An buga a ranar 9 ga Agusta, 2024, a 15:30 EE Times Japan
Ƙungiyar bincike daga Jami'ar Hokkaido ta Japan ta haɗu tare da haɓaka "transistor thin-film transistor" tare da motsi na lantarki na 78cm2 / Vs da kyakkyawan kwanciyar hankali tare da Jami'ar Fasaha ta Kochi. Zai yiwu a fitar da allo na 8K OLED TVs na gaba.
Fim ɗin fim ɗin mai aiki mai aiki yana rufe shi da fim mai kariya, yana inganta kwanciyar hankali sosai
A watan Agustan 2024, wata kungiyar bincike da suka hada da Mataimakin Farfesa Yusaku Kyo da Farfesa Hiromichi Ota na Cibiyar Bincike kan Kimiyyar Lantarki ta Jami'ar Hokkaido, tare da hadin gwiwar Farfesa Mamoru Furuta na Makarantar Kimiyya da Fasaha ta Jami'ar Kochi, ta sanar da cewa sun samu ya ɓullo da “transistor thin-film transistor” tare da motsin lantarki na 78cm2/Vs da kyakkyawan kwanciyar hankali. Zai yiwu a fitar da allo na 8K OLED TVs na gaba.
Talabijan OLED na 4K na yanzu suna amfani da oxide-IGZO thin-film transistors (a-IGZO TFTs) don fitar da fuska. Motsin lantarki na wannan transistor yana da kusan 5 zuwa 10 cm2/Vs. Koyaya, don fitar da allo na 8K OLED TV na gaba, ana buƙatar transistor bakin ciki-fim na oxide tare da motsi na lantarki na 70 cm2/Vs ko fiye.
Mataimakin Farfesa Mago da tawagarsa sun ƙera TFT tare da motsi na lantarki na 140 cm2/Vs 2022, ta amfani da fim na bakin ciki.Indium oxide (In2O3)ga Layer mai aiki. Duk da haka, ba a yi amfani da shi a aikace ba saboda kwanciyar hankali (abin dogaro) ya yi rauni sosai saboda adsorption da lalata ƙwayoyin iskar gas a cikin iska.
A wannan karon, ƙungiyar bincike ta yanke shawarar rufe saman ɓangarorin aiki na bakin ciki tare da fim mai kariya don hana iskar gas a cikin iska. Sakamakon gwaji ya nuna cewa TFTs tare da fina-finai masu kariya nayttrium oxidekumaerbium oxideya nuna matuƙar kwanciyar hankali. Bugu da ƙari, motsi na lantarki ya kasance 78 cm2 / Vs, kuma halayen ba su canza ba ko da lokacin da aka yi amfani da wutar lantarki na ± 20V don 1.5 hours, sauran barga.
A gefe guda, kwanciyar hankali bai inganta ba a cikin TFTs waɗanda suka yi amfani da hafnium oxide koaluminum oxidea matsayin fina-finai masu kariya. Lokacin da aka lura da tsarin atomic ta amfani da microscope na lantarki, an gano cewaindium oxide kumayttrium oxide An haɗa su sosai a matakin atomic (girman heterepitaxial). Ya bambanta, an tabbatar da cewa a cikin TFTs wanda kwanciyar hankali bai inganta ba, haɗin tsakanin indium oxide da fim mai kariya ya kasance amorphous.