Non-contact or hybrid contact/non-contact card with micro-chip and increased resistance of electronic module

FIELD: engineering of non-contact or hybrid contact/non-contact cards with microchips.

SUBSTANCE: card with microchip contains antenna positioned on substrate of fibrous material like paper, two body plates of card on each side of substrate, consisting of at least one layer of plastic, having low melting temperature, and electronic module, containing microchip connected to antenna, while card is formed by substrate of antenna and two body plates, connected by lamination welding by heating under pressure, substrate of fibrous material contains at least one groove so that plastic layers of body plates of card merge during lamination, and this groove forms welding seam between body plates of card.

EFFECT: increased resistance of electronic module.

9 cl, 6 dwg

 

The technical field

The present invention relates to a contactless or hybrid contact/contactless cards with microchips and, in particular, this type of map is resistant electronic module.

Prior art

Contactless card chip is a system that is increasingly used in various fields. For example, transport contactless card chip was designed as a carrying means. The same applies to the use of the card as an electronic wallet. Numerous companies have developed a system of identification of its staff using contactless cards with microchips.

The exchange of information between a contactless card and a corresponding reading device by remote electromagnetic interaction between the antenna placed in the map, and the antenna in the reader. To create, store, and process information inside the card put the chip located on the substrate, where it is connected with the antenna, made by way of screen printing.

There are also hybrid contact/contactless cards with microchips that can act as a classic card with a chip or contactless cards with microchips. Such the arts contain an electronic module, consisting of a chip with double-sided circuit Board, in which the contacting surface of one side slightly protrude above the surface of one of the faces of the housing of the card.

There are several ways of making a contactless or hybrid cards with microchips. One of the first types is the manufacturer of monoblock card, in which the substrate of the antenna, made of plastic, is placed between two layers of plastic (polyvinyl chloride-PVC, polyester-PET, polycarbonate (PC, Acrylonitrile-butadiene-styren (ABC)), forming the upper and lower hull plate card, United among themselves by means of heat sealing lamination by heating under pressure. Module connected to the antenna using a conductive adhesive, which allows to establish ohmic contact.

Map of this type has a high rigidity. Consequently, since the map is subjected to mechanical stress such as bending and/or twisting, mechanical loads are directly transmitted to the chip, in particular in the point of the adhesive, where the connection chip/antenna or module/antenna. These mechanical loads intentionally or unintentionally can cause the rupture of connections, and therefore, lead to failure of the card, but so that it will not be noticeable from the outside.

This is predstavljaet a main disadvantage of contactless or hybrid cards with microchips. For an unscrupulous user quite easily damage the card by intensive repetitive flexion so that it will not be noticeable from the outside. When it comes to the map, sold with credit phone cards, cards for public transport, cards for payment at points of use toll roads) and when this credit is exhausted or nearly exhausted, a malicious user can change the map or to recover the loan providing organization, it is impossible to prove that the intent of deception.

To partially resolve this main drawback, it was proposed to place the antenna, is made by way of screen printing on a substrate made of fibrous material such as paper, is placed between the two hull plates maps, which consist of at least one layer of plastic. This method is disclosed in patent applications US 2001/006194, 2001/012682, 2001/002035. Stage lamination by heating under pressure enables welding between different layers, with the molten polyvinyl chloride (PVC) is one of the hull plates of the card fixes the ink for silk screen printing of the antenna.

A method of manufacturing a card with a chip by laminating disclosed in patent US 4450024.

Paper backing them who has the advantage that bending violated the laminated layer in the place where it was applied load at bending, which allows clearly to state that the violation was intentional, as the map is stored traces from bending. When you bend folds appear in the corners of the map, which transmits mechanical loads to the center of the map, as described in patent application US 2001/006194. As a result of intentional damage to the card is the bundle of paper on the map are traces of flexion.

However, the card of this type has the disadvantage that reduces the resistance of the electronic module. In fact, if the advantage of the paper substrate of the antenna is that it retains the "memory" bending the map, it does not ensure sufficient internal cohesion, which would continue to perform numerous bending, breaking the laminated layer of paper under one or more adhesive connections, fixing the module on the map and then vertically in the least thickest part of Cabinet plates maps that will lead subsequently to detach the electronic module and the antenna.

A brief statement of the substance of the invention

The present invention is the creation of a hybrid card with chip with the substrate of the antenna, made of fibrous the th material such as paper, for increased resistance module for undocking and separation under intense curl.

The problem is solved by creating a card with a chip that contains the antenna located on a substrate made of fibrous material such as paper, two hull plates located on each side of the substrate, each of which consists of at least one layer of plastic material having a low melting point, and the electronic module containing the chip connected to the antenna and is placed in a recess cut in one of the above hull plates of the card and the antenna substrate, the complex formed by the substrate of the antenna and two hull plates, welded by a method of laminating by heating under pressure. The substrate of fibrous material contains at least one groove located so that the grooves are aligned with the adhesive sections to attach the module to the hull plates, so that the plastic layers of hull plates are close together in the area of the groove in the laminating process, filling the groove and forming a weld seam between the hull plates of the map, which increases the resistance of the module.

Brief description of drawings

The invention is further explained in the description of the preferred variant of embodiment, with reference the and accompanying drawings, on which:

figure 1 depicts the antenna substrate contact/contactless hybrid card with chip according to the invention;

figure 2 is a section along the line A-a in figure 1 cards with chip according to the invention;

figure 3 - location of grooves in the substrate of the antenna module, front view according to the invention.

A detailed description of the preferred embodiment variants of the invention

Hybrid contact/contactless card chip contains an electronic module comprising an electronic chip and bilateral schemes, the surface of which extends slightly above the face of the map. The antenna of the card, stamped and recorded by the screen printing method on a substrate of fibrous material 12 contains a given number of windings 18 of the conductive ink and the two connecting contact 11 and 13 are used for connection to the chip, i.e. to the electronic module. The substrate of the antenna contains two slots 14 and 16, which serve, preferably, after the screen printing of the antenna. Detailed description of the form of grooves, as well as their placement is shown below.

Map is the thickness of several layers. According to a preferred variant embodiment of the substrate of the antenna 12 (figure 2) is placed between the lower Cabinet plate cards, consisting of layers 22 and 23, and the upper Cabinet plate consisting of layers 24 and 25. Niiniaai upper hull plate is made of plastic-type polyvinyl chloride (PVC), or polyester (PET, PETG), or polycarbonate (PC)or Acrylonitrile-butadiene-styrene (ABS). According to a preferred variant embodiment of the hull plates of a card made of polyvinyl chloride (PVC), each of the plates has an outer layer made of hard polyvinyl chloride (PVC) 22 or 24 and the inner layer of soft polyvinyl chloride (PVC) 23 or 25. Polyvinyl chloride comprising the soft layer, in contact with the antenna has a point Vicat (the temperature above which the polyvinyl chloride passes from the solid state to retinopathia state), the value of which is lower than for point Vicat layer consisting of rigid polyvinyl chloride.

The Assembly of the layers constituting the map, perform a method of laminating by heating to a certain temperature under pressure. Under the combined influence of heat and pressure, the outer layer of polyvinyl chloride only softens, while the inner layer consisting of polyvinyl chloride with a lower value point Vicat, melts. Molten polyvinyl chloride layer 25 locks the antenna in its mass and merges with the molten layer 23 through the slots 14 and 16, made previously in the substrate 12 of the antenna. This created two welding seam between the lower and upper hull plates maps by merging the two inner layers 23 and 25.

After Assembly of the various layers composing the x map, it cut deepening, usually by way of milling, to place the electronic module comprising an electronic chip 26 and double sided printed circuit Board 10. The recess has such a shape that its Central portion was smaller to accommodate the chip 26, and the outer part, made in the thickness of the layer 22 of Cabinet plate map was larger to accommodate bilateral printed circuit Board.

The electronic module is placed in the recess and fixed with glue in the largest part of the recess. Two adhesive contact 34 and 36 types of cyanoacrylate bilateral connect the circuit Board of the electronic module with an outer layer 22 of Cabinet plates and maps are superimposed on the slots 14 and 16, are made in advance in the substrate 12 of the antenna. Adhesive contacts 34 and 36 are arranged vertically in the place where the thickness of the Cabinet plate card 22 is the smallest, and placed in the vertical direction in the slots 14 and 16, mounted with polyvinyl chloride and forming two welding seam between the upper and lower hull plates of the map, increasing the resistance of the module, located on the substrate.

The connection circuit with the contacts of the antenna 11 and 13 provide using a conductive adhesive layer (not shown), applied prior to placing the electronic module in the recess.

The grooves 14 and 16 (figure 3) is placed on the substrate of the antenna with one and on the other side of the connecting contacts 11 and 13 and, preferably, in the centre of the face 30 of the bilateral scheme 10, which is glued on the map and are shown in grey tone. However, the grooves may be slightly offset relative to the position shown, while being superimposed on the verge of 30 the electronic module that is not beyond the scope of the invention. In all cases the width of the grooves is not very important. The surface area of the grooves shall not exceed the square glued faces 30 of the module to completely fill the grooves molten polyvinyl chloride layers 23 and 25 during lamination hull plates together. Electronic module symmetrically placed on either side of the connecting contacts 11 and 13 and the grooves, preferably, should be symmetrical with respect to the connecting contacts 11 and 13 and, preferably, identical forms. In addition, to improve the stability of the module on the map, the outer contour of the grooves 14 and 16 should adhere as closely as possible to the external contours of adhesive contacts 34 and 36.

For hybrid card slots should not have corners for ease and speed up the execution of the slots. Indeed, the slits in the corners can create stress points of the paper, which will be behind the substrate, while the slits are rounded not create problems of this kind. In addition, when the Cabinet record cards printed by the press, the slots are the camping on laminated layer at the convergence point print located above the grooves, resulting in a darker color in the locations of the grooves. In the aesthetic perception of a rounded form, which is revealed through the transparent layer of polyvinyl chloride, better than shape having corners.

Although it would be preferable to arrange the two slots on either side of the module to increase its resistance, as described above, can be placed in one groove or more than two grooves on each side.

1. Card with a chip that contains an antenna (18 or 42)located on the substrate (12 or 38) of fibrous material such as paper, two hull plates of the card on each side of the substrate, each of which consists of at least one layer of plastic material having a low melting point, and an electronic module (26 or 40), placed in a recess cut in one of the above hull plates of the card and the antenna substrate, while the entire card with the chip connected to the antenna formed by the antenna substrate and the two hull plates, welded together to other lamination by heating under pressure, characterized in that the substrate of fibrous material contains grooves (14, 16 or 48, 50)that are located so that they are on top of the adhesive contacts (34, 36), through which the module is attached to another Cabinet record card, this is made of plastic layers (23, 25 or 54, 58) hull plates maps are in close contact through these slots in the lamination, and the grooves filled thereby form a weld seam between the hull plates maps and reinforce the connection module.

2. Card according to claim 1, characterized in that the outer contour of one of the groove or multiple grooves (14, 16) has(have) the same shape as the outer contour of one of the adhesive contact or more adhesive contacts (34, 36).

3. Card according to claim 2, characterized in that the chip electronic module (26) is connected to the antenna by means of two connecting pins (11, 13)located on the antenna substrate (12), the substrate contains two slots located on either side of the connecting contacts.

4. Card according to claim 3, characterized in that the grooves (14, 16) have an identical shape and are disposed symmetrically with respect to the connecting contacts (11, 13).

5. Card according to claim 4, characterized in that the grooves (14, 16) have a rounded shape.

6. Card according to claim 1, characterized in that it is a card of the contactless type, in which the electronic module (40) is placed in the recess in the substrate of the antenna to perform lamination by heating under pressure and fixed on one hull plates maps (54) using non-conductive adhesive layer (60).

7. Card according to claim 6, ex the different topics that chip electronic module (40) is connected with the antenna (42) by means of two connecting pins (62, 64), which is the ohmic contacts without conductive adhesive, which is formed by flattening and merging layers hull plates of the card (54, 58)through the slots (48, 50), forming welds after lamination by heat.

8. Card according to any one of p or 7, characterized in that the substrate of the antenna (38) contains two slots (48, 50)located on either side of the electronic module (40).

9. Card of claim 8, characterized in that the grooves (48, 50) are symmetric with respect to the electronic module (40).

Priority items:

14.09.2001 - claims 1 to 5;

20.02.2002 - PP-9.



 

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