Gabatarwa na LVDS interface na TFT-LCD LCD allon

Ma'anar Interface LVDS

Ma'anar ma'anar mu'amala ta LVDS tana nufin aikin ƙarshen shigar LVDS a gefen ɓangaren LCD, wanda galibi ana iya koya ta hanyar tuntuɓar ainihin bayanan masana'anta na allon LCD (wanda galibi ake kira littafin ƙayyadaddun allo).Ko da yake ma'auni daban-daban na Ingilishi na aikin mu'amalar allo na LCD sun bambanta, amma ba shi da wahala a ga hakan, kuna yin la'akari da tsari na maɓalli da lambobi, Misali, wani allo na CLAA170EA02 samfurin LCD, Dubi teburin ma'anar dubawar da aka bayar. masana'anta, Kamar yadda ake iya gani daga ɗan gajeren ginshiƙi cikin Ingilishi, Tare da RXO da RXE, Kowane tashar yana da lambar "0″ ~ "3″ siginar bayanan rukuni, Kuma yana da siginar agogo 1 (RXOC ko RXEC), Wannan yana nuna cewa. allon LCD na 30-pin, dual, 8-bit allo, Hakanan ba shi da wahala a ga aikin fil ɗinsa, Wato “RXO0-” yana wakiltar saitin farko na bayanai 1-, “RXO0 +” yana nufin saitin farko. na bayanai: 1 +;"RXE0-" yana nuna saitin bayanai na biyu 1-, "RXE0 +" yana nuna saitin bayanai na biyu 1 +, Sauran, da sauransu.Abubuwan da ke cikin LVDs suna da kayan aikin lvds shine gajeriyar Ingilishi "low wutar lantarki daban-daban" wanda ke nufin siginar bambancin sigina.LVDS ta shawo kan rashin lahani na watsa babban ƙarfin wutar lantarki da kuma tsangwama na EMI a cikin yanayin matakin TTL, kuma yanayin watsa siginar bidiyo ne na dijital.Ƙididdigar fitarwa ta LVDS tana amfani da ƙarancin wutar lantarki (kimanin 350mV) don watsa bayanai ta bambanta akan wayoyi na PCB guda biyu ko biyu na igiyoyin ma'auni.Ƙididdigar LVDS tana watsa sigina akan PCB daban ko kebul na ma'auni a ƙimar ɗaruruwan megbits a cikin daƙiƙa guda.Saboda ƙarancin wutar lantarki da yanayin tuƙi na yanzu, yana da fa'idodin ƙarancin ƙararrawa da ƙarancin wutar lantarki.A cikin TV launi na LCD, layin LVDS yana amfani da kebul na ma'auni galibi, layin murɗaɗɗe ne a zahiri.The LVDS interface kewaye bangaren LCD launi TV ko nunin launi a farkon ƙaddamar da siginar shigarwa (kamar TV, AV, da sauransu), don samun siginar RGB, tsarin sarrafa shi daidai yake da TV ɗin launi na yau da kullun, kuma sannan ta hanyar juyawa RGB-LVDS, fitarwar siginar LVDS, aika zuwa allon LCD.Tun da TFT a cikin allon LCD yana gane siginar TTL (RGB), LVDS da aka aika zuwa allon LCD yana buƙatar yanke siginar TTL.Ana iya ganin cewa da'irar mu'amala ta LVDS ta ƙunshi sassa biyu: da'ira mai fitarwa ta LVDS a gefen uwa (LVDS transmitter), da na'urar shigar da shigar da LVDS (LVDS receiver) a gefen LCD panel.Tashar mai watsa LVDS tana jujjuya siginar TTL zuwa siginar LVDS, sannan kuma tana watsa siginar zuwa siginar LVDS da ke yanke IC akan gefen panel LCD ta hanyar kebul na jere ko kebul mai sassauƙa tsakanin faifan tuƙi da panel LCD), yana mai da siginar serial zuwa siginar layi ɗaya na matakin TTL, sannan aika shi zuwa sarrafa lokaci na LCD da da'irar tuƙi.