Title:
LED WHITE LIGHT DEVICE AND PREPARATION METHOD THEREFOR, AND LED BACKLIGHT MODULE
Document Type and Number:
WIPO Patent Application WO/2020/034391
Kind Code:
A1
Abstract:
Provided are an LED white light device and a preparation method therefor, and an LED backlight module using the LED white light device. The LED white light device comprises a blue light chip (2) and a phosphor (3), wherein a waveband of the blue light chip (2) is (455-470) nm; the phosphor (3) comprises a dual-waveband yellow phosphor and a red phosphor with an excited light peak wavelength range of (610-660) nm; and the yellow phosphor and the red phosphor are mixed in a ratio of 1:(0.03-0.2), and cover the blue light chip (2), so that the encapsulated LED white light device emits blue light with a peak wavelength range of (450-465) nm. The LED white light device can realize the effects of anti-blue light, high color gamut and pure white at the same time, and has good color uniformity and consistency and has a continuous spectrum with three colors of blue, green and red, which is closer to the solar spectrum.
Inventors:
WANG HAIJUN (CN)
HUANG YANGCHENG (CN)
CHEN XIANG (CN)
LIU FABO (CN)
YAN ZHONGHAI (CN)
GONG DANLEI (CN)
CHEN JUNHUA (CN)
LIN YUSHAN (CN)
GAN JIAN (CN)
TAN HAIXING (CN)
HUANG YANGCHENG (CN)
CHEN XIANG (CN)
LIU FABO (CN)
YAN ZHONGHAI (CN)
GONG DANLEI (CN)
CHEN JUNHUA (CN)
LIN YUSHAN (CN)
GAN JIAN (CN)
TAN HAIXING (CN)
Application Number:
PCT/CN2018/111518
Publication Date:
February 20, 2020
Filing Date:
October 23, 2018
Export Citation:
Assignee:
FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD (CN)
International Classes:
H01L33/50
Foreign References:
| CN102916113A | 2013-02-06 | |||
| CN108075031A | 2018-05-25 | |||
| CN105621886A | 2016-06-01 | |||
| US20150184813A1 | 2015-07-02 | |||
| US20180040775A1 | 2018-02-08 |
Attorney, Agent or Firm:
SCIHEAD PATENT AGENT CO.,LTD (CN)
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