Display device

• US 9,508,756 B2
• Filed: 10/15/2015
• Issued: 11/29/2016
• Est. Priority Date: 05/13/2002
• Status: Expired due to Term

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Murakami, Satoshi, Osame, Mitsuaki
• Primary Examiner(s): Huynh, Andy
• Application Number:
  US14/884,257
• Publication Number:
  US 20160086982A1
• Time in Patent Office: 411 Days
• Field of Search: 257/40, 257/59, 257/72, 257/E21.413, 257/E21.414
• US Class Current: 1/1
• CPC Class Codes: H01L 27/1214 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H01L 27/1248 with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement
• CPC Class Codes: H01L 27/1255 integrated with passive devices, e.g. auxiliary capacitors
• CPC Class Codes: H01L 29/4958 with a multiple layer structure
• CPC Class Codes: H01L 29/4966 the conductor material next to the insulator being a composite material, e.g. organic material, TiN, MoSi2 H01L29/4908, H01L29/4983 take precedence
• CPC Class Codes: H01L 29/78645 with multiple gate
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• 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 59/871 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 59/878 comprising reflective means

Abstract

Disclosed is a display device including a seal material and a sealing material. The seal material surrounds a pixel portion and the sealing material overlaps with at least any of a driver circuit and a protective circuit. The pixel portion includes a planarization layer and an organic resin film each having an opening, an end portion of which is rounded. The pixel portion further includes a first electrode, a light-emitting member over the first electrode, and a second electrode over the light-emitting member. Part of the first electrode and part of the organic resin film are located in the opening of the planarization layer. Part of the light-emitting member and Part of the second electrode are located in the opening of the organic resin film.

Claims

1. A display device comprising:

a pixel portion;

a driver circuit;

a protective circuit;

a seal material surrounding the pixel portion; and

a sealing material over the pixel portion, the driver circuit, the protective circuit, and the seal material,

wherein the seal material overlaps with at least any of the driver circuit and the protective circuit,

wherein the pixel portion comprises;

a semiconductor film;

a gate insulating film over the semiconductor film;

a gate electrode over the gate insulating film;

a first insulating layer over the gate electrode;

a second insulating layer over the first insulating layer;

a first conductive film and a second conductive film over the second insulating layer and electrically connected to the semiconductor film;

a first planarization layer over the first conductive film and the second conductive film;

a first electrode over the first planarization layer and the first conductive film;

an organic resin film over the first electrode;

a light-emitting member over the first electrode and the organic resin film;

a second electrode over the light-emitting member; and

a passivation film over the second electrode,

wherein the first planarization layer comprises a first opening,

wherein an end portion of the first planarization layer at the first opening is rounded,

wherein the organic resin film comprises a second opening,

wherein an end portion of the organic resin film at the second opening is rounded,

wherein part of the first electrode and part of the organic resin film are located in the first opening, and

wherein part of the light-emitting member and part of the second electrode are located in the second opening.

2. The display device according to claim 1, wherein the gate electrode comprises a first gate electrode and a second gate electrode over the first gate electrode.

3. The display device according to claim 1, wherein the gate electrode comprises tantalum nitride and tungsten.

4. The display device according to claim 1, wherein the sealing material comprises a concave portion in which a hygroscopic agent is provided.

5. The display device according to claim 1, wherein the pixel portion, the driver circuit, the protective circuit, and the sealing material are provided over a substrate.

6. The display device according to claim 1, further comprising a second planarization layer between the second insulating layer and the first conductive film, wherein the second planarization layer is an inorganic insulating film.

7. The display device according to claim 1, wherein the first conductive film and the second conductive film are on and in contact with an upper surface of the semiconductor film.

8. A display device comprising:

a pixel portion;

a driver circuit;

a protective circuit;

a seal material surrounding the pixel portion; and

a sealing material over the pixel portion, the driver circuit, the protective circuit, and the seal material,

wherein the seal material overlaps with at least any of the driver circuit and the protective circuit,

wherein the pixel portion comprises;

a semiconductor film;

a gate insulating film over the semiconductor film;

a gate electrode over the gate insulating film;

a first insulating layer over the gate electrode;

a barrier layer over the first insulating layer;

an electrode and a power source wiring over the barrier layer and electrically connected to the semiconductor film;

a first planarization layer over the electrode and the power source wiring;

a first electrode over the first planarization layer and the electrode;

an organic resin film over the first electrode;

a light-emitting member over the first electrode and the organic resin film;

a second electrode over the light-emitting member; and

a passivation film over the second electrode,

wherein the first planarization layer comprises a first opening,

wherein an end portion of the first planarization layer at the first opening is rounded,

wherein the organic resin film comprises a second opening,

wherein an end portion of the organic resin film at the second opening is rounded,

wherein part of the first electrode and part of the organic resin film are located in the first opening, and

wherein part of the light-emitting member and part of the second electrode are located in the second opening.

9. The display device according to claim 8, wherein the gate electrode comprises a first gate electrode and a second gate electrode over the first gate electrode.

10. The display device according to claim 8, wherein the gate electrode comprises tantalum nitride and tungsten.

11. The display device according to claim 8, wherein the sealing material comprises a concave portion in which a hygroscopic agent is provided.

12. The display device according to claim 8, wherein the pixel portion, the driver circuit, the protective circuit, and the sealing material are provided over a substrate.

13. The display device according to claim 8, further comprising a second planarization layer between the barrier layer and the first electrode, wherein the second planarization layer is an inorganic insulating film.

14. The display device according to claim 8, wherein the electrode and the power source wiring are on and in contact with an upper surface of the semiconductor film.

15. A display device comprising:

a pixel portion;

a driver circuit;

a protective circuit;

a seal material surrounding the pixel portion; and

a sealing material over the pixel portion, the driver circuit, the protective circuit, and the seal material,

wherein the seal material overlaps with at least any of the driver circuit and the protective circuit,

wherein the pixel portion comprises;

a semiconductor film;

a gate insulating film over the semiconductor film;

a gate electrode over the gate insulating film;

a first insulating layer over the gate electrode;

a second insulating layer over the first insulating layer;

a first conductive film and a second conductive film over the second insulating layer and electrically connected to the semiconductor film;

a first planarization layer over the first conductive film and the second conductive film;

a first electrode over the first planarization layer and the first conductive film;

an organic resin film over the first electrode;

a light-emitting member over the first electrode and the organic resin film;

a second electrode over the light-emitting member; and

a passivation film over the second electrode,

wherein the first planarization layer comprises a first opening,

wherein an end portion of the first planarization layer at the first opening is rounded,

wherein the organic resin film comprises a second opening,

wherein an end portion of the organic resin film at the second opening is rounded,

wherein part of the first electrode and part of the organic resin film are located in the first opening,

wherein part of the light-emitting member and part of the second electrode are located in the second opening, and

wherein the seal material is any of a glass material, a metallic material, a ceramic material, and a plastic material.

16. The display device according to claim 15, wherein the gate electrode comprises a first gate electrode and a second gate electrode over the first gate electrode.

17. The display device according to claim 15, wherein the gate electrode comprises tantalum nitride and tungsten.

18. The display device according to claim 15, wherein the sealing material comprises a concave portion in which a hygroscopic agent is provided.

19. The display device according to claim 15, wherein the pixel portion, the driver circuit, the protective circuit, and the sealing material are provided over a substrate.

20. The display device according to claim 15, further comprising a second planarization layer between the second insulating layer and the first conductive film, wherein the second planarization layer is an inorganic insulating film.

21. The display device according to claim 15, wherein the first conductive film and the second conductive film are on and in contact with an upper surface of the semiconductor film.