LCD TVs tau nyob ib puag ncig ntev. Lub thev naus laus zis ntawm lawv cov khoom tsim tau tas li txhim kho, qhov ntau thiab tsawg ntawm cov ntxaij vab tshaus nce ntxiv thiab ntau dua. Tab sis yog tias ntxov dhau los hauv kev tsim cov tshuaj tiv thaiv LCD matrices LCD thev naus laus zis tau siv, tam sim no ib qho kev nce ntawm kev lag luam yog khij TVs nrog cov ntxaij vab tshaus LED
Cov yeeb yaj kiab ntawm cov kua siv lead ua kua yog tias lawv xav tau lub teeb nrig rov qab los ua haujlwm - uas yog, lub teeb ci nyob rau sab nraub qaum. Yog tias tsis muaj qhov backlight, tsis muaj dab tsi tuaj yeem pom ntawm lub vijtsam. Qee zaum lub teeb pom kev tsis ua tiav - qhov no, lub vijtsam tsaus, tab sis yog tias koj taws teeb lub teeb ntawm nws, koj tuaj yeem pom cov duab tsaus muag.
LCD-backlit TVs siv tshwj xeeb teeb roj fluorescent, uas nyob rau hauv lawv txoj haujlwm ntawm kev ua haujlwm tsis txawv ntawm lub teeb roj fluorescent zoo tib yam. Thiab lawv muaj tib qho tsis zoo - xws li lub teeb hluav taws tuaj yeem hlawv tawm, uas yuav xav tau nws hloov chaw. Lwm qhov tsis zoo ntawm cov ntxaij backlit los ntawm cov roj fluorescent yog tsis pom kev tsis pom kev - cov tuam ntxhab tsis tuaj yeem ua tiav cov teeb xim sib txawv ntawm tag nrho cheeb tsam npo. Muaj tseeb, qhov no feem ntau tsis tshua pom ntawm lub qhov muag, tab sis tus neeg paub dhau los tuaj yeem paub qhov txawv tsis pom tseeb.
Tias yog vim li cas LED technology tau hloov LCD backlighting. Thaum siv nws, lub backlight ntawm cov kua siv lead ua kua matrix yog nqa tawm siv LEDs. Qhov zoo ntawm cov thev naus laus zis tuaj yeem ua qhov tsis yooj yim, ntawm cov qhov tseem ceeb yog cov teeb pom kev zoo nkauj, tsis tshua muaj zog noj thiab muaj peev txheej ntau ntawm kev ua haujlwm. Ib lub TV nrog LED screen yog qhov zoo dua rau xa mus rau qhov rov ua dua vim qhov tsis nco qab dua li vim muaj qhov tsis zoo ntawm lub teeb nrig. Xws li lub vijtsam tsis muaj qhov ntsuas hluav taws xob siab uas yuav tsum tau siv rau kev ua si LCD backlight, uas yooj yim ua rau nws cov qauv tsim muaj.
Tau kawg, LED thev naus laus zis nws muaj yam tsis zoo li. Ntau qhov tseeb, qhov tsis zoo yog qhov siab dua tus nqi ntawm cov ntxaij. Cov LED tseem kim heev rau kev tsim cov khoom lag luam, tab sis cov thev naus laus zis tshiab hloov maj mam hloov cov qub. TVs raws nws yog ntau qhov kev ntseeg tau, muaj kev lag luam ntau dua, muaj cov duab zoo dua, uas thawb cov tuam txhab tsim kom hloov mus rau LEDs tag.
LED tshuab tseem tabtom mus rau tom ntej. Yog tias thaum xub thawj peb siv sab teeb pom kev nrog cov LEDs dawb, tam sim no muaj cov ntxaij nrog LEDs ntawm peb xim - liab, xiav thiab ntsuab (RGB-backlighting). Lawv nyob tom qab lub vijtsam thiab tig rau lub sijhawm yog raws li xim ntawm daim duab. Daim duab nyob rau hauv TV zoo li ci thiab muaj kua.
