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 daban-daban na Turanci matsayin LCD allon dubawa aiki ne daban-daban, amma ba wuya a ga cewa, yin hukunci da oda na key haruffa da lambobi, misali, wani CLAA170EA02 model LCD allo, Dubi dubawa ma'anar tebur bayar da manufacturer, Kamar yadda za a iya gani daga wani gajeren shafi a cikin Turanci, Tare da RXO da RXE, Kowane tashar yana da lambar "0″ da RXE, da kuma sigina na rukuni na 3. (RXOC ko RXEC), Wannan yana nuna cewa allon LCD 30-pin ne, dual, 8-bit, Hakanan ba shi da wahala a ga aikin fil ɗinsa, Wato “RXO0-” yana wakiltar saitin bayanan farko 1-, “RXO0 +” yana nufin saitin bayanai na farko: 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 siginar 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 nuni 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, sannan ta hanyar juyawa RGB-LVDS, fitarwa 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 ta aika da siginar zuwa LVDS decoding IC a gefen LCD panel ta hanyar kebul na jere ko kebul mai sassauƙa tsakanin faifan tuƙi da panel LCD), yana canza siginar siginar zuwa siginar daidaici na matakin TTL, sannan aika shi zuwa sarrafa lokaci na LCD da kewayar darajoji.