Title:
偏光板
Document Type and Number:
Japanese Patent JP6917684
Kind Code:
B2
Abstract:
The invention is to provide a polarizing plate in which cracking (breaking) of a polarizing film hardly occurs due to thermal shock. The polarizing plate of the present invention comprises in this order a first thermoplastic resin film, a first adhesive layer, a polarizing film, a second adhesive layer and a second thermoplastic resin film, wherein, the rigidity R1t of the first thermoplastic resin film and the rigidity R2t of the second thermoplastic resin film are less than 0.6 MPa,mm3, the storage modulus of the first adhesive layer and the second adhesive layer at 80 DEG C are more than 400 MPa. The rigidity R1t is (tensile modulus of the first thermoplastic resin film at 80 DEG C [MPa])*(thickness of the first thermoplastic resin film [mm])3, the rigidity R2t is (tensile modulus of the second thermoplastic resin film at 80 DEG C [MPa])*(thickness of the second thermoplastic resin film [mm])3.
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Inventors:
Etsuo Kume
Application Number:
JP2016148797A
Publication Date:
August 11, 2021
Filing Date:
July 28, 2016
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
G02B5/30
Domestic Patent References:
| JP201117820A | ||||
| JP2015165017A | ||||
| JP2013200470A | ||||
| JP2013200447A | ||||
| JP201660910A | ||||
| JP2012215864A |
Foreign References:
| WO2011065124A1 | ||||
| US20140071379 |
Attorney, Agent or Firm:
Fukami patent office