Liquid crystal cells – elements and systems – Liquid crystal optical element – Liquid crystal diffraction element
Patent
1998-04-17
1999-08-17
Sikes, William L.
Liquid crystal cells, elements and systems
Liquid crystal optical element
Liquid crystal diffraction element
349 57, 349 95, 349201, 349108, G02F 113, G02F 11335
Patent
active
059401591
ABSTRACT:
A color microdisplay utilizes diffraction gratings to provide an array of high efficiency color pixels. The microdisplay includes a semiconductor substrate and source of light disposed adjacent thereto. A cover plate may be disposed above the substrate and has a layer of conductive material on a surface of the cover plate opposite the substrate. An optically active material, such as liquid crystal material, may be disposed between the substrate and the cover plate. An array of pixels are formed on the substrate. The pixel array includes an array of diffraction grating elements. Each element includes one or more diffraction gratings. The pitch of each diffraction grating can be a function of the angle of the incident light and the desired diffraction output spectrum. An optical system directs the diffracted light from each grating through the optically active material into viewing optics.
REFERENCES:
patent: 4256787 (1981-03-01), Shaver et al.
patent: 5013141 (1991-05-01), Sakata
patent: 5299289 (1994-03-01), Omae et al.
patent: 5742373 (1998-04-01), Alvelda
Massachusetts Institute of Technology
Ngo Julie
Sikes William L.
LandOfFree
Color microdisplays and methods of manufacturing same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color microdisplays and methods of manufacturing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color microdisplays and methods of manufacturing same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-320003