Uniaxially stretched negative birefringent film and liquid crystal display having the same
AssigneeFuji Photo Film Co., Ltd.
InventorsJunichi Yamanouchi, Yosuke Nishiura, Kentaro Shiratsuchi, Satoru Toda
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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.
Claims14
A uniaxially stretched birefringent film having a negative birefringence, comprising a graft copolymer which is obtained by grafting, by addition-polymerization, at least one monomer selected from styrene and derivatives thereof to a polymer having an unsaturated double bond.
A uniaxially stretched birefringent film having a negative birefringence, comprising a graft copolymer containing an antioxidant in an amount of 0.01 to 10 weight %, said graft copolymer being obtained by grafting, by addition-polymerization, at least one monomer selected from styrene and derivatives thereof to a polymer having an unsaturated double bond.
A liquid crystal display which comprises a liquid crystal cell comprising a pair of substrates provided with a transparent electrode and a twist-orientated nematic liquid crystal sealed therebetween, and at least two birefringent films comprising at least one uniaxially stretched film having a negative birefringence wherein;
- said uniaxially stretched film having a negative birefringence comprises a graft copolymer which is obtained by grafting, by addition-polymerization, at least one monomer selected from styrene and derivatives thereof to a polymer having an unsaturated double bond.
A liquid crystal display which comprises a liquid crystal cell comprising a pair of substrates provided with a transparent electrode and a twist-oriented nematic liquid crystal sealed therebetween, and at least two birefringent films comprising at least one uniaxially stretched film having a negative birefringence wherein;
- said uniaxially stretched film having a negative birefringence comprising a graft copolymer containing an antioxidant in an amount of 0.01 to 10 weight graft copolymer being obtained by grafting, by addition-polymerization, at least one monomer selected from styrene and derivatives thereof to a polymer having an unsaturated double bond.
Dependencies are inferred from the claim text.