Semiconductor device and method for manufacturing the same

In a thin film transistor using an oxide semiconductor, one of purposes is to increase electric field effect mobility. Furthermore, one of the purposes is to suppress an increase in off current even though electric field effect mobility of the thin film transistor is increased. In the thin film tran...

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Bibliographic Details
Main Authors AKIMOTO KENGO, SASAKI TOSHINARI
Format Patent
LanguageEnglish
Korean
Published 11.07.2022
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Summary:In a thin film transistor using an oxide semiconductor, one of purposes is to increase electric field effect mobility. Furthermore, one of the purposes is to suppress an increase in off current even though electric field effect mobility of the thin film transistor is increased. In the thin film transistor using an oxide semiconductor layer, by forming a semiconductor layer having higher conductivity and a smaller film thickness than the oxide semiconductor layer between the oxide semiconductor layer and a gate insulating layer, electric field effect mobility of the thin film transistor can be increased to additionally suppress an increase in off current. 산화물 반도체를 사용한 박막 트랜지스터에 있어서, 전계 효과 이동도를 향상시키는 것을 과제의 하나로 한다. 또한, 박막 트랜지스터의 전계 효과 이동도를 향상시키더라도, 오프 전류의 증대를 억제하는 것을 과제의 하나로 한다. 산화물 반도체층을 사용한 박막 트랜지스터에 있어서, 산화물 반도체층과 게이트 절연층의 사이에, 상기 산화물 반도체층보다 도전율이 높고, 막 두께가 얇은 반도체층을 형성함으로써, 상기 박막 트랜지스터의 전계 효과 이동도를 향상시켜, 또한 오프 전류의 증대를 억제할 수 있다.
Bibliography:Application Number: KR20220078852