JP2010257159A - Non-contact ic card with display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-contact IC card with display which easily extracts and displays information in a non-contact IC chip even when the non-contact IC chip is not included any terminal for data output when displaying information in the non-contact IC chip in the non-contact IC card with display. <P>SOLUTION: A display module 20 configured of a display element 21, a CPU 26, and a battery 27 or the like includes a communication IC chip 25 having a reader/writer function, and the communication IC chip 25 is configured to read information from a non-contact IC chip 11 by communication in a non-contact state or by a cable, and to display information in the non-contact IC chip 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a non-contact IC card on which an IC chip for non-contact communication and a display unit for displaying information in the chip are mounted.

In recent years, the use of non-contact IC cards has increased dramatically and is used in various fields. Non-contact IC cards are already widely used for purchasing goods and managing entry / exit of transportation facilities because of the convenience of handing over information. In addition, an IC card that has a display function in which a display device is mounted and information recorded on an IC card chip is displayed has appeared.
An IC card with a display function is composed of a thin display element that can be bent and an IC chip that controls the display element. The display element is electronically rewritable and has a memory property (display sustainability). It has a function of maintaining display for a long time without power supply.

Various attempts to mount a display function on a non-contact IC card have been proposed. Patent Document 1 discloses a technique for acquiring display information in a non-contact IC card equipped with a display function. A non-contact type IC card refers to a card having a display function.
Japanese Patent Laid-Open No. 10-154215 JP 2004-102384 A

  However, a normal non-contact IC chip does not have a data output terminal other than non-contact communication, and therefore, it is difficult to obtain data for display from the non-contact IC chip in the IC card. In the case of mounting a display function, a means such as using an IC chip called “dual” having both a contact / non-contact function, or providing a separate contact terminal for the display function has been used.

  Also, in the dual chip, the contact part and the non-contact part in the IC chip cannot operate at the same time and the memory cannot be shared due to the chip specifications, so that the IC card with a display does not have many restrictions. Did not get.

  Accordingly, the present invention provides a non-contact IC with a display that can read data from the non-contact IC chip and display information in the chip even if the card uses a non-contact IC chip that does not have a data output terminal. It is an object to provide a card.

The contactless IC card with display of the present invention includes a contactless IC chip capable of contactless communication,
A display module for displaying information in the non-contact IC chip;
A non-contact IC card with a display comprising:
The display module includes a communication IC chip capable of communicating with the non-contact IC chip in a card.

The communication IC chip is connected to a communication antenna, and communicates with the non-contact IC chip by non-contact communication.
The communication IC chip can communicate with the antenna of the non-contact IC chip by wired communication.

The non-contact IC card having the above function can be realized by using an NFC standard IC chip as the communication IC chip.
The NFC standard is a 13.56 MHz band short-range wireless communication standard defined in ISO18092. The NFC standard IC chip conforms to the standard and functions as a non-contact IC card, a non-contact IC card. It has a reader / writer function that operates as a reader / writer that can communicate with each other, and a terminal function that operates as a communication terminal that can communicate with each other.

  According to the present invention, a non-contact IC card with a display for displaying information possessed by a non-contact IC chip can be configured using a so-called general-purpose product, and can be manufactured at a very low cost.

FIG. 1 is a configuration diagram of a contactless IC card with display according to the present invention.
The non-contact IC card with display 1 has a non-contact IC chip 11 and an antenna 12 inside the card, and the non-contact IC chip 11 communicates with an external reader / writer via the antenna 12, so-called “non-contact”. It functions as an "IC card".

The non-contact IC card with display 1 further includes a display module 20 that reads and displays information held in the non-contact IC chip 11. The display module 20 is for reading out information displayed on the non-contact IC chip 11 and displaying it as visible information. The display module 20 communicates with the non-contact IC chip 11 in addition to the display element 21 and the display driver 22 that drives the display element 21. And a communication IC chip 25 that reads information from the non-contact IC chip 11, a CPU 26 that generates display data from the read information, a memory 27 that stores programs and data, a switch 23 that activates a display operation, and the like.
Further, in the example of FIG. 1, the communication IC chip 25 is connected to the internal communication antenna 28, and the internal communication antenna 28 is electromagnetically coupled to the antenna 12, whereby the communication IC chip 25 and the non-contact IC chip 11 are provided with a display. Communication is possible inside the non-contact IC card 1.

  In FIG. 1, the power for operating the display module 20 is supplied from the battery 24. Considering that a relatively large amount of power is required during operation of the display module and that the display module 20 is mounted on a card. The battery 24 is assumed to be a thin polymer primary battery, but is not limited thereto, and may be a rechargeable secondary battery or a solar battery.

  The non-contact IC card with display 1 is one in which these components are arranged on a circuit board 10, sealed with a base material 5, and processed into a card shape. FIG. 1 shows a state in which the display element 21 and the switch 23 are exposed on the card surface and other parts are concealed among the parts.

FIG. 2 is a functional block diagram of the non-contact IC card with display exemplified in FIG.
In FIG. 2, the communication IC chip 25 is connected to the internal communication antenna 28 and represents a non-contact communication with the non-contact IC chip 11.
Of the components constituting the display module 20, the display element 21 may be a thin display element having flexibility, but it is also an electronic paper having a memory property such as a ferroelectric liquid crystal or a microcapsule electric perpetual system. A display element also called a display element is preferable because the display state can be maintained even when the power is cut off and the battery 24 can be prevented from being consumed. The display driver 22 converts the display information output from the CPU 26 into a signal for driving each pixel of the two-dimensional array of the display elements 21. The switch 23 gives a start-up trigger of the display module 20, and when the CPU 26 receives a trigger from the switch 23, it controls the entire display module 20 in accordance with a program stored in the memory 27.

  The communication IC chip 25 reads information in the non-contact IC chip 11 by non-contact communication via the internal communication antenna 28. That is, the communication IC chip 25 is paired with the internal communication antenna 28 and functions as a reader / writer. For example, if the non-contact IC chip 11 has specifications conforming to ISO14443, the communication IC chip 25 may be a reader / writer chip that supports a protocol conforming to ISO14443. That is, the communication IC chip 25 communicates with the non-contact IC chip 11 conforming to ISO 14443 by an ASK modulation (Amplitude Shift Keying) method at a carrier frequency of 13.56 MHz. As such a chip, there is an NFC standard chip defined in ISO18092. By using this chip, information can be read from the non-contact IC chip 11 inside the card.

  The NFC standard also defines a card function and an inter-terminal communication function in addition to the function as a reader / writer. Therefore, if the communication IC chip 25 is compliant with NFC, for example, the inter-terminal communication function is used for the NFC function. It is possible to communicate with an external terminal equipped with. Therefore, if NFC compliance is used for the communication IC chip 25, not only the information of the non-contact IC chip 11 is read and displayed, but also the information from the outside is directly displayed, and the program and data of the display module are rewritten. Functions can be realized.

FIG. 3 is an operation flowchart at the time of display in the configuration of FIG.
Display of the non-contact IC card 1 with display starts by pressing the switch 23. When the switch 23 is pressed (S10), the CPU is activated (S11), and at the same time, the communication IC chip 25, the display driver 22, the display element 21 and the like are also started up. Subsequently, when the communication IC chip 25 is NFC compliant, the CPU 26 sets the communication IC chip 25 to the reader / writer mode (S12), and starts data acquisition processing (S13).

  The communication IC chip 25 operating in the reader / writer mode (S22) performs a reading operation and receives data from the non-contact IC chip 11 together with the start of communication (S23) (S24). The CPU 26 receives data from the communication IC chip 25 (S25), then proceeds to display processing (S14), and performs processing into display data as necessary. The processing into display data means, for example, that the station name code read from the communication IC chip 25 is converted into a character code when used as a traffic ticket.

  Next, the display data is sent to the display driver 22 (S41), where the display driver 22 generates data that matches the display specifications of the display element 21 (S42). Display data generation means, for example, converting display data represented by a character code into a signal for driving each pixel of the two-dimensional array of display elements 21. The display data is transmitted to the display element 21 (S43) and displayed on the display element 21 (S51). At this time, the operation of each element ends (S15), but if the display element 21 is a memory-type display element, the display state is maintained.

FIG. 4 is a functional block diagram of a non-contact IC card with display in a form different from that in FIG.
As shown in the drawing, in the non-contact IC card 1 with display, the communication IC chip 25 is directly connected to the antenna 12 instead of the internal communication antenna 28. That is, the communication IC chip 25 communicates with the non-contact IC chip 11 in a wired manner and functions as a reader / writer. Even in such wired communication, the communication IC chip 25 communicates with the non-contact IC chip 11 conforming to ISO 14443 by the ASK modulation method at a carrier frequency of 13.56 MHz. Therefore, the operation of the display module 20 at this time is the same as the flow of FIG.

  As described above, the non-contact IC card with display according to the present invention provides a general-purpose non-contact IC chip without providing a terminal for data output in displaying the information of the non-contact IC chip on the card face. Since data can be taken out from the IC chip and a general-purpose communication IC chip for reading out can be used, it can be manufactured at a very low cost.

Configuration diagram of contactless IC card with display Functional block diagram of contactless IC card with display Operation flow diagram during display operation Functional block diagram of another form of contactless IC card with display

DESCRIPTION OF SYMBOLS 1 IC card with a display 5 Base material 10 Circuit board 11 Non-contact IC chip 12 Antenna 20 Display module 21 Display element 22 Display driver 25 Communication IC chip 26 CPU
28 Antenna for internal communication

Claims (4)

A non-contact IC chip capable of non-contact communication;
A display module for displaying information in the non-contact IC chip;
A non-contact IC card with a display comprising:
The non-contact IC card with display, wherein the display module has a communication IC chip capable of communicating with the non-contact IC chip in the card.   The non-contact IC card with display according to claim 1, wherein the communication IC chip can communicate with the non-contact IC chip by non-contact communication.   2. The non-contact IC card with display according to claim 1, wherein the communication IC chip can communicate with an antenna of the non-contact IC chip by wired communication. The non-contact IC card with a display according to claim 1, wherein the communication IC chip is an NFC standard IC chip.

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