Miniaturized flexible anti-metal electronic tag structure
By optimizing the structural design of flexible anti-metal electronic tags and combining high dielectric constant materials and conductive materials, the problem of impedance imbalance between the RF antenna and the chip is solved, the miniaturization and flexibility of the tag are achieved, the reading distance is enhanced, and printing function is supported.
Patent Information
- Application Number
- CN202422724714.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-08
AI Technical Summary
Existing miniaturized flexible anti-metal electronic tags have impedance matching mismatch between the RF antenna and the chip, which reduces the reading distance. In addition, traditional tags are expensive and thick, and cannot be printed on thermal transfer printers.
The structural design adopts surface layer, antenna and chip layer, vertical connection layer, flexible composite material layer, flexible insulation material layer and conductive medium layer. High dielectric constant materials and conductive materials are used, combined with strong coupling method to reduce antenna size and insulation layer thickness, ensuring impedance matching and flexibility.
The product has achieved a significant reduction in label size and thickness while ensuring impedance matching. It has good flexibility and can be printed on thermal transfer printers with an enhanced reading distance.
Smart Images
Figure CN223461887U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to label technical field especially is related to a kind of miniaturization flexible anti-metal electronic label structure. BACKGROUND
[0002] The application of ultra-high frequency electronic tag is very extensive, and the environment is variable, many managed articles are metal objects, such as cars, containers, computers, metal shelves, etc. However, when the ordinary wireless radio frequency tag is placed on the metal surface, the reading distance of the wireless radio frequency tag will be greatly reduced or even cannot be read. The demand for anti-metal wireless radio frequency tags is increasing, and the miniaturization of tags is also increasing.
[0003] During the miniaturization process of flexible anti-metal wireless radio frequency tag, the impedance matching of radio frequency antenna and chip will be out of adjustment, the reading distance will be significantly reduced, and the tag cannot be used normally. The existing miniaturization anti-metal tags are mostly made of ceramic, PCB and other hard materials, which have high cost. The thickness of the finished flexible anti-metal wireless radio frequency tag is generally more than 2mm, and it cannot be printed with data by using a thermal transfer printer.
[0004] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a miniaturization flexible anti-metal electronic tag structure. CONTENT OF THE UTILITY MODEL
[0005] The utility model mainly solves the technical problem of providing a miniaturization flexible anti-metal electronic tag structure, which greatly reduces the size of the tag radio frequency antenna and the thickness of the tag flexible insulating layer while ensuring the impedance matching of the radio frequency antenna and the RFID chip. The product size and thickness are small, and it can be applied to various miniaturization scenarios.
[0006] To solve the above technical problems, one technical scheme of the utility model is provided: a miniaturization flexible anti-metal electronic tag structure is provided, which includes a surface layer, an antenna and chip layer, a vertical connection layer, a flexible composite material layer, a flexible insulating material layer and a conductive medium layer. The surface layer is pasted on the surface of the antenna and chip layer. The antenna and chip layer and the conductive medium layer are conductively connected through the vertical connection layer to form a coupling structure. The antenna and chip layer and the conductive medium layer are separated by the flexible insulating material layer to reduce the influence of metal eddy current on the tag radio frequency signal. The flexible composite material layer is pasted on the flexible insulating material layer by double-sided adhesive. The flexible composite material layer is made of high dielectric constant material, which can effectively reduce the size of the tag antenna and the thickness of the flexible insulating layer.
[0007] Preferably, the flexible composite material layer is made of PTFE polymer film material or PP polymer film material, etc., and the thickness is 0.1mm.
[0008] Preferably, the antenna and chip layer of the antenna is designed in a strong coupling mode, and the impedance of the RFID chip is conjugated, so that the reading distance of the tag is maximized, the antenna is made of conductive material, and the material is one of aluminum, copper, iron or silver, the thickness of the antenna and chip layer is less than or equal to 0.01mm, which can ensure the conductivity of the material and achieve the characteristics of softness and bendability.
[0009] Preferably, the vertical connecting layer is a conductive material.
[0010] Preferably, the flexible insulating material layer is made of PE closed-cell foam, and the thickness is 0.5mm, which is characterized by flexibility.
[0011] Preferably, the conductive medium layer material is an aluminum foil of PET substrate, the thickness of PET is 0.05mm, the aluminum layer is a conductive layer, and the thickness is 0.01mm, which provides conductivity and flexibility.
[0012] Preferably, the conductive medium layer material is a flexible material such as copper foil, printed silver layer or graphene.
[0013] Preferably, the surface layer is made of PET, PP, PC, copper plate paper and other flexible printable materials, which can protect the antenna and chip layer, and provide black and white and color printing of bar code, text, number, image and other marks.
[0014] Preferably, the small-sized flexible anti-metal electronic tag is attached to the managed object by industrial double-sided adhesive, and the industrial double-sided adhesive material is an adhesive material such as acrylic adhesive without substrate, foam adhesive, adhesive with substrate and silicone, which has large adhesion and can be applied to various surfaces.
[0015] Compared with the prior art, the utility model has the advantages that:
[0016] Compared with the prior art, the utility model has the advantages that:
[0017] The product thickness is thin, the flexibility is good, the product is flexible and printable, and the product surface can be printed with bar code, number, text and image marks by using a printer;
[0018] The product size is small, and can be applied to various small-sized scenes. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 It is a small-sized flexible anti-metal electronic tag structure expansion structure schematic view.
[0020] Fig. 2 It is a structure schematic view of a small-sized flexible anti-metal electronic tag structure.
[0021] Fig. 3 It is a side view of a small-sized flexible anti-metal electronic tag structure.
[0022] Fig. 4 It is an antenna and chip layer top view of a small-sized flexible anti-metal electronic tag structure.
[0023] Wherein, 1, surface layer, 2, antenna and chip layer, 3, vertical connecting layer, 4, first double-sided adhesive layer, 5, flexible composite material layer, 6, second double-sided adhesive layer, 7, flexible insulating material layer, 8, third double-sided adhesive layer, 9, conductive dielectric layer, 10, industrial double-sided adhesive. DETAILED DESCRIPTION
[0024] The preferred embodiments of the utility model are described in detail below with reference to the drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.
[0025] Please refer to Figs. 1 to 4 The utility model embodiment includes:
[0026] A small-sized flexible anti-metal electronic tag structure includes a surface layer 1, an antenna and chip layer 2, a vertical connecting layer 3, a first double-sided adhesive layer 4, a flexible composite material layer 5, a second double-sided adhesive layer 6, a flexible insulating material layer 7, a third double-sided adhesive layer 8, a conductive dielectric layer 9 and an industrial double-sided adhesive 10.
[0027] The surface layer 1 is printable surface material, and the material is PET, PP, PC, copper plate paper or other flexible printable materials; the surface layer 1 can protect the antenna and chip layer 2 and can provide black and white and color printing of bar code, text, number, image and other identification.
[0028] The antenna of the antenna and chip layer 2 is conductive material, and the material is one of aluminum, copper, iron or silver; the thickness of the antenna and chip layer 2 is less than or equal to 0.01 mm, which can ensure the conductivity of the material and achieve the characteristics of softness and bendability; the antenna is designed in a strong coupling mode and is conjugated with the impedance of RFID chip, so that the reading distance of the tag is maximized.
[0029] The vertical connecting layer 3 is conductive material; the vertical connecting layer 3 conductively connects the second antenna and chip layer 2 and the ninth conductive dielectric layer 9, to realize the strong coupling of the antenna and chip layer 2 and the conductive dielectric layer 9.
[0030] The first double-sided adhesive layer 4 pastes the antenna and chip layer 2 to the flexible composite material layer 5.
[0031] The flexible composite material layer 5 adopts a high dielectric constant material, such as a PTFE polymer film material, a PP polymer film material, etc., and has a thickness of 0.1 mm, and is characterized by high dielectric constant and flexibility, and can be attached below the antenna and chip layer 2 to effectively reduce the size of the tag antenna and the thickness of the flexible insulation layer.
[0032] The second double-sided adhesive layer 6 is used for attaching the flexible composite material layer 5 with high dielectric constant to the flexible insulation material layer 7.
[0033] The flexible insulation material layer 7 separates the second antenna and chip layer 2 and the ninth conductive medium layer 9, reduces the influence of metal eddy current on the tag radio frequency signal, and is made of PE closed-cell foam, and has a thickness of 0.5 mm, and is characterized by flexibility.
[0034] The third double-sided adhesive layer 8 is used for attaching the flexible insulation material layer 7 to the conductive medium layer 9.
[0035] The conductive medium layer 9 forms a coupling structure with the antenna chip layer 2 through the vertical connecting layer 3, is made of an aluminum foil based on PET material, the PET has a thickness of 0.05 mm, the aluminum layer is a conductive layer and has a thickness of 0.01 mm, and provides conductivity and flexibility; the conductive medium layer 9 can also be made of a copper foil, a printed silver layer or a graphene flexible material.
[0036] The industrial double-sided adhesive 10 is used for attaching the miniaturized flexible anti-metal electronic tag to the managed article, is made of an acrylic adhesive without a substrate, has high adhesion and can be applied to various surfaces; and the material of the layer can be a foam adhesive, a double-sided adhesive with a substrate, a silicone adhesive and other materials with adhesion.
[0037] The utility model discloses a kind of miniaturized flexible anti-metal electronic tag structure product size 30* 20 *1.0mm, working frequency is 902-928MHz, when the product is attached to metal surface, the reading distance of fixed reader is 3 meters, and the product is flexible and can be printed anti-metal RFID electronic tag.
[0038] The utility model discloses a kind of miniaturized flexible anti-metal electronic tag structure, increase a layer of flexible composite material with high dielectric constant, greatly reduce the size of tag radio frequency antenna and the thickness of tag flexible insulation layer under the condition of guaranteeing radio frequency antenna and RFID chip impedance matching, product size, thickness is small, applied to various miniaturized scenes.
[0039] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structure or equivalent process transformation using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.
Claims
1. A miniaturized flexible metal resistant electronic tag structure, characterized by: It includes surface layer (1), antenna and chip layer (2), vertical connection layer (3), flexible composite material layer (5), flexible insulating material layer (7) and conductive medium layer (9), the surface layer (1) is pasted on the surface of the antenna and chip layer (2), the antenna and chip layer (2) and the conductive medium layer (9) are conductively connected through the vertical connection layer (3) to form a coupling structure, the antenna and chip layer (2) and the conductive medium layer (9) are separated by the flexible insulating material layer (7), which reduces the influence of metal eddy current on the label radio frequency signal, the flexible insulating material layer (7) is pasted with high dielectric constant flexible composite material layer (5) through double-sided adhesive, which is pasted under the antenna and chip layer (2) to effectively reduce the size of the label antenna and the thickness of the flexible insulating layer.
2. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The flexible composite material layer (5) is made of PTFE polymer film material or PP polymer film material, and the thickness is 0.1mm.
3. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The antenna of the antenna and chip layer (2) is designed in a strong coupling mode, which is conjugate with the impedance of RFID chip, the antenna is made of conductive material, and the material is one of aluminum, copper, iron or silver, and the thickness of the antenna and chip layer (2) is less than or equal to 0.01mm.
4. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The vertical connection layer (3) is made of conductive material.
5. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The flexible insulating material layer (7) is made of PE closed cell foam, and the thickness is 0.5mm.
6. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The conductive medium layer (9) is made of aluminum foil with PET substrate, the thickness of PET is 0.05mm, the aluminum layer is a conductive layer, and the thickness is 0.01mm.
7. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The conductive medium layer (9) is made of copper foil, printed silver layer or graphene flexible material.
8. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The surface layer (1) is made of PET, PP, PC, copper plate paper flexible printable material.
9. The miniaturized flexible metal-resistant electronic tag structure according to claim 1, wherein: The small flexible anti-metal electronic tag is pasted on the managed article by industrial double-sided adhesive (10), and the material of the industrial double-sided adhesive (10) is acrylic adhesive without substrate, foam adhesive, adhesive with substrate, and adhesive with silicon.