Gabatarwar LVDS interface na allon TFT-LCD LCD

Ma'anar Haɗin LVDS

Ma'anar hanyar sadarwa ta LVDS tana nufin aikin fil ɗin shigarwar ƙarshe na LVDS a gefen allon LCD, wanda gabaɗaya za a iya koyo ta hanyar duba bayanan masana'anta na asali na allon LCD (wanda galibi ake kira littafin ƙayyadaddun allo). Kodayake ma'aunin Turanci daban-daban na aikin hanyar sadarwa ta allo na LCD sun bambanta, Amma ba shi da wahala a ga hakan, idan aka yi la'akari da tsarin haruffan maɓallan sa da lambobi, Misali, wani takamaiman allon LCD na samfurin CLAA170EA02, Duba teburin ma'anar hanyar sadarwa da masana'anta suka bayar, Kamar yadda za a iya gani daga ɗan gajeren shafi a Turanci, Tare da RXO da RXE, Kowane tasha yana da lambar "0″ ~ "3″ siginar bayanai ta rukuni, Kuma yana da saitin siginar agogo 1 (RXOC ko RXEC), Wannan yana nuna cewa allon LCD allon fil 30 ne, biyu, 8-bit, Hakanan ba shi da wahala a ga aikin fil ɗin sa, Wato, "RXO0-" yana wakiltar saitin bayanai na 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. Tsarin LVDS yana nuna LVDS gajeriyar siginar Ingilishi ce "Ƙarancin Siginar Bambancin Wutar Lantarki" wanda ke nufin siginar bambancin ƙarancin matsin lamba. LVDS yana shawo kan rashin amfanin watsa babban amfani da wutar lantarki da tsangwama ta lantarki ta EMI a cikin yanayin matakin TTL, kuma yanayin watsa siginar bidiyo ne na dijital. Tsarin fitarwa na LVDS yana amfani da ƙaramin juyawar wutar lantarki (kimanin 350mV) don watsa bayanai ta hanyar bambanci akan wayoyi biyu na PCB ko kebul na daidaitawa guda biyu. Tsarin LVDS yana watsa siginar akan kebul na PCB ko kebul na daidaitawa a ƙimar ɗaruruwan megbits a cikin daƙiƙa. Saboda ƙarancin ƙarfin lantarki da yanayin tuƙi mai ƙarancin halin yanzu, yana da fa'idodin ƙarancin hayaniya da ƙarancin amfani da wutar lantarki. A cikin TV mai launi na LCD, layin LVDS yana amfani da kebul na daidaitawa galibi, layin biyu ne mai jujjuyawa a zahiri. TV mai launi na LCD ko nunin launi na LVDS a kan na'urar tantancewa ta farko ta siginar shigarwa (kamar TV, AV, da sauransu), don samun siginar RGB, tsarin sarrafa sa yana daidai da TV mai launi na yau da kullun, sannan ta hanyar juyawar RGB-LVDS, siginar fitarwa ta LVDS, da aka aika zuwa allon LCD. Tunda TFT a cikin allon LCD kawai tana gane siginar TTL (RGB), LVDS da aka aika zuwa allon LCD yana buƙatar tantance siginar TTL. Ana iya ganin cewa da'irar haɗin LVDS ta ƙunshi sassa biyu: da'irar haɗin fitarwa ta LVDS a gefen uwa (mai watsa LVDS), da kuma da'irar haɗin shigarwa ta LVDS (mai karɓar LVDS) a gefen kwamitin LCD. Tashar watsawa ta LVDS tana canza siginar TTL zuwa siginar LVDS, sannan tana aika siginar zuwa LVDS decoding IC a gefen kwamitin LCD ta hanyar kebul na layi ko kebul mai sassauƙa tsakanin kwamitin tuƙi da kwamitin LCD), tana canza siginar serial zuwa siginar layi ɗaya ta matakin TTL, sannan ta aika shi zuwa tsarin sarrafa lokaci na LCD da kuma da'irar tuƙi.