Display panel, display module, and display device

Patent metadata

Field	Value
Publication number	US-11424227-B2
Application number	US-201916619482-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Jul 15, 2019
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

The present invention provides a display panel, a display module, and a display device. The display panel includes a substrate and micro-LEDs. The display module achieves an extremely-narrow-bezel design by attaching a support plate to one side of a flexible drive circuit board of the display panel, bending a bending region, and attaching a bonding region to another side of the support plate. Multiple display modules are arranged in a accommodating chamber defined by a back plate of the display device and are fixed and joined to each other. Accordingly, a narrow-gap joining technology for micro-LED is realized, thus solving a problem that the micro-LED is too small in size, and realizing large-sized micro-LED displays.

First claim

What is claimed is:

1. A display module, comprising:
a support plate in an integral form;
a display panel comprising a flexible drive circuit board and a plurality of micro light-emitting-diodes (micro-LEDs) bonded inside a display region of the flexible drive circuit board, wherein the support plate is attached to the flexible drive circuit board within the display region, wherein by bending of a bending region of the flexible drive circuit board, a bonding region of the flexible drive circuit board is disposed on another side of the support plate, wherein the bending region of the flexible drive circuit board is bent along a lateral side of the support plate, and wherein a distance from a center of one row of the micro-LEDs closest to the bending region to an outermost side edge of the display module is less than half a distance between each two adjacent micro-LEDs in the display region; and
a drive unit disposed in the bonding region of the flexible drive circuit board and bonded to the display panel.

2. The display module according to claim 1 , wherein the support plate is made of one of glass, polyimide, polyethylene terephthalate, and poly-aluminum chloride.

3. The display module according to claim 1 , wherein a size of the support plate is smaller than a size of the display region of the display panel.

4. The display module according to claim 1 , wherein a size of the support plate is the same as a size of the display region of the display panel.

5. The display module according to claim 1 , wherein the bending region comprises a first bending region and a second bending region, and the first bending region and the second bending region are in contact with the display region and arranged at two opposite sides of the display region.

6. The display module according to claim 1 , wherein the bending region is disposed at one side of the display region and in contact with the display region.

7. The display module according to claim 1 , wherein the bending region of the display panel is in contact with a side edge of the support plate.

8. The display module according to claim 1 , wherein the display panel further comprises an encapsulation layer.

9. The display module according to claim 1 , wherein the flexible drive circuit board further comprises a flexible base substrate and a thin film transistor (TFT) layer, and the drive circuit is constituted by TFTs of the TFT layer.

10. The display module according to claim 1 , wherein the flexible base substrate is made of polyimide or polyethylene terephthalate.

11. The display module according to claim 1 , wherein the flexible base substrate has a thickness ranging from 10 μm to 30 μm.

12. A display device, comprising:
a back plate defining an accommodating chamber; and
at least two display modules of claim 1 , wherein the at least two display modules are coupled to each other in the accommodating chamber.

13. The display device according to claim 12 , wherein a size of the support plate is smaller than or a same as a size of the display region of the display panel.

14. The display device according to claim 12 , wherein the bending region comprises a first bending region and a second bending region in contact with the display region and arranged at two opposite sides of the display region, or the bending region is disposed at one side of the display region and in contact with the display region.

15. The display device according to claim 12 , wherein the bending region of the display panel is in contact with a side edge of the support plate.

16. The display device according to claim 12 , wherein the display panel further comprises an encapsulation layer, the flexible drive circuit board further comprises a flexible base substrate and a thin film transistor (TFT) layer, and the drive circuit is constituted by TFTs of the TFT layer.

Assignees

• Shenzhen China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Liu Minggang
• Fan Yong

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10D86/411

  characterised by materials, geometry or structure of the substrates · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10H20/857

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

• G09F9/3026

  Video wall, i.e. stackable semiconductor matrix display modules (video wall control systems G06F3/1446, G09G2300/026) · CPC title