Abstract:
An electronic device includes: an outline configuration including a first surface, a second surface facing opposite from the first surface, and a mounting surface coupled to the first and second surfaces; a first substrate including a first electrode; a second substrate including a second electrode; a resin disposed between the first and second substrates; and an electric element sealed with the resin and having an outline configuration of a polyhedron, the electric element being disposed such that a broadest surface of the polyhedron faces one of the first substrate and the second substrate. The first surface is one surface of the first substrate, the one surface being opposite from another surface of the first substrate on a side adjacent to the resin. The second surface is one surface of the second substrate, the one surface being opposite from another surface of the second substrate on a side adjacent to the resin. The mounting surface includes: an exposed surface of the resin between the first and second substrates, and side surfaces of the first and second substrates adjacent to the exposed surface. The first electrode is disposed at an end of the first surface adjacent to the mounting surface and electrically coupled to the electric element. The second electrode is disposed at an end of the second surface adjacent to the mounting surface and electrically coupled to the electric element.
Abstract:
An inertial sensor includes oscillating-type angular velocity sensing element (32), IC (34) for processing signals supplied from angular velocity sensing element (32), capacitor (36) for processing signals, and package (38) for accommodating angular velocity sensing element (32), IC (34), capacitor (36). Element (32) and IC (34) are housed in package (38) via a vibration isolator, which is formed of TAB tape (46), plate (40) on which IC (34) is placed, where angular velocity sensing element (32) is layered on IC (34), and outer frame (44) placed outside and separately from plate (40) and yet coupled to plate (40) via wiring pattern (42).
Abstract:
A sensor device having small variations in sensor characteristics and improved resistance to electrical noise is provided. This sensor device has a sensor unit, which is provided with a frame having an opening, a movable portion held in the opening to be movable relative to the frame, and a detecting portion for outputting an electric signal according to a positional displacement of the movable portion, and a package substrate made of a semiconductor material, and bonded to a surface of the sensor unit. The package substrate has an electrical insulating film on a surface facing the sensor unit. The package substrate is bonded to the sensor unit by forming a direct bonding between an activated surface of the electrical insulating film and an activated surface of the sensor unit at room temperature.
Abstract:
The resolution and the signal-to-noise ration of known force sensors as e.g. capacitive force sensors decrease when scaling them down. To solve this problem there is a solution presented by the usage of a nanostructure as e.g. a carbo nanotube, which is mechanically deformed by a force to be measured. The proposed force sensors comprises a support with two arms carrying the carbon nanotube. The main advantage of this force sensor is a very high sensitivity as the conductance of carbon nanotubes changes several orders of magnitude when a mechanical deformation arises.
Abstract:
A method for making a subsurface electrical contact (34) on a micro-electrical-mechanical-systems (MEMS) device (10). The contact (34) is formed by depositing a layer of polycrystalline silicon (34) onto a surface (16) within a cavity (20) buried under a device silicon layer (24). The polycrystalline silicon layer (34) is deposited in the cavity (20) through holes (30 and 32) etched through the device silicon (24) and reseals the cavity (20) during the polycrystalline silicon deposition step. The polycrystalline silicon layer (24) can then be masked and etched, or etched back to expose the device layer (24) of the micromachined device (10). Through the layer of polycrystalline silicon (34), a center hub (18) of the device (10) may be electrically contacted.
Abstract:
Provided is a sensor device having a small sensor characteristic fluctuation and excellent electrical noise resistance characteristics. The sensor device is provided with a sensor unit, which includes a frame having an opening, a movable section movably held to the frame in the opening, and a detecting section for outputting an electric signal based on the positional dislocation of the movable section. The sensor device is also provided with a package substrate which is formed of a semiconductor material and bonded on the surface of the sensor unit. The package substrate has an electrical insulating film on the surface which faces the sensor unit, and the activation surface of the electric insulating film is directly bonded on the activation surface of the sensor unit at a room temperature. Thus, the package substrate is bonded on the sensor unit.
Abstract:
A proof mass (11) for a MEMS device is provided herein. The proof mass comprises a base (13) comprising a semiconductor material, and at least one appendage (15) adjoined to said base by way of a stem (21). The appendage (15) comprises a metal (17) or other such material that may be disposed on a semiconductor material (19). The metal increases the total mass of the proof mass (11) as compared to a proof mass of similar dimensions made solely from semiconductor materials, without increasing the size of the proof mass. At the same time, the attachment of the appendage (15) by way of a stem (21) prevents stresses arising from CTE differentials in the appendage from being transmitted to the base, where they could contribute to temperature errors.
Abstract:
PURPOSE: A micro inertia sensor and a method for manufacturing the same are provided to be capable of reducing the size of the sensor and simplifying manufacturing processes by improving the structure of the sensor. CONSTITUTION: A micro inertia sensor is provided with a lower glass substrate(1), a lower silicon layer(2) including the first edge part(2a), the first fixing part(2b), a side motion detecting structure(2c), formed at the upper portion of the lower glass substrate, an upper silicon layer(4) includes the second edge part(4a), the second fixing part(4b), and an upper detecting electrode(4c) corresponding to the first edge part, the first fixing part, the side motion detecting structure, respectively, formed at the upper portion of the lower silicon layer, an adhesive layer(3) located between the lower and upper silicon layer, and an upper glass substrate(5) including a conductive line(6) and a via hole(5a), formed at the upper portion of the resultant structure.
Abstract:
본 발명에 따른 MEMS 소자는 멤브레인과, 상기 멤브레인에 연결된 질량체와, 상기 멤브레인에 연결되고 상기 질량체를 변위가능하도록 부유상태로 지지하는 지지부를 포함하고, 상기 멤브레인은 절연 접합층을 중심으로 일측에 상부전극 및 상부 압전체가 배치되고, 타측으로 하부전극 및 하부 압전체가 배치된다.