LCD LED Backlight Board tuaj yeem faib ua ob peb pawg?
Feb 22, 2023
Lub vaj huam sib luag backlight yog ib qho khoom siv kho qhov muag uas muab cov teeb pom kev zoo hauv cov khoom siv LCD. Txij li thaum lub LCD iav nws tus kheej tsis muaj lub teeb-emitting yam ntxwv, lub teeb-emitting qhov chaw yuav muab ntxiv tom qab lub LCD iav raws li xav tau, piv txwv li, ib tug backlight vaj huam sib luag. Cov ntawv thov suav nrog kev kho mob, kev zoo nkauj, kev ntsuas, cov khoom siv tsheb, cov cuab yeej siv hauv tuam txhab, chaw ua haujlwm automation, kev sib txuas lus, cov khoom ua si hluav taws xob, cov khoom siv.
1, LCD LED backlight board ua hauj lwm hauv paus ntsiab lus LED backlight board ua hauj lwm txoj cai yog qhov taw tes lub teeb qhov chaw (LED) rau hauv ib lub teeb qhov chaw (backlight board, backlight)
2, LCD LED backlight vaj huam sib luag kev faib tawm. Backlight vaj huam sib luag tam sim no tau muab faib ua EL, CCFL, LED raws li hom teeb pom kev zoo, raws li qhov chaw ntawm lub teeb qhov chaw faib khoom faib rau sab teeb hom thiab hom ncaj nraim (hom backlight hauv qab).
Cov hauv qab no yog cov lus qhia luv luv rau lawv - Sab Lub Teeb Hom: Backlight panels ua los ntawm kev teeb tsa ib kab lossis taw tes lub teeb ci ntawm sab ntawm lub teeb qhia tshwj xeeb. Raws li kev siv tiag tiag ntawm kev xav tau, tuaj yeem ua rau ob sab lossis txawm tias hom trilateral. General ntug backlight tuaj yeem ua kom nyias nyias tab sis lub teeb pom kev siv lub teeb me me, qhov thinner qhov kev siv tsawg dua, txog 50%. Lub hauv paus ntawm kev siv tshuab yog tsim thiab tsim cov ntawv qhia lub teeb. Edge lub teeb hom feem ntau siv hauv LED backlight thiab CCFL backlight
LED backlight: LED teeb tseem hu ua lub teeb-emitting diodes. Piv nrog rau lwm qhov chaw teeb pom kev zoo, kev siv hluav taws xob ntawm ib lub teeb LED tsuas yog me me heev. Los ntawm xiav mus rau liab LED teeb muaj nyob rau hauv ntau yam xim, ib tug tshwj xeeb xim yog dawb, feem ntau siv chromaticity ntau yam yog qhia nyob rau hauv Table 3. nyob rau hauv ntau yam xim, yuav broadly faib ua ob hom siab brightness thiab tsawg brightness: lub hauv paus rooj 1 yog qhov ci ci qis (txawm hais tias amber, txiv kab ntxwv thiab liab kuj me ntsis ci dua).
Txij li cov xim dawb yog xim sib xyaw uas tsis muaj qhov pom tseeb wavelength tus nqi, nws yog sawv cev los ntawm nws tus nqi sib koom tes ntawm daim ntawv chromaticity. Peb kho lawv li "txias dawb" thiab "sov dawb". Ntau yam xim muaj qhov teeb meem ntawm chromatic aberration, nyob rau hauv uas xiav thiab dawb yog pom tseeb dua, tshwj xeeb tshaj yog dawb, tam sim no cov coj lwm tus neeg yuav tsis zoo tswj.
CCFL backlight: qhov zoo ntawm qhov teeb pom kev zoo no yog qhov ci ntsa iab, yog li siv rau thaj tsam loj dub thiab dawb theem tsis zoo, xiav hom tsis zoo theem thiab xim LCD. Txoj kev xav, nws tuaj yeem ua ntau yam xim raws li cov xim sib piv ntawm peb lub ntsiab xim. Qhov tsis zoo yog kev siv hluav taws xob siab, lub zog hluav taws xob hloov hluav taws xob, kev ua haujlwm nqaim ntawm 0-60 degrees, thaum lwm lub teeb pom kev zoo xws li LED tuaj yeem ncav cuag -20-70 degrees.
Hauv qab hom teeb pom kev zoo: yog lub teeb ci ntsa iab nrog cov qauv, tuaj yeem ua lub teeb pom kev tsis sib xws, xws li e1 lossis lub teeb fluorescent tiaj tus, nws tuaj yeem tsim los ntawm ntau qhov chaw teeb pom kev zoo, xws li dot matrix LED lossis incandescent vaj huam sib luag backlight. Feem ntau siv yog LED dot matrix thiab EL backlight.
EL backlight: Electroluminescence, lub teeb txias qhov chaw uas emits lub teeb los ntawm intrinsic luminescence ntawm phosphors txaus siab los ntawm ib tug alternating hluav taws xob teb. Nws qhov zoo dua yog nyias, tuaj yeem yog {{0}}.2 ~ 0.6 hli tuab. Qhov tsis zoo yog qhov ci ntsa iab, lub neej luv luv (feem ntau 3000 ~ 5000 teev), inverter tsav, cuam tshuam hauv Circuit Court, flicker thiab nrov nrov. Electroluminescence yog tsav los ntawm inverter thiab tsav IC. Tam sim no, qhov zaus thiab cov zis tawm hluav taws xob ntawm tus tsav tsheb IC tsis tuaj yeem ua tau raws li cov xwm txheej ntawm electroluminescence (400 Hz, 100 V AC), yog li qhov ci ntsa iab qis dua qhov uas tau tsav los ntawm inverter. Lub teeb dawb (xim tag nrho) EL thiab LCD backlight panels tau tshwm sim ib zaug. Txawm li cas los xij, vim lawv qhov ci tsaus nti, lawv tau siv rau cov LCDs me me hauv qab 4 ntiv tes. Piv txwv li, cov xov tooj ntawm tes, khoos phis tawj tes, game consoles, thiab lwm yam. Cov xim puv (dawb), qhov loj loj brightness backlight vaj huam sib luag, tam sim no lub ntsiab los yog siv CCFL raws li lub teeb ci LED hauv qab backlight: nws qhov zoo dua yog qhov ci zoo, zoo uniformity. Qhov tsis zoo yog tias lub thickness loj dua (ntau tshaj 4.0mm), kev siv ntau dua ntawm cov coj, qhov tshwm sim thaum tshav kub kub yog pom tseeb. Feem ntau siv cov xim tsis tshua muaj xim rau kev tsim, xim ci ntsa iab vim tus nqi siab yog qhov tseem ceeb tsis quav ntsej.
