Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1974-11-11
1976-03-02
Demeo, Palmer C.
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
357 17, H05B 3326
Patent
active
039420655
ABSTRACT:
There is disclosed a multicolor monolithic light display comprising a pair of matrices of light emitting diodes in an integral structure which pair of matrices are alternately or simultaneously scannable to produce a red, green or orange display. One matrix includes a plurality of gallium arsenide phosphide (GaAs.sub.X P.sub.1.sub.-X) red light emitting diodes while the other matrix includes gallium phosphide green light emitting diodes. The light emitting diodes are arranged in a geometric pattern of columns and rows with the first matrix interposed with the second matrix so that an alphanumeric character produced by one matrix will appear at almost the same physical location as a character of the alternate color. Row and column address lines are provided for each matrix so that a strobing format logic address system can affect lighting of the individual diodes for producing an alphanumeric character or graphic display in either one color or the other or if both matrices are addressed simultaneously in a combined color. There are also disclosed alternate methods of manufacturing the foregoing multicolor display.
REFERENCES:
patent: 3290539 (1966-12-01), Lamorte
patent: 3517258 (1970-06-01), Lynch
patent: 3536830 (1970-10-01), Hakki
patent: 3558974 (1971-01-01), Stewart
patent: 3611069 (1971-10-01), Galginaitis et al.
patent: 3636397 (1972-01-01), Addamiano et al.
patent: 3641390 (1972-02-01), Nakamura
patent: 3703656 (1972-11-01), Barnett et al.
patent: 3737704 (1973-06-01), Grenon et al.
"Lighting Up in a Group," by L. A. Murray et al., Electronics, Mar. 4, 1968, pp. 104-110.
DeMeo Palmer C.
Motorola Inc.
Olsen Henry T.
Weiss Harry M.
LandOfFree
Monolithic, milticolor, light emitting diode display device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Monolithic, milticolor, light emitting diode display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monolithic, milticolor, light emitting diode display device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1280504