Liquid crystal display with liquid crystal layer and ferroelectr

Details Liquid crystal display with liquid crystal layer and ferroelectr Liquid crystal display with liquid crystal layer and ferroelectr

1997-02-27

1999-11-16

Sikes, William L.

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

349 42, 349 49, 345 9, G02F 1136, G02F 1135, G09G 500

Patent

active

059867248

ABSTRACT:
A liquid crystal display device having a liquid crystal layer driven by a data signal which comprises a TFT for selecting the data signal; and a ferroelectric layer of which a polarized state is controlled corresponding to the data signal selected by the TFT, and the liquid crystal layer responds to the polarized state of the ferroelectric layer, and the liquid crystal layer is driven when the liquid crystal layer responds to the polarized state of the ferroelectric layer. Since the ferroelectric layer can keep stable the polarized state for a long duration, a driving frequency can be reduced substantially to a substantially DC level, and power consumption is reduced to a great extent. In addition, the ferroelectric layer formed in a pixel divides the liquid crystal corresponding to the polarized domains of the ferroelectric layer, thereby showing an analogous grayscale image.

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patent: 5473449 (1995-12-01), Takemura et al.

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