Cov vaj huam sib luag ntawm phab ntsa televisions yog tam sim no nyob rau hauv khw muag khoom txawb thiab hauv cov neeg siv khoom. LCD vaj huam sib luag rau phab ntsa televisions, nrog rau lawv cov nqi txo thiab cov kev txhim kho ua haujlwm yog qhov tseem ceeb heev rau cov qauv CRT. Txawm li cas los xij, ua ntej koj dhia hauv qhov tseeb "kev sib txuas lus zoo" nyob rau ntawm lub rooj LCD lub rooj sib tham hauv TV , muaj qee cov tswv yim pab rau kev saib xyuas seb yuav tsum nrhiav dab tsi thaum yuav ib lub TV LCD .
Nrhiav Ib Qhov Chaw Mus Muab Koj Lub TV Luam
Txij li cov LCD TVs yog nyias nyias, lawv tuaj yeem ua tau phab ntsa lossis cov lus qhia. Rau ib phab ntsa mounted LCD TV, tsis txhob muab tso rau hauv ib lub qhov txig hluav taws xob. Lub tshav kub los ntawm lub qhov cub yuav cuam tshuam rau kev ua tau zoo thiab qhov ntev ntawm lub teeb. Yog tias koj siv lub rooj qhia saum toj, coj ib txoj kab xev mus rau tus neeg muag khoom nrog koj kom koj paub tseeb tias tag nrho ntawm qhov teeb yuav haum rau hauv koj qhov chaw. Xyuas kom koj tawm ib lossis ob ntiv tes rau txhua sab, saum, thiab rov qab, rau qhov cua nkag thiab kev nkag mus.
- Dab tsi yog qhov LCD TV?
- Dab tsi yog qhov sib txawv ntawm kev LCD TV thiab lub TV ntshav?
- Qhov tseeb txog LED TVs
Haum Pixel Resolution
Teeb pij tawj hauv vaj huam sib luag muaj pixels ntawm cov vijtsam npo. Lub ntsiab yog kom tau raws li siab ib haiv neeg pixel suav tau. Feem ntau LCD TVs 23-nti thiab nyob rau hauv kev tshuaj ntsuam me me muaj tsawg kawg yog 1280 x 720 (720p) los yog 1366x768 (768p) pixel daws teeb meem. Cov no yog qhov tsawg kawg nkaus pixel suav koj yuav tsum tau saib nyob rau hauv ib lub LCD TV.
Tsis tas li ntawd, feem ntau qhov loj screen LCD TVs (tshwj xeeb tshaj yog cov 40-nti thiab loj dua) tam sim no muaj 1920 x 1080 (1080p) los yog 3840 x 2160 (4K) pixel daws teeb meem, uas yog ntau dua ntshaw, tshwj xeeb tshaj yog tias koj muaj, lossis npaj yuav muas Blu- Ray Disc los yog Ultra HD Disc player.
Scaling
Scaling yog tus txheej txheem uas lub TV video ua tus yees yuav phim cov kev daws teebmeem los ntawm nws cov pixel daws teeb meem. Qhov no txhais tau hais tias qhov teeb meem kev daws teeb meem yuav raug tshaj tawm, tiam sis tus neeg ua haujlwm yuav ua rau cov kev daws teeb meem loj dua qub kom lawv tuaj yeem pom tshwm sim nyob rau hauv TVs.
Kev nplhaib tsis zoo yuav ua rau cov khoom artifacts, xws li cov npoo tawv thiab cov lus tsis sib haum. Nws yuav tsum raug sau tseg tias cov ntsiab lus tseem ceeb nyob ntawm seb qhov teeb meem zoo li cas.
Lub Sijhawm Lub Sijhawm Lub Sij Hawm
Lub peev xwm ua rau LCD TV los tso saib cov khoom txav ceev tau, yav dhau los, ua tau tsis muaj zog ntawm LCD technology. Txawm li cas los xij, qhov no tau ua kom zoo dua. Qhov no tsis txhais hais tias tag nrho LCD TVs yog tsim muaj sib luag nyob rau hauv cheeb tsam no.
Xyuas cov lus qhia rau lub sij hawm Motion Response Time (ms = milliseconds). Tus zoo LCD TV tam sim no yuav tsum muaj Lub Sij Hawm Teb ntawm 8 xuaj moos los yog 4 xuaj moos, nrog 4ms zoo tshaj plaws, tshwj xeeb tshaj yog tias koj saib ntau yam kev ua si lossis kev ua yeeb yam. Yuav tsum ceev faj txog LCD TVs uas tsis teev lawv lub sijhawm teb.
Lwm qhov tseem ceeb uas ntxiv tau kev pab txhawb rau lub sijhawm teb yog Screen Refresh Rate.
Qhov Siab Tshaj Plaws
Qhov sib txig, lossis qhov kev hloov ntawm qhov sib txawv thiab qhov tsaus ntuj nti ntawm daim duab, yog qhov tseemceeb uas yuav tsum nco ntsoov. Yog tias lub LCD TV muaj qhov sib txawv ntawm qhov sib txawv, cov duab tsaus nti yuav pom nkos thiab txho, thaum lub teeb pom kev zoo yuav pib ntxuav.
Tsis tas li ntawd, tsis txhob tau seduced los ntawm Contrast Ratio marketing hype. Thaum kuaj cov lej sib piv sib piv, nrhiav Native, Static, los yog ANSI qhov sib txawv, tsis Dynamic lossis Full On / Full Off contrast. ANSI sib piv nruab nrab yog qhov sib txawv ntawm cov xim dub thiab dawb thaum ob leeg nyob rau ntawm qhov kev tshuaj ntsuam tib lub sijhawm. Dynamic lossis Full ON / OFF sib txawv tsuas yog ntsuas dub ntawm nws tus kheej thiab dawb ntawm nws tus kheej.
- Qhov Kev Ua Siab Tshaj Tawm Txog Kev Tshaj Tawm
Lub teeb Tawm thiab Brightness
Tsis muaj cov zis txaus tso tawm (ntsuas hauv cov qe ntshauv), qhov ci ntsa iab ntawm koj tus duab TV yuav pom nkas lauj thiab muag, txawm hauv chav tsaus nti. Tsis tas li ntawd, saib qhov nrug , qhov loj me, thiab chav teeb ci ntsa iab yuav cuam tshuam ntau npaum li cas koj lub TV yuav tsum tau muab tso tawm kom muaj kev txaus siab rau cov duab.
Saib Lub Thev Pom
Xyuas kom koj saib tau cov duab hauv LCD TV los ntawm ob sab nraud thiab cov ntawm thaj chaw saib xyuas thaj chaw. LCD TVs feem ntau muaj ib sab zoo rau sab nraud, muaj coob leej ntau txog 160 Degrees, lossis txog 80 degrees los ntawm qhov chaw zov qhov chaw.
Yog tias koj pom tias daim duab pib ploj los yog ua neeg tsis pom kev tsis dhau 45 degrees ntawm ob sab ntawm qhov chaw zov qhov chaw, ces nws yuav tsis yog qhov zoo xaiv qhov koj muaj ib pawg coob ntawm cov neeg saib tau zaum ntawm ntau qhov chaw hauv chav.
Tuner thiab Kev Sib Txuas Kev Sib Txuas
Yuav luag tag nrho cov LCD-TVs tam sim no muaj ob qho tib si built-in NTSC thiab ATSC tuners. Ib qho ATSC tuner yuav tsum tau txais tshaj tawm hauv TV tshaj tawm tom qab Lub Rau Hli 12, 2009. Tsis tas li, qee qhov LCD TVs muaj qhov hu ua "QAM tuner". Ib tus tuner QAM yog dab tsi uas yuav tsum tau txais qhov kev pab cuam HD-Cable uas tsis muaj qhov khoos kas uas tsis muaj lub thev hlua cable (qhov no muaj peev xwm ua tau ntau dua li cov tshuab kab hluav taws sib txig ntau dua.
Tsis tas li, LCD TV koj yuav tsum muaj tsawg kawg yog ib lub tswv yim HDMI rau kev sib txuas ntawm HD qhov chaw , xws li HD-cable lossis satellite thawv, Upscaling DVD lossis Blu-Ray Disc player .