Flexible display device

Patent metadata

Field	Value
Publication number	US-11515503-B2
Application number	US-202017110831-A
Country	US
Kind code	B2
Filing date	Dec 3, 2020
Priority date	Dec 4, 2019
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

According to an aspect of the present disclosure, a flexible display device includes: a display panel which includes a display area and a bending area extending from one side of the display area to be bent; a first back plate disposed on a rear surface of the display area; a first cushion tape disposed on a rear surface of the first back plate; a heat radiation sheet disposed on a rear surface of the first cushion tape; a second cushion tape which is disposed below the heat radiation sheet and absorbs a damage from the outside; and a bottom hole which passes through the first cushion tape, the heat radiation sheet, and the second cushion tape.

First claim

What is claimed is:

1. A flexible display device, comprising:
a display panel which includes a display area and a bending area extending from one side of the display area to be bent;
a first back plate disposed on a rear surface of the display area;
a first cushion tape disposed on a rear surface of the first back plate;
a heat radiation sheet disposed on a rear surface of the first cushion tape;
a second cushion tape which is disposed below the heat radiation sheet and absorbs a damage from the outside; and
a bottom hole which passes through the first cushion tape, the heat radiation sheet, and the second cushion tape.

2. The flexible display device according to claim 1 , further comprising:
a circuit element which is connected to an end of the display panel and is disposed on the rear surface of the first cushion tape.

3. The flexible display device according to claim 2 , wherein the bottom hole passes through the circuit element.

4. The flexible display device according to claim 2 , wherein the bottom hole is formed to be spaced apart from the circuit element.

5. The flexible display device according to claim 2 , wherein the second cushion tape completely overlaps the circuit element.

6. The flexible display device according to claim 2 , further comprising:
an insulating tape which is in contact with a rear surface of the circuit element.

7. The flexible display device according to claim 2 , further comprising:
an insulating tape which is in contact with a rear surface of the second cushion tape.

8. The flexible display device according to claim 1 , wherein the second cushion tape is in contact with an inner surface of the first cushion tape and an inner surface of the heat radiation sheet.

9. The flexible display device according to claim 1 , wherein the second cushion tape is configured by acrylic foam.

10. A flexible display device, comprising:
a display panel which includes a first flat portion, a second flat portion, and a curved portion located between the first flat portion and the second flat portion;
a first back plate disposed on a rear surface of the first flat portion of the display panel;
a second back plate disposed on a rear surface of the second flat portion of the display panel;
a first cushion tape and a heat radiation sheet disposed between the first back plate and the second back plate;
a bottom hole which passes through the first cushion tape and the heat radiation sheet; and
a second cushion tape which encloses an entrance of the bottom hole and absorbs a damage from the outside.

11. The flexible display device according to claim 10 , further comprising:
a circuit element which is connected to one end of the second flat portion and a rear surface of the heat radiation sheet.

12. The flexible display device according to claim 11 , wherein the bottom hole passes through the circuit element.

13. The flexible display device according to claim 11 , wherein the bottom hole is formed inside more than the circuit element so that the bottom hole does not pass through the circuit element.

14. The flexible display device according to claim 11 , wherein an end of the second cushion tape is disposed inside more than an end of the circuit element.

15. The flexible display device according to claim 11 , further comprising:
an insulating tape which covers the circuit element.

16. The flexible display device according to claim 10 , wherein the second cushion tape extends to an inner surface of the first cushion tape and an inner surface of the heat radiation sheet.

17. The flexible display device according to claim 10 , wherein the second cushion tape is configured by acrylic foam.

Assignees

• Lg Display Co Ltd

Inventors

• Shin Myeongah
• Kim Jin Woo

Classifications

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G06F1/1652

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• G06F2203/04102

  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 · CPC title

• H01L27/3276

  Electricity · mapped topic