Emsebenzini wesibonisi esinombala ogcwele we-LED, umsebenzi womshayeli we-IC ukuthola idatha yokubonisa (kusukela ekhadini elamukelayo noma iphrosesa yevidiyo neminye imithombo yolwazi) ehambisana nephrothokholi, ukukhiqiza ngaphakathi kwe-PWM kanye nezinguquko zesikhathi samanje, futhi uvuselele okukhiphayo nesikali esimpunga sokukhanya.kanye neminye imisinga ye-PWM ehlobene ukuze kukhanye ama-LED.I-IC eseduze ehlanganiswe umshayeli IC, i-logic IC kanye neswishi ye-MOS isebenza ndawonye kumsebenzi wesibonisi wesibonisi se-LED futhi inquma umphumela wokubonisa esiwulethayo.
Ama-chips omshayeli we-LED angahlukaniswa abe ama-chips enhloso ejwayelekile kanye nama-chips enhloso ekhethekile.
Okubizwa ngokuthi i-general-purpose chip, i-chip ngokwayo ayidizayinelwe ngokukhethekile i-LED, kodwa amanye ama-logic chips anemisebenzi ethile enengqondo yesibonisi sesikrini se-LED (njengerejista yochungechunge-2-parallel shift).
I-chip ekhethekile ibhekisela ku-chip yomshayeli eklanyelwe ngokukhethekile isibonisi se-LED ngokuvumelana nezici ezikhanyayo ze-LED.I-LED iyisisetshenziswa sesici samanje, okungukuthi, ngaphansi kwesisekelo se-saturation conduction, ukukhanya kwayo kushintsha ngokushintsha kwamanje, kunokuba kulungiswe i-voltage kuyo yonke.Ngakho-ke, esinye sezici ezinkulu ze-chip ezinikele ukuhlinzeka ngomthombo wamanje oqhubekayo.Umthombo wamanje ongashintshi ungaqinisekisa ukushayela okuzinzile kwe-LED futhi uqede ukucwayiza kwe-LED, okuyimfuneko ukuze isibonisi se-LED sibonise izithombe zekhwalithi ephezulu.Amanye ama-chips anezinjongo ezikhethekile futhi engeza imisebenzi ethile ekhethekile yezidingo zezimboni ezahlukahlukene, njengokutholwa kwephutha le-LED, ukulawulwa kwenzuzo yamanje kanye nokulungiswa kwamanje.
Ukuvela komshayeli IC:
Ngawo-1990s, izinhlelo zokusebenza zokubonisa i-LED zazibuswa umbala owodwa nophindwe kabili, futhi kwasetshenziswa ama-IC ashayela kagesi angashintshi.Ngo-1997, i-chip yokuqala yokulawula idrayivu engu-9701 yezibonisi ze-LED yavela ezweni lami, eyayisuka ku-16-level grayscale yaya ku-8192-level grayscale, ibona i-WYSIWYG yevidiyo.Ngokulandelayo, uma kubhekwa izici ezikhipha ukukhanya kwe-LED, umshayeli wamanje ongaguquki useyinketho yokuqala kumshayeli obonisa umbala ogcwele we-LED, kanti umshayeli wesiteshi esingu-16 onokuhlanganisa okuphezulu usethathe isikhundla somshayeli weziteshi ezingu-8.Ngasekupheleni kwawo-1990, izinkampani ezifana ne-Toshiba e-Japan, i-Allegro kanye ne-Ti e-United States yethula ngokulandelana ama-chips amanje okushayela e-LED angu-16.Ezinsukwini zanamuhla, ukuze kuxazululwe inkinga yezintambo ze-PCB yezibonisi ze-LED ze-pitch encane, abanye abakhiqizi be-IC babashayeli bethule ama-chips amanje amanje okushayela ahlanganisiwe angama-48 we-LED.
Izinkomba zokusebenza zomshayeli IC:
Phakathi kwezinkomba zokusebenza zesibonisi se-LED, izinga lokuvuselela, izinga elimpunga nokuvezwa kwesithombe kungenye yezinkomba ezibaluleke kakhulu.Lokhu kudinga ukuvumelana okuphezulu kwamanje phakathi kwamashaneli e-IC omshayeli wesibonisi we-LED, izinga lokuxhumana olunesivinini esikhulu kanye nesivinini sokuphendula esiqhubekayo samanje.Esikhathini esedlule, isilinganiso sokuvuselela, isikali esimpunga kanye nesilinganiso sokusetshenziswa kwakuwubudlelwano bokuhwebelana.Ukuqinisekisa ukuthi inkomba eyodwa noma ezimbili zingaba ngcono, kuyadingeka ukunikela ngokufanelekile izinkomba ezimbili ezisele.Ngalesi sizathu, kunzima ngezibonisi eziningi ze-LED ukuthi zibe nezindawo ezinhle kakhulu zomhlaba ezinhlelweni zokusebenza.Kuphakathi kokuthi izinga lokuvuselela alanele, futhi imigqa emnyama ijwayele ukuvela uma uthwebula ngemishini yekhamera enesivinini esikhulu, noma i-grayscale ayanele, futhi umbala nokukhanya akuhambisani.Ngokuthuthuka kobuchwepheshe babakhiqizi be-IC yabashayeli, kube khona impumelelo ezinkingeni ezintathu eziphezulu, futhi lezi zinkinga sezixazululiwe.
Ekusetshenzisweni kwesibonisi esinombala ogcwele we-LED, ukuze kuqinisekiswe ukunethezeka kwamehlo omsebenzisi isikhathi eside, ukukhanya okuphansi nokumpunga okuphezulu kube yindinganiso ebaluleke kakhulu yokuhlola ukusebenza komshayeli we-IC.
Isikhathi sokuthumela: Oct-09-2022