Micro-electromechanical device
First Claim
1. A micro-electromechanical device, said device comprising:
- a substrate;
a 1st layer level metal plate supported on said substrate;
a 5th layer level metal plate, supported by a first set of two or more metal support pillars laid out around said 5th layer level metal plate on said substrate;
a 3rd layer level metal plate, said 3rd layer level metal plate being attached to two or more bendable metal elements mounted on a second set of metal support pillars laid out around said 3rd layer level metal plate;
two or more 2nd layer level metal stopping plates laid out around said 3rd layer level metal plate with making free ends of said 2nd layer level metal stopping plates overlap slightly to the bottom surface of an edge of said 3rd layer level metal plate below said 3rd layer level metal plate and above said 1st layer level metal plate, while two or more opposite ends to the free ends of said 2nd layer level metal stopping plates are connected to corresponding two or more of a third set of metal support pillars;
two or more 4th layer level metal stopping plates laid out around said 3rd layer level metal plate with making free ends of said 4th layer level metal stopping plates overlap slightly to the upper surface of the edge of said 3rd layer level metal plate above said 3rd layer level metal plate and below said 5th layer level metal plate, while two or more opposite ends to the free ends of said 4th layer level metal stopping plates are connected to said corresponding two or more of said third set of metal support pillars;
a 6th layer level metal plate supported by a metal support pillar built on said 3rd layer level metal plate not to make any contact with said 5th layer level metal plate;
a gap among said 1st layer level metal plate, said 5th layer level metal plate, two or more said 2nd layer level metal stopping plates, two or more said 4th layer metal level stopping plates, two or more said bendable metal elements at 3rd layer level, said 3rd layer level metal plate, said 6th layer level metal plate, and said metal support pillar built on said 3rd layer level metal plate, allowing operability for bending two or more said bendable metal elements at said 3rd layer level, position—
movement of said 3rd layer level metal plate together with said metal support pillar built on said 3rd layer level metal plate and said 6th layer level metal plate, and stopping of position—
movement of said 3rd layer level metal plate by either said 2nd layer level metal stopping plates or said 4th layer level metal stopping plates; and
a position-movable rigid metal member comprising said 3rd layer level metal plate, said 6th layer level metal plate, said metal support pillar built on said 3rd layer level metal plate, and two or more said bendable metal elements fixed to corresponding two or more of said second set of metal support pillars on said substrate; and
an electrical connection of a bias voltage to said position-movable rigid metal member and two or more said 2nd layer metal stopping plates and two or more said 4th layer metal stopping plates, the electrical connection of a complementary output voltage to said 1st layer metal plate, and the electrical connection of a complementary output-bar voltage to said 5th layer metal plate, wherein the voltage differential among said 1st layer plate, said 5th layer plate, and said position-movable rigid metal member is operable to create electrostatic attraction with said 1st layer level metal plate and said 5th layer level metal plate to cause said 3rd layer level metal plate in said position-movable rigid metal member to move toward either said 1st layer level metal plate or said 5th layer level metal plate and to stop and settle on either two or more said 2nd layer level metal stopping plates or two or more said 4th layer level metal stopping plates, allowing said position-movable rigid metal member to take at least two states in positioning.
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Accused Products
Abstract
As for the method that modulates optical path length by the position of reflection plane of light, the movement of the position-movable plate in micrometer-size electromechanical device can be restricted by the stopping plates placed above and below the edge of the position-movable plate, the distance between the stopping plates may be set depending on the desired amount in modulating the optical path length. The voltage differential in the device is operable to create electrostatic attraction, to perform transition movement of the position-movable plate between the stopping plates, the light reflector connected to the position-movable plate takes at least two states in positioning, enabling to modulate the optical path length of reflected light by the light reflector with high reproducibility and high accuracy.
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Citations
16 Claims
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1. A micro-electromechanical device, said device comprising:
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a substrate; a 1st layer level metal plate supported on said substrate; a 5th layer level metal plate, supported by a first set of two or more metal support pillars laid out around said 5th layer level metal plate on said substrate; a 3rd layer level metal plate, said 3rd layer level metal plate being attached to two or more bendable metal elements mounted on a second set of metal support pillars laid out around said 3rd layer level metal plate; two or more 2nd layer level metal stopping plates laid out around said 3rd layer level metal plate with making free ends of said 2nd layer level metal stopping plates overlap slightly to the bottom surface of an edge of said 3rd layer level metal plate below said 3rd layer level metal plate and above said 1st layer level metal plate, while two or more opposite ends to the free ends of said 2nd layer level metal stopping plates are connected to corresponding two or more of a third set of metal support pillars; two or more 4th layer level metal stopping plates laid out around said 3rd layer level metal plate with making free ends of said 4th layer level metal stopping plates overlap slightly to the upper surface of the edge of said 3rd layer level metal plate above said 3rd layer level metal plate and below said 5th layer level metal plate, while two or more opposite ends to the free ends of said 4th layer level metal stopping plates are connected to said corresponding two or more of said third set of metal support pillars; a 6th layer level metal plate supported by a metal support pillar built on said 3rd layer level metal plate not to make any contact with said 5th layer level metal plate; a gap among said 1st layer level metal plate, said 5th layer level metal plate, two or more said 2nd layer level metal stopping plates, two or more said 4th layer metal level stopping plates, two or more said bendable metal elements at 3rd layer level, said 3rd layer level metal plate, said 6th layer level metal plate, and said metal support pillar built on said 3rd layer level metal plate, allowing operability for bending two or more said bendable metal elements at said 3rd layer level, position—
movement of said 3rd layer level metal plate together with said metal support pillar built on said 3rd layer level metal plate and said 6th layer level metal plate, and stopping of position—
movement of said 3rd layer level metal plate by either said 2nd layer level metal stopping plates or said 4th layer level metal stopping plates; anda position-movable rigid metal member comprising said 3rd layer level metal plate, said 6th layer level metal plate, said metal support pillar built on said 3rd layer level metal plate, and two or more said bendable metal elements fixed to corresponding two or more of said second set of metal support pillars on said substrate; and an electrical connection of a bias voltage to said position-movable rigid metal member and two or more said 2nd layer metal stopping plates and two or more said 4th layer metal stopping plates, the electrical connection of a complementary output voltage to said 1st layer metal plate, and the electrical connection of a complementary output-bar voltage to said 5th layer metal plate, wherein the voltage differential among said 1st layer plate, said 5th layer plate, and said position-movable rigid metal member is operable to create electrostatic attraction with said 1st layer level metal plate and said 5th layer level metal plate to cause said 3rd layer level metal plate in said position-movable rigid metal member to move toward either said 1st layer level metal plate or said 5th layer level metal plate and to stop and settle on either two or more said 2nd layer level metal stopping plates or two or more said 4th layer level metal stopping plates, allowing said position-movable rigid metal member to take at least two states in positioning. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification