Liquid crystal device and display apparatus

Details Liquid crystal device and display apparatus Liquid crystal device and display apparatus

1992-11-20

1995-06-06

Harris, C.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359103, 25229961, 2522994, G02F 113, C09K 1934, C09K 1956

Patent

active

054227488

ABSTRACT:
A liquid crystal device, comprising: a pair of substrates, and a ferroelectric liquid crystal disposed between the substrates, each of the substrates having thereon an electrode for applying a voltage to the liquid crystal and a uniaxial alignment film provided with a uniaxial alignment axis, the alignment films on the pair of substrates being substantially parallel with each other and having an identical axis direction; wherein the ferroelectric liquid crystal is disposed in such an alignment state that the liquid crystal shows a pretilt angle .alpha., a cone angle H, an inclination angle .delta. of SmC* layer, and an apparent tilt angle .theta. a satisfying relationships of: H<.alpha.+.delta. and H>.theta.a>H/2; and the ferroelectric liquid crystal comprises at least three mesomorphic compounds represented by the following formula (I): ##STR1## wherein m and n are an integer of 6 to 12, said at least three mesomorphic compounds including:

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