AOI Electronics Co.

Takamatsu-shi, Japan

AOI Electronics Co.

Takamatsu-shi, Japan
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A vibration driven power generation element according to the present invention includes: a three dimensionally shaped movable comb tooth electrode comprising a plurality of comb teeth of which interiors are filled with an insulating material, and having an SiO_(2 )layer into which alkali ions are injected provided upon its outer surface; and a fixed type comb tooth electrode provided with a plurality of comb teeth made from Si the interiors of which are doped so as to have low electrical resistance, being arranged with the three dimensionally shaped movable comb tooth electrode opposed thereto and interleaved thereinto.


A method for manufacturing a three-dimensionally shaped comb-tooth electret electrode, provided with positive ions, includes: forming a three-dimensional movable comb-tooth electrode 21 and a three-dimensional fixed comb-tooth electrode 22 from an Si substrate 1; contacting a vapor including ions thereto, and forming an oxide layer including ions upon surfaces of the comb-tooth electrodes with heat applied thereto; and applying a voltage between the movable electrode 21 and the fixed electrode 22 with heat applied thereto, and thereby causing the ions included in the oxide layer to shift to a surface of the oxide layer; wherein, the voltage between the movable electrode 21 and the fixed electrode 22 is changed, so that the operation of each of the comb-teeth of the movable electrode 21 being alternatingly pulled in against two opposed comb-teeth of the fixed electrode 22 is repeated, and the pulling in voltage and the pulled-in state release voltage are gradually increased.


Patent
Aoi Electronics Co. | Date: 2014-09-10

A photoreception device includes: a substrate; a photoreceptor element including a photoreceptor portion upon an upper surface thereof and a lower surface thereof is mounted upon the substrate; and an insulating resin mass that contains a flat upper surface and an opening that exposes the photoreceptor portion of the photoreceptor element, that is formed upon the substrate to be thicker than thickness of the photoreceptor element, and that adheres closely against side surfaces of the photoreceptor element, the side surfaces surrounding the photoreceptor element. The insulating resin mass contains a step portion that is provided to a height between the flat upper surface thereof and the upper surface of the photoreceptor portion; and the step portion extends parallel to at least one pair of mutually opposed side surfaces of the photoreceptor element, at a periphery of the opening.


Patent
AOI Electronics Co. | Date: 2014-05-21

An electrostatic transformer includes: a first fixed electrode; a second fixed electrode; a movable electrode displaceably supported by a flexible member within a space between the first fixed electrode and the second fixed electrode; and permanently charged films disposed on electrode surfaces of the movable electrode. And: an AC output voltage corresponding to a change in an electric charge induced at the second fixed electrode by displacing the movable electrode in response to an AC input voltage applied between the first fixed electrode and the movable electrode is extracted; and a ratio of the AC input voltage and the AC output voltage is determined based upon a ratio of an electromechanical coupling factor at an input-side electrostatic actuator, configured with the first fixed electrode and the movable electrode, and an electromechanical coupling factor at an output-side electrostatic actuator, configured with the second fixed electrode and the movable electrode.


Patent
Aoi Electronics Co. | Date: 2014-03-28

A method for manufacturing a semiconductor device includes: a fixing step in which semiconductor chips are mounted on and fixed to predetermined positions on an upper surface of a single starting substrate to form individual substrates; a connection step in which electrodes of the semiconductor chips and of the starting substrate are connected by wires; a sealing step in which on the upper surface of the starting substrate, the resin is potted among the semiconductor chips to seal an entire lateral circumference of each of the semiconductor chip; a bonding step in which a single starting protective cover to form individual protective covers is bonded to a surface of the resin so as to extend the semiconductor chips; and a cutting step in which an assembly of the semiconductor devices formed by bonding the starting protective cover to the starting substrate via the resin is cut to the semiconductor devices.


Patent
AOI Electronics Co. | Date: 2012-10-31

A photoreception device includes: a substrate; a photoreceptor element including a photoreceptor portion upon an upper surface thereof and a lower surface thereof is mounted upon the substrate; and an insulating resin mass that contains a flat upper surface and an opening that exposes the photoreceptor portion of the photoreceptor element, that is formed upon the substrate to be thicker than thickness of the photoreceptor element, and that adheres closely against side surfaces of the photoreceptor element, the side surfaces surrounding the photoreceptor element. The insulating resin mass contains a step portion that is provided to a height between the flat upper surface thereof and the upper surface of the photoreceptor portion; and the step portion extends parallel to at least one pair of mutually opposed side surfaces of the photoreceptor element, at a periphery of the opening.


An electrostatic induced type electromechanical transducer includes: a first electrode having a plurality of first comb tooth electrodes; a second electrode having a plurality of second comb tooth electrodes arranged meshed with the plurality of first comb tooth electrodes through respective gaps; a plurality of dielectric members at an electric field formation space between the first comb tooth electrodes and the second comb tooth electrodes and made of a material having a relative dielectric constant greater than 1; and a base that fixedly supports or movably supports the first electrode, the second electrode, and the dielectric members, wherein the first electrode and/or the second electrode, and the dielectric members are capable of being relatively displaced from each other.


Patent
Aoi Electronics Co. | Date: 2014-03-05

A method for forming an electret containing positive ions, includes: a first step of contacting water vapor including positive ions to a Si substrate (1) to which heat is being applied, and forming an oxide layer including those ions; a second step of, along with applying an electric field that makes the side of the oxide layer that does not contact the Si substrate (1) be the negative side, and that makes its other side be a positive side, applying heat to the Si substrate (1) in a hydrogen atmosphere, and causing the ions in the oxide layer to shift; and a third step of contacting water vapor including a chemical substance, in an atmosphere of an inactive gas, for forming a hydrophobic chemically adsorbed monomolecular layer, and thus forming a hydrophobic membrane (6) upon the oxide layer; wherein the second step and the third step are performed continuously within one common vessel.


A method for manufacturing a three-dimensionally shaped comb-tooth electret electrode, provided with positive ions, includes: forming a three-dimensional movable comb-tooth electrode and a three-dimensional fixed comb-tooth electrode from an Si substrate; contacting a vapor including ions thereto, and forming an oxide layer including ions upon surfaces of the comb-tooth electrodes with heat applied thereto; and applying a voltage between the movable electrode and the fixed electrode with heat applied thereto, and thereby causing the ions included in the oxide layer to shift to a surface of the oxide layer; wherein, the voltage between the movable electrode and the fixed electrode is changed, so that the operation of each of the comb-teeth of the movable electrode being alternatingly pulled in against two opposed comb-teeth of the fixed electrode is repeated, and the pulling in voltage and the pulled-in state release voltage are gradually increased.


Patent
AOI Electronics Co. | Date: 2013-08-29

A method for forming an electret containing positive ions, includes: a first step of contacting water vapor including positive ions to a Si substrate to which heat is being applied, and forming an oxide layer including those ions; a second step of, along with applying an electric field that makes the side of the oxide layer that does not contact the Si substrate be the negative side, and that makes its other side be a positive side, applying heat to the Si substrate in a hydrogen atmosphere, and causing the ions in the oxide layer to shift; and a third step of contacting water vapor including a chemical substance, in an atmosphere of an inactive gas, for forming a hydrophobic chemically adsorbed monomolecular layer, and thus forming a hydrophobic membrane upon the oxide layer; wherein the second step and the third step are performed continuously within one common vessel.

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