JP2000137783A - Card type electronic circuit board and input and output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a card type electronic circuit board which makes it easy to decide the function of the card is damaged or greatly changed when external stress or environmental stress due to excessive temperature, humidity, or an electromagnetic wave is applied to the card type electronic circuit board. SOLUTION: This board 100 has a conductor film 20 formed on the top surface of a filmy circuit base material, a semiconductor IC chip 30 connected to the conductor film 20, and films 80 (80A, 80B) which are laminated across the conductor film 20 and semiconductor IC chip 30. Further, this board 100 is equipped with environmental stress strength sense display parts 40 (40A, 40B) which sense environmental stress that the semiconductor IC chip 30 receives and make a display corresponding to the strength of the environmental stress.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card-type electronic circuit board and an input / output device, and more particularly to a card-type electronic circuit board containing a semiconductor IC chip and an input / output device used for the card-type electronic circuit board.

[0002]

2. Description of the Related Art In recent years, card-type electronic circuit boards incorporating semiconductor IC chips, so-called IC cards, have been researched and developed. A card-type electronic circuit board with a built-in semiconductor IC chip is a semiconductor substrate such as a memory, a microcomputer, or a wireless communication device on a circuit base made of an organic polymer film.
It is equipped with a C chip, and its memory capacity is much larger than that of magnetic tape, and it has been widely used as a portable recording medium capable of recording or exchanging various kinds of information used as credit cards and cash cards. It is getting.

Conventionally used credit cards and cash cards have a structure in which a magnetic tape is affixed to the card base material. Functional reliability was not greatly impaired.

On the other hand, a card-type electronic circuit board with a built-in semiconductor IC chip, which is currently in widespread use, has the same size as a conventional magnetic tape-attached card, for example, 85.6 in the vertical direction.
It is a rectangle having a width of 54 mm and a width of 54 mm. Its thickness is
A 0.75 mm one that is equivalent to a conventional magnetic tape-attached card and a 0.25 mm one that is even thinner have been developed.

[0005] Such a thin card-type electronic circuit board,
In general, it has a structure in which a semiconductor IC chip for a memory, a microcomputer, or wireless communication is mounted on a circuit base made of an organic polymer film.

[0006]

However, when the thickness of the card-type electronic circuit board with a built-in semiconductor IC chip is reduced, the semiconductor IC chip is subjected to mechanical forces such as bending and twisting during handling and carrying. In such a case, there is a problem in that the card may be broken and the function of the card may be greatly impaired.

[0007] In addition, excessive temperature or humidity that impairs the electronic circuit function of the semiconductor IC chip, or environmental stress due to electromagnetic waves such as X-rays, ultraviolet rays, and alpha rays, impairs the function of the card. Even if there is a possibility that the function has been changed, there is a problem that it is not possible to read from the appearance of the card type electronic circuit board that the function of the card is damaged or changed.

An object of the present invention is to determine whether an external stress, an environmental stress due to excessive temperature, humidity, electromagnetic waves, or the like is applied to a card-type electronic circuit board, and that the function of the card is damaged or changed. To provide a card-type electronic circuit board that can easily perform the above.

Another object of the present invention is to provide a card type electronic circuit board in which abnormalities are predicted even when the card type electronic circuit board subjected to excessive environmental stress is inserted into an input / output device. An object of the present invention is to provide an input / output device capable of stopping transfer of card information.

[0010]

(1) In order to achieve the above object, the present invention provides a conductive film formed on the surface of a film-like circuit substrate, and a semiconductor IC connected to the conductive film.
In a card-type electronic circuit board having a chip and a film laminated with the conductive film and the semiconductor IC chip interposed therebetween, in response to an environmental stress applied to the semiconductor IC chip, a display corresponding to the intensity of the environmental stress is displayed. An environmental stress intensity sensitive display unit is provided. With this configuration, even when external environmental stress is applied to the card-type electronic circuit board by the environmental stress intensity sensitive display unit and the function of the card is damaged or changed, it is possible to easily determine these functions. Become.

(2) According to another aspect of the present invention, there is provided an input / output device for inputting / outputting information to / from a card-type electronic circuit board having a built-in semiconductor IC. An environmental intensity display reading unit that reads an environmental stress display from an environmental stress intensity sensitive display unit that performs display according to the intensity of the environmental stress in response to environmental stress received by the semiconductor IC chip provided in the semiconductor device;
When the environmental stress read by the environmental strength display reading unit is high, a control unit for stopping input / output of information to / from the card-type electronic circuit board is provided. With this configuration, even when the card-type electronic circuit board subjected to excessive environmental stress is inserted into the input / output device, the environmental strength display reading unit detects that the abnormality of the card-type electronic circuit board is predicted. The control unit can stop the transfer of the card information in an abnormal state.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of a card-type electronic circuit board and an input / output device according to an embodiment of the present invention will be described below with reference to FIGS. First, the overall configuration of the card-type electronic circuit board according to the present embodiment will be described with reference to FIG. FIG. 1 shows a cross-sectional configuration of a card-type electronic circuit board according to an embodiment.

The card type electronic circuit board 1 according to the present embodiment.
00 is a rectangle having a size equivalent to that of a conventional magnetic tape pasting card, for example, a rectangle having a length of 85.6 mm and a width of 54 mm. Its thickness is 0.5 mm, which is thinner than a conventional magnetic tape pasting card.

The circuit substrate 10 is made of a polymer organic film such as polyethylene terephthalate. A conductive film 20 made of silver powder and a thermosetting resin is formed on both surfaces of the circuit substrate 10. The conductive film 20 includes an antenna coil portion 20A, a connection terminal 20B, a wiring portion 20C, a conductive material 20D, and the like. The antenna coil section 20A has a coil-shaped planar shape, and is used for transmitting and receiving data and electric power by radio waves to and from an input / output device described later. The connection terminal 20B is used for electrical connection with the semiconductor IC chip 30 installed on the upper part thereof. The wiring section 20C is composed of the antenna coil section 20A and the connection terminal 20.
Used to connect to B. The conductive material 20D is formed on the antenna coil portions 20A formed on both sides of the circuit substrate 10.
Is filled in the through holes formed in the circuit substrate 10. The conductive film 20 is formed on both surfaces of the circuit substrate 10 by screen printing or the like.

The connection terminals of the semiconductor IC chip 30 are joined to the connection terminals 20B formed on the substrate surface by the anisotropic conductive adhesive 50. Then, a thermoplastic film spacer material is laminated on the circuit board as the intermediate resin material 60, the semiconductor IC chip 30 is embedded in the intermediate resin material 60, and the surface thereof is flattened. Furthermore, the environment-sensitive functional films 40A and 40B are attached to both sides of the embedded portion of the semiconductor IC chip 15. Further, the film material 80A, 80B is adhered to the back surface and the front surface of the circuit board by the adhesive 7.
OA and 70B. A picture is printed and formed on the film materials 80A and 80B on the front and back surfaces as necessary. As the film material 80, for example, an organic polymer film is used. As the adhesive 70, for example, hot melt is used.

Here, as the environment-sensitive functional films 40A and 40B, pressure-sensitive films (for example, from white to red) depending on the intensity level of the pressure applied to the environment-sensitive functional films (for example,
Fujifilm prescale paper). The intensity level at which the color develops under pressure is obtained by determining in advance the strength at which the semiconductor IC chip is mechanically destroyed by the pressure received by a pressure test of the card-type electronic circuit board, and the pressure at which the color develops when the pressure of the intensity is received. A sensitive membrane is selected.

For example, when the circuit board 100 is greatly bent while the card-type electronic circuit board is being carried, or when pressure is applied to the surface of the circuit board such that the semiconductor IC chip is broken, or when the ball-point pen tip is used. When the card-type electronic circuit board receives an excessive pressure, such as when a point load force is applied to the semiconductor IC chip, the environment-sensitive functional films 40A and 40B are colored to indicate the level of the environmental stress. Things. When an excessive pressure is applied, the environment-sensitive functional films 40A and 40B are colored, the semiconductor IC chip is destroyed, and the card function may be destroyed. become.

Thus, the card type electronic circuit board 100
Will be able to recognize from the appearance that the function of the card-type electronic circuit board as a card may be damaged. Therefore, prompt correspondence with the issuer of the card-type electronic circuit board can be taken, a detailed check of the card function with the record information stored by the issuer is received, and if the card function is damaged or changed, a new A card-type electronic circuit board can be issued.

As the environment-sensitive functional films 40A and 40B, in addition to the pressure-sensitive films, temperature, humidity, X-rays, ultraviolet rays or the like which deviate from the use environment conditions of the card type electronic circuit board which guarantees the card function. A sensitive film that develops or changes color in response to environmental stresses such as electromagnetic waves such as alpha rays can be used.

The environment-sensitive functional films 40A and 40B are
Although provided on both surfaces of the semiconductor IC chip 30, it may be provided on only one surface. In this case, by providing only the environment-sensitive functional film 40B on the upper surface of the semiconductor IC chip 30, environmental stress applied to the semiconductor IC chip 30 can be effectively detected.

Next, the functional configuration of the card-type electronic circuit board and the input / output device will be described with reference to FIG. The same reference numerals as those in FIG. 1 indicate the same parts.

The card-type electronic circuit board 100 with a built-in semiconductor IC chip includes the semiconductor IC chip 3 described in FIG.
0, an antenna coil 20A, and an environmental stress intensity sensitive display unit 40. Here, as described in FIG. 1, the environmental stress intensity sensitive display unit 40 is constituted by the environmentally sensitive functional films 40A and 40B, and develops or changes color in response to the environmental stress. It indicates that the IC chip 30 has been hit.

The IC chip 30 includes therein a transmission / reception circuit 32, an arithmetic processing unit 34, and an information recording unit 36. The transmitting / receiving circuit 32 includes the antenna coil 20
Power is supplied from the input / output device 200 via A, and data is exchanged with the input / output device 200. The arithmetic processing unit 34 records the data received from the input / output device 200 in the information recording unit 36, and outputs the data recorded in the information recording unit 36 to the input / output device 200.

The card function input / output device 200 includes an antenna coil 210, a transmission / reception circuit 220, and a power supply unit 23.
0, a clock supply unit 240, a control unit 250, an external interface 260, and a card-type electronic circuit board 100.
270, a motor 280, and an environmental intensity display reading / display unit 290.

The transmission / reception circuit 220 includes a clock supply unit 24
It operates based on a clock supplied from 0. The transmission / reception circuit 220 supplies the power supplied from the power supply unit 230 to the card-type electronic circuit board 100 via the antenna coil 210. The control unit 250 controls the transmission / reception circuit 220 via the antenna coil so that the card-type electronic circuit board 1
Data read from the external interface 2
The data is transferred to an external host computer via the control unit 60.
In addition, data received from an external host computer is written to the card-type electronic circuit board 100 via the antenna coil 210. The insertion detector 270 detects that the card-type electronic circuit board 100 has been inserted into a slot provided in the card function input / output device 200. When the insertion of the card type electronic circuit board 100 is detected, the control unit 250 drives the motor 280 to take the card type electronic circuit board 100 into the card function input / output device 200. When writing of data to the card-type electronic circuit board 100 or the like is completed, the control unit 250
0 is driven to eject the card type electronic circuit board 100 out of the card function input / output device 200.

The reading / displaying section 290 for displaying the environmental strength is provided by the card type electronic circuit board 100 in which the card function input / output device 20 is used.
0, the card-type electronic circuit board 10
In addition to reading the environmental stress intensity displayed on the environmental stress intensity sensitive display unit 40, if there is a possibility that the card-type electronic circuit board 100 has received abnormal environmental stress, the fact is displayed. The environmental intensity display reading / display unit 290 includes, for example, a CCD image sensor, and captures the environmental stress intensity displayed on the environmental stress intensity sensitive display unit 40 as color image information. The control unit 250 analyzes the environmental stress intensity based on the color image information of the environmental stress intensity captured by the environmental intensity display reading / display unit 290, and determines whether the environmental stress intensity is higher than a predetermined intensity. In some cases, it is determined that there is a possibility that abnormal environmental stress has been received, and an environmental intensity display reading / display unit 290 displays the information.

Next, the operation of the card function input / output device 200 according to the present embodiment will be described.

When the card type electronic circuit board 100 is inserted into the insertion slot of the card function input / output device 200, the board insertion detector 270 detects the insertion of the board. In response to the board insertion detection signal from the board insertion detector 270, the control unit 250 drives the motor 280 to take the card-type electronic circuit board 100 into the card function input / output device 200.

When the card-type electronic circuit board 100 is taken into the card function input / output device 200, the environmental strength display reading / display unit 290 is displayed on the environmental stress intensity sensitive display unit 40 of the card-type electronic circuit board 100. The strength of the environmental stress is read, and it is determined whether or not the card-type electronic circuit board 100 may have been subjected to abnormal environmental stress.

There is no possibility of receiving abnormal environmental stress, there is no possibility that the semiconductor IC chip 30 of the card type electronic circuit board 100 is destroyed by mechanical stress due to environmental stress, or the card of the IC chip 30 is not damaged. When it is read that there is no possibility that the function has been destroyed or changed, the controller 25 of the card function input / output device 200
0 operates the power supply unit 230 and the clock supply unit 240. The transmitting / receiving circuit 220 includes the antenna coil 210
, A driving power is supplied to the arithmetic processing unit 34 via the antenna coil 20A on the card-type electronic circuit board 100 side and the transmission / reception circuit 32. The information such as the ID recorded in the information recording section 36 of the card-type electronic circuit board 100 is stored in the arithmetic processing unit 34 and the transmitting / receiving circuit 3.
2 and the antenna coil 210 and the transmission / reception circuit 2 of the card function input / output device 200 via the antenna coil 20A.
After passing through step 20, it is read into the control unit 250.

Then, new information according to the use form of the card function is input from an external host computer via the external interface 10 and the card input / output device 20
The information is recorded in the information recording unit 36 via the antenna coil 20A of the card-type electronic circuit board 100, the transmission / reception circuit 32, and the arithmetic processing unit 34 via the control unit 250, the transmission / reception circuit 220, and the antenna coil 210. Thereafter, the card-type electronic circuit board 100 on which new information is recorded is discharged from the input / output device 200 by the motor 280 of the card function input / output device 200. Here, the new information according to the use form of the card function is the card-type electronic circuit board 1.
If 00 is a credit card, for example, it is information such as the purchase price of a product purchased using the credit card.

On the other hand, the display on the environmental stress intensity sensitive display section 40 of the card-type electronic circuit board 100 indicates that the semiconductor IC chip 30 of the card-type electronic circuit board 100 may be broken by mechanical stress due to environmental stress. If it is determined that the card function of the semiconductor IC chip 30 may be destroyed or changed, the card function input / output device 200 transmits an information signal with the inserted card type electronic circuit board 100. Of the card-type electronic circuit board 100, the fact that the card-type electronic circuit board 100 may have been subjected to abnormal environmental stress is displayed on the environmental intensity display reading / display unit 290, and the card-type electronic circuit board 100 is ejected. It is to be noted that an alarm or the like may be issued in addition to an indication that there is a possibility that abnormal environmental stress has been received.

As described above, the display on the environmental stress intensity sensitive display section 40 of the card-type electronic circuit board 100 is colored or discolored due to the environmental stress, and the card-type electronic circuit may be damaged or changed in the card function. When the circuit board 100 is inserted into the card function input / output device 200, the card function input / output device 200 displays the sensitive function film on which the card function may have been destroyed before transmitting / receiving the information signal. Read the abnormalities, card function input / output device 2
In the case of 00, the transmission and reception of information with the card-type electronic circuit board 100 is stopped, so that the transmission and reception of information in an abnormal state can be eliminated.

[0034]

According to the present invention, it is possible to easily determine that the function of the card of the card type electronic circuit board is damaged or changed due to excessive environmental stress.

Further, according to the present invention, in the input / output device, even if a card-type electronic circuit board subjected to excessive environmental stress is inserted into the input / output device, the card information can be exchanged in an abnormal state. Can be stopped.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a card-type electronic circuit board according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a card-type electronic circuit board and an input / output device according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Circuit base material 20 ... Conductive film 20A ... Antenna coil part 20B ... Connection terminal 20C ... Wiring part 20D ... Conductive material 30 ... Semiconductor IC chip 32, 220 ... Transmission / reception circuit 34 ... Arithmetic processing unit 36 ... Information recording part 40 ... Environmental stress intensity response / display unit 50: anisotropic conductive adhesive 60: intermediate resin material 70: adhesive 80: film 100: card type electronic circuit board 200: card function input / output device 210: antenna coil 230: power supply unit 240: Clock supply unit 250: Control unit 260: External interface 270: Board insertion detector 280: Motor 290: Display / read unit for environmental intensity

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takanao Nakamura 1st Horiyamashita, Hadano-shi, Kanagawa Prefecture Inside the General-Purpose Computer Business Division, Hitachi, Ltd. (72) Inventor Hiroshi Kojima 1st Horiyamashita, Hadano-shi, Kanagawa, Hitachi F term in information technology (reference) 5B035 BA03 BA05 BB09 CA01 CA06 CA12 CA23 5B058 CA02 CA17 CA23 KA06 KA12

Claims (2)

[Claims] 1. A semiconductor device comprising: a conductive film formed on a surface of a film-shaped circuit substrate; a semiconductor IC chip connected to the conductive film; and a film laminated with the conductive film and the semiconductor IC chip interposed therebetween. A card-type electronic circuit board, comprising: an environmental stress intensity-sensitive display unit for displaying in accordance with the environmental stress received by the semiconductor IC chip in response to the environmental stress. . 2. An input / output device for inputting / outputting information to / from a card-type electronic circuit board having a built-in semiconductor IC, wherein the input / output device responds to environmental stress applied to a semiconductor IC chip provided on the card-type electronic circuit board. An environmental intensity display reading unit that reads an environmental stress display from an environmental stress intensity sensitive display unit that performs a display according to the intensity of the environmental stress; and if the environmental stress read by the environmental intensity display reading unit is high, An input / output device comprising a control unit for stopping input / output of information from / to the card-type electronic circuit board.