Tom qab defeating lub CRT, LCD tshuab los ua vaj ntxwv undisputed ntawm cov lus teb rau luag txog 20 xyoo. Thaum lub Kaum Hlis 2013, Panasonic tshaj tawm qhov kev tshem tawm cov ntshav TV tom qab lub Peb Hlis 2014. Ib lub sijhawm thaum kawg, thiab keeb kwm lub teeb meem LCDs tau raug tswj los ntawm OLED.
Los ntawm LCD mus rau OLED, hloov tus cwj pwm txawv
Ironically, lub tiaj tus siab LCD tshuab hloov cov nkhaus CRT cathode duab tshav raj 20 xyoo dhau los; tom qab 20 xyoo, nws tseem ua tau los hloov lub LCD nrog ib tus qauv siv nkhaus, OLED (Lub Teeb Duab Hluav Taws Xob Emitting Diode).
Thaum pom CES nyob rau thaum ntxov xyoo 2013, lub ntiaj teb thawj curved TV tau qhia los ntawm LG. Dab tsi ntau ironic yog tias, tsuas yog cov tuam ntxhab muag lawv lub vaj huam sib luag tiaj tus CRT saib rau CRT lub neej txuas ntxiv, tib yam li lub xyoo, Sony pib lub ntiaj teb thawj curved LED TV nyob rau hauv teb rau lub OLED looming.
Technology yog lim hiam, LCD LCDs tau raug ntaus CRT, tab sis LCD yuav ntev hloov los ntawm lwm cov technologies. Txawm li cas los, ua ntej yuav hloov, manufacturers tseem yuav pib xa cov khoom hloov mus rau tus thawj LCD khoom kab. Lub sij hawm no, nws tseem tabtom los tuav lub LCD TV uas keeb kwm ntawm OLED lag luam.
OLED TV qauv
East Shi nyhuv, vim li cas tus ntxhuav LCD yuav tsum tsis txhob ua ntawm nkhaus nto?
Cov ntaub ntawv nkhaus yuav siv tau los ua kom tau ib tus neeg loj dua qhov laj thawj ntawm txoj kev pom kev, txhim khu lub luag hauj lwm ntawm kev saib xyuas, thiab cov ntawv xov xwm nkhaus tau ua rau nws pom ntau dua. Yog li nws yuav yooj yim ua rau ib tus curved OLED, thiab nws yog tsim los ntawm LG raws li ib tug curved TV. Tab sis tib qhov khoom tau raug tso rau ntawm LCD los ua kom zoo.
LCD kua Crystal imaging principle thiab qauv yog cov nyuab dua. Nws tswj cov kev sib hloov ntawm cov kua siv lead ua kua molecules los ntawm kev tswj hluav taws xob, qhov no thaiv cov teeb ntawm kev lag luam (grayscale brightness), thiab tom qab ntawd muab ntau hom pixels los tso saib peb lub ntsiab xim ntawm lub ncov qab zib thiab lub lim, -pixel ntsiab lus nrog controllable tob thiab xim yuav tau. Txawv cov dluab yog tso tawm kom pom hauv pixel array.
TN, IPS, MVA, thiab PVA panels uas peb ib txwm mloog yog tag nrho cov duab TFT uas tau tsav. Lawv qhov txawv yog qhov kev tsim cov kua siv lead ua kua tshuaj. Hauv cov qauv tseeb, cov kua tshuaj ua kua xeb tseem ceeb ntawm ob lub tsom iav los ntawm kev siv hluav taws xob los ntawm TFT (Thin Film Transistor).
Rau txhua tus sub-pixel taw tes, cov kua siv lead ua kua yog lub luag hauj lwm rau kev tswj cov nplai grey, thiab peb thawj xim cov ntxaij lim dej tswj cov xim. Lawv yuav tsum sib sau los ntawm ib qho rau cov xim kom yog. Yog hais tias lub lauj kaub tais diav sab nrig, lub sab nrug sab nrig yuav me dua lub npoo txheej, thiab thawj cov ntawv sib txuas ntawm cov kua siv ua kua thiab cov lim yuav ua rau muaj qhov sib txawv, ua rau muaj kev hloov xim. Lwm cov kev mob tshwm sim muaj xws li lub nrig qis, lub voj voog tsaus nti, thiab cov snowflakes.
