Kugaragaza ubuziranenge bwa LED yerekanwe buri gihe bifitanye isano ya hafi na chip ya buri gihe ya chip, nka umuzimu, pigiseli yapfuye yambukiranya, imvi zijimye zijimye, icuraburindi ryambere rya scan, guhuza cyane guhuza, nibindi, kandi umurongo wa disikuru yamye ari ibintu byoroshye Gusikana.Kwitabwaho cyane.Hamwe niterambere ryikibanza gito, ecran ya LED nayo yashyize imbere ibisabwa hejuru yo gutwara umurongo, kuva P-MOSFET yuzuye kugirango tumenye guhinduranya umurongo, kugeza murwego rwo hejuru hamwe nubushobozi bukomeye bwimikorere myinshi.Igishushanyo noguhitamo abashoferi kumurongo nabo bahura nibibazo bitandatu byingenzi nko kurandura umuzimu, urumuri rwamatara rwinyuma rwumubyigano, caterpillar yumuzunguruko mugufi, umusaraba ufunguye, itara ryamatara VF ni nini cyane, kandi guhuza cyane.
Umuzimu
Iyo scan ya ecran yahinduwe, bifata igihe kugirango PMOS ifungurwe kandi izimye kandi isohoka ryamafaranga kuri capacitance ya parasitike Cr yumurongo wumurongo.Kubwibyo, mugihe VLED na OUT ifunguye kumurongo ukurikira, amafaranga atarekuwe ya VLED kumurongo ubanza ni inzira yo kuyobora.Iyo Row (n) ifunguye, umurongo parasitike capacitance Cr yishyurwa kubushobozi bwa VCC.Iyo uhinduye Row (n + 1), itandukaniro rishobora kubaho hagati ya Cr na HANZE, kandi amafaranga asohoka binyuze mumasaro yamatara, bikavamo urumuri rwa LED.
Kubwibyo, amafaranga kuri Cr agomba gusohoka mbere mugihe cyo guhindura umurongo.Mubisanzwe, umurongo wumurongo ufite ibikorwa byuzuzanya birashobora gusohora byihuse amafaranga ya capacitor ya parasitike Cr mugihe guhinduranya bikorwa byongeweho gukurura umuzenguruko.Hasi imbaraga zo gukurura hasi, ni ukuvuga, munsi ya voltage yuzuye ya VH, niko byihuta kwishyurwa kuri capacitance ya parasitike izasohoka, kandi ningaruka nziza zo gukuraho amashusho yizimu.Mubisanzwe, VH Lamp isaro ihinduranya voltage
Umuvuduko winyuma wa voltage yamasaro yamatara agira ingaruka cyane mubuzima bwumurimo wamatara.Pigiseli yapfuye yatewe numuvuduko winyuma yamye ari ingingo zibabaza zerekana LED, cyane cyane ikibuga gito.
Iyo umuyoboro usohoka ufunzwe, ubushobozi bwa parasitike kumuyoboro bizahora byishyurwa bitewe ningaruka zo kwidagadura ziterwa na parasitike, bigakora umuyaga mwinshi cyane.Muri iki gihe, ikora voltage ihindagurika yapakiye kumasaro yamatara hamwe nibisohoka byumurongo wumurongo, bityo voltage yubusa yumurongo wumurongo igira ingaruka kumubyigano winyuma wurumuri rwamatara icyarimwe.Iyo voltage kumuyoboro uhoraho usohoka ikosowe, hejuru ya voltage yubusa yumurongo wumurongo, niko ntoya ihinduranya ya voltage yamasaro.Mubisanzwe nominal reverse voltage yumuriro wamatara ni 5V.Mubyukuri byageragejwe nuwabikoze, umuvuduko winyuma uri munsi ya 1.4V urashobora kugabanya cyane pigiseli yapfuye iterwa numuvuduko winyuma.Kubwibyo, voltage yuzuye ntishobora kuba hasi cyane kubibazo byumuvuduko wamatara.Ntabwo ari munsi ya VCC-2V.
Inzoka ngufi
Iyo LED ari umuzenguruko mugufi, hazabaho ibintu birebire bimurika, mubisanzwe byitwa caterpillar.Iyo urumuri rwa LED rwagati rwagati ruzengurutse, urumuri rwa LED mu nkingi imwe ruzakora inzira nkuko bigaragara ku gishushanyo gikurikira iyo gusikana ku murongo.Niba itandukaniro ryumuvuduko hagati ya VLED ningingo A iruta agaciro kumurika kumatara ya LED, hazashyirwaho inkingi isanzwe.Inyenzi zaka.
Itandukaniro rinini hagati yinzoka ngufi n’umuzunguruko ufunguye ni uko igihe cyose ecran izaba iri muri scanne, caterpillar ngufi izagaragara hatitawe ku kuba itara rya LED ryerekana ishusho, hamwe n’inyenzi zifunguye. bizagira ikibazo gifunguye gusa mugihe itara rifunguye ryaka.Mubisanzwe mukongera umurongo wa tube wuzuye voltage, itandukaniro rya voltage ni rito ugereranije na LED imbere ya voltage VF, ni ukuvuga, VLED-VHVCC-1.4V irashobora gukemura burundu ikibazo cya caterpillar kigufi.Iyo VCC-2V