JP2000304870A - Id tag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excellently convenient tag with firm mounting strength by building an antenna transmitting/receiving the information of a semiconductor chip housing information of a recognized object with an externally installed transmitting/receiving device in a cylindrical case having a spiral thread in the outer circumference. SOLUTION: An ID tag A is built in a cylindrical case 2 after mounting an antenna 4, a semiconductor chip 6, a capacitor 7 and the like on a printed circuit board 5 by soldering or metal bumping and sealing the printed circuit board 5 with resin 3. The antenna 4 and the capacitor 7 are set so as to be tuned to a frequency of electromagnetic waves fed from a transmitting/receiving device C or a frequency of electromagnetic waves to be transmitted to the transmitting/receiving device C. Specific information for a recognized object B is stored in the semiconductor chip 6. The ID tag A is provided with a spiral thread 8 around the outer circumference of the cylindrical case 2. A recess part to be meshed with the thread 8 is formed in the recognized object B, and when the ID tag A is mounted by screwing the thread 8 into the recess part, the ID tag A is mounted with excellent mounting strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ID tag for identifying an object in a non-contact manner.

[0002]

2. Description of the Related Art Hitherto, ID tags such as labels and tags have been used to identify the type of an object and to display information such as the unit price of the object. The ID tag is used by being attached to the identification target object such as by sticking it to the surface of the identification target object which is the object from which information is to be acquired.

In recent years, an ID tag capable of contactlessly obtaining information on an identification target includes a semiconductor chip storing information on the identification target, and an antenna capable of outputting information in the semiconductor chip. Non-contact ID tags are being considered. This ID tag receives an electromagnetic wave of a specific frequency transmitted from an external transmitting and receiving device by an antenna, and responds to the received electromagnetic wave to transmit information of the semiconductor chip to the transmitting and receiving device. It operates by transmitting using.

However, an ID having such an antenna
When the tag is attached to the surface of the identification target by a simple method such as an adhesive tape, depending on the type of the identification target, the tag may be peeled off, causing a problem that identification becomes impossible. In addition, when a thermosetting resin such as an epoxy resin is used for firm attachment, it takes a long time to cure, so that the workability is low, and if the mixing of the curing agent is incorrect, a predetermined adhesive strength cannot be obtained. In addition, there are problems that the control of the mixing ratio of the curing agent is difficult, that the adhesive strength may be reduced due to aging, and that it is difficult to maintain the adhesive strength at a high temperature.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a semiconductor chip for storing information of an object to be identified and a semiconductor chip for the semiconductor chip. An ID tag comprising an antenna capable of transmitting and receiving information to and from an externally provided transmitting and receiving device, and being attached to an object to be identified for labeling, and having excellent mounting strength and excellent mounting convenience. To provide an ID tag.

[0006]

SUMMARY OF THE INVENTION An ID tag according to the present invention is capable of transmitting and receiving information between a semiconductor chip for storing information of an object to be identified and a transmitting and receiving device provided outside the semiconductor chip. The antenna is built in a cylindrical case having a spiral screw thread on the outer periphery.

It is preferable that the case has a groove at an end face portion of the cylinder, which can be fitted with a rotary jig. It is particularly preferable that the groove that can be fitted to the rotating jig is a cross-shaped groove, a hexagonal concave portion, or a groove that can be fitted to a coin.

Further, it is configured that an electromagnetic wave output from a receiving / transmitting device provided outside is received, and information of the semiconductor chip can be transmitted to the transmitting / receiving device by the electromotive energy of the received electromagnetic wave. Preferably, a magnetic core is provided inside the coil of the antenna.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An ID tag according to the present invention will be described with reference to the drawings. FIG. 1 is a view for explaining a first embodiment of an ID tag according to the present invention, wherein FIG.
(B) is a front view, and (c) is a cross-sectional view. Also, FIG.
FIG. 5 is a diagram illustrating another embodiment of the ID tag according to the present invention.

In the first embodiment of the ID tag according to the present invention, as shown in FIG. 1, a semiconductor chip 6 for storing information of an identification target B and information of the semiconductor chip 6 are provided outside. An ID tag A in which the antenna 4 capable of transmitting and receiving to and from the transmitting and receiving device C is built in the cylindrical case 2.

This ID tag A is obtained by sealing a printed wiring board 5 on which an antenna 4, a semiconductor chip 6, a capacitor 7, and the like are mounted using solder, gold bumps, or the like, with a resin 3, and then enclosing the printed wiring board 5 in a cylindrical case 2. It is built and built. And
The antenna 4 and the capacitor 7 are set so as to tune to the frequency of the electromagnetic wave transmitted from the transmitting and receiving device C and the frequency of the electromagnetic wave transmitted to the transmitting and receiving device C.

The semiconductor chip 6 stores information specific to the identification target B, for example, information such as the type and size of the identification target B and the names of constituent materials. If the identification target B is a product (article), the semiconductor chip 6 stores information such as a unit price of the identification target B and a product code. The semiconductor chip 6 may include a circuit for modulating and demodulating electromagnetic waves, a capacitor unit, a CPU unit for performing calculations, and the like, if necessary. If the capacitor provided on the semiconductor chip 6 and the antenna 4 can resonate with the electromagnetic wave transmitted from the transmitting / receiving device C or the electromagnetic wave transmitted to the transmitting / receiving device C, the capacitor 7 as an individual component may be omitted.

The antenna 4 is electrically connected to the semiconductor chip 6 and is formed of a conductor into a predetermined shape. As a method of manufacturing the antenna 4,
It is formed by printing a metal paste or by etching a metal foil such as a copper foil. When the frequency of the electromagnetic wave transmitted / received to / from the transmission / reception device C is low, a loop coil can be used. If a magnetic core 15 such as ferrite is provided inside the coil of the antenna 4 as shown in FIG. 5, an invalid leakage magnetic flux can be reduced to extend the communication distance. Even if the distance of A is long, it is possible to transmit the information of the identification target B to the transmission / reception device C, which is preferable.

As shown in FIG. 6, when the ID tag A receives an electromagnetic wave output from an externally provided transmitting / receiving device C by an antenna 4, the ID tag A modulates and demodulates the received electromagnetic wave using the electromotive energy of the received electromagnetic wave. Power is supplied to the unit, the control unit, and the like so that the information on the identification target B stored in the memory unit can be transmitted from the antenna 4 to the transmission / reception device C. In addition, as shown in FIG.
A battery for supplying power to the ID tag A is also built in the ID tag A, and information on the identification target B stored in the semiconductor chip 6 is transmitted to the transmission / reception device C by the power supplied from the battery. However, the information of the semiconductor chip 6 is transmitted and received by the transmitting and receiving device C using the electromotive energy of the received electromagnetic wave.
When the ID tag A is formed so as to be able to transmit, it is not necessary to incorporate a battery, so that the ID tag A can be reduced in size and weight, which is preferable.

It is important that the ID tag A according to the present invention has a spiral thread 8 on the outer periphery of the cylindrical case 2 as shown in FIG. When a concave portion to be screwed with the screw thread 8 is formed in the identification object B, and the screw thread 8 is screwed into the concave portion and the ID tag A is attached, the ID tag A can be firmly attached.
It becomes tag A. Further, since the ID tag A can be firmly attached only by screwing in, the ID tag A has excellent attachment convenience.

The ID tag A according to the present invention is not limited to a coin-shaped one as shown in FIG.
(A) As shown in FIG. 2 (b), a cylindrical shape having a width longer than the diameter of the end face may be used, and as shown in FIG. An enlarged portion 10 having a larger diameter may be formed. In the case where such an enlarged portion 10 is formed, the ID tag A can be screwed into the identification object B by pinching the enlarged portion 10 with a finger, so that the ID tag A is more excellent in attachment convenience.

As shown in FIG. 3, when a groove 12 which can be fitted with a rotary jig such as a screwdriver or a wrench is formed in the end face of the cylinder of the case 2, identification can be performed using the rotary jig. Since the ID tag A can be screwed into the object B, the ID tag A can be easily attached to a portion where a protrusion or the like is provided around the object B, and the ID tag A is more convenient for attachment, which is preferable. Further, when the groove 12 is a groove 12 having a width and a depth that can be fitted with a coin, the groove 12 can be mounted using a coin without preparing a dedicated rotating jig, so that the mounting convenience is further improved. ID tag A is preferable.

This groove 12 is formed as shown in FIG.
It may be formed in the enlarged portion 10 and may be a cross-shaped groove 12a that can be fitted with a Phillips screwdriver as shown in FIG. 4B, or fitted with a hexagon wrench as shown in FIG. A possible hexagonal recess 12b may be used. In the case of the cross-shaped groove 12a or the hexagonal concave portion 12b, since the rotating jig can be easily fixed to the groove 12, the ID tag A which is more convenient for mounting is preferable.

[0019]

The ID tag according to the present invention comprises a semiconductor chip for storing information of an object to be identified, and an antenna capable of transmitting and receiving the information of the semiconductor chip to and from a transmitting / receiving device provided outside. Since the ID tag is built in a cylindrical case having a helical screw thread on the outer periphery, the ID tag has excellent attachment strength and excellent attachment convenience.

The ID tag according to claims 2 to 5 of the present invention is:
In particular, the ID tag has excellent attachment convenience.

The ID tag according to the sixth aspect of the present invention, in addition to the above-mentioned effects, does not need to incorporate a battery, so that the ID tag is excellent in miniaturization and weight reduction.

The ID tag according to claim 7 of the present invention can reduce an ineffective leakage magnetic flux in addition to the above-mentioned effects, so that the ID tag has a long communication distance.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a first embodiment of an ID tag according to the present invention, wherein (a) is a plan view, (b) is a front view,
(C) is a sectional view.

FIG. 2 is a diagram illustrating an ID tag according to the present invention;
(A) is a plan view of the second embodiment, (b) is a front view of the second embodiment, and (c) is a perspective view of the third embodiment.

FIGS. 3A and 3B are diagrams illustrating an ID tag according to a fourth embodiment of the present invention, wherein FIG. 3A is a plan view and FIG. 3B is a front view.

FIG. 4 is a diagram illustrating an ID tag according to the present invention;
(A) is a perspective view of a fifth embodiment, (b) is a perspective view of a sixth embodiment, and (c) is a perspective view of a seventh embodiment.

FIG. 5 shows an ID tag according to a first embodiment of the present invention.
It is sectional drawing explaining a modification.

FIG. 6 is a block diagram illustrating an ID tag according to a first embodiment of the present invention.

FIG. 7 shows an ID tag according to a first embodiment of the present invention.
FIG. 14 is a block diagram illustrating another modification.

[Explanation of symbols]

 Reference Signs List A ID tag B Object to be identified C Receiver / transmitter 2 Case 3 Resin 4 Antenna 5 Printed wiring board 6 Semiconductor chip 7 Capacitor 8 Screw thread 10 Enlarged portion 12 Groove 15 Magnetic core

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 3/00 G06K 19/00 H H04B 5/02 K // B42D 15/10 521 Q (72) Inventor Yutaka Maeda 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works, Ltd. 2C005 MB10 NA09 TA22 5B035 BA01 BA03 BB09 BC01 CA23 5J070 AD01 AK15 BC06 BC08 BC29 5K012 AA01 AB05 AC08 AC10 BA07

Claims (7)

[Claims] A helical screw thread on the outer periphery of a semiconductor chip for storing information of an object to be identified and an antenna capable of transmitting and receiving information of the semiconductor chip between a transmitting and receiving device provided outside. An ID tag built in a cylindrical case having: 2. The case according to claim 1, wherein the case has a groove at an end face portion of the cylinder, the groove being engageable with a rotary jig.
The described ID tag. 3. The method according to claim 1, wherein the groove that can be fitted to the rotary jig is a cross-shaped groove.
D tag. 4. The ID tag according to claim 1, wherein the groove that can be fitted to the rotary jig is a hexagonal concave portion. 5. A groove which can be fitted with a rotary jig is a groove which can be fitted with a coin.
The described ID tag. 6. An electromagnetic wave output from a transmitting / receiving device provided externally is received, and information of the semiconductor chip can be transmitted to the transmitting / receiving device by electromotive energy of the received electromagnetic wave. The ID tag according to any one of claims 1 to 5, wherein: 7. The ID tag according to claim 1, wherein a magnetic core is provided inside the coil of the antenna.