Gyroscopes using surface electrodes
First Claim
1. A microelectromechanical systems (MEMS) gyroscope comprising:
- a top substrate including;
an outermost structure;
a first driving structure disposed within the outermost structure, the first driving structure including first driving electrodes disposed on a bottom surface of the first driving structure;
a bottom substrate disposed below the top substrate, the bottom substrate including second driving electrodes disposed on a top surface of the bottom substrate, the second driving electrodes substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes, where the first and second driving electrodes are further configured to provide a capacitance signal based on the movement of the first driving structure, the capacitance signal being generated based on the first driving structure moving relative to the second driving electrodes;
a first sensing structure comprising first sensing electrodes disposed on a bottom surface of the first sensing structure along at least one side wall of the first sensing structure, the first sensing electrodes being aligned substantially parallel to the at least one side wall of the first sensing structure, andthe bottom substrate further includes second sensing electrodes disposed on the top surface of the bottom substrate, the second sensing electrodes substantially aligned below the first sensing electrodes of the first sensing structure, where the first and second sensing electrodes are configured to provide a capacitance signal based on the movement of the first sensing structure, the capacitance signal being generated based on the first sensing structure moving relative to the second sensing electrodes, wherein the first driving electrodes are disposed adjacent and perpendicular to the first sensing electrodes.
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Abstract
Gyroscopes using surface electrodes are provided. In this regard, a representative microelectromechanical systems (MEMS) gyroscope, among others, includes a top substrate and a bottom substrate. The top substrate includes an outermost structure that is open and enclosed and a first driving structure that is disposed within the outermost structure and includes first driving electrodes disposed on a bottom surface. The bottom substrate is disposed below the top substrate and includes second driving electrodes disposed on a top surface of the bottom substrate. The second driving electrodes are substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes. The first and second driving electrodes are also configured to provide a capacitance signal based on the movement of the first driving structure.
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Citations
27 Claims
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1. A microelectromechanical systems (MEMS) gyroscope comprising:
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a top substrate including; an outermost structure; a first driving structure disposed within the outermost structure, the first driving structure including first driving electrodes disposed on a bottom surface of the first driving structure; a bottom substrate disposed below the top substrate, the bottom substrate including second driving electrodes disposed on a top surface of the bottom substrate, the second driving electrodes substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes, where the first and second driving electrodes are further configured to provide a capacitance signal based on the movement of the first driving structure, the capacitance signal being generated based on the first driving structure moving relative to the second driving electrodes; a first sensing structure comprising first sensing electrodes disposed on a bottom surface of the first sensing structure along at least one side wall of the first sensing structure, the first sensing electrodes being aligned substantially parallel to the at least one side wall of the first sensing structure, and the bottom substrate further includes second sensing electrodes disposed on the top surface of the bottom substrate, the second sensing electrodes substantially aligned below the first sensing electrodes of the first sensing structure, where the first and second sensing electrodes are configured to provide a capacitance signal based on the movement of the first sensing structure, the capacitance signal being generated based on the first sensing structure moving relative to the second sensing electrodes, wherein the first driving electrodes are disposed adjacent and perpendicular to the first sensing electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A microelectromechanical systems (MEMS) gyroscope comprising:
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a top substrate including; an outermost structure; a first sensing structure disposed within the outermost structure, the first sensing structure including first sensing electrodes disposed on a bottom surface of the first sensing structure along at least one side wall of the first sensing structure, the first sensing electrodes being aligned substantially parallel to the at least one side wall of the first sensing structure, and a first driving structure that is disposed within the first sensing structure, the first driving structure including first driving electrodes disposed on a bottom surface of the first driving structure; and a bottom substrate disposed below the top substrate, the bottom substrate including second driving electrodes disposed on a top surface of the bottom substrate, the second driving electrodes substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes, where the first and second driving electrodes are further configured to provide a capacitance signal based on the movement of the first driving structure, the capacitance signal being generated based on the first driving structure moving relative to the second driving electrodes, wherein the first driving electrodes are disposed adjacent and perpendicular to the first sensing electrodes. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A microelectromechanical systems (MEMS) gyroscope comprising:
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a top substrate including; an outermost structure; and a first driving structure disposed within the outermost structure, the first driving structure including first driving electrodes disposed on a bottom surface of the first driving structure; and a bottom substrate disposed below the top substrate, the bottom substrate including second driving electrodes disposed on a top surface of the bottom substrate, the second driving electrodes substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes, where the first and second driving electrodes are further configured to provide a capacitance signal based on the movement of the first driving structure, the capacitance signal being generated based on the first driving structure moving relative to the second driving electrodes; a first sensing structure comprising first sensing electrodes disposed on a bottom surface of the first sensing structure along at least one side wall of the first sensing structure, the first sensing electrodes being aligned substantially parallel to the at least one side wall of the first sensing structure, and the bottom substrate further includes second sensing electrodes disposed on the top surface of the bottom substrate, the second sensing electrodes substantially aligned below the first sensing electrodes of the first sensing structure, where the first and second sensing electrodes are configured to provide a capacitance signal based on the movement of the first sensing structure, the capacitance signal being generated based on the first sensing structure moving relative to the second sensing electrodes; wherein the top substrate further includes a second driving structure disposed within the outermost structure, the second driving structure adjacent to the first driving structure, the second driving structure including third driving electrodes disposed on a bottom surface of the second driving structure, and the bottom substrate further includes fourth driving electrodes disposed on the top surface of the bottom substrate, the fourth driving electrodes substantially aligned below the third driving electrodes such that a force can be applied to the second driving structure by an electrostatic force generated between the third and fourth driving electrodes, where the third and fourth driving electrodes are further configured to provide a capacitance signal based on the movement of the second driving structure, the capacitance signal being generated based on the second driving structure moving relative to the fourth driving electrodes and fourth sensing electrodes, wherein the second driving structure further includes third sensing electrodes disposed on the bottom surface of the second driving structure, the third sensing electrodes being disposed adjacent and perpendicular to the third driving electrodes, and wherein the bottom substrate further includes fourth sensing electrodes disposed on the top surface of the bottom substrate, the fourth sensing electrodes substantially aligned below the third sensing electrodes of the second driving structure, where the third and fourth sensing electrodes are configured to provide a capacitance signal based on the movement of the first sensing second driving structure, the capacitance signal being generated based on the first sensing second driving structure moving relative to the fourth sensing electrodes. - View Dependent Claims (19)
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20. A microelectromechanical systems (MEMS) gyroscope comprising:
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a top substrate including; an outermost structure; a first sensing structure disposed within the outermost structure, the first sensing structure including first sensing electrodes disposed on a bottom surface of the first sensing structure along at least one side wall of the first sensing structure, the first sensing electrodes being aligned substantially parallel to the at least one side wall of the first sensing structure, and a first driving structure that is disposed within the first sensing structure, the first driving structure including first driving electrodes disposed on a bottom surface of the first driving structure; and a bottom substrate disposed below the top substrate, the bottom substrate including second driving electrodes disposed on a top surface of the bottom substrate, the second driving electrodes substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes, where the first and second driving electrodes are further configured to provide a capacitance signal based on the movement of the first driving structure, the capacitance signal being generated based on the first driving structure moving relative to the second driving electrodes, wherein the bottom substrate further includes second sensing electrodes disposed on the top surface of the bottom substrate, the second sensing electrodes substantially aligned below the first sensing electrodes, where the first and second sensing electrodes are configured to provide a capacitance signal based on the movement of the first sensing structure, the capacitance signal being generated based on the first sensing structure moving relative to the second sensing electrodes, wherein the top substrate further includes a second driving structure disposed within the first sensing structure, wherein the first sensing structure is movable relative to the first driving structure and the second driving structure, the second driving structure opposite to the first driving structure, the second driving structure including third driving electrodes disposed on a bottom surface of the second driving structure; and the bottom substrate further includes fourth driving electrodes disposed on the top surface of the bottom substrate, the fourth driving electrodes substantially aligned below the third driving electrodes. - View Dependent Claims (21, 22)
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23. A microelectromechanical systems (MEMS) gyroscope comprising:
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a top substrate including; an outermost structure; a first sensing structure disposed within the outermost structure, the first sensing structure including first sensing electrodes disposed on a bottom surface of the first sensing structure along at least one side wall of the first sensing structure, the first sensing electrodes being aligned substantially parallel to the at least one side wall of the first sensing structure, and a first driving structure that is disposed within the first sensing structure, the first driving structure including first driving electrodes disposed on a bottom surface of the first driving structure; and a bottom substrate disposed below the top substrate, the bottom substrate including second driving electrodes disposed on a top surface of the bottom substrate, the second driving electrodes substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes, where the first and second driving electrodes are further configured to provide a capacitance signal based on the movement of the first driving structure, the capacitance signal being generated based on the first driving structure moving relative to the second driving electrodes, wherein the bottom substrate further includes second sensing electrodes disposed on the top surface of the bottom substrate, the second sensing electrodes substantially aligned below the first sensing electrodes, where the first and second sensing electrodes are configured to provide a capacitance signal based on the movement of the first sensing structure, the capacitance signal being generated based on the first sensing structure moving relative to the second sensing electrodes, wherein the top substrate further includes a second driving structure disposed within a second sensing structure, the second sensing structure disposed within the outermost structure and adjacent to the first sensing structure, the second driving structure including third driving electrodes disposed on a bottom surface of the second driving structure, the second sensing structure including third sensing electrodes disposed on a bottom surface of the second sensing structure along at least one side wall of the second sensing structure, the third sensing electrodes being aligned substantially parallel to the at least one side wall of the second sensing structure; and the bottom substrate further includes fourth driving electrodes and fourth sensing electrodes disposed on the top surface of the bottom substrate, the fourth driving electrodes substantially aligned below the third driving electrodes and the fourth sensing electrodes substantially aligned below the third sensing electrodes. - View Dependent Claims (24, 25, 26)
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27. A microelectromechanical systems (MEMS) gyroscope comprising:
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a top substrate including; an outermost structure; a first sensing structure disposed within the outermost structure, the first sensing structure including first sensing electrodes disposed on a bottom surface of the first sensing structure along at least one side wall of the first sensing structure, the first sensing electrodes being aligned substantially parallel to the at least one side wall of the first sensing structure, and a first driving structure that is disposed within the first sensing structure, the first driving structure including first driving electrodes disposed on a bottom surface of the first driving structure; and a bottom substrate disposed below the top substrate, the bottom substrate including second driving electrodes disposed on a top surface of the bottom substrate, the second driving electrodes substantially aligned below the first driving electrodes such that a force can be applied to the first driving structure by an electrostatic force generated between the first and second driving electrodes, where the first and second driving electrodes are further configured to provide a capacitance signal based on the movement of the first driving structure, the capacitance signal being generated based on the first driving structure moving relative to the second driving electrodes, wherein the bottom substrate further includes second sensing electrodes disposed on the top surface of the bottom substrate, the second sensing electrodes substantially aligned below the first sensing electrodes, where the first and second sensing electrodes are configured to provide a capacitance signal based on the movement of the first sensing structure, the capacitance signal being generated based on the first sensing structure moving relative to the second sensing electrodes, wherein the top substrate further includes a second driving structure disposed within the first sensing structure, the second driving structure opposite to the first driving structure, the second driving structure including third driving electrodes disposed on a bottom surface of the second driving structure; and the bottom substrate further includes fourth driving electrodes disposed on the top surface of the bottom substrate, the fourth driving electrodes substantially aligned below the third driving electrodes, wherein the top substrate further includes a center member disposed within the first sensing structure and between the first driving structure and the second driving structure.
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Specification