Kumsebenzi we-LED yombala ogcweleyo, umsebenzi womqhubi we-IC kukufumana idatha yokubonisa (ukusuka kwikhadi elifumana ikhadi okanye iprosesa yevidiyo kunye neminye imithombo yolwazi) ehambelana neprotocol, ukuvelisa ngaphakathi kwe-PWM kunye nokutshintsha kwexesha langoku, kwaye uhlaziye imveliso kunye nokukhanya okungwevu.kunye neminye imisinga ye-PWM ehambelanayo yokukhanyisa ii-LEDs.I-peripheral IC eyenziwe ngumqhubi we-IC, i-logic ye-IC kunye ne-MOS switch isebenza kunye kumsebenzi wokubonisa wesiboniso se-LED kwaye imisela umphumo obonisayo.
Iitshiphusi zomqhubi we-LED zinokwahlulwa zibe ziitshiphusi ezinenjongo ngokubanzi kunye neetshiphusi ezinenjongo eyodwa.
I-chip ebizwa ngokuba yinjongo ngokubanzi, i-chip ngokwayo ayilungiselelwe ngokukodwa i-LED, kodwa ezinye iitshiphu ze-logic kunye nemisebenzi ethile ye-LED yesikrini sokubonisa (njenge-series-2-parallel shift register).
I-chip ekhethekileyo ibhekisela kwi-chip yomqhubi eyenzelwe ngokukodwa umboniso we-LED ngokweempawu ezikhanyayo ze-LED.I-LED sisixhobo sophawu lwangoku, oko kukuthi, phantsi kwesiseko sokuqhuba ukugcwala, ukukhanya kwayo kutshintsha ngokutshintsha kwangoku, kunokuba kulungiswe i-voltage kuyo yonke.Ke ngoko, enye yezona zinto zibalulekileyo ze-chip ezinikezelweyo kukubonelela ngomthombo okhoyo ngoku.Umthombo okhoyo wangoku unokuqinisekisa ukuqhuba okuzinzile kwe-LED kwaye uphelise ukubetha kwe-LED, eyona nto ifunekayo ukuze umboniso we-LED ubonise imifanekiso ephezulu.Ezinye iitshiphusi ezineenjongo ezizodwa zongeza imisebenzi ekhethekileyo kwiimfuno zamashishini ahlukeneyo, njengokubhaqwa kwempazamo ye-LED, ulawulo lokuzuza ngoku kunye nokulungiswa kwangoku.
Ukuvela komqhubi IC:
Kwiminyaka ye-1990, izicelo zokubonisa i-LED zazilawulwa nemibala eyodwa kunye nembini, kwaye i-ICs yomqhubi we-voltage eqhubekayo isetyenzisiweyo.Ngo-1997, i-chip yokuqala ezinikeleyo yokulawula i-drive chip 9701 yeziboniso ze-LED zavela kwilizwe lam, elisusela kwi-16-level grayscale ukuya kwi-8192-level grayscale, ukuqonda i-WYSIWYG yevidiyo.Emva koko, ngokujonga iimpawu ze-LED ezikhupha ukukhanya, umqhubi wangoku oqhubekayo uye waba yinto yokuqala yokukhetha umqhubi ogcweleyo we-LED, kunye nomqhubi we-16-channel kunye nokudibanisa okuphezulu kuthathe indawo yomqhubi we-8-channel.Ngasekupheleni kweminyaka yoo-1990, iinkampani ezifana neToshiba eJapan, iAllegro kunye neTi eUnited States zazisa ngokulandelelanayo iitshiphusi zokuqhuba ze-LED ezili-16.Kule mihla, ukuze kusonjululwe ingxaki yocingo lwe-PCB yemiboniso ye-LED encinci, abanye abavelisi be-IC bazise iitshiphusi zomqhubi zangoku ezidityanisiweyo ezingama-48.
Iimpawu zokusebenza zomqhubi IC:
Phakathi kwezalathi zokusebenza zomboniso we-LED, izinga lokuhlaziya, inqanaba elingwevu kunye nokubonakaliswa komfanekiso sesinye sezona zibonakaliso zibalulekileyo.Oku kufuna ukuhambelana okuphezulu kwangoku phakathi kwe-LED yokubonisa umqhubi we-IC amashaneli, izinga lonxibelelwano olukhawulezayo lonxibelelwano kunye nesantya sokuphendula ngokuqhubekayo.Ngaphambili, izinga lokuhlaziya, isikali esingwevu kunye nomlinganiselo wokusetyenziswa yayibubudlelwane borhwebo.Ukuqinisekisa ukuba enye okanye ezimbini zezibonakaliso zinokuba ngcono, kuyimfuneko ukunikela ngokufanelekileyo izikhombisi ezimbini eziseleyo.Ngesi sizathu, kunzima kwiziboniso ezininzi ze-LED ukuba zibe nezona hlabathi zibalaseleyo kwizicelo ezisebenzayo.Nokuba izinga lokuhlaziya alanelanga, kwaye imigca emnyama idla ngokubonakala xa idubula ngesixhobo sekhamera esinesantya esiphezulu, okanye i-grayscale ayanelanga, kwaye umbala kunye nokukhanya akuhambelani.Ngokuqhubela phambili kwethekhnoloji yabavelisi be-IC yabaqhubi, kuye kwakho ukuphumelela kwiingxaki ezintathu eziphezulu, kwaye ezi ngxaki ziye zasonjululwa.
Ekusetyenzisweni komboniso ogcweleyo we-LED, ukuze kuqinisekiswe ukuthuthuzela kwamehlo omsebenzisi ixesha elide, ukukhanya okuphantsi kunye negrey ephezulu ibe ngumgangatho obaluleke kakhulu wokuvavanya ukusebenza komqhubi we-IC.
Ixesha lokuposa: Oct-09-2022