High-frequency RFID chip using internal antenna routing within the chip and label packaging structure

Abstract

The present invention discloses a high-frequency RFID chip and a tag packaging structure using internal antenna routing within the chip, mainly including an RFID chip, Antenna I, and Antenna II. In the present invention, two antennas are connected in series by connecting pins on the RFID chip, eliminating the need for cross-antenna connection and reducing the difficulty of the manufacturing process.

Description

Technical Field

[0001] The present invention relates to the field of RFID tags, and specifically to a high-frequency RFID chip and antenna packaging structure that can avoid jumper wiring. Background Art

[0002] Since the antenna of a high-frequency RFID electronic tag adopts the principle of transformer coupling, its antenna is usually a regular spiral pattern in the same direction. In the current flip-chip process, after the antenna is wound, it is usually necessary to use the method of riveting jumper wiring to lead back to another antenna pin. In the flip-chip process of RFID electronic tags, the riveted jumper wiring accounts for a very large proportion of the entire tag manufacturing cost, which is also an important reason why the cost of high-frequency RFID electronic tags is much higher than that of ultra-high-frequency RFID electronic tags.

[0003] In addition, after being mounted on a cylindrical object or folded and mounted on a sheet-like object, the magnetic flux formed by the antenna will become in the opposite direction, so the mutual cancellation between the magnetic fields will occur, resulting in the RFID electronic tag being unable to be read normally. In this patent, we propose a method of winding the antenna in series and in reverse.

[0004] The present invention adopts the method of routing the antenna inside the chip to eliminate the high-cost process link of riveting jumper wiring for the antenna of high-frequency RFID tags. Even though the method of this patent may slightly increase the chip cost, compared with reducing one process link during packaging, it is almost negligible. Therefore, the effect of this patent is extremely remarkable, effectively reducing the manufacturing cost of high-frequency RFID tags and providing a more economical and efficient solution for the larger-scale application of high-frequency RFID tags. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art.

[0006] The technical solution adopted to achieve the purpose of the present invention is as follows: a high-frequency RFID chip that uses internal routing of the antenna in the chip, characterized in that it includes an RFID chip (1); at least two antenna contact pins inside the RFID chip (1), and a number of connection contacts;

[0007] Two of the antenna contact pins are in a group and are used to connect the antenna of the RFID tag;

[0008] The antenna connected to the RFID chip is several turns, and both ends of each turn of the antenna are connected to the connection contact or the antenna contact pin; each connection contact and antenna contact pin are only connected to one end of one turn of the antenna;

[0009] The RFID chip (1) has a plurality of conductors inside; one conductor connects two of the connection contacts, so that a plurality of loop antennas are connected inside the RFID chip, thereby forming an integral antenna.

[0010] Based on the above chip, the present invention provides a high-frequency RFID tag packaging structure that utilizes the inside of the chip for antenna routing, characterized in that it includes an RFID chip (1), antenna I (2) and the antenna II (3).

[0011] The RFID chip (1), antenna I (2) and antenna II (3) are flipped and arranged in the electronic tag;

[0012] The RFID chip (1) is provided with two antenna contact pins and a plurality of connection contacts; the antenna I (2) and the antenna II (3) are located on both sides of the RFID chip (1);

[0013] The antenna I (2) and the antenna II (3) each include at least one antenna loop; both ends of each antenna loop are connected to the connection contacts or antenna contact pins of the RFID chip (1); each connection contact and antenna contact pin is only connected to one end of the antenna loop;

[0014] The connection contact connected to antenna Ⅰ(2) is recorded as a type A connection contact; the connection contact connected to antenna Ⅱ(3) is recorded as a type B connection contact;

[0015] A connection contact and an antenna contact pin are both connected to only one end of any coil antenna;

[0016] Each type A connection contact is connected to a type B connection contact through a conductor, so that antenna I (2) and antenna II (3) are connected to form a continuous integrated antenna; the two ends of the integrated antenna are respectively connected to two antenna contact pins.

[0017] Based on the above chip, the present invention provides a high-frequency RFID tag packaging structure that uses the inside of the chip for antenna routing, wherein antenna I (2) has n turns; antenna II (3) has m turns; n is a natural number greater than 1, m is a natural number, nm=1;

[0018] The two antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2;

[0019] The A-type connection contacts have 2n-2 numbers, all of which are located on the same side close to the antenna I (2) as the antenna contact pin L1 and the antenna contact pin L2. The A-type connection contacts are denoted as contact A1, contact A2, ... contact A (2n-2);

[0020] There are 2m Class B connection contacts, all on one side close to Antenna II (3), and the Class B contacts are denoted as Contact B1, Contact B2... Contact B2m;

[0021] One end of the first turn of Antenna I (2) is connected to the antenna contact pin L1, and the other end is connected to Contact A1;

[0022] ……

[0023] One end of the k-th turn of Antenna I (2) is connected to Contact A(2n - 2), and the other end is connected to the antenna contact pin L2; if n = 1, the k-th turn of Antenna I (2) is the first turn of Antenna I (2);

[0024] One end of the first turn of Antenna II (3) is connected to Contact B1, and the other end is connected to Contact B2;

[0025] ……

[0026] One end of the k-th turn of Antenna II (3) is connected to Contact B(2m - 1), and the other end is connected to Contact B2m; if m = 1, the m-th turn of Antenna II (3) is the first turn of Antenna II (3);

[0027] Contact B1 is connected to Contact A1 through a conductor;

[0028] ……

[0029] Contact B2m is connected to Contact A(2n - 2) through a conductor.

[0030] Based on the above chip, the present invention provides a high-frequency RFID tag packaging structure for antenna routing inside the chip, including an RFID chip (1) and an i-turn antenna, where i is a natural number greater than 1;

[0031] Two antenna contact pins and several connection contacts are provided on the RFID chip (1);

[0032] Both ends of each turn of the antenna are respectively connected to an antenna contact pin or a connection contact; among them: one end of the first turn of the antenna is connected to an antenna contact pin, and the other end is connected to a connection contact; one end of the i-th turn of the antenna is connected to the other antenna contact pin, and the other end is connected to a connection contact;

[0033] One connection contact and one antenna contact pin are each only connected to one end of any turn of the antenna;

[0034] Each connection contact is connected to another connection contact through a conductor, so that the i-turn antenna is connected into a continuous integrated antenna; both ends of the integrated antenna are respectively connected to 2 antenna contact pins.

[0035] Further, the operating frequency of the RFID chip is 13.56Mhz.

[0036] The technical effect of the present invention is beyond doubt. By connecting two antennas in series through the pins on the RFID chip, the present invention eliminates the need for cross-antenna connection, reducing the difficulty of the manufacturing process. Moreover, the reverse antenna enhances the antenna signal, solving the problem of magnetic field cancellation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the chip for Embodiment 1;

[0038] Figure 2 Schematic diagram of the label structure for Embodiment 4;

[0039] Figure 3 Schematic diagram of the label structure for Embodiment 5;

[0040] Figure 4 Schematic diagram of the label structure for Embodiment 7;

[0041] Figure 5 Schematic diagram of the label structure for Embodiment 10;

[0042] Figure 6 Schematic diagram of the label structure for Embodiment 11;

[0043] Figure 7 Schematic diagram of the label structure for Embodiment 12;

[0044] In the figures: RFID chip 1, Antenna I 2, Antenna II 3. DETAILED DESCRIPTION OF THE INVENTION

[0045] The present invention will be further described below in conjunction with the embodiments, but it should not be understood that the above-mentioned subject matter of the present invention is limited to the following embodiments only. Without departing from the above-mentioned technical idea of the present invention, various substitutions and changes made according to the common general knowledge and conventional means in the art shall all be included within the protection scope of the present invention.

[0046] In all embodiments, the operating frequency of the RFID chip is 13.56 MHz.

[0047] Embodiment 1:

[0048] See Figure 1 , a high-frequency RFID chip that uses internal chip antenna routing, characterized by: including an RFID chip (1); like the existing RFID chips, this chip has a radio frequency interface circuit unit, a calculation and control unit, and a storage unit.

[0049] This chip is connected to an external antenna through an external antenna connection unit.

[0050] The external antenna connection unit comprises at least two antenna contact pins inside the RFID chip (1) and a plurality of connection contacts;

[0051] The two antenna contact pins form a group and are used to connect the antenna of the RFID tag;

[0052] The antenna connected to the RFID chip is a plurality of circles, and both ends of each circle of the antenna are connected to the connection contacts or antenna contact pins; each connection contact and antenna contact pin is only connected to one end of a circle of the antenna;

[0053] The RFID chip (1) has a plurality of conductors inside; one conductor connects two of the connection contacts, so that a plurality of loop antennas are connected inside the RFID chip, thereby forming an integral antenna.

[0054] Embodiment 2:

[0055] Based on the above chip, this embodiment provides a high-frequency RFID tag packaging structure that uses the inside of the chip for antenna routing, which is characterized by comprising an RFID chip (1), antenna I (2) and the antenna II (3).

[0056] The RFID chip (1), antenna I (2) and antenna II (3) are flipped and arranged in the electronic tag;

[0057] The RFID chip (1) is provided with two antenna contact pins and a plurality of connection contacts; the antenna I (2) and the antenna II (3) are located on both sides of the RFID chip (1);

[0058] The antenna I (2) and the antenna II (3) each include at least one antenna loop; both ends of each antenna loop are connected to the connection contacts or antenna contact pins of the RFID chip (1); each connection contact and antenna contact pin is only connected to one end of the antenna loop;

[0059] The connection contacts connected to antenna Ⅰ(2) are recorded as type A connection contacts; the connection contacts connected to antenna Ⅱ(3) are recorded as type B connection contacts;

[0060] A connection contact and an antenna contact pin are both connected to only one end of any coil antenna;

[0061] Each type A connection contact is connected to a type B connection contact through a conductor, so that antenna I (2) and antenna II (3) are connected to form a continuous integrated antenna; the two ends of the integrated antenna are respectively connected to two antenna contact pins.

[0062] In the above embodiments, the current directions of the first antenna 2 and the second antenna 3 are opposite. When the RFID tag is flattened or slightly bent, the magnetic flux directions generated by the first antenna 2 and the second antenna 3 are also opposite. In this way, the magnetic flux cancellation effect occurs when the RFID tag is flattened or slightly bent. Only when the RFID tag is folded in half so that the first antenna 2 and the second antenna 3 are stacked together, and the magnetic flux directions are the same, can signals be transmitted and received.

[0063] Embodiment 3:

[0064] Based on the high-frequency RFID tag packaging structure using internal antenna routing of the chip in Embodiment 2, in this embodiment, each of the first antenna (2) and the second antenna (3) has k turns, where k is a natural number;

[0065] The turns of the first antenna (2) are distributed in sequence from the outside to the inside and do not intersect outside the RFID chip; the turns of the second antenna (3) are distributed in sequence from the outside to the inside and do not intersect outside the RFID chip.

[0066] The two antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2;

[0067] The class A connection contacts have 2k - 1, and all are on the same side close to the first antenna (2) as the antenna contact pin L1. The class A connection contacts are denoted as contact point A1, contact point A2... contact point A(2k - 1);

[0068] The class B connection contacts have 2k - 1, and all are on the same side close to the second antenna (3) as the antenna contact pin L2. The class B contacts are denoted as contact point B1, contact point B2... contact point B(2k - 1);

[0069] One end of the first turn of the first antenna (2) is connected to the antenna contact pin L1, and the other end is connected to the contact point A1;

[0070] ……

[0071] One end of the k-th turn of the first antenna (2) is connected to the contact point A(2k - 2), and the other end is connected to the contact point A(2k - 1); if k = 1, the k-th turn is the first turn;

[0072] One end of the first turn of the second antenna (3) is connected to the contact point B1, and the other end is connected to the contact point B2;

[0073] ……

[0074] One end of the k-th turn of the second antenna (3) is connected to the contact point B(2k - 1), and the other end is connected to the antenna contact pin L2; if k = 1, the k-th turn is the first turn;

[0075] The contact point B1 is connected to the contact point A1 through a conductor;

[0076] ……

[0077] The contact B(2k - 1) is connected to the contact A(2k - 1) through a conductor.

[0078] The above solution enables the reverse connection between the antenna I2 and the antenna II3, that is, the magnetic flux directions of the antenna I2 and the antenna II3 are opposite.

[0079] Embodiment 4:

[0080] According to the structure of the above Embodiment 3, as Figure 2 shown, the antenna I(2) and the antenna II(3) each have 1 turn;

[0081] The two antenna contact pins are respectively denoted as the antenna contact pin L1 and the antenna contact pin L2;

[0082] The type A connection contact has 1, and is on the same side as the antenna contact pin L1 close to the antenna I(2), and the type A connection contact is denoted as the contact A1;

[0083] The type B connection contact has 1, and is on the same side as the antenna contact pin L2 close to the antenna II(3), and the type B contact is denoted as the contact B1;

[0084] One end of the first turn of the antenna I(2) is connected to the antenna contact pin L1, and the other end is connected to the contact A1;

[0085] One end of the first turn of the antenna II(3) is connected to the contact B1, and the other end is connected to the antenna contact pin L2;

[0086] The contact B1 is connected to the contact A1 through a conductor.

[0087] Embodiment 5:

[0088] According to the structure of the above Embodiment 3, as Figure 3 shown, the antenna I(2) and the antenna II(3) each have 2 turns;

[0089] The two antenna contact pins are respectively denoted as the antenna contact pin L1 and the antenna contact pin L2;

[0090] The type A connection contact has 3, all on the same side as the antenna contact pin L1 close to the antenna I(2), and the type A connection contacts are denoted as the contact A1, the contact A2, and the contact A3;

[0091] The type B connection contact has 3, all on the same side as the antenna contact pin L2 close to the antenna II(3), and the type B contacts are denoted as the contact B1, the contact B2, and the contact B3;

[0092] One end of the first turn of the antenna I(2) is connected to the antenna contact pin L1, and the other end is connected to the contact A1;

[0093] One end of the second turn of antenna Ⅰ (2) is connected to contact point A2, and the other end is connected to contact point A3;

[0094] One end of the first turn of antenna Ⅱ (3) is connected to contact point B1, and the other end is connected to contact point B2;

[0095] One end of the second turn of the said antenna Ⅱ (3) is connected to contact point B3, and the other end is connected to antenna contact pin L2;

[0096] The said contact point B1 is connected to contact point A1 through a conductor;

[0097] The said contact point B2 is connected to contact point A2 through a conductor;

[0098] The said contact point B3 is connected to contact point A3 through a conductor.

[0099] Embodiment 6:

[0100] According to the high-frequency RFID tag packaging structure using internal antenna routing of the chip in Embodiment 2, in this embodiment, antenna Ⅰ (2) has n turns; antenna Ⅱ (3) has m turns; n is a natural number greater than 1, m is a natural number, and n - m = 1;

[0101] The two antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2;

[0102] The said type A connection contact points have 2n - 2, and are all on the same side as antenna contact pin L1 and antenna contact pin L2 close to antenna Ⅰ (2), and the said type A connection contact points are denoted as contact point A1, contact point A2... contact point A(2n - 2);

[0103] The said type B connection contact points have 2m, and are all on the side close to antenna Ⅱ (3), and the said type B contact points are denoted as contact point B1, contact point B2... contact point B2m;

[0104] One end of the first turn of antenna Ⅰ (2) is connected to antenna contact pin L1, and the other end is connected to contact point A1;

[0105] ……

[0106] One end of the kth turn of the said antenna Ⅰ (2) is connected to contact point A(2n - 2), and the other end is connected to antenna contact pin L2; if n = 1, the kth turn of antenna Ⅰ (2) is the first turn of antenna Ⅰ (2);

[0107] One end of the first turn of antenna Ⅱ (3) is connected to contact point B1, and the other end is connected to contact point B2;

[0108] ……

[0109] One end of the k-th turn of the antenna II (3) is connected to the contact B(2m - 1), and the other end is connected to the contact B2m; if m = 1, the m-th turn of the antenna II (3) is the first turn of the antenna II (3).

[0110] The contact B1 is connected to the contact A1 through a conductor.

[0111] ……

[0112] The contact B2m is connected to the contact A(2n - 2) through a conductor.

[0113] Embodiment 7:

[0114] According to the structure of Embodiment 6, refer to Figure 4 , the antenna I (2) has 2 turns; the antenna II (3) has 1 turn;

[0115] The two antenna contact pins are respectively denoted as the antenna contact pin L1 and the antenna contact pin L2;

[0116] There are 2 A-type connection contacts, both on the side close to the antenna I (2) together with the antenna contact pin L1 and the antenna contact pin L2, and the A-type connection contacts are denoted as the contact A1 and the contact A2;

[0117] There are 2 B-type connection contacts, both on the side close to the antenna II (3), and the B-type contacts are denoted as the contact B1 and the contact B2;

[0118] One end of the first turn of the antenna I (2) is connected to the antenna contact pin L1, and the other end is connected to the contact A1;

[0119] One end of the second turn of the antenna I (2) is connected to the contact A2, and the other end is connected to the antenna contact pin L2;

[0120] One end of the first turn of the antenna II (3) is connected to the contact B1, and the other end is connected to the contact B2;

[0121] The contact B1 is connected to the contact A1 through a conductor;

[0122] The contact B2 is connected to the contact A2 through a conductor.

[0123] Embodiment 8:

[0124] Based on Embodiment 2, this embodiment provides a high-frequency RFID tag packaging structure using internal antenna routing of a chip, which is characterized in that it includes an RFID chip (1) and an i-turn antenna, where i is a natural number greater than 1;

[0125] Two antenna contact pins and a number of connection contacts are provided on the RFID chip (1); each turn of the i-turn antenna is distributed in sequence from the outside to the inside and does not intersect outside the RFID chip.

[0126] Both ends of each turn of the antenna are respectively connected to an antenna contact pin or a connection contact; wherein: one end of the first turn of the antenna is connected to an antenna contact pin, and the other end is connected to a connection contact; one end of the i-th turn of the antenna is connected to another antenna contact pin, and the other end is connected to a connection contact;

[0127] A connection contact and an antenna contact pin are each only connected to one end of any one turn of the antenna;

[0128] Each connection contact is connected to another connection contact through a conductor, so that the i turns of the antenna are connected into a continuous integral antenna; both ends of the integral antenna are respectively connected to 2 antenna contact pins.

[0129] Embodiment 9:

[0130] Based on the structure of Embodiment 8, one end of the first turn of the antenna is connected to the antenna contact pin L1, and the other end is connected to a connection contact C1; one end of the second turn of the antenna is connected to the contact C2, and the other end is connected to a connection contact C3;...; one end of the (i - 1)-th turn of the antenna is connected to the contact C[2(i - 1) - 2], and the other end is connected to the contact C[2(i - 1) - 1]; one end of the i-th turn of the antenna is connected to the contact C(2i - 2), and the other end is connected to the antenna contact pin L2;

[0131] The contact C1 is connected to the contact C2 through a conductor, the contact C3 is connected to the contact C4 through a conductor,...; the contact C[2(i - 1) - 1] is connected to the contact C(2i - 2) through a conductor.

[0132] Embodiment 10:

[0133] Based on the structure of Embodiment 9, see Figure 5 , including 2 turns of the antenna; one end of the first turn of the antenna is connected to the antenna contact pin L1, and the other end is connected to a connection contact C1; one end of the second turn of the antenna is connected to the contact C2, and the other end is connected to the antenna contact pin L2; the contact C1 is connected to the contact C2 through a conductor.

[0134] Embodiment 11:

[0135] Based on the structure of Embodiment 9, see Figure 6 , including 3 turns of the antenna; one end of the first turn of the antenna is connected to the antenna contact pin L1, and the other end is connected to a connection contact C1; one end of the second turn of the antenna is connected to the contact C2, and the other end is connected to the antenna contact pin C3; one end of the third turn of the antenna is connected to the contact C4, and the other end is connected to the antenna contact pin L2;

[0136] The contact C1 is connected to the contact C2 through a conductor, and the contact C3 is connected to the contact C4 through a conductor.

[0137] Embodiment 12

[0138] Based on the structure of Embodiment 9, in the i-loop antenna, the first loop to the k-th loop of the antenna are denoted as antenna I2; the (k + 1)-th loop to the i-th loop of the antenna are denoted as antenna II3; k is a natural number greater than or equal to 1 and less than or equal to i;

[0139] Antenna I2 and antenna II3 are respectively located on both sides of the RFID chip.

[0140] Specifically, referring to Figure 7 , in the 3-loop antenna, the first loop and the second loop of the antenna are denoted as antenna I2; the third loop of the antenna is denoted as antenna II3; antenna I2 and antenna II3 are respectively located on both sides (above and below) of the RFID chip.

[0141] Specifically, one end of the first loop of the antenna is connected to the antenna contact pin L1, and the other end is connected to a connection contact C1; one end of the second loop of the antenna is connected to the contact C2, and the other end is connected to the antenna contact pin C3; the second loop of the antenna surrounds the outside of the first loop of the antenna.

[0142] The third loop of the antenna is antenna II3, one end of which is connected to the contact C4 and the other end is connected to the antenna contact pin L2.

[0143] In the above embodiment, the current directions of the antenna Ⅰ2 and the antenna Ⅱ3 are opposite. When the RFID tag is flattened or slightly bent, the magnetic flux directions generated by the antenna Ⅰ2 and the antenna Ⅱ3 are also opposite. This will cause the magnetic flux cancellation effect when the RFID tag is flattened or slightly bent. Only when the RFID tag is folded in half so that the antenna Ⅰ2 and the antenna Ⅱ3 are stacked together, the magnetic flux directions are the same, can the signal be transmitted and received.

Claims

1. A high-frequency RFID tag packaging structure with antenna traces inside the chip, characterized in that : comprising an RFID chip (1), an antenna I (2) and an antenna II (3); The RFID chip (1), antenna I (2) and antenna II (3) are flipped and arranged in the electronic tag; The RFID chip (1) is provided with two antenna contact pins and a plurality of connection contacts; the antenna I (2) and the antenna II (3) are located on both sides of the RFID chip (1); Antenna I (2) and antenna II (3) each include at least one antenna loop; both ends of each antenna loop are connected to connection contacts or antenna contact pins of the RFID chip (1); each connection contact and antenna contact pin is only connected to one end of the antenna loop; The connection contact connected to antenna Ⅰ (2) is recorded as a type A connection contact; the connection contact connected to antenna Ⅱ (3) is recorded as a type B connection contact; A connection contact and an antenna contact pin are both connected to only one end of any coil antenna; Inside the RFID chip, each type A connection contact is connected to a type B connection contact through a conductor, so that antenna I (2) and antenna II (3) are connected to form a continuous integrated antenna; the two ends of the integrated antenna are respectively connected to two antenna contact pins.

2. The high-frequency RFID tag packaging structure using the inside of the chip for antenna routing according to claim 1 is characterized in that: Antenna I (2) and antenna II (3) each have k turns, where k is a natural number; The two antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2; There are 2k-1 type A connection contacts, all of which are located on the same side as the antenna contact pin L1 close to the antenna I (2). The type A connection contacts are denoted as contact A1, contact A2, ... contact A (2k-1); There are 2k-1 type B connection contacts, all of which are located on the same side as the antenna contact pin L2 close to the antenna II (3). The type B connection contacts are denoted as connection contact B1, connection contact B2, ... connection contact B (2k-1); When k is greater than 1: One end of the first loop of antenna I (2) is connected to antenna contact pin L1, and the other end is connected to contact A1; one end of the second loop of antenna I (2) is connected to contact A2, and the other end is connected to contact A3; one end of the third loop of antenna I (2) is connected to contact A4, and the other end is connected to contact A5; and so on, one end of the kth loop of antenna I (2) is connected to contact A (2k-2), and the other end is connected to contact A (2k-1); One end of the first circle of antenna II (3) is connected to contact B1, and the other end is connected to contact B2; one end of the second circle of antenna II (3) is connected to contact B3, and the other end is connected to contact B4; one end of the third circle of antenna II (3) is connected to contact B5, and the other end is connected to contact B6; and so on, one end of the k-1th circle of antenna II (3) is connected to contact B (2k-3), and the other end is connected to contact B (2k-2); one end of the kth circle of antenna II (3) is connected to contact B (2k-1), and the other end is connected to antenna contact pin L2; Contact B1 is connected to contact A1 through a conductor; contact B2 is connected to contact A2 through a conductor; contact B3 is connected to contact A3 through a conductor; and so on, contact B (2k-1) is connected to contact A (2k-1) through a conductor; When k is equal to 1: One end of the first turn of antenna I (2) is connected to antenna contact pin L1, and the other end is connected to contact point A1; One end of the first turn of antenna II (3) is connected to contact point B1, and the other end is connected to antenna contact pin L2; Contact point B1 is connected to contact point A1 through a conductor.

3. The high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 2, characterized in that: Antenna I (2) and antenna II (3) each have one turn; The two antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2; There is one type A connection contact point, on the same side as antenna contact pin L1 near antenna I (2), and the type A connection contact point is denoted as contact point A1; There is one type B connection contact point, on the same side as antenna contact pin L2 near antenna II (3), and the type B connection contact point is denoted as contact point B1; One end of the first turn of antenna I (2) is connected to antenna contact pin L1, and the other end is connected to contact point A1; One end of the first turn of antenna II (3) is connected to contact point B1, and the other end is connected to antenna contact pin L2; Contact point B1 is connected to contact point A1 through a conductor.

4. The high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 2, characterized in that: Antenna I (2) and antenna II (3) each have two turns; The two antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2; There are three type A connection contact points, all on the same side as antenna contact pin L1 near antenna I (2), and the type A connection contact points are denoted as contact point A1, contact point A2, and contact point A3; There are three type B connection contact points, all on the same side as antenna contact pin L2 near antenna II (3), and the type B connection contact points are denoted as contact point B1, contact point B2, and contact point B3; One end of the first turn of antenna I (2) is connected to antenna contact pin L1, and the other end is connected to contact point A1; One end of the second turn of antenna I (2) is connected to contact point A2, and the other end is connected to contact point A3; One end of the first turn of antenna II (3) is connected to contact point B1, and the other end is connected to contact point B2; One end of the second turn of antenna II (3) is connected to contact point B3, and the other end is connected to antenna contact pin L2; Contact point B1 is connected to contact point A1 through a conductor; Contact point B2 is connected to contact point A2 through a conductor; Contact point B3 is connected to contact point A3 through a conductor.

5. The high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 1, characterized in that: Antenna I (2) has n turns; antenna II (3) has m turns; n is a natural number greater than 1, m is a natural number, and n - m = 1; The two antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2; There are 2n - 2 type A connection contact points, all on the same side as antenna contact pin L1 and antenna contact pin L2 near antenna I (2), and the type A connection contact points are denoted as contact point A1, contact point A2... contact point A(2n - 2); There are 2m type B connection contact points, all on the side near antenna II (3), and the type B connection contact points are denoted as contact point B1, contact point B2... contact point B2m; When n is greater than 2 and m is greater than 1: One end of the first turn of antenna Ⅰ (2) is connected to antenna contact pin L1, and the other end is connected to contact point A1; one end of the second turn of antenna Ⅰ (2) is connected to contact point A2, and the other end is connected to contact point A3; one end of the third turn of antenna Ⅰ (2) is connected to contact point A4, and the other end is connected to contact point A5; and so on. One end of the (n - 1)-th turn of antenna Ⅰ (2) is connected to contact point A(2n - 4), and the other end is connected to contact point A(2n - 3); one end of the n-th turn of antenna Ⅰ (2) is connected to contact point A(2n - 2), and the other end is connected to antenna contact pin L2; One end of the first turn of antenna Ⅱ (3) is connected to contact point B1, and the other end is connected to contact point B2; one end of the second turn of antenna Ⅱ (3) is connected to contact point B3, and the other end is connected to contact point B4; one end of the third turn of antenna Ⅱ (3) is connected to contact point B5, and the other end is connected to contact point B6; and so on. One end of the m-th turn of antenna Ⅱ (3) is connected to contact point B(2m - 1), and the other end is connected to contact point B2m; Contact point B1 is connected to contact point A1 through a conductor; contact point B2 is connected to contact point A2 through a conductor; contact point B3 is connected to contact point A3 through a conductor; and so on. Contact point B2m is connected to contact point A(2n - 2) through a conductor; When n equals 2 and m equals 1: One end of the first turn of antenna Ⅰ (2) is connected to antenna contact pin L1, and the other end is connected to contact point A1; one end of the second turn of antenna Ⅰ (2) is connected to contact point A2, and the other end is connected to antenna contact pin L2; One end of the first turn of antenna Ⅱ (3) is connected to contact point B1, and the other end is connected to contact point B2; Contact point B1 is connected to contact point A1 through a conductor.

6. A high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 5, characterized in that: Antenna Ⅰ (2) has 2 turns; antenna Ⅱ (3) has 1 turn; The 2 antenna contact pins are respectively denoted as antenna contact pin L1 and antenna contact pin L2; There are 2 type-A connection contact points, both on the side close to antenna Ⅰ (2) together with antenna contact pin L1 and antenna contact pin L2. The type-A connection contact points are denoted as contact point A1 and contact point A2; There are 2 type-B connection contact points, both on the side close to antenna Ⅱ (3). The type-B connection contact points are denoted as contact point B1 and contact point B2; One end of the first turn of antenna Ⅰ (2) is connected to antenna contact pin L1, and the other end is connected to contact point A1; One end of the second turn of antenna Ⅰ (2) is connected to contact point A2, and the other end is connected to antenna contact pin L2; One end of the first turn of antenna Ⅱ (3) is connected to contact point B1, and the other end is connected to contact point B2; Contact point B1 is connected to contact point A1 through a conductor; Contact point B2 is connected to contact point A2 through a conductor.

7. An encapsulation structure of a high-frequency RFID tag using internal antenna routing in a chip, as claimed in claim 1, 2 or 5, characterized in that The turns of antenna Ⅰ (2) are distributed in sequence from the outside to the inside and do not intersect outside the RFID chip; The turns of antenna Ⅱ (3) are distributed in sequence from the outside to the inside and do not intersect outside the RFID chip.

8. A high-frequency RFID tag packaging structure using internal antenna routing of a chip according to any one of claims 1, 2, or 5, characterized in that, The working frequency of the RFID chip is 13.56Mhz.

9. A high-frequency RFID tag packaging structure using internal antenna routing of a chip according to any one of claims 1, 2, 3, 4, 5 or 6, characterized in that, The current directions of antenna Ⅰ (2) and antenna Ⅱ (3) are opposite. When the RFID tag is flattened or slightly bent, the magnetic flux directions generated by antenna Ⅰ (2) and antenna Ⅱ (3) are also opposite.

10. A high-frequency RFID tag packaging structure with antenna traces inside the chip, characterized in that, It includes an RFID chip (1) and an i-turn antenna, where i is a natural number greater than 1; The RFID chip (1) is provided with two antenna contact pins and several connection contacts; Both ends of each turn of the antenna are respectively connected to the antenna contact pin or the connection contact; among them: one end of the first turn of the antenna is connected to the antenna contact pin, and the other end is connected to a connection contact, and one end of the i-th turn of the antenna is connected to the other antenna contact pin, and the other end is connected to a connection contact; A connection contact and an antenna contact pin are each only connected to one end of any turn of the antenna; Inside the RFID chip, each connection contact is connected to another connection contact through a conductor, so that the i turns of the antenna are connected into a continuous integral antenna; both ends of the integral antenna are respectively connected to the 2 antenna contact pins.

11. A high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 10, characterized in that, One end of the first turn of the antenna is connected to the antenna contact pin L1, and the other end is connected to the contact C1. One end of the second turn of the antenna is connected to the contact C2, and the other end is connected to the contact C3, and so on. One end of the (i - 1)-th turn of the antenna is connected to the contact C(2i - 4), and the other end is connected to the contact C(2i - 3). One end of the i-th turn of the antenna is connected to the contact C(2i - 2), and the other end is connected to the antenna contact pin L2; The contact C1 is connected to the contact C2 through a conductor, the contact C3 is connected to the contact C4 through a conductor, and so on, and the contact C(2i - 3) is connected to the contact C(2i - 2) through a conductor.

12. The high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 11, characterized in that, It includes 2 turns of the antenna; one end of the first turn of the antenna is connected to the antenna contact pin L1, and the other end is connected to the contact C1. One end of the second turn of the antenna is connected to the contact C2, and the other end is connected to the antenna contact pin L2; the contact C1 is connected to the contact C2 through a conductor.

13. A high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 11, characterized in that It includes 3 turns of the antenna; one end of the first turn of the antenna is connected to the antenna contact pin L1, and the other end is connected to the contact C1. One end of the second turn of the antenna is connected to the contact C2, and the other end is connected to the antenna contact pin C3; one end of the third turn of the antenna is connected to the contact C4, and the other end is connected to the antenna contact pin L2; The contact C1 is connected to the contact C2 through a conductor, and the contact C3 is connected to the contact C4 through a conductor.

14. A high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 11, characterized in that, Each turn of the i turns of the antenna is distributed in sequence from the outside to the inside and does not intersect outside the RFID chip.

15. A high-frequency RFID tag encapsulation structure using internal antenna routing within a chip, as claimed in claim 11, characterized in that Among the i turns of the antenna, the first k turns of the antenna are denoted as antenna I (2); the (k + 1)-th turn to the i-th turn of the antenna are denoted as antenna II (3); k is a natural number greater than or equal to 1 and less than or equal to i; Antenna I (2) and antenna II (3) are respectively located on both sides of the RFID chip.

16. A high-frequency RFID tag packaging structure using internal antenna routing in a chip, as claimed in claim 11, wherein The working frequency of the RFID chip is 13.56Mhz.

17. A high-frequency RFID tag packaging structure using internal antenna routing of a chip according to claim 15, characterized in that, The current directions of antenna I (2) and antenna II (3) are opposite. When the RFID tag is flattened or slightly bent, the magnetic flux directions generated by antenna I (2) and antenna II (3) are also opposite.

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