# US 12,218,177 B2 · Display device

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- Number: US 12,218,177 B2
- Document ID: US12218177B2
- Status: Granted
- Kind: B2
- Application number: 17/454,016
- Filed: 2021-11-08
- Published: 2022-08-18
- Granted: 2025-02-04
- Earliest claimed: 2021-02-16
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Won Ho Lee; Jong Hyuk Kang; Buem Joon Kim; Hyun Deok Im; Eun A Cho
- Web page: https://patentgrep.com/patent/US12218177B2

## CPC

- H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout}
- H10W 90/00: Package configurations
- H10H 20/821: of the light-emitting regions, e.g. non-planar junctions
- H10H 20/831: characterised by their shape
- H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings
- 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 in accordance with some embodiments may include a base layer, a first bank pattern and a second bank pattern on the base layer, and spaced apart from each other in a first direction, a first electrode overlapping the first bank pattern, a second electrode overlapping the second bank pattern, and a light emitting element aligned between the first electrode and the second electrode, wherein a distance between an end of the first electrode and an end of the first bank pattern differs from a distance between an end of the second electrode and an end of the second bank pattern in the first direction.

## Claims

### Claim 1

A display device comprising:
a base layer;
a first bank pattern and a second bank pattern on the base layer, the first bank pattern and the second bank pattern are spaced apart from each other in a first direction;
a first electrode overlapping the first bank pattern;
a second electrode overlapping the second bank pattern; and
a light emitting element aligned between the first electrode and the second electrode,
wherein a distance in the first direction between an end of the first electrode closest to the light emitting element among ends of the first electrode, and an end of the first bank pattern closest to the light emitting element among ends of the first bank pattern, differs from a distance in the first direction between an end of the second electrode closest to the light emitting element among ends of the second electrode, and an end of the second bank pattern closest to the light emitting element among ends of the second bank pattern.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the distance between the end of the first electrode and the end of the first bank pattern is greater than the distance between the end of the second electrode and the end of the second bank pattern in the first direction.

### Claim 3 (depends on 1)

The display device according to claim 1, wherein the distance between the end of the first electrode and the end of the first bank pattern is less than the distance between the end of the second electrode and the end of the second bank pattern in the first direction.

### Claim 4 (depends on 1)

The display device according to claim 1, wherein, in a plan view, a width of the first bank pattern is substantially identical to a width of the second bank pattern in the first direction.

### Claim 5 (depends on 4)

The display device according to claim 4, wherein, in the plan view, a width of the first electrode differs from a width of the second electrode in the first direction.

### Claim 6 (depends on 5)

The display device according to claim 5, wherein the width of the first electrode is greater than the width of the second electrode in the first direction.

### Claim 7 (depends on 5)

The display device according to claim 5, wherein the width of the first electrode is less than the width of the second electrode in the first direction.

### Claim 8 (depends on 1)

The display device according to claim 1, wherein a distance between a first end of the first electrode and a first end of the first bank pattern is substantially identical to a distance between a second end of the first electrode and a second end of the first bank pattern.

### Claim 9 (depends on 1)

The display device according to claim 1, wherein a distance between a first end of the first electrode and a first end of the first bank pattern differs from a distance between a second end of the first electrode and a second end of the first bank pattern.

### Claim 10 (depends on 1)

The display device according to claim 1, wherein the light emitting element is aligned between the first electrode and the second electrode such that a longitudinal direction of the light emitting element is substantially parallel with the first direction, and
wherein a first end of the light emitting element is electrically coupled with the first electrode, and a second end of the light emitting element is electrically coupled with the second electrode.

### Claim 11 (depends on 1)

The display device according to claim 1, wherein the distance between the end of the first electrode and the end of the first bank pattern is 3 μm or more in the first direction, and
wherein the distance between the end of the second electrode and the end of the second bank pattern is less than 3 μm.

### Claim 12

A display device comprising:
a base layer;
a bank pattern comprising a first bank pattern and a second bank pattern on the base layer, the first bank pattern and the second bank pattern are spaced apart from each other;
a first electrode on the first bank pattern, at least partially overlapping with the first bank pattern, and comprising an extension that does not overlap with the first bank pattern;
a second electrode on the second bank pattern, at least partially overlapping with the second bank pattern, and comprising an extension that does not overlap with the second bank pattern; and
a light emitting element aligned between the first electrode and the second electrode,
wherein a length of the extension of the first electrode differs from a length of the extension of the second electrode, and
wherein an end of the extension of the first electrode is closest to the light emitting element among ends of the first electrode, and wherein an end of the extension of the second electrode is closest to the light emitting element among ends of the second electrode.

### Claim 13 (depends on 12)

The display device according to claim 12, wherein the length of the extension of the first electrode is from an end of the first bank pattern to the end of the extension of the first electrode, and
wherein the length of the extension of the second electrode is from an end of the second bank pattern to the end of the extension of the second electrode.

### Claim 14 (depends on 13)

The display device according to claim 13, wherein the length of the extension of the first electrode is greater than the length of the extension of the second electrode.

### Claim 15 (depends on 14)

The display device according to claim 14, wherein the length of the extension of the first electrode is 3 μm or more, and
wherein the length of the extension of the second electrode is less than 3 μm.

### Claim 16 (depends on 13)

The display device according to claim 13, wherein the length of the extension of the first electrode is less than the length of the extension of the second electrode.

### Claim 17 (depends on 16)

The display device according to claim 16, wherein the length of the extension of the first electrode is less than 3 μm, and
wherein the length of the extension of the second electrode is 3 μm or more.

### Claim 18 (depends on 12)

The display device according to claim 12, further comprising:
a first contact electrode at least partially overlapping a first end of the light emitting element; and
a second contact electrode at least partially overlapping with a second end of the light emitting element.

### Claim 19 (depends on 18)

The display device according to claim 18, wherein the first contact electrode is electrically coupled with the first electrode, and is electrically coupled with the first end of the light emitting element.

### Claim 20 (depends on 18)

The display device according to claim 18, wherein the second contact electrode is electrically coupled with the second electrode, and is electrically coupled with the second end of the light emitting element.