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:
Sep. 24, 2013
Filed:
Jun. 25, 2010
Terry L. Smith, Roseville, MN (US);
Michael A. Haase, St. Paul, MN (US);
Thomas J. Miller, Woodbury, MN (US);
Xiaoguang Sun, Woodbury, MN (US);
Terry L. Smith, Roseville, MN (US);
Michael A. Haase, St. Paul, MN (US);
Thomas J. Miller, Woodbury, MN (US);
Xiaoguang Sun, Woodbury, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
Disclosed re-emitting semiconductor constructions (RSCs) may provide full-color RGB or white-light emitting devices that are free of cadmium. Some embodiments may include a potential well that comprises a III-V semiconductor and that converts light of a first photon energy to light of a smaller photon energy, and a window that comprises a II-VI semiconductor having a band gap energy greater than the first photon energy. Some embodiments may include a potential well that converts light having a first photon energy to light having a smaller photon energy and that comprises a II-VI semiconductor that is substantially Cd-free. Some embodiments may include a potential well that comprises a first III-V semiconductor and that converts light having a first photon energy to light having a smaller photon energy, and a window that comprises a second III-V semiconductor and that has a band gap energy greater than the first photon energy.