# US 2026/0090147 A1 · Display device

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- Number: US 2026/0090147 A1
- Document ID: US20260090147A1
- Status: Published application
- Kind: A1
- Application number: 18/953,049
- Filed: 2024-11-19
- Published: 2026-03-26
- Earliest claimed: 2024-09-26
- Assignees: AUO Corporation
- Applicants: AUO Corporation
- Inventors: Chia-An Lee; Yu-Hsin Huang; Wen-Wei Yang; YinYu Chen; Yi-Hong Chen; Kuan-Heng Lin
- Web page: https://patentgrep.com/patent/US20260090147A1

## CPC

- H10H 20/819: characterised by their shape, e.g. curved or truncated substrates
- H10H 20/8314: {extending at least partially onto an outer side surface of the bodies}
- H10H 20/82: Roughened surfaces, e.g. at the interface between epitaxial layers
- H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings
- H10H 20/853: characterised by their shape
- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

Provided is a display device including a substrate and multiple display pixels on the substrate. Each display pixel includes a light emitting unit and an insulating layer. The light emitting unit includes a first ohmic contact metal, a light emitting diode, and a second ohmic contact metal that are disposed in sequence in a direction away from the substrate. The insulating layer is disposed on at least a side of the light emitting diode, and includes a first protruding portion, where a distance between the first protruding portion and the substrate is greater than or equal to a distance between a top surface of the light emitting diode and the substrate. A part of the second ohmic contact metal is disposed on a first side wall of the first protruding portion facing the light emitting diode.

## Claims

### Claim 1

A display device, comprising a substrate and a plurality of display pixels disposed on the substrate, each of the display pixels comprising:
a light emitting unit, comprising a first ohmic contact metal, a light emitting diode, and a second ohmic contact metal disposed sequentially in a direction away from the substrate, wherein the first ohmic contact metal and the second ohmic contact metal are respectively connected to the light emitting diode; and
an insulating layer, disposed on at least one side of the light emitting diode, comprising a first protruding portion, wherein a distance between the first protruding portion and the substrate is greater than or equal to a distance between a top surface of the light emitting diode away from the substrate and the substrate, wherein
a part of the second ohmic contact metal is disposed on a first side wall of the first protruding portion facing the light emitting diode.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the top surface of the light emitting diode comprises a central region and a peripheral region, wherein the central region is exposed from the second ohmic contact metal.

### Claim 3 (depends on 1)

The display device according to claim 1, further comprising a conductive layer electrically connected between the second ohmic contact metal and the substrate, wherein at least a part of the conductive layer is disposed on a second side wall of the first protruding portion away from the light emitting diode.

### Claim 4 (depends on 3)

The display device according to claim 3, wherein the conductive layer is also disposed on the first side wall of the first protruding portion facing the light emitting diode.

### Claim 5 (depends on 4)

The display device according to claim 4, wherein the part of the second ohmic contact metal is located between the conductive layer and the first side wall, and the conductive layer is a transparent conductive layer.

### Claim 6 (depends on 1)

The display device according to claim 1, wherein the insulating layer further comprises a second protruding portion, wherein a distance between the second protruding portion and the substrate is greater than or equal to a distance between the top surface of the light emitting diode and the substrate.

### Claim 7 (depends on 6)

The display device according to claim 6, wherein another part of the second ohmic contact metal is disposed on a side wall of the second protruding portion facing the light emitting diode.

### Claim 8 (depends on 6)

The display device according to claim 6, wherein the each of the display pixels further comprises a light-absorbing material disposed on a side wall of the second protruding portion facing the light emitting diode.

### Claim 9 (depends on 6)

The display device according to claim 6, wherein the insulating layer is disposed around the light emitting diode.

### Claim 10 (depends on 1)

The display device according to claim 1, wherein the first side wall has a tilt angle within a range of 90 degrees to 120 degrees, and a thickness of the first protruding portion in a normal direction of the substrate is less than or equal to 10 microns and greater than 4 microns.

### Claim 11 (depends on 1)

The display device according to claim 1, wherein a distance between the first protruding portion and the light emitting diode is less than or equal to 4 microns.