Yuav ua li cas kom paub qhov kev ua tau zoo ntawm LCD kev lag luam tswj kua siv lead ua screen tsav tsheb Circuit Court yog ib qho tseem ceeb thiab kev sib tw loj. Kab lus no txheeb xyuas qhov kev faib tawm thiab kev ua tau zoo ntawm LCD cov ntxaij vab tshaus LCD, qhia txog cov khoom tseem ceeb hauv kev tsim LDO thiab cov ntsiab lus xaiv LED dawb, thiab tus qauv tsim qauv ntawm kev them nqi twj tso kua mis LED tsav Circuit Court.
Sab saum toj ntawm cov qauv sab hauv ntawm TFT-LCD xim npo module yog ib qho LCD muaj LCD npo uas muaj cov polarizers, iav, thiab kua siv lead ua kua. Hauv qab no yog lub teeb dawb LED thiab lub teeb pom kev zoo. Nws kuj suav nrog LCD tsav IC thiab qhov hluav taws xob qis uas muab lub zog ruaj khov rau LCD tsav IC. Sib txawv voltage regulator screen (LDO), ob mus rau yim dawb LEDs thiab boost regulator IC tsav los ntawm LEDs.
Lub hauv paus ntsiab lus ntawm Circuit Court tsim qauv ntawm TFT-LCD xim screen module. Tom qab cov khoom siv hluav taws xob sab nraud Vcc tau nqis los thiab ruaj khov los ntawm LDO, nws muab cov khoom siv hluav taws xob ua haujlwm rau LCD tsav IC xws li S6B33BOA los tsav cov xim STN-LCD kua siv lead ua cov duab thiab cov ntawv nyeem; Cov khoom siv hluav taws xob sab nraud Vcc yog los ntawm lub twj tso kua mis nqi hluav taws xob Step-up voltage stabilization muab qhov hluav taws xob tas li thiab lub zog tam sim no mus rau lub teeb dawb LED xws li NACW215 / NSCW335. Lub teeb dawb ntawm LED yog cuam tshuam los ntawm lub teeb nraub qaum phaj kom qhia meej 65K xim ntawm LCD. Lub ci ci ntawm LED ncaj qha cuam tshuam rau kev zoo nkauj ntawm cov xim LCD.
LCD yog ib yam ntawm cov vaj huam sib luag tiaj tus, raws li kev tsav tsheb, nws tuaj yeem muab faib ua kev tsav tsheb zoo li qub (Static), kev tsav tsheb yooj yim (Matrix) thiab kev tsav tsheb (Active Matrix). Ntawm lawv, hom matrix yooj yim tuaj yeem muab faib ua hom twisted nematic (Twisted
Nematic, TN), Super Twisted Nematic (STN), thiab lwm yam passive matrix-tsav kua siv lead ua kua. Hom matrix nquag tuaj yeem muab faib ua nyias zaj duab xis transistor hom (ThinFilmTransistor, TFT) thiab ob-terminal diode
(Hlau / Insulator / Hlau, MIM) ob yam. TN, STN, thiab TFT LCD cov ntxaij vab tshaus yog qhov sib txawv hauv kev pom lub kaum ntse ntse, xim, qhov sib piv, thiab cov duab animation zoo vim lawv cov qauv sib txawv ntawm kev sib tw ua kua siv lead ua kua molecules, uas ua rau lawv muaj qhov sib txawv hauv kev faib cov khoom siv. Hais txog qhov tam sim no thiab theem ntawm daim ntawv thov ntawm cov kua siv lead ua kua technology, active matrix tsav tshuab yog raws li nyias zaj duab xis transistors, uas feem ntau yog siv nyob rau hauv phau computers thiab animation thiab cov duab ua khoom; ntshiab matrix tsav tshuab yog tam sim no raws li twisted nematic Thiab STN-raws li, STN LCD npo tuaj yeem tso saib peb lub ntsiab xim liab, ntsuab, thiab xiav los ntawm cov xim lim, thiab tom qab ntawd los ntawm kev sib koom ua ke ntawm peb lub ntsiab xim sib piv, nws muaj peev xwm. tso saib qhov tseeb xim ntawm hom puv xim. Tam sim no, cov ntawv siv xim STN-LCD feem ntau yog cov neeg siv khoom siv xws li xov tooj ntawm tes, PDAs, cov koob yees duab digital, video game consoles, thiab cov lus ua cov ntxaij vab tshaus.
Kev xaiv ntawm lub teeb dawb LED backlight. Raws li cov qauv tsim ntawm lub teeb pom kev zoo, lub teeb hauv pem hauv ntej poob qis (VF) thiab lub hauv ntej poob tam sim no (IF) yuav tsum me me, thiab qhov ci ntsa iab yog siab (500-
1800mcd) dawb LED. Siv lub xov tooj ntawm tes LCM ua piv txwv, 3-4 lub teeb dawb LEDs tam sim no siv. Nrog rau qhov nce hauv LED ci ci thiab cov tuam txhab xov tooj ntawm tes' yuav tsum tau txo tus nqi thiab kev siv hluav taws xob, nws xav tias LCM yuav siv 2 lub teeb pom kev zoo siab dawb LEDs (1200-2000mcd) los ntawm nruab nrab xyoo 2004. ), PDAs thiab cov xov tooj ntse yuav siv 4-8 LEDs dawb raws li xav tau vim lawv cov ntxaij vab tshaus LCD loj. NACW 215 / NSCW 335 thiab EL 99-
21/215UCW/TR8 yog ib tug dawb LED nrog daim iav. EL series muaj peb theem ntawm qhov ci: T, S, thiab R. T yog 720-1000mcd thiab S yog 500-720mcd. Lawv txhua tus haum rau lub xov tooj ntawm tes LCD backlighting. .
