iphepha_ibhena

Umqhubi we-IC Dlala indima ebalulekileyo kwiShishini lokuBonisa i-LED

Imveliso yomqhubi we-LED ngokuyintloko ibandakanya iitshiphusi zomqhubi we-row scan kunye neetshiphusi zomqhubi wekholamu, kunye namasimi abo esicelo ikakhuluIzikrini ze-LED zentengiso yangaphandle, iziboniso ze-LED zangaphakathikunye neziboniso ze-LED zokumisa ibhasi.Ngokombono wohlobo lokubonisa, lugubungela umboniso we-LED we-monochrome, umboniso we-LED wemibala emibini kunye nombala ogcweleyo we-LED.

Kumsebenzi womboniso ogcweleyo we-LED, 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 hlaziya 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 esikhokelwayo kwaye imisela umphumo womboniso owenzayo.

Iitshiphusi zomqhubi we-LED zinokwahlulwa zibe ziitshiphusi ezinenjongo ngokubanzi kunye neetshiphusi ezinenjongo eyodwa.

I-chip yenjongo jikelele, i-chip ngokwayo ayilwanga ngokukodwa ii-LEDs, kodwa ezinye iitshiphu ze-logic (ezifana ne-serial 2-parallel shift registers) kunye nemisebenzi ethile enengqondo yomboniso okhokelwayo.

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.

Ukuzivelela komqhubi we-ICs

Kwiminyaka ye-1990, izicelo zokubonisa i-LED zazilawulwa nemibala enye kunye nembini, kwaye i-ICs yomqhubi we-voltage eqhubekayo isetyenzisiweyo.Ngo-1997, ilizwe lam lavela i-chip yokuqala ezinikeleyo yokulawula i-9701 yomboniso we-LED, owawusuka 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 ukusombulula ingxaki yocingo PCBIziboniso ze-LED ezincinci, abanye abavelisi be-IC yomqhubi baye bazisa kakhulu i-48-channel ye-LED edibeneyo yomqhubi wangoku.

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.Ingaba izinga lokuhlaziya alanelanga, kwaye imigca emnyama iyakwazi ukubonakala phantsi kwezixhobo zekhamera ezikhawulezayo, okanye i-grayscale ayanele, kwaye umbala kunye nokukhanya akuhambelani.Ngokuqhubela phambili kwethekhnoloji yabavelisi be-IC yabaqhubi, kuye kwakho ukuphumelela kwiingxaki ezintathu eziphezulu, kwaye ezi ngxaki ziye zasonjululwa.Okwangoku, uninzi lweziboniso ze-SRYLED ze-LED zinezinga eliphezulu lokuhlaziya nge-3840Hz, kwaye akukho migca emnyama iya kuvela xa ifota ngezixhobo zekhamera.

3840Hz isiboniso se-LED

Iimpawu kwii-IC zabaqhubi

1. Ukonga amandla.Ukonga amandla kukufuna ngonaphakade ukuboniswa kwe-LED, kwaye ikwayinqobo ebalulekileyo yokuqwalasela ukusebenza komqhubi we-IC.Ukugcinwa kwamandla omqhubi we-IC ikakhulu kubandakanya imiba emibini.Enye kukunciphisa ngokusebenzayo umbane wenqaku loguqulo oluqhubekayo lwangoku, ngaloo ndlela kuncitshiswa unikezelo lwamandla lwesiqhelo lwe-5V ukuze lusebenze ngaphantsi kwe-3.8V;enye kukunciphisa amandla ombane osebenzayo kunye nokusebenza ngoku komqhubi we-IC ngokulungiselela i-algorithm ye-IC kunye noyilo.Okwangoku, abanye abavelisi baqalise umqhubi we-IC oqhubekayo kunye ne-voltage ephantsi ye-0.2V, ephucula izinga lokusetyenziswa kwe-LED ngaphezu kwe-15%.Amandla ombane ombane aphantsi kwe-16% kuneemveliso eziqhelekileyo zokunciphisa ukuveliswa kobushushu, ukwenzela ukuba ukusebenza kakuhle kwamandla okuboniswa kwe-LED kuphuculwe kakhulu.

2. Ukudityaniswa.Ngokuhla ngokukhawuleza kwepixel pitch yesiboniso se-LED, izixhobo ezipakishweyo eziza kuxhonywa kwindawo yeyunithi yokwandisa ngokuphindaphinda kwejometri, okwandisa kakhulu ukuxinana kwecandelo lomgangatho wokuqhuba wemodyuli.UkuthathaI-P1.9 encinci ye-LED Screennjengomzekelo, imodyuli ye-15-scan 160 * 90 idinga i-ICs yomqhubi wangoku we-180, ii-tubes ze-45, kunye ne-2 138s.Ngezixhobo ezininzi, indawo yocingo ekhoyo kwi-PCB ixinana kakhulu, inyusa ubunzima boyilo lwesekethe.Kwangaxeshanye, ulungelelwaniso oluxineneyo lwamacandelo lunokubangela lula iingxaki ezinjenge-solder engalunganga, kunye nokunciphisa ukuthembeka kwemodyuli.Kusetyenziswa ii-ICs zomqhubi ezimbalwa, kwaye iPCB inommandla omkhulu wocingo.Imfuno evela kwicala lesicelo inyanzelisa umqhubi we-IC ukuba aqalise indlela yobugcisa ehlangeneyo kakhulu.

ungenelelo IC

Okwangoku, ababoneleli be-IC abaphambili kumqhubi we-IC kushishino baye basungula ngokulandelelanayo ngokudibeneyo i-48-channel ye-LED eqhubekayo yomqhubi we-ICs, edibanisa iisekethe ezinkulu ze-peripheral kwi-wafer ye-IC yomqhubi, enokunciphisa ubunzima boyilo lwebhodi yesekethe ye-PCB. .Ikwanqanda iingxaki ezibangelwa bubuchule boyilo okanye umahluko woyilo lweenjineli ezivela kubavelisi abohlukeneyo.


Ixesha lokuposa: Mar-03-2022

Shiya uMyalezo Wakho