Driving method for liquid crystal cell and liquid crystal appara

Details Driving method for liquid crystal cell and liquid crystal appara Driving method for liquid crystal cell and liquid crystal appara

1988-11-16

1990-04-17

Heyman, John S.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

350350S, 350339R, 350341, 340805, G02F 1133

Patent

active

049174703

ABSTRACT:
A driving method for a liquid crystal cell of the type comprising a pair of oppositely spaced electrodes and a memory type liquid crystal disposed between the oppositely spaced electrodes, the driving method comprising: applying a driving voltage waveform provided with an attenuation slope at the falling part thereof.

REFERENCES:
patent: 3957349 (1976-05-01), Nelson
patent: 4024529 (1977-05-01), Sakai
patent: 4508429 (1985-04-01), Nagae et al.
patent: 4529271 (1985-07-01), Berreman et al.
patent: 4649517 (1987-03-01), Kitazima et al.
patent: 4681404 (1987-07-01), Okada et al.
patent: 4738515 (1988-04-01), Okada et al.

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