pipe is illuminated by the lamp associated therewith.04-23-2009
20100188609ILLUMINATING LENS, AND LIGHTING DEVICE, SURFACE LIGHT SOURCE, AND LIQUID-CRYSTAL DISPLAY APPARATUS EACH USING THE SAME - An illuminating lens includes: a light entrance surface through which light emitted from a light source enters the lens; and a light exit surface through which the light that has entered the lens exits the lens. The light exit surface has: a concave portion intersecting the optical axis; and a convex portion provided around the concave portion to extend continuously from the concave portion. The light exit surface is formed in a shape such that a curvature C of micro-segments of the light exit surface in a cross section including the optical axis has a maximum value at a position outward from the midpoint of the convex portion.07-29-2010
20100265435DISPLAY APPARATUS HAVING VARIABLE DIFFUSER FILM - In a display apparatus according to an embodiment, a variable diffuser film is disposed between a backlight unit generating light and a display panel displaying an image. The variable diffuser film transmits or scatters the light from the backlight unit in response to an electrical signal to control a viewing angle. The variable diffuser film is disposed between the first and second transparent layers and includes a polymer layer in which liquid crystal molecules transmitting or scattering the light according to the electrical signal are dispersed. The polymer layer has a thickness of about 3 micrometers to about 15 micrometers, and the liquid crystal molecules have an anisotropic refractive index (Δn) of about 0.15 to about 0.25. In one aspect, the display apparatus may automatically switch a narrow viewing angle mode and a wide viewing angle mode, thereby reducing power consumption necessary to switch the narrow and wide viewing angle modes.10-21-2010
20100182538LIQUID CRYSTAL DISPLAY DEVICE AND TELEVISION RECEIVER - A liquid crystal display device includes: (I) a liquid crystal panel including (i) a pair of substrates, which sandwich a liquid crystal layer, and (ii) optical members each provided so as to face an external surface of each of the pair of substrates, which surface is opposite to an internal surface of the each of the pair of substrates that faces the liquid crystal layer, the optical members each including a polarizer in pair; and (II) a backlight provided so as to face a surface of the liquid crystal panel, the surface being opposite to a display surface of the liquid crystal panel. The liquid crystal display device further includes a near-infrared region absorbing member that absorbs light in a near-infrared region of 900 nm to 1000 nm, the near-infrared region absorbing member being provided at least either in the liquid crystal panel or between the liquid crystal panel and the backlight. In a case where the near-infrared region absorbing member is provided in the liquid crystal panel, the near-infrared region absorbing member in the liquid crystal panel is at least one of the following members: (a) one of the pair of polarizers that faces the display surface of the liquid crystal panel, (b) one of the pair of substrates that faces the backlight, (c) one of the optical members that faces an external surface of the substrate that faces the backlight, which surface is opposite to an internal surface of the substrate that faces the liquid crystal layer, and (d) a pressure sensitive adhesive layer for adhering any one of the optical members.07-22-2010
20100014025BACKLIGHT DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER - A backlight device capable of preventing or reducing, even when an optical sheet bends, occurrence of luminance nonuniformity and/or shades due to the bend. The backlight device 01-21-2010
20080211990SURFACE LIGHT SOURCE DEVICE AND DISPLAY APPARATUS - A liquid crystal display apparatus is provided which has two or more options in selection of the range of viewing angles. A surface light source device according to the invention has a main surface from which light is emitted, and includes a plurality of light guide plates corresponding to a plurality of regions obtained by dividing the main surface in parallel; an optical film provided on the exit surface side of the light guide plates; and a light driver that controls the turning on and off of the plurality of light guide plates. The optical film includes a light-guide slit film which transmits light that is emitted from the light guide plates and that is within a certain range of angles.09-04-2008
20100182537INFORMATION PROCESSING APPARATUS - The present invention is directed to provide a convenient information processing apparatus capable of easily switching the view angle of a display device and an output of an illuminating device of the information processing apparatus in accordance with a using state and a user request. An information processing apparatus including a liquid crystal display device 07-22-2010
20100238378Optical unit, backlight device, liquid crystal module and liquid crystal display apparatus - An optical unit for use in a backlight device of a liquid crystal display apparatus, includes a light-diffusing component to diffract incident light and a light-collecting component having multiple microlenses each having a shape of a hemisphere- or semi-oval-like protrusion on a light-emitting side of the light-collecting component. The components are provided in this order on an optical path of light emitted from a light source of the backlight device. The light-diffusing component includes a diffusing section having a first surface that faces the light source and an opposite second surface, and first and second prisms provided on the first and second surfaces, respectively. Each prism has a cross section like a teeth of a saw. Each first prism has a summit protruding towards the light source. Each second prism has a summit protruding in an opposite direction of the first prism.09-23-2010
20100220261PLANAR LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME - The present invention provides a planar lighting device (09-02-2010
20100238379COMPOSITE POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE - There is provided a composite polarizing plate used for a liquid crystal display device comprising a liquid crystal cell, a front substrate, and a collimated light source device according to present invention includes a polarizer; and a light diffusion pressure-sensitive adhesion layer placed on a side of the polarizer, wherein when the composite polarizing plate is used for the liquid crystal display device, the light diffusion pressure-sensitive adhesion layer is arranged in contact with the front substrate.09-23-2010
20100253880LIGHT GUIDE PLATE, SURFACE-EMITTING APPARATUS, LIQUID CRYSTAL DISPLAY APPARATUS, AND METHOD OF PRODUCING A LIGHT GUIDE PLATE - A light guide plate includes a light-incident surface, a light-reflecting surface, and a light-emitting surface. The light-reflecting surface includes a plurality of first light diffusion portions and a second light diffusion portion. The plurality of first light diffusion portions each have a first concavo-convex height. The second light diffusion portion has a second concavo-convex height lower than the first concavo-convex height and is extended around the plurality of first light diffusion portions in a net-like manner. The light-emitting surface emits light that enters from the light-incident surface and is reflected by the light-reflecting surface.10-07-2010
20110058125LIGHT GUIDE ELEMENT, ILLUMINATION DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - A light guide element (03-10-2011
20100208166ILLUMINATING LENS, LIGHTING DEVICE, SURFACE LIGHT SOURCE, AND LIQUID-CRYSTAL DISPLAY APPARATUS - A light exit surface of an illuminating lens has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region and a total reflection region. When the position of a light source on the optical axis is defined as a starting point, the transmissive region transmits light that has been emitted from the starting point at a relatively small angle with respect to the optical axis, and the total reflection region totally reflects light that has been emitted from the starting point at a relatively large angle with respect to the optical axis. A bottom surface that surrounds a light entrance surface and faces oppositely to the light exit surface is provided with a projecting portion or a recessed portion for reflecting light that has been emitted from the light source, totally reflected repeatedly at the light exit surface, and then reached the bottom surface.08-19-2010
20100208167ILLUMINATING LENS, LIGHTING DEVICE, SURFACE LIGHT SOURCE, AND LIQUID-CRYSTAL DISPLAY APPARATUS - An illuminating lens includes a main body and a ring portion. The main body has a light exit surface, and the light exit surface has a first light exit surface recessed toward a point on the optical axis and a second light exit surface extending outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region in the center thereof, and a total reflection region on the peripheral side thereof. The ring portion has a back surface configured to guide the light that has been emitted from a light source, totally reflected repeatedly at the light exit surface, and then entered the ring portion to an end surface by total reflection.08-19-2010
20100118229LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR FABRICATING THE SAME - The present invention relates to a liquid crystal display device and a method for fabricating the same, and the liquid crystal display device may be configured by including a light guide plate with a plurality of movement prevention structures at both sides thereof, respectively; a lower cover with opening portions at the positions corresponding to the plurality of movement prevention structures, and on which the light guide plate being disposed; a light source unit disposed at a side of the light guide plate; a support main with insertion portions for inserting and mounting the movement prevention structures at the positions corresponding to the opening portions; a diffuser sheet and an optical sheet disposed on the light guide plate; and a liquid crystal panel disposed at an upper portion of the support main.05-13-2010
20090284685LIQUID CRYSTAL DISPLAY MODULE, WAVELENGTH DISPERSIVE DIFFUSION SHEET AND LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display module is provided to reduce a color shift. The liquid crystal display module is comprised of a liquid crystal panel in which the transmittance for incident illumination light has wavelength dependency that is different in both an incident angle and a wavelength, a light source for illuminating the liquid crystal panel from its back surface, and a wavelength dispersive diffusion sheet set between the liquid crystal panel and the light source, wherein the wavelength dispersive diffusion sheet has a characteristic to ease wavelength dependency of the liquid crystal panel.11-19-2009
20090073344OPTICAL SHEET, BACKLIGHT UNIT AND CRYSTAL DISPLAY DEVICE HAVING THE SAME - Provided are an optical sheet, a backlight unit and an LCD device having the same. The backlight unit includes a first layer, a second layer, and a refractive pattern. The first layer has a larger refractivity than an air layer, and the second layer has a larger refractivity than the first layer. The refractive pattern is disposed at a boundary surface between the first layer and the second layer and has ridges and furrows that change a traveling path of light. The optical sheet refracts light at least three times to condense the light in a direction perpendicular to a light-exiting surface.03-19-2009
20120242934BACKLIGHT SOURCES HAVING REDUCED THICKNESS AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A backlight source and a thinning method for the same are provided. The backlight source includes: a solid state light source array having a plurality of solid state light sources (09-27-2012
20090322986Color light guide panel and liquid crystal display - A color light guide panel, suitable for differentiating an incident light into multiple color lights is provided. The color light guide panel includes a substrate and a color light output structure. The substrate has multiple pixel regions, and the color light output structure is disposed in each of the pixel regions. The color light output structure includes a first nano-pattern, a second nano-pattern and a third nano-pattern. The incident light is scattered by the first nano-pattern for producing a first color light, scattered by the second nano-pattern for producing a second color light, and scattered by the third nano-pattern for producing a third color light. The color light guide panel can output uniform and high luminous first, second and third color light. Moreover, a liquid crystal display device having the above color light output structure is also provided.12-31-2009
20090153777LIQUID CRYSTAL DISPLAY DEVICE - An LCD device includes lower and upper substrates facing each other, a liquid crystal layer between the lower and upper substrates, a first polarizing plate on the upper substrate, a second polarizing plate below the lower substrate, and a backlight unit below the second polarizing plate. The second polarizing plate has a light-diffusion layer that is proximate to the backlight unit. The light-diffusion layer has projections that project towards and contact the backlight unit. These projections are smooth curves that do not damage the surface of the backlight unit. The total of the Haze formed by the first and second polarizing plates is at least 40%.06-18-2009
20110032453DIFFUSION SHEET AND LIQUID CRYSTAL DISPLAY DEVICE WITH THE SAME - A diffusion sheet adapted to minimize brightness difference between lights progressing in its oblique directions is discussed. The diffusion sheet according to an embodiment includes: a base film; a first diffusion material layer formed on an upper surface of the base film and configured to have a haze range of about 10˜40%; and a second diffusion material layer formed on a lower surface of the base film.02-10-2011
20080291364LIGHT EMISSION DEVICE AND DISPLAY DEVICE USING THE LIGHT EMISSION DEVICE AS A LIGHT SOURCE - A light emission device including: a light emission panel including at least two emissive regions spaced apart from each other and a non-emissive region between the emissive regions; and a light diffuser located in front of the light emission panel, the light diffuser including at least two first diffusion parts corresponding to the emissive regions and a second diffusion part corresponding to the non-emissive region, wherein the second diffusion part has diffusion transmittance that is greater than diffusion transmittance of the first diffusion parts.11-27-2008
20090079906PRISM SHEET AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An exemplary prism sheet according to a preferred embodiment includes a transparent main body. The transparent main body includes a light input surface and a light emitting surface opposite to the light input surface. A plurality of curved elongated V-shaped protrusions are formed on the light emitting surface. Each of the curved elongated V-shaped protrusions extends along a circular arc. The circular arcs have a same curvature, and centers of the circular arcs are aligned apart and in a straight line. A liquid crystal display device using the prism sheet is also provided.03-26-2009
20110025948Patterned volume diffuser elements - The present invention provides an optical diffuser element comprising a core layer and outer layers joined to the core layer, at least one of the outer layers comprising linear domains of varying diffusion and a continuous layer of uniform diffusion, and wherein at least one of the outer layers further comprises a microstructure pattern on its exterior surface opposite the core layer.02-03-2011
20090066880LIQUID CRYSTAL DISPLAY DEVICE - An object of the present invention is to provide a simply configured liquid crystal display device capable of providing a high front luminance when light obliquely enters a micro lens array. The liquid crystal display device comprises: a pair of polarizing plates which sandwich a pair of substrates; a liquid crystal layer sandwiched by the pair of substrates; transmission openings formed in a pixel to limit the quantity of light which penetrates the liquid crystal layer; condensing elements formed on the side of one of the substrates, opposite to the side on which the liquid crystal layer is disposed, to condense light to the transmission openings; and a planar light-emitting element which emits light to be applied to the condensing elements; wherein the light to be emitted from the planar light-emitting element forms a certain angle with respect to its perpendicular when emitted; and wherein the position of the transmission opening is relatively shifted with respect to that of the condensing element so as to increase the quantity of light which penetrates the transmission opening, in association with the light-emitting direction of the planar light-emitting element.03-12-2009
20110025949Backlight unit and liquid crystal display device having the same - A backlight unit capable of preventing a light leakage phenomenon caused by using a light guide plate of wedge type is disclosed. The backlight unit includes: at least one light source; a light guide plate configured to include a first portion with a first thickness disposed adjacent to the at least one light source, a second portion of plate shape having a second thickness thinner than the first thickness, and a wedge portion formed to connect the first and second portions and become gradually thinner from the first portion to the second portion; and a flexible printed circuit board loaded with the at least one light source and extended to cover the wedge portion of the light guide plate. The flexible printed circuit board is provided with a groove formed opposite a boundary area between the first portion and the wedge portion.02-03-2011
20110116013LIQUID CRYSTAL MODULE AND ELECTRONIC DEVICE - A liquid crystal module according to an embodiment of the present invention includes a liquid crystal panel, a transparent panel member configured to include a display section constituting a display image plane while overlapping the liquid crystal panel, and a step section connected to the display section and lower than an image plane position by one step, at least one light source disposed in the step section of the transparent panel member, and a diffusion mechanism provided in a part other than the display image plane of the display section and a face opposite thereto, and diffusing light from the light source.05-19-2011
20110116012PASSIVE DAYLIGHT-COUPLED BACKLIGHT WITH TURNING FILM HAVING PRISMS WITH CHAOS FOR SUNLIGHT VIEWABLE DISPLAYS - A passive daylight-coupled display having an LCD panel, a diffuser, a turning film behind the LCD panel, and a curved reflector behind the turning film. For passive backlighting, the diffuser transmits daylight to the reflector, which reflects the daylight to the LCD panel through the turning film and provides for substantially uniform distribution of the daylight on the LCD panel for backlighting it. The turning film has prisms with chaos for an improved viewer experience.05-19-2011
20110116014OPTICAL LAMINATE FILM, BACKLIGHT UNIT INCLUDING THE SAME, AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - An optical laminate film, a backlight unit, and a liquid crystal display module, the optical laminate film including a multilayer film composed of multiple layers including at least two polymers having different refractive indexes, the multilayer film transmitting only a light component vibrating in a direction parallel to one transmittance axis while reflecting other light components; an embossed diffusing film laminated on one side of the multilayer film, the embossed diffusing film having roughness on a surface thereof; and a microlens film laminated on another side of the multilayer film, the microlens film having microlenses arranged on a surface thereof.05-19-2011
20110085110Compound diffusion plate structure, backlight module, and liquid crystal display - A liquid crystal display, comprising: a liquid crystal display panel and a backlight module. The backlight module comprising: a reflection unit, a light emitting unit, and a compound diffusion plate structure. The light emitting unit has a plurality of light emitting components installed within the installation space of the reflection unit. The compound diffusion plate structure is placed on one side of the light emitting unit, comprising: a body unit and a printing micro diffusion unit. The body unit has a main layer, and a plurality of micro diffusion particles formed inside the body unit, allowing light to diffuse within the body unit. The printing micro diffusion unit has a plurality of convex lens units formed on a light entrance plane or a light exit plane of the body unit by means of printing.04-14-2011
20100220263Light source, display device, portable terminal device, and ray direction switching element - A planar light source includes a backlight that emits light in a planar shape, a ray direction regulating element that regulates a direction of light made incident from the backlight and emits the light, whereby a directivity of the light is improved, and in which a transparent area for transmitting light and an absorption area for absorbing light are formed, and a transparent and scattering switching element that is switchable between a state in which light which is transmitted by the ray direction regulating element and made incident on the switching element is transmitted and a state in which the light is scattered. The transparent areas are formed in a shape of a matrix including a plurality of rows and a plurality of columns, the transparent and absorption areas are formed alternately, and the absorption area is formed so that the transparent areas are separated.09-02-2010
20090059121Illumination Unit and Display Unit Incorporating the Same - An illumination device has at least one fluorescent tube, a lower frame supporting the fluorescent tube, a light diffusion plate which opposes the lower frame with the fluorescent tube being interposed therebetween for forward diffusion of output light of the fluorescent tube, a reflection sheet disposed along the fluorescent tube side of the lower frame for reflecting the fluorescent light toward the light diffuser plate, and an upside reflector covering an electrode of the fluorescent tube for reflecting the light toward the light diffuser. When letting a direction along a length of the fluorescent tube be a horizontal direction, a distance between the fluorescent tube and the reflection sheet at at least one of nearby portions of right and left ends of the illuminator is greater than such distance at a central portion thereof. A liquid crystal display (LCD) apparatus using the illuminator is also disclosed.03-05-2009
20110085111LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC APPARATUS - A liquid crystal display device includes: one side substrate; the other side substrate that is disposed to be opposed to the one side substrate; a liquid crystal layer that is sandwiched between the one side substrate and the other side substrate; and a light source that illuminates light on the liquid crystal layer from the outside of the other side substrate. At a specific peak wavelength, in a region shorter than a wavelength of blue light in a visible light region of the light illuminated from the light source, a transmittance from the other side substrate to the liquid crystal layer is smaller than a transmittance from the one side substrate to the liquid crystal layer.04-14-2011
20100039586OPTICAL ELEMENT AND BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - An optical element capable of increasing an angular field while improving luminance by condensing light, and a backlight unit and a liquid crystal display including the same. The optical element includes a light-transmitting base film; a plurality of diffusing cavities or convex diffusing structures formed in one surface of the base film to diffuse light entering the base film; and a light-condensing pattern formed in the surface of the base film where the diffusing cavities or convex diffusing structures are formed so as to condense incident light.02-18-2010
20100039585PLANAR ILLUMINATION DEVICE, AND IMAGE DISPLAY DEVICE - A laser light source (02-18-2010
20100045897CONDENSING FILM FOR LCD BACKLIGHT UNIT - There is provided a condensing film for an LCD backlight unit. The condensing film includes a base member unit; a condenser unit disposed in an upper surface of the base member unit and having unit lens groups sequentially arranged thereon, each of the unit lens group being composed of a combination of at least two lenses that are different in shape; and a reflector unit disposed in a lower surface of the base member unit and composed of an opening through which light passes and a reflective surface from which the light reflects. The condensing film configured thus may be useful to solve the problems regarding the viewing angle and the uniformity in brightness of a screen since the condensing film has a more moderate distribution of emitted light than the conventional condensing films.02-25-2010
20100053502PRISM SHEET AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - Disclosed are a prism sheet and a liquid crystal display having the same. The prism sheet includes a base and a plurality of prism mountains. The base includes a front surface and a rear surface facing the front surface. The prism mountains are integrally formed with the base on the rear surface of the base. At least one prism mountain includes a plurality of light incidence surfaces and a reflective surface. The light incidence surfaces receive light. The reflective surface is adjacent to one of the light incidence surfaces to reflect the light. A vertical angle of the prism mountains formed between the light incidence surface adjacent to the reflective surface and the reflective surface, is in a range of about 70° to about 100°.03-04-2010
20090153776PRISM SHEET, METHOD FOR MAKING THE SAME AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - An exemplary prism sheet includes a transparent main body. The transparent main body has a surface. A plurality of first elongated micro-protrusions and second elongated micro-protrusions protrude from the surface of the main body. Each of the first elongated micro-protrusions extends along a first direction. Widths and heights of each of the first elongated micro-protrusions vary along the first direction. Each of the second elongated micro-protrusions extends along a second direction that intersects with the first direction. Widths and heights of each of the second elongated micro-protrusions vary along the second direction. A method for making the prism sheet and a liquid crystal display device using the prism sheet are also provided.06-18-2009
20090027594DISPLAY PANEL AND DISPLAY DEVICE HAVING THE SAME - A display panel includes a liquid crystal layer, an array substrate and a color filter substrate. The array substrate has a plurality of data lines, a plurality of gate lines and a plurality of pixel regions. The electrode for a storage capacitor is formed on each of the pixel regions. The color filter substrate is combined with the array substrate to receive the liquid crystal layer therebetween. The color filter substrate includes a first region where a color filter is formed and a second region where an opening is formed. The opening corresponds to the electrode for the storage capacitor. Thus, light reflected by the electrode for the storage capacitor exits the display panel through the opening, thereby enhancing an optical reflectivity of each pixel region.01-29-2009
20110075069LIQUID CRYSTAL DISPLAY DEVICE AND BACKLIGHT UNIT - Disclosed is a liquid crystal display including a liquid crystal panel, a light guide plate that transfers light from a light source to the liquid crystal panel and has a pattern formed on a base surface, a reflection plate that is positioned under the light guide plate and seated on a bottom cover, and a diffusing plate that is positioned between the light guide plate and the reflection plate and has a protection layer formed on a surface to face the light guide plate and a diffusing layer formed on the other surface to face the reflection plate.03-31-2011
20110075070LIQUID CRYSTAL DISPLAY DEVICE - A LCD device includes first and second LCD panels stacked one on another. Each of the first and second LCD panels includes a pair of transparent substrates, a liquid crystal layer sandwiched therebetween, and a pair of polarizing films sandwiching therebetween the pair of transparent substrates. A light diffusion layer having light diffusion function is interposed between the first LCD panel and the second LCD panel. The light diffusion layer reduces the intensity of the light passed by the first LCD panel, thereby alleviating the periodicity of the arrangement of dark areas and bright areas to alleviate the moire caused by light interference.03-31-2011
20110043723Lighting Device for Liquid Crystal Screen - A lighting device for liquid crystal display provides as output a polarized extended light flux. It comprises a light source 02-24-2011
20110249220IMAGE DISPLAY APPARATUS AND BACKLIGHT APPARATUS USED THEREFOR - A plurality of backlight blocks are aligned, each block includes light sources and a unit light guide plate for guiding light from the light sources to the side of a liquid crystal panel, unit diffusion patterns are formed in a zigzag alignment on the unit light guide plate and another diffusion pattern is formed on the back of the unit light guide plate. One side of the unit light guide plate is defined as a light entrance surface and LEDs as the light sources are aligned along the light entrance surface to satisfy p≧a≧c where a indicates the size of the unit diffusion pattern in a direction orthogonal to an exit optical axis of the LEDs, c indicates the size of an LED emission surface in the direction of alignment of the LEDs, and p indicates the pitch of alignment of the light sources.10-13-2011
20100277672ILLUMINATING LENS, AND LIGHTING DEVICE, SURFACE LIGHT SOURCE, AND LIQUID-CRYSTAL DISPLAY APPARATUS EACH USING THE SAME - An illuminating lens includes: a light entrance surface through which light emitted from a light source enters the lens; and a light exit surface through which the light that has entered the lens exits the lens. The light exit surface has: a concave portion intersecting the optical axis; and a convex portion provided around the concave portion to extend continuously from the concave portion. The light exit surface is formed in a shape such that a curvature C of micro-segments of the light exit surface in a cross section including the optical axis has a maximum value at a position outward from the midpoint of the convex portion.11-04-2010
20100066946BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A backlight assembly includes an optical member that diffuses light generated from lamps. The optical member includes first and second diffusion members that are designed to have light transmittance that complementarily vary according to areas. Thus, an optical member capable of supplying light having uniform brightness onto the whole display area of the LCD is easily designed.03-18-2010
20110157519LIGHT SOURCE APPARATUS AND DISPLAY APPARATUS USING LIGHT SOURCE APPARATUS - Disclosed is a light source apparatus including a light guide plate, a plurality of optical sheets and a frame, wherein one of the plurality of optical sheets is a prism sheet, the prism sheet having (i) a plurality of prisms formed on one surface thereof and (ii) one or more projecting pieces which are integrally formed with the prism sheet, the one or more projecting pieces engage to the frame, at least one of the one or more projecting pieces is a dark part suppressing projecting piece, sides making a pair of sides adjoining the dark part suppressing projecting piece are dark part suppressing sides, a first angle formed by the pair of dark part suppressing sides is equal to or smaller than a dark part suppressing angle, and second angles making a pair of angles formed with a straight line and each of sides making a pair of dark part suppressing sides are equal to or smaller than half of the dark part suppressing angle, the straight line (i) passing through a region formed between the pair of dark part suppressing sides, (ii) passing through an intersection point of the pair of dark part suppressing sides and (iii) being parallel or perpendicular to ridge lines of the prisms.06-30-2011
20090185107LOW PROFILE BACKLIGHT APPARATUS - A backlight apparatus includes a point source of radiant electromagnetic energy. A total internal reflection (TIR) lens has a vertical central axis located along a path of the radiant electromagnetic energy. The TIR lens receives and evenly distributes the radiant electromagnetic energy at an output face. The radiant electromagnetic energy exiting the TIR lens is substantially collimated and defines vertical optical paths parallel to the vertical central axis. A first diffuser receives the radiant electromagnetic energy from the output face of the TIR lens and spreads the radiant electromagnetic energy to a predetermined first angle relative to the vertical optical paths.07-23-2009
20090128738Light-Transmitting Resin Board - There is provided a light-transmitting resin plate for a liquid crystal display which has achieved conversion of a linear light source into a surface light source together with a higher luminance by minimizing the loss of the transmitted light due to a light-diffusing agent and forming a specific semi-elliptic convex lens shape on the light-exiting surface side. There is also provided a light-transmitting resin plate which can satisfy a long-term optical stability of a backlight as well as shape stability of the resin plate.05-21-2009
20090147179Prism Sheet and Production Method thereof and Surface Light Source Device - A prism sheet provided with an elongated prism formed surface (06-11-2009
20080284943Multifunctional optical sheet and liquid crystal display device including the same - A multifunctional optical sheet for a liquid crystal display device includes a substrate diffusing incident light; a light-concentrating layer on the substrate and including a plurality of patterns that arranged to form alternating peaks and valleys; and reflection patterns between the substrate and the light-concentrating layer corresponding to the valleys of the light concentrating layer.11-20-2008
20080252817Backlight module and liquid crystal display having same - A liquid crystal display (10-16-2008
20080252816LIQUID CRYSTAL DISPLAY DEVICE HAVING IMPROVED VIEWING ANGLE AND BRIGHTNESS - A liquid crystal display with an improved viewing angle and brightness is provided. The liquid crystal display includes a light source unit and a polarized light guide plate having an incident surface onto which unpolarized light from the light source unit is incident. The polarized light guide plate polarizes, collimates, and out-couples the incident light. The liquid crystal display also includes a liquid crystal panel which modulates the light out-coupled and illuminated from the polarized light guide plate to form images, and a diffusion layer which diffuses the light modulated in the liquid crystal panel.10-16-2008
20110261290DISPLAY APPARATUS - Provided is a display apparatus, which includes a display panel and a backlight unit. The backlight unit is disposed behind the display panel to provide light. The backlight unit includes a first layer, a light source, and a second layer. The light source is disposed on the first layer. The second layer includes a receiving part surrounding the light source, and is disposed on an upper side of the first layer to transmit and diffuse light emitted from the source. A space is disposed between the receiving part and the light source.10-27-2011
20100283942ILLUMINATING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - An illuminator 11-11-2010
20100141869PASSIVE AND HYBRID DAYLIGHT-COUPLED BACKLIGHTS FOR SUNLIGHT VIEWABLE DISPLAYS - A passive daylight-coupled display having an LCD panel, a diffuser, and a curved reflector behind the LCD panel. For passive backlighting, the diffuser transmits daylight to the reflector, which reflects the daylight to the LCD panel and provides for substantially uniform distribution of the daylight on the LCD panel for backlighting it. A hybrid display includes both a passive backlight and an active backlight for providing backlighting from an active light source.06-10-2010
20110261289HYBRID TYPE LIQUID CRYSTAL DISPLAY DEVICE - The present disclosure relates to a hybrid type liquid crystal display device. The present disclosure suggests a hybrid type liquid crystal display device comprising a liquid crystal display panel having a display area; and a window area defined within the display area, wherein an image disposed at outside of the liquid crystal display panel is shown in front of the liquid crystal panel through the window area. The present disclosure suggests a hybrid type display device in which main video data is represented using the liquid crystal display device, an additional image represented on an external screen is shown through the liquid crystal display device, or the external image can be shown by overlapping with the main video data of the liquid crystal display device, as needed.10-27-2011
20110134368SYSTEM AND METHOD FOR PROVIDING BACKLIGHT USING A DIRECTIONAL REFLECTIVE SURFACE - The present embodiments are directed to a backlight illumination system. The backlight illumination system includes a light source adapted to uniformly emit light in numerous directions for illuminating a display unit. The backlight illumination system further includes a reflector disposed behind the light source, wherein the reflector is adapted to reflect the uniformly emitted light along a desired direction to provide backlight illumination to the display unit.06-09-2011
20110134365LIQUID CRYSTAL DISPLAY DEVICE INCLUDING BACK LIGHT UNIT HAVING LED ARRAY - The present disclosure relates to a back light unit having an LED array structure for reducing light leakage problem at edge portion. A liquid crystal display device comprises a liquid crystal display panel; an optical sheet disposed under the liquid crystal display panel; and an LED array having red LED, green LED and blue LED are sequentially arrayed under the optical sheet, wherein one portion of an outermost LED of the LED array is included within an area covered by the liquid crystal display panel, and other portion of the outermost LED of the LED array is excluded from the area covered by the liquid crystal display panel.06-09-2011
20110096266SYSTEM AND METHOD FOR PROVIDING BACKLIGHTING IN LIQUID CRYSTAL DISPLAY (LCD) DEVICES - An exemplary display device is provided having increased brightness and light distribution uniformity, resulting in improved backlighting. The exemplary display device comprises a plurality of lamps arranged such that each of the lamps is substantially parallel with the others. The exemplary display device additionally comprises a holographic diffuser aligned so that a first diffusion axis diffuses light produced by the plurality of lamps in a first direction and a second diffusion axis diffuses light produced by the plurality of lamps in a second direction, the first direction being substantially perpendicular to the plurality of lamps and the second direction being substantially parallel to the plurality of lamps, wherein substantially more of the light produced by the plurality of lamps is diffused in the first direction. The diffusion of the light output produced by the plurality of lamps by the holographic diffuser creates the effect of a single uniform illumination source.04-28-2011
20110096265BACKLIGHT UNIT AND DISPLAY DEVICE INCLUDING THE SAME - Provided is a backlight unit capable of increasing luminance and of reducing unevenness in luminance. The backlight unit includes: a light diffusing member provided to cover a light emitting element mounted on a surface of a substrate; and a first light reflective member having a hole portion opened larger in size than an outer shape of the light diffusing member, the first light reflective member being provided on the surface of the substrate while having the light diffusing member protrude from the hole portion. In addition, a second light reflective member is further provided on the surface of the substrate, and the second light reflective member covers at least a part of a region corresponding to a gap left between the light diffusing member and the hole portion of the first light reflective member.04-28-2011
20100110337BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A backlight assembly including direct-type lamps and an edge-type lamp and a liquid crystal display having the backlight assembly. The direct-type lamps are arranged with a predetermined interval to emit light, and the edge-type lamp is provided at a side portion of a light guide plate provided above or below the direct-type lamps. The light guide plate and a light guide pattern output light, which is emitted from the edge-type lamp, through a space between two adjacent direct-type lamps. The backlight assembly supplies light to the light receiving region such that brightness is uniformly distributed throughout the light receiving region regardless of the position of the direct-type lamps.05-06-2010
20100110336OPTICAL ELEMENTS, BACKLIGHT MODULES, AND LIQUID CRYSTAL DISPLAY EMPLOYING THE SAME - Optical elements and backlight modules employing the same are provided. The optical element can be a brightness enhancement diffusion complex film, comprising a cholesteric liquid crystal film and a transparent optical film directly disposed on the cholesteric liquid crystal film. Particularly, the whole transparent optical film directly contacts to the cholesteric liquid crystal film, in the absence of an intermediate located between the transparent optical film and the cholesteric liquid crystal film.05-06-2010
20100110335Display unit with improved backlighting - A display unit is disclosed that includes a liquid crystal panel and a backlighting panel. The backlighting panel includes a front light emitting surface patterned with pixels and a back reflective surface. The display unit also includes a controllable light source, that preferably includes light emitting diodes that transmit light into the backlighting panel through side wall of the backlighting panel. The display unit is preferably used in portable electronic devices, such as personal digital assistants (PDAs), cellular phones and digital entertainment systems.05-06-2010
20100214507Back light unit and liquid crystal display comprising the same - Disclosed are a backlight unit capable of guiding light generated by LEDs to a light guide panel in order to eliminate brightness fault, as well as a light crystal display including the same. The backlight unit includes a light guide panel, an LED arranged at a lateral side of the light guide panel, and a light guide bar with at least one light diffusion pattern to scatter light generated by the LED and admit the scattered light into the light guide panel, thereby uniformly guiding the light generated by the LED to the light guide panel.08-26-2010
20100066945BACKLIGHT DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVER - A backlight device is provided with a cold cathode fluorescent tube as a first light source that emits light of green, and a cold cathode fluorescent tube as a second light source that can be switched on independently from the first light source and emits light of red and blue. A diffusion member provided on the light source side of a diffusion plate is disposed opposite to the first light source so as to diffuse green light.03-18-2010
20100195021OPTICAL MEMBER, LIGHTING DEVICE FOR DISPLAY DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER - An optical member 08-05-2010
20110181810OPTICAL PATH UNIT AND LIQUID CRYSTAL DISPLAY DEVICE - An optical path unit and a liquid crystal display device excellent in luminance in the front direction are provided. A backlight unit 07-28-2011
20110134366Backlight Module and Display Device Having the Same - The present invention discloses a backlight module and a display device comprising the backlight module. The backlight module includes a light source, a light guide plate and a frame, wherein the light guide plate has a light entrance end and a first side. An angle is included between the light entrance end and the first side, wherein a plurality of light diffusing structures are formed on the light entrance end. The light source is disposed at a position corresponding to the light entrance end and emits a light toward the light diffusing structures. The frame has a first wall facing an inner surface of the first side. A centre line perpendicular to the light entrance end is defined on the light guide plate, wherein the distance between the inner surface and the centre line increases in a direction toward the light source.06-09-2011
20090174839LIQUID CRYSTAL DISPLAY - In a liquid crystal display device of a transflective type, the viewing angle characteristics of displaying in the transmission mode can be sufficiently improved, and yet bright displaying in the reflection mode can be realized. The liquid crystal display device is a liquid crystal display device of a transflective type including a liquid crystal display panel and an illuminator. The liquid crystal display panel includes a first light diffusing element disposed at the viewer's side of a liquid crystal layer and a second light diffusing element disposed at the opposite side of the liquid crystal layer from the viewer.07-09-2009
20100020267BACKLIGHT APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS - A backlight apparatus is provided that enables a balance of brightness to be maintained over the entire area of a display screen and long life to be achieved. The surface of substrate 01-28-2010
20120147292BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY APPARATUS USING THE SAME, AND LIGHT-EMITTING DIODE USED THEREFOR - There are provided light-emitting layer provided on transparent substrate and emitting light of a specific wavelength, mirror layer formed on a light exit side of light-emitting layer and including a function of reflecting light emitted from light-emitting layer, reflecting layer provided on a side of substrate in a manner to interpose light-emitting layer between mirror layer and reflecting layer; and a diffusion layer that diffuses light emitted from light-emitting layer is disposed between mirror layer and reflecting layer.06-14-2012
20110051044LIGHT QUANTITY CONTROL MEMBER, SURFACE LIGHT SOURCE UNIT AND DISPLAY DEVICE - A light quantity control member includes a light diffusion part formed by light diffusion members for diffusing light from a LED. The light diffusion part includes a first rectangular area positioned at the center of light flux from the LED and second rectangular areas positioned around the first rectangular area. The first rectangular area has an occupied area of the light diffusion members larger than any other second rectangular areas. If respective distances between a first center of the first rectangular area and respective second centers of the second rectangular areas are equal to each other, the occupied areas of the diffusion members of the second diffusion areas become equal to each other. The longer the distance between the first center of the first rectangular area and the second center of the second rectangular area gets, the smaller the occupied area of the light diffusion members of the second rectangular area becomes.03-03-2011
20110051043BACKLIGHT UNIT AND DISPLAY DEVICE - A backlight unit and a display device including the backlight unit are discussed. According to an embodiment, a light generating device comprising: arrays of light source devices arranged on a first layer and including a first light source device and a second light source device configured emit light in opposite directions, at least one of the first and second light source devices including: a housing having inclined inner walls that define a cavity, a light emitting diode disposed in the cavity and configured to generate the light, and at least one material filled in the cavity; a reflection layer disposed on the first layer and configured to reflect the light emitted from the light source devices; and a second layer covering the light source devices and the reflection layer.03-03-2011
20110051042LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device is provided in which, even when divided light guide plate blocks are thermally expanded or contracted as a result of a temperature change, the generation of clearances and mechanical deformations between such divided light guide plate blocks is prevented, making it possible to reduce the brightness unevenness of the liquid crystal display device. To realize the above feature, light guide plate blocks are arranged such that one or two of them are arranged in each horizontal row with only an upper side of each light guide plate block fixed to a chassis and, furthermore, such that the upper side fixed to the chassis of each light guide plate block is based on a center in the horizontal direction of the liquid crystal display panel so as to reduce the effects of thermal expansion and contraction of each light guide plate block.03-03-2011
20100060817Backlight unit and liquid crystal display device including the same - A backlight unit for a liquid crystal display panel includes a diffusor that diffuses light emitted from a front surface thereof, a reflective plate that reflects light toward a rear surface of the diffusor; and a collimator that collimates the light emitted from the front surface of the diffusor toward the liquid crystal display panel. The collimator includes a base layer that refracts the diffused light from the diffusor toward the liquid crystal panel, a collimating layer of lenses disposed along two perpendicular directions on a front surface of the base layer, and a reflective pattern on a rear surface of the base layer along a boundary of each of the lenses, the reflective pattern exposing an aperture portion of the base layer facing each of the lenses.03-11-2010
20110019129Display device - A liquid crystal display panel formed by using a TFT substrate and a color filter substrate is polished to decrease the thickness thereof so that it can be curved. The liquid crystal display panel and various optical sheets are sandwiched between a frame forming a curved surface and a light guide plate forming a curved surface, to thereby form a curved surface. An upper polarizer plate and a lower polarizer plate are, respectively, sandwiched between the surface cover and the liquid crystal display panel, and between the liquid crystal display panel and the optical sheet, and are not adhered or are partly adhered to the liquid crystal display panel.01-27-2011
20120307181DISPLAY DEVICE AND BACKLIGHT MODULE THEREOF - A display device and a backlight module are provided in the present invention. The display device includes the backlight module and a liquid crystal display panel. The backlight module, which is used to provide a backlight source for the liquid crystal display panel, includes a luminant device and a micro-lens array. The luminant device is disposed under the liquid crystal display panel, and the luminant device has a plurality of first luminant regions and a plurality of second luminant regions. The micro-lens array is disposed between the luminant device and the liquid crystal display panel. The micro-lens array includes a plurality of micro-lenses, and each of the micro-lenses overlaps at least one first luminant region and at least one second luminant region in a direction perpendicular to the liquid crystal display panel.12-06-2012
20110304798ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - An illumination device 12-15-2011
20110109842LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device of the present invention includes a liquid crystal display panel and a backlight for radiating light to the liquid crystal display panel. The backlight includes a hot-cathode tube (linear light source) (05-12-2011
20120099049Backlight and Display Device - A backlight of which power consumption can be reduced is provided. Further, by effective use of light emitted from the backlight, a display device with low power consumption is provided. The display device includes a light source device in which a plurality of light-emitting elements are arranged, a diffusion plate which is bonded to the light source device, a first polarizing plate which is bonded to the diffusion plate, a liquid crystal panel which is bonded to the first polarizing plate, and a second polarizing plate which is bonded to the liquid crystal panel. The light source device includes an organic resin having a projected spherical surface and a light-transmitting property covering each of the plurality of light-emitting elements and an organic resin having a planarized surface and a light-transmitting property covering the plurality of light-emitting elements and the organic resin having a projected spherical surface and a light-transmitting property.04-26-2012
20110317098LIQUID CRYSTAL DISPLAY DEVICE AND FABRICATING METHOD THEREOF - A liquid crystal display device that reduces manufacturing cost, contributes to a thin profile, and generates uniform brightness, and a fabricating method thereof are disclosed.12-29-2011
20110317097BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight unit for a liquid crystal display (“LCD”) device includes a light emitting diode (“LED”) light source and a light conversion layer disposed separate from and above from the LED light source. The light conversion layer includes a semiconductor nano crystal, converts light emitted from the LED light source to white light and provides the white light to a liquid crystal panel of the LCD.12-29-2011
20110317096PLANAR LIGHTING DEVICE AND LIQUID-CRYSTAL DISPLAY DEVICE WITH THE SAME - According to one embodiment, a planar lighting device includes a plurality of light sources, a light guide layer provided on a light-emission side of the light sources and configured to guide light from the light sources, and a reflective layer provided on an opposite side of the light guide layer to the light sources and through which a part of the light is transmitted. The light guide layer includes light-scattering properties for scattering light and is formed so that optical transmittance T based on the light-scattering properties is 40%≦T≦93%.12-29-2011
20110317099LIGHT DIFFUSING ELEMENT, POLARIZING PLATE WITH LIGHT DIFFUSING ELEMENT, LIQUID CRYSTAL DISPLAY APPARATUS USING BOTH, AND MANUFACTURING METHOD FOR LIGHT DIFFUSING ELEMENT - There is provided a light diffusing element, which has a high haze value and strong diffusibility, has backscattering suppressed, and is low in cost and excellent in productivity.12-29-2011
20120062820DIFFUSION SHEET, BACKLIGHT, LIQUID CRYSTAL DISPLAY APPARATUS AND METHOD OF MANUFACTURING DIFFUSION SHEET - A diffusion sheet includes a light-transmissive base member, a plurality of structures, and a flattened portion. The light-transmissive base member has a first main surface and a second main surface. The plurality of structures have convex shapes, which are randomly formed on the first main surface. The flattened portion is formed among the plurality of structures on the first main surface and has a surface roughness (Ra) equal to or lower than 0.6 μm.03-15-2012
20120044440LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device provided with a back light device can relieve lamp images without lowering the utilization efficiency of the light emitted from the back light device.02-23-2012
20120062819LED CIRCUIT WITH ZENER DIODES - A light emitting diode (LED) circuit having a plurality of LEDs electrically connected in series with a zener diode electrically connected to each LED in parallel. If an LED were to fail, the current can be routed around the failed LED, through the zener diode, and continue through the rest of the LEDs in the series connection. Thus, a failure in one LED does not cause the entire series string to lose their illumination. Some embodiments may place several LED strings in parallel with one another. Exemplary embodiments may mount the LCDs on a metal core printed circuit board (PCB). Further embodiments may place a thin metallic sheet or metallic surface on the rear surface of the PCB and in thermal communication with the PCB and/or LEDs.03-15-2012
20120002137LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device of an embodiment has: a semiconductor laser diode emitting a first laser beam; a first reflecting unit configured to reflect the first laser beam and form a second laser beam having a one-dimensionally spread distribution; and a second reflecting unit configured to reflect the second laser beam and form a third laser beam having a two-dimensionally spread distribution. The device also has: an optical switch using liquid crystal, the optical switch being configured to control passage and blocking of the third laser beam; and a first scattering unit scattering the third laser beam.01-05-2012
20120008066LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device, including: a liquid crystal panel including a display region for displaying an image; a linear illuminator disposed below the display region and extending linearly; and a diffusion plate disposed between the liquid crystal panel and the linear illuminator, in which the diffusion plate includes a thick portion which is formed to be thicker than another portion located below the display region, and the thick portion is formed opposing to the linear illuminator.01-12-2012
20080316392Liquid Crystal Display, Optical Sheet Manufacturing Method, and Optical Sheet - A liquid crystal display, optical sheet manufacturing method, and an optical sheet are provided. The occurrence of moiré is prevented while suppressing a reduction in front luminance. The liquid crystal display includes: a liquid crystal display panel; a light source arranged on a back surface side of the liquid crystal display panel; an optical sheet with a light-condensing property arranged between the liquid crystal display panel and the light source, the optical sheet having a number of irregularities arranged continuously on a principal surface of the optical sheet; and a diffuser sheet arranged between the liquid crystal display panel and the optical sheet. The liquid crystal display is constructed so that when an arrangement pitch of the irregularities of the optical sheet is P [μm], a haze value of the diffuser sheet is H [%], a total light transmittance of the diffuser sheet is Tt [%], and a pixel pitch of the liquid crystal display panel is Pp [μm], the following relationship is satisfied: (H/Tt)·(Pp/P)≧1.6.12-25-2008
20090296024LIGHT DIFFUSER PLATE WITH PRIMER LAYER, PROCESS FOR PRODUCING THE SAME, LAMINATED OPTICAL MEMBER, SURFACE LIGHT SOURCE APPARATUS AND LIQUID CRYSTAL DISPLAY - The present invention relates to a light-diffuser-plate-with-primer-layer, which permits lamination of an optical film or the like thereon with a sufficient bonding strength, and a process for producing the same efficiently and at a lower cost.12-03-2009
20120057101LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE, AND LIQUID CRYSTAL DISPLAY APPARATUS - A light emitting device (03-08-2012
20120026428LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device provided with a back light device can relieve lamp images without lowering the utilization efficiency of the light emitted from the back light device.02-02-2012
20120105769LIGHT DIFFUSING FILM, POLARIZING PLATE, IMAGE DISPLAY DEVICE AND PRODUCTION METHOD OF LIGHT DIFFUSING FILM - A light diffusing film contains a thermoplastic resin as the main component and containing, in the thermoplastic resin, (A) a light-transmitting particle having an average primary particle diameter of 1 to 10 μm, wherein there is substantially no refractive index difference between the thermoplastic resin and the light-transmitting particle, wherein one surface has concavoconvex shape, the total haze value is from 5 to 40%, and the average film thickness is from 20 to 200 μm.05-03-2012
20120105770BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight module is provided and the backlight module comprises a back plate, a frame, a light source, and a diffusion plate, wherein the diffusion plate is connected with and fixed to the frame or the back plate by hold structures that impose a tension effect on the diffusion plate. Also, a liquid crystal display device comprising the backlight module is provided.05-03-2012
20120154712LIQUID CRYSTAL DISPLAY DEVICE AND BACKLIGHT MODULE THEREOF - A liquid crystal display (LCD) device includes an LCD panel, a backlight module and an anti-reflective layer. The backlight module further includes a light source for providing lights, a light guide plate having a light-emitting surface and a lower surface opposite to the light-emitting surface, and a first prism layer and a second prism layer positioned on a side of the light-emitting surface. The anti-reflective layer is positioned between the first prism layer and the second prism layer, or is positioned between the first prism layer and the LCD panel.06-21-2012
20090135336Light source, display device, portable terminal device, and ray direction switching element - A planar light source includes a large variable width of an irradiation angle of illumination light, a display device having a large variable width of an angle of field that uses the planar light source, a portable terminal device that uses the display device, and a ray direction switching element that is incorporated in the planar light source. A beam direction regulating element (a louver), which controls a direction of light, and a transparent and scattering switching element, which can switch the transparent state and the scattering state according to ON and OFF of an applied voltage, are provided between a backlight and a liquid crystal panel, whereby it is possible to increase a variable width of an irradiation angle of light in the planar light source and increase a variable width of an angle of field of the liquid crystal display device that uses the planar light source.05-28-2009
20090135335OPTICAL FILM AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - An optical film and a liquid crystal display including the optical film are disclosed. The optical film includes a reflective polarizing film, a first primer layer on the reflective polarizing film, and a first projection on the first primer layer.05-28-2009
20110090425OPTICAL DEVICE, UNIFORM ILLUMINATION DEVICE, OPTICAL SHEET, BACKLIGHT UNIT, AND DISPLAY UNIT - The present invention can provide an optical device, an optical uniform device, an optical sheet and a backlight unit and a display apparatus. In the present invention, a lamp image can be removed by uniformly emitting incident light from a plurality of light sources. Further, even if a distance between a light source and an optical device and between a light source and an optical uniform device are short, warpage due to heat generated from a light source does not occur.04-21-2011
20130010230Backlight Device and Liquid Crystal Display Apparatus - Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the light source element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the light source element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. The reflection sheet is configured such that the angle between the optical axis of the lens of the light source element, and a line connecting a light emitting surface of each LED of the light source element and an end portion of the backlight device on the long side thereof is within a range of 60°≦θm≦80°.01-10-2013
20130201426BACKLIGHT DEVICE, LIQUID CRYSTAL DISPLAY APPARATUS, AND LENS - Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. The incident surface is a continuous concave surface, and the projected shape thereof as seen from an upper surface of the lens is an ellipse centered on an optical axis of the lens.08-08-2013
20110102709DIRECT TYPE BACKLIGHT MODULE AND APPLICATION THEREOF - A direct type backlight module and an application thereof are described. The direct type backlight module comprises a rear frame module and a light source, wherein the light source is deposed on the rear frame module. The rear frame module comprises a plurality of frameworks, wherein the frameworks are combined to form a frame. The direct type backlight module is suitable for applying in a liquid crystal display (LCD) device.05-05-2011
20100289985ILLUMINATION UNIT AND DISPLAY DEVICE WITH THE ILLUMINATION UNIT - An illumination unit of the present invention includes: a light guide plate; a point light source for illuminating at least one side surface of the light guide plate; and an anisotropic light diffuser provided between the light guide plate and the point light source for diffusing light emitted from the point light source. The anisotropic light diffuser has anisotropy by which a degree of diffusion differs depending on directions. The anisotropic light diffuser is an anisotropic light diffusion sheet with a particulate dispersion phase defined in an anisotropic light diffusion layer thereof.11-18-2010
20100245715METHOD OF MAKING ANTIGLARE FILM, ANTIGLARE FILM, POLARIZING PLATE, IMAGE DISPLAY DEVICE, AND TRANSMISSIVE/SEMI-TRANSMISSIVE LIQUID CRYSTAL DISPLAY - In a method for making an antiglare film including the casting, the releasing, the drying, the applying and the curing as defined herein, the transparent particles have an average primary particle size of greater than 2.5 μm and not greater than 12 μm, the transparent base has on at least one side thereof flat portions substantially parallel to a film-forming plane and rounded protrusions arising from the transparent particles, the protrusions having a maximum height Rt from the flat portions of from 1 to 15 μm, and the cured layer has an average thickness of from 1 to 15.0 μm and a surface profile with an arithmetic average roughness Ra, a mean spacing between peaks Sm, and an average slope θa, all as measured in accordance with JIS B0601, satisfying the relationships (1) to (3) as defined herein.09-30-2010
20100245714PRODUCTION METHOD OF LIGHT SCATTERING FILM, LIGHT SCATTERING FILM, POLARIZING PLATE, IMAGE DISPLAY DEVICE, AND TRANSMISSIVE/SEMI-TRANSMISSIVE LIQUID CRYSTAL DISPLAY DEVICE - A method for producing a light scattering film is provided and includes: casting onto a support a dope containing at least a thermoplastic resin and light transmitting particles to provide a casted film, and peeling and drying the casted film to prepare a light transmitting base material; applying an coating solution containing at least a curable compound, a polymerization initiator, and a solvent onto the light transmitting base material and drying the solvent; and curing the curable compound to form a cured layer. At least one surface of the light transmitting base material has an asperity shape, the light transmitting particles have an average primary particle size greater than 2.5 μm but not greater than 12 μm, the cured layer has an average thickness of 0.1 μm or greater but not greater than 10.0 μm, and the cured layer satisfies the specific formulae.09-30-2010
20100245713LIGHT SOURCE DEVICE, BACKLIGHT DEVICE, AND LIQUID CRYSTAL DISPLAY - A light source device 09-30-2010
20120127398BACKLIGHT SYSTEM AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A backlight system includes: a light-emitting section (05-24-2012
20100214508Backlight Unit and Liquid Crystal Display Device Using the Same - A backlight unit having a LED light source includes a light guide plate partitioned in areas each having a tapered shape formed of a thick portion and a thin portion. The light guide plate is formed such that a thick portion and a thin portion are repeated at certain intervals, and the repeated thick portions and the repeated thin portions gradually decrease in thickness. The LED light source is attached to a lateral side of each thick portion. Grooves are formed in the light irradiation direction of the LED light source and in a direction perpendicularly intersecting the light irradiation direction. Each of the grooves is formed in an concave shape (V-shape or trapezoid-shape). There is a relation 0.2/30<=W/D<0.1 where D denotes the distance between the light guide plate and a light diffusion plate, and W denotes the width of each of the grooves. An inclination angle θ relative to the center of each of the grooves is between 9 and 15 degrees inclusive.08-26-2010
20100208165LIGHT CONTROL LAYER OF BACKLIGHT, BACKLIGHT, LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD FOR PRODUCING LIGHT CONTROL LAYER OF BACKLIGHT - A light control layer (08-19-2010
20100208168LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device which can reduce the number of cables so as to prevent the occurrence of the brightness irregularities. The liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes an LED substrate on which a plurality of LEDs are mounted, a reflection sheet which is arranged on the LED substrate, a diffusion plate which is arranged in a spaced-apart manner from the LED substrate, side supports which support the diffusion plate at end portions of the LED substrate, connectors which are provided for electrical connection with an external device, and electronic parts which are electrically connected with at least one of these LEDs. The connectors and the electronic parts are mounted on the LED substrate below the side supports. The side supports exhibit higher light reflectance than the connectors and the electronic parts.08-19-2010
20120212689DISPLAY BACKLIGHT MODULE AND METHOD FOR THE SAME - Disclosed are a display backlight module and its manufacturing method. A multilayer reflector is particularly introduced into the display backlight module for a LCD display. The multilayer reflector is composed of a plurality of inter-stacked polymer films with various indexes of refraction. With introduction of interference principle, the multilayer reflector is designed to reflect or transmit the light with a specific wavelength range for acquiring a more uniform backlight. According to one of the embodiments, the display backlight module includes a backlight module, such as a direct-type or an edge-type light source. The module further includes the multilayer reflector and an optical-film module. This optical-film module optionally includes a brightness-enhancement film and a diffuser.08-23-2012
20120133862LIGHT DIFFUSER FILM AND LIQUID CRYSTAL DISPLAY PANEL USING THE SAME - The present invention discloses a light diffuser film including a transparent thermoplastic resin, the light diffuser film having an embossed pattern on at least one side thereof, the embossed pattern having an average roughness (Ra) of about 1.5 μm or less, and a peak count (Rpc) of about 100 peaks/cm or more.05-31-2012
20120212690BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY - A backlight device includes a housing, a light source, a diffuse plate and a fixing member. The housing has an open surface. The light source is arranged in the housing. The diffuser plate is arranged on the open surface of the housing and allows light emitted from the light source to pass therethrough while diffusing the light. The fixing member prevents the diffuser plate from bending in a direction in which light passes through the diffuser plate. A part of the fixing member has transmittance adjusted to substantially equalize luminance distribution of light passed through the diffuser plate.08-23-2012
20090059126Display device - A panel unit is formed by sandwiching a liquid crystal display panel and a diffusion sheet between a front surface plate having a curved plane and a back surface plate having a curved plane. A light source unit is arranged on a back surface of the panel unit. The diffusion sheet is formed in to an outward convex shape in the same manner as the liquid crystal display panel and hence, due to a lens action of the diffusion sheet, light from the light source unit is collected in the direction toward the center of a screen. Accordingly, it is possible to suppress a phenomenon that brightness in a periphery of the screen is reduced when the screen is viewed from a front side.03-05-2009
20090059125Image display apparatus - An image display apparatus includes: a plurality of light sources for emitting light; an optical uniformizing portion for uniformizing light emitted from the plurality of light sources; a total reflection portion disposed above the plurality of light sources, the total reflection portion totally reflecting light from the optical uniformizing portion; an optical guide portion for guiding light totally reflected at the total reflection portion; an optical diffusion unit for diffusing light from the total reflection portion and outputting the diffused light; an optical parallelizing unit for parallelizing light from the optical diffusion unit; and a liquid crystal panel for modulating light from the optical parallelizing unit into an optical image in accordance with an image signal and displaying the optical image.03-05-2009
20090059124Backlight unit and liquid crystal display device including the same - A backlight unit for a liquid crystal display device includes a reflection sheet, at least one lamp arranged over the reflection sheet, a diffuser plate over the at least one lamp, the diffuser plate including a base plate of a transparent material, a diffusion layer at a first surface of the base plate facing the at least one lamp, and a light concentrating layer at a second surface of the base plate opposite to the first surface and formed of a same material as the base plate, and optical sheets over the diffuser plate.03-05-2009
20090059123PLANE LIGHT SOURCE AND LCD BACKLIGHT UNIT HAVING THE SAME - There are provided a plane light source and an LCD backlight unit having the same. A plane light source including light emitting device matrixes each having a plurality of light emitting devices arranged in rows and columns on a substrate according to an aspect of the invention includes: a first matrix having a plurality of light emitting devices arranged in rows and columns; and a second matrix having a plurality of light emitting devices arranged in rows and columns, the light emitting devices each located within a rectangle formed by four adjacent light emitting devices included in the first matrix, and forming angles θ satisfying the condition of 45°≦θ≦55° therebetween on the basis of a horizontal direction, wherein among pitches between one light emitting devices included in the light emitting device matrixes and another lighting light emitting device adjacent to the light emitting device, a pitch P03-05-2009
20090059122SURFACE EMITTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A surface emitting device includes a plurality of light sources disposed on an identical plane, an optical element having translucent properties and having formed thereon a luminance distribution-forming layer for suppressing luminance variations of light emitted from the plurality of light sources. A reflective surface is provided. for reflecting a light emitted from the plurality of light sources, the reflective surface being disposed opposite to the optical element by sandwiching the plurality of light sources with an air layer in between the reflective surface and the optical element. A diffuser for diffusing the light emitted from the plurality of light sources is disposed opposite to the plurality of light sources by sandwiching the optical element.03-05-2009
20100026932LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device including: a light source; a polarizing film of light source side; a liquid crystal cell; and a polarizing film of display side is provided, the liquid crystal display device further comprising: an optical compensatory sheet disposed between the liquid crystal cell and the polarizing film of the light source side or between the liquid crystal cell and the polarizing film of the display side; and a light-scattering sheet disposed at an outermost surface of the polarizing film of display side, wherein luminance in a normal direction with respect to the liquid crystal display device in a black display state without the light-scattering sheet is 0.3 cd/m02-04-2010
20100302479OPTICAL ARTICLE - The invention provides optical articles (12-02-2010
20120224121High Dynamic Range Displays Using Filterless LCD(s) For Increasing Contrast And Resolution - A display provides increased contrast and resolution via first LCD panel energized to generate an image and a second LCD panel configured to increase contrast of the image. The second panel is an LCD panel without color filters and is configured to increase contrast by decreasing black levels of dark portions of images using polarization rotation and filtration. The second LCD panel may have higher resolution than the first LCD panel. A half wave plate and/or film is placed in between the first and the second panel. The panels may be directly illuminated or edge lit, and may be globally or locally dimmed lights that may also include individual control of color intensities for each image or frame displayed.09-06-2012
20120257142PHOTOCONDUCTIVE SWITCHING ELEMENT, PHOTOCONDUCTIVE SWITCHING ELEMENT ARRAY, DISPLAY DEVICE, AND IMAGE FORMING APPARATUS - A photoconductive switching element includes a first electrode, a second electrode that is arranged so as to face the first electrode, and a photoconductive layer that is arranged between the first electrode and the second electrode and realizes conductivity by receiving light. The photoconductive layer includes a first electric charge generating layer and a second electric charge generating layer that generate electric charge when light is received and an electric charge transport layer which is brought into contact with the first electric charge generating layer and the second electric charge generating layer and to which the electric charge can be moved. The first electric charge generating layer and the second electric charge generating layer are arranged at mutually-different positions in a direction perpendicular to a thickness direction of the electric charge transport layer and at mutually-different positions in the thickness direction of the electric charge transport layer.10-11-2012
20120257143DIFFUSER FOR LIGHT FROM LIGHT SOURCE ARRAY AND DISPLAYS INCORPORATING SAME - An optical structure placeable between a backlight array of point light sources and a planar display. The structure distributes light emitted by the point light sources to uniformly illuminate the plane of the display, without introducing significant viewing parallax. The emitted light is partially collimated within a preferred angular viewing range, maximizing the display's luminance when viewed from the normal direction. The structure is highly reflective, such that a substantial portion of any non-emitted light rays are internally reflected by the structure, increasing the likelihood that those rays will be subsequently emitted by the structure.10-11-2012
20090021667Resin Sheet, Direct Backlight Unit, and Direct Backlight Type Liquid Crystal Display - There is provided a resin sheet having a thickness of 1 to 5 mm,01-22-2009
20120262646POLARIZING DIFFUSER FILM, METHOD OF MANUFACTURING POLARIZING DIFFUSER FILM, AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING POLARIZING DIFFUSER FILM - Disclosed are a film with excellent polarization selectivity and excellent diffusion properties, and a means for easily producing the same. The polarizing diffusion film has an intrinsic birefringence of at least 0.1 and substantially comprises one type of crystalline resin; and in the polarizing diffusion film, the total light transmittance is 50 to 90% in relation to visible light, the transmission haze is 15 to 90% in relation to visible light, and the degree of transmission polarization is 20 to 90% in relation to visible light.10-18-2012
20120262645Backlight Module and Liquid Crystal Display Employing Same - An exemplary backlight module includes two light guide plates, two first light sources, a diffusing plate, and a second light source. The two light guide plates are arranged apart from each other, and each of the light guide plates includes a first side surface and a second side surface. The first side surface is adjacent to the other light guide plate. The second side surface is opposite to the first side surface and is away from the other light guide plate. The two first light sources are arranged adjacent to the second side surfaces of the two light guide plates, respectively, and provide first light beams for the two light guide plates, respectively. The diffusing plate is arranged between the first side surfaces of the two light guide plates. The second light source is arranged below the diffusing plate and provides second light beams for the diffusing plate.10-18-2012
20120081635Light diffusing film, polarizing plate, liquid crystal display device and production method of light diffusing film - A light diffusing film contains a thermoplastic resin as the main component and contains, in the thermoplastic resin, at least one kind of a light-transmitting particle having an average primary particle diameter of 3 to 10 μm, wherein the absolute value of the refractive index difference between the thermoplastic resin and the light-transmitting particle is from 0.01 to 0.06, wherein one surface has concavoconvex shape, the total haze value is from 15 to 30%, the internal haze value is from 5 to 25%, the surface haze value is from 5 to 20%, and the average film thickness is from 20 to 200 μm.04-05-2012
20120229730LIQUID CRYSTAL DISPLAY - Disclosed is a liquid crystal display including: a liquid crystal panel; and a backlight unit disposed below the liquid crystal panel and irradiating light to the liquid crystal panel, in which the backlight unit includes a reflective layer increasing an amount of light irradiated to the liquid crystal panel.09-13-2012
20090015752Method for illuminating liquid crystal display device, a back-light assembly for performing the same, and a liquid crystal display device using the same - A method for illuminating a liquid crystal display device, a back-light assembly for performing the same and a liquid crystal display device using the same can improve the front luminance and production yield. Lights from a lamp is incident to a LCD panel side, which are then primarily diffused for a uniformity of the luminous flux of the incident lights. The luminous flux of the primarily diffused lights is condensed with respect to a first orientation component on a plane in parallel with the LCD panel, and then partially and secondarily diffused for extending a view angle of pixels of the LCD panel. After the luminous flux of the secondarily diffused lights is condensed with respect to a second orientation component perpendicular to the first orientation on the parallel plane, the condensed lights are illuminated onto the LCD panel. A diffusion sheet for secondarily diffusing the luminous flux and a condensing sheet for condensing the second orientation component are formed by a single sheet to reduce the manufacturing process of the liquid crystal display device. Also, a defect produced from respective sheets is minimized to enhance the yield.01-15-2009
20110037926LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND COLOR CONVERSION SHEET - There is provided is a display device capable of suppressing deterioration of the color conversion layer which converts one color light into another color light, and realizing favorable handling and a display device using the color conversion layer, and a color conversion sheet. A phosphor sheet 02-17-2011
20110037925OPTICAL SHEET FOR CONTROLLING THE DIRECTION OF A LIGHT RAY - The present disclosure relates to an optical sheet for controlling the direction of light rays which is used for manufacturing backlight units of TFT-LCDs for computer monitors and televisions, and more specifically to an optical sheet which can uniformly diffuse light, improve brightness, and adjust viewing angle. There is provided an optical sheet for controlling the direction of light rays comprising a substrate film; a microlens group arranged on a first face of the substrate film; and a plurality of protuberances formed on a second face of the substrate film, wherein each protuberance comprises a reflective layer at the bottom thereof, and the plurality of protuberances comprise an aperture formed therebetween, and wherein a unit microlens of the microlens group has a first side and a second side with different radii of curvature from each other with respect to a light emission control part thereof.02-17-2011
20100328580LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a liquid crystal display (LCD) device capable of enhancing brightness uniformity by preventing light leakage. The LCD device comprises an LC panel; an optical source for providing light to the LC panel; a light guide plate coupled to a light emission surface of the optical source; a light emitting diode (LED) printed circuit board (PCB) disposed on the light guide plate and the optical source; an optical sheet disposed on the light guide plate, and having a diffusion plate and a prism sheet on an upper surface of one side corresponding to the LED PCB, the diffusion plate having a light shielding member attached thereto; and a mold frame for accommodating therein the optical source, the light guide plate, and the optical sheet.12-30-2010
20100328579OPTICAL ELEMENT, AND BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - An optical element capable of improving a light diffusion effect while minimizing a damage of other members in the LCD due to an impact and so on, and a backlight unit and an LCD including the same. The optical element includes an optically-transparent base member; and a light-diffusing resin layer formed on one side of the base member. The light-diffusing resin layer has a plurality of concave recesses formed in a surface thereof to diffuse light. The optical element further includes an optical micro-structural layer formed on the opposite side of the base member. The second light-diffusing resin layer has a plurality of concave recesses formed in a surface thereof to diffuse light.12-30-2010
20100328578PASSIVE AND HYBRID DAYLIGHT-COUPLED N-STACK AND COLLAPSIBLE BACKLIGHTS FOR SUNLIGHT VIEWABLE DISPLAYS - A passive daylight-coupled display having an LCD panel, a diffuser, and a curved reflector behind the LCD panel. For passive backlighting, the diffuser transmits daylight to the reflector, which reflects the daylight to the LCD panel and provides for substantially uniform distribution of the daylight on the LCD panel for backlighting it. An N-stack daylight-coupled display includes a plurality of passive backlights cascaded in a stack for backlighting of LCD panels or static display panels. One N-stack display can include an active light source to provide light to the reflectors, and a secondary light source to provide light to at least one of the reflectors to provide backlighting of the display in low lighting conditions. A collapsible daylight-coupled display includes a daylight-coupled backlight that is collapsible when not in use for hand-held or portable display devices.12-30-2010
20080297692Image Display Apparatus and Backlight Unit to Be Used Therein - An image display apparatus includes a backlight unit including a plurality of light sources arranged in a flat, a reflecting portion for reflecting light from the light sources, a diffuser for diffusing the light from the light sources and the light reflected from the reflecting portion, and a chassis for maintaining or supporting the light sources, the reflecting portion and the diffuser; and a liquid crystal display unit which receives the light diffused by the diffuser of the backlight unit. Concave portions are formed in the chassis at positions corresponding to electrodes of the plurality of light sources, positions corresponding to light-emitting portions of the light sources are arranged in a flat, and a circuit for driving the liquid crystal display unit is provided on a rear surface of a planar portion of the chassis. Accordingly, it is possible to realize a thin lightweight backlight with high luminance and high luminance uniformity.12-04-2008
20080297691BACK LIGHT UNIT AND LIQUID CRYSTAL DISPLAY WITH THE SAME - A back light unit for a liquid crystal display panel including a light source, a light guide plate for receiving light from the light source, a lower surface of the light guide plate coated with a reflection sheet, wherein the reflection sheet may be metal, a diffuser for diffusing the light from the light guide plate, and an optical sheet for providing the light from the diffuser to the liquid crystal display panel.12-04-2008
20120320309LIGHT EMITTING MODULE, SURFACE LIGHT SOURCE, LIQUID CRYSTAL DISPLAY, AND ILLUMINATING DEVICE - The purpose of the present invention is providing a light emitting module capable of emitting illumination light having a nearly uniform color tone as a whole. The invention also provides a surface light source having such light emitting modules, and a liquid crystal display and an illuminating device having such a surface light source.12-20-2012
20120320310LIGHTING DEVICE, DISPLAY DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A lighting device includes a light source 12-20-2012
20100231826LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device with a backlight including a light guide plate. The light guide plate includes, a reflective polarizing plate for transmitting a P-polarized component and reflecting an S-polarized component, a reflector for reflecting the S-polarized component reflected by the reflective polarizing plate, and a polarization converting member for converting the S-polarized component to a P-polarized component. The reflective polarizing plate and the reflector are tilted at an angle such that reflecting surfaces thereof are not perpendicular to four sides of the liquid crystal display panel and are disposed such that the S-polarized component contained in a main component of light emitted from the light sources is reflected by the reflector. This keeps small the size of the liquid crystal display device and still improves reuse efficiency of the light emitted from the light sources.09-16-2010
20110234942OPTICAL COMPONENT, LIGHTING DEVICE AND DISPLAY DEVICE - One embodiment of the present invention is an optical component, including a first main surface and a second main surface wherein a plurality of two-dimensionally arranged first convex parts are arranged on the first main surface, each of the first convex parts being independent and an aspherical micro lens having an approximate semispherical shape or an approximate elliptic semispherical shape, or having a rounded tip, and a plurality of second convex parts of the height of which is lower than the height of the plurality of the first convex parts, the second convex parts comprising a lens extending in a one dimensional direction, the lens being arranged in one or two directions.09-29-2011
20110234941LIGHT GUIDES - This invention relates to a light guide plate and methods of manufacture. The light guide plate is suitable for use in a range of applications, particularly those which require backlighting for display units, for example, liquid crystal displays. The light guide plate comprises a combination of light guide layers and one or more scattering features.09-29-2011
20110255032Backlight Unit and Liquid Crystal Display Having the Same - A backlight unit for a liquid crystal display which can achieve substantially uniform luminance over the entire display screen includes: a light-guide plate guiding incident light and having a diffusion pattern for emitting light upward, the diffusion pattern being formed on at least one of upper and lower surfaces of the light-guide plate; and a point light source assembly disposed on at least one side portion of the light-guide plate, the point light source assembly including a plurality of point-light-source elements and a support substrate, in which the point-light-source elements are disposed on the support substrate and supply the light to the light-guide plate. An edge portion of one surface of the light-guide plate, which is adjacent to the point light source assembly, includes a first region corresponding to the point-light-source elements and a second region corresponding to a position between the point-light-source elements. The diffusion pattern may be formed in such a manner that the second region has a higher density than the first region.10-20-2011
20120287376Backlight Module and Liquid Crystal Display Device - A backlight module is disclosed in the present disclosure. The backlight module comprises a reflective sheet, a printed circuit board (PCB), a diffuser plate and a supporting structure. The reflective sheet is attached onto the PCB, and the supporting structure is located between the diffuser plate and the reflective sheet. The supporting structure comprises a body portion and a supporting portion, and the PCB comprises an adapter member. By using the adapter member and the supporting structure in the backlight module of the present disclosure, the supporting structure can make contact with the PCB in a large area and support the diffuser plate stably. Further, a liquid crystal display (LCD) device using the backlight module described above is also disclosed in the present disclosure.11-15-2012
20120287375SURFACE LIGHT SOURCE DEVICE, LIQUID CRYSTAL DISPLAY DEVICE, AND LENS - The present invention relates to a surface light source, including a light source section made up of plural light emitting diodes and lenses that expand light from these light emitting diodes. The lens in the light source section has a light incident surface on which light from the light emitting diode is incident with an optical axis at a center, and a light exit surface that expands and emits the incident light. The light incident surface has a continued depressed surface, while the light exit surface has a continued projected surface. The lens performs such that “sag Y” decreases from a maximum value “sag Y11-15-2012
20120140148LIQUID CRYSTAL DISPLAY PANEL, METHOD FOR MANUFACTURING LIQUID CRYSTAL DISPLAY PANEL, AND LIQUID CRYSTAL DISPLAY DEVICE - A wire grid polarizer (WG) has (i) a region where linear conductive wires are regularly repeated at a constant pitch (P) and (ii) a region (A) where linear conductive wires are at a pitch larger than the constant pitch (P). The region (A) where the linear conductive wires are at a pitch larger than the constant pitch (P) and a black matrix (06-07-2012
20130010232LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS COMPRISING THE SAME - According to one embodiment, a lighting device includes a radiation surface, at least one light source provided to face the radiation surface, and an optical control member provided between the radiation surface and the light source and includes optical characteristics of transmission, diffraction, diffusion, and reflection, which vary for regions in the optical control member, a distribution of each of the optical characteristics being determined by positions relative to the at least one light source. The optical control member is formed in a sheet shape which is controlled by at least one of a reflective film having a reflection factor distribution, and a reflective film having a numerical aperture distribution, and lenses.01-10-2013
20130010231Backlight Device and Liquid Crystal Display Apparatus - Provided is a backlight device having: a light source element having light emitting diodes and a lens expanding light from the light emitting diodes; a housing containing the light source element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the light source element, toward the diffuser plate. In the light source element, a plurality of the lenses are arranged at a central zone, the plurality of lenses being arranged in a plurality of rows.01-10-2013
20110157520Liquid Crystal Display and Fabrication Method Thereof - A liquid crystal display and a fabrication method thereof are provided. The liquid crystal display includes a liquid crystal display panel having a plurality of pixels. A backlight module is disposed under the liquid crystal display panel. A lens is disposed between the liquid crystal display panel and the backlight module, having a plurality of optical structures formed on an upper surface and a lower surface thereof. The lens can disperse lights from the backlight module to form a plurality of chromatic light sources, wherein each chromatic light source is composed of colored lights with a continuous spectrum formed from a red light to a violet light and corresponds to each pixel.06-30-2011
20110157518LIGHT SHAPING FILM AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A liquid crystal display device includes a liquid crystal panel; and a backlight unit providing a light to the liquid crystal panel, the backlight unit including: a light source under the liquid crystal panel; and first and second light shaping films between the light source and the liquid crystal panel, the first light shaping films including a first base layer and a plurality of first prism patterns, and the second light shaping films including a second base layer and a plurality of second prism patterns, wherein each of the first and second base layers has a haze, and the plurality of first prism patterns cross the plurality of second prism patterns.06-30-2011
20080225202OPTICAL SHEET AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - Disclosed is an optical sheet and an LCD device comprising the optical sheet. The optical sheet comprises a base film; and a prism part disposed on one surface of the base film, and comprising a plurality of peaks and a plurality of valleys; wherein the prism part comprises a plurality of diffusion particles, and the prism part is arranged along a longitudinal direction and a height of each peak varies as the peak goes along the longitudinal direction.09-18-2008
20130169904BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING SAME - A backlight unit for a liquid crystal display device including an light emitting diode light source; a light conversion layer disposed apart from the light emitting diode light source, wherein the light conversion layer is configured to convert light emitted from the light emitting diode light source to white light and provide the white light to a liquid crystal panel; and a light guide panel disposed between the light emitting diode light source and the light conversion layer, wherein the light conversion layer includes a semiconductor nanocrystal and a polymer matrix, wherein the semiconductor nanocrystal is coated with a first polymer, and wherein the polymer matrix comprises a thermoplastic second polymer.07-04-2013
20080218659WHITE SURFACE LIGHT SOURCE AND LIQUID CRYSTAL DISPLAY - A white surface light source comprising a light diffuser plate and a light source provided on the back side of the light diffuser plate, wherein the light source comprises at lease one LED element which emits lights including a red color, and the light diffuser plate comprises a transparent material and light diffusing particles dispersed in the transparent material, and wherein an absolute value An of a refractive index difference between the transparent material and the light diffusing particles, and a 50% cumulative particle diameter D09-11-2008
20130114021SURFACE LIGHT SOURCE AND LIQUID CRYSTAL DISPLAY DEVICE - A light emitting device including a lens in which light radiated from a light source with a wide angle can effectively be oriented while a directional characteristic of the light source is expanded is provided, and a surface light source including the light emitting devices and a liquid crystal display device are provided. The surface light source is configured such that the plural light emitting devices are disposed in a central portion thereof. The light emitting device radiates the light on an optical axis A and around the optical axis A. The light emitting device includes a light source and a lens that radially expands the light from the light source. The lens includes a reflection unit at a bottom surface of the lens partially.05-09-2013
20130100380BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A backlight unit for a liquid crystal display which can achieve substantially uniform luminance over the entire display screen includes: a light-guide plate guiding incident light and having a diffusion pattern for emitting light upward, the diffusion pattern being formed on at least one of upper and lower surfaces of the light-guide plate; and a point light source assembly disposed on at least one side portion of the light-guide plate, the point light source assembly including a plurality of point-light-source elements and a support substrate, in which the point-light-source elements are disposed on the support substrate and supply the light to the light-guide plate. An edge portion of one surface of the light-guide plate, which is adjacent to the point light source assembly, includes a first region corresponding to the point-light-source elements and a second region corresponding to a position between the point-light-source elements. The diffusion pattern may be formed in such a manner that the second region has a higher density than the first region.04-25-2013
20130114022LIGHT EMITTING DEVICE, SURFACE LIGHT SOURCE, LIQUID CRYSTAL DISPLAY DEVICE, AND LENS - A light emitting device includes plural light emitting diodes and plural lenses each of which expands the light from the light emitting diode. The lens includes an incident surface through which the light from the light emitting diode is entered at an optical axis and around the optical axis, and an output surface from which the incident light is output while radially expanded. The incident surface includes a continuous concave surface, the output surface includes a continuous convex surface, and the lens has different refractive powers in a first direction orthogonal to the optical axis and in a second direction orthogonal to the optical axis and the first direction.05-09-2013
20130128188BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE USING SAID BACKLIGHT UNIT - In the disclosed backlight unit, multiple LEDs are arranged as a light source at prescribed intervals on a substrate in a rectangular ring. Light irradiated from the LEDs is diffused through a lens, a prism plate and a diffusion plate, and is transmitted to a liquid crystal panel. There are roughly V-shaped concavities in the incidence surface of the lens, and triangular cross-section prisms for diffusing incident light are further arranged on the incidence surface of the prism plate. The LEDs are arranged on a highly thermally conductive LED cooling pattern, and the LED cooling pattern is in contact with a heat-dispersion housing. For that reason, heat emitted by the LEDs is conducted from the LED cooling pattern to the housing and dispersed to the ambient air. By this means, the backlight unit can save energy and be more compact.05-23-2013
20100277671Display Device - A cooling device is provided, where an LED backlight can be efficiently cooled in order to suppress display unevenness caused by heat generated from the LED backlight. In addition, a display device including the cooling device is also provided. A display device is provided, where the LED backlight can be cooled by arranging a coolant pipe on a back surface side of the LED backlight and supplying a coolant to a coolant pipe. Further, a display device is provided, where cooling efficiency of the LED backlight can be more improved by arranging a thermal conductor between the LED backlight and the cooling device.11-04-2010
20080211989Backlight Assembly and Display Apparatus Having the Same - A backlight assembly includes: a light emitting unit having a plurality of unit LEDs formed in a matrix, each of the unit LEDs having a red LED, a green LED, and a blue LED; a plurality of bottom reflectors disposed under the respective unit LEDs; and a plurality of side reflectors disposed around the respective unit LEDs.09-04-2008
20110273644OPTICAL FILM AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING SAME - The present invention provides a liquid crystal display device comprising an optical film capable of impeding the occurrence of a failure of display quality at wide view angles, enhancing the front contrast and the transmission image definition, and impeding the occurrence of scintillation. On a substrate film 11-10-2011
20110273643LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a liquid crystal panel; a side-lit backlight that emits light towards the liquid crystal panel through a light guide plate, the backlight further having a reflection layer that reflects light that has passed through the liquid crystal panel and the light guide plate in that order; a first λ/4 plate disposed between a first polarizer and the first substrate, the first λ/4 plate having a retarded phase axis that is at a 45° angle with the transmission axis of the first polarizer; a second λ/4 plate disposed between a second polarizer and the second substrate, the second λ/4 plate having a retarded phase axis that is at 45° with the transmission axis of the second polarizer and that is perpendicular to the retarded phase axis of the first λ/4 plate; and a diffusion layer disposed between the first λ/4 plate and the first substrate.11-10-2011
20080198296LIQUID CRYSTAL DISPLAY DEVICE, BACKLIGHT MODULE AND FABRICATION METHOD THEREOF - The invention provides a liquid crystal display device, backlight module and method for fabricating the same. The backlight module comprises a frame; a plurality of light-emitting diodes disposed on a bottom surface of the frame; and a mixing light plate disposed over the light-emitting diodes. The backlight module further comprises a diffusion plate disposed on the mixing light plate and a reflective layer formed on an inner sidewall and the bottom surface of the frame. The backlight module has a high luminous uniformity and efficiency by the mixing light plate.08-21-2008
20130148057BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - A backlight unit for a liquid crystal display device, the backlight unit including: an light emitting diode (“LED”) light source; a light conversion layer disposed separate from the LED light source to convert light emitted from the LED light source to white light and to provide the white light to the liquid crystal panel; and a light guide panel disposed between the LED light source and the light conversion layer, wherein the light conversion layer includes a semiconductor nanocrystal and a polymer matrix, and wherein the polymer matrix includes a first polymerized polymer of a first monomer including at least two thiol (—SH) groups, each located at a terminal end of the first monomer, and a second monomer including at least two unsaturated carbon-carbon bonds, each located at a terminal end of the second monomer.06-13-2013
20100309411DIFFUSION SHEET AND METHOD OF MANUFACTURING THE SAME, BACKLIGHT, AND LIQUID CRYSTAL DISPLAY DEVICE - A diffusion sheet includes: a substrate having a first principal surface and a second principal surface; and structures each in a convex shape formed randomly on the first principal surface or the second principal surface of the substrate. The structures have an identical or almost identical height. The structures have an aspect ratio h/r, where r denotes an average radius of the structures and h denotes an average height of the structures, of more than 0.85 and not more than 1.50. The structures have a filling factor of not less than 60% and not more than 80%.12-09-2010
20100309410BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight unit adapted to enhance brightness and reduce manufacturing time and costs is disclosed. The backlight unit includes a bottom cover with an opened upper surface, a plurality of light emission diodes arranged on an inner edge of the bottom cover, a light guide plate disposed parallel to the plurality of light emission diodes, and a diffusion sheet disposed on the light guide plate. The diffusion sheet is provided to have an overlapped area with a support main which is combined with the bottom cover. Also, a reflection material layer is formed on an upper surface of the diffusion sheet corresponding to the overlapped area.12-09-2010
20130155351Electronic Device With Backlit Display - An electronic device may have a liquid crystal display with backlight structures. The backlight structures may produce backlight that passes through display layers in the display. The display layers may include color filter elements, a liquid crystal layer, and a thin-film transistor layer. The color filter elements may be interposed between the thin-film transistor layer and the backlight structures or the thin-film transistor layer may be interposed between the color filter elements and the backlight structures. The backlight structures may be formed from optical fiber, a two-dimensional array of light-emitting diodes, a light guide plate that includes a rectangular recess for receiving optical films, or light guide plate structures that include internal light scattering structures. A light guide plate may be provided with alignment features that mate with alignment features on optical films.06-20-2013
20090237595BRIGHTNESS ENHANCEMENT FILM-LAMINATED LIGHT DIFFUSER PLATE AND METHOD FOR PRODUCING THE SAME - The present invention provides a brightness enhancement film-laminated light diffuser plate which can sufficiently prevent scratching, and also can ensure sufficient brightness.09-24-2009
20110310331LIQUID CRYSTAL DISPLAY - A liquid crystal display includes a liquid crystal display panel, a backlight unit providing light to the liquid crystal display panel, a bottom cover receiving the backlight unit, and at least one heat generation sheet disposed between the backlight unit and the bottom cover. The at least one heat generation sheet generates a radiant heat for increasing a surface temperature of the liquid crystal display panel.12-22-2011
20110310330THIN BACKLIGHT SYSTEM AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - According to a conventional backlight device for use in a thin full-color display device in which pixels are subjected to a color separation by colored lights, a large chromatic aberration occurs, thereby causing a deterioration in image quality. A thin backlight system in accordance with the present invention includes: a light emitting section (12-22-2011
20120026427IMAGE DISPLAY APPARATUS AND METHOD OF ASSEMBLING THE SAME - In an image display apparatus, the diffusing plate includes a rectangular plate body section and diffusing plate projecting sections that project to an outside in parallel with a main surface of the body section. The diffusing plate projecting sections are provided at all perimeter sections that form four sides of a rectangular shape when the body section is viewed from a thickness direction Z thereof. Optical sheets have sheet projecting sections provided at perimeter sections that form two sides parallel to each other among four sides that are rectangular when the sheet body section is viewed from the thickness direction Z. At this time, one optical sheet has sheet projecting sections provided at perimeter sections that form two long sides of the sheet body section. The other optical sheet has sheet projecting sections provided at perimeter section that forms two short sides of the sheet body section.02-02-2012
20130201424BACKLIGHT SYSTEM AND LCD DEVICE USING THE SAME - A backlight system (08-08-2013
20130201425BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS - Provided is a backlight device having: a light source element having LEDs and a lens expanding light from the LEDs; a housing containing the element; a diffuser plate covering an opening portion of the housing; and a reflection sheet reflecting light emitted from the element, toward the diffuser plate. The LEDs are arranged in one or more rows, at a central zone. The lens has an incident surface receiving light from the LEDs, and an exit surface from which the light goes out, being expanded. A plurality of the lenses are provided such that the arrangement intervals of the individual lenses at a center and edge regions of the light source element are narrow and dense, and the arrangement intervals of the individual lenses at intervening regions between the center and the edge regions are wide in comparison with those at the center and the edge regions.08-08-2013

Patent applications in class Diffuser between light source and liquid crystal