Pressure sensor, acoustic microphone, blood pressure sensor, and touch panel

A pressure sensor, comprising:

• a film part supported by a support unit, the film part being flexible, a first length of the film part in a first direction in a film surface of the film part being longer than a second length of the film part in a second direction perpendicular to the first direction in the film surface;
• and
• a sensing unit,
• a configuration of the film surface having:
• a first side extending in the first direction;
• a second side extending in the first direction to be separated from the first side, a distance between the first side and the second side being the second length;
• a third side extending in the second direction;
• and
• a fourth side extending in the second direction to be separated from the third side, a distance between the third side and the fourth side being the first length,
• the film surface having a central portion, and a peripheral portion provided around the central portion, the peripheral portion having a first element disposition region provided along the first side,
• the sensing unit including a plurality of sensing elements provided on the first element disposition region of the film surface, each of the plurality of sensing elements including a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the film part, and a spacer layer provided between the first magnetic layer and the second magnetic layer,
• positions of at least two of the plurality of sensing elements along the first direction being different from each other.

A pressure sensor, comprising:

• a film part supported by a support unit, the film part being flexible, a first length of the film part in a first direction in a film surface of the film part being longer than a second length of the film part in a second direction perpendicular to the first direction in the film surface;
• and
• a sensing unit,
• a configuration of the film surface being a flattened circle having the first direction as a major axis and the second direction as a minor axis,
• the film surface having a central portion, and a peripheral portion provided around the central portion,
• the peripheral portion having a first element disposition region provided along an arc along the major axis,
• the sensing unit including a plurality of sensing elements provided on the first element disposition region of the film surface, each of the plurality of sensing elements including a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the film part, and a spacer layer provided between the first magnetic layer and the second magnetic layer,
• positions of at least two of the plurality of sensing elements along the first direction being different from each other.

A pressure sensor, comprising:

• a film part supported by a support unit, the film part being flexible;
• and
• a sensing unit,
• a first length of a film surface of the film part in a first direction in the film surface being longer than a second length of the film surface in a second direction perpendicular to the first direction in the film surface,
• the film surface having a central portion, and a peripheral portion provided around the central portion,
• the sensing unit including a sensing element provided on the central portion, the sensing element including a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the film part, and a spacer layer provided between the first magnetic layer and the second magnetic layer.