JP4896395B2 - Article having wireless chip - Google Patents

Description

  The present invention relates to a packaging material, a tag, a certificate, a bill, and a securities in which a semiconductor device capable of wireless communication is formed on a support (also referred to as a base material).

  Semiconductor devices typified by wireless tags capable of transmitting and receiving data such as identification information wirelessly are being put into practical use in various fields, and further expansion of the market is expected as a new type of communication information terminal. . The wireless tag is also referred to as an RFID (Radio frequency identification) tag or an IC tag. The wireless tag currently in practical use includes an antenna and an integrated circuit (IC chip) formed using a semiconductor substrate. There are many things.

  Unlike magnetic cards and barcodes, which can also read data wirelessly, wireless tags are unlikely to be able to read stored data by physical methods, and are difficult to tamper with. Are better. Also, unlike magnetic cards, barcodes, etc., manufacturing a wireless tag requires a relatively large-scale production facility, and thus has the advantage of being difficult to forge.

  However, as technology for forging a wireless tag becomes more sophisticated, it is not easy to prevent or detect forgery or forgery simply by using a wireless tag.

  Further, in principle, the wireless tag can be made smaller than a magnetic card, a bar code, or the like, and therefore, it is expected to further expand its application. However, the wireless tag may be attached to a flexible material such as paper or plastic depending on the application, but the semiconductor substrate has a lower mechanical strength than the above-described material. Therefore, when a wireless tag is formed on a packaging material, a tag, a certificate, a banknote, a valuable security, or the like that uses a flexible material as a support, the wireless tag may be damaged in the process of use, which is not practical.

  Note that the mechanical strength can be improved to some extent by reducing the area of the wireless tag itself. However, in this case, it becomes difficult to ensure the circuit scale and antenna gain. In particular, when the gain of the antenna is lowered, the communication distance is shortened and the use of the wireless tag is limited, which is not preferable. Therefore, if it is important to secure the gain of the antenna, the area of the wireless tag cannot be reduced at will, and there is a limit in improving the mechanical strength.

  Further, in the case of an IC chip formed using a semiconductor substrate, since the semiconductor substrate functions as a conductor and shields radio waves, there is a problem that the signal is easily attenuated depending on the direction of the transmitted radio waves.

  An object of the present invention is to provide a packaging material, a tag, a certificate, a banknote, and a securities that can more reliably prevent forgery or forgery. Furthermore, the present invention provides a packaging material, a tag, a certificate, a banknote, and a securities using a wireless tag that can reduce costs, increase mechanical strength, and prevent radio waves from being shielded. Let it be an issue.

  In the present invention, a plurality of wireless tags are used for objects such as packaging materials, tags, certificates, banknotes, and securities. A wireless tag (also referred to as a wireless chip or a semiconductor device) includes an antenna and an integrated circuit electrically connected to the antenna. With the antenna, signals can be transmitted and received between the reader / writer and the integrated circuit, or a power supply voltage can be supplied from the reader / writer to the integrated circuit. And the position which attaches a some radio | wireless tag for every target object is changed to the extent which can identify a target object. By identifying the positions of a plurality of wireless tags attached to each object, the object is identified using the wireless tag.

  Therefore, in the present invention, if the area of the wireless tag is reduced with an emphasis on mechanical strength, the accuracy of the position of the detected wireless tag is improved by taking advantage of the fact that it is difficult to secure the gain of the antenna. , Prevention of impersonation or the certainty of detection can be increased. Note that the more the positions of the plurality of wireless tags are random, the more reliably the object can be identified, and the certainty of forgery and forgery prevention or detection can be improved.

  Note that the packaging material, tag, certificate, banknote and securities of the present invention use a flexible support such as plastic or paper, and a wireless tag is attached to the surface of the support, or wireless inside the support. Create tags.

  In the present invention, the packaging material corresponds to a support that can be molded or molded to wrap an object such as a wrap, a plastic bottle, a tray, or a capsule. In the present invention, a tag corresponds to a tag having information on an object to which the tag is added, such as a tag, a price tag, or a name tag. In the present invention, a certificate corresponds to a document proving the fact, such as a family register copy, a resident's card, a passport, a license, an identification card, a membership card, a credit card, a cash card, a prepaid card, a medical examination ticket, and a commuter pass. In the present invention, securities are equivalent to securities displaying private property rights such as bills, checks, freight exchange certificates, cargo securities, warehouse securities, stock certificates, bonds, gift certificates, mortgage securities.

  If a memory such as a ROM that cannot rewrite data is formed, forgery of packaging materials, tags, certificates, banknotes, and securities can be further prevented. In some of the plurality of wireless tags, the data stored in the memory may be changed intentionally. With the above configuration, in addition to the data related to the position of the wireless tag, the data stored in each wireless tag can be used for identification of the object, thereby further ensuring the identification of the object and preventing forgery and forgery. Or the certainty of detection can be improved.

  In the present invention, a wireless tag may be formed using a transistor formed over a single crystal semiconductor substrate, but an integrated circuit (hereinafter referred to as a TFT (thin film transistor)) including a thin film semiconductor film that is insulated and separated (hereinafter referred to as an integrated circuit). , A thin film integrated circuit) may be used for the wireless tag. Unlike the transistor formed on the semiconductor substrate, a parasitic diode is hardly formed between the substrate and the semiconductor tag formed by using the insulated TFT. A large amount of current does not flow into the drain region due to the potential of the AC signal applied to the source region or the drain region, and deterioration or destruction is unlikely to occur.

  Since a wireless tag using a thin film integrated circuit is inexpensive and small in size, it is suitable for an application that is eventually discarded by a consumer. In particular, when used for packaging a product whose price difference of several yen or several tens of yen greatly affects sales, the packaging material having an inexpensive and small wireless tag of the present invention is very useful. In addition, for example, using a wireless tag using a thin film integrated circuit for food products whose merchandise value is greatly influenced by the production area, producer, etc. is useful for preventing impersonation of the production area, producer, etc. at a low cost. is there. In addition, by using the packaging material of the present invention, it is easy to record the process in the production stage of goods, and to understand the place of origin, producer, date of manufacture, processing method, etc. for wholesalers, retailers, and consumers. become.

  Note that the antenna may be formed together with the thin film integrated circuit and attached to the flexible support together with the thin film integrated circuit, or formed separately from the thin film integrated circuit and attached to the flexible support together with the thin film integrated circuit. good. Alternatively, an antenna may be formed in advance on a flexible support, and the thin film integrated circuit may be bonded to the object or the flexible support so as to be electrically connected to the antenna.

  A thin film integrated circuit is bonded by a method in which a metal oxide film is provided between a highly heat-resistant substrate and the thin film integrated circuit, the metal oxide film is weakened by crystallization, and the thin film integrated circuit is peeled off and bonded. An amorphous silicon film containing hydrogen is provided between a high substrate and a thin film integrated circuit, and the amorphous silicon film is removed by laser light irradiation or etching to separate and bond the substrate and the thin film integrated circuit Various methods may be used, such as a method of removing a thin film integrated circuit from a substrate by mechanically removing the substrate having high heat resistance on which the thin film integrated circuit is formed or removing the substrate by etching with a solution or gas. it can.

  Alternatively, thin film integrated circuits may be stacked by attaching thin film integrated circuits that are separately manufactured to increase the circuit scale and the memory capacity. A thin film integrated circuit is remarkably thinner than an IC chip manufactured using a semiconductor substrate. Therefore, even when a plurality of thin film integrated circuits are stacked, the mechanical strength of the wireless tag can be maintained to some extent. For connection between the stacked thin film integrated circuits, a known connection method such as a flip chip method, a TAB (Tape Automated Bonding) method, or a wire bonding method can be used.

  In the present invention, by using a plurality of wireless tags for objects such as packaging materials, tags, certificates, banknotes, securities, etc., forgery of objects, prevention of forgery or forgery, certainty of detection of forged objects Can be increased. If the area of the wireless tag is reduced with emphasis on mechanical strength, the accuracy of the position of the detected wireless tag is improved by taking the fact that it is difficult to secure the antenna gain, and more wireless The more the tag positions are random, the more reliable the object can be identified, and the more reliable the prevention or detection of forgery and forgery.

  In addition, the packaging material, tag, certificate, banknote and securities of the present invention use a thin film integrated circuit for a wireless tag, so that a parasitic diode is formed between the substrate and the transistor formed on the semiconductor substrate. Hateful. A large amount of current does not flow into the drain region due to the potential of the AC signal applied to the source region or the drain region, and deterioration or destruction is unlikely to occur. In addition, the packaging material, tag, certificate, banknote, and securities of the present invention can prevent a signal from being attenuated by shielding radio waves by using a thin film integrated circuit for the wireless tag.

  In addition, the frequency of radio waves generally used in radio tags is often 13.56 MHz and 2.45 GHz, and it is extremely important to improve the versatility by forming radio tags so that radio waves of that frequency can be detected. Is important to.

By using a thin film integrated circuit for the wireless tag, the cost of packaging materials, tags, certificates, banknotes, and securities can be significantly reduced. For example, a case where a silicon substrate having a diameter of 12 inches is used is compared with a case where a 73 × 92 cm ² glass substrate is used. The area of the former silicon substrate is about 73000 mm ² , while the area of the latter glass substrate is about 672000 mm ² , and the glass substrate corresponds to about 9.2 times the silicon substrate. In about the area of the latter glass substrate 672000Mm ^2, ignoring the area consumed by dividing the substrate, becomes the calculation of 1 mm ² wireless tag can be about 672,000 pieces formed, the number of the coefficients is approximately 9.2 times the silicon substrate It corresponds to a number. Capital investment for mass production of wireless tags requires fewer steps when using a 73 × 92 cm ² glass substrate than when using a 12 inch diameter silicon substrate. It can be done in a third. Furthermore, when the thin film integrated circuit is peeled from the glass substrate, the glass substrate can be used again. Therefore, cost can be significantly reduced as compared with the case of using a silicon substrate, even in view of the cost of filling a damaged glass substrate or cleaning the surface of the glass substrate. The price of a 73 × 92 cm ² glass substrate is about half that of a 12-inch diameter silicon substrate.

Therefore, it can be seen that when a 73 × 92 cm ² glass substrate is used, the price of the wireless tag can be reduced to about 1/30 compared with a case where a 12-inch diameter silicon substrate is used. Since the wireless tag is also expected to be used on the premise of disposable, the packaging material, tag, certificate, banknote, and securities of the present invention that can significantly reduce the cost are very useful.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention can be implemented in many different modes, and those skilled in the art can easily understand that the modes and details can be variously changed without departing from the spirit and scope of the present invention. Is done. Therefore, the present invention is not construed as being limited to the description of this embodiment mode.

  Next, the configuration of the packaging material, tag, certificate, banknote and securities of the present invention will be described. The packaging material, tag, certificate, banknote and securities of the present invention have a plurality of wireless tags, and the wireless tags are formed inside or on the surface of a flexible support such as paper or plastic. The position of the wireless tag is changed between individuals so that identification is possible.

  FIG. 9A shows a state where a plurality of wireless tags 102 are scattered on the support body 101. The position of the wireless tag 102 may have a certain regularity, but it can be identified even when the number of individuals to be identified is larger by dispersing it so as not to have a regularity. can do. After the wireless tag 102 is scattered on the support 101, the wireless tag 102 may be covered with a support prepared separately so that the wireless tag 102 is not exposed.

  Note that in the case where an IC chip formed over a single crystal substrate is used for a wireless tag, it is desirable to align the wireless tags in a direction in which radio waves are more easily received by an antenna. On the other hand, in the case of a wireless tag using a thin film integrated circuit, since a semiconductor substrate that attenuates radio waves is not used, it is easy to spread radio waves from relatively any direction. Therefore, compared with a wireless tag using an IC chip, a wireless tag using a thin film integrated circuit can reduce restrictions when dispersed on the support 101.

  When a plurality of supports used for packaging materials, tags, certificates, banknotes, and securities are formed from one support, a plurality of wireless tags are formed on each of the plurality of supports. FIG. 9B illustrates a state in which the support body 101 illustrated in FIG. 9A is divided into a plurality of support bodies 103. As shown in FIG. 9B, when a plurality of supports are formed from one support, the original support is wirelessly connected so that a plurality of wireless tags are formed on each support 103 when divided. Take care to distribute tags.

  Note that since the wireless tag crosses at the boundary of the division, even if the wireless tag is damaged when the support 101 is divided, the wireless tag only needs to be covered with another wireless tag that is not damaged.

  Next, FIG. 10 shows a support 201 used for the packaging material, tag, certificate, banknote and securities of the present invention, a wireless tag 202 scattered on the support 201, and a wireless tag 202 by a reader / writer. The area 203 from which data can be read is shown. Each of the plurality of wireless tags 202 formed on the support includes an antenna and an IC chip or a thin film integrated circuit. Therefore, by using a reader / writer, the position of each wireless tag on the support can be read as information.

  Specifically, the location information of each wireless tag can be read by scanning the area 203 on the support 201 and receiving data from each of the plurality of wireless tags 202 in the process of searching. FIG. 10 shows a state where the area 203 is scanned in the direction indicated by the dashed arrow. The scanning of the area 203 may be performed by moving the support 201, may be performed by fixing the support 201 and moving the area 203, or a combination of both.

  In FIG. 10, the reader / writer scans an area 203 where data can be read from the wireless tag 202 and reads position information, but the present invention is not limited to this configuration. For example, when data is read from each of the plurality of wireless tags 202, the position information may be read by grasping the distance from the reader / writer antenna based on the strength of a signal including the data. In this case, it is desirable to expand the area 203 by increasing the sensitivity of the reader / writer so that the entire support 201 is accommodated in the area 203.

  Further, wireless tags in which different data are stored may be mixed, and identification may be performed using the contents of the stored data in addition to the position information of each of the plurality of wireless tags 202.

  The data stored in each of the plurality of wireless tags may be data stored in a non-rewritable memory such as a ROM, or data stored in a rewritable memory. May be. However, even if the data is stored in a rewritable memory, for example, a password is required when data is rewritten, or a secret key is formed so that an unspecified third party does not alter the data. Or may be crafted. When data is stored in a rewritable memory, data writing may be performed after the plurality of wireless tags are dispersed on the support or may be performed before the data is dispersed.

  Next, the identification procedure in the reader / writer will be described. FIG. 2 is a flowchart showing a procedure for identifying using the position information of the wireless tag formed on the support and the serial number attached to the support.

  First, as shown in FIG. 2, the serial number assigned to each support for reading out the reference position information is input to the reader / writer. Although the serial number is used in FIG. 2, the serial number may not be used as long as the position information serving as a reference corresponding to the support can be specified. Then, using the serial number, the reference position information corresponding to the support is read out. The reference position information may be stored in the reader / writer or may be stored in a separately prepared server.

  The reader / writer reads position information of a plurality of wireless tags formed on the support. Then, the reference position information is compared with the position information of the plurality of wireless tags actually read. As a result of the collation, when the two pieces of position information match, the packaging material, tag, certificate, banknote and securities are authenticated. Conversely, if the two pieces of positional information do not match as a result of the collation, the packaging material, tag, certificate, banknote and securities are not authenticated, and forgery or forgery is suspected.

  In the present invention, in addition to the position information of the wireless tag, data read from the wireless tag can also be used for identification of the object. FIG. 3 is a flowchart showing a procedure for identifying using the position information of the wireless tag formed on the support, the data read from the wireless tag, and the serial number attached to the support.

  In FIG. 3, as in FIG. 2, the serial number is used to read the reference position information corresponding to the support and the reference data that the wireless tag will have. The reader / writer reads position information of a plurality of wireless tags formed on the support and data stored in the plurality of wireless tags. Then, the object can be identified by comparing the two pieces of position information and the two data.

  As shown in FIG. 3, in addition to the position information of the wireless tag, the data read from the wireless tag is also used for the identification of the object, thereby further ensuring the identification of the object and preventing or detecting forgery and forgery. The certainty can be increased.

  Next, an example of a functional configuration of the wireless tag used in the present invention will be described with reference to FIG. In FIG. 11, reference numeral 300 corresponds to an antenna, and 301 corresponds to a thin film integrated circuit or an IC chip. The antenna 300 includes an antenna coil 302 and a capacitive element 303 formed in the antenna coil 302. The thin film integrated circuit or IC chip 301 includes a demodulation circuit 309, a modulation circuit 304, a rectification circuit 305, a microprocessor 306, a memory 307, and a switch 308 for applying load modulation to the antenna 300. Note that the number of memories 307 is not limited to one, and a plurality of memories 307 may be used, such as SRAM, flash memory, ROM, or FRAM (registered trademark).

  A signal transmitted as a radio wave from the reader / writer is converted into an AC electrical signal by electromagnetic induction in the antenna coil 302. The demodulating circuit 309 demodulates the AC electric signal and transmits it to the subsequent microprocessor 306. The rectifier circuit 305 generates a power supply voltage using an AC electrical signal and supplies the power supply voltage to the subsequent microprocessor 306.

  The microprocessor 306 performs various arithmetic processes according to the input signal. The memory 307 stores programs and data used in the microprocessor 306, and can also be used as a work area during arithmetic processing. The signal sent from the microprocessor 306 to the modulation circuit 304 is modulated into an alternating electrical signal. The switch 308 can apply load modulation to the antenna coil 302 in accordance with an AC electrical signal from the modulation circuit 304. The reader / writer can read the signal from the microprocessor 306 as a result of receiving the load modulation applied to the antenna coil 302 by radio waves.

  Note that the wireless tag illustrated in FIG. 11 only illustrates one embodiment of the present invention, and the present invention is not limited to the above structure. The signal transmission method is not limited to the electromagnetic coupling method as shown in FIG. 11, and an electromagnetic induction method, a microwave method, or other transmission methods may be used.

  Next, an example of a functional configuration of the reader / writer used in the present invention will be described with reference to FIG. In FIG. 12, 400 is an antenna coil, 401 is a radio wave interface unit, and 402 is a control unit.

  In the radio wave interface unit 401, the frequency of the AC electrical signal generated in the oscillator 403 can be converted into a specific frequency in the signal source 404 and sent to the modulation circuit 405. A signal converted to a specific frequency is modulated by the modulation circuit 405 in accordance with a signal input from the control unit 402 to the radio wave interface unit 401, amplified by the amplification circuit 406, and input to the antenna coil 400.

  In the radio wave interface unit 401, the radio wave transmitted from the wireless tag is converted into an AC electrical signal in the antenna coil 400, noise is cut in the filter 407, amplified in the amplifier circuit 408, and sent to the demodulator circuit 409. The demodulation circuit 409 demodulates the electrical signal from the amplification circuit 408 and generates a DC electrical signal. The DC electric signal is sent to the control unit 402.

  In the control unit 402, the control circuit 410 controls transmission of a signal to the modulation circuit 405 and reception of a signal from the demodulation circuit 409. The microprocessor 411 performs various arithmetic processing in accordance with a signal from the control circuit 410, a signal input from a higher-level model of the reader / writer via the interface 412, and the like, and the generated various signals are transmitted to the control circuit 410 and the interface. 412 can be sent. The memory 413 stores programs and data used in the microprocessor 411, and can also be used as a work area during arithmetic processing. The power supply unit 414 supplies power to the control unit 402 and the radio wave interface unit 401.

  By the arithmetic processing in the microprocessor 411, position information can be collated, and a signal including the collation result as data can be sent as a signal to a higher-level model.

  Note that the reader / writer illustrated in FIG. 12 only shows one embodiment of the present invention, and the present invention is not limited to the above structure.

  In the present invention, when a non-volatile memory is used for the wireless tag, it is possible to record a product distribution process. By recording the process at the product production stage, it is easier for wholesalers, retailers, and consumers to understand the production area, producer, date of manufacture, processing method, etc., and prevent impersonation. Is possible.

  In this example, a method for specifying a food processing place using the packaging material of the present invention will be described. FIG. 4A shows a food processed in the processing place (here, meat 801 is exemplified). FIG. 4B shows a state in which the meat 801 is packaged with the packaging material 802 of the present invention. In this embodiment, an example is shown in which a film having a film thickness of several tens of μm including a resin such as a wrap is used as a support for the packaging material 802.

  In FIG. 5, the external view of the packaging material 802 of this invention which used the wrap as a support body is shown. A wireless tag 803 is formed on the surface or inside of the packaging material 802. The wireless tags 803 are dispersed in the packaging material 802 to the extent that the packaged object can be identified. Therefore, by packaging the meat 801 using the packaging material 802, a state where the wireless tags 803 are dispersed around the meat 801 can be formed. Note that the position of the wireless tag 803 dispersed around the meat 801 may be surely changed for each meat 801 by changing the packaging method for each meat 801 to be packaged.

  FIG. 4C shows a state where the reader / writer 804 reads the position information of the wireless tag 803 distributed around the meat 801. Note that the wireless tags 803 distributed around the meat 801 often do not exist in the same plane. In such a case, as shown in FIG. 4C, a plurality of reader / writers 804 are used to read position information of the wireless tag 803 from a plurality of directions. Alternatively, the single reader / writer 804 may be scanned in a three-dimensional direction, or the single reader / writer 804 may be fixed and the direction of the meat 801 may be changed.

  The read position information is recorded in the meat processing place together with a specific number, code, and the like attached to the meat 801. When the meat 801 actually goes to the wholesale market and finally reaches the retail store as shown in FIG. 4D, the retail store reads the position information of the wireless tags 803 distributed around the meat 801. Then, based on the specific number and code assigned to the meat 801, the position information recorded in the meat processing place is inquired, and the position information read in the retail store and the position recorded in the meat processing place Match information. If they match, the processed area of the meat 801 is authenticated, and if it does not match, it is not authenticated.

  In the present embodiment, only a method of using the packaging material of the present invention is illustrated. The usage of the packaging material of the present invention is not limited to the form shown in FIG. 4, and any other usage is possible.

  In the present invention, if a memory such as a ROM that cannot rewrite data is formed in the wireless tag, forgery of packaging materials, tags, certificates, banknotes, and securities can be prevented more reliably.

  FIG. 1A shows an example of a check 501 corresponding to the securities of the present invention. In FIG. 1A, a plurality of wireless tags 502 are formed inside a check 501 and the plurality of wireless tags 502 are dispersed to such an extent that the check 501 can be identified. Note that the plurality of wireless tags 502 may be formed inside the check 501 or may be formed so as to be exposed on the surface of the check 501.

  FIG. 1B shows an example of a passport 511 corresponding to the certificate of the present invention. FIG. 1B shows an example in which a passport 511 identification page 513 is provided and a plurality of wireless tags 512 are formed on the page 513. The plurality of wireless tags 512 are dispersed on the page 513 to such an extent that the passport 511 can be identified. Note that the plurality of wireless tags 512 may be formed inside the support body of the page 513 or may be formed so as to be exposed on the surface of the support body of the page 513. In FIG. 1B, an identification page 513 is provided, but a wireless tag 512 may be formed on the cover of the passport 511.

  FIG. 1C shows an example of a gift certificate 521 corresponding to the securities of the present invention. In FIG. 1C, a plurality of wireless tags 522 are formed inside the gift certificate 521, and the plurality of wireless tags 522 are dispersed to such an extent that the gift certificate 521 can be identified. Note that the plurality of wireless tags 522 may be formed inside the gift certificate 521 or may be formed so as to be exposed on the surface of the gift certificate 521.

  A wireless tag using a thin film integrated circuit is inexpensive and small. Therefore, the packaging material of the present invention having a wireless tag using a thin film integrated circuit, a tag, a certificate, a banknote, and a valuable security are suitable for applications that are finally disposed of by consumers. In particular, when used for packaging a product whose price difference of several yen or several tens of yen greatly affects sales, the packaging material having an inexpensive and small wireless tag of the present invention is very useful.

  FIG. 8A shows a lunch box 900 for sale which is packaged with the packaging material 901 of the present invention. As shown in FIG. 8A, the packaging material 901 includes a plurality of wireless tags 902, and the wireless tags 902 are distributed around the lunch box 900. By recording the price of the product in the wireless tag 902, the price of the lunch box 900 can be settled with a register having a function as a reader / writer. Note that when the packaging material 901 of the present invention is used, the wireless tag 902 is distributed around the lunch box 900. Therefore, unlike a register using a barcode, the barcode reader does not have to be pressed against a specific area. The price can be read. Therefore, it is possible to eliminate the complexity at the time of settlement of searching for the barcode reading position.

  FIG. 8B shows a bandage 910 corresponding to one embodiment of the packaging material of the present invention. The adhesive bandage 910 is formed such that a plurality of wireless tags 911 are dispersed.

  FIG. 8C shows a medicinal capsule 920 corresponding to one embodiment of the packaging material of the present invention. If the wireless tag is formed of a material harmless to the human body, the packaging material of the present invention can be used as a medicine capsule 920 that can be taken into the body. The capsule 920 is formed so that a plurality of wireless tags 921 are dispersed. If medicine information is recorded on the wireless tag, medical errors can be prevented.

  When possessing highly convertible securities such as gift certificates or banknotes, there is a risk that the amount of securities or banknotes held by a third party may be read unexpectedly. In this embodiment, a means for restricting reading of the amount of securities and bills will be described.

  FIG. 6A is a block diagram illustrating a memory 1001 and a reader / writer 1002 included in securities or banknotes. The memory 1001 stores an area 1003 in which an ID number for specifying securities or banknotes is stored, an area 1004 in which a password for restricting reading of the ID number is stored, and a request for permission to read the ID number. And an area 1005 in which key signals are stored.

  FIG. 6B is a flowchart showing the flow of signal transmission / reception performed between the memory 1001 in the wireless tag and the reader / writer 1002.

  First, as shown in FIG. 6B, when a password is input to the reader / writer 1002, a key signal including the password as information is generated. The reader / writer 1002 outputs the generated key signal to the wireless tag. The wireless tag receives the key signal and stores the key signal in area 1005. Then, the password stored in advance in the area 1004 is compared with the key signal.

  If the key signal corresponds to a password stored in advance in area 1004, reading of the ID number is permitted. In this case, the wireless tag reads the ID number from the area 1003 and generates a signal including the ID number as data (assumed to be an ID signal). Conversely, if the key signal does not correspond to the password stored in advance in the area 1004, reading of the ID number is not permitted. In this case, a signal including information indicating that it is not permitted as data (assuming that the signal is not permitted) is generated. The generated ID signal or non-permission signal is output to the reader / writer.

  By restricting the reading of securities with high convertibility and the amount of banknotes, crime can be prevented from occurring.

  In this example, a method of using the packaging material of the present invention will be described. As shown in FIG. 7 (A), in the case of a product that has value for the inherent information such as a book, DVD, CD, etc., if all of the inherent information can be disclosed, the value as the product is lowered. There is a problem that it is difficult to grasp the value as a product unless it is disclosed.

  By packaging the product with the packaging material of the present invention and storing a part of the information that the product has in the wireless tag of the packaging material, the customer can grasp the value of the product without lowering the value of the product. I can have you. FIG. 7A shows a state where a book 1101 is packaged with the packaging material 1102 of the present invention. The packaging material 1102 includes a plurality of wireless tags 1103, and the wireless tags 1103 are distributed around the book 1101.

  Then, by adding a function as a reader / writer to a portable information terminal such as a mobile phone, a customer can grasp part of the contents of the book 1101. FIG. 7B illustrates a state in which the content of the book 1101 is displayed on the display portion 1105 of the mobile phone 1104.

  With the above configuration, the customer can grasp the contents of the product without disclosing all the information inherent in the product.

The figure which shows an example of the packaging material of this invention, a tag, a certificate, a banknote, and securities. The flowchart which shows the procedure of identification. The flowchart which shows the procedure of identification. The figure explaining the method of specifying the processed place of foodstuffs using the packaging material of this invention. The external view of the packaging material of this invention which used the wrap as a support body. The figure explaining the means to restrict | limit reading of the amount of securities and the amount of banknotes. The figure explaining the utilization method of the packaging material of this invention. The figure explaining the utilization method of the packaging material of this invention. The figure which shows the preparation methods of the packaging material of this invention, a tag, a certificate, a banknote, and securities. FIG. 9 is a diagram illustrating a method for reading the position of a wireless tag. The figure which shows the structure of a wireless tag. The figure which shows the structure of a reader / writer.

Claims (6)

Having a substrate,
The base material is given a serial number,
A plurality of wireless chips each including an antenna and an integrated circuit electrically connected to the antenna;
The plurality of wireless chips are dispersed without regularity inside or on the surface of the base material,
The serial number is inputted to the reading out position information of the pre-stored plurality of wireless chips as position information as a reference for the verification, the reader / writer,
An article having a wireless chip, wherein the position information of the plurality of wireless chips is read by the reader / writer by an electromagnetic transmission method in order to collate with the reference positional information. Having a substrate,
The base material is given a serial number,
A plurality of wireless chips each including an antenna and an integrated circuit electrically connected to the antenna;
The wireless chip has a memory, and the memory stores information used for identifying an object,
The plurality of wireless chips are dispersed without regularity inside or on the surface of the base material,
The serial number is inputted to the reading out position information of the pre-stored plurality of wireless chips as position information as a reference for the verification, the reader / writer,
The reader / writer reads position information of the plurality of wireless chips for collation with the reference position information and information used for identifying the object by an electromagnetic transmission method. An article having a wireless chip. In claim 1 or claim 2,
An article having a wireless chip, wherein the integrated circuit comprises a thin film transistor. In any one of Claims 1 thru | or 3,
An article having a wireless chip, wherein the substrate has flexibility. In any one of Claims 1 thru | or 4,
An article having a wireless chip, wherein the substrate is paper or plastic. In any one of Claims 1 thru | or 5,
An article having a wireless chip, wherein the article is a packaging material, a tag, a certificate, a bill, or a valuable security.

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