A convenient synthesis of 6,6′-dialkoxythioindigo dyes suitable for doping into a liquid crystal host
摘要:
A convenient synthesis of symmetrical 6,6'-di-n-alkoxythioindigo dyes suitable for doping into a liquid crystal host is reported, along with measurements of solubility limits for the dyes in nematic and smectic liquid crystals;with broad temperature range.
Optical compensation film, viewing angle compensation integral type polarizing plate and liquid crystal display apparatus
申请人:Konica Minolta Holdings, Inc.
公开号:US20040161551A1
公开(公告)日:2004-08-19
An optical compensation film comprising a cellulose ester film is disclosed. In the film, (a) each of photoelastic coefficient C(md) in a mechanical direction and photoelastic coefficient C(td) in the transverse direction of the cellulose ester film is 1×10
−9
to 1×10
−13
Pa
−1
and C(md)|S(td)|.
A solvent and TAC particles are continuously supplied to a disperser. When the shearing of the solvent and the particles are made in a shearing section, the particles are dispersed in the solvent. The dispersion is fed to a mixer in one minute. The shearing of the dispersion is made in the mixer, the particles are swollen in the solvent in one minute. Since the shearing and the continuous feed of the swelling solution is made, the aggregation does not occur. There are no undissolved aggregates in a dope, which is obtained from the swelling solution. A film produced from the dope has no defects of luminescent spot but excellent optical properties.
Optical compensation film, polarizing plate, displaying apparatus, method for producing optical compensation film and method for producing polarizing plate
申请人:Umeda Hiroki
公开号:US20050233095A1
公开(公告)日:2005-10-20
A method for producing a roll of an optical compensation film, in the effective width of which an angle of the slow axis in the film face with the width direction of the film is within the range of ±1° and an angle of the fast axis in the film face with the length direction of the film is within the range of ±1°, wherein the angle of the fast axis in the film face with the length direction is cyclically varied by a cycle of from 1.5 m to 500 m in the length direction of the film and the minimum amplitude of the variation is within the range of from 0.1° to 1°.