# US 12,181,921 B2 · Display device and method of manufacturing the same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,181,921 B2
- Document ID: US12181921B2
- Status: Granted
- Kind: B2
- Application number: 17/949,227
- Filed: 2022-09-21
- Published: 2023-04-27
- Granted: 2024-12-31
- Earliest claimed: 2021-10-26
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Hirotsugu Kishimoto; Dasom Gu; Chul Ho Jeong
- Web page: https://patentgrep.com/patent/US12181921B2

## CPC

- G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)}
- G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position}
- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G06F 3/046: by electromagnetic means
- G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A display device includes a display panel including a first non-foldable area, a foldable area, and a second non-foldable area defined therein, a sensor including a plurality of loop portions and a plurality of line portions, and at least one transverse line comprising at least one of the loop portions and the line portions that overlaps substantially all of the first non-foldable area, the foldable area, and the second non-foldable area. The at least one transverse line includes a first rigid portion overlapping the first non-foldable area, a flexible portion overlapping the foldable area, and a second rigid portion overlapping the second non-foldable area. The flexible portion has a first width, the first rigid portion has a second width, the second rigid portion has a third width, with the first width being greater than the second width and the third width.

## Claims

### Claim 1

A display device comprising:
a display panel comprising a first non-foldable area, a foldable area adjacent to the first non-foldable area and foldable about to a folding axis, and a second non-foldable area adjacent to the foldable area, the first non-foldable area, the foldable area, and the second non-foldable area being sequentially arranged along a first direction;
a sensor disposed under the display panel and comprising a plurality of loop portions and a plurality of line portions connected to the loop portions; and
at least one transverse line comprising at least one of the loop portions and the line portions that overlaps substantially all of the first non-foldable area, the foldable area, and the second non-foldable area,
wherein:
the at least one transverse line comprises a first rigid portion overlapping the first non-foldable area, a flexible portion overlapping the foldable area, and a second rigid portion overlapping the second non-foldable area, and
the flexible portion has a first width, the first rigid portion has a second width, the second rigid portion has a third width, with the first width being greater than the second width and the third width.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the difference between the first width and the second width is between about 50 micrometers and about 200 micrometers.

### Claim 3 (depends on 1)

The display device of claim 1, wherein the flexible portion comprises a material different from a material of the first and second rigid portions.

### Claim 4 (depends on 1)

The display device of claim 1, wherein the foldable area has a width between about 5 mm and about 40 mm.

### Claim 5 (depends on 1)

The display device of claim 1, wherein the first rigid portion and the second rigid portion comprise copper.

### Claim 6 (depends on 1)

The display device of claim 1, wherein the flexible portion comprises a conductive material.

### Claim 7 (depends on 1)

The display device of claim 1, wherein the flexible portion comprises a conductive filler comprising copper, silver, or carbon.

### Claim 8 (depends on 1)

The display device of claim 1, wherein the flexible portion comprises a styrene-butadiene rubber, a butadiene rubber, a butyl rubber, a silicone rubber, or a urethane rubber.

### Claim 9 (depends on 1)

The display device of claim 1, wherein the flexible portion has a flexibility between about 2% and about 50%.

### Claim 10 (depends on 1)

The display device of claim 1, wherein the flexible portion has a volume resistance between about 1×10−7 Ωcm and about 1×10−4 Ωcm.

### Claim 11 (depends on 1)

The display device of claim 1, wherein each of the first rigid portion and the second rigid portion is provided in plural, and a distance between the first rigid portions and a distance between the second rigid portions are equal to or less than about 200 micrometers.

### Claim 12 (depends on 1)

The display device of claim 1, wherein the sensor comprises a digitizer, the loop portions comprise coil portions, the line portions comprise routing line portions and a portion of the digitizer that overlaps the foldable area, has a thickness smaller than a thickness of portions of the digitizer overlapping the first and second non-foldable areas.