公开(公告)号：US20090184917A1

公开(公告)日：2009-07-23

申请号：US12318394

申请日：2008-12-29

申请人： Joonkyu Park ,  Jonghoon Kim ,  Rakwoo Choi

发明人： Joonkyu Park ,  Jonghoon Kim ,  Rakwoo Choi

IPC分类号： G09G3/36

CPC分类号： G09G3/3426 ,  G09G2320/064 ,  G09G2320/066 ,  G09G2330/021 ,  G09G2360/16

摘要： A liquid crystal display device and a dimming controlling method thereof are disclosed. The liquid crystal display device includes a liquid crystal display panel, a drive circuit supplying a data pulse and a gate pulse to the liquid crystal display panel, a backlight unit divided into a plurality of block including light sources, and irradiating lights of which luminescence is controlled by the blocks, respectively, a controller analyzing an input video data by the block unit, generating a block dimming value based on a result of the analyzing, repeating a low pass filtering to the block dimming value to generate a local dimming value, applying a predeterminded global dimming value to an average of the local dimming value to generate a dimming signal, and a backlight driver generating a PWM signal for controlling a luminescence of the light sources by the blocks respectively according to the dimming signal to drive the light sources by the blocks respectively.

摘要翻译： 公开了一种液晶显示装置及其调光控制方法。 液晶显示装置包括液晶显示面板，向液晶显示面板供给数据脉冲和栅极脉冲的驱动电路，分为包括光源的多个块的背光单元和发光的照射光 分别由块控制的控制器通过块单元分析输入视频数据，基于分析结果生成块调光值，对块调光值重复低通滤波以产生局部调光值，应用 将预先设定的全局调光值设置为平均局部调光值以产生调光信号;以及背光驱动器，其产生用于根据调光信号分别控制光源的发光的PWM信号，以驱动光源，以驱动光源 块分别。

公开(公告)号：US08111238B2

公开(公告)日：2012-02-07

申请号：US12318394

申请日：2008-12-29

申请人： Joonkyu Park ,  Jonghoon Kim ,  Rakwoo Choi

发明人： Joonkyu Park ,  Jonghoon Kim ,  Rakwoo Choi

IPC分类号： G09G3/36

CPC分类号： G09G3/3426 ,  G09G2320/064 ,  G09G2320/066 ,  G09G2330/021 ,  G09G2360/16

摘要： A liquid crystal display device and a dimming controlling method thereof are disclosed. The liquid crystal display device includes a liquid crystal display panel, a drive circuit supplying a data pulse and a gate pulse to the liquid crystal display panel, a backlight unit divided into a plurality of block including light sources, and irradiating lights of which luminescence is controlled by the blocks, respectively, a controller analyzing an input video data by the block unit, generating a block dimming value based on a result of the analyzing, repeating a low pass filtering to the block dimming value to generate a local dimming value, applying a predeterminded global dimming value to an average of the local dimming value to generate a dimming signal, and a backlight driver generating a PWM signal for controlling a luminescence of the light sources by the blocks respectively according to the dimming signal to drive the light sources by the blocks respectively.

摘要翻译： 公开了一种液晶显示装置及其调光控制方法。 液晶显示装置包括液晶显示面板，向液晶显示面板供给数据脉冲和栅极脉冲的驱动电路，分为包括光源的多个块的背光单元和发光的照射光 分别由块控制的控制器通过块单元分析输入视频数据，基于分析结果生成块调光值，对块调光值重复低通滤波以产生局部调光值，应用 将预先设定的全局调光值设置为平均局部调光值以产生调光信号;以及背光驱动器，其产生用于根据调光信号分别控制光源的发光的PWM信号，以驱动光源，以驱动光源 块分别。