摘要:
Provided is a phase plate comprising a light transmitting base, an alignment layer formed on said base, and a film formed on said alignment layer by a liquid crystalline polymer which exhibits a nematic orientation in the state of liquid crystal and assumes a glassy state at a temperature below the liquid crystal transition point of the polymer.
摘要:
The present invention discloses a liquid crystal color display device comprising;a liquid crystal cell comprising a pair of substrates, a liquid crystal layer positioned between the substrates and transparent electrodes on the substrates to apply voltage to the layer;a pair of polarizers positioned on opposite sides of the cell; anda combination of a color filter film and an optical phase plate positioned between the liquid crystal layer and at least one of the polarizers:wherein the phase plate comprises a film of liquid crystal polymer composition having polyester as a main constituent, being thermotropic and having a glass transition point, and the device is high in productivity, light in weight, good in color reproducibility, good in contrast, excellent in color tone display dependency upon viewing angle and wide in viewing angle.
摘要:
Disclosed herein is a substrate with a liquid crystal polymeric thin film comprising a substrate, an orientation film formed on said substrate and a thermotropic liquid crystal polymeric thin film formed on said orientation film, in which the orientation film comprises a polyimide having a glass transition point of higher than 300.degree. C. obtained by cyclizing a polyamic acid or its derivative coated on said substrate and applying a rubbing treatment.
摘要:
Disclosed herein is a method of orienting a liquid crystal polymer which comprises coating and drying a solution of a polymeric compound showing a thermotropic liquid crystal property on the surface of a plastic substrate applied with a rubbing treatment, and subjecting to a heat-treatment at a temperature that the liquid crystal polymer exhibits a liquid crystal phase.
摘要:
A highly orientated, liquid crystalline polymer having a light controlling function and suitable for use in the optoelectronic field is prepared by applying a solution of a polymer which exhibits a thermotropic liquid crystallinity onto a stretched polymer film, drying the applied solution, and thereafter heat-treating the thus-coated film at a temperature at which said liquid crystalline polymer exhibits a liquid crystal phase, for a time sufficient for the molecules of the liquid crystalline polymer to be orientated.
摘要:
The present invention provides a compensator for liquid crystal display comprising a light transmitting base, an alignment layer formed on the base, and a film formed on the alignment layer by a liquid crystalline polymer which contains as a main component a polyester consisting essentially of structural units (A) and (B) represented by the following formulae: ##STR1## (B) --O--R--O-- where R represents a straight chain or branched, divalent, aliphatic hydrocarbon group having 2 to 20 carbon atoms in which the hydrogen atoms may be substituted by halogen, phenyl, or alkoxy.
摘要:
A compensator for liquid crystal display which is composed of:a light transmitting base;an alignment layer formed on said base; anda film formed on said alignment layer by a liquid crystalline polymer which exhibits a twisted nematic orientation in the state of liquid crystal and which assumes the state of glass at a temperature below the liquid crystal transition point thereof.
摘要:
A compensator for an active matrix type liquid crystal display using a thin film transistor is provided. The compensator is made by a film of a liquid crystalline polymer which exhibits a twisted nematic orientation in a liquid crystal state and assumes a glassy state at temperatures below a liquid crystal transition point thereof, the constituent molecules of the liquid crystalline polymer film having a helical structure with a helical axis wherein the twist angle is in the range of 70 to 150 degrees, and the product .DELTA.n.multidot.d of birefringence .DELTA.n of the liquid crystalline polymer film and film thickness,d, being in the range of 0.2 to 3.0 .mu.m.
摘要:
An optical rotator comprising a light transmitting base, an alignment film layer formed on said base, and a film layer formed of a liquid crystalline polymer. The film layer exhibits a twisted nematic orientation in the state of liquid crystal and assumes a glassy state at a temperature below a liquid crystal transition point of the polymer. The polymer is a polyester which includes an ortho-substituted aromatic unit.
摘要:
A compensator for liquid crystal display is produced by transferring a compensating layer formed by a liquid crystalline polymer on an orientating base onto a light transmitting base.