Mask plates and display panels

Patent metadata

Field	Value
Publication number	US-11066738-B2
Application number	US-201916686219-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Mar 30, 2018
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

The present application relates to a display panel and a mask plate for fabricating a display panel. The mask plate for fabricating a display panel includes: a first surface; a second surface opposite to the first surface; and a plurality of through holes spaced apart from each other. The through hole has a first opening formed on the first surface, and a second opening formed on the second surface. An area of the second opening is larger than an area of the first opening. The second openings are arranged in parallel in a first predetermined direction. The first predetermined direction has a predetermined angle with respect to a horizontal direction or a vertical direction of the mask plate, and the predetermined angle does not include 90°.

First claim

The invention claimed is:

1. A mask plate for fabricating a display panel, comprising:
a first surface;
a second surface opposite to the first surface;
a plurality of through holes being spatially separated, the plurality of through holes including a first through hole having a first opening formed on the first surface and a second opening formed on the second surface, an area of the second opening being larger than an area of the first opening, the second openings being arranged in parallel in a first predetermined direction, the first predetermined direction having a predetermined angle with respect to a horizontal direction or a vertical direction of the mask plate, the horizontal direction being referred to as an x direction, the vertical direction being referred to as a y direction, the predetermined angle excluding 90°;
a first connecting bridge provided between the first openings, and configured to support the first surface;
a second connecting bridge provided between the second openings, and configured to support the second surface;
wherein an area of the second connecting bridge is smaller than an area of the first connecting bridge; and
wherein the predetermined angle is configured to increase the area of the second connecting bridge for strengthening the mask plate.

2. The mask plate of claim 1 , wherein the second opening is an axisymmetric polygon, and at least one symmetry axis of the second opening is parallel to the first predetermined direction.

3. The mask plate of claim 2 , wherein the second opening is rectangular; the second opening has a first symmetry axis and a second symmetry axis perpendicular to the first symmetry axis; the first symmetry axis of the second opening is parallel to the first predetermined direction, or the second symmetry axis of the second opening is parallel to the first predetermined direction.

4. The mask plate of claim 1 , wherein a geometric centerline of the first opening coincides with a geometric centerline of the second opening.

5. The mask plate of claim 4 , wherein the first opening is located within a range of a projection of the second opening on a plane of the mask plate.

6. The mask plate of claim 1 , wherein the first opening is a polygon same to the shape of the second opening and is reduced in proportion to a preset size.

7. The mask plate of claim 1 , wherein the first opening has a different shape from the second opening.

8. The mask plate of claim 1 , wherein a range of the predetermined angle is from 45° to 135°.

9. The mask plate of claim 1 , further comprising:
a first connecting bridge provided between the first openings and supporting the first surface, and
a second connecting bridge provided between the second openings, and supporting the second surface,
an area of the second connecting bridge being smaller than an area of the first connecting bridge.

10. The mask plate of claim 1 , wherein the first openings are arranged in parallel in a second predetermined direction, and the second predetermined direction is different from the first predetermined direction.

11. The mask plate of claim 1 , wherein at least a portion of the first openings are arranged in parallel in the first predetermined direction.

12. The mask plate of claim 1 , wherein the first openings are arranged in parallel in the first predetermined direction.

13. The mask plate of claim 1 , wherein the first opening on the first surface is prepared by etching the first surface toward the second surface, and the second opening on the second surface is prepared by etching the second surface toward the first surface.

14. A display panel, comprising: a display substrate and pixels arranged in an array on the display substrate; and the pixels are fabricated from a mask plate comprising:
a first surface;
a second surface opposite to the first surface; and
a plurality of through holes being spatially separated, the plurality of through holes including a first through holes having a first opening formed on the first surface, and a second opening formed on the second surface, an area of the second opening being larger than an area of the first opening, the second openings being arranged in parallel in a first predetermined direction, the first predetermined direction having a predetermined angle with respect to a horizontal direction or a vertical direction of the mask plate, the horizontal direction being referred to as an x direction, the vertical direction being referred to as a y direction;
a first connecting bridge provided between the first openings, and configured to support the first surface;
a second connecting bridge provided between the second openings, and configured to support the second surface;
wherein an area of the second connecting bridge is smaller than an area of the first connecting bridge;
wherein the predetermined angle is configured to increase the area of the second connecting bridge for strengthening the mask plate; and
wherein the predetermined angle does not include 90°.

15. The display panel of claim 14 , wherein the pixels are configured in a pixel-shared arrangement.

16. The display panel of claim 14 , wherein the second openings are arranged along a substantially diagonal direction, and the second connecting bridge is configured in a regular distribution.

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Liu Mingxing
• Wang Xuliang
• Gan Shuaiyan
• Gao Feng
• Lv Dongyun

Classifications

• C23C14/042 Primary

  using masks · CPC title

• Y10T428/24802

  Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] · CPC title

• B32B3/00

  Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form · CPC title

• H10K71/166

  using selective deposition, e.g. using a mask · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title