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. 15, 2015
Filed:
Dec. 31, 2014
High Power Opto. Inc., Taichung, TW;
Fu-Bang Chen, Taichung, TW;
Yen-Chin Wang, Taichung, TW;
Wei-Yu Yen, Taichung, TW;
Shih-Hsien Huang, Taichung, TW;
Chih-Sung Chang, Taichung, TW;
HIGH POWER OPTO, INC., Taichung, TW;
Abstract
An electroluminescent and photoluminescent white light emitting diode (LED) includes an electroluminescent light emitting structure, a first photoluminescent light emitting layer, a second photoluminescent light emitting layer and a red light emitting layer. The electroluminescent light emitting structure emits a violet light having a wavelength between 395 nm and 450 nm and an FWHM smaller than 25 nm. The first photoluminescent light emitting layer and the second photoluminescent light emitting layer are sequentially disposed on the electroluminescent light emitting structure. The first photoluminescent light emitting layer absorbs the violet light to generate a blue light. The second photoluminescent light emitting layer absorbs the violet light and the blue light to generate a green light. The red light emitting layer generates a red light. Accordingly, the violet light, the blue light, the green light and the red light are blended to form a white light having a high color rendering index.