Rau cov lus qhia LCD, lub teeb pom kev zoo ua haujlwm zoo li lub teeb loj, teeb pom kev zoo, teeb pom kev zoo ntawm LCD vaj huam sib luag thiab tso cai rau cov xim zoo nkauj tuaj yeem pom. Lub neej ntev ntawm lub teeb nraub qaum ncaj qha txiav txim siab seb lub vijtsam LCD puas tseem tuaj yeem pom meej "pom."
LCD backlight modules feem ntau tuaj hauv ob hom: ncaj qha -lit thiab ntug-lit. Txawm li cas los xij, lub teeb tseem ceeb - emitting element yog LED nti. Yog li ntawd, lub teeb lwj ntawm LED chips kuj tseem ceeb rau lub neej ntawm LCD backlight. Nrog kev siv ntau ntxiv, qhov ua tau zoo ntawm cov LEDs maj mam txo qis, ua rau txo qis ntawm tag nrho cov vijtsam ci.
Txawm li cas los xij, backlight lifespan nyob ntawm ntau dua li cov LEDs lawv tus kheej. Hauv ntug-lit backlight designs, LED strips tau teeb tsa ntawm cov npoo ntawm lub vijtsam, thiab lub teeb sib npaug sib npaug thoob plaws lub vijtsam ntawm lub teeb qhia lub phaj. Thaum qhov kev tsim no tso cai rau lub cev nyias nyias, nws kuj qhia txog cov teeb meem durability. Thaum tshav kub kub tshwm sim thaum lub sij hawm ntev - lub sij hawm ua hauj lwm sib sau ua ke ntawm cov npoo ntawm lub vijtsam thiab ntawm lub teeb qhia phaj, uas yuav ua rau lub teeb qhia phaj deform vim cua sov, los yog ua rau cov chips LED ntawm cov npoo mus rau hnub nyoog ntxov vim tsis muaj cua sov dissipation. Qhov no thaum kawg manifests li darkened screen edges, uneven brightness, los yog tag nrho backlight tsis ua hauj lwm.
Hauv qhov sib piv, ncaj qha -lit backlights faib cov LEDs sib npaug tom qab lub vijtsam, ua rau kom muaj cua sov zoo dua thiab feem ntau zoo dua lub neej thiab kev ntseeg tau. Tsis tas li ntawd, tus tsav tsheb circuitry powering lub backlight plays lub luag haujlwm tseem ceeb. Kev ua tsis tiav hauv cov khoom xws li capacitors thiab inductors nyob rau hauv lub voj voog no tuaj yeem ua rau lub teeb rov qab flicker lossis tua tag nrho. Nyob rau hauv luv luv, lub lifespan ntawm ib tug LCD backlight yog txiav txim los ntawm kev ua ke lifespan ntawm lub LED teeb qhov chaw, optical cov ntaub ntawv (xws li lub teeb qhia daim hlau thiab diffusers), thiab tus tsav tsheb Circuit Court board.
