White light LED light source and lighting device

A LED light source and white light technology, applied in electrical components, electric solid devices, circuits, etc., can solve the problems of large damage to human eyes, need to further improve the color gamut, and high proportion of blue light, so as to achieve less damage to human eyes and protect eyesight , Improve the effect of color gamut

Inactive Publication Date: 2021-10-08
XUYU OPTOELECTRONICSSHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a white light LED light source and a lighting device, aiming to solve the problem that blue light accounts for a large proportion in the existing white light LED light source to a certain extent, which is harmful to human eyes, and the color gamut needs to be further improved.

Method used

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  • White light LED light source and lighting device

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Experimental program
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Effect test

Embodiment 1

[0043] A kind of white light LED backlight source, its specific white light realization method is as follows:

[0044] The 402.5-405nm band chip and the 470-472.5nm chip are connected in series. Under the same current drive, the voltage drop difference is about 0.2%, and the radiation power ratio is about 1.5:1. The phosphor solution is: green powder is β-SiAlON:Eu 2+ , the peak wavelength is 530nm; the red powder is BaMgAl 11 o 17 :Cr 3+ , with a peak wavelength of 700nm.

Embodiment 2

[0046] A kind of white light LED backlight source, its specific white light realization method is as follows:

[0047] The 402.5-405nm band chip and the 470-472.5nm chip are connected in series. Under the same current drive, the voltage drop difference is about 0.2%, and the radiation power ratio is about 1.5:1. The phosphor solution is: green powder is Sr 2 SiO 4 : Eu 2+ , the peak wavelength is 530nm; the red powder is BaMgAl 11 o 17 :Cr 3+ , with a peak wavelength of 700nm.

Embodiment 3

[0049] A kind of white light LED backlight source, its specific white light realization method is as follows:

[0050] The 402.5-405nm band chip and the 470-472.5nm chip are connected in series. Under the same current drive, the voltage drop difference is about 0.2%, and the radiation power ratio is about 1.5:1. The phosphor solution is: green powder is Sr 2 SiO 4 : Eu 2+ , the peak wavelength is 530nm; the red powder is SrMgAl 11 o 17 :Cr 3+ , with a peak wavelength of 700nm.

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Abstract

The invention belongs to the technical field of display, and particularly relates to a white light LED light source and a lighting device. The white light LED light source comprises a blue light chip and fluorescent powder excited by the blue light chip; the blue light chip comprises a first chip with the peak wavelength of 400-410 nm and a second chip with the peak wavelength of 470-480 nm, and the fluorescent powder comprises green fluorescent powder with the peak wavelength of 520-540 nm and red fluorescent powder with the peak wavelength of 690-700 nm. According to the white light LED light source, through the synergistic excitation effect of the first blue light chip, the second blue light chip, the green fluorescent powder and the red fluorescent powder, the LED light source achieves ultrahigh-color-gamut white light which can reach 111%, the high-energy blue light is small in proportion, the blue light harm is low, and the harm of the light source to human eyes is reduced.

Description

technical field [0001] The present application belongs to the field of display technology, and in particular relates to a white LED light source and an illuminating device. Background technique [0002] In recent years, with the increasing penetration rate of the LED lighting market, the country's target requirements for LED lighting in terms of energy saving and emission reduction have basically been met. However, the widespread controversy over the harm of blue light and the disorder of the rhythm effect has attracted much attention to the concept of LED healthy lighting and display. According to the latest research report of the World Health Organization, the number of myopia patients in primary and middle schools in my country exceeds 100 million, and the myopia rate among teenagers ranks first in the world. Myopia in children and adolescents has become the main cause of visual impairment in China. Poor lighting or display environment is one of the main direct causes o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L25/075
CPCH01L33/504H01L25/075
Inventor 陈磊李超林金填黎学文蔡济隆田琪
Owner XUYU OPTOELECTRONICSSHENZHEN CO LTD
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