Lub teeb tsis tshua muaj hluav taws xob hu ua lub teeb pom kev zoo ntawm LED vaj huam sib luag siv lub tiaj tus LED module xa lub teeb ncaj qha los ntawm qhov pom qhov muag pom. Qhov tsis zoo ntawm cov khoom ntug teeb yog npaj los daws los ntawm qhov kev npaj no.
LED vaj huam sib luag teeb nrog cov npoo illuminated muaj ntau yam ua tau zoo. Cov khoom siv hluav taws xob saum npoo av no muaj peev xwm tsim cov teeb pom kev zoo sib xws, maj mam teeb pom kev thoob plaws lub teeb emission tiav. (LES). Lub teeb qhia vaj huam sib luag (LGP) yog siv nyob rau hauv ntug-lit thev naus laus zis kom sib npaug sib kis thiab coj cov teeb pom kev zoo uas cov hluav taws xob sab tua hluav taws xob emanate downward. Kev siv ntawm LGP nthuav tawm qhov teeb meem kev cia siab txawm tias qhov kev tsim kho hauv av-tawg-lit LED tso cai rau lub teeb pom kev zoo sib xws thiab tsis tshua muaj profile tsim.
LGPs muaj li ntawm polymethyl methacrylate (PMMA) los yog styrofoam yog siv nyob rau hauv feem ntau ntug-lit LED cov ntxaij vab tshaus. (PS). Piv rau LGPs tsim los ntawm cov yas, cov LGPs no tsis tshua kim. (PC). PMMA thiab PS LGPs, txawm li cas los xij, muaj qhov ntsuas kub tsis zoo. Nyob rau tib lub sij hawm, lawv yuav pib noticeably discolor. Hauv kev sib piv rau PMMA thiab PS polymers, polycarbonate muaj qhov ntsuas kub zoo dua, uas ua rau muaj xim ntau dua rau kev siv lub teeb pom kev zoo. Txawm li cas los xij, vim tias tus nqi siab, PC polymers tsis tshua muaj siv nyob rau hauv ntug-lit LED li.
Ntxiv rau qhov muaj lub neej luv luv thaum raug hluav taws xob thaum kub kub, cov polymers LGPs kuj deteriorate nyob rau hauv txuas ntxiv, khaus UV raug thiab undergo xim hloov thaum raug accumulating ntub dej. Lub ntug-lit LED vaj huam sib luag teeb yuav nquag ua tsis zoo vim yog tag nrho cov kev hloov pauv hauv qhov pom ntawm LGPs.
Siab pom kev ruaj ntseg thiab tus nqi yog qhov khoom plig zoo ntawm backlit LED vaj huam sib luag teeb. Qhov cuam tshuam ntawm ntug-lit optical tsim yog hais thaum cov khoom suav txo qis los ntawm qhov tsis muaj LGPs. Yog tias tsis muaj lub teeb ci ntau lawm, qhov tsim teeb pom kev zoo kuj tseem txo qis kev siv SMD LEDs. Qhov teeb meem ib txwm muaj nrog tus tsim teeb pom kev zoo yog qhov yuav tsum tau ua kom tuab tuab kom tshem tau cov LEDs 'qhov pom tseeb ntawm qhov kub. Txij li thaum kho qhov muag diffusion thev naus laus zis tau dhau los, ultra-thin backlight systems uas ua raws li kev ua haujlwm kho qhov muag ntawm ntug-lit systems tam sim no ua tau.
