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1. (WO2018201513) LIQUID CRYSTAL DISPLAY PANEL AND COMMON VOLTAGE COMPENSATION METHOD AND DEVICE THEREOF

Pub. No.:    WO/2018/201513    International Application No.:    PCT/CN2017/083825
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Thu May 11 01:59:59 CEST 2017
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: ZHAO, Li
赵丽
Title: LIQUID CRYSTAL DISPLAY PANEL AND COMMON VOLTAGE COMPENSATION METHOD AND DEVICE THEREOF
Abstract:
A liquid crystal display panel (100) and a common voltage compensation method and device (600) thereof. The liquid crystal display panel (100) comprises: an array substrate (110) and a common voltage compensation circuit (130). The array substrate (110) comprises a plurality of scan lines (111), a plurality of data lines (113), a plurality of common electrode lines (115), and a plurality of sub-pixel units (117) arranged in an array. The scan lines (111) are used to supply a driving voltage to the sub-pixel units (117). The data lines (113) are used to supply a data voltage to the sub-pixel units (117). The common electrode lines (115) are used to supply a common voltage to the sub-pixel units (117). The common voltage compensation circuit (130) comprises a feedback signal processor (131), an amplifier (133), and a common voltage adjustment circuit (135). The feedback signal processor (131) is connected to the common electrode lines (115), and is used for acquiring a feedback signal of the common voltage. The amplifier (133) is used for amplifying an inverted feedback signal to obtain a compensation signal, and the common voltage adjustment circuit (135) is used for inputting the compensation signal to the common electrode lines (115). The stability of the common voltage of the liquid crystal display panel (100) is improved.