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Heewon
Heewon Ahn, Goyangsi KR
| Patent application number | Description | Published |
|---|---|---|
| 20110122057 | LIQUID CRYSTAL DISPLAY AND LOCAL DIMMING CONTROL METHOD OF THEREOF - A liquid crystal display includes a liquid crystal display panel, a backlight unit including a plurality of light sources, a backlight driving circuit that individually drives a plurality of previously determined blocks each including the light sources based on a dimming value of each of the blocks, and a local dimming control circuit. The local dimming control circuit adjusts the dimming value of each block based on the result of an analysis of input data, calculates and interpolates sampling gain values of predetermined sampling positions positioned inside each block so as to compensate for a change amount of a luminance resulting from the dimming value of each block, obtains a gain value of each pixel, and modulate the input data to be applied to a corresponding pixel based on the gain value of each pixel. | 05-26-2011 |
Heewon Ahn, Goyang-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110128302 | LIQUID CRYSTAL DISPLAY AND LOCAL DIMMING CONTROL CONTROL METHOD THEREOF - A liquid crystal display includes a liquid crystal display panel, a backlight unit including a plurality of light sources, the backlight unit providing light to a back surface of the liquid crystal display panel, a backlight driving circuit that individually drives a plurality of previously determined blocks each including the light sources based on a dimming value of each of the blocks, and a local dimming control circuit that calculates a pixel gain value compensating for a luminance reduction resulting from the dimming value of each block and corrects the pixel gain value based on a grayscale saturation level of each block. | 06-02-2011 |
Heewon Kwon, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20110242492 | DISPLAY DEVICE AND DISPLAY MODULE - A display module includes a plurality of light sources that emit light toward a display panel having a screen with a first aspect ratio. An image with a second aspect ratio different from the first aspect ratio is displayed in the first region and not in the second region, and one or more light sources corresponding to the second region are selectively turned off so that luminance of the first region is different from luminance of a second region. | 10-06-2011 |