Source: http://www.google.com/patents/US7762134?dq=7,468,661
Timestamp: 2017-09-20 18:30:46
Document Index: 762700616

Matched Legal Cases: ['Application No. 2006', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'Application No. 10']

Patent US7762134 - Dynamic quantity sensor - Google Patents
A dynamic quantity sensor includes a base, a sensor chip made of a rectangular board having a corner portion, and a bump. The sensor chip includes a detector, and a plurality of pads. The detector has a movable part, which is displaceable when a dynamic quantity is applied thereto, and detects the dynamic...http://www.google.com/patents/US7762134?utm_source=gb-gplus-sharePatent US7762134 - Dynamic quantity sensor
Publication number US7762134 B2
Application number US 11/892,818
Also published as CN100567992C, CN101149389A, DE102007044204A1, DE102007044204B4, US20080066546
Publication number 11892818, 892818, US 7762134 B2, US 7762134B2, US-B2-7762134, US7762134 B2, US7762134B2
Inventors Takashi Katsumata
Patent Citations (26), Non-Patent Citations (1), Referenced by (11), Classifications (9), Legal Events (2)
US 7762134 B2
A dynamic quantity sensor includes a base, a sensor chip made of a rectangular board having a corner portion, and a bump. The sensor chip includes a detector, and a plurality of pads. The detector has a movable part, which is displaceable when a dynamic quantity is applied thereto, and detects the dynamic quantity based on a capacitance variation in accordance with a displacement of the movable part. The bump connects the plurality of pads of the sensor chip and the base. The corner portion of the sensor chip is released from the base such that the plurality of pads of the sensor chip is arranged at a location a predetermined distance from the corner portion of the sensor chip.
This application is based on Japanese Patent Application No. 2006-254186 filed on Sep. 20, 2006, the disclosure of which is incorporated herein by reference in its entirety.
In view of the foregoing and other problems, it is an object of the present invention to provide a dynamic quantity sensor.
As shown in FIG. 1, an angular velocity sensor S1 (dynamic quantity sensor) includes a sensor chip 100, a circuit chip 200 (base), and a package 300. The package 300 accommodates the sensor chip 100 and the circuit chip 200. The circuit chip 200 is fixed to the package 300 through an adhesive 500. The sensor chip 100 is layered on the circuit chip 200 through a bump 400.
Next, a method of activating the angular velocity sensor S1 will be described. The circuit chip 200 applies a predetermined driving voltage to the sensor chip 100 through the pads 50, 51, in order to drive the movable part 3 a, 4 a.
When the driving voltage is applied to the pads 50, 51, a capacitor is formed between the fixed electrode 30, 40 and the movable electrode 31, 41, and the capacitor generates an electrostatic attraction force in accordance with a periodic variation of an alternating component of the driving voltage. Thereby, due to the driving beam 35, 45, the movable electrode 31, 41 and the movable electrode 33, 43 integrally and periodically vibrate in the first direction X.
According to this embodiment, the sensor chip 100 includes the detectors 3, 4 and the pads 50, 51, 52, 53, 54 on the same face. The detector 3, 4 includes the movable part 3 a, 4 a, which is displaced when the angular velocity is applied thereto. The angular velocity is detected based on the capacitance variation between the movable part 3 a, 4 a and the fixed part 3 b, 4 b opposing to the movable part 3 a, 4 a.
Further, the pads 50, 51, 52, 53, 54 of the sensor chip 100 and the circuit chip 200 are electrically and mechanically connected to each other through the bump 400. Because the pads 50, 51, 52, 53, 54 are not arranged adjacent to the corner 101 of the sensor chip 100, the corner 101 of the sensor chip 100 is released from the circuit chip 200.
The detector area or the fixed part area of the sensor chip 100 represents a shaded area shown in FIG. 5. The shaded area is constructed by a first face of the sensor chip 100, on which the detector 3, 4 is arranged, and a second face of the sensor chip 100 opposite to the first face. That is, the pad 50, 51, 52, 53, 54 may be arranged on the second face of the sensor chip 100, when the detector 3, 4 is arrange on the first face of the sensor chip 100, as shown in FIG. 5. Although only the pad 50 is shown in FIG. 5, the pad 51, 52, 53, 54 may be arranged on the second face of the sensor chip 100.
US6796180 * Apr 10, 2002 Sep 28, 2004 Denso Corporation Angular velocity sensor
US6845668 Jan 30, 2002 Jan 25, 2005 Intellimicrons Co., Ltd. Gyroscope
US7000471 * Mar 26, 2004 Feb 21, 2006 Denso Corporation Angular velocity sensor device
US7043987 * Mar 5, 2004 May 16, 2006 Samsung Electronics Co., Ltd. Rotary gyroscope
US7276834 * Jul 20, 2006 Oct 2, 2007 Denso Corporation Electrostatically oscillated device
US7290449 * Mar 15, 2005 Nov 6, 2007 Denso Corporation Physical quantity sensor having angular speed sensor and acceleration sensor
US20020046604 Sep 18, 2001 Apr 25, 2002 Ngk Insulators, Ltd. Angular velocity measuring apparatus
US20060042382 Sep 1, 2004 Mar 2, 2006 Dcamp Jon B Package for MEMS devices
JP2000009471A Title not available
JP2001217280A Title not available
JP2003276000A Title not available
1 Office Action dated May 12, 2009 from the German Patent Office in the corresponding DE Application No. 10 2007 044 204.3 (and English Translation).
US8156804 * Jul 31, 2007 Apr 17, 2012 Denso Corporation Capacitive semiconductor sensor
US8225660 * Jun 2, 2010 Jul 24, 2012 Denso Corporation Dynamic quantity sensor and method of manufacturing the same
US20080093740 * Jul 31, 2007 Apr 24, 2008 Denso Corporation Capacitive semiconductor sensor
US20100307242 * Jun 2, 2010 Dec 9, 2010 Denso Corporation Dynamic quantity sensor and method of manufacturing the same
Cooperative Classification G01C19/5719, G01P15/125, G01P1/023
European Classification G01C19/5719, G01P15/125, G01P1/02B
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KATSUMATA, TAKASHI;REEL/FRAME:019808/0491