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. 23, 2015
Filed:
Jan. 07, 2014
Lextar Electronics Corporation, Hsinchu, TW;
Li-Cheng Yang, Zhongli, TW;
Yu-Chun Lee, Zhubei, TW;
LEXTAR ELECTRONICS CORPORATION, Hsinchu, TW;
Abstract
A LED package structure includes a base portion, a light-emitting chip, a cup portion and an encapsulating glue. The base portion has an upper surface and a lower surface. The upper surface has a die-bonding area. The light-emitting chip emits a light with a first wavelength and is located on the die-bonding area. The cup portion is located on the base portion to surround the die-bonding area to form a recess having an opening. The encapsulating glue is filled into the recess. The encapsulating glue has a wavelength conversion material configured to convert part of the light with the first wavelength into a light with a second wavelength. The cup portion includes an electro chromic layer electrically connected to a first external power and a transmittance of the electro chromic layer is changed in accordance with an input voltage of the first external power to adjust the light-emitting profile of the light-emitting chip.