摘要:
There are provided a semiconductor device and a semiconductor chip, in which the interconnection is made to be highly reliable by stacking three or more layers of chips without contact therebetween. A semiconductor chip of the present invention comprises a first signal transmission circuit, a silicon substrate on which a first changeover switch is formed, and an interconnection layer on which a first capacitive-coupling upper electrode is formed, wherein a first capacitive-coupling lower electrode is additionally formed on the rear surface of the silicon substrate through a first via hole that penetrates the silicon substrate and, whereas the first capacitive-coupling upper electrode is directly connected to the first signal transmission circuit, the first capacitive-coupling lower electrode is connected to the first signal transmission circuit through the first via hole and through the first changeover switch.
摘要:
A light beam scanner includes a supporting substrate. Fixed electrodes of a first set are provided on the supporting substrate to oppose to each other. A mirror is provided between the fixed electrodes, has torsion bars physically connected to the supporting substrate and a mirror electrode section in end portions of the mirror opposing to the fixed electrodes at least. The mirror rotatably vibrates between an upper position of the one fixed electrode and a lower position thereof by torsion force of the torsion bars and electrostatic force due to the voltage using the torsion bars as a rotation axis, when a voltage is applied between one of the fixed electrodes and the electrode section.
摘要:
A position input device that makes it possible to control the position of a cursor by directly utilizing the movement of a finger of a person with good operability and convenience. This device includes an electrode support formed to define a space into which a position indicator is inserted. A plurality of electrode pairs are fixed on the support. Each of the plurality of electrode pairs generates the capacitance. A plurality of capacitance sensors are provided. Each of the plurality of capacitance sensors serves to sense the capacitance of a corresponding one of the plurality of electrode pairs to output a capacitance signal, respectively. A position calculator calculates the position of the position indicator based on the capacitance signals from the plurality of capacitance sensors. A cursor control signal generator generates a cursor control signal. The cursor control signal generated by the cursor control signal generator is sent to a computer to be used to locate a cursor on a screen.
摘要:
A device for measuring the ingredients in liquid, primarily a body fluid. A valve has a reservoir composed of a communicating hole in the valve and a cell which is able to communicate with the reservoir. The cell may be connected with an inlet for a diluent through the reservoir and has a sensor and a stirrer. It is possible to measure the ingredients with accuracy and to realize a continuous monitoring thereof.
摘要:
A second ground plane (18); has one end opposite to a connector (14), which end is connected to a first ground plane (17) by resistor connection means (41). Accordingly, it is possible to lower Q of resonance of the aforementioned ground structure by the resistor connection means (41) and to prevent generation of an intense electromagnetic field attributed to an electromagnetic field of a data processing circuit. Especially when the resistor connection means (41) has a resistance value identical to a characteristic impedance of the ground structure, the ground structure is terminated in a matched way and it is possible to assure prevention of generation of an electromagnetic field attributed to resonance.
摘要:
A design assisting system is constructed as a CAD (computer-aided design) system for assisting in designing printed-circuit boards or other electronic devices. The system makes it possible to design layouts for reducing an unwanted electromagnetic radiation due to a common-mode current. The system has a first tool for converting at least a set of an electronic device, an interconnection, and a ground plane from layout information of a circuit board into a model for analyzing an electromagnetic field, a second tool for specifying a frequency and calculating a magnetic field intensity distribution near the ground plane using the model, and a third tool for superposing the calculated magnetic field intensity distribution and the position of the interconnection, determining whether a position where a magnetic field or a current is strong and the position of the interconnection are close to each other or not, and outputting a determined result.
摘要:
A method of manufacturing a semiconductor device having a region which is partially thinner than the rest thereof is disclosed. A semiconductor thin layer is formed on an insulating layer by an annealing treatment after implanting ions into the semiconductor substrate at a predetermined depth. A semiconductor material is formed by epitaxial growing to a predetermined thickness on the semiconductor thin layer. The the insulating layer or eliminating the insulating layer and a part of the semiconductor substrate under the insulating layer is eliminated by an etching operation.
摘要:
A pendulum-like member is formed in a silicon substrate. Optical fiber portions which include endface mirrors are disposed on the substrate proper and on the pendulum member. The position of the pendulum member is adjusted by applying a voltage across the member and an adjacent section(s) of the substrate thus enabling the optical length of the device to be adjusted.
摘要:
There are provided a semiconductor device and a semiconductor chip, in which the interconnection is made to be highly reliable by stacking three or more layers of chips without contact therebetween. A semiconductor chip of the present invention comprises a first signal transmission circuit, a silicon substrate on which a first changeover switch is formed, and an interconnection layer on which a first capacitive-coupling upper electrode is formed, wherein a first capacitive-coupling lower electrode is additionally formed on the rear surface of the silicon substrate through a first via hole that penetrates the silicon substrate and, whereas the first capacitive-coupling upper electrode is directly connected to the first signal transmission circuit, the first capacitive-coupling lower electrode is connected to the first signal transmission circuit through the first via hole and through the first changeover switch.
摘要:
A second ground plane (18); has one end opposite to a connector (14), which end is connected to a first ground plane (17) by resistor connection element (41). Accordingly, it is possible to lower Q of resonance of the ground structure by the resistor connection element (41) and to prevent generation of an intense electromagnetic field attributed to an electromagnetic field of a data processing circuit. Especially when the resistor connection element (41) has a resistance value identical to a characteristic impedance of the ground structure, the ground structure is terminated in a matched way and it is possible to assure prevention of generation of an electromagnetic field attributed to resonance.