KR20060083444A - Functional rfid card - Google Patents

Abstract

The present invention relates to a functional RFID ID card, and more particularly, when the RFID card and the terminal are in close proximity to each other, the EL light emitting unit is turned on, and the remaining amount information remaining on the card is displayed for a predetermined time so as to display the backlight of the advertisement surface. The present invention relates to a functional RFID card that maximizes the effect of the advertisement and enables the user to easily check the balance information filled in the RFID card, so that the user can easily recognize the replenishment time of the money.

The present invention includes a RFID tag having a function as a transportation card and storing information such as an amount of money, and a base sheet provided with a loop antenna for generating an induced electromotive force when the device is in close proximity and driving the RFID tag. A power supply sheet having a loop antenna for discharging the DC power when communicating with the terminal and an inverter for converting the DC power induced in the loop antenna to AC is stacked on the upper side, and the output power of the inverter is on the upper side of the power supply sheet. A light emitting sheet having an EL light emitting part which is turned on is stacked, and an upper surface of the light emitting sheet and a lower side of the base sheet are laminated on an RFID ID card in which a protective sheet and a transparent film sheet are formed in this order. Program built-in by receiving remaining amount information output from RFID tag And a remaining amount display device comprising a control unit for converting the numerical information into a numeric information, a liquid crystal display unit for displaying the information output from the control unit as a number, and a battery for supplying driving power to the control unit and the liquid crystal display unit. The power supply sheet, the light emitting sheet, the protective sheet, and the transparent film sheet stacked on the upper surface are characterized in that a through hole is formed to expose the liquid crystal display device.

RF Add, ID Card, Traffic Card, Credit Card, EL Light Emitter, Amount Display

Description

Functional RFID card {Functional RFID card}

Figure 1a is an exploded perspective view of a typical conventional RFID card.

Figure 1b is an exploded perspective view of another conventional RFID card.

2 is an exploded perspective view of a functional RFID card according to the present invention;

3 is a combined perspective view of a functional RFID card according to the present invention.

4 is a block diagram of a residual amount display device of the functional RFID card according to the present invention;

5 is a control flowchart of the remaining amount display device in the functional RFID card according to the present invention.

<Explanation of symbols for main parts of drawing>

10: RFID card 11: base sheet

12 loop antenna 13 RFID tag

14, 15: protective sheet 16: advertising surface

17, 18: transparent film sheet 21: light emitting sheet

22 EL light emitting unit 23 loop antenna

25: inverter 26: power supply sheet

30: remaining amount display device 31: substrate

32 control unit 33 liquid crystal display device

34: battery

The present invention relates to an RFID card (hereinafter referred to as an "RFID card"), and more particularly, when the RFID card and the reader (Reader) close to each other to turn on the EL light emitting unit, the remaining amount information remaining on the card Maximizes the effect of advertisement by displaying the advertisement screen backlight function for a certain time and enables the user to easily check the replenishment time of the money as the user can check the balance information charged to the RFID card. A functional RFID card.

In general, RFID cards transmit and receive product information wirelessly using frequencies. They are already included in subway and bus transportation cards and are widely used in life. They are also called smart tags or smart labels.

The RFID card has the advantage of processing information wirelessly faster than a bar code system that stores information in a line-shaped image, and technology has been developed to the extent that it can read product information wirelessly within a certain distance.

In the above RFID card, when the card holder passes the RFID card on the antenna box of the terminal within the recognition distance, the card terminal processes the speed within 100 ms (0.1 second), so the user does not need to stop and wait for the RFID card processing. It can be the same size as the credit card or can be downsized, so it can be read while holding the RFID card in the wallet or as a jewelry. It also provides convenience, and encrypts the data to prevent fraud and secure it for each RFID card. The built-in serial number is built in, and its uniqueness and security are high, and it has excellent features such as ease of use, providing convenience for card holders.

Such RFID cards are classified into many types as ISO cards of international standards.

That is, ISO 14443A type, ISO 14443B type, and ISO 15693 are RFID card international standard for 13.56 MHz, and the composition of 13.56 MHz tag consists of RFID tag which can store information and loop antenna which is coil around this RFID tag. When the RFID tag is brought within the recognition distance of the terminal, an inductive magnetic field is generated in the loop antenna, which is a coil, to transmit data stored by a program stored in the RFID tag to the terminal.

The 13.56 MHz tag has a difference in recognition distance between the terminal and the tag according to the configuration of the loop antenna, and is mainly used for a traffic card due to the short recognition distance with the terminal.

In addition, the ISO 18000 type card is an international standard of RFID card for 900MHz. The 900MHz tag consists of an RFID tag that can store memory and a UHF antenna that can receive carrier waves from the terminal. Upon receipt of the outgoing carrier, the internal RFID tag reacts to transmit the contents of the memory in the RFID tag to the terminal.

This 900MHz tag is mainly used for logistics, personnel, vehicle access control and time and attendance management because of the long recognition distance from the terminal.

In addition, ISO 11784 type cards are used for animal management as an RFID card international standard for 134 kHz, and ISO 7816 card is an international standard for RFID cards for smart cards. ) Is an electronic card with an integrated circuit (IC) RFID tag embedded with an operating system (COS) and an EEPROM as a secure storage area, and is mainly used for electronic money in the financial sector.

FIG. 1A is a structural diagram of an RFID card having a general 13.56 MHz tag (hereinafter referred to as an 'RFID tag'), in which a loop antenna 12 having a plurality of copper wires arranged around the upper edge of the base sheet 11 is disposed. On one side of the upper surface of the base sheet 11 is connected to the loop antenna 12, a variety of information is stored and an RFID tag 13 for communicating with the terminal is installed.

Upper and lower sides of the base sheet 11 have a function of protecting the loop antenna 12 and the RFID tag 13 installed on the base sheet 11 and the protective sheets 14 and 15 to which advertisements are printed. On the other side of the protective sheets 14 and 15, transparent film sheets 17 and 18 are laminated to protect the advertisement surface 16 printed on the surface of the protective sheets 14 and 15. It is composed.

In the conventional RFID card 10 configured as described above, when a user approaches the RFID card 10 to a terminal (not shown), the frequency of the high frequency band transmitted from the terminal is induced in the loop antenna 12 to generate electromotive force, thereby generating the RFID tag 13. It is supplied to the driving power of).

When driving power is supplied to the RFID tag 13 by the loop antenna 12, various kinds of information are transmitted to the terminal through the loop antenna 12 by the stored program to process the information, and the RFID tag 13 and the terminal are processed. The bidirectional communication is performed through the loop antenna 12.

The conventional conventional RFID card has a problem in that the user cannot confirm whether the communication is correctly performed between the RFID card and the terminal because there is no separate display device when exchanging information with the terminal, resulting in inconvenience in use.

In order to solve the above problems, the Republic of Korea Utility Model Model No. 315249 (Registration Date: 2003.06.27) installed a light emitting diode (LED) in parallel between the RFID tag 13 and the loop antenna 12, RFID tag ( 13) and the terminal by the organic electromotive force generated in the loop antenna 12 when communicating with each other to light up the light emitting diode to have a backlight function of the advertising surface 16 printed on the protective layer 14 on the advertising surface 16. It is proposed to raise the advertising effect described.

In this conventional registered utility model No. 315249, a light emitting diode having a backlight function is connected in parallel with an RFID tag 13, so that the electromotive force generated through the loop antenna 12 is absorbed and consumed by a portion of the light emitting diode when communicating with the terminal. Since the malfunction occurs due to the unstable power supply to the RFID tag 13, there is a problem that cannot be practically applied, and the light of the light emitting diode is limited, so that light such as an optical fiber or glass fiber is compensated for. There is a problem that the material to diffuse the need for the overall structure is complicated.

In addition, in order to supplement the above-mentioned problems of the prior art, the applicant of the RFID card of Patent No. 568996 (Registration Date: 2006.04.03), the EL light emitting unit 22 using the electroluminescence phenomenon as shown in FIG. When the RFID card 10 and the terminal are in close proximity to each other by separately installing the light emitting sheet 21 and the power supply sheet 26 for supplying power to the EL light emitting unit 22, the operation of the RFID tag 13 is performed. Irrespective of, the front surface of the EL light emitting unit 22 is emitted by the power supplied from the power supply sheet 26 to maximize the effect of the advertisement due to widening the area of the light, while the user is the EL light emitting unit ( By the lighting of 22), communication between the RFID card 10 and the terminal can be visually confirmed.

However, in the applicant's patent No. 568996 as described above, it is possible to maximize the confirmation of the communication status and the advertisement effect by lighting the EL light emitting unit, but when the communication is made between the RFID card and the terminal, various information recorded in the RFID tag in the terminal Appears, but is not displayed on the RFID card, causing the inconvenience of not knowing the exact time of replenishment because the user cannot confirm the information including the remaining amount of money remaining on the current RFID card.

In particular, in order to replace bus, subway, and taxi fares, which are recently used for various means of transportation, as cards instead of cash, frequent use of a transportation card, which is a type of RFID card with a 13.56 MHz tag, is frequently used. It should be done, but the user is unable to check the amount accumulated in the transportation card, so many problems occur, such as being in a difficult situation by passing the replenishment time.

The present invention is linked to the RFID tag in the RFID card is installed with a light emitting sheet equipped with EL light emitting unit using an electroluminescence phenomenon, and a power supply sheet for supplying power to the EL light emitting unit to solve the above problems. The built-in remaining amount display device allows the remaining amount information to be displayed for a certain period of time so that the remaining amount of information can be displayed for a certain period of time, maximizing the advertising effect by the backlight function on the advertising surface and allowing the user to charge the RFID card. It is a technical task to increase the reliability of the RFID card by making it possible to easily recognize the replenishment time of the amount, as it is possible to check the remaining amount of information.

The present invention includes a RFID tag having a function as a transportation card and storing information such as an amount of money, and a base sheet provided with a loop antenna for generating an induced electromotive force when the device is in close proximity and driving the RFID tag. A power supply sheet having a loop antenna for discharging the DC power when communicating with the terminal and an inverter for converting the DC power induced in the loop antenna to AC is stacked on the upper side, and the output power of the inverter is on the upper side of the power supply sheet. A light emitting sheet having an EL light emitting part which is turned on is stacked, and an upper surface of the light emitting sheet and a lower side of the base sheet are laminated on an RFID ID card in which a protective sheet and a transparent film sheet are formed in this order. Program built-in by receiving remaining amount information output from RFID tag And a remaining amount display device comprising a control unit for converting the numerical information into a numeric information, a liquid crystal display unit for displaying the information output from the control unit as a number, and a battery for supplying driving power to the control unit and the liquid crystal display unit. The power supply sheet, the light emitting sheet, the protective sheet, and the transparent film sheet stacked on the upper surface may be formed with a through hole for exposing the liquid crystal display device.

Hereinafter, the functional RFID card according to the present invention will be described in detail with reference to FIGS. 2 to 5.

2 is an exploded perspective view of a functional RFID card according to the present invention, FIG. 3 is a combined perspective view of a functional RFID card according to the present invention, and FIG. 4 is a block diagram of a residual amount display device of the functional RFID card according to the present invention. 5 is a control flow chart of the remaining amount display device of the functional RFID card according to the present invention, the loop antenna 12 is disposed around the upper surface of the base sheet 11, and is disposed at both ends of the loop antenna 12. Various information is stored and the RFID tag 13 which communicates with a terminal is connected.

On the other side of the upper surface of the base sheet 11, a residual amount display device 30 is installed, which is connected to the RFID tag 13 and displays the information such as the remaining amount of the card when the RFID card 10 is in close proximity to the terminal.

 In addition, a loop antenna 23 is installed around the outer surface of the upper surface, and both ends of the loop antenna 23 are connected to an inverter 25 for converting DC power induced by the loop antenna 23 into an alternating current. The power supply sheet 26 is stacked on the base sheet 11.

On the upper side of the power supply sheet 26, a light emitting sheet 21 provided with an EL light emitting unit 22 is stacked, and the inverter 25 and the EL light emitting unit 22 are electrically connected to each other.

On the upper side of the light emitting sheet 21 and the lower side of the base sheet 11, protective sheets 14 and 15 having a predetermined strength and functioning as a protective plate and having an advertisement surface 16 are provided, and the protective sheet 14 On the other side of the) 15, the transparent film sheets 17 and 18 for protecting the advertisement surface 16 printed on the surface of the protective sheets 14 and 15 are stacked.

In addition, the power supply sheet 26, the light emitting sheet 21, the protective sheet 14, and the transparent film sheet 17 stacked on the upper surface of the base sheet 11 are liquid crystal display devices of the remaining amount display device 30. Through holes 26a, 21a, 14a and 17a are formed to expose 33.

Here, the EL light emitting unit 22 applies a phosphor to be a light emitting sheet on a transparent organic film or a linear structure, and when an alternating voltage is applied, the electric field causes the phosphor to quickly charge and discharge, and the electrons in this circulation process The EL (electro luminescence) phenomenon, in which the movement of light is visible, is used. A fluorescent layer and an insulating layer are sequentially formed between the transparent conductive film and the back electrode to form a light emitting sheet, and an insulating layer to protect the light emitting sheet. A planar surface light-emitting body having a structure in which a carbon protective film is inserted between and a back electrode.

When the EL light emitting unit 22 applies an AC voltage, the electrons are accelerated by the high electric field in the phosphor, and the excited state is obtained when the high energy electrons are generated. This excitation state is obtained whenever the direction of the electric field changes. When the AC voltage is applied, it emits twice during one cycle.

That is, when the voltage flows between the transparent electrode and the back electrode and exceeds the threshold voltage, electrons existing at one interface between the insulator and the phosphor are tunneled into the phosphor, thereby obtaining a large kinetic energy from an electric field inside the phosphor. .

These high energy electrons collide with light emitting atoms injected into the phosphor to excite the electrons of the light emitting atoms, and the excited electrons fall back to a low level to generate light. After collision, electrons are trapped at the other interface, and when a signal of opposite polarity is applied, electrons already captured at the interface are tunneled back into the phosphor to generate light.

4 is a block diagram of a residual amount display device 30 in the functional RFID card 10 according to the present invention, and FIG. 5 is a diagram of a residual amount display device 30 in the functional RFID card 10 according to the present invention. As a control flow chart, the remaining amount display device 30 is installed on one side of an upper portion of the substrate 31 to receive the remaining amount information output from the RFID tag 13, and the numerical value for a predetermined time by the control program shown in FIG. A control unit 32 for converting a signal to output a signal, a liquid crystal display unit 33 installed on the other side of the substrate 31 to display the remaining amount information output from the control unit 32 as a number, and the substrate ( 31) the battery 34 is installed at one end and supplies a driving power to the controller 32 and the liquid crystal display 33.

Here, the remaining amount display device 30 for receiving a specific input signal and displaying information such as the amount of money is formed in one assembly by miniaturizing the control unit 32, the liquid crystal display device 33, and the battery 34. As the known technology, detailed configuration and operation description are omitted.

In addition, the RFID tag 24 and the remaining amount display device 30 are embedded in the base sheet 11, and considering the thicknesses of the substrate 31, the liquid crystal display 33, and the battery 34. The RFID card can be manufactured in a thickness range of 3 to 4 mm, and the control unit 32 has a control program as shown in FIG. 5.

Referring to the operation of the RFID card according to the present invention configured as described above in detail.

First, when the user approaches the RFID card 10 of the present invention to a terminal not shown, the resonance frequency of the high frequency band transmitted from the terminal is induced in the loop antenna 12 installed in the base sheet 11, and thus induced electromotive force by the magnetic field. As the induced electromotive force is supplied to the RFID tag 13 as driving power, various kinds of information are transmitted to the terminal through the loop antenna 12 to process the information by the stored program.

At the same time, when the user approaches the RFID card 10 of the present invention to the terminal, the resonant frequency of the high frequency band transmitted from the terminal is induced in the loop antenna 23 of the power supply sheet 26 to generate induced electromotive force by the magnetic field. As the DC power of the induced electromotive force is supplied to the inverter 25, the DC power is converted into AC and applied to the EL light emitting unit 22 installed in the light emitting sheet 21 to emit light.

The inverter 25 is a device for providing a current to the EL light emitting unit 22, converts DC (direct current) to AC (AC), and the light emitting element of the EL light emitting unit 22 can stably emit light. In particular, by adjusting the voltage and frequency within the operating range of the inverter 25, it is possible to change a variety of brightness, flashing scheme, speed, etc.

As such, when the EL light emitting unit 22 emits light, the advertisement surface 16 of the protective sheet 14 is illuminated from the rear side, thereby maximizing the effect of the advertisement, in particular on each of the loop antennas 12 and 23. By supplying independent power to the RFID tag 13 and EL light emitting unit 22 not only do not affect the operation of each other to perform a stable operation, but also utilize the front surface of the protective sheet 14 as an advertising surface and emit light If the sheet 21 is composed of all EL light emitting unit that the effect of the advertisement can be further increased.

On the other hand, the control unit 32 of the remaining amount display device 30 is in a standby state (step 101) by the driving power supplied from the battery 34, the user is not shown in the terminal of the RFID card of the present invention ( 10) when the terminal and the RFID tag 13 are determined to communicate with each other, receiving data on the remaining amount of money output from the RFID tag 13, and then displaying the data numerically on the liquid crystal display 33. The data can be converted into data (step 103) and displayed on the liquid crystal display 33 (step 104).

The control unit 32 counts the time from the time when the remaining amount information of the RFID card 10 is displayed through the liquid crystal display 33 (step 105), and a predetermined time elapses when the remaining amount information is displayed. If it is determined (step 105), the liquid crystal display 33 is turned off (step 107), and then the system is switched back to the system standby state (step 108) to prevent unnecessary battery 34 from being consumed.

Therefore, the user can visually check the remaining amount of money displayed for a predetermined time on the liquid crystal display 33 of the RFID card 10, so that the user can accurately recognize the charging time of the amount of money.

As described above, the present invention provides a light emitting sheet having an EL light emitting unit using an electroluminescent phenomenon and an RFID card having a power supply sheet for supplying power to the EL light emitting unit. Built-in remaining amount display device to display remaining amount information for a certain period of time, so that the remaining amount information appears for a certain period of time, maximizing the advertising effect by the backlight function on the advertising surface and at the same time the user As it is possible to check the information of the amount of money, it is possible to easily recognize the time of replenishment of the amount of money, which is effective in pursuing user convenience and increasing the reliability of the RFID card.

Claims (1)

An RFID tag 13 having a function as a transportation card and storing information such as an amount of money, and a base sheet 11 having a loop antenna 12 for generating an induced electromotive force when the device is in close proximity and driving the RFID tag 13. And a loop antenna 23 for inducing DC power when communicating with the terminal, and an inverter 25 for converting DC power induced in the loop antenna 23 to AC. Is installed, the power supply sheet 26 is stacked, the light emitting sheet 21 with the EL light emitting unit 22 which is lit by the output power of the inverter 25 is stacked on the upper side of the power supply sheet 26 In the ID card on which the light emitting sheet 21 and the base sheet 11 are disposed, the protective sheets 14 and 15 and the transparent film sheets 17 and 18 on which the advertisement surface 16 is formed are sequentially stacked. , On one side of the upper surface of the base sheet 11, a control unit 32 which receives the remaining amount information output from the RFID tag 13 and converts it into numerical information by an embedded program, and information output from the control unit 32. The remaining amount display device 30 is provided which consists of a liquid crystal display unit 33 displayed by numbers and a battery 34 for supplying driving power to the control unit 32 and the liquid crystal display unit 33. A through hole 26a for exposing the liquid crystal display device 33 to the power supply sheet 26, the light emitting sheet 21, the protective sheet 14, and the transparent film sheet 17 stacked on the upper surface of the base sheet 11. (A) 21a, 14a, 17a is a functional RFID ID card.

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