I-Led Display Basics
Isibonisi se-LED siyisibonisi sephaneli eyisicaba, esakhiwe ngamaphaneli amamojula amancanyana amaningi e-LED, asetshenziselwa ukubonisa umbhalo, izithombe, ividiyo, amasiginali wevidiyo neminye imishini yolwazi ehlukahlukene.
Isetshenziselwa kakhulu ukukhangisa kwangaphandle kwangaphakathi, ukubonisa, ukudlala, ingemuva lokusebenza nezinye izinjongo. Okuvame ukufakwa ezindaweni zentengiso, ama-facade wokwakha, eceleni komgwaqo wethrafikhi, izikwele zomphakathi, isiteji sasendlini, amagumbi enkomfa, izitudiyo, amahholo edili, izikhungo zokuyala nezinye izindawo, zidlala indima ekubonisweni.
Ⅰ. isimiso sokusebenza sesibonisi se-LED
Umgomo oyisisekelo wokusebenza wesibonisi se-LED ukuskena okunamandla. Ukuskena okunamandla kuhlukaniswe kwaba ukuskena komugqa kanye nokuskena kwekholomu ngezindlela ezimbili, indlela evame ukusetshenziswa ukuskena komugqa. Ukuskena kolayini kuhlukaniswe ngemigqa eyi-8 yokuskena nemigqa eyi-16.
Kumodi yokusebenza yokuskena komugqa, ucezu ngalunye lwesiqephu se-matrix yechashazi le-LED sinesethi yesekethe yekholomu yedrayivu, isekethe yedrayivu yekholomu kufanele ibe nerejista ye-latch noma ye-shift, esetshenziselwa ukukhiya okuqukethwe ukuze kuboniswe kudatha yemodi yamagama. Kumodi yokuskena komugqa wokusebenza, umugqa ofanayo we-LED dot-matrix ucezu lwezikhonkwane zokulawula umugqa wegama elifanayo zixhunywe ngokuhambisana emugqeni, ingqikithi yemigqa engu-8, futhi ekugcineni ixhunywe kumjikelezo wokushayela umugqa; Umjikelezo we-line drive kufanele ube ne-latch noma irejista ye-shift, esetshenziselwa ukukhiya isignali yokuskena umugqa.
I-LED display column drive circuit kanye ne-line drive circuit ngokuvamile kusetshenziswa isilawuli se-microcontroller, i-microcontroller evame ukusetshenziswa uchungechunge lwe-MCS51. Okuqukethwe kwesibonisi se-LED ngokuvamile kugcinwa ngendlela yemodi yamagama kumemori yedatha yangaphandle ye-microcontroller, igama elithi imodi iyinombolo kanambambili engu-8-bit.
Ⅱ. ulwazi oluyisisekelo lwesibonisi se-Led
1, yini i-LED?
I-LED iyisifinyezo se-diode ekhipha ukukhanya (LIGHT EMITTING DIODE), ngohlelo lwe-diode ekhipha ukukhanya elakhiwe idivayisi yokubonisa. Imboni yokubonisa ithe i-LED ibhekisa ku-LED ingakhipha amaza abonakalayo.
2, yini isibonisi se-LED?
Ngezindlela ezithile zokulawula, uhlelo lwedivayisi ye-LED lwakhiwe isikrini sokubonisa.
3, yini imojula yesibonisi se-LED?
Kukhona amasekhethi kanye nesakhiwo sokufaka sokunquma, ngemisebenzi yokubonisa, kungenziwa ngokusebenza okulula kokubonisa umhlangano weyunithi eyisisekelo.
4, Iyini imodyuli yesibonisi se-LED?
Kuhlanganiswe inombolo yamaphikseli wokuboniswa, azimele ngokwesakhiwo, kungakha iyunithi encane yesibonisi se-LED. Okujwayelekile 8 * 8, 8 * 7, njll.
5. Yini iphikseli pitch (iphimbo lamachashazi)?
Ibanga eliphakathi nendawo phakathi kwamaphikseli amabili ancikene, iphimbo elincane, liba lifushane ibanga elibonakalayo. Imboni ivamise ukufushaniswa ngo-P ukukhombisa isikhala samaphuzu.
6, Yini ukuminyana kwe-pixel?
Okwaziwa nangokuthi ukuminyana kwamachashazi, ngokuvamile kubhekisela enanini lamaphikseli ngemitha yesikwele ngayinye esibonisini.
7, Kuyini ukukhanya okukhanyayo?
Iyunithi yesibonisi se-LED ekhishwe amandla okukhanya, iyunithi iyi-CD / imitha yesikwele, ibekwe nje isibonisi semitha-skwele esikhishwe amandla okukhanya;
8, kuyini ukukhanya kwesibonisi se-LED?
Ukukhanya kwesibonisi se-LED kubhekisela ekusebenzeni okuvamile kwesibonisi, indawo yeyunithi yokubonisa yokuqina okukhanyayo, iyunithi yi-cd/m2 (okungukuthi, mangaki ama-cd okuqina okukhanyayo imitha yesikwele ngayinye yendawo yesibonisi.
11, Liyini izinga elimpunga?
Izinga elimpunga lesibonisi se-LED liyinkomba ebonisa ileveli yesithombe sesibonisi. Izinga elimpunga lesikrini sevidiyo livame ukuhlukaniswa ngamaleveli angu-64, amazinga angu-128, amazinga angu-256, amazinga angu-512, amazinga angu-1024, amazinga angu-2048, amazinga angu-4096 njalonjalo. Uma izinga lendawo empunga liphakeme, izinga lesithombe liyacaca, izinga le-grayscale elivamile elingu-256 noma ngaphezulu, umehluko wesithombe awumkhulu kakhulu.
12, yini umbala ombaxambili, umbala-mbumbulu, umbala ogcwele?
Ngokusebenzisa imibala ehlukene yama-diode akhipha ukukhanya angakhiwa ngezibonisi ezihlukene, umbala ombaxambili wakhiwe ngemibala emibili ebomvu, eluhlaza okotshani noma ephuzi-luhlaza, umbala mbumbulu wakhiwe ngokubomvu, ophuzi-oluhlaza okotshani, oluhlaza okwesibhakabhaka ngemibala emithathu ehlukene, egcwele. -umbala wakhiwe ngokubomvu, okuluhlaza okotshani, okuluhlaza okwesibhakabhaka okumsulwa ngemibala emithathu ehlukene.
13, yini moire?
Kusemsebenzini wokudubula wesibonisi se-LED esinemibala egcwele, isikrini esibonisiwe se-LED kuzoba nama-ripples amanzi angavamile, lawa ma-ripples amanzi ku-physics abizwa ngokuthi "moiré".
14, yini i-SMT, yini i-SMD?
I-SMT ubuchwepheshe obufakwe phezulu (i-SURFACE MOUNTED technology ngamafuphi), okwamanje iwubuchwepheshe obuthandwa kakhulu kanye nenqubo embonini yokuhlanganisa i-electronic; I-SMD iyidivayisi efakwe phezulu (idivayisi efakwe phezulu ngamafuphi).
Isibonisi se-LED siwuhlobo olusha lwemidiya yokubonisa ulwazi, ukulawula imodi yokubonisa i-diode ekhipha ukukhanya kwesikrini sokubonisa iphaneli eyisicaba, ingasetshenziswa ukubonisa umbhalo, ihluzo nezinye izinhlobo zolwazi olumile kanye nokugqwayiza, ividiyo nezinye izinhlobo ulwazi oluguquguqukayo, isibonisi se-elekthronikhi se-LED setha ubuchwepheshe be-microelectronics, ubuchwepheshe bekhompyutha, ukucutshungulwa kolwazi endaweni eyodwa, enemibala egqamile, ububanzi obuguquguqukayo, ukukhanya okuphezulu, impilo ende, ezinzile futhi enokwethenjelwa, njll. Izinzuzo, ezisetshenziswa kakhulu kwezokuxhumana, imakethe yokusebenza kwamasiko, izindawo zezemidlalo, ukusatshalaliswa kolwazi, ukukhishwa kwezindaba, ukuhweba ngezibambiso, njll., kungahlangabezana nezidingo zezindawo ezahlukahlukene. Ngokusho kombala wesisekelo sombala ungahlukaniswa ngokuboniswa kombala owodwa kanye nokuboniswa kombala ogcwele.
