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1. WO2020107848 - VOLTAGE DROP COMPENSATION SYSTEM AND METHOD FOR INTERNAL POWER SUPPLY OF DISPLAY PANEL

Publication Number WO/2020/107848
Publication Date 04.06.2020
International Application No. PCT/CN2019/089642
International Filing Date 31.05.2019
IPC
G09G 3/3291 2016.01
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
22using controlled light sources
30using electroluminescent panels
32semiconductive, e.g. using light-emitting diodes
3208organic, e.g. using organic light-emitting diodes
3275Details of drivers for data electrodes
3291in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
CPC
G09G 2320/0233
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
0233Improving the luminance or brightness uniformity across the screen
G09G 2330/021
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2330Aspects of power supply; Aspects of display protection and defect management
02Details of power systems and of start or stop of display operation
021Power management, e.g. power saving
G09G 3/3291
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
22using controlled light sources
30using electroluminescent panels
32semiconductive, e.g. using light-emitting diodes [LED]
3208organic, e.g. using organic light-emitting diodes [OLED]
3275Details of drivers for data electrodes
3291in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
Applicants
  • 昆山国显光电有限公司 KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD [CN]/[CN]
Inventors
  • 陈心全 CHEN, Xinquan
  • 胥春生 XU, Chunsheng
  • 张小宝 ZHANG, Xiaobao
  • 王峥 WANG, Zheng
Agents
  • 北京同立钧成知识产权代理有限公司 LEADER PATENT & TRADEMARK FIRM
Priority Data
201811447313.629.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) VOLTAGE DROP COMPENSATION SYSTEM AND METHOD FOR INTERNAL POWER SUPPLY OF DISPLAY PANEL
(FR) SYSTÈME ET PROCÉDÉ DE COMPENSATION DE CHUTE DE TENSION POUR UNE ALIMENTATION ÉLECTRIQUE INTERNE D'UN PANNEAU D'AFFICHAGE
(ZH) 显示面板内部电源的压降补偿系统及方法
Abstract
(EN)
A voltage drop compensation system and method for an internal power supply of a display panel, which are used for solving the technical problems of poor uniformity of screen brightness and high power consumption of the entire screen caused by a voltage drop in the internal power supply of the display panel. The voltage drop compensation system comprises: a voltage detection circuit (22) and a voltage compensation circuit (23), wherein the voltage detection circuit (22) is used for detecting an ELVDD voltage of each row of pixel units; the voltage compensation circuit (23) is used for compensating data voltage of each row of pixel units according to the detected ELVDD voltage.
(FR)
L'invention porte sur un système et sur un procédé de compensation de chute de tension pour une alimentation électrique interne d'un panneau d'affichage, qui sont utilisés pour résoudre les problèmes techniques de mauvaise uniformité de luminosité d'écran et de forte consommation d'énergie de tout l'écran provoquées par une chute de tension de l'alimentation électrique interne du panneau d'affichage. Le système de compensation de chute de tension comprend : un circuit de détection de tension (22) et un circuit de compensation de tension (23), le circuit de détection de tension (22) étant utilisée pour détecter une tension ELVDD de chaque rangée d'unités de pixel ; le circuit de compensation de tension (23) étant utilisé pour compenser une tension de données de chaque rangée d'unités de pixel en fonction de la tension ELVDD détectée.
(ZH)
一种显示面板内部电源的压降补偿系统及方法,用于解决显示面板内部电源压降造成的屏幕亮度均一性差、整屏功耗高的技术问题。所述压降补偿系统包括:电压侦测电路(22)、电压补偿电路(23),其中电压侦测电路(22)用于检测各行像素单元的ELVDD电压;电压补偿电路(23),用于根据检测到的ELVDD电压,对各行像素单元的数据电压进行补偿。
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Latest bibliographic data on file with the International Bureau