Mawonekedwe a chiwonetsero cha LED nthawi zonse amakhala ogwirizana kwambiri ndi chipangizo chaposachedwa, monga ghosting, mtanda wa pixel wakufa, otsika imvi, kuwunika koyamba kwamdima, kulumikizana kwakukulu, ndi zina zambiri, ndi kuyendetsa mizere kwakhala kosavuta. kusakatula chofunikira.Kusamala kwambiri.Ndi chitukuko cha kamvekedwe kakang'ono, zowonetsera za LED zimayikanso patsogolo zofunikira zoyendetsa mizere, kuchokera ku P-MOSFET yoyera kuti muzindikire kusintha kwa mizere, kuphatikizika kwapamwamba komanso kuyendetsa mizere yamphamvu yambiri.Mapangidwe ndi masankhidwe a madalaivala amakumananso ndi zovuta zazikulu zisanu ndi chimodzi monga kuchotsedwa kwa ghost, voteji ya bead reverse voliyumu, mbozi yaifupi, mtanda wotseguka, mtengo wa VF wa nyali ndi waukulu kwambiri, komanso kulumikizana kwakukulu.
Mzimu
Chinsalu cha jambulani chikasinthidwa, zimatenga nthawi kuti chosinthira cha PMOS chiyatse ndi kuzimitsidwa ndikutulutsa kwacharge pa parasitic capacitance Cr ya mzere wa mzere.Choncho, panthawi yomwe VLED ndi OUT zimatsegulidwa pamzere wotsatira, malipiro osatulutsidwa a VLED mu mzere wapitawo ndi Njira yoyendetsera.Row(n) ikayatsidwa, mzere wa parasitic capacitance Cr umaperekedwa ku kuthekera kwa VCC.Mukasinthira ku Row (n + 1), kusiyana komwe kungathe kupangidwa pakati pa Cr ndi OUT, ndipo mtengowo umatulutsidwa kudzera mu mikanda ya nyali, zomwe zimapangitsa kuwala kwa LED.
Chifukwa chake, mtengo wa Cr uyenera kutulutsidwa pasadakhale panthawi yosintha mzere.Nthawi zambiri, chubu chamzere chokhala ndi ntchito yophatikizika yophatikizika chimatha kutulutsa mwachangu mtengo wa parasitic capacitor Cr pomwe kusintha kumachitika powonjezera dera lotsitsa.M'munsi mphamvu Chikoka-pansi, ndiko kuti, m'munsi blanking voteji VH, mofulumira mlandu pa parasitic capacitance adzakhala kumasulidwa, ndi bwino zotsatira za kuchotsa zithunzi mzimu.Nthawi zambiri, VH Lamp bead reverse voltage
Mphamvu ya reverse impulse ya mikanda ya nyali imakhudza kwambiri moyo wautumiki wa mikanda ya nyali.Ma pixel akufa omwe amachititsidwa ndi kukakamizidwa kumbuyo nthawi zonse akhala akupweteka kwa chiwonetsero cha LED, makamaka phula laling'ono.
Pamene njira linanena bungwe chatsekedwa, ndi parasitic capacitance pa njira adzakhala mosalekeza mlandu chifukwa freewheeling zotsatira za parasitic inductance, kupanga kwambiri voteji glitch.Panthawi imeneyi, zimapanga n'zosiyana voteji yodzaza pa nyali mkanda ndi linanena bungwe la chubu mzere, kotero blanking voteji wa mzere chubu zimakhudza n'zosiyana voteji wa nyali mkanda pa nthawi yomweyo.Pamene voteji pa nthawi zonse panopa linanena bungwe kanjira ndi atakhazikika, kukwezera blank voteji wa mzere chubu, ang'onoang'ono n'zosiyana voteji wa nyali mkanda.Nthawi zambiri, voteji ya mkanda wa nyali ndi 5V.Zoyesedwa ndi wopanga, kukakamiza kumbuyo komwe kuli pansi pa 1.4V kumatha kuchepetsa kwambiri ma pixel akufa omwe amayamba chifukwa cha kukakamizidwa kumbuyo.Chifukwa chake, voteji yopanda kanthu singakhale yotsika kwambiri chifukwa cha vuto lakumbuyo kwa nyali.Osachepera VCC-2V.
Katsitsumzukwa kakang'ono
Kuwala kwa LED kukakhala kochepa, padzakhala chodabwitsa chachitali chowala, chomwe chimatchedwa mbozi yachifupi.Pamene mkanda wa nyali wa LED wapakati umakhala wozungulira, nyali ya nyali ya LED yomwe ili pamzere womwewo imapanga njira monga momwe tawonetsera pachithunzichi mukamajambula mzere.Ngati kusiyana kwamphamvu pakati pa VLED ndi point A ndikokulirapo kuposa mtengo wowunikira wa nyali ya LED, mzere wabwinobwino udzapangidwa.Mbozi yowala.
Kusiyana kwakukulu pakati pa mbozi yaifupi yozungulira ndi mtanda wotseguka ndikuti malinga ngati chinsalucho chili m'mawonekedwe, mbozi yachidule idzawoneka mosasamala kanthu kuti nyali ya LED ikuwonetsa chithunzi, ndi mbozi yotseguka. adzakhala ndi vuto lotseguka la mtanda pamene mkanda wotseguka wanyalitsidwa.Kawirikawiri poonjezera mzere chubu blanking voteji, kusiyana voteji ndi ang'onoang'ono kuposa LED kutsogolo voteji VF, ndiye VLED-VHVCC-1.4V angathe kuthetsa yochepa dera mbozi vuto.Pamene VCC-2V