Liquid crystal device and method for driving the same using ferr

Details Liquid crystal device and method for driving the same using ferr Liquid crystal device and method for driving the same using ferr

1985-04-18

1987-10-06

Corbin, John K.

350333, G02F 113

Patent

active

046978879

ABSTRACT:
A driving method for a liquid crystal device of the type comprising a plurality of FET's each having a gate and a first and a second terminal other than the gate, a first base plate having therein a plurality of picture element electrodes each corresponding to an FET and connected to the first terminal of the FET, a second base plate having thereon counter electrodes opposite to the picture element electrodes, and a ferroelectric liquid crystal having first and second orientation states and sandwiched between the first and second base plates; the driving method comprising a first phase of forming an electric field between a first terminal and a second terminal of an FET to result in the first orientation state of the ferroelectric liquid crystal, and a second phase of forming an electric field of the polarity opposite to that of the electric field applied in said first phase between a first terminal and a second terminal of an FET to result in the second orientation state of the ferroelectric liquid crystal; the first and second phases being respectively carried out in synchronism with the application of a signal for turning on the gates of the FET' s respectively involved in the first and second phases.

REFERENCES:
patent: 4508429 (1985-04-01), Nagae et al.
patent: 4548476 (1985-10-01), Kaneko
patent: 4593978 (1986-06-01), Mourey et al.
patent: 4617646 (1986-10-01), Yang
patent: 4634226 (1987-01-01), Isogai et al.

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