# US 2020/0401259 A1 · Touch sensor and display device comprising same

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

- Number: US 2020/0401259 A1
- Document ID: US20200401259A1
- Status: Published application
- Kind: A1
- Application number: 16/962,584
- Filed: 2019-01-10
- Published: 2020-12-24
- Earliest claimed: 2018-01-18
- Assignees: Dongwoo Fine-Chem Co., Ltd.
- Applicants: Dongwoo Fine-Chem Co., Ltd.
- Inventors: Sungwoo YU; Dongjin SON; Byung Hoon SONG; Hodong YOON
- Web page: https://patentgrep.com/patent/US20200401259A1

## CPC

- G06F 3/044: by capacitive means
- G02F 1/13338: {Input devices, e.g. touch panels}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- H10K 59/40: OLEDs integrated with touch screens
- H10K 59/87: {Passivation; Containers; Encapsulations}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Provided is a thin touch sensor having excellent flexibility and durability against bending. A thin adhesive layer with a high elastic modulus under the touch sensing electrode pattern serves as a substrate, and a thick adhesive layer with a low elastic modulus on top of the touch sensor layer disperses the stress of the optical film

## Claims

### Claim 1

A touch sensor comprising:
a lower adhesive layer;
a touch sensor layer including a touch sensing electrode pattern formed on the lower adhesive layer; and
an upper adhesive layer on the touch sensor layer, wherein the upper adhesive layer is thicker than the lower adhesive layer, and the upper adhesive layer has a lower elastic modulus than that of the lower adhesive layer.

### Claim 2 (depends on 1)

The touch sensor according to claim 1, wherein the lower adhesive layer has a thickness of 2 to 20 μm and an elastic modulus of 0.5 to 5.0 MPa,
the upper adhesive layer has a thickness of 5 to 50 μm and an elastic modulus of 0.05 to 1.00 MPa,
when the thickness of the upper adhesive layer is T1 and the thickness of the lower adhesive layer is T2, T1/T2 has a value between 1.1 and 5.0, and,
when the elastic modulus of the upper adhesive layer is M1 and the elastic modulus of the lower adhesive layer is M2, M2/M1 has a value between 1.16 and 20.0.

### Claim 3 (depends on 2)

The touch sensor according to claim 2, wherein the upper adhesive layer and the lower adhesive layer are made of OCA (Optically Clear Adhesive).

### Claim 4 (depends on 3)

The touch sensor according to claim 3, wherein the touch sensor does not comprise a base film.

### Claim 5 (depends on 1)

A laminate, comprising:
the touch sensor according to claim 1; and
a window bonded with the touch sensor through the upper adhesive layer.

### Claim 6 (depends on 5)

The laminate according to claim 5, wherein the window is provided with a hard coating film, and further comprises a polarizing layer including a polarizer on one surface of the window.

### Claim 7 (depends on 6)

The laminate according to claim 6, wherein the window further includes a colored light-shielding pattern printed around an edge of at least one surface of the polarizing layer.

### Claim 8 (depends on 1)

A display device, comprising:
the touch sensor according to claim 1;
a window bonded with the touch sensor through the upper adhesive layer; and
a display layer bonded with the touch sensor through the lower adhesive layer.

### Claim 9 (depends on 8)

The display device according to claim 8, wherein the window is provided with a hard coating film, and further comprises a polarizing layer including a polarizer on one surface of the window.

### Claim 10 (depends on 9)

The display device according to claim 9, wherein the window further includes a colored light-shielding pattern printed around an edge of at least one surface of the polarizing layer.

### Claim 11 (depends on 8)

The display device according to claim 8, wherein the display layer is an LCD layer or an OLED layer.

### Claim 12 (depends on 2)

A laminate, comprising:
the touch sensor according to claim 2; and
a window bonded with the touch sensor through the upper adhesive layer.

### Claim 13 (depends on 3)

A laminate, comprising:
the touch sensor according to claim 3; and
a window bonded with the touch sensor through the upper adhesive layer.

### Claim 14 (depends on 4)

A laminate, comprising:
the touch sensor according to claim 4; and
a window bonded with the touch sensor through the upper adhesive layer.

### Claim 15 (depends on 2)

A display device, comprising:
the touch sensor according to claim 2;
a window bonded with the touch sensor through the upper adhesive layer; and
a display layer bonded with the touch sensor through the lower adhesive layer.

### Claim 16 (depends on 3)

A display device, comprising:
the touch sensor according to claim 3;
a window bonded with the touch sensor through the upper adhesive layer; and
a display layer bonded with the touch sensor through the lower adhesive layer.

### Claim 17 (depends on 4)

A display device, comprising:
the touch sensor according to claim 4;
a window bonded with the touch sensor through the upper adhesive layer; and
a display layer bonded with the touch sensor through the lower adhesive layer.