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:
Dec. 18, 2018
Filed:
Oct. 05, 2017
Applicant:
Unity Opto Technology Co., Ltd., New Taipei, TW;
Inventors:
Assignee:
Unity Opto Technology Co., Ltd., New Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); H01L 33/48 (2010.01); H01L 33/56 (2010.01); B82Y 20/00 (2011.01);
U.S. Cl.
CPC ...
H01L 33/504 (2013.01); H01L 33/486 (2013.01); H01L 33/508 (2013.01); H01L 33/56 (2013.01); B82Y 20/00 (2013.01); H01L 2933/0083 (2013.01); Y10S 977/774 (2013.01); Y10S 977/818 (2013.01); Y10S 977/824 (2013.01); Y10S 977/825 (2013.01); Y10S 977/95 (2013.01);
Abstract
An LED lighting device is disclosed. The LED lighting device uses a violet LED chip as a light source for exciting quantum dots. The quantum dots excited by the light of the violet LED chip are mixed with each other to form white light. So, the LED lighting device not just has the effects of providing a high luminous efficiency and preventing the blue light from damaging human eyes only, but also provides a better color rendering ability.