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LED packaging light source free from damage to visual system and manufacturing method thereof

A technology of LED packaging and visual system, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., to achieve the effect of preventing blue light from harming the human visual system

Inactive Publication Date: 2014-09-17
JIANGMEN LT LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the blue light in the emitted light of the LED cannot be completely avoided, because the blue chip is an important part of the white LED.

Method used

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  • LED packaging light source free from damage to visual system and manufacturing method thereof
  • LED packaging light source free from damage to visual system and manufacturing method thereof
  • LED packaging light source free from damage to visual system and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0038] Specific example 1, the red phosphor uses DAM, accounting for 20% of the yellow phosphor; the green phosphor uses TMG (silicate system), and non-sulfide green phosphor (GP) may also achieve better experimental results The green fluorescent powder LuAG can also achieve the experimental effect, and the dosage is 2.67 times that of the yellow fluorescent powder; the yellow fluorescent powder uses DAY, and the LED chip uses a blue chip. The ratio of glue A to glue B is 1:1. The spectrum test results of the obtained COB packaged light source are as follows: image 3 . In addition, the color rendering index of the packaged light source is 85.0, and the color temperature is about 4122K. The spectral power distribution from the test image 3 And compared with ordinary LED energy distribution figure 1 It can be seen that the blue light intensity of the packaged light source is very low, the spectrum is similar to the solar spectrum, and the color rendering is good. Applying ...

specific Embodiment 2

[0039] Specific embodiment 2, the red phosphor is DAM, which accounts for 20% of the yellow phosphor; the green phosphor is TMG, and the amount is 3.33 times that of the yellow phosphor; the yellow phosphor is DAY, and the LED chip is blue. The ratio of glue A to glue B is 1:1. The spectrum test results of the obtained COB packaged light source are as follows: Figure 4 . In addition, the color rendering index of the packaged light source is 83.2, and the color temperature is about 4542K. The spectral power distribution from the test Figure 4 And compared with ordinary LED spectral energy distribution figure 1 It can be seen that the blue light intensity of the packaged light source is low, the spectrum is solar-like, and the color rendering is good. Applying the packaged light source to lamps will be very effective in preventing blue light hazards.

specific Embodiment 3

[0040]In specific embodiment 3, the red phosphor is DAM, which accounts for 20% of the yellow phosphor; the green phosphor is TMG, and the amount is 2.67 times that of the yellow phosphor; the yellow phosphor is YAG, and the LED chip is blue. The ratio of glue A to glue B is 1:1. The obtained spectral test results of the COB packaged light source are as follows: Figure 5 . In addition, the color rendering index of the packaged light source is 83.0, and the color temperature is 4453K. The spectral power distribution from the test Figure 5 And compared with ordinary LED spectral energy distribution figure 1 It can be seen that the blue light intensity of the packaged light source is low, the spectrum is solar-like, and the color rendering is good. Applying the packaged light source to a lamp will be very effective in preventing blue light hazards.

[0041] It can be seen from the results of the above implementation examples that it is feasible to use the raw materials and ...

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Abstract

The invention discloses an LED packaging light source free from damage to a visual system and a manufacturing method of the LED packaging light source. LED fluorescent glue used for packaging is mainly formed by mixing silica gel, green phosphor, red phosphor and yellow phosphor. The green phosphor, the red phosphor and the yellow phosphor account for 20%-60% of the total amount of silica gel in total according to the weight ratio, the weight ratio of the yellow phosphor to the green phosphor to the red phosphor is 1:0.20-1.0:0.01-0.16, and the emitting peak wavelength of the green phosphor ranges from 510 nm to 550 nm. Due to the adoption of the LED fluorescent glue formed by mixing special phosphor, an emitted spectrum of the manufactured LED packaging light source is similar to the solar spectrum, and the light source can be conveniently applied to various lamps, meets indoor lighting requirements, and can effectively prevent blue light from damaging the visual system of a person.

Description

technical field [0001] The invention relates to an LED packaged light source and a manufacturing method thereof, in particular to an LED packaged light source without visual system damage and a manufacturing method thereof. Background technique [0002] Because LED light sources have many advantages such as energy saving, environmental protection, and adjustable light color, the technology of LED lighting sources has also developed rapidly. As the light efficiency of LED has been greatly improved and the brightness is getting higher and higher, the problem that the blue light in the emitted light will affect the human visual system and other aspects has gradually become known to the public. [0003] At present, the intensity of blue light in the emitted light of LED packaged light source is relatively high, especially the LED light source with higher color temperature has higher intensity of blue light, which will instantly cause irreversible damage to the human visual syste...

Claims

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Application Information

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IPC IPC(8): H01L33/50
CPCH01L33/504H01L2933/0041
Inventor 黄承斌王忆彭渤
Owner JIANGMEN LT LIGHTING
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