Micro movable device
First Claim
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1. A micro movable device comprising:
- a movable unit formed above a semiconductor substrate;
a protection cap that is arranged above the semiconductor substrate and the movable unit and protects the movable unit;
a signal line that is formed above the semiconductor substrate and transmit a high-frequency signal, a part of the signal line being provided below the movable unit; and
an insulation layer that has a projection formed to project upward from the semiconductor substrate, the projection being provided at outside of the movable unit in a plain view and being formed at an outside of the protection cap and the insulation layer having coated upper and side surfaces with the signal line, the coated surfaces being provided in a higher position than a bottom of the signal line below the movable unit, whereina position of the signal line on the upper surface of the projection in a height direction is higher than a position of the signal line under the movable unit in a height direction.
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Abstract
A micro movable device includes a protection cap for protecting a movable unit arranged above a semiconductor substrate and the movable unit, signal line for transmitting a high-frequency signal formed above the semiconductor substrate, and insulation layer that has projection formed to project upward from the semiconductor substrate and coated surfaces with the signal line.
2 Citations
20 Claims
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1. A micro movable device comprising:
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a movable unit formed above a semiconductor substrate; a protection cap that is arranged above the semiconductor substrate and the movable unit and protects the movable unit; a signal line that is formed above the semiconductor substrate and transmit a high-frequency signal, a part of the signal line being provided below the movable unit; and an insulation layer that has a projection formed to project upward from the semiconductor substrate, the projection being provided at outside of the movable unit in a plain view and being formed at an outside of the protection cap and the insulation layer having coated upper and side surfaces with the signal line, the coated surfaces being provided in a higher position than a bottom of the signal line below the movable unit, wherein a position of the signal line on the upper surface of the projection in a height direction is higher than a position of the signal line under the movable unit in a height direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A micro movable device comprising:
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a movable unit formed above a semiconductor substrate; a first insulation layer formed above the semiconductor substrate below the movable unit with a gap between the movable unit and the first insulation layer; a protection cap that is arranged above the first insulation layer and the movable unit and protects the movable unit; a first signal line that is arranged at inside of the protection cap and is formed on the first insulation layer with a gap between the movable unit and the first signal line and a part of the first signal line being provided below the movable unit and the first insulation layer; a second insulation layer that are arranged at outside of the protection cap and has a projection formed to project upward from the first insulation layer; and a second signal line electrically connected to the first signal line, and coating upper and side surfaces of the projection of the second insulation layer, the second signal line being provided in a higher position than the part of the first signal line. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A micro movable device comprising:
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a movable unit formed above a semiconductor substrate; a first insulation layer formed above the semiconductor substrate below the movable unit with a gap between the movable unit and the insulation layer; a protection cap that is arranged above the first insulation layer and the movable unit and protects the movable unit; a first signal line that is arranged at inside of the protection cap and is formed on the first insulation layer with a gap between the movable unit and the first signal line; a second insulation layer that is arranged at outside of the protection cap and has a projection formed to project upward from the first insulation layer; a second signal line electrically connected to the first signal line, and coating a surface of the projection of the second insulation layer; a first ground line that is arranged at inside of the protection cap and is formed on the first insulation layer; a third insulation layer that is arranged at outside of the protection cap and has a projection formed to project upward from the first insulation layer; and a second ground line electrically connected to the first ground line and coating an entire exposed surface of the third insulation layer. - View Dependent Claims (17, 18, 19, 20)
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Specification