Rollable organic light emitting display system

Patent metadata

Field	Value
Publication number	US-9698362-B2
Application number	US-201514840803-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Dec 1, 2014
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

Disclosed is a rollable organic light emitting display system capable of protecting an organic light emitting display device from an external impact. The rollable organic light emitting display system has an organic light emitting diode layer between two substrates, wherein the two substrates are capable of being rolled or unrolled, includes a protection film covering a lateral surface of at least one of the substrates so as to prevent the lateral surface of the at least one substrate from being damaged by an external impact when the two substrates are unrolled and the lateral surface of the two substrates is exposed to the external.

First claim

What is claimed is:

1. A rollable organic light emitting display system with an organic light emitting diode layer between two substrates, wherein the two substrates are capable of being rolled or unrolled, the system comprising:
a thin film transistor layer provided on a first substrate of the two substrates,
an organic light emitting diode layer provided on the thin film transistor layer; and
a protection film covering a lateral surface of at least one of the substrates so as to prevent the lateral surface of the at least one substrate from being damaged by an external impact when the two substrates are unrolled and the lateral surface of the two substrates is exposed to the external impact,
wherein the protection film includes:
a first protecting portion attached to a lower surface of the first substrate; and
a second protecting portion extending from one end of the first protecting portion along the lateral surface of the first substrate.

2. The rollable organic light emitting display system according to claim 1 , wherein the protection film covers front and lateral surfaces of any one substrate having the organic light emitting diode layer of the two substrates.

3. The rollable organic light emitting display system according to claim 1 , wherein the protection film covers front and lateral surfaces of any one substrate, to which light of the organic light emitting diode layer is emitted and transmitted, of the two substrates.

4. The rollable organic light emitting display system according to claim 3 , wherein a lateral surface of any one substrate protected by the protection film protrudes less than a lateral surface of the remaining substrate.

5. The rollable organic light emitting display system according to claim 4 , wherein the protection film has any one among a damage-preventing capability of 103 cm˜118 cm for a ball having a weight of 10 g, a damage-preventing capability of 41 cm˜50 cm for a ball having a weight of 28 g, and a damage-preventing capability of 27 cm˜35 cm for a ball having a weight of 40 g.

6. The rollable organic light emitting display system according to claim 1 , further comprising:
an encapsulation layer covering the organic light emitting diode layer,
wherein a second substrate of the two substrates is provided on the encapsulation layer, and the protection film is attached to a lateral surface of the first substrate.

7. The rollable organic light emitting display system according to claim 6 , wherein the second protecting portion contacts a lateral surface of the second substrate.

8. The rollable organic light emitting display system according to claim 7 , wherein the second protecting portion extending from the lateral surface of the first substrate contacts a lateral surface of the encapsulation layer.

9. The rollable organic light emitting display system according to claim 7 , wherein the second substrates protrudes more than the first substrate.

10. The rollable organic light emitting display system according to claim 9 , wherein the second protecting portion extending from the lateral surface of the first substrate contacts a lower surface of the second substrate which protrudes more than the first substrate.

11. The rollable organic light emitting display system according to claim 9 , wherein the protection film further includes a third protecting portion extending from one end of the second protecting portion along a lower surface of the second substrate which protrudes more than the first substrate.

12. The rollable organic light emitting display system according to claim 8 , wherein the second protecting portion extending from the lateral surface of the first substrate contacts the lateral surface of the second substrate.

13. The rollable organic light emitting display system according to claim 6 , wherein the protection film has any one among a damage-preventing capability of 103 cm˜118 cm for a ball having a weight of 10 g, a damage-preventing capability of 41 cm˜50 cm for a ball having a weight of 28 g, and a damage-preventing capability of 27 cm˜35 cm for a ball having a weight of 40 g.

14. The rollable organic light emitting display system according to claim 6 ,
wherein the first and second substrates are capable of being rolled onto a roller or unrolled from the roller, and
the protection film is attached to the lateral surface of the first substrate which is not parallel to a lengthwise direction of the roller.

15. The rollable organic light emitting display system according to claim 14 , wherein a gate driving integrated circuit is provided at a lateral side of the first substrate to which the protection film is attached.

16. The rollable organic light emitting display system according to claim 15 , wherein the encapsulation layer covers the gate driving integrated circuit.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Han Il

Classifications

• H01L51/5246

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic

• H01L51/0097 Primary

  Electricity · mapped topic

• H01L2251/5338

  Electricity · mapped topic

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title