Light-emitting device method for manufacturing the same, and cellular phone

• US 10,269,883 B2
• Filed: 12/12/2013
• Issued: 04/23/2019
• Est. Priority Date: 11/18/2008
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Hatano, Kaoru, Seo, Satoshi, Yamazaki, Shunpei
• Primary Examiner(s): Talukder, Md
• Application Number:
  US14/103,990
• Publication Number:
  US 20140099999A1
• Time in Patent Office: 1,958 Days
• Field of Search: 345156, 345173, 345204, 345512
• CPC Class Codes: H04M 1/0269 mounted in a fixed curved configuration, e.g. display curved around the edges of the telephone housing
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/846 comprising getter material or desiccants
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/127 comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates
• CPC Class Codes: H10K 59/1275 Electrical connections of the two substrates
• CPC Class Codes: H10K 59/871 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/874 including getter material or desiccant
• CPC Class Codes: H10K 71/50 Forming devices by joining two substrates together, e.g. lamination techniques
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention relates to: a light-emitting device which includes a first flexible substrate having a first electrode, a light-emitting layer over the first electrode, and a second electrode with a projecting portion over the light-emitting layer and a second flexible substrate having a semiconductor circuit and a third electrode electrically connected to the semiconductor circuit, in which the projecting portion of the second electrode and the third electrode are electrically connected to each other, a method for manufacturing the light-emitting device; and a cellular phone which includes a housing incorporating the light-emitting device and having a longitudinal direction and a lateral direction, in which the light-emitting device is disposed on a front side and in an upper portion in the longitudinal direction of the housing.

Claims

1. An electronic device comprising a display panel having a display region, and a housing incorporating the display panel,

wherein the display panel comprises a first flexible substrate, a second flexible substrate, a display element, and a thin film transistor electrically connected to the display element and disposed between the first flexible substrate and the second flexible substrate,

wherein the thin film transistor is formed over an insulating film,

wherein the display panel comprises a driver circuit comprising thin film transistors over the insulating film,

wherein the display panel includes a first region disposed at a front of the housing, the display panel being flat at least in the first region,

wherein the display panel is bent at least in a region between the first region and the driver circuit, and

wherein the display region overlaps with the region where the display panel is bent.

2. The electronic device according to claim 1, wherein the thin film transistor comprises a channel formation region which comprises an oxide semiconductor material.

3. The electronic device according to claim 1, wherein the thin film transistor comprises a channel formation region which comprises polycrystalline silicon.

4. The electronic device according to claim 1, wherein the electronic device is a portable telephone.

5. The electronic device according to claim 1, further comprising an adhesive layer between the insulating film and one of the pair of flexible substrates, wherein the insulating film is between the adhesive layer and the one of the pair of flexible substrates.

6. The electronic device according to claim 1, wherein each of the pair of flexible substrates is a plastic substrate having a light-transmitting property.

7. The electronic device according to claim 1, wherein each of the pair of flexible substrates comprises a polyester, a resina polyacrylonitrile resin, a polyimide resin, a polymethyl methacrylate resin, a polycarbonate (PC) resin, a polyethersulfone (PES) resin, a polyamide resin, a cycloolefin resin, a polystyrene resin, a polyamide imide resin, or a polyvinylchloride resin.

8. The electronic device according to claim 1, wherein the insulating film comprises at least one film selected from the group consisting of a silicon oxide film, a silicon nitride film, a silicon oxide film containing nitrogen, and a silicon nitride film containing oxygen.

9. The electronic device according to claim 1,

wherein the driver circuit overlaps with the first region.

10. The electronic device according to claim 1, wherein the display panel is bent so that the display region is continuously provided from a front of the housing to a rear of the housing.

11. An electronic device comprising:

a housing;

an EL panel comprising a first flexible substrate, a second flexible substrate and a thin film transistor between the first flexible substrate and the second flexible substrate, wherein the EL panel comprises a display region, the display region comprising a first region, the first region disposed at a front of the housing,

wherein the EL panel is flat at least in the first region;

wherein the thin film transistor is formed over an insulating film;

wherein the EL panel comprises a driver circuit comprising thin film transistors over the insulating film,

wherein the EL panel is bent at least in a region between the first region and the driver circuit, and

wherein the display region overlaps with the region where the EL panel is bent.

12. The electronic device according to claim 11, wherein the thin film transistor comprises a channel formation region which comprises an oxide semiconductor material.

13. The electronic device according to claim 11, wherein the thin film transistor comprises a channel formation region which comprises polycrystalline silicon.

14. The electronic device according to claim 11, wherein the electronic device is a portable telephone.

15. The electronic device according to claim 11, further comprising an adhesive layer between the insulating film and one of the pair of flexible substrates, wherein the insulating film is between the adhesive layer and the one of the pair of flexible substrates.

16. The electronic device according to claim 11, wherein each of the pair of flexible substrates is a plastic substrate having a light-transmitting property.

17. The electronic device according to claim 11, wherein each of the pair of flexible substrates comprises a polyester, a resina polyacrylonitrile resin, a polyimide resin, a polymethyl methacrylate resin, a polycarbonate (PC) resin, a polyethersulfone (PES) resin, a polyamide resin, a cycloolefin resin, a polystyrene resin, a polyamide imide resin, or a polyvinylchloride resin.

18. The electronic device according to claim 11, wherein the insulating film comprises at least one film selected from the group consisting of a silicon oxide film, a silicon nitride film, a silicon oxide film containing nitrogen, and a silicon nitride film containing oxygen.

19. The electronic device according to claim 11,

wherein the driver circuit overlaps with the first region.

20. The electronic device according to claim 11, wherein the EL panel is bent so that the display region is continuously provided from a front of the housing to a rear of the housing.

21. An electronic device comprising:

a housing;

a display panel having a display region, wherein the display panel comprises a first flexible substrate, a second flexible substrate, a display element, and a thin film transistor electrically connected to the display element and disposed between the first flexible substrate and the second flexible substrate; and

a touch panel,

wherein the thin film transistor is formed over an insulating film,

wherein the display panel comprises a driver circuit comprising thin film transistors over the insulating film,

wherein the display panel includes a first region disposed at a front of the housing,

wherein the display panel being flat at least in the first region,

wherein the display panel is bent at least in a region between the first region and the driver circuit, and

wherein the display region and the touch panel overlap with the region where the display panel is bent.

22. The electronic device according to claim 21, wherein the thin film transistor comprises a channel formation region which comprises an oxide semiconductor material.

23. The electronic device according to claim 21, wherein the thin film transistor comprises a channel formation region which comprises polycrystalline silicon.

24. The electronic device according to claim 21, wherein the electronic device is a portable telephone.

25. The electronic device according to claim 21, further comprising an adhesive layer between the insulating film and one of the pair of flexible substrates, wherein the insulating film is between the adhesive layer and the one of the pair of flexible substrates.

26. The electronic device according to claim 21, wherein each of the pair of flexible substrates is a plastic substrate having a light-transmitting property.

27. The electronic device according to claim 21, wherein each of the pair of flexible substrates comprises a polyester, a resina polyacrylonitrile resin, a polyimide resin, a polymethyl methacrylate resin, a polycarbonate (PC) resin, a polyethersulfone (PES) resin, a polyamide resin, a cycloolefin resin, a polystyrene resin, a polyamide imide resin, or a polyvinylchloride resin.

28. The electronic device according to claim 21, wherein the insulating film comprises at least one film selected from the group consisting of a silicon oxide film, a silicon nitride film, a silicon oxide film containing nitrogen, and a silicon nitride film containing oxygen.

29. The electronic device according to claim 21, wherein the display panel is an EL panel.

30. The electronic device according to claim 21,

wherein the driver circuit overlaps with the first region.

31. The electronic device according to claim 21, wherein the display panel is bent so that the display region is continuously provided from a front of the housing to a rear of the housing.