1, Txheej txheem cej luam ntawm kev tsav tsheb
Kev tsav tsheb ntawm cov ntxaij vab tshaus LCD feem ntau yog nyob ntawm lub cev lub zog ntawm cov kua siv lead ua kua molecules thiab cov nyhuv ntawm cov hluav taws xob sab nraud. Cov kua siv lead ua kua molecules muaj birefringence thiab electro-optic nyhuv, uas txhais tau hais tias nyob rau hauv qhov kev txiav txim ntawm ib qho hluav taws xob sab nraud, lub xeev ntawm cov kua siv lead ua kua molecules yuav hloov, yog li cuam tshuam rau txoj kev nthuav tawm thiab polarization lub xeev ntawm lub teeb. Los ntawm kev tswj xyuas cov txheej txheem ntawm cov kua siv lead ua kua molecules ntawm txhua pixel, cov duab tso tawm tuaj yeem ua tiav.
Kev tsav tsheb ntawm lub vijtsam LCD feem ntau suav nrog kev tswj xyuas Circuit Court thiab cov ntaub ntawv tsav tsheb. Kev tswj xyuas Circuit Court yog lub luag haujlwm rau kev txais thiab ua cov duab teeb liab los ntawm sab nraud, tsim cov cim tswj thiab cov ntaub ntawv teeb liab; Cov ntaub ntawv-tsav Circuit Court precisely tsav txhua pixel ntawm lub LCD npo los ntawm ib tug series ntawm voltage thiab tam sim no tswj raws li tau txais cov teeb liab.
2, Tsav Circuit Court Design
1. Tswj Circuit Court
Kev tswj Circuit Court yog lub hauv paus ntawm LCD npo tsav tsheb, feem ntau yog tsim los ntawm microprocessors (xws li CPU lossis GPU), lub sijhawm tswj hwm (T-CON), thiab cov khoom sib txuas. Lub microprocessor yog lub luag haujlwm rau kev txais thiab ua cov duab tso tawm sab nraud, hloov lawv mus rau hauv hom ntawv uas tuaj yeem lees paub los ntawm LCD npo; Lub sij hawm tswj lub sij hawm tsim cov teeb meem tswj lub sij hawm thiab cov ntaub ntawv ua kom cov teeb liab raws li cov yam ntxwv thiab cov kev xav tau ntawm lub vijtsam LCD, ua kom muaj kev sib kis tau zoo thiab tso saib cov ntaub ntawv.
2. Cov ntaub ntawv tsav hluav taws xob
Cov ntaub ntawv-tsav Circuit Court yog lub luag haujlwm rau kev hloov cov ntaub ntawv teeb liab tawm los ntawm kev tswj Circuit Court rau hauv cov teeb liab voltage xav tau los ntawm pixels ntawm LCD npo. Cov qauv ntawm cov ntaub ntawv-tsav Circuit Court yuav txawv nyob ntawm seb hom thiab kev daws teeb meem ntawm LCD npo. Tab sis feem ntau hais lus, cov ntaub ntawv-tsav circuits suav nrog ob ntu: qhov chaw tsav tsheb thiab lub rooj vag tsav tsheb. Tus neeg tsav tsheb qhov chaw yog lub luag haujlwm rau hloov cov teeb liab digital rau hauv cov cim hluav taws xob analog thiab tsav cov kab ntawm lub vijtsam LCD; Tus neeg tsav tsheb lub rooj vag yog lub luag haujlwm rau kev tswj lub hauv thiab tawm ntawm lub rooj vag kab ntawm lub vijtsam LCD kom ua tiav kev soj ntsuam zoo lossis taw tes los ntawm kev tswj cov ntsiab lus pixel.
3, Teeb liab kis tau tus mob thiab synchronization
Kev sib kis thiab synchronization ntawm cov teeb liab yog qhov tseem ceeb hauv kev tsav tsheb ntawm cov ntxaij vab tshaus LCD. Txhawm rau kom ntseeg tau tias qhov kev sib kis tau raug thiab tso tawm cov ntaub ntawv, yuav tsum tau txais kev pom zoo ntawm cov teeb liab synchronization mechanisms. Piv txwv li, nyob rau hauv cov ntaub ntawv-tsav circuits, moos teeb liab feem ntau yog siv los synchronize cov ntaub ntawv xa mus; Nyob rau hauv cov txheej txheem tswj pixel, ntsug synchronization teeb liab (VSYNC) thiab kab rov tav synchronization teeb liab (HSYNC) yog siv los xyuas kom meej thav duab los ntawm ncej thiab kab los ntawm kab scanning ntawm daim duab.
Tsis tas li ntawd, txhawm rau txo kev cuam tshuam thiab poob thaum lub teeb liab kis tau tus mob, cov thev naus laus zis xws li cov teeb liab sib txawv thiab cov teeb liab sib txawv qis (LVDS) yuav tsum tau txais kev pom zoo los txhim kho kev ruaj ntseg thiab kev ntseeg siab ntawm cov teeb liab kis tau tus mob.
4, Pixel tswj thiab tso saib cov nyhuv
Cov nyhuv ntawm lub vijtsam LCD thaum kawg yog nyob ntawm kev tswj qhov tseeb thiab sib xws ntawm txhua pixel. Txhawm rau kom ua tiav cov kev tswj hwm pixel siab, cov ntaub ntawv-tsav hluav taws xob yuav tsum muaj peev xwm ua kom raug cov teeb liab hluav taws xob xav tau rau txhua pixel thiab xyuas kom meej tias cov teeb liab no tuaj yeem ruaj khov mus rau LCD npo. Nyob rau tib lub sijhawm, txhawm rau kom tsis txhob cuam tshuam thiab xim sib xyaw ntawm cov pixels uas nyob ib sab, nws yog ib qho tsim nyog yuav tsum tau txais qee qhov tshwj xeeb pixel kev npaj thiab kev tsav tsheb algorithms los txhim kho cov txiaj ntsig zoo.
Piv txwv li, RGB pixel kev npaj dav siv nyob rau hauv LCD cov ntxaij vab tshaus yog ib tug zoo pixel npaj txoj kev. Nws npaj cov pixels ntawm cov xim liab, ntsuab, thiab xiav ua ke raws li ib qho qauv los tsim ib chav pixel, thiab ua tiav cov xim sib txawv los ntawm kev tswj qhov ci piv ntawm peb cov xim pixels. Tsis tas li ntawd, qee qhov kev tsav tsheb siab tshaj plaws xws li Overdrive thiab greyscale voltage hloov kho tau dav siv hauv kev tsav tsheb ntawm LCD cov ntxaij vab tshaus los txhim kho cov khoom ua haujlwm.
Yuav ua li cas yog lub LCD screen tsav?
Sep 27, 2024Tso lus