Transparent heat-resistant resin optical material and film
申请人:TOSOH CORPORATION
公开号:US20040063887A1
公开(公告)日:2004-04-01
A transparent heat-resistant resin optical materials having excellent heat resistance and dynamic characteristics, having negative birefringence and exhibiting a high refractive index and a high Abbe number, especially optical compensating members such as films, sheets and retardation films for LCD display element. The transparent heat-resistant resin optical material is made of a copolymer containing a specific olefin residue unit and a specific N-phenyl-substituted maleimide residue unit and having a weight average molecular weight, as reduced into standard polystyrene, of from 5×10
3
to 5×10
6
, the transparent heat-resistant resin optical material exhibiting negative birefringence; and a retardation film having a relationship of three-dimensional refractive indexes of nz≧ny>nx, nz>ny≧nx, or nz>nx≧ny.
Resin composition for optical film, optical film and process for producing the optical film
申请人:TOSOH CORPORATION
公开号:US20040190138A1
公开(公告)日:2004-09-30
A resin composition having excellent heat resistance and dynamic characteristic and having excellent characteristics as a composition for optical films exhibiting negative birefringence, an optical film exhibiting negative birefringence comprising the resin composition, and a process of producing the optical film are provided. The resin composition comprises (a) 30-95% by weight of a copolymer containing an &agr;-olefin residual group unit and an N-phenyl-substituted maleimide residual group unit and having a weight average molecular weight, as reduced into standard polystyrene, of 5×10
3
to 5×10
6
; and (b) 70-5% by weight of an acrylonitrile-styrene based copolymer, a weight ratio of an acrylonitrile residual group unit to a styrene residual group unit being 20/80 to 35/65, and having a weight average molecular weight, as reduced into standard polystyrene, of 5×10
3
to 5×10
6
.
MUSTAFAEV A. M.; NOVIKOV S. N.; GUSEJNOV M. M.; ADIGEZALOV N. R., REAKTS. SPOSOBNOST ORGAN. SOED., 23,(1986) N 1/81, 5-11
作者:MUSTAFAEV A. M.、 NOVIKOV S. N.、 GUSEJNOV M. M.、 ADIGEZALOV N. R.
DOI:——
日期:——
WIDE-VIEWING ANGLE COMPENSATION FILM AND TRANSMISSION TYPE LIQUID-CRYSTAL DISPLAY EMPLOYING THE SAME
申请人:OBARA Naoto
公开号:US20060216436A1
公开(公告)日:2006-09-28
A wide-viewing angle compensation film contains a polarizing plate and an optical compensation film which exhibits negative birefringence and has an in-plane retardation (Re
1
) of 60-220 nm and an orientation parameter (Nz) in the range of 0±0.05, the optical compensation film exhibiting negative birefringence and the polarizing plate being stacked so that the slow axis of the compensation film is perpendicular or parallel to the absorption axis of the polarizing plate; and a transmission type liquid-crystal display contains a liquid-crystal cell and the wide-viewing angle compensation film disposed on at least one side of the cell.