OLED display substrate, display panel and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11094895-B2
Application number	US-201916621477-A
Country	US
Kind code	B2
Filing date	May 24, 2019
Priority date	May 24, 2018
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

An OLED display substrate, an OLED display panel and manufacturing methods thereof are provided. The OLED display substrate includes a substrate including a main display region, plural side display regions outside plural edges of the main display region, respectively, and plural corner display regions outside every two adjacent edges of the main display region and around intersections of the every two adjacent edges, respectively; and plural display elements on the main display region, the plural side display regions, and the plural corner display regions of the substrate, respectively. At least the plural corner display regions of the substrate are made of a flexible material, plural openings are provided in each of the plural corner display regions, and each opening in each corner display region does not overlap any one of the display elements on the corner display region.

First claim

What is claimed is:

1. An OLED display substrate, comprising:
a substrate comprising a main display region, a plurality of side display regions outside a plurality of edges of the main display region, respectively, and a plurality of corner display regions outside every two adjacent edges of the main display region and around intersections of the every two adjacent edges, respectively; and
a plurality of display elements on the main display region, the plurality of side display regions, and the plurality of corner display regions of the substrate, respectively;
wherein at least the plurality of corner display regions of the substrate are made of a flexible material, a plurality of openings are provided in each of the plurality of corner display regions, and each opening in each corner display region does not overlap any one of the display elements on the corner display region; and
wherein a quantity of the openings in each corner display region of the substrate decreases in a direction from an edge of the substrate to a center of the substrate.

2. The OLED display substrate of claim 1 , wherein the substrate is a flexible substrate.

3. The OLED display substrate of claim 2 , wherein the substrate is provided with first rigid skeletons between the main display region and each of the side display regions and between the main display region and each of the corner display regions, respectively, to support the flexible substrate.

4. The OLED display substrate of claim 2 , wherein a second rigid skeleton, which is stretchable or compressible as an area of each of the openings of the substrate increases or decreases, is provided at a periphery of the opening.

5. The OLED display substrate of claim 3 , wherein each of the first rigid skeletons is a rigid arc plate or a rigid arc strip.

6. The OLED display substrate of claim 4 , wherein the second rigid skeleton is a rigid hexagonal frame.

7. The OLED display substrate of claim 3 , wherein each first rigid skeleton or each second rigid skeleton is a rigid skeleton formed by hardening a flexible material of a portion of the substrate corresponding to the first rigid skeleton or the second rigid skeleton.

8. An OLED display substrate, comprising:
a substrate comprising a main display region, a plurality of side display regions outside a plurality of edges of the main display region, respectively, and a plurality of corner display regions outside every two adjacent edges of the main display region and around intersections of the every two adjacent edges, respectively; and
a plurality of display elements on the main display region, the plurality of side display regions, and the plurality of corner display regions of the substrate, respectively;
wherein at least the plurality of corner display regions of the substrate are made of a flexible material, a plurality of openings are provided in each of the plurality of corner display regions, and each opening in each corner display region does not overlap any one of the display elements on the corner display region; and
the OLED display substrate further comprises a protrusion at an edge of each of the openings on the substrate.

9. The OLED display substrate of claim 8 , further comprising electric wiring on the substrate, and the electric wiring is arranged around a periphery of the protrusion so as not to overlap any one of the openings.

10. The OLED display substrate of claim 8 , wherein each of the display elements comprises a pixel defining layer, and the protrusion is disposed in the same layer as the pixel defining layer.

11. The OLED display substrate of claim 1 , wherein the plurality of openings in each of the corner display regions are arranged to be axisymmetric with respect to an axis of the corner display region, and the axis passes through a vertex corresponding to the corner display region and a center of the main display region.

12. An OLED display substrate, comprising:
a substrate comprising a main display region, a plurality of side display regions outside a plurality of edges of the main display region, respectively, and a plurality of corner display regions outside every two adjacent edges of the main display region and around intersections of the every two adjacent edges, respectively; and
a plurality of display elements on the main display region, the plurality of side display regions, and the plurality of corner display regions of the substrate, respectively;
wherein at least the plurality of corner display regions of the substrate are made of a flexible material, a plurality of openings are provided in each of the plurality of corner display regions, and each opening in each corner display region does not overlap any one of the display elements on the corner display region; and
wherein the plurality of openings in each of the corner display regions are arranged in a plurality of rows, and any two adjacent rows of openings are arranged in staggered positions.

13. The OLED display substrate of claim 1 , wherein each of the openings is elliptic, rectangular, long strip shaped, triangular, or trapezoidal.

14. The OLED display substrate of claim 13 , wherein in a case where each of the openings is rectangular, long strip shaped, triangular, or trapezoidal, each corner of each of the openings is a rounded corner.

15. The OLED display substrate of claim 14 , wherein in a case where each of the openings is long strip shaped, both ends of the opening are provided with rounded corners, respectively, such that the rounded corner at each end of the opening has a diameter greater than that of a central portion of the opening.

16. A method for manufacturing an OLED display substrate, wherein the OLED display substrate is the OLED display substrate of claim 1 , and the method comprises:
forming the plurality of openings in each of the corner display regions of the substrate; and
disposing the plurality of display elements at positions on the substrate other than the plurality of openings, respectively.

17. An OLED display panel, comprising an OLED display substrate and a cover plate disposed opposite to each other, wherein the OLED display substrate is the OLED display substrate of claim 1 .

18. The OLED display panel of claim 17 , wherein the cover plate is a rigid cover plate having a plurality of sub-cover plates including a main sub-cover plate as a plane corresponding to the main display region, side sub-cover plates corresponding to the side display regions, respectively, and corner sub-cover plates corresponding to the corner display regions, respectively; wherein an outer surface of the main sub-cover plate is not parallel to an outer surface of each side sub-cover plate or an outer surface of each corner sub-cover plate.

19. A method for manufacturing an OLED display panel, wherein the OLED display panel comprises the OLED display substrate of claim 1 , and the method comprises:
bending each side display region of the OLED display substrate relative to the main display region so as to attach the OLED display substrate to a cover plate, such that areas of the plurality of openings are reduced after the plurality of openings are compressed.

20. An OLED display panel, comprising an OLED display substrate and a cover plate disposed opposite to each other, wherein the OLED display substrate is the OLED display substrate of claim 8 .

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Dai Weinan

Classifications

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• H10K77/111

  Flexible substrates · CPC title

• H10K59/179 Primary

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

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/56

  Electricity · mapped topic