IP Library › Granted Patent US 12,336,407
Granted Patent B2
US 12,336,407 · App. 17/899,894 · Granted Jun 17, 2025

Display panel and display device

Inventor: Ying Zheng (Wuhan, CN)
Assignee: WUHAN CHINA STAR OPTOELECTRONIC SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
H10K59/1315H10K59/126H10K59/131
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Quick Facts
Patent No.
US 12,336,407
App. No.
17/899,894
Granted
Jun 17, 2025
Kind
B2
Abstract

A display panel and a display device are provided. The display panel includes a substrate; a light-shielding metal layer disposed on a side of the substrate, wherein the light-shielding metal layer includes a first trace disposed in a frame area; a driving circuit layer disposed on a side of the light-shielding metal layer away from the substrate, wherein the driving circuit layer includes a pixel driving circuit disposed in the display area and a gate driving circuit disposed in the frame area; a first electrode disposed on a side of the driving circuit layer away from the substrate; a light-emitting layer disposed on a side of the first electrode away from the substrate; and a second electrode disposed on a side of the light-emitting layer away from the substrate, wherein the first trace and the gate driving circuit are at least partially overlapped.

Claims (20)

1. A display panel, comprising a display area and a frame area arranged on a side of the display area, wherein the display panel comprises:

a substrate;

a light-shielding metal layer disposed on a side of the substrate, wherein the light-shielding metal layer comprises a first trace disposed in the frame area;

a driving circuit layer disposed on a side of the light-shielding metal layer away from the substrate, wherein the driving circuit layer comprises a pixel driving circuit disposed in the display area and a gate driving circuit disposed in the frame area, and the gate driving circuit is electrically connected to the pixel drive circuit;

a first electrode disposed on a side of the driving circuit layer away from the substrate;

a light-emitting layer disposed on a side of the first electrode away from the substrate; and

a second electrode disposed on a side of the light-emitting layer away from the substrate, and the second electrode is electrically connected to the first trace through a via hole,

wherein, the first trace and the gate driving circuit are at least partially overlapped.

2. The display panel according to claim 1 , wherein the driving circuit layer comprises:

a semiconductor layer disposed on a side of the light-shielding metal layer away from the substrate, wherein the semiconductor layer comprises a first semiconductor corresponding to the pixel driving circuit and a second semiconductor corresponding to the gate driving circuit;

a first metal layer disposed on a side of the semiconductor layer away from the substrate, wherein the first metal layer comprises a first source electrode and a first drain electrode corresponding to the pixel driving circuit, and a second trace disposed in the frame area,

wherein the second trace and the gate driving circuit are not overlapped, and the second trace and the first trace are connected in parallel through a via hole.

3. The display panel according to claim 2 , wherein a width of the second trace is smaller than a width of the first trace.

4. The display panel according to claim 3 , wherein a vertical projection of the second trace on the substrate is located within a vertical projection of the first trace on the substrate.

5. The display panel according to claim 4 , wherein an edge of a side of the first trace away from the gate driving circuit is a first edge, and the second trace away from an edge of one side of the gate driving circuit is a second edge, and the first edge is leveled with the second edge.

6. The display panel according to claim 5 , wherein the first trace comprises a first part and a second part, the first part and the second trace are arranged overlapped, the second part and the second trace are not overlapped, wherein a width of the first part is smaller than a width of the second part.

7. The display panel according to claim 6 , wherein the width of the first part is the first width, the width of the second part is the second width, and the first width is more than 7 times of the second width.

8. The display panel according to claim 7 , wherein a sum of the first width and the second width is greater than 150 μm, and the first width is 10 μm-20 μm.

9. The display panel according to claim 1 , wherein a vertical projection of the second trace on the substrate is within a vertical projection of the first trace on the substrate, wherein the first trace further comprises a plurality of hollow parts, and the hollow parts and the second trace are not overlapped.

10. A display device, comprising a casing and the display panel according to claim 1 , wherein the casing has an accommodating space, and the display panel is disposed in in the accommodating space.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 31, 2022
From: ZHENG, YING
To: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Reel/Frame 060950/0816 →
Priority Claims (1)
CN 202210884922.8 · Jul 26, 2022 · national
Continuity (1)
Related Publication 20240040874A1 · Feb 1, 2024
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