Hnub no tsis muaj lus nug txog qhov zoo dua - CRT saib lossis LCD zaub. Rau cov neeg siv nruab nrab, qhov kev xaiv yog pom tseeb. Lub tshuab rau kev tsim cov kua siv lead ua cov ntxaij vab tshaus tau raug txhim kho tas li thiab qhib lub qab ntug tshiab hauv cheeb tsam no. Dab tsi yog qhov kev cia siab rau nws txoj kev loj hlob ntxiv? LCD puas tuaj yeem sib tw nrog lwm cov thev naus laus zis?
Cov ntawv luv LCD (Liquid Crystal Display) txhais tau tias cov kua siv lead ua kua paub zoo. Cov thev naus laus zis no tau tsim los ntev dhau los, tab sis vim muaj kev nyuaj hauv kev tsim khoom, nws tsis tau pom daim ntawv thov dav. Cov ntxaij vab tshaus me me ntawm cov khoom siv lead ua no tuaj yeem pom ntawm cov khoom siv hluav taws xob ntawm lub sijhawm ntawd. Lawv yog cov dub thiab dawb thiab tsis kav ntev. Nyob rau tib lub sijhawm, cov qauv tshiab thiab zoo tshaj plaws ntawm cathode ray hlab (CRTs) tau tshwm sim, uas maj mam kov yeej yuav luag tag nrho lub khw.
LCD thev naus laus zis tau hloov zuj zus ze li 30 xyoo nrog cov txiaj ntsig zoo kawg. Rau hnub nohnub LCD-duab yuav luag tag tshem tawm nws cov neeg sib tw hluav taws xob los ntawm cov khw muag khoom. Nws muaj cov yam ntxwv ua tau zoo heev thiab ua tiav kev sib tw nrog lwm cov khoom siv.
Niaj hnub nimno LCD-zaj duab hauv nws qhov tsis tau mus deb ntawm nws cov thawj coj dub thiab dawb:
- Nws pib ua haujlwm ntev dua.
- Qhov kev daws teeb meem thiab qhov loj me tau txhim kho zoo heev.
- Nws yog qhov ci zoo li CRT saib.
- zoo sib xws (250:1).
- Lub kaum sab xis zoo heev (120 degrees).
- me me thiab lub teeb yuag.
Hnub no, LCD zaub yog qhov txaus nyiam rau cov neeg yuav khoom dua li CRT saib. Tsuas yog lub vijtsam plasma tuaj yeem dhau los ua lwm txoj hauv kev rau nws, tab sis nws yuav siv sijhawm ntev ua ntej nws qhov kev siv, uas yuav ua rau cov kev xav tau ntawm ntau tus neeg siv. Cov cuab yeej technology ntawm nws cov khoom siv yog kim heev thiab siv zog ua haujlwm, nws muaj lub zog siv hluav taws xob ntau, thiab nws muaj cov teeb meem zoo ib yam li lwm cov neeg sib tw. Tsis tas li ntawd, "plasma" yog qhov nyuaj heev kom ua tiav siab. Nws qhov txiaj ntsig tseem ceeb yog qhov ci ntsa iab thiab qhov sib txawv ntawm cov duab.
Nyob rau hauv qhov parameter no, nws overtakes lwm hom saib. Tab sis nyob rau hauv cov nqe lus ntawm qhov ntev, LCD zaub yog cov thawj coj, lawv muaj ntau npaum li cas compact tshaj ob lub plasma thiab CRT. Nws tseem yuav tsum tau muab sau tseg tias lawv muaj kev nyab xeeb tag nrho rau tib neeg kev noj qab haus huv. Lawv tsis emit teeb meem hluav taws xob thiabelectromagnetic teb.
Tab sis txhua qhov kev tsim khoom muaj nws qhov tsis txaus uas tsis tuaj yeem tshem tawm. Ua ntej koj yuav ib qho LCD zaub, ua tib zoo saib xyuas lub xub ntiag ntawm "tawg" pixels. Nws ntseeg tau tias yuav tsum tsis txhob muaj ntau tshaj peb ntawm lawv ntawm ib qho screen. Txhawm rau paub qhov txawv ntawm lawv yog qhov yooj yim heev - xws li pixels ib txwm ci hauv ib qho xim. Kuaj qhov screen los ntawm kev hloov tib hom duab thiab xaiv qhov zoo tshaj plaws.
Npaum zeem muag rau cov thev naus laus zis ntawm cov khoom siv hluav taws xob (Light Emission Plastics). Nws tab tom hloov zuj zus mus tas li, thiab Cambridge Display Technology tau ua haujlwm zoo hauv cov kev taw qhia no. Lub luminosity ntawm cov ntxaij vab tshaus no tau loj hlob tas li thiab niaj hnub no tau mus txog theem ntawm cov LEDs niaj hnub.
