LED light source and lamp with sunlight visible light part spectrum structure

A LED light source and visible light technology, applied in the field of electronic information, can solve the problems of increased energy consumption, greenhouse effect, and large damage to human eyes, and achieve the effect of meeting human health requirements

Active Publication Date: 2018-01-09
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, through the analysis of the spectral components of the sun in natural light, we show that the relatively large content of sunlight is 480-560nm spectral components, while the lack of relatively large spectral components in current LED lighting sources is that the trough is 490nm and the wavelength range is 480nm. Cyan light at -530nm
In addition, because the energy of ultraviolet photons is higher, ultraviolet rays are more harmful to human eyes ...

Method used

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  • LED light source and lamp with sunlight visible light part spectrum structure
  • LED light source and lamp with sunlight visible light part spectrum structure
  • LED light source and lamp with sunlight visible light part spectrum structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Embodiment (1)——two-color technical scheme and its deficiency

[0038] The 3528 LED chip semi-finished product (peak emission wavelength is 455nm) produced by Guangzhou Jinko Electronics Co., Ltd. after solid crystal and wire bonding, and the Y produced by Guangdong Langda Fluorescent Materials Co., Ltd. 3 Al 5 o 15 :Ce (YAG:Ce) yellow phosphor, AB transparent silica gel produced by Jiangxi Lvtai Technology Co., Ltd. for white LED device packaging. After uniformly mixing and degassing YAG:Ce phosphor in transparent silica gel, use a dispenser to drop it onto the LED chip holder, and package a white LED device after vacuum baking, wherein YAG:Ce phosphor is in transparent silica gel The mass percentage is 13%. The HAAS2000 photoelectric test equipment produced by Hangzhou Yuanfang Optoelectronics Information Co., Ltd. was used to test the optical and electrical performance tests of LED devices. On May 26, 2017, the solar spectrum was collected at different times thro...

Embodiment ( 5

[0055] The LED encapsulation process used in this embodiment is the same as that in Embodiment (4), but an ultraviolet LED chip with an emission wavelength of 365 is used. The blue phosphor Sr3MgSi2O8:Eu(3128) used in this example was synthesized by the laboratory itself. The synthesis method is as described in the document Journal of Luminescence, 2016, 169,733, and other phosphors are the same as in the above examples. In this embodiment, a five-element color scheme is adopted to seal white LED devices, using 3128 blue phosphor + Ba505 cyan phosphor + green 5 color 57 phosphor + 315 orange phosphor + 1113 red phosphor, and the phosphor is in transparent silica gel The mass percentage of is 20%, and the mass ratio of phosphor is 3128:Ba505:557:315:1113=0.1836:0.4350:0.2010:0.1273:0.0531. The emission spectrum of the packaged white LED device is as follows Figure 14 As shown, its spectral configuration is basically consistent with the solar spectrum.

Embodiment ( 6

[0057] An LED lamp, which uses the LED device in the embodiment (three) or the embodiment (four).

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Abstract

The invention discloses an LED device and light source with a sunlight visible light part spectrum structure. The LED device comprises a blue LED chip or blue fluorescent powder, thereby mixing cyan,red, green and orange spectrum components into an emission spectrum of the LED device by using cyan fluorescent powder, green fluorescent powder, orange fluorescent powder and red fluorescent powder to obtain white light. Compared with the prior art, the LED light source has sunlight emission spectrum configuration, does not contain an ultraviolet or infrared spectrum component and is a healthy light source; the white LED device is packaged by adopting a four-primary color or five-primary color technical scheme, and different from a traditional three-primary color concept and a two-primary color technical scheme adopted for early LED packaging, the four-primary color or five-primary color technical scheme has the advantages that the condition that the most important cyan spectrum componentwith a wavelength range of 480-520nm in a solar spectrum needs to be added is emphasized; the environment-friendly, green and energy-saving requirements are met; and the human health requirements arealso met.

Description

technical field [0001] The invention belongs to the field of electronic information, specifically semiconductor optoelectronic devices, green lighting and information display, and particularly relates to a packaging method for a white LED device with a configuration for emitting sunlight in the visible light range and a healthy light source made using the device. Background technique [0002] White light LED is known as the fourth generation of green semiconductor lighting source after incandescent lamps, fluorescent lamps and high-pressure gas discharge lamps. It is friendly to the environment (no mercury pollution), and has the advantages of small size and shock resistance. Therefore, once the LED came out, it has been popularized and applied rapidly, and the penetration rate in the field of display backlight has reached 100%. Although semiconductor lighting has the obvious advantages of energy saving and environmental protection, how to endow LED green lighting with heal...

Claims

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Application Information

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IPC IPC(8): H01L33/50H01L25/075
Inventor 陈雷费米陈杰何良锐田云飞刘衍芳张强
Owner HEFEI UNIV OF TECH
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