Multiwavelength LED devices and methods of fabrication

Details Multiwavelength LED devices and methods of fabrication Multiwavelength LED devices and methods of fabrication

1994-12-12

1997-04-29

Monin, Jr., Donald L.

Active solid-state devices (e.g., transistors, solid-state diode

Incoherent light emitter structure

Plural light emitting devices

257 90, 257 97, 257 99, H01L 3300

Patent

active

056252013

ABSTRACT:
A multiwavelength LED device including a first LED constructed to emit light of a first wavelength and a second LED constructed to emit light of a second wavelength, different than the first wavelength. The first and second LEDs are stacked vertically on a substrate and positioned to both emit light in the same direction. One of the LEDs is transparent to light emitted by the other of the LEDs so that light from both LEDs is emitted through a single aperture and can be mixed in intensity to produce a variety of wavelengths. The LEDs are individually addressable.

REFERENCES:
patent: 4577207 (1986-03-01), Copeland
patent: 4987097 (1991-01-01), Nitta et al.
patent: 5075743 (1991-12-01), Behfar-Rad
patent: 5235194 (1993-08-01), Izumiya et al.
patent: 5467215 (1995-11-01), Lebby et al.
patent: 5483085 (1996-01-01), Holm et al.

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