# US 2021/0242377 A1 · Light-emitting diode display

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- Number: US 2021/0242377 A1
- Document ID: US20210242377A1
- Status: Published application
- Kind: A1
- Application number: 16/924,229
- Filed: 2020-07-09
- Published: 2021-08-05
- Earliest claimed: 2020-02-03
- Assignees: Au Optronics Corporation
- Applicants: Au Optronics Corporation
- Inventors: Yi-Fen Lan; Tsung-Tien Wu
- Web page: https://patentgrep.com/patent/US20210242377A1

## CPC

- H10H 20/856: Reflecting means
- H10W 90/00: Package configurations
- H10H 20/855: Optical field-shaping means, e.g. lenses
- 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 light-emitting diode display having sub-pixel regions is provided. Each of the sub-pixel region includes a substrate, first and second electrodes, a light-emitting diode, and at least one blocking wall. The substrate has an active device. The first and second electrodes are separately disposed on the substrate. The first electrode is electrically connected to the active device, and a horizontal distance between the first and second electrodes is W1. The light-emitting diode is disposed on the substrate and includes a semiconductor stack, and first and second pads. The first pad contacts the first electrode, the second pad contacts the second electrode, and a maximum thickness of the semiconductor stack is H1. The blocking wall is disposed on the substrate and located between the first and second pads to prevent a contact therebetween. A height of the blocking wall is H2 and a width thereof is W2. H2≤½H1, and W2≤W1.

## Claims

### Claim 1

A light-emitting diode display having a plurality of sub-pixel regions, each of the sub-pixel regions comprising:
a substrate having an active device;
a first electrode and a second electrode separately disposed on the substrate, wherein the first electrode is electrically connected to the active device, and a horizontal distance between the first electrode and the second electrode is W1;
a light-emitting diode disposed on the substrate, and comprising a semiconductor stack, a first pad, and a second pad, wherein the first pad and the second pad are separately disposed on the semiconductor stack, the first pad contacts the first electrode, the second pad contacts the second electrode, and a maximum thickness of the semiconductor stack is H1; and
at least one blocking wall disposed on the substrate, and located between the first pad and the second pad to prevent a contact between the first pad and the second pad, wherein a height of the at least one blocking wall is H2 and a width of the at least one blocking wall is W2,
wherein H2≤½H1, and W2≤W1.

### Claim 2 (depends on 1)

The light-emitting diode display as described in claim 1, wherein the at least one blocking wall is located between the first electrode and the second electrode, and an orthographic projection of the at least one blocking wall on the substrate, an orthographic projection of the first electrode on the substrate, and an orthographic projection of the second electrode on the substrate do not overlap.

### Claim 3 (depends on 1)

The light-emitting diode display as described in claim 1, further comprising:
at least one spacer disposed on at least one side of the light-emitting diode, and located between adjacent ones of the sub-pixel regions, wherein the at least one spacer has reflective properties or absorptive properties.

### Claim 4 (depends on 1)

The light-emitting diode display as described in claim 1, wherein when the light-emitting diode display is viewed from above, a shape of the at least one blocking wall comprises a solid strip shape, a hollow rectangle, a hollow triangle, a V shape, a U shape, and a B shape.

### Claim 5 (depends on 4)

The light-emitting diode display as described in claim 4, wherein when the shape of the at least one blocking wall is a solid strip shape, a length of the at least one blocking wall is greater than a length of a short side of the light-emitting diode.

### Claim 6 (depends on 4)

The light-emitting diode display as described in claim 4, wherein when the shape of the at least one blocking wall is a solid strip shape, a V shape, or a U shape, two ends of the at least one blocking wall are located outside the light-emitting diode.

### Claim 7 (depends on 4)

The light-emitting diode display as described in claim 4, wherein when the shape of the at least one blocking wall is a hollow rectangle or a hollow triangle, the at least one blocking wall surrounds the first pad or the second pad.

### Claim 8 (depends on 4)

The light-emitting diode display as described in claim 4, wherein when the shape of the at least one blocking wall is a V shape or a U shape, the at least one blocking wall partially surrounds the first pad or the second pad.

### Claim 9 (depends on 4)

The light-emitting diode display as described in claim 4, wherein when the shape of the at least one blocking wall is a B shape, the at least one blocking wall comprises a first hollow region and a second hollow region, wherein the first pad is located in the first hollow region, and the second pad is located in the second hollow region.

### Claim 10 (depends on 1)

The light-emitting diode display as described in claim 1, wherein the at least one blocking wall is a plurality of blocking walls, and when the light-emitting diode display is viewed from above, a shape of each of the blocking walls comprises a solid strip shape, a hollow rectangle, a hollow triangle, a V shape, and a U shape.