Light- emitting device

US7939834B2 · kind B2 · utility

Assignee

• Chi Mei Lighting Technology Corp. · TW

Inventors

• Shi-Ming Chen · Danei, TW
• Chang-Hsin Chu · Tainan, TW

Key dates

• Filing date: May 23, 2008
• Grant date: May 10, 2011
• Expiry date: Apr 4, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/819

Abstract

A light-emitting device includes a substrate having an epitaxial-forming surface and a back surface opposite to the epitaxial-forming surface, the substrate being formed with a recess indented from the back surface, the back surface having a recessed portion that defines the recess, and a planar portion extending outwardly from the recessed portion; an epitaxy layer; a continuous heat-dissipating layer formed on the planar portion and the recessed portion of the back surface of the substrate; and first and second electrodes coupled electrically to the epitaxy layer.