Active blue light leakage preventing LED structures

An LED structure and active technology, applied in electrical components, electrical solid devices, circuits, etc., can solve the problems of decreased absorption of fluorescent materials, eye damage, blue light leakage, etc., and achieves the effect of low implementation cost

Active Publication Date: 2017-09-15
NAT CENT UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in actual use, when the white light LED is about to reach L70, the efficiency will drop due to heat generation, and such a drop in efficiency will cause more heat generation, which will lead to a decrease in the absorption of the fluorescent material used in the white light LED, resulting in A lot of blue light leaks out
[0004] On the other hand, due to the large increase in the use of LEDs, more and more research materials have revealed the powerful destructive power of blue light on the structure of the human eye. If people are exposed to blue light for a long time, it may even May cause irreparable damage to eyes

Method used

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  • Active blue light leakage preventing LED structures
  • Active blue light leakage preventing LED structures
  • Active blue light leakage preventing LED structures

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Embodiment Construction

[0035] Please refer to as figure 1 As shown, an LED structure 100 for actively suppressing blue light overflow and leakage according to an embodiment includes: a circuit substrate 10; at least one blue light die 20; a photodetector 30; and a wavelength conversion layer 40.

[0036] Such as figure 1 As shown, the circuit substrate 10 of the LED structure 100 that actively suppresses blue light overflow and leakage can be formed of a general FRP, ceramic, or flexible circuit board, and the circuit substrate 10 has an upper surface 11.

[0037] Such as figure 1 As shown, at least one blue light die 20 is fixed on the upper surface 11 of the circuit substrate 10 and is electrically connected to the circuit substrate 10. The blue dies 20 are LED dies that emit blue light, and the number of blue dies 20 used can be determined according to brightness, etc. and or requirements.

[0038] Same as figure 1 As shown, the photodetector 30 is also fixed on the upper surface 11 of the circuit subst...

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PUM

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Abstract

The present invention discloses active blue light leakage preventing LED structures. Each of the structure includes a circuit board, at least one blue light LED die, a photo detector and a wavelength transformation layer, wherein the electric circuit on the circuit board receives detection signal from the photo detector and turns off the said blue light LED die accordingly. With the implementation of the present invention, the active blue light leakage preventing LED structure turns off the blue light LED die when it reaches its usage life span limit thus avoiding damage to human from the massive release of blue light.

Description

Technical field [0001] The present invention relates to an LED structure, in particular to an LED structure with a light detector that actively suppresses blue light overflow. Background technique [0002] With the modernization of life, the destruction of the earth by mankind is becoming more and more serious. For the purpose of environmental protection and sustainable survival of the earth, the use of energy-saving light sources has begun to spread in large quantities. Among them, LEDs, which require very low electric energy and can provide sufficient brightness, are growing fastest. [0003] The lifespan of the LEDs used today is standardized to the time when the lumen value of the light emitted by the LED drops to 70% of the thermal stability value, which means that the LED is already unusable (known as L70 in the industry). However, in actual use, when the white light LED is about to reach L70, it will cause a drop in efficiency due to heat. Such a drop in efficiency will cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/50
CPCH01L33/48H01L33/50H01L2933/0033H01L2933/0041H01L25/167H01L31/173H01L33/502H05B45/58H01L22/20H01L22/30
Inventor 孙庆成杨宗勋
Owner NAT CENT UNIV
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