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1. WO2020140755 - VOLTAGE COMPENSATION CIRCUIT AND METHOD, DISPLAY DRIVE CIRCUIT, DISPLAY DEVICE

Publication Number WO/2020/140755
Publication Date 09.07.2020
International Application No. PCT/CN2019/126221
International Filing Date 18.12.2019
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 2310/0267
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
0267Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
G09G 2310/0278
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
0278Details of driving circuits arranged to drive both scan and data electrodes
G09G 2320/0276
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
02Improving the quality of display appearance
0271Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
0276for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
G09G 2320/029
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
02Improving the quality of display appearance
029by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
G09G 2320/0673
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
06Adjustment of display parameters
0673for control of gamma adjustment, e.g. selecting another gamma curve
G09G 3/2092
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
2092Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
Applicants
  • 京东方科技集团股份有限公司 BOE TECHNOLOGY GROUP CO., LTD. [CN]/[CN]
  • 合肥京东方显示技术有限公司 HEFEI BOE DISPLAY TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 韩屹湛 HAN, Yizhan
  • 周留刚 ZHOU, Liugang
  • 孙建伟 SUN, Jianwei
  • 李涛 LI, Tao
  • 熊玉龙 XIONG, Yulong
  • 张春恒 ZHANG, Chunheng
  • 李清 LI, Qing
Agents
  • 北京天昊联合知识产权代理有限公司 TEE & HOWE INTELLECTUAL PROPERTY ATTORNEYS
Priority Data
201910002894.002.01.2019CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) VOLTAGE COMPENSATION CIRCUIT AND METHOD, DISPLAY DRIVE CIRCUIT, DISPLAY DEVICE
(FR) CIRCUIT ET PROCÉDÉ DE COMPENSATION DE TENSION, CIRCUIT DE COMMANDE D'AFFICHAGE ET DISPOSITIF D'AFFICHAGE
(ZH) 电压补偿电路及方法、显示驱动电路、显示装置
Abstract
(EN)
A voltage compensation circuit and method, a display drive circuit, and a display device. The voltage compensation circuit is applied to a display panel, and the display panel is used to display an image to be detected. The voltage compensation circuit comprises: a voltage analysis sub-circuit and a gamma voltage generation sub-circuit. The voltage analysis sub-circuit is connected to the display panel, and is used to obtain the pixel voltage of a target pixel in the image to be detected, determine whether the display panel is abnormal according to the pixel voltage, and generate a compensation control signal under the abnormal state of the display panel. The gamma voltage generation sub-circuit is connected to the voltage analysis sub-circuit, and is used to compensate gamma voltage corresponding to the image to be detected according to the compensation control signal, so that the pixel voltage of the target pixel is consistent. The present application ameliorates the horizontal crosstalk problem of the display panel, and improves the display effect of the display panel.
(FR)
L’invention concerne un circuit et un procédé de compensation de tension, un circuit de commande d'affichage et un dispositif d’affichage. Le circuit de compensation de tension est appliqué à un panneau d'affichage, et le panneau d'affichage est utilisé pour afficher une image à détecter. Le circuit de compensation de tension comprend : un sous-circuit d'analyse de tension et un sous-circuit de génération de tension gamma. Le sous-circuit d'analyse de tension est connecté au panneau d'affichage, et est utilisé pour obtenir la tension de pixel d'un pixel cible dans l'image à détecter, déterminer si le panneau d'affichage est anormal selon la tension de pixel, et générer un signal de commande de compensation dans l'état anormal du panneau d'affichage. Le sous-circuit de génération de tension gamma est connecté au sous-circuit d'analyse de tension, et est utilisé pour compenser une tension gamma correspondant à l'image à détecter selon le signal de commande de compensation, de sorte que la tension de pixel du pixel cible soit cohérente. La présente invention améliore le problème de diaphonie horizontale du panneau d'affichage ainsi que l'effet d'affichage du panneau d'affichage.
(ZH)
一种电压补偿电路及方法、显示驱动电路和显示装置,该电压补偿电路应用于显示面板上,显示面板用于显示待检测图像,电压补偿电路包括:电压分析子电路和伽马电压生成子电路,电压分析子电路与显示面板连接,用于获取待检测图像中目标像素的像素电压,根据像素电压来判断显示面板是否异常,并且在显示面板异常的状态下,生成补偿控制信号;伽马电压生成子电路与电压分析子电路连接,用于根据补偿控制信号,对待检测图像对应的伽马电压进行补偿,以使得目标像素的像素电压一致。改善了显示面板的水平串扰问题,提升了显示面板的显示效果。
Also published as
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