Flat panel image display structures and method of manufacture

Details Flat panel image display structures and method of manufacture Flat panel image display structures and method of manufacture

2005-08-02

2005-08-02

Ton, Toan (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

C349S061000, C349S196000

Reexamination Certificate

active

06924850

ABSTRACT:
Disclosed are improved beam steering and scanning devices which utilize cholesteric liquid crystal (CLC) elements arranged in branches to form a logic tree structure. Each branch thereof comprises an active and passive CLC element; the former further comprising a half-wave retarder and an electrode and the latter only the CLC element. Each succeeding branch contains twice as many branches as a preceding branch and, by activating active CLC element electrodes under control of a programmable pulsed source, inputs applied to the first stage of a logic tree are delivered as a scanned line of electromagnetic energy or light to the imaging cells of the last stage of the logic tree. By stacking identical logic tree structures with a laser source for each tree, a flat panel imaging array or display panel is formed in which the transmission intensity losses are minimized. The resulting system can be used to produce 2-D and 3-D images by applying a modulation to the laser sources from standard television cameras, and cameras designed to capture stereo-displaced images, respectively.

REFERENCES:
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patent: 4653867 (1987-03-01), Urabe et al.
patent: 5459591 (1995-10-01), Faris
patent: 5506929 (1996-04-01), Tai et al.
Copy of PCT International Search Report of international application No. PCT/US98/27762—May 1999.

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