Display device

Patent metadata

Field	Value
Publication number	US-12514043-B2
Application number	US-202217759204-A
Country	US
Kind code	B2
Filing date	Jun 6, 2022
Priority date	May 25, 2022
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A display device is disclosed and includes: a luminescent substrate, wherein the luminescent substrate includes a substrate, a first conductive part, and a luminescent device, and the first conductive part is disposed on a second surface of the substrate; and a driving substrate, wherein a surface of the driving substrate close to the luminescent substrate is provided with a second conductive part connected to the first conductive part. One of the first conductive part or the second conductive part includes a line-shaped recess. The other one of the first conductive part or the second conductive part includes a dot-shaped protrusion. The dot-shaped protrusion is defined in the line-shaped recess.

First claim

What is claimed is:

1 . A display device, comprising:
a luminescent substrate, wherein the luminescent substrate comprises a substrate, a plurality of first conductive parts, and a plurality of luminescent devices, the substrate comprises a first surface and a second surface opposite to the first surface, the luminescent devices are disposed on the first surface of the substrate, the first conductive parts are spaced apart from each other and are disposed on the second surface of the substrate, the first conductive parts are electrically connected to the luminescent devices, and the substrate is a flexible substrate; and a driving substrate, wherein the driving substrate is disposed on a backside of a light-emitting surface of the luminescent substrate, a surface of the driving substrate close to the luminescent substrate is provided with a driving circuit and a plurality of second conductive parts connected to the driving circuit and spaced apart from each other, and the second conductive parts are connected to the first conductive parts; wherein one of the first conductive parts or the second conductive parts comprise a line-shaped recess, the other one of the first conductive parts or the second conductive parts comprise a dot-shaped protrusion, the dot-shaped protrusion is defined in the line-shaped recess, and a gap is defined between the dot-shaped protrusion and a lateral wall of the line-shaped recess extending along an extension direction of the line-shaped recess.

2 . The display device of claim 1 , wherein the line-shaped recess extends along a single direction.

3 . The display device of claim 2 , wherein the plurality of luminescent substrates are spliced to each other, and the plurality of line-shaped recesses have a same extension direction.

4 . The display device of claim 1 , wherein the line-shaped recess comprises a first line-shaped recess and a second line-shaped recess intersecting with the first line-shaped recess, the first line-shaped recess extends along a first direction, the second line-shaped recess extends along a second direction, and the first direction intersects the second direction.

5 . The display device of claim 4 , wherein the first line-shaped recess and the second line-shaped recess intersect each other and form an X shape, a crisscross shape, or a T shape.

6 . The display device of claim 1 , wherein one of the first conductive parts or the second conductive parts comprise a frame body and a conductive layer, at least part of the conductive layer is formed on a bottom of an opening of the frame body, and the opening and the conductive layer disposed in the opening form the line-shaped recess.

7 . A display device, comprising:
a luminescent substrate, wherein the luminescent substrate comprises a substrate, a plurality of first conductive parts, and a plurality of luminescent devices, the substrate comprises a first surface and a second surface opposite to the first surface, the luminescent devices are disposed on the first surface of the substrate, the first conductive parts are spaced apart from each other and are disposed on the second surface of the substrate, the first conductive parts are electrically connected to the luminescent devices, and the substrate is a flexible substrate; a driving substrate, wherein the driving substrate is disposed on a backside of a light-emitting surface of the luminescent substrate, a surface of the driving substrate close to the luminescent substrate is provided with a driving circuit and a plurality of second conductive parts connected to the driving circuit and spaced apart from each other, and the second conductive parts are connected to the first conductive parts; wherein one of the first conductive parts or the second conductive parts comprise a line-shaped recess, the other one of the first conductive parts or the second conductive parts comprise a dot-shaped protrusion, and the dot-shaped protrusion is defined in the line-shaped recess.

8 . The display device of claim 7 , wherein the line-shaped recess extends along a single direction.

9 . The display device of claim 8 , wherein the plurality of luminescent substrates are spliced to each other, and the plurality of line-shaped recesses have a same extension direction.

10 . The display device of claim 7 , wherein the line-shaped recess comprises a first line-shaped recess and a second line-shaped recess intersecting with the first line-shaped recess, the first line-shaped recess extends along a first direction, the second line-shaped recess extends along a second direction, and the first direction intersects the second direction.

11 . The display device of claim 10 , wherein the plurality of luminescent substrates are spliced to each other along a third direction, and one of the first direction or the second direction is parallel to the third direction.

12 . The display device of claim 10 , wherein the plurality of luminescent substrates are spliced to each other along a third direction and a fourth direction, the third direction intersects the fourth direction, the third direction is parallel to the first direction, and the fourth direction is parallel to the second direction.

13 . The display device of claim 10 , wherein the plurality of luminescent substrates are spliced to each other along a third direction and a fourth direction, the third direction intersects the fourth direction, the first direction intersects both the third direction and the fourth direction, and the second direction intersects both the third direction and the fourth direction.

14 . The display device of claim 10 , wherein the first line-shaped recess and the second line-shaped recess intersect each other and form an X shape, a crisscross shape, or a T shape.

15 . The display device of claim 7 , wherein one of the first conductive parts or the second conductive parts comprise a frame body and a conductive layer, at least part of the conductive layer is formed on a bottom of an opening of the frame body, and the opening and the conductive layer disposed in the opening form the line-shaped recess.

16 . The display device of claim 15 , wherein material of the frame body comprises organic material, material of the conductive layer comprises metal or transparent conductive material, and material of dot-shaped protrusion comprises organic conductive material.

17 . The display device of claim 7 , wherein a height of the dot-shaped protrusion is greater than or equal to 10 μm and is less than or equal to 100 μm, a depth of the line-shaped recess is greater than or equal to 10 μm or is less than or equal to 100 μm.

18 . The display device of claim 7 , wherein a size of the line-shaped recess along an extension direction of the line-shaped recess is greater than or equal to 50 μm or is less than or equal to 200 μm.

19 . The display device of claim 7 , wherein the substrate is a flexible substrate.

20 . The display device of claim 7 , wherein a gap is defined between the dot-shaped protrusion and a lateral wall of the line-shaped recess extending along an extension direction of the line-shaped recess.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Luo Wei
• Jiang Yingchuan
• Xianyu Wenxu

Classifications

• H10W90/00

  Package configurations · CPC title

• H10H20/857 Primary

  Interconnections, e.g. lead-frames, bond wires or solder balls · CPC title

• H10K50/805

  Electrodes · CPC title

• H01L25/167

  Electricity · mapped topic