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1. (WO2018040165) FLICKER PHENOMENON CONTROL CIRCUIT OF LIQUID CRYSTAL DISPLAY

Pub. No.:    WO/2018/040165    International Application No.:    PCT/CN2016/100450
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Sep 28 01:59:59 CEST 2016
IPC: G09G 3/36
Applicants: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO.,LTD.
深圳市华星光电技术有限公司
Inventors: LI, Wenfang
李文芳
ZHANG, Xianming
张先明
CHEN, Xinhong
陈辛洪
Title: FLICKER PHENOMENON CONTROL CIRCUIT OF LIQUID CRYSTAL DISPLAY
Abstract:
A flicker phenomenon control circuit of a liquid crystal display, comprising: a master control chip (10), an LDO circuit (20), a first resistor (R1), a second resistor (R2), and a set resistor (Rset). The master control chip (10) comprises: a working voltage input end (11), a common voltage output end (12), and a voltage division reference voltage input end (14). The LDO circuit (20) generates a voltage division reference voltage (VREF2) according to a received external voltage. One end of the first resistor (R1) receives the voltage division reference voltage (VREF2), and the other end of the first resistor (R1) is connected to the voltage division reference voltage input end (14). One end of the second resistor (R2) is connected to the other end of the first resistor (R1), and the other end of the second resistor (R2) is electrically grounded. One end of the set resistor (Rset) is connected to the master control chip (10), and the other end of the set resistor (Rset) is electrically grounded. The working voltage input end (11) is used for receiving an external voltage to be used as a working voltage (VAA) of the master control chip. The common voltage output end (12) is used for outputting a common voltage (VCOM) generated by the master control chip (10). There is a positive correlation between the common voltage (VCOM) and the voltage division reference voltage (VREF2). The flicker phenomenon control circuit reduces the flicker phenomenon of a liquid crystal display, and optimizes the display effect of the liquid crystal display.