Optical multilayer film and image display device

Details Optical multilayer film and image display device Optical multilayer film and image display device

2011-08-16

2011-08-16

Chang, Audrey Y (Department: 2872)

Optical: systems and elements

Light interference

Produced by coating or lamina

C359S582000, C359S588000

Reexamination Certificate

active

08000012

ABSTRACT:
A first adhesion layer and a second adhesion layer are formed on a base material formed of polyester biaxially stretched in this order from the side of the base material. Additionally, a hard coat layer and an antireflection layer are formed on the second adhesion layer to form a multilayer film. When refractive indices of the base material, the first adhesion layer, the second adhesion layer, and the hard coat layer are η1, η2, η3, and η4, respectively, the refractive indices are adjusted so as to satisfy the following formulae (1) to (3) to prevent rainbow unevenness.in-line-formulae description="In-line Formulae" end="lead"?(η1/η4)1/2×0.95≦η2/η3≦(η1/η4)1/2×1.05  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?η1<η4  (2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?η2<η3  (3)in-line-formulae description="In-line Formulae" end="tail"?The two adhesion layers can enhance the adhesive strength with the base material.

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