I whakaputaina i te 9 o Ākuhata, 2024, i te 15:30 EE Times Japan
Kua mahi tahi tētahi rōpū rangahau nō Te Whare Wānanga o Hokkaido o Hapani ki te whakawhanake i tētahi "transistor kiriata-angiangi waikura" me te nekehanga irahiko o te 78cm2/Vs me te pumau tino pai me Te Whare Wānanga Hangarau o Kochi. Ka taea te whakahaere i ngā mata o ngā pouaka whakaata OLED 8K o te whakatupuranga e whai ake nei.
Ka hipokina te mata o te paparanga angiangi hohe ki te kiriata tiaki, e whakapai ake ana i te pumau.
I te marama o Ākuhata 2024, i kī tētahi rōpū rangahau tae atu ki te Ahorangi Tuarua a Yusaku Kyo rāua ko Ahorangi Hiromichi Ota o te Whare Rangahau mō te Pūtaiao Hiko, Te Whare Wānanga o Hokkaido, i te mahi tahi me Ahorangi Mamoru Furuta o te Kura Pūtaiao me te Hangarau, Te Whare Wānanga o Kochi, kua whakawhanakehia e rātou he "transistor kiriata angiangi waikura" me te nekehanga irahiko o te 78cm2/Vs me te pumau tino pai. Ka taea te whakahaere i ngā mata o ngā pouaka whakaata OLED 8K o te whakatupuranga e whai ake nei.
Ko ngā pouaka whakaata OLED 4K o nāianei e whakamahi ana i ngā transistors kiriata-angiangi oxide-IGZO (a-IGZO TFTs) hei whakahaere i ngā mata. Ko te nekehanga irahiko o tēnei transistor e tata ana ki te 5 ki te 10 cm2/Vs. Heoi, hei whakahaere i te mata o tētahi pouaka whakaata OLED 8K o te whakatupuranga e whai ake nei, me whakamahi he transistor kiriata-angiangi oxide me te nekehanga irahiko o te 70 cm2/Vs, neke atu rānei.
I whakawhanakehia e te Ahorangi Tuarua a Mago me tana tīma he TFT me te nekehanga irahiko o te 140 cm2/Vs 2022, mā te whakamahi i tētahi kiriata angiangi ote waikura iniuma (In2O3)mō te paparanga hohe. Heoi, kāore i whakamahia mō te mahi tūturu nā te mea he tino ngoikore tōna pumau (pono) nā te mimiti me te tangohanga o ngā ngota hau i te rangi.
I tēnei wā, i whakatau te rōpū rangahau ki te hipoki i te mata o te paparanga angiangi hohe ki tētahi kiriata tiaki hei ārai i te mimiti o te hau ki te hau. I whakaatuhia e ngā hua whakamātautau ko ngā TFT me ngā kiriata tiaki owaikura itiriumamewaikura erbiumi whakaatu i te tino pumau. Heoi anō, ko te nekenekehanga o te irahiko he 78 cm2/Vs, ā, kāore ngā āhuatanga i rerekē ahakoa i whakamahia he ngaohiko o te ±20V mō te 1.5 hāora, ā, i noho pumau tonu.
I tētahi atu taha, kāore i pai ake te pumau i roto i ngā TFT i whakamahi i te hafnium oxide, i tewaikura konumohehei kiriata tiaki. I te tirotiro i te whakaritenga ngota mā te whakamahi i te karu hikohiko, i kitea kowaikura iniuma mewaikura itiriuma i piri pūmau i te taumata ngota (te tipu heteroepitaxial). He rerekē, i whakaūtia i roto i ngā TFT kāore i pai ake te pumau, he koretake te hononga i waenga i te indium oxide me te kiriata tiaki.