# US 12,765,174 B2 · Display device

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- Number: US 12,765,174 B2
- Document ID: US12765174B2
- Status: Granted
- Kind: B2
- Application number: 18/543,306
- Filed: 2023-12-18
- Published: 2024-10-24
- Granted: 2026-10-13
- Earliest claimed: 2023-04-24
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: Chaun Gi Choi; Dong Uk Kim; Hyun Ho Kim; Hyoeng Ki Kim; Hyeon Bum Lee; Hoon Gi Lee
- Web page: https://patentgrep.com/patent/US12765174B2

## CPC

- H10K 59/1213: {the pixel elements being TFTs}
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display device includes a substrate; a first active layer disposed on the substrate; and a first gate electrode overlapping a part of the first active layer, the first gate electrode having a hole, and the hole of the first gate electrode does not overlap the first active layer.

## Claims

### Claim 1

A display device comprising:
a substrate;
a first active layer disposed on the substrate;
a first gate electrode overlapping a part of the first active layer, the first gate electrode having a hole; and
a capacitor electrode having a hole overlapping the first gate electrode,
wherein the hole of the first gate electrode does not overlap the first active layer.

### Claim 2 (depends on 1)

The display device of claim 1, wherein an insulating layer is disposed in the hole of the first gate electrode.

### Claim 3 (depends on 1)

The display device of claim 1, further comprising:
a light blocking layer disposed between the substrate and the first active layer.

### Claim 4 (depends on 3)

The display device of claim 3, wherein the hole of the first gate electrode overlaps the light blocking layer.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the hole of the first gate electrode overlaps the capacitor electrode.

### Claim 6 (depends on 5)

The display device of claim 5, wherein the hole of the first gate electrode overlaps the hole of the capacitor electrode.

### Claim 7 (depends on 1)

The display device of claim 1, further comprising:
a second active layer adjacent to the first active layer.

### Claim 8 (depends on 7)

The display device of claim 7, further comprising:
a gate connection electrode electrically connecting the first gate electrode to the second active layer through contact holes of an insulating layer.

### Claim 9 (depends on 8)

The display device of claim 8, wherein the hole of the first gate electrode overlaps the gate connection electrode.

### Claim 10 (depends on 7)

The display device of claim 7, further comprising:
a second gate electrode overlapping the second active layer.

### Claim 11 (depends on 10)

The display device of claim 10, wherein the second gate electrode includes a hole.

### Claim 12 (depends on 11)

The display device of claim 11, wherein the hole of the second gate electrode overlaps the second active layer.

### Claim 13 (depends on 11)

The display device of claim 11, wherein an insulating layer is disposed in the hole of the second gate electrode.

### Claim 14 (depends on 10)

The display device of claim 10, further comprising:
a gate line electrically connected to the second gate electrode.

### Claim 15 (depends on 14)

The display device of claim 14, further comprising:
an insulating layer having a hole overlapping the gate line.

### Claim 16 (depends on 15)

The display device of claim 15, wherein a part of the gate line is disposed in the hole of the insulating layer.

### Claim 17 (depends on 15)

The display device of claim 15, wherein the hole of the insulating layer is adjacent to the second active layer.

### Claim 18 (depends on 1)

The display device of claim 1, wherein the first gate electrode contains titanium and aluminum.

### Claim 19

A display device comprising:
a substrate;
a first active layer disposed on the substrate; and
a first gate electrode overlapping a part of the first active layer, the first gate electrode having a hole,
wherein an entirety of the hole of the first gate electrode does not overlap the first active layer.

### Claim 20

A display device comprising:
a substrate;
a first active layer disposed on the substrate;
a first gate electrode overlapping a part of the first active layer, the first gate electrode having a hole; and
a second active layer adjacent to the first active layer,
wherein the hole of the first gate electrode does not overlap the first active layer,
wherein the first active layer contains polycrystalline silicon, and
wherein the second active layer contains an oxide.

### Claim 21 (depends on 20)

The display device of claim 20, wherein the second active layer contains indium-gallium-zinc oxide (IGZO) or indium-gallium-zinc-tin oxide (IGZTO).