Uniaxially stretched negative birefringent film and liquid cryst

Details Uniaxially stretched negative birefringent film and liquid cryst Uniaxially stretched negative birefringent film and liquid cryst

1993-06-02

1995-07-04

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 74, 359500, 428 1, G02F 11335

Patent

active

054305659

ABSTRACT:
Disclosed is a uniaxially stretched birefringent film having a negative birefringence, comprising a graft polymer which is obtained by grafting, through addition-polymerization, at least one monomer selected from styrene and derivatives thereof to a polymer having an unsaturated double bond. The liquid crystal display provided with the birefringent film is also disclosed.

REFERENCES:
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patent: 5164469 (1992-11-01), Goto et al.
patent: 5189538 (1993-02-01), Arakawa
patent: 5213852 (1993-05-01), Arakawa et al.
patent: 5245456 (1993-09-01), Yoshimi et al.
patent: 5337174 (1994-08-01), Wada et al.

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