公开(公告)号：US09240144B2

公开(公告)日：2016-01-19

申请号：US13849212

申请日：2013-03-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Byoungchul Cho ,  Kyungjoon Kwon ,  Heewon Ahn ,  Changkyun Park

IPC: G09G5/02 ,  G09G3/34

CPC classification number: G09G3/3406 ,  G09G3/3426 ,  G09G2320/0233 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2360/16

Abstract: 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.

Abstract translation: 液晶显示器包括液晶显示面板，包括多个光源的背光单元，背光单元向液晶显示面板的背面提供光;背光驱动电路，分别驱动多个先前确定的块 每个块包括基于每个块的调光值的光源，以及局部调光控制电路，其计算补偿由每个块的调光值导致的亮度降低的像素增益值，并且基于 每个块的灰阶饱和度。

公开(公告)号：US09378684B2

公开(公告)日：2016-06-28

申请号：US14514133

申请日：2014-10-14

Applicant: LG Display Co., Ltd.

Inventor： Dongwoo Kim ,  Heejung Hong ,  Kyungjoon Kwon ,  Heewon Ahn ,  Daeho Cho

IPC: G09G3/36 ,  G09G3/34

CPC classification number: G09G3/3406 ,  G09G3/3648 ,  G09G2320/0646 ,  G09G2320/066

Abstract: A method of compensating for pixel data includes extending a side portion and a corner portion of a real screen to set an virtual screen, setting dimming values of the virtual screen using dimming values of the real screen, calculating an amount of light of each of pixels on the real screen using the dimming values of the virtual screen mapped to a predetermined analysis area, and multiplying the amount of light of each pixel by a gain of each pixel to modulate pixel data.

Abstract translation: 补偿像素数据的方法包括延伸真实屏幕的侧部和角部以设置虚拟屏幕，使用实际屏幕的调光值设置虚拟屏幕的调光值，计算每个像素的光量 在实际屏幕上使用映射到预定分析区域的虚拟屏幕的调光值，并且将每个像素的光量乘以每个像素的增益以调制像素数据。

公开(公告)号：US20130215161A1

公开(公告)日：2013-08-22

申请号：US13849212

申请日：2013-03-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Byoungchul Cho ,  Kyungjoon Kwon ,  Heewon Ahn ,  Changkyun Park

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G3/3426 ,  G09G2320/0233 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2360/16

Abstract: 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.

Abstract translation: 液晶显示器包括液晶显示面板，包括多个光源的背光单元，背光单元向液晶显示面板的背面提供光;背光驱动电路，分别驱动多个先前确定的块 每个块包括基于每个块的调光值的光源，以及局部调光控制电路，其计算补偿由每个块的调光值导致的亮度降低的像素增益值，并且基于 每个块的灰阶饱和度。