Display panel and display device

By optimizing the electrode structure of the first driving transistor in the pixel driving circuit, the overlap area between the signal line and the electrode is reduced, the problem of signal interference at high resolution is solved, and the driving capability and control accuracy are improved.

CN119767789APending Publication Date: 2025-04-04TIANMA ADVANCED DISPLAY TECH INST (XIAMEN) CO LTD
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Patent Information

Application Number
CN202411874829.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

Under the demand for high resolution display, the dense distribution of transistors and signal lines in the pixel driving circuit leads to mutual interference between signal nodes, affecting driving capabilities.

Method used

By designing the electrode structure of the first driving transistor, the overlapping area of ​​the first portion of the first electrode and the second portion of the second electrode are smaller than the area of ​​the non-overlapping part in the direction perpendicular to the substrate, thereby reducing parasitic capacitance and coupling power consumption.

Benefits of technology

The parasitic capacitance and unnecessary coupling power consumption of the first driving transistor are reduced, voltage interference is reduced, and the driving capability and control accuracy of the pixel driving circuit are improved.

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Abstract

The invention discloses a display panel and a display device. The pixel driving circuit in the display panel comprises a first driving transistor, and the first driving transistor comprises a first electrode and a second electrode; the first electrode comprises a first branch part extending along a first direction, the second electrode comprises a second branch part extending along a second direction, the first branch part comprises a first section and a second section which are arranged along the first direction, the vertical projection of the second section on the substrate is overlapped with the vertical projection of the second branch part on the substrate, and the first section and the second section are arranged along the first direction. The area of the second segment per unit length is smaller than the area of the first segment per unit length. According to the display panel and the display device provided by the embodiment of the invention, the overlapping area between the first branch part of the first electrode and the second branch part of the second electrode is reduced, so that the parasitic capacitance formed between the first electrode and the second electrode of the first driving transistor is reduced, and the driving capability of the pixel driving circuit is further improved.
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