Display device, module, and electronic device

• US 10,185,190 B2
• Filed: 05/02/2017
• Issued: 01/22/2019
• Est. Priority Date: 05/11/2016
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Koezuka, Junichi, Takase, Natsuko
• Primary Examiner(s): Pan, Jia X
• Application Number:
  US15/584,239
• Publication Number:
  US 20170329162A1
• Time in Patent Office: 630 Days
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133796 having conducting property
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
• CPC Class Codes: G02F 1/136 Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit G02F1/135 takes precedence
• CPC Class Codes: G02F 1/1362 Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence
• CPC Class Codes: G02F 1/136218 Shield electrodes
• CPC Class Codes: G09G 2300/0809 Several active elements per pixel in active matrix panels
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• 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

Display defects of a display device are reduced. The display quality of a display device is improved. A reliable display device is provided. A display device includes a substrate, a conductive layer over the substrate, and a transistor and a light-emitting element over the conductive layer. The transistor and the light-emitting element are each electrically insulated from the conductive layer. The transistor and the light-emitting element each overlap with the substrate with the conductive layer located therebetween. A constant potential is supplied to the conductive layer. The display device may further include a resin layer. In that case, the conductive layer overlaps with the substrate with the resin layer located therebetween. The resin layer has a thickness of more than or equal to 0.1 μm and less than or equal to 3 μm, for example. The resin layer has a 5% weight-loss temperature of lower than 400° C., for example.

Claims

1. A display device comprising:

a substrate;

a first conductive layer over the substrate;

a resin layer between the substrate and the first conductive layer; and

a transistor and a light-emitting element over the first conductive layer,

wherein the transistor and the light-emitting element are each electrically insulated from the first conductive layer,

wherein the transistor and the light-emitting element each overlap with the substrate with the first conductive layer located therebetween, and

wherein a constant potential is supplied to the first conductive layer.

2. The display device according to claim 1, wherein the resin layer has a thickness of more than or equal to 0.1 μ

m and less than or equal to 3 μ

m.

3. The display device according to claim 1, wherein the resin layer has a 5% weight-loss temperature of lower than 400°

C.

4. The display device according to claim 1, wherein the resin layer has an opening, and wherein at least a portion of the first conductive layer is exposed through the opening in the resin layer.

5. The display device according to claim 4,

wherein the substrate has an opening,

wherein a portion of the opening in the substrate overlaps with the opening in the resin layer, and

wherein at least a portion of the first conductive layer is exposed through the opening in the substrate.

6. The display device according to claim 1, further comprising an inorganic insulating layer over the first conductive layer,

wherein the transistor and the light-emitting element are over the inorganic insulating layer.

7. The display device according to claim 1, wherein the transistor comprises an oxide semiconductor in a channel formation region.

8. The display device according to claim 1, wherein the substrate has flexibility.

9. The display device according to claim 1, wherein the first conductive layer comprises an oxide conductor.

20. A module comprising:

the display device according to claim 1; and

a first connection wiring,

wherein the display device comprises a second conductive layer,

wherein the second conductive layer is electrically insulated from the first conductive layer, and

wherein the second conductive layer is electrically connected to the first connection wiring.

21. The module according to claim 20, wherein the second conductive layer overlaps with the substrate with the first conductive layer located therebetween.

22. The module according to claim 20, wherein the second conductive layer overlaps with the substrate with the first conductive layer not located therebetween.

23. The module according to claim 20, further comprising a flexible printed circuit board,

wherein the flexible printed circuit board comprises the first connection wiring and a second connection wiring, and

wherein the first conductive layer is electrically connected to the second connection wiring.

24. An electronic device comprising:

the module according to claim 20; and

at least one of a sensor, an antenna, a battery, a housing, a camera, a speaker, a microphone, and an operation button.

10. A display device comprising:

a substrate;

a first resin layer over the substrate;

a first conductive layer over the first resin layer;

a second resin layer over the first conductive layer; and

a transistor and a light-emitting element over the second resin layer,

wherein the transistor and the light-emitting element are each electrically insulated from the first conductive layer,

wherein the transistor and the light-emitting element each overlap with the substrate with the first conductive layer located therebetween,

wherein the first conductive layer overlaps with the substrate with the first resin layer located therebetween, and

wherein a constant potential is supplied to the first conductive layer.

11. The display device according to claim 10, further comprising a first inorganic insulating layer over the first conductive layer,

wherein the second resin layer is over the first inorganic insulating layer.

12. The display device according to claim 11, further comprising a second inorganic insulating layer over the second resin layer,

wherein the transistor and the light-emitting element are over the second inorganic insulating layer.

13. The display device according to claim 10, wherein the first resin layer has a thickness of more than or equal to 0.1 μ

m and less than or equal to 3 μ

m.

14. The display device according to claim 10, wherein the first resin layer has a 5% weight-loss temperature of lower than 400°

C.

15. The display device according to claim 10,

wherein the first resin layer has an opening, and

wherein at least a portion of the first conductive layer is exposed through the opening in the first resin layer.

16. The display device according to claim 15,

wherein the substrate has an opening,

wherein a portion of the opening in the substrate overlaps with the opening in the first resin layer, and

wherein at least a portion of the first conductive layer is exposed through the opening in the substrate.

17. The display device according to claim 10, wherein the transistor comprises an oxide semiconductor in a channel formation region.

18. The display device according to claim 10, wherein the substrate has flexibility.

19. The display device according to claim 10, wherein the first conductive layer comprises an oxide conductor.