Taw qhia txog LVDS interface ntawm TFT-LCD LCD npo

LVDS Interface Txhais

LVDS interface txhais tau hais txog LVDS input kawg interface tus pin muaj nuj nqi ntawm lub LCD vaj huam sib luag sab, uas feem ntau tuaj yeem kawm los ntawm kev sab laj thawj lub Hoobkas cov ntaub ntawv ntawm LCD npo (feem ntau hu ua phau ntawv qhia zaub mov). Txawm hais tias cov qauv lus Askiv sib txawv ntawm LCD npo interface muaj nuj nqi sib txawv, Tab sis nws tsis nyuaj rau pom qhov ntawd, txiav txim siab los ntawm qhov kev txiav txim ntawm nws cov ntawv tseem ceeb thiab cov lej, Piv txwv li, qee yam CLAA170EA02 qauv LCD npo, Saib ntawm lub interface txhais lus muab los ntawm lub Cov chaw tsim khoom, Raws li tuaj yeem pom los ntawm kab lus luv luv hauv Lus Askiv, Nrog RXO thiab RXE, Txhua lub channel muaj tus lej "0" ~ "3" pawg cov ntaub ntawv teeb liab, Thiab muaj 1 teeb tsa lub moos (RXOC lossis RXEC), Qhov no qhia tau hais tias lub vijtsam LCD yog 30-pin, dual, 8-ntsis npo, Nws kuj tsis nyuaj rau pom nws tus pin muaj nuj nqi, Qhov ntawd yog, "RXO0-" sawv cev rau thawj cov ntaub ntawv 1-, "RXO0. +” txhais tau tias thawj cov ntaub ntawv: 1 +; "RXE0-" qhia cov ntaub ntawv thib ob 1-, "RXE0 +" qhia cov ntaub ntawv thib ob 1 +, Tus so, thiab lwm yam. LVDS interface nta LVDS yog lus Askiv luv luv "Low Voltage Differential Signaling" uas txhais tau hais tias lub teeb liab sib txawv qis. LVDS kov yeej qhov tsis zoo ntawm kev xa xov broadband siab siv hluav taws xob thiab EMI electromagnetic cuam tshuam hauv TTL qib hom, thiab yog hom digital video teeb liab kis tau tus mob. Lub LVDS tso zis interface siv lub viav vias qis heev (txog 350mV) los xa cov ntaub ntawv los ntawm qhov sib txawv ntawm ob lub PCB xov hlau lossis ob kab sib npaug. LVDS interface xa cov teeb liab ntawm qhov sib txawv PCB lossis sib npaug cable ntawm tus nqi ntau pua megbits ib ob. Vim yog qhov tsis tshua muaj hluav taws xob thiab tsis tshua muaj tsav tam sim no, nws muaj qhov zoo ntawm lub suab qis thiab kev siv hluav taws xob tsawg. Nyob rau hauv LCD xim TV, LVDS kab siv qhov sib npaug cable feem ntau, nws yog twisted khub kab tiag tiag. LVDS interface Circuit Court tivthaiv LCD xim TV lossis xim tso saib ntawm thawj qhov kev txiav txim siab ntawm cov tswv yim tawm tswv yim (xws li TV, AV, thiab lwm yam), kom tau txais RGB teeb liab, nws cov txheej txheem ua tiav yog tib yam li cov xim TV zoo tib yam, thiab tom qab ntawd los ntawm RGB-LVDS hloov dua siab tshiab, tso zis LVDS teeb liab, xa mus rau lub vijtsam LCD. Txij li thaum TFT hauv LCD npo tsuas paub txog TTL (RGB) teeb liab, LVDS xa mus rau lub vijtsam LCD yuav tsum txiav txim siab TTL teeb liab. Nws tuaj yeem pom tias LVDS interface Circuit Court suav nrog ob ntu: LVDS tso zis interface Circuit Court ntawm motherboard sab (LVDS transmitter), thiab LVDS input interface circuit (LVDS receiver) ntawm lub LCD vaj huam sib luag sab. Lub LVDS transmitting davhlau ya nyob twg hloov TTL teeb liab rau hauv LVDS teeb liab, thiab tom qab ntawd xa cov teeb liab mus rau LVDS txiav txim siab IC ntawm lub LCD vaj huam sib luag sab los ntawm kab kab los yog hloov tau yooj yim ntawm cov tsav vaj huam sib luag thiab LCD vaj huam sib luag), hloov cov teeb liab serial rau hauv ib qho kev sib piv ntawm TTL theem, thiab tom qab ntawd xa mus rau LCD lub sij hawm tswj thiab qib tsav Circuit Court.