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Patent Searching and Data


Title:
SAPPHIRE COMPOSITE BASE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2017/104799
Kind Code:
A1
Abstract:
Provided are: a sapphire composite base which does not easily scatter when broken and has a surface that is not susceptible to scratches; and a method for producing this sapphire composite base. Specifically provided is a sapphire composite base which comprises an inorganic glass substrate, an intermediate film that is disposed on the inorganic glass substrate and is formed of a polyvinyl butyral or silica, and a single crystal sapphire film that is disposed on the intermediate film. Also provided is a method for producing a sapphire composite base, which comprises at least: a step for forming an ion implantation layer within a single crystal sapphire substrate; a step for forming an intermediate film of a polyvinyl butyral or silica on at least one surface that is selected from the group consisting of the surface of the single crystal sapphire substrate before ion implantation, the surface of the single crystal sapphire substrate after ion implantation, and the surface of the inorganic glass substrate; a step for obtaining a bonded body by bonding the ion-implanted surface of the single crystal sapphire substrate and the surface of the inorganic glass substrate with each other, with the intermediate film being interposed therebetween; and a step for transferring a single crystal sapphire film onto the inorganic glass substrate, with the intermediate film being interposed therebetween.

Inventors:
NAGATA KAZUTOSHI (JP)
KUBOTA YOSHIHIRO (JP)
Application Number:
JP2016/087542
Publication Date:
June 22, 2017
Filing Date:
December 16, 2016
Export Citation:
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Assignee:
SHIN-ETSU CHEMICAL CO LTD (JP)
International Classes:
C03C17/34; B32B17/10; C03C27/00; C30B29/20; C30B33/06
Domestic Patent References:
WO2014078524A12014-05-22
WO2014142036A12014-09-18
Foreign References:
JP2011243968A2011-12-01
JP2008543706A2008-12-04
JP2015514604A2015-05-21
JPH08269690A1996-10-15
JP2703471B21998-01-26
Other References:
See also references of EP 3392221A4
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
Okuyama In addition, it is 1. (JP)
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