发明公开
EP0556934A2 Ferroelectric liquid crystal electro-optic apparatus and manufacturing method thereof
失效
一种电光器件,包括它们的制备铁电液晶和方法。
- 专利标题: Ferroelectric liquid crystal electro-optic apparatus and manufacturing method thereof
- 专利标题(中): 一种电光器件,包括它们的制备铁电液晶和方法。
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申请号: EP93200899.8申请日: 1989-03-22
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公开(公告)号: EP0556934A2公开(公告)日: 1993-08-25
- 发明人: Mori, Kahoru , Yamada, Yuichiro , Yamamoto, Norio , Tokunaga, Masao , Kawamura, Ichiro , Suzuki, Yoshiichi , Hagiwara, Takashi , Aihara, Yoshihiko , Yamakawa, Noriko , Sakuma, Shigenori
- 申请人: NIPPONDENSO CO., LTD. , Showa Shell Sekiyu Kabushiki Kaisha
- 申请人地址: 1-1, Showa-cho Kariya-shi Aichi-ken JP
- 专利权人: NIPPONDENSO CO., LTD.,Showa Shell Sekiyu Kabushiki Kaisha
- 当前专利权人: NIPPONDENSO CO., LTD.,Showa Shell Sekiyu Kabushiki Kaisha
- 当前专利权人地址: 1-1, Showa-cho Kariya-shi Aichi-ken JP
- 代理机构: Dempster, Benjamin John Naftel
- 优先权: JP70212/88 19880324; JP109724/88 19880502; JP122679/88 19880519; JP309615/88 19881207; JP331308/88 19881227; JP331593/88 19881228
- 主分类号: C09K19/20
- IPC分类号: C09K19/20 ; C09K19/34 ; G09G3/36 ; G02F1/137
摘要:
There is disclosed herein a ferroelectric liquid crystal electro-optical apparatus of the matrix type comprising a liquid crystal cell having first and second electrode substrates which include n striped line electrodes and m striped column electrodes, respectively, facing at right angles each other. A ferroelectric liquid crystal is put in therebetween so as to form n by m indication picture elements. Also included in the apparatus a scanning drive device adapted to supply a scanning signal and a data signal to the n striped line electrodes and the m striped column electrodes, respectively. The ferroelectric liquid crystal shows three stable states in accordance with an application voltage and has a light transmittance with a hysteresis sufficient to a dynamic drive in accordance with increase or decrease in the application voltage in a predetermined voltage range. The scanning drive device produces a first combination signal as a signal running to variation from a voltage below a reference voltage in a predetermined one polarity voltage range to a voltage above the reference voltage and produces a second combination signal as a signal which does not exceeds the reference voltage in the range, and supplies a direct-current combination signal between the electrodes after the supply of the first or second combination signal thereto.
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