Patent application number | Description | Published |
20080238839 | BACKLIGHT ASSEMBLY, DISPLAY DEVICE HAVING THE SAME AND METHOD OF DRIVING THE SAME - A backlight assembly includes a plurality of line light source sections and a light source driving section. The line light source sections include a plurality of point light sources disposed along a first direction, and are disposed along a second direction substantially perpendicular to the first direction. The light source driving section controls each of the line light source sections to individually drive the point light sources. The light source driving section controls the line light source sections so that at least one of the line light source sections is sequentially driven along the second direction. Thus, the point light sources are individually activated within a required area, and are sequentially activated by at least every one line along the second direction, so that power consumption for driving the backlight assembly may be decreased. | 10-02-2008 |
20080259240 | REFLECTOR MEMBER, BACKLIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME - In a backlight assembly, a reflector member includes a base sheet reflecting a light and a connecting line disposed on a face of the base sheet and, and transmitting signals. An input pad is disposed at a first end portion of the connecting line and receives the signals, and an output pad is disposed at a second end portion of the connecting line and outputs the signals transmitted through the connecting line. | 10-23-2008 |
20090108761 | TIMING CONTROLLER, LIQUID CRYSTAL DISPLAY COMPRISING THE SAME AND DRIVING METHOD OF LIQUID CRYSTAL DISPLAY - A timing controller, a liquid crystal display (LCD) comprising the same and a driving method of the liquid crystal display, in which the LCD includes an LCD panel, a light source unit divided into n light-emitting blocks providing light to the LCD panel, a side member reflecting the light emitted from the light source unit, a timing controller determining a final brightness of each of the n light-emitting blocks and providing final light data corresponding to the final brightness, the final brightness being determined using reflected brightness based on the light reflected from the side member, and a backlight driver controlling the brightness of each of the n light-emitting blocks in response to the final light data. | 04-30-2009 |
20090185393 | LIGHT SOURCE MODULE, METHOD OF FABRICATING THE SAME, AND DISPLAY DEVICE HAVING THE LIGHT SOURCE MODULE - A light source module includes a mounting substrate including at least two exposed metal lines, a light-emitting diode (LED) including two electrodes disposed corresponding to the at least two exposed metal lines, and an anisotropic conductive film (ACF) provided on the mounting substrate, the ACF electrically connecting the at least two exposed metal lines to the two electrodes, wherein the ACF comprises an insulation body, and a plurality of conductive particles dispersed in the insulation body and insulated from each other, and an insulation of the conductive particles disposed between the two exposed metal lines and the two electrodes of the LED is prevented in at least a first direction. | 07-23-2009 |
20090243982 | Backlight unit assembly, liquid crystal display having the same, and dimming method thereof - A backlight unit assembly, a liquid crystal display having the same, and a dimming method thereof are provided. The dimming method for a liquid crystal display includes setting a plurality of lookup tables, each lookup table having different data for adjusting luminance corresponding to a same grayscale, calculating a grayscale average of a whole liquid crystal display panel and grayscale averages of individual liquid crystal display panel blocks with respect to an image signal input to the liquid crystal display panel, selecting one of the plurality of lookup tables in accordance with the whole grayscale average, and calculating the data for obtaining the luminance corresponding to the individual grayscale averages in the selected lookup table, and adjusting and applying power to a light emitting diode assembly using the calculated data. In the case of displaying an image, which is dark on the whole and only a part of which is bright, power is applied with a wider pulse width at the same grayscale, and thus the image can be displayed with a desired luminance to minimize image distortion. | 10-01-2009 |
20090316389 | LIGHT SOURCE MODULE, METHOD OF MANUFACTURING THE SAME AND BACKLIGHT ASSEMBLY HAVING THE SAME - In accordance with one or more embodiments of the present invention, a light source module includes a light source, a frame plate, and an insulation structure. The frame plate includes a plurality of light source pad portions, a power wiring portion, and a peripheral portion. The power wiring portion is electrically connected to the light source to be formed in the vicinity of the light source pad portion. A boundary area of the power wiring portion corresponding to the peripheral portion and the light source pad portion is formed to be open, so that the power wiring portion is spaced apart from the peripheral portion and the light source pad portion. The insulation structure is formed in the boundary area to electrically insulate the power wiring portion from the frame plate. In one aspect, the volume, weight, and manufacturing costs of the light source module may be reduced, and a process of individually packaging light sources may be considered unnecessary. | 12-24-2009 |
20100052564 | BACKLIGHT ASSEMBLY AND METHOD OF DRIVING THE SAME - A backlighting assembly for an LCD display is divided into a plurality of selective dimming areas each having a respective plurality of light generating blocks. A plurality of driving units supply power to the light generating blocks. The light generating blocks are grouped into light source groups. Each of the driving units supplies power to at least one light generating block in a first light source group and a second light generating block in a second light source group but not to all the light generating blocks in any one light source group. Light generating blocks connected to a same driving unit may be distributedly arranged to be nonadjacent to one another. Plural driving units are used to fully power a brightly lit one dimming area, thereby reducing the loads on the individual driving units and preventing overheating. | 03-04-2010 |
20100079977 | BACKLIGHT ASSEMBLY - A backlight assembly includes a light source assembly including a plurality of light source blocks arranged in a first direction, each light source block including a substrate including a reflecting surface and a plurality of point light sources arranged on the substrate, a lower housing accommodating the light source assembly, and a substrate fixing portion disposed at a boundary between adjacent substrates and fixing the light source assembly to the lower housing. The substrate fixing portion includes a head extending overlapping the boundary between the adjacent substrates of the light source blocks and pressing the substrates towards the lower housing, and an engaging protrusion protruding from the head and fixed to the lower housing. | 04-01-2010 |
20100123401 | Method of Driving A Light Source, Light Source Apparatus for Performing the Method and Display Apparatus Having the Light Source Apparatus - A method of driving a light source of a light source module including a red light source, a green light source and a blue light source, includes sensing a luminous intensity of the environment; and adjusting a wavelength of light generated from the light source module according to the luminous intensity of the environment. | 05-20-2010 |
20100171690 | METHOD FOR DRIVING A LIGHT SOURCE AND LIGHT SOURCE APPARATUS FOR PERFORMING THE METHOD - A light source apparatus includes light-emitting blocks, a local dimming control part and a light source driving part driving. The light-emitting blocks include a first-color light source which emits first-color light and a second-color light source which emits second-color light. The second-color light source includes a third-color chip and a fourth-color phosphor disposed on the third-color chip, and is disposed as one package to emit the second-color light therefrom. The local dimming control part compensates a driving current of the first-color light source and a driving current of the second-color light source of each of the light-emitting blocks. The light source driving part drives the first-color light source and the second-color light sources based on the driving current of the first-color light source and the a driving current of the second-color light source, respectively, each compensated by the local dimming control part. | 07-08-2010 |
20100246209 | DISPLAY DEVICE - Provided is a display device for an embodiment in which a central axis of a light guide plate (LGP) and a central axis of one or more light sources are matched with each other to maximize efficiency of the light sources, and which has an ultra-slim structure. The display device may include: a display panel which displays an image; an LGP which guides light to the display panel; light sources which are disposed on a side of the LGP and provide light to the LGP; a circuit board which is disposed on a side of the display panel with the light sources mounted on a surface thereof, and driving chips which drive the display panel mounted on an opposite surface thereof; and a frame which houses the LGP and the light sources and on which the circuit board and the display panel are mounted. | 09-30-2010 |
20110012521 | Backlight Unit With Controlled Power Consumption And Display Apparatus Having The Same - In a display apparatus having a backlight unit, a light unit includes plural light source strings commonly connected to an output terminal of a boosting circuit to generate light in response to a light source driving voltage. The light source strings are grouped into plural light generating groups. Plural driving circuits are respectively connected to the light generating groups, and each driving circuit sequentially outputs feedback voltages from the light source strings of a corresponding light generating group. A minimum voltage detecting circuit compares the feedback voltages with each other from the driving circuits to detect a minimum voltage and outputs a control signal according to the detected minimum voltage. A voltage control circuit controls a voltage level of the light source driving voltage in response to the control signal. Accordingly, although the number of the driving circuits increases, power consumption used in each driving circuit may be reduced. | 01-20-2011 |
20110157916 | LIGHT EMITTING DEVICE AND DISPLAY DEVICE HAVING THE SAME - A display device includes a display panel and a light emitting device to supply light to the display panel. The light emitting device includes a light emitting element emitting a first light and a fluorescent layer receiving the first light, transmitting a portion of the first light, converting a remaining portion of the first light to a second light having a wavelength range different from the first light, and emitting the second light. The second light emitted by the fluorescent layer has a full width at half maximum equal to or larger than 110 nanometers (nm) and a light emission spectrum having a peak wavelength within a wavelength range of about 530 nm to about 560 nm. The second light has a light emission intensity corresponding to 10 to 30 percent of a peak light emission intensity of the first light. | 06-30-2011 |
20110249469 | LIGHT SOURCE UNIT AND BACKLIGHT ASSEMBLY HAVING THE SAME - Provided are a light source unit including a plurality of light-emitting diode (LED) packages, which are directly electrically connected to each other, and a backlight assembly having the light source unit. The light source unit includes a first LED package and a second LED package which are adjacent to each other, wherein each of the first LED package and the second LED package includes an LED chip, a lead frame which supplies current to the LED chip, and a housing which fixes the LED chip and the lead frame in place, wherein an end of the lead frame of the first LED package directly contacts an end of the lead frame of the second LED package. | 10-13-2011 |
20110280045 | Light Emitting Diode Package and Display Apparatus Having the Same - A display apparatus includes a display panel, at least one light emitting diode package, and at least one light guide plate. The light emitting diode package includes a frame extending in a first direction, a plurality of branches branched from the frame in a second direction, and at least two light emitting diode chips inserted between and coupled with two adjacent branches. | 11-17-2011 |
20120081412 | DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes a display panel, a backlight unit, a backlight control circuit, sensors, a read-out circuit and a sensor auxiliary circuit. The display panel includes pixels and displays an image. The backlight unit includes a first light source which emits a first light in a infrared light range. The backlight control circuit controls a brightness of the first light source. The sensors sense an external signal and outputs first sensing signals. The read-out circuit outputs the first sensing signals as second sensing signals. The sensor auxiliary circuit compares a maximum value and a minimum value of the second sensing signals and provides a brightness control signal to the backlight control circuit based on the compared difference to control the brightness of the first light source. | 04-05-2012 |
20130021818 | BACKLIGHT UNITS AND DISPLAY DEVICES INCLUDING THE SAME - A display device includes a display panel which displays an image, a backlight unit which supplies the display panel with light, an upper cover, and a lower cover. The upper and lower covers accommodate the display panel and the backlight unit. The backlight unit includes light guide plates spaced apart from each other, a light source part, an optical member and an optical diffusion member overlapping a space between the light guide plates. The optical diffusion member includes a diffusing part and a supporting part. The diffusing part faces the optical member, overlaps the space between the light guide plates, and diffuses light emitted from the light source part toward the optical member through the space between the light guide plates. The supporting part protrudes from a surface of the diffusing part which is opposite to the optical member, and is in a space between the light sources. | 01-24-2013 |
20130033892 | LIGHT EMITTING UNIT, BACKLIGHT ASSEMBLY INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME - A light emitting unit may include a housing having a bottom portion parallel to an xz plane and an opened top opposite to the bottom portion, a light emitting chip on the bottom portion and generating light, and a lens which overlaps the opened top of the housing. The lens may have a convex structure with respect to the xz plane when viewed from a cross section parallel to an xy plane and a concave structure with respect to the xz plane when viewed from a cross section parallel to a yz plane. | 02-07-2013 |
20130077348 | LIGHT MODULE AND BACKLIGHT ASSEMBLY INCLUDING THE SAME - A light module for a backlight assembly that prevents metal wiring from being damaged at a bent portion and a backlight assembly including the same are presented. The light module for the backlight assembly includes: a printed circuit board (PCB) including a first portion and a second portion connected by a connection having a bend; a first light source formed on the first portion of the printed circuit board (PCB); a second light source formed on the second portion of the printed circuit board (PCB); a first wiring connecting member connected to the first light source and formed on the first portion; and a second wiring connecting member connected to the second light source and formed on the second portion, wherein the first wiring connecting member and the second wiring connecting member are connected to each other. | 03-28-2013 |
20130148333 | LENS, BACKLIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME - A lens includes an upper flat surface having a first outer diameter, a bottom surface having a second outer diameter and a third inner diameter, an external curved surface which connects the upper flat surface and the bottom surface, and an inner curved surface which protrudes toward the upper flat surface from the bottom surface at the third inner diameter. | 06-13-2013 |
20130215600 | LIGHT SOURCE PACKAGE AND BACKLIGHT UNIT INCLUDING THE LIGHT SOURCE PACKAGE - A light source package includes a first light source configured to emit first light, an imaginary central axis of the first light extending in a first direction. The light source package may further include a second light source configured to emit second light, an imaginary central axis of the second light extending in a second direction that is different from the first direction. The light source package may further include a first optical part including a first surface that is configured to reflect at least a first portion of the first light. The light source package may further include a second optical part configured to spread the second light. The light source package may advantageously enable illuminating a desirably large display area with a minimum number of light sources and/or optical parts. | 08-22-2013 |
20130308343 | BACKLIGHT UNITS AND DISPLAY DEVICES INCLUDING THE SAME - A display device includes a display panel which displays an image, a backlight unit which supplies the display panel with light, an upper cover, and a lower cover. The upper and lower covers accommodate the display panel and the backlight unit. The backlight unit includes light guide plates spaced apart from each other, a light source part, an optical member and an optical diffusion member overlapping a space between the light guide plates. The optical diffusion member includes a diffusing part and a supporting part. The diffusing part faces the optical member, overlaps the space between the light guide plates, and diffuses light emitted from the light source part toward the optical member through the space between the light guide plates. The supporting part protrudes from a surface of the diffusing part which is opposite to the optical member, and is in a space between the light sources. | 11-21-2013 |
20140016351 | LIGHT SOURCE MODULE AND LIGHT SOURCE ASSEMBLY HAVING THE SAME - A light source module includes a light source unit which generates a light; a light emitting part spaced apart from the light source unit and comprising a light emitting surface; and a light transmitting part which transmits the light generated by the light source unit to the light emitting part. The light emitting part emits the light transmitted by the light transmitting part, through the light emitting surface. | 01-16-2014 |
20140146522 | BACKLIGHT UNIT AND DISPLAY DEVICE HAVING THE SAME - A backlight unit includes a light source part configured to emit a light and a reflective sheet disposed under the light source part. The light source part includes a first light source block including a plurality of light sources with first distances therebetween and a second light source block including a plurality of light sources with second distances therebetween. The first distances increase or decrease as the light sources of the first light source block are closer to an end portion of the first light source block than to a center portion of the first light source block, and the second distances increase as the light sources of the second light source block axe closer to an end portion of the second light source block than to a center portion of the second light source block. | 05-29-2014 |