Liquid crystal display

Details Liquid crystal display Liquid crystal display

2005-02-10

2008-09-16

Visconti, Geraldina (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Liquid crystal process, composition, or product

C428S001100, C428S001200, C428S001300

Reexamination Certificate

active

07425394

ABSTRACT:
A main object of the present invention is to provide a liquid crystal display using a ferroelectric liquid crystal, showing the mono-stability operation mode using a material showing the chiral smectic C phase via the smectic A phase in the temperature cooling process as the ferroelectric liquid crystal.The present invention achieves the above-mentioned object by providing a liquid crystal display with a ferroelectric liquid crystal sandwiched between two substrates, wherein an electrode and a photo alignment layer are formed successively each on the surfaces of the substrates facing with each other, with the constituent materials for the above-mentioned photo alignment layers having compositions different with each other with the above-mentioned ferroelectric liquid crystal sandwiched therebetween, and the above-mentioned ferroelectric liquid crystal shows the chiral smectic C phase via the smectic A phase in the temperature cooling process, and it shows the mono-stability in the above-mentioned chiral smectic C phase.

REFERENCES:
patent: 2005/0233094 (2005-10-01), Sawatari et al.
Nonaka, T., Li, J., Ogawa, A., Hornung, B., Schmidt, W., Wingen, R., and Dubal, H., 1999, Liq. Cryst., 26, 1599., Fig 4.

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