Posachedwapa, gulu lofufuza la BOE linasindikiza pepala lotchedwa Novel Package Design Enhances Optical Efficiency of Micro LED Displays mu magazini ya Information Display.

Njira Yopangira Ma Micro LED Display Microstructure Packaging (Chithunzi: Chidziwitso Chowonetsera)

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Kafukufukuyu akupereka njira yatsopano yopangira ma CD a Micro LED, yomwe ingathandize kuthetsa mavuto aukadaulo monga kutulutsa mphamvu kwa ma tchipisi a micro LED m'mbali mwa msewu, kugwiritsa ntchito mphamvu zochepa, komanso kusintha kwa mitundu.

Zanenedwa kuti pamene kukula kwa ma pixel kukuchepa kufika pansi pa 50μm, dera lofanana la chipu cha mbali ya chip limawonjezeka, zomwe zimapangitsa kuti ma side emission achuluke komanso kuti ma Micro LED achepe kwambiri. Izi zimapangitsa kuti kuwala kuchepe komanso kusintha mtundu, zomwe zimalepheretsa kugwiritsa ntchito ma Micro LED m'malo owonetsera bwino kwambiri.

Pofuna kuthana ndi vutoli, gulu lofufuza la BOE linapanga kapangidwe kake kophatikizana komwe kali ndi guluu wowonekera bwino wokhala ndi chomatira chowonekera bwino, utomoni woyera wowonekera bwino, ma microlens arrays, ndi matrix wakuda wopangidwa (BM).

Mwa kuyambitsa gawo la gradient refractive index pa ma Micro LED chips, ofufuza adawongolera bwino ngodya yotulukira ya kuwala kuchokera pamwamba pa chip, ndikuwonjezera ngodya yofunikira kuchokera madigiri 25 mpaka madigiri 65.9 komanso kukulitsa kwambiri mphamvu yotulutsa kuwala kwapamwamba.

Pakadali pano, utomoni woyera wowala umapanga kapangidwe ka isosceles trapezoidal pakati pa ma chips, omwe amatha kukhazikika ndikufalitsa kuwala, ndikuwonjezera kuwala pa ngodya yowonera ya 0° ndi pafupifupi 27%. Kuphatikiza apo, njira ya plasma yochotsera guluu wotsalira imatsimikizira kutulutsa kwa kuwala kosatsekedwa.

Ponena za kulamulira kuwala, gululi linagwiritsa ntchito ukadaulo wa nanoimprint lithography kuti lipange ma microlens olondola kwambiri, zomwe zinapangitsa kuti kuwala kugwirizane bwino mkati mwa ±60°.

Zotsatira za kuyerekezera zikusonyeza kuti pamene kupotoka kwa lens kuli 0.03 ndipo chizindikiro cha refractive chili 1.85, mphamvu ya kuwala imawonjezeka ndi kupitirira 53%. Kuphatikiza apo, kafukufukuyu adayambitsa matrix wakuda wokhala ndi mapatani mu galasi lopakira, zomwe zidachepetsa bwino kuwunikira kukhala kochepera 2% ndikukwaniritsa chiŵerengero chapamwamba chosiyana choposa 20,000:1, zomwe zidapangitsa kuti chiwonetserocho chikhale bwino kwambiri.

(a) Kapangidwe ka LED kakang'ono, (b) Kuwongolera kuwala mkati mwa chip, (c) Kugawa kuwala (Chithunzi: Kuwonetsa Zambiri)

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Gulu lofufuza la BOE linanena kuti njira imeneyi sikuti imangopangitsa kuti kuwala kugwire bwino ntchito komanso kufanana, komanso imaganizira kudalirika kwa ma CD. Kuphatikiza kwa chivundikiro chagalasi ndi OCA (Optically Clear Adhesive) kumawonjezera mphamvu zosalowa madzi, zotsutsana ndi okosijeni, komanso zosawonongeka, zomwe zimapangitsa kuti ma Micro LED agwiritsidwe ntchito kwambiri m'magawo monga zowonetsera zamagalimoto, mahedifoni a AR/VR, ndi zida zovalidwa.

BOE sikuti yangopeza zotsatira zaposachedwa za kafukufuku wa Micro LED komanso ikupitilizabe kulimbikitsa chitukuko cha ukadaulo wa Mini/Micro LED direct display ndi mapulogalamu.