A three-dimensional antenna radio frequency tag and its manufacturing process

Abstract

The present invention discloses a three-dimensional antenna radio frequency tag and its manufacturing process in the field of radio frequency tag technology. The radio frequency tag includes a radio frequency chip connecting piece assembly, a coating layer and an insulating plate. The coating layer is coated on the surface of the insulating plate, and a gap is provided at the connection between the two ends of the coating layer to form an opening; the radio frequency chip connecting piece assembly is arranged on the upper side of the coating layer, the position of the radio frequency chip in the radio frequency chip connecting piece assembly corresponds to the position of the opening, and the two ends of the radio frequency chip connecting piece assembly are respectively connected to the coating layers on the left and right sides of the opening; the process includes the steps of preparing the radio frequency chip connecting piece assembly, preparing materials, bonding the insulating plate to the coating layer, folding the coating layer, positioning and cutting, dipping in paint, and pasting product labels. The present invention can obtain the best radio frequency performance, high read and write sensitivity, wide range, and is suitable for processing in automated production lines, with high production efficiency and low cost, which is conducive to large-scale production and promotion, and promotes the informatization of the manufacturing industry.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency tags, and in particular to a three-dimensional antenna radio frequency tag and a manufacturing process thereof. Background Art

[0002] With the development of science and technology, the application of radio frequency tags is increasing. The antenna in traditional radio frequency tags is a plane graphic, which will be affected by the background material of the tag during specific application. For example, the absorption and attenuation of radio frequency energy by metal and liquid materials will cause the radio frequency tag to fail.

[0003] In order to overcome the above defects, absorbing materials can be added to the back of the flat graphic RFID tag, which can reduce the impact of metal on the RFID tag, but its manufacturing cost is high and the RFID reading sensitivity is still low. In addition, there is also a method of silver-plating the four sides of the ceramic plate to make a RFID tag with a three-dimensional antenna, which can be pasted on metal for RFID reading and writing, but this method not only has a high manufacturing cost, but also has a low reading sensitivity, and can only be used for RFID reading and writing within a range of tens of millimeters.

[0004] The above defects are worth solving. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a three-dimensional antenna radio frequency tag and a manufacturing process.

[0006] The technical solution of the present invention is as follows:

[0007] A three-dimensional antenna radio frequency tag, including a radio frequency chip connecting piece assembly, characterized in that it also includes a covering layer and an insulating plate, the covering layer is covered on the surface of the insulating plate, and a gap is provided at the connection between the two ends of the covering layer to form an opening; the radio frequency chip connecting piece assembly is arranged on the upper side of the covering layer, the position of the radio frequency chip in the radio frequency chip connecting piece assembly corresponds to the position of the opening, and the two ends of the radio frequency chip connecting piece assembly are respectively connected to the covering layer on the left and right sides of the opening.

[0008] The present invention according to the above scheme is characterized in that the RF chip connecting sheet assembly includes the RF chip, an aluminum foil connecting sheet and a bottom film, and the RF chip is fixed to the bottom film through the aluminum foil connecting sheet.

[0009] Furthermore, the base film is a PET base film.

[0010] Furthermore, the size of the aluminum foil connecting piece is larger than the size of the radio frequency chip.

[0011] Furthermore, the size of the base film is larger than the size of the aluminum foil connecting piece.

[0012] Furthermore, the aluminum foil connecting sheet, the bottom film and the covering layer are bonded and fixed together by glue.

[0013] The present invention according to the above aspect is characterized in that the coating layer is aluminum foil or copper foil.

[0014] The present invention according to the above scheme is characterized in that the insulating plate material is a PP material plate.

[0015] The present invention according to the above aspect is characterized in that the unfolded width of the covering layer is twice the width of the insulating plate material.

[0016] The present invention according to the above scheme is characterized in that the thickness of the insulating plate is 1-2 mm.

[0017] On the other hand, a manufacturing process of a three-dimensional antenna radio frequency tag is characterized by comprising the following steps:

[0018] (1) Prepare the RF chip connector assembly for standby use;

[0019] (2) Prepare coating coils and insulation sheets;

[0020] (3) applying adhesive glue on the inner side of the coating coil and bonding the bottom surface of the insulating sheet to the coating coil;

[0021] (4) folding the covering layer upward so that the covering layer is folded and the folded portion is attached to the insulating sheet;

[0022] (5) applying adhesive glue on the surface of the RF chip connecting piece assembly;

[0023] (6) Covering the RF chip connection sheet assembly on the covering layer so that the position of the RF chip in the RF chip connection sheet assembly corresponds to the opening;

[0024] (7) Positioning and cutting: cutting the insulating plate according to a set width W so that the RF chip is located at the center of the cutting width;

[0025] (8) Dipping paint;

[0026] (9) Paste the product label to form a three-dimensional antenna radio frequency label product.

[0027] The present invention according to the above scheme is characterized in that, in the step (1), the coating layer is chemically etched to produce a coil of aluminum foil connecting sheet; and the radio frequency chip and the base film are installed on the aluminum foil connecting sheet.

[0028] The present invention according to the above scheme is characterized in that, in the step (4), after the covering layer is folded upward, the folded edge is adhered to the insulating sheet by a pressing roller.

[0029] The beneficial effect of the present invention according to the above scheme is that the present invention is used as a radio frequency tag for metal materials, equipment, parts, accessories, or as a liquid product tag, a ceramic product radio frequency tag, to implement remote reading and writing; the present invention changes the length, width and thickness of the insulating plate, thereby changing the frequency characteristics and sensitivity of the antenna to obtain the best radio frequency performance, and the reading distance when attached to the metal plate reaches more than 4 meters, with high reading and writing sensitivity and a wide range; and the present invention is suitable for automated production line processing, with high production efficiency and low cost, which is conducive to large-scale production and promotion, and promotes the informatization of the manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 for Figure 1 Sectional view along AA direction.

[0032] Figure 3 It is a side schematic diagram of the present invention.

[0033] Figure 4 This is a schematic diagram of the radio frequency chip connecting sheet assembly roll in the present invention.

[0034] Figure 5 The invention provides a production process.

[0035] Figure 6 This is a schematic diagram of bonding the bottom surface of the insulating plate and the covering layer when making a three-dimensional antenna radio frequency tag according to the present invention.

[0036] Figure 7 This is a schematic diagram of the coating layer being folded upward when making a three-dimensional antenna radio frequency tag according to the present invention.

[0037] Figure 8 This is a schematic diagram of the folded edge of the coating layer when making a three-dimensional antenna radio frequency tag according to the present invention.

[0038] Fig. 9 This is a schematic diagram of the radio frequency chip connecting piece assembly covering the covering layer when making a three-dimensional antenna radio frequency tag according to the present invention.

[0039] Fig.10 This is a schematic diagram of the correspondence between the chip and the opening when making a three-dimensional antenna radio frequency tag according to the present invention.

[0040] In the figure, 1. RF chip; 2. Aluminum foil connecting piece; 3. Base film; 4. Coating layer; 5. Insulating plate; 6. Opening. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0042] like Figures 1 to 4 As shown, a three-dimensional antenna radio frequency tag includes a radio frequency chip connecting piece assembly, a coating layer 4 and an insulating plate 5.

[0043] The RF chip connecting sheet assembly includes a RF chip 1, an aluminum foil connecting sheet 2 and a bottom film 3, and the RF chip 1 is fixed to the bottom film 3 through the aluminum foil connecting sheet 2. The size of the aluminum foil connecting sheet 2 is larger than that of the RF chip 1, the size of the bottom film 3 is larger than that of the aluminum foil connecting sheet 2, and the aluminum foil connecting sheet 2, the bottom film 3 and the covering layer 4 are bonded and fixed together by glue.

[0044] The coating layer 4 is coated on the surface of the insulating plate 5, and a gap is provided at the connection between the two ends of the coating layer 4 to form an opening 6. Specifically, the unfolded width of the coating layer 4 is twice the width of the insulating plate 5, so that the coating layer 4 can be folded up to form an opening 6 corresponding to the RF chip 1. Preferably, the thickness of the insulating plate 5 is 1-2 mm, so that an opening 6 with a width of 2-4 mm can be formed.

[0045] The RF chip connecting plate assembly is arranged on the upper side of the covering layer 4 , the position of the RF chip 1 in the RF chip connecting plate assembly corresponds to the position of the opening 6 , and the two ends of the RF chip connecting plate assembly are respectively connected to the covering layer 4 on the left and right sides of the opening 6 .

[0046] Preferably, the base film 3 is a PET base film, the coating layer 4 is an aluminum foil or a copper foil, and the insulating plate 5 is a PP plate. The present invention uses common materials such as PP plate, PET base film, aluminum foil or copper foil, and has high automated production efficiency and low manufacturing cost, which is conducive to large-scale application in the storage and logistics of metal equipment, accessories, electronic products, and medicines, and promotes the informatization of the manufacturing industry.

[0047] like Figure 5 As shown, a manufacturing process of a three-dimensional antenna radio frequency tag includes the following steps:

[0048] 1. Prepare the RF chip connector assembly and set it aside.

[0049] The coating layer 4 is chemically etched to produce a coil of aluminum foil connecting sheets; the spacing between the aluminum foil connecting sheets 2 is the width W of the PP board, and then the RF chip 1 and the bottom film 3 are installed on the aluminum foil connecting sheets 2.

[0050] 2. Prepare the coating coils and insulation sheets.

[0051] By changing the thickness, width and length of the insulating plate 5 and covering it with the coating layer 4, the RF chip connector assembly is installed, and its RF effect is tested, the optimized thickness H, width W and length L are selected to form a three-dimensional RF resonant cavity size.

[0052] Cut the insulating sheet (PP sheet) with a thickness of H into insulating sheets with a width of L; cut the 15-micron coating layer (aluminum foil or copper foil) into coating layer coils with a width of L.

[0053] 3. In Figure 5 , Figure 6 In the process, adhesive glue is applied on the inner side of the covering layer coil, and the bottom surface of the insulating sheet is bonded to the covering layer coil.

[0054] 4. In Figure 5 , Figure 7 , Figure 8 In the process, the covering layer 4 is folded upward so that the covering layer 4 is folded and the folded portion is attached to the insulating plate 5.

[0055] After the covering layer 4 is folded upward, the folded edge passes through a pressing roller, so that the covering layer 4 is evenly attached to the upper and lower sides of the insulating plate 5. Since the width of the covering layer 4 is 2L, which is only the sum of the upper and lower lengths of the insulating plate 5, and the thickness of the insulating plate 5 is 1-2mm, the covering layer 4 covers the insulating plate 5 to form an opening 6 in the middle, and the width of the opening 6 is 2-4mm.

[0056] 5. Apply adhesive glue on the surface of the RF chip connector assembly.

[0057] 6. In Figure 5 , Fig. 9 , Fig.10 In the process, the RF chip connecting sheet assembly is covered on the covering layer so that the position of the RF chip in the RF chip connecting sheet assembly corresponds to the opening.

[0058] 7. Positioning cutting: cut the insulating sheet according to the set width W so that the RF chip is located at the center of the cutting width.

[0059] 8. Dip in paint.

[0060] Wrap the three-dimensional antenna RFID tag with varnish to prevent the aluminum foil from lifting.

[0061] 9. Paste the product label to form a three-dimensional antenna radio frequency label product.

[0062] The present invention coats the insulating plate with a coating layer in the width direction, and the upper and lower coating layers of the insulating plate form a W×L×H three-dimensional antenna. A radio frequency chip is installed at the opening of the coating layer to form a three-dimensional radio frequency tag. By changing the thickness, width, and length of the insulating plate, the frequency characteristics and sensitivity of the three-dimensional radio frequency antenna can be changed to obtain the best radio frequency performance, and the reading distance can reach more than 4 meters when attached to a metal plate. The present invention adopts general materials such as PP board, aluminum foil, and copper foil. The automated production has high production efficiency and low manufacturing cost. It is conducive to large-scale application in the storage and logistics of metal equipment, accessories, electronic products, and medicines, and promotes the informatization of the manufacturing industry. The present invention can read and write over long distances in metal, ceramic, and liquid material environments, and has a low manufacturing cost, which is convenient for large-scale promotion. It can be widely used in:

[0063] (1) Installed on a metal plate to become a mechanical equipment radio frequency tag for equipment management;

[0064] (2) Installed on metal accessories and parts, it becomes a metal radio frequency tag for identification and positioning in production and assembly lines, warehousing, and logistics, and is used for automatic inventory in warehouses;

[0065] (3) Installed on metal packaging, such as: RFID tags for milk powder, paint, coatings, canned food, moon cakes and other foods, for anti-counterfeiting and warehousing logistics;

[0066] (4) Installed on liquid packaging for anti-counterfeiting and warehousing logistics of food and daily chemical products;

[0067] (5) Installed on glass or porcelain for long-distance identification, such as automotive radio frequency tags;

[0068] (6) When installed in the medicine box, the aluminum foil of the medicine packaging will not affect the radio frequency reading and writing, thus promoting the informatization of medicine production, warehousing and logistics.

[0069] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0070] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A three-dimensional antenna radio frequency tag, including a radio frequency chip connecting piece assembly, characterized in that: It also includes a coating layer and an insulating plate, wherein the coating layer is coated on the surface of the insulating plate to form a three-dimensional antenna, and a gap is provided at the connection between the two ends of the coating layer to form an opening; the radio frequency chip connecting piece assembly is arranged on the upper side of the coating layer, the position of the radio frequency chip in the radio frequency chip connecting piece assembly corresponds to the position of the opening, and the two ends of the radio frequency chip connecting piece assembly are respectively connected to the coating layer on the left and right sides of the opening; The manufacturing process of the three-dimensional antenna radio frequency tag includes the following steps: (1) preparing a radio frequency chip connecting sheet assembly for standby use, and chemically etching the coating layer to produce a coil of aluminum foil connecting sheet; (2) Prepare coating coils and insulation sheets; (3) applying adhesive glue on the inner side of the coating coil and bonding the bottom surface of the insulating sheet to the coating coil; (4) folding the covering layer upward so that the covering layer is folded and the folded portion is attached to the insulating sheet; (5) applying adhesive glue on the surface of the RF chip connecting piece assembly; (6) Covering the RF chip connection sheet assembly on the covering layer so that the position of the RF chip in the RF chip connection sheet assembly corresponds to the opening; (7) Positioning and cutting: cutting the insulating plate according to a set width W so that the RF chip is located at the center of the cutting width; (8) Dipping paint; (9) Paste the product label to form a three-dimensional antenna radio frequency label product.

2. The three-dimensional antenna radio frequency tag according to claim 1, characterized in that: The RF chip connecting sheet assembly includes the RF chip, an aluminum foil connecting sheet and a bottom film, and the RF chip is fixed to the bottom film via the aluminum foil connecting sheet.

3. The three-dimensional antenna radio frequency tag according to claim 2, characterized in that: The size of the aluminum foil connecting piece is larger than that of the radio frequency chip.

4. The three-dimensional antenna radio frequency tag according to claim 2, characterized in that: The size of the base film is larger than that of the aluminum foil connecting piece.

5. The three-dimensional antenna radio frequency tag according to claim 2, characterized in that: The aluminum foil connecting sheet, the bottom film and the covering layer are bonded and fixed together by glue.

6. The three-dimensional antenna radio frequency tag according to claim 1, characterized in that: The coating layer is aluminum foil or copper foil.

7. The three-dimensional antenna radio frequency tag according to claim 1, characterized in that: The insulating sheet is a PP sheet.

8. The three-dimensional antenna radio frequency tag according to claim 1, characterized in that: In the step (1), a radio frequency chip and a base film are mounted on the aluminum foil connecting sheet.

9. The three-dimensional antenna radio frequency tag according to claim 1, characterized in that: In the step (4), after the covering layer is folded upward, the folded edge is adhered to the insulating sheet by a pressing roller.

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