Bridgelux Incorporated

Avago Technologies Ecbu IP (singapore) Pte. Ltd.

Toshiba Techno Center Inc.

Agilent Technologies, Inc.

Lumileds Lighting U.s., LLC

Kabushiki Kaisha Toshiba

Hewlett-packard Company

Other

Taiwan Semiconductor Manufacturing Comp. Ltd.

Toshiba Corporation

Manutius Ip, Inc.

Manulius Ip, Inc.

Lulileds Lighting, U.S. LLC

Steven D Lester

Frank T Shum

William W So

Ghulam Hasnain

Jeffrey N Miller

Virginia Robbins

Syn-Yem Hu

Chao-Kun Lin

Jeff Ramer

Ling Zhang

David P Bour

Chih-Wei Chuang

Jun Wu

Scott W Corzine

Daniel Alexander Steigerwald

Qingwei Mo

Fred A Kish, Jr

Daniel Bernardo Roitman

Paul Scott Martin

Homer Antoniadis

Jonathan J Wierer, Jr

David S Hum

Serge Laurent Rudaz

Danny E Mars

William R Imler

Steven A Maranowski

Robert M Fletcher

Jeffrey C Ramer

Kyle J Thomas

Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.

LEDs with efficient electrode structures

A light source and method for making the same are disclosed. The light source includes a plurality of Segmented LEDs connected in parallel to a power bus and a controller. The power bus accepts a variable number of Segmented LEDs. The controller receives AC power and provides a power signal on the power bus. Each Segmented LED is characterized by a driving voltage that is greater than 3 times the driving voltage of a conventional LED fabricated in the same material system as the Segmented LED. The number of Segmented LEDs in the light source is chosen to compensate for variations in the light output of individual Segmented LEDs introduced by the manufacturing process. In another aspect of the invention, the number of Segmented LEDs connected to the power bus can be altered after the light source is assembled.

Light sources utilizing segmented LEDs to compensate for manufacturing variations in the light output of individual segmented LEDs

A light source and method for making the same are disclosed. The light source includes a conducting substrate, and a light emitting structure that is divided into segments. The light emitting structure includes a first layer of semiconductor material of a first conductivity type deposited on the substrate, an active layer overlying the first layer, and a second layer of semiconductor material of an opposite conductivity type from the first conductivity type overlying the active layer. A barrier divides the light emitting structure into first and second segments that are electrically isolated from one another. A serial connection electrode connects the first layer in the first segment to the second layer in the second segment. A power contact is electrically connected to the second layer in the first segment, and a second power contact electrically connected to the first layer in the second segment.

Series connected segmented LED

A light-emitting device includes first and second semiconductor layers and a light-emitting layer between the first and second semiconductor layers. The light-emitting device also includes an improved electrode structures.

Light-emitting device with improved electrode structures

Growing community of inventors

Palo Alto, CA, United States of America

Steven D Lester