LED array for emitting light of multiple wavelengths

Details LED array for emitting light of multiple wavelengths LED array for emitting light of multiple wavelengths

1991-12-17

1993-02-16

Hille, Rolf

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

Incoherent light emitter structure

Plural light emitting devices

257 98, 257 99, 257918, 362800, 307311, H01L 3300

Patent

active

051873770

ABSTRACT:
An LED array comprising a substrate, a plurality of first LEDs, and a plurality of second LEDs, wherein the range of wavelengths of light from the first LEDs is different from the range of wavelengths of light from the second LEDs; the first LEDs and the second LEDs are respectively connected in series so that a current alternatively flows through the first LEDs and the second LEDs in the opposite directions; the first LEDs connected in series and the second LEDs connected in series are further connected in parallel; and the first LEDs and second LEDs are arranged in a line on the substrate.

REFERENCES:
patent: 3942065 (1976-03-01), Russ
patent: 4298869 (1981-11-01), Okuno
patent: 4329625 (1982-05-01), Nishizawa et al.
patent: 4755807 (1988-07-01), Guennou
patent: 4901207 (1990-02-01), Sato et al.
patent: 4939426 (1990-07-01), Menard et al.
patent: 4963798 (1990-10-01), McDermott
patent: 4965457 (1990-10-01), Wrobel et al.
patent: 5008788 (1991-04-01), Palinkas

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