Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With housing or contact structure
Reexamination Certificate
2007-03-06
2007-03-06
Prenty, Mark V. (Department: 2822)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With housing or contact structure
C257S100000
Reexamination Certificate
active
11167327
ABSTRACT:
A semiconductor light emitting device is provided which comprises a metallic support plate1; a semiconductor light emitting diode chip2mounted on a support surface13adefined on an upper surface13of support plate1; wiring conductors4mounted on side and upper surfaces12, 13of support plate1via insulators6; and a plastic encapsulant3for sealing side and upper surfaces12and13of support plate1and a part of wiring conductors4. As support plate1comprises at least one projection16extending from side surface12of support plate1through a notch3aformed in plastic encapsulant3for outward exposure, heat from diode chip2can be efficiently diffused to the outside through projections16of support plate1extending through notch3aof plastic encapsulant3for outward exposure, when heavy current flows through diode chip2through wiring conductors4for stronger lighting. Also, the device can selectively be mounted on a circuit board in either of the horizontal and vertical mounting structures by selectively disposing bottom surface14or projections16of support plate1in face of a mounting surface of circuit board and connecting lead terminal4dof wiring conductor4to circuit board to direct light from diode chip2perpendicularly or parallel to circuit board.
REFERENCES:
patent: 2005/0236638 (2005-10-01), Tsukagoshi
patent: 2004-296882 (2004-10-01), None
Bachman & LaPointe P.C.
Prenty Mark V.
Sanken Electric Co. Ltd.
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