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Title:
PROTECTIVE-MEMBRANE-FORMING FILM, SHEET FOR FORMING PROTECTIVE MEMBRANE, COMPOUND SHEET FOR FORMING PROTECTIVE MEMBRANE, AND INSPECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/111632
Kind Code:
A1
Abstract:
Provided is a sheet (2) for forming a protective membrane, said sheet comprising: a protective-membrane-forming film (1) characterized in that the light transmittance thereof at a wavelength of 1600nm of 72% or more, and the light transmittance thereof at a wavelength of 550nm of 20% or less; and a peeling sheet (21) laminated upon one or both faces of the protective-membrane-forming film (1). According to this sheet (2) for forming a protective membrane, it is possible to form a protective membrane that allows for the inspection of cracks, etc., on a workpiece or a product obtained by processing the workpiece, while preventing grinding marks on the workpiece or the product from being visible to the naked eye.

Inventors:
YAMAMOTO DAISUKE (JP)
YONEYAMA HIROYUKI (JP)
Application Number:
PCT/JP2015/051567
Publication Date:
July 30, 2015
Filing Date:
January 21, 2015
Export Citation:
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Assignee:
LINTEC CORP (JP)
International Classes:
H01L23/00; C09J7/10; C09J11/04; C09J201/00; H01L21/301
Foreign References:
JP2012033741A2012-02-16
JP2012156217A2012-08-16
JP2004142430A2004-05-20
JP2013135041A2013-07-08
Attorney, Agent or Firm:
SHIGA, Masatake et al. (JP)
Masatake Shiga (JP)
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