Display panel and display device

Patent metadata

Field	Value
Publication number	US-12178102-B2
Application number	US-202117437142-A
Country	US
Kind code	B2
Filing date	May 18, 2021
Priority date	May 21, 2020
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A display panel and a display device are provided. The display panel includes a base substrate and a conductive member, wherein the conductive member is located on the base substrate and includes a first conductive sub-layer, a second conductive sub-layer and a third conductive sub-layer stacked in sequence; the first conductive sub-layer is closer to the base substrate than the third conductive sub-layer; a conductivity of the first conductive sub-layer is smaller than that of the second conductive sub-layer, and a melting point of the third conductive sub-layer is larger than that of the second conductive sub-layer; the second conductive sub-layer includes a first surface close to the first conductive sub-layer and a second surface close to the third conductive sub-layer, the first surface and the second surface are oppositely arranged; the third conductive sub-layer protrudes from the second surface along a width direction of the conductive member.

First claim

What is claimed is:

1. A display panel, comprising:
a display area having a plurality of pixel units;
a peripheral area located at at least one side of the display area;
a barrier layer located on a base substrate;
a conductive member arranged at one side of the barrier layer facing away from the base substrate; a length of the conductive member in an extending direction of the conductive member being larger than a width of the conductive member in a direction intersecting with the extending direction; the conductive member comprising a first conductive sub-layer, a second conductive sub-layer and a third conductive sub-layer stacked in sequence; the first conductive sub-layer being closer to the base substrate than the third conductive sub-layer; and
a first conductive part, the first conductive part and the conductive member being arranged in a same layer and made of a same material,
wherein a conductivity of the first conductive sub-layer is smaller than that of the second conductive sub-layer, a thickness of the first conductive sub-layer is smaller than that of the second conductive sub-layer, and a melting point of the third conductive sub-layer is larger than that of the second conductive sub-layer,
wherein the second conductive sub-layer comprises a first surface close to the first conductive sub-layer and a second surface close to the third conductive sub-layer; the first surface and the second surface are arranged opposite to each other; the third conductive sub-layer protrudes from the second surface along a width direction of the conductive member; and the width direction intersects with the extending direction of the conductive member, and
wherein the first conductive part is located in the display area, and the conductive member is located in the peripheral area and is electrically connected to the first conductive part.

2. The display panel according to claim 1 , wherein the third conductive sub-layer is not in contact with the first conductive sub-layer.

3. The display panel according to claim 1 , wherein the second conductive sub-layer further comprises a side surface connecting a side edge of the first surface and a side edge of the second surface located at a same side of the second conductive sub-layer; in a cross section taken along a direction perpendicular to the extending direction of the conductive member, an intersection point between the side surface and the first conductive sub-layer is a first intersection point, an intersection point between the side surface and the third conductive sub-layer is a second intersection point, and at least part of the side surface is located at one side of a connecting line between the first intersection point and the second intersection point close to the second conductive sub-layer.

4. The display panel according to claim 3 , wherein the side surface comprises at least two side sub-surfaces, which comprise a first side sub-surface close to the first conductive sub-layer and a second side sub-surface close to the third conductive sub-layer, and an angle formed by the first side sub-surface and the first conductive sub-layer is smaller than an angle formed by the second side sub-surface and the first conductive sub-layer.

5. The display panel according to claim 4 , wherein in the cross section taken along the direction perpendicular to the extending direction of the conductive member, a distance from, an intersection point between an extension line of the second side sub-surface and the first conductive sub-layer, to, an intersection point between the first side sub-surface and the first conductive sub-layer, is d1; and a distance of the first conductive sub-layer extending beyond the first surface is Δw1, wherein d1<Δw1, and
a distance of the third conductive sub-layer extending beyond the second surface is Δw2, wherein d1<Δw2.

6. The display panel according to claim 3 , wherein the side surface comprises three side sub-surfaces arranged in sequence, comprising a first side sub-surface, a second side sub-surface and a third side sub-surface; the first side sub-surface is closer to the first conductive sub-layer than the third side sub-surface; an angle formed by the first side sub-surface and the first conductive sub-layer is a first angle; an angle formed by the second side sub-surface and the first conductive sub-layer is a second angle; an angle formed by the third side sub-surface and the first conductive sub-layer is a third angle; the third angle is larger than the second angle, and the second angle is larger than the first angle, or,
the second conductive sub-layer comprises two side surfaces, which are arranged opposite to each other and are symmetrically arranged along a thickness direction of the conductive member.

7. The display panel according to claim 3 , wherein at least one of the first surface, the second surface and the side surface of the second conductive sub-layer contains at least one of N element, S element, P element and Cl element.

8. The display panel according to claim 1 , wherein a width of the first surface is smaller than that of the first conductive sub-layer, a width of the second surface is smaller than that of the third conductive sub-layer, and a width difference between the third conductive sub-layer and the second surface is larger than a thickness of the third conductive sub-layer.

9. The display panel according to claim 1 , wherein two adjacent conductive members are provided, the two adjacent conductive members are insulated from each other and located in a same layer; the two adjacent conductive members comprise a first conductive member and a second conductive member; and a distance between the third conductive sub-layer of the first conductive member and the third conductive sub-layer of the second conductive member is smaller than a distance between the second surface of the second conductive sub-layer of the first conductive member and the second surface of the second conductive sub-layer of the second conductive member.

10. The display panel according to claim 9 , wherein the second surface of the first conductive member and the second surface of the second conductive member have different distances at different positions.

11. The display panel according to claim 9 , wherein w1 is a maximum width of the first conductive member in a cross section thereof along a width direction thereof, w2 is a maximum width of the second conductive member in a cross section thereof along a width direction thereof, Δw11 is a distance of the third conductive sub-layer extending beyond the second surface in the first conductive member, Δw12 is a distance of the third conductive sub-layer extending beyond the second surface in the second conductive member, dmin is a minimum distance between the first conductive member and the second conductive member; and a relational expression as below is satisfied:

Δ
⁢
w
⁢
11

w
⁢
1

+

Δ
⁢
w
⁢
12

w
⁢
2

<

Δ

Assignees

• Beijing Boe Technology Dev Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Xu Chen
• Qiao Yong
• Wu Xinyin
• Ma Yongda

Classifications

• H10K2102/311

  Flexible OLED · CPC title

• H10K77/111

  Flexible substrates · CPC title

• H10K59/121

  characterised by the geometry or disposition of pixel elements · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title