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1. WO2020140673 - COMMON VOLTAGE COMPENSATION CIRCUIT, DISPLAY DRIVER, AND DISPLAY DEVICE

Publication Number WO/2020/140673
Publication Date 09.07.2020
International Application No. PCT/CN2019/122968
International Filing Date 04.12.2019
IPC
G09G 3/36 2006.1
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 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
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
Applicants
  • 京东方科技集团股份有限公司 BOE TECHNOLOGY GROUP CO., LTD. [CN]/[CN]
  • 北京京东方显示技术有限公司 BEIJING BOE DISPLAY TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 董殿正 DONG, Dianzheng
  • 陈维涛 CHEN, Weitao
  • 崔晓鹏 CUI, Xiaopeng
  • 许文鹏 XU, Wenpeng
  • 林万 LIN, Wan
  • 王海旭 WANG, Haixu
Agents
  • 北京天昊联合知识产权代理有限公司 TEE & HOWE INTELLECTUAL PROPERTY ATTORNEYS
Priority Data
201910002330.702.01.2019CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) COMMON VOLTAGE COMPENSATION CIRCUIT, DISPLAY DRIVER, AND DISPLAY DEVICE
(FR) CIRCUIT DE COMPENSATION DE TENSION COMMUNE, PILOTE D'AFFICHAGE ET DISPOSITIF D'AFFICHAGE
(ZH) 公共电压补偿电路、显示驱动器和显示装置
Abstract
(EN)
A common voltage compensation circuit, comprising a feedback signal input end (Tfeed) and a compensation sub-circuit (300); wherein the compensation sub-circuit (300) is used for generating, according to a feedback signal (Vfeed) input by the feedback signal input end (Tfeed) and a reference common voltage (Vref), a compensation voltage (Vcom_out) for compensating a common voltage; the common voltage compensation circuit further comprises a first filtering sub-circuit (210); a first end of the first filtering sub-circuit (210) is electrically connected to the feedback signal input end (Tfeed); a second end of the first filtering sub-circuit (210) is electrically connected to a first clock signal line (CLKB1), wherein a feedback signal line (100) is adjacent to a second clock signal line (CLK1), and a first clock signal received in the first clock signal line (CLKB1) and a second clock signal received in the second clock signal line (CLK1) are mutually reverse phase signals. Further provided are a display driver and a display device. When the display device is operated, cross grains are few or even no cross grains exist.
(FR)
L'invention concerne un circuit de compensation de tension commune, comprenant une extrémité d'entrée de signal de rétroaction (Tfeed) et un sous-circuit de compensation (300) ; le sous-circuit de compensation (300) servant à générer, conformément à un signal de rétroaction (Vfeed) entré par l'extrémité d'entrée de signal de rétroaction (Tfeed) et à une tension commune de référence (Vref), une tension de compensation (Vcom_out) pour compenser une tension commune ; le circuit de compensation de tension commune comprenant en outre un premier sous-circuit de filtrage (210) ; une première extrémité du premier sous-circuit de filtrage (210) étant électriquement connectée à l'extrémité d'entrée de signal de rétroaction (Tfeed) ; une seconde extrémité du premier sous-circuit de filtrage (210) étant connectée électriquement à une première ligne de signal d'horloge (CLKB1), une ligne de signal de rétroaction (100) étant adjacente à une seconde ligne de signal d'horloge (CLK1), et un premier signal d'horloge reçu dans la première ligne de signal d'horloge (CLKB1) et un second signal d'horloge reçu dans la seconde ligne de signal d'horloge (CLK1) étant des signaux de phase réciproquement inverses. En outre, la présente invention concerne un pilote d'affichage et un dispositif d'affichage. Lorsque le dispositif d'affichage est mis en œuvre, des grains croisés sont peu nombreux, voire même inexistants.
(ZH)
一种公共电压补偿电路,包括反馈信号输入端(Tfeed)和补偿子电路(300);补偿子电路(300)用于根据反馈信号输入端(Tfeed)输入的反馈信号(Vfeed)与基准公共电压(Vref)生成用于补偿公共电压的补偿电压(Vcom_out),公共电压补偿电路还包括第一滤波子电路(210),第一滤波子电路(210)的第一端与反馈信号输入端(Tfeed)电连接,第一滤波子电路(210)的第二端与第一时钟信号线(CLKB1)电连接,其中,反馈信号线(100)与第二时钟信号线(CLK1)相邻,第一时钟信号线(CLKB1)中接收到的第一时钟信号与第二时钟信号线(CLK1)中接收到的第二时钟信号互为反相信号。还提供一种显示驱动器和一种显示装置,显示装置在操作时,横纹较少甚至没有横纹。
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Latest bibliographic data on file with the International Bureau