Muaj ntau hom Laptop Zaub Backlight
Jan 04, 2022
Lub npov phau ntawv yog tam sim no TFT-LCD backlight module tsim los ntawm cov kua siv lead ua vaj huam sib luag thiab lub teeb rov qab, uas feem ntau muaj ob lub teeb ci, CCFL thiab LED. Sib piv ntawm CCFL thiab LED, LED yog DC thiab tsawg-voltage; thaum CCFL yog high-voltage (600 volts). Tau kawg, cheeb tsam me me CCFLs kuj muaj qhov hluav taws xob tsawg, tab sis feem ntau muaj 300-400 volts lossis ntau dua. Lub teeb ci ntawm LED tuaj yeem faib dawb raws li qhov loj thiab daim ntawv thov. CCFL kuj tau kho, nws xav tau ntau cov ntaub ntawv nthuav dav kom ua tiav lub teeb tawg, txhawm rau ua kom lub teeb ci sib xws raws li qhov xav tau.
Los ntawm qhov kev xav ntawm kev txuas ntxiv, (a) cov xim gamut ntawm LED yog dav dua, thiab cov xim saturation tuaj yeem ntau dua 105%, thaum CCFL kuj nqaim, feem ntau tsuas yog ua tiav li ntawm 70%; (b) LED' s Qhov ceev ceev heev, uas tuaj yeem pab LCD kom tshem tawm qhov tshwm sim ntawm smearing; (c) Ib qho teeb meem loj ntawm LCD yog qhov" dub screen" tsis yog dub. Yog tias siv LED dynamic tswj, qhov teeb meem no tuaj yeem daws tau zoo; (d) LED Tam sim no tuaj yeem hloov kho; (e) LED yog cov khoom tiv thaiv ib puag ncig ntsuab, tsis muaj mercury, yog lub teeb ci, muaj kev poob siab zoo, thiab muaj kev nyab xeeb nrog qis voltage. Yog li ntawd, LED yuav tau siv dav rau yav tom ntej.
Hais txog qhov teeb meem ntawm lub neej, txawm hais tias lub neej ntawm LED yog ntev heev, yog tias tus neeg siv overheats nws, nws tseem yuav ua rau lub neej poob qis. Tam sim no peb txais yuav ib txoj hauv kev zoo los tswj, kom lub neej ntawm LED tuaj yeem ua tau ntau tshaj 100,000 teev, raws li kev tsav tsheb Qhov sib txawv tuaj yeem ua tau raws li qhov xav tau sib txawv. CCFL feem ntau tsuas muaj lub neej ntev ntawm 20,000 txog 50,000 teev.
Nyob rau hauv cov nqe lus ntawm cov yam ntxwv ntawm CCFL thiab LED, lub breakdown voltage thiab ua hauj lwm voltage ntawm CCFL yog kuj siab, thaum lub voltage ntawm LED yog tsawg heev. Yog li kev nyab xeeb kev ua haujlwm ntawm LED yog qhov zoo heev.