Method of producing a substrate coated with a film of liquid crystal material and method of producing a liquid crystal optical device
First Claim
1. A method of producing a flexible substrate coated with a film of a ferroelectric liquid crystal material, wherein the substrate bears an electrode structure on its surface and a side of the substrate bearing the electrode structure is coated with the film of the ferroelectric liquid crystal material, comprising:
- applying the ferroelectric liquid crystal material directly to the electrode-bearing side of the substrate by pressing an impregnating matter impregnated with the ferroelectric liquid crystal material to the electrode-bearing side of the substrate to form the film of the liquid crystal material on said electrode-bearing side while the area in the electrode-bearing side of the flexible substrate in which the electrode-bearing side of the flexible substrate is in contact with the impregnating matter is being moved;
said flexible substrate coated with the film of the ferroelectric liquid crystal material being adapted to be laminated with another flexible substrate bearing an electrode structure on its surface so that the film is located between the electrode-bearing sides of the substrates, with the film of the ferroelectric liquid crystal material being in contact with the electrode-bearing sides of the substrates, and said film of the ferroelectric liquid crystal material being adapted to be oriented by bending of the laminate, and the bending of the laminate being conducted by bending the laminate along a cylindrical surface of a roll having an axis so that the ferroelectric liquid crystal material is oriented along a direction in which the axis of the roll extends.
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Abstract
A substrate coated with a film of liquid crystal material having a uniform thickness is produced efficiently by applying the liquid crystal material to the electrode side of a substrate using an impregnating matter impregnated with the liquid crystal material, and such a method ensures uniform thickness even for a film of liquid crystal material having a large area. A liquid crystal optical device having a uniform optical quality and a large area is produced efficiently by coating a flexible substrate with a film of liquid crystal material using the method described above, laminating the coated flexible substrate with another flexible substrate, with the film of the liquid crystal material disposed between the electrode sides of the flexible substrates, and orienting the liquid crystal material in thus obtained laminate by subjecting the laminate to bending treatment.
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Citations
15 Claims
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1. A method of producing a flexible substrate coated with a film of a ferroelectric liquid crystal material, wherein the substrate bears an electrode structure on its surface and a side of the substrate bearing the electrode structure is coated with the film of the ferroelectric liquid crystal material, comprising:
- applying the ferroelectric liquid crystal material directly to the electrode-bearing side of the substrate by pressing an impregnating matter impregnated with the ferroelectric liquid crystal material to the electrode-bearing side of the substrate to form the film of the liquid crystal material on said electrode-bearing side while the area in the electrode-bearing side of the flexible substrate in which the electrode-bearing side of the flexible substrate is in contact with the impregnating matter is being moved;
said flexible substrate coated with the film of the ferroelectric liquid crystal material being adapted to be laminated with another flexible substrate bearing an electrode structure on its surface so that the film is located between the electrode-bearing sides of the substrates, with the film of the ferroelectric liquid crystal material being in contact with the electrode-bearing sides of the substrates, and said film of the ferroelectric liquid crystal material being adapted to be oriented by bending of the laminate, and the bending of the laminate being conducted by bending the laminate along a cylindrical surface of a roll having an axis so that the ferroelectric liquid crystal material is oriented along a direction in which the axis of the roll extends. - View Dependent Claims (2, 3, 4)
- applying the ferroelectric liquid crystal material directly to the electrode-bearing side of the substrate by pressing an impregnating matter impregnated with the ferroelectric liquid crystal material to the electrode-bearing side of the substrate to form the film of the liquid crystal material on said electrode-bearing side while the area in the electrode-bearing side of the flexible substrate in which the electrode-bearing side of the flexible substrate is in contact with the impregnating matter is being moved;
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5. A method of producing a liquid crystal optical device wherein a ferroelectric liquid crystal material is enclosed between two flexible substrates bearing on their surfaces facing each other their respective electrode structures, comprising the steps of:
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(a) applying the ferroelectric liquid crystal material directly to a side of one of the flexible substrates bearing the electrode structure by pressing an impregnating matter impregnated with the ferroelectric liquid crystal material to the electrode-bearing side of the flexible substrate, while the area in the electrode-bearing side of the flexible substrate in which the electrode-bearing side of the flexible substrate is in contact with impregnating matter is being moved, to coat the electrode-bearing side of the flexible substrate with a film of the ferroelectric liquid crystal material; (b) laminating the flexible substrate coated with the film of the ferroelectric liquid crystal material with another flexible substrate of said two flexible substrates, with the film of the ferroelectric liquid crystal material disposed between the electrode-bearing sides of the flexible substrates and in contact with the electrode-bearing sides of the flexible substrates, to form a laminate; and (c) orienting the ferroelectric liquid crystal material in the laminate by subjecting the laminate to a bending treatment in which the laminate is bent along a cylindrical surface of a roll having an axis so that the ferroelectric liquid crystal material is oriented along a direction in which the axis of the roll extends. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification