Abstract:
PROBLEM TO BE SOLVED: To obtain a liquid crystal alignment agent used for forming a liquid crystal alignment film which facilitates the liquid crystal orientation control, coping with the surface irregularities of a base plate as the result of the increase in density of picture elements, produces neither static electricity nor dusts, and is excellent in mass-productivity by using a polymer having a radiation- functional conjugated enone structure. SOLUTION: This agent comprises a polymer having such a functional conjugated enone structure of formula I, II, III or IV (wherein P to P , and Q to Q are each an organic group containing an aromatic ring; and R to R are each H or alkyl) that it is optically excited by radiation and then releases energy to return to a stable state in the principal chain or on the side chain. The polymer used preferably comprises a polyimide because of excellent heat resistance, although there is no limitation. A desired polyimide is obtained by using a tetracarboxylic acid dianhydride component having a structure of the formula or a diamine component. The liquid crystal alignment agent is produced by dissolving the polymer in an organic solvent, and adding thereto if necessary, e.g. a thermosetting crosslinking agent for strengthening the coating film, and a silane compound for improving the adherence.
Abstract:
PROBLEM TO BE SOLVED: To obtain a liquid crystal aligning agent useful for forming a liquid crystal aligned film excellent in heat resistance by irradiation with linearly polarized ultraviolet rays of a long wavelength by making the agent include a polymer having a specific conjugated enone structure. SOLUTION: This liquid crystal aligning agent contains a polymer having a structure selected from among groups of formulae I and II [P is an aromatic ring-containing bivalent organic group; P is an aromatic ring-containing trivalent organic group; Q and Q are each an aromatic ring-containing monovalent organic group]. The skeleton of the polymer is preferably a polyimide, which is preferably obtained by using a compound having the structure selected from formulae I and II when reacting (A) a tetracarboxylic dianhydride with (B) a diamine compound, then providing a polyamic acid and synthesizing the polyimide. For example, 2,2'-bis(4-chalconyloxy)-3,3',4,4'-biphenyltetracarboxylic dianhydride is cited as the component A having the structure.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal display element, which can be provided with an excellent liquid crystal orienting function by means of a simple operation, requires no burning, possesses low residual voltage, and is provided with high display quality. SOLUTION: Using an orienting rubbing member including an orientation applying substance containing polymer provided with a liquid crystal orienting function, the surface of a liquid crystal display element substrate material is rubbed, so that the orienting substance is stuck on the surface so as to provide the liquid crystal orientation function. A liquid crystal display element is constructed of this liquid crystal display element substrate processed by this orienting method. The orienting rubbing material is constructed of a cloth in which the orientation applying substance containing polymer provided with a liquid crystal orienting function exists on the surface.
Abstract:
PROBLEM TO BE SOLVED: To provide an evaluation method of a resin for evaluating a degree of occurrence of development defects at the stage of a resin material, and to provide a radiation-sensitive resin composition suitably usable as a chemically amplified resist. SOLUTION: The evaluation method is characterized by evaluating a degree of occurrence of development defects in a radiation-sensitive resin composition according to the following steps (1) to (4): (1) forming a film of the radiation-sensitive resin composition as an object to be evaluated on a substrate; (2) baking the film after exposure; (3) dissolving the film baked after exposure in a developer to prepare a developer solution of a predetermined concentration; and (4) measuring hydrodynamic radius in the developer solution by dynamic light scattering method. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To obtain a heat-resistant resin composition having excellent thermal aging resistance and especially suitable as a liquid crystal substrate material, a semiconductor coating material and an adhesive for lens by compounding a cyclic olefin (co)polymer with a combination of specific antioxidants. SOLUTION: The heat-resistant resin composition contains (A) a specific cyclic olefin (co)polymer and (B) at least one kind of antioxidant selected from (b-1) a phenolic antioxidant, (b-2) a phosphorus-based antioxidant and (b-3) a thioether-based antioxidant.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal alignment agent to form a liquid crystal alignment layer, which aligns liquid crystal molecules without decomposition on the layer surface in a direction parallel with the polarization direction of the polarized light pulse laser and independent of the irradiation energy in the case it is formed in a film shape and is irradiated with the polarized light pulse laser. SOLUTION: The liquid crystal alignment agent forms a liquid crystal alignment layer to which alignment controllability over liquid crystal molecules is provided by irradiation with polarized light pulse laser, which has no synchronized projecting and recessing parts caused by the irradiation with the polarized light pulse laser on its surface and which is provided with a function to align the liquid crystal molecules in parallel with the polarization direction of the irradiated polarized light pulse laser. Preferably, it comprises a polyamic acid or a polyimide composed of a tetracarboxylic acid dianhydride and a ring- structured diamine compound.
Abstract:
PROBLEM TO BE SOLVED: To obtain a polymer for forming an organic electroluminescent device, with which a thin film can be formed by the wet method, and the organic electroluminescent device that can achieve light emission high in luminous luminance and stable even during continuous driving can be provided, and a polymer composition for the organic electroluminescent device, and the organic electroluminescent device. SOLUTION: The polymer has specific structural units in its main chain. The polymer for forming the electroluminescent device is used to constitute the electroluminescent device. The polymer composition for the electroluminescent device comprises a polymer component composed of the polymer for forming the organic electroluminescent device and a complex component composed of an iridium complex that is a triplet luminescent material. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent which aligns liquid crystal molecules perpendicular to the rubbing direction by certain rubbing treatment to generate 0 deg. pretilt angle, which has good baking property and a high voltage holding rate, and/or which aligns liquid crystal molecules parallel to the polarization direction by the aligning treatment by irradiation of polarized pulse laser. SOLUTION: The liquid crystal aligning agent contains at least one kind of polymer selected from a group consisting of polyamic acid obtained by the reaction of tetracarboxylic acid dianhydrides expressed by formula (I) and diamine compounds and consisting of imidized polymers obtained by dehydrating and ring closing the above polyamic acid. In formula (I), R1 and R2 are same or different and each represents a univalent organic group or halogen atom, each of a and b is an integer 0 to 5, and when a plurality of R1 and R2 are present, they may be same or different.
Abstract:
PROBLEM TO BE SOLVED: To obtain an alkylfluorenediamine as a novel compound having a long-chain alkyl group, as well as a polyamic acid and an imidated polymer obtained by using the same, and in addition, a liquid crystal oriented film whose orientation direction cuts the rubbing direction at right angles and which has a pretilt angle of 0 deg., good sticking and a high voltage retention, to provide its manufacturing method, and a liquid crystal display element having the liquid crystal oriented film. SOLUTION: The alkylfluorenediamine is represented by formula (A) (wherein (n) is an integer of 6-20), and the polyamic acid and the imidated polymer can be obtained by using this compound as the diamine component. The liquid crystal orienting agent is composed of these polymers, and the liquid crystal oriented film and its manufacturing method are disclosed. The liquid crystal display element has this liquid crystal oriented film.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of alignment treatment of liquid crystal realizing high alignment controllability of the liquid crystal on an alignment layer which is essential for a liquid crystal display element with not performing a rubbing treatment for aligning the liquid crystal in non-contact manner and to provide a liquid crystal display element having the obtained liquid crystal alignment layer equipped on its substrate with neither defective display quality nor destruction of TFT(thin film transistor) element when the display is turned on. SOLUTION: In the method of alignment treatment of liquid crystal, the liquid crystal alignment layer formed on the substrate is irradiated with light so as to impart liquid crystal alignment properties to the liquid crystal alignment layer. The liquid crystal alignment layer contains a polymer with a chalcone structure and the polymer molecules with the chalcone structure is in a state capable of moving so as to impart the liquid crystal alignment properties to the liquid crystal alignment layer on the irradiation with the light. The liquid crystal display element equipped with the liquid crystal alignment layer obtained by this method on the substrate is also provided.