JP2000215289A - Non-contact ic card and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact IC card which can more easily be manufactured compared with a former one and which is superior in productivity and to provide a manufacture method thereof. SOLUTION: In the non-contact IC card, an electronic circuit part 2 on which at least an IC chip is mounted and an antenna coil 3 connected to the electronic circuit part 2 are formed on a substrate 1. The electronic circuit part 2 is arranged to straddle the inner peripheral side end part of the antenna coil 3 and the outer peripheral side end part of the antenna coil 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact IC card in which at least an electronic circuit section on which an IC chip is mounted and an antenna coil connected to the electronic circuit section are formed on a base material.

[0002]

2. Description of the Related Art Conventionally, an IC on which an IC chip is mounted
As a card, a so-called non-contact IC card, which transmits and receives information to and from a terminal device in a non-contact manner, has attracted attention.
Since the non-contact IC card transmits and receives information in a non-contact state with the terminal device, it is possible to avoid inconveniences such as contamination and damage of terminal portions of the IC chip, and the demand for the non-contact IC card is rapidly increasing.

Specifically, in this non-contact IC card, transmission and reception of information to and from a terminal device is performed using radio waves as a medium. That is, in this contactless IC card, information is superimposed on radio waves,
Information is exchanged with the terminal device. For this reason,
The non-contact IC card has an antenna coil for receiving radio waves.

As shown in FIG. 3, such a conventional non-contact IC card has an antenna coil 100 formed by etching a copper foil constituting a so-called copper-clad laminate into a coil shape.
And an electronic circuit unit 101 connected to an inner peripheral end 100a and an outer peripheral end 100b of the antenna coil 100. In this non-contact IC card, the electronic circuit unit 101 includes the antenna coil 1
The antenna coil is mounted in a region of the outer peripheral side where no coil is formed, and is connected to the inner peripheral end 100a and the outer peripheral end 100b of the antenna coil.

At this time, in the conventional non-contact IC card,
The inner peripheral end portion 100 is set so as to cross the antenna coil 100.
A lead wire 102 was formed from a, and this lead wire 102 was connected to the electronic circuit unit 101. Therefore, in this non-contact IC card, an insulating layer 103 is formed in a predetermined area of the antenna coil 100 so that the lead wire 102 and the antenna coil 100 are not short-circuited, and the lead wire 102 is formed on the insulating layer 103. Had formed.

[0006]

However, in the conventional non-contact IC card as described above, it is necessary to form the insulating layer 103 in a predetermined region of the antenna coil 100 after etching the copper clad laminate. There is a problem that the manufacturing process is complicated. Further, by forming the electronic circuit portion 101 on the surface opposite to the surface on which the antenna coil 100 is formed, a method may be considered in which the insulating layer 103 does not need to be formed. Another problem arises in that a through hole must be formed in the hole.

Therefore, the present invention has been made in view of the above-mentioned problems, and can be manufactured very easily as compared with the related art, and has excellent productivity and a non-contact IC card, and a method of manufacturing the same. The purpose is to provide.

[0008]

A non-contact IC card according to the present invention, which has solved the above-mentioned problems, comprises at least an electronic circuit section on which an IC chip is mounted and an antenna coil connected to the electronic circuit section. A non-contact IC card formed on a material, wherein the electronic circuit portion is disposed so as to straddle between an inner peripheral end of the antenna coil and an outer peripheral end of the antenna coil. It is characterized by the following.

[0009] The non-contact IC card configured as described above is formed so that the electronic circuit section straddles a predetermined area of the antenna coil. In this non-contact IC card, the inner peripheral end of the antenna coil is directly connected to the electronic circuit unit, and the outer peripheral end of the antenna coil is directly connected to the electronic circuit unit. For this reason, in this non-contact IC card, since the inner peripheral end and the outer peripheral end of the antenna coil are connected to the electronic circuit, it is not necessary to form a lead electrode or the like on the antenna coil.

A method for manufacturing a non-contact IC card according to the present invention, which solves the above-described problems, forms an antenna coil made of a conductor on a base material, and forms an electronic circuit portion so as to be connected to the antenna coil. A method for manufacturing a non-contact IC card to be formed, wherein the electronic circuit portion is disposed so as to straddle the antenna coil, and an inner peripheral end of the antenna coil is directly connected to the electronic circuit portion. An outer peripheral end portion of the antenna coil is directly connected to the electronic circuit portion.

According to the method of manufacturing a non-contact IC card according to the present invention having the above-described configuration, the electronic circuit portion is disposed so as to straddle the antenna coil. The side ends can be directly connected to the electronic circuit section. For this reason, according to this method, it is not necessary to form an extraction electrode or the like across the antenna coil.
The electronic circuit can be arranged very easily.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a non-contact IC card and a method for manufacturing the same according to the present invention will be described below in detail with reference to the drawings.

The contactless IC card shown in this embodiment is
As shown in FIGS. 1 and 2, a substrate 1 formed in a substantially rectangular shape
The electronic circuit unit 2 includes an electronic circuit unit 2 disposed thereon and an antenna coil 3 formed on the base material 1 and electrically connected to the electronic circuit unit 2 to transmit and receive information signals. In particular, in this non-contact IC card, the electronic circuit unit 2 is provided so as to straddle a predetermined area of the antenna coil 3.

In this non-contact IC card, the antenna coil 3 is formed, for example, by etching a copper foil formed on a flexible film into a predetermined shape. At this time, the antenna coil 3 is
It is preferable that the inner peripheral end 3b be located closest to the inner peripheral end 3b. Then, the electronic circuit section 2 is electrically connected to the antenna coil 3.

The electronic circuit section 2 has, for example, an IC chip and a capacitor, and forms a predetermined electronic circuit. The electronic circuit exchanges information with a terminal device (not shown) installed outside. At this time, this non-contact IC card uses radio waves as a medium for transmitting and receiving information, and receives and / or transmits radio waves via the above-described antenna coil 3.

In this non-contact IC card, the electronic circuit section 2 is disposed so as to straddle the antenna coil 3 formed as described above. Thereby, the electronic circuit unit 2
The pair of terminals faces the region surrounded by the antenna coil 3 and the region outside the antenna coil 3.

The pair of terminals of the electronic circuit section 2 are connected to the outer peripheral end 3b and the inner peripheral end 3a of the antenna coil 3 by soldering or the like. As a result, the electronic circuit unit 2 is connected to the antenna coil 3, and receives and / or receives radio waves from / to a terminal device provided outside.
Or a call can be made.

Incidentally, in the non-contact IC card as described above, an insulating layer may be provided between the electronic circuit section 2 and the antenna coil 3. That is, before disposing the electronic circuit section 2 in a predetermined area of the antenna coil 3, a predetermined area of the antenna coil 3 is covered with an insulating layer, and then the electronic circuit section 2 is disposed on the insulating layer. May be set. In this case, the antenna coil 3 and the electronic circuit unit 2 are affected by a distance corresponding to the thickness of the insulating layer. For this reason, since the influence of the magnetic field and the like caused by the current flowing through the antenna coil 3 is reduced, the electronic circuit unit 3 is not adversely affected by the magnetic field and the like. Therefore, in this case, the non-contact IC card can more reliably receive and / or transmit radio waves.

In the above-described non-contact IC card, as described above, after the antenna coil 3 is formed in a predetermined shape, the antenna coil 3 and the electronic circuit section 2 can be very easily connected. . That is, this non-contact I
In the C card, it is not necessary to form an extraction electrode so as to straddle the antenna coil 3 from the inner peripheral end 3b of the antenna coil 3. Therefore, according to the method described above, the outer peripheral end 3a and the inner peripheral end 3b of the antenna coil 3 are
It can be easily connected to the electronic circuit section 2.
Therefore, this method can manufacture a non-contact IC card with high productivity.

[0020]

As described above in detail, in the non-contact IC card and the method for manufacturing the same according to the present invention, the electronic circuit is provided so as to straddle a predetermined area of the antenna coil. The connection between the unit and the antenna coil is made easy. For this reason, the non-contact IC card and the method for manufacturing the same greatly improve the productivity.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a non-contact IC card according to the present invention.

FIG. 2 is a perspective view of a non-contact IC card.

FIG. 3 is a plan view of a conventional non-contact IC card.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2 Electronic circuit part 3 Antenna coil

Claims (3)

[Claims] 1. A non-contact IC card in which at least an electronic circuit unit on which an IC chip is mounted and an antenna coil connected to the electronic circuit unit are formed on a base material, wherein the electronic circuit unit comprises: A non-contact IC card provided so as to straddle between an inner peripheral end of the antenna coil and an outer peripheral end of the antenna coil. 2. The non-contact IC card according to claim 1, wherein an insulating layer is formed between the electronic circuit section and a region over which the electronic circuit section straddles. 3. A method for manufacturing a non-contact IC card in which an antenna coil made of a conductor is formed on a base material and an electronic circuit portion is formed so as to be connected to the antenna coil. The electronic circuit unit is directly connected to an inner peripheral end of the antenna coil and the electronic circuit unit is directly connected to an outer peripheral end of the antenna coil. Non-contact IC
Card manufacturing method.