Method of peeling off and method of manufacturing semiconductor device
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-021/30
H01L-021/02
출원번호
US-0199084
(2005-08-09)
등록번호
US-7361573
(2008-04-22)
우선권정보
JP-2001-244885(2001-08-10)
발명자
/ 주소
Takayama,Toru
Maruyama,Junya
Yamazaki,Shunpei
출원인 / 주소
Semiconductor Energy Laboratory Co., Ltd.
대리인 / 주소
Robinson,Eric J.
인용정보
피인용 횟수 :
29인용 특허 :
74
초록▼
The invention aims to provide a peeling method without damaging a peeled off layer and to allow separation of not only a peeled off layer having a small surface area but also the entire surface of a peeled off layer having a large surface area. Further, the invention aims to provide a lightweight se
The invention aims to provide a peeling method without damaging a peeled off layer and to allow separation of not only a peeled off layer having a small surface area but also the entire surface of a peeled off layer having a large surface area. Further, the invention aims to provide a lightweight semiconductor device by sticking a peeled off layer to a variety of substrates and its manufacturing method. Especially, the invention aims to provide a lightweight semiconductor device by sticking a variety of elements such as TFT to a flexible film and its manufacturing method. Even in the case a first material layer 11 is formed on a substrate and a second material layer 12 is formed adjacently to the foregoing first material layer 11, and further, layered film formation, heating treatment at 500�� C. or higher or laser beam radiating treatment is carried out, if the first material layer has a tensile stress before the peeling and the second material layer has a compressive stress, excellent separation can easily be carried out by physical means in the interlayer or interface of the second material layer 12.
대표청구항▼
What is claimed is: 1. A method for peeling comprising the steps of: forming a multilayer composed of a first material layer over a substrate and a second material layer over the first material layer over the substrate; heating at 500�� C. or higher the multilayer so that the second material layer
What is claimed is: 1. A method for peeling comprising the steps of: forming a multilayer composed of a first material layer over a substrate and a second material layer over the first material layer over the substrate; heating at 500�� C. or higher the multilayer so that the second material layer has a compressive stress; and peeling the second material layer from the first material layer and the substrate after the heating step, wherein the second material layer has the compressive stress in a range of-1 to-1��1010 Dyne/cm2 before the peeling step. 2. The method for peeling according to claim 1, wherein the first material layer comprises metal material. 3. The method for peeling according to claim 1, wherein the first material layer comprises tungsten. 4. The method for peeling according to claim 1, wherein the second material layer comprises silicon. 5. The method for peeling according to claim 1, wherein the peeling step is carried out by physical means. 6. A method for peeling comprising the steps of: forming a multilayer composed of a first material layer over a substrate and a second material layer over the first material layer over the substrate; radiating a laser beam to the multilayer so that the second material layer has a compressive stress; and peeling the second material layer from the first material layer and the substrate after the radiating step, wherein the second material layer has the compressive stress in a range of-1 to-1��1010 Dyne/cm2 before the peeling step. 7. The method for peeling according to claim 6, wherein the first material layer comprises metal material. 8. The method for peeling according to claim 6, wherein the first material layer comprises tungsten. 9. The method for peeling according to claim 6, wherein the second material layer comprises silicon. 10. The method for peeling according to claim 6, wherein the peeling step is carried out by physical means. 11. A method for peeling comprising the steps of: forming a multilayer composed of a first material layer over a substrate and a second material layer over the first material layer over the substrate; forming an underlying insulating layer on the multilayer; forming a semiconductor layer having an amorphous structure on the underlying insulating layer; heating the multilayer, the underlying insulating layer and the semiconductor layer so that the second material layer has a compressive stress; and peeling the second material layer, the underlying insulating layer and the semiconductor layer from the first material layer and the substrate after the heating step, wherein the second material layer has the compressive stress in a range of-1 to-1��1010 Dyne/cm2 before the peeling step. 12. The method for peeling according to claim 11, wherein the first material layer comprises metal material. 13. The method for peeling according to claim 11, wherein the first material layer comprises tungsten. 14. The method for peeling according to claim 11, wherein the second material layer comprises silicon. 15. The method for peeling according to claim 11, wherein the underlying insulating layer comprises two silicon nitride oxide films. 16. The method for peeling according to claim 11, wherein the peeling step is carried out by physical means. 17. A method for peeling comprising the steps of: forming a multilayer composed of a first material layer over a substrate and a second material layer over the first material layer over the substrate; forming an underlying insulating layer on the multilayer; forming a semiconductor layer having an amorphous structure on the underlying insulating layer; radiating a laser light to the multilayer, the underlying insulating layer and the semiconductor layer so that the second material layer has a compressive stress; and peeling the second material layer, the underlying insulating layer and the semiconductor layer from the first material layer and the substrate after the radiating step, wherein the second material layer has the compressive stress in a range of-1 to-1��1010 Dyne/cm2 before the peeling step. 18. The method for peeling according to claim 17, wherein the first material layer comprises metal material. 19. The method for peeling according to claim 17, wherein the first material layer comprises tungsten. 20. The method for peeling according to claim 17, wherein the second material layer comprises silicon. 21. The method for peeling according to claim 17, wherein the underlying insulating layer comprises two silicon nitride oxide films. 22. The method for peeling according to claim 17, wherein the peeling step is carried out by physical means. 23. A method for peeling comprising the steps of: forming a multilayer composed of a first material layer over a substrate and a second material layer over the first material layer over the substrate; heating the multilayer so that the second material layer has a compressive stress; sticking a supporting body to the multilayer; and peeling the second material layer and the supporting body from the first material layer and the substrate after the heating step, wherein the second material layer has the compressive stress in a range of-1 to-1��1010 Dyne/cm2 before the peeling step. 24. The method for peeling according to claim 23, wherein the first material layer comprises metal material. 25. The method for peeling according to claim 23, wherein the first material layer comprises tungsten. 26. The method for peeling according to claim 23, wherein the second material layer comprises silicon. 27. The method for peeling according to claim 23, wherein the peeling step is carried out by physical means. 28. The method for peeling according to claim 23, wherein the supporting body is a film-like plastic substrate. 29. A method for peeling comprising the steps of: forming a multilayer composed of a first material layer over a substrate and a second material layer over the first material layer over the substrate; radiating a laser light to the multilayer so that the second material layer has a compressive stress; sticking a supporting body to the multilayer; and peeling the second material layer and the supporting body from the first material layer and the substrate after the radiating step, wherein the second material layer has the compressive stress in a range of-1 to-1��1010 Dyne/cm2 before the peeling step. 30. The method for peeling according to claim 29, wherein the first material layer comprises metal material. 31. The method for peeling according to claim 29, wherein the first material layer comprises tungsten. 32. The method for peeling according to claim 29, wherein the second material layer comprises silicon. 33. The method for peeling according to claim 29, wherein the peeling step is carried out by physical means. 34. The method for peeling according to claim 29, wherein the supporting body is a film-like plastic substrate.
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