Display screen and method of manufacturing thereof

Patent metadata

Field	Value
Publication number	US-11296301-B2
Application number	US-201916340694-A
Country	US
Kind code	B2
Filing date	Jan 11, 2019
Priority date	May 11, 2018
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

The present disclosure relates to display screens and manufacturing methods of display screens. The display screen includes a packaged component, a non-display area including an effective package area adjacent to the packaged component, and a package shadow area located at a periphery of the effective package area. The package shadow area includes a supporting substrate defining a groove for disconnecting a thin film package structure formed on the support substrate. The thin film package structure is disconnected at the groove.

First claim

The invention claimed is:

1. A display screen, comprising:
a packaged component;
an effective package area positioned adjacent to the packaged component; and
a package shadow area, located at a periphery of the effective package area, the package shadow area comprising a supporting substrate defining at least a first groove for disconnecting a thin film package structure;
wherein the thin film package structure is formed on the supporting substrate, and the thin film package structure is disconnected at the first groove.

2. The display screen according to claim 1 , wherein the supporting substrate further defines a second groove, and the first groove and the second groove being arranged in parallel.

3. The display screen according to claim 2 , wherein opening widths of the first groove and the second grooves are substantially same, and a ratio of the opening width of each groove, to a distance between the two grooves, to a width of the package shadow area are 0.8˜1.2:0.8˜1.2:2.5˜3.5.

4. The display screen according to claim 2 , wherein the distance between the two grooves ranges from 50 μm to 60 μm, depths of the grooves in the supporting substrate range from 4 μm to 8 μm, and the opening widths of the grooves range from 50 μm to 60 μm.

5. The display screen according to claim 1 , wherein a cross-sectional shape of the first groove along a direction perpendicular to a surface of the supporting substrate is a trapezoidal shape, and an inner angle of the trapezoid is greater than 45° and less than 90°.

6. The display screen according to claim 1 , wherein the thin film package structure comprises a plurality of film layers sealed outside of the packaged component, the plurality of film layers has a non-display area; the plurality of film layers comprises:
at least one organic thin film layer;
at least one inorganic thin film layer stacked with the organic thin film layer; and
a third thin film layer located in the non-display area, the third thin film layer being formed on the plurality of film layers and covers a first end of the plurality of film layers, the first end being located at a side opposite to another side where the packaged component is located.

7. The display screen according to claim 6 , wherein a thickness of the third thin film layer ranges 0.5 μm to 6 μm, and/or a width of the third thin film layer ranges from 0.02 mm to 1.2 mm.

8. The display screen according to claim 6 , further comprising:
an array substrate, the packaged component being disposed on the array substrate,
wherein the array substrate comprises a first dam portion to block flowable organic material when forming the organic thin film layer of the thin film package structure, and the third thin film layer is located at a side of the first dam portion opposite to another side where the packaged component is located.

9. The display panel according to claim 8 , wherein the array substrate further comprises a second dam portion to block the flowable organic material when forming the organic thin layer of the thin film package structure, and the first dam portion and the second dam portion are sequentially disposed along a direction toward the packaged component.

10. The display screen according to claim 9 , wherein the third thin film layer is further filled between the first dam portion and the second dam portion, and a thickness of the thin film package structure at a position corresponding to the first dam portion is equal to a thickness of the thin film package structure at a position corresponding to the third thin film layer.

11. The display screen according to claim 1 , wherein the display screen defines a notch, the display screen includes a display area, and the notch is located at an outside of the display area, the display screen further comprises a heat-insulating film layer, the thin film package structure at least covers the display area, and the heat-insulating film layer is disposed on the display screen including the thin film package structure, and the heat-insulating film layer is located adjacent to the notch.

12. The display screen according to claim 11 , wherein the heat-insulating film layer is directly disposed on an upper surface of the thin film package structure, the notch and the display area have a package reservation area provided therebetween, the thin film package structure covers the package reservation area, and the heat-insulation film layer covers the thin film package structure located within the package reservation area.

13. The display screen according to claim 12 , wherein the heat-insulating film layer and the thin film package structure within the package reservation area are both of stepped configurations, and the stepped configurations are disposed along a direction from the display area to the notch.

14. The display screen according to claim 13 , wherein the package reservation area further comprises a Thin Film Transistor array substrate, and the heat-insulation film layer within the package reservation area extends from the display area to the Thin Film Transistor array substrate located at the notch.

15. The display screen according to claim 14 , wherein the thin film package structure is in direct contact with the Thin Film Transistor array substrate within the package reservation area.

16. The display screen according to claim 15 , wherein the Thin Film Transistor array substrate within the package reservation area is provided with a gap at a position adjacent to the notch, and the thin film package structure covers the Thin Film Transistor array substrate and fills the gap.

17. The display screen according to claim 16 , wherein the gap is provided on a thin film transistor layer on the Thin Film Transistor array substrate.

18. A method of manufacturing display screen comprises:
providing a supporting substrate base having a non-display area, the non-display area comprising an effective package area adjacent to a packaged component, and a package shadow area located at a periphery of the effective package area;
forming a groove in the package shadow area of the supporting substrate base for disconnecting a thin film package structure, to obtain a supporting substrate;
disposing a film layer structure on the supporting substrate and then removing the film layer structure in the package shadow area to expose the groove, to obtain an array substrate; and
forming the thin film package structure on the array substrate, and disconnecting the thin film package structure at the groove, to obtain a display screen.

19. The method according to claim 18 , wherein the forming a groove in the supporting substrate base for disconnecting a thin film package structure comprises: exposing and developing the supporting substrate base to define the groove on the supporting substrate base for disconnecting the thin film package structure; and the removing the film layer structure in the package shadow area comprises removing the film layer structure in the package shadow area by photolithography.

20. The method according to claim 19 , wherein the display screen comprises a display area and a notched area located at an outside of the display area;
the manufacturing method further comprises:
covering the display area with the thin film package structure;
disposing a heat-insulating layer on the display screen including the thin film package structure at a position adjacent to the notched area; and
forming a notch in the notched area.

Assignees

• Yungu Gu An Tech Co Ltd
• Kunshan Govisionox Optoelectronics Co Ltd
• Yungu Guan Tech Co Ltd

Inventors

• Li Yao
• Chen Chuang
• Gu Weijie
• Yu Fengzhi
• Li Jin
• Zou Min
• Hu Xiaoxu

Classifications

• H10K59/8794

  Arrangements for heating and cooling · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/0097

  Electricity · mapped topic