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Title:
POLARIZING FILM WITH CONDUCTIVE LAYER AND PRODUCTION METHOD FOR POLARIZING FILM WITH CONDUCTIVE LAYER
Document Type and Number:
WIPO Patent Application WO/2020/179509
Kind Code:
A1
Abstract:
Provided is a polarizing film with a conductive layer. The polarizing film maintains stable conductivity so as to not, for example, cause malfunction of a touch sensor, even after exposure to wet heat. The polarizing film with a conductive layer comprises: a polarizing film; an adhesive layer that is provided on a first surface side and/or a second surface side of the polarizing film; and a conductive layer. The wet heat conductivity change ratio FHT of the polarizing film as given by expression (1) is no more than 2.　(1) FHT=ΔC(B)/ΔC(A). (In expression (1), ΔC(B) is the difference between a touch panel base current value and the value of the current that flows in an evaluation touch panel when the polarizing film with a conductive layer has been stuck to the touch panel after a wet heat test, and ΔC(A) is the difference between a touch panel base current value and the value of the current that flows in an evaluation touch panel when the polarizing film with a conductive layer has been stuck to the touch panel before a wet heat test.)

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Inventors:
YAMAMOTO SATOSHI (JP)
KIMURA TOMOYUKI (JP)
TOYAMA YUSUKE (JP)
Application Number:
PCT/JP2020/007126
Publication Date:
September 10, 2020
Filing Date:
February 21, 2020
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J133/00; B32B7/023; B32B7/025; C09J7/29; C09J7/38; G02B5/30
Domestic Patent References:
WO2018181416A12018-10-04
WO2016158578A12016-10-06
WO2011099474A12011-08-18
Foreign References:
JP2016122054A2016-07-07
JP2008292982A2008-12-04
JP2016203414A2016-12-08
JP2018141989A2018-09-13
JP2016039132A2016-03-22
JP2015225760A2015-12-14
JP2015028138A2015-02-12
JP2015117367A2015-06-25
Attorney, Agent or Firm:
OI, Michiko (JP)
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