Liquid crystal display with a ferroelectric film control layer

Details Liquid crystal display with a ferroelectric film control layer Liquid crystal display with a ferroelectric film control layer

1993-07-23

1995-12-05

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359100, G02F 11343, G02F 113

Patent

active

054734495

ABSTRACT:
A liquid crystal display capable of displaying stable images by the use of a ferroelectric film is driven by scanning the screen once per sub-frame having different periods of time which are defined to integrally form a frame within which displaying an image is completed. One or more sub-frames or no sub-frame is selected to generate selection signals for displaying images. The shade of gray can be controlled in accordance with the combination of the selected sub-frames.

REFERENCES:
patent: 3725899 (1973-04-01), Greubel
patent: 4981340 (1991-01-01), Kurematsu et al.
"A New Two-Terminal Device Using Ferrolectric Polymetric Thin Film for Large-Area LCDs", pp. 18-21, Takashi Sato, Atsushi Hatta, Hiroshi Komatsu, SID 91 Digest.

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