Method of manufacturing tiled display screen, and tiled display screen

Patent metadata

Field	Value
Publication number	US-12349301-B2
Application number	US-202117912387-A
Country	US
Kind code	B2
Filing date	Nov 9, 2021
Priority date	Feb 26, 2021
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

Provided are method of manufacturing tiled display screen, and tiled display screen. The method includes: providing display panels, each display panel includes a first frame area at the periphery of a display area and a reserved cutting frame area at the periphery of the first frame area; attaching a protective cover plate to the display panel to form a sub-display module, the protective cover plate includes a second frame area at the periphery of the display area, a frame width of the first frame area is greater than or equal to that of the second frame area; performing a second cutting on the sub-display module, with a cutting line being a boundary line between the first frame area and the reserved cutting frame area, and removing the reserved cutting frame area to obtain a sub-display screen; and tiling sub-display screens.

First claim

What is claimed is:

1. A method of manufacturing a tiled display screen, comprising:
providing a parent panel, and performing a first cutting on the parent panel to obtain a plurality of display panels, wherein each of the plurality of display panels comprises a first frame area at the periphery of a display area and a reserved cutting frame area at the periphery of the first frame area;
performing following operations on each of the plurality of display panels to obtain a plurality of sub-display screens:
providing a protective cover plate;
attaching the protective cover plate onto a top surface of the display panel to form a display sub-module, wherein the protective cover plate comprises a second frame area at the periphery of the display area, and a frame width of the first frame area is greater than a frame width of the second frame area; wherein the frame width of the first frame area is 0.2 mm to 1.0 mm greater than the frame width of the second frame area;
performing a second cutting on the display sub-module, with a cutting line of the second cutting being a boundary line between the first frame area and the reserved cutting frame area, and removing the reserved cutting frame area to obtain the sub-display screen; and

tiling the plurality of sub-display screens each including the obtained sub-display screen to obtain the tiled display screen.

2. The method of manufacturing the tiled display screen according to claim 1 , wherein,
after the attaching the protective cover plate onto a top surface of the display panel to form a display sub-module, and before the performing a second cutting on the display sub-module, the method further comprises:
coating a first region, the reserved cutting frame area and a side face of an edge of the protective cover plate with an adhesive to form an adhesive coating layer, and curing the adhesive coating layer, wherein the first frame area of the display panel comprises the first region which exceeds the edge of the protective cover plate at a side face facing towards the protective cover plate.

3. The method of manufacturing the tiled display screen according to claim 2 ,
wherein,
the performing a second cutting on the display sub-module, with a cutting line of the second cutting being a boundary line between the first frame area and the reserved cutting frame area, and removing the reserved cutting frame area to obtain a sub-display screen, comprises:
performing one-shot cutting on the display panel and the cured adhesive coating layer to remove the reserved cutting frame area and a part of the adhesive coating layer corresponding to the reserved cutting frame area, so as to obtain the sub-display screen, wherein an outer edge of the adhesive coating layer obtained after the second cutting is performed is flush with an outer edge of the first frame area of the display panel.

4. The method of manufacturing the tiled display screen according to claim 1 , wherein,
after the performing a second cutting on the display sub-module, and before the tiling a plurality of sub-display screens, the method further comprises:
coating a first region, a side face of an outer edge of the protective cover plate and a side face of an outer frame of the display panel with an adhesive to form an adhesive coating layer, and curing the adhesive coating layer, where the first frame area of the display panel comprises the first region which exceeds an edge of the protective cover plate at a side face facing towards the protective cover plate.

5. A tiled display screen, comprising: at least two sub-display screens tiled to one another, wherein each sub-display screen comprises a display panel and a protective cover plate attached onto a top surface of the display panel, each sub-display screen comprises a display area, the display panel comprises a first frame area at the periphery of the display area, and the protective cover plate comprises a second frame area at the periphery of the display area; wherein a frame width of the first frame area is greater than a frame width of the second frame area; wherein the frame width of the first frame area is 0.2 mm to 1.0 mm greater than the frame width of the second frame area.

6. The tiled display screen according to claim 5 , wherein,
the first frame area of the display panel comprises a first region exceeding an edge of the protective cover plate at a side face facing towards the protective cover plate, and the first region and a side face of the edge of the protective cover plate is coated with an adhesive coating layer.

7. The tiled display screen according to claim 6 , wherein,
a side face of an outer edge of the adhesive coating layer is flush with a side face of an outer edge of the first frame area of the display panel; or, the adhesive coating layer is further coated on a side face of an outer edge of the display panel.

8. The tiled display screen according to claim 5 , wherein,
a width D of a seam between the at least two sub-display screens that are tiled to one another meets: D=D1+D2+DΔ, wherein D1 is a frame width of a first frame area in one of two adjacent sub-display panels; D2 is a frame width of a first frame area of the other one of the two adjacent sub-display panels; DΔ is a tolerance for a tiled assembly of the two adjacent sub-display screens.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Gao Meiling

Classifications

• H05K5/03

  Covers · CPC title

• H05K5/30 Primary

  Side-by-side or stacked arrangements · CPC title

• G09F9/3026 Primary

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

• G09F9/302 Primary

  characterised by the form or geometrical disposition of the individual elements · CPC title