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Liquid crystal device with plural polymer network films
| Details |
Inventors: Ishii, Yutaka; Yamamoto, Yoshitaka;
Assignee: Sharp Kabushiki Kaisha (Osaka, JP)
Primary Examiner: Sikes; William L.
Assistant Examiner: Miller; Charles
Attorney, Agent or Firm: Conlin; David G., Neuner; George W., Oliver; Milton
To present a liquid crystal device high in contrast, bright and possessing high speed response characteristics, and to present electronic appliances such as liquid crystal display device and image pickup apparatus of high contrast and brightness, copier, printing plate process machine, facsimile communication apparatus, optical communication apparatus and image operation apparatus. A liquid crystal device comprising a pair of substrates forming electrodes respectively on the confronting surfaces, a power supply for applying voltage to the electrodes, and first and second liquid crystal layers interspaced between the pair of substrates, in which the first and second liquid crystal layers are contained in a three-dimensional reticular high molecular weight compound, the directions of orientation of liquid crystal molecules are aligned almost in one direction, and the directions of their orientations are mutually different near the substrates. |
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DETAILED DESCRIPTION It is hence a primary object of the invention to present a liquid crystal device high in contrast and brightness and possessing high speed response characteristics, and moreover to present, by using the liquid crystal device, an electronic apparatus such as liquid crystal display device, image pickup device, copier, printing plate process device, facsimile communication apparatus, optical communication apparatus and image operation means of high contrast and brightness.
The invention presents a liquid crystal device having: a pair of substrates having electrodes formed on confronting surfaces, means for applying voltage to the electrodes, and a liquid crystal interposed between the pair of substrates, wherein the liquid crystal is contained in a high-molecular compound, the directions of orientation of liquid crystal molecules are aligned almost in one direction, and the directions of orientation are mutually different near each substrate.
In the invention, the liquid crystal comprises a dichroic pigment.
The invention presents a liquid crystal device comprising: a pair of substrates disposed oppositely, a pair of transparent electrodes respectively formed on the confronting surfaces of the pair of substrates, a pair of orientation films respectively formed on the surfaces of the pair of electrodes, means for applying voltage to the pair of electrodes, and a liquid crystal interposed between the pair of substrates, wherein the liquid crystal is formed by stacking two liquid crystal layers, each liquid crystal layer is composed by containing liquid crystal molecules in the polymer network, and the directions of orientation of liquid crystal molecules are almost aligned in one direction, and the directions of orientation of liquid crystal molecules of each liquid crystal layer are mutually crossing orthogonally.
In a first embodiment of the invention, the liquid crystal layers contain a liquid crystal of which dielectric constant is positive, and the molecules are in horizontal orientation state when no voltage is applied
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LCD 
