# US 12,191,423 B2 · Display device and method of manufacturing the same

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- Number: US 12,191,423 B2
- Document ID: US12191423B2
- Status: Granted
- Kind: B2
- Application number: 18/452,520
- Filed: 2023-08-18
- Published: 2023-12-07
- Granted: 2025-01-07
- Earliest claimed: 2020-03-17
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Seung Min Lee; Jin Taek Kim; Baek Hyeon Lim; Jin Yeong Kim; Kyung Tae Chae; Jung Hwan Yi; Hee Keun Lee
- Web page: https://patentgrep.com/patent/US12191423B2

## CPC

- H10H 20/8312: {extending at least partially through the bodies}
- H10W 90/00: Package configurations
- H10H 20/01: Manufacture or treatment
- H10H 20/853: characterised by their shape
- H10H 20/032: {of electrodes}
- H10H 20/0362: {of encapsulations}
- H10H 20/0364: {of interconnections}
- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A display device includes: a substrate having a display area and a non-display area; and a pixel in each of a pixel area in the display area. Each of the pixels includes: an insulating layer on the substrate and having an opening; first and second electrodes on the insulating layer and spaced apart from each other; a plurality of light emitting elements in the opening; a first contact electrode electrically connecting one end of the light emitting elements and the first electrode to each other; a second contact electrode electrically connecting another end of the light emitting elements and the second electrode to each other; a first insulating pattern on the first contact electrode; and a second insulating pattern on the second contact electrode. The first insulating pattern and the second insulating pattern are on the same layer and spaced apart from each other.

## Claims

### Claim 1

A display device comprising:
a substrate having a display area and a non-display area extending around a side of the display area, the display area comprising a plurality of pixel areas; and
a pixel in each of the pixel areas, the pixel comprising:
an insulating layer on a surface of the substrate and having an opening;
first and second electrodes on the insulating layer and spaced apart from each other;
a plurality of light emitting elements in the opening;
a first contact electrode electrically connecting one end of the light emitting elements and the first electrode to each other;
a second contact electrode electrically connecting another end of the light emitting elements and the second electrode to each other;
a first insulating pattern on the first contact electrode; and
a second insulating pattern on the second contact electrode, the first insulating pattern and the second insulating pattern being on the same layer and spaced apart from each other in a direction parallel to the surface of the substrate such that the first insulating pattern and the second insulating pattern do not overlap each other when viewed on a plane.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the first insulating pattern and the second insulating pattern are organic insulating films comprising the same organic material.

### Claim 3 (depends on 1)

The display device according to claim 1, further comprising an encap layer directly contacting both the first insulating pattern and the second insulating pattern.

### Claim 4 (depends on 1)

The display device according to claim 1, wherein the first insulating pattern overlaps the first contact electrode when viewed on the plane, and the second insulating pattern overlaps the second contact electrode when viewed on the plane.

### Claim 5 (depends on 4)

The display device according to claim 4, wherein the first contact electrode and the first insulating pattern have the same planar shape, and the second contact electrode and the second insulating pattern have the same planar shape.

### Claim 6 (depends on 1)

The display device according to claim 1, wherein the first insulating pattern is directly on the first contact electrode, and the second insulating pattern is directly on the second contact electrode.

### Claim 7 (depends on 6)

The display device according to claim 6, wherein the first contact electrode and the first insulating pattern have the same planar shape, and the second contact electrode and the second insulating pattern have the same planar shape.

### Claim 8 (depends on 1)

The display device according to claim 1, wherein the pixel further comprises a pixel circuit portion comprising a transistor, and
wherein the pixel circuit portion is between the substrate and the insulating layer.

### Claim 9 (depends on 8)

The display device according to claim 8, wherein the transistor is spaced apart from the opening in the insulating layer when viewed in a cross section.