Liquid crystal display device and preparation and use thereof
AssigneeSumitomo Electric Industries, Ltd.
InventorsTisato Kajiyama, Junichi Ono, Tohru Kashiwagi, Kouji Hara, Kensaku Takata
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Abstract
A liquid crystal device having a pair of electrodes at least one of which is transparent and a mixture film of a side chain type liquid crystalline polymer and at least two low molecular weight liquid crystals which film is sandwiched between said pair of electrodes, wherein said mixture film contains 0.005 to 1% by weight of an electrolyte based on a total weight of the mixture film. This liquid crystal device has a high response speed and memory and is used in a variable traffic control sign, a light-adjusting window, a liquid crystal glare-proof mirror, and the like.
Claims14
A liquid crystal device comprising:
- a pair of electrodes at least one of which is transparent;
- and
- a mixture film disposed between said electrodes, said mixture film comprising:
- a side chain type liquid crystalline polymer;
- at least two low molecular weight liquid crystals;
- and
- an electrolyte which has a weight of 0.005% to 1% of a total weight of said mixture film.
A method for producing a liquid crystal device comprising the steps of:
- applying a solution containing a side chain type liquid crystalline polymer, at least two low molecular weight liquid crystals and electrolyte on a first electrode;
- drying and solidifying the applied solution to form a mixture film containing said side chain type liquid crystalline polymer, said at least two low molecular weight liquid crystals and said electrolyte;
- and
- placing a second electrode on the mixture film.
A method for producing a liquid crystal device comprising steps of:
- placing an amount of a mixture containing a side chain type liquid crystalline polymer, at least two low molecular weight liquid crystals, an electrolyte and a spacer on a surface of a first electrode film;
- placing a second electrode film on the surface of said first electrode film;
- and
- compressing said first and second electrode films from an edge portion carrying said mixture with at least one roll.
A variable traffic control signal having a liquid crystal device comprising:
- one of a smectic mixture and an induced smectic mixture having a reversible bistability between a light-transmitting state and a light-scattering state, wherein said one of said smectic mixture and said induced smectic mixture comprises:
- a liquid crystalline polymer;
- a low molecular weight liquid crystal;
- and
- 0.005% to 1.0% by weight of an electrolyte.
A light-adjusting window comprising a liquid crystal device which has a reversible bistability between a light-scattering state and a light-transmitting state;
- wherein said liquid crystal device comprises:
- a pair of transparent substrates;
- and
- a mixture film, disposed between said pair of transparent substrates, comprising:
- a liquid crystalline polymer;
- a low molecular weight liquid crystal;
- and
- 0.005% to 1.0% by weight of an electrolyte.
A liquid crystal glare-proof mirror comprising:
- a mirror body;
- and
- a liquid crystal device which has a reversible bistability between a light-scattering state and a light-transmitting state;
- wherein said liquid crystal device comprises:
- a pair of transparent substrates;
- and
- a mixture film, disposed between said pair of transparent substrates, comprising:
- a liquid crystalline polymer;
- a low molecular weight liquid crystal;
- and
- 0. 005% to 1.0% by weight of an electrolyte.
A liquid crystal glare-proof mirror comprising:
- a mirror body having a metal electrode;
- and
- a liquid crystal device which has a reversible bistability between a light-scattering state and a light-transmitting state, wherein said liquid crystal device comprises:
- a transparent substrate having a transparent electrode;
- and
- a mixture film, disposed between said metal electrode and said transparent electrode, comprising:
- a liquid crystalline polymer;
- a low molecular weight liquid crystal;
- and
- 0.005% to 1.0% by weight of an electrolyte.
Dependencies are inferred from the claim text.