JP2514318B2 - IC card - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] The present invention relates to a structure of an IC card provided with an anti-static measure, which is provided inside a card so that an electrode terminal is not directly touched by a person's finger from the outside.

[Industrial applications]

The present invention relates to an IC card, and more particularly to the structure of an IC card provided with a measure against static electricity in order to protect the IC.

[Conventional technology]

The IC card shown in FIG. 4 is a known one. In the figure, 21 is an IC card body, 22 is an electrode terminal, and 23 is an IC.
It is a chip, and the electrode terminals 22 and pads (electrodes) of the IC chip 23 are connected by wires. Conventional magnetic cards have a limited recording capacity, but IC cards are capable of recording and reading information, have a large recording capacity, and are excellent in safety and information storability. It has advantages such as rewriting.

[Problems to be solved by the invention]

The only weak point of the above-mentioned IC card is that the electrode terminals are exposed on the surface of the card, so that static electricity may destroy the IC when a human finger directly touches the electrode terminals.

The present invention was created in view of the above circumstances, and an object thereof is to provide an IC card having a mechanism for preventing damage to the IC due to static electricity.

[Means for solving problems]

The above problem is that the chip is mounted on one main surface, and
A module substrate having electrode terminals arranged on the main surface at a distance from one end edge portion at one end, the electrodes of the chip and the electrode terminals are electrically connected, and the module substrate is Provided is an IC card characterized in that an electrode terminal is housed in a recess having an opening whose width is smaller than the thickness of a card base, and is arranged away from an edge of a connection end of the card base to an external device. Will be solved.

[Action]

The attached drawings show an embodiment of the present invention, in which FIG. 1 is a partially cutaway perspective view of the same embodiment, FIG. 2 is a front view, and FIG. 3 is a plane in which the front surface and the back surface of FIG. 2 are reversed. In these figures, 11 is a card main body, 11a is a front surface, 11b is a back surface, 12 is a module, which includes a semiconductor chip 13, and pads of the semiconductor chip are connected to electrode terminals 16 by wires 15.

In the embodiment of the present invention, the semiconductor chip 13, the electrode terminal 1
The module 12 including the wire 15 and the wire 15 is disposed in a recess provided in the card body 11.

In the above-described embodiments of the present invention, since the electrode terminals are completely shielded from the outside, it is possible to avoid the influence of static electricity without being touched by human fingers.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the embodiment of the present invention, for example, a semiconductor chip 13 on which an integrated circuit is formed is adhered on an insulating module substrate 17 made by laminating glass fibers, and a semiconductor chip pad 14 is provided on the module substrate 17. One module 12 is made by connecting wires 15 to a group of electrode terminals 16 spaced apart from the edge 17a. The module board 17 can be made of an insulating material other than those described above.

The module 12 is attached to the front surface 11a so that the semiconductor chip 13 faces upward and the module board edge portion 17a coincides with the edge portion of the card body. create. As shown in FIG. 1, the thickness of the module substrate 17 is set to 0.5 mm, the thickness of the back surface 11b is set to 0.5 mm, and the plug-like electrode of the IC card reader / writer that contacts the electrode terminal 16 is inserted. 1mm height recess 1
8 was formed, and the entire IC card had a thickness of 2 mm. The height of the recess 18 is 1 mm as described above, and since the electrode terminal is separated from the module board edge portion 17a, it is completely prevented that a human finger enters there and comes into contact with the electrode terminal 16. . I c
The card body 11 is made of, for example, ABS resin, but the material is not limited thereto. Further, the electrode terminal 16 can be formed on the module substrate 17 by a normal printing technique, but it can also be formed by another technique such as etching.

〔The invention's effect〕

As described above, according to the present invention, since the electrode terminals of the IC card are completely placed in the recess of the card body and shielded from the outside, there is no risk of touching a human finger and destroying the IC by static electricity. , It is effective for improving the usage and reliability of IC cards.

[Brief description of drawings]

FIG. 1 is a perspective view of the embodiment of the present invention viewed downward, FIG. 2 is a front view of the embodiment of the present invention viewed downward, and FIG. 3 is a surface of the embodiment of the present invention viewed upward. 4 is a plan view of the conventional IC card. 11 is a card body, 11a is a front surface, 11b is a back surface, 12 is a module, 13 is a semiconductor chip, 14 is a pad, 15 is a wire, 16 is an electrode terminal, 17 is a module substrate, and 18 is a recess.

Claims (1)

(57) [Claims] 1. A module substrate having a chip mounted on one main surface, and an electrode terminal disposed on the main surface at one end apart from an edge portion at one end, the electrode of the chip and the electrode The module substrate is electrically connected to the terminal, the electrode terminal is housed in a recess having a smaller opening width than the thickness of the card base, and the connection edge of the card base to an external device is connected. IC card characterized by being placed away from the department.