# US 12,191,317 B2 · Display device

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- Number: US 12,191,317 B2
- Document ID: US12191317B2
- Status: Granted
- Kind: B2
- Application number: 17/452,246
- Filed: 2021-10-26
- Published: 2022-02-10
- Granted: 2025-01-07
- Earliest claimed: 2015-08-11
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Won Kyu Kwak; Jae Yong Lee
- Web page: https://patentgrep.com/patent/US12191317B2

## CPC

- H10D 86/60: wherein the TFTs are in active matrices
- H10D 86/443: {adapted for preventing breakage, peeling or short circuiting}
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K 77/111: {Flexible substrates}
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A display device is disclosed. In one aspect, the display device includes a substrate including a display area, the display area including a plurality of pixels configured to display an image and a pad area adjacent to the pad area and configured to transfer electrical signals. At least a portion of the pad area is bendable. The display device also includes an insulating layer formed over the substrate and including a bending groove in the pad area. The bending groove includes a sidewall. A plurality of peripheral wires is formed over the insulating layer, and a cutoff portion is connected to the sidewall and disposed between adjacent peripheral wires.

## Claims

### Claim 1

A display device comprising:
a display area comprising a plurality of pixels on a substrate;
a pad area on the substrate and adjacent to the display area;
an insulating layer disposed on the substrate and comprising a plurality of recess portions in which a portion of the insulating layer is removed,
wherein a recess portion comprises a region from which the portion of the insulating layer is removed that extends from the pad area to the display area;
a plurality of peripheral wires disposed on the insulating layer,
wherein the recess portion is disposed between adjacent peripheral wires, and
the plurality of recess portions and the peripheral wires are alternately disposed one by one.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the insulating layer includes a gap area where the insulating layer is removed and that overlaps the pad area, and
wherein the gap area extends in a direction crossing a direction in which the peripheral wires extend.

### Claim 3 (depends on 1)

The display device of claim 1, wherein the display area includes a display wire extending from the pixel to the pad area, and wherein an end region of the peripheral wires contacts the display wire through a first contact hole.

### Claim 4 (depends on 1)

The display device of claim 1, wherein the pad area includes a pad electrode and a pad wire, wherein another end of the peripheral wire contacts the pad wire through a second contact hole, and wherein the pad electrode contacts the pad wire through a pad contact hole.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the display area is connected to a display wire and includes a thin film transistor comprising a gate electrode, a source electrode, and a drain electrode, wherein the display wire is formed of the same material as the gate electrode, and wherein the peripheral wires are formed of the same material as the source and drain electrodes.

### Claim 6 (depends on 1)

The display device of claim 1, wherein a height of the recess portion is substantially equal to or less than that of the insulating layer.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the substrate is flexible.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the recess portion is substantially rectangular.

### Claim 9 (depends on 1)

The display device of claim 1, wherein a width of the recess portion is less than a width of the peripheral wires.