JPS63265351A - Card type electronic equipment - Google Patents

Abstract

PURPOSE:To remarkably improve the sense of value compared with an IC card containing only a collating function by providing an external terminal to a printed circuit board having a key contact serving as an input part of a card type electronic equipment including both collating and calculating functions formed unitedly. CONSTITUTION:A printed circuit board 20 includes a metallic contact 70 connected with a CPU 91. When a card type electronic equipment is set into a card slot of a terminal T, the contact 70 is connected to each corresponding contact pin P. Thus the power supply voltage is applied to a collating IC chip 22 from the terminal T via a prescribed terminal of the contact 70. An identification code supplied from a key input part S is displayed on a display 30 via a memory part 92. When a CF key is operated, a key discriminating part 81 discriminate this key operation and applies an output signal to a CPU 82. Thus a ciphering identification code of an EP-ROM 93 is restored by a restoring circuit 94 and stored. This stored code is compared with a code of the part 92 by a comparator 95. The result of this comparison is displayed on the display 30 in the form of OK or NG.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to card type electronic equipment.

[Technical background]

Credit cards, which have become rapidly popular in recent years, have embossments or magnetic stripes on the card surface, so there is an extremely high risk that if the card is lost or stolen, the personal identification number can be read and used by another person. For this reason, electronic identification cards, so-called IC cards, in which an IC chip on which a personal identification number is written are embedded inside the card, have recently been considered.

However, although this IC card simply performs the same identification function as before, it has a built-in IC chip, making it extremely expensive compared to the embossed or magnetic stripe type, and it is unknown whether or not it will occur. In terms of value for risk, it was ranked #1.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to provide a card-type electronic device with an improved sense of value by integrating a calculation function and an identification function.

[Summary of the invention]

The card-type electronic device of the present invention has a key input section for inputting numerical values and verification instructions, a display body, and an external terminal for connecting to an external device, and a key contact point constituting the key input section. The external terminals are provided on a wiring board having the same.

〔Example〕

Hereinafter, the card type electronic device of the present invention will be explained with reference to the drawings.

Figure wc1 is an external perspective view showing one embodiment of the present invention, and reference numeral 10 in the figure indicates a computer equipped with a function as a so-called small electronic calculator and a verification function such as an IC card that can verify an identification code. Shows the equipment nurse of the card-type electronic device. The upper surface of this equipment case 10 is covered with a flexible upper sheet 13 made of transparent polyester or the like, and this upper sheet 13 has numeric key displays 131 from O to 9, and calculation command key displays 132 such as four arithmetic operations.
is printed on the back and can be pressed from the outside.

A part of the top sheet 13 is not printed and forms a transparent window 133 for display through which the inside can be seen.

Further, openings 134 are formed below the light-transmitting window section 133 of the top sheet 13, and each opening 1
34 to eight metal contacts 7 in 2 columns x 4 rows, which will be described later.
0... is exposed to the outside. Each metal contact 70
has a rectangular shape of (L = = 2 mm)
The distance between the center lines of adjacent metal contacts in the front-rear direction in FIG. 1 is set to 1.54 m. Also, its position is 8 = 10.25th in the same figure, [=
19.2:3m, and these dimensions comply with the I80 standard proposal TC97/5C17.

The external dimensions of this device case 10 satisfy the regulations for credit cards with embossed l5O2894, and are 0.8 m thick x 85.5 in long x 54 n+ wide.
It is said that

The technical basis for each of these dimensions is provided in the description below.

2 and 3 are enlarged sectional views taken along line n-■ and III-II[, IJ in FIG. 1, respectively, and FIG. 4 is a perspective view of the overall appearance.

A wiring board 20, an ultra-thin display (for example, a liquid crystal display) 30, and a paper battery 40 are disposed below the top sheet 13, and a synthetic resin film base is disposed on the upper surface of the wiring board 20. A spacer 50 having both surfaces coated with adhesive is polymerized. The spacer 50 has approximately the same shape as the wiring board 20. The wiring board 20 is made of a relatively rigid and flexible material such as glass epoxy resin, and each key display 131 and 132 on the top sheet 13 A large number of sets of split-type fixed contacts 23, each consisting of a pair of contacts 23a and 23b, are arranged in correspondence to the above. Furthermore, the aforementioned eight metal contacts 70 are arranged on the same side of the wiring board 20. These metal contacts 70... are made by applying gold plating 70b on copper foil 70a, and have a thickness of 0.03 to 0.05 tm. Further, this wiring board 20 includes a calculation integrated circuit chip 21 for performing normal calculation functions such as four arithmetic operations, and a verification integrated circuit for storing and collating an identification code for identifying an owner, member, etc. The chip 22 is inserted into through holes 20a and 20b formed in the wiring board 20, and connected to a conductive foil 26 on the lower surface side of the wiring board 20. Each of the metal contacts) 70... is routed from the upper surface of the wiring board 20 to the lower surface side via the through hole 20c..., and is connected to each terminal of the integrated circuit chip 22 for verification. In addition, each terminal of the integrated circuit chip 21 for calculation is connected to fixed contacts 23a..., 23b... on the upper surface side and connection terminals 24... of the display body 30 arranged on one side of the lower surface. are connected to form a predetermined circuit. In this case, each terminal of the integrated circuit chips 21 and 22 is bonded to a conductive foil 26 protruding from the lower surface side of the through holes 20a and 20b of the wiring board 200. That is, after forming through holes 20a and 20b in the wiring board 2°, copper foil is laminated on the entire lower surface of the wiring board 20, including the through holes 20a and 20b, and is etched to form the conductive foil 26.
A predetermined wiring pattern is formed. Next, the required portions of the conductive foil 26 are plated with tin, and the gold wires 22a of the integrated circuit chip are bonded to them, followed by sealing with a resin 22b (Fig. 3). .

Further, the spacer 504ζ has a large number of openings 5 corresponding to each of the fixed contacts 23 on the wiring board 20.
, and openings 52 for exposing the metal contacts 70 to the outside, the spacer 50 adheres to the upper surface of the integrated circuit chip 21, 22, and the openings 52, . ...the metal contact 7
0..., and 11 in the figure is a frame formed by etching a thin metal plate such as stainless steel or by injection molding of resin, and its external shape is approximately the same as the top sheet 13. The inside of the frame 11 is divided into a storage space for the wiring board 20, a display storage space B, and a battery storage space C. The wiring board 20 and the spacer 50 are overlapped and fitted into the storage space. Furthermore, the display body 30 is formed into an ultra-thin shape by enclosing a liquid crystal element between a pair of transparent sheets made of polyester or polysulfone as a base material.
This display body 30 is a display panel storage space B of the frame body 11.
It is fitted in and placed on the side of the wiring board 20, and is connected to the connection #I terminal 24 on the lower surface of one end edge of the wiring board 20 by a film-like heat seal connector 31.

Further, the paper battery 40 is fitted into the battery storage space C of the frame 11 and arranged on the side of the wiring board 20 in parallel with the wiring board 2o. The electrodes (negative electrode and positive electrode) are connected to battery connection terminals 25.25 formed on the upper and lower surfaces of one side edge of the wiring board 20 by a pair of power supply conductive leads 60.60 that contact the electrode surfaces. ing.

This battery connection terminal 25.25 is connected to the terminal of the integrated circuit chip 21 for calculation by the conductive foil 25a, and is also connected to the terminal of the integrated circuit chip 22 for verification, and is connected to the memory of this integrated circuit chip 22. Provides constant power supply voltage.

The upper sheet 12 has an opening 5 provided in the spacer 50.
1.51 facing openings 121, 121, the display body 3
0 fits into the fitting hole 122 and the wiring board 2
Openings 123 corresponding to the metal contacts (0) 70 are formed by etching.

The lower sheet 14 is a thin metal plate that is slightly thicker than the upper sheet 12, and includes a display body fitting recess 141 into which the lower part of the display body 30 corresponding to the display body storage space B of the frame body 11 is fitted;
Four battery fitting parts 142 are provided to fit the lower part of the paper battery 40 corresponding to the battery storage space C, and furthermore, this lower sheet 14 is provided with a battery fitting part 142 for calculation and verification purposes attached to the wiring board 20. integrated circuit chip 21.22
Chip fitting recesses 143 and 144 are provided into which the lower portions of the chips are fitted. These fitting recesses are all formed by half etching.

Between the lower sheet 14 and the frame 11, the lower sheet 14
And an adhesive sheet 16 having the same shape as the frame 11 is arranged. This adhesive sheet 16 is made by applying an acrylic resin adhesive to both sides of a polyester sheet serving as a base member.

The upper sheet 12 has its lower peripheral edge bonded to the upper surface of the frame 11, the spacer 50 is bonded to the lower surface of the upper sheet 12, and the upper surface of the adhesive sheet 16 is attached to the lower surface of the frame 11. In addition to the peripheral edge being adhered, the lower sheet 14 is adhered to the lower surface of this adhesive sheet 16. Therefore, the upper sheet 12, the frame 11, and the lower keto-x14 form a closed device case structure,
A wiring board 20 and an integrated circuit chip 2 arranged inside this
1, 22, the display body 3o, the paper-like housing 40, and other electronic components can be reliably protected from the outside.

Next, the paper battery 40. To explain,
This paper-shaped battery 40 has been specially devised so that the overall thickness can be made extremely thin and it can be curved to some extent.This paper-shaped battery 40 has a structure as shown in FIG. ing.

A pair of flat film-like electrode plates 41a and 4 made of membranes.
An electromotive unit 42 is provided between 1b, and the pair of 11t electrode plates, that is, the negative electrode plate 41a and the positive electrode plate 41b, are bonded at their outer peripheries with a heat-sealing sealant (inorganic and organic composite material) 46. The periphery of the electromotive unit 42 is sealed, and the surfaces of the negative electrode plate 41a and the positive electrode plate 41b are made into full-surface electrodes that form the battery surface as they are.

The electromotive unit 42 has a negative electrode active material 43 made of metallic lithium and a positive electrode active material 44 made of manganese dioxide, which are laminated with a separator 45 made of a golipropylene nonwoven fabric impregnated with an organic 1 solution. The positive electrode active material 44 is printed on the inner surface of the positive electrode plate 41b, and the negative electrode active material 43 is printed on the inner surface of the positive electrode plate 41b.
is in close contact with the inner surface of the negative electrode plate 41a.

In this manner, the paper-like battery 40 has the film-like negative electrode plate 41a and positive electrode plate 41b serving as the exterior body of the battery, and the periphery of the electromotive unit 42 is surrounded by the negative electrode plate 41a.
and the positive electrode plate 41b are sealed by adhering them with a heat-adhesive sealing material 46, so that the thickness thereof is very thin and has flexibility that allows it to be bent to some extent. The electrodes (negative electrode plate 41a and positive electrode plate 41b) on the upper and lower surfaces of the battery that are in contact with the conductive leads 60, 60 are flat over the entire surface including the sealing part (the part bonded by the sealing material 46) on the outer periphery, and are further sealed. The peeling resistance of the attached part and the fracture resistance of the electrode are also excellent.

The electromotive principle of this paper-like battery 40 is basically the same as that of a well-known button-type lithium battery, so its explanation will be omitted.

To explain the thickness of this paper-like battery 4o, the thickness of the electromotive unit 42 is 350μ (the thickness of the negative electrode active material 43 is 50 to 80μ, the thickness of the positive electrode active material 44 is 150 to 1
80μ, the thickness of the separator 45 is 100 to 150μ),
The thickness of the negative electrode plate 41a and the positive electrode plate 41b is 50μ each, and the total battery thickness is 450μ (0.45m), which is the thinnest button-type lithium battery (thickness 1.6 ut), it is much thinner.

In this embodiment, a rectangular paper battery 40 with a planar dimension of about 34 m x 17 m is used, and the paper battery 400 weighs 0.7 g.
, the discharge capacity is 17mA.

The power source conductive leads 60.60 are formed on one surface of a synthetic resin band-shaped base film 61.61 by vapor deposition of a conductive metal or screen printing of a conductive paint. One end of the conductive lead 60 is bonded to the battery connection terminal 25.25 of the wiring board 20 together with a base film 61.61 using a conductive adhesive, and each conductive lead 60, 60 and its base film 61.6
The other end of the paper battery 40 is introduced into the battery storage space C and is provided so as to come into contact with the electrodes on the upper and lower surfaces of the paper battery 40 that is stored in the battery storage space C.

The pair of power conductive leads 60, 60 are adhered to the surface, and the portions of the upper sheet 12, the lower sheet, and the lower sheet 14 where the conductive lead tips are adhered are cut diagonally into the battery storage space C. As a result, the cut-and-raised pieces 125° 145 are pressed into contact with the electrodes on the upper and lower surfaces of the paper battery 40 due to their elasticity.

On the other hand, the upper sheet 13 and the lower sheet 1 of the coos 10
5 are made of synthetic resin sheets, and these are adhered to the surfaces of the upper sheet 12 and lower sheet 140, respectively.

In addition, as described above, the top sheet 13 has the key display 13 on the transparent resin sheet except for the portion that becomes the light-transmitting window section 133.
1, 132, a background pattern (not shown), etc. are printed on the display panel 30, and the display panel 30 is arranged corresponding to the light-transmitting window section 133 of the top sheet 13. On the lower surface of each key display 131, 132 of this upper sheet 13, movable contacts 136, which are arranged in each opening 121 of the upper sheet 12, are formed by printing carbon ink. There is. This movable contact 136 is connected to the operation section (numbers, letters, symbols, etc. 131, etc.) of the top sheet 13.
* is printed) with your finger to elastically deform it downward, and the fixed switch contact 2 is pressed against the switch fixed contact 23 on the wiring board 20 surface.
A pair of contacts 23a forming 3.

This movable contact 134 and the fixed contact 23 constitute a key switch. The CF main key 35, which is displayed as ``CF'' in the key display, is used to check the identification code stored inside the device with the code input by the user by operating the key switch. Next, the functions of the card-type electronic device of the present invention will be explained with reference to the four-wheel drive circuit diagram of FIG.

In FIG. 6, the circuits configured inside the calculation integrated circuit chip 21 and the verification integrated circuit chip 22 are as follows.
Indicated by dots, @SO and dotted line 90, respectively.

The former has the functions of a small M electronic calculator, which is usually called a calculator, and is composed of a key discrimination section 81, a CPU (central processing unit) 82, an arithmetic circuit 83, a memory section 84, a display drive circuit 85, etc. , movable contacts 134 . . . fixed contacts 23a . The arithmetic circuit 83 and the memory unit 84 perform various calculations such as arithmetic calculations according to the output signal sent out, and the input information and the calculation results are displayed on the display body 30 via the display drive circuit 85. It is. In addition, the latter includes the CPU 91 and the memory section 92.
In addition to 'BP-R, OM (Erasable Prog
ramab16 ROM) 93.

An identification code for identifying the owner, member, etc. (this identification code is remembered by the card owner as a personal identification number) is written in advance in this FliP-ROM 93 in an encrypted manner.

Further, the CPU 91 is connected to the metal contacts 70..., and each of the metal contacts 70... is contacted by a contact bin P... of a terminal T such as a cash dispenser (see FIG. 3). (indicated by a chain double-dashed line). Metal contacts 70... are address/data input/output terminals, clock terminals, reset terminals, 'gi
Form the VDD terminal for the power supply, the GND terminal, and the CC terminal that provides the voltage when writing to the HP-ROM, insert this device from the card insertion slot of the terminal T, and connect the metal contact 7.
0... is connected to each corresponding contact pin P..., the VD of the metal contact 70... is connected from the bottom of the terminal.
Integrated circuit chip 2 for verification via D terminal and GND terminal
A power supply voltage is supplied to the terminal 2, and this connection is confirmed and a data transmission request is issued (not shown). Next, when the owner inputs the identification hood with a password by operating the key manual section S provided in the card-type electronic device, the input data is input into the memory section 92 and displayed on the display 30. .

When the owner confirms that the hood is the password, he operates the CF primary key 35.

This operation of the CF main key 35 is discriminated by a key discriminator 81, and an output signal is given to the CPU 82 via line b. As a result, the encrypted identification code stored in the gP-0M93 is read out to the decoding circuit 94 and decrypted, and then temporarily stored in the buffer of the decoding circuit 94. be done.

Then, a comparison circuit 95 compares the code stored in the memory section 92 and the identification code stored in the buffer of the restoration circuit 94 to match.

If both match, CPU91 and CPU82
For example, "OK" is displayed by the display body 30 via the memory section 84 and display drive circuit 85, and if there is a mismatch, "NG" or the like is displayed.

In the above, the password number 1 entered manually and the EP-RO
A comparison circuit for verifying the match with the identification code stored in M may be provided on the terminal side, and only an identification function to enable verification may be provided inside the device. It is also possible to provide a match or mismatch display function on the terminal side.

Therefore, the card type electronic device of the present invention can be made to have the same thickness as a credit card.

That is, to give one example, in this example, integrated circuit chips 21, 21, a display body 30, a paper-like battery 40,
are respectively Q and 5 mtx, and the top sheet 13 is 0.
01111% upper sheet 12 with 0.05 crane, spacer 5
0 is made of 0.03xIE, the lower sheet 14 is made of 0.2 x 1, and the lower sheet 15 is made of 0.05 silk.
3 and 144 are Q, lax by half etching
It is thick and thick. Therefore, the thickness Q of the lower sheet 14
, l ax is absorbed by the thickness of each electronic component, and the total thickness of the entire device is 0.8 mm. Further, at this time, the frame body 11 has a thickness of 0.4K, and the K adhesive sheet 16 has a thickness of 0.03 degrees.

Since the card-type electronic device of the present invention has an identification code verification function and a calculation function integrated, it is superior to an IC card that only has a verification function. You can improve your sense of value.

In the above description, it is assumed that the integrated circuit chip is separated for calculation and verification, but it goes without saying that both functions may be integrated into one chip. Further, the wiring board 20 includes fixed contacts 23, integrated circuit chips 21, 22,
and metal contacts) 70... are supported by one board, but they may be divided as appropriate and connected by flexible connectors. In addition, the lower sheet 14 can be used without using the wiring board 20 as a single sheet-like board.
In this case, one integrated circuit chip 21, 22 has each terminal connected to the conductive foil of the tape carrier. Moreover, a so-called chip-on-board method may be adopted in which the conductive foil of the tape carrier is bonded to the conductive pattern. In addition, the metal contacts 70 are fitted into the openings 134 of the top sheet 13 (a little less than 0.1 m in the example), but if this makes it difficult to wipe off dust, etc., the conductive metal It is also possible to attach a foil and provide it so as to be flush with or protrude from the upper surface of the top sheet 13. Further, the metal contacts 70... may be provided on the lower surface of the wiring board 20 and may be provided on the opposite surface of the key switch. Further, although the embodiment has been described in which a paper battery is used as the power supply battery, a solar battery may be used instead.

In addition, the card-type electronic device of the present invention can be modified in various ways using its basic technical idea.

〔Effect of the invention〕

As described above, since the card-type electronic device of the present invention has a verification function and a calculation function integrated, it has the effect of greatly improving the sense of value compared to a conventional IC card that only has a verification function. There is.

[Brief explanation of the drawing]

The drawings all relate to one embodiment of the card-type electronic device of the present invention.
...An enlarged sectional view along the line, Figure 3 is lll-In of Figure 1.
4f3fi is an exploded perspective view of the whole, FIG. 5 is a partially cutaway side view of the paper battery, and FIG. 6 is a block circuit for explaining the functions of the card-type electronic device of the embodiment. It is a diagram. 10...Equipment case, 11...Frame, 12...Top sheet, 13...
Top sheet, 14...Lower sheet, 20...
...Wiring board, 21.22...Integrated circuit chip, 23...Fixed contact, 30...
Display body, 40...paper-like battery. 70...Metal contact, 131.132,135...Key display, 133
...Translucent window portion, 141, 142, 143, 144... Fitting recess.

Claims (1)

[Claims] A card-type electronic device having a key input section for inputting numerical values and control instructions, a display body, and an external terminal for connecting to an external device, wherein the key input section includes a wiring board having key contacts constituting the key input section. A card-type electronic device characterized by having an external terminal.