Protective film for polarizing plate

Details Protective film for polarizing plate Protective film for polarizing plate

2006-12-12

2006-12-12

Ton, Toan (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S096000, C349S187000, C359S483010

Reexamination Certificate

active

07148942

ABSTRACT:
A protective film for polarizing plate is disclosed in which an contact angle of the surface in contact with a polarizer with respect to pure water is less than 55° and the surface in contact with a polarizer becomes hydrophilic due to a plasma treatment.In such a manner, the protective film for the polarizing plate is readily adhered with a polyvinyl alcohol film employed as a polarizer and can be produced employing processing which is safe in work and does not adversely affect the environment. Thus highly efficient protective film for the polarizing plate, which exhibits excellent adhesion with a polyvinyl alcohol film, and a polarizing plate employing the same, are provided.

REFERENCES:
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patent: 5270259 (1993-12-01), Ito et al.
patent: 5425832 (1995-06-01), Kusano et al.
patent: 5543017 (1996-08-01), Uchiyama et al.
patent: 2 120 827 (1983-12-01), None
patent: 61245107 (1986-10-01), None

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