Tsis ntev los no, kinescope TVs yuav luag ploj zuj zus rau hauv kev ua yuam kev - lawv tsis pom nyob hauv khw muag khoom hluav taws xob, tshwj tsis yog hauv qee lub tsev. Tab sis nyias nyias, vos TVs tsis xam tias yog ib qho khoom kim heev nyob rau txhua qhov thiab siv txhua qhov, thiab cov qauv tshiab nrog advanced technologies yog tsim txhua xyoo. Yog li ntawd, cov neeg yuav khoom lag luam feem ntau pom tias nws nyuaj rau txiav txim siab rau qhov kawg xaiv "Blue screen" ntawm cov khoom siv ntau tshaj. Peb yuav qhia koj txog LED TV thiab nws cov txiaj ntsig.
Lub tshuab LED yog dab tsi?
Feem ntau LED yog ib qho lus hais ua lus Askiv, uas txhais tau tias "lub teeb-emitting diode". Cov kab lus yog txhais ua lus Askiv tsuas - LED. Thiab yog tias peb tham txog nws txhais li cas LED TV, ces qhov tseeb nws tuaj yeem raug hu ua tus LCD TV siab heev.
Nws paub tias LC yog ib lub tshuab raws li kev siv cov kua siv lead ua kua. Cov yav tas muaj ob daim phiaj, ntawm cov khoom uas muab tso ua kua dej. Thaum siv fais fab tam sim no, lawv pib txav mus los. Tab sis ua tsaug rau cov teeb pom kev zoo ntawm lub teeb ntom ntawm sab nrauv tuaj yeem tsaus thiab lub teeb me ntsis. Thiab xim cov ntxaij lim dej, nyob tom qab hauv daim duab, ua xim xim ntawm qhov screen.
Hais txog dab tsi LED qhov teeb pom kev zoo, ces muaj coob tus LEDs siv raws li lub teeb ci (tsis zoo li lub LCD backlight, qhov chaw txias cathode fluorescent yaj siv).
Yog li, txoj cai ntawm kev lag luam ntawm LED TV yog raws li qhov kev teeb pom kev ntawm cov kua nplaum ntawm lub cim ntawm cov LEDs.
Qhov zoo thiab qhov tsis zoo ntawm LED TVs
TVs nrog LED technology muaj ntau yam zoo. Tej zaum, qhov zoo tshaj plaws yog txo kev siv hluav taws xob: raws li kws txawj, txog li 40% piv rau LCD ntsuas, uas qhov kev lag luam yog nqa los ntawm lub teeb pom kev zoo.
Tsis tas li ntawd, lub LED saib yoojyim ua tau rau hauv ib qho chaw thaij - LEDs muaj peev xwm tsim muaj kev ntsuas txog 3-3.5 cm tuab, vim qhov tseeb cov LEDs yog qhov me me. Thiab, qhov no tsis yog qhov txwv. Los ntawm txoj kev, muaj qhov sib txawv ntawm qhov kev npaj ntawm cov LEDs hauv LED TVs, nyob rau hauv uas lub thickness ntawm qhov hauv matrix nyob. Nyob rau hauv cov ntaub ntawv thaum lawv raug muab tso rau hauv qab ntawm lub TV vaj huam sib luag, lawv hais ntawm Direct LED. Tsaug rau qhov no, qhov screen illumination yog ntsuas tawm tusyees. Muaj tseeb koj twb tau hnov txog qhov tsis tshua muaj nyias Edge LED TVs. Raws li qhov Edge LED backlight yog, qhov kev sib txuas ntawm cov LEDs ncig lub perimeter ntawm qhov screen nrog simultaneous siv ntawm lub vaj huam sib luag tawg. Vim qhov no, qhov dav dav dav dav yog qhov thinned - tsawg dua 3 cm! Los ntawm txoj kev, nyob rau hauv electronics khw muag khoom feem ntau nyob rau hauv lub designations ntawm cov qauv muaj Slim LED - yog dab tsi? Qhov kev tshaj lag luam ntawm TVs nrog qhov tsawg tuab ntawm lub cev yog 22.3 hli. Feem ntau yog cov qauv ua tsis pom zoo xws li tus qauv paub puag ncig ntawm qhov screen, tab sis hauv kev muaj tiag nws yog nyob hauv qhov screen iav.
Ib qhov kev zoo ntawm LED TVs tuaj yeem raug hu thiab zoo duab zoo. Los ntawm qhov kev siv ntawm
Lub ntsiab drawback ntawm LED TVs yog nws cov nqi siab hauv qhov piv ntawm cov TV nrog lwm hom teeb pom kev zoo. Txawm li cas los xij, nws ntseeg tau tias raws li kev siv technology zoo dua, kev tsim cov TV uas muaj teeb meem nrog LED rov qab yuav coj tus cwj pwm loj, thiab yog li ntawd tus nqi yuav maj mam poob.