JPS5946085A - Card - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

Pr field of application: This invention applies to cards with built-in ICs. Between the back L1 technology and the dust spot credit card or II) card IK, an IC is installed inside the card, which allows a dark M11 number and identity verification. J) A card is being considered that would enable the provision of data relating to an individual, such as a code. That is, in Figures 1 and 2, (1) shows an IJ-card with a built-in child-like IC, and this (the whole car is formed into a rectangular card shape from plastic such as polyvinyl chloride). At the same time, even if hi is on its short side,
An opening or rectangular recess (2) is formed.
) The printed circuit board (3) is installed by adhesive bonding so as to close the opening of the board (3). This printed circuit board (3) is a double-sided through-hole board (σ), and its front (outside) surface has multiple copper foil patterns (3A) along the short sides of the card (1). is formed and the connection terminal (contact) T
1-7I'n, the back side (within (1111)σ) 161
, the copper foil notch turn (3B) and the copper foil notch turn (3A) are formed corresponding to the drawer it, and the first and second patterns (3A) and (3I3) correspond to each other. A comrade connects to q(・Ul) through a through hole.
', has been. In addition, (4) is configured by C-MOS.
1-Indication of an IC that has a ra-ta related to an individual, such as a name or an ID code.
And, fu. Data files related to programs and individuals “-Mourning-4it”
The ROM and work area) are also AM and h-deep microcontrollers. And this I
The n: children of C(4) are each soldered to the pattern (3F), so the IC(41 is soldered to the pattern (3B
) and through holes are connected to terminals '1'1 to Tn through; Furthermore, (5) is a relatively hard filling material made of, for example, glass epoxy resin mixed with hepteramic powder. (6C) +f, an arrow indicating the card insertion direction. Therefore, when using this card (1), simply insert this card (++) into the insertion hole of the card reading device (not shown) following the arrow (6C). The contacts are the terminals '1゛1~I of the card (1)
11. Touch the IC of the card (1) from the device bar.
(A voltage is supplied to the IC (4+) and a control signal is also supplied to the IC (4+), whereby data is taken out from the IC (4) and supplied to the IC (fK). Thus, according to this card (1), , PIN number or ID
I can provide the code etc. However, in such a card (1), the terminal 'rl~
If Tn is exposed on the surface of card (1): jt:i
7. I Ct41 is composed of C-MOS a)
Therefore, the IC (4) will be destroyed by the static voltage. Incidentally, the withstand voltage of C-MO8 alone is about 200 t, whereas static electricity can be several thousand VIC:s. For this reason, generally, by utilizing the large input impedance of C-MOB, terminal Tt % Tn and IC (
A resistor of several tens of kO is connected in series to the signal line between the IC (41) and the IC (4) to prevent damage to the IC (4) due to static electricity. However, when IC(4) operates, IC(4+
Since an operating current of about 1 mA flows through the power supply line, it is not possible to connect 141 rows of resistors of several tens of ohms to the power supply line that evening. 4) was sometimes destroyed. Also, when connecting a resistor in series to the No. 41 line, the larger the resistance of the resistor, the more reliable it will be against static electricity at a large voltage.
Due to the time constant between that resistor and the input terminal V4 of IC (41), the signal waveform may be distorted, or there may be a delay in the signal waveform.
7. f(f-like l:c) Therefore, it is not necessary to use a resistor for insurance purposes. SUMMARY OF THE INVENTION In this invention, an integrated circuit (IC) is built-in, and connections J1 are made to each terminal on the surface of the card body, K, upper %, ", and TC. Fix the terminal 1., this connection 9: M"'r- is close to 17 and the tortoise 1's discharge IR<, a pole is provided, inside the card body σ), connected to the above connection terminal i+・
A second discharge electrode is provided adjacent to the inn. 1. ', one than the pole] - The second nojQ universe is a card that makes the electrode easier to discharge t7. Therefore, the IC built into the card can be prevented from being destroyed by static air, and the reliability of the card σ)f can be improved. Embodiment FIG. 3 shows the front surface of the printed circuit board (3), and FIG. 4 shows the back surface (the left and right sides are reversed). - Also, terminal T1 is a power supply terminal, terminal Tn is a common terminal (ground terminal), and terminal T2
~Tn-1 is a signal terminal. Then, on the surface of the board (3) (Fig. 3), there is a terminal 'l'
1 to Tn are formed by a pattern (3A), but another pattern (3A) is formed to surround these terminals T1 to Tn.
A) discharge electrode Ta is formed and discharge gap Qa
is formed and connected to this electrode Ta edge f-1'n. In addition, on the back side of the board (3) (Fig. 4), there are holes Jt
# of connected patterns (3B) are formed, and among these patterns (313), the portions (3b) facing the terminals T1 to 'J''n are wide, and this wide portion (3b)
Another pattern (3B) surrounds the discharge electrode Tb.
A discharge gap Gb is formed between the electrode Tb and the wide portion (3b), and the electrode '1'b is connected to the common terminal Tn in the pattern (3B) K.
Connected. In this case, the army on the back side, pole 1”h and wide eaves /;) (3h)
The gap (ib) between the
μm]f(・12This is assumed to be -F. Also, the gap (
It is better that the interval between ia is narrower, but this gap (ia is wider than the interval between gaps ( ) b), that is, dirt and
By ζ, phosphorus, c? (Electrode '1'a and terminal '1'l
~ Ill, , and σ) Rough with bad H,

[Make it as wide as possible. In addition, the illustrated cover is fixed so as to cover the discharge gap Gb so that no one steps on the gap (3b). , on the back side of the board (3), the terminals '1'1-l
'r+-t and I (,' (corresponding terminal t1 of 41
・g turn (3B) K between ~t ++ -1 is
Resistor 1 (・1~1ζ・T1~1 is, lt-zo゛J1
are connected in series, and the terminals I11. and IC(4)'
(Ura terminal in is connected as it is by pattern (3). Also, terminals t1 to tn-t and terminals in and σ are connected to Zener diodes I) 1 to Dn-1 are connected as is.
1st. g4 is connected, and a capacitor C1 is connected between terminals t1 and in. In this case, the resistor Rt will not cause too large a voltage drop when current flows through IC(,l).
The value of culm, for example, 100 Ω, and resistor 1 mo 2~1 (
Le 1 is set to a somewhat large value, for example, about 5 to 10 kΩ. Moreover, the diodes DI to Dn-t are I c
(A Zener voltage that is larger than the operating voltage (signal voltage) of 4+ and smaller than the withstand voltage of IC (4), especially a Zener voltage that is close to the operating voltage of IC (43), for example, IC (4) If the operating voltage of is 4.5V,
The Zener voltage is 6.8■, and the capacitor C
A value that has excellent high frequency characteristics and gently increases the rise of the voltage supplied to IC (4), for example 0.0.
It is assumed to be 1 μF. According to such a configuration, during normal use, the terminal T1
Even if the operating voltage or signal voltage is supplied to ~Tn-x, the voltage is several Y, so the discharge gaps Qa, Qb
does not cause discharge. And the resistor Rt has I
Although the operating current of C(4) flows, the voltage drop across the resistor Rx is small and the Zener voltage of the diode D1σ is 1. C(larger than the operating voltage of 4+, so I
, fed by rivers. Then, connect resistor 1(・2 to −1(
・The human power impedance of n-1 (H?(4) compared to i# is large enough to 1 minute, and the human power impedance of the circuit that reads data from this cart 1) is also large enough. Therefore, the signal can be accessed from i c
1 and 2 are provided, so when a finger carrying static electricity touches the terminals '1'1 to 'l'n-1, the finger -
This and the first ten sheep, Ai) Io] 1,? than Nio 1〒(
? l%', 1. 7-1 (7-)
-C-1 SonoYj 'Ttf, Qi is electrode 'J''a 3.
1111J, leave 'fli, l-, 't, therefore, 151M child 1. '+ ~Tn-t to W> TT(,
There is no need to worry. It's a ridge, the terminals 'l゛1~'l'n-x are stationary, and when qi is added, it becomes mo at 1°, Konoff 71? , Ki is a gap (,i
a, (-ih from K, 1; 1, and freezes. Moreover, 1% of that, 1 gap (ih is inside the card (1), and the coil is caused by dirt and dust. Since the insulation is poor (1. This can protect IC (4) from damage caused by static electricity. Most of the static electricity is discharged from K, Gap Gb, but even if a small amount remains in static electricity, this small amount The remaining static electricity is limited by the resistor J (4~Rn-) and the diode Di-Dn-1,
I C (4) has diodes D1 to . Only static electricity of a voltage equal to the Zener voltage of Dn-1 is applied tx. Therefore, from this point of view, it is possible to protect the I However, according to the present invention, the static electricity during the operation delay period is absorbed by the capacitor CI (and resistor R11) and the voltage is outputted at the terminal t.
Static electricity exceeding the withstand voltage cannot be applied to 1. Frozen, terminal T
For 2~in+, conden V eye, 1 beggars fang 1
．． (y・ga, se(antigen 11.2~J(, n-1 fii
Since li is large, the first calculation results in I)2~
I) The static η1 during the n-1 operation delay period is attenuated. Therefore, this operation delay period can also be protected from static η memory.According to experiments, in the numerical example above, each - is 200 pF.
A capacitor of 111. is charged with a voltage of 1okv. L-1 This charged capacitor is connected to terminal '1゛1~Tn-11
'f! When we simulated the application of static electricity by connecting it to 1/-1, we were able to sufficiently preserve 1.C(4). In this way, the present invention can prevent the IC (4) built into the card (1) from being destroyed by static electricity. Moreover, the spacing, discharge Tlj pole '1. 'a, 'I
It can be formed in the cylinder at the same time as the terminals 1-1 to 1-1, and there is no increase in cost.In short, the large nl of the Irp (in terms of radiation η+', ltt, IQIll;) and the gap (, ia, (it) IJ'j from VC, “if
-, I-1, only the static electricity remaining on the element H, +
〜ron, −+ , I)i 〜I−)n−IK is only added, so element(1(,1〜t(,n−1,DI〜J)n
-1 is made of small-sized silk, and since it can be small, it is advantageous in terms of space when built into the card (1). Furthermore, resistor J-t2~)(・n-
With a value of 1, there is no need to increase the distortion, so the signal waveform will not be distorted or the signal will be delayed. Note that in the above, the diodes J)l to J,)n-1
Resistors may be connected in series between and the terminals t1 to 1n-1, respectively. Effects of the Invention The IC built into the card can be prevented from being destroyed by static electricity, and the reliability of the card can be improved.

[Brief explanation of drawings]

Fig. 1 is a perspective view for explaining this invention, Fig. 2 is an enlarged sectional view at A-, A, and # in Fig. 1, Fig. 3 is a front view of a part thereof, and Fig. 4 is its connection. FIG. (1) is card, (4) is IC, Ta, 'rb
C is a discharge electrode, Ga and Qb are discharge gaps. 114 Figure 3

Claims (1)

[Claims] The card body has a built-in IC, and the surface of the card body has a contact material and an end I2 connected to each terminal of the IC, and a first discharge electrode is provided in proximity to this connection terminal. Inside, a discharge electrode marked 2 is provided close to the line connected to the connection terminal, and one pole of the second discharge box is discharged from I~ than the first discharge electrode.
A rather small card.