Finger ring for card with non-contact short-distance wireless communication function and manufacturing method thereof

Abstract

The invention relates to a finger ring for a card. The finger ring for the card is provided with an integrated circuit element (IC chip) for control and a booster circuit module, a loop antenna; and a main body part which is formed in a ring shape and on which the control integrated circuit element and the loop antenna are mounted. The main body part is provided with: a slit formed by completely cutting a partial region of the main body part; an antenna slot; provided is a groove for an integrated circuit element. The loop antenna is mounted in a state of being wound along the antenna groove several times, the control integrated circuit element is mounted in the integrated circuit element groove, and a slit exposed in the main body, the antenna groove, and the integrated circuit element groove are filled with a curable epoxy resin. The booster circuit module is composed of a circuit having a predetermined capacitance that adjusts the operating frequency of the integrated circuit element depending on the shape and size of the main body part of the card ring.

Description

Technical Field

[0001] The present invention relates to a card ring with a contactless short-range wireless communication function and a method for manufacturing the same. More specifically, the card ring is composed of a single main body, on which an integrated circuit element (IC chip) and a boost circuit module are installed, as well as a ring antenna that can realize contactless short-range wireless communication. The exposed area of ​​the main body is filled with a curable epoxy resin, thereby realizing a contactless short-range wireless communication function and a method for manufacturing the card ring. Background Art

[0002] Currently, the use of credit cards is increasing, and transportation cards and debit cards are also widely used for settlement of small transactions. According to the use of these cards, various methods have been proposed to facilitate use while minimizing the risk of losing the card.

[0003] As an example of this method, a ring-shaped card is proposed. Korean registered utility model No. 20-0294180 is related to a "ring with a built-in IC chip", which discloses a ring with a built-in IC chip that can be used as a credit card, transportation card, electronic currency, parking lot access card, department store card, etc. through the IC card. The ring with a built-in IC chip according to the above utility model is formed by a ring antenna connected to an IC chip that supports a contactless short-range wireless communication function and is wound on the ring body. The ring antenna connected to the IC chip performs contactless short-range wireless communication with an external terminal. The ring antenna not only generates an induced current through contactless short-range wireless communication to input to the IC chip, but also can transmit and receive data with the external terminal.

[0004] However, when metal material is wound around the loop antenna, the characteristics of the metal material will attenuate the strength of the signal received from the external terminal, resulting in the loop antenna being unable to generate an induced current, and data transmission and reception with the external terminal becoming difficult.

[0005] Therefore, in order to effectively implement the non-contact short-distance wireless communication function of the IC chip, the main body of the ring must be made of a non-electrical and electrically insulating material. Therefore, the defect of the ring of the above utility model is that it cannot be made of an electrically conductive metal material or a precious metal material, and can only be made of an electrically insulating material such as synthetic resins such as plastics, ceramics, etc.

[0006] To solve this problem, the inventor of this patent proposed Korean registered patent No. 10-2070245. The registered patent relates to "metal jewelry with non-contact short-range wireless communication function and its manufacturing method", which is characterized in that the main body of the metal jewelry is separated into a first main body and a second main body that can be connected to each other, and a control integrated circuit element and a loop antenna can be mounted between them. Figure 1 is an exploded perspective view showing the structure of metal jewelry according to the prior art. Figure 1 As shown, the two main bodies of the metal jewelry according to the aforementioned patent should form precise grooves along the inner circumference, but this process is not simple. In addition, according to the aforementioned metal jewelry, since it is manufactured by dividing it into two main bodies, and then mounting the antenna module and the integrated circuit element between them, and then combining the two main bodies together, its manufacturing process is complicated and the combining process is not simple, which leads to the problem of difficulty in achieving mass production and increased manufacturing costs. Summary of the invention

[0007] The object of the present invention is to provide a card ring which is composed of a single main body part, is easy to manufacture and can unimpededly support a contactless short-range wireless communication function, and a manufacturing method thereof.

[0008] To achieve the technical problem, a card ring according to the first feature of the present invention comprises: a control integrated circuit element (IC chip), which can perform contactless short-range wireless communication with an external card reader; a loop antenna, which is composed of a coated coil with a predetermined length, and the two ends of the coil are respectively connected to the two ends of the control integrated circuit element; a main body, which is composed of a metal or precious metal material and is formed in a ring shape with a through hole formed in the center, and the control integrated circuit element and the loop antenna are installed;

[0009] Preferably, the main body has: a slit formed by completely cutting a part of the main body; an antenna groove formed along the outer peripheral surface of the main body; and an integrated circuit element groove formed in a predetermined area of ​​the main body. The loop antenna is installed in a state of being wound several times along the antenna groove, and the control integrated circuit element is installed in the integrated circuit element groove; the exposed slit of the main body, the antenna groove, and the integrated circuit element groove are filled with a filling material having electrical insulation.

[0010] According to the second feature of the present invention, the card ring comprises: a control integrated circuit element (IC chip), which can perform contactless short-range wireless communication with an external card reader; a loop antenna, which is composed of a coated coil with a predetermined length, and the two ends of the coil are respectively connected to the two ends of the control integrated circuit element; a main body, which is formed in a ring shape with a through hole formed in the center, and the control integrated circuit element and the loop antenna are installed;

[0011] Preferably, the main body has: an antenna groove formed along the outer peripheral surface of the main body; and an integrated circuit element groove formed in a predetermined area of ​​the main body. The loop antenna is installed in a state of being wound several times along the antenna groove, and the control integrated circuit element is installed in the integrated circuit element groove; the exposed antenna groove and integrated circuit element groove of the main body are filled with a filling material having electrical insulation.

[0012] Preferably, in the card ring according to the first and second characteristics, the filling material is composed of a cured curable epoxy resin, or a mixture of a cured curable epoxy resin and a pigment.

[0013] Preferably, according to the card ring of the first and second characteristics mentioned above, the card ring also has a boost circuit module, which is composed of a circuit with a predetermined capacitance and is connected in parallel to the control integrated circuit element; the boost circuit module is configured to adjust the capacitance of the control integrated circuit so that the operating frequency reaches the highest matching frequency; further preferably, the capacitance of the boost circuit module depends on the shape and size of the main body of the card ring.

[0014] The method for making a card ring according to the third feature of the present invention includes: (a) making a metal structure having a ring shape; (b) etching along the outer peripheral surface of the structure to form an antenna groove with a certain width and depth, and etching in a predetermined area of ​​the structure to form an integrated circuit element groove with a certain size and depth; (c) completely cutting a part of the structure to form a slit; (d) winding the ring antenna several times and installing it in the antenna groove of the structure; (e) connecting both ends of the ring antenna to a control integrated circuit element (IC chip) that can perform contactless short-range wireless communication with an external card reader, and installing the control integrated circuit element in the integrated circuit element groove of the structure after coating the control integrated circuit element with an insulating material; (f) filling the antenna groove, integrated circuit element groove and slit of the structure with a filling material containing a curable epoxy resin and curing it.

[0015] According to the fourth feature of the present invention, the method for making a card ring includes: (a) the step of making a ring-shaped metal structure; (b) the step of etching along the outer peripheral surface of the structure to form an antenna groove with a certain width and depth, and the step of etching in a predetermined area of ​​the structure to form an integrated circuit element groove with a certain size and depth; (c) the step of winding the ring antenna several times and installing it in the antenna groove of the structure; (d) the step of connecting the two ends of the ring antenna to a control integrated circuit element (IC chip) that can perform contactless short-range wireless communication with an external card reader, and after coating the control integrated circuit element with an insulating material, installing it in the integrated circuit element groove of the structure; (e) the step of filling the antenna groove and the integrated circuit element groove of the structure with a filling material containing a curable epoxy resin.

[0016] Preferably, the method for making a card ring according to the third and fourth features mentioned above further includes: (g) a step of plating or coating the surface after grinding the surface of the epoxy resin cured structure.

[0017] Preferably, according to the method for making a card ring of the third and fourth characteristics described above, before filling the filling material containing the curable epoxy resin, the bubbles in the curable epoxy resin are eliminated by high temperature or high pressure, and then the curable epoxy resin with the bubbles eliminated is filled into the structure.

[0018] Preferably, the method for manufacturing a card ring according to the third and fourth features further includes the step of manufacturing a boost circuit module having a predetermined capacitance and connecting the boost circuit module in parallel to the control integrated circuit element. Further preferably, the capacitance of the boost circuit module depends on the shape and size of the structure of the card ring body that determines the diameter and length of the loop antenna.

[0019] The card ring according to the present invention having the above-mentioned structure has the beneficial effect that it is made into a ring shape, and a control integrated circuit element and a ring antenna that can support contactless wireless communication are installed inside it, thereby supporting contactless credit card, transportation card and other functions.

[0020] The card ring according to the present invention has the beneficial effect that it is made of a ring-shaped metal material or precious metal material with a through hole formed in the central part, and has a slit cut into a part of the ring-shaped main body. While having the same appearance as the existing precious metal ring, it can support functions such as contactless credit cards or transportation cards.

[0021] The card ring according to the present invention has the beneficial effect that it is composed of a main body of a single structure, and the grooves exposed for installing antennas and integrated circuit components are filled with a filling material containing a curable epoxy resin and the surface is polished after curing, so it is simple to manufacture.

[0022] The card ring according to the present invention has the beneficial effect that it is configured to be connected to a boost circuit module to adjust the capacitance of the integrated circuit element, thereby operating at the highest matching frequency, thereby increasing the recognition distance of the card ring to the maximum. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded perspective view illustrating a metal jewelry structure according to the prior art;

[0024] Figure 2 1 is a front perspective view and a back perspective view of a card ring with a contactless short-range wireless communication function according to a preferred embodiment of the present invention;

[0025] Figure 3 A card ring with a contactless short-range wireless communication function according to a preferred embodiment of the present invention is shown, and a simulation diagram of the state in which a loop antenna, a control integrated circuit element, and a boost circuit module are electrically connected is shown;

[0026] Figure 4 is a card ring according to a preferred embodiment of the present invention, illustrating examples of various forms of slits formed in the main body;

[0027] Figure 5 is a flow chart sequentially illustrating a method for manufacturing a card ring with a contactless short-range wireless communication function according to a preferred embodiment of the present invention;

[0028] Figure 6 The present invention is a method for manufacturing a card ring according to a preferred embodiment of the present invention, and illustrates an example perspective view of a structure having an antenna slot, an integrated circuit element slot, and a slit, that is, a structure to be a ring body;

[0029] Figure 7 This is a method for manufacturing a card ring according to a preferred embodiment of the present invention, and illustrates an example perspective view of a state in which a loop antenna, a control integrated circuit element, and a boost circuit module are installed in a structure that is to become a ring body. DETAILED DESCRIPTION

[0030] According to the card ring with contactless short-range wireless communication function of the present invention, an integrated circuit element and a loop antenna are installed in a main body formed in a single shape, so that it can perform contactless short-range wireless communication with an external terminal, and thus has the characteristic of being conveniently used as a credit card, etc.

[0031] The structure, operation and manufacturing method of a card ring with a contactless short-range wireless communication function according to a preferred embodiment of the present invention are described in detail below with reference to the accompanying drawings.

[0032] <Card Ring>

[0033] Figure 2 1 is a front perspective view and a back perspective view of a card ring with a contactless short-range wireless communication function according to a preferred embodiment of the present invention. Figure 2 and the following Figure 3 The card ring 1 of the present invention includes a main body 10 , a control integrated circuit element 20 , a boost circuit module 30 , and a loop antenna 40 .

[0034] The control integrated circuit element 20 is an integrated circuit element (IC chip) that can perform non-contact short-range wireless communication with an external terminal. It performs non-contact short-range wireless communication with an external card reader through the loop antenna, provides induced current and sends and receives data through induced electromotive force, and further, can drive a pre-set program using the sent and received data. The control integrated circuit element can be composed of an IC chip for credit cards, an IC chip for settlement, or an IC chip for door locks, etc. driven in a non-contact manner. If the control integrated circuit element is an IC chip for cards, the card ring of the present invention can perform the functions of a credit card or a transportation card, or the function of a payment card. If the control integrated circuit element is an IC chip for a door lock, the card ring of the present invention can perform the function of a portable key for a door lock.

[0035] According to the present invention, the card ring is manufactured in different sizes according to the ring number, and the length of the coil constituting the loop antenna and the diameter of the antenna will also change according to the size of the ring. In addition, according to the design of the card ring, there are differences in the structure of the main part of the ring, that is, the size of the head of the ring, the width or thickness of the main part, so according to the design of the card ring that makes the structure different, the length of the coil constituting the loop antenna and the diameter of the antenna will change. Therefore, according to the length and diameter of the loop antenna that change according to the size or design of each card ring, the internal capacitance (C) of the integrated circuit element installed on the ring changes, and the problem of changing the operating frequency of the integrated circuit element determined by "operating frequency (F) = 1 / (2πRC)" occurs.

[0036] To solve this problem, according to the card ring of the present invention, a boost circuit module is connected to the integrated circuit element. The boost circuit module 30 is composed of a circuit that provides a predetermined capacitance and is connected in parallel to both ends of the control integrated circuit element. The circuit that provides a predetermined capacitance can be composed of multiple capacitors, or can be composed of multiple other semiconductor elements. In the present invention, as a boost circuit module, one or more capacitors are connected in series or in parallel as an example.

[0037] The capacitance of the boost circuit module may be determined by the size and design of the main body that determines the length and diameter of the loop antenna.

[0038] Preferably, the boost circuit module is connected in parallel to the control integrated circuit element, and the operating frequency is adjusted by adjusting the capacitance of the integrated circuit element so that the operating frequency of the integrated circuit element maintains the matching frequency of the integrated circuit element. As described above, the recognition distance of the card ring can be maximized by maintaining the operating frequency of the integrated circuit element at the matching frequency.

[0039] The integrated circuit element and the boost circuit module are preferably electrically insulated by wrapping the surface with a shrink tube, high temperature tape, etc. or coating the surface with an electrical insulating material. As described above, by electrically insulating the surface of the integrated circuit element and the boost circuit module, a short circuit (short) phenomenon due to contact with the main body of the metal material can be prevented.

[0040] The loop antenna 40 is an antenna composed of a coil of a predetermined length with an insulating material coated on the surface connected to the two ends of the control integrated circuit element and the boost circuit module connected in parallel, and is installed inside the main body together with the control integrated circuit element and the boost circuit module. The loop antenna 40 is preferably formed by winding several times along the outer circumference of the ring-shaped main body. In order to obtain the signal strength required for unimpeded transmission and reception of data with an external terminal, the loop antenna is preferably about 700 mm or more in length.

[0041] Figure 3 The present invention is a card ring with a contactless short-range wireless communication function according to a preferred embodiment of the present invention, and shows a simulation diagram of the electrical connection between a loop antenna, a control integrated circuit element, and a boost circuit module. Figure 3 The two ends of the loop antenna 40 wound several times along the outer circumference of the card ring body are connected in parallel to the two ends of the control integrated circuit element 20 and the boost circuit module 30 .

[0042] The main body 10 is formed in a ring shape with a through hole formed in the center, and the control integrated circuit element, the boost circuit module and the loop antenna can be installed. The main body 10 has an antenna groove 100 formed along the outer peripheral surface of the main body, and an integrated circuit element groove 110 formed in a predetermined area of ​​the main body. The coil constituting the loop antenna is wound several times along the antenna groove and installed, and the control integrated circuit element and the boost circuit module connected in parallel are installed in the integrated circuit element groove.

[0043] In addition, the main body 10 can be made of a variety of materials, such as non-metallic materials, metal materials, and precious metal materials generally used for rings. However, if the main body is formed of a conductive metal material, the metal main body makes it impossible for the loop antenna to send and receive signals with an external card reader, which in turn causes the problem that the integrated circuit element that should work in a non-contact manner cannot work normally. To solve this problem, the main body is also required to have a slit 120 formed by a portion being completely cut open. Since the main body of the card ring has a slit, it can be close to an external card reader, so that the loop antenna generates an induced current through the induced electromotive force through the card reader, and the induced current generated on the antenna flows into the non-contact integrated circuit element, whereupon the integrated circuit element can work normally.

[0044] Figure 4 FIG. 1 is a card ring according to a preferred embodiment of the present invention, and illustrates various forms of slits formed on the main body. Figure 4 The slit is a portion of the ring-shaped main body that is cut, and its shape can be composed of a variety of shapes such as curves, straight lines, oblique lines, figures, etc., or can be composed of a predetermined pattern.

[0045] The slit of the main body, the antenna groove for mounting the loop antenna, and the exposed area of ​​the integrated circuit element groove for mounting the integrated circuit element and the boost circuit module are filled with an electrically insulating resin material. The filling material is preferably composed of a curable epoxy resin, or a mixed material of a curable epoxy resin and a pigment. Preferably, after the mixed material of the curable epoxy resin and a predetermined pigment is filled and cured in the exposed area of ​​the slit, the antenna groove, and the integrated circuit element groove, the surface of the main body exposed by the cured filling material is polished so that the filling material acts as a pattern with a specific color.

[0046] According to the following Figure 5 The method for manufacturing the card ring of the present invention is described in detail. Figure 5 It is a flow chart that sequentially describes a method for manufacturing a card ring with a contactless short-range wireless communication function according to a preferred embodiment of the present invention.

[0047] according to Figure 5 The manufacturing method of the card ring of the present invention is to first make an annular structure that will become the main body of the card ring (step 400).

[0048] Then, an antenna slot is formed by etching along the outer circumference of the annular structure at a certain width and depth, and an integrated circuit element slot is formed by etching an arbitrary area of ​​the structure at a certain depth (step 410). Both ends of the antenna slot should be connected to the integrated circuit element slot by etching. The integrated circuit element slot is preferably formed on the back of the head.

[0049] Then, if the annular structure is a metal structure, a portion of the annular structure is cut to form a slit (step 420). Figure 6 1 is a method for manufacturing a card ring according to a preferred embodiment of the present invention, and shows an example perspective view of a structure 10 having an antenna slot 100, a slot 110 for an integrated circuit element, and a slit 120, i.e., a structure to become a ring body.

[0050] Then, the loop antenna is wound several times and installed in the antenna groove of the structure (step 430).

[0051] Then, the boost circuit module is connected in parallel to the two ends of the control integrated circuit element (step 440), and after the two ends of the loop antenna are connected to the two ends of the control integrated circuit element (step 442), after the surfaces of the control integrated circuit element and the boost circuit module are coated with insulating material, they are installed in the integrated circuit element groove of the structure (step 444). Figure 7 This is a method for manufacturing a card ring according to a preferred embodiment of the present invention, and illustrates an example perspective view of a state in which a loop antenna, a control integrated circuit element, and a boost circuit module are installed in a structure that is to become a ring body.

[0052] Then, high temperature or high pressure is applied to the filling material including curable epoxy resin to remove bubbles in the epoxy resin, thereby preparing the filling material (step 450). Then, after the filling material from which bubbles have been removed is filled in the exposed antenna groove and integrated circuit component groove of the structure and the slit formed by cutting a part of the structure, it is exposed to a UV lamp for curing (step 460). The filling material can be composed of curable epoxy resin, or a mixture of curable epoxy resin and pigment. As described above, by filling the antenna groove, integrated circuit groove and slit of the metal structure with curable epoxy resin from which bubbles have been removed, the cured epoxy resin structure is formed tightly, thereby increasing the firmness and beauty of the ring.

[0053] Then, after grinding the surface of the epoxy resin cured structure, plating or coating is performed on the surface (step 470).

[0054] Through the above process, the Figure 2 The card ring shown in the figure is produced to support contactless wireless communication.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with its preferred embodiments as the core, a person skilled in the art can still modify or apply the technical solutions described in the above embodiments, and these modifications or applications do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions described in the embodiments of the present invention. In addition, these differences related to modifications and applications should be interpreted as being included in the scope of the present invention as specified in the claims.

Claims

1. A card ring with a contactless short-range wireless communication function, characterized in that: include: A control integrated circuit element (IC chip) that can perform contactless short-range wireless communication with an external card reader; a loop antenna that is composed of a coated coil with a predetermined length, and the two ends of the coil are respectively connected to the two ends of the control integrated circuit element; a main body that is composed of a metal or precious metal material and is formed in a ring shape with a through hole formed in the center, and is installed with the control integrated circuit element and the loop antenna; the main body has: a slit formed by completely cutting a part of the main body area; an antenna groove formed along the outer peripheral surface of the main body; an integrated circuit element groove formed in a predetermined area of ​​the main body; the loop antenna is installed in a state of being wound several times along the antenna groove, and the control integrated circuit element is installed in the integrated circuit element groove; the exposed slit, antenna groove and integrated circuit element groove of the main body are filled with a filling material with electrical insulation.

2. The card ring with contactless short-range wireless communication function according to claim 1, characterized in that: The filling material is a cured epoxy resin.

3. The card ring with contactless short-range wireless communication function according to claim 1, characterized in that: The filling material is a mixture of cured epoxy resin and pigment.

4. The card ring with contactless short-range wireless communication function according to claim 1, characterized in that: The card ring also has a boost circuit module, which is composed of a circuit with a predetermined capacitance and is connected in parallel to the control integrated circuit element; the boost circuit module is configured to adjust the capacitance of the control integrated circuit so that the operating frequency reaches the highest matching frequency.

5. The card ring with contactless short-range wireless communication function according to claim 4, characterized in that: The capacitance of the boost circuit module depends on the shape and size of the main body of the card ring.

6. A card ring with a contactless short-range wireless communication function, characterized in that: The invention comprises: a control integrated circuit element (IC chip), which can perform contactless short-range wireless communication with an external card reader; a loop antenna, which is composed of a coated coil with a predetermined length, and the two ends of the coil are respectively connected to the two ends of the control integrated circuit element; a main body, which is formed in a ring shape with a through hole formed in the center and is equipped with the control integrated circuit element and the loop antenna; the main body comprises: an antenna groove formed along the outer peripheral surface of the main body; an integrated circuit element groove formed in a predetermined area of ​​the main body; the loop antenna is installed in a state of being wound several times along the antenna groove, and the control integrated circuit element is installed in the integrated circuit element groove; the exposed antenna groove and integrated circuit element groove of the main body are filled with a filling material having electrical insulation properties.

7. The card ring with contactless short-range wireless communication function according to claim 6, characterized in that: The filling material is a cured curable epoxy resin.

8. The card ring with contactless short-range wireless communication function according to claim 6, characterized in that: The filling material is a mixed material of a cured curable epoxy resin and a pigment.

9. The card ring with contactless short-range wireless communication function according to claim 6, characterized in that: The card ring also has a boost circuit module, which is composed of a circuit with a predetermined capacitance and is connected in parallel to the control integrated circuit element; the boost circuit module can adjust the capacitance of the control integrated circuit so that the operating frequency reaches the highest matching frequency.

10. The card ring with contactless short-range wireless communication function according to claim 9, characterized in that: The capacitance of the boost circuit module depends on the shape and size of the main body of the card ring.

11. A method for manufacturing a card ring with a contactless short-range wireless communication function, characterized in that: include: (a) a step of manufacturing a ring-shaped metal structure; (b) etching along the outer peripheral surface of the structure to form a groove for the antenna with a certain width and depth, and etching in a predetermined area of ​​the structure to form a groove for the integrated circuit element with a certain size and depth; (c) a step of completely cutting a portion of the structure to form a slit; (d) a step of winding the loop antenna several times and installing it in the antenna slot of the structure; (e) connecting both ends of the loop antenna to a control integrated circuit element capable of performing contactless short-range wireless communication with an external card reader, and installing the control integrated circuit element in a groove for the integrated circuit element of the structure after coating the control integrated circuit element with an insulating material; (f) A step of filling the antenna groove, the IC element groove, and the slit of the structure with a filling material containing a curable epoxy resin and then curing the filling material.

12. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 11, characterized in that: Also includes: (g) After grinding the surface of the epoxy resin cured structure, a step of plating or coating the surface.

13. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 11, characterized in that: Before filling the filling material containing the curable epoxy resin, air bubbles in the curable epoxy resin are eliminated by high temperature or high pressure, and then the curable epoxy resin from which air bubbles have been eliminated is filled into the structure.

14. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 11, characterized in that: The method for manufacturing the card ring further includes the steps of manufacturing a boost circuit module with a predetermined capacitance and connecting the boost circuit module in parallel to the control integrated circuit element.

15. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 14, characterized in that: The capacitance of the boost circuit module depends on the shape and size of the structure to be the main body of the card ring.

16. A method for manufacturing a card ring with a contactless short-range wireless communication function, characterized in that: (a) a step of manufacturing a ring-shaped metal structure; (b) etching along the outer peripheral surface of the structure to form a groove for the antenna with a certain width and depth, and etching in a predetermined area of ​​the structure to form a groove for the integrated circuit element with a certain size and depth; (c) a step of installing the loop antenna in the antenna groove of the structure by winding it several times; (d) connecting both ends of the loop antenna to a control integrated circuit element capable of performing contactless short-range wireless communication with an external card reader, coating the control integrated circuit element with an insulating material, and then installing the control integrated circuit element in a groove for the integrated circuit element of the structure; (e) A step of filling the antenna groove and the integrated circuit element groove of the structure with a filling material containing a curable epoxy resin.

17. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 16, characterized in that: The method for making the card ring also includes: (g) After grinding the surface of the epoxy resin cured structure, a step of plating or coating the surface.

18. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 16, characterized in that: Before filling the filling material containing the curable epoxy resin, air bubbles in the curable epoxy resin are eliminated by high temperature or high pressure, and then the curable epoxy resin from which air bubbles have been eliminated is filled into the structure.

19. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 16, characterized in that: The method for manufacturing the card ring further includes the steps of manufacturing a boost circuit module with a predetermined capacitance and connecting the boost circuit module in parallel to the control integrated circuit element.

20. The method for manufacturing a card ring with a contactless short-range wireless communication function according to claim 19, characterized in that: The capacitance of the boost circuit module depends on the shape and size of the structure to be the main body of the card ring.

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