Semiconductor light-emitting device

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...

Reexamination Certificate

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C257S079000, C257SE33004, C257SE33004

Reexamination Certificate

active

07728340

ABSTRACT:
A light-emitting diode has: a substrate; a light-emitting layer having a first conductivity type cladding layer, an active layer, and a second conductivity type cladding layer stacked sequentially on a front side of the substrate; a first current-blocking portion partially formed in the middle on the light-emitting layer; a current-conducting portion formed on the second conductivity type cladding layer and the first current-blocking portion; a lower electrode formed on the back side of the substrate, a light-reflecting layer formed between the substrate and the light-emitting layer; a partial electrode formed on the surface of the light-reflecting layer and in a portion positioned below the first current-blocking portion; and a second current-blocking portion formed over the surface of the light-reflecting layer excluding the portion in which is formed the partial electrode.

REFERENCES:
patent: 5696389 (1997-12-01), Ishikawa et al.
patent: 6794688 (2004-09-01), Nakatsu et al.
patent: 7145180 (2006-12-01), Shinohara et al.
patent: 7180094 (2007-02-01), Seong et al.
patent: 7285436 (2007-10-01), Nakatsu et al.
patent: 2001/0011730 (2001-08-01), Saeki
patent: 2005/0205886 (2005-09-01), Murofushi et al.
patent: 2005/0236632 (2005-10-01), Lai et al.
patent: 2009/0072257 (2009-03-01), Unno et al.
patent: 2001-144322 (2001-05-01), None

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