Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing an inertial sensor having a failure threshold. SOLUTION: A process of manufacturing the inertial sensor, having a failure threshold includes the steps of: on the substrate 2 of a semiconductor wafer 1, forming at least one sample element 6 embedded in a sacrificial region 3 and 12; on the sacrificial region 3 and 12, forming a body 18 connected to the sample element 6; and etching the sacrificial region 3 and 12 to free the body 18 and the sample element 6. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an acoustic transducer which is capable of converting sound waves into a plurality of electrical signals and is capable of suppressing variations in acoustic characteristics.SOLUTION: In an acoustic sensor 11, a vibrating membrane 22 and a fixed membrane 23 are formed on an upper surface of a semiconductor substrate 21. In response to changes in electrostatic capacitance between the vibrating electrode 220 of the vibrating membrane 22 and a fixed electrode 230 of the fixed membrane 23, the acoustic sensor 11 converts sound waves into electrical signals to output them. In the acoustic sensor 11, at least one of the vibrating electrode 220 and the fixed electrode 230 is divided, and a plurality of electrical signals are outputted from the plurality of divided electrodes respectively.
Abstract:
PROBLEM TO BE SOLVED: To reduce the risk of destruction due to impact and reduce the influences of electrostatic interaction. SOLUTION: In a micro-electromechanical device 1, a movable mass body 2 is suspended above a board 3 via an elastic suspension element rotatably around the elastic suspension element, a cover structure 10 is arranged above the movable mass body 2 and has an inner face 10a opposed to the movable mass body 2, and a stopper structure 12 is arranged on the inner face 10a of the cover structure 10 in the state of being protruded toward the movable mass body 2 to stop the motion of the movable mass body 2 being moved farther from the board 3 along an axis z crossing the board 3. The stopper structure 12 is opposed to the movable mass body 2 to reduce the influences of conflicting interaction, particularly to reduce the resultant torsion moment of the movable mass body 2 around the elastic suspension element. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a device and a method for protecting an electronic apparatus in case of falling. SOLUTION: The device for protecting an electronic apparatus includes a motion-detection device for supplying at least one of alert signals S FF , S R in response to conditions of motion of the protection device, a counter 18, a first logic circuit 9 for incrementing the counter 18 in the presence of a first value "1" of the alert signals S FF and S R in a first motion condition, and a second logic circuit 20 for generating a protection signal INT based on the count value C of the counter 18. The first logic circuit 19 decrements the counter 18 in the presence of a second value "0" of the alert signals S FF and S R in the first motion condition. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation:要解决的问题:提供一种在掉电的情况下保护电子设备的装置和方法。 解决方案:用于保护电子设备的装置包括运动检测装置,用于响应于以下条件提供警报信号S SB / R S,S SB / R S / 保护装置的运动,计数器18,第一逻辑电路9,用于在存在警报信号S FF SB>和S R“的第一值”1“时递增计数器18, / SB>和第二逻辑电路20,用于基于计数器18的计数值C产生保护信号INT。第一逻辑电路19在存在第二值“0”的情况下递减计数器18 “在第一运动条件下的警报信号S FF SB>和S R SB>。 版权所有(C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a memory device generating bias voltage varied temporally and monotonously with a simple configuration. SOLUTION: This memory device (100) is provided with a plurality of memory cells (MC) storing a value respectively, at least one reference cell (Mr 0 to Mr 2 ), a bias means (115) for applying bias voltage (Vc, Vr) having a pattern of almost monotonous temporal time variation to a selected one group of the memory cells and at least the one reference cell, a means (130) detecting that current of the selected each memory cell and each reference cell reached the threshold value, and a means (145) for specifying a value stored in selected each memory cell conforming to time relation in which a current of the selected memory cell reaches the threshold value and a current of at least the one reference cell reaches the threshold value. The bias means is provided with a means (305) supplying the prescribed biasing current (Ib) to the selected memory cell and at least the one reference cell. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce the area where a cavity occupies on a silicon, and to form various forms of cavities by simply and economically form the cavity. SOLUTION: A process for forming an embedded cavity 20 in a semiconductor material main body 11 comprises steps of: forming a mask 16 having a plurality of openings 18, each of which has a side surface or a dominant direction, having an inclination between 44°-46° to a specific crystalline plane of the semiconductor material body, on the top of the semiconductor material body; and anisotropically etching the semiconductor material body by using the mask. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide at lower production costs an optical sensor that is compact and prevents the accumulation of dust or the like thereon. SOLUTION: A method of manufacturing an enclosed optical sensor that has a step of forming a plurality of optical sensors 24, which are placed on a wafer 10 of a semiconductor material at a certain distance from each other, has a step of bonding a plate 30 of a translucent material to the wafer 10 in such a way to enclose the optical sensors 24, and a step of dividing the wafer 10 into a plurality of dices 40. Each of the plurality of dices 40 has the optical sensor 24 and each portion 41 of each of the dices 40. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To reduce noise caused by illumination with light.SOLUTION: In the acoustic sensor 1, a conductive vibrating film 14 and an upper fixing electrode plate 5 are arranged on the upper surface of a silicon substrate 11 with an air gap 22 therebetween, and impurities are doped on the surface of the silicon substrate 11. Thereby, electric current to be caused by illumination with light on the surface of the silicon substrate 11 can be reduced, and the noise to be caused by illumination with light can be reduced.
Abstract:
PROBLEM TO BE SOLVED: To provide a detecting device for the midpoint voltage of a transistor half bridge circuit. SOLUTION: The half bridge circuit composed of a first transistor M1 and a second transistor M2 is driven so that the midpoint voltage undergoes transition from a low voltage value to a high voltage value and vice versa and is adapted to form a low impedance node for current signals Isink, Isource circulating in a capacitor. The detecting device is adapted to detect the current signals Isink, Isource, and has a detection means 10 which is adapted to output at least one first signal HL_comm or LH_comm indicating the transition from the low value to the high value or from the high value to the low value of the midpoint voltage according to the current signal. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To internally identify and correct a defective part in the memory device, increase service life thereof and improve manufacturing yield. SOLUTION: The memory device (20) has: a memory block (1) formed by a plurality of standard sectors (15) and a redundancy portion (2); a control circuit (3) which controls programming and erasing of the data of the memory cells; and a correctness verifying circuit (7) for the data stored in the memory cells. The correctness verifying circuit (7) is enabled by the control circuit (3) and generates an incorrect-datum signal in the event of detection of at least one non-functioning cell. The control circuit moreover activates redundancy, enables the redundancy portion (2) and stores redundancy data in a redundancy-memory stage (5b) in the presence of an incorrect datum. Various solutions are presented that implement column, row and sector redundancy, both in case of erasing and programming. COPYRIGHT: (C)2010,JPO&INPIT