Rau cov neeg siv ntawm cov ntxaij vab tshaus LED loj, yuav tsum tau them nyiaj ntau rau qhov kub thiab txias ntawm cov ntxaij vab tshaus LED loj. Cia kuv qhia rau koj txog qhov cuam tshuam ntawm qhov kub thiab txias ntawm LED zaub.
LED zaub
1. Qhov kub ntau dhau yuav ua rau kev puas tsuaj tag nrho ntawm cov khoom coj ua
(1) Kev ua haujlwm kub ntawm lub vijtsam coj zaub ntau tshaj qhov ntsuas kub ntawm lub nti, uas yuav ua rau lub teeb pom kev zoo ntawm lub vijtsam coj mus rau txo qis, ua rau pom tseeb lub teeb attenuation thiab ua rau kev puas tsuaj;
(2) LED cov ntxaij vab tshaus feem ntau yog ntim nrog pob tshab epoxy resin. Yog tias qhov kub thiab txias tshaj qhov kub ntawm qhov hloov pauv (feem ntau yog 125 degree), cov khoom ntim yuav hloov mus rau hauv cov roj hmab thiab cov thermal expansion coefficient yuav nce siab, ua rau qhib Circuit Court thiab tsis ua haujlwm ntawm lub vijtsam coj. .
Qhov thib ob, qhov nce ntawm qhov kub thiab txias yuav ua rau lub neej luv ntawm cov zaub coj
Lub neej ntev ntawm lub teeb pom kev pom tau pom los ntawm nws lub teeb lwj, uas yog, qhov ci ntsa iab qis dua thiab qis dua raws li lub sijhawm dhau mus, kom txog rau thaum nws tawm mus. Nws feem ntau txhais tau hais tias lub sij hawm thaum lub luminous flux ntawm cov coj zaub screen decays los ntawm 30 yog nws lub neej.
Yog vim li cas rau lub teeb lwj ntawm LED cov ntxaij vab tshaus feem ntau yog raws li nram no:
(1) Qhov tsis xws luag hauv cov khoom siv hauv LED nti yuav nrawm nrawm thiab sib npaug ntawm qhov kub siab dua, kom txog rau thaum lawv nkag mus rau thaj chaw teeb pom kev zoo, tsim ntau qhov chaw tsis muaj hluav taws xob sib xyaw, thiab txo qis kev ua haujlwm zoo ntawm LED zaub. . Tsis tas li ntawd, nyob rau hauv qhov kub thiab txias, micro-defects nyob rau hauv cov khoom thiab ceev-expanding impurities los ntawm lub interface thiab lub phaj yuav kuj yuav tau nkag mus rau hauv lub teeb-emitting cheeb tsam, tsim ib tug loj tus naj npawb ntawm cov sib sib zog nqus theem, uas tseem yuav ua rau kom lub teeb. Lub teeb lwj ntawm LED zaub ntaus ntawv.
(2) Cov pob tshab epoxy resin yuav denature thiab tig daj ntawm qhov kub thiab txias, uas yuav cuam tshuam rau nws lub teeb kis tau tus mob. Qhov siab dua qhov ua haujlwm kub, qhov txheej txheem no yuav ua sai dua. Qhov no yog lwm qhov laj thawj tseem ceeb rau lub teeb tawg ntawm LED zaub.
(3) Lub teeb lwj ntawm phosphors kuj yog ib qho laj thawj tseem ceeb uas cuam tshuam rau lub teeb lwj ntawm LED cov ntxaij vab tshaus, vim tias qhov txo qis ntawm phosphors yog qhov hnyav heev ntawm qhov kub thiab txias.
Yog li ntawd, qhov kub thiab txias yog lub hauv paus tseem ceeb ntawm cov teeb pom kev zoo ntawm cov teeb pom kev zoo thiab ua kom lub neej luv ntawm cov duab coj.
LED zaub
Lub teeb attenuation ntawm ntau hom ntawm LED cov ntxaij vab tshaus yog txawv, feem ntau coj zaub manufacturers yuav muab ib tug txheej txheem teeb attenuation nkhaus. Lub attenuation ntawm lub luminous flux ntawm cov coj zaub screen tshwm sim los ntawm qhov kub thiab txias yog unrecoverable, thiab lub luminous flux ua ntej lub unrecoverable lub teeb attenuation ntawm lub coj zaub screen yog hu ua "thawj luminous flux" ntawm lub LED zaub screen.
Thib peb, qhov nce hauv qhov kub thiab txias yuav txo qhov luminous efficiency ntawm LED zaub
Cov laj thawj vim li cas qhov kub thiab txias cuam tshuam rau lub teeb pom kev zoo ntawm LED zaub suav nrog cov hauv qab no:
(1) Raws li qhov kub thiab txias, qhov concentration ntawm electrons thiab qhov yuav nce, qhov sib txawv band yuav txo, thiab electron txav yuav txo.
(2) Raws li qhov kub thiab txias, qhov tshwm sim ntawm radiative recombination ntawm electrons thiab qhov nyob rau hauv lub peev xwm zoo txo, uas ua rau cov non-radiative recombination (kub tiam), yog li txo lub internal quantum efficiency ntawm LED zaub.
(3) Qhov kub thiab txias ua rau lub ncov xiav nthwv dej ntawm cov nti hloov mus rau qhov kev taw qhia yoj ntev, uas ua rau lub emission wavelength ntawm lub nti thiab qhov excitation wavelength ntawm phosphor tsis sib xws, thiab tseem ua rau txo qis ntawm lub teeb sab nraud. extraction efficiency ntawm lub teeb dawb LED zaub.
(4) Raws li qhov kub thiab txias, qhov quantum efficiency ntawm phosphor hmoov txo qis, lub teeb tso zis txo, thiab lub teeb sab nraud extraction efficiency ntawm LED zaub screen txo.
(5) Kev ua haujlwm ntawm silica gel cuam tshuam zoo heev los ntawm qhov kub thiab txias. Raws li qhov kub thiab txias, qhov thermal stress nyob rau hauv lub silica gel nce, ua rau lub refractive index ntawm silica gel txo, yog li cuam tshuam lub teeb efficiency ntawm LED zaub.
Plaub, qhov cuam tshuam ntawm qhov kub thiab txias ntawm lub luminous wavelength (lub teeb xim) ntawm cov zaub coj
Lub luminous wavelength ntawm coj zaub feem ntau yuav muab faib ua lub ncov wavelength thiab dominant wavelength. Lub ncov wavelength yog lub wavelength nrog lub teeb siab tshaj plaws, thiab qhov tseem ceeb wavelength tuaj yeem txiav txim siab los ntawm X thiab Y chromaticity kev sib koom ua ke, cuam tshuam cov xim pom los ntawm tib neeg lub qhov muag. Obviously, qhov kev hloov nyob rau hauv lub teeb-emitting wavelength ntawm lub coj zaub screen tshwm sim los ntawm qhov sib txuas qhov kub thiab txias yuav ncaj qha ua rau tib neeg lub qhov muag kom muaj kev nkag siab sib txawv ntawm lub teeb-emitting xim ntawm LED zaub screen. Rau ib qho khoom siv LED, qhov sib txawv ntawm cov khoom siv nyob rau hauv lub teeb-emitting cheeb tsam ncaj qha txiav txim lub wavelength los yog xim ntawm lub teeb emission ntawm lub teeb. Raws li qhov kub thiab txias, qhov sib txawv ntawm cov khoom siv yuav txo qis, uas yuav ua rau lub cuab yeej emit ntev wavelengths thiab liab hloov xim.
5. Qhov kub thiab txias yuav cuam tshuam rau qhov siab tshaj plaws txhaj tshuaj tam sim no ntawm LED zaub
Raws li qhov kub thiab txias, qhov concentration ntawm electrons thiab qhov yuav nce, qhov sib txawv band yuav txo, thiab electron txav mus los yuav txo, thiab qhov siab tshaj plaws txhaj tshuaj tam sim no ntawm LED zaub screen yuav raug txwv.
Cov saum toj no yog qhov cuam tshuam ntawm qhov kub thiab txias ntawm cov zaub coj. Yog tias koj ntsib teeb meem kev siv thaum siv, thov koj tham nrog Winbond Ying Optoelectronics. Peb yuav sim peb qhov zoo tshaj plaws los pab koj.
