Invention Grant
- Patent Title: Double-sided adhesive layer-equipped optical laminate
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Application No.: US17276962Application Date: 2019-09-26
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Publication No.: US11891549B2Publication Date: 2024-02-06
- Inventor: Daisuke Hattori , Atsushi Kishi , Ryota Morishima
- Applicant: NITTO DENKO CORPORATION
- Applicant Address: JP Ibaraki
- Assignee: NITTO DENKO CORPORATION
- Current Assignee: NITTO DENKO CORPORATION
- Current Assignee Address: JP Ibaraki
- Agency: WHDA, LLP
- Priority: JP 18184834 2018.09.28
- International Application: PCT/JP2019/037976 2019.09.26
- International Announcement: WO2020/067344A 2020.04.02
- Date entered country: 2021-03-17
- Main IPC: C09J7/29
- IPC: C09J7/29 ; C09J7/38 ; G02B1/11 ; G02B1/14

Abstract:
There is provided an optical laminate with pressure-sensitive adhesive layers on both surfaces, which is suppressed damage from occurring to a low-refractive index layer in vacuum lamination while maintaining excellent characteristics of the low-refractive index layer. An optical laminate with pressure-sensitive adhesive layers on both surfaces according to an embodiment of the present invention comprises: a substrate; a low-retractive index layer formed on the substrate; a first pressure-sensitive adhesive layer arranged so as to be adjacent to the low-refractive index layer; and a second pressure-sensitive adhesive layer serving as one outermost layer. The low-refractive index layer has a porosity of 50% or more, the first pressure-sensitive adhesive layer has a storage modulus of elasticity of from 1.3×105 (Pa) to 1.0×107 (Pa), and the second pressure-sensitive adhesive layer has a storage modulus of elasticity of 1.0×105 (Pa) or less.
Public/Granted literature
- US20220033687A1 DOUBLE-SIDED ADHESIVE LAYER-EQUIPPED OPTICAL LAMINATE Public/Granted day:2022-02-03
Information query
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