Tsev > Exhibition > Ntsiab lus

Tus qauv ntawm cov kua siv lead ua kua

Sep 25, 2017

Ob lub ntsej muag khoob nyhiab yog ib sab rau ib leeg, thiab lub sij hawm tsis ua tiav. Daim duab no yog ib qho kev xeem ua nrog rau cov ris tsho hnav roj hmab.

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Cov kua siv lead ua kua yog siv cov cuab yeej no los ua kom tiav cov phaj polarizing, polarizing phaj ntawm qaum thiab qis ob laj kab ntsug rau ib leeg yog ntim nrog kua siv lead ua kua, kua siv lead ua los ntawm kev siv hluav taws xob tswj kev ua haujlwm ntawm kev sib hloov, qhov kev taw qhia ntawm lub teeb, thiaj li hais tias qhov hluav taws xob ntawm qhov sib txawv ntawm qhov ntau thiab tsawg, nws yuav tsim ib qho xim txawv, raws li muaj nyob hauv daim duab Xya.

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Thaum qhov teeb meem sib ntxais los ntawm lub ncov qab zib (Polarizer), lub teeb yuav ploj mus rau hauv ib qho kev coj, los ntawm cov kua siv lead ua kua molecules, cov kua siv lead ua kua molecules tau hloov 90 degrees, yog li thaum lub hiav ncav tsis cuag lub phom sab saum toj thaum qhov kev coj ntawm kev coj ntawm lub teeb cia li tig 90 degrees. Lub phom polarising ntawm qis txheej thiab lub phom polarizing ntawm txheej txheej yog raws nraim 90 degrees sib nrug. Li ntawd, lub teeb kis tau zoo, thiab yog lub teeb hits ntawm lub lim liab, nws yog xim liab. Yog hais tias cov kua siv lead ua kua molecules sawv thiab txoj kev kaj tsis hloov, lub teeb tsis tuaj yeem dhau ntawm lub ncov qaum, tsis tuaj yeem pom tshwm, raws li pom hauv daim duab (xya) cov kua siv lead hauv qab cov xim xiav.

Nquag dawb thiab feem ntau cov qauv dub :

   NW hu ua NW (Nquag dawb) txhais tau hais tias thaum peb tsis siv qhov hluav taws xob rau lub LCD vaj huam sib luag, peb pom tias lub vaj huam sib luag yog qhov kaj, yog li nws yog hu ua dawb. Lwm txoj kev, thaum lub vaj huam sib luag tsis siv rau qhov voltage, lub vaj huam sib luag tsis tau pob tshab, thiab tig dub, nws hu ua NB (Feem ntau cov dub)

Vim li cas koj ho muaj ob lub qauv no?

Feem ntau rau tej qhov chaw sib txawv. Lub computer siv computer lossis phau ntawv lub computer, feem ntau yog rau NW configuration, nws yog vim lub computer software ib puag ncig, koj yuav pom tias feem ntau ntawm tag nrho cov kev tshuaj ntsuam yog ci, uas yog daim ntawv thov ntawm lub computer software rau dub thiab dawb. Vim hais tias lub teeb taw tes yog feem ntau, kev siv NW yooj yim, ntawm chav kawm, vim hais tias cov teeb meem ntawm NW tsis tas yuav ntxiv qhov hluav taws xob, qhov nruab nrab yuav ntau dua kev txuag hluav taws xob.

Luv, daim ntawv thov NB feem ntau yog nyob rau daim ntawv tso npe dub.

Tsim ntawm txiav:

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Tsim ntawm txiav:

TFT:

TFT LCD Suav txhais lus lub npe hu ua nyias zaj duab xis transistor kua siv lead ua kua, peb yuav tsum tau hais qhov kev tswj tuav qhov kev lag luam hauv LCD los ntawm qhov pib. Thaum siv cov yeeb yaj kiab nyias transistor los ua kom muaj hluav taws xob los tswj cov kua siv lead ua kua dej, hu ua TFT LCD. los ntawm cov duab (yim) hauv seem ntawm cov qauv, saib ob txheej ntawm iav ntawm cov kua siv dej ua kua, yuav tsim ib daim paib hauv lub plhaub (capacitor), peb hu ua CLC (capacitor of crystal liquid). Nws yog hais txog qhov loj ntawm 0.1pF, tab sis qhov tseeb daim ntawv thov, lub capacitor yuav tsis tswj qhov voltage rau lwm zaus koj hloov cov duab cov ntaub ntawv. Uas yog hais thaum lub TFT ntawm lub capacitor them nyiaj, nws yuav tsis cia qhov voltage, mus txog rau tom ntej TFT rau lub sijhawm uas them lub sijhawm. (feem ntau 60Hz screen hloov tshiab, yuav tsum ceev kom txog 16 lub sij hawm.) Vim li ntawd, qhov teeb meem ntawm qhov hloov) Cov kev hloov hauv gray teev yuav qhia tsis yog. Vim li no hauv cov qauv vaj huam sib luag tsim, yuav ntxiv ib daim CSAC capacitor CS (cia capacitor ~ 0.5pF), kom tus nqi hluav taws xob thiaj li yuav tswj tau kom txog thaum lub sij hawm tom qab hloov cov duab. Tab sis qhov tseeb, ntev hauv cov iav ntawm TFT nws tus kheej tsuas yog siv cov kev hloov hauv transistors. Nws txoj hauj lwm tseem ceeb yog los txiav txim siab txog qhov hluav taws xob ntawm qhov hluav taws xob ntawm tus neeg tsav tsheb tsis yog yuav tsum tau ntim rau qhov chaw. Raws li qhov taw tes kom them rau lub siab voltage, thiaj li yuav qhia tau li cas ntsuas nplaim ntawm sab nraud. Tus neeg tsav tsheb hauv LCD los txiav txim siab.

Ncej nplaum thiab lub kav hlau:

Cov qauv ntawm ob hom kua nplaum thiab lub raj. Siv cov kua nplaum rau ntawm sab nrauv thiab qis dua ob txheej ntawm cov iav, tuaj yeem ua tau zoo, thiab muab ib qho ntawm cov kua siv lead ua kua tshuaj thiab tawm sab nraud, vim li ntawd cov kua nplaum ua nws lub npe, nyob ib ncig ntawm lub vaj huam sib luag, cov kua siv lead ua kua molecules rau lub vaj huam sib luag. Thaum lub tshuab txuas sab nraud yog yuav tsum tau them rau ob txheej txheej ntawm iav, nws yuav tsum sib npaug ntawm cov iav substrate, tab sis lwm yam tshwm sim los ntawm cov khoom sib cais tsis sib xws ua ke, nws yuav hneev taw ntawm lub teeb thiab tswj tsis tau ob daim iav nyob rau hauv qhov tsim nyog (qhov sib txawv), yuav yog qhov phenomenon ntawm hluav taws xob lub teb tsis sib npaug, uas cuam tshuam rau kev ua tau zoo ntawm gray scale LCD.

Xim lim:

Lub LCD nyob rau hauv lub iav tsom iav

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Yog hais tias koj muaj sij hawm, nrog ib lub iav tsom, ze rau cov kua siv lead ua kua. Koj yuav pom cov duab (cuaj) uas muaj nyob rau hauv. Peb paub hais tias xim liab, xiav thiab ntsuab, yog qhov sib txawv xim. Uas yog hais tias kev siv ntawm peb hom ntawm cov xim, lawv muaj peev xwm sib txawv xim. Muaj ntau lub rooj rau zaub mov hauv plawg yog qhia tias siv cov xim rau txoj cai no. Peb muab RGB peb xim, peb cov ntsiab lus cais, txhua tus hloov gray hloov, ces peb RGB uas nyob ib sab rau cov lus, raws li cov duab ntawm lub hauv paus, uas yog lub pixel. tias ib tug pixel yuav muaj xim sib txawv. Hloov. Ces qhov xav tau rau kev daws teeb meem ntawm 1024 * 768 tso saib vijtsam, tsuav yog tias peb ua lub dav hlau no nrog 1024 * 768 pixel, koj tuaj yeem tso cov duab no. Hauv daim duab (cuaj), txhua qhov dub ntawm ib lub RGB point, hu ua Black matrix. peb saib rov qab duab (cuaj) qhia tau hais tias lub zauv dub tuaj yeem siv los npog lub teeb tsis npaj siab ua. Nws zoo li tej kab hauv ITO los sis Cr / Al kab, los yog ib feem ntawm TFT. Qhov no yog vim li cas peb nyob hauv daim duab (cuaj), txhua qhov RGB nqaij zoo tsis rectangular, nyob rau sab laug ntawm sab laug ntawm lub nris yog dub ntu uas yog ib feem ntawm cov dub qhov ntawm lub kaum sab nraud uas tsis muaj qhov chaw nyob yog TFT qhov chaw.

Hom kev hloov yooj yim:

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Kev siv lub plhaub ziag no feem ntau siv rau cov computers los sis cov computers hauv computer. Yog vim li cas tam sim no qhov software, feem ntau nyob hauv lub qhov rais ntawm qhov screen, peb pom, yog qhov loj me ntawm ib lub thawv uas muaj cov seev cev, tsuas yog tuaj yeem ua rau lub npoo ntug, ncaj nraim, thiab tsis zoo ib lub flash lossis jagged siab.

AV cov khoom, vim hais tias lub TV teeb liab yog feem ntau cim, feem ntau ntawm nws cov contour yog tsis ncaj ncees, kev AV ces yog

Kev siv ntawm mosaic kev hloov tau tam sim no tau zoo dua rau kev siv cov kev sib xyaws tsis sib luag.

Pixel:

Txhua pixel ntawm lub LCD vaj huam sib luag tau muab faib ua xim liab, xim ntsuab thiab xiav rau peb, RGB yog lub ntsiab xim, peb lub xim yuav tsum tov nrog ntau hom xim, peb muab peb lub ntsiab lus rau RGB peb xim ntawm nws tus kheej, txhua tus txawv gray hloov hloov, ces peb RGB uas nyob ib sab rau cov yeeb yam qhia raws li cov duab ntawm cov chav tsev yooj yim yog cov pixel, pixel yuav muaj xim txawv txav.

Colour qhov tob:

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256 Xim 8 (R) * 8 (G) * 4 (B) = 256 Xim

High xim

32 (R) * 64 (G) * 32 (B) = 65536 Xim

Puv xim

64 (R) * 64 (G) * 64 (B) = 262144 Xim

Muaj tseeb xim

256 (R) * 256 (G) * 256 (B) = 167

Aperture piv:

Ib qho tseem ceeb tshaj plaws hauv LCD yog qhov ci ntsa iab, thiab qhov tseem ceeb tshaj plaws uas pom qhov ci ntsa iab yog qhov kev sib txuas lus. Lub ntsiab lus sib dhos (Aperture ratio) yog qhov sib piv ntawm cov cheeb tsam zoo uas lub teeb tau mus los ntawm.

Thaum lub teeb tawm ntawm lub teeb ci ntsa iab, thiab tag nrho lub teeb tsis dhau ntawm lub vaj huam sib luag, raws li ib lub teeb liab rau tus tsav tsheb LCD, thiab lub TFT nws tus kheej, thiab cov chaw cia ua lag luam, ntxiv rau cov chaw no yuav tsis tshua meej, tab sis kuj vim hais tias kev tswj los ntawm cov seem ntawm lub teeb tsis yog cuam tshuam los ntawm voltage, thiab tsis tuaj yeem tso tawm kom pom qhov ntsuas grey, yog li lawv yuav tsum tau them, kom tsis txhob cuam tshuam nrog lwm thaj chaw txuas ntxiv kom muaj kev kaj huv.

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Vim li no, qhov pom kev zoo ntawm lub teeb nyob rau sab nraud tsuas yog sab nraud raws li pom ntawm sab xis ntawm daim duab (kaum ib). Lub cheeb tsam ntawm kev hloov zoo, uas yog hu ua aperture ratio, yog proportional rau tag nrho cheeb tsam. Lub teeb yog tawm ntawm lub phaj ntsa rov qab thiab kis los ntawm lub ncov qaum, iav, kua siv ua kua, xim lim thiab lwm yam. Cia peb xav tias qhov sib txig ntawm txhua feem yog raws li nram no:

Polarizer: 50% (vim hais tias nws tso cai nkaus xwb unidirectional lub teeb tsis muaj kom dhau)

Iav: 95% (txog li ob lub ncuav)

LCD: 95%

Qhov nruab nrab: 50% (tsuas yog ib nrab ntawm cov cheeb tsam ntawm kev hloov zoo)

Cov xim xim: 27% (teev tus nkag mus rau cov khoom nws tus kheej yog 80%, vim lub lim nws tus kheej pleev xim rau xim, tuaj yeem cia cov xim ntawm lub teeb yoj mus, tsuas yog 1/3 ntawm qhov ci ntsa iab, tsuas yog tag nrho 80 % * 33% = 27%.)

Nrog rau qhov saum toj no nkag mus, qhov sib tw ntawm lub rooj teeb pom kev zoo yuav tsuas yog 6%, nws yog qhov mob siab tiag tiag. Qhov no yog vim li cas qhov kev tsim ntawm TFT LCD yuav tsum nce lub aperture tus nqi kom ntau li ntau tau. Tsuav yog qhib qhov qhib ntau zog, qhov ci tuaj yeem yuav nce siab ntxiv. Nyob rau tib lub sij hawm, qhov ci ntsa iab ntawm lub vaj huam sib luag nrig tsis siab li. Nws yuav txuag tau hluav taws xob thiab nqi.