ORGANIC LIGHT EMITTING DIODE DISPLAY

• US 20160072094A1
• Filed: 02/02/2015
• Published: 03/10/2016
• Est. Priority Date: 09/10/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Dong Cheol
• Granted Patent: US 9,620,742 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/87 Arrangements for heating or cooling
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/87 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/8794 Arrangements for heating and cooling

Abstract

An organic light emitting diode display includes: an organic light emitting diode panel; a first composite sheet including a first heat dissipation sheet and a first buffer sheet below the organic light emitting diode panel; a second composite sheet including a second heat dissipation sheet and a second buffer sheet and disposed below the organic light emitting diode panel and spaced apart from the first composite sheet; a first heat source below the first composite sheet; and a second heat source above the second composite sheet.

Claims

1. An organic light emitting diode display comprising:

an organic light emitting diode panel;

a first composite sheet comprising a first heat dissipation sheet and a first buffer sheet below the organic light emitting diode panel;

a second composite sheet comprising a second heat dissipation sheet and a second buffer sheet below the organic light emitting diode panel and spaced apart from the first composite sheet;

a first heat source below the first composite sheet; and

a second heat source above the second composite sheet.

2. The organic light emitting diode display of claim 1, wherein the organic light emitting diode panel comprises a first substrate comprising organic light emitting diodes and a second substrate on the first substrate,

wherein the first composite sheet further comprises a first adhesive sheet to bond the first substrate and the first buffer sheet to each other, and the first heat dissipation sheet is below the first buffer sheet, and

wherein the second composite sheet further comprises a second adhesive sheet to bond the first substrate and the second buffer sheet to each other, and the second heat dissipation sheet is below the second buffer sheet.

3. The organic light emitting diode display of claim 1, wherein the organic light emitting diode panel comprises a first substrate comprising organic light emitting diodes and a second substrate on the first substrate,

wherein the first composite sheet further comprises a first adhesive sheet to bond the first substrate and the first buffer sheet to each other, and the first heat dissipation sheet is below the first buffer sheet, and

wherein the second composite sheet further comprises a second adhesive sheet to bond the first substrate and the second heat dissipation to each other, and the second buffer sheet is below the second heat dissipation sheet.

4. The organic light emitting diode display of claim 1, further comprising a first printed circuit board below the first heat dissipation sheet and a second printed circuit board, at least a portion of the second printed circuit board being below the second heat dissipation sheet, wherein a support member for supporting the organic light emitting diode panel is between the first printed circuit board and the second printed circuit board.

5. The organic light emitting diode display of claim 4, wherein the first printed circuit board is below the support member, and the first printed circuit board extends below a lower portion of the second heat dissipation sheet, and

wherein the second printed circuit board is on the support member, and the second printed circuit board extends below a lower portion of the first heat dissipation sheet.

6. The organic light emitting diode display of claim 4, wherein the first printed circuit board comprises the first heat source, and the first heat source comprises at least one selected from the group consisting of an application processor (AP) and a direct current to direct current (DC-DC) converter.

7. The organic light emitting diode display of claim 6, wherein the second printed circuit board is electrically coupled to the second heat source, and the second heat source comprises an integrated circuit chip mounted on the organic light emitting diode panel.

8. The organic light emitting diode display of claim 2, wherein the first substrate comprises a base substrate comprising a glass substrate, the first adhesive sheet bonds the glass substrate and the first buffer sheet to each other, and the second adhesive sheet bonds the glass substrate and the second buffer sheet to each other.

9. The organic light emitting diode display of claim 3, wherein the first substrate comprises a base substrate comprising a glass substrate, the first adhesive sheet bonds the glass substrate and the first buffer sheet to each other, and the second adhesive sheet bonds the glass substrate and the second heat dissipation sheet to each other.

10. The organic light emitting diode display of claim 2, wherein the first substrate comprises a base substrate comprising a first polymer resin thin film,

wherein the organic light emitting diode display further comprises a protective film between the first polymer resin thin film and the first adhesive sheet and between the first polymer resin thin film and the second adhesive sheet to protect a lower portion of the first polymer resin thin film, and

wherein the protective film comprises a second polymer resin thin film of a protective layer and an adhesive layer for bonding the protective layer to the first polymer resin thin film.

11. The organic light emitting diode display of claim 3, wherein the first substrate comprises a base substrate comprising a first polymer resin thin film,

wherein the organic light emitting diode display further comprises a protective film between the first polymer resin thin film and the first adhesive sheet and between the first polymer resin thin film and the second adhesive sheet to protect a lower portion of the first polymer resin thin film,

wherein the protective film comprises a second polymer resin thin film of a protective layer and an adhesive layer for bonding the protective layer to the first polymer resin thin film.

12. The organic light emitting diode display of claim 1, wherein each of the first heat dissipation sheet and the second heat dissipation sheet comprises at least one selected from the group consisting of a graphite sheet and a metal sheet.

13. The organic light emitting diode display of claim 1, wherein each of the first buffer sheet and the second buffer sheet comprises a polymer resin foam.

14. The organic light emitting diode display of claim 1, further comprising:

a polarizer on the organic light emitting diode panel;

a cover window above the polarizer; and

a resin layer between the organic light emitting diode panel and the cover window.

15. An organic light emitting diode display comprising:

an organic light emitting diode panel;

a first composite sheet comprising a first heat dissipation sheet and a first buffer sheet below the organic light emitting diode panel;

a second composite sheet comprising a second heat dissipation sheet and a second buffer sheet below the organic light emitting diode panel;

a first region where the first composite sheet and the second composite sheet are separated and spaced apart from each other;

a second region where the first composite sheet and the second composite sheet are coupled to each other;

a first heat source below the first composite sheet in the first region; and

a second heat source above the second composite sheet in the first region.

16. The organic light emitting diode display of claim 15, wherein the organic light emitting diode panel comprises a first substrate comprising organic light emitting diodes and a second substrate on the first substrate,

wherein the first composite sheet further comprises a first adhesive sheet to bond the first substrate and the first buffer sheet to each other, and the first heat dissipation sheet is below the first buffer sheet, and

wherein the second composite sheet further comprises a second adhesive sheet to bond the first substrate and the second buffer sheet to each other, and the second heat dissipation sheet is below the second buffer sheet.