Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shunpei Yamazaki0
Kunihiko Suzuki0
Takahiro Tsuji0
Date of Patent
October 8, 2024
0Patent Application Number
178634370
Date Filed
July 13, 2022
0Patent Citations
...
Patent Primary Examiner
Patent abstract
An object is to provide a high reliability thin film transistor using an oxide semiconductor layer which has stable electric characteristics. In the thin film transistor in which an oxide semiconductor layer is used, the amount of change in threshold voltage of the thin film transistor before and after a BT test is made to be 2 V or less, preferably 1.5 V or less, more preferably 1 V or less, whereby the semiconductor device which has high reliability and stable electric characteristics can be manufactured. In particular, in a display device which is one embodiment of the semiconductor device, a malfunction such as display unevenness due to change in threshold voltage can be reduced.
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