LCD stands rau "Ua Kua Crystal Zaub". LCD tshuab tau nrog peb ntau xyoo thiab siv ntau daim duab yeeb yaj kiab, nrog rau cov ntawv qhia hauv cov twj paj nruag thiab cov khoom siv hluav taws xob siv, thiab cov phiaj xwm digital. Tej zaum kev siv ntau tshaj plaws rau cov neeg siv yog lawv siv hauv TVs .
Hauv TVs, LCD chips yog teem nyob thoob plaws lub vijtsam npo thiab siv lub teeb pom kev ( feem ntau hom yog LED ), LCD TVs yuav tso saib cov duab. Nyob ntawm lub TV daws teeb meem, tus lej ntawm cov chips uas siv tau tus xov tooj hauv lub tsheej lab (txhua tus LCD nti nruab nrab yog pixel).
LCD Siv Hauv Kev Yees duab Video
Txawm li cas los xij, ntxiv rau TVs, LCD tshuab siv nyob rau hauv ntau lub video projectors. Txawm li cas los xij, siv ntau tus LCD chips tso nyob thoob plaws lub vijtsam npo, video projector siv 3 tsim tshwj xeeb tsim LCD Chips los tsim thiab project dluab ntawm ib qho screen ntxiv. Peb lub LCD chips txhua tus muaj pixels tib yam sib npaug ntawm cov duab teeb ntawm lub projector, nrog rau cov kev pixel hloov hom siv hauv ib co video projectors los tso saib dua "4K zoo li" duab tsis tas muaj pes tsawg tus pixels .
3LCD
Ib hom LCD yees duab siv tshuab uas siv los ua 3LCD (tsis yog tsis meej pem nrog 3D).
Feem ntau ntawm 3LCD projectors, ib lub teeb uas muaj teeb ci tuaj yeem pom teeb pom kev dawb rau hauv 3-Dichroic Daim iav sib koom ua ke uas faib cov teeb ci mus rau xim liab, ntsuab, thiab xiav teeb, uas dhau mus, dhau ntawm tus LCD nti sib koom ua ke ntawm peb daim tawv nqaij (ib qho kev xaiv rau txhua tus thawj xim). Qhov peb xim tom qab siv tag nrho cov kev siv zog, dhau los ntawm lub lens sib dhos thiab ces npaj mus rau ib qho screen los yog phab ntsa.
Txawm hais tias teeb pom kev zoo los ntawm cov teeb uas muaj teebmeem, cov 3LCD projectors yuav ntiav Laser lossis Laser / LED-based lub teeb , tsis yog lub teeb, tab sis qhov kawg tau zoo ib yam - cov duab tso rau ib qho screen los yog phab ntsa.
3LCD Variants: LCOS, SXRD, thiab D-ILA
Txawm hais tias 3LCD technology yog ib qho ntawm feem ntau siv yees nyob rau hauv video projectors ( nrog rau DLP ), muaj qee qhov txawv ntawm cov qauv hauv LCD. Hom tib lub teeb pom kev zoo (Lamp / Laser) yuav siv tau nrog cov qauv ntawm tus lej LCD.
LCOS (Ua Kua Crystal rau Silicon), D-ILA (Cov Kev Teeb Pom Kev Siv Teeb Meem - siv los ntawm JVC) , thiab SXRD Silicon Crystal Reflective Display - siv los ntawm Sony), muab cov kev cai ntawm 3LCD thiab DLP technology.
Yuav ua li cas tag nrho peb lub variants muaj nyob rau hauv ntau yog hais tias es tsis txhob lub teeb dhau ntawm lub LCD chips tsim dluab li hauv 3LCD technology, lub teeb yog bounced tawm ntawm lub LCD daim tawv nqaij los tsim dluab. Yog li, thaum nws los txog rau txoj kev kaj, LCOS / SXRD / D-ILA raug xa mus rau "kev siv" technologies, qhov 3LCD tau raug xa mus ua "kev siv tshuab" kev xa mus.
3LCD / LCOS Qhov Zoo Tshaj Plaws
Ib qho tseem ceeb ntawm LCD / LCOS tsev neeg ntawm kev yees duab yees duab yees yog tias tib qho xim dawb thiab xim muaj xim zoo tib yam. Qhov no txawv nrog DLP technology uas, txawm hais tias muaj peev xwm ua tau cov xim zoo thiab cov theem dub, tuaj yeem tsis tso tawm tau ob lub xim dawb thiab xim nyob rau tib theem nyob rau hauv qhov uas lub projector siv lub xim xim.
Feem ntau DLP qhov projectors (tshwj xeeb tshaj yog rau tsev siv) lub teeb dawb muaj dhau los ntawm lub xim xim uas muaj xim liab, ntsuab thiab xiav, uas txo cov teeb ntawm lub teeb tawm tuaj. Ntawm qhov tod tes, DLP projectors uas siv cov cuab yeej siv tshuab tsis xim (xws li LED los yog Laser / LED Hybrid lub teeb los yog 3-nti qauv) muaj peev xwm tsim tib theem ntawm cov xim dawb thiab xim. Yog xav paub ntxiv, nyeem peb tus khub niam txiv: Video Projectors thiab Color Brightness
3LCD / LCOS Disadvantages
Tus LCD projector feem ntau tuaj yeem pom cov lus uas hu ua "screen door effect". Vim tias qhov screen yog ua los ntawm cov neeg pixels, cov pixels tuaj yeem pom ntawm lub voj loj loj, yog li muab cov tsos ntawm saib daim duab los ntawm "qhov rooj".
Yog vim li cas qhov no yog qhov pixels sib cais los ntawm cov xim dub (tsis-lit). Raws li koj nce qhov loj ntawm daim duab duab (lossis txo qhov kev daws teeb meem loj tib yam nkaus) ntawm tus kheej pixel ciam teb yog ntau dua yuav pom, yog li muab qhov pom ntawm daim duab los ntawm "lub qhov rooj". Yuav kom tshem tawm cov nyhuv no, cov tuam txhab siv ntau yam yees siv los ua kom cov vis dis aus pixel ciam teb.
Ntawm qhov tod tes, rau LCD-raws li video projectors uas muaj peev xwm ua yeeb yaj kiab ( 1080p los yog siab dua ), cov nyhuv no tsis pom txij thaum lub pixels me thiab thinner ciam teb, tshwj tsis yog tias koj nyob ze ze ntawm qhov screen, thiab npo yog loj heev.
Lwm qhov teeb meem uas tuaj yeem tuaj (txawm tias tsis tshua muaj heev) yog Pixel burnout. Txij li thaum ib tus ntiv tes LCD ua los ntawm ib tug neeg ntawm pixels, yog tias ib qho pixel kub tawm nws qhia ib qho teeb meem dub lossis dawb teev ntawm daim duab duab. Cov neeg pixels tsis tuaj yeem kho, yog tias ib lossis ntau pixels hlawv, txhua tus nti yuav tsum tau hloov.
Lub Kab Hauv Qab
Yees duab qhov project siv cov cuab yeej technology hauv LCD tshuab tau dav dav, pheej yig, thiab siv rau ntau yam kev siv, los ntawm kev ua lag luam thiab kev kawm rau tsev ua yeeb yam, kev ua si, thiab kev lom zem hauv tsev.
Piv txwv ntawm LCD-raws li kev tsim yeeb yaj kiab rau kev ua yeeb yam hauv tsev yog:
- Epson Home Cinema 2045 3LCD Video Projector - Yuav Los Ntawm Amazon
- Sony VPL-HW45ES SXRD Video Projector - Yuav Los Ntawm Amazon
Rau ntau cov qauv, xyuas peb cov npe ntawm:
- Qhov Zoo Uas Pheej Yug Pheej Yeeb Phem Video Projectors (nrog rau hom DLP thiab LCD).
- Zoo tshaj 1080p thiab 4K Video Projectors (nrog rau hom DLP thiab LCD).