Kuratidzwa kwemhando yekuratidzira kwe LED kwagara kuine hukama neiyo inogara iripo dhiraivha chip, senge ghosting, akafa pixel muchinjiko, yakaderera grey cast, rima rekutanga scan, yakakwira musiyano coupling, nezvimwewo, uye mutsara dhiraivha yagara iri nyore. scanning zvinodiwa.Kunyanya kutarisa.Nekuvandudzwa kwepitch diki, zviratidziro zve LED zvinoisawo kumberi kwepamusoro zvinodiwa pakutyaira, kubva paP-MOSFET yakachena kuona kuchinjika kwemitsara, kuenda kumubatanidzwa wepamusoro uye kune simba rakawanda rekutyaira mutsara.Dhizaini uye kusarudzwa kwevatyairi vemitsara zvakare vanotarisana nematambudziko makuru matanhatu akadai sekubvisa ghost, mwenje bead reverse voltage, kapfupi redunhu, muchinjiko wakavhurika, mwenje bead VF kukosha kwakakurisa, uye yakakwira kusiyana kwekubatanidza.
Mweya
Kana iyo scan screen yachinjika, zvinotora nguva kuti PMOS switch ibatidzwe nekudzimwa uye kuchaja kubuda paparasitic capacitance Cr yemutsetse wemutsara.Naizvozvo, panguva iyo VLED neOUT zvinobatidzwa mumutsara unotevera, iyo isina kuburitswa mutero weVLED mumutsetse wapfuura ndiyo Iyo conduction nzira.Kana Row(n) ikabatidzwa, mutsara weparasitic capacitance Cr unobhadhariswa kune iyo VCC inogona.Paunenge uchishandura kuRow (n + 1), mutsauko unogona kuumbwa pakati peCr neOUT, uye mutero unobudiswa kuburikidza nemarambi emarambi, zvichiita kuti chiedza che LED chive chisina kujeka.
Naizvozvo, kubhadharisa paCr kunoda kuburitswa pachine nguva panguva yekuchinja kwemutsara.Kazhinji, mutsara wechubhu ine yakasanganiswa blanking basa inogona kukurumidza kuburitsa kubhadharisa kweparasitic capacitor Cr kana switching inoitwa nekuwedzera dhizaini-pasi.Iyo yakaderera iyo yekudhonza-pasi inogona, kureva, iyo yakadzika blanking voltage VH, kukurumidza kuchaja paparasitic capacitance inoburitswa, uye zvirinani mhedzisiro yekubvisa zvipoko mifananidzo.Kazhinji, VH Lamp bead reverse voltage
Iyo reverse impulse voltage yemarambi mabhedhi inokanganisa zvakanyanya hupenyu hwesevhisi hwemarambi mabhero.Iwo mapixel akafa anokonzerwa nekumanikidzwa kwemashure agara ari iwo marwadzo ekuratidzwa kwe LED, kunyanya iyo diki pitch.
Kana iyo inobuda chiteshi ichivharwa, iyo parasitic capacitance pachiteshi icharamba ichichajwa nekuda kweiyo freewheeling mhedzisiro yeparasitic inductance, ichigadzira yakakwira voltage glitch.Panguva ino, inoumba reverse voltage yakatakurwa pabheji remwenje pamwe nekubuda kwechubhu yemutsara, saka iyo blanking voltage yechubhu yemutsara inokanganisa reverse voltage yerambi bead panguva imwe chete.Kana voltage iri painobuda chiteshi chiteshi ichigadziriswa, iyo inokwirisa blanking voltage yechubhu yemutsara, idiki reverse voltage yerambi bead.Kazhinji zita reverse reverse voltage yerambi bead ndeye 5V.Chaizvoizvo yakaedzwa nemugadziri, iyo yekumashure dzvinyiriro pazasi 1.4V inogona kuderedza zvakanyanya mapikseli akafa anokonzerwa nekumanikidzwa kwemashure.Naizvozvo, iyo blanking voltage haigone kuve yakaderera kune rambi bead back pressure dambudziko.Kwete pasi peVCC-2V.
Short circuit caterpillar
Kana iyo LED ipfupi-inotenderera, pachava nekureba kwakajeka chiitiko, icho chinowanzonzi pfupi-circuit caterpillar.Kana bhero remwenje re LED riri pakati rikatenderedzwa, bhero remwenje re LED riri mukoramu imwechete rinogadzira nzira sezvakaratidzwa pamufananidzo uri pazasi paunenge uchitarisa kumutsara.Kana mutsauko wekumanikidza pakati peVLED nepoinzi A wakakura kupfuura kukosha kwekuvhenekesa kwemwenje wemwenje we LED, koramu yakajairika inoumbwa.Bright gonye.
Musiyano mukuru pakati pehonye pfupi-yedunhu nemuchinjiko wakavhurika ndewekuti chero chidzitiro chiri munzvimbo yekuongorora, gonye pfupi-dunhu richaonekwa zvisinei nekuti mwenje wemwenje we LED unoratidza mufananidzo, uye gonye rakavhurika redunhu. inongova nedambudziko rakavhurika remuchinjikwa kana bhero remwenje rakashama rabatidzwa.Kazhinji nekuwedzera mutsetse chubhu blanking voltage, voltage musiyano idiki pane LED mberi voltage VF, kureva, VLED-VHVCC-1.4V anogona zvachose kugadzirisa pfupi-circuit gonye dambudziko.Kana VCC-2V