Ferroelectric liquid crystal device and method of manufacturing

Details Ferroelectric liquid crystal device and method of manufacturing Ferroelectric liquid crystal device and method of manufacturing

1990-01-31

1992-07-21

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 67, 359 79, 359 75, 340765, G02F 113

Patent

active

051328160

ABSTRACT:
A ferroelectric liquid crystal device (81) has transparent plates (83a, 83b), on which transparent electrodes (85a, 85b) are formed, arranged opposed to each other to form a space therebetween, with ferroelectric liquid crystals (95) sealed in the space. Black masks (89b) are arranged between the transparent electrodes (85b). Portions of the black masks (89b) extend over the transparent electrodes (85b). Black masks (89a) are arranged between the transparent electrodes (85a), with portions of the black masks (89a) extending over the transparent electrodes (85a). Since black masks (89a, 89b) are provided between the transparent electrodes (85a, 85b), respectively, state of display can be made uniform in non-pixel portions. Since the black masks (89a, 89b) on the transparent electrodes (85a, 85b) prevents undesired inversion of spontaneous polarization of the liquid crystal molecules in the pixel portions, the state of display of the pixel portions can be made stable.

REFERENCES:
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patent: 4448491 (1984-05-01), Okubo
patent: 4720173 (1988-01-01), Okada et al.
patent: 4728176 (1988-03-01), Tsuboyama et al.
patent: 4733948 (1988-05-01), Kitahara
patent: 4744639 (1988-05-01), Tsuboyama
patent: 4802743 (1989-02-01), Takao et al.
patent: 4805995 (1989-02-01), Tarigoe

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