Ngemuva kweminyaka yokuthuthuka, i-anode evamile ye-anode LED yakhe uchungechunge lwezimboni oluzinzile, olushayela ukuthandwa kwezibonisi ze-LED. Kodwa-ke, futhi inobubi bokushisa kwesikrini esiphezulu kanye nokusetshenziswa kwamandla ngokweqile. Ngemuva kokuvela kobuchwepheshe obujwayelekile be-cathode LED ukubonisa amandla, kudonse ukunaka okukhulu emakethe yokubonisa i-LED. Le ndlela yokuhlinzeka ngogesi ingakwazi ukuzuza ukonga ugesi okuphezulu okungama-75%. Ngakho-ke yini i-cathode evamile ye-LED yokubonisa ubuchwepheshe bokuhlinzeka amandla? Yiziphi izinzuzo zalobu buchwepheshe?
1. Iyini i-LED ye-cathode evamile?
I-“Common cathode” ibhekisela endleleni evamile yokunikeza amandla e-cathode, empeleni okuwubuchwepheshe okonga amandla ezikrinini zokubonisa ze-LED. Kusho ukusebenzisa indlela evamile ye-cathode ukunika amandla isikrini sokubonisa se-LED, okungukuthi, i-R, G, B (ebomvu, eluhlaza, eluhlaza okwesibhakabhaka) yobuhlalu besibani se-LED inikwa amandla ngokuhlukana, futhi yamanje kanye ne-voltage yabelwa ngokunembile i-R. , G, B ubuhlalu besibani ngokulandelana, ngoba i-voltage yokusebenza efanele kanye namanje edingekayo yi-R, G, B (obomvu, obuluhlaza, obuhlaza okwesibhakabhaka) ubuhlalu besibani buhlukile. Ngale ndlela, okwamanje kuqala kudlula ubuhlalu besibani bese kuthi ku-electrode engalungile ye-IC, ukwehla kwe-voltage phambili kuzoncishiswa, futhi ukumelana kwangaphakathi kwe-conduction kuzoba kuncane.
2. Uyini umehluko phakathi kwe-cathode evamile nama-LED anode avamile?
①. Izindlela ezihlukene zokunikezwa kwamandla:
Indlela evamile yokunikezwa kwamandla e-cathode ukuthi yamanje kuqala idlula ebuhlalu besibani bese ifika esigxotsheni esibi se-IC, esinciphisa ukwehla kwe-voltage phambili kanye nokumelana kwangaphakathi kwe-conduction.
I-anode evamile ukuthi i-current igeleza isuka ebhodini le-PCB iye kubuhlalu besibani, futhi inikeza amandla ku-R, G, B (obomvu, oluhlaza okotshani, oluhlaza okwesibhakabhaka) ngokufanayo, okuholela ekwehleni okukhulu kwe-voltage eya phambili kusekethe.
②. I-voltage yokuphakelwa kwamandla ehlukile:
I-cathode evamile, izohlinzeka yamanje kanye ne-voltage ku-R, G, B (obomvu, oluhlaza, oluhlaza okwesibhakabhaka) ngokwehlukana. Izidingo zama-voltage zobuhlalu besibani obubomvu, obuluhlaza nohlaza okwesibhakabhaka zihlukile. Isidingo sikagesi sobuhlalu besibani esibomvu sicishe sibe ngu-2.8V, kanti isidingo samandla kagesi wobuhlalu besibani esiluhlaza okwesibhakabhaka sicishe sibe ngu-3.8V. Ukunikezwa kwamandla okunjalo kungafinyelela ukunikezwa kwamandla okunembile kanye nokusetshenziswa kwamandla okuncane, futhi ukushisa okukhiqizwa yi-LED ngesikhathi somsebenzi kuphansi kakhulu.
I-anode evamile, ngakolunye uhlangothi, inikeza u-R, G, B (obomvu, oluhlaza okotshani, oluhlaza okwesibhakabhaka) i-voltage engaphezu kuka-3.8V (efana no-5V) ukuze kutholakale amandla ahlanganisiwe. Ngalesi sikhathi, i-voltage etholwe ngokubomvu, okuluhlaza okotshani noluhlaza okwesibhakabhaka iyi-5V ehlanganisiwe, kodwa i-voltage yokusebenza efanele edingwa ubuhlalu besibani obuthathu iphansi kakhulu kuno-5V. Ngokusho kwefomula yamandla engu-P=UI, lapho i-current ihlala ingashintshiwe, ukuphakama kwe-voltage, amandla aphezulu, okungukuthi, amandla asetshenziswa kakhulu. Ngesikhathi esifanayo, i-LED izophinde ikhiqize ukushisa okwengeziwe phakathi nomsebenzi.
IIsikrini se-Global Third-Generation Outdoor LED Sokukhangisa Sithuthukiswe yi-XYGLED, ithatha i-cathode evamile. Uma kuqhathaniswa nezingu-5V ezivamile ezikhipha ukukhanya okukhanyayo okubomvu, okuluhlaza okotshani, nokuluhlaza okwesibhakabhaka, isigxobo esihle sechip LED esibomvu singu-3.2V, kuyilapho ama-LED aluhlaza naluhlaza engu-4.2V, anciphisa ukusetshenziswa kwamandla okungenani ngo-30% futhi abonisa amandla amahle kakhulu- ukonga kanye nokusebenza kokunciphisa ukusetshenziswa.
3. Kungani isibonisi se-LED se-cathode esivamile sikhiqiza ukushisa okuncane?
Imodi ekhethekile yokuphakelwa kwamandla e-cathode yesikrini esibandayo yenza isibonisi se-LED sikhiqize ukushisa okuncane nokukhuphuka kwezinga lokushisa eliphansi ngesikhathi sokusebenza. Ngaphansi kwezimo ezijwayelekile, esimweni sebhalansi emhlophe futhi lapho udlala amavidiyo, izinga lokushisa lesikrini esibandayo licishe libe ngaphansi kuka-20℃ kunalelo lesibonisi se-LED esivamile sangaphandle semodeli efanayo. Ngemikhiqizo yokucaciswa okufanayo kanye nokukhanya okufanayo, izinga lokushisa lesikrini lesibonisi se-LED cathode elivamile lingaphansi kwama-degree angu-20 ngaphansi kwalelo lemikhiqizo yokubonisa ye-anode evamile ye-anode ye-LED, futhi ukusetshenziswa kwamandla kungaphansi kuka-50% kunalokho. yemikhiqizo evamile yesibonisi se-anode ye-LED evamile.
Izinga lokushisa elidlulele namandla okusetshenziswa kwesibonisi se-LED bekulokhu kuyizici ezibalulekile ezithinta impilo yesevisi yemikhiqizo yokubonisa ye-LED, futhi "i-common cathode LED display" ingaxazulula lezi zinkinga ezimbili kahle kakhulu.
4. Yiziphi izinzuzo zesibonisi se-LED cathode evamile?
①. Ukunikezwa kwamandla okunembile konga ngempela amandla:
Umkhiqizo ojwayelekile we-cathode usebenzisa ubuchwepheshe obunembile bokulawula ukuphakelwa kwamandla, ngokusekelwe ezicini ezihlukile ze-photoelectric zemibala emithathu eyinhloko ye-LED ebomvu, eluhlaza okwesibhakabhaka, eluhlaza okwesibhakabhaka, futhi ifakwe uhlelo oluhlakaniphile lokulawula isibonisi se-IC kanye nesikhunta esizimele sokwaba ngokunembile ama-voltages ahlukene. ku-LED kanye nesekethe yedrayivu, ukuze ukusetshenziswa kwamandla omkhiqizo kucishe kube ngama-40% aphansi kunalawo emikhiqizo efanayo emakethe!
②. Ukonga amandla kwangempela kuletha imibala yangempela:
Indlela evamile yokushayela ye-cathode ye-LED ingakwazi ukulawula ngokunembile i-voltage, enciphisa ukusetshenziswa kwamandla nokukhiqiza ukushisa. Ubude begagasi be-LED abukhukhuleki ngaphansi kokusebenza okuqhubekayo, futhi umbala weqiniso uboniswa ngokuzinzile!
③. Ukonga amandla kwangempela kuletha impilo ende:
Ukusetshenziswa kwamandla kuncishisiwe, ngaleyo ndlela kunciphisa kakhulu ukukhuphuka kwezinga lokushisa kwesistimu, kunciphisa ngempumelelo amathuba okulimala kwe-LED, ukuthuthukisa ukuzinza nokuthembeka kwalo lonke uhlelo lokubonisa, nokwelula kakhulu impilo yesistimu.
5. Uyini umkhuba wokuthuthukiswa kobuchwepheshe obuvamile be-cathode?
Imikhiqizo esekelayo ehlobene nobuchwepheshe bokubonisa obuvamile be-cathode LED, njenge-LED, ukunikezwa kwamandla, i-IC yomshayeli, njll., ayivuthwanga njengochungechunge lwemboni ye-anode ye-LED evamile. Ngaphezu kwalokho, uchungechunge oluvamile lwe-cathode IC aluphelele okwamanje, futhi ivolumu iyonke ayinkulu, kuyilapho i-anode evamile isathatha ama-80% emakethe.
Isizathu esiyinhloko sokuhamba kancane kobuchwepheshe obuvamile be-cathode yizindleko eziphezulu zokukhiqiza. Ngokusekelwe ekubambisaneni kochungechunge lokuhlinzeka, i-cathode evamile idinga ukubambisana okwenziwe ngokwezifiso kuzo zonke iziphetho zochungechunge lwemboni njengama-chips, ukupakisha, i-PCB, njll., okumba eqolo.
Kule nkathi yezingcingo eziphezulu zokonga amandla, ukuvela kwezikrini ezivamile ze-cathode ezibonisa ngale LED sekuyiphoyinti lokusekela elilandelwa yile mboni. Kodwa-ke, kusenendlela ende okufanele yenziwe ukuze kuzuzwe ukukhuthazwa okuphelele nokusetshenziswa ngomqondo omkhulu, okudinga imizamo ehlanganyelwe yemboni yonke. Njengomkhuba wokuthuthukisa ukonga amandla, isikrini esivamile se-cathode LED display sibandakanya izindleko zokusebenzisa kanye nokusebenza kukagesi. Ngakho-ke, ukonga amandla kuhlobene nezintshisakalo zama-opharetha esikrini sokubonisa i-LED kanye nokusetshenziswa kwamandla kazwelonke.
Kusukela esimweni samanje, isikrini esivamile se-cathode LED-saving energy ngeke sandise izindleko kakhulu uma siqhathaniswa nesikrini esivamile sokubonisa, futhi sizokonga izindleko ekusetshenzisweni kwakamuva, okuhlonishwa kakhulu yimakethe.
Isikhathi sokuthumela: Feb-02-2024
