KR20080073219A - Fabrication method for electrical card and the same - Google Patents

Abstract

An electronic card and a method for fabricating the same enable a user to recognize visually and auditorily inputted or outputted information via a film type speaker as well as a flexible display unit installed at a card body. An electronic card(100) includes a hardening type resin(120) covered on a back face printing layer(110) where a reflecting layer(340) is formed. A dam(130) with a set width and height is formed at only a circumference of the back face printing layer over the hardening resin. The dam accommodates a battery(140), a flexible display unit(160), a film type speaker(180), a flexible PCB(170) and an RFID module(150). An upper face printing layer to which an IC chip(190) is adhered is positioned at an upper part of the electronic elements. The flexible display unit, the film type speaker, the IC chip and the RFID module are connected to the flexible PCB. The information, inputted or outputted during an activation state caused by a contact type or a non-contact type reader, is displayed on the display unit.

Description

Electronic card and manufacturing method {Fabrication method for electrical card and the same}

The present invention relates to an electronic card, and in more detail, relates to an electronic card and a manufacturing method capable of checking information input and output through the card through a flexible display and a film-type speaker.

The present invention relates to an electronic card, and relates to an IC card having a display function, an audio output function, and an input function.

The most commonly used contact type IC card is a common type of electronic card, which forms a space for mounting a predetermined smart IC chip on the surface of the same plastic card as a credit card, and then has its own arithmetic function. Is a microcontroller unit (MCU, 1k to 64kbytes), an operating system (COS), and an IC chip incorporating an EEPROM as a safe storage area. When an IC card is inserted into an interface device (IFD), the card's contacts come into contact with the contacts of the IFD, thereby activating the card. This type of card may cause electrical shock or damage due to frequent contact of the contact, but it is highly used and is mainly used in a field that needs to execute a specific encryption algorithm in the card.

In addition, an electronic card popularized by the development of an RFID module together with an IC card is an RF card of a contactless type. The RF card is the same as the IC card and the memory device necessary for the information processing function, but communicates with the terminal (IFD) by means of radio frequency signals (electromagnetic induction). Power is supplied and no physical contact is required between the card and the reader.

In addition, as an electronic card that can be used together contact and contactless, hybrid and combination cards are attracting attention in terms of utilization, and their usage is gradually increasing.

Hybrid cards are characterized in that they cannot share their respective internal resources because physically contact and contactless cards exist in a single electronic card. Separate memory is used, two or more separate operating systems can be used, and since there is no COB damage, it can record a large amount of information along with features that can be used semi-permanently. can do.

Combi cards are chemically coupled cards that share parts that can be shared by contact / contactless cards in one electronic card, and have the effect of integrating heterogeneous applications through internal resource sharing. Information can be recorded, and high security features make it almost impossible to forge / false, and one card can be used in many fields.

In recent years, by installing a power supply and a display on the electronic card, it is possible to search the contents stored in the electronic card itself, or to generate and display a password using the MCU with the access control function through the RFID module. It became.

The electronic card equipped with such a display is completed by fixing the IC chip and the display on a plastic substrate and thermocompressing a plurality of plastic substrates on which a space for mounting the IC chip and the display is formed.

However, when manufacturing an electronic circuit module having various sizes and thicknesses by using a conventional card assembly method of punching plastic substrates and applying heat, the process steps are increased, and the thickness of the cards is also increased, so that precise assembly is possible. The disadvantage is that it is impossible. If it is difficult to assemble precisely, there is a disadvantage that it deviates from the international standard, such as not satisfying the flexibility set by the international standard. In particular, heat of 150 ° C. or higher applied in the thermocompression process damages the display embedded in the card.

In addition, since the information received or stored by the conventional electronic card is displayed through a display, there is a disadvantage in that it is not suitable for the elderly and the visually impaired who have poor vision.

Accordingly, an object of the present invention is to provide an electronic card and a manufacturing method capable of confirming information input and output through a card by voice by providing a film type speaker as well as a flexible display in a card body.

The object of the present invention is a card body to which a printing layer is attached; An information input / output interface formed inside the card body; A flexible display for displaying information input and output through the information input / output interface; A film type speaker for outputting information input and output through the information input / output interface as sound; A microcontroller unit for controlling the flexible display and the film type speaker; And a battery for supplying power to the display and the film speaker.

Another object of the present invention is to apply a curable resin to the back printing layer and attaching a dam; Forming an electronic device including a flexible display and a film speaker in the dam, and then injecting a curable resin to form a card body; And attaching a top printing layer having an IC chip on the card body and curing the curable resin.

Therefore, the present invention has the effect of confirming both the visual information and the audio input and output through the card through a flexible display and a film-type speaker.

The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of an electronic card 100 according to the present invention.

In the electronic card 100 of the present invention, the curable resin 120 is coated on the back printing layer 110 on which the reflective layer 340 is formed. On the curable resin 120, a dam 130 having a predetermined width and height formed only at the edge of the rear printing layer 110 is attached.

The curable resin according to the present invention uses heat or UV curable resins, and in the case of thermosetting resins, any one of polymer-based resins may be used.

The height of the dam 130 according to the present invention can be formed to 0.84mm or less, which is the thickness of the card conforming to the international standard, or can be formed more than depending on the field of use. As the material of the dam 130, it is preferable to use a material that does not have heat deformation due to heat applied to cure the curable resin 120.

An electronic device including a battery 140, a flexible display 160, a film type speaker 180, a flexible PCB 170, and an RFID module 150 in the dam 130 attached to the rear printing layer 110. Are mounted. An upper surface printing layer on which the IC chip 190 is attached is attached on the electronic material.

The flexible display 160, the film type speaker 180, the IC chip 190, and the RFID module 150 are connected to the flexible PCB 170 and input and output in the process of being activated by the respective contact and contactless readers. The information is displayed on display 160.

2 to 8 are process flowcharts of the electronic card according to the present invention.

First, the printing layer 110 having the rear reflection layer (not shown) is fixed on the placement plate 220 on which the alignment pin 210 is formed.

The back printing layer 110 according to the present invention may be a PET substrate of several tens of micro-thickness capable of bending and insulating. When the back printing layer 110 is fixed on the placement plate 220, the curable resin 120 is applied to a predetermined thickness. At this time, by adjusting the amount of the curable resin 120, it is preferable that the curable resin 120 does not flow over the dam 130 in the process of attaching the dam 130 in a later step.

When the curable resin 120 is applied, a dam 130 having a predetermined height and width is attached to the rear printing layer 110. The electronic device 230 including the battery 140, the display 160, the flexible PCB 170, the MCU 181, the film-type speaker 180, and the RFID module 150 in the space formed inside the dam 130. Seat. In order to improve the adhesive force between the curable resin 120 and the electronic device 230 applied to the back printing layer 110 in the previous process by using the pressure plate 240 to the dam 130 with a predetermined force from the top. Pressing the electronic device 230 except the buried inside the dam 130.

Next, the curable resin 120 is dropped into the dam 130 and then flattened. The curable resin is injected outside the area where the electronic device is located in the dam, and the cured resin is cured in a later process to be a card body of the electronic card together with the dam.

At this time, since the film-type speaker (not shown) generates the sound by the vibration according to the bending to some extent, it is preferable to drop the curable resin 120 except for the region where the film-type speaker (not shown) is located.

The top printing layer 200 is positioned on the entire surface of the flattened curable resin 120, using the alignment pin 210 formed on the placement plate 220.

According to the present invention, it is preferable to use a film formed of a polymer-based material capable of bending the upper print layer 200, and the IC chip is mounted after perforation in advance. And, it is preferable to form a plurality of sound holes (not shown) so that sound can come out of the film-type speaker.

In order to mount the IC chip at the correct position on the flexible PCB, the top printing layer 200 is formed with alignment holes corresponding to the alignment pins formed in the arrangement. In the process of covering the top printing layer 200, bubbles 240 are generated between the curable resins 120. In order to remove the generated bubbles, the roller 250 is moved from one end of the upper surface printing layer 200 to the other end while pressing at a predetermined pressure. Then, the thermosetting resin 120 accumulated with the bubble 240 is discharged.

When the pressing process using the roller 250 is completed, the curable resin 120 is cured at UV irradiation or at a predetermined temperature. The cured resin becomes a card body together with a dam and is cut to complete a plurality of electronic cards.

RFID module 150 according to the present invention is a contactless information input and output interface that functions to send and receive information in the card to the contactless reader, and the employee's card for security and access control or traffic (prepaid, postpaid traffic card) and Can be used for parking.

The battery supplies power required to operate the microcontroller unit (MCU) 181 and the flexible display 160 connected to the flexible PCB 170.

Battery 140 according to the present invention uses a secondary cell including a photovoltaic cell to provide power for operation of other components, including display 160.

In the flexible display 160 according to the present invention, it is preferable to use a flexible substrate which is not damaged even when the electronic card 100 is bent, and that the liquid crystal is a micro liquid crystal cell LCD formed of micro sized cells.

The manufacturing method of the micro liquid crystal cell according to the present invention is as follows.

First, transparent electrodes are deposited on the upper and lower substrates by sputtering. The upper and lower substrates use plastic substrates. Plastic may be deformed by heat. Therefore, by pre-heating the upper and lower substrates on which the transparent electrode is formed, it is possible to prevent the deformation of the substrate that can occur in a later step.

A patterned transparent electrode is formed by using a photolithography process on the entire surface where the transparent electrode is deposited. Next, the spacer is sprayed on the upper or lower substrate and the encapsulant is applied to the other substrate. The material of the encapsulant is coated using a UV-curable or heat-curable polymer except for the space where the liquid crystal mixture is to be injected.

Next, the spacer and the upper and lower substrates on which the encapsulant is formed are attached to each other, and then the encapsulant is cured by UV exposure or heat treatment to form a semi-LCD cell. Semi-LCD cells can be cut and formed into independent cells.

Next, a liquid crystal micropixel mixture, which is a mixture of a liquid crystal and a curable polymer, is injected into a semi-LCD cell or an independent cell.

The liquid crystal micropixel mixture according to the present invention is formed by mixing a curable polymer having a suitable viscosity and a liquid crystal, followed by stirring. When mixed, the curable polymer surrounds the surface of the liquid crystal. A micro cell having a size of 5 to 200 μm is formed. The curable polymer surrounding the liquid crystal forms a wall while forming a boundary with the curable polymer surrounding the adjacent liquid crystal.

The concentration of the curable polymer affects the wall thickness of the independent cell. For example, the lower the concentration, the narrower the wall thickness of the cell. Controlling the concentration of the curable polymer is possible by temporarily applying heat or UV in the process of mixing the liquid crystal and the curable polymer.

The mixed liquid crystal micropixel mixture is injected into the cell. For more smooth injection, the micro pixel mixture may be heat-treated within the range of 25 ° C. to 75 ° C. and then injected into the cell.

When the independent cell interior is filled with liquid crystal micropixel mixture, the cells are sealed and the curable polymer is cured. A plurality of light sources may be provided around the cell for uniform curing during UV curing. UV or thermosetting polymers act as an alignment layer on the transparent electrode as the curing proceeds. Next, a polarizer (transparent plate, reflective plate, or semi-transparent plate) is attached to the cell surface, and a tab is connected to allow voltage to be applied to the transparent electrode.

The speaker according to the present invention may use paper or a piezoelectric film as the film type speaker 180. In the case of piezoelectric film, the surface is treated by mechanical, physical or chemical method before depositing the electrode.

Mechanical and physical methods are methods using ionic materials such as plasma, ion beam, arc, ion implantation, and media blaster. Chemical methods are chemical and chemical methods using Na complex salt reacting with fluorine compounds. The plating method is used. Special treatment methods, such as mechanical, physical, and chemical methods, increase the roughness of the piezoelectric film surface or change the chemical structure, thereby increasing adhesion to the electrode thin film deposited in a later process.

The conductive material applied to both surfaces of the piezoelectric film is a mixture of one or more of platinum, gold, silver, copper, chromium, nickel, aluminum, ITO, IGO, IZO, AGO, and sulfur compounds, and includes all other common conductive materials. can do. In addition, certain solutions and materials may be added and mixed to increase the adhesion of the conductive material.

 The film-type speaker unit has an even distribution of conductive material in the piezoelectric film, so that an electric signal is evenly transmitted to the front surface of the piezoelectric film when a current is applied, and the piezoelectric film vibrates finely by the evenly transmitted acoustic signal to generate sound. That is, the film-shaped speaker unit vibrates finely by the current evenly transmitted to the film-type speaker unit, thereby converting the electrical signal into sound.

Example 1

10 to 12 is an electronic card according to an embodiment of the present invention can be used for check cards, credit cards, public telephone cards, membership cards and electronic money.

For example, when using a card at a restaurant or pub to make a payment, the date, time and amount of the payment can be displayed and confirmed by voice. If the voice is not desired, the sound button 310 is provided, so that only when the sound button is pressed, the voice can also be confirmed under the control of the MCU (FIG. 10). In addition, when the function button 320 is further provided, information stored for a predetermined period of time may be checked again.

And when withdrawing cash from the ATM, it can be confirmed through the monitor provided in the ATM or the printed receipt, the balance is displayed on the display provided in the electronic card (Fig. 11). In addition, the information received from the ATM or the bank when the withdrawal or deposit money is received from another person, the alarm date, the deposit date, the amount of money and the name of the depositor is displayed on the display (Fig. 12). That is, information input and output in the process of being activated by a contact reader such as a non-contact RF tag and an ATM is displayed on the display 160, and if necessary, when the sound button is pressed, the information is also output from the film-type speaker. You can check it.

<Example 2>

13 is an electronic card according to an embodiment of the present invention.

When used for security purposes, the electronic card includes an RF tag in which personal information such as a user's ID and security level are stored, a security switch 310 and a security program installed on a PCB. If the user enters a specific security zone with an electronic card, the display indicates that the security zone is on the display along with alarm and warning messages. In this case, when the security switch 310 is pressed, a one-time password (OPT; One Time Password) required for access of the security area generated by the MCU is displayed on the display. The user can access the door installed in the secure area using this password.

<Example 3>

As an electronic card according to another embodiment of the present invention, a fingerprint reader (not shown) may be connected to the flexible PCB. When the user touches his or her finger on the fingerprint reader, the MCU compares it with the fingerprint stored in memory and displays a password if it matches the user's fingerprint information. The user can use the displayed password to apply to security areas, such as entering restricted areas.

<Example 4>

14 is an electronic card according to another embodiment of the present invention.

It can be used as a language learner by additionally equipped with an internal memory inside the electronic card and storing language and voice information. When the word is input using the keypad 410, the MCU displays the word stored in the memory on the display, and when the sound button 310 is pressed, the pronunciation of the word may be provided as a voice through the film-type speaker. In addition, a simple conversation phrase including not only a word but also a related word may be selectively displayed using the function key 420, and may be confirmed by voice through a sound button. In addition, it can be used as a calculator when adding a calculation function for addition and subtraction.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

1 is an exploded perspective view of an electronic card of the present invention;

2 to 4 is a process of the electronic card according to an embodiment of the present invention.

2 to 4 is an electronic card according to an embodiment of the present invention.

* Description of the main parts of the drawings *

110: first printing film 120: curable resin

130: dam 140: battery

150: RFID module 160: display

170: flexible PCB 180: film-type speaker

181: MCU 190: IC chip

Claims (20)

A card body to which a print layer is attached; An information input / output interface formed inside the card body; A flexible display for displaying information input and output through the information input / output interface; A film type speaker for outputting information input and output through the information input / output interface as sound; A microcontroller unit for controlling the flexible display and the film type speaker; And Battery for supplying power to the display and the film speaker Electronic card comprising a. The method of claim 1, Electronic card including a sound button for confirming the voice information through the film-type speaker. The method of claim 1, And a memory button for storing the information and a function button for outputting the information stored in the memory to the flexible display. The method of claim 1, Electronic card comprising a fingerprint reader for fingerprint recognition of the user. The method of claim 1, An electronic card comprising a keypad for entering information. The method of claim 5, And a memory for storing information input through the keypad. The method of claim 6, The information card comprises at least one of letters, symbols and numbers. The method of claim 1, The information input and output interface is an electronic card including any one or more of an IC chip, RF tag and magnetic. The method of claim 1, The battery is an electronic card that is a solar cell or a secondary battery. The method of claim 1, The flexible display is an electronic card using an LCD using a micro liquid crystal cell. The method of claim 10, The micro liquid crystal cell is an electronic card formed by mixing the liquid crystal and curable resin and then curing. The method of claim 11, The curable resin is an electronic card formed using a thermosetting or UV curable resin. The method of claim 1, The card body is an electronic card made of a dam and a curable resin. The method of claim 11, The size of the liquid crystal micro cells is 5 to 200㎛ electronic card. The method of claim 1, The printing layer is an electronic card comprising a reflective layer of a metal material. The method of claim 1, The film speaker is an electronic card using a film or paper having a piezoelectric effect. The method of claim 16, An electrode used in the film-type speaker is an electronic card made of any one or more of metal, ITO, IGO, IZO, AGO or sulfur compound. Applying a curable resin to the back printing layer and attaching a dam; Forming an electronic device including a flexible display and a film speaker in the dam, and then injecting a curable resin to form a card body; And Attaching a top printing layer having an IC chip on the card body and curing the curable resin Electronic card manufacturing method comprising a. The method of claim 18, And forming at least one of a sound hole, a keypad, and a sound button on the top printing layer. The method of claim 18, wherein forming the electronic device comprises: Forming a flexible PCB having a memory and a microcontroller unit; Forming an RFID; And Forming a battery for supplying power to the flexible display and the film type speaker; Electronic card manufacturing method comprising a.

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