Advanced Facilities Efficient ProductionDaim ntawv thov ntawm ultra-high-brightness LED ntxiv mus txuas ntxiv, ua ntej nkag mus rau hauv khw kev lag luam tshwj xeeb teeb pom kev zoo thiab txav mus rau tom khw lag luam teeb pom kev zoo. Vim tias qhov txuas ntxiv nce ntawm cov hluav taws xob nkag ntawm cov LED chips, cov kev cai siab dua tau muab tso rau ntawm lub tshuab ntim ntawm cov hwj huam LED no. Lub hwj chim LED ntim thev naus laus zis yuav tsum ua raws li ob qhov yuav tsum tau ua: Ua ntej, pob qauv yuav tsum muaj lub teeb pom kev zoo ntawm lub zog, thiab qhov thib ob, kev tiv thaiv thermal yuav tsum muaj tsawg li sai tau, thiaj li ua kom lub photoelectric kev ua tau zoo thiab kev cia siab ntawm lub zog LED.
Yog tias lub semiconductor LED yuav tsum tau siv los ua qhov pom kev ua kom pom tseeb, lub teeb hluav taws xob ntawm cov khoom siv yooj yim yog qhov deb ntawm cov khoom siv dav dav xws li lub teeb roj incandescent lossis lub teeb roj fluorescent. Yog li, thiaj li yuav tsim kho LEDs ntawm thaj chaw teeb pom kev zoo, qhov tseem ceeb yog nce lub luminous efficiency thiab luminous flux mus rau qib ntawm cov teeb pom kev zoo uas muaj tam sim no. Cov khoom siv epitaxial siv rau lub zog LEDs siv MOCVD epitaxial kev thev naus laus zis thiab ntau yam quantum zoo qauv. Txawm hais tias sab hauv quantum efficiency xav tau kev txhim kho ntxiv, qhov loj tshaj lub teeb meem kom tau qhov siab luminous flux yog qhov tsawg lub teeb tawm efficiency ntawm nti. Lub zog hluav taws xob LED tsim txais tshiab tshiab flip chip soldering qauv los txhim kho lub teeb pom kev zoo ntawm cov nti, txhim kho cov yam ntxwv thermal ntawm lub nti, thiab nce photoelectric hloov dua siab tshiab ntawm cov cuab yeej los ntawm kev ua thaj chaw ntau ntxiv thiab nce kev khiav haujlwm tam sim no. Siab zog luminous flux. Ntxiv rau cov nti, cov tshuab ntim khoom ntawm lub cuab yeej kuj tseem ceeb. Cov txheej txheem ntim khoom lag luam tseem ceeb yog:
Thaum tshav kub kub dissipation tshuab
Cov tsoos taw qhia hom LED pob qauv qauv feem ntau siv cov kua nplaum conductive lossis tsis-coj los rau tes ua cov nti hauv lub khob me me uas tsom iav lossis ntawm cov rooj thauj khoom. Cov xov tooj kub yog siv los ua kom tiav qhov kev sib txuas sab hauv thiab sab nraud ntawm lub cuab yeej thiab yog encapsulated nrog epoxy cob. Nws qhov kev ua haujlwm thermal yog siab txog 250 ° C / W ~ 300 ° C / W. Yog hais tias lub zog hluav taws xob tshiab tsim cov tsoos LED pob daim foos, qhov sib txig kub yuav nce ceev thiab cov roj epoxy carbonation yuav tig daj vim qhov kub tsis zoo. Ua kom lub teeb nrawm mus txog thaum tsis ua tiav, txawm tias muaj kev ntxhov siab los ntawm kev kub ceev nrawm vim los ntawm qhib Circuit Court tsis ua haujlwm.
Yog li no, rau lub hwj chim LED nti nrog qhov kev ua haujlwm loj tam sim no, ib lub pob tshiab qauv nrog cov thermal tsis kam, ua haujlwm zoo cua sov thiab tsis tshua muaj kev ntxhov siab yog qhov tseem ceeb ntawm lub zog LED ntaus ntawv. Lub nti tuaj yeem ua ntu zus nrog cov khoom siv nrog kev tsis kam thiab siab thermal conductivity; ib lub tooj liab lossis aluminium kub dab dej ntxiv rau sab qis ntawm lub nti, thiab ib qho qauv tsim ib nrab yog siv los ua kom nrawm tshav kub; thiab txawm tias lub teeb hluav taws xob hauv theem nrab yog tsim los txo cov thermal tsis kam ntawm lub cuab yeej. Sab hauv lub cuab yeej, ntim nrog cov roj hmab silicone yooj ywm nrog lub siab pom, hauv qhov kub thiab txias ntawm silicone roj hmab (feem ntau -40 ° C ~ 200 ° C), cov gel yuav tsis qhib vim muaj kev hloov sai sai hauv qhov kub, thiab yuav tsis tshwm daj daj tshwm sim. Cov. Cov khoom siv ua ib feem yuav tsum coj mus rau hauv lawv cov khoom siv thermal thiab thermal kom ua tiav cov khoom zoo ntawm lub tshav kub.
Thib ob kho qhov muag tsim thev naus laus zis
Txhawm rau txhawm rau txhim kho lub teeb ntxiv txuag hluav taws xob ntawm lub cuab yeej, lub khob ci ntsa iab ntxiv thiab ntau qhov muag tsom iav tau tsim.
Fais fab LED dawb lub teeb thev naus laus zis
Muaj peb txoj hauv kev los ua kom tiav lub teeb dawb:
(1) Lub npov xiav yog xaum nrog YAG phosphor, lub teeb xiav ntawm lub nti ua rau siab zoo rau phosphor kom emit daj-ntsuab lub teeb ntawm 540 nm ~ 560 nm, thiab lub teeb daj ntsuab-ntsuab thiab xiav lub teeb coj dawb lub teeb. Cov qauv yog yooj yim los npaj, siab hauv kev ua haujlwm, thiab kev siv. Qhov tsis zoo yog tias qhov sib xws ntawm daim ntaub tsis zoo, phosphor yog qhov yooj yim rau nag lossis daus, qhov tsis sib thooj ntawm lub teeb ci tsis zoo, lub suab xim tsis haum, xim kub yog qhov siab, thiab cov xim hloov xim tsis zoo.
(2) RGB peb lub hauv paus xim Ntau lub chips lossis ntau cov khoom siv coj los teeb lub teeb pom kev dawb, lossis siv xiav + daj ntsuab dual nti ua tiav xim los tsim lub teeb dawb. Ntev npaum li thaum lub cua sov dissipated, lub teeb dawb uas tsim los ntawm txoj kev yog ruaj khov dua li yav dhau los txoj kev, tab sis kev tsav tsheb muaj qhov cuam tshuam ntau dua, thiab qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov xim sib txawv kuj tau txiav txim siab.
(3) Thov siv RGB phosphor rau lub teeb ci ultraviolet lub teeb, thiab siv lub teeb xau violet ua kom zoo siab phosphor los tsim peb lub hauv paus xim los ua lub teeb dawb. Vim tias qhov qis qis ntawm cov hluav taws xob UV tam sim no thiab RGB phosphors, nws tseem tsis tau mus txog qhov theem tau zoo.
Peb ntseeg hais tias cov teeb meem kev ua haujlwm hauv qab no yuav tsum daws kom paub txog kev lag luam ntawm W-chav fais fab LED khoom rau lub teeb pom kev zoo:
1. Kev tswj cov hmoov txheej: Cov txheej txheem siv hauv LED nti + txheej txheem phosphor feem ntau yog tov cov phosphor nrog kua nplaum thiab tom qab ntawd thov nws rau cov nti nrog cov dispenser. Thaum lub sijhawm ua haujlwm, vim tias qhov viscosity ntawm cov cab kuj yog lub zog tsim, qhov tshwj xeeb ntawm lub phosphor yog qhov loj dua li ntawm cov thauj khoom gel, thiab qhov tseeb ntawm cov tshuaj faib tawm thiab qhov tseeb ntawm cov tshuaj xa tawm, tswj kev sib sau ntawm txheej nyiaj ntawm phosphor yog qhov nyuaj, uas ua rau lub teeb dawb. Tsis ncaj xim.
2, zaj duab xis photoelectric tsis muaj: cov yam ntxwv ntawm cov txheej txheem semiconductor, tib cov khoom siv tuaj yeem txiav txim siab qhov ntsuas qhov tsis xws luag (xws li nthwv dej, lub teeb ci) thiab hluav taws xob (xws li pem hauv ntej voltage) parameter sib txawv ntawm tib lub wafer nti. Qhov no yog qhov tseeb tshwj xeeb tshaj yog rau RGB trichromatic chips, uas muaj qhov cuam tshuam loj ntawm dawb chromaticity tsis muaj. Nov yog ib qho ntawm cov thev naus laus zis uas yuav tsum daws nyob hauv kev lag luam kev lag luam.
3. Tswj ntawm lub teeb nrig chromaticity raws li kev siv cov ntawv thov: Rau lub hom phiaj sib txawv, qhov tseev kom muaj rau kev sib haum xeeb xim, xim kub, hloov xim, lub zog kho qhov muag (lossis siv lub teeb ci) thiab kev faib tawm ntawm lub teeb ntawm dawb LEDs yog qhov sib txawv. Kev tswj ntawm cov ntsuas saum toj no koom nrog kev koom tes ntawm ntau yam xws li cov qauv khoom, cov txheej txheem txheej txheem thiab cov khoom siv. Hauv kev tsim khoom hauv kev lag luam, nws yog ib qho tseem ceeb tswj hwm cov saum toj no tau txais cov khoom uas ua tau raws li cov ntawv thov thiab muaj kev xwm txheej zoo.
Kev sim cov thev naus laus zis thiab cov qauv
Nrog txoj kev loj hlob ntawm W-chav fais fab chip tsim thev naus laus zis thiab dawb thev naus laus zis technology, LED cov khoom lag luam maj mam nkag mus hauv (kev lag luam tshwj xeeb) teeb pom kev zoo. Cov tsoos LED cov khoom lag luam ntsuas cov qauv ntsuas thiab cov qauv siv coj los ntsuas lossis ntsuas pom tsis tuaj yeem ua raws li qhov xav tau ntawm kev siv teeb pom kev zoo. Lub tshuab hluav taws xob semiconductor tuam txhab tsim khoom hauv tsev thiab txawv teb chaws kuj tau tsim lawv tus kheej ntsuas cov khoom siv. Muaj qee qhov sib txawv hauv cov qauv ntsuas, cov xwm txheej thiab cov qauv siv los ntawm cov twj paj nruag sib txawv, uas ua rau muaj qhov nyuaj thiab ua nyuaj ntawm daim ntawv thov xeem thiab cov khoom sib piv ntawm kev ua haujlwm.
Tuam Tshoj Koom Haum Optoelectronics Kev Lag Luam Kev Lag Luam Optoelectronics Sub-Committee Kev Lag Luam Koom Tes tso tawm "LED Txoj Kev Xeem (sim)" nyob rau xyoo 2003 raws li kev xav tau ntawm LED cov khoom tsim kho. Txoj kev ntsuas no tau ntxiv cov kev cai ntawm LED colorimetric tsis dhau. Txawm li cas los xij, LEDs yuav tsum tau nthuav dav rau hauv kev lag luam teeb pom kev zoo. Tsim cov txheej txheem LED teeb pom kev lag luam khoom yog qhov tseem ceeb ntawm kev ua qauv kev lag luam.
Soj ntsuam tshuab thiab kev ntseeg tau zoo
Vim muaj qhov txwv ntawm qhov pom ntawm lub luminaire, qhov sib dhos ntawm qhov chaw ntawm LED rau lub teeb pom kev zoo tau raug kaw thiab muaj qhov txwv, thiab qhov chaw ntim thiab qhov chaw tsawg tsis zoo rau cov hluav taws kub cua sov ntawm cov LED, uas txhais tau hais tias ib puag ncig rau kev taws teeb ntawm LED yog qes dua ntawm cov pa zaub thiab taw qhia LED cov khoom lag luam. Tsis tas li ntawd, lub teeb pom kev zoo ntawm LED yog ua haujlwm hauv kev tsav hluav taws xob siab, uas tso siab dua kom tso siab rau ntawm nws. Hauv kev tsim khoom hauv kev lag luam, nws yog qhov yuav tsum tau ua tiav kev tsim nyog thermal laus, kub hloov mus los, ntsuas kev laus txoj kev kuaj kev ntsuas rau kev siv cov khoom sib txawv, thiab tshem tawm cov khoom lag luam thaum ntxov kom ntseeg tau cov khoom lag luam ntseeg tau.
Kev tiv thaiv hluav taws xob thev naus laus zis
Txij li GaN yog cov khoom siv bandgap dav, qhov thev thev naus laus zis yog qhov siab, thiab qhov kev txiav txim siab uas tsim los ntawm hluav taws xob zoo li qub hauv cov txheej txheem ntau lawm tsis yooj yim ploj, thiab sau rau ntau yam, thiab lub siab qhov hluav taws xob muaj peev xwm tsim tau. Thaum cov khoom siv lub zog tuaj yeem tiv dhau qhov kev ua dhau, qhov tshwm sim muaj tshwm sim thiab paug tshwm sim. Lub xiav xiav ntawm sapphire substrate muaj qhov zoo thiab tsis zoo electrodes ntawm cov nti nrog lub suab me me. Rau InGaN / AlGaN / GaN ob chav ua haujlwm sib tshooj, InGaN active nyias txheej tsuas yog ob peb kaum ntawm nanometers, thiab cov hluav taws xob electrostatic muaj peev xwm me me, uas yooj yim heev. Nws tau tawg los ntawm hluav taws xob zoo li qub los ua kom lub cuab yeej ploj.
Yog li ntawd, hauv kev lag luam kev lag luam, kev tiv thaiv hluav taws xob zoo li qub yog qhov tsim nyog, cuam tshuam ncaj qha rau cov khoom lag luam tawm, kev ntseeg tau thiab cov txiaj ntsig kev lag luam. Muaj ntau cov tswv yim los tiv thaiv hluav taws xob zoo li qub:
1. Ua tib zoo tiv thaiv kev xa khoom, sib sau ua ke, thiab lwm yam ntawm tib neeg lub cev, platform, hauv av, qhov chaw thiab khoom siv rau kev tsim khoom thiab siv. Cov txhais tau los tiv thaiv cov khaub ncaws zoo nkauj, hnab looj tes, saws tes, khau, pads, thawv, ion kiv cua, kuaj cov twj, thiab lwm yam.
2. Tsim qhov hluav taws xob tiv thaiv hluav taws xob tiv thaiv rau ntawm cov nti.
3. Mount tiv thaiv ntaus ntawm LED.
Cov xwm txheej tam sim no ntawm lub zog LED ntim tshuab
Fais fab LEDs tau muab faib ua lub hwj huam LED thiab W-chav kawm hwj chim LEDs. Cov tswv yim nkag ntawm lub hwj chim LED yog tsawg dua 1W (tshwj tsis yog kaum tawm milliwatts ntawm lub hwj chim LED); cov fais fab nkag ntawm W-chav fais fab LED yog sib npaug los yog ntau dua 1W.
Txawv teb chaws zog LED ntim tshuab
(1) Fais fab LED
Thaum ntxov tshaj plaws, HP tau qhia cov LED ntawm "Piranha" pob qauv tsim hauv xyoo 1990, thiab qhia txog kev txhim kho "SnapLED" nyob rau xyoo 1994. Nws muaj ob qho kev khiav dej num tam sim no, 70mA thiab 150mA, thiab lub zog siv tuaj yeem ncav cuag 0.3W. Tom qab ntawd OSRAM qhia "PowerTOPLED". Tom qab ntawd, qee cov tuam txhab nthuav tawm ntau lub zog ntawm LED pob qauv qauv. Lub zog hluav taws xob ntawm cov qauv vaj huam sib luag yog ntau zaus ntau dua li ntawm LED lub zog nkag ntawm lub pob khoom qub, thiab lub thermal tsis kam yog txo los ntawm ib feem.
(2) W-chav fais fab LED
W-chav fais fab LED yog qhov tseem ceeb ntawm cov teeb pom kev zoo yav tom ntej, yog li ntawd cov tuam txhab loj hauv ntiaj teb tau nqis peev ntau los tshawb nrhiav thiab txhim kho lub tshuab ntim ntawm W-chav fais fab LED.
Ib qho xaim hluav taws xob W-chav kawm hluav taws xob LED tau qhia ua ntej los ntawm Lumileds hauv 1998. Cov pob qauv qauv yog yam ntxwv ntawm thermoelectric sib cais. Daim pam ntiv tes ncaj qha yog muag ncaj qha mus rau lub thawv cua sov nrog lub thev naus laus zis silicon, thiab lub khob cuam tshuam thiab kho qhov muag tau siv. Cov kev tsim kho tshiab thiab cov khoom siv xws li cov lo ntsiab muag thiab cov nplaim hluavtaws nplaum muaj tam sim no muaj nyob rau hauv high-power LED nrog ib leeg-chip 1W, 3W thiab 5W. OSRAM nthuav tawm ib leeg-nti "GoldenDragon" series ntawm LEDs hauv 2003, uas yog pom los ntawm cov dab dej kub thiab hlau. Lub rooj tsav xwm hauv Circuit Court yog nyob rau hauv kev sib txuas lus ncaj qha thiab muaj qhov ua kom zoo cua sov ua kom zoo, thiab lub zog fais fab tuaj yeem ncav cuag 1W.
High-power LEDs nrog cov pob ntau pob muaj nyob hauv ntau cov qauv thiab pob. Nyob rau xyoo 2001, UOE Corporation nthuav qhia Norlux series ntawm LEDs hauv cov pob ntau pob nrog pob hexagonal txhuas phaj raws li cov sab. Nyob rau xyoo 2003, LaninaCeramics qhia txog lub zog siab ua hluav taws xob LED ua ntim rau ntawm lub tuam txhab cov khoom lag luam uas tsis tshua muaj siab sintered ceramic (LTCC-M) thev naus laus zis ntawm cov hlau. Hauv xyoo 2003, Panasonic tau pib lub siab-lub zog dawb LED ntim ua ke los ntawm kev sib txuas ntawm 64 chips. Nyob rau xyoo 2003, Nichia Corporation tshaj tawm tias nws yog lub teeb pom kev dawb dawb tshaj plaws nyob hauv lub ntiaj teb, nrog lub teeb ci ntawm 600 lm thiab cov nplais tawm ntawm 1000 lm. Nws yog 30W, qhov kev txiav txim siab ntau zog yog 50W, thiab dawb LED module uas muab cov khoom tso rau pom muaj cov luminous efficiency ntawm 33lm / W.
Hais txog lub zog loj LEDs nrog ntau lub pob sib xyaw ua ke, ntau lub tuam txhab tau tsim ntau cov khoom tshiab nrog cov qauv tshiab thiab ntim raws li kev ua lag luam xav tau tiag tiag, thiab lawv txoj kev txhim kho tau nrawm heev.
Raug hluav taws xob ntim LED ntim tshuab
Cov khoom lag luam ntim hauv LED ua tiav ntau dua. Raws li kev kwv yees ua ntej, muaj ntau tshaj 200 LED ntim khoom lag luam nyob hauv Suav teb, nrog ntim peev ntau ntau tshaj 20 billion / xyoo, thiab lub peev xwm ntim kuj tseem muaj zog heev. Txawm li cas los xij, ntau lub ntim ntim khoom yog cov tuam txhab ntiag tug, uas yog me me hauv kev ntsuas. Txawm li cas los xij, MB series high-power LEDs encapsulated los ntawm MetalConding thev naus laus zis hauv Tuam Tshoj Taiwan UEC Corporation (National Union) yog tus cwj pwm los hloov chaw GaAs nrog rau Si, muab cov cua sov kom zoo, thiab siv cov hlau sib txuas txheej ua lub teeb pom kev zoo lub teeb kom zoo dua qub lub teeb tso zis. Cov.
Rau kev tshawb nrhiav thiab kev loj hlob ntawm high-power LED ntim thev naus laus zis, lub teb chaws tsis tau lees paub kev nqis peev, thiab cov kev tshawb fawb hauv tsev tsis tshua muaj kev cuam tshuam. Lub zog ntawm kev nqis peev thiab kev tshawb fawb (tus neeg siv khoom thiab kev siv nyiaj txiag) ntawm kev lag luam ntim khoom tseem tsis txaus, tsim txoj kev lag luam tsis muaj zog hauv kev tsim ntim tshuab. Cov txheej txheem theem ntawm kev ntim khoom los tseem txawv ntawm kev txawv teb chaws.