摘要:
The invention relates to a plastic film with an interference multilayer system applied thereon that comprises at least two layers. Said layers can be obtained by hardening and/or applying thermal treatment to a coating composition containing nanoscale inorganic solid particles having polymerizable and/or polycondensable organic surface groups, thereby forming a layer that is crosslinked by means of the polymerizable and/or polycondensable organic surface groups. The films can be used as optical laminating film.
摘要:
The invention relates to solid or gel-type nanocomposite material which can be polymerised, containing a) 4.9 95.9 wt. % of a soluble polymer; b) 4-95 wt. % of a partially or totally condensed silane selected from the group of epoxyalkoxysilanes, alkoxysilanes and alkylalkoxysilanes, the silane having an inorganic condensation degree of between 33-100% and an organic conversion degree of between 0-95%; c) 0-60 wt. % of an acrylate; d) 0.1-50 wt. % of surface modified nanometric particles selected from the group of oxides, sulphides, selenides, tellurides, halogenides, carbides, arsenides, antimonides, nitrides, phosphides, carbonates, carboxylates, phosphates, sulphates, silicates, titanates, zirconates, aluminates, stannates, plumbates and a mixed oxides; e) 0-50 wt.-% of a plasticiser, f) 0-5 wt. % of a thermal or photochemical cross-linking initiator, sensitizer, auxiliary wetting agent, adhesive agent, antioxidant, stabiliser, colouring agent, photochrome material and thermochrome material in relation to the total weight (dry weight) of the nanocomposite material.
摘要:
A photosensitive resin composition comprising (a) a photosensitizer having in its structure 1,2-diazidonaphthoquinone structure, and a methylene-bridged structure composed of two or more methyl-substituted phenol derivatives, (b) a polymer having both hydroxyl group and carboxyl group, or a combination of a polymer having hydroxyl group and one having carboxyl group, (c) a crosslinking agent capable of crosslinking hydroxyl group and carboxyl group, and (d) a solvent. This composition can form highly transparent films, and, in addition, patterns having high contrast can be obtained when this composition is used as a photoresist.
摘要:
The object of the present invention is to provide an alignment layer material for forming a liquid crystal alignment layer having an excellent adhesion to a glass substrate, having less dependency of display characteristics on the viewing angle with a high contrast. (Constitution) A composition used for an alignment layer material comprising a mixture of a polymer (A) which is a block copolymer containing a siloxane compound as a constituting component, and a homopolymer or copolymer (B) having the following repeating unit (1): ##STR1## is disclosed.
摘要:
A liquid-crystal display device having a liquid-crystal layer held between a pair of substrates each having a transparent electrode and an alignment film formed successively on the inner surface, characterized in that the material of the alignment film on at least one of the opposing faces between the substrates is a polymer having recurring units (I, II and III), the recurring unit (I) being represented by formula (A), ##STR1## recurring unit II being a dioxyaryl portion represented by the formula --O--Ar--O-- (where Ar is a divalent group having at least one aromatic ring which may contain at least one substituent selected from a C.sub.1-4 alkyl group, a C.sub.1-4 alkoxy group, a halogen, a phenyl and a substituted phenyl), and recurring unit (III) being a dicarboxyaryl portion represented by formula (B) ##STR2## (where Ar' may be the same as or different from Ar and has the same meaning as Ar).
摘要:
Disclosed and claimed are liquid-crystalline cyclopropylalkyl or -alkenyl or heterocyclic compounds, process for their preparation, and their use in liquid-crystalline mixtures. The novel cyclopropylalkyl or -alkenyl or heterocyclic compounds are of the general formula ##STR1## In this formula A.sup.1, A.sup.2 and A.sup.3 are unsubstituted or substituted, aromatic or heteroaromatic molecular components such as 1,4-phenylene or pyrimidine-2,5-diyl which are linked via a single bond (in the case where k and m=0) or via functional groups M.sup.1 and M.sup.2, such as CO--O or CH.sub.2 --O; j, k, l, m and n are zero, 1 or 2. The radicals R.sup.2, R.sup.3 and R.sup.4 are H or alkyl/alkenyl, R.sup.1 is alkyl/alkenyl or one of the substitutents known from LC chemistry such as an .alpha.-haloalkanoic acid radical. At least one of the components A.sup.1, A.sup.2 and A.sup.3 can be heteroaromatic, and G is alkylene or alkenylene.
摘要:
A process for producing a liquid-crystal cell which comprises the steps of:(a) providing a curable sealant portion in the periphey of the side of an electrode plate that has an electrode or electrodes;(b) (i) coating a ferroelectric liquid-crystal composition on the portion surrounded by said sealant portion, with a spacer being preliminarily provided in said portion;(ii) coating spacer-containing ferroelectric liquid-crystal composition on the portion surrounded by said sealant portion; or(iii) coating a ferroelectric liquid-crystal composition on the portion surrounded by said sealant portion and thereafter providing a spacer over said composition;(c) defoaming the coated layer of the liquid-crystal composition by heating during or after evacuation;(d) placing the other electrode plate in such a way that the side of said other electrode plate which has an electrode or electrodes faces the side of said one electrode plate containing the thermally defoamed coated layer of the liquid-crystal composition and compressing the two electrode plates together; and(e) curing said sealant.
摘要:
Switching and display elements based on ferroelectric liquid-crystals often exhibit a pronounced optical hysteresis which results in the appearance of so-called ghost images. This phenomenon can be markedly reduced or even suppressed if at least one of the two orienting layers are in direct contact with the electrodes and is composed of an electrically conductive polymer of the formula (I): ##STR1## in which R.sup.1, R.sup.2 =independently of each other, H, or straight-chain or branched alkyl or alkoxy containing 1-16 carbon atoms, or halogen,X=S, NH,Y.sup.- =BF.sub.4.sup.-, PF.sub.6.sup.-, PO.sub.4.sup.3-, AsF.sub.6.sup.-, SbCl.sub.6.sup.-, SO.sub.4.sup.2-, HSO.sub.4.sup.-, alkyl--SO.sub.3.sup.-, perfluoroalkyl--SO.sub.3.sup.-, aryl--SO.sub.3, F.sup.- or Cl.sup.-, andn is an integer from 4 to 100 andm is an integer from 1 to 30.
摘要:
This invention relates to new optically active pyrimidinylphenyl ester compounds, having a liquid crystal phase of cholesteric and/or smectic C* phase, of the formula: ##STR1## wherein R* represents an optically-active alkyl group having an asymmetric carbon atom which is ##STR2## where R.sup.0 is a straight chain alkyl group of 2 to 6 carbon atoms, R.sup.1 is a straight chain alkyl group of 1 to 5 carbon atoms, R.sup.2 is a straight chain alkyl group of 1 to 2 carbon atoms, R.sup.3 is a straight chain alkyl group of 1 to 6 carbon atoms and n is 0 or 1, R presents a straight-chain alkyl group of 7 or 8 carbon atoms or a straight-chain alkoxy group of 7 or 8 carbon atoms and A represents ##STR3## or --O--.
摘要:
A ferro-electric liquid crystal electro-optical device comprising two plates having electrodes, and ferro-electric liquid crystals, for example, chiral smetic crystals, sandwiched between the plates. The inner surface of one of the two plates has a uni-axial alignment characteristic which aligns the liquid crystal molecules in its uni-axial direction. The inner surface of the other plate has a random homogeneous characteristic which aligns the molecules nearly parallel to the plates but does not let the molecules have any predetermined directional characteristic.