Qhov cuam tshuam ntawm Epoxy Resin Encapsulation ntawm Optical Properties ntawm LEDs

 

LED (Lub Teeb Emitting Diode), yog hom tshiab ntawm kev ua haujlwm siab thiab txuag hluav taws xob, tau siv dav hauv ntau qhov chaw xws li teeb pom kev zoo thiab tso saib. Epoxy resin, vim nws qhov pom kev pom zoo, cov cuab yeej rwb thaiv tsev, thiab kev ua haujlwm zoo, tau dhau los ua cov khoom siv feem ntau hauv LED encapsulation. Cov khoom siv kho qhov muag ntawm LEDs (xws li luminous siv, xim sib xws, angular tis, thiab lwm yam) ncaj qha cuam tshuam rau lawv cov kev ua tau zoo hauv cov xwm txheej sib txawv thiab cov neeg siv kev paub. Thiab epoxy resin encapsulation, raws li qhov txuas tseem ceeb hauv cov txheej txheem tsim khoom ntawm LED, muaj kev cuam tshuam tseem ceeb ntawm cov khoom siv kho qhov muag ntawm LEDs. In-depth kev tshawb fawb ntawm lub hwj chim ntawm epoxy resin encapsulation ntawm cov khoom siv kho qhov muag ntawm LEDs yog qhov tseem ceeb rau kev txhim kho cov khoom zoo ntawm LED thiab nthuav lawv daim ntawv thov teb.

Cov yam ntxwv ntawm Epoxy Resin thiab LED Encapsulation

Epoxy resin yog cov thermosetting resin nrog qhov pom kev pom zoo heev, uas ua rau lub teeb tawm los ntawm LED nti kom dhau los ntawm cov khoom siv encapsulation ntau li ntau tau. Nws qhov refractive index feem ntau yog nyob ib ncig ntawm 1.5, uas txawv ntawm cov khoom ntawm LED nti (xws li GAN, thiab lwm yam). Thaum lub sij hawm encapsulation txheej txheem, tom qab cov epoxy resin yog tov nrog tus neeg sawv cev kho, ib tug cross-linking cov tshuaj tiv thaiv tshwm sim los ntawm cua sov thiab lwm txoj kev los tsim ib tug peb-dimensional network qauv ntawm ib tug khoom. Cov epoxy resin kho tau zoo txhua yam muaj zog thiab tshuaj lom neeg ruaj khov, uas tuaj yeem tiv thaiv LED nti los ntawm kev cuam tshuam ntawm ib puag ncig sab nraud thiab tseem muaj kev cuam tshuam loj rau cov khoom siv kho qhov muag ntawm LED.

 

Cawv ntawm Epoxy Resin Encapsulation nyob rau ntawm lub luminous siv ntawm LEDs

(A) Optical Transparency thiab Light Propagation

Optical pob tshab ntawm epoxy resin yog ib qho tseem ceeb ntawm cov teeb pom kev zoo ntawm LEDs. Yog hais tias muaj impurities, npuas, los yog tsis tiav curing nyob rau hauv lub epoxy resin thaum lub sij hawm kho, nws yuav ua rau lub teeb tawg thiab absorbed thaum lub sij hawm propagation txheej txheem, yog li txo lub teeb transmittance thiab txo lub luminous siv ntawm LED. Piv txwv li, cov npuas me me yuav hloov txoj kev nthuav tawm ntawm lub teeb, ua rau lub teeb pom kev thiab thim rov qab ntau zaus, ua rau lub teeb poob hauv epoxy resin. Thiab lub xub ntiag ntawm impurities yuav nqus lub teeb ntawm cov wavelengths tshwj xeeb, ntxiv txo cov luminous siv. Yog li ntawd, kev txhim kho cov purity ntawm epoxy resin thiab qhov zoo ntawm kev kho, thiab txo cov kev tsis zoo sab hauv yog qhov tseem ceeb rau kev ua kom lub luminous siv ntawm LED.

(B) Refractive Index Matching

Lub degree ntawm refractive Performance index sib piv ntawm LED nti thiab epoxy resin kuj cuam tshuam rau lub luminous siv. Thaum lub teeb tso tawm los ntawm LED nti nkag mus rau hauv epoxy resin los ntawm nti, yog tias qhov ntsuas refractive ntawm ob qhov sib txawv heev, kev cuam tshuam loj thiab kev xav yuav tshwm sim, ua rau qee lub teeb tsis tuaj yeem tawm ntawm epoxy resin, yog li txo qhov kev siv luminous. Los ntawm kev xaiv ib qho tsim nyog epoxy resin los yog ntxiv ib qho refractive index modifier rau epoxy resin, qhov refractive Performance index txuam tuaj yeem ua kom zoo, qhov kev xav ntawm lub teeb tuaj yeem txo qis, lub teeb coupling efficiency tuaj yeem txhim kho, thiab yog li qhov luminous siv ntawm LED tuaj yeem nce ntxiv. Piv txwv li, siv epoxy resin nrog lub siab refractive Performance index tuaj yeem tso cai ntau lub teeb nkag mus rau epoxy resin los ntawm nti thiab txo qhov kev xav ntawm lub teeb ntawm lub interface.

(C) Encapsulation Thickness

Lub encapsulation thickness ntawm epoxy resin kuj muaj qee yam cuam tshuam rau lub luminous siv ntawm LED. Ib txheej txheej thicker yuav ua rau kom txoj kev nthuav tawm ntawm lub teeb nyob rau hauv epoxy resin, yog li ua rau muaj feem cuam tshuam ntawm lub teeb tawg thiab nqus thiab txo cov luminous siv. Tsis tas li ntawd, txheej txheej txheej txheej txheej tuab dhau kuj tseem tuaj yeem ua rau cov cua sov tuaj yeem nyob ib puag ncig ntawm lub nti, cuam tshuam rau kev ua haujlwm ntawm cov nti thiab tsis ncaj qha txo cov luminous siv. Txawm li cas los xij, lub thickness encapsulation tsis tuaj yeem nyias dhau, txwv tsis pub nws tsis tuaj yeem muab kev tiv thaiv kev tiv thaiv thiab kho qhov muag sib xws. Yog li ntawd, raws li cov ntawv thov tshwj xeeb thiab cov yam ntxwv ntawm LED nti, encapsulation thickness ntawm epoxy resin yuav tsum tau tswj xyuas kom ua tiav qhov zoo tshaj plaws luminous siv.

 

Qhov cuam tshuam ntawm Epoxy Resin Encapsulation ntawm Cov Xim Zoo ib yam ntawm LEDs

(A) Refractive Index Hloov thiab Xim Hloov

Raws li tau hais los saum toj no, qhov refractive index ntawm epoxy resin yuav cuam tshuam los ntawm ntau yam, xws li kev kho mob, qhov kub thiab txias, av noo, thiab lwm yam. Thaum lub refractive index ntawm epoxy resin hloov, lub propagation ceev thiab refraction lub kaum sab xis ntawm lub teeb sib txawv wavelengths nyob rau hauv nws kuj yuav hloov, ua rau ib tug xim hloov. Piv txwv li, qhov nce ntawm qhov kub thiab txias yuav ua rau qhov refractive Performance index ntawm epoxy resin txo qis, ua rau kev nthuav tawm ntawm lub teeb liab sai dua thiab kev nthuav tawm ceev ntawm lub teeb xiav kuj qeeb, ua rau cov xim ntawm lub teeb tawm los ntawm LED hloov mus rau liab. Yog li ntawd, thaum lub sij hawm LED encapsulation txheej txheem, cov kev kho mob thiab kev ua hauj lwm ib puag ncig yuav tsum tau nruj me ntsis tswj kom lub stability ntawm lub refractive index ntawm epoxy resin thiab yog li xyuas kom meej xim sib xws.

(B) Dispersion thiab Uniformity ntawm Phosphor

Hauv cov LEDs dawb, phosphor feem ntau yog ntxiv rau epoxy resin kom ua tiav lub teeb dawb. Lub dispersion uniformity ntawm phosphors muaj ib qho tseem ceeb cuam tshuam rau cov xim sib xws ntawm LED. Yog hais tias cov phosphors tsis sib xws nyob rau hauv epoxy resin, nws yuav ua rau sib txawv phosphor concentrations nyob rau hauv txawv cheeb tsam, uas ua rau cov xim sib txawv nyob rau hauv lub teeb emissions los ntawm txawv cheeb tsam. Piv txwv li, phosphor concentration ntau dhau hauv ib cheeb tsam hauv cheeb tsam yuav ua rau lub teeb tawm ntawm thaj chaw ntawd yuav daj, thaum thaj chaw uas muaj phosphor concentration tsawg yuav zoo li xiav. Txhawm rau txhim kho qhov sib txawv ntawm qhov sib txawv ntawm cov phosphors, cov txheej txheem nplawm tsim nyog thiab cov khoom siv ntxiv tuaj yeem siv los xyuas kom meej tias cov phosphors raug faib ua tib yam hauv epoxy resin.

(C) Kev laus ntawm Epoxy resin thiab xim hloov

Sij hawm dhau los thiab nrog kev hloov pauv hauv ib puag ncig kev siv, epoxy resin yuav dhau los ua cov txheej txheem kev laus, xws li yellowing, degradation, thiab lwm yam. Cov txheej txheem kev laus no yuav hloov cov khoom siv kho qhov muag ntawm epoxy resin thiab yog li cuam tshuam cov xim sib xws ntawm LED. Piv txwv li, lub yellowing ntawm epoxy resin yuav nqus tau ib co xiav lub teeb, ua rau cov xim ntawm lub teeb emissions ntawm LED hloov mus rau daj. Txhawm rau ncua kev laus ntawm epoxy resin thiab txhim kho cov xim ruaj khov, cov tshuaj tiv thaiv kev laus, ultraviolet absorbers, thiab lwm yam khoom ntxiv tuaj yeem ntxiv rau epoxy resin. Nyob rau tib lub sijhawm, cov qauv encapsulation tuaj yeem ua kom zoo kom txo tau qhov cuam tshuam ntawm ib puag ncig sab nraud ntawm epoxy resin.

 

Qhov cuam tshuam ntawm Epoxy Resin Encapsulation ntawm Angular Distribution ntawm LEDs

(A) Encapsulation Shape thiab Lub Teeb Refraction

Cov duab encapsulation ntawm epoxy resin yuav cuam tshuam rau refraction thiab propagation kev taw qhia ntawm lub teeb, yog li hloov lub angular faib ntawm LED. Cov duab encapsulation feem ntau muaj xws li ncig, square, hemispherical, thiab lwm yam. Cov duab encapsulation sib txawv yuav ua rau cov teeb meem sib txawv ntawm lub teeb nyob rau saum npoo ntawm epoxy resin, yog li cuam tshuam rau lub kaum sab xis refraction thiab tawm ntawm lub teeb. Piv txwv li, ib qho hemispherical encapsulation tuaj yeem ua kom lub teeb tawg ntau sib npaug ntawm txhua qhov kev qhia, ua tiav qhov dav dav dav; thaum lub square encapsulation yuav ua rau lub teeb kom mloog zoo nyob rau hauv tej yam kev taw qhia, ua ib tug nqaim angular faib. Yog li ntawd, raws li kev thov tshwj xeeb, xaiv qhov tsim nyog encapsulation zoo tuaj yeem kho cov angular faib ntawm LED kom ua tau raws li cov teeb pom kev sib txawv thiab cov kev xav tau.

(B) Refractive Index Gradient thiab Light Control

Los ntawm kev tsim cov refractive index gradient nyob rau hauv epoxy resin, ntau meej tswj ntawm lub teeb yuav ua tau tiav, yog li hloov lub angular faib ntawm LED. Piv txwv li, cov khoom siv epoxy resin nrog gradient refractive index yuav siv tau los maj mam hloov cov kev taw qhia ntawm lub teeb thaum lub sij hawm propagation txheej txheem kom tiav ib tug tshwj xeeb angular faib. Tsis tas li ntawd, microstructures (xws li microlens arrays) tuaj yeem muab ntxiv rau saum npoo ntawm epoxy resin, thiab qhov cuam tshuam thiab kev cuam tshuam ntawm microstructures tuaj yeem siv los kho lub kaum sab xis ntawm lub teeb kom ua tiav qhov nqaim lossis dav dav.

(C) Qhov cuam tshuam ntawm txheej txheem Encapsulation ntawm Angular Distribution

Qhov tseeb thiab qhov sib xws ntawm cov txheej txheem encapsulation tseem yuav cuam tshuam rau kev faib tawm ntawm LED. Piv txwv li, thaum lub sij hawm dispensing encapsulation txheej txheem, yog hais tias tus nqi ntawm cov kua nplaum yog tsis sib xws los yog lub dispensing txoj hauj lwm yog tsis raug, nws yuav ua rau unevenly faib ntawm epoxy resin nyob ib ncig ntawm lub LED nti, yog li cuam tshuam rau propagation ntawm lub teeb thiab angular tis. Tsis tas li ntawd, kev tswj tsis raug ntawm qhov kub thiab lub sijhawm thaum lub sijhawm kho kuj tseem tuaj yeem ua rau tsis sib xws ntawm cov epoxy resin, hloov cov duab thiab cov khoom siv kho qhov muag ntawm lub encapsulation, thiab yog li cuam tshuam rau cov angular faib. Yog li ntawd, kev ua kom zoo ntawm cov txheej txheem encapsulation thiab txhim kho cov txheej txheem raug thiab sib xws yog qhov tseem ceeb rau kev ua kom muaj kev ruaj ntseg ntawm cov angular faib ntawm LED.

 

Cov txheej txheem rau Optimizing Epoxy Resin Encapsulation los txhim kho cov cuab yeej kho qhov muag ntawm LEDs

(A) Kev xaiv cov khoom siv thiab kev ua kom zoo

Xaiv cov epoxy resin nrog siab purity thiab tsis tshua muaj impurity cov ntsiab lus, nrog rau ib tug curing neeg sawv cev thiab additives nrog zoo compatibility nrog cov epoxy resin, yog lub hauv paus rau kev txhim kho cov kho qhov muag khoom ntawm LED. Nyob rau tib lub sijhawm, raws li cov ntawv thov tshwj xeeb, cov khoom siv epoxy resin nrog cov ntsuas tshwj xeeb refractive, thermal stability, thiab kho qhov muag tuaj yeem xaiv. Piv txwv li, rau high-power LEDs, xaiv ib tug epoxy resin nrog high thermal conductivity thiab tsis tshua muaj hygroscopicity tuaj yeem txo qhov kub ntawm cov nti thiab txo qhov txo qis hauv cov khoom kho qhov muag.

(B) Txhim kho cov txheej txheem Encapsulation

Optimizing cov txheej txheem encapsulation, xws li precisely tswj tus nqi dispensing, dispensing txoj hauj lwm, thiab kho tej yam kev mob, tuaj yeem txhim kho qhov raug thiab sib xws ntawm cov encapsulation thiab txo qhov kev hloov pauv ntawm cov khoom kho qhov muag. Kev siv cov thev naus laus zis encapsulation, xws li flip-chip ntim, chip-scale ntim, thiab lwm yam, tuaj yeem ua rau txoj kev nthuav dav ntawm lub teeb, txo lub teeb poob, thiab txhim kho lub luminous siv thiab ruaj khov ntawm cov khoom kho qhov muag. Tsis tas li ntawd, qhia txog kev siv tshuab micro-nano los tsim cov microstructures nyob rau saum npoo ntawm epoxy resin tuaj yeem ua tiav kev tswj xyuas lub teeb kom meej dua thiab txhim kho cov angular faib.

(C) Kev soj ntsuam zoo thiab kev tswj xyuas

Tsim kom muaj kev tshuaj ntsuam xyuas kom zoo los soj ntsuam cov khoom siv kho qhov muag ntawm LEDs encapsulated nrog epoxy resin, nrog rau kev tshawb nrhiav cov ntsuas xws li luminous siv, xim sib xws, thiab kev faib tawm. Los ntawm kev saib xyuas lub sijhawm tiag tiag thiab kev tshuaj xyuas cov ntaub ntawv, cov teeb meem uas tshwm sim thaum lub sijhawm txheej txheem encapsulation tuaj yeem tshawb pom thiab daws tau raws sijhawm kom ntseeg tau tias kev ruaj ntseg thiab zoo ib yam ntawm cov khoom zoo.

xaus

Epoxy resin encapsulation muaj qhov cuam tshuam loj rau cov khoom siv kho qhov muag (luminous siv, xim sib xws, angular faib, thiab lwm yam) ntawm LEDs. Los ntawm kev nkag siab tob txog kev sib raug zoo ntawm cov yam ntxwv ntawm epoxy resin, txheej txheem encapsulation, txheej txheem kho, thiab cov khoom kho qhov muag ntawm LEDs, cov kev ntsuas sib xws tuaj yeem raug coj los ua kom zoo dua cov txheej txheem encapsulation thiab txhim kho cov khoom kho qhov muag ntawm LEDs. Nyob rau hauv lub neej yav tom ntej txoj kev loj hlob, nrog kev nce qib ntawm LED technology thiab kev nthuav dav ntawm daim ntawv thov kev lag luam, cov kev xav tau ntawm epoxy resin encapsulation tseem yuav ua siab dua thiab siab dua. Peb yuav tsum tsis tu ncua tshawb nrhiav cov ntaub ntawv tshiab, txheej txheem, thiab thev naus laus zis kom ua tau raws li cov kev xav tau ntawm LED kev lag luam rau cov khoom lag luam siab thiab kev ntseeg siab thiab txhawb kev txhim kho kev lag luam LED.

Yog xav paub ntxiv txog kev xaiv qhov zoo tshaj plaws cuam tshuam ntawm epoxy resin encapsulation ntawm cov khoom kho qhov muag ntawm LEDs, koj tuaj yeem them mus ntsib DeepMaterial ntawm https://www.epoxyadhesiveglue.com/category/epoxy-adhesives-glue/ yog xav paub ntau info.