IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0169208
(2011-06-27)
|
등록번호 |
US-8188478
(2012-05-29)
|
우선권정보 |
JP-2000-061297 (2000-03-06) |
발명자
/ 주소 |
- Yamazaki, Shunpei
- Koyama, Jun
- Nakajima, Setsuo
|
출원인 / 주소 |
- Semiconductor Energy Laboratory Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
254 |
초록
▼
A display device includes a main body, a support stand, and a display portion. The display portion includes a pixel having a TFT and a capacitor. The capacitor includes a capacitor electrode on an insulating surface, an insulating film on the capacitor electrode, and a pixel electrode of the TFT on
A display device includes a main body, a support stand, and a display portion. The display portion includes a pixel having a TFT and a capacitor. The capacitor includes a capacitor electrode on an insulating surface, an insulating film on the capacitor electrode, and a pixel electrode of the TFT on the insulating film.
대표청구항
▼
1. A display device comprising: a thin film transistor, the thin film transistor comprising: a gate electrode formed over a substrate;an insulating film formed over the gate electrode;a semiconductor film formed over the insulating film;a source electrode formed over the semiconductor film; anda dra
1. A display device comprising: a thin film transistor, the thin film transistor comprising: a gate electrode formed over a substrate;an insulating film formed over the gate electrode;a semiconductor film formed over the insulating film;a source electrode formed over the semiconductor film; anda drain electrode formed over the semiconductor film;a pixel electrode comprising a transparent conductive material, formed over the substrate, and connected to the drain electrode;a source wiring being continuous to the source electrode, formed over the insulating film;a gate wiring being continuous to the gate electrode, formed over the substrate;a passivation film formed over the source electrode and the drain electrode, the passivation film being in contact with a portion of the semiconductor film between the source electrode and the drain electrode; anda capacitor, the capacitor comprising: a capacitor wiring formed over the substrate, wherein the capacitor wiring comprises a same material as the gate electrode;the insulating film formed over the capacitor wiring; andthe pixel electrode formed over the capacitor wiring with the insulating film interposed therebetween,wherein the capacitor wiring extends substantially in parallel with the gate wiring at least in a pixel portion,wherein the capacitor wiring is electrically connected to a terminal portion, andwherein the terminal portion is formed in an edge portion of the substrate. 2. The display device according to claim 1, wherein the pixel electrode is located below the passivation film. 3. The display device according to claim 1, wherein an end surface of the pixel electrode lies substantially in register with and an end surface of the drain electrode. 4. The display device according to claim 1, wherein the pixel electrode is in contact with an end surface of the semiconductor film and an end surface of the drain electrode. 5. The display device according to claim 1, further comprising a transparent conductive film formed over and along with the source wiring, comprising the same material as the pixel electrode. 6. The display device according to claim 5, wherein the transparent conductive film extends beyond both side edges of the source wiring. 7. The display device according to claim 5, wherein the transparent conductive film is electrically separated from the pixel electrode. 8. The display device according to claim 5, wherein an end surface of the transparent conductive film lies substantially in register with an end surface of the source electrode. 9. The display device according to claim 5, wherein the transparent conductive film is in contact with an end surface of the semiconductor film and an end surface of the source electrode. 10. The display device according to claim 1, wherein the terminal portion is electrically connected to a flexible printed circuit. 11. The display device according to claim 1, wherein the gate wiring is electrically connected to the terminal portion. 12. The display device according to claim 1, wherein the passivation film comprises at least one of a silicon oxide film, a silicon nitride film, a silicon oxynitride film, and a tantalum oxide film. 13. A display device comprising: a thin film transistor, the thin film transistor comprising: a gate electrode formed over a substrate;an insulating film formed over the gate electrode;a first semiconductor film formed over the insulating film;a source electrode formed over the first semiconductor film; anda drain electrode formed over the first semiconductor film;a pixel electrode comprising a transparent conductive material, formed over the substrate, and connected to the drain electrode;a source wiring being continuous to the source electrode, formed over the insulating film and a second semiconductor film;wherein the second semiconductor film is continuous to the first semiconductor film, and comprises the same material as the first semiconductor film,a gate wiring being continuous to the gate electrode, formed over the substrate;a passivation film formed over the source electrode and the drain electrode, the passivation film being in contact with a portion of the first semiconductor film between the source electrode and the drain electrode; anda capacitor, the capacitor comprising; a capacitor wiring formed over the substrate, wherein the capacitor wiring comprises a same material as the gate electrode;the insulating film formed over the capacitor wiring; andthe pixel electrode formed over the capacitor wiring with the insulating film interposed therebetween,wherein the capacitor wiring extends substantially in parallel with the gate wiring at least in a pixel portion,wherein the capacitor wiring is electrically connected to a terminal portion, andwherein the terminal portion is formed in an edge portion of the substrate. 14. The display device according to claim 13, wherein the pixel electrode is located below the passivation film. 15. The display device according to claim 13, wherein an end surface of the pixel electrode lies substantially in register with an end surface of the drain electrode. 16. The display device according to claim 13, wherein the pixel electrode is in contact with an end surface of the first semiconductor film and an end surface of the drain electrode. 17. The display device according to claim 13, further comprising a transparent conductive film formed over and along with the source wiring, comprising the same material as the pixel electrode. 18. The display device according to claim 17, wherein the transparent conductive film extends beyond both side edges of the source wiring. 19. The display device according to claim 17, wherein the transparent conductive film is electrically separated from the pixel electrode. 20. The display device according to claim 17, wherein an end surface of the transparent conductive film lies substantially in register with an end surface of the source electrode. 21. The display device according to claim 17, wherein the transparent conductive film is in contact with an end surface of the first semiconductor film and an end surface of the source electrode. 22. The display device according to claim 13, wherein the terminal portion is electrically connected to a flexible printed circuit. 23. The display device according to claim 13, wherein the gate wiring is electrically connected to the terminal portion. 24. The display device according to claim 13, wherein the passivation film comprises at least one of a silicon oxide film, a silicon nitride film, a silicon oxynitride film, and a tantalum oxide film. 25. A display device comprising: a thin film transistor, the thin film transistor comprising: a gate electrode formed over a substrate;an insulating film formed over the gate electrode;a semiconductor film formed over the insulating film;a source electrode formed over the semiconductor film; anda drain electrode formed over the semiconductor film;a pixel electrode comprising a transparent conductive material, formed over the substrate, and connected to the drain electrode;a source wiring being continuous to the source electrode, formed over the insulating film;a gate wiring being continuous to the gate electrode, formed over the substrate;a passivation film formed over the source electrode and the drain electrode, the passivation film being in contact with a portion of the semiconductor film between the source electrode and the drain electrode;an alignment film formed over the passivation film; anda capacitor, the capacitor comprising: a capacitor wiring formed over the substrate, wherein the capacitor wiring comprises a same material as the gate electrode;the insulating film formed over the capacitor wiring; andthe pixel electrode formed over the capacitor wiring with the insulating film interposed therebetween,wherein the capacitor wiring extends substantially in parallel with the gate wiring at least in a pixel portion,wherein the capacitor wiring is electrically connected to a terminal portion, andwherein the terminal portion is formed in an edge portion of the substrate. 26. The display device according to claim 25, wherein the pixel electrode is located below the passivation film. 27. The display device according to claim 25, wherein an end surface of the pixel electrode lies substantially in register with and an end surface of the drain electrode. 28. The display device according to claim 25, wherein the pixel electrode is in contact with an end surface of the semiconductor film and an end surface of the drain electrode. 29. The display device according to claim 25, further comprising a transparent conductive film formed over and along with the source wiring, comprising the same material as the pixel electrode. 30. The display device according to claim 29, wherein the transparent conductive film extends beyond both side edges of the source wiring. 31. The display device according to claim 29, wherein the transparent conductive film is electrically separated from the pixel electrode. 32. The display device according to claim 29, wherein an end surface of the transparent conductive film lies substantially in register with an end surface of the source electrode. 33. The display device according to claim 29, wherein the transparent conductive film is in contact with an end surface of the semiconductor film and an end surface of the source electrode. 34. The display device according to claim 25, wherein the terminal portion is electrically connected to a flexible printed circuit. 35. The display device according to claim 25, wherein the gate wiring is electrically connected to the terminal portion. 36. The display device according to claim 25, wherein the passivation film comprises at least one of a silicon oxide film, a silicon nitride film, a silicon oxynitride film, and a tantalum oxide film. 37. A display device comprising: a thin film transistor, the thin film transistor comprising: a gate electrode formed over a substrate;an insulating film formed over the gate electrode;a first semiconductor film formed over the insulating film;a source electrode formed over the first semiconductor film; anda drain electrode formed over the first semiconductor film;a pixel electrode comprising a transparent conductive material, formed over the substrate, and connected to the drain electrode;a source wiring being continuous to the source electrode, formed over the insulating film and a second semiconductor film;wherein the second semiconductor film is continuous to the first semiconductor film, and comprises the same material as the first semiconductor film,a gate wiring being continuous to the gate electrode, formed over the substrate;a passivation film formed over the source electrode and the drain electrode, the passivation film being in contact with a portion of the first semiconductor film between the source electrode and the drain electrode;an alignment film formed over the passivation film; anda capacitor, the capacitor comprising; a capacitor wiring formed over the substrate, wherein the capacitor wiring comprises a same material as the gate electrode;the insulating film formed over the capacitor wiring; andthe pixel electrode formed over the capacitor wiring with the insulating film interposed therebetween,wherein the capacitor wiring extends substantially in parallel with the gate wiring at least in a pixel portion,wherein the capacitor wiring is electrically connected to a terminal portion, andwherein the terminal portion is formed in an edge portion of the substrate. 38. The display device according to claim 37, wherein the pixel electrode is located below the passivation film. 39. The display device according to claim 37, wherein an end surface of the pixel electrode lies substantially in register with an end surface of the drain electrode. 40. The display device according to claim 37, wherein the pixel electrode is in contact with an end surface of the first semiconductor film and an end surface of the drain electrode. 41. The display device according to claim 37, further comprising a transparent conductive film formed over and along with the source wiring, comprising the same material as the pixel electrode. 42. The display device according to claim 41, wherein the transparent conductive film extends beyond both side edges of the source wiring. 43. The display device according to claim 41, wherein the transparent conductive film is electrically separated from the pixel electrode. 44. The display device according to claim 41, wherein an end surface of the transparent conductive film lies substantially in register with an end surface of the source electrode. 45. The display device according to claim 41, wherein the transparent conductive film is in contact with an end surface of the first semiconductor film and an end surface of the source electrode. 46. The display device according to claim 37, wherein the terminal portion is electrically connected to a flexible printed circuit. 47. The display device according to claim 37, wherein the gate wiring is electrically connected to the terminal portion. 48. The display device according to claim 37, wherein the passivation film comprises at least one of a silicon oxide film, a silicon nitride film, a silicon oxynitride film, and a tantalum oxide film.
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