Micro-electro mechanical apparatus with PN-junction
First Claim
1. A micro-electro mechanical apparatus, comprising:
- a substrate including an electrode disposed on a top surface of the substrate;
a movable mass, being disposed above the electrode, including;
a first P-type semiconductor layer;
a first N-type semiconductor layer connected to the first P-type semiconductor layer;
a first PN-junction formed between the first P-type semiconductor layer and the first N-type semiconductor layer;
a first conductive layer; and
a first electrical insulation layer disposed between the movable mass and the first conductive layer.
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Accused Products
Abstract
A micro-electro mechanical apparatus having a PN-junction is provided. The micro-electro mechanical apparatus includes a movable mass, a conductive layer, and an electrode. The movable mass includes a P-type semiconductor layer and an N-type semiconductor layer. The PN-junction is formed between the P-type semiconductor layer and the N-type semiconductor layer. The micro-electro mechanical apparatus is capable of eliminating abnormal voltage signal when an alternating current passes through the conductive layer. The micro-electro mechanical apparatus is adapted to measure acceleration and magnetic field. The micro-electro mechanical apparatus can be other types of micro-electro mechanical apparatus such as micro-electro mechanical scanning micro-mirror.
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Citations
33 Claims
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1. A micro-electro mechanical apparatus, comprising:
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a substrate including an electrode disposed on a top surface of the substrate; a movable mass, being disposed above the electrode, including; a first P-type semiconductor layer; a first N-type semiconductor layer connected to the first P-type semiconductor layer; a first PN-junction formed between the first P-type semiconductor layer and the first N-type semiconductor layer; a first conductive layer; and a first electrical insulation layer disposed between the movable mass and the first conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A micro-electro mechanical apparatus, being capable of detecting a magnetic force, comprising:
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a substrate including an electrode disposed on a top surface of the substrate; a movable mass, being disposed above the electrode and configured to rotate about an axis, including; a first P-type semiconductor layer having a bottom surface facing the electrode; a first N-type semiconductor layer having a bottom surface connected to a top surface of the first P-type semiconductor layer; a first PN-junction formed between the first P-type semiconductor layer and the first N-type semiconductor layer; a first electrical insulation layer disposed on a top surface of the first N-type semiconductor layer; a first conductive layer disposed on the first electrical insulation layer; and a first spring, being connected to the movable mass along a direction parallel to the axis, including; a third P-type semiconductor layer connected to the first P-type semiconductor layer; a third N-type semiconductor layer having a bottom surface connected to a top surface of the third P-type semiconductor layer; and a third PN-junction formed between the third P-type semiconductor layer and the third N-type semiconductor layer. - View Dependent Claims (14, 15, 16)
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17. A micro-electro mechanical apparatus, comprising:
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a substrate including an electrode disposed on a top surface of the substrate; a movable mass, being disposed above the electrode and configured to rotate about an axis, including; a first P-type semiconductor layer having a bottom surface facing the electrode; a first N-type semiconductor layer having a bottom surface connected to a top surface of the first P-type semiconductor layer; a first PN-junction formed between the first P-type semiconductor layer and the first N-type semiconductor layer; a first electrical insulation layer disposed on a top surface of the first N-type semiconductor layer; a first conductive layer disposed on the first electrical insulation layer; a first spring connected to the frame; and a second spring disposed in the frame and connected to the frame; wherein the second spring and the first spring are arranged along a straight line which is parallel to the axis. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A micro-electro mechanical apparatus, being adapted to detecting a magnetic force and an acceleration, comprising:
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a substrate comprising an electrode disposed on a top surface of the substrate; a movable mass, being disposed above the electrode and configured to rotate about an axis, including; a first P-type semiconductor layer having a bottom surface facing the electrode; a first N-type semiconductor layer having a bottom surface connected to a top surface of the first P-type semiconductor layer; and a first PN-junction formed between the first P-type semiconductor layer and the first N-type semiconductor layer; a first electrical insulation layer disposed on a top surface of the first N-type semiconductor layer; a first conductive layer disposed on the first electrical insulation layer; and a controlling and switching unit configured to control the electrical current supply for the first conductive layer. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification