SEMICONDUCTOR DEVICE AND DRIVING METHOD OF THE SAME

• US 20110227137A1
• Filed: 06/02/2011
• Published: 09/22/2011
• Est. Priority Date: 10/18/2004
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: YAMAZAKI, Shunpei, ABE, Hiroko, NOMURA, Ryoji, IWAKI, Yuji
• Granted Patent: US 8,223,531 B2
• Time in Patent Office: Days
• US Class Current: 257/290
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: G11C 13/0014 comprising cells based on organic memory material
• CPC Class Codes: G11C 13/0059 Security or protection circuits or methods
• CPC Class Codes: G11C 13/04 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
• CPC Class Codes: G11C 16/22 Safety or protection circuits preventing unauthorised or accidental access to memory cells
• CPC Class Codes: G11C 17/16 using electrically-fusible links
• CPC Class Codes: G11C 2213/77 Array wherein the memory element being directly connected to the bit lines and word lines without any access device being used
• CPC Class Codes: G11C 2213/79 Array wherein the access device being a transistor
• CPC Class Codes: H10K 19/202 Integrated devices comprising a common active layer
• CPC Class Codes: H10K 85/611 Charge transfer complexes
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine

Abstract

The present invention provides a semiconductor device including a memory that has a memory cell array including a plurality of memory cells, a control circuit that controls the memory, and an antenna, where the memory cell array has a plurality of bit lines extending in a first direction and a plurality of word lines extending in a second direction different from the first direction, and each of the plurality of memory cells has an organic compound layer provided between the bit line and the word line. Data is written by applying optical or electric action to the organic compound layer.

Claims

1. A semiconductor device comprising:

a first conductive layer on a substrate;

a first organic compound layer over the first conductive layer;

a second organic compound layer over the first conductive layer;

a first insulating layer on the first conductive layer, the first insulating layer interposed between the first organic compound layer and the second organic compound layer;

a second conductive layer on the first organic compound layer;

a third conductive layer on the second organic compound layer; and

a second insulating layer on the second conductive layer, the third conductive layer, and the first insulating layer.

2. The semiconductor device according to claim 1,

wherein the second conductive layer is provided over the first conductive layer with the first organic compound layer interposed therebetween, and

wherein the third conductive layer is provided over the first conductive layer with the second organic compound layer interposed therebetween.

3. The semiconductor device according to claim 1, further comprising:

a first semiconductor layer interposed between the first conductive layer and the first organic compound layer; and

a second semiconductor layer interposed between the first conductive layer and the second organic compound layer,

wherein the first insulating layer is interposed between the first semiconductor layer and the second semiconductor layer.

4. The semiconductor device according to claim 1,

wherein a distance between the first conductive layer and the second conductive layer is arranged to change when a voltage is applied between the first conductive layer and the second conductive layer, and

wherein a distance between the first conductive layer and the third conductive layer is arranged to change when a voltage is applied between the first conductive layer and the third conductive layer.

5. The semiconductor device according to claim 4,

wherein the voltage is in the range between 5 and 15V.

6. The semiconductor device according to claim 1, further comprising a fourth conductive layer electrically connected to the second conductive layer.

7. The semiconductor device according to claim 1,

wherein the first organic compound layer and the second organic compound layer are provided on the same surface of the first conductive layer.

8. The semiconductor device according to claim 1,

wherein at least one of the first conductive layer and the second conductive layer has a light-transmitting property.

9. The semiconductor device according to claim 1,

wherein the first organic compound layer and the second organic compound layer include a same organic material.

10. The semiconductor device according to claim 1,

wherein the first organic compound layer has a first resistance which is irreversibly changed when a voltage is applied between the first conductive layer and the second conductive layer, and

wherein the second organic compound layer has a second resistance which is irreversibly changed when a voltage is applied between the first conductive layer and the third conductive layer.

11. The semiconductor device according to claim 1,

wherein the first organic compound layer and the second organic compound layer comprise one of an electron transporting material and a hole transporting material.

12. The semiconductor device according to claim 1,

wherein the first organic compound layer and the second organic compound layer have an electric conductivity that is 10⁻

15 S/cm or more and 10<sup>−

3</sup> S/cm or less.

13. The semiconductor device according to claim 1,

wherein the first organic compound layer and the second organic compound layer have a film thickness of 5 to 60 nm.

14. The semiconductor device according to claim 1,

wherein the first organic compound layer and the second organic compound layer comprise a material having an electric resistance which is changed by light irradiation.

15. The semiconductor device according to claim 1,

wherein the first organic compound layer and the second organic compound layer comprise a material having an electric conductivity which is changed by laser light irradiation.

16. The semiconductor device according to claim 1, further comprising at least one of a power supply circuit, a clock generation circuit, a data demodulation/modulation circuit, and an interface circuit.

17. The semiconductor device according to claim 1,

wherein the substrate is a glass substrate.

18. The semiconductor device according to claim 1,

wherein the substrate is a flexible substrate.

19. The semiconductor device according to claim 1,

wherein at least one of the first conductive layer and the second conductive layer comprises titanium.

20. A semiconductor device comprising:

a transistor on a substrate;

a first conductive layer over the transistor;

a first organic compound layer over the first conductive layer;

a second organic compound layer over the first conductive layer;

a first insulating layer on the first conductive layer, the first insulating layer interposed between the first organic compound layer and the second organic compound layer;

a second conductive layer on the first organic compound layer;

a third conductive layer on the second organic compound layer; and

a second insulating layer on the second conductive layer, the third conductive layer, and the first insulating layer.

21. The semiconductor device according to claim 20,

wherein the transistor is a thin film transistor.

22. The semiconductor device according to claim 20,

wherein the second conductive layer is provided over the first conductive layer with the first organic compound layer interposed therebetween, and

wherein the third conductive layer is provided over the first conductive layer with the second organic compound layer interposed therebetween.

23. The semiconductor device according to claim 20, further comprising:

a first semiconductor layer interposed between the first conductive layer and the first organic compound layer; and

a second semiconductor layer interposed between the first conductive layer and the second organic compound layer,

wherein the first insulating layer is interposed between the first semiconductor layer and the second semiconductor layer.

24. The semiconductor device according to claim 20,

wherein a distance between the first conductive layer and the second conductive layer is arranged to change when a voltage is applied between the first conductive layer and the second conductive layer, and

wherein a distance between the first conductive layer and the third conductive layer is arranged to change when a voltage is applied between the first conductive layer and the third conductive layer.

25. The semiconductor device according to claim 24,

wherein the voltage is in the range between 5 and 15V.

26. The semiconductor device according to claim 20, further comprising a fourth conductive layer electrically connected to the second conductive layer.

27. The semiconductor device according to claim 20,

wherein the first organic compound layer and the second organic compound layer are provided on the same surface of the first conductive layer.

28. The semiconductor device according to claim 20,

wherein at least one of the first conductive layer and the second conductive layer has a light-transmitting property.

29. The semiconductor device according to claim 20,

wherein the first organic compound layer and the second organic compound layer include a same organic material.

30. The semiconductor device according to claim 20,

wherein the first organic compound layer has a first resistance which is irreversibly changed when a voltage is applied between the first conductive layer and the second conductive layer, and

wherein the second organic compound layer has a second resistance which is irreversibly changed when a voltage is applied between the first conductive layer and the third conductive layer.

31. The semiconductor device according to claim 20,

wherein the first organic compound layer and the second organic compound layer comprise one of an electron transporting material and a hole transporting material.

32. The semiconductor device according to claim 20,

wherein the first organic compound layer and the second organic compound layer have an electric conductivity that is 10⁻

15 S/cm or more and 10<sup>−

3</sup> S/cm or less.

33. The semiconductor device according to claim 20,

wherein the first organic compound layer and the second organic compound layer have a film thickness of 5 to 60 nm.

34. The semiconductor device according to claim 20,

wherein the first organic compound layer and the second organic compound layer comprise a material having an electric resistance which is changed by light irradiation.

35. The semiconductor device according to claim 20,

wherein the first organic compound layer and the second organic compound layer comprise a material having an electric conductivity which is changed by laser light irradiation.

36. The semiconductor device according to claim 20, further comprising at least one of a power supply circuit, a clock generation circuit, a data demodulation/modulation circuit, and an interface circuit.

37. The semiconductor device according to claim 20,

wherein the substrate is a glass substrate.

38. The semiconductor device according to claim 20,

wherein the substrate is a flexible substrate.

39. The semiconductor device according to claim 20,

wherein at least one of the first conductive layer and the second conductive layer comprises titanium.