IYINI i-LED?

I-LED imfushane nge-Light Emitting Diode.I-LED ikhipha ukukhanya ngenxa ye-luminescence kagesi.Kubuye kwaziwe ngokuthi "ukukhanya okubandayo" njengoba, ngokungafani nama-incandescent bulbs asekudala, ukukhanya akwenziwa ngokushisa i-filament yensimbi.I-diode, ngakolunye uhlangothi, ikhipha ukukhanya lapho igeleza kuma-semiconductors amabili aboshwe ngokukhethekile.Ingenye yezindlela ezonga kakhulu futhi ezonga amandla ukukhiqiza ukukhanya.

I-LED iqukethe izinto eziqinile ezingenazo izingxenye ezinyakazayo futhi ivame ukubunjwa ibe ipulasitiki esobala.Lokhu kuqinisekisa ukuqina okuphezulu.Uma i-LED ivuliwe, ikhipha ukushisa okucishe kube iqanda.Lokhu kunciphisa inkinga yokupholisa izingxenye ze-elekthronikhi.

I-LED yokuqala yadalwa umsunguli waseRussia u-Oleg Losev ngo-1927. Iminyaka eminingi, kwakungenzeka kuphela ukukhiqiza ama-LED e-infrared, abomvu naphuzi.Lawa ma-diode atholakala kukho konke kusukela kuzilawuli kude kuya kumarediyo wewashi.

Kwaze kwafika ngo-1994 lapho usosayensi waseJapane u-Shuji Nakamura ekwazi ukubonisa i-LED eluhlaza okwesibhakabhaka ephumelelayo.Ama-LED amhlophe naluhlaza alandela ngokushesha, abeka isisekelo soguquko lwe-LED esilubonile ekukhanyiseni nasekuboniseni ubuchwepheshe.

ISIBONISO SE-LED SISEBENZA KANJANI?

Isibonisi se-LED siqukethe ama-LED amaningi anezikhala eziseduze.Ngokushintsha ukukhanya kwe-LED ngayinye, ama-diode akha ngokuhlanganyela isithombe esibukweni.

Ukwakha isithombe sombala ogqamile, izimiso zokuhlanganisa umbala ongeziwe ziyasetshenziswa, lapho imibala emisha idalwe khona ngokuxuba ukukhanya ngemibala ehlukene.Isibonisi se-LED siqukethe ama-LED abomvu, aluhlaza naluhlaza afakwe ngephethini engashintshi.Le mibala emithathu ihlangana yakhe iphikseli.Ngokulungisa ukushuba kwama-diode, izigidigidi zemibala zingakhiwa.Uma ubheka isikrini se-LED usebangeni elithile, amaphikseli anemibala afanayo abonakala njengesithombe.

IYINI i-RGB?

I-RGB imfushane ngo-Red, Green and Blue.Kuwuhlelo lombala olusebenzisa iqiniso lokuthi yonke imibala ebonakalayoingaxutshwa kulezi ezintathu eziyisisekeloimibala.Isetshenziswa cishe kuzo zonke izinhlobo zokubonisa, okuhlanganisa nezibonisi ze-LED.

IYINI i-SMD?

I-SMD isho i-Surface Mount Device.Lezi yizici ze-elekthronikhi ezibekwe phezulu ngqo ebhodini lesifunda eliphrintiwe - hhayi njengangaphambili ngokusoda iphinikhodi yensimbi ngaphansi kwebhodi lesifunda.

Kubuchwepheshe bokubonisa i-LED, umqondo we-SMD usetshenziswa ngokuhlukile kancane.Isibonisi se-SMD yisibonisi se-LED lapho ama-diode abomvu, aluhlaza naluhlaza okwesibhakabhaka efakwe ebhodweni elincane lepulasitiki elifakwe phezulu emabhodini esekethe aphrintiwe esibonisi.Uma ama-diode ehlanganiswe ngale ndlela, athatha indawo encane kakhulu, okwenza kube lula ukukhiqiza izibonisi ezinezikhala ezincane phakathi kwama-diode nokucaca okuphezulu.

AMANINGI AMANDLA ISIBONISO SE-LED?

I-LED iwubuchwepheshe obuwonga kakhulu amandla, yingakho ukusetshenziswa okusabalele kwama-LED ukonga ama-bulb namuhla.Inani lamandla ama-diode ekusetshenzisweni kwesibonisi se-LED lincike ohlotsheni lwesibonisi, ukukhanya nokusetshenziswa.

Kunezinhlobo eziningi ezahlukene zama-LED nezibonisi.Ukusetshenziswa kwamandla kwesibonisi sasendlini, isibonelo, kuzohluka kuphawu lwedijithali lwangaphandle, okufanele lubonakale elangeni eliqondile.Ukukhanya kwesibonisi nakho kuyisici esikhulu.Izithombe kufanele zicace, kodwa ukukhanya okuvela esibukweni akufanele kukhazimule.Isibonisi se-LED sangaphandle sidinga ukukhanya kakhulu emini kunalapho kuba mnyama.

Okuboniswayo nakho kunomthelela.I-LED ibonisa izithombe ngokuvula nokulungisa ukukhanya kwama-diode anemibala.Ngakho-ke isithombe esimhlophe qwa esinombhalo omnyama sizodinga ama-diode amaningi akhanyayo - namandla amakhulu kakhulu - kunombhalo omhlophe kungemuva elimnyama.

INDLELA YOKUBONISWA KWE-LED KUDLA ISIKHATHI SANGAPHI?

Kunzima ukusho noma yini eqondile mayelana nempilo yesibonisi se-LED njengoba kunezici eziningi ezisebenzayo.Nokho, ngokulungiswa okufanele, isibonisi singahlala isikhathi esingaphezu kweminyaka eyishumi.Njengazo zonke izinhlobo zama-electronics, ubude bempilo buphinde buthintwa ukusetshenziswa kwansuku zonke kanye nendawo ezungezile yesibonisi.Izithombe ezikhanyayo nezinga eliphezulu lokukhanya kugqokwa kakhulu kusibonisi kunezithombe ezimnyama nezinga eliphansi lokukhanya.Izinto ezinjengomswakama kanye nosawoti osemoyeni nazo zingasebenza.

Kuyo yonke impilo yesibonisi se-LED, ukukhanya okuphuma kuma-diode kuzoncipha.Ngokungakanani kuncike ohlotsheni kanye nesizukulwane sama-diode.Izibonisi eziningi ze-LED azisebenzisi ukukhanya kwazo okugcwele, ngakho-ke ukunciphisa ngeke kube yinkinga.

IYINI I-PIXEL PITCH KANYE NESINQUMO SOKUBONISA?

Ibanga phakathi kwama-diode wesibonisi se-LED linquma ukulungiswa kwesibonisi.Ibanga eliya enkabeni yeqembu elingumakhelwane likalwa kusukela enkabeni yeqembu ngalinye lama-diode abomvu, aluhlaza okwesibhakabhaka.Leli banga laziwa ngokuthi iphikseli pitch.Iqembu ngalinye lama-diode lakha iphikseli.

Uma isibonisi se-LED sinokuphakama kwephikseli okungu-1 cm, kungase kube namaphikiseli angu-100 x 100 ngemitha yesikwele ngayinye yokuboniswa.Ukulungiswa kwesibonisi kunikezwa njengepheya yezinombolo ezibonisa ububanzi nobude ngamaphikseli.Uma unesikrini esingu-6 x 8-metres esino-1 cm ubude bephikseli, sinokulungiswa kwamaphikseli angu-600 x 800.

Kukhona izikrini ze-LED ezinokuphakama kwephikseli yanoma yikuphi ukusuka kumasentimitha ambalwa ukuya kumilimitha eyodwa.

YISIPHI ISINQUMO OKUMELE NGIYAKUKHETHA?

Ukulungiswa okudingayo kwesibonisi se-LED kuncike ebangeni lokubuka.Izithameli zakho zizobe ziwubuka ukuliphi ibanga?Uma useduze nesibonisi se-LED esinokulungiswa okuphansi (kude phakathi kwama-diode), kuzoba nzima ukubona ukuthi yini ekusibonisi.

Ngokuvamile kunokuxhumana phakathi kokulungiswa kwesibonisi kanye nentengo.Ukuphakama kwesinqumo, ama-diode amaningi akhona nge-m2 ngayinye - ngakho-ke intengo ephakeme ye-m2.

Uma ufaka uphawu lwedijithali ngomgwaqo omkhulu noma ku-facade yesakhiwo, luzobonakala ukusuka kude.Lapha, ukubonisa okunokulungiswa okuphezulu ngeke kudingeke - futhi kubize ngokungadingekile.Uma kuwumbukiso osezingeni eliphansi phakathi kwesitolo esikhulu, izethameli zizosondela kakhulu kuwo.Lapha, isibonisi esinokucaca okuphezulu sisebenza kahle kakhulu.

Umthetho omuhle wesithupha wezibonisi ze-LED uthi: 1 mm ubude bephikseli imitha ngayinye yebanga lokubuka.