Physical quantity sensor, physical quantity sensor apparatus, electronic device, and mobile body
First Claim
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1. A physical quantity sensor comprising:
- a first structure which has a movable section that includes movable electrode fingers;
a second structure which includes first fixed electrode fingers that are arranged to oppose the movable electrode fingers;
a third structure which includes second fixed electrode fingers that are arranged to oppose the movable electrode fingers;
an electrostatic capacity forming section that forms a first electrostatic capacity between the first structure and the second structure; and
a first electrostatic capacity adjusting section that is configured to adjust the first electrostatic capacity,wherein the first structure has a first support section which supports the movable section,the first support section has a first extending section which extends from the first support section, the first extending section has a first leading end side surface, and the first leading end side surface is located directly adjacent to a first finder side surface of one of the first fixed electrode fingers, andthe first electrostatic capacity adjusting section is configured by the first leading end side surface and the finger side surface of the one of the first fixed electrode fingers.
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Abstract
A physical quantity sensor has a first structure which has a movable section that includes movable electrode fingers, a second structure which includes first fixed electrode fingers that are arranged to oppose the movable electrode fingers, a third structure which includes second fixed electrode fingers that are arranged to oppose the movable electrode fingers, and a first electrostatic capacity forming section that forms an electrostatic capacity between the first structure and the second structure.
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Citations
16 Claims
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1. A physical quantity sensor comprising:
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a first structure which has a movable section that includes movable electrode fingers; a second structure which includes first fixed electrode fingers that are arranged to oppose the movable electrode fingers; a third structure which includes second fixed electrode fingers that are arranged to oppose the movable electrode fingers; an electrostatic capacity forming section that forms a first electrostatic capacity between the first structure and the second structure; and a first electrostatic capacity adjusting section that is configured to adjust the first electrostatic capacity, wherein the first structure has a first support section which supports the movable section, the first support section has a first extending section which extends from the first support section, the first extending section has a first leading end side surface, and the first leading end side surface is located directly adjacent to a first finder side surface of one of the first fixed electrode fingers, and the first electrostatic capacity adjusting section is configured by the first leading end side surface and the finger side surface of the one of the first fixed electrode fingers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A physical quantity sensor comprising:
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a first structure which has a movable section that includes movable electrode fingers; a second structure which includes first fixed electrode fingers that are arranged to oppose the movable electrode fingers; a third structure which includes second fixed electrode fingers that are arranged to oppose the movable electrode fingers; an electrostatic capacity forming section that forms a first electrostatic capacity between the first structure and the second structure; and an electrostatic capacity adjusting section that is configured to adjust the first electrostatic capacity, wherein the first structure has a support section which supports the movable section, the support section has an extending section which extends from the support section in a first direction, wherein the second structure has a connecting section which connects the first fixed electrode fingers, a first part of the connecting section extends in the first direction, the first part of the connecting section is located directly adjacent to the extending section of the support section of the first structure so that a side surface of the first part of the connecting section directly faces a side surface of the extending section, and the first part is located opposite to the movable electrode fingers with respect to the support section, and the electrostatic capacity adjusting section is configured by the side surface of the extending section and the side surface of the first part of the connecting section. - View Dependent Claims (10, 11, 12)
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13. A physical quantity sensor comprising:
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a first structure which has a movable section that includes movable electrode fingers; a second structure which includes first fixed electrode fingers that are arranged to oppose the movable electrode fingers; a third structure which includes second fixed electrode fingers that are arranged to oppose the movable electrode fingers; and an electrostatic capacity forming section that forms a first electrostatic capacity between the first structure and the second structure, wherein the first structure has a support section which supports the movable section, a wiring outwardly extend from the support section in a first direction, and the wiring is electrically connected to the movable section via the support section, wherein the second structure has a connecting section which connects the first fixed electrode fingers, a first part of the connecting section extends in a second direction perpendicular to the first direction, the first part is located directly adjacent to the support section of the first structure, the first part is located opposite to the movable electrode fingers with respect to the support section, and the electrostatic capacity forming section is configured by an overlapped section between the wiring and the first part of the connecting section. - View Dependent Claims (14, 15, 16)
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Specification