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Title:
OPTICAL LAMINATED BODY, AND POLARIZING PLATE, SURFACE PLATE, AND IMAGE DISPLAY DEVICE THAT ARE PROVIDED WITH SAID OPTICAL LAMINATED BODY
Document Type and Number:
WIPO Patent Application WO/2021/200884
Kind Code:
A1
Abstract:
Provided is an optical laminated body that has excellent adhesiveness between a polyester film having a high plane orientation degree ΔP and an easily adhesive layer and that achieves inhibition of local defects, without using an easily adhesive layer made of a specific material. This optical laminated body has, on a polyester film, an easily adhesive layer, a projection/recess layer, and an antifouling layer. When nx represents the refractive index of the polyester film in a slow axial direction in a plane thereof, ny represents the refractive index in a direction orthogonal to the slow axis in the plane, and nz represents the refractive index in a thickness direction of the polyester film, the polyester film satisfies formula 1-2. When Ssk represents a three-dimensional skewness of the surface of the projection/recess layer and Sa represents a three-dimensional arithmetic average roughness of the surface of the projection/recess layer, Ssk and Sa of the projection/recess layer satisfy formula 2-1. (1-2): 0.140≤ΔP. (2-1): 0.80≤A≤1.90 [In formula 1-2, "ΔP" represents "((nx+ny)/2)-nz".] [In formula 2-1, "A" represents "log10(Sa [μm]×100/Ssk)", where 0

Inventors:
KUBOTA SHOSEI (JP)
TANAKA YOSHIKO (JP)
KURODA TAKASHI (JP)
USHIYAMA AKINOBU (JP)
Application Number:
PCT/JP2021/013435
Publication Date:
October 07, 2021
Filing Date:
March 30, 2021
Export Citation:
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Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
G02B5/30; B32B7/023; G02B1/18; H01L27/32; H01L51/50; H05B33/02
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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