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:
Jun. 07, 2005
Filed:
May. 29, 2002
Selective placement of quantum wells in flipchip light emitting diodes for improved light extraction
Yu-chen Shen, San Jose, CA (US);
Michael R. Krames, Mountain View, CA (US);
Michael J. Ludowise, San Jose, CA (US);
Yu-Chen Shen, San Jose, CA (US);
Michael R. Krames, Mountain View, CA (US);
Michael J. Ludowise, San Jose, CA (US);
Lumileds Lighting U.S., LLC, San Jose, CA (US);
Abstract
In accordance with embodiments of the invention, a light emitting device includes a light emitting region and a reflective contact separated from the light emitting region by one or more layers. In a first embodiment, the separation between the light emitting region and the reflective contact is between about 0.5λand about 0.9λ, where λis the wavelength of radiation emitted from the light emitting region in an area of the device separating the light emitting region and the reflective contact. In a second embodiment, the separation between the light emitting region and the reflective contact is between about λand about 1.4λ. The light emitting region may be, for example, III-nitride, III-phosphide, or any other suitable material.
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