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Kev tsis ntawm cov kua siv lead ua kua

Jul 03, 2018

Kev tsis ntawm cov kua siv lead ua kua

1. thaj chaw
Qhov loj ntawm lub LCD yog tib yam li qhov kev tshuaj ntsuam uas yeej siv tau. Piv txwv, lub 15.1 nti LCD monitor yog sib npaug li 17 ntiv tes ntawm CRT npo visibility.
2. qhov muag pom
Cov kua siv lead ua kua muaj qhov pom ntawm lub ntsej muag, piv txwv li qis thiab sab qis tsis yooj yim. Piv txwv, thaum muaj teeb meem ntawm lub teeb ci ntsa iab dhau ntawm lub thawv ntawv polarizing, cov kua siv lead ua kua thiab cov yeeb yaj kiab, qhov tso zis lub teeb muaj qhov kev taw qhia, uas yog hais, feem ntau ntawm lub teeb tawm ntawm lub vijtsam yog nyob rau ntawm txoj kab kev taw qhia . Yog tias peb pom cov duab dawb los ntawm oblique lub kaum ntse ntse, peb yuav pom dub los yog xim distortion. Feem ntau hais lus, qaum thiab sab qis yuav tsum tsawg dua los yog sib npaug zos rau cov ces kaum. Yog hais tias lub kaum sab laj pom txog 80 degree, nws txhais tau hais tias lub vijtsam duab tau pom meej meej thaum pib ntawm 80 degree ntawm qhov kev ntsuas. Txawm li cas los xij, vim yog qhov txawv ntawm qhov tsis pom kev, yog tias koj tsis nyob rau qhov zoo tshaj plaws, koj yuav pom cov teeb meem nyob rau hauv cov xim thiab ci ntsa iab. Tam sim no, qee tus neeg muag khoom tau tsim ntau yam ntawm cov khoom siv tswv yim los sim ua kom pom cov ntsiab lus ntawm cov duab LCD, xws li IPS (Hauv Txoj Kev Hloov Siab), MVA (Multidomain Vertical Alignment), thiab TN + FILM. Cov kev yees no yuav ua rau kom pom lub kaum sab xis ntawm LCD kom txog 160 degrees, los yog ntau tshaj.
3. taw tes nrug
Feem ntau peb nug qhov LCD loj npaum li cas, tab sis neeg feem coob tsis paub tias qhov nqi no tau li cas. Tam sim no peb paub tias nws tau txais li cas. Piv txwv, cheeb tsam pom ntawm 14 nti LCD yog 285.7 hli x 214.3mm, thiab nws txoj kev daws teeb meem yog 1024 x 768, ces tus taw tes nrug yog sib npaug rau qhov pom kev dav / qib pixel (los yog qhov muag pom qhov siab / ntsug pixel), uas yog, 285.7mm / 1024 = 0.279 hli (los yog 214.3mm / 768 = 0.279mm).
4. cov degree xim
LCD yog tiv thaiv kev ua yeeb yam ntawm chav kawm. Peb paub hais tias txhua yam xim ntawm cov xwm txheej yog tsim los ntawm peb theem pib xim: xim liab, ntsuab thiab xiav. Lub LCD vaj huam sib luag yog li ntawm 1024 pixels thiab 768 pixels. Txhua pixel xim yeem yog tswj los ntawm peb cov xim yooj yim: xim liab, ntsuab, xiav (R, G, B). Cov khoom siv lead ua kua uas ua los ntawm cov tuam txhab feem ntau, txhua yam ntawm cov xim yooj yim (R, G, B) ncav 6 yam khoom, uas yog, 64 hom kev tshaj tawm, thiab txhua tus neeg pixel muaj 64 * 64 x 64 = 262144 xim. Muaj ntau cov chaw lag luam uas siv cov npe hu ua FRC (Frame Rate Control) los ua kom tag nrho xim ntawm daim duab, uas yog, txhua xim (R, G, B) tuaj yeem ncav cuag 8 khoom, uas yog 256 hom kev ua haujlwm, ces txhua tus kheej pixel yog txog 256 * 256 x 256 = 16777216 xim.
5. qhov sib txawv ntawm tus nqi
Qhov sib txawv ntawm qhov sib npaug yog txhais tias qhov sib npaug ntawm tus nqi siab tshaj plaws (Quan Bai) muab faib los ntawm qhov tsawg kawg nkaus luminance tus nqi (tag nrho dub). Qhov sib txawv ntawm CRT yog feem ntau siab li 500: 1, yog li ntawd nws yog ib qho yooj yim heev rau ib daim duab dub muag ntawm CRT cov duab. Tab sis nws tsis yooj yim rau LCD. Qhov nrob qaum ua los ntawm tus kab mob txias cathode ray tshav nyuab nyuab kom ua sai sai, yog li ntawd, lub tsom teeb yog ib txwm nyob ntawm lub teeb. Yuav kom tau ib daim duab dub tas, LCD module yuav tsum thaiv kom pom lub teeb ntawm lub nrig, tab sis nyob rau hauv lub cev, cov cheebtsam tsis ua raws li cov kev cai lij choj, thiab muaj qee lub qeeb. Feem ntau, qhov sib txawv ntawm qhov sib txawv rau tib neeg qhov muag yog li 250: 1.
6. cov nqi luminance
Qhov ci siab tshaj plaws ntawm cov khoom siv lead ua kua yog feem ntau yog txiav txim siab los ntawm txias cathode ray tubes (Bei Guangyuan). Qhov ci ntsa iab yog feem ntau ntawm 200 ~ 250 cd / m2. Lub ci ntsa iab ntawm LCD tseem qis, thiab qhov screen yuav tsaus. Txawm hais tias nws yog technically tau mus cuag ntau dua ci ntsa iab, qhov no tsis sawv cev rau qhov ntau dua qhov ci ntsa iab, vim hais tias qhov pom kev siab tshaj plaws yuav ua rau tus neeg pom lub qhov muag raug mob.
7. sijhawm sijhawm
Cov lus teb hais txog qhov kev sib puav ntawm txhua tus pixel ntawm LCD qhia txog nws cov lus teb rau lub teeb liab, uas yog, ntawm chav kawm, qhov me me zoo dua. Yog hais tias lub sijhawm teb ntev dhau lawm, nws tseem muaj peev xwm ua kom pom cov duab LCD ua rau cov duab ntxoov ntxoo pov tseg thaum pom cov duab zoo nkauj. Lub sij hawm teb ntawm lub dav LCD yog li ntawm 20 thiab 30ms.