Capacitance sensor and method for producing capacitance sensor
AssigneeFujikura Ltd.
InventorTakashi Kameshima
Life of this patent
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Abstract
A capacitance sensor includes a translucent base film, a translucent resist layer disposed on a part of a main surface of the translucent base film and having higher adhesion to a conductive polymer than to the translucent base film, and a translucent electrode including a conductive material containing the conductive polymer and disposed on a surface of the translucent resist layer opposite to a surface of the translucent resist layer on which the translucent base film is disposed. When viewed along a thickness direction of the translucent base film, a region of the main surface of the translucent base film where the translucent resist layer is not disposed surrounds the translucent electrode.
Claims9
A capacitance sensor comprising:
- a translucent base film;
- a translucent resist layer disposed on a part of a main surface of the translucent base film and having higher adhesion to a conductive polymer than to the translucent base film;
- and
- a translucent electrode including a conductive material containing the conductive polymer and disposed on a placement surface of the translucent resist layer opposite to a surface of the translucent resist layer on which the translucent base film is disposed, wherein
- when viewed along a thickness direction of the translucent base film, a region of the main surface of the translucent base film where the translucent resist layer is not disposed surrounds the translucent electrode,
- an entirety of the translucent electrode is disposed on the placement surface, and
- in a plan view of the capacitance sensor, an outer peripheral edge of the translucent electrode is disposed closer to a center of the translucent electrode than is an outer peripheral edge of the translucent resist layer.
A method for producing a capacitance sensor, comprising:
- applying a resin material to a part of a main surface of a translucent base film to form a translucent resist layer having higher adhesion to a conductive polymer than to the translucent base film;
- and
- forming a translucent electrode by applying a conductive material containing the conductive polymer to a placement surface of the translucent resist layer opposite to a surface of the translucent resist layer on which the translucent base film is disposed, wherein
- in forming the translucent resist layer, the resin material is applied such that, when viewed along a thickness direction of the translucent base film, a region of the main surface of the translucent base film where the translucent resist layer is not disposed surrounds the translucent resist layer,
- in forming the translucent electrode, the conductive material is applied such that, when viewed along the thickness direction, the region surrounds the translucent electrode,
- in forming the translucent electrode, the conductive material is applied such that an entirety of the translucent electrode is disposed on the placement surface, and
- in a plan view of the capacitance sensor, an outer peripheral edge of the translucent electrode is disposed closer to a center of the translucent electrode than is an outer peripheral edge of the translucent resist layer.
Dependencies are inferred from the claim text.