OLED, LED, LCD, Yeej thiab Poob?

Yog hais tias 2018 yog ib lub xyoo ntawm kev siv technology zoo, nws tsis yog qhov exaggeration.Ultra HD 4K tseem yog tus qauv daws teeb meem hauv TV kev lag luam.High dynamic range (HDR) tsis yog qhov loj ntxiv lawm vim nws twb tau ua tiav lawm.Ib yam yog qhov tseeb rau cov ntxaij vab tshaus smartphone, uas tau dhau los ua kom pom tseeb dua vim qhov kev daws teeb meem nce ntxiv thiab pixel ceev ib nti.

Tab sis rau txhua yam tshiab, peb yuav tsum xav txog qhov sib txawv ntawm ob hom zaub.Ob hom zaub yog pom ntawm cov saib, TVs, xov tooj ntawm tes, koob yees duab, thiab yuav luag txhua yam khoom siv tshuaj ntsuam.

Ib qho ntawm lawv yog LED (Lub Teeb Emitting Diode).Nws yog hom khoom siv tshaj plaws ntawm kev ua lag luam niaj hnub no thiab muaj ntau yam thev naus laus zis.Txawm li cas los xij, tej zaum koj yuav tsis paub txog hom zaub no vim nws zoo ib yam li LCD (Liquid Crystal Display) daim ntawv lo.LED thiab LCD yog zoo tib yam nyob rau hauv cov nqe lus ntawm kev siv zaub.Yog tias lub vijtsam "LED" cim rau ntawm lub TV lossis smartphone, nws yog lub vijtsam LCD.Cov khoom siv LED tsuas yog hais txog lub teeb ci, tsis yog cov zaub nws tus kheej.

Tsis tas li ntawd, nws yog OLED (Organic Light Emitting Diode), uas yog siv nyob rau hauv high-end flagship xov tooj ntawm tes xws li iPhone X thiab lub tshiab tso tawm iPhone XS.

Tam sim no, OLED cov ntxaij vab tshaus tau maj mam ntws mus rau high-end Android xov tooj, xws li Google Pixel 3, thiab high-end TVs xws li LG C8.

Qhov teeb meem yog tias qhov no yog ib qho kev sib txawv kiag li tso saib technology.Qee tus neeg hais tias OLED yog tus sawv cev ntawm lub neej yav tom ntej, tab sis nws puas zoo dua li LCD?Ces, thov ua rawsTopfoisonkom paub.Hauv qab no, peb yuav nthuav tawm qhov sib txawv ntawm ob lub thev naus laus zis, lawv qhov zoo thiab cov qauv kev ua haujlwm.

Qhov txawv

Nyob rau hauv luv luv, LEDs, LCD cov ntxaij vab tshaus siv backlights illumination lawv pixels, thaum OLED pixels yog tiag tiag nws tus kheej-illuminating.Tej zaum koj yuav tau hnov ​​​​tias OLED pixels hu ua "self-illumination" thiab LCD technology yog "transmissive".

Lub teeb tawm los ntawm OLED zaub tuaj yeem tswj tau pixel los ntawm pixel.LED cov kua siv lead ua kua tsis tuaj yeem ua tiav qhov kev hloov pauv no, tab sis lawv kuj muaj qhov tsis zoo, uasTopfoisonyuav qhia hauv qab no.

Hauv cov nqi qis dua TV thiab LCD xov tooj, LED cov kua siv lead ua kua zoo li siv "ntug teeb pom kev zoo" qhov twg cov LEDs tau nyob rau sab ntawm cov zaub es tsis yog sab nraub qaum.Tom qab ntawd, lub teeb los ntawm cov LEDs no tawm los ntawm cov matrix, thiab peb pom cov pixels sib txawv xws li liab, ntsuab, thiab xiav.

Brightness

LED, LCD npo yog ci dua OLED.Qhov no yog ib qho teeb meem loj hauv TV kev lag luam, tshwj xeeb tshaj yog rau cov xov tooj ntse uas feem ntau siv sab nraum zoov, nyob rau hauv lub hnub ci ci.

Brightness feem ntau yog ntsuas nyob rau hauv cov nqe lus ntawm "nits" thiab yog kwv yees li qhov ci ntawm lub tswm ciab ib square meter.Lub siab tshaj plaws ci ci ntawm iPhone X nrog OLED yog 625 nits, thaum LG G7 nrog LCD tuaj yeem ua tiav qhov ci ci ntawm 1000 nits.Rau TVs, qhov ci ci tseem ceeb dua: Samsung's OLED TVs tuaj yeem ua tiav qhov ci ci ntawm ntau dua 2000 nits.

Brightness yog ib qho tseem ceeb thaum saib cov ntsiab lus video nyob rau hauv ib puag ncig lub teeb lossis lub hnub ci, nrog rau cov yeeb yaj kiab siab dynamic ntau.Qhov kev ua tau zoo no yog qhov tsim nyog rau TV, tab sis raws li cov tuam txhab xov tooj ntawm tes tau nce khav theeb ntawm kev ua yeeb yaj kiab, qhov ci kuj tseem ceeb hauv kev ua lag luam no.Qhov siab dua qhov ci ntsa iab, qhov pom kev cuam tshuam ntau dua, tab sis tsuas yog ib nrab ntawm HDR.

Zoo sib xws

Yog tias koj tso lub vijtsam LCD hauv chav tsaus, koj tuaj yeem pom tias qee qhov ntawm cov duab dub tsis yog dub tiag tiag, vim tias lub teeb nraub qaum (lossis ntug teeb pom kev zoo) tseem tuaj yeem pom.

Muaj peev xwm pom cov teeb pom kev tsis xav tau tuaj yeem cuam tshuam qhov sib piv ntawm TV, uas kuj yog qhov sib txawv ntawm nws qhov ci ntsa iab tshaj plaws thiab cov duab ntxoov ntxoo tsaus.Raws li ib tus neeg siv, koj yuav pom qhov sib piv tau piav qhia hauv cov khoom tshwj xeeb, tshwj xeeb tshaj yog rau TVs thiab saib.Qhov sib piv no yog qhia koj tias qhov kaj ntawm cov xim dawb ntawm tus saib yog piv rau nws cov xim dub.Lub vijtsam LCD zoo nkauj yuav muaj qhov sib piv ntawm 1000: 1, uas txhais tau hais tias dawb yog ib txhiab zaus dua li dub.

Qhov sib piv ntawm OLED zaub yog ntau dua.Thaum lub vijtsam OLED tig dub, nws cov pixels tsis tsim lub teeb.Qhov no txhais tau hais tias koj tau txais qhov sib txawv tsis txwv, txawm hais tias nws cov tsos zoo li zoo nyob ntawm qhov ci ntawm LED thaum nws teeb.

Kev xav

OLED panels muaj lub kaum ntse ntse pom zoo, feem ntau vim tias cov thev naus laus zis nyias nyias thiab cov pixels nyob ze rau ntawm qhov chaw.Qhov no txhais tau tias koj tuaj yeem taug kev ncig OLED TV lossis sawv ntsug hauv ntau qhov chaw ntawm chav nyob thiab pom qhov screen kom meej.Rau cov xov tooj ntawm tes, lub kaum sab xis ntawm kev pom yog qhov tseem ceeb heev, vim hais tias lub xov tooj yuav tsis sib luag rau lub ntsej muag thaum siv.

Lub kaum sab xis saib hauv LCD feem ntau tsis zoo, tab sis qhov no txawv heev nyob ntawm cov cuab yeej siv.Tam sim no muaj ntau ntau hom LCD panels nyob rau hauv kev ua lag luam.

Tej zaum qhov yooj yim tshaj plaws yog twisted nematic (TN).Cov thev naus laus zis no feem ntau yog siv rau hauv cov khoom siv qis kawg, cov laptops pheej yig, thiab qee cov xov tooj uas tsis tshua muaj nqi.Nws txoj kev xav yog feem ntau tsis zoo.Yog tias koj tau pom tias lub khoos phis tawj lub vijtsam zoo li tus duab ntxoov ntxoo los ntawm qee lub kaum sab xis, ces nws yuav yog ib lub vaj huam sib luag nematic.

Hmoov zoo, ntau cov khoom siv LCD tam sim no siv IPS vaj huam sib luag.IPS (Plane Conversion) yog tam sim no tus huab tais ntawm cov siv lead ua vaj huam sib luag thiab feem ntau muab cov xim zoo dua thiab pom lub kaum ntse ntse zoo dua.IPS yog siv nyob rau hauv feem ntau smartphones thiab ntsiav tshuaj, ntau lub computer saib thiab TVs.Nws yog tsim nyog sau cia tias IPS thiab LED LCD tsis yog kev sib koom ua ke, tsuas yog lwm txoj kev daws teeb meem.

Xim

Qhov tseeb LCD cov ntxaij vab tshaus tsim cov xim zoo heev.Txawm li cas los xij, zoo li qhov kev xav, nws nyob ntawm kev siv tshuab tshwj xeeb.

IPS thiab VA (Vertical Alignment) cov ntxaij vab tshaus muab cov xim zoo tshaj plaws thaum ntsuas tau zoo, thaum TN cov ntxaij vab tshaus feem ntau tsis zoo li.

Cov xim ntawm OLEDs tsis muaj qhov teeb meem no, tab sis thaum ntxov OLED TVs thiab cov xov tooj ntawm tes muaj teeb meem hauv kev tswj cov xim thiab kev ncaj ncees.Niaj hnub no, qhov xwm txheej tau txhim kho, xws li Panasonic FZ952 series ntawm OLED TVs txawm rau Hollywood xim grading studios.

Qhov teeb meem nrog OLEDs yog lawv cov xim.Ntawd yog, qhov ci ci tuaj yeem cuam tshuam rau lub peev xwm ntawm OLED vaj huam sib luag los tswj cov xim saturation.