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1. WO2020062811 - PIXEL CIRCUIT AND DRIVING METHOD THEREFOR, DISPLAY PANEL, AND DISPLAY DEVICE

Publication Number WO/2020/062811
Publication Date 02.04.2020
International Application No. PCT/CN2019/079622
International Filing Date 26.03.2019
IPC
G09G 3/3258 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
3225using an active matrix
3258with pixel circuitry controlling the voltage across the light-emitting element
CPC
G09G 3/3258
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]
3225using an active matrix
3258with pixel circuitry controlling the voltage across the light-emitting element
G09G 3/3266
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]
3266Details of drivers for scan electrodes
Applicants
  • 昆山国显光电有限公司 KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD. [CN]/[CN]
Inventors
  • 朱正勇 ZHU, Zhengyong
  • 范龙飞 FAN, Longfei
  • 朱晖 ZHU, Hui
Agents
  • 广州华进联合专利商标代理有限公司 ADVANCE CHINA IP LAW OFFICE
Priority Data
201811141850.828.09.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PIXEL CIRCUIT AND DRIVING METHOD THEREFOR, DISPLAY PANEL, AND DISPLAY DEVICE
(FR) CIRCUIT PIXEL ET PROCÉDÉ D'EXCITATION ASSOCIÉ, PANNEAU D'AFFICHAGE, ET DISPOSITIF D'AFFICHAGE
(ZH) 像素电路及其驱动方法、显示面板、显示装置
Abstract
(EN)
The present application provides a pixel circuit and a driving method therefor, a display panel, and a display device. The pixel circuit comprises: a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, a capacitor, and a light-emitting diode. According to the above pixel circuit, a first polar plate and a second polar plate of the capacitor are initialized by setting a first light emission control signal and a second light emission control signal, respectively, so as to ensure that the initial states of pixel circuits are the same. A second reference voltage is utilized to compensate for the control end of the first transistor by means of the first capacitor, so that the driving current flowing through the first transistor is related to the second reference voltage but not related to a first power voltage.
(FR)
L'invention concerne un circuit pixel et un procédé d'excitation associé, un panneau d'affichage, et un dispositif d'affichage. Le circuit pixel comprend un premier transistor, un deuxième transistor, un troisième transistor, un quatrième transistor, un cinquième transistor, un sixième transistor, un septième transistor, un condensateur, et une diode électroluminescente. Selon le circuit pixel susmentionné, une première plaque polaire et une seconde plaque polaire du condensateur sont initialisées en définissant un premier signal de commande d'émission de lumière et un second signal de commande d'émission de lumière, respectivement, de sorte à garantir la similitude des états initiaux des circuits pixels. Une seconde tension de référence est utilisée pour compenser l'extrémité de commande du premier transistor au moyen du premier condensateur, de sorte que le courant d'excitation qui circule dans le premier transistor est lié à la seconde tension de référence mais pas à une première tension de puissance.
(ZH)
本申请提供一种像素电路及其驱动方法、显示面板和显示装置。像素电路包括:第一晶体管、第二晶体管、第三晶体管、第四晶体管、第五晶体管、第六晶体管、第七晶体管、电容和发光二极管。上述像素电路,通过设置第一发光控制信号和第二发光控制信号分别对电容的第一极板和第二极板进行初始化,以保证像素电路的初始状态相同。利用第二参考电压通过电容对第一晶体管的控制端进行补偿,以使流过第一晶体管的驱动电流与第二参考电压有关而与第一电源电压无关。
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