Esikhathini esidlule, lapho sinaka i-Micro LED, asikwazanga ukugwema isihloko esinzima "sokudlulisa ngobuningi".Namuhla, kungcono ukuphuma emaketangeni ama-chips futhi nixoxe ngalolu daba endleleni ye-LED miniaturization.Ake sibheke izinguquko zokuzijwayeza kusukaI-LED encaneku-Micro LED, ifomu lokupakisha, impahla ye-luminescent kanye ne-IC yomshayeli.Yiziphi ezizohamba phambili?Yiziphi ezizonyamalala emehlweni ethu?
Kusukela ku-pitch encane kuya ku-Micro LED, yiziphi izinguquko ezizokwenzeka ngendlela yemikhiqizo ehlanganisiwe?
Ngokombono wokupakisha, izibonisi ze-LED zingahlukaniswa zibe izinkathi ezintathu: iphimbo elincane, i-Mini ne-Micro.Izinkathi zokupakisha ezihlukene zinezinhlobo ezahlukene zomkhiqizoisibonisi se-LED esiguquguqukayoamadivaysi.1. I-Single-pixel 3-in-1 yokuhlukanisa idivayisi ye-SMD: I-1010 ingummeleli ojwayelekile;2. Idivayisi yokuhlukanisa iphakheji yohlobo lwe-Array AIP: Okune kokukodwa ummeleli ojwayelekile;3. I-Surface gluing GOB: I-SMD yokushisa okujwayelekile kwe-gluing yamanzi ingummeleli ojwayelekile;4. I-COB yokupakisha ehlanganisiwe: iglue ewuketshezi lokushisa evamile ingummeleli ojwayelekile.
Esikhathini se-Mini LED, kunezinhlobo ezimbili eziyinhloko zamafomu omkhiqizo: amadivaysi ahlukene e-in-one kanye namaphakheji ahlanganisiwe.Ummeleli ojwayelekile we-SMT uyidivayisi eyodwa futhi ehlukene.Ummeleli ojwayelekile we-physical module splicing ukupakishwa okuhlanganisiwe.Ubuchwepheshe bokupakisha obuhlanganisiwe busenezinkinga ezifana nombala we-inki nokuvumelana kombala, isivuno, kanye nezindleko.Idivayisi yokuhlukanisa engu-0505 ingumkhawulo we-SMD.Njengamanje, ibhekene kakhulu nokuthembeka, ukusebenza kahle kwe-SMT, ukugxila nezinye izinkinga.Esikhathini se-Mini LED, kungenzeka ukuthi ilahlekelwe umkhakha wobuchwepheshe.Esikhathini se-Micro LED, akungabazeki ukuthi izohlanganiswa nokupakishwa.Kodwa inkinga igxile ekudlulisweni kwe-chip.
Ngokuqondene nokubikezela amathrendi ezobuchwepheshe esikhathi esizayo wezibonisi ze-LED, kunamaphuzu amane abalulekile:1. Ubuchwepheshe bokupakisha buguqukile busuka ekufakweni kobuchwepheshe bephoyinti kuya emaphaketheni obuchwepheshe obungaphezulu, obubhekene ne-LED miniaturization.Lokhu kuzoba indlela yokunciphisa izinyathelo zokukhiqiza kanye nokunciphisa izindleko zesistimu.2. Ukusuka kokukodwa kokukodwa, Okune kokukodwa kuya ku-N kokukodwa.Ifomu lokupakisha lenziwa lula.3. Ngokombono wosayizi we-chip nokuphakama kwamachashazi, akukho ukungabaza ukusuka ku-Mini LED kuya ku-LED encane.4. Ngokombono wemakethe yetheminali, isibonisi se-LED sesikhathi esizayo sizosuka emakethe yobunjiniyela neyokuqasha siye emakethe yokubonisa ezohwebo.Ushintsho olusuka kusibonisi "isikrini" luye kusibonisi "idivayisi".
Esikhathini se-Mini LED ne-Micro LED, kuthiwani ngama-phosphors?
Izibonisi ze-Mini LED/Micro LED full-chip ngokuvamile zithandwa yi-imboni yokubonisa eholayo, kodwa izinkinga zokudlulisa okukhulu ohlelweni lokukhiqiza, ukulawulwa kwe-chip enemibala eminingi kanye nokuncishiswa okuhlukile nakho kuvelele kakhulu.Ngaphambi kokuba izinkinga ezingenhla zixazululwe ngokuphelele, ukuthuthukisa ama-phosphors amasha ajatshuliswa yi-Mini LED / Micro LED eluhlaza okwesibhakabhaka ukuze agweme ukunganele kobuchwepheshe obukhona futhi anikeze ukudlala okugcwele ezinzuzweni zayo zobuchwepheshe futhi kuyindlela yobuchwepheshe ecatshangelwa yimboni.Kodwa-ke, kuyadingeka ukuxazulula inkinga yobukhulu bezinhlayiyana ze-phosphor kanye nokulahlekelwa ukusebenza kahle okubangelwa usayizi wezinhlayiyana ezincane.
Njengamanje, i-Mini LED isafaneleka embonini ye-LCD njengomthombo we-backlight, kodwa okwamanje ayinayo inzuzo yezindleko.Namuhla, izinga lokusungulwa kwezimboni le-liquid crystal display color gamut esekelwe emithonjeni emisha yokukhanyisa i-LED lidlule u-90% we-NTSC.Umhlaba ocwaningiwe ongavamile uzuze ukukhiqizwa ngobuningi kanye nokusetshenziswa okubanzi kwe-narrow-band fluoride.Ekuqhubekeni nokunqoba ukukhishwa okusha kwebhendi elincane lamaphosphor abomvu nokuluhlaza namalambu angemuva e-LED.Lokhu kusiza ukuqhubekisela phambili ukukhulisa i-gamut yombala yesibonisi sekristalu ewuketshezi sibe ngu-110% NTSC, eqathaniswa nobuchwepheshe be-OLED/QLED.
Ngaphezu kwalokho, mhlawumbe izinto ezikhipha ukukhanya kwamachashazi e-quantum nazo zingadlala indima.Kodwa izinto zokwakha ze-quantum dot luminescent "zibukeka zizinhle" futhi zinikezwe amathemba aphezulu.Kodwa-ke, izinkinga zokuzinza, ukusebenza kahle okukhanyayo, ukuvikelwa kwemvelo kanye nezindleko eziphezulu zokufaka isicelo azikaxazululwa kahle.Ngaphezu kwalokho, amachashazi e-photoluminescent quantum ayashintshashintsha.Ukusetshenziswa kwangempela kwamachashazi e-quantum kuku-QLED.Njengamanje, eminye imihlaba eyivelakancane iye yabeka ukuthuthukiswa kwezinto ezikhanyayo ze-QLED.
Kungani indlela yokushayela yesibonisi se-LED yasekuqaleni ingasebenzi uma kuziwa esikhathini se-Mini ne-Micro LED?
Uma izibonisi ze-LED zifaka i-Micro LED ne-Mini LED, izindlela zokushayela zesibonisi ze-LED azikwazi ukusetshenziswa.Isizathu esiyinhloko indawo etholakalayo.Ngokuvamile, isikoIsibonisi se-LEDumshayeli IC angashayela kufika kumaphikseli angu-600, futhi ngenxa yokuthi izibonisi ze-LED zivame ukusetshenziswa endaweni engaphezu kwamayintshi angu-120, usayizi we-IC ngeke ubangele izinkinga.Kodwa-ke, uma amaphikseli afanayo elingana nosayizi wencwajana noma umakhalekhukhwini, ama-IC anosayizi ofanayo nenombolo ngeke alingane kudivayisi yebhukwana noma umakhalekhukhwini, ngakho I-Micro LED ne-Mini LED zidinga izindlela zokushayela ezihlukene.
Ngokuvamile, izindlela zokushayela zokubonisa zingahlukaniswa zibe izinhlobo ezimbili.Uhlobo lokuqala yiPassive Matrix.Ngokuvamile ukungenzi lutho kusho ukuthi kuphela uma amaphikseli askeniwe engaphansi kwamandla amanje noma amandla lapho kuzoba khona ukuphuma kokukhanya.Esinye isikhathi esingaskenwenga asisebenzi.Njengoba le ndlela isebenza kuphela kukholomu eyodwa ngesikhathi sokuguqulwa kohlaka ngalunye, kunzima kakhulu ukufeza izidingo zokulungiswa okuphezulu nokukhanya okuphezulu kuphaneli eyodwa.Futhi inqobo nje uma kukhona isifunda esifushane kwelinye lamaphikseli, kulula ukubangela isignali crosstalk.
Ngaphezu kwalokho, kukhona nemiklamo esebenzisa i-transistor eyengeziwe njengeswishi ukuze kugwenywe ukuphazamiseka kwesignali okubangelwa izinkinga zengxenye.Noma iyiphi indlela, isenzo sisasebenza.Njengamanje, le ndlela yokushayela isetshenziswa kakhulu ezinhlelweni ezinokulungiswa okuphansi ngenxa yokwakheka kwayo kwesekethe elula kanye nezindleko eziphansi.Njengokugqoka amasongo ezemidlalo.Uma kunesidingo sephaneli yokucaca okuphezulu, amamojula amaningi anokulungiswa okuphansi angasetshenziselwa ukuhlanganiswa, njengesikrini esikhulu sokubonisa.
Olunye uhlobo lwemodi yokushayela i-Active Matrix.Njengoba igama liphakamisa, i-Active Matrix ingaqhubeka nokugcina i-voltage yamanje noma isimo samanje ngokusebenzisa idivayisi yokugcina yephikseli ngokwayo ngaphakathi kohlaka lohlaka.Ngenxa yokuthi i-capacitor isetshenziselwa ukugcinwa, kukhona nezinkinga zokuvuza kanye nesignali ye-crosstalk, kodwa incane kakhulu kunokushayela okwenziwayo.Indlela yokushayela ye-analogi imvamisa isenenkinga yokufana ebangelwa inqubo yefilimu ezacile ye-transistor kanye nedivayisi ekhipha ukukhanya ngokwayo ekulungisweni okuphezulu.Ngakho-ke, kunezakhiwo zomthombo wamanje eziyinkimbinkimbi njenge-7T1C noma i-5T2C ukuxazulula inkinga yokufana.
Uma usayizi wamaphikseli mncane ngokwezinga elithile futhi izidingo zokuxazulula ziphezulu kakhulu, indlela yokushayela yedijithali izosetshenziswa ngangokunokwenzeka ukuze kuhlangatshezwane nenkinga yokufana okukhulunywe ngenhla.Ngokuvamile, i-pulse width modulation (PWM) isetshenziselwa ukulungiswa kwesikali esimpunga.ukukhiqiza imibala ehlukahlukene empunga.
Indlela ye-PWM isebenzisa ikakhulukazi amasegimenti okushaya kwenhliziyo asakazwa ngezikhathi ezithile ukuze enze izinguquko ze-grayscale ezihlukene ngokushintsha ubude besikhathi sokuvula nokuvala.Le nqubo ingaphinde ibizwe ngokuthi i-duty cycle modulation.Njengoba ama-LED ngokuyinhloko eyizingxenye ezishayelwa manje, ekwakhiweni kwezibonisi ezincane ze-Micro-LED, indlela yokuklama yomthombo wamanje ongashintshi ozimele ivame ukusetshenziselwa ukushayela iphikseli ngalinye elizimele ukuze kuhlangatshezwane nezidingo zokukhanya okufanayo nobude begagasi obuzinzile., Ngaphezu kwalokho, uma kusetshenziswa ukudluliswa kombala ohlukile ohlukile ubuchwepheshe be-Micro-LED busetshenziswa, kuyadingeka ukucabangela i-voltage yokusebenza ye-RGB ehlukile, ngakho-ke kufanele futhi uklame isifunda sokulawula ukunikezwa kwamandla kagesi ozimele ngaphakathi kwephikseli.
Isikhathi sokuthumela: Oct-10-2022