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1. CN109712581 - Common voltage compensation circuit, display driver and display device

Office
China
Application Number 201910002330.7
Application Date 02.01.2019
Publication Number 109712581
Publication Date 03.05.2019
Grant Number 109712581
Grant Date 29.01.2021
Publication Kind B
IPC
G09G 3/36
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
36using liquid crystals
CPC
G09G 3/36
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
G09G 3/3655
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
3611Control of matrices with row and column drivers
3648using an active matrix
3655Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
G09G 3/3696
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
3611Control of matrices with row and column drivers
3696Generation of voltages supplied to electrode drivers
G09G 2310/0286
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
0264Details of driving circuits
0286Details of a shift registers arranged for use in a driving circuit
G09G 2310/0291
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
0264Details of driving circuits
0291Details of output amplifiers or buffers arranged for use in a driving circuit
G09G 2310/08
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
08Details of timing specific for flat panels, other than clock recovery
Applicants BOE TECHNOLOGY GROUP CO., LTD.
京东方科技集团股份有限公司
BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
北京京东方显示技术有限公司
Inventors DONG DIANZHENG
董殿正
CHEN WEITAO
陈维涛
CUI XIAOPENG
崔晓鹏
XU WENPENG
许文鹏
LIN WAN
林万
WANG HAIXU
王海旭
Agents 北京天昊联合知识产权代理有限公司 11112
北京天昊联合知识产权代理有限公司 11112
Title
(EN) Common voltage compensation circuit, display driver and display device
(ZH) 公共电压补偿电路、显示驱动器和显示装置
Abstract
(EN)
The invention provides a common voltage compensation circuit. The common voltage compensation circuit comprises a feedback signal input end and a compensation sub-circuit. The compensation sub-circuitis used for generating a corrected common voltage signal according to a feedback signal input by the feedback signal input end and a standard common voltage signal; The common voltage compensation circuit also comprises a first filtering sub-circuit. the first end of the first filtering sub-circuit is electrically connected with the feedback signal input end; wherein the first end of the first filtering sub-circuit is used for being electrically connected with a first clock signal line, a clock signal line adjacent to the feedback signal line is a second clock signal line, and a first clock signal received in the first clock signal line and a second clock signal received in the second clock signal line are mutually reverse phase signals. The invention further provides a display driver anda display device. When the display device is used for displaying, cross grains are few or even no cross grains exist.

(ZH)
本发明提供一种公共电压补偿电路,所述公共电压补偿电路包括反馈信号输入端和补偿子电路;所述补偿子电路用于根据所述反馈信号输入端输入的反馈信号与标准公共电压信号生成矫正后的公共电压信号,所述公共电压补偿电路还包括第一滤波子电路,所述第一滤波子电路的第一端与所述反馈信号输入端电连接,所述第一滤波子电路的第二端用于与第一时钟信号线电连接,其中,与所述反馈信号线相邻的时钟信号线为第二时钟信号线,所述第一时钟信号线中接收到的第一时钟信号与所述第二时钟信号线中接收到的第二时钟信号互为反相信号。本发明还提供一种显示驱动器和一种显示装置。所述显示装置在进行显示时,横纹较少甚至没有横纹。

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