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:
Sep. 12, 2023
Filed:
Oct. 23, 2018
Foshan Nationstar Optoelectronics Co., Ltd, Guangdong, CN;
Haijun Wang, Guangdong, CN;
Yangcheng Huang, Guangdong, CN;
Xiang Chen, Guangdong, CN;
Fabo Liu, Guangdong, CN;
Zhonghai Yan, Guangdong, CN;
Danlei Gong, Guangdong, CN;
Junhua Chen, Guangdong, CN;
Yushan Lin, Guangdong, CN;
Jian Gan, Guangdong, CN;
Haixing Tan, Guangdong, CN;
FOSHAN NATIONSTAR OPTOELECTRONICS CO., LTD, Foshan, CN;
Abstract
The disclosure provides an LED white light device, including a blue light chip and phosphors. The blue light chip has a band of (455-470) nm. The phosphors include a dual-band yellow phosphor and a red phosphor having an excited light peak wavelength range of (610-660) nm. The yellow phosphor and the red phosphor are mixed according to a proportion of 1:(0.03-0.2) and cover the blue light chip, such that blue light emitted by the packaged LED white light device has a peak wavelength range of (450-465) nm. The disclosure also provides a preparation method of an LED white light device and an LED backlight module adopting the above LED white light device. The disclosure achieves the effects of blue light prevention, high color gamut and pure white simultaneously, Color uniformity and consistency are good, and a blue-green-red three-color continuous spectrum is provided, which is closer to a solar spectrum.