High power, high luminous flux light emitting diode and method of making same

US6650018B1 · kind B1 · utility

Assignee

• AXT, INC. · US

Inventors

• Yongsheng Zhao · Nanhu, CN
• William W. So · Sunnyvale, US
• Kevin Ma · Milpitas, US
• Chyi Shyuan Chern · Arcadia, US
• Heng Liu · Sunnyvale, US
• Eugene Ruddy · Claremont, US

Key dates

• Filing date: May 24, 2002
• Grant date: Nov 18, 2003
• Expiry date: May 24, 2022

Classification

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

Abstract

A high power, high luminous flux light emitting diode (LED) comprises a substrate, a light-emitting structure, a first electrode and a second electrode. The LED has a top surface layout design in which the first electrode has a number of legs extending in one direction, and the second electrode has a number of legs extending in the opposite direction. At least portions of the legs of the first electrode are interspersed with and spaced apart from portions of the legs of the second electrode. This provides a configuration that enhances current spreading along the length of the legs of both electrodes.