Daim ntawv thov ntawm Backlight Module hauv Liquid Crystal Display

Hauv kev siv cov khoom siv dav dav, txhawm rau txo cov nqi thiab txhim kho kev ua tau zoo, qhov chaw teeb pom kev zoo thiab nws lub voj voog tsav tsheb, cov yeeb yaj kiab kho qhov muag rau kev txhim kho kho qhov muag, thiab lwm yam khoom siv ntxiv feem ntau yog muab tso rau hauv cov khoom siv uas tuaj yeem siv ncaj qha nrog cov kua siv lead ua kua, uas yog, lub backlight module. Lub backlight module yog ib qho tseem ceeb ntawm cov khoom siv ua kua siv lead ua kua, thiab nws kuj yog ib qho tseem ceeb uas cuam tshuam rau cov zaub zoo thiab kev ua haujlwm ntawm cov kua siv lead ua kua.

Muaj peb hom kev teeb pom kev zoo rau cov teeb pom kev zoo: Cold Cathode Fluorescent Lamps (CCFL), Electroluminescence (EL), thiab Lub Teeb Emitting Diode (LED). Ua ntej xyoo 2008, CCFL yog lub ntsiab teeb pom kev zoo rau cov teeb pom kev zoo. CCFL muaj qhov zoo ntawm qhov ci ci, lub neej ua haujlwm ntev thiab tus nqi qis. Txawm li cas los xij, CCFL kuj tseem muaj qhov tsis zoo xws li cov xim tsis muaj xim gamut, cov xim tsis zoo, thiab kev siv hluav taws xob siab. Tsis tas li ntawd, CCFL nws tus kheej muaj mercury, uas tsis tsim nyog rau kev tiv thaiv ib puag ncig, yog li txwv kev txhim kho ntxiv ntawm LCD rau qee yam. Tom qab xyoo 2008, nrog kev loj hlob ntawm lub teeb dawb LED thev naus laus zis, LED backlight qhov chaw nrog lub teeb pom kev zoo, muaj peev xwm ua kom muaj xim siab, lub neej ntev, xim dav gamut, tsis muaj txhuas thiab mercury-dawb, tsis tshua muaj hluav taws xob tsav, siab teb ceev, zoo ib yam. Lub teeb qhov chaw, qhov zoo ntawm kev cog lus thiab tsis sib haum xeeb tau pib tshwm sim, thiab tau dhau los ua cov kev daws teeb meem zoo tshaj plaws rau tiam tom ntej ntawm ntsuab zaub technology.

Raws li qhov chaw sib txawv ntawm qhov chaw teeb pom kev zoo hauv lub module, LED backlight module tuaj yeem muab faib ua ob hom: ncaj qha (Direct-Type) thiab ntug-hom (Edge-Type). Nyob rau hauv lub ntug-lit backlight module, ib tug ntau ntawm LED teeb qhov chaw yog teem nyob rau sab ntawm lub module, thiab ib tug uniform lub teeb-emitting nto yog tsim los ntawm lub teeb qhia phaj, ib tug reflective zaj duab xis, thiab ib tug diffuser zaj duab xis. Nyob rau hauv hom ncaj qha LED backlight module, LED array yog tusyees faib nyob rau hauv lub LCD zaub vaj huam sib luag, thiab ua ke cov nyhuv ntawm lub reflective kab noj hniav thiab diffusion zaj duab xis, thiab lwm yam., yuav tau txais ib tug ca luminous nyhuv nrog uniform brightness.

Piv nrog rau ob lub thev naus laus zis, hom ntug teeb tuaj yeem txuag tau ntau dua cov khoom siv LED, thiab txij li cov LEDs nyob rau hauv lub teeb pom kev zoo yog teem rau ntawm sab, tag nrho cov tuab ntawm LCD tuaj yeem nyias nyias, tab sis cov qauv ntug teeb. tsis haum rau super-loj LEDs. Backlight module, thiab nws yog ib qho nyuaj rau kev siv thaiv qhov ci hloov kho nyob rau hauv qhov kev daws teeb meem ntawm ntug teeb, uas ua rau kev txi ntawm qhov sib piv thiab xim saturation ntawm daim duab; thaum lub teeb pom kev ncaj qha LED backlight module tsis tas yuav siv lub teeb qhia lub phaj, thiab ncaj qha ncaj qha teeb tsa hauv qab ntawm lub module. Lub teeb pom kev zoo ntawm LED yog pub dawb los sib xyaw lub teeb nyob rau hauv ib qho chaw, thiab tom qab ntawd tawm mus rau qhov chaw ntawm lub module, uas tuaj yeem daws tau qhov tsis zoo ntawm ntug-hom LED backlight module hauv qhov loj loj.