Ngena emhlabeni weIzibonisi ze-LED, lapho iphikseli ngalinye liphila ngamandla ama-chips e-LED IC. Cabanga abashayeli bokuskena amarowu nabashayeli bamakholomu besebenza ndawonye ngaphandle komthungo ukuze bakhe iziboniso ezimangalisayo eziheha izethameli eziseduze nakude.
Kusuka kumkhuluamabhodi okukhangisa angaphandleemibukisweni yezitolo edonsa amehlo kanye nezikrini zasendlini ezicwebezelayo, ama-LED driver IC chips angamaqhawe angaculwa ngemuva kwesigcawu. Angamandla ashayelayo aqinisekisa ukuthi iphikseli ngalinye likhanya ngokugqamile, kungakhathaliseki ukuthi kuwumbala owodwa, umbala okabili, noma isibonisi esinombala ogcwele.
Kodwa enzani ngempela la ma-chips?
Iyini i-LED IC Chip?
Emhlabeni wemibala egcweleIzibonisi ze-LED, indima ye-chip ye-LED IC ilula kodwa ibalulekile: ukuthola idatha, ukukhiqiza amasignali anembayo e-PWM, nokulawula ukugeleza kwamanje ukuze kukhanye i-LED ngayinye ngokunemba. Kuyinhlanganisela evumelanayo yobuchwepheshe, ehlela ibhalansi ekahle yokukhanya nezilinganiso zokuvuselela ukuze lethe izithombe ziphile.
Bese kuba nama-ICs aseduze—amaqhawe angaculwa anezela ukujula nobukhulu kusibonisi. Kusukela kuma-ICs okunengqondo kuye kumaswishi e-MOS, ayizithako eziyimfihlo ezikhuphula okwenziwayo okubukwayo kuye kumaleveli amasha.
Akuwona wonke ama-LED IC chips adalwe alingana. Ezinye zenzelwe ukusetshenziswa okuvamile, kanti ezinye zicushwe kahle ukuze kusetshenziswe izinhlelo ezithile. Kuyizwe lamathuba angapheli, lapho ukusungula izinto ezintsha kuhlanganiswa khona ukuze kwakhe izibonisi ezihehayo nezimangazayo.
Manje, faka umhlaba wama-chips akhethekile—izimangaliso eziklanywe ngokwezifiso ezivula amandla aphelele ezikrini zokubonisa ze-LED. Nansi i-scoop: Ubuchwepheshe be-LED busebenza ngendlela yabo ehlukile. Ngokungafani namadivayisi endabuko, ama-LED ancike ekugelezeni kwamanje okuzinzile, hhayi ekushintsheni kwamandla kagesi.
Yilapho ama-chips akhethekile akhanya khona. Inhloso yabo? Ukuhlinzeka ngomthombo wamanje oqhubekayo. Kungani lokho kubalulekile? I-current ezinzile isho ukuzinzaAma-LED, kanye nama-LED azinzile asho ukubonwa okungenasici okwenza kujabulise futhi kuhlabe umxhwele.
Lawa ma-chips e-LED IC awavamile neze. Ezinye ziza nezici ezengeziwe ezenzelwe izimboni ezithile, njengokutholwa kwephutha le-LED, isilawuli samanje, kanye nokulungiswa kwamanje, okwengeza isendlalelo esengeziwe sokunemba.
Umlando we-LED IC Chip
Thatha uhambo olubuyela ngeminyaka yawo-1990s, lapho izikrini zokubonisa ze-LED zazisanda kuqala ukuba nomfutho. Ngaleso sikhathi, konke kwakumayelana nokuboniswa kombala owodwa nombaxambili, okunama-ICs avamile okushayela i-voltage ekhanda.
Kwathi ngo-1997, kwaba noshintsho olukhulu lapho i-China yethula i-9701—umshini omusha okhethekile wokushayela nokulawulaIsibonisi se-LEDizikrini. Ngokugxuma okumangalisayo kusuka kumazinga ampunga angu-16 kuya ku-8192, le chip iguqule ukucaca kwevidiyo, yashintsha "okubonayo yilokho okutholayo" kube iqiniso elibambekayo.
Njengoba ubuchwepheshe be-LED buthuthuka, kanjalo nabashayeli ababeyinika amandla. Idrayivu yamanje eqhubekayo ngokushesha yaba indinganiso yezibonisi ze-LED ezinombala ogcwele, eziqondana kahle nezici ezihlukile zama-LED. Ngokukhula kwesidingo, ukuhlanganiswa kwanda, futhi amadrayivu eziteshi ezingu-16 maduzane adlula ezandulele zawo ezineziteshi ezingu-8.
Ngokushesha phambili kuze kube namuhla, lapho ukuqanjwa kabusha kuqhubeka nokuphula imingcele. Ukuze kuxazululwe izinselele zokufakwa kwezintambo ze-PCB kuzibonisi ze-LED zamaphikseli amancane, abakhiqizi be-IC abashayeli bacindezela imikhawulo ngama-chips amanje amanje omshayeli ahlanganiswe kakhulu angama-48 eziteshi ze-LED. Kuwumfanekiso womhlaba ohlale uvela wobuchwepheshe be-LED, lapho okuwukuphela kwesithiyo esiwumcabango wethu.
Izinkomba Zokusebenza Kwe-IC IC
Masingene enhliziyweni yezikrini zokubonisa ze-LED, lapho izinkomba zokusebenza ezibalulekile njengezinga lokuvuselela, indawo empunga, nokugqama kwesithombe kuthatha indawo emaphakathi. Cabanga ngalokhu: inhlanganisela evumelanayo yokungaguquguquki okuphezulu kwamanje, ukuxhumana okusheshayo, kanye nesivinini esisheshayo esisheshayo sokuphendula—konke kusebenza ndawonye ukuze kwakhe izithombe ezibukwayo eziheha ababukeli.
Esikhathini esidlule, ukuzuza ukuvumelana okuphelele phakathi kwesilinganiso sokuvuselela, isikali esimpunga, nezinga lokusebenzisa kwakuwumgomo onzima. Kwadingeka ukuthi kwenziwe ukuyekethisa—izilinganiso zokuvuselela zawa kancane, okubangele imigqa emnyama engathandeki ezithombeni zekhamera ezinesivinini esikhulu, noma ukonakala okumpunga, okuholela ekukhanyeni kombala okungahambisani.
Faka iminyaka yempumelelo yezobuchwepheshe. Ngenxa yezinqubo ezintsha ezivela kubakhiqizi be-IC yabashayeli, okwake kwenzeka kwaba ngokoqobo. Amazinga aphezulu okuvuselela, indawo empunga engenasici, nokukhanya kombala ogqamile manje kuhambisana kahle, okuvula indlela yezibonisi ezishiya izethameli zibambe ongezansi.
Ngokuboniswa kwe-LED enombala ogcwele, ukunethezeka komsebenzisi kubaluleke kakhulu. Kungakho ukuzuza ibhalansi ethambile yokukhanya okuphansi kanye ne-grayscale ephezulu sekuyisivivinyo esikhulu sokushayela ukusebenza kwe-IC. Kuwubufakazi bokuphishekela okungapheli kokuphumelela emhlabeni ohlale uthuthuka wobuchwepheshe be-LED.
Izinzuzo Zokusebenzisa I-LED IC Chip
Uma usebenzisa i-chip ye-LED IC, kunezinzuzo ezimbalwa ongazijabulela futhi uzuze kuzo. Nazi ezinye okufanele uziqaphele:
Amandla Onga Amandla
Ake sikhanyise ekuphokopheleni ukonga amandla kuzibonisi ze-LED—uhambo lapho ukusungula kuhlangabezana nokusimama, futhi yonke i-watt ibalulekile.
Ezweni lamandla aluhlaza, ukonga amandla akuwona nje umgomo; kuyindlela yokuphila. Uma kukhulunywa ngezibonisi ze-LED, ukusebenza kokushayela ama-IC kuncike ekhonweni lawo lokunciphisa ukusetshenziswa kwamandla ngaphandle kokudela okukhiphayo.
Ngakho bakufeza kanjani lokhu? Konke kumayelana nokubhekana nokonga amandla ngama-engeli amabili ayinhloko:
Okokuqala, kugxilwe ekwehliseni i-voltage yephoyinti le-inflection yamanje engashintshi. Ngokwehlisa ugesi ovamile we-5V ube ngaphansi kuka-3.8V, ukushayela ama-IC kuvula indlela yokusebenzisa amandla ngokuphumelelayo.
Abakhiqizi bathatha igxathu eliya phambili ngama-tweaks e-algorithm ahlakaniphile kanye nokuthuthukiswa kwedizayini. Abanye baze bethule ama-IC okushayela akhona njalo ane-voltage eguqukayo ephansi ngendlela emangalisayo engu-0.2V nje—okuthuthukisa amazinga okusetshenziswa kwe-LED ngaphezu kuka-15% nokunciphisa amandla kagesi ngo-16%.
Kodwa nakhu okusontayo: ukonga amandla akukhona nje ukunqamula amakhona—kumayelana nokunemba. Ngokunikeza amandla ngokuhlukana kobuhlalu besibani obubomvu, obuluhlaza, nobuhlaza okwesibhakabhaka, ukushayela ama-ICs kuqinisekisa ukuthi i-voltage kanye namanje kusatshalaliswa ngokunemba kokuhlinzwa. Umphumela? Ukusetshenziswa kwamandla okuncishisiwe, ukukhiqizwa kokushisa okuncishisiwe, kanye nekusasa eliqhakazile lezibonisi ze-LED.
Ukufuna ukusebenza kahle kwamandla akulona nje uhambo—kuwuguquko. Futhi ngenqubekelaphambili ngayinye, sisondela eduze kwekusasa eliluhlaza, elizinzile.
Ukuhlanganiswa Okuhle Kakhulu
Zibone ngeso lengqondo ungena emhlabeni wezikrini zokubonisa ze-LED, lapho iphikseli ngalinye lipakisha khona futhi zonke izingxenye zibalulekile. Njengoba isikhala samaphikseli sincipha ngesivinini esisheshayo, inani lamadivayisi okupakisha endaweni ngayinye liyenyuka, lidale ukuminyana okudidayo kwezingxenye endaweni yokushayela yamamojula e-LED.
Thatha i-P1.9I-LED enephikseli encanenjengesibonelo. Ngokuskena kwayo okungu-15 kanye nemojula engu-160 × 90, idinga ama-IC amanje amakhulu angu-180 okushayela, amashubhu olayini angu-45, kanye nama-138 amabili. Lokho amagiya amaningi apakishwe endaweni eqinile, eguqula izintambo ze-PCB zibe umdlalo wezinga eliphezulu we-Tetris.
Ngobunzima obukhulu kuza nengozi enkulu. Izingxenye eziminyene zipela inkinga, kusukela ekushiseleni okubuthakathaka kuya ekuncipheni kokwethembeka kwemojuli—yikes! Faka amaqhawe ehora: ama-IC abashayeli abahlanganisayo. Ngama-IC ambalwa adingekayo kanye nendawo enkulu yezintambo ze-PCB, lawa mashiphu ahlangabezana nesidingo esikhulayo semiklamo esebenza kahle, ethembekile.
Namuhla, abahlinzeki be-chip ye-LED IC abahamba phambili baphendula ucingo, bakhipha ama-chips amanje omshayeli we-LED angu-48 apakisha i-punch enzima. Ngokuhlanganisa amasekhethi azungezile ngqo ku-wafer ye-IC yomshayeli, aqondisa idizayini ye-PCB futhi anqande ubuhlungu bekhanda obubangelwa ukungafani kobunjiniyela.
Isiphetho
Emhlabeni wezibonisi ze-LED, lapho ukuqanjwa kuhlangana nomcabango, i-chip ye-LED IC ethobekile ima njengeqhawe elingaculwa. Lawa ma-chips ahlanganisa i-symphony yamaphikseli, aqinisekisa ukuthi wonke umbala, yonke imininingwane, ikhanya ngobuhlakani obucacile. Kungakhathaliseki ukuthi amabhodi okukhangisa angaphandle amade noma izikrini zasendlini ezicwebezelayo, ama-chip driver e-LED akha umgogodla wezinto ezibonakalayo eziheha izethameli emhlabeni jikelele.
Ngakho-ke, yini eyenza lawa ma-chips ahluke? Zakhelwe ukuzivumelanisa nezimo futhi ziguquke nezikhathi. Kusukela ezinsukwini zokuqala zokuboniswa kombala owodwa nombaxambili kuya kubuchwepheshe obuthuthukisiwe esinabo namuhla, ama-LED IC chips ahlala ephethe izintambo zokuqamba izinto ezintsha. Ziguqule indlela esizizwisa ngayo ezibukwayo, zingenisa inkathi lapho iphikseli ngalinye lixoxa indaba futhi isibonisi ngasinye sidala umuzwa ogxilile, oshukumisayo.
Isikhathi sokuthumela: Dec-21-2024