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. 08, 2011
Filed:
Feb. 04, 2010
Moungi G. Bawendi, Boston, MA (US);
Jason Heine, Cambridge, MA (US);
Klavs F. Jensen, Lexington, MA (US);
Jeffrey N. Miller, Los Altos Hills, CA (US);
Ronald L. Moon, Atherton, CA (US);
Moungi G. Bawendi, Boston, MA (US);
Jason Heine, Cambridge, MA (US);
Klavs F. Jensen, Lexington, MA (US);
Jeffrey N. Miller, Los Altos Hills, CA (US);
Ronald L. Moon, Atherton, CA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Philips Lumileds Lighting Company LLC, San Jose, CA (US);
Abstract
A light-emitting device comprising a population of quantum dots (QDs) embedded in a host matrix and a primary light source which causes the QDs to emit secondary light and a method of making such a device. The size distribution of the QDs is chosen to allow light of a particular color to be emitted therefrom. The light emitted from the device may be of either a pure (monochromatic) color, or a mixed (polychromatic) color, and may consist solely of light emitted from the QDs themselves, or of a mixture of light emitted from the QDs and light emitted from the primary source. The QDs desirably are composed of an undoped semiconductor such as CdSe, and may optionally be overcoated to increase photoluminescence.