Microstructure devices, methods of forming a microstructure device and a method of forming a MEMS device
First Claim
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1. A method of forming a microstructure device comprising:
- forming a monolithic microstructure device feature coupled with a semiconductive substrate;
providing a conductive structure directly upon at least a portion of the microstructure device feature;
releasing the microstructure device feature from the semiconductive substrate; and
wherein the conductive structure comprises at least a portion of a capacitor.
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Abstract
Microstructure devices, methods of forming a microstructure device and a method of forming a MEMS device are described. According to one aspect, a microstructure device includes: a semiconductive substrate; a monolithic microstructure device feature coupled with the semiconductive substrate, and wherein at least a portion of the microstructure device feature is configured to move relative to the semiconductive substrate; and a conductive structure provided directly upon the microstructure device feature.
41 Citations
22 Claims
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1. A method of forming a microstructure device comprising:
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forming a monolithic microstructure device feature coupled with a semiconductive substrate;
providing a conductive structure directly upon at least a portion of the microstructure device feature;
releasing the microstructure device feature from the semiconductive substrate; and
wherein the conductive structure comprises at least a portion of a capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20)
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8. A method of forming a microstructure device comprising:
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forming a microstructure device feature coupled with a semiconductive substrate;
depositing a conductive structure upon at least a portion of the microstructure device feature using chemical vapor deposition;
releasing at least a portion of the microstructure device feature from the semiconductive substrate; and
wherein the depositing comprises depositing the conductive structure upon a sidewall of the microstructure device feature, and further comprising depositing another conductive structure using chemical vapor deposition directly upon a sidewall of the semiconductive substrate arranged opposite the sidewall of the microstructure device feature to form a capacitor. - View Dependent Claims (9, 10, 11, 12)
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13. A method of forming a microstructure device comprising:
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forming a plurality of trenches within a semiconductive substrate to define a microstructure device feature, the semiconductive substrate and the microstructure device feature having opposing sidewalls;
forming respective conductive structures directly upon respective portions of the opposing sidewalls of the semiconductive substrate and the microstructure device feature;
undercutting at least a portion of the microstructure device feature to release the portion of the microstructure device feature from the substrate to permit the portion of the microstructure to move relative to the substrate; and
wherein the forming the respective conductive structures comprises forming the conductive structures to comprise a capacitor. - View Dependent Claims (14, 21)
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15. A method of forming a MEMS device comprising:
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providing a semiconductive substrate;
forming plural trenches having bottom surfaces within the semiconductive substrate to define a MEMS device feature between the trenches, the semiconductive substrate and the microstructure device feature having opposing sidewalls;
depositing a titanium nitride layer using chemical vapor deposition upon at least a portion of an upper surface of the semiconductive substrate, upon the opposing sidewalls of the semiconductive substrate and the microstructure device feature to form capacitor electrodes, and upon the bottom surfaces;
removing the titanium nitride layer upon the bottom surfaces of the trenches; and
undercutting at least a portion of the microstructure device feature to release the portion of the microstructure device feature from the substrate to permit the portion of the microstructure device feature to move relative to the substrate.
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22. A method of forming a microstructure device comprising:
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forming a monolithic microstructure device feature coupled with a semiconductive substrate;
providing a conductive structure directly upon at least a portion of the microstructure device feature;
releasing the microstructure device feature from the semiconductive substrate; and
wherein the providing comprises providing the conductive structure upon a sidewall of the microstructure device feature, and further comprising providing another conductive structure directly upon a sidewall of the semiconductive substrate arranged opposite the sidewall of the microstructure device feature to form a capacitor.
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Specification