Display device

• US 6,819,045 B2
• Filed: 09/06/2001
• Issued: 11/16/2004
• Est. Priority Date: 09/07/2000
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Okita, Hiroyuki, Ohsako, Junichi, Shimoda, Kazuhito
• Primary Examiner(s): Patel, Nimeshkumar D.
• Assistant Examiner(s): Santiago, Mariceli
• Application Number:
  US09/947,703
• Publication Number:
  US 20020071082A1
• Time in Patent Office: 1,167 Days
• Field of Search: 439/67, 439/77, 439/329, 349/150, 313/511, 313/512
• US Class Current: 313/511
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/179 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/18 Tiled displays

Abstract

A display device comprises a display pail having a flexible panel substrate serving as a display elements disposed lengthwise and breadthwise on a surface opposite to the display screen of the panel substrate; and driving circuit parts having flexible driving circuit substrates on which semiconductor elements made of flexile semiconductor materials are mounted. Accordingly, the completely flexible display device in which not only the display part, but also the driving circuit parts have flexibility can be provided.

Claims

1. A display device comprising:

a display part having a flexible panel substrate serving as a display screen and display elements disposed lengthwise and breadthwise on a surface opposite to the display screen of the panel substrate; and

driving circuit parts having flexible driving circuit substrates on which semiconductor elements made of flexible semiconductor materials are mounted.

2. The display device according to claim 1, wherein the flexible semiconductor material is an organic semiconductor material.

3. The display device according to claim 2, wherein the organic semiconductor material is pentacene.

4. The display device according to claim 2, wherein the organic semiconductor material is polyacetylene.

5. The display device according to claim 1, wherein the display part is connected to the driving circuit parts by flexible cables.

6. The display device according to claim 1, wherein the area in the panel substrate on which the display elements are disposed is finely divided into a plurality of areas by driving wires for driving the display elements and a plurality of driving circuit substrates are arranged respectively so as to correspond to the areas.

7. The display device according to claim 6, wherein the driving circuit substrates are arranged in the side of the panel substrate on which the display elements are disposed and are connected through bumps to the display elements by terminals.

8. The display device according to claim 6, wherein a plurality of driving circuit substrates are joined by cascade connection and the display elements are driven in accordance with an image signal supplied from a signal supply device.

9. The display device according to claim 1, wherein the display elements are arranged in a passive matrix.

10. The display device according to claim 1, wherein the display elements are arranged in an active matrix.

11. The display device according to claim 1, wherein the display elements are organic electroluminescence elements.

12. The display device according to claim 1, wherein the display elements are inorganic electroluminescence elements.

13. The display device according to claim 1, wherein the display elements are liquid crystal elements.

14. The display device according to claim 1, wherein the driving circuit substrates are film type metal substrates.

15. The display device according to claim 1, wherein the driving circuit substrates are film type plastic substrates.

16. The display device according to claim 15, wherein the film type plastic substrate has a gas barrier layer on its main surface.

17. The display device according to claim 1, wherein the driving circuit substrates are composed of organic semiconductor materials.

18. The display device according to claim 17, wherein the organic semiconductor material is pentacene.

19. The display device according to claim 17, wherein the organic semiconductor material is polyacetylene.

20. The display device according to claim 1, wherein the driving circuit substrate is a sheet type polymer battery.

21. A display device comprising:

a display part having a flexible panel substrate serving as a display screen and display elements disposed lengthwise and breadthwise on a surface opposite to the display screen of the panel substrate; and

flexible semiconductor elements made of flexible semiconductor materials which are directly mounted on the side of the panel substrate opposite to the side of the display part on which the display elements are arranged.

22. A display device comprising:

a flexible panel substrate serving as a display screen;

driving circuit parts having flexible semiconductor elements made of flexible semiconductor materials on the panel substrate; and

a display part having display elements disposed lengthwise and breadthwise on the driving circuit parts.