Patent application number | Description | Published |
20080259252 | LIQUID CRYSTAL DISPLAY DEVICE - An illumination device using a plurality of LED light sources each of which is driven by a single power supply is provided to attain simple operational response and voltage control. | 10-23-2008 |
20080303977 | Liquid 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 |
20080309858 | LIQUID CRYSTAL DISPLAY DEVICE - To reduce an oblique luminance disturbance and color deterioration in a liquid crystal display device of the IPS mode. | 12-18-2008 |
20090059121 | Illumination 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 |
20090059156 | Liguid-Crystal Display Device - Disclosed herein is a liquid-crystal display device capable of reducing leakage of light under a black state due to scattering from a liquid-crystal layer, and having high-contrast ratio, excellent image quality performance. The liquid-crystal display device comprises: a liquid-crystal panel including one pair of polarizers disposed on one pair of substrates, a liquid-crystal layer held in sandwiched form between the pair of substrates, and a group of electrodes formed on at least one of the pair of substrates for applying an electric field to the liquid-crystal layer; and a light source unit disposed outside the pair of substrates. The liquid-crystal layer includes a liquid-crystal material having an ordinary-light refractive index of at least 1.46, but up to 1.49, an extraordinary-light refractive index of at least 1.54, but up to 1.59, and a mean photoelastic constant of at least 8, but up to 25, and exhibiting a nematic phase. | 03-05-2009 |
20090066874 | LIQUID CRYSTAL DISPLAY APPARATUS - In a liquid crystal apparatus in which a white light of a fluorescent tube corresponding to a linear light source repeats plural times of diffusions and reflections between a reflection sheet and a diffusion plate, and is thereafter input as a back light to a liquid crystal panel corresponding to a display screen, an object of the invention is to make it possible to secure a brightness uniformity even if the liquid crystal apparatus is thinned. It is possible to prevent a brightness unevenness caused by a short distance from the reflection sheet to the diffusion plate, by preventing a deformation (a deformation which is convex toward the fluorescent tube) of the diffusion plate due to a thermal expansion of the diffusion plate caused by a heat generation of the fluorescent tube, by arranging at least one pin mold hold so as to support a portion near an approximately center of the diffusion plate. | 03-12-2009 |
20090096951 | Liquid Crystal Display Device - An object is to provide a liquid crystal display device having a thin structure with a backlight device appropriate for illuminating a liquid crystal panel where there is no area in band form where the brightness is inconsistent. | 04-16-2009 |
20090096955 | Liquid 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 |
20090096957 | Liquid Crystal Display Device - To provide a liquid crystal display device having excellent uniformity in the brightness so that the performance of displays of liquid crystal can be increased. | 04-16-2009 |
20090135346 | Liguid Crystal Display Device - There is provided a liquid-crystal-layer | 05-28-2009 |
20090141220 | Liquid Crystal Display - A liquid crystal display includes a pair of substrates having a polarizer, a liquid crystal layer sandwiched between the substrates of the pair, a color filter layer sandwiched between one of the substrates of the pair and the liquid crystal layer, a light source for supplying light to the pair of substrates, the liquid crystal layer, and the color filter layer. The color filter layer includes three filters for displaying blue, green and red. The green filter of the three filters selectively includes an absorbing component capable of absorbing a light spectrum within a wavelength range from 400 nm to 500 nm. | 06-04-2009 |
20090167990 | Liquid Crystal Display Appliance - An object of the present invention is to provide a liquid crystal display appliance for controlling a plurality of divided area in the display screen. In order to achieve the above object, the liquid crystal display appliance according to the present invention includes a lighting apparatus which includes a light source, and an light guide plate to diffuse lights from the light source to obtain a surface light source; and a liquid crystal panel which is placed opposed to the lighting apparatus and includes a liquid crystal layer. The light guide plate is made by bonding a plurality of transparent light guide members each of which has a different refractive index greater than 1. | 07-02-2009 |
20100066943 | BACK LIGHT DEVICE, LIQUID CRYSTAL DISPLAY APPARATUS AND IMAGE DISPLAY APPARATUS USING THE SAME - The liquid crystal display apparatus includes a liquid crystal panel and the back light device for emitting the light from a light source to the liquid crystal panel through a lens. The light source includes a first LED for emitting the light of a first color, a second LED for emitting the light of a second color, a third LED for emitting the light of a third color, a fourth LED for emitting the light of the third color, a fifth LED for emitting the light of the second color, and a sixth LED for emitting the light of the first color. The first, second, third, fourth, fifth and sixth LEDs are arranged on the wiring board in such a manner as to offset the deviation of the light distribution. | 03-18-2010 |
20100066949 | LIQUID CRYSTAL DISPLAY APPARATUS - Provided is a liquid crystal display apparatus including: a liquid crystal panel including a pair of substrates; a liquid crystal layer sandwiched by the pair of substrates; plural electrodes formed on at least one of the pair of substrates; and a pair of polarizers provided in respective outsides of the pair of substrates; and a back light unit provided in a rear of the liquid crystal panel, in which one of the pair of polarizers, which is provided at a side of the back light unit, includes at least two types of layers which cause polarization, and in which the two types of layers include a first layer provided on a side of the liquid crystal layer and a second layer provided on a side of the back light unit, the first layer being a negative uniaxial polarizer layer, the second layer being a positive uniaxial polarizer layer. | 03-18-2010 |
20100165246 | Illuminating Device And Liquid-Crystal Display Device Using The Same - An illuminating device capable of being produced at low costs and irradiating rays of light uniformly to a liquid crystal panel. The illuminating device has a plurality of LED packages each having LED's and a lens, the LED packages being congregated on a plane in a large area. Each of the LED packages includes at least four LED's corresponding to LED's for emitting at least red, green and blue, and at least two of the LED's in each LED package are positioned symmetrically to the center of the lens and emit the same color. | 07-01-2010 |
20100165249 | Liquid 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 |
20100165250 | Liquid 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 |
20100245726 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device comprising a liquid crystal panel having a cell | 09-30-2010 |
20100271575 | LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device including: a substrate ( | 10-28-2010 |
20100321607 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes: a liquid crystal layer which contains a liquid crystal composition; a pair of substrates opposed to each other across the liquid crystal layer; alignment layers placed on liquid crystal layer sides of the pair of substrates, respectively; and polarization plates placed on opposite sides from the liquid crystal layer sides, respectively. The pair of substrates includes a thin-film transistor substrate including a thin-film transistor for controlling molecule alignment of the liquid crystal composition, and a color filter substrate including a color layer containing pixels of different colors. A blue pixel, which is one of the pixels of different colors, is larger in area than any of the pixels of other colors. A loss of light in a short-wavelength range is thus reduced. | 12-23-2010 |
20110116023 | POLARIZER AND LIQUID-CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus includes a first polarizer located on one side of a first substrate, a second polarizer located on the opposite side of a second substrate, a liquid crystal layer formed of liquid crystal molecules and between the first and the second substrates so that the liquid crystal molecules may be aligned in parallel to the first or the second substrate and to which an electric field is applied in parallel to the first substrate, and a lighting device. The first or the second polarizer includes a polarization layer and supporting materials located on both sides of the polarization layer, reducing light leakage and a colour shift in a black display state when viewed from the oblique direction. | 05-19-2011 |
20110176086 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes: a light guide plate | 07-21-2011 |
20110181809 | LIQUID CRYSTAL DISPLAY DEVICE AND ILLUMINATING DEVICE - The side surface of the light guide plate includes an incident surface which faces the light source unit in an opposed manner, and a fixing surface which is directed in the left-and-right direction orthogonal to the top-and-bottom direction which is the direction along which the light source unit and the incident surface each other in an opposed manner. An engaging portion which is engageable with a lower frame is formed on the fixing surface or an edge portion which forms the fixing surface. The engaging portion is configured to allow a change of a distance between the incident surface and the lower frame due to expansion or shrinkage of the light guide plate while restricting the movement of the light guide plate in the top-and-bottom direction. | 07-28-2011 |
20110187953 | LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display device, the reduction of power consumption is realized by reddening a backlight while maintaining a white balance. An aperture ratio of a red subpixel and an aperture ratio of a blue subpixel are set such that, in a state where an aperture ratio of a green subpixel in each pixel of a liquid crystal panel is fixed to a desired value, white brightness efficiency takes a maximum value which is set based on a balance between light emission efficiency which is increased corresponding to lowering of a color temperature of the backlight and transmissivity of the pixel which is decreased corresponding to the increase of the aperture ratio of the blue subpixel. | 08-04-2011 |
20110267559 | Illuminating Device And Liquid-Crystal Display Device Using The Same - An illuminating device capable of being produced at low costs and irradiating rays of light uniformly to a liquid crystal panel. The illuminating device has a plurality of LED packages each having LED's and a lens, the LED packages being congregated on a plane in a large area. Each of the LED packages includes at least four LED's corresponding to LED's for emitting at least red, green and blue, and at least two of the LED's in each LED package are positioned symmetrically to the center of the lens and emit the same color. | 11-03-2011 |
20110273637 | LIQUID CRYSTAL PANEL AND LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display device, in which a pretilt angle of liquid crystal molecules in a liquid crystal layer ( | 11-10-2011 |
20120044442 | Liquid Crystal Display Device - A liquid crystal display device includes first and second substrates with first and second polarizing layers, a liquid-crystal layer, a matrix-driven electrode group; and a rear-illuminating device. Between the first polarizing layer and the liquid-crystal layer, a first optical compensating member is disposed without a birefringent medium sandwiched between the liquid-crystal layer and the first optical compensating member, and the first optical compensating member is constructed so that when a refractive index thereof in a slow-axis direction in a plane parallel to the substrate is taken as n | 02-23-2012 |