A pixel circuit, display panel and display device

A pixel circuit and voltage technology, which is applied in the field of display panels, display devices, and pixel circuits, can solve the problems of uneven display of display panels, stealing light of light-emitting elements, etc., so as to avoid uneven display and improve the effect of stealing brightness.
CN110473503BActive Publication Date: 2021-03-02WUHAN TIANMA MICRO ELECTRONICS CO LTD
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN TIANMA MICRO ELECTRONICS CO LTD
Publication Date
2021-03-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a pixel circuit, a display panel and a display device. The pixel circuit comprises a data writing module, a threshold compensation module, a light-emitting control module, a first reset module, a driving transistor, a voltage neutralization module and a light-emitting element, wherein the first reset module is electrically connected with the first node, and the gate of the driving transistor is electrically connected with the first node; the first pole of the driving transistor is electrically connected with the second node, and the second pole is electrically connectedwith the third node; the data writing module is electrically connected with the second node; the threshold compensation module is electrically connected with the first node, the third node and the first voltage signal end; the light-emitting control module is used for providing a first voltage signal to a second node and providing a signal of a third node to a fourth node under the control of a light-emitting control signal; the light-emitting element is electrically connected with the fourth node; and the voltage neutralizing module is used for reducing the voltage neutralized after the thirdnode and the fourth node are connected under the control of the light-emitting control signal. The pixel circuit can solve the problem that the light-emitting element is turned on stealthily.
Need to check novelty before this filing date? Find Prior Art

Description

【Technical field】

[0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a display panel and a display device. 【Background technique】

[0002] Existing display technologies include organic light-emitting display technologies, in which organic light-emitting diodes (Organic Light-Emitting Diode, OLED) are used as light-emitting elements. Organic light-emitting diodes have the advantages of self-illumination, high contrast, ultra-wide viewing angle, low power consumption, etc., and can realize the production of flexible displays, so they have become the focus of current research.

[0003] An organic light emitting display panel includes a pixel array and a pixel circuit that provides driving current to each organic light emitting diode in the pixel array. Circuit stability is very important in the pixel circuit. When using the existing pixel circuit structure to drive the display panel to display light, there may be a proble...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More