Patent ID: 11846603

Abstract:
The present invention provides a chemical sensor that can be manufactured at low cost and has high detection sensitivity. The chemical sensor according to the present invention is characterized by comprising: a substrate; a semiconductor thin film having a first contact region and a second contact region; an injection electrode; a first MIS structure; a second MIS structure; a transfer electrode; and a capacitor, wherein the semiconductor thin film has a sensing region provided so that an electric potential thereof changes in direct or indirect response to an object to be measured; the injection electrode is configured to inject an electrical charge into the first contact region; the first MIS structure is configured to control a flow of the electrical charge to the sensing region, the electrical charge being injected into the first contact region by the injection electrode; the second MIS structure is configured to control the flow of the electrical charge from the sensing region to the second contact region; and the transfer electrode is configured to allow the electrical charge in the sensing region to flow to the capacitor through the second contact region.