Qhov sib txawv ntawm Static Drive thiab Dynamic Tsav ntawm LCD Liquid Crystal Screen
Oct 13, 2022| Dab tsi yog qhov kev tsav tsheb zoo li qub ntawm LCD npo? Lub npe hu ua kev tsav tsheb zoo li qub ntawm lub vijtsam LCD txhais tau hais tias kev tsav tsheb hluav taws xob txuas ntxiv mus rau pixel electrodes thiab cov electrodes ntawm cov zaub kom txog thaum lub sijhawm tso tawm. Txij li thaum tsav tsheb voltage tseem tsis hloov pauv thaum lub sijhawm tso saib, nws yog hu ua kev tsav tsheb zoo li qub ntawm lub vijtsam LCD. Nws qhov laj thawj yog dab tsi?
Lub hauv paus ntsiab lus: Ib qho hluav taws xob txuas ntxiv lossis tsis muaj hluav taws xob tau siv ntawm ib khub ntawm cov khoom siv electrodes.
tsav waveform
Nyob ntawm cov teeb liab no, ntu waveform yog nyob rau theem lossis tawm ntawm theem nrog cov qauv waveform. Thaum nyob rau hauv theem, tsis muaj hluav taws xob teb ntawm cov kua siv lead ua kua, thiab cov kua siv lead ua kua yog nyob rau hauv lub xeev tsis-gated. Thaum cov theem rov qab, ib lub voj voos yog siv rau cov kua siv lead ua kua. Thaum qhov hluav taws xob ntawm lub voj voos yog siab dua qhov pib ntawm cov kua siv lead ua kua, cov kua siv lead ua kua yog nyob rau hauv lub xeev gated.
Static tsav, nyob rau hauv uas ib tug hluav taws xob teb yog tsis tu ncua thov los yog tsis thov ntawm ib tug khub ntawm coj electrodes. Raws li cov teeb liab hluav taws xob, ntu waveform yog nyob rau theem lossis rov qab mus rau cov qauv waveform. Nyob rau hauv theem, tsis muaj hluav taws xob teb ntawm cov kua siv lead ua kua, thiab LCD yog nyob rau hauv lub xeev tsis-gated.
Thaum cov theem rov qab, ib lub voj voos yog siv rau cov kua siv lead ua kua. Thaum qhov hluav taws xob ntawm lub voj voos yog siab dua qhov pib ntawm cov kua siv lead ua kua, lub LCD yog nyob rau hauv lub xeev gated. Thaum muaj ntau cov duab pixels ntawm cov kua siv lead ua kua zaub ntaus ntawv xws li dot matrix kua siv lead ua kua zaub ntaus ntawv, txhawm rau txuag cov khoom siv loj loj tsav Circuit Court, kev tsim thiab kev teeb tsa ntawm cov electrodes ntawm cov kua siv lead ua kua zaub ntaus ntawv tau ua tiav kom paub txog cov khoom siv loj loj. matrix qauv, uas yog, ib pawg kab rov tav ntawm cov duab pixels muab faib ua ob pawg. Cov electrodes rov qab txuas nrog ua ke thiab hu ua kab electrodes.
Cov ntu electrodes ntawm ib pawg ntawm ntsug zaub pixels txuas ua ke thiab coj tawm, uas yog hu ua kem electrodes. Txhua cov duab pixel ntawm cov kua siv lead ua kua yog qhov tshwj xeeb txiav txim siab los ntawm nws cov kab thiab kab. Txoj kev tsav tsheb siv txoj kev raster scanning zoo ib yam li CRT raws li.
Txoj kev tsav tsheb dynamic ntawm cov kua siv lead ua kua zaub yog siv rau kev xaiv cov pulses mus rau kab electrodes, thiab tib lub sij hawm tag nrho cov kab hluav taws xob uas tso saib cov ntaub ntawv muab cov kev xaiv sib xws lossis tsis xaiv tsav pulses, kom paub txog cov khoom ua haujlwm ntawm tag nrho cov duab pixels ua ke. Qhov kev soj ntsuam zoo zuj zus, nrog lub sijhawm luv luv, ua rau cov duab ruaj khov ntawm lub vijtsam LCD. Peb hu rau scanning tsav txoj kev ntawm cov kua siv lead ua kua tso saib dynamic tsav txoj kev.