1988-12-28
1991-07-09
Miller, Stanley D.
350341, 350350S, G02F 1133
Patent
active
050299875
ABSTRACT:
A ferroelectric liquid crystal shutter including two light transmitting substrates each having a transparent electrode formed on one surface thereof and an orientation film formed over the electrode, the substrates are arranged with their orientation films opposed to each other. A ferroelectric liquid crystal having spontaneous polarization is sandwiched between the two substrates. The orientation film of one of the substrates is a first polymer film capable of restricting to one direction the orientation of spontaneous polarization of liquid crystal molecules present in the vicinity of the interface between the film and the liquid crystal by a contact potential difference resulting from the contact therebetween. The other orientation film of the other substrate is a second polymer film capable of restricting to the one direction the orientation of spontaneous polarization of liquid crystal molecules present in the vicinity of the interface between the other orientation film and the liquid crystal by a contact potential difference resulting from the contact therebetween which is different from the first-mentioned potential difference.
REFERENCES:
patent: 4634228 (1987-01-01), Iwasaki et al.
patent: 4644480 (1987-05-01), Geary et al.
patent: 4723839 (1988-02-01), Nakanowatari et al.
patent: 4792211 (1988-12-01), Harada et al.
patent: 4820026 (1989-04-01), Okada et al.
patent: 4879059 (1989-11-01), Hanyu et al.
Gross Anita Pellman
Miller Stanley D.
Sharp Kabushiki Kaisha
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