Patent application number | Description | Published |
20100225674 | 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 including a light-emitting block includes generating a luminance representative value based on an average grayscale value and a maximum grayscale value extracted from an image signal corresponding to the light-emitting block. The method further includes detecting a predetermined pattern of the light-emitting block, generating a compensation control signal based on the predetermined pattern, generating a compensated luminance representative value by compensating the luminance representative value based on the compensation control signal, and driving the light-emitting block based on the luminance level of the light-emitting block corresponding to the compensated luminance representative value. | 09-09-2010 |
20100265262 | METHOD FOR CORRECTING PIXEL DATA, AND DISPLAY APPARATUS FOR PERFORMING THE METHOD - A method, according to an embodiment, is provided for correcting pixel data provided to a display apparatus. The display apparatus, according to an embodiment, includes a display panel having a plurality of pixels and a light source module having a plurality of light-emitting blocks. The method includes determining a pixel luminance that is a luminance of light provided to each of the pixels; and generating correction data to correct the pixel data, the correction data being generated based on the pixel luminance and a maximum emission luminance that is a maximum luminance of the light emitted from each of the light-emitting blocks. | 10-21-2010 |
20120200818 | LIQUID CRYSTAL DISPLAY - A liquid crystal display includes a plurality of pixels arranged in a matrix, each pixel having a first sub-pixel electrode and a second sub-pixel electrode. A first thin film transistor is connected to the first sub-pixel electrode. A second thin film transistor is connected to the second sub-pixel electrode. A third thin film transistor is connected to the second sub-pixel electrode. A fourth thin film transistor is connected to a drain electrode of the third thin film transistor. A first gate line is connected to the first thin film transistor and the second thin film transistor. A data line is connected to the first thin film transistor and the second thin film transistor. A second gate line is connected to the third thin film transistor. A third gate line is connected to the fourth thin film transistor. | 08-09-2012 |
Patent application number | Description | Published |
20080246903 | Liquid crystal display - A liquid crystal display (LCD) which includes a liquid crystal panel and a temperature-measurement apparatus. The temperature-measurement apparatus includes a temperature sensor which includes a variable-resistance element having a resistance that varies according to the temperature of the liquid crystal panel and a fixed-resistance element connected in series to the variable-resistance element, divides a first input voltage, and outputs a first temperature-dependent voltage that varies according to a temperature of the liquid crystal panel. A voltage divider which divides a second input voltage and outputs a reference voltage is provided. A differential amplifier receives at a first input the first temperature-dependent voltage and receives at a second input the reference voltage and amplifies a difference between the first temperature-dependent voltage and the reference voltage, and provides at an output a second temperature-dependent voltage. | 10-09-2008 |
20090109165 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A backlight unit for a display device that reduces power consumption while and display of undesirable artifacts in images is presented. The backlight unit is divided into a plurality of light-emitting regions, and a luminance control signal generator controls the luminance of light emitted by each of the light-emitting regions. The luminance of a particular light-emitting region is controlled by taking into account light interference from an adjacent light-emitting region. A display panel to display images through light emitted from the backlight unit, and a backlight driver drives the backlight unit. | 04-30-2009 |
20090109167 | LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - Provided are a liquid crystal display (LCD) and a method of driving the same. The LCD includes a timing controller which receives a first image signal corresponding to a first frame frequency and outputs a second image signal corresponding to a second frame frequency; a liquid crystal panel which receives the second image signal and displays an image using the second frame frequency; and a plurality of light-emitting blocks which provide light to the liquid crystal panel, wherein the light-emitting blocks are divided into a plurality of light-emitting groups, each group including at least one of the light-emitting blocks, and, in a first operation mode, a frame, which corresponds to the second frame frequency, includes an off section in which at least one of the light-emitting groups is turned off. | 04-30-2009 |
20090134814 | BACKLIGHT UNIT, DISPLAY DEVICE COMPRISING THE SAME, AND CONTROL METHOD THEREOF - A backlight unit includes a plurality of light source units arranged in a matrix form, a light source controller outputting a dimming signal to control a brightness of the light source units and a latch signal to control a light source unit row of the plurality of light source units to be sequentially driven according to a predetermined scanning period, and a plurality of light source driving units connected to light source unit columns of the plurality of light source units and supplying driving signals corresponding to the dimming signal to the light source units in the light source unit columns. | 05-28-2009 |
20100033513 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - Disclosed are a display device and a method of driving the same capable of improving display quality and reducing the manufacturing cost. A display device includes a display panel displaying images corresponding to image signals, a light-emission block supplying backlight to the display panel, and a backlight driver outputting a light data signal for determining luminance of backlight. One of a plurality of linear gamma curves is selected from a lookup table in accordance with average image luminance during prescribed frames, and the duty ratio of the light data signal is determined on the basis of the selected linear gamma curve. Each of the linear gamma curves represents the relationship between the average image luminance and the duty ratio of the light data signal. | 02-11-2010 |
20100085296 | BACKLIGHT ASSEMBLY - A backlight assembly includes a light source unit, at least one block driving unit, a controller unit and a noise removing circuit. The light source unit includes a plurality of dimming blocks generating light. The block driving unit drives the dimming blocks. The controller unit controls the block driving unit. The noise removing circuit is connected to the block driving unit and the controller unit to prevent noise from being applied to a reset terminal of the block driving unit | 04-08-2010 |
20100220108 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device includes; a signal control unit which receives a plurality of image signals and determines a plurality of representative image signals from the image signals, a plurality of lookup tables, each of which is configured to store a plurality of light data signals corresponding to the plurality of representative image signals, a plurality of light-emitting blocks configured to provide light according to the respective light data signals, and a display panel configured to display an image corresponding to the plurality of image signals, wherein the signal control unit determines an average luminance value of the plurality of image signals, selects one of the plurality of lookup tables according to the determined average luminance value, reads the light data signals from the selected lookup table and provides the light data signals to at least one of the plurality of light emitting blocks. | 09-02-2010 |