Patent ID: 7696530
Filing Date: 2010-04-13
Classification: G01N

Abstract:
1. A sensor comprising: a first gate electrode; a second gate electrode; a semiconductor layer; a gate-insulating layer; a source electrode; a drain electrode; and a sensing portion including an accommodating part for receiving a sample solution; and a receiving layer, the receiving layer being arranged on a surface of the sensing portion, wherein the first gate electrode and the second gate electrode are opposed to each other with the sensing portion, the semiconductor layer, and the gate-insulating layer therebetween, wherein a first surface of the semiconductor layer is in contact with the surface of the sensing portion on which the receiving layer is arranged, wherein a second surface of the semiconductor layer is in contact with a first surface of the gate-insulating layer, wherein a second surface of the gate-insulating layer, which is different from the first surface in contact with the semiconductor layer, is in contact with the second gate electrode, wherein the first gate electrode and the receiving layer are opposed to each other with the accommodating part of the sensing portion positioned therebetween, and wherein the source electrode and the drain electrode are in contact with the semiconductor layer.