Patent ID: 11971461
Assignee: TDK CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A sensor configured to detect a predetermined physical quantity, comprising:
a substrate including a top surface;
a support member disposed on the substrate; and
a sensor element configured to change in a physical property depending on the predetermined physical quantity, wherein
the support member includes a protruding surface protruding in a direction away from the top surface of the substrate and inclined at least partially with respect to the top surface of the substrate,
the sensor element includes a functional layer constituting at least a part of the sensor element,
the functional layer is disposed on the protruding surface,
the protruding surface includes an upper end portion farthest from the top surface of the substrate, and also includes a curved surface portion including the upper end portion of the protruding surface and protruding in the direction away from the top surface of the substrate,
the curved surface portion includes a first portion including the upper end portion of the protruding surface, and a second portion continuous with the first portion at a position away from the upper end portion of the protruding surface, and
the protruding surface is shaped such that when a shape of the protruding surface in a cross section perpendicular to the top surface of the substrate is regarded as a function Z having as a variable a position on a virtual straight line that is parallel to each of the cross section and the top surface of the substrate, a mean value of an absolute value of a second derivative Z″ of the function Z corresponding to the first portion is smaller than a mean value of an absolute value of the second derivative Z″ of the function Z corresponding to the second portion.