Invention Grant
US07939839B2 Series connected segmented LED 有权
串联连接分段LED

  • Patent Title: Series connected segmented LED
  • Patent Title (中): 串联连接分段LED
  • Application No.: US12208502
    Application Date: 2008-09-11
  • Publication No.: US07939839B2
    Publication Date: 2011-05-10
  • Inventor: Ghulam Hasnain
  • Applicant: Ghulam Hasnain
  • Applicant Address: US CA Livermore
  • Assignee: Bridgelux, Inc.
  • Current Assignee: Bridgelux, Inc.
  • Current Assignee Address: US CA Livermore
  • Agent Calvin B. Ward
  • Main IPC: H01L33/00
  • IPC: H01L33/00
Series connected segmented LED
Abstract:
A light source and method for making the same are disclosed. The light source includes a 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.
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