摘要:
A liquid crystal device includes: a liquid crystal disposed between a pair of substrates; at least one of which has thereon an alignment film comprising a polyimide or polyamide imide formed by reaction between a diamine component of formula (1) shown below and at least two acid components selected from tetracarboxylic acid components having a structure of formula (2) shown below at least including a naphthalenetetracarboxylic acid component, and dicarboxylic acid components having a structure of formula (3) shown below; ##STR1## wherein R.sub.1 and R.sub.2 independently denote an alkyl group or a fluoroalkyl group having 1-10 carbon atoms; ##STR2## wherein A and B respectively denote a tetravalent or divalent organic residue comprising an aromatic ring, aromatic polycyclic ring or condensed polycyclic ring.
摘要翻译:一种液晶装置,包括:设置在一对基板之间的液晶; 其中至少一个具有取向膜,其包含通过下述式(1)的二胺组分与选自具有式(2)结构的四羧酸组分的至少两种酸组分的反应形成的聚酰亚胺或聚酰胺酰亚胺) 至少包括萘四羧酸组分和具有下面结构式(3)的二羧酸组分; 式(1):其中R 1和R 2独立地表示具有1-10个碳原子的烷基或氟代烷基; 式(2):其中+ E,crc / A /和+ E,crc / B /分别表示包含芳环,芳族多环或缩合的四价或二价有机残基 多环。
摘要:
A liquid crystal device is constituted by disposing a liquid crystal between a pair of substrates; at least one of which has thereon an alignment film comprising a polymer selected from Polymers (I)-(III) below:Polymer (I) which is a polymer composite comprising at least two polymer components including a polyamide represented by a structural unit of the following formula (1): ##STR1## wherein R.sub.11 and R.sub.12 independently denote an alkyl group having 1-10 carbon atoms or a fluoroalkyl group having 1-10 carbon atoms;Polymer (II) which is a composite polyamide having at least two species of dicarboxylic acid-originated units each represented by formula (2) below: ##STR2## wherein R.sub.21 denotes a divalent organic residue group including an aromatic ring; and a diamine-originated unit represented by formula (3) below: ##STR3## wherein R.sub.22 and R.sub.23 independently denote an alkyl group having 1-10 carbon atoms, with the proviso that at least one species of the dicarboxylic acid originated units is one having a straight molecular structure; andPolymer (III) which is a polyamide composite comprising at least two polyamides formed from an aromatic ring-containing acid component and a diamine component represented by formula (4) below: ##STR4## wherein R.sub.41 and R.sub.42 independently denote an alkyl group having 1-10 carbon atoms.
摘要:
A liquid crystal device is constituted by disposing a chiral smectic liquid crystal between a pair of substrates. At least one of the pair of substrates is provided with an alignment film of a nitrogen-containing polymer, such as a polyimide, a polyamide or a polyamideimide, having a main chain including a structural unit represented by the following formula (I): ##STR1## wherein R.sub.1 denotes a divalent aliphatic or aromatic group, and R.sub.2 and R.sub.3 independently denote a monovalent aliphatic or aromatic group, and X denotes a positive integer.
摘要:
A liquid crystal device is constituted by a pair of substrates each having an electrode thereon and disposed in parallel with each other, and a liquid crystal disposed between the substrates. At least one of the substrates has thereon an organic alignment film formed from at least one species of polymer including a polymer having an average molecular weight of at most 30,000.
摘要:
A liquid crystal device is constituted by a pair of substrates and a ferroelectric liquid crystal disposed between the substrates. At least one of the pair of substrates has thereon an alignment film of a polyimide having a recurring unit of the following formula (I): ##STR1## wherein R.sub.1 denotes a tetravalent organic residue; and X.sub.1 -X.sub.8 independently denote an alkyl group having 1-15 carbon atoms, an alkoxy group having 1-15 carbon atoms, CF.sub.3 group, halogen or hydrogen atom with the proviso that at least one of X.sub.1 -X.sub.4 is not hydrogen atom and at least one of X.sub.5 -X.sub.8 is not hydrogen atom.
摘要:
A liquid crystal device is constituted by disposing a liquid crystal between a pair of substrates; at least one of which has thereon an alignment film comprising a polymer selected from Polymers (I)-(III) below:Polymer (I), which is a polymer composite comprising at least two polymer components including a polyamide represented by a structural unit of the following formula (1): ##STR1## wherein R.sub.11 and R.sub.12 independently denote an alkyl group having 1-10 carbon atoms or a fluoroalkyl group having 1-10 carbon atoms;Polymer (II) which is a composite polyamide having at least two species of dicarboxylic acid-originated units each represented by formula (2) below: ##STR2## wherein R.sub.21 denotes a divalent organic residue group including an aromatic ring; and a diamine-originated unit represented by formula (3) below: ##STR3## wherein R.sub.22 and R.sub.23 independently denote an alkyl group having 1-10 carbon atoms, with the proviso that at least one species of the dicarboxylic acid originated units is one having a straight molecular structure; andPolymer (III) which is a polyamide composite comprising at least two polyamides formed from an aromatic ring-containing acid component and a diamine component represented by formula (4) below: ##STR4## wherein R.sub.41 and R.sub.42 independently denote an alkyl group having 1-10 carbon atoms.
摘要:
A liquid crystal device is constituted by disposing a liquid crystal between a pair of substrates; at least one of which has thereon an alignment film comprising a polymer selected from Polymers (I)-(III) below:Polymer (I) which is a polymer composite comprising at least two polymer components including a polyamide represented by a structural unit of the following formula (1): ##STR1## wherein R.sub.11 and R.sub.12 independently denote an alkyl group having 1-10 carbon atoms or a fluoroalkyl group having 1-10 carbon atoms;Polymer (II) which is a composite polyamide having at least two species of dicarboxylic acid-originated units each represented by formula (2) below: ##STR2## wherein R.sub.21 denotes a divalent organic residue group including an aromatic ring; and a diamine-originated unit represented by formula (3) below: ##STR3## wherein R.sub.22 and R.sub.23 independently denote an alkyl group having 1-10 carbon atoms, with the proviso that at least one species of the dicarboxylic acid originated units is one having a straight molecular structure; andPolymer (III) which is a polyamide composite comprising at least two polyamides formed from an aromatic ring-containing acid component and a diamine component represented by formula (4) below: ##STR4## wherein R.sub.41 and R.sub.42 independently denote an alkyl group having 1-10 carbon atoms.
摘要:
A liquid crystal device is constituted by disposing a liquid crystal between a pair of substrates; at least one of which has thereon an alignment film comprising a polyimide formed by reaction between at least two acid components including an acid component of formula (1) below and at least one component of formula (2) or (3) below and a diamine component of formula (4) below: ##STR1## wherein R.sub.1 and R.sub.2 independently denote an alkyl group.
摘要:
A ferroelectric liquid crystal device of a cell structure having a suppressed increase of cell thickness along a cell side is constituted by disposing a ferroelectric liquid crystal between a pair of electrode plates each sequentially provided with an electrode, an insulating film and an alignment film on a substrate. The alignment film is provided with a surface unevenness for suppressing a liquid crystal movement causing the increase in cell thickness. The surface unevenness is provided to the alignment film directly or to the insulating film below the alignment film, e.g., by wet forming the relevant film by using at least two solvents having different boiling points or dispersing fine particles within the relevant film, optionally followed by removal of the fine particles.
摘要:
A liquid crystal device is constituted by a pair of oppositely disposed substrates having opposing inner surfaces and opposing electrodes thereon, and a chiral smectic liquid crystal assuming two stable states disposed between the opposing electrodes. The opposing inner surfaces of the pair of substrates have been subjected to an aligning treatment such that the liquid crystal placed in one of the two stable states moves under application of an electric field in a direction identical to one in which the liquid crystal placed in the other of the two stable states moves under the application of the electric field. The liquid crystal device has an effective optical modulation region and a peripheral region outside the effective optical modulation region, wherein the effective optical modulation region and the photosensitive member have been subjected to different aligning treatments. In the liquid crystal device thus constituted, a liquid crystal movement liable to cause yellowing or fluctuation in drive parameters otherwise is effectively compensated by a liquid crystal movement in the peripheral region.