Double-sided metal non-contact intelligent card

Abstract

The utility model belongs to the technical field of intelligent cards, and particularly relates to a double-sided metal non-contact intelligent card, which comprises a middle substrate, a chip and an antenna, a first metal panel and a second metal panel are arranged on the front face and the back face of the middle substrate respectively, the antenna is arranged on the periphery of the first metal panel and / or the periphery of the second metal panel in a surrounding mode, the antenna is fixed to the middle substrate, and the two ends of the antenna are electrically connected with the chip. According to the utility model, the first metal panel and the second metal panel are respectively arranged on the front surface and the back surface of the middle substrate, and the antenna is arranged on the periphery of the first metal panel and / or the periphery of the second metal panel in a surrounding manner, so that non-contact antenna radio frequency signal transmission can be prevented from being interfered by metal materials; the non-contact function of the double-sided metal intelligent card is realized, and meanwhile, the overall use feeling of a user on the double-sided metal intelligent card is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of smart card technology, specifically relating to a double-sided metal contactless smart card. Background Technology

[0002] With the continuous development of smart society construction, various types of cards have been widely used in many fields, and people must carry them with them when traveling. Among them, metal cards are popular due to their special material, heavy feel, and resistance to deformation. However, due to the interference of metal material on the transmission of radio frequency signals from contactless antennas, most double-sided metal smart cards on the market are contact cards and do not have contactless card-swiping functionality. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a double-sided metal contactless smart card that enables the transmission of non-contact antenna radio frequency signals to be unaffected by the metal material, thereby solving the problem that current double-sided metal smart cards can only use contact and have no contactless function, and greatly improving the user's overall experience of using double-sided metal smart cards.

[0004] To achieve the above objectives, the technical solution of this utility model is a double-sided metal contactless smart card, including an intermediate substrate, a chip, and an antenna; the front and back sides of the intermediate substrate are respectively provided with a first metal panel and a second metal panel, the antenna is arranged around the outer periphery of the first metal panel and / or the outer periphery of the second metal panel, the antenna is fixed on the intermediate substrate, and both ends of the antenna are electrically connected to the chip.

[0005] As one embodiment, the antenna includes a first antenna portion surrounding the outer periphery of the first metal panel and a second antenna portion surrounding the outer periphery of the second metal panel. A first end of the first antenna portion and a first end of the second antenna portion are both electrically connected to the chip, and a second end of the first antenna portion is electrically connected to a second end of the second antenna portion.

[0006] As one embodiment, the projection of the first antenna portion on the intermediate substrate is staggered from the projection of the second antenna portion on the intermediate substrate.

[0007] As one implementation method, the first metal panel is provided with a chip avoidance area, and the chip is disposed in the chip avoidance area.

[0008] As one embodiment, the chip is provided with a first conductive contact pad, and a second conductive contact pad and a third conductive contact pad are provided on the front side of the intermediate substrate. The first conductive contact pad is electrically connected to the second conductive contact pad, the second conductive contact pad is electrically connected to the third conductive contact pad through a first wire, and the third conductive contact pad is electrically connected to the first end of the first antenna portion.

[0009] As one embodiment, the chip is provided with a fourth conductive contact pad, and a fifth conductive contact pad is provided on the front side of the intermediate substrate, the fifth conductive contact pad being electrically connected to the fourth conductive contact pad; a sixth conductive contact pad is provided on the back side of the intermediate substrate, the sixth conductive contact pad being electrically connected to the first end of the second antenna portion; the sixth conductive contact pad being electrically connected to the fifth conductive contact pad.

[0010] As one embodiment, a first conductive hole is provided on the intermediate substrate at the position corresponding to the sixth conductive contact disk. One end of the first conductive hole is electrically connected to the sixth conductive contact disk, and the other end is electrically connected to the fifth conductive contact disk through a second wire.

[0011] As one embodiment, a seventh conductive contact is provided on the front side of the intermediate substrate, and the seventh conductive contact is electrically connected to the second end of the first antenna portion; an eighth conductive contact is provided on the back side of the intermediate substrate, and the eighth conductive contact is electrically connected to the second end of the second antenna portion; the eighth conductive contact is electrically connected to the seventh conductive contact.

[0012] As one embodiment, a second conductive hole is provided on the intermediate substrate at the position corresponding to the eighth conductive contact disk. One end of the second conductive hole is electrically connected to the eighth conductive contact disk, and the other end is electrically connected to the seventh conductive contact disk through a third wire.

[0013] As one embodiment, the first metal panel is connected to the front side of the intermediate substrate through a first conductive adhesive layer, and the second metal panel is connected to the back side of the intermediate substrate through a second conductive adhesive layer.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention provides a first metal panel and a second metal panel on the front and back of the intermediate substrate, respectively, and surrounds the antenna around the outer periphery of the first metal panel and / or the outer periphery of the second metal panel. This avoids interference from the metal material in the transmission of non-contact antenna radio frequency signals, realizes the contactless function of the double-sided metal smart card, and greatly improves the user's overall experience of using the double-sided metal smart card. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a double-sided metal contactless smart card provided in an embodiment of this utility model (antenna and chip are not shown in the figure);

[0018] Figure 2 A schematic diagram of the first metal panel provided in an embodiment of the present utility model;

[0019] Figure 3 A schematic diagram of the second metal panel provided in an embodiment of the present utility model;

[0020] Figure 4 A front view of the intermediate substrate provided in an embodiment of this utility model;

[0021] Figure 5 A reverse view of the intermediate substrate provided in an embodiment of this utility model;

[0022] Figure 6 A schematic diagram of the back side of the chip provided in an embodiment of this utility model;

[0023] In the diagram: 1. Intermediate substrate; 2. First metal panel; 3. First conductive adhesive layer; 4. Second metal panel; 5. Second conductive adhesive layer; 6. Chip; 7. First antenna section; 8. Second antenna section; 9. First conductive contact pad; 10. Second conductive contact pad; 11. Third conductive contact pad; 12. First conductive wire; 13. Fourth conductive contact pad; 14. Fifth conductive contact pad; 15. Sixth conductive contact pad; 16. First conductive hole; 17. Second conductive wire; 18. Seventh conductive contact pad; 19. Eighth conductive contact pad; 20. Second conductive hole; 21. Third conductive wire. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] like Figures 1-3 As shown, this embodiment provides a double-sided metal contactless smart card, including an intermediate substrate 1, a chip 6, and an antenna. A first metal panel 2 and a second metal panel 4 are respectively disposed on the front and back sides of the intermediate substrate 1. The antenna is arranged around the outer periphery of the first metal panel 2 and / or the second metal panel 4, and is fixed to the intermediate substrate 1. Both ends of the antenna are electrically connected to the chip 6. This embodiment, by providing the first metal panel 2 and the second metal panel 4 on the front and back sides of the intermediate substrate 1 respectively, and by arranging the antenna around the outer periphery of the first metal panel 2 and / or the second metal panel 4, avoids interference from the metal material in the transmission of the contactless antenna radio frequency signal, realizing the contactless function of the double-sided metal smart card, and significantly improving the overall user experience.

[0028] In some embodiments, the antenna includes a first antenna portion 7 surrounding the outer periphery of the first metal panel 2 and a second antenna portion 8 surrounding the outer periphery of the second metal panel 4. A first end of both the first antenna portion 7 and the first end of the second antenna portion 8 are electrically connected to the chip 6, and a second end of the first antenna portion 7 is connected to a second end of the second antenna portion 8. By arranging the first antenna portion 7 and the second antenna portion 8 around the outer periphery of the first metal panel 2 and the second metal panel 4 respectively, and electrically connecting the first end of the first antenna portion 7 to the first end of the second antenna portion 8, the length of the antenna can be increased, thereby improving antenna performance.

[0029] Furthermore, the projection of the first antenna portion 7 onto the intermediate substrate 1 is staggered from the projection of the second antenna portion 8 onto the intermediate substrate 1. By staggering the first antenna portion 7 and the second antenna portion 8 in the thickness direction of the smart card, coupling interference can be reduced.

[0030] In one embodiment, the first antenna portion 7 includes two coils spirally arranged on the same plane, and the second antenna portion 8 includes one coil. In their projections onto the intermediate substrate 1, the one coil of the second antenna portion 8 is located between the two coils of the first antenna portion 7. Figure 2 As shown, the first metal panel 2 is rectangular, and both coils of the first antenna section 7 are rectangular, spirally wrapped around the first metal panel 2 on the same plane. There is a gap between the inner coil and the first metal panel 2, and the outer coil does not extend beyond the outer edge of the intermediate substrate 1. Figure 3 As shown, the second metal panel 4 is rectangular, and a coil of the second antenna portion 8 is wrapped around the second metal panel 4. There is a gap between the second antenna portion 8 and the second metal panel 4, and the second antenna portion 8 does not extend beyond the outer edge of the intermediate substrate 1. The gap between the inner coil and the outer coil of the first antenna portion 7 is greater than the width of the coil of the second antenna portion 8.

[0031] In another embodiment, the first antenna portion 7 includes a coil, and the second antenna portion 8 includes two coils spirally arranged on the same plane. In their projections on the intermediate substrate 1, the coil of the first antenna portion 7 is located between the two coils of the second antenna portion 8.

[0032] Furthermore, the first metal panel 2 is provided with a chip 6 avoidance area, and the chip 6 is disposed in the chip 6 avoidance area. Figure 2 As shown, the first metal panel 2 is provided with a first antenna avoidance area, and the first antenna avoidance area connects the chip 6 avoidance area with the periphery of the first metal panel 2, so as to facilitate the electrical connection between the first antenna portion 7 and the chip 6. In addition, the second metal panel 4 is provided with a second antenna avoidance area, and the second antenna avoidance area connects with the periphery of the second metal panel 4, and is vertically offset from the first antenna avoidance area, so as to facilitate the electrical connection between the second antenna portion 8 and the chip 6.

[0033] like Figure 2 , Figure 4 and Figure 6As shown, the chip 6 is provided with a first conductive contact pad 9, and a second conductive contact pad 10 and a third conductive contact pad 11 are provided on the front side of the intermediate substrate 1. The first conductive contact pad 9 is electrically connected to the second conductive contact pad 10, and the second conductive contact pad 10 is electrically connected to the third conductive contact pad 11 through a first wire 12. The third conductive contact pad 11 is electrically connected to the first end of the first antenna portion 7. Specifically, the second conductive contact pad 10 corresponds to the position of the first conductive contact pad 9, and the third conductive contact pad 11 corresponds to the position of one end of the first antenna portion 7. The first conductive contact pad 9 is provided on the back side of the chip 6, and the back side of the chip 6 is fixed to the front side of the intermediate substrate 1 by conductive adhesive, thereby realizing the electrical connection between the first conductive contact pad 9 and the second conductive contact pad 10 on the front side of the intermediate substrate 1. The third conductive contact pad 11 is electrically connected to the first end of the first antenna portion 7 by conductive adhesive.

[0034] like Figure 3 , Figure 5 and Figure 6 As shown, the chip 6 is provided with a fourth conductive contact pad 13, and a fifth conductive contact pad 14 is provided on the front side of the intermediate substrate 1. The fifth conductive contact pad 14 is electrically connected to the fourth conductive contact pad 13. A sixth conductive contact pad 15 is provided on the back side of the intermediate substrate 1. The sixth conductive contact pad 15 is electrically connected to the first end of the second antenna portion 8. The sixth conductive contact pad 15 is electrically connected to the fifth conductive contact pad 14. Further, a first conductive hole 16 is provided on the intermediate substrate 1 at the position corresponding to the sixth conductive contact pad 15. One end of the first conductive hole 16 is electrically connected to the sixth conductive contact pad 15, and the other end is electrically connected to the fifth conductive contact pad 14 through a second wire 17. Specifically, the fifth conductive contact 14 corresponds to the fourth conductive contact 13, and the sixth conductive contact 15 corresponds to one end of the second antenna portion 8. The fourth conductive contact 13 is disposed on the back of the chip 6, and the back of the chip 6 is fixed to the front of the intermediate substrate 1 by conductive adhesive, thereby realizing the electrical connection between the fourth conductive contact 13 and the fifth conductive contact 14 on the front of the intermediate substrate 1. The sixth conductive contact 15 is electrically connected to the first end of the second antenna portion 8 by conductive adhesive.

[0035] like Figures 2-5As shown, a seventh conductive contact 18 is disposed on the front side of the intermediate substrate 1, and the seventh conductive contact 18 is electrically connected to the second end of the first antenna portion 7; an eighth conductive contact 19 is disposed on the back side of the intermediate substrate 1, and the eighth conductive contact 19 is electrically connected to the second end of the second antenna portion 8; the eighth conductive contact 19 is electrically connected to the seventh conductive contact 18. Further, a second conductive hole 20 is disposed on the intermediate substrate 1 at a position corresponding to the eighth conductive contact 19. One end of the second conductive hole 20 is electrically connected to the eighth conductive contact 19, and the other end is electrically connected to the seventh conductive contact 18 via a third wire 21. Specifically, the seventh conductive contact 18 corresponds to the other end of the first antenna portion 7, and the eighth conductive contact 19 corresponds to the other end of the second antenna portion 8. Combined with the second conductive hole 20 and the third wire 21, the second end of the first antenna portion 7 and the second end of the second antenna portion 8 are electrically connected.

[0036] In this embodiment, the first metal panel 2 is connected to the front side of the intermediate substrate 1 via a first conductive adhesive layer 3, and the second metal panel 4 is connected to the back side of the intermediate substrate 1 via a second conductive adhesive layer 5. Further, the thickness of the intermediate substrate 1 is 0.40–0.45 mm, the thickness of the first metal panel 2 is 0.15–0.17 mm, the thickness of the second metal panel 4 is 0.15–0.17 mm, the thickness of the first conductive adhesive layer 3 is 0.04–0.05 mm, and the thickness of the second conductive adhesive layer 5 is 0.04–0.05 mm. In one embodiment, the thickness of the intermediate substrate 1 is 0.45 mm, the thickness of the first metal panel 2 is 0.15 mm, the thickness of the second metal panel 4 is 0.15 mm, the thickness of the first conductive adhesive layer 3 is 0.05 mm, and the thickness of the second conductive adhesive layer 5 is 0.05 mm.

[0037] In this embodiment, the intermediate substrate 1 can be manufactured using FR4 circuit board technology, the first metal panel 2 and the second metal panel 4 can be sheet materials made of metals such as tungsten, and the conductive adhesive layer can be made of ACF conductive adhesive; the first antenna portion 7, the second antenna portion 8 and the chip avoidance area can all be obtained by processing the metal panels using CNC equipment after bonding the metal panels to the front and back of the intermediate substrate 1.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-sided metal contactless smart card, comprising an intermediate substrate, characterized in that: It also includes a chip and an antenna; the front and back sides of the intermediate substrate are respectively provided with a first metal panel and a second metal panel, the antenna is disposed around the outer periphery of the first metal panel and / or the outer periphery of the second metal panel, the antenna is fixed on the intermediate substrate, and both ends of the antenna are electrically connected to the chip.

2. The contactless smart card as described in claim 1, characterized in that: The antenna includes a first antenna portion surrounding the outer periphery of the first metal panel and a second antenna portion surrounding the outer periphery of the second metal panel. The first end of the first antenna portion and the first end of the second antenna portion are both electrically connected to the chip, and the second end of the first antenna portion is electrically connected to the second end of the second antenna portion.

3. The contactless smart card as described in claim 2, characterized in that: The projection of the first antenna portion on the intermediate substrate is staggered from the projection of the second antenna portion on the intermediate substrate.

4. The contactless smart card as described in claim 2, characterized in that: The first metal panel is provided with a chip avoidance area, and the chip is disposed in the chip avoidance area.

5. The contactless smart card as described in claim 4, characterized in that: The chip is provided with a first conductive contact pad, and a second conductive contact pad and a third conductive contact pad are provided on the front side of the intermediate substrate. The first conductive contact pad is electrically connected to the second conductive contact pad, the second conductive contact pad is electrically connected to the third conductive contact pad through a first wire, and the third conductive contact pad is electrically connected to the first end of the first antenna portion.

6. The contactless smart card as described in claim 4, characterized in that: The chip is provided with a fourth conductive contact pad, and a fifth conductive contact pad is provided on the front side of the intermediate substrate. The fifth conductive contact pad is electrically connected to the fourth conductive contact pad. A sixth conductive contact pad is provided on the back side of the intermediate substrate. The sixth conductive contact pad is electrically connected to the first end of the second antenna portion. The sixth conductive contact pad is electrically connected to the fifth conductive contact pad.

7. The contactless smart card as described in claim 6, characterized in that: A first conductive hole is provided on the intermediate substrate at the position corresponding to the sixth conductive contact disk. One end of the first conductive hole is electrically connected to the sixth conductive contact disk, and the other end is electrically connected to the fifth conductive contact disk through a second wire.

8. The contactless smart card as described in claim 4, characterized in that: A seventh conductive contact is provided on the front side of the intermediate substrate, and the seventh conductive contact is electrically connected to the second end of the first antenna portion; an eighth conductive contact is provided on the back side of the intermediate substrate, and the eighth conductive contact is electrically connected to the second end of the second antenna portion; the eighth conductive contact is electrically connected to the seventh conductive contact.

9. The contactless smart card as described in claim 8, characterized in that: A second conductive hole is provided on the intermediate substrate at the position corresponding to the eighth conductive contact disk. One end of the second conductive hole is electrically connected to the eighth conductive contact disk, and the other end is electrically connected to the seventh conductive contact disk through a third wire.

10. The contactless smart card as described in claim 1, characterized in that: The first metal panel is connected to the front side of the intermediate substrate through a first conductive adhesive layer, and the second metal panel is connected to the back side of the intermediate substrate through a second conductive adhesive layer.

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