Ngemuva kweminyaka yokuthuthuka, isibonisi se-anode esijwayelekile se-LED senziwe uchungechunge lwezimboni oluzinzile, oluholele ekwandiseni isibonisi se-LED.Nokho, futhi inezihibe, izinga lokushisa kwesikrini ngokweqile kanye nokusetshenziswa kwamandla ngokweqile.Ngemuva kokuvela kobuchwepheshe bamandla obubonisi be-cathode be-LED obuvamile, budonse ukunaka okukhulu emakethe yokubonisa i-LED.Le ndlela yokunikeza amandla ingakwazi ukuzuza ukonga okukhulu kwamandla ka-75%, ngakho-ke buyini ubuchwepheshe bokunikezwa kwamandla kwesibonisi se-cathode LED evamile?Yiziphi izinzuzo zalobu buchwepheshe?
Yiziphi izinzuzo zobuchwepheshe bokunikezwa kwamandla kwesibonisi se-LED cathode evamile
1. Iyini isibonisi se-LED cathode evamile?
"I-Common cathode" ibhekisela endleleni evamile yokukhipha amandla e-cathode.Eqinisweni, lobu ubuchwepheshe bokonga amandla kwizibonisi ze-LED.Isho ukusebenzisa i-cathode evamile ukunika amandla isibonisi se-LED.U-B (obomvu, oluhlaza okotshani, oluhlaza okwesibhakabhaka) uhlukanisa ugesi, futhi usabalalisa ngokunembile amandla amanje kanye ne-voltage yobuhlalu besibani se-R, G, B, ngoba ubuhlalu besibani i-R, G, B (obomvu, obuluhlaza, obuluhlaza okwesibhakabhaka) budinga ukusebenza kahle kakhulu. I-voltage, futhi yamanje ihlukile, Ngakho-ke, i-current izodlula kuqala ubuhlalu besibani, bese ifinyelela esigxotsheni esibi se-IC, inciphisa ukwehla kwe-voltage phambili futhi inciphise ukumelana kwangaphakathi kwe-conduction.
2. Uyini umehluko phakathi kwe-cathode evamile kanye nezibonisi ze-LED ze-anode ezivamile?
①.Izindlela ezihlukene zokunikezwa kwamandla:
Indlela yokunikeza amandla e-cathode evame ukusetshenziswa ukuthi owamanje kuqala udlula ubuhlalu besibani bese ufinyelela esigxotsheni esingalungile sesekethe ehlanganisiwe, ukuze ukwehla kwamandla kagesi okuya phambili kube kuncane futhi ukumelana nokumelana kube kuncane.
I-anode evamile yindlela yamanje egeleza isuka ebhodini le-PCB iye ebuhlalu besibani, futhi inika amandla ngokulinganayo ku-R, G, B (obomvu, oluhlaza okotshani, oluhlaza okwesibhakabhaka), ukuze ukwehla kwamandla kagesi okuhamba phambili kwesekethe kube kukhudlwana.
②.I-voltage yokunikezwa kwamandla ihlukile:
I-cathode evamile, inikezela okwamanje kanye ne-voltage ye-R, G, B (ebomvu, eluhlaza, eluhlaza okwesibhakabhaka), ngokulandelana.Ama-LED abomvu, aluhlaza naluhlaza anezidingo ezahlukene zamandla kagesi.I-voltage yobuhlalu besibani esibomvu icishe ibe ngu-2.8V, kanti i-voltage yobuhlalu besibani obuluhlaza nokuluhlaza icishe ibe ngu-3.8V, lokhu kunikezwa kwamandla kungafinyelela ukunikezwa kwamandla okunembile kanye nokunikezwa kwamandla.Ngenxa yokulahlekelwa okuncane, ukushisa okukhiqizwa isibonisi se-LED ngesikhathi sokusebenza kuphansi kakhulu.
I-cathode evamile idinga ukunikeza u-R, G, B (obomvu, oluhlaza okotshani, oluhlaza okwesibhakabhaka) amandla ahlanganisiwe angaphezu kuka-3.8V (afana no-5V).Ngalesi sikhathi, i-voltage etholwe ngokubomvu, okuluhlaza okotshani nokuluhlaza iyunifomu engu-5V, kuyilapho ibomvu, iluhlaza okotshani, I-voltage esebenza kahle edingwa ubuhlalu besibani obuthathu obuluhlaza iphansi kakhulu kuno-5V.Ngokwefomula yamandla engu-P=UI, ngaphansi kwezimo eziqhubekayo zamanje, ukuphakama kwe-voltage, amandla amakhulu, okungukuthi, ukusetshenziswa kwamandla okukhulu, kuyilapho isibonisi se-LED sisebenza Ukushisa okwengeziwe kukhiqizwa kule nqubo.
3. Kungani ukushisa kwesibonisi se-LED esijwayelekile se-cathode siphansi?
Imodi ekhethekile yokuphakelwa kwamandla e-cathode yesikrini esibandayo yenza inqubo yokubonisa i-LED ikhiqize ukushisa okuncane nokukhuphuka okuphansi kwezinga lokushisa.Ngaphansi kwezimo ezijwayelekile, phakathi nebhalansi emhlophe nokudlalwa kwevidiyo, izinga lokushisa lesikrini esibandayo licishe libe ngu-20°C eliphansi kunalelo lesibonisi se-LED esivamile semodeli efanayo.Ngaphansi kokucaciswa okufanayo nokukhanya okufanayo, izinga lokushisa lesikrini lesibonisi se-LED esijwayelekile se-cathode lingaphansi kwamadigri angu-20 kunalelo lemikhiqizo yesibonisi ye-anode ye-LED evamile, futhi ukusetshenziswa kwamandla kungaphansi ngo-50% kunemikhiqizo yokubonisa ye-anode evamile ye-LED.
Izinga lokushisa eliphezulu lesikrini esibonisiwe se-LED kanye nokusetshenziswa kwamandla ngokweqile bekulokhu kuyizici ezibalulekile ezithinta impilo yesevisi yesikrini sokubonisa se-LED."I-Common cathode LED display" ingaxazulula lezi zinkinga ezimbili.
4. Yiziphi izinzuzo ezijwayelekile ze-cathode LED display?
Ukunikezwa kwamandla kwe-e konga ngempela amandla:
Imikhiqizo evamile ye-cathode isebenzisa ubuchwepheshe obunembile bokulawula amandla, ngokuya nezici ezihlukene ze-optoelectronic zemibala emithathu eyinhloko ye-LED ebomvu, eluhlaza okwesibhakabhaka, ehlanganiswe nesistimu yokulawula isibonisi ye-IC kanye nemodi yokuzinikela ezimele, ama-voltage ahlukene e-LED kanye nesekethe yokushayela inembile. eyabiwe, ukuze ukusetshenziswa kwamandla omkhiqizo kuphakeme kakhulu.Imikhiqizo efanayo emakethe yonga cishe ama-40%!
②.Ukonga amandla kwangempela kuletha umbala wangempela:
Indlela yokushayela ye-cathode ye-LED evame ukusetshenziswa ingalawula ngokuqondile amandla kagesi, kuyilapho inciphisa ukusetshenziswa kwamandla nokukhiqizwa kokushisa, ubude begagasi be-LED ngeke bukhukhuleke ngesikhathi sokusebenza okuqhubekayo, futhi umbala weqiniso ungaboniswa ngokuzinza!
③.Ukonga amandla kwangempela kuletha impilo ende:
Ukusetshenziswa kwamandla kuncishisiwe, ukukhuphuka kwezinga lokushisa kwesistimu kuncishiswe kakhulu, amathuba okulimala kwe-LED ancishiswa ngempumelelo, ukuzinza nokuthembeka kwalo lonke uhlelo lokubonisa kuyathuthukiswa, futhi impilo yesevisi yesistimu inwetshwa kakhulu.
5. Yiziphi izitayela kubuchwepheshe obujwayelekile obungalungile?
Kuhlobene nobuchwepheshe bokubonisa obujwayelekile be-cathode be-LED obufana nama-LED, izinsiza zikagesi, nama-IC omshayeli, akuvuthi njengochungechunge lwemboni ye-Ram LED.Ngaphezu kwalokho, uchungechunge lwamanje lwe-cathode IC oluvamile aluphelele, futhi ivolumu yokuthengisa iyonke ayinkulu.I-Ram isadla u-80% wemakethe.
Isizathu esiyinhloko sokuthuthukiswa kancane kobuchwepheshe obuvamile be-cathode okwamanje yizindleko eziphezulu zokukhiqiza.Ngokwesisekelo sokusebenzisana kwasekuqaleni kochungechunge lokuhlinzeka, i-cathode evamile idinga ukubambisana okwenziwe ngendlela oyifisayo kuzo zonke iziphetho zochungechunge lwezimboni njengama-chips, ukupakisha, nama-PCB, futhi izindleko ziphezulu.
Kule nkathi yesidingo esiphezulu kakhulu sokonga amandla, ukuvela kwesibonisi se-LED esinegethivu esisobala sekuyiphoyinti lokusekela lale mboni.Kodwa-ke, kusenendlela ende okufanele yenziwe ukuze kuzuzwe ukukhushulwa okuphelele nokusetshenziswa ngomqondo omkhulu, futhi imizamo ehlanganyelwe yemboni yonke iyadingeka.Isibonisi se-LED se-cathode esijwayelekile sibandakanya ukusetshenziswa kwamandla kagesi nezindleko zokusebenza, okuwumkhuba wokuthuthukisa ukonga amandla.Ngakho-ke, ukonga amandla kanye nokwehliswa kokusetshenziswa kuhlobene nezintshisakalo zabasebenzisi bokubonisa be-LED kanye nokusetshenziswa kwamandla kazwelonke.
Uma sibheka isimo samanje, isibonisi esijwayelekile se-cathode LED okonga amandla ngeke kwenyuse izindleko kakhulu uma kuqhathaniswa nesibonisi esivamile, futhi sizokonga izindleko ekusetshenzisweni kwesikhathi esizayo, okutholwa kahle yimakethe.
Isikhathi sokuthumela: Aug-06-2022
