Direct view display based on light diffraction from a...

Details Direct view display based on light diffraction from a... Direct view display based on light diffraction from a...

2006-05-23

2006-05-23

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Lens or prism separate from projection system

Reexamination Certificate

active

07050126

ABSTRACT:
A direct view display device based on light reflection and diffraction from a deformable material layer under influence of an electric field. The display device comprises a plurality of pixel cells, each cell has at least a first prism surface to support the deformable material, such that when the electric field is off, a light beam travels through the first prism surface and the deformable material is reflected via total internal reflection through the first prism surface to a second prism surface, whereby the light beam is directed toward a beam blocker. When the electric field is on, the deformable material forms a rippled surface to diffract the encountering light beam, allowing part of the light beam to avoid the beam blocker. A microlens is used for each pixel cell to focus the light beam at the beam blocker.

REFERENCES:
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patent: 5504597 (1996-04-01), Sprague et al.
patent: 6437921 (2002-08-01), Whitehead
patent: 6445433 (2002-09-01), Levola
patent: 6603444 (2003-08-01), Kawanami et al.
patent: 6657700 (2003-12-01), Sako et al.
patent: WO 02/091059 (2002-11-01), None

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