Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1997-02-06
1999-03-16
Yamnitzky, Marie
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428328, 428331, 428690, 428691, 428917, 313485, 313486, 313495, 313502, 313503, 313467, 313469, 257102, 257103, 438 34, 438 46, 438 63, 438 73, 427 64, 427 71, H05B 3300, B05D 506, B32B 516
Patent
active
058827790
ABSTRACT:
A class of high efficiency (e.g., .gtoreq.20%) materials for use as display pixels to replace conventional phosphors in television, monitor, and flat panel displays. The materials are comprised of nanocrystals such as CdS.sub.x Se.sub.1-x, CuCl, GaN, CdTe.sub.x S.sub.1-x, ZnTe, ZnSe, ZnS, or porous Si or Ge alloys which may or may not contain a luminescent center. The nanocrystals may be doped with a luminescent center such as Mn.sup.2+ or a transition metal. The nanocrystals have passivated surfaces to provide high quantum efficiency. The nanocrystals have all dimensions comparable to the exciton radius (e.g., a size in the range of approximately 1 nm to approximately 10 nm). A quantum dot nanocrystal display phosphor that has a size selected for shifting an emission wavelength of a constituent semiconductor material from a characteristic wavelength observed in the bulk to a different wavelength. A field effect flat panel display is described that employs the nanocrystals of this invention, as are embodiments of plasma displays and fluorescent light sources.
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Spectra Science Corporation
Yamnitzky Marie
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