# US 2021/0280644 A1 · Pixel layout structure, metal mask, and display apparatus

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- Number: US 2021/0280644 A1
- Document ID: US20210280644A1
- Status: Published application
- Kind: A1
- Application number: 16/346,871
- Filed: 2018-11-26
- Published: 2021-09-09
- Earliest claimed: 2018-02-09
- Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Inventors: Sen DU; Yuanqi ZHANG; Leifang XIAO
- Web page: https://patentgrep.com/patent/US20210280644A1

## CPC

- C23C 14/042: {using masks}
- C23C 14/04: Coating on selected surface areas, e.g. using masks
- C23C 14/12: Organic material
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels}
- C23C 14/24: Vacuum evaporation
- H10K 71/166: {using selective deposition, e.g. using a mask}
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A pixel layout structure includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixel, which are arranged as a plurality of first repeat units, each including a first sub-pixel and a second sub-pixel, and further as a plurality of second repeat units, each including a third sub-pixel and a second sub-pixel. The first repeat units and the second repeat units are alternately arranged along a first direction and a second direction intersecting with it. The second sub-pixels are arranged in a matrix along the first direction and the second direction. Every four second sub-pixels surround one first sub-pixel or one third sub-pixel, and the first sub-pixels and the third sub-pixels are alternately arranged in the first direction and the second direction.

## Claims

### Claim 1

A pixel layout structure, comprising a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixel, arranged as:
a plurality of first repeat units, each comprising a first sub-pixel and a second sub-pixel; and
a plurality of second repeat units, each comprising a third sub-pixel and a second sub-pixel;
wherein:
the plurality of first repeat units and the plurality of second repeat units are alternately arranged along a first direction and a second direction intersecting with the first direction;
the plurality of second sub-pixels are arranged in a matrix along the first direction and the second direction;
every four second sub-pixels surround one first sub-pixel or one third sub-pixel; and
the plurality of first sub-pixels and the plurality of third sub-pixels are alternately arranged in the first direction and the second direction.

### Claim 2 (depends on 1)

The pixel layout structure of claim 1, wherein at least a portion of a side of at least one of the every four second sub-pixels surrounding the one first sub-pixel or the one third sub-pixel facing the one first sub-pixel or the one third sub-pixel is a curved shape.

### Claim 3

(canceled)

### Claim 4 (depends on 1)

The pixel layout structure of claim 1, wherein each of the plurality of first sub-pixels comprises at least four sides facing the every four second sub-pixels.

### Claim 5 (depends on 4)

The pixel layout structure of claim 4, wherein at least a portion of at least one of the at least four sides is a curved shape.

### Claim 6 (depends on 5)

The pixel layout structure of claim 5, wherein the curved shape portion of one first sub-pixel is substantially parallel to the curved shape portion of one second sub-pixel facing the one first sub-pixel.

### Claim 7 (depends on 5)

The pixel layout structure of claim 5, wherein the curved shape portion of one first sub-pixel is substantially same as the curved shape portion of one second sub-pixel facing the one first sub-pixel.

### Claim 8 (depends on 1)

The pixel layout structure of claim 1, wherein each of the plurality of third sub-pixels comprises at least four sides facing the every four second sub-pixels.

### Claim 9 (depends on 8)

The pixel layout structure of claim 8, wherein at least a portion of at least one of the at least four sides is a curved shape.

### Claim 10 (depends on 9)

The pixel layout structure of claim 9, wherein the curved shape portion of one third sub-pixel is substantially parallel to the curved shape portion of one second sub-pixel facing the one first sub-pixel.

### Claim 11 (depends on 9)

The pixel layout structure of claim 9, wherein the curved shape portion of one third sub-pixel is substantially same as the curved shape portion of one second sub-pixel facing the one first sub-pixel.

### Claim 12 (depends on 1)

The pixel layout structure of claim 1, wherein both of each of the plurality of first sub-pixels and third sub-pixels comprise at least four sides facing the every four second sub-pixels, and at least a portion of at least one of the at least four sides is a curved shape, wherein:
the curved shape portion of one first sub-pixel and one third sub-pixel is substantially parallel to the curved shape portion of one second sub-pixel facing the one first sub-pixel or the one third sub-pixel.

### Claim 13 (depends on 1)

The pixel layout structure of claim 1, wherein each of the plurality of second sub-pixels has an axial symmetry shape.

### Claim 14 (depends on 1)

The pixel layout structure of claim 1, wherein at least one of each of the plurality of first sub-pixels or each of the plurality of third sub-pixels has a shape of axial symmetry.

### Claim 15 (depends on 1)

The pixel layout structure of claim 1, wherein each of the plurality of second sub-pixels has a shape of substantially a circle or an oval, and either or both of each of the plurality of first sub-pixels and each of the plurality of third sub-pixels have a shape of an irregular octagon with four substantially straight sides and four substantially curved sides by chamfered corners.

### Claim 16 (depends on 1)

The pixel layout structure of claim 1, wherein each of the plurality of second sub-pixels has a relatively smaller size than each of the plurality of first sub-pixels, and each of the plurality of second sub-pixels has a relatively smaller size than each of the plurality of third sub-pixels.

### Claim 17

(canceled)

### Claim 18 (depends on 1)

The pixel layout structure of claim 1, wherein a gap distance between any adjacent sub-pixels has a minimum distance of around 16 μm.

### Claim 19 (depends on 1)

A mask set for fabricating a pixel layout structure according to claim 1, comprising at least one mask, wherein each of the at least one mask is provided with a plurality of openings, corresponding to the plurality of first sub-pixels, the plurality of second sub-pixels, or the plurality of third sub-pixels of the pixel layout structure in sizes and positions.

### Claim 20 (depends on 19)

The mask set according to claim 19, comprising a first mask, a second mask, and a third mask, wherein:
the first mask is provided with a plurality of first openings, corresponding to the plurality of first sub-pixels in sizes and positions;
the second mask is provided with a plurality of second openings, corresponding to the plurality of second sub-pixels in sizes and positions; and
the third mask is provided with a plurality of third openings, corresponding to the plurality of third sub-pixels in sizes and positions.

### Claim 21 (depends on 1)

A display apparatus, comprising a pixel layout structure according to claim 1.

### Claim 22 (depends on 21)

The display apparatus of claim 21, wherein each of the plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels comprises an OLED.