Cov xim puv xim LED tau nce siab los ntawm kev ua lag luam vim lawv qhov ci ntsa iab zoo thiab kev ua haujlwm xim, nrog rau cov duab tsis sib haum xeeb. Txawm li cas los xij, hauv qee lub nroog, teeb meem xws li lub teeb ci siab ntawm LED cov ntxaij vab tshaus tau cuam tshuam rau lub neej ntawm cov neeg nyob ib puag ncig thiab kev khiav tsheb. Yuav ua li cas kho qhov ci thiab xim ntawm LED zaub, ntawm no yog qee cov lus qhia los ntawm tus editor ntawm Winbond Ying Optoelectronics.
Full xim coj zaub
Kev xaiv thawj xim wavelength
LED cov ntxaij vab tshaus yog dav siv nyob rau hauv ntau yam kev lag luam, thiab cov chaw sib txawv ntawm daim ntawv thov muaj cov kev cai sib txawv rau lub wavelength ntawm thawj xim ntawm LED. Qee qhov wavelengths ntawm thawj xim ntawm LED raug xaiv kom ua tiav qhov pom kev zoo, thiab qee qhov yog ua kom tau raws li cov neeg xav tau. Cov cwj pwm, thiab qee qhov tau tswj hwm ntau dua los ntawm cov qauv kev lag luam, cov qauv hauv tebchaws thiab txawm tias cov qauv thoob ntiaj teb. Piv txwv li, qhov kev xaiv ntawm lub wavelength ntawm thawj xim ntawm lub raj ntsuab nyob rau hauv ib tug tag nrho-xim LED zaub; Thaum ntxov, tib neeg feem ntau siv lub teeb daj-ntsuab LED nrog lub wavelength ntawm 570nm. Txawm hais tias tus nqi qis dua, cov xim gamut ntawm cov zaub me me, cov xim luam tawm tsis zoo, thiab qhov ci ntsa iab tsawg. Tom qab xaiv lub raj ntshiab ntsuab nrog lub wavelength ntawm 525nm, cov xim gamut ntawm lub vijtsam zaub tau ze li ob npaug, thiab cov xim luam tawm tau zoo heev, uas ua rau muaj txiaj ntsig zoo ntawm cov duab ntawm lub vijtsam. Piv txwv li, nyob rau hauv lub khw muag khoom zaub screen, tib neeg feem ntau accustomed mus rau siv liab los qhia cov nqi nce, ntsuab los qhia cov nqi Tshuag poob, thiab $ los qhia tus nqi tiaj tus. Hauv kev lag luam tsheb thauj mus los, cov qauv hauv tebchaws tau nruj me ntsis hais tias cov kab xiav thiab ntsuab yog kev khiav tsheb, thiab cov kab liab raug txwv. Yog li ntawd, kev xaiv lub wavelength ntawm thawj xim yog ib qho tseem ceeb ntawm LED zaub.
Full xim coj zaub
Kho qhov ci ci
1. Modulate lub mem tes dav, siv qhov zaus ntawm qhov kev hloov pauv uas tib neeg lub qhov muag tuaj yeem hnov, thiab siv lub pulse width modulation method kom ua tiav greyscale tswj, uas yog, ncua sij hawm hloov lub teeb mem tes dav. Pulse width modulation yog tsim nyog rau kev tswj digital thiab tau siv dav. Txoj hauv kev zoo tshaj plaws yog siv lub microcomputer. Tam sim no, yuav luag tag nrho cov teeb pom kev LED tau txais kev hloov pauv dav dav los tswj cov qib grey.
2. Ordinary LED raj tso cai rau kev ua haujlwm txuas ntxiv tam sim no txog 20 mA. Los ntawm kev hloov cov tam sim no ntws los ntawm LED, tshwj tsis yog rau qhov saturation ntawm cov liab LED, qhov ci ntsa iab ntawm cov LEDs ntxiv yog qhov sib piv rau qhov tam sim no ntws.
Kev hloov kho ntawm thaj chaw dawb xim ua haujlwm
Dawb teb xim kev tswj hwm kev hloov kho yog ib qho ntawm cov thev naus laus zis tshaj plaws rau cov xim puv xim LED. Txawm li cas los xij, nyob rau hauv nruab nrab -1990s, vim tsis muaj cov qauv kev lag luam thiab cov qauv kev sim yooj yim, cov xim dawb ntawm thaj chaw sib koom tes feem ntau yog txiav txim siab los ntawm tib neeg lub qhov muag thiab kev xav, ua rau muaj xim loj thiab randomness ntawm cov xim dawb xim kub. . Nrog rau kev tshaj tawm ntawm cov qauv kev lag luam thiab kev ua tiav ntawm txoj kev sim, ntau lub tuam txhab tau pib tsim cov txheej txheem xim sib xws rau cov xim puv xim. Txawm li cas los xij, vim tsis muaj kev taw qhia theoretical rau cov xim sib xws, qee cov tuam txhab lag luam feem ntau txi cov qib grey ntawm qee cov xim thawj los kho cov 100- teb cov xim sib koom ua ke, thiab kev ua haujlwm tag nrho tsis tuaj yeem txhim kho.
Kev kho xim
Lub high-txhais LED zaub yog tso tawm raws li lub hauv paus ntsiab lus ntawm peb lub ntsiab xim ntawm lub teeb. Kev txiav txim siab ib qho ntawm cov xim liab, ntsuab, thiab xiav raws li qhov kev siv yog feem ntau raws li qhov sib txawv ci ci ntawm cov xim liab, ntsuab, thiab xiav xim ntawm cov khoom xaiv. Feem ntau, qhov ci ci siv yog ib qho uas tsis muaj qhov ci ci. Thaum lub siab tshaj plaws brightness tau mus txog, rau ib tug ob-xim LED zaub, lwm yam xim yuav tsum tau hloov, thiab rau ib tug tag nrho-xim LED zaub, cov xim ntawm lwm yam ob LEDs yuav tsum tau kho.
