Magnetic sensor and method for fabricating the same
First Claim
Patent Images
1. A magnetic sensor comprising:
- a magnetic sensor chip;
a chip mounting member on which the magnetic sensor chip is mounted;
an adhesive material for bonding the magnetic sensor chip to the chip mounting member;
an encapsulating material for encapsulating the magnetic sensor chip; and
a magnetic-field generating portion formed by magnetizing at least one of the chip mounting member, the adhesive material, and the encapsulating material.
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Accused Products
Abstract
The magnetic sensor is fabricated such that a magnetic sensor chip, having a one-chip structure in which MRE bridges and a comparator are included, is mounted onto a lead frame using an adhesive material, and then the magnetic sensor chip mounted on the lead frame is encapsulated by molding in a molded material. The magnetic sensor includes a magnetic-field generating portion formed by magnetizing at least one of the chip mounting member, the adhesive material, and the encapsulating material.
74 Citations
14 Claims
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1. A magnetic sensor comprising:
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a magnetic sensor chip;
a chip mounting member on which the magnetic sensor chip is mounted;
an adhesive material for bonding the magnetic sensor chip to the chip mounting member;
an encapsulating material for encapsulating the magnetic sensor chip; and
a magnetic-field generating portion formed by magnetizing at least one of the chip mounting member, the adhesive material, and the encapsulating material. - View Dependent Claims (2, 3, 4, 5)
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6. A magnetic sensor comprising:
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a magnetic sensor chip;
a chip mounting member, for mounting the magnetic sensor chip thereon, with a magnetized portion on which the magnetic sensor chip is mounted;
a magnetized adhesive material for boding the magnetic sensor chip to the chip mounting member; and
an encapsulating material for encapsulating the magnetic sensor chip therein, the encapsulating material having a magnetized portion on a surface opposite to the mounting surface of the magnetic sensor chip on the chip mounting member, the magnetized portion of the encapsulating material corresponding to the magnetized portion of the chip mounting member.
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7. A method for fabricating a magnetic sensor comprising:
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mounting a magnetic sensor chip on a chip mounting member by using an adhesive material for bonding;
encapsulating the chip mounting member and the magnetic sensor chip mounted thereon by using an encapsulating material; and
forming a magnetic-field generating portion by magnetizing at least one of the chip mounting member, the adhesive material, and the encapsulating material. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for fabricating a magnetic sensor comprising:
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magnetizing a portion of a chip mounting member on which a magnetic sensor chip is mounted;
magnetizing an adhesive material for bonding the magnetic sensor chip to the chip mounting member;
mounting the magnetic sensor chip on the chip mounting member by using the adhesive material;
encapsulating the chip mounting member and the magnetic sensor chip mounted thereon by using an encapsulating material; and
magnetizing a portion of the encapsulating material on a surface opposite to the mounting surface of the magnetic sensor chip on the chip mounting member, the portion of the encapsulating material corresponding to the magnetized portion of the chip mounting member. - View Dependent Claims (14)
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Specification