OLED ili ndi kuwala kwake kwakukulu komwe kumatulutsa kuwala, ngodya yowonera kwambiri, yankho lachangu, kugwiritsa ntchito mphamvu zochepa, ndipo imatha kupangidwa kukhala zida zowonetsera zosinthasintha, imaganiziridwa kuti ilowa m'malo mwa ukadaulo wamadzimadzi wa kristalo woyenera m'badwo wotsatira waukadaulo wowonetsera. Gawo lalikulu la chiwonetsero cha OLED ndi pixel iliyonse yokhala ndi mphamvu yotulutsa kuwala kwa OLED. Kapangidwe koyambira ka chinthu chotulutsa kuwala kwa OLED kamaphatikizapo anode, cathode, ndi sandwiched pakati pa gawo logwira ntchito lotulutsa kuwala, lomwe gawo lotulutsa kuwala Malinga ndi ntchito ya zipangizo za OLED mu chipangizocho ndi kapangidwe ka chipangizocho, limatha kusiyanitsa ngati gawo lopangira dzenje (HIL), gawo loyendetsa dzenje (HTL), gawo lotulutsa kuwala (EML) gawo loyendetsa ma electron (ETL), gawo lopangira ma electron (EIL) ndi zida zina.
Mu ma OLED, gawo lolowetsa mabowo ndi gawo loyendetsa mabowo zimagwiritsidwa ntchito kupititsa patsogolo mphamvu ya majekeseni a mabowo, pomwe gawo lolowetsa ma elekitironi ndi gawo loyendetsa ma elekitironi zimagwiritsidwa ntchito kupititsa patsogolo mphamvu ya ma elekitironi. Zina mwa zinthu zotulutsa kuwala zokha zimakhala ndi ntchito yoyendetsa mabowo kapena kutengera ma elekitironi, nthawi zambiri zimatchedwa kuwala kwakukulu; gawo lotulutsa kuwala mu utoto wochepa wa organic fluorescent kapena phosphorescent limatha kulandira kuchokera ku thupi lalikulu lowunikira la kusamutsa mphamvu, ndipo ponyamula ndi kutulutsa mtundu wina wa kuwala, zinthu zotulutsa kuwala nthawi zambiri zimatchedwanso thupi lotulutsa kuwala la alendo kapena lotulutsa kuwala.
2. Mfundo Zoyambira za Kutulutsa Kuwala kwa Chipangizo cha OLED
Mphamvu yamagetsi imagwiritsidwa ntchito pa chipangizo cha OLED, ndipo mabowo ndi ma elekitironi amalowetsedwa mu OLED kuchokera ku anode ndi cathode ya chipangizocho, motsatana. Mabowo ndi ma elekitironi omwe ali muzinthu zotulutsa kuwala za organic amapanga mphamvu yotulutsa kuwala, ndipo mphamvu yowonjezereka imasamutsa mamolekyulu azinthu zotulutsa kuwala za organic, kotero kuti zimasangalatsidwa ndi mkhalidwe wosangalala, kenako exciton kuchokera ku mkhalidwe wosangalala kubwerera ku mkhalidwe wa nthaka, mphamvuyo mu mawonekedwe a kumasulidwa, ndipo pamapeto pake zimazindikira kuwala kwa chipangizo cha OLED.
Kawirikawiri, filimuyi mu OLED imaphatikizapo filimu ya electrode yoyendetsa magetsi ndi gawo lililonse la zinthu zotulutsa kuwala kwachilengedwe. Pakadali pano, ma anode a zida za OLED zomwe zapanga zinthu zambiri nthawi zambiri amakonzedwa pogwiritsa ntchito ukadaulo wowongolera maginito. Ma cathode ndi zigawo zowunikira zachilengedwe nthawi zambiri amakonzedwa ndi vacuum evaporation.
——Nkhaniyi yatulutsidwa ndimakina ophikira osakanizaGuangdong Zhenhua
Nthawi yotumizira: Sep-22-2023