Diagonally offset, dielectric anisotropy inversion, liquid cryst

Details Diagonally offset, dielectric anisotropy inversion, liquid cryst Diagonally offset, dielectric anisotropy inversion, liquid cryst

1986-03-10

1987-06-09

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

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

340784, 350336, 350346, 355 3R, G02F 1133, G03G 1500, G09F 900

Patent

active

046716165

ABSTRACT:
A liquid crystal optical device including a plurality of optical shutters is provided. The optical device includes a first glass substrate having N common electrodes disposed thereon and a second glass substrate having N signal electrodes disposed thereon, the glass substrates spaced apart and opposed to each other so that the electrodes are crossed. A liquid crystal material including a nematic liquid crystal having dielectric anisotropy which becomes 0 at a crossing frequency (fC) of 100 KHz or below at atmospheric temperatures including a optically active material encapsulated between the glass substrates. Polarizing plates are disposed on the outside of the liquid crystal panel and the device is driven in a N time-sharing mode by applying the driving signals to the common electrode and the signal electrodes. The optical device is particularly well suited for use in an optical printer in view of the rapid response times.

REFERENCES:
patent: 4009934 (1977-03-01), Goodwin et al.
patent: 4236155 (1980-11-01), Nagata
patent: 4278328 (1981-07-01), Mukoh et al.
patent: 4297022 (1981-10-01), Lester
patent: 4386836 (1983-06-01), Aoki et al.
K. Metz, "Matrix Addressing of Non-Emissive Displays", Non Emissive Electro-Optical Displays, pp. 261-289, 1975.

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