# US 12,120,929 B2 · Display apparatus and method of manufacturing the same

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- Number: US 12,120,929 B2
- Document ID: US12120929B2
- Status: Granted
- Kind: B2
- Application number: 17/460,393
- Filed: 2021-08-30
- Published: 2022-05-26
- Granted: 2024-10-15
- Earliest claimed: 2020-11-24
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Yunseok Han; Dowon Yi; Myounghee Lee; Jungmi Jang
- Web page: https://patentgrep.com/patent/US12120929B2

## CPC

- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K 59/1201: {Manufacture or treatment}
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels}
- H10K 59/40: OLEDs integrated with touch screens
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Provided are a display apparatus, of which a display area is expanded for the representation of images in an area where an electronic component is located and in which the degradation in performance of the electronic component is reduced, and a method of manufacturing the display apparatus. The display apparatus includes a substrate, a light-emitting element disposed on the substrate, and a lower metal layer disposed under the light-emitting element. The lower metal layer includes a first surface facing the substrate and including an uneven portion, and a second surface opposite to the first surface. The first surface of the lower metal layer has surface roughness greater than that of the second surface of the lower metal layer.

## Claims

### Claim 1

A display apparatus comprising a first display area and a second display area comprising a transmission area, the display apparatus comprising:
a substrate;
an insulating layer on the substrate;
a semiconductor layer on the insulating layer;
a first light-emitting element and a second light-emitting element that are arranged in the second display area on the substrate and apart from each other with the transmission area between the first light-emitting element and the second light-emitting element; and
a lower metal layer disposed between the insulating layer and the substrate in the second display,
wherein the lower metal layer comprises a first surface facing the substrate and a second surface opposite to the first surface, and the first surface of the lower metal layer comprises uneven portions.

### Claim 2 (depends on 1)

The display apparatus of claim 1, wherein a surface roughness of the first surface of the lower metal layer is greater than a surface roughness of the second surface of the lower metal layer.

### Claim 3 (depends on 1)

The display apparatus of claim 1, further comprising a pattern layer arranged between the substrate and the lower metal layer and including a material different from the lower metal layer.

### Claim 4 (depends on 3)

The display apparatus of claim 3, wherein the pattern layer comprises an inorganic insulating material.

### Claim 5 (depends on 3)

The display apparatus of claim 3, wherein the pattern layer comprises amorphous silicon.

### Claim 6 (depends on 3)

The display apparatus of claim 3, wherein a thickness of the pattern layer is less than a thickness of the lower metal layer.

### Claim 7 (depends on 3)

The display apparatus of claim 3, wherein a thickness of the pattern layer is between about 50 Å and about 400 Å.

### Claim 8 (depends on 3)

The display apparatus of claim 3, wherein the lower metal layer and the pattern layer each comprise an opening corresponding to the transmission area.

### Claim 9 (depends on 3)

The display apparatus of claim 3, wherein a portion of the first surface of the lower metal layer contacts the substrate and another portion of the first surface of the lower metal layer contacts the pattern layer.

### Claim 10 (depends on 3)

The display apparatus of claim 3, wherein the pattern layer comprises a body portion and a plurality of pattern openings which are spaced apart from each other and at least some of which are surrounded by the body portion.

### Claim 11 (depends on 10)

The display apparatus of claim 10, wherein the first surface of the lower metal layer comprises a plurality of convex portions and a plurality of concave portions and the plurality of convex portions are arranged in the plurality of pattern openings of the pattern layer.

### Claim 12 (depends on 10)

The display apparatus of claim 10, wherein each of the plurality of pattern openings of the pattern layer has a circular shape, an oval shape, or a polygonal shape in a plan view.

### Claim 13 (depends on 3)

The display apparatus of claim 3, wherein the pattern layer comprises a plurality of pattern material portions that are spaced apart from each other in a plan view and each of the plurality of pattern material portions is in an island form.

### Claim 14 (depends on 13)

The display apparatus of claim 13, wherein the first surface of the lower metal layer comprises a plurality of convex portions and a plurality of concave portions and the plurality of convex portions are respectively arranged between the plurality of pattern material portions of the pattern layer.

### Claim 15 (depends on 13)

The display apparatus of claim 13, wherein each of the plurality of pattern material portions of the pattern layer has a circular shape, an oval shape, or a polygonal shape on a plane.

### Claim 16 (depends on 1)

The display apparatus of claim 1, further comprising:
a pixel circuit arranged between the light-emitting element and the lower metal layer to overlap the lower metal layer in a plan view.