LCD TV vs LED TV | LCD thiab LED TVs | LED TV siv zog tsawg
Ntau tus neeg siv khoom tsis meej pem nrog cov lus siv hauv TV, xws li LCD, LED, OLED, Plasma, HDTV thiab lwm yam. Tshwj xeeb, cov ntsiab lus LCD TV thiab LED TV baffle lawv ntau dua. Qhov koj yuav tsum paub yog technically ob qho tib si yog LCD TVs (LCD sawv cev rau Liquid Crystal Display). Qhov txawv ntawm LCD thiab LED tsuas yog Back Lighting Technology ntawm cov zaub.
Ib qho duab ntawm LED TV
Ob lub LCD thiab LED TVs siv Liquid Crystal Display technology. Cov ntxaij vab tshaus yog ua los ntawm cov kua siv lead ua kua; LCD zaub muaj ob daim hlau nyias ntawm cov khoom siv polarized koom ua ke nrog cov kua siv lead ua kua nruab nrab ntawm lawv. Thaum cov hluav taws xob tam sim no dhau los ntawm cov kua, cov muaju ua ke thiab thaiv lub teeb kom dhau los ntawm lawv. Yog li ntawd, txhua tus siv lead ua ua lub kaw lus, cia lub teeb hla los yog thaiv lub teeb. Qhov no yog cov cuab yeej siv hauv LCD TV los tso saib cov duab.
Tab sis cov crystals no tsis yog nws tus kheej illuminating, yog li lub teeb yog xa los ntawm ib tug series ntawm teeb nyob rau sab nraum qab ntawm lub LCD screen. Lub tshuab hluav taws xob rov qab yog qhov ua rau qhov sib txawv ntawm LCD thiab LED TV.
Nyob rau hauv ib txwm LCD TV lub teeb nyob tom qab ntawm lub vijtsam yog Cold Cathode Fluorescent Lamp (CCFL), Nws muaj cov raj fluorescent nteg kab rov tav hla qhov screen.
Thaum Plasma TV tau tshaj tawm rau kev ua lag luam, nws pib nyiam cov neeg siv khoom nrog nws lub vijtsam loj dua thiab cov duab zoo dua. Daim duab zoo hauv Plasma TV yog qhov zoo kawg nkaus vim qhov sib piv siab. LCD TVs tsis tuaj yeem ua qhov no vim yog CCFL backlighting system.
Lub thev naus laus zis LED backlight tau qhia hauv LCD TVs los ntsib qhov kev sib tw loj dua tsim los ntawm Plasma TVs. LED rov qab lub teeb LCD TVs tuaj yeem tsim qhov sib piv sib piv ze rau Plasma qhov sib piv piv; tseem Plasma TVs zoo dua ntawm qhov ntawd.
Nyob hauv LED TV lub teeb nyob tom qab ntawm lub vijtsam yog Lub Teeb Emitting Diodes (LED).
Peb hom teeb pom kev zoo yog siv los muab lub teeb pom kev rov qab rau lub vijtsam, RGB Dynamic LED, Ntug teeb pom kev zoo thiab tag nrho Array teeb pom kev zoo.
Hauv Dynamic RGB LED teeb pom kev zoo LEDs tau muab tso rau hauv qab lub LCD vaj huam sib luag thiab cais LEDs rau Liab, Ntsuab thiab Xiav yog tsim los tsim cov xim ci dua. Txoj kev no tso cai rau dimming tshwm sim hauv zos hauv ib cheeb tsam thiab yog li txhim kho qhov sib piv.
Hauv Edge teeb pom kev zoo, LEDs dawb tau muab tso rau ntawm ntug ntawm lub vijtsam thiab lub teeb tau nthuav dav thoob plaws lub vijtsam los ntawm lub vaj huam sib luag tshwj xeeb los tsim cov xim sib xws thoob plaws lub vijtsam. Txoj kev no ua kom yooj yim tsim qauv me me uas peb tuaj yeem pom hauv khw.
Nyob rau hauv tag nrho Array teeb pom kev zoo, LEDs tau muab tso rau hauv qab ntawm lub vijtsam zoo li Dynamic RGB LED, tab sis nws tsis tso cai rau lub zos dimming tshwm sim. Hauv qhov tsim no lub zog noj yuav tsawg tab sis nws tsis tau txhim kho cov duab zoo.
Kev taw qhia ntawm LED backlighting thev naus laus zis hauv TVs coj los cuam tshuam rau TV tsim. Cov TVs tau dhau los ua qhov loj me me, ci dua, xim gamut zoo dua, siv lub zog tsawg dua, tab sis kim heev.
Technologies hloov tas li; Cov thev naus laus zis tshiab tau tshaj tawm los ntawm kev nrawm nrawm los txhim kho cov khoom tsim. Sony Corporation tau tshaj tawm lub hli no (Lub Kaum Ob Hlis 2010) tias lawv tau tsim "Hybrid FPA (tshuaj-tsim duab-reactive alignment)", cov txheej txheem ua kua siv lead ua tshiab uas ua rau lub sij hawm teb sai heev rau cov kua siv lead ua kua.
Qhov no ua kom muaj kev ruaj khov thiab txawm tias kev sib haum xeeb ntawm cov kua siv lead ua kua molecules, yog li ua tiav kev txhim kho nyob rau hauv ob qho tib si kua siv lead ua lub sij hawm teb thiab qhov sib piv. Tsis tas li ntawd, qhov no tau ua rau nws muaj peev xwm tshem tawm Mura (qhov teeb meem tsis sib xws) hauv cov duab nrog rau kev tshem tawm 'cov duab nplaum' uas tuaj yeem tshwm sim tom qab siv mus ntev.
