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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorKazufumi Ogawa
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A positive resist mainly composed of a novolak resin and comprising a naphthoquinone diazido-based photosensitizer as an energy beam sensitive resin (e.g., a photosensitive resin) is applied in a thickness of 0.1 to 0.2 μm to a surface of a glass substrate 1 provided with transparent electrodes and dried so as to form a photosensitive film. Next, using a mask, the film is exposed to ultraviolet rays (365 nm). Then, moisture in the air reacts with the resist in an exposed portion 2′, thereby generating —COOH groups, with which CH3(CH2)18SiCl3 is allowed to react so as to cause a dehydrochlorination reaction, thereby forming a monomolecular chemisorption film 6 comprising carbon chains 8. This film is used as an alignment film. Thus, the present invention provides a method for producing a uniform and thin alignment film for use in a liquid crystal display panel with a high efficiency without performing a rubbing treatment, and a method for producing a display panel using the same.
A liquid crystal alignment film, which is a film wherein a silane-based surfactant having a linear carbon chain and Si is chemically adsorbed via an energy beam sensitive resin film for generating functional groups containing active hydrogen by energy beam irradiation formed on a predetermined surface of a substrate, where the linear carbon chains are aligned in a specific direction.
A liquid crystal alignment film, which is a monomolecular film formed on a surface of a substrate provided with desired electrodes, wherein the molecules constituting the film have a desired tilt and are bonded and fixed to the surface of the substrate at one end while being aligned uniformly in a specific direction.
A liquid crystal alignment film, which is a monomolecular film formed on a surface of a substrate provided with desired electrodes, wherein the molecules constituting the film have carbon chains or siloxane bond chains, and at least a part of the carbon chain or the siloxane bond chain contains at least a functional group for controlling a surface energy of the film.
A liquid crystal alignment film, wherein a resin film transparent in visible light range and having energy beam sensitive groups and thermoreactive groups is formed directly on electrodes or indirectly via an arbitrary thin film, and at least the energy beam sensitive groups are reacted and crosslinked.
20 The liquid crystal alignment film according to claim 18, wherein the energy beam sensitive groups, the thermoreactive groups and hydrocarbon groups are introduced as side chain groups in the resin film.
A method for producing a liquid crystal alignment film comprising the steps of applying and forming an energy beam sensitive resin film for generating functional groups containing active hydrogen by energy beams directly or indirectly via an arbitrary thin film on a predetermined surface of a substrate provided with electrodes, irradiating the surface of the resin film with energy beams in an arbitrary pattern, contacting the irradiated resin film with a chemisorption solution containing a silane-based surfactant having linear carbon chains and Si groups, washing the substrate with a solvent incapable of dissolving the resin film, thereby forming one layer of a monomolecular film formed of the surfactant selectively in the irradiated portion, and aligning and fixing the linear carbon chains in the surfactant molecules.
A method for producing a monomolecular liquid crystal alignment film comprising the steps of contacting a substrate provided with electrodes with a chemisorption solution so as to cause a chemical reaction between molecules of a surfactant in the adsorption solution and a surface of the substrate, thereby bonding and fixing the surfactant molecules to the surface of the substrate at one end, washing the substrate with an organic solvent, and tilting the substrate in a desired direction so as to drain off the solvent, thereby aligning the fixed molecules in the direction in which the solvent was drained off.
A method for producing a monomolecular liquid crystal alignment film comprising the steps of contacting a substrate provided with electrodes with a chemisorption solution produced by using a silane-based surfactant containing carbon chains or siloxane bond chains, at least a part of the carbon chain or the siloxane bond chain containing at least one functional group for controlling a surface energy of a formed film, thereby causing a chemical reaction between the surfactant molecules in the adsorption solution and the surface of the substrate so as to bond and fix the surfactant molecules to the surface of the substrate at one end.
A method for producing a liquid crystal alignment film comprising the steps of applying and forming a resin film transparent in a visible light range and having energy beam sensitive groups and thermoreactive groups on a predetermined surface of a substrate provided with electrodes directly or indirectly via an arbitrary thin film, and at least irradiating the resin film with energy beams through an arbitrary mask so as to react and crosslink the energy beam sensitive groups.
A liquid crystal display apparatus comprising a pair of substrates, electrodes and alignment films, the electrodes being formed on the surfaces of the substrates, the alignment films being formed thereon, liquid crystal being interposed between the counter electrodes on the two substrates via the alignment films,
A liquid crystal display apparatus, wherein a film is formed as an alignment film for liquid crystal directly on a surface provided with electrodes on at least one substrate of two substrates provided with counter electrodes or indirectly via another film, the film being a monomolecular film formed of a silane-based surfactant having linear carbon chains or siloxane bond chains, molecules constituting the film having a desired tilt and being bonded and fixed to the surface of the substrate at one end while being aligned uniformly in a specific direction, liquid crystal being interposed between the counter electrodes on the two substrates via the alignment film.
A liquid crystal display apparatus, wherein a film is formed as an alignment film for liquid crystal directly on a surface provided with electrodes of at least one substrate of two substrates provided with counter electrodes or indirectly via another film, the film being constituted by molecules containing carbon chains or siloxane bond chains, a part of the carbon chain or the siloxane bond chain containing at least one functional group for controlling a surface energy of the film, liquid crystal being interposed between the counter electrodes on the two substrates via the alignment film.
A liquid crystal display apparatus, wherein a resin film transparent in a visible light range and having energy beam sensitive groups and thermoreactive groups is formed directly on electrodes or indirectly through an arbitrary thin film, and at least the energy beam sensitive groups are reacted and crosslinked, the thus obtained liquid crystal alignment film being formed on electrodes on at least one substrates of two substrates provided with counter electrodes, liquid crystal being interposed between the counter electrodes on the two substrates via the resin film.
A method for producing a liquid crystal display apparatus comprising the steps of applying and forming an energy beam sensitive resin film for generating functional groups containing active hydrogen by energy beams directly or indirectly via an arbitrary thin film on a first substrate including first electrode arrays arranged in a matrix beforehand, irradiating the surface of the resin film with energy beams in an arbitrary pattern, contacting the substrate with the irradiated resin film with a chemisorption solution containing a silane-based surfactant having linear carbon chains and Si, washing the substrate with a solvent incapable of dissolving the resin film so as to form one layer of a monomolecular film formed of the surfactant selectively in the irradiated portion, and aligning and mixing the linear carbon chains, attaching the first substrate including the first electrode arrays to a second substrate including second electrodes or electrode arrays so that the respective electrodes are opposed with a predetermined gap, and injecting predetermined liquid crystal between the first substrate and the second substrate.
A method for producing a liquid crystal display apparatus comprising the steps of contacting a first substrate including first electrode arrays arranged in a matrix beforehand with a chemisorption solution directly or after forming an arbitrary thin film so as to cause a chemical reaction between the surfactant molecules in the adsorption solution and the surface of the substrate, thereby bonding and fixing the surfactant molecules to the surface of the substrate at one end, washing the substrate with an organic solvent, tilting the substrate in a desired direction so as to drain off the solvent, thereby aligning the fixed molecules in the direction in which the solvent is drained off, exposing the substrate to light polarized in a desired direction through a polarizing plate so as to align the orientations of the surfactant molecules uniformly in a specific direction at a desired tilt, attaching the first substrate including the first electrode arrays to a second substrate or a second substrate including second electrodes or electrode arrays so that the faces provided with the electrodes are facing inward with a predetermined gap, and injecting predetermined liquid crystal between the first substrate and the second substrate.
A method for producing a liquid crystal display apparatus comprising the steps of contacting a first substrate including first electrode arrays arranged in a matrix beforehand with a chemisorption solution directly or after forming an arbitrary thin film, the chemisorption solution being produced by using a silane-based surfactant containing carbon chains or siloxane bond chains, at least a part of the carbon chain or the siloxane bond chain containing at least one functional group for controlling a surface energy of a formed film, so as to cause a chemical reaction between the surfactant molecules in the adsorption solution and the surface of the substrate, thereby bonding and fixing the surfactant molecules to the surface of the substrate at one end, washing the substrate with an organic solvent, tilting the substrate in a desired direction so as to drain off the solvent, thereby aligning the fixed molecules in the direction in which the solvent is drained off, attaching the first substrate including the first electrode arrays to a second substrate or a second substrate including second electrodes or electrode arrays so that the faces provided with the electrodes are facing inward with a predetermined gap, and injecting predetermined liquid crystal between the first substrate and the second substrate.
A method for producing a liquid crystal display apparatus comprising the steps of applying and forming a resin film transparent in a visible light range and having energy beam sensitive groups and thermoreactive groups directly or indirectly via an arbitrary thin film on a first substrate including first electrode arrays arranged in a matrix, at least irradiating the resin film with energy beams through an arbitrary mask so as to react and crosslink the energy beam sensitive groups, attaching the first substrate including the first electrode arrays to a second substrate including second electrodes or electrode arrays opposed to the first electrode arrays so that the respective faces provided with the electrodes are opposed to each other, and injecting predetermined liquid crystal between the first substrate and the second substrate.
Dependencies are inferred from the claim text.