IC card and method of manufacturing the same
First Claim
1. An IC card comprising:
- a semiconductor device having a semiconductor chip at least partially sealed with a first sealing portion made of a thermosetting resin material and mounted over a front surface of a wiring substrate, and having, over a rear surface of the wiring substrate, an external connection terminal electrically connected to the semiconductor chip;
a case, covering the first sealing portion and the front surface of the wiring substrate, which is made of a thermoplastic resin material and to which the semiconductor device is loaded; and
a second sealing portion which is made of a thermoplastic resin material bonded to the case, the second sealing portion covering the rear surface of the wiring substrate so as to seal the semiconductor device and expose the external connection terminal, thereby integrating the semiconductor device with the case.
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0 Petitions
Accused Products
Abstract
An IC body is loaded on a case made of a thermoplastic resin material and sealed to the case with a sealing portion made of thermoplastic resin material, whereby an IC card is manufactured. The IC body includes a wiring substrate formed with an external connection terminal at a back surface thereof, a semiconductor chip loaded over a surface of the wiring substrate and electrically connected to the external connection terminal via an interconnect, and a sealing portion made of thermoplastic resin material so as to cover the semiconductor chip and a bonding wire. The sealing portion is formed so that the external connection terminal is exposed. Thus, making it possible to increase the strength of IC cards and, at the same time, to reduce the manufacturing cost and improve the reliability.
35 Citations
38 Claims
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1. An IC card comprising:
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a semiconductor device having a semiconductor chip at least partially sealed with a first sealing portion made of a thermosetting resin material and mounted over a front surface of a wiring substrate, and having, over a rear surface of the wiring substrate, an external connection terminal electrically connected to the semiconductor chip; a case, covering the first sealing portion and the front surface of the wiring substrate, which is made of a thermoplastic resin material and to which the semiconductor device is loaded; and a second sealing portion which is made of a thermoplastic resin material bonded to the case, the second sealing portion covering the rear surface of the wiring substrate so as to seal the semiconductor device and expose the external connection terminal, thereby integrating the semiconductor device with the case. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An IC card comprising:
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a substrate having a front surface and a rear surface; a semiconductor chip mounted over the front surface of the substrate; a first sealing portion formed of a thermosetting resin material and covering the semiconductor chip and a portion of the front surface adjacent to the semiconductor chip; a plurality of external connection terminals arranged over the rear surface of the substrate; a second sealing portion formed of a thermoplastic resin material and covering the rear surface of the substrate such that the plurality of external connection terminals are exposed; and
a case covering the first sealing portion and formed of a thermoplastic resin to which the second sealing portion adheres. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. An IC card comprising:
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an IC body having a front surface and a rear surface, the IC body including a substrate, a semiconductor chip, a plurality of external connection terminals and a first sealing portion formed of a first material and covering the semiconductor chip and a portion of the front surface adjacent to the semiconductor chip; a second sealing portion covering the rear surface of the IC body such that the plurality of external connection terminals are exposed, the second sealing portion being formed of a second material different from the first material; and a case receiving the IC body and formed of the second material, and to which the second sealing portion is welded. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. An IC card comprising:
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a substrate having a front surface and a rear surface; a semiconductor chip mounted over the front surface of the substrate; a first sealing portion formed of a first material and covering the semiconductor chip and a portion of the front surface adjacent to the semiconductor chip; a plurality of external connection terminals arranged over the rear surface of the substrate; a second sealing portion formed of a material different from the first material and having a first portion and a second portion, wherein the first portion covers the rear surface of the substrate such that the plurality of external connection terminals are exposed; and a case formed of the second material and having a first portion and a second portion, wherein the first portion of the case covers the first sealing portion, and the second portion of the case is formed integrally with the second portion of the second sealing portion. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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Specification