KR100947217B1 - Method for manufacturing casino chip with rfid tag - Google Patents

Abstract

PURPOSE: A method for manufacturing a casino chip with an RFID tag is provided to prevent damages on an IC of the RFID tag or an antenna due to high pressure and temperature. CONSTITUTION: One or more holes(116) are formed on a plate. A concave part(126) is formed around the hole. An integrated circuit and an antenna are mounted in the concave part. The antenna is connected to the integrated circuit. A case is formed with injection molding to surround the external side of the plate.

Description

Manufacturing method of casino chip with RFID tag embedded {METHOD FOR MANUFACTURING CASINO CHIP WITH RFID TAG}

The present invention relates to a method of manufacturing a casino chip embedded with an RFID tag, and more particularly, a protective film is formed to protect an integrated circuit and an antenna of the RFID tag, thereby preventing the RFID tag from being damaged in the manufacturing process. The present invention relates to a casino chip in which an RFID tag is embedded to communicate with each other using a specific frequency, thereby improving permeability and minimizing an interference distance between chips.

Casino chips are used in casinos to distinguish between amounts or players, and are largely divided into value chips and non value chips.

Value chips are chips that can be cashed, with the face value and the casino logo on the surface of the chip, which can be cashed at any time in the casino. The amount varies from casino to casino, but most casinos use chips worth $ 1, $ 5, $ 10, $ 100, $ 1, $ 5, and $ 10.

Non-Value Chips are non-cashable chips that are typically made up of several colors, such as about 7, to differentiate players in games such as Roulette or Tai-Sai. It is a kind of color.

Since these casino chips are very expensive cash substitutes, it is necessary to make efforts to prevent exportation, forgery, and alteration to the outside. Methods for this include holograms, UV inks, watermarks, magnetic strips, bar codes, and RFID (Radio Frequency IDentification). Among them, RFID is a magnetic strip (magnetic strip). Compared with the strip and bar code method, the service life is semi-permanent, and it is impossible to modulate or manage.

Therefore, recently, many methods using RFID have been introduced. RFID technology refers to a technology that recognizes information over long distances using radio waves. This requires an RFID tag and an RFID reader. The tag consists of an antenna and an integrated circuit, which records information in the integrated circuit and transmits the information to the reader through the antenna. This information is used to identify the tagged object.

When manufacturing the casino chip by inserting the RFID tag, there was a problem that the integrated circuit or antenna of the RFID tag is damaged by high temperature and pressure in the manufacturing process.

When applied to casino chips using 13.56MHz, the most commonly used frequency when using RFID technology, the transparency is low. There are about 20 casino chips that can be held in one hand, but when 20 are stacked in a pile, the reader under the table cannot recognize all 20 casino chips.

In addition, when RFID technology using 13.56MHz frequency is applied to casino chip, it usually has recognition distance of less than 10cm, and if power is increased to increase recognition distance, interference with other RFID tags within 40cm will occur. There was a problem that the information can not be correctly recognized.

The present invention has been made to solve the above problems, the casino chip embedded RFID chip which can prevent the RFID circuit integrated circuit or antenna from being damaged by high temperature and pressure during the manufacturing process of the casino chip The purpose is to provide.

In addition, by selecting and using a specific range of frequencies, it is possible to provide casino chips with RFID tags that can accurately recognize about 20 casino chips simultaneously, which is the maximum number of casino chips stacked in one hand. have.

In addition, it is an object of the present invention to provide a casino chip embedded with an RFID tag that can reduce the interference distance with the surrounding reading area.

In addition, an object of the present invention is to provide a casino chip embedded with an RFID tag including an antenna capable of improving communication performance.

According to the present invention, there is provided a method for manufacturing a casino chip incorporating an RFID tag according to the present invention, in the method for manufacturing a casino chip incorporating an RFID tag including an integrated circuit and an antenna. Preparing a formed plate; (B) mounting the integrated circuit and the antenna connected to the integrated circuit in the groove; And (C) forming a case to surround the outer surface of the plate.

Step (C) further includes forming a passivation layer on the integrated circuit and the antenna before forming the case.

Step (C) further includes adhering the integrated circuit and the antenna to the groove of the plate before forming the case.

The antenna is characterized by consisting of a winding wound a plurality of times on the outside of the integrated circuit.

The RFID tag has a frequency of 20 MHz or more and 25 MHz or less.

Step (A) further includes the step of forming one or more holes in the plate.

Step (A) further includes the step of forming a recess around the hole.

In the step (A), the plate is characterized in that made of a mixture of nylon and copper.

The case consists of a first case and a second case, the step (C) comprises the steps of injection molding the first case to surround the outer surface of the plate; And injection molding the second case to surround the outer surface of the first case, wherein either one of the first case or the second case includes a pattern or an amount of money.

In the step (C), the protective film is formed of an epoxy-based molding liquid.

In the step (B), when the antenna has a diameter of 22 mm or more and 27 mm or less, the antenna is formed of five or more windings.

The RFID tag has a frequency of 21 MHz or more and 24 MHz or less.

The manufacturing method further includes (D) attaching the decal to at least one of the central upper and lower surfaces of the plate.

The decal is characterized in that the magnetic sheet.

The manufacturing method of the casino chip embedded with the RFID tag according to the present invention as described above has the following effects.

The method for manufacturing a casino chip incorporating an RFID tag according to the present invention has an effect of preventing the RFID tag from being damaged by high temperature and pressure by forming a protective film on the integrated circuit and the antenna.

In addition, according to the present invention, a method for manufacturing a casino chip incorporating an RFID tag includes a built-in RFID tag having a frequency of 20 MHz or more and 25 MHz or less, thereby stacking about 20 casino chips, the maximum number of casino chips, which can be held in one hand. At the same time, there is an effect that can be accurately recognized.

In addition, the manufacturing method of the casino chip embedded with the RFID tag according to the present invention has the effect of reducing the interference distance with the surrounding reading area from the existing 40cm to 3cm or less.

In addition, the method of manufacturing a casino chip embedded with an RFID tag according to the present invention improves communication performance by using an antenna made of windings, saves space, and fills a high specific gravity material in the space to achieve a desirable weight of the casino chip. It can be effective.

Hereinafter, with reference to the accompanying drawings, a method for manufacturing a casino chip embedded with an RFID tag according to the present invention will be described in detail.

1A to 1F are process plan views showing an embodiment of a method of manufacturing a casino chip incorporating an RFID tag according to the present invention, and FIGS. 2A to 2F are the present invention according to AA ′ of FIGS. 1A to 1F. The process sectional drawing which showed one Example of the manufacturing method of the casino chip | tip which embeds the RFID tag by FIG.

In one embodiment of the method for manufacturing a casino chip embedded with an RFID tag according to the present invention, as shown in FIGS. 1A and 2A, first, a plate 112 having a groove 114 is manufactured. After the plate 112 is manufactured using a mixture of nylon and copper powder or powder form, the groove 114 may be formed at a predetermined position. At this time, by manufacturing the plate 112 using nylon and copper, it is possible to minimize the noise effect on the frequency at which the RFID communication is made, and to withstand high temperature and pressure in the manufacturing process. In addition, it is possible to adjust the content of copper, which is a rather high specific gravity material for the manufacture of casino chips having a suitable weight for play.

The plate 112 may further include one or more holes 116 and recesses 126 around the holes 116, the holes 116 having a circumference of a circle having a constant radius from the center of the plate 112. It is preferable to form at regular intervals. The holes 116 and recesses 126 may facilitate injection molding in the manufacturing process described later. In particular, the hole 116a formed at a position adjacent to the integrated circuit 150 is very effective for protecting the integrated circuit 150 and the antenna 170 and maintaining the strength of the groove 114 in the injection molding process.

1B and 2B, the RFID tag 160 is mounted in the groove 114 of the plate 112. In this case, the RFID tag 160 includes an integrated circuit 150 and an antenna 170.

The integrated circuit 150 is a complex electronic device or system in which many electronic circuit devices are combined on a substrate or in a state in which the electronic circuit device is not separated, and stores information on a casino chip. That is, information such as a unique ID of the casino chip, an allocated amount, and the like are stored in the integrated circuit 150.

Antenna 170 is connected to the integrated circuit 150, it is preferable to form a winding wound a plurality of times on the outside of the integrated circuit 150. The antenna 170 may communicate using the RFID tag 160 having a frequency of 20 MHz or more and 25 MHz or less, thereby transmitting information stored in the integrated circuit 150 and receiving updated information from the outside. That is, when a player bets on a casino chip at a table, information about the number and amount of casino chips in a certain betting area is transmitted, and a separate display device (not shown) by converting the bet amount through the transmitted information. Can be represented.

At this time, the antenna 170 may be made of a winding wound around a circle having a constant radius from the center of the plate 112, if the winding is wound more than five times when the diameter is 22mm or more and 27mm or less RFID of 21MHz or more and 24MHz or less It is desirable to have a frequency.

In one embodiment of the present invention, the antenna 170 is made of a winding wound around the outside of the integrated circuit 150 to ensure that the RFID tag 160 has a frequency of 20MHz or more and 25MHz or less, but the present invention is limited thereto. The antenna may be formed on an PCB (Printed Circuit Board) substrate by etching or may be formed using conductive ink.

However, when the winding is used, it is superior in terms of achieving the desirable weight of the casino chip by filling the material with a high specific gravity in the space by saving the frequency stability, durability due to the property that can withstand the injection pressure, and PCB space.

The RFID technology used in the embodiment of the method for manufacturing a casino chip embedded with an RFID tag according to the present invention may use both passive, semi-passive, and active RFID. According to an embodiment of the present invention, the windings of the integrated circuit 150 and the antenna 170 may be configured to use an RFID propagation frequency of 20 MHz or more and 25 MHz or less, preferably 21 MHz or more and 24 MHz or less. By performing RFID communication with the RFID tag 160 having a frequency in such a range, as shown in Table 1 below, even if the casino chips are stacked up to 20 to 25 casino chips reader (not shown) is a casino chip Each piece of information stored in the integrated circuit 150 can be accurately recognized.

RFID tag frequency (MHz) 13.96 19 20 21 ... 24 25 26 Number of casino chips in a pile that the reader can read 12-13 18 20 23 ... 22 20 18 stability Instability Instability stability stability ... stability stability Instability

In this case, when one casino chip and the casino chip reader performs RFID communication, an RFID radio frequency of 20 MHz or more and 25 MHz or less, preferably 21 MHz or more and 24 MHz or less, which is an inherent frequency of the RFID tag 160 embedded in the casino chip. Although communication is performed by using a plurality of casino chips, the casino chip pile 200 and the casino chip reader 300 has a variation in the frequency with which the communication, the actual communication frequency is 20MHz or more 25MHz or less frequency range You may escape. However, even if the RFID communication is performed outside the inherent frequency range of the RFID tag 160 embedded in the casino chip of the present invention, the casino chip reader can accurately read the information of the casino chip according to the present invention.

In addition, by performing the RFID communication using the frequency of the casino chip of 20MHz or more and 25MHz or less, preferably 21MHz or more and 24MHz or less, the interference distance with the surrounding reading area can be reduced to 3cm or less. The interference distance at this time means the interference distance generated when 20 or more casino chips are stacked.When 10 casino chips are stacked as shown in Table 2 below, the interference distance can be reduced to 2.5cm or less, The time can be reduced below that. Hereinafter, the 'interference distance' refers to the distance at which interference occurs when 20 or more casino chips are stacked.

Number of casino chips in one pile 25 20 15 10 things 5 Interference distance 3.2 cm 3 cm 2.8 cm 2.5cm 1.8 cm

Therefore, when there are a plurality of casino chip piles 200 having a plurality of casino chips 100 stacked therein, if the distance between adjacent casino chip piles is 3 cm or more apart, the casino chip reader may be connected to the integrated circuit 150 of the casino chip without interference. The stored information can be read correctly.

As illustrated in FIGS. 1C and 2C, the passivation layer 118 is formed on the RFID tag 160. By forming the protective film 118, it is possible to prevent the RFID tag 160 from being damaged from high temperature and pressure in the injection molding process to be described later. The protective film 118 is preferably formed to pour the epoxy-based molding liquid on the RFID tag 160 and then harden to fill the groove 114. Epoxy is one of thermosetting plastics, and may block the RFID tag 160 from the outside to protect it from the influence of the external environment.

In an embodiment of the present invention, the protective film 118 is formed on the RFID tag 160, but the present invention is not limited thereto. After the RFID tag 160 is attached to the groove 114 of the plate 112, the protective film 118 is formed. You can also proceed with the process.

As shown in FIGS. 1D and 2D, the first case 120a is formed to surround the outer surface of the plate 112. The first case 120a may be formed to have a protrusion having a predetermined shape on an outer surface thereof.

As shown in FIGS. 1E and 2E, the second case 120b is formed to surround the outer surface of the first case 120a. The second case 120a is formed to fill a portion where the protrusion is not formed on the outer surface of the first case 120a. That is, by forming the first case 120a and the second case 120b by two moldings, the case 120 having a constant pattern is formed.

The first case 120a and the second case 120b may be formed by injection molding of a material such as plastic or pottery, but any material or any molding method having a certain strength and protection function may be used. .

In an embodiment of the present invention, the case 120 is formed by two injection moldings, and the pattern is shown. The case 120 is also formed on the lower surface of the plate 112, but the present invention is not limited thereto. In addition, the case 120 may be formed by one injection molding or three or more injection moldings.

In addition, when the first case 120a and the second case 120b are formed by separate processes by two or more injection molding processes, the first case 120a and the second case 120b of the completed casino chip are mutually different. It can be distinguished by other colors. Through this, when the pattern, the amount of money, etc. are molded in only one of the first case (120a) or the second case (120b), the pattern, the amount of forgery, the modulation of the casino chip is virtually impossible, It has the advantage of not being removed or worn easily even if it is subjected to strong impact or long use.

As shown in FIGS. 1F and 2F, it is desirable to attach the decal 122 to the central upper and lower surfaces of the plate 112. The decal 122 may be attached to the casino logo printed on the center portion of the casino chip. Although the decal 122 is shown as being attached to both outer surfaces of the plate 112 in the drawing, the present invention is not limited thereto, and may be attached only to one outer surface.

At this time, the decal 122 attached to one outer surface of the plate 112 may be made of a magnetic sheet. By attaching the decal 122 made of a magnetic sheet to the casino chip, the magnetic detection system for preventing theft of the casino chip installed in the entrance and exit of the existing casino can be used as it is. That is, existing equipment can be used without reinstalling the casino chip anti-theft system. However, in order to prevent theft of a casino chip embedded with an RFID tag, it is desirable to install an RFID detection system at a place where security is required such as an entrance and a casino chip storage location of a casino.

In the exemplary embodiment of the present invention, a method of manufacturing a circular casino chip has been illustrated and described. However, the present invention is a method of manufacturing French chips of rectangular, square, circular, and oval, as well as circular American chips. It can also be applied to manufacturing. Accordingly, the shape of the plate and the case, the form in which the winding of the antenna is wound, etc. can be appropriately changed.

In addition, in the case of the American chip, the size of the casino chip is 39mm, 41mm, 43mm, 45mm, it can be manufactured by appropriately designing the size of the plate and the size of the case according to what size casino chips to manufacture.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains can be changed and modified within the scope of the present invention. .

1A to 1F are process plan views showing one embodiment of a method for manufacturing a casino chip incorporating an RFID tag according to the present invention.

Figures 2a to 2f is a cross-sectional view showing an embodiment of a method of manufacturing a casino chip embedded with an RFID tag according to the present invention according to AA 'of Figs. 1a to 1f.

Claims (14)

In the manufacturing method of a casino chip embedded with an RFID tag including an integrated circuit and an antenna, (A) manufacturing a grooved plate; (B) mounting the integrated circuit and the antenna connected to the integrated circuit in the groove; And (C) forming a case by injection molding to surround the outer surface of the plate, Step (A) is Forming one or more holes (116) in the plate; And And forming recesses 126 around the holes, The one or more holes 116, characterized in that it comprises a hole (116a) formed in a position adjacent to the integrated circuit, Manufacturing method of casino chip embedded RFID tag. The method of claim 1, Step (C) is Before forming the case, The method may further include forming a passivation layer on the integrated circuit and the antenna. Manufacturing method of casino chip embedded RFID tag. The method of claim 1, Step (C) is Before forming the case, Adhering the integrated circuit and the antenna to a groove of the plate; Manufacturing method of casino chip embedded RFID tag. The method of claim 1, The antenna is characterized in that consisting of a winding wound a plurality of times on the outside of the integrated circuit, Manufacturing method of casino chip embedded RFID tag. The method of claim 1, The RFID tag has a frequency of 20MHz or more and 25MHz or less, Manufacturing method of casino chip embedded RFID tag. delete delete The method of claim 1, In the step (A), The plate, Characterized in that it is made of a mixture of nylon and copper, Manufacturing method of casino chip embedded RFID tag. The method of claim 1, The case consists of a first case and a second case, Step (C) is Injection molding the first case to surround the outer surface of the plate; And Injection molding the second case to surround the outer surface of the first case, Characterized in that either one of the first case or the second case comprises a pattern or amount of money, Manufacturing method of casino chip embedded RFID tag. The method of claim 2, In the step (C), The protective film is characterized in that formed with an epoxy-based molding liquid, Manufacturing method of casino chip embedded RFID tag. The method of claim 4, wherein In the step (B), When the antenna is a diameter of less than 22mm and less than 27mm, characterized in that the winding made of at least five times, Manufacturing method of casino chip embedded RFID tag. The method of claim 11, The RFID tag has a frequency of 21MHz or more and 24MHz or less, Manufacturing method of casino chip embedded RFID tag. The method of claim 1, The manufacturing method, (D) further comprising attaching a decal to at least one of the central upper and lower surfaces of the plate, Manufacturing method of casino chip embedded RFID tag. The method of claim 13, Characterized in that the decal comprises a magnetic sheet, Manufacturing method of casino chip embedded RFID tag.

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