Orientation layer for a liquid crystal display and method of man

Details Orientation layer for a liquid crystal display and method of man Orientation layer for a liquid crystal display and method of man

1979-05-04

1980-07-22

Hoffman, James R.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

427 57, C09K 334, G02F 113

Patent

active

042138108

ABSTRACT:
An orientation layer for liquid crystal displays and a method for its construction is provided. Ultrasonic waves are used to create a flat, stationary wave field which is used to direct the deposition of material in order form parallel ridges and associated grooves on an orientation layer in order to orient the liquid crystals. Where the ridges are composed of a conductive or dichroitic material and the grooves have an interval which approximately corresponds to one half of the wavelength of the illuminating light, the orientation layer both orients the liquid crystals and functions as a grid polarizer.

REFERENCES:
patent: 3046839 (1962-07-01), Bird et al.
patent: 3941901 (1976-03-01), Harsch
Janning, "Thin Film Surface Orientation for Liquid Crystals", Appl. Phys. Lett., 21(#4), pp. 173-174, Aug. 15, 1972.
Meyerhofer, "New Technique of Aligning Liquid Crystals on Surfaces", Appl. Phys. Lett., 29(#11), pp. 691-692, Dec. 1, 1976.
Chabicovsky et al., "Liquid-Crystal Cells with Special Electrodes for the Generation of Uniform Colors by Optical Birefringence", IEEE Trans. on Electron Dev. ED-24 (#7), Jul. 1977, pp. 807-810.
Greubel et al., "The Fluorescence Activated Display `Flad`", Electronik 1977, (#6), pp. 55-56.

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