Liquid crystal device with pixel electrodes in an opposed stripe

Details Liquid crystal device with pixel electrodes in an opposed stripe Liquid crystal device with pixel electrodes in an opposed stripe

1994-07-26

1995-07-18

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 55, G02F 11343

Patent

active

054346908

ABSTRACT:
Between the substrates with electrodes arranged to face each other, there is held a neamtic liquid crystal layer having a molecular arrangement capable of obtaining two or more directions of the tilt direction when an electric field is applied. The electrode structure is formed by a region having the conductive sections the width of which is 50 .mu.m or less in the widest part and the non-conductive sections the width of which is 50 .mu.m or less in the widest part per pixel. Between the substrates arranged to face each other, the conductive sections and non-conductive sections are opposed to each other at least per pixel in a part of the region in the pixel, and given the width of the narrowest part of the non-conductive sections as S, and the distance between the electrodes of the substrates arranged to face each other as D, the relationship of D.gtoreq.S/2 is satisfied. With this structure, it is possible to obtain a liquid crystal display device having a high light scattering characteristic at a low driving voltage, and also, with a high gradation having a bright contrast ratio. There is no inverted display even when a gradation display is executed, and a liquid crystal display device can be obtained with an extremely wide viewing angle. These characteristics can be sufficiently maintained in practice in a state of a voltage being applied.

REFERENCES:
patent: 5084778 (1992-01-01), DeJule et al.
patent: 5233449 (1993-08-01), Shioji et al.
"Field-Controllable Liquid-Crystal Phase Grating", Hori et al., IEEE Transactions On Electron Devices, vol. ED-26, No.11, pp. 1734-1737, Nov. 1979.
"Liquid Crystal Display Devices Obtained with Scattering Properties of Microlens Effects", Nose et al., Japan Display '89, pp. 396-399, 1989.

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