LCD TV vaj huam sib luag, nrog rau lawv cov nqi qis thiab kev txhim kho kev ua haujlwm, tam sim no yog hom tseem ceeb ntawm TV muag. Txawm li cas los xij, koj puas paub ntau npaum li cas txog cov TVs no, thiab cov no puas yog koj qhov kev xaiv? Cov lus qhia hauv qab no nthuav tawm qhov tseeb txog LCD TVs uas koj yuav tsum paub.
LCD TV yog dab tsi?
Ib qho LCD TV yog lub vaj huam sib luag tiaj tiaj uas siv tib lub LCD (kua siv lead ua kua) thev naus laus zis pom hauv cov xov tooj ntawm tes, lub koob yees duab saib, thiab lub computer saib.
LCD panels yog ua los ntawm ob txheej ntawm cov khoom zoo li iav, uas yog polarized thiab glued ua ke. Ib qho ntawm cov txheej yog coated nrog ib tug tshwj xeeb polymer uas tuav tus neeg ua kua muaju. Cov hluav taws xob tam sim no dhau los ntawm ib tus neeg siv lead ua, uas tso cai rau cov muaju hla lossis thaiv lub teeb los tsim cov duab.
LCDs muaju tsis tsim lub teeb. Ib qho teeb pom kev sab nraud, xws li fluorescent lossis LED qhov muag teev, xav tau rau cov duab tsim los ntawm LCD kom pom rau tus neeg saib.
LCD TVs tuaj yeem ua kom nyias nyias, tso cai rau lawv dai rau ntawm phab ntsa lossis muab tso rau ntawm qhov muag me me rau saum lub rooj, rooj, hnav khaub ncaws, lossis txee.
Nrog qee qhov kev hloov kho, LCD thev naus laus zis kuj tseem siv hauv cov yeeb yaj kiab video.
LCD TV thev naus laus zis yog kev daws teeb meem tsis txaus ntseeg. Hauv lwm lo lus, LCD TVs tuaj yeem tso saib ntau yam kev daws teeb meem, txij li 480p txog 8K, thiab, yav tom ntej, txawm tias siab dua nyob ntawm seb cov neeg tsim TV xav muab cov neeg siv khoom li cas.
Nws tseem ceeb heev uas yuav tsum nco ntsoov tias LCD TVs tso tawm cov duab nce ntxiv.
LCD thiab LED
Thaum yuav lub TV tshiab, koj yuav ntsib ntau lub TVs sau tias yog LED TVs.
Lub npe LED ntawm lub TV yog hais txog LCD TV lub teeb pom kev zoo, tsis yog cov chips uas tsim cov duab cov ntsiab lus. LED TVs tseem yog LCD TVs. Cov TVs no siv LED backlights ntau dua li cov fluorescent-hom backlights ntawm feem ntau lwm LCD TVs.
LCD thiab QLED
LED tsis yog tib daim ntawv lo uas tuaj yeem cuam tshuam txog LCD TVs. Lwm daim ntawv lo uas koj yuav ntsib yog QLED, uas feem ntau yog siv los ntawm Samsung thiab TCL. Vizio, ntawm qhov tod tes, siv lo lus Quantum.
Cov ntawv no xa mus rau TVs uas siv quantum dot thev naus laus zis los txhim kho xim kev ua haujlwm. Quantum dots yog ib txheej ntxiv ntawm nano-loj hais, muab tso rau nruab nrab ntawm lub teeb ci LED thiab LCD zaub txheej hauv LCD TV.
Cov dots yog pawg nyob rau hauv ntau qhov sib txawv, nrog rau txhua qhov me me tsim cov xim tshwj xeeb thaum ntaus los ntawm lub teeb los ntawm LEDs. Qhov tshwm sim yog cov xim nplua nuj uas tuaj yeem tso tawm rau ntawm lub vijtsam LCD TV, tshwj xeeb tshaj yog cov duab ntawm qib siab dua.
LCD thiab OLED
Txawm hais tias LCD yog cov thev naus laus zis siv hauv TV feem ntau, muaj ib hom TV uas tsis yog qhov txawv ntawm LCD, OLED.
OLED TVs siv cov thev naus laus zis uas muaj cov pixels ntawm tus kheej (zoo ib yam li tam sim no-tso plasma TV tech). Nws siv zog tsawg dua thiab tuaj yeem ua tau yuav luag daim ntawv nyias.
Txhua pixel tuaj yeem qhib thiab tawm ntawm tus kheej, tso cai rau OLED TVs los tsim cov xim dub thiab cov xim zoo nkauj dua li cov ntshav lossis LCD. Txawm li cas los, lub ntsiab drawback yog ib tug tag nrho tsis muaj brightness. LCD TVs tuaj yeem tsim qhov ci ntsa iab ntau dua.
LCD thiab Plasma
LCD thiab plasma TVs sib koom ib yam. Ob leeg yog tiaj thiab nyias thiab tuaj yeem ua rau phab ntsa. Txawm li cas los xij, hauv cov txee nyias, cov TV no siv cov thev naus laus zis sib txawv los tso cov duab rau saib TV.
Txawm hais tias plasma TVs tau raug txiav lawm, tseem muaj ntau yam siv.
Plasma TVs siv pixels ua los ntawm tus kheej-emitting phosphors (tsis tas yuav muaj lub teeb rov qab) los tsim cov duab. Qhov zoo dua ntawm LCD TVs yog tias txhua phosphor tuaj yeem qhib thiab tawm ntawm tus kheej, ua kom cov xim dub tob dua.
Ntawm qhov kawg, plasma TVs tsis tuaj yeem tsim cov duab ci li LCD TV. Tsis tas li ntawd, plasma TVs yuav raug hlawv-hauv yog tias cov duab zoo li qub tau tshwm sim ntawm qhov screen ntev dhau lub sijhawm.
Video Frame Rate vs. Screen Refresh Rate
Thaum yuav khoom rau LCD lossis LED / LCD TV, koj yuav hnov cov lus zoo li 60 Hz, 120 Hz, 240 Hz, MotionFlow, ClearScan, thiab ntau dua. Qhov no txhais li cas, thiab nws puas tseem ceeb thaum xav txog kev yuav lub LCD lossis LED / LCD TV?
Cov lej thiab cov ntsiab lus hais txog yuav ua li cas lub LCD TV tuaj yeem ua haujlwm. Txawm hais tias LCD TVs tuaj yeem tsim cov duab ci, muaj yeeb yuj, ib qho teeb meem no TVs tau muaj los ntawm qhov pib yog tias cov lus teb tsis yog qhov ntuj. Yog tias tsis muaj qee qhov kev txhim kho, cov duab nrawm nrawm ntawm LCD TVs tuaj yeem ua rau muaj kev lag luam lossis jerkiness.
Ntau xyoo dhau los, ntau lub thev naus laus zis tau ua haujlwm uas tau txhim kho ntau yam sib txawv.
Ib qho kev xaiv yog kom ntau zaus lub vijtsam refreshes cov duab ntawm lub vijtsam. Piv txwv li, 60 Hz txhais tau hais tias lub vijtsam refreshes 60 zaug ib pliag, 120 Hz refreshes ntawm 120 zaug ib pliag.
Lwm cov txheej txheem kuj tseem siv tau, xws li kev ntsuas lub teeb dub (flashing lub teeb rov qab ntawm tus nqi siab) thiab thav duab interpolation (ntxig dub lossis nruab nrab thav duab ntawm txhua tus ncej).
Cov txheej txheem siv nws txawv nyob ntawm hom thiab qauv ntawm TV.
Ua ntej koj yuav LCD TV
Ua ntej koj yuav ib lub LCD TV, ntxiv rau cov thev naus laus zis uas tau hais los saum toj no, muaj lwm yam yuav tsum tau xav txog kom lub hom phiaj tshwj xeeb thiab qauv tsim nyog rau koj.
- Screen loj thiab qhov chaw nyob deb: TV screen loj dua. Yog tias koj tab tom xav txog qhov tau txais TV loj, xyuas kom nws haum rau hauv koj chav thiab saib zoo ntawm koj qhov chaw zaum deb.
- Saib lub kaum ntse ntse: Ib qho tsis muaj zog ntawm LCD TVs yog qhov pom qhov nqaim. Koj tau txais cov txiaj ntsig zoo tshaj plaws ntawm qhov chaw zaum hauv nruab nrab thiab cov txiaj ntsig zoo hauv 30 txog 45 degrees ntawm ob sab ntawm qhov chaw nruab nrab. Txawm li cas los xij, thaum koj txav deb mus rau ob sab, koj yuav pom cov duab fading thiab xim hloov. OLED thiab plasma TVs tsis tshua muaj teeb meem rau qhov teeb meem no.
- npo tiaj tus lossis lub vijtsam nkhaus: Txawm hais tias tsis muaj ntau npaum li lawv tau ob peb xyoos dhau los, Samsung tseem ua rau cov xov tooj nkhaus nkhaus. Txawm li cas los xij, muaj qee yam yuav tsum xav txog, xws li cuam tshuam rau chav glare thiab saib lub kaum sab xis.
- Kev sib txuas: Nyob ntawm hom thiab qauv ntawm lub TV, hom thiab tus lej ntawm kev sib txuas yuav txawv. Feem ntau hais lus, koj tuaj yeem txuas ob qho qub VCR thiab qhov tseeb Blu-duab tshav Disc player. Yog tias koj muaj cov khoom qub qub (xws li VCR lossis DVD player tsis muaj HDMI txuas), muaj ntau lub TVs (ob qho tib si LCD thiab OLED) uas yuav muaj kev xaiv txwv.
- Smart TV: Feem ntau LCD TVs tau nruab nrog qee qhov ntse. Qhov no tso cai rau koj mus tshaj tawm cov ntsiab lus, xws li Netflix, ncaj qha rau koj lub TV yam tsis muaj ib qho khoom siv sab nraud, yog tias TV txuas nrog hauv internet.
- HDR: HDR muaj nyob ntawm qee lub LCD thiab OLED TVs. Cov yeeb yam no tso cai rau koj saib cov ntsiab lus tshwj xeeb uas tau sau nrog cov ntaub ntawv ua kom pom kev ci ntsa iab.
- Suab xaiv: Txhua lub LCD TVs tuaj nrog cov neeg hais lus built-in, tab sis lub suab zoo feem ntau tsis zoo. Yog tias lub suab tsis txaus siab, txuas lub TV rau lub suab sab nraud, xws li lub suab nrov lossis lub suab hauv tsev ua yeeb yam. Txhua lub LCD TVs, tshwj tsis yog rau qee qhov uas muaj qhov loj me me, tuaj yeem txuas rau lub suab sab nraud. Feem ntau muaj cov kev xaiv analog thiab digital txuas. Txawm li cas los xij, nyob ntawm hom thiab qauv, tsuas yog qhov kev xaiv kev sib txuas digital tuaj yeem muab.
