Metal Card

Abstract

A metal card having RF communication capabilities comprises: a front layer formed in the form of a sheet of metal material to form the front of the card; a ferrite layer formed in the form of a sheet of ferrite material and laminated on the rear surface of the front layer; an inlay layer laminated on the rear surface of the ferrite layer and including a sheet layer constituting an outer shape and an antenna pattern formed inside the sheet layer; a rear layer formed on the rear surface of the inlay layer and including a metal region formed in the form of a sheet of metal material and a magnetic region formed in the form of a magnetic strip, and including a metal region formed in the form of a sheet of metal material and a magnetic region formed in the form of a magnetic strip; and an electronic chip electrically connected to the antenna pattern; wherein at least a portion of the antenna pattern is formed in a region corresponding to the magnetic region. By providing a metal card, the advantage is that the phenomenon of interference with the generation of induced current by the metal region can be minimized, while simultaneously minimizing the reduction in consumer satisfaction, such as aesthetics and weight, which can be obtained from a metal card.

Description

Technology Field

[0001] The present invention relates to a metal card, and more specifically, to a metal card having an exterior formed of a metal material, which enables contactless RF communication through an electronic chip driven by an induced current generated in an antenna pattern upon approach of a card reader. Background Technology

[0002] A credit card is a type of consumer credit that serves as a payment method allowing a member who has entered into a contract with a card issuer to make purchases of goods or services at a merchant without spending cash by presenting the card issued by the issuer and signing the receipt. In this process, the payment is automatically transferred from the member's deposit account to the merchant's account via the card issuer's bank a certain period after the sale, and the merchant bears a prescribed transaction fee for this transfer.

[0003] As such, credit card usage has increased rapidly due to the convenience of not having to carry cash, the advantage of payment timing where payment is settled after a certain period following purchase, and various benefits from credit card issuers, and it can be said that the use of credit cards has become very common recently.

[0004] As such, credit cards, which are widely used as a means of payment in commercial transactions, are designed to store user information on a magnetic strip called a magnetic strip on the back of the card. The magnetic strip contains information such as the user's card number, expiration date, service code, PVV (PIN Verification Value, PIN stands for Personal Identification Number), and CVV (Card Verification Value). The card information is read through a card reader and transmitted to the relevant card company via a communication network, and the relevant card company authenticates the use of the card.

[0005] Furthermore, IC cards with embedded IC chips have recently become very common. These IC chips possess their own computing capabilities and can not only store various information about the credit card but also be equipped with a communication module. Through an IC chip equipped with such a communication module, the credit card can perform RF (Radio-Frequency Communication) functions.

[0006] Meanwhile, as interest in the appearance of credit cards has recently increased, the number of metal cards is on the rise to meet consumer demands and promote premium quality. However, manufacturing credit cards from metal in this manner can lead to electromagnetic interference, which may consequently cause problems such as interference with the RF communication functions of IC chips.

[0007] Accordingly, research is currently being conducted on metal card structures capable of effectively performing RF communication functions and methods for manufacturing the same through various methods.

[0008] To solve the above problems, the applicant has proposed a double-sided metal card in Korean Registered Patent No. 10-2749768 in which an antenna sheet can communicate normally with an external card terminal through a slit in the rear metal sheet.

[0009] However, concerns have been raised that such slits detract from the aesthetic appeal of the card's appearance, thereby lowering consumer satisfaction. Prior art literature

[0010] Republic of Korea Registered Patent No. 10-2749768 (2025.01.07) The problem to be solved

[0011] The present invention aims to solve the aforementioned problems by providing a metal card formed of a metal material that has a suitable weight and appearance without compromising the aesthetic appeal of the card's exterior, and is capable of smooth communication with an external card terminal. means of solving the problem

[0012] A metal card according to the present invention is a metal card having an RF communication function, comprising: a front layer formed in the form of a sheet of metal material to form the front of the card; a ferrite layer formed in the form of a sheet of ferrite material and laminated on the rear surface of the front layer; an inlay layer laminated on the rear surface of the ferrite layer and including a sheet layer constituting an outer shape and an antenna pattern formed inside the sheet layer; a rear layer formed on the rear surface of the inlay layer and including a metal region formed in the form of a sheet of metal material and a magnetic region formed in the form of a magnetic strip, and comprising a metal region formed in the form of a sheet of metal material and a magnetic region formed in the form of a magnetic strip, and comprising an electronic chip electrically connected to the antenna pattern; wherein at least a portion of the antenna pattern may be formed in a region corresponding to the magnetic region.

[0013] In the metal card according to the present invention, the front layer has a first chip insertion hole for mounting the electronic chip at a predetermined position, and the ferrite layer has a second chip insertion hole at a position corresponding to the first chip insertion hole, and the electronic chip is inserted into the first chip insertion hole and the second chip insertion hole and is electrically connected to the antenna pattern, and the antenna pattern can be formed by winding it several times along the periphery of the electronic chip.

[0014] In the metal card according to the present invention, the size of the metal area may be larger than the size of the magnetic area.

[0015] In the metal card according to the present invention, the size of the magnetic area may be 1 / 3 or less of the total size of the back layer.

[0016] In the metal card according to the present invention, a part of the antenna pattern may belong to a region corresponding to the metal region, and the remaining part of the antenna pattern may belong to a region corresponding to the magnetic region.

[0017] In the metal card according to the present invention, the back layer is divided into a magnetic area located on one side in the width direction and a metal area located on the other side in the width direction based on a boundary line formed as a straight line along the length direction, and the ratio of the width direction distance (L1) from the boundary line between the metal area and the magnetic area to one end of the antenna pattern located in the magnetic area, and the width direction distance (L2) from the boundary line between the metal area and the magnetic area to the other end of the antenna pattern located in the metal area, L1:L2 = 1:0.5 to 1:1.5.

[0018] In the metal card according to the present invention, the ratio of the widthwise distance (L1) from the boundary line between the metal area and the magnetic area to one end of the antenna pattern located in the magnetic area, and the widthwise (y) distance (L2) from the boundary line between the metal area and the magnetic area to the other end of the antenna pattern located in the metal area, L1:L2 = 1:0.8 to 1:1.

[0019] In the metal card according to the present invention, the metal area is divided and located at one end in the width direction and at the other end in the width direction, and the magnetic area is located between the metal areas divided at both sides in the width direction, and the portion at one end in the width direction of the metal area may be smaller than the portion at the other end in the width direction.

[0020] In the metal card according to the present invention, the antenna pattern belongs only to the metal area located in one direction among the metal areas divided into one end side in the width direction and the other end side in the width direction based on the magnetic area, and may belong to the relatively larger area among the two metal areas. Effects of the invention

[0021] According to the present invention, the back layer is divided into a metal area and a magnetic area, and a part of the antenna pattern belongs to the area corresponding to the metal area, and the remaining part of the antenna pattern belongs to the area corresponding to the magnetic area, thereby minimizing the phenomenon of interference with the generation of induced current by the metal area, and at the same time, minimizing the reduction in consumer satisfaction, such as aesthetics and weight, which can be obtained from a metal card. Brief explanation of the drawing

[0022] FIG. 1 is a front perspective view of a metal card according to one embodiment of the present invention. FIG. 2 is a front exploded perspective view of an embodiment of the present invention. FIG. 3 is a rear perspective view of a metal card according to one embodiment of the present invention. FIG. 4 is a schematic cross-sectional view illustrating the cross-section corresponding to A-A' in FIG. 1. FIG. 5 is a schematic cross-sectional view showing the cross-section corresponding to B-B' in FIG. 1. Figure 6 is a schematic diagram illustrating the relationship between the back layer and the antenna pattern. FIG. 7 is a front exploded perspective view of another embodiment of the present invention. FIG. 8 is a rear perspective view of a metal card according to another embodiment of the present invention. Specific details for implementing the invention

[0023] Specific embodiments of the present invention will be described in detail below with reference to the drawings. However, the concept of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the concept of the present invention may easily propose other inventions that are inferior or other embodiments included within the scope of the concept of the present invention by adding, changing, or deleting other components within the same scope of the concept, and such are also to be considered to be included within the scope of the concept of the present invention.

[0024] Additionally, functional components within the same scope of the same concept shown in the drawings of the embodiments are described using the same reference numerals.

[0025] FIG. 1 is a front perspective view of a metal card (100) according to one embodiment of the present invention, and FIG. 2 is a front exploded perspective view of a metal card (100) according to one embodiment of the present invention. FIG. 2 schematically explodes and illustrates the configuration shown in FIG. 1. FIG. 3 is a rear perspective view of a metal card (100) according to one embodiment of the present invention.

[0026] FIG. 4 is a schematic cross-sectional view of the section corresponding to A-A' in FIG. 1, and FIG. 5 is a schematic cross-sectional view of the section corresponding to B-B' in FIG. 1. However, for convenience of illustration, a part of FIG. 1 has been omitted.

[0027] FIGS. 1 to 5 may be understood as drawings illustrating a single metal card from various angles for the sake of convenience of explanation. However, as this is exemplary, some components may be omitted or added.

[0028] To clearly explain the embodiments of the present invention, directions are defined such that x, y, and z shown in the drawings represent the length direction, width direction, and height direction, respectively. Here, the length direction and width direction may be directions parallel to the horizontal plane, and the height direction may be a direction perpendicular to the horizontal plane.

[0029] Referring to FIGS. 1 to 6, a metal card (100) according to one embodiment of the present invention is formed by stacking various layers. The metal card (100) may be formed into a rectangular plate having a predetermined size and thickness, which may correspond to the size of a commonly used credit card. At this time, the surface shown in FIGS. 1 and 2 is referred to as the front surface of the metal card (100), and the surface shown in FIGS. 3 and 4 is referred to as the back surface of the metal card (100). Regarding the orientation of the front surface and the back surface, the same applies to each layer described later. The metal card (100) may include a front layer (110) forming the front of the metal card (100), a ferrite layer (120) laminated on the rear of the front layer (110), an inlay layer (130) laminated on the rear of the ferrite layer (120) and including an antenna pattern (132), and a rear layer (140) laminated on the rear of the inlay layer (130) to form the rear of the metal card (100). In addition, various components may be installed on the metal card (100), specifically, the metal card (100) may include an electronic chip (150).

[0030] Below, each component is explained in detail.

[0031] The front layer (110) may be formed from a metal material. For example, the front layer (110) may include at least one of aluminum alloy, titanium, stainless steel, and zinc. This is exemplary, and the front layer (110) may be formed from various metal materials that can be provided with a smooth and luxurious appearance.

[0032] As illustrated in FIGS. 1 and 2, the front layer (110) may be provided in the shape of a rectangular sheet having a predetermined size and thickness. This may correspond to the size of a commonly used credit card or debit card, and thereby the front layer (110) can form the front exterior of the metal card (100).

[0033] In addition, the front layer (110) may be provided with a first chip insertion hole (111) for mounting the electronic chip (150) at a predetermined position. It is preferable that the first chip insertion hole (111) be configured with a size corresponding to the size of the front surface of the electronic chip (150) so that the front surface of the electronic chip (150) can be fitted and inserted.

[0034] The ferrite layer (120) may be provided in the shape of a rectangular sheet having a predetermined size and thickness, and the shape may correspond to the shape of the front layer (110). The ferrite layer (120) may be laminated and adhered to the rear surface of the front layer (110), and for this purpose, an adhesive resin may be applied to the front surface of the ferrite layer (120), or an adhesive sheet (not shown) may be separately provided. In addition, the ferrite layer (120) may be provided with a ferrite material, and for this purpose, it may have a structure in the form of a thin sheet made of various metal compounds having a magnetic nature. As such, the ferrite layer (120) may have the property of shielding the propagation of an electromagnetic field as it is made of a ferrite material having ferromagnetism.

[0035] Additionally, the ferrite layer (120) may have a second chip insertion hole (121) for mounting the electronic chip (150) at a position corresponding to the first chip insertion hole (111).

[0036] The inlay layer (130) may be electrically connected to the electronic chip (150) to perform the role of an antenna during RF communication of the electronic chip (150). To this end, the inlay layer (130) may include a sheet body (131) in the shape of a sheet corresponding to the ferrite layer (130) and an antenna pattern (132) formed on the inner side of the sheet body (131). At this time, the antenna pattern (132) may be formed by winding it several times along the periphery of a position corresponding to the location of the first chip insertion hole (111) to the second chip insertion hole (121). In addition, the sheet body (131) may be provided with a material having electrical insulation properties such as PVC, PE, etc.

[0037] Meanwhile, the inlay layer (130) may be laminated and bonded to the rear surface of the ferrite layer (120), and for this purpose, an adhesive resin may be applied to the front surface of the inlay layer (130) or an adhesive sheet (not shown) may be separately provided.

[0038] The above rear layer (140) may include a metal region (141) provided with a metal sheet and a magnetic region (142) provided with a magnetic strip.

[0039] At this time, the metal region (141) may be provided with the same material as the front layer (110). In other words, the front layer (110) and the metal region (141) may be provided with the same metal material, for example, a metal material including at least one of aluminum alloy, titanium, stainless steel, and zinc.

[0040] The above magnetic area (142) may be a magnetically charged configuration, and user information, card information, etc. may be stored therein.

[0041] Meanwhile, referring to FIGS. 2 and 3, the magnetic region (142) may be located on one side in the width direction (y), and the metal region (141) may be located on the other side in the width direction (y). In other words, the back layer (140) may be divided into a magnetic region (142) located on one side in the width direction (y) and a metal region (141) located on the other side in the width direction (y), based on a boundary line formed as a straight line along the length direction (x). Additionally, the size of the metal region (141) may be relatively larger than the size of the magnetic region (142), but preferably, the size of the magnetic region (142) may be 1 / 3 or less of the total size of the back layer (140). This is because the larger the proportion of the size of the magnetic area (142) to the total size of the back layer (140), the less weight or aesthetic appeal there may be as a metal card made of metal.

[0042] On the other hand, the back layer (140) may be laminated and bonded to the back surface of the inlay layer (130), and for this purpose, an adhesive resin may be applied to the front surface of the back layer (130) or an adhesive sheet (not shown) may be separately provided.

[0043] The above electronic chip (150) is a chip device equipped with an integrated circuit configured to communicate with an external card terminal to perform the function of a card, and can be operated in a contactless manner by wirelessly communicating with an external card reader through the antenna pattern (132).

[0044] The electronic chip (150) can be inserted into the first chip insertion hole (111) and the second chip insertion hole (121) and electrically connected to the antenna pattern (132). Through this, the antenna pattern (132) can be formed by winding it several times along the periphery of the electronic chip (150).

[0045] At this time, when the two terminals of the electronic chip (150) are each connected to both ends of the antenna pattern (132) and a card reader is present within a preset distance range, the antenna pattern (132) generates an induced current by the card reader and provides it to the electronic chip (150), thereby enabling the electronic chip (150) to communicate with the card reader in a contactless manner through the antenna pattern (132).

[0046] Here, referring to FIG. 6, a portion of the antenna pattern (132) may belong to a region corresponding to the metal region (141), and the remaining portion of the antenna pattern (132) may belong to a region corresponding to the magnetic region (142).

[0047] Generally, when an antenna pattern is in contact with a metal layer or a metal layer exists nearby, the induced current generated by communication with an external card reader is not generated due to the metal layer, and as a result, the electronic chip cannot communicate with the card reader in a contactless manner and cannot operate normally. To solve this problem, a metal card (100) according to one embodiment of the present invention, as described above, has at least a portion of the antenna pattern (132) located in an area corresponding to the magnetic area (142), thereby minimizing the interference phenomenon of induced current generation caused by the metal area (141), so that an induced current can be generated normally in the antenna pattern (132).

[0048] Meanwhile, to examine this in more detail, refer to FIG. 6. The ratio of the width (y) distance (L1) from the boundary line between the metal area (141) and the magnetic area (142) to one end of the antenna pattern (132) located in the magnetic area (142), and the width (y) distance (L2) from the boundary line between the metal area (141) and the magnetic area (142) to the other end of the antenna pattern (132) located in the metal area (141), L1:L2 = 1:0.5 to 1:1.5, and more preferably, L1:L2 = 1:0.8 to 1:1. When the above conditions are satisfied, an induced current is normally generated in the antenna pattern (132), allowing for smoother communication with an external card reader.

[0049] FIG. 7 is a rear perspective view of a metal card (200) according to another embodiment of the present invention, and FIG. 8 is an exploded perspective view of a metal card (200) according to another embodiment of the present invention.

[0050] Hereinafter, a metal card (200) according to another embodiment of the present invention will be described in detail with reference to FIGS. 7 and 8.

[0051] Referring to FIGS. 7 and 8, a metal card (200) according to another embodiment of the present invention may include a front layer (210) forming the front of the metal card (200), a ferrite layer (220) laminated on the rear of the front layer (210), an inlay layer (230) laminated on the rear of the ferrite layer (220) and including an antenna pattern (232), a rear layer (240) laminated on the rear of the inlay layer (230) and forming the rear of the metal card (200), and an electronic chip (250).

[0052] The front layer (210) may be formed from a metal material. For example, the front layer (210) may include at least one of aluminum alloy, titanium, stainless steel, and zinc. This is exemplary, and the front layer (210) may be formed from various metal materials that can be provided with a smooth and luxurious appearance.

[0053] As illustrated in FIGS. 7 and 8, the front layer (210) may be provided in the shape of a rectangular sheet having a predetermined size and thickness. This may correspond to the size of a commonly used credit card or debit card, and thereby the front layer (210) can form the front exterior of the metal card (200).

[0054] In addition, the front layer (210) may be provided with a first chip insertion hole (211) for mounting the electronic chip (250) at a predetermined position. It is preferable that the first chip insertion hole (211) be configured with a size corresponding to the size of the front surface of the electronic chip (250) so that the front surface of the electronic chip (250) can be fitted and inserted.

[0055] The ferrite layer (220) may be provided in the shape of a rectangular sheet having a predetermined size and thickness, and the shape may correspond to the shape of the front layer (210). The ferrite layer (220) may be laminated and adhered to the rear surface of the front layer (210), and for this purpose, an adhesive resin may be applied to the front surface of the ferrite layer (220), or an adhesive sheet (not shown) may be separately provided. In addition, the ferrite layer (220) may be provided with a ferrite material, and for this purpose, it may have a structure in the form of a thin sheet made of various metal compounds having a magnetic nature. As such, the ferrite layer (220) may have the property of shielding the propagation of an electromagnetic field as it is made of a ferrite material having ferromagnetism.

[0056] Additionally, the ferrite layer (220) may have a second chip insertion hole (221) for mounting the electronic chip (250) at a position corresponding to the first chip insertion hole (211).

[0057] The inlay layer (230) may be electrically connected to the electronic chip (250) to perform the role of an antenna during RF communication of the electronic chip (250). To this end, the inlay layer (230) may include a sheet body (231) in the shape of a sheet corresponding to the ferrite layer (230) and an antenna pattern (232) formed on the inner side of the sheet body (231). At this time, the antenna pattern (232) may be formed by winding it several times along the periphery of a position corresponding to the location of the first chip insertion hole (211) to the second chip insertion hole (221). In addition, the sheet body (231) may be provided with a material having electrical insulation properties such as PVC, PE, etc.

[0058] Meanwhile, the inlay layer (230) may be laminated and bonded to the rear surface of the ferrite layer (220), and for this purpose, an adhesive resin may be applied to the front surface of the inlay layer (230) or an adhesive sheet (not shown) may be separately provided.

[0059] The above rear layer (240) may include a metal region (241) provided with a metal sheet and a magnetic region (242) provided with a magnetic strip.

[0060] At this time, the metal region (241) may be provided with the same material as the front layer (210). In other words, the front layer (210) and the metal region (241) may be provided with the same metal material, for example, a metal material including at least one of aluminum alloy, titanium, stainless steel, and zinc.

[0061] The above magnetic area (242) may be a magnetically charged configuration, and user information, card information, etc. may be stored therein.

[0062] Meanwhile, referring to FIGS. 7 and 8, the metal region (241) is divided and located at one end in the width direction (y) and the other end in the width direction (y), and the magnetic region (242) may be located between the metal region (242) divided into both sides in the width direction. In this case, the portion at the one end in the width direction (y) of the metal region (141) may be smaller than the portion located at the other end in the width direction (y).

[0063] In addition, the size of the metal area (241) may be relatively larger than the size of the magnetic area (242), but preferably, the size of the magnetic area (242) may be less than 1 / 3 of the total size of the back layer (240). This is because the larger the proportion of the size of the magnetic area (242) to the total size of the back layer (240), the less weight or aesthetic appeal there may be as a metal card made of metal material.

[0064] On the other hand, the back layer (240) may be laminated and bonded to the back of the inlay layer (230), and for this purpose, an adhesive resin may be applied to the front of the back layer (240) or an adhesive sheet (not shown) may be separately provided.

[0065] The above electronic chip (250) is a chip device equipped with an integrated circuit configured to communicate with an external card terminal to perform the function of a card, and can be operated in a contactless manner by wirelessly communicating with an external card reader through the antenna pattern (232).

[0066] The electronic chip (250) can be inserted into the first chip insertion hole (211) and the second chip insertion hole (221) and electrically connected to the antenna pattern (232). Through this, the antenna pattern (232) can be formed by winding it several times along the periphery of the electronic chip (252).

[0067] At this time, when the two terminals of the electronic chip (250) are each connected to both ends of the antenna pattern (232) and a card reader is present within a preset distance range, the antenna pattern (232) generates an induced current by the card reader and provides it to the electronic chip (250), thereby enabling the electronic chip (250) to communicate with the card reader in a contactless manner through the antenna pattern (232).

[0068] Meanwhile, a portion of the antenna pattern (232) may belong to an area corresponding to the metal area (241), and the remaining portion of the antenna pattern (232) may belong to an area corresponding to the magnetic area (242). In this case, the antenna pattern (232) may belong only to the metal area (241) located in either direction of the one end side in the width direction (y) and the other end side in the width direction (y) based on the magnetic area (242), and preferably may belong to the area of ​​the relatively larger of the two metal areas (241).

[0069] Generally, when an antenna pattern is in contact with a metal layer or a metal layer exists nearby, the induced current generated by communication with an external card reader is not generated due to the metal layer, and as a result, the electronic chip cannot communicate with the card reader in a contactless manner and cannot operate normally. To solve this problem, a metal card (200) according to another embodiment of the present invention, as described above, allows at least a portion of the antenna pattern (232) to belong to an area corresponding to the magnetic area (242), thereby minimizing the phenomenon of interference with the generation of induced current caused by the metal area (241), so that an induced current can be generated normally in the antenna pattern (232).

[0070] Meanwhile, to explain this in more detail, the ratio L1:L2 of the width (y) distance (L1) from the boundary line between the metal area (241) and the magnetic area (242) to one end of the antenna pattern (232) located in the magnetic area (242), and the width (y) distance (L2) from the boundary line between the metal area (241) and the magnetic area (242) to the other end of the antenna pattern (232) located in the metal area (241) may be 1:0.5 to 1:1.5, and more preferably L1:L2 may be 1:0.8 to 1:1. When the above conditions are satisfied, an induced current is normally generated in the antenna pattern (232), allowing for smoother communication with an external card reader.

[0071] As described above, the metal card (100, 200) according to an embodiment of the present invention has the advantage of minimizing the phenomenon of interference with the generation of induced current by the metal area (141, 241) and minimizing the reduction in consumer satisfaction, such as aesthetics and weight, which can be achieved with a metal card, by dividing the back layer (140, 240) into a metal area (141, 241) and a magnetic area (142, 242), and by having a part of the antenna pattern (132, 232) belong to an area corresponding to the metal area (141, 241) and the remaining part of the antenna pattern (132, 232) belong to an area corresponding to the magnetic area (142, 242).

[0072] Although embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and it will be obvious to those skilled in the art that various modifications and variations are possible within the scope of the technical concept of the present invention as described in the claims. Explanation of the symbols

[0073] 100: Metal card according to one embodiment of the present invention 200: Metal card according to another embodiment of the present invention 110, 210: Front layer 111, 211: First chip insertion hole 120, 220: Ferrite layer 121, 221: Second chip insertion hole 130, 230: Inlay layer 131, 231: Sheet body 132, 232: Antenna pattern 140, 240: Back layer 141, 241: Metal area 142, 242: Magnetic area 150, 250: Electronic chip

Claims

Claim 1 A metal card having an RF communication function comprises: a front layer provided in the form of a sheet of metal material to form the front surface of the metal card, and having a first chip insertion hole at a predetermined position; a ferrite layer provided in the form of a sheet of ferrite material and laminated on the rear surface of the front layer, and having a second chip insertion hole at a position corresponding to the first chip insertion hole; an inlay layer laminated on the rear surface of the ferrite layer and including a sheet layer constituting an outer shape and an antenna pattern formed inside the sheet layer; and a rear layer laminated on the rear surface of the inlay layer and forming the rear surface of the metal card. A metal card comprising: an electronic chip inserted into the first chip insertion hole and the second chip insertion hole and electrically connected to the antenna pattern; wherein the antenna pattern is formed by winding several times along the periphery of the electronic chip; and wherein the back layer is divided into a metal region provided with a sheet of the same metal material as the front layer and a magnetic region provided with a magnetic strip, wherein the size of the magnetic region is 1 / 3 or less of the total size of the back layer, and a part of the antenna pattern belongs to the region corresponding to the metal region, and the remaining part of the antenna pattern belongs to the region corresponding to the magnetic region. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A metal card according to claim 1, wherein the rear layer is divided into a magnetic area located on one side in the width direction and a metal area located on the other side in the width direction based on a boundary line formed as a straight line along the length direction, and the ratio of the width direction distance (L1) from the boundary line between the metal area and the magnetic area to one end of the antenna pattern located in the magnetic area, and the width direction distance (L2) from the boundary line between the metal area and the magnetic area to the other end of the antenna pattern located in the metal area, L1:L2 = 1:0.5 to 1:1.

5. Claim 7 A metal card according to claim 6, characterized in that the ratio L1:L2 = 1:0.8 to 1:1 of the widthwise distance (L1) from the boundary line between the metal area and the magnetic area to one end of the antenna pattern located in the magnetic area, and the widthwise (y) distance (L2) from the boundary line between the metal area and the magnetic area to the other end of the antenna pattern located in the metal area. Claim 8 A metal card according to claim 1, wherein the metal area is divided and located at one end and the other end in the width direction, the magnetic area is located between the metal areas divided on both sides in the width direction, and the portion at the one end in the width direction of the metal area is smaller than the portion at the other end in the width direction. Claim 9 A metal card according to claim 8, wherein the antenna pattern belongs only to the metal area located in one direction among the metal areas divided into one end side in the width direction and the other end side in the width direction based on the magnetic area, and is characterized by belonging to the relatively larger area among the two metal areas.

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