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Silica gel lens, fabrication method of silica gel lens and LED light emitting device comprising silica gel lens

A technology of silica gel lens and light-emitting devices, which is applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problems of low light efficiency of LED light-emitting devices, achieve the effects of improving light efficiency, facilitating processing, improving luminous efficiency and luminous quality

Active Publication Date: 2013-03-20
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a silica gel lens and its preparation method, and an LED light-emitting device containing it, so as to solve the problem of low light efficiency of LED light-emitting devices in the prior art

Method used

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  • Silica gel lens, fabrication method of silica gel lens and LED light emitting device comprising silica gel lens
  • Silica gel lens, fabrication method of silica gel lens and LED light emitting device comprising silica gel lens
  • Silica gel lens, fabrication method of silica gel lens and LED light emitting device comprising silica gel lens

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preparation example Construction

[0037] In yet another typical embodiment of the present invention, a method for preparing a silica gel lens is also provided, including: step A, mixing quantum dot polymer dispersion with a mass ratio of 1:3~7:40~50, fluorescent Mix the powder and silica gel to form a rubber mixture; step B, put the rubber mixture into the molding mold of the silicone lens, and evacuate until there are no visible air bubbles; and step C, inject the rubber mixture treated in step B to obtain a silicone lens .

[0038] The process of mixing the quantum dot polymer dispersion, fluorescent powder and silica gel to form the mixed glue can be done by magnetic stirring or mechanical stirring. It is preferable to use a special glue mixing machine to speed up the formation of the mixed glue; after injecting the mixed glue into the mold Vacuumize the bubbles to avoid affecting the light effect of the silicone lens due to the existence of bubbles in the silicone lens; due to the high production efficienc...

Embodiment 1

[0057] Mix 0.135g of YAG phosphor powder of model Y6BH-015 into 1.5g of Dow Corning optical base silica gel 6003, and use a mixer of model DAC150.1FVZX to stir 5 times at a speed of 3000r / min for 40 seconds each time to make the phosphor uniform Disperse in silica gel to form a mixed rubber. After each stirring, cool down for 30 seconds before the next stirring to keep the temperature below 40°C to prevent overheated silica gel from solidifying. Inject the above mixed rubber into the mold, vacuumize until there are no obvious bubbles; then place the mold filled with the mixed rubber in an oven at 150°C for 30 minutes and take it out. After the mold drops to room temperature, remove the mold and take out the phosphor silicone lens. . After completion, 0.2g of acrylate-modified silicone resin {CH 2 =CHCOO[(CH 3 ) 2 SiO] 60 OCCH=CH 2 ]} coated on the inner surface of the phosphor silicone lens, where the CdSe / ZnS quantum dot material is in the acrylate modified silicone resi...

Embodiment 2

[0059] Mix 0.135g of YAG phosphor powder of model Y6BH-015 into 1.5g of Dow Corning Optical Polar Silica Gel 6003, and stir 5 times with a mixer of model DAC150.1FVZX at a speed of 3000r / min for 40 seconds each time to make the phosphor even Disperse in silica gel to form a mixed rubber. After each stirring, cool down for 30 seconds before the next stirring to keep the temperature below 40°C to prevent overheated silica gel from solidifying. Inject the above mixed rubber into the mold, and vacuum until there are no obvious air bubbles; then place the mold filled with the mixed rubber in an oven at 200°C for 1 minute and take it out. After the mold drops to room temperature, remove the phosphor silica gel. lens. After completion, 0.3g of organosiloxane resin {CH 2 =CH(CH 3 ) 2 SiO[(CH 2 =CH)(CH 3 )SiO] 5 [(CH 3 )SiO] 60 (CH 3 ) 2 SiCH=CH 2 ]} coated on the outer surface of phosphor silicone lens, where CdSe / ZnS quantum dot material is in organosiloxane resin {CH 2 =...

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Abstract

The invention provides a silica gel lens, a fabrication method of the silica gel lens and an LED (light-emitting diode) light emitting device comprising the silica gel lens. The silica gel lens comprises a quantum dot macromolecule dispersion, fluorescent powder and silica gel with a mass ratio of 1:(3-7):(40-50), wherein mass content percentage of quantum dot materials in the quantum dot macromolecule dispersion is 0.01-10%. As the quantum dot materials have the characteristics of a wide excitation spectrum and continuous distribution of the spectrum, and light emitting wavelengths of quantum dots can be controlled by adjusting the particle diameter, the quantum dot materials with the different particle diameters can be selected according to design requirements; and as the spectrum half peak widths of the quantum dot materials are smaller, and the quantum dot materials have no self-absorption characteristics or low self-absorption characteristics, the light emitting efficiency and light emitting quality can be better improved, and a light emitting effect of the silica gel lens can be effectively improved.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to a silica gel lens, a preparation method thereof, and an LED light-emitting device containing the same. Background technique [0002] At present, the technical route to realize white light LED can be divided into two categories: the first category is the combination of chip + fluorescent material to emit white light, including blue chip + phosphor powder, ultraviolet chip + phosphor powder, blue-green chip + phosphor powder, purple light chip +Phosphor powder; the second type is that the chip itself or a combination emits white light, including LEDs with ZnSe as the substrate directly emitting white light, more than two chips emitting white light, and forming multiple light-emitting layers on the same substrate. [0003] The technical route of pure chip combination to emit white light has the problems of low light extraction efficiency and poor stability of green light and red light. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/56H01L33/58
Inventor 康永印苏凯史翰林汤彬彬
Owner NANJING TECH CORP LTD
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