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White LED packaging method capable of making people feel comfortable

A packaging method and white light technology, which is applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of reducing immunity and narrowing the beam of white light LEDs, and achieve the effect of good light color quality and performance

Active Publication Date: 2018-05-08
JIANGSU WENRUN OPTOELECTRONICS
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Problems solved by technology

Although according to the current domestic and foreign standards, LED lighting related products will not produce high-risk blue light hazards, but due to the narrow beam of white LEDs, especially the relatively concentrated energy in the blue band range, long-term exposure of LED lighting sources to the human body will cause serious harm. Irradiation effect, the latest research at home and abroad have shown that its "rich blue" spectral quality is likely to affect the human rhythm, thereby reducing immunity

Method used

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  • White LED packaging method capable of making people feel comfortable
  • White LED packaging method capable of making people feel comfortable
  • White LED packaging method capable of making people feel comfortable

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0025] Such as figure 1 and image 3 As shown, a white light LED packaging method that makes people feel comfortable includes multiple LED chips, SMC brackets and fluorescent glue solutions, including the following steps:

[0026] Step 1. Set the LED chip in the bowl of the bracket. The LED chip is a blue LED chip with a peak emission band of 452.5-455nm. The LED chip is fixed on the SMC bracket with a die-bonding machine through insulating glue or silver glue. After completion, bake in an oven at 150-160°C for 2h±10min to completely fix the chip on the SMC bracket;

[0027] Step 2, using wire bonding technology to connect the positive and negative poles of the bracket through a gold wire bonding machine;

[0028] Step 3, dispensing glue. The fluorescent glue solution includes silica gel, yellow-green powder, red powder and KSF phosphor, wherein...

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Abstract

The invention provides a white LED packaging method capable of making people feel comfortable. Multiple LED wafers, an SMC support and a fluorescent adhesive solution are included. The method comprises the following steps: the LED wafers are arranged in a bowl of the support; a lead bonding technology is adopted to enable a positive electrode and a negative electrode of the support to be connectedthrough a gold wire welding machine; adhesive preparation is carried out; dispensing is carried out; and finally, the controlled parameters by the color quality requirements of the packaged white LEDare as follows: the color rendering index CRI> / =90, 80< / =gamut area index GAI< / =100, the television lighting index TLCI-2012> / =90, and the special color rendering index R9> / =50. According to the white LED packaging method capable of making people feel comfortable adopted in the invention, in comparison with the traditional white LED packaging method, the light color quality performance is better,and a light environment which is not dazzling to a human eye and makes people feel comfortable can be realized.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to a method for encapsulating white light LEDs that makes people feel comfortable. Background technique [0002] LED light source is the fourth-generation light source. Because it is a solid-state light source, it is a green light source with the characteristics of environmental protection, energy saving, and long life. Recently, the harm of LED lighting sources to the human body has attracted everyone's attention. Because the LED lighting source is easy to irradiate the human body for a long time, it may cause photochemical hazards to the skin and eyes, near-ultraviolet hazards to the eyes, photochemical hazards to the retina, retinal thermal hazards, and skin thermal hazards. All of the above-mentioned exposure limits have made standard regulations. The current domestic and foreign standards include GB / T 20145-2006 / CIE S009 / E: 2002, IEC62471, IEC / TR 62778-2012, CTL-0744_2009-laser r...

Claims

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Application Information

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IPC IPC(8): H01L25/075H01L33/50
CPCH01L25/0753H01L33/504H01L2933/0033H01L2224/48137
Inventor 刘三林
Owner JIANGSU WENRUN OPTOELECTRONICS
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