Electro-optical display device

Details Electro-optical display device Electro-optical display device

1975-02-24

1977-04-12

Corbin, John K.

350157, G02F 113

Patent

active

040171566

ABSTRACT:
An electro-optical display device which has linear polarizer, a 1/4-spectrum plate, a twisted nematic electro-optical cell disposed between the polarizer and the 1/4-spectrum plate, and a power source for applying an electric field to the cell.
This device is for control, electrically, of the rotational direction of circular polarization and for electro-optical display of colors.

REFERENCES:
patent: 3784280 (1974-01-01), Bigelow
patent: 3836230 (1974-09-01), Adams et al.
Scheffer T. J., "New Multicolor LC Displays That Use a Twisted Nematic Electro-optical Cell," J. Appl. Phys. vol. 44, No. 11, Nov. 1973, pp. 4799-4803.
Shanks, I. A. "Electro-optical Coulor Effects by Twisted Nematic LC," Electronics Letters, vol. 10, No. 7, Apr. 1974, pp. 90-91.
Kahn, F. J. "Cholesteric LC for Optical Applications," Appl. Phys. Lett. vol. 18, No. 6, Mar. 1971, pp. 231-233.
Dery, D. A., "Controlling Light Behavior Through Linear, Circular and Spectrally-Selective Polarisers," Manuf. Optician, vol. 17, No. 6, Mar. 1964, pp. 268-270.

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