Yuav kom ua tiav cov txiaj ntsig zoo tshaj plaws, cov khoom siv zoo tshaj plaws LED cov ntxaij vab tshaus feem ntau yuav tsum tau ntsuas qhov ci thiab xim, kom qhov ci thiab xim sib xws ntawm LED zaub screen tom qab teeb pom kev zoo tuaj yeem ncav cuag qhov zoo tshaj plaws.Yog li vim li cas thiaj li ua tau zoo LED zaub screen yuav tsum tau calibrated, thiab nws yuav tsum tau calibrated li cas?
Ib feem.1
Ua ntej, nws yog ib qho tsim nyog kom nkag siab txog cov yam ntxwv ntawm tib neeg lub qhov muag pom ntawm qhov ci.Qhov tseeb ci ntsa iab pom los ntawm tib neeg lub qhov muag tsis yog linearly cuam tshuam nrog lub ci ci tawm los ntawm ib qhoLED zaub screen, tab sis qhov tsis yog-linear kev sib raug zoo.
Piv txwv li, thaum tib neeg lub qhov muag saib ntawm lub vijtsam LED zaub nrog qhov ci ci tiag tiag ntawm 1000nit, peb txo qhov ci ntsa iab rau 500nit, ua rau 50% txo qhov ci ntsa iab.Txawm li cas los xij, qhov pom qhov ci ntawm tib neeg lub qhov muag tsis txo qis mus rau 50%, tab sis tsuas yog mus rau 73%.
Qhov tsis-linear nkhaus ntawm qhov pom qhov ci ntawm tib neeg lub qhov muag thiab qhov ci ci tiag tiag ntawm lub vijtsam LED yog hu ua gamma nkhaus (raws li qhia hauv daim duab 1).Los ntawm gamma nkhaus, nws tuaj yeem pom tau tias qhov kev nkag siab ntawm kev hloov pauv ntawm lub qhov muag ntawm tib neeg lub qhov muag yog qhov tseem ceeb, thiab qhov tseeb ntawm qhov hloov pauv ntawm qhov ci ci ntawm cov duab LED tsis zoo ib yam.
Ib feem.2
Tom ntej no, cia peb kawm txog cov yam ntxwv ntawm cov xim pom kev hloov hauv tib neeg lub qhov muag.Daim duab 2 yog daim ntawv CIE chromaticity, qhov twg cov xim tuaj yeem sawv cev los ntawm cov xim xim lossis lub teeb wavelength.Piv txwv li, lub wavelength ntawm ib qho screen LED zaub yog 620 nanometers rau ib tug liab LED, 525 nanometers rau ntsuab LED, thiab 470 nanometers rau xiav LED.
Feem ntau hais lus, nyob rau hauv ib qho chaw xim tsis sib xws, tib neeg lub qhov muag ua siab ntev rau cov xim sib txawv yog Δ Euv = 3, tseem hu ua qhov muag pom qhov sib txawv xim.Thaum cov xim sib txawv ntawm LEDs tsawg dua tus nqi no, nws tau txiav txim siab tias qhov sib txawv tsis tseem ceeb.Thaum Δ Euv> 6, nws qhia tias tib neeg lub qhov muag pom qhov sib txawv xim loj ntawm ob xim.
Los yog nws feem ntau ntseeg tias thaum lub wavelength sib txawv ntau dua 2-3 nanometers, tib neeg lub qhov muag tuaj yeem paub qhov txawv xim, tab sis qhov rhiab heev ntawm tib neeg lub qhov muag rau cov xim sib txawv tseem txawv, thiab qhov sib txawv wavelength uas tib neeg lub qhov muag pom tau. rau cov xim sib txawv tsis yog tsau.
Los ntawm qhov kev xav ntawm kev hloov pauv ntawm qhov ci thiab xim los ntawm tib neeg lub qhov muag, LED cov ntxaij vab tshaus yuav tsum tswj qhov sib txawv ntawm qhov ci thiab xim nyob rau hauv qhov ntau uas tib neeg lub qhov muag tsis tuaj yeem pom, kom tib neeg lub qhov muag tuaj yeem hnov zoo sib xws hauv qhov ci thiab xim thaum saib cov ntxaij vab tshaus LED.Qhov ci ntsa iab thiab xim ntau ntawm LED ntim khoom lossis LED chips siv hauv LED cov ntxaij vab tshaus muaj qhov cuam tshuam loj rau qhov sib xws ntawm cov zaub.
Ib feem.3
Thaum ua cov ntxaij vab tshaus LED, LED ntim cov khoom siv nrog lub teeb ci thiab lub teeb nyob hauv ib qho kev xaiv tuaj yeem xaiv.Piv txwv li, LED cov khoom siv nrog qhov ci ci nyob rau hauv 10% -20% thiab wavelength range hauv 3 nanometers tuaj yeem xaiv rau ntau lawm.
Xaiv cov khoom siv LED nrog qhov nqaim ntawm qhov ci thiab qhov ntev tuaj yeem ua kom ntseeg tau qhov sib xws ntawm lub vijtsam zaub thiab ua tiav cov txiaj ntsig zoo.
Txawm li cas los xij, qhov ci ntsa iab thiab qhov ntev ntawm cov khoom ntim LED feem ntau siv hauv cov ntxaij vab tshaus LED yuav loj dua li qhov zoo tshaj plaws uas tau hais los saum no, uas yuav ua rau muaj qhov sib txawv ntawm qhov ci thiab xim ntawm LED lub teeb-emitting chips pom rau tib neeg lub qhov muag. .
Lwm qhov xwm txheej yog COB ntim, txawm hais tias qhov ci ntsa iab thiab qhov ntev ntawm LED lub teeb-emitting chips tuaj yeem tswj tau nyob rau hauv qhov zoo tagnrho, nws kuj tuaj yeem ua rau qhov ci thiab xim tsis sib xws.
Txhawm rau daws qhov tsis sib xws hauv LED cov ntxaij vab tshaus thiab txhim kho cov duab zoo, taw tes los ntawm kev kho tshuab siv tau.
Taw tes los ntawm taw tes kho
Point by point kho yog tus txheej txheem ntawm kev sau brightness thiab chromaticity cov ntaub ntawv rau txhua sub pixel ntawm ib tugLED zaub screen, muab kev kho coefficients rau txhua lub hauv paus xim sub pixel, thiab pub lawv rov qab mus rau qhov kev tswj hwm ntawm qhov screen.Lub kaw lus tswj siv qhov kev kho coefficients los tsav qhov sib txawv ntawm txhua lub hauv paus xim sub pixel, yog li txhim kho qhov sib xws ntawm qhov ci thiab chromaticity thiab xim fidelity ntawm lub vijtsam zaub.
Cov ntsiab lus
Kev nkag siab ntawm kev hloov pauv ntawm qhov ci ci ntawm LED chips los ntawm tib neeg lub qhov muag qhia txog kev sib raug zoo uas tsis yog-linear nrog qhov tseeb qhov ci hloov ntawm LED chips.Qhov nkhaus no hu ua gamma nkhaus.Lub rhiab heev ntawm tib neeg lub qhov muag mus rau qhov sib txawv wavelengths ntawm cov xim yog txawv, thiab LED cov ntxaij vab tshaus muaj cov nyhuv zoo dua.Qhov ci ntsa iab thiab xim sib txawv ntawm lub vijtsam zaub yuav tsum tau tswj hwm nyob rau hauv ib thaj tsam uas tib neeg lub qhov muag tsis tuaj yeem paub, yog li cov ntxaij vab tshaus LED tuaj yeem pom qhov sib xws.
Lub ci ci thiab wavelength ntawm LED ntim khoom lossis COB ntim LED lub teeb-emitting chips muaj qee qhov ntau.Txhawm rau kom ntseeg tau qhov zoo sib xws ntawm LED cov ntxaij vab tshaus, taw tes los ntawm kev kho cov thev naus laus zis tuaj yeem siv los ua kom muaj qhov ci ntsa iab zoo ib yam thiab chromaticity ntawm cov ntxaij vab tshaus LED zoo thiab txhim kho cov duab zoo.
Post lub sij hawm: Mar-11-2024
