Chiyambi cha mawonekedwe a LVDS a chophimba cha TFT-LCD LCD

Tanthauzo la Chiyankhulo cha LVDS

Tanthauzo la mawonekedwe a LVDS limatanthauza ntchito ya LVDS yolowera kumapeto kwa mawonekedwe a pin kumbali ya LCD panel, yomwe nthawi zambiri imatha kuphunziridwa poyang'ana deta yoyambirira ya fakitale ya LCD screen (nthawi zambiri imatchedwa buku lofotokozera pazenera). Ngakhale miyezo yosiyanasiyana ya Chingerezi ya ntchito ya LCD screen interface ndi yosiyana, Koma sizovuta kuwona zimenezo, poyang'ana dongosolo la zilembo ndi manambala ake ofunikira, Mwachitsanzo, chophimba china cha CLAA170EA02 cha LCD, Yang'anani tebulo la tanthauzo la mawonekedwe lomwe laperekedwa ndi wopanga, Monga momwe zikuonekera kuchokera ku gawo lalifupi mu Chingerezi, Ndi RXO ndi RXE, Njira iliyonse ili ndi nambala ya "0″ ~ "3″ group data signal", Ndipo ili ndi seti imodzi ya zizindikiro za wotchi (RXOC kapena RXEC), Izi zikuwonetsa kuti chophimba cha LCD ndi chophimba cha 30-pin, chapawiri, cha 8-bit, Sizovutanso kuwona ntchito yake ya pin, Ndiko kuti, "RXO0-" ikuyimira seti yoyamba ya deta 1-, "RXO0 +" imatanthauza seti yoyamba ya deta: 1 +; "RXE0-" imasonyeza seti yachiwiri ya deta 1-, "RXE0 +" imasonyeza seti yachiwiri ya deta 1+, Zina zonse, ndi zina zotero. Mawonekedwe a LVDS ali ndi mawonekedwe a LVDS. LVDS ndi mawu achidule a Chingerezi akuti "Low Voltage Differential Signaling" omwe amatanthauza chizindikiro chosiyana cha kupanikizika kochepa. LVDS imagonjetsa zovuta zotumizira kugwiritsa ntchito mphamvu zambiri pa intaneti komanso kusokoneza kwa ma electromagnetic kwa EMI mu TTL level mode, ndipo ndi njira yotumizira chizindikiro cha kanema wa digito. Mawonekedwe a LVDS output amagwiritsa ntchito mphamvu yotsika kwambiri (pafupifupi 350mV) kuti atumize deta mosiyanasiyana pa mawaya awiri a PCB kapena zingwe ziwiri zolinganiza. Mawonekedwe a LVDS amatumiza chizindikirocho pa chingwe chosiyana cha PCB kapena chingwe cholinganiza pamlingo wa ma megbits mazana ambiri pa sekondi. Chifukwa cha mphamvu yotsika komanso mphamvu yotsika, ili ndi ubwino wa phokoso lochepa komanso mphamvu yotsika. Mu TV yamtundu wa LCD, mzere wa LVDS umagwiritsa ntchito chingwe cholinganiza makamaka, ndi mzere wopindika wa awiri. Chigawo cha LVDS interface cha LCD kapena chiwonetsero cha mitundu pa decoding yoyamba ya zizindikiro zolowera (monga TV, AV, ndi zina zotero), kuti apeze chizindikiro cha RGB, njira yake yogwiritsira ntchito imakhala yofanana ndi TV yamtundu wamba, kenako kudzera mu RGB-LVDS conversion, chizindikiro cha LVDS chotuluka, chimatumizidwa ku LCD screen. Popeza TFT mu LCD screen imangozindikira chizindikiro cha TTL (RGB), LVDS yotumizidwa ku LCD screen imafunika decoding chizindikiro cha TTL. Zikuoneka kuti LVDS interface circuit imaphatikizapo magawo awiri: LVDS output interface circuit kumbali ya motherboard (LVDS transmitter), ndi LVDS input interface circuit (LVDS receiver) kumbali ya LCD panel. LVDS transmitter terminal imasintha chizindikiro cha TTL kukhala chizindikiro cha LVDS, kenako imatumiza chizindikiro ku LVDS decoding IC kumbali ya LCD panel kudzera mu chingwe cha mzere kapena chingwe chosinthika pakati pa drive panel ndi LCD panel), kusintha chizindikiro cha serial kukhala chizindikiro chofanana cha mulingo wa TTL, kenako ndikuchitumiza ku LCD timing control ndi ranks drive circuit.