# US 10,374,191 B2 · Display device

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- Number: US 10,374,191 B2
- Document ID: US10374191B2
- Status: Granted
- Kind: B2
- Application number: 15/867,247
- Filed: 2018-01-10
- Published: 2019-01-03
- Granted: 2019-08-06
- Earliest claimed: 2017-07-03
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Youn Hwan Jung; Kyu Han Bae; Jae Lok Cha; Kang Yong Lee
- Web page: https://patentgrep.com/patent/US10374191B2

## CPC

- H10K 59/87: {Passivation; Containers; Encapsulations}
- H10K 59/40: OLEDs integrated with touch screens
- H10K 59/871: {Self-supporting sealing arrangements}
- H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 59/8794: {Arrangements for heating and cooling}
- H10H 20/815: having stress relaxation structures, e.g. buffer layers
- H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings
- H10H 20/85: Packages
- H10H 20/8506: {Containers}
- H10H 20/858: Means for heat extraction or cooling
- H10K 77/111: {Flexible substrates}
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.

## Claims

### Claim 1

A display device comprising:
a display panel which comprises a first area and a second area located around the first area; and
an under-panel sheet which is located under the display panel and overlaps the first area and the second area,
wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the first area is generally located in a first plane, and the second area is located in a second plane different from the first plane.

### Claim 3 (depends on 1)

The display device of claim 1, wherein the strength reinforcing member comprises polyimide (PI) or polyethylene terephthalate (PET).

### Claim 4 (depends on 3)

The display device of claim 3, wherein the thickness of the strength reinforcing member is 25 to 50 μm.

### Claim 5 (depends on 3)

The display device of claim 3, wherein the thickness of the buffer member is 100 to 150 μm.

### Claim 6 (depends on 1)

The display device of claim 1, further comprising a first adhesive member which is disposed between the strength reinforcing member and the buffer member.

### Claim 7 (depends on 6)

The display device of claim 6, wherein a thickness of the first adhesive member is 20 to 50 μm.

### Claim 8 (depends on 6)

The display device of claim 6, wherein a ratio of the thickness of the strength reinforcing member to the thickness of the first adhesive member is 1 to 2.5 times.

### Claim 9 (depends on 1)

The display device of claim 1, wherein the under-panel sheet further comprises a heat dissipation member.

### Claim 10 (depends on 9)

The display device of claim 9, further comprising a second adhesive member which is disposed between the heat dissipation member and the strength reinforcing member.

### Claim 11 (depends on 10)

The display device of claim 10, wherein the second adhesive member comprises a thermosetting epoxy or acrylic material.