Reflection type liquid crystal display with selective reflecting

Details Reflection type liquid crystal display with selective reflecting Reflection type liquid crystal display with selective reflecting

1994-01-11

1995-04-18

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 51, G02F 11335, G02F 113

Patent

active

054083443

ABSTRACT:
A reflection type liquid crystal display (LCD) made up of polymer dispersion type display elements each having a liquid crystal dispersion film in which liquid crystals are dispersed in a tridimensional microstructure implemented by a polymer or similar resin. Selective light reflecting or diffusing means introduces forwardly scattered light components from scattering pixels again into a liquid crystal layer without effecting non-scattering pixels. Hence, high reflection intensity and, therefore, high contrast is achieved. A light source unit is positioned such that at least a part of illumination light is reflected in the reflection angle range of the selective reflecting means. Hence, forward scattering with high scattered light intensity can be used, insuring extremely light white display.

REFERENCES:
patent: 4685771 (1987-08-01), West et al.
patent: 4726662 (1988-02-01), Cromack
patent: 4995701 (1991-02-01), Brown
patent: 5052784 (1991-10-01), Fergason
patent: 5299289 (1994-03-01), Omae et al.

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