Invention Grant
- Patent Title: Electrode structures for LEDs with increased active area
- Patent Title (中): 具有增加的有效面积的LED的电极结构
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Application No.: US12772767Application Date: 2010-05-03
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Publication No.: US08080879B2Publication Date: 2011-12-20
- Inventor: Frank T. Shum
- Applicant: Frank T. Shum
- Applicant Address: US CA Livermore
- Assignee: Bridgelux, Inc.
- Current Assignee: Bridgelux, Inc.
- Current Assignee Address: US CA Livermore
- Agent Michael S. Garrabrants
- Main IPC: H01L33/00
- IPC: H01L33/00

Abstract:
An electrode structure is disclosed for enhancing the brightness and/or efficiency of an LED. The electrode structure can have a metal electrode and an optically transmissive thick dielectric material formed intermediate the electrode and a light emitting semiconductor material. The electrode and the thick dielectric cooperate to reflect light from the semiconductor material back into the semiconductor so as to enhance the likelihood of the light ultimately being transmitted from the semiconductor material. Such LED can have enhanced utility and can be suitable for uses such as general illumination. The semiconductor material can have a cutout formed therein and a portion of the electrode can be formed outside of the cutout and a portion of the electrode can be formed inside of the cutout. The portion of the electrode outside the cutout can be electrically isolated from the semiconductor material by the dielectric material.
Public/Granted literature
- US20100213495A1 ELECTRODE STRUCTURES FOR LEDS WITH INCREASED ACTIVE AREA Public/Granted day:2010-08-26
Information query
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