Polarizing plate

Details Polarizing plate Polarizing plate

1983-09-22

1986-06-03

Corbin, John K.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427163, 350337, G02B 530

Patent

active

045926239

ABSTRACT:
A polarizing plate is disclosed, comprising a polarizing film and a protective layer bonded through an adhesive layer to at least one surface of the polarizing film, wherein the protective layer is a polyester film in which the minimum or maximum refractive index in a direction in parallel with the plane of the film is nearly equal to that in the direction of the film thickness and the retardation is at least 10 .mu.m. On this polarizing plate, colored interference fringes are not formed at all even if it is looked at from any direction. Thus, the polarizing plate is suitable for use in the circumstance that it is exposed to the air, or in a display wherein a liquid crystal is used.

REFERENCES:
patent: 3647278 (1972-03-01), Nakas
patent: 4268127 (1981-05-01), Oshima et al.
patent: 4387133 (1983-06-01), Ichikawa et al.
patent: 4427741 (1984-01-01), Aizawa et al.

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