Multicolor light emitting device

Details Multicolor light emitting device Multicolor light emitting device

1997-07-10

1998-11-24

Saadat, Mahshid D.

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

Responsive to non-electrical signal

Electromagnetic or particle radiation

257 88, 257 81, 257 89, 257 95, 257 99, 257100, H01L 2714, H01L 3100, H01L 3300, H01L 2715

Patent

active

058411771

ABSTRACT:
A semiconductor light emitting device includes at least two semiconductor light emitting elements which emit different colors of light to each other. The device further includes a lead frame for supporting the light emitting elements and a resin molding for sealing these elements. The external form of this resin molding is an ellipsoid or a part of an ellipsoid in which the curvature in the perpendicular direction to the element row is designed to be smaller than that in the parallel direction to the row. As a result, the device has a widely spread mixed color range especially in the perpendicular direction to the element row and high luminous intensity especially in the parallel direction to the element row. So, a multicolor light emitting device having a high ability of color mixture as well as high luminous intensity can be obtained.

REFERENCES:
patent: 5266817 (1993-11-01), Lin

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