Thin film integrated circuit device

• US 7,333,072 B2
• Filed: 03/16/2004
• Issued: 02/19/2008
• Est. Priority Date: 03/24/2003
• Status: Expired due to Fees

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Watanabe, Yasuko, Yamazaki, Shunpei, Tachimura, Yuko
• Primary Examiner(s): Hjerpe; Richard
• Assistant Examiner(s): Shapiro; Leonid
• Application Number:
  US10/801,135
• Publication Number:
  US 20040245525A1
• Time in Patent Office: 1,435 Days
• Field of Search: 345/5, 345/4, 345/1.1, 345/2.2
• US Class Current: 345/5
• CPC Class Codes: G06K 19/07703 the interface being visual
• CPC Class Codes: G07F 7/086 by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer for security documents G07D7/00; for the reading of record-carriers in general G06K7/00; for the design of coded credit-cards G06K19/10
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
• CPC Class Codes: G07F 7/1025 Identification of user by a PIN code
• CPC Class Codes: H10K 2102/3031 Two-side emission, e.g. transparent OLEDs [TOLED]
• CPC Class Codes: H10K 50/828 Transparent cathodes, e.g. comprising thin metal layers
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/80524 Transparent cathodes, e.g. comprising thin metal layers

Abstract

A device having an integrated circuit, especially an IC card, for reliably verifying a person'"'"'s identity by display of PIN numbers or passwords with ingenuity. Portable electronic devices such as a PDA or a cellular phone, or other products can have plural displays in a display area (display part) provided in a limited area. A first display area and a second display area having transparency are stacked together in a thin film integrated circuit device of the present invention. The area of display can be reduced and display of more complicated PIN numbers or passwords is enabled by layering the display of the first display area and the display of the second display area.

Claims

1. A thin film integrated circuit device comprising:

a first display area;

a thin film integrated circuit including a plurality of semiconductor films as a plurality of active region formed over an insulating film; and

a second display area that is formed over the first display area and connected to the thin film integrated circuit,

wherein the second display area is a dual emission light-emitting device.

2. A thin film integrated circuit device according to claim 1, wherein the first display area is a photograph.

3. A thin film integrated circuit device according to claim 1, wherein the first display area and the second display area are similar in size.

4. A thin film integrated circuit device according to claim 1, wherein the first display area and the second display area are combined whereby displaying letters, graphics, symbols or the combination thereof.

5. A thin film integrated circuit device according to claim 1, wherein the first display area displays a static image.

6. A thin film integrated circuit device according to claim 1, wherein the second display area displays a moving image.

7. A thin film integrated circuit device according to claim 1, wherein the thin film integrated circuit device is an IC card.

8. A thin film integrated circuit device comprising:

a first display area;

a thin film integrated circuit including a plurality of semiconductor films as a plurality of active region formed over an insulating film; and

a second display area that is formed over the first display area and connected to the thin film integrated circuit,

wherein the second display area is a dual emission light-emitting device, and

wherein display of the first display area is visible when the second display area is OFF.

9. A thin film integrated circuit device according to claim 8, wherein the first display area is a photograph.

10. A thin film integrated circuit device according to claim 8, wherein the first display area and the second display area are similar in size.

11. A thin film integrated circuit device according to claim 8, wherein the first display area and the second display area are combined whereby displaying letters, graphics, symbols or the combination thereof.

12. A thin film integrated circuit device according to claim 8, wherein the first display area displays a static image.

13. A thin film integrated circuit device according to claim 8, wherein the second display area displays a moving image.

14. A thin film integrated circuit device according to claim 8, wherein the thin film integrated circuit device is an IC card.

15. A thin film integrated circuit device comprising:

a first display area;

a thin film integrated circuit including a plurality of the semiconductor films as a plurality of active region formed over one surface of an insulating film;

a metal oxide provided over another one surface of the insulating film; and

a second display area that is formed over the first display area and connected to the thin film integrated circuit,

wherein the second display area is a dual emission light-emitting device.

16. A thin film integrated circuit device according to claim 15, wherein the first display area is a photograph.

17. A thin film integrated circuit device according to claim 15, wherein the metal film is formed from an element selected from the group consisting of W, Ta, Mo, Nd, Ni, Co, Zr, Zn, Ru, Rh, Pd, Os, and Ir, or an alloy material or a compound material which is based on the element;

or an oxide of the metal compound.

18. A thin film integrated circuit device according to claim 15, wherein the metal oxide is WO₂ or WO₃.

19. A thin film integrated circuit device according to claim 15, wherein the first display area and the second display area are similar in size.

20. A thin film integrated circuit device according to claim 15, wherein the first display area and the second display area are combined whereby displaying letters, graphics, symbols or the combination thereof.

21. A thin film integrated circuit device according to claim 15, wherein the first display area displays a static image.

22. A thin film integrated circuit device according to claim 15, wherein the second display area displays a moving image.

23. A thin film integrated circuit device according to claim 15, wherein the thin film integrated circuit device is an IC card.

24. A thin film integrated circuit device comprising:

a first display area;

a thin film integrated circuit including a plurality of semiconductor films as a plurality of active region formed over one surface of an insulating film;

a metal oxide provided over another surface of the insulating film; and

a second display area that is formed over the first display area and connected to the thin film integrated circuit,

wherein the second display area is a dual emission light-emitting device, and

wherein display of the first display area is visible when the second display area is OFF.

25. A thin film integrated circuit device according to claim 24, wherein the first display area is a photograph.

26. A thin film integrated circuit device according to claim 24, wherein the metal film is formed from an element selected from the group consisting of W, Ti, Ta, Mo, Nd, Ni, Co, Zr, Zn, Ru, Rh, Pd, Os, and Ir, or an alloy material or a compound material which is based on the element;

or an oxide of the metal compound.

27. A thin film integrated circuit device according to claim 24, wherein the metal oxide is WO₂ or WO₃.

28. A thin film integrated circuit device according to claim 24, wherein the first display area and the second display area are similar in size.

29. A thin film integrated circuit device according to claim 24, wherein the first display area and the second display area are combined whereby displaying letters, graphics, symbols or the combination thereof.

30. A thin film integrated circuit device according to claim 24, wherein the first display area displays a static image.

31. A thin film integrated circuit device according to claim 24, wherein the second display area displays a moving image.

32. A thin film integrated circuit device according to claim 24, wherein the thin film integrated circuit device is an IC card.

33. A thin film integrated circuit device comprising:

a first display area;

a thin film integrated circuit having a plurality of thin film transistors formed over one surface of an insulating film;

a metal oxide provided over another one surface of the insulating film; and

a second display area that is formed over the first display area and connected to the thin film integrated circuit,

wherein the second display area is a dual emission light-emitting device.

34. A thin film integrated circuit device according to claim 33, wherein the first display area is a photograph.

35. A thin film integrated circuit device according to claim 33, wherein the metal film is formed from an element selected from the group consisting of W, Ti, Ta, Mo, Nd, Ni, Co, Zr, Zn, Ru, Rh, Pd, Os, and Ir, or an alloy material or a compound material which is based on the element;

or an oxide of the metal compound.

36. A thin film integrated circuit device according to claim 33, wherein the metal oxide is WO₂ or WO₃.

37. A thin film integrated circuit device according to claim 33, wherein the first display area and the second display area are similar in size.

38. A thin film integrated circuit device according to claim 33, wherein the first display area and the second display area are combined whereby displaying letters, graphics, symbols or the combination thereof.

39. A thin film integrated circuit device according to claim 33, wherein the first display area displays a static image.

40. A thin film integrated circuit device according to claim 33, wherein the second display area displays a moving image.

41. A thin film integrated circuit device according to claim 33, wherein the thin film integrated circuit device is an IC card.

42. A thin film integrated circuit device comprising:

a first display area;

a thin film integrated circuit having a plurality of thin film transistors formed over one surface of an insulating film;

a metal oxide provided over another one surface of the insulating film; and

a second display area that is formed over the first display area and connected to the thin film integrated circuit,

wherein the second display area is a dual emission light-emitting device, and

wherein display of the first display area is visible when the second display area is OFF.

43. A thin film integrated circuit device according to claim 42, wherein the first display area is a photograph.

44. A thin film integrated circuit device according to claim 42, wherein the metal film is formed from an element selected from the group consisting of W, Ti, Ta, Mo, Nd, Ni, Co, Zr, Zn, Ru, Rh, Pd, Os, and Ir, or an alloy material or a compound material which is based on the element;

or an oxide of the metal compound.

45. A thin film integrated circuit device according to claim 42, wherein the metal oxide is WO₂ or WO₃.

46. A thin film integrated circuit device according to claim 42, wherein the first display area and the second display area are similar in size.

47. A thin film integrated circuit device according to claim 42, wherein the first display area and the second display area are combined whereby displaying letters, graphics, symbols or the combination thereof.

48. A thin film integrated circuit device according to claim 42, wherein the first display area displays a static image.

49. A thin film integrated circuit device according to claim 42, wherein the second display area displays a moving image.

50. A thin film integrated circuit device according to claim 42, wherein the thin film integrated circuit device is an IC card.