公开(公告)号：US10120236B2

公开(公告)日：2018-11-06

申请号：US15118880

申请日：2016-06-29

Applicant: Wuhan China Star Optoelectronics Technology Co., Ltd.

Inventor： Xingling Guo ,  Xiang Yang ,  Jiehui Qin

IPC: G09G3/36 ,  G02F1/1335 ,  G09G3/34

Abstract: The disclosure provides a liquid crystal display driving circuit and a liquid crystal display device. The liquid crystal display driving circuit includes a content adaptive brightness control circuit and a Gamma voltage adjustment circuit, when the content adaptive brightness control circuit is turned on, the brightness of the backlight module is switched from first backlight brightness to second backlight brightness under the control of the content adaptive brightness control circuit, when the brightness of the backlight module is the first backlight brightness, the Gamma voltage adjustment circuit outputs a first Gamma voltage for adjusting grayscale brightness of the liquid crystal display to be first grayscale brightness, when the brightness of the backlight module is the second backlight brightness, the Gamma voltage adjustment circuit outputs a second Gamma voltage for adjusting the grayscale brightness of the liquid crystal display to be second grayscale brightness.

公开(公告)号：US20170103713A1

公开(公告)日：2017-04-13

申请号：US14778306

申请日：2015-04-13

Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd ,  Wuhan China Star Optoelectronics Technology Co., Ltd

Inventor： Xingling Guo ,  Taisheng An

IPC: G09G3/34 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3413 ,  G09G3/2003 ,  G09G3/3607 ,  G09G2300/0452 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2360/16

Abstract: Disclosed is a method and a device for driving a liquid crystal display panel. The method comprises the following steps. A first pixel signal of an image to be displayed is converted to a second pixel signal. An adjusted gray scale of each of sub-pixels and/or an adjusted backlight brightness of a backlight is acquired based on the second pixel signal and the first pixel signal. Each of the sub-pixels in the liquid crystal display panel is driven so that each of the sub-pixels can have a corresponding adjusted gray scale, and/or, the backlight is activated so that the backlight can have the adjusted backlight brightness. With the driving device and the driving method, it is able to ensure that when the RGBW liquid crystal display panel displays a solid colored image, the brightness of the image will not be reduced.