JP2003044819A - Recording medium and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize a space provided with antenna patterns also for other usages. SOLUTION: In the antenna patterns 12a and 12b provided to write and read information to/from a non-contact type IC card 10 in a non-contact state, image information 19 represented with a plurality of colors, such as a facial photograph is displayed by exposing a base material 15, cream color layers 21a and 21b and white color layers 22a and 22b by laser beams.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium in which information can be written and read in a non-contact state and a method for manufacturing the same, and more particularly to a non-contact type IC card of an electrostatic coupling system and a method for manufacturing the same.

[0002]

2. Description of the Related Art In recent years, with the development of an information-oriented society, information is recorded on a card, and information management and payment using the card are performed.

As a card used for such information management and settlement, a non-contact type IC card which can write and read information only by bringing it close to a dedicated device has recently been provided with high security. The amount of writable information is large, one card can be used for multiple purposes, and it has the advantage that it is convenient to handle, and therefore the degree of popularity in the market is increasing.

This non-contact type IC card is of an electromagnetic coupling type that utilizes mutual induction of coils by an alternating magnetic field, an electromagnetic induction type that utilizes induced power by the dielectric flux of two coils, and a microwave. Microwave type that transmits and receives data by using, and electrostatic coupling type that communicates by charging between the antenna of the information writing / reading device provided on the card side and the outside by the capacitor principle.
There is an optical system that uses near-infrared light to blink at high speed and uses energy modulation of light. Among such non-contact type IC cards, those of the electrostatic coupling type in which communication is performed by charging between the card side antenna and the external information writing / reading side antenna by the capacitor principle are used. The chip can be removed so that the available applications can be changed.

4A and 4B are views showing an example of the structure of a non-contact type IC card of the electrostatic coupling type, wherein FIG. 4A is a view showing the surface structure and FIG. 4B is a sectional view.

As shown in FIG. 4, in the conventional example, the antenna pattern 11 having conductivity is formed on the base material 115.
2a and 112b are formed with a predetermined distance from each other, and the IC chip 111 connected to the antenna patterns 112a and 112b via the contacts 116a and 116b is bonded so as to straddle the antenna patterns 112a and 112b. It is adhered in a peelable manner by the agent 114. Further, the surface opposite to the surface on which the antenna patterns 112a and 112b and the IC chip 111 are provided is an information printing surface 119, on which predetermined information regarding the owner and purpose of the non-contact type IC card 110 is printed. There is.

In the electrostatic coupling type non-contact type IC card 110 configured as described above, a capacitor is provided between the antenna patterns 112a and 112b and the antenna of an external information writing / reading device (not shown). Charging is caused in principle, and writing and reading of information with respect to the IC chip 111 are thereby performed.

A method of manufacturing the non-contact type IC card 110 having the above structure will be described below.

FIG. 5 is a flow chart for explaining a method of manufacturing the non-contact type IC card 110 shown in FIG.

First, the antenna patterns 112a and 112b having conductivity are formed on the base material 115 at a predetermined interval (step S101). The antenna patterns 112a and 112b are formed by metal etching or the like.

Next, the IC chip 111 is formed on the base material 115 so as to straddle the antenna patterns 112a and 112b.
Are mounted (step S102). The antenna patterns 112a and 112b and the IC chip 111 are releasably adhered by an adhesive 114 so as to be electrically connected to each other through the contacts 116a and 116b.

Next, the antenna patterns 112a, 112
Information printing surface 11 which is the surface opposite to the surface on which b is formed
Predetermined information on the owner and purpose of the non-contact type IC card 110 is printed on 9 (step S103).

Thereafter, predetermined information is electrically written into the IC chip 111 by an information writing / reading device (not shown) provided outside (step S104). When writing information to the IC chip 111, an antenna (not shown) provided in the information writing / reading device and the antenna patterns 112a and 112b are charged by the principle of a capacitor so that a current flows in the IC chip 111. Done by.

[0014]

In the conventional electrostatic induction type non-contact type IC card as described above, the area of the antenna pattern is one factor for determining the communicable distance, so that the communicable distance is extended. For this reason, the area of the antenna pattern must be increased. Therefore, when printing predetermined information on the non-contact type IC card, it is not on the surface on which the antenna pattern is formed, but on the part on which the antenna pattern is not formed. Information is printed.

Therefore, the space in which the antenna pattern is formed and the space in which the information is printed are required separately, and there is a problem that the layout of the card is restricted.

The present invention has been made in view of the problems of the above-described conventional technique, and provides a recording medium in which the space provided with the antenna pattern can be used for other purposes. The purpose is to do.

[0017]

In order to achieve the above object, the present invention provides an IC capable of writing and reading information.
A chip and a conductive antenna pattern formed on the base material on which the IC chip is mounted, the conductive antenna pattern having a predetermined area and being electrically connected to the IC chip. In a non-contact type IC card in which information is written to and read from the IC chip in a non-contact state, the non-contact type IC card is formed to have the same shape as the antenna pattern between the base material and the antenna pattern. A base material and a layer having a color different from that of the antenna pattern, and by exposing the base material and the layer in the antenna pattern, the color of the antenna pattern, the color of the base material, and the color of the layer It is characterized in that information represented by and is displayed.

Further, the layer is composed of a plurality of layers having different colors.

Further, the base material is exposed by removing the antenna pattern and the layer by laser light, and the layer is exposed by removing the antenna pattern by the laser light. Is characterized by.

The information is bar code information.

Further, the information is a facial photograph.

In the method of manufacturing the non-contact type IC card, the step of forming the layer on the base material, the step of forming the antenna pattern on the layer, and the step I
A step of electrically connecting the C chip to the antenna pattern and mounting it on the base material, a step of writing information to the IC chip, and a portion of the laser light for the antenna pattern based on the information. Is exposed to expose the base material and the layer in the portion.

Further, it is characterized in that whether the base material is exposed or the layer is exposed is selected by controlling emission energy of the laser light.

(Operation) In the present invention configured as described above, information is written to and read from the IC chip on the base material on which the IC chip capable of writing and reading information is mounted. A layer having the same shape as that of the antenna pattern and having a color different from that of the base material and the antenna pattern is formed, and the antenna pattern is formed on the layer. By exposing the base material or the layer in the antenna pattern, information represented by the color of the antenna pattern, the color of the base material, and the color of the layer is displayed. As a result, it becomes possible to display information expressed using a plurality of colors such as a facial photograph in the antenna pattern.

As described above, since the information expressed in a plurality of colors is displayed in the antenna pattern formed on the base material, predetermined information is displayed in addition to the antenna pattern functioning as an antenna. It is possible to effectively utilize the space provided with the antenna pattern.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of a recording medium of the present invention. (A) is a diagram showing a surface structure, (b) is a side view, and (c) is shown in (a). AA 'sectional view,
(D) is a BB 'sectional view shown in (a).

As shown in FIG. 1, in the present embodiment, a cream-colored cream-colored layer 21a is formed on a silver-colored base material 15 made of a sheet of paper or a plastic film.
21b, white layers 22a and 22b made of white, and antenna patterns 12a, 1 made of black and having conductivity.
2b and the same shape are sequentially laminated, and a cream layer 21a, a white layer 22a and an antenna pattern 12a are formed.
The cream-colored layer 21b, the white layer 22b, and the antenna pattern 12b are formed with a predetermined distance from each other. Further, the IC chips 11 respectively connected to the antenna patterns 12a and 12b via the contacts 16a and 16b are releasably adhered by an adhesive 14 so as to straddle the antenna patterns 12a and 12b. As described above, in this embodiment, a plurality of layers having different colors are provided under the antenna pattern of a general electrostatic coupling type non-contact type IC card. Furthermore, by removing any layer of the cream layers 21a and 21b, the white layers 22a and 22b, and the antenna patterns 12a and 12b by irradiating with laser light, the base material 12,
Cream layers 21a, 21b and white layers 22a, 22b
Is exposed, and as a result, image information 19 such as a facial photograph or a mark expressed by a plurality of colors, a user name 17 of the non-contact type IC card 10, and bar code information 18 for identifying the user. Is displayed inside it.

In the image information 19, as shown in FIG.
As shown in (d), by removing only the antenna pattern 12a, removing the antenna pattern 12a and the white layer 22a, or removing the antenna pattern 12a, the white layer 22a and the cream layer 21a, An image composed of a plurality of colors is represented. Antenna pattern 1
2a, the white layer 22a and the cream layer 21a are not removed, the black color of the antenna pattern 12a is expressed, and the white layer 22a is exposed and white is expressed in the part where only the antenna pattern 12a is removed. In the portion where the antenna pattern 12a and the white layer 22a are removed, the cream color layer 21a is exposed and a cream color is expressed, and in the portion where the antenna pattern 12a, the white layer 22a and the cream color layer 21a are removed, the base material is formed. 15 is exposed and silver color is expressed.

Further, in the user name 17, the antenna pattern 12b, the white layer 22b and the cream layer 21b.
By removing according to the shape of the user name 17,
The base material 15 is exposed in the shape of the user name 17, and the user name 17 is represented by the silver color of the base material 15.

In the bar code information 18, only the antenna pattern 12b is removed according to the shape of the bar code information 18, so that the bar code information 18 is obtained.
The white layer 22b is exposed in the shape of and the barcode information 18
Is represented by the black color of the antenna pattern 12b and the white color of the white layer 22b.

In the electrostatic coupling type non-contact type IC card 10 configured as described above, the antenna patterns 12a and 12b are provided when the information writing / reading device (not shown) provided outside is approached. Charging occurs due to the capacitor principle between the antenna and the antenna of the information writing / reading device, and information is written in and read from the IC chip 11.

A method of manufacturing the non-contact type IC card 10 having the above-mentioned structure will be described below.

FIG. 2 is a flow chart for explaining an example of a method of manufacturing the non-contact type IC card 10 shown in FIG. 1, and FIG. 3 is a non-contact type IC card in each step shown in FIG. It is a figure which shows the state of 10.

First, the cream color layers 21a and 21b are formed on the base material 15 by etching at predetermined intervals (step S1) (FIG. 3 (a)).

Next, white layers 22a and 22b are respectively formed on the cream color layers 21a and 21b formed on the base material 15 (step S2) (FIG. 3 (b)).

Next, conductive antenna patterns 12a and 12b are formed on the white layers 22a and 22b formed on the cream layers 21a and 21b (step S).
3) (FIG. 3 (c)).

Next, the IC chip 11 is mounted on the base material 15 so as to straddle the antenna patterns 12a and 12b (step S4) (FIG. 3 (d)). The antenna patterns 12a and 12b and the IC chip 11 are connected to each other by a contact point 16
It is releasably adhered by an adhesive 14 so as to be electrically connected to each other via a and 16b.

Next, predetermined information is electrically written to the IC chip 11 by an information writing / reading device (not shown) provided outside (step S5). In addition, IC
When writing information to the chip 11, the non-contact type IC card 10 is brought close to the information writing / reading device, and a capacitor is provided between an antenna (not shown) provided in the information writing / reading device and the antenna patterns 12a and 12b. It is carried out by charging in principle and flowing an electric current in the IC chip 11.

After that, the information written in the IC chip 11 is read, and the antenna patterns 12a and 12b are irradiated with laser light, whereby the antenna pattern 12 is formed.
The image information 19, the user name 17, and the barcode information 18 based on the information read from the IC chip 11 are formed in a and 12b (step S6) (FIG. 3 (e)).

Here, a method of forming the image information 19, the user name 17 and the bar code information 18 will be described in detail.

In the image information 19, the user name 17 and the bar code information 18, only the antenna patterns 12a and 12b are removed or the antenna patterns 12a and 12b are used.
And the white layers 22a and 22b are removed, or the antenna patterns 12a and 12b, the white layers 22a and 22b and the cream layers 21a and 21b are removed, and only the antenna patterns 12a and 12b are removed. Or the antenna patterns 12a and 12b and the white layers 22a and 22b are removed, or the antenna patterns 12a and 12b, the white layers 22a and 22b, and the cream layers 21a and 21b are removed. It depends on the emission energy of the laser light and the adjustment of the focus. If the removal depth of a layer is determined by the emission energy of the laser light, the larger the emission energy of the laser light, the deeper the layer can be removed, and the smaller the emission energy of the laser light, the shallower the layer can be removed. I can't. That is, when only the antenna patterns 12a and 12b are removed, the emission energy of the laser beam with which the antenna patterns 12a and 12b are irradiated is the smallest.
When removing a, 12b and white layers 22a, 22b,
Next, the antenna patterns 12a and 12b and the white layer 22
The emission energy of the laser light increases in the order of removing a, 22b and cream layers 21a, 21b.

Regarding the image information 19, it is necessary to change the layer removal depth by changing the layer removal depth according to the color forming the information. That is, by changing the emission energy of the laser beam with which the antenna pattern 12a is irradiated, the removal depth of the layer is changed to change the layer to be removed, and thereby the color forming the information is expressed. In a portion where none of the antenna pattern 12a, the white layer 22a and the cream layer 21a is removed, the antenna pattern 12
The black color of a is expressed, and the white layer 22a is exposed and white is expressed in the portion where only the antenna pattern 12a is removed. A cream color is exposed and the base material 15 is exposed in a portion where the antenna pattern 12a, the white layer 22a, and the cream layer 21a are removed, and a silver color is expressed. Information 19 is represented.

Since the user name 17 is expressed in silver, the removal depth of the layer corresponds to the antenna pattern 12b.
To the cream color layer 21b is irradiated with laser light so that the user name 17 is written on the antenna pattern 12b. Then, the antenna pattern 12b, the white layer 22b, and the cream-colored layer 21b in the portion irradiated with the laser beam are removed by sublimation, whereby the base material 15 is exposed in the shape of the user name 17, and the user name 17 becomes Is displayed in silver.

Further, since the bar code information 18 is represented by black and white, the white portion is irradiated with laser light with emission energy such that the layer removal depth is only the antenna pattern 12b. To do. Then,
The antenna pattern 12b in the portion irradiated with the laser light is removed by sublimation, whereby the barcode information 18 is displayed in black of the antenna pattern 12b and white of the white layer 22b.

The non-contact type IC card 10 thus manufactured has desired image information 19 and user name in the antenna patterns 12a and 12b for writing and reading information in a non-contact state. 17, ID number 1
Since 8 is displayed, the antenna patterns 12a and 12b
In addition to functioning as an antenna, displays predetermined information, so that the space provided with the antenna pattern can be effectively used. In addition, this information can be expressed using a plurality of colors.

In this embodiment, the IC chip 11 is mounted on the base material 15, and predetermined information is written in the IC chip 11, and then the image information 19, the user name 17 and the bar code are written in the antenna patterns 12a and 12b. Information 18
The image information 19, the user name 17, and the barcode information 18 are formed in the antenna patterns 12a and 12b.
It is also conceivable to mount the IC chip 11 and write predetermined information on the IC chip 11 after forming the.

In this embodiment, two layers, cream layers 21a and 21b and white layers 22a and 22b, are formed between the base material 15 and the antenna patterns 12a and 12b, but one layer is formed. Even if only the antenna patterns 12a and 12b are removed, the antenna patterns 12a and 12b and the layers thereof are removed, and the antenna patterns 12a and 12b and the layers thereof are not removed. The information consisting of can be displayed.

Further, the base material 15 and the antenna pattern 1
If the layers formed between 2a and 12b are layers having cyan, magenta, yellow, and white, respectively, by combining these with the black of the antenna patterns 12a and 12b, all colors can be expressed. It will be possible.

In the present embodiment, a non-contact type IC card has been described as an example of a recording medium in which information can be written and read in a non-contact state, but the present invention is not limited to this, and the present invention is not limited to this. The present invention can be applied to an IC label that can be attached to such a curved surface, an IC tag such as a key chain, and the like as long as information can be written and read in a non-contact state.

[0051]

As described above, in the present invention,
A base material on which an IC chip capable of writing and reading information has the same shape as an antenna pattern for writing and reading information to and from the IC chip, and is different from the base material and the antenna pattern. A layer having a color is formed, an antenna pattern is formed on the layer, and further, in the antenna pattern,
The information formed by the color of the antenna pattern, the color of the base material, and the color of the layer is displayed by exposing the base material or the layer, so that the antenna formed on the base material is displayed. Information expressed using a plurality of colors such as a facial photograph can be displayed in the pattern, and the space provided with the antenna pattern can be effectively used.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a recording medium of the present invention, (a) showing a surface structure, (b) a side view,
(C) is an AA 'sectional view shown in (a), (d) is a BB' sectional view shown in (a).

2 is a flowchart for explaining an example of a method for manufacturing the non-contact type IC card shown in FIG.

FIG. 3 is a diagram showing a state of the non-contact type IC card in each step shown in FIG.

4A and 4B are diagrams showing an example of a structure of a non-contact type IC card of an electrostatic coupling system, FIG. 4A is a view showing a surface structure, and FIG.
Is a sectional view.

5 is a flow chart for explaining a method of manufacturing the non-contact type IC card shown in FIG.

[Explanation of symbols]

10 Non-contact type IC card 11 IC chip 12a, 12b antenna pattern 14 Adhesive 15 Base material 16a, 16b contact 17 User name 18 Barcode information 19 Image information 21a, 21b cream color layer 22a, 22b white layer

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2C005 MB03 MB08 NA10 NB03 PA02                       PA21 RA10 RA22 TA22                 5B035 BA03 BA05 BB01 BB09 CA01                       CA06 CA23                 5B072 BB00 CC24

Claims (7)

[Claims] 1. An I capable of writing and reading information
A C chip and a conductive antenna pattern formed on the base material on which the IC chip is mounted, the conductive antenna pattern having a predetermined area and being electrically connected to the IC chip. In a recording medium in which information is written to and read from the IC chip in a non-contact state, the substrate is formed to have the same shape as the antenna pattern between the substrate and the antenna pattern. And a layer having a color different from that of the antenna pattern, and by exposing the base material and the layer in the antenna pattern, the color of the antenna pattern, the color of the base material and the color of the layer A recording medium on which information to be expressed is displayed. 2. The recording medium according to claim 1, wherein the layer is composed of a plurality of layers having mutually different colors. 3. The recording medium according to claim 1, wherein the base material is exposed by removing the antenna pattern and the layer by laser light, and the layer is exposed by the laser light in the antenna pattern. A recording medium that is exposed by being removed. 4. The recording medium according to claim 1, wherein the information is bar code information. 5. The recording medium according to claim 1, wherein the information is a facial photograph. 6. The method of manufacturing a recording medium according to claim 3, wherein the step of forming the layer on the base material, the step of forming the antenna pattern on the layer, and the IC chip A step of electrically connecting to the antenna pattern and mounting on the base material; a step of writing information to the IC chip; and a step of irradiating the antenna pattern with the laser light on a portion based on the information. Thereby exposing the base material and the layer in the portion. 7. The method of manufacturing a recording medium according to claim 6, wherein the emission energy of the laser beam is controlled to select whether the base material is exposed or the layer is exposed. Recording medium manufacturing method.