TFT zaub ua haujlwm li cas?
Oct 22, 2018
Lub TFT zaub yog lub npe ntawm "Thin Film Transistor", uas yog hais txog cov yeeb yaj kiab nyias siv ua kua dej, tab sis tau hais txog thin film transistor (matrix) - uas tau "khov khov" tswj cov neeg pixels ntawm qhov screen. Qhov no kuj yog lub hauv paus chiv keeb ntawm lub koomhaum npo ntawm TFT.
Yog li cas daim duab no yuav ua li cas? Cov ntsiab cai yooj yim yog yooj yim: cov lus muaj ntau ntawm cov pixels uas tawm lub teeb ntawm cov xim, tsuav tus neeg pixels raug tswj kom pom cov xim coj. Hauv TFT LCD, kev siv tshuab nraaj feem ntau yog siv. Thiaj li tswj tau cov xim thiab qhov ci ntawm txhua lub pixel, nws yog ib qho tsim nyog yuav tsum nruab ib qho kev kaw zoo li tom qab txhua pixel. Thaum qhib qhov "louver", lub teeb ci tau dhau los, thiab "Thaum cov qhov chaw nkaum tau kaw lawm, lub teeb tsis tuaj yeem dhau los tsis tau, tsis yog yooj yim raws li nws tau hais lawm." LCD (Ua Li Qub Crystal Display) siv cov yam ntxwv ntawm cov kua qaub (kua thaum rhuab, thiab khoom thaum txias).
Feem ntau, cov kua muaj kua muaj peb hom:
Cov nplais-zoo li cov kua haus ua kua (Lub Ntsuas)
ib cov xim ua kua (Nematic) ua kua ua kua zoo li cov nplaum matchstick
Cholestic kua Crystal
Cov kua siv lead ua kua siv los ua cov qauv duab. Thaum sab nrauv hloov, nws cov qauv molecular tseem hloov, thiab yog li muaj qhov sib txawv ntawm lub cev - lub hom phiaj ntawm kev cia lub teeb kis los yog thaiv lub teeb - uas yog, cov neeg dig muag zoo li.
TFT zaub duab
Txhua leej txhua tus paub txog peb lub ntsiab xim, yog li txhua lub pixel ntawm lub vijtsam zaub yog tsim ntawm peb yam uas zoo sib xws li tau piav los saum no, thiab tswj peb cov xim liab, ntsuab thiab xiav.
Qhov feem ntau ib qho siv tam sim no yog Twisted Nematic TFT LCD. Cov lus hauv qab no piav qhia txog hom kev qhia ntawm TFT li cas. Cov lus thev naus laus zis no kuj zoo ib yam thiab peb yuav qhia lawv nyob hauv cov ntsiab lus hauv ob feem hauv tsab ntawv no.
Muaj grooves nyob rau hauv lub Upper thiab qis txheej, nyob rau hauv lub sab grooves raug teem longitudinally thiab qis txheej raug npaj tom qab. Thaum cov kua siv lead ua kua hauv lub xeev ntuj tsis muaj qhov siv hluav taws xob, lub teeb sib txawv ntawm cov txheej txheej ntawm cov nplaum nematic TFT zaub ua hauj lwm los ntawm interlayer, thiab 90 degree distortion tshwm sim, thiaj li tias qis txheej yuav tsum tau smoothly kis.
Thaum twg ib qho hluav taws xob nyob nruab nrab ntawm ob lub khaubncaws sab nraud povtseg, lub tshuab hluavtaws raug tsim tawm, thiab cov kua nplaum yog teem kom vertically, thiaj li hais tias lub teeb tsis sib tw - qhov tshwm sim yog tias lub teeb tsis tuaj yeem dhau ntawm txheej txheej.
TFT pixel qauv: Cov xim lim yog muab faib ua xim, xim ntsuab thiab xiav raws li xim, thiab npaj rau hauv lub khob substrate tig los ua ib pawg (dij suab) sib thooj rau ib qho pixel. Txhua cov xim monochromatic hu ua sub-image. Sub pixel. Yog li, yog lub TFT zaub txhawb zog siab tshaj plaws ntawm 1280 × 1024, ces yuav tsum muaj tsawg kawg yog 1280 × 3 × 1024 sub-pixels thiab transistors. Rau ib tug 15-nti TFT zaub (1024 × 768), ib pixel yog kwv yees li 0.0188 ntiv (sib npaug 0.30mm), thiab rau lub 18.1 inch TFT zaub (1280 × 1024), nws yog 0,011 nti (sib npaug rau 0.28 hli) .
Raws li koj paub, pixels yog decisive rau cov zaub, thiab tus me me txhua pixel, loj dua qhov daws teeb meem ntau tshaj plaws uas cov zaub ua tau. Txawm li cas los xij, vim muaj kev txwv ntawm lub zog ntawm lub transistor, qhov luaj li cas ntawm txhua tus pixel ntawm TFT nyob rau theem no yeej yog 0.0117 nti (0.297 mm), yog li ntawm 15-nti zaub, qhov kev daws teeb meem tsuas yog 1280 × 1024 ntawm qhov siab tshaj plaws.
