Display Module and Display Device

Patent metadata

Field	Value
Publication number	US-2024276801-A1
Application number	US-202218023380-A
Country	US
Kind code	A1
Filing date	Mar 30, 2022
Priority date	Mar 30, 2022
Publication date	Aug 15, 2024
Grant date	—

Abstract

A display module is provided, which includes a circuit board and a display substrate disposed on a first surface of the circuit board, the first surface of the circuit board comprises a flat area and an non-flat area located at a periphery of the flat area, the display substrate is disposed in the flat area, and the non-flat area is provided with electronic components.

First claim

1 . A display module, comprising a circuit board and a display substrate disposed on a first surface of the circuit board, wherein the first surface of the circuit board comprises a flat area and an non-flat area located at a periphery of the flat area, the display substrate is disposed in the flat area, and the non-flat area is provided with electronic components.

2 . The display module according to claim 1 , wherein in a direction perpendicular to the display substrate, heights of the electronic components are lower than a height of a surface of the display substrate facing away from the circuit board.

3 . The display module according to claim 1 , wherein the display substrate comprises a display area and a non-display area located at a periphery of the display area; in a plane parallel to the display substrate, a distance between an edge of the circuit board and an edge of the display substrate is greater than a width of the non-display area.

4 . The display module according to claim 1 , further comprising a plastic frame disposed on the first surface of the circuit board and covering the non-flat area.

5 . The display module according to claim 4 , wherein the display substrate comprises a display area and a non-display area located at a periphery of the display area; the plastic frame also covers the non-display area of the display substrate and exposes the display area.

6 . The display module according to claim 5 , wherein the non-display area comprises a bonding area located at a side of the display area, and the bonding area is provided with a first pad; a second pad is disposed at a position in the non-flat region close to the bonding area, and the first pad is connected with the second pad through a metal line; the plastic frame also covers the metal line.

7 . The display module according to claim 6 , wherein the first pad is disposed to be close to a first side edge of the display substrate, and the second pad is disposed to be close to a first side edge of the circuit board, and a distance between the first side edge of the circuit board and the first side edge of the display substrate is greater than a distance between remaining side edges of the circuit board and corresponding side edges of the display substrate.

8 . The display module according to claim 6 , wherein a test pad is disposed on a surface of the circuit board facing away from the display substrate at a position corresponding to the bonding area, and the bonding area is further provided with a third pad connected with the test pad.

9 . The display module according to claim 1 , further comprising a plastic frame disposed on the first surface of the circuit board and a cover plate disposed on a surface of the display substrate facing away from the circuit board;
wherein the display substrate comprises a display area and a non-display area located at a periphery of the display area, and the cover plate completely covers the display area; the plastic frame comprises a frame plate provided with an opening and a first annular support portion disposed on a first side surface of the frame plate and disposed along a circumferential edge of the frame plate away from the opening; the first annular support portion is fixed on a portion of the first surface of the circuit board close to the circumferential edge, and a portion of the first side surface of the frame plate close to the opening is supported on the cover plate, and an orthographic projection of the opening on the circuit board contains an orthographic projection of the display area on the circuit board.

10 . The display module according to claim 9 , wherein a second annular support portion is provided on the first side surface of the frame plate along a circumferential edge of the opening, and the second annular support portion is supported on the cover plate.

11 . The display module according to claim 10 , wherein the non-display area comprises a bonding area located at a side of the display area, and the bonding area is provided with a first pad; a second pad is disposed at a position of the non-flat region close to the bonding area, and the first pad is connected with the second pad through a metal line;
the cover plate exposes the first pad, a circumferential edge of the cover plate protrudes from a circumferential edge of the display area, and a circumferential edge of the display substrate protrudes from the circumferential edge of the cover plate; and the second annular support portion is supported on a portion of the cover plate close to the circumferential edge of the cover plate and on the non-display area of the display substrate except the bonding area.

12 . The display module according to claim 9 , wherein an end face of the first annular support portion away from the frame plate is fixed on the circuit board through a fixing glue.

13 . The display module according to claim 10 , wherein a glue is filled between the first side surface of the frame plate and the circuit board, and the glue fixes the plastic frame to the circuit board.

14 . The display module according to claim 9 , wherein an orthographic projection of the cover plate on the circuit board contains the orthographic projection of the opening on the circuit board.

15 . The display module according to claim 9 , wherein a circumferential contour shape and a size of the plastic frame are the same as a contour shape and a size of the circuit board.

16 . The display module according to claim 10 , wherein a surface of the display substrate facing the circuit board is fixed to the circuit board by an adhesive layer, and a height of the second annular support portion is greater than a thickness of the adhesive layer.

17 . The display module according to claim 9 , wherein the plastic frame is made of polycarbonate or acrylonitrile-butadiene-styrene copolymer.

18 . The display module according to claim 9 , wherein the non-display area comprises a bonding area located at a side of the display area, and the bonding area is bonded and connected to the circuit board.
a circumferential edge of the cover plate protrudes from a circumferential edge of the display area; a side edge of the bonding area away from the display area protrudes from a corresponding side edge of the cover plate, and remaining side edges of the display substrate protrude from or are flush with corresponding side edges of the cover plate.

19 . The display module according to claim 1 , wherein a surface of circuit board facing away from the display panel is provided with a connector, and the connector is configured to be connected with an external driving device.

20 . A display device, comprising the display module according to claim 1 .

Assignees

• Boe Technology Group Co Ltd
• Yunnan Invensight Optoelectronics Technology Co Ltd

Inventors

• Wei Junbo
• Yang Shengji
• Lu Pengcheng
• Huang Kuanta
• Tian Yuanlan

Classifications

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/872 Primary

  Containers · CPC title

• H05K1/00

  Printed circuits · CPC title