Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1993-01-28
1995-11-07
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359100, 359 84, 345 97, 345 96, G02F 11343, G02F 113
Patent
active
054651689
ABSTRACT:
A liquid crystal display includes a liquid crystal cell including a pair of substrates opposite to each other, each substrate having an electrode film and an orientation control layer thereon, and a ferroelectric liquid crystal filled between the substrates; and a pair of polarizing plates which are provided opposite to each other in the state of "cross nicol" on both sides of the liquid crystal cell; the ferroelectric liquid crystal being bistable in the liquid crystal cell, the polarizing plates being oriented in such a manner that one of their polarizing directions conforms to one of extinction positions of the ferroelectric liquid crystal under no electric field, the liquid crystal cell being applied with an alternating voltage for changing which has a positive portion which gives an apparent tilt angle from one stable state, and a negative portion which gives an apparent tilt angle relative to the other stable state, resulting in display with gray scale.
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Gouda Hiroshi
Katakami Masayuki
Katayama Mikio
Katsuse Hirofumi
Koden Mitsuhiro
Conlin David G.
Fournier Kevin J.
Parker Kenneth
Sharp Kabushiki Kaisha
Sikes William L.
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