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US 2016/0109404 A1Published application
Chemical/physical phenomenon detecting device and method of producing the same
AssigneesSharp Kabushiki Kaisha, National University Corporation Toyohashi University of Technology
InventorsSatoshi SAITOH, Toshio YOSHIDA, Tomohiro KONISHI, Kazuaki SAWADA
Life of this patent
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Abstract
An ion sensor is configured such that part of a P well on which part a sensing section is provided is different, in dopant concentration, from the other part of the P well so that electric charges are injected merely to the sensing section in a state where a voltage is applied to an N-type substrate.
Claims8
An ion concentration sensor comprising:
- a semiconductor substrate;
- a sensing section in which electric charges, used to detect an ion concentration, is accumulated;
- an electric charge transfer section which transfers the electric charges accumulated in the sensing section;
- an electric charge detecting section which detects an amount of the electric charges that have been transferred;
- and
- an ion sensitive film which changes, depending on the ion concentration, the amount of the electric charges to be accumulated in the sensing section,
- the sensing section, the electric charge transfer section, and the electric charge detecting section being provided on a diffusion region, on the semiconductor substrate, whose type is opposite to that of the semiconductor substrate,
- part of the diffusion region on which part the sensing section is provided being different, in dopant concentration, from the other part of the diffusion region so that the electric charges are injected merely to the sensing section in a state where a voltage is applied to the semiconductor substrate.
5 more elements
An ion concentration sensor comprising:
- a sensing section in which electric charges, used to detect an ion concentration of a test body, is accumulated;
- an electric charge transfer section which transfers the electric charges accumulated in the sensing section;
- an electric charge detecting section which detects an amount of the electric charges that have been transferred;
- and
- an ion sensitive film which changes, depending on the ion concentration, the amount of the electric charges to be accumulated in the sensing section,
- the sensing section generating the electric charges by photoelectric conversion.
3 more elements
Dependencies are inferred from the claim text.