Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1994-06-23
1996-06-25
Gross, Anita Pellman
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 52, 359 81, G02F 113
Patent
active
055305679
ABSTRACT:
A polymer dispersed liquid crystal display device includes opposing substrates having transparent electrodes formed on opposing surfaces thereof, and a composite film arranged between the substrates and having an arrangement obtained by dispersing a liquid crystal in a polymer. The composite film includes a phase-separation polymer dispersed liquid crystal layer constituted by a composite film consisting of a liquid crystal and a polymer, and liquid crystal capsules which are dispersed in the phase separation polymer dispersed liquid crystal layer and in which a liquid crystal is sealed. Each of the liquid crystal capsules has an outer diameter equal to a gap between the substrate and functions as a spacer for regulating the gap between the substrate. Liquid crystal molecules in the liquid crystal capsules, like liquid crystal molecules in the polymer dispersed liquid crystal layer, are aligned in accordance with a voltage applied across the opposing electrodes to transmit or scatter incident light.
REFERENCES:
patent: 5208687 (1993-05-01), Yoshida et al.
patent: 5394256 (1995-02-01), Yamada et al.
Casio Computer Co. Ltd.
Dudek James A.
Gross Anita Pellman
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