Display device and electronic apparatus

• US 8,471,259 B2
• Filed: 06/25/2012
• Issued: 06/25/2013
• 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:
  US13/531,610
• Publication Number:
  US 20120261667A1
• Time in Patent Office: 365 Days
• Field of Search: 257/40, 257/59, 257/72, 257/E21.033, 257/E21.413, 257/E21.414, 257/E29.117
• US Class Current: 257/59
• 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 and an electronic apparatus incorporating the display device. The display device includes a transistor and a planarization film over the transistor. The planarization film has an opening where an edge portion is rounded. The display device further includes a first electrode over the planarization film and an organic resin film over the first electrode. The organic resin film also has an opening where an edge portion is rounded. The organic resin film is located in the opening of the planarization film. The first electrode and the transistor are electrically connected to each other through a conductive film. The first electrode is in contact with a top surface of the conductive film. Over the first electrode, a light-emitting member and a second electrode are provided.

Claims

1. A display device comprising:

a thin film transistor comprising;

a semiconductor film;

a first insulating film over the semiconductor film; and

a gate electrode over the first insulating film;

a second insulating film over the thin film transistor, wherein the second insulating film is a silicon nitride film;

a conductive film over the second insulating film;

a planarization film over the conductive film, wherein the planarization film has a first opening portion;

a first electrode over the planarization film and in the first opening portion, wherein the first electrode is electrically connected to the thin film transistor through the conductive film;

an organic resin film over the first electrode, wherein the organic resin film has a second opening portion;

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

a second electrode over the light-emitting member,

wherein a first edge portion of the first opening portion is rounded,

wherein a second edge portion of the second opening portion is rounded,

wherein the organic resin film is provided in the first opening portion,

wherein a bottom of the second opening portion does not overlap with a bottom of the first opening portion, and

wherein the first electrode is in contact with a top surface of the conductive film.

2. The display device according to claim 1, further comprising a third insulating film over the second electrode, wherein the third insulating film is a silicon nitride film.

3. The display device according to claim 1, wherein the first insulating film is a silicon oxynitride film.

4. The display device according to claim 1, wherein the gate electrode is a tantalum nitride film.

5. The display device according to claim 1, wherein the gate electrode is a tungsten film.

6. The display device according to claim 1, wherein the planarization film is an inorganic insulating film.

7. The display device according to claim 1, wherein the first electrode is a transparent oxide conductive film.

8. The display device according to claim 1, wherein the organic resin film is a photosensitive organic resin film.

9. An electronic apparatus comprising:

an audio output unit; and

the display device according to claim 1.

10. The electronic apparatus according to claim 9, wherein the electronic apparatus is a cellular phone.

11. An electronic apparatus comprising the display device according to claim 1, wherein the display device is incorporated in at least one selected from the group consisting of a television, a digital camera, a personal computer, a mobile computer, an image reproducing apparatus, a goggle-type display, a video camera, and a cellular phone.

12. A display device comprising:

a thin film transistor comprising;

a semiconductor film;

a first insulating film over the semiconductor film; and

a gate electrode over the first insulating film;

a second insulating film over the thin film transistor;

a conductive film over the second insulating film;

a planarization film over the conductive film, wherein the planarization film has a first opening portion;

a first electrode over the planarization film and in the first opening portion, wherein the first electrode is electrically connected to the thin film transistor through the conductive film;

an organic resin film over the first electrode, wherein the organic resin film has a second opening portion;

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

a second electrode over the light-emitting member,

wherein a first edge portion of the first opening portion is rounded,

wherein a second edge portion of the second opening portion is rounded,

wherein the organic resin film is provided in the first opening portion,

wherein a bottom of the second opening portion does not overlap with a bottom of the first opening portion, and

wherein the first electrode is in contact with a top surface of the conductive film.

13. The display device according to claim 12, further comprising a third insulating film over the second electrode, wherein the third insulating film is a silicon nitride film.

14. The display device according to claim 12, wherein the first insulating film is a silicon oxynitride film.

15. The display device according to claim 12, wherein the gate electrode is a tantalum nitride film.

16. The display device according to claim 12, wherein the gate electrode is a tungsten film.

17. The display device according to claim 12, wherein the planarization film is an inorganic insulating film.

18. The display device according to claim 12, wherein the first electrode is a transparent oxide conductive film.

19. The display device according to claim 12, wherein the organic resin film is a photosensitive organic resin film.

20. An electronic apparatus comprising:

an audio output unit; and

the display device according to claim 12.

21. The electronic apparatus according to claim 20, wherein the electronic apparatus is a cellular phone.

22. The display device according to claim 12, wherein the display device is incorporated in at least one selected from the group consisting of a television, a digital camera, a personal computer, a mobile computer, an image reproducing apparatus, a goggle-type display, a video camera, and a cellular phone.

23. An electronic apparatus comprising:

operation keys; and

a display portion comprising;

a thin film transistor comprising;

a semiconductor film;

a first insulating film over the semiconductor film; and

a gate electrode over the first insulating film;

a second insulating film over the thin film transistor;

a conductive film over the second insulating film;

a planarization film over the conductive film, wherein the planarization film has a first opening portion;

a first electrode over the planarization film and in the first opening portion, wherein the first electrode is electrically connected to the thin film transistor through the conductive film;

an organic resin film over the first electrode, wherein the organic resin film has a second opening portion;

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

a second electrode over the light-emitting member,

wherein a first edge portion of the first opening portion is rounded,

wherein a second edge portion of the second opening portion is rounded,

wherein the organic resin film is provided in the first opening portion,

wherein a bottom of the second opening portion does not overlap with a bottom of the first opening portion, and

wherein the first electrode is in contact with a top surface of the conductive film.

24. The electronic apparatus according to claim 23, further comprising a third insulating film over the second electrode, wherein the third insulating film is a silicon nitride film.

25. The electronic apparatus according to claim 23, wherein the first insulating film is a silicon oxynitride film.

26. The electronic apparatus according to claim 23, wherein the planarization film is an inorganic insulating film.

27. The electronic apparatus according to claim 23, wherein the first electrode is a transparent oxide conductive film.

28. The electronic apparatus according to claim 23, wherein the organic resin film is a photosensitive organic resin film.

29. The electronic apparatus according to claim 23, wherein the electronic apparatus is a cellular phone.