The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2004
Filed:
Jun. 26, 2003
Applicant:
Inventors:
Assignee:
Vtera Technology Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/922 ; H01L 2/9221 ; H01L 2/924 ;
U.S. Cl.
CPC ...
H01L 2/922 ; H01L 2/9221 ; H01L 2/924 ;
Abstract
The present invention discloses a light emitting diode (LED) by using a P-type ZnTe layer or a ZnSe layer as a substrate. To match the lattice between the substrate and blue light LED of cubic crystal, a BP(boron phosphide) buffer layer of single crystal is formed on the substrate. When the blue light LED emits blue light of wavelength from 450 nm to 470 nm, the ZnTe or ZnSe substrate absorbs the blue light and emits yellow-green light of wavelength 550 nm. Thus, white light is produced by mixing the blue light and the yellow-green light.