Resonator assembly comprising a silicon resonator and a quartz resonator
First Claim
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1. A resonator assembly comprising:
- a semiconductor substrate;
a resonator gyroscope, the resonator gyroscope including a first resonator formed in a layer of a first material; and
an oscillator on the semiconductor substrate, the oscillator including a second resonator formed of a second material;
the second resonator being attached in a cavity;
the cavity comprising a first recess in said layer of a first material and the edges of the first recess being attached to the substrate, or the cavity comprising a second recess in said substrate and the edges of the second recess being attached to said layer of a first material;
said first resonator being formed by etching said layer of a first material after said attaching the edges of the first recess to the substrate or said attaching the edges of the second recess to said layer of a first material; and
said cavity being located below a portion of said layer of a first material that is not etched when forming said first resonator.
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Abstract
A resonator assembly comprising a semiconductor substrate, a resonator gyroscope, the resonator gyroscope including a first resonator formed in a layer of a first material, and an oscillator on the semiconductor substrate, the oscillator including a second resonator formed of a second material, wherein the second resonator is attached in a cavity; the cavity comprising a first recess in said layer of a first material and the edges of the first recess being attached to the substrate, or the cavity comprising a second recess in said substrate and the edges of the second recess being attached to said layer of a first material.
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Citations
27 Claims
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1. A resonator assembly comprising:
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a semiconductor substrate; a resonator gyroscope, the resonator gyroscope including a first resonator formed in a layer of a first material; and an oscillator on the semiconductor substrate, the oscillator including a second resonator formed of a second material; the second resonator being attached in a cavity;
the cavity comprising a first recess in said layer of a first material and the edges of the first recess being attached to the substrate, or the cavity comprising a second recess in said substrate and the edges of the second recess being attached to said layer of a first material;said first resonator being formed by etching said layer of a first material after said attaching the edges of the first recess to the substrate or said attaching the edges of the second recess to said layer of a first material; and said cavity being located below a portion of said layer of a first material that is not etched when forming said first resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A resonator assembly comprising:
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a semiconductor substrate; a resonator gyroscope, the resonator gyroscope including a first resonator formed in a layer of a first material; and an oscillator on the semiconductor substrate, the oscillator including a second resonator formed of a second material; the second resonator being attached in a cavity, the cavity comprising a first recess in said layer of a first material and the edges of the first recess being attached to the substrate, or the cavity comprising a second recess in said substrate and the edges of the second recess being attached to said layer of a first material, wherein the first resonator comprises a central mounting stem, and wherein the cavity is located in said central mounting stem. - View Dependent Claims (13, 14, 15)
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16. A fabrication process for a resonator assembly, the process comprising:
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providing a semiconductor substrate; providing a layer of a first material; etching at least part of a cavity in said layer of first material or in said substrate; attaching an oscillator on the semiconductor substrate, the oscillator including a first resonator formed of a second material; and
assembling said layer of first material on said substrate such that the first resonator is enclosed in said cavity;the process further comprising; forming a second resonator out of said layer of a first material by further etching said layer of a first material after said assembling, wherein said cavity is located below a portion of said layer of a first material that is not etched by said further etching. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification