Luam tawm rau lub Yim Hli 9, 2024, thaum 15:30 EE Times Nyiv
Ib pawg kws tshawb fawb los ntawm Nyiv Pooj Hokkaido University tau koom tes tsim "oxide thin-film transistor" nrog lub zog hluav taws xob ntawm 78cm2 / Vs thiab kev ruaj khov zoo heev nrog Kochi University of Technology. Nws yuav ua tau los tsav cov ntxaij vab tshaus ntawm tiam tom ntej 8K OLED TVs.
Qhov saum npoo ntawm cov txheej txheem nyias nyias yog them nrog ib zaj duab xis tiv thaiv, zoo heev txhim kho kev ruaj khov
Thaum Lub Yim Hli 2024, ib pawg kws tshawb fawb suav nrog Tus Pabcuam Xibfwb Yusaku Kyo thiab Xibfwb Hiromichi Ota ntawm Lub Tsev Kawm Ntawv Tshawb Fawb Txog Kev Tshawb Fawb Hluav Taws Xob, Hokkaido University, koom tes nrog Xibfwb Mamoru Furuta ntawm Tsev Kawm Ntawv Kev Tshawb Fawb thiab Kev Siv Tshuab, Kochi University of Technology, tshaj tawm tias lawv tau tsim "oxide thin-film transistor" nrog lub zog hluav taws xob ntawm 78cm2 / Vs thiab kev ruaj khov zoo heev. Nws yuav ua tau los tsav cov ntxaij vab tshaus ntawm tiam tom ntej 8K OLED TVs.
Cov TV 4K OLED tam sim no siv cov transistors oxide-IGZO thin-film transistors (a-IGZO TFTs) los tsav cov ntxaij vab tshaus. Lub zog hluav taws xob ntawm cov transistor no yog li 5 txog 10 cm2/Vs. Txawm li cas los xij, txhawm rau tsav lub vijtsam ntawm 8K OLED TV tiam tom ntej, yuav tsum muaj cov transistor oxide thin-film nrog lub zog hluav taws xob ntawm 70 cm2/Vs lossis ntau dua.
Tus Pab Xib Fwb Mago thiab nws pab neeg tau tsim TFT nrog lub zog hluav taws xob ntawm 140 cm2 / Vs 2022, siv ib zaj duab xis nyias ntawmindium oxide (In2O3)rau txheej uas nquag ua haujlwm. Txawm li cas los xij, nws tsis tau muab siv rau hauv kev xyaum vim nws qhov kev ruaj khov (kev ntseeg tau) tsis zoo heev vim yog qhov adsorption thiab desorption ntawm cov pa roj hauv huab cua.
Lub sijhawm no, pawg neeg tshawb fawb tau txiav txim siab los npog qhov chaw ntawm cov txheej nyias nyias nrog ib daim zaj duab xis tiv thaiv kom tiv thaiv cov roj kom tsis txhob raug nqus rau hauv huab cua. Cov txiaj ntsig ntawm kev sim tau qhia tias TFTs nrog cov zaj duab xis tiv thaiv ntawmyttrium oxidethiaberbium oxidetau pom tias muaj kev ruaj khov heev. Ntxiv mus, qhov kev txav mus los ntawm cov hluav taws xob yog 78 cm2 / Vs, thiab cov yam ntxwv tsis hloov pauv txawm tias thaum lub zog hluav taws xob ntawm ± 20V tau siv rau 1.5 teev, tseem ruaj khov.
Ntawm qhov tod tes, kev ruaj khov tsis tau zoo dua hauv TFTs uas siv hafnium oxide lossistxhuas oxideua cov yeeb yaj kiab tiv thaiv. Thaum pom cov atomic arrangement siv lub tshuab hluav taws xob microscope, nws pom tiasindium oxide thiabyttrium oxide tau sib txuas ua ke ntawm qib atomic (heteroepitaxial kev loj hlob). Hauv kev sib piv, nws tau lees paub tias hauv TFTs uas nws qhov kev ruaj khov tsis zoo dua, qhov sib txuas ntawm indium oxide thiab zaj duab xis tiv thaiv yog amorphous.