Title:
ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2021/157534
Kind Code:
A1
Abstract:
Provided is an adhesive sheet which exhibits good adhesive properties and in which light transmittance is restricted and the refractive index for infrared rays and visible light is improved, said refractive index having little wavelength dependence. An adhesive sheet provided according to the present invention comprises an adhesive layer. The adhesive sheet has a total light transmittance of less than 80%. The adhesive layer has a first surface, and a second surface on the reverse side from the first surface. The adhesive layer contains high refractive index particles, said high refractive index particles being localized in the first surface side of the adhesive layer. The difference between the refractive index nVIS at a 500-nm wavelength and the refractive index nIR at a 940-nm wavelength at the first surface is less than 0.03.
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Inventors:
NISHIWAKI MASATAKA (JP)
MINOURA KAZUKI (JP)
BUZOJIMA YASUSHI (JP)
MINOURA KAZUKI (JP)
BUZOJIMA YASUSHI (JP)
Application Number:
PCT/JP2021/003563
Publication Date:
August 12, 2021
Filing Date:
February 01, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J11/04; C09J7/38; C09J11/06; C09J133/00; C09J201/00
Domestic Patent References:
| WO2014208429A1 | 2014-12-31 |
Foreign References:
| JP2005263994A | 2005-09-29 | |||
| JP2009132803A | 2009-06-18 | |||
| JP2011084733A | 2011-04-28 | |||
| JP2017026826A | 2017-02-02 |
Attorney, Agent or Firm:
OI, Michiko (JP)
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