CN-122024646-A - Pixel circuit, display substrate and display device

CN122024646ACN 122024646 ACN122024646 ACN 122024646ACN-122024646-A

Abstract

The present disclosure provides a pixel circuit, a display substrate and a display device. The pixel circuit comprises a driving circuit, a light-emitting element, a first reset circuit and a deterioration prevention circuit, wherein the driving circuit is connected with a first node and a second node and is used for generating a first driving signal according to a first power supply signal and the potential of the first node, the light-emitting element is connected with the second node and is used for emitting light according to a second power supply signal and the first driving signal, the first reset circuit is connected with the second node and is used for resetting the second node based on a first voltage signal, one end of the deterioration prevention circuit is connected with the first reset circuit, and the other end of the deterioration prevention circuit is used for receiving the first voltage signal and is used for conducting breaking treatment when the light-emitting element is in short circuit.

Inventors

PU CHAO
WANG YI
WANG XIUFANG
Peng Jiazao
HUANG YINHU
LU PENGCHENG
TIAN CHENG
FAN ZHICHENG
MA ZHAO
ZHANG YINGBING
LI LIDA
Xie Zhuoyang

Assignees

京东方科技集团股份有限公司
云南创视界光电科技有限公司
北京京东方技术开发有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. A pixel circuit, comprising: the driving circuit is connected with the first node and the second node and is used for generating a first driving signal according to a first power supply signal and the potential of the first node; The light-emitting element is connected with the second node and is used for emitting light according to a second power supply signal and the first driving signal; The first reset circuit is connected with the second node and is used for resetting the second node based on a first voltage signal; And one end of the deterioration prevention circuit is connected with the first reset circuit, and the other end of the deterioration prevention circuit is used for receiving the first voltage signal and carrying out the disconnection treatment when the light-emitting element is in short circuit.
2. The pixel circuit according to claim 1, wherein the deterioration prevention circuit comprises a diode having a positive electrode for receiving the first voltage signal, and a negative electrode connected to the second node.
3. The pixel circuit of claim 1, wherein the anti-degradation circuit comprises a fuse resistor.
4. A pixel circuit according to any one of claims 1-3, further comprising: and the data writing circuit is connected with the first node and is used for controlling the potential of the first node according to a data signal.
5. The pixel circuit of claim 4, further comprising: the first storage circuit is connected with the data writing circuit and the first node; One end of the second storage circuit is used for receiving a second voltage signal, and the other end of the second storage circuit is connected with the first node; At least one of the first memory circuit and the second memory circuit is used for modifying the potential of the first node.
6. The pixel circuit of claim 5, further comprising: a second reset circuit connected to the first node for resetting the first node based on a third voltage signal; and the on-off control circuit is connected with the data writing circuit and the first node and is used for controlling the communication between the data writing circuit and the first node in a resetting stage and a lighting stage and controlling the disconnection between the data writing circuit and the first node in a data writing stage and a compensating stage.
7. The pixel circuit of claim 1, further comprising: The compensation control circuit is connected with the first node and the third node, and the third node is connected with the driving circuit and used for controlling the connection or disconnection between the first node and the third node; And the first light-emitting control circuit is connected with the third node and the second node and is used for controlling the communication between the third node and the second node in a light-emitting stage and controlling the disconnection between the third node and the second node in a reset stage, a compensation stage and a data writing stage.
8. The pixel circuit of claim 1, further comprising: And one end of the second light-emitting control circuit is used for receiving the first power supply signal, the other end of the second light-emitting control circuit is connected with the driving circuit and used for controlling the driving circuit to be capable of receiving the first power supply signal in a compensation stage and a light-emitting stage and controlling the driving circuit to be incapable of receiving the first power supply signal in a reset stage and a data writing stage.
9. A display substrate comprising a pixel circuit as claimed in any one of claims 1 to 8.
10. A display device comprising the display substrate according to claim 9.

Description

Pixel circuit, display substrate and display device Technical Field The disclosure relates to the field of display technologies, and in particular, to a pixel circuit, a display substrate and a display device. Background With the continuous development of display technology, silicon-based Organic LIGHT EMITTING (OLED) display products are attracting attention due to their advantages of high resolution, low power consumption, small size, light weight, and the like. The method has good application prospect in the high-resolution near-to-eye display industries such as wearable equipment, industrial security, medical treatment and the like. However, the existing silicon-based OLED has the problem of point-to-line change caused by the short circuit of the cathode and anode of the sub-pixel. Disclosure of Invention In view of the above, an object of the present disclosure is to provide a pixel circuit, a display substrate and a display device. In view of the above object, a first aspect of the present disclosure provides a pixel circuit, comprising: the driving circuit is connected with the first node and the second node and is used for generating a first driving signal according to a first power supply signal and the potential of the first node; The light-emitting element is connected with the second node and is used for emitting light according to a second power supply signal and the first driving signal; The first reset circuit is connected with the second node and is used for resetting the second node based on a first voltage signal; And one end of the deterioration prevention circuit is connected with the first reset circuit, and the other end of the deterioration prevention circuit is used for receiving the first voltage signal and carrying out the disconnection treatment when the light-emitting element is in short circuit. In some embodiments, the anti-deterioration circuit comprises a diode, a positive electrode of the diode is used for receiving the first voltage signal, and a negative electrode of the diode is connected with the second node. In some embodiments, the anti-deterioration circuit comprises a fuse resistor. In some embodiments, the pixel circuit further comprises: and the data writing circuit is connected with the first node and is used for controlling the potential of the first node according to a data signal. In some embodiments, the pixel circuit further comprises: the first storage circuit is connected with the data writing circuit and the first node; One end of the second storage circuit is used for receiving a second voltage signal, and the other end of the second storage circuit is connected with the first node; At least one of the first memory circuit and the second memory circuit is used for modifying the potential of the first node. In some embodiments, the pixel circuit further comprises: a second reset circuit connected to the first node for resetting the first node based on a third voltage signal; and the on-off control circuit is connected with the data writing circuit and the first node and is used for controlling the communication between the data writing circuit and the first node in a resetting stage and a lighting stage and controlling the disconnection between the data writing circuit and the first node in a data writing stage and a compensating stage. In some embodiments, the pixel circuit further comprises: The compensation control circuit is connected with the first node and the third node, and the third node is connected with the driving circuit and used for controlling the connection or disconnection between the first node and the third node; And the first light-emitting control circuit is connected with the third node and the second node and is used for controlling the communication between the third node and the second node in a light-emitting stage and controlling the disconnection between the third node and the second node in a reset stage, a compensation stage and a data writing stage. In some embodiments, the pixel circuit further comprises: And one end of the second light-emitting control circuit is used for receiving the first power supply signal, the other end of the second light-emitting control circuit is connected with the driving circuit and used for controlling the driving circuit to be capable of receiving the first power supply signal in a compensation stage and a light-emitting stage and controlling the driving circuit to be incapable of receiving the first power supply signal in a reset stage and a data writing stage. A second aspect of the present disclosure provides a display substrate comprising a pixel circuit as described in the first aspect. A third aspect of the present disclosure provides a display device comprising the display substrate as described in the second aspect. As can be seen from the above, the pixel circuit, the display substrate and the display device provided by the present disclosure are provided, by adding the deterioration