KR100980686B1 - Fabrication method for electrical card and the same - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic card using a printing layer having a reflective layer formed on a rear surface of a liquid crystal display.

The electronic card of the present invention comprises a back printing layer having a reflective layer formed thereon; A card body formed on the print layer; An electronic device including a flexible display provided in the card body; And a top printing layer formed on the front surface of the card body.

Another method of manufacturing an electronic card of the present invention comprises the steps of forming a reflective layer on the rear printing layer; Forming a card body on the reflective layer; Forming an electronic device including a flexible body in the card body; And attaching a top printing layer having an IC chip on the card body.

Card, liquid crystal, display, reflective layer

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, when the liquid crystal panel is mounted on the electronic card, by providing a reflective layer on the rear printing layer, the thickness of the liquid crystal panel can be reduced, and the electronic card and manufacturing method conforming to the international card standard can be provided. It is about.

A display device used in a conventional card is a liquid crystal display device. The liquid crystal display device can be applied to various modes. Among them, the reflection mode is used because the internal light source cannot be installed due to the thin structure of the card. The reflective mode liquid crystal display device is manufactured by attaching a reflective plate made of a material having excellent reflection efficiency to a rear polarizer attached to a rear surface of a panel.

However, in general, since the thickness of the reflective layer is very thick, the overall thickness of the liquid crystal display is increased, and when the reflective mode liquid crystal display is mounted on the card, the thickness of the card is also increased.

However, if the thickness of the card is increased, it is out of the thickness standard applied to the card, and the use range is limited, and there is a problem of causing damage to the liquid crystal display in the process of testing the bending of the card.

Accordingly, an object of the present invention is to provide an electronic card and a manufacturing method meeting international standards by forming a reflective layer on a rear printing film attached to a rear surface of a card body, without improving the thickness of the liquid crystal display device.

The object of the present invention is a rear printing layer formed with a reflective layer; A card body formed of a dam and a curable resin on the print layer; Flexible PCB equipped with a microcontroller unit provided in the card body, RFID for contacting input and output information to the card, Film-type speaker for providing the input and output information by voice, Curable polymer for displaying the input and output information A flexible display having a polarizing plate on a cell surface formed by curing a micro liquid crystal cell mixed with a liquid crystal; A battery for supplying power to the flexible display, the film speaker, and the microcontroller unit; And a top printing layer formed on the front surface of the card body.

Another object of the present invention is to form a reflective layer on the back printing layer; Forming a card body on the reflective layer; Forming an electronic device including a flexible body in the card body; And attaching a top printing layer having an IC chip on the card body.

Therefore, the electronic card and the manufacturing method of the present invention have a remarkable and advantageous effect, while using a reflective layer, the thickness of the card does not deviate from the international card standard, and is excellent in durability even when it is bent.

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. The dam 130 having a predetermined width and height formed only on the edge of the rear printing layer 110 is attached onto the curable resin 120.

As the curable resin according to the present invention, any thermosetting or UV curable resin such as epoxy acrylate can 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. On top of the electronic material, a top printing layer with an IC chip is attached.

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. In addition, 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. )). Electronic device excluding the dam 130 with a predetermined force from the top by using the pressure plate 240 to improve the adhesive force between the curable resin 120 and the electronic device 230 applied to the back printing layer 110. The pressure 230 is buried into the dam 130.

Next, the curable resin 120 is dropped into the dam 130 and then flattened. 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 (@ 40) 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 when the current is applied, the acoustic signal is evenly transmitted to the front surface of the piezoelectric film. In this case, 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.

9 is a cross-sectional view of a flexible display mounted to an electronic card according to an embodiment of the present invention.

The flexible display according to the present invention is a reflective liquid crystal display device. The constitution includes a liquid crystal panel 310 formed of micro liquid crystal cells, a front polarizer 320 and a rear polarizer 330 attached to upper and lower portions of the liquid crystal panel 230, and light incident from the outside to the liquid crystal panel 230. It is made of a reflective layer 340 for reflecting. Below the reflective layer 340 is a back printing layer 110 used as the back of the card body. There is a front printing layer 200 forming a card body and covering the liquid crystal panel.

The card body according to the present invention uses a polymer-based film of a transparent material and the front printing layer 200 coats the printed matter in consideration of a design except for a region in which the liquid crystal panel 310 is to be located. The back printing layer 110 is also formed by including a printing layer.

The reflective layer 340 according to the present invention may be formed by coating the rear polarizing plate 330 or the rear printing layer 110. The material used for the reflective layer 340 uses a metal containing aluminum having excellent reflectance, and it is preferable to use semiconductor equipment suitable for forming a thin film such as sputtering or vacuum vapor deposition.

The electronic card according to the present invention can be manufactured using a power in lay method in addition to the process using a dam.

After punching the card body to which the rear printing layer is attached, the residue card according to the present invention can be formed by mounting the electronic device and again performing the upper printing layer.

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 according to the present invention;

2 to 8 is a process flow diagram of the electronic card according to the present invention,

9 is a cross-sectional view of a liquid crystal panel according to the present invention.

* Description of the main parts of the drawings *

110: rear printing layer 120: curable resin

130: dam 140: battery

150: RFID 160: flexible display

170: flexible PCB 180: film-type speaker

181: MCU 190: IC chip

340: reflective layer

Claims (15)

A back printing layer having a reflective layer formed thereon; A card body formed of a dam and a curable resin on the print layer; Flexible PCB equipped with a microcontroller unit provided in the card body, RFID for contacting input and output information to the card, Film-type speaker for providing the input and output information by voice, Curable polymer to display the input and output information A flexible display having a polarizing plate on a cell surface formed by curing a micro liquid crystal cell mixed with a liquid crystal; A battery for supplying power to the flexible display, the film speaker, and the microcontroller unit; And A top printing layer formed on the front of the card body Electronic card comprising a. The method of claim 1, Electronic card of the reflective layer is a metal containing aluminum. delete delete The method of claim 1, The film speaker is an electronic card using a piezoelectric film. The method of claim 1, The top printing layer is an electronic card having an IC chip. The method of claim 1, The top printing layer is an electronic card formed a sound hole. delete delete The method of claim 1, The curable resin is an electronic card comprising a thermosetting resin or a UV curable resin. delete delete delete delete delete

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