Magnetic detection device and method for manufacture

• US 7,173,420 B2
• Filed: 02/28/2005
• Issued: 02/06/2007
• Est. Priority Date: 07/16/2004
• Status: Active Grant

• Current Assignee: Amosense Co., Ltd.
• Original Assignee: C&N, Inc.
• Inventors: Tamura, Yasuhiro
• Primary Examiner(s): Patidar, Jay M.
• Application Number:
  US11/067,209
• Publication Number:
  US 20060012364A1
• Time in Patent Office: 708 Days
• Field of Search: 324/246, 324/247, 324/244, 324/260, 324/249, 333/10, 333/52, 333/55.R, 702/150
• US Class Current: 324/247
• CPC Class Codes: G01R 33/0206 Three-component magnetometers
• CPC Class Codes: H01L 2224/05553 being rectangular
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/15153 the die mounting substrate comprising a recess for hosting the device
• CPC Class Codes: H01L 2924/15158 the die mounting substrate being other than a cuboid
• CPC Class Codes: H01L 2924/15159 Side view
• CPC Class Codes: H01L 2924/15162 Top view

Abstract

A magnetic sensor assembly comprising magnetic detection elements is provided. In a magnetic sensor assembly 100 according to the present invention, a magnetic detection element 140 is fixed to a base member 110 and, by having the base member 110 stand upright, it is possible to stand the magnetic detection element 140 upright. Thereby, it becomes easy to manufacture magnetic detection devices which detect three-axis components of terrestrial magnetism vector. In the base member 110, first terminals 120 are provided on a first surface 112 whereas second terminals 124 are provided on a second surface 114. The first terminals 120 are electrically connected with electrodes of the magnetic detection element 140 whereas the second terminals 124 are electrically connected to external wires.

Claims

1. A magnetic sensor assembly comprising:

a magnetic detection element having an electrode on a surface thereof; and

a base member on which the magnetic detection element is fixed, the base member comprising;

a first surface provided with a first terminal and a groove, wherein the magnetic detection element is fixed in the groove and the groove is formed to receive the magnetic detection element such that the first surface and the surface of the magnetic detection element having the electrode are substantially parallel and the surface of the magnetic detection element is substantially of the same height as the first surface of the base member when the magnetic detection element is in the groove; and

a second surface which is disposed at a predetermined angle to the first surface, wherein the second surface is provided with a second terminal electrically connected to the first terminal,

wherein the electrode of the magnetic detection element is electrically connected with the first terminal by wires.

2. A magnetic sensor assembly according to claim 1, wherein the first surface of the base member is angled substantially perpendicular to the second surface thereof.

3. A mobile terminal apparatus equipped with the magnetic sensor assembly according to claim 1.

4. A terrestrial magnetic detection device in which a plurality of magnetic detection elements each of which detects a terrestrial magnetism vector are provided on a substrate, the terrestrial magnetic detection device characterized in that at least one magnetic detection element includes an electrode on a surface thereof and is fixed to a base member to form a magnetic sensor assembly together with the base member, wherein the base member comprises:

a first surface provided with a first terminal and a groove, wherein the magnetic detection element is fixed in the groove and the groove is formed to receive the magnetic detection element such that the first surface and the surface of the magnetic detection element having the electrode are substantially parallel and the surface of the magnetic detection element is substantially of the same height as the first surface of the base member when the magnetic detection element is in the groove; and

a second surface which is disposed at a predetermined angle to the first surface, wherein the second surface is provided with a second terminal electrically connected to the first terminal,

wherein the electrode of the magnetic detection element is electrically connected to the first terminal by wires.

5. A terrestrial magnetic detection device according to claim 4, wherein the magnetic sensor assembly is fixed so that the second surface of the base member is substantially parallel to the substrate.

6. An element assembly comprising:

an element having an electrode on a surface thereof; and

a base member on which the element is fixed, the base member comprising;

a first surface provided with a first terminal and a groove, wherein the element is fixed in the groove and the groove is formed to receive the element such that the first surface and the surface of the element having the electrode are substantially parallel and the surface of the magnetic detection element is substantially of the same height as the first surface of the base member when the magnetic detection element is in the groove; and

a second surface which is disposed at a predetermined angle to the first surface, wherein the second surface is provided with a second terminal electrically connected to the first terminal,

wherein the electrode of the element is electrically connected to the first terminal by wires.