The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2016
Filed:
Sep. 09, 2013
Sharp Kabushiki Kaisha, Osaka, JP;
SHARP KABUSHIKI KAISHA, Osaka, JP;
Abstract
A semiconductor device is provided with an oxide semiconductor thin-film transistor (TFT); a calibration electrode that is positioned so as to face an oxide semiconductor layer with an insulating layer therebetween, and, when viewed from the direction of the substrate normal line, overlaps at least part of a gate electrode with the oxide semiconductor layer interposed therebetween; and a calibration voltage setting circuit that determines the voltage to be applied to the calibration electrode. The calibration voltage setting circuit is provided with: a monitor TFT that is configured using a second oxide semiconductor layer, which is substantially the same as the oxide semiconductor layer of the oxide semiconductor TFT; a detection circuit that is configured so as to be able to measure the device characteristics of the monitor TFT; and a voltage determination circuit that determines the voltage to be applied to the calibration electrode on the basis of the measured device characteristics.