Invention Grant
- Patent Title: Liquid crystal display and method of local dimming thereof
- Patent Title (中): 液晶显示器及其局部调光方法
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Application No.: US12848437Application Date: 2010-08-02
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Publication No.: US08890900B2Publication Date: 2014-11-18
- Inventor: Kyungjoon Kwon , Injae Chung , Euiyeol Oh
- Applicant: Kyungjoon Kwon , Injae Chung , Euiyeol Oh
- Applicant Address: KR Seoul
- Assignee: LG Display Co., Ltd.
- Current Assignee: LG Display Co., Ltd.
- Current Assignee Address: KR Seoul
- Agency: Morgan, Lewis & Bockius LLP
- Priority: KR10-2009-0113985 20091124
- Main IPC: G09G5/10
- IPC: G09G5/10 ; G09G3/34 ; G09G3/36

Abstract:
A liquid crystal display includes a display panel, a backlight unit providing light to the display panel, a representative value adjusting unit that divides an input image in conformity with a plurality of blocks divided from the display panel and a light emitting surface of the backlight unit, selectively adjusts a representative value of each block based on a luminance difference between the blocks and a grayscale banding degree of each block, and generates a modified representative value of each block, a dimming value determining unit that maps the modified representative value of each block to a predetermined dimming curve and selects a dimming value of each block, and a light source driver for driving light sources of the backlight unit based on the dimming value of each block.
Public/Granted literature
- US20110122171A1 LIQUID CRYSTAL DISPLAY AND METHOD OF LOCAL DIMMING THEREOF Public/Granted day:2011-05-26
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