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:
Jul. 12, 2016
Filed:
Dec. 16, 2010
Zhimin Jamie Yao, Santa Barbara, CA (US);
Zhimin Jamie Yao, Santa Barbara, CA (US);
CREE, INC., Durham, NC (US);
Abstract
LED chips and packages are disclosed having lenses made of materials that resist degradation at higher operation temperatures and humidity, and methods of fabricating the same. The lenses can be made of certain materials that can withstand high temperatures and high humidity, with the lenses mounted to the LED prior to certain critical metallization steps. This helps avoid damage to the metalized part that might occur as a result of the high mounting or bonding temperature for the lens. One embodiment of an LED chip comprises a flip-chip LED and a lens mounted to the topmost surface of the flip-chip LED. Lenses can be bonded to LEDs at the wafer level or at the chip level. The lens comprises a non-polymer material and the LED chip is characterized as having substantially no polymer materials in contact with the LED chip.