CN110212285B

CN110212285B - Near field communication antenna, manufacturing method thereof, display module and display system

Info

Publication number: CN110212285B
Application number: CN201910579006.1A
Authority: CN
Inventors: 马太昇; 章玲玲; 周九斌
Original assignee: Shanghai Tianma Microelectronics Co Ltd
Current assignee: Shanghai Tianma Microelectronics Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2021-11-02
Anticipated expiration: 2039-06-28
Also published as: CN110212285A

Abstract

The invention discloses a near field communication antenna and a manufacturing method thereof, a display module and a display system, wherein the near field communication antenna comprises: a substrate base plate; the loop antenna comprises a cross-line area, a loop wiring, a first electrode terminal and a second electrode terminal, wherein the loop wiring is connected with the first electrode terminal and the second electrode terminal, so that signals of the loop antenna can reach the second electrode terminal from the first electrode terminal; the ring-shaped wire comprises an M1 bottom layer structure arranged on the substrate base plate and an M2 top layer structure which is in contact with the bottom layer structure and is far away from the substrate base plate, and the wire crossing area comprises an M1 bottom layer structure arranged on the substrate base plate, an insulating layer in contact with the bottom layer structure and an M2 top layer structure which is in contact with the insulating layer and is far away from the insulating layer. The invention provides a near field communication antenna, a manufacturing method thereof, a display module and a display system, and aims to solve the problem that the performance of an NFC antenna for transmitting signals of an existing display screen is poor.

Description

Near field communication antenna, manufacturing method thereof, display module and display system

Technical Field

The invention relates to the technical field of near fields, in particular to a near field communication antenna, a manufacturing method of the near field communication antenna, a display module and a display system.

Background

Near Field Communication (NFC) is a non-contact identification and interconnection technology, which uses a Near Field magnetic Field Communication mode, has the characteristics of short transmission distance, low energy consumption, difficult signal interference and the like, and can perform Near Field wireless Communication among mobile devices, consumer electronics and intelligent control tools.

At present, the display screens of mobile terminals such as mobile phones and the like are integrated with an NFC function, but the antenna of the existing NFC product is mainly integrated on one surface of a battery or attached to the inner side of a housing, and the adopted mode is generally that a coil is made of metal wires on a Printed Circuit Board (PCB) or a Flexible Printed Circuit (FPC), and then the PCB or FPC Board containing the coil is attached to the battery or the housing.

But battery and shell often need dismouting repeatedly for the easy problem that appears wearing and tearing or counterpoint inaccurate of wiring department of NFC antenna finally causes the antenna signal variation, influences the NFC function, and in addition, when the NFC antenna is located the shell of electronic product, if select metal material to do the shell, can influence the propagation of NFC signal, has restricted the electronic product shell when the selection material, selects firm metal material.

Disclosure of Invention

The embodiment of the invention provides a near field communication antenna, a manufacturing method thereof, a display module and a display system, and aims to solve the problem that the performance of an NFC antenna for transmitting signals of an existing display screen is poor.

In a first aspect, an embodiment of the present invention provides a near field communication antenna, including: a substrate base plate;

the substrate is provided with a loop antenna, the loop antenna comprises a cross-line area and a loop routing, the loop antenna further comprises a first electrode terminal and a second electrode terminal, the loop routing is connected with the first electrode terminal and the second electrode terminal, and signals of the loop antenna can reach the second electrode terminal from the first electrode terminal; the looped routing comprises an M1 bottom layer structure arranged on a substrate base plate and an M2 top layer structure which is in contact with the bottom layer structure and is far away from the substrate base plate, and the crossover region comprises an M1 bottom layer structure arranged on the substrate base plate, an insulating layer in contact with the bottom layer structure and an M2 top layer structure which is in contact with the insulating layer and is far away from the insulating layer; m1 and M2 are each integers greater than or equal to 1.

In a second aspect, an embodiment of the present invention further provides a method for manufacturing a near field communication antenna, including:

providing a substrate base plate;

arranging a loop antenna on the substrate base plate; the loop antenna comprises a cross-line area and a loop routing, and further comprises a first electrode terminal and a second electrode terminal, wherein the loop routing is connected with the first electrode terminal and the second electrode terminal, so that signals of the loop antenna can reach the second electrode terminal from the first electrode terminal;

set up loop antenna on the substrate base plate, specifically include:

forming an M1 layer bottom structure of the ring-shaped routing and the cross-wiring area on the substrate base plate; m1 is an integer greater than or equal to 1;

laying an insulating layer on the bottom layer structure of the cross-line area;

laying an M2 layer top layer structure of the ring-shaped wire on the bottom layer structure of the ring-shaped wire, and laying an M2 layer top layer structure of the wire crossing area on the insulating layer of the wire crossing area; m2 is an integer greater than or equal to 1.

In a third aspect, an embodiment of the present invention further provides a display module, including the near field communication antenna provided in any embodiment of the present invention, further including: a display panel; the near field communication antenna is attached to the display panel.

In a fourth aspect, an embodiment of the present invention further provides a display system, including the display module provided in any embodiment of the present invention; the display module is integrated in the monitor of the display system.

According to the invention, the loop antenna is arranged on the substrate to form the near-field communication antenna, and the loop antenna comprises the cross-line area, the annular routing, the first electrode terminal and the second electrode terminal, so that signals of the loop antenna can reach the second electrode terminal from the first electrode terminal. The annular routing comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged in contact with the bottom layer structure, the line crossing region also comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged far away from the substrate base plate, but the top layer structure and the top layer structure are separated by an insulating layer, and the insulating layer is respectively in contact with the top layer structure and the bottom layer structure in the line crossing region. The annular wiring comprises a multilayer bottom layer structure and a top layer structure contacted with the bottom layer structure, the thickness of the annular wiring comprising the multilayer structure is higher, the impedance value of the annular wiring can be effectively reduced, the transmission rate of signals is improved, the quality factor of the near field communication antenna is increased, and the performance of transmitting signals is better. In addition, the nfc antenna of the embodiment may be disposed on a display screen of the display device, instead of a battery or a housing of the display device, so as to further enhance the signal transmission performance of the nfc antenna.

Drawings

Fig. 1 is a schematic plan view of a near field communication antenna according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the near field communication antenna of FIG. 1 at line h-h';

fig. 3 is a cross-sectional view of another nfc antenna provided in an embodiment of the present invention;

FIG. 4 is an enlarged fragmentary view of the mid-span region of FIG. 1;

fig. 5 is a schematic plan view of another nfc antenna according to an embodiment of the present invention;

fig. 6 is a schematic plan view of another nfc antenna according to an embodiment of the present invention;

fig. 7 is a schematic plan view of another nfc antenna according to an embodiment of the present invention;

fig. 8 is a schematic diagram of the bottom structure of the nfc antenna of fig. 6;

fig. 9 is a schematic structural diagram of an insulating layer of the near field communication antenna in fig. 6;

fig. 10 is a schematic diagram of a top layer structure of the near field communication antenna of fig. 6;

fig. 11 is a schematic diagram of the bottom structure of the nfc antenna of fig. 7;

fig. 12 is a schematic structural view of an insulating layer of the near field communication antenna of fig. 7;

fig. 13 is a schematic diagram of a top layer structure of the near field communication antenna of fig. 7;

fig. 14 is a schematic plan view of another nfc antenna according to an embodiment of the present invention;

fig. 15 is a schematic diagram of the bottom structure of the near field communication antenna of fig. 14;

fig. 16 is a schematic structural view of an insulating layer of the near field communication antenna of fig. 14;

fig. 17 is a schematic diagram of a top layer structure of the near field communication antenna of fig. 14;

fig. 18 is a schematic diagram of the bottom structure of the near field communication antenna of fig. 1;

fig. 19 is a schematic structural view of an insulating layer of the near field communication antenna of fig. 1;

fig. 20 is a schematic diagram of a top layer structure of the near field communication antenna of fig. 1;

fig. 21 is a schematic flowchart illustrating a method for manufacturing a near field communication antenna according to an embodiment of the present invention;

fig. 22 is a schematic structural diagram of a display module according to an embodiment of the present invention;

FIG. 23 is a schematic structural diagram of another display module according to an embodiment of the present invention;

FIG. 24 is a schematic structural diagram of another display module according to an embodiment of the present invention;

FIG. 25 is a schematic structural diagram of another display module according to an embodiment of the present invention;

fig. 26 is a schematic structural diagram of a display system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Near Field Communication technology (NFC) has transmission distance Near, the energy consumption is low, the difficult characteristics such as interference of signal, be fit for being applied to intelligent payment and intelligent wearing equipment on, for on laminating Near Field Communication antenna display device's shell or battery, the Near Field Communication antenna that this embodiment provided can be integrated on display panel, with improve product integration, realize the product frivolousization, and make Near Field Communication antenna be close to display device's surface more, the Communication effect is better.

Specifically, an embodiment of the present invention provides a near field communication antenna, including:

the loop antenna comprises a cross-line area, a loop wiring, a first electrode terminal and a second electrode terminal, wherein the loop wiring is connected with the first electrode terminal and the second electrode terminal, so that signals of the loop antenna can reach the second electrode terminal from the first electrode terminal; the ring-shaped wire comprises an M1 bottom layer structure arranged on the substrate base plate and an M2 top layer structure which is in contact with the bottom layer structure and is far away from the substrate base plate, and the wire crossing region comprises an M1 bottom layer structure arranged on the substrate base plate, an insulating layer in contact with the bottom layer structure and an M2 top layer structure which is in contact with the insulating layer and is far away from the insulating layer; m1 and M2 are each integers greater than or equal to 1.

In the embodiment of the invention, the loop antenna is arranged on the substrate to form the near field communication antenna, and the loop antenna comprises the cross-line area, the annular routing, the first electrode terminal and the second electrode terminal, so that signals of the loop antenna can reach the second electrode terminal from the first electrode terminal. The annular routing comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged in contact with the bottom layer structure, the line crossing region also comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged far away from the substrate base plate, but the top layer structure and the top layer structure are separated by an insulating layer, and the insulating layer is respectively in contact with the top layer structure and the bottom layer structure in the line crossing region. The annular wiring comprises a multilayer bottom layer structure and a top layer structure contacted with the bottom layer structure, the thickness of the annular wiring comprising the multilayer structure is higher, the impedance value of the annular wiring can be effectively reduced, the transmission rate of signals is improved, the quality factor of the near field communication antenna is increased, and the performance of transmitting signals is better. In addition, the nfc antenna of the embodiment may be disposed on a display screen of the display device, instead of a battery or a housing of the display device, so as to further enhance the signal transmission performance of the nfc antenna.

The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.

Fig. 1 is a schematic plan structure diagram of a near field communication antenna according to an embodiment of the present invention, fig. 2 is a cross-sectional view of the near field communication antenna in fig. 1 at a straight line h-h', referring to fig. 1, a loop antenna 12 is disposed on a substrate 11, the loop antenna 12 includes a first electrode terminal a and a second electrode terminal B, and further includes a crossover region 121 and a loop trace 122, the loop trace 122 is respectively connected to the first electrode terminal a and the second electrode terminal B, so that a signal of the loop antenna 12 can be transmitted from the first electrode terminal a to the second electrode terminal B, optionally, the first electrode terminal a is a positive electrode for receiving a signal, and the second electrode terminal is a negative electrode for outputting a signal. Referring to fig. 2, the loop trace 122 includes a bottom structure 122a disposed on the substrate base plate 11 and a top structure 122b disposed in contact with the bottom structure 122a and away from the substrate base plate 11. And the number of layers of the bottom layer structure 122a is M1, the number of layers of the top layer structure 122b is M2, M1 and M2 are both integers greater than or equal to 1, fig. 2 shows a structure of the loop trace 122 where M1 is equal to 1 and M2 is equal to 1, and M1 and M2 may also be integers greater than 1, for example, integers of 2 and greater than 2, referring to fig. 3, fig. 3 is a cross-sectional view of another near field communication antenna provided in an embodiment of the present invention, fig. 3 shows a structure of the loop trace 122 where M1 is equal to 2 and M2 is equal to 2. In this embodiment, the loop trace 122 includes not only the top layer structure 122b and the bottom layer structure 122a, but also multiple layers of the top layer structure 122b and multiple layers of the bottom layer structure 122a, so that the finally formed loop trace 122 has a higher thickness, so that the loop trace has a lower impedance value, the signal transmission rate of the loop antenna is improved, and the signal transmission performance of the near field communication antenna is enhanced.

And for the crossover region 121, as shown in fig. 4, fig. 4 is a partial enlarged view of the crossover region in fig. 1. The crossover region 121 includes an M1-layer lower structure 122a disposed on the substrate base plate 11, an insulating layer 124 in contact with the lower structure 122a, and an M2-layer upper structure 122b in contact with the insulating layer 124 and away from the insulating layer 124. The crossover section 121 may also include a multi-layer bottom layer structure 122a and a multi-layer top layer structure 122b, so that the crossover disposed in the crossover section 121 has a lower impedance value, and the signal transmission capability of the crossover section 121 is improved. And an insulating layer 124 is arranged between the bottom layer structure 122a and the top layer structure 122b, the thickness of the crossover region 121 is the sum of the bottom layer structure 122a, the insulating layer 124 and the top layer structure 122b, the crossover of the bottom layer structure 122a does not cross to the side of the top layer structure 122b far away from the substrate 11, to form a crossover comprising two M1 layers of the bottom layer structure 122a and two M2 layers of the top layer structure 122b, but only one of the bottom layer structure 122a and the top layer structure 122b is selected for crossover arrangement, so that a signal is transmitted from the first electrode terminal to the second electrode terminal, the thickness difference value between the crossover region 121 and the annular trace 122 is reduced, and the thickness of the insulating layer 124 is smaller relative to the bottom layer structure 122a and the top layer structure 122b, in this embodiment, the thickness of the crossover region 121 and the annular structure 122 only has the trace thickness of one insulating layer 124, so that the overall surface flatness of the annular antenna 12 is higher, brings great convenience to the structural design and reduces the subsequent process difficulty and risk.

Alternatively, the insulating layer may be an insulating ink. The thickness of the insulating ink is relatively low, so that the insulation between the bottom layer structure 122a and the top layer structure 122b is realized, the thickness difference between the cross-line area 121 and the annular routing line 122 is reduced, and the flatness of the manufacture of the loop antenna 12 is enhanced.

Alternatively, with continued reference to fig. 2 and 3, the side of the loop antenna 12 remote from the base substrate 11 is covered with a protective layer 123. Optionally, the protective layer 123 may be protective ink, and is used to protect the loop antenna 12 from external damage, oxidation, and the like, and further improve the surface flatness of the loop antenna 12, and reduce the process risk caused by the unevenness of the loop antenna 12.

Alternatively, the bottom layer structure 122a and the top layer structure 122b may be formed by a screen printing process; the material of the bottom layer structure 122a and the top layer structure 12b is conductive silver paste. In the screen printing process of the near field communication antenna, the process is limited by the existing screen printing process, the maximum printing thickness is 20-30um and the resistance is too large under normal conditions, and in the embodiment, the top layer antenna 122b and the bottom layer antenna 122a are printed and superposed for multiple times, so that the thickness limitation caused by the printing process is broken through, the impedance is further reduced, and the transmitting capacity is improved. Optionally, the bottom layer structure 122a, the top layer structure 122b, the insulating layer 124, and the protective layer 123 may be produced by a screen printing process. Optionally, the bottom layer structure 122a includes M1 layers, when the bottom layer structure is a multilayer structure, each layer of the bottom layer structure 122a is printed and manufactured for multiple times, and the top layer antenna 122b includes M2 layers, and when the top layer structure is a multilayer structure, each layer of the top layer antenna 122b is printed and manufactured for multiple times, so as to further increase the thickness of the loop trace 122 and the crossover of the crossover region 121, and reduce the impedance value. It is noted that the layers in the M1 bottom layer 122a of the loop antenna 122 are printed in the same layer as the layers in the M1 bottom layer 122a of the crossover region 121. Illustratively, the p1 th bottom layer structure 122a of the loop antenna 122 is disposed on the same layer as the p1 th bottom layer structure 122a of the crossover region 121, and p1 is an integer greater than or equal to 1 and less than or equal to M1. Similarly, the layers in the M2-layer top antenna 122b of the loop antenna 122 are printed in the same layer as the layers in the M2-layer top antenna 122b of the crossover region 121. Illustratively, the p2 th layer top antenna 122b of the loop antenna 122 is disposed on the same layer as the p2 th layer top antenna 122b of the crossover region 121, and p2 is an integer greater than or equal to 1 and less than or equal to M2. Thereby speeding up the overall process flow of the loop antenna 12.

Optionally, the thickness of the loop trace 122 may be 40 to 50 μm. Within this thickness range, the loop trace 122 can have a smaller impedance value, and the signal transmission capability is improved. And the thickness of the loop trace 122 may include a top layer antenna 122b and a bottom layer structure 122a, so that the loop antenna 12 is more light and thin.

Optionally, with continued reference to fig. 2 and 3, in a plane parallel to the substrate base plate 11, a width d1 of the bottom layer structure 122a in a direction perpendicular to the extending direction of the looped trace 122 is greater than a width d2 of the top layer structure 122b in the direction perpendicular to the extending direction of the looped trace 122. The width d1 printed by the bottom layer structure 122a needs to be larger than the width d2 printed by the top layer structure 122b to prevent the collapse of the top layer structure 122b and the insulating layer 124, thereby enhancing the structural strength of the whole loop trace 122.

Fig. 5 is a schematic plan view of another near field communication antenna according to an embodiment of the present invention, where the substrate base plate 11 optionally includes a first substrate base plate 111 and a second substrate base plate 112; the first substrate 111 includes a display region 111a and a non-display region 111b surrounding the display region 111 a; the ring-shaped trace 122 is disposed in the non-display area 111b of the first substrate 111, the ring-shaped trace 122 includes N turns of ring-shaped structures 1221 sequentially disposed from the center to the edge, and the ring-shaped structures 1221 are disposed around the display area 111 a; wherein N is an integer greater than or equal to 2; the crossover region 121, the first electrode terminal a, and the second electrode terminal B are disposed on the second substrate 112.

The substrate 11 in this embodiment may be an independent substrate, which is attached to the display panel after the loop antenna is printed, or may be a substrate of the display panel itself or a film layer on the display panel. The first substrate 111 includes a display region 111a and a non-display region 111b surrounding the display region 111a, and the first substrate 111 may be a part of the display panel or may be a substrate separately disposed corresponding to the display panel. The ring-shaped wire 122 is disposed on the first substrate 111, and includes a plurality of ring-shaped structures 1221 sequentially disposed from the center to the edge, and the ring-shaped structures 1221 are disposed around the display area 111a, and can be disposed close to the display panel without affecting normal display of the display panel. The number of turns of the ring-shaped structure 1221 may be 2, as shown in fig. 5, or more than 2, which is not limited in this embodiment.

The second substrate 112 may be a substrate completely separated from the first substrate 111, or a substrate bonded to the first substrate 111, and optionally, the second substrate may be a flexible printed circuit board, and the crossover region 121, the first electrode terminal a, and the second electrode terminal B are disposed on the second substrate 112. The adoption striding line region 121 and cyclic annular are walked line 122 and are divided the base plate setting, can carry out nimble control to the striding line mode of cyclic annular line 122, and is exemplary, when preparing near field communication antenna, the cyclic annular of different first substrate base plate 111 is walked line 122 and can be connected the striding line region 121 of different second substrate base plate 112 respectively, realizes near field communication antenna's pluralism and commonality, improves near field communication antenna's signal stability and reliability simultaneously.

Alternatively, with continued reference to fig. 1, the substrate base includes a third substrate base 113, the third substrate base 113 including a display area 113a and a non-display area 113b surrounding the display area 113 a; the loop antenna 12 is disposed in the non-display region 113 b; in a plane parallel to the third substrate 113, the ring-shaped routing 122 includes N turns of ring-shaped structures 1221 sequentially arranged from the center to the edge, and the ring-shaped structures 1221 are all arranged around the display area 113 a; wherein N is an integer greater than or equal to 2; two adjacent turns of the ring-shaped structures 1221 are connected by a crossover disposed at the crossover region 121.

Fig. 1 shows that the substrate base plate comprises only one base plate: the third base substrate 113. The loop-shaped wiring 122, the over-line area 121, the first electrode terminal a and the second electrode terminal B of the loop antenna 12 are all disposed in the non-display area 113B of the third substrate 113, the loop-shaped wiring 122 includes N turns of loop-shaped structures 1221 sequentially disposed from the center to the edge, the value of N is an integer greater than or equal to 2, only the case where N is equal to 2 is illustrated in fig. 1, the loop-shaped structures 1221 are all disposed around the display area 113a, and can be disposed close to the display panel without affecting normal display of the display panel. The third substrate 113 in this embodiment may be an independent substrate, which is attached to the display panel after the loop antenna is printed, or may be a substrate of the display panel itself or a film layer on the display panel. Two adjacent turns of the ring-shaped structures 1221 are connected by the crossover wire disposed in the crossover area 121, so that the ring-shaped wire 122 forms a continuous wire, and a signal in the ring-shaped wire 122 is transmitted from the first electrode terminal a to the second electrode terminal B.

Referring to fig. 6, fig. 6 is a schematic plan view illustrating a near field communication antenna according to another embodiment of the present invention, where the substrate includes only the third substrate 113, optionally, the crossover region 121 includes a first crossover region 121 a; each ring-shaped structure 1221 includes, in a plane parallel to the third substrate base plate 113, a first end f1 and a second end f 2; the second end f2 of the i-th turn annular structure 1221 is connected to the first end f1 of the i + 1-th turn annular structure 1221 through the first crossover line L1 of the first crossover section 121 a; i is an integer which is greater than or equal to 1 and less than N; the second end f2 of the nth turn annular structure 1221 is electrically connected to the first electrode terminal a; the first end f1 of the 1 st turn ring structure 1221 is electrically connected to the second electrode terminal B through the second flying line L2 of the first flying line region 121 a.

Fig. 6 shows a structure of an asymmetric near field communication antenna, each loop structure 1221 includes a first end f1 and a second end f2, and from center to edge, the second end f2 of the first turn loop structure 1221 is connected to the first end f1 of the second turn loop structure 1221 through a first crossover line L1 of the first crossover section 121a, and so on until the second end f2 of the N-1 turn loop structure 1221 is connected to the first end f1 of the N-1 turn loop structure 1221 through a first crossover line L1 of the first crossover section 121a, the second end f2 of the N-1 turn loop structure 1221 is connected to the first electrode terminal a, the first end f1 of the first turn loop structure 1221 is connected to the second electrode terminal B through a second crossover line L2, and the loop antenna 12 achieves the transmission of a signal from the first electrode terminal a to the second electrode terminal through a loop. Fig. 6 shows a structure of a near field communication antenna when N is 2, where N may also be any positive integer greater than 2, referring to fig. 7, fig. 7 is a schematic plan structure diagram of another near field communication antenna provided in an embodiment of the present invention, and fig. 7 shows a structure of a near field communication antenna when N is 4. As shown in fig. 7, the first crossover section 121a includes four first crossovers L1, and one second crossovers L2. For the nfc antenna shown in fig. 7 including the N-turn loop structure 1221, the first crossover region 121a includes N first crossovers L1 and one second crossovers L2.

Referring to fig. 8 to 10, fig. 8 is a schematic diagram of a bottom structure of the near field communication antenna in fig. 6, fig. 9 is a schematic diagram of a structure of an insulating layer of the near field communication antenna in fig. 6, fig. 10 is a schematic diagram of a top structure of the near field communication antenna in fig. 6, alternatively, the first flying lead L1 may be disposed on the bottom structure 122a of the first flying lead region 121a, and the second flying lead L2 is disposed on the top structure 122b of the first flying lead region 121 a; alternatively, the first crossover line L1 is disposed on the top layer structure 122b of the first crossover section 121a, and the second crossover line L2 is disposed on the bottom layer structure 122a of the first crossover section 121 a.

Referring to fig. 8, the bottom structure 122a of the nfc antenna is provided with all the bottom structures 122a of the loop traces, the first crossover area 121a is provided with only the first crossover line L1, and the second crossover line L2 is not provided, referring to fig. 9, only the first crossover area 121a is provided with the insulating layer 124, referring to fig. 10, the top structure 122b of the loop trace, which is provided in the top structure 122b of the nfc antenna, the first crossover area 121a is provided with only the second crossover line L2, and the first crossover line L1 is not provided. As can be seen from fig. 8 to 10, the first crossover line L1 and the second crossover line L2 are not disposed in the top layer structure 122b or the bottom layer structure 122a at the same time, but are disposed in different structural layers, so as to effectively prevent the first crossover line L1 and the second crossover line L2 from forming a protruding structure in the first crossover region 121a due to the mutual crossing therebetween, and ensure that the loop structures can be connected to each other through the first crossover line L1 and the second crossover line L2, while maintaining the thickness of the first crossover line region 121a to be substantially the same as the thickness of the loop trace, thereby reducing the process risk of the loop antenna due to unevenness. Similarly, referring to fig. 11 to 13, fig. 11 is a schematic diagram of a bottom structure of the near field communication antenna in fig. 7, fig. 12 is a schematic diagram of a structure of an insulating layer of the near field communication antenna in fig. 7, fig. 13 is a schematic diagram of a top structure of the near field communication antenna in fig. 7, a first crossover line L1 may be disposed on the bottom structure 122a, a second crossover line L2 may be disposed on the top structure 122b, and of course, a first crossover line L1 may be disposed on the top structure 122b, and a second crossover line L2 may be disposed on the bottom structure 122a, and for the case that the number of turns N of the loop structure shown in fig. 7 is greater than 2, it is preferable to dispose the first crossover line L1 on the bottom structure 122a and the second crossover line L2 on the top structure 122b, because the number of first crossover lines L1 is greater than that of the second crossover lines L2, so that the problem of the top structure 122b and the insulating layer 124 collapse of the top structure 122b when the first crossover region 121a is disposed on the first crossover line 1 is prevented, the strength of the near field communication antenna is enhanced.

Optionally, referring to fig. 14, fig. 14 is a schematic plan view illustrating a near field communication antenna according to another embodiment of the present invention, where the substrate includes only the third substrate 113, the crossover region includes a second crossover region 121b and a third crossover region 121 c; n is an even number greater than 2; in a plane parallel to the third substrate base plate 113, the 1 st turn ring structure 1221 includes a third end f3 and a fourth end f4, the j-th turn ring structures 1221 each include a third end f3, a fourth end f4, a fifth end f5 and a sixth end f6, the third end f3 and the fifth end f5 of the j-th turn ring structure 1221 are connected, and the fourth end f4 and the sixth end f6 are connected; j is an integer greater than 1 and less than or equal to N; the fourth end f4 of the k-th turn ring structure 1221 is connected to the third end f3 of the k + 1-th turn ring structure 1221 through the third crossover line L3 of the second crossover region 121b, and the third end f3 of the k-th turn ring structure 1221 is connected to the fourth end f4 of the k + 1-th turn ring structure 1221 through the fourth crossover line L4 of the second crossover region 121 b; the fifth end f5 of the k + 1-th turn annular structure 1221 is connected to the sixth end f6 of the k + 2-th turn annular structure 1221 through the fifth crossover line L5 of the third crossover region 121c, and the sixth end f6 of the k + 1-th turn annular structure 1221 is connected to the fifth end f5 of the k + 2-th turn annular structure 1221 through the sixth crossover line L6 of the third crossover region; k is an odd number of 1 or more and less than N-2; the fifth end f5 of the nth turn annular structure 1221 is electrically connected to the first electrode terminal a, and the sixth end f6 is electrically connected to the second electrode terminal B.

For the nfc antenna shown in fig. 14, only the 1 st turn ring structure 1221 includes only the third end f3 and the fourth end f4, and the remaining turn ring structures 1221 include the third end f3, the fourth end f4, the fifth end f5 and the sixth end f6, and the third end f3 is communicated with the fifth end f5, and the fourth end f4 is communicated with the sixth end f6, that is, the remaining turn ring structures 1221 except the 1 st turn are each formed by two half rings that are not connected to each other. The number of turns N of the loop structure is an even number greater than 2, where the crossover region includes a second crossover region 121b and a third crossover region 121c, fig. 14 shows a structural schematic diagram of the loop antenna when N is 4, as shown in fig. 14, a fourth end f4 of the 1 st-turn loop structure 1221 is connected to a third end f3 of the 2 nd-turn loop structure 1221 through a third crossover line L3 of the second crossover region 121b, and a third end f3 of the 1 st-turn loop structure 1221 is connected to a fourth end f4 of the 2 nd-turn loop structure 1221 through a fourth crossover line L4 of the second crossover region 121 b; the fifth end f5 of the 2 nd turn annular structure 1221 is connected to the sixth end f6 of the 3 rd turn annular structure 1221 through the fifth crossover line L5 of the third crossover section 121c, and the sixth end f6 of the 2 nd turn annular structure 1221 is connected to the fifth end f5 of the 3 rd turn annular structure 1221 through the sixth crossover line L6 of the third crossover section; the fourth end f4 of the 3 rd turn ring structure 1221 is connected to the third end f3 of the 4 th turn ring structure 1221 through the third crossover line L3 of the second crossover region 121b, and the third end f3 of the 3 rd turn ring structure 1221 is connected to the fourth end f4 of the 4 th turn ring structure 1221 through the fourth crossover line L4 of the second crossover region 121 b; the fifth end f5 of the 4 th turn ring structure 1221 is electrically connected to the first electrode terminal a, and the sixth end f6 is electrically connected to the second electrode terminal B, so that the loop antenna transmits a signal from the first electrode terminal a to the second electrode terminal B through a loop wire.

Alternatively, referring to fig. 15 to 17, fig. 15 is a schematic diagram of a bottom structure of the near field communication antenna in fig. 14, fig. 16 is a schematic diagram of a structure of an insulating layer of the near field communication antenna in fig. 14, fig. 17 is a schematic diagram of a top structure of the near field communication antenna in fig. 14, a third crossover line L3 is disposed on the bottom structure 122a of the second crossover section 121b, and a fourth crossover line L4 is disposed on the top structure 122b of the second crossover section 121 b; alternatively, the third crossover line L3 is disposed on the top layer structure 122b of the second crossover region 121b, and the fourth crossover line L4 is disposed on the bottom layer structure 122a of the second crossover region 121 b; the fifth crossover line L5 is disposed on the bottom layer structure 122a of the third crossover section 121c, and the sixth crossover line L6 is disposed on the top layer structure 122b of the third crossover section 121 c; alternatively, the fifth crossover line L5 is disposed on the top layer 122b of the third crossover section 121c, and the sixth crossover line L6 is disposed on the bottom layer 122a of the third crossover section 121 c.

Referring to fig. 15, the bottom structure 122a of the near field communication antenna is provided with all bottom structures 122a of the loop traces, the second crossover area 121b is provided with only the third crossover line L3, the fourth crossover line L4 is not provided, the third crossover area 121c is provided with only the fifth crossover line L5, the sixth crossover line L6 is not provided, referring to fig. 16, only the second crossover area 121b and the third crossover area 121c are provided with the insulating layer 124, referring to fig. 17, the top structure 122b of the loop trace provided by the top structure 122b of the near field communication antenna, the second crossover area 121b is provided with only the fourth crossover line L4, the third crossover line L3 is not provided, the third crossover area 121c is provided with only the sixth crossover line L6, and the fifth crossover line L5 is not provided. As can be seen from fig. 15 to 17, the third flying lead L3 and the fifth flying lead L5 are disposed in the same layer, and the fourth flying lead L4 and the sixth flying lead L6 are disposed in the same layer, in this embodiment, the third flying lead L3 and the sixth flying lead L6 may be disposed in the same layer, and the fourth flying lead L4 and the fifth flying lead L5 are disposed in the same layer, which is not limited in this embodiment. The third flying lead L3 and the fourth flying lead L4 are respectively disposed in different structural layers, the fifth flying lead L5 and the sixth flying lead L6 are respectively disposed in different structural layers, so as to effectively prevent the third flying lead L3 and the fourth flying lead L4 from forming a protruding structure in the second flying lead area 121b due to the crossing of the two, and prevent the fifth flying lead L5 and the sixth flying lead L6 from forming a protruding structure in the third flying lead area 121c due to the crossing of the two.

Optionally, with continued reference to fig. 1, N — 2; the crossover region 121 may include a second crossover region; the 1 st turn annular structure 1221 includes a third end f3 and a fourth end f4, and the 2 nd turn annular structure 1221 includes a third end f3, a fourth end f4, a fifth end f5, and a sixth end f 5; the third end f3 and the fifth end f5 of the 2 nd turn annular structure 1221 are connected, and the fourth end f4 and the sixth end f6 are connected; the fourth end f4 of the 1 st turn annular structure 1221 is connected to the third end f3 of the 2 nd turn annular structure 1221 through the third crossover line L3 of the second crossover region 121b, and the third end f3 of the 1 st turn annular structure 1221 is connected to the fourth end f4 of the 2 nd turn annular structure 1221 through the fourth crossover line L4 of the second crossover region 121 b; the fifth end f5 of the 2 nd turn annular structure 1221 is electrically connected to the first electrode terminal a, and the sixth end f6 is electrically connected to the second electrode terminal B. In this embodiment, when N is 2, the crossover region only includes the second crossover region 121b, and does not include the third crossover region.

Alternatively, referring to fig. 18 to 20, fig. 18 is a schematic diagram of a bottom structure of the near field communication antenna in fig. 1, fig. 19 is a schematic diagram of a structure of an insulating layer of the near field communication antenna in fig. 1, fig. 20 is a schematic diagram of a top structure of the near field communication antenna in fig. 1, a third crossover line L3 is disposed on the bottom structure 122a of the second crossover section 121b, and a fourth crossover line L4 is disposed on the top structure 122b of the second crossover section 121 b; alternatively, the third crossover line L3 is disposed on the top layer structure 122b of the second crossover region 121b, and the fourth crossover line L4 is disposed on the bottom layer structure of the second crossover region 121 b. The third crossover line L3 and the fourth crossover line L4 are not disposed in the top layer structure 122b or the bottom layer structure 122a at the same time, but are disposed in different structural layers, so that the third crossover line L3 and the fourth crossover line L4 are effectively prevented from forming a protruding structure in the second crossover region 121b due to mutual crossing therebetween, and the thickness of the second crossover region 121b is kept substantially the same as that of the loop trace while the loop structures are connected through the third crossover line L3 and the fourth crossover line L4, thereby reducing the process risk of the loop antenna due to unevenness.

Alternatively, with continued reference to fig. 1 and 14, the loop antenna 12 is a symmetrical structure about the first centerline O-O'; the first electrode terminal a and the second electrode terminal B are symmetrically disposed about the first center line O-O'; the second span region 121b is symmetrical about the first centerline O-O'. The loop antenna 12 with a symmetrical arrangement has a strong electromagnetic interference resistance, and referring to fig. 14, for the near field communication antenna in fig. 14, which includes the second span area 121b and the third span area 121c, the second span area 121b and the third span area 121c can be arranged symmetrically with respect to the first center line O-O'.

Optionally, with continued reference to fig. 1 and 14, the loop antenna 12 further includes a null terminal C; the null terminal C is positioned between the first electrode terminal A and the second electrode terminal B; the null terminal C is connected to the 1 st turn annular structure 1221 and is located on the first centerline O-O'. The null terminal C is disposed on the first center line O-O' and connected to the 1 st turn of the ring structure 1221, and the null terminal C is disposed at a midpoint of the whole line of the loop antenna 12, and the midpoint can be just used as a null of the whole line, so as to further enhance symmetry of the near field communication antenna.

Based on the same conception, the embodiment of the invention also provides a manufacturing method of the near field communication antenna. Fig. 21 is a schematic flowchart of a method for manufacturing a near field communication antenna according to an embodiment of the present invention, and as shown in fig. 21, the method according to the embodiment includes the following steps:

step S110, providing a substrate.

Step S120, arranging a loop antenna on a substrate; the loop antenna comprises a cross line area and a loop-shaped wiring, and further comprises a first electrode terminal and a second electrode terminal, wherein the loop-shaped wiring is connected with the first electrode terminal and the second electrode terminal, so that signals of the loop antenna can reach the second electrode terminal from the first electrode terminal.

Wherein, set up loop antenna on the substrate base plate, specifically include: forming an M1 layer bottom structure of a ring-shaped routing and cross-wiring area on the substrate base plate; m1 is an integer greater than or equal to 1; laying an insulating layer on the bottom layer structure of the cross-line area; laying an M2 layer top layer structure of the annular routing on the bottom layer structure of the annular routing, and laying an M2 layer top layer structure of the cross-line area on the insulating layer of the cross-line area; m2 is an integer greater than or equal to 1.

According to the manufacturing method of the near field communication antenna provided by the embodiment of the invention, the loop antenna is arranged on the substrate to form the near field communication antenna, the loop antenna comprises the cross-line area, the annular routing, the first electrode terminal and the second electrode terminal, and signals of the loop antenna can reach the second electrode terminal from the first electrode terminal. The annular routing comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged in contact with the bottom layer structure, the line crossing region also comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged far away from the substrate base plate, but the top layer structure and the top layer structure are separated by an insulating layer, and the insulating layer is respectively in contact with the top layer structure and the bottom layer structure in the line crossing region. The annular wiring comprises a multilayer bottom layer structure and a top layer structure contacted with the bottom layer structure, the thickness of the annular wiring comprising the multilayer structure is higher, the impedance value of the annular wiring can be effectively reduced, the transmission rate of signals is improved, the quality factor of the near field communication antenna is increased, and the performance of transmitting signals is better. In addition, the nfc antenna of the embodiment may be disposed on a display screen of the display device, instead of a battery or a housing of the display device, so as to further enhance the signal transmission performance of the nfc antenna.

The embodiment of the invention also provides a display module. Fig. 22 is a schematic structural diagram of a display module according to an embodiment of the present invention, and as shown in fig. 22, a display module 3 according to an embodiment of the present invention includes a near field communication antenna 1 according to any embodiment of the present invention; the display module 3 further includes: a display panel 2; the near field communication antenna 1 is attached to the display panel.

According to the display module provided by the embodiment of the invention, the loop antenna is arranged on the substrate to form the near field communication antenna, the loop antenna comprises the cross-line area, the annular routing, the first electrode terminal and the second electrode terminal, and the signal of the loop antenna can reach the second electrode terminal from the first electrode terminal. The annular routing comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged in contact with the bottom layer structure, the line crossing region also comprises an M1 bottom layer structure arranged close to the substrate base plate and an M2 top layer structure arranged far away from the substrate base plate, but the top layer structure and the top layer structure are separated by an insulating layer, and the insulating layer is respectively in contact with the top layer structure and the bottom layer structure in the line crossing region. The annular wiring comprises a multilayer bottom layer structure and a top layer structure contacted with the bottom layer structure, the thickness of the annular wiring comprising the multilayer structure is higher, the impedance value of the annular wiring can be effectively reduced, the transmission rate of signals is improved, the quality factor of the near field communication antenna is increased, and the performance of transmitting signals is better. In addition, the nfc antenna of the embodiment may be disposed on a display screen of the display device, instead of a battery or a housing of the display device, so as to further enhance the signal transmission performance of the nfc antenna.

Optionally, the substrate reuse of the display panel 2 may be the substrate of the near field communication antenna 1, and no additional substrate needs to be provided, so that the manufacturing cost of the near field communication antenna 1 is saved, the display module formed by the display panel 2 and the near field communication antenna 1 is lighter and thinner, and the signal emission performance of the near field communication antenna 1 is improved.

Fig. 23 is a schematic structural diagram of another display module according to an embodiment of the present invention, and optionally, the display module 3 further includes: a glass cover plate 4; the glass cover plate 4 is arranged on the display side of the display panel 1; the glass cover plate 4 is reused as a substrate base plate of the near field communication antenna 1; the loop antenna of the near field communication antenna 1 is disposed on one side of the glass cover plate 4 close to the display panel 1. Can make near field communication antenna 1's loop antenna on glass apron 4 to glass apron 4 and loop antenna form near field communication antenna 1, later with glass apron 4 one side and the laminating of display panel 1 that is provided with loop antenna, make display module assembly 3 more frivolous, improve the product integration level, near field communication antenna 1 is close to the demonstration side, carries out the transmission of signal easily.

Optionally, referring to fig. 24, fig. 24 is a schematic structural diagram of another display module according to an embodiment of the present invention, and the display module 3 may further include: a drive circuit 31 and an electrostatic protection circuit 32; the driving circuit 31 is used for driving the near field communication antenna 1; the electrostatic protection circuit 32 is electrically connected to the drive circuit 31 and the near field communication antenna 1, respectively.

In the production and use process of the liquid crystal display panel, the upper polarizer on the surface of the upper substrate is easy to accumulate electrostatic charges, and the static electricity is generally led out by conducting and grounding the upper substrate and the lower substrate with silver paste, but the problems that the product is damaged by electrostatic shock or abnormal display is caused when the static electricity is not released in time generally exist. The present embodiment is provided with the electrostatic protection circuit 32, and the near field communication antenna 1, for leading out the static electricity on the substrate surface through the loop antenna, the static electricity may be the static electricity generated from the outside and entering the display panel, and because the loop antenna is a ring structure surrounding the display area, the static electricity can be more thoroughly led out. The driving circuit 31 is used for inputting electric signals to the first electrode terminal and the second electrode terminal of the near field communication antenna 1 to drive the near field communication antenna 1, and the electrostatic protection circuit 32 is arranged between the driving circuit 31 and the near field communication antenna 1, so that the driving circuit 31 is communicated with the near field communication antenna 1 through the electrostatic protection circuit, and the electrostatic protection circuit 32 eliminates static electricity on the near field communication antenna 1 and a polarizer or a substrate contacted with the near field communication antenna 1.

Alternatively, the electrostatic protection circuit 32 may include: a first switching tube T1, a second switching tube T2, a third switching tube T3, a fourth switching tube T4, a first transient suppression diode D1 and a second transient suppression diode D2; the first output terminal TX1 of the driving circuit 31 is electrically connected to the first terminal of the first switch transistor T1, and the second terminal of the first switch transistor T1 is electrically connected to the first terminal of the second switch transistor T2, the first electrode terminal a, and the first terminal of the first transient suppression diode D1, respectively; a second terminal of the second switch transistor T2 is connected to ground, and a second terminal of the first transient suppression diode D1 is connected to ground; a second output terminal TX2 of the driving circuit 31 is electrically connected to a first terminal of a third switching transistor T3, and a second terminal of the third switching transistor T3 is electrically connected to a first terminal of a fourth switching transistor T4, a second electrode terminal B, and a first terminal of a second transient suppression diode D2, respectively; a second end of the fourth switching tube T4 is connected to ground, and a second end of the second transient suppression diode D2 is connected to ground; the control ends of the first switch tube T1, the second switch tube T2, the third switch tube T3 and the fourth switch tube T4 are all electrically connected with an enable signal output end EN; the first switch tube T1 and the third switch tube T3 are N-type switch tubes, and the second switch tube T2 and the fourth switch tube T4 are P-type switch tubes.

Fig. 24 shows a structure of an electrostatic protection circuit, and the driving circuit 31 includes a first output terminal TX1 and a second output terminal TX2, the first output terminal TX1 is used for outputting a signal to the first electrode terminal a of the loop antenna, and the second output terminal TX2 is used for outputting a signal to the second electrode terminal B of the loop antenna. In the electrostatic protection circuit 32, the first switch tube T1 and the second switch tube T2 are combined, the control terminals of the first switch tube T1 and the second switch tube T2 are both conducted with the enable signal output terminal EN, the first terminal of the first switch tube T1 is connected to the first output terminal TX1 of the driving circuit 31, the second terminal is connected to the first terminal of the second switch tube T2, the first switch tube T1 is an N-type switch tube, the second switch tube T2 is a P-type switch tube, the first switch tube T1 and the second switch tube T2 are not conducted at the same time, when the enable signal output terminal EN controls the first switch tube T1 to be conducted, the first output terminal TX1 of the driving circuit 31 outputs an electric signal to the first electrode terminal a, and the first transient suppression diode D1 can discharge static electricity generated during the operation of the driving circuit 31, the first transient suppression diode D1 absorbs transient high current impact at both ends, and voltage limiting is performed. The electrostatic current generated by the driving circuit 31 can be absorbed by the first transient suppression diode D1. When the enable signal output terminal EN controls the second switch tube T2 to be turned on, the first switch tube T1 is turned off, the first output terminal TX1 of the driving circuit 31 cannot output a voltage to the first electrode terminal a, and the first electrode terminal a is directly grounded through the second switch tube T2, so that the loop antenna is used as a ground coil of the display panel to perform electrostatic discharge.

Similarly, the third switch tube T3 and the fourth switch tube T4 are also used for performing electrostatic protection on the driving circuit 31 through the second transient suppression diode D2 when the second output terminal TX2 of the driving circuit 31 outputs a signal to the second electrode terminal B, and when the signal output from the second output terminal TX2 of the driving circuit 31 cannot be transmitted to the second electrode terminal B, the second electrode terminal B is grounded through the fourth switch tube T4, so that the loop antenna is used as a ground coil of the display panel to perform electrostatic discharge.

Optionally, referring to fig. 25, fig. 25 is a schematic structural diagram of another display module according to an embodiment of the present invention, where the loop antenna of the near field communication antenna 1 further includes a null terminal C; the null terminal C is connected to the loop antenna, and the length of the loop antenna between the null terminal C and the first electrode terminal a is the same as the length of the loop antenna between the null terminal C and the second electrode terminal B, refer to the near field communication antenna 1 shown in fig. 1; the electrostatic protection circuit 32 may include: a first switching tube T1, a second switching tube T2, a third switching tube T3, a fourth switching tube T4, a fifth switching tube T5, a sixth switching tube T6 and a third transient suppression diode D3; a first output terminal TX1 of the driving circuit 31 is electrically connected to a first terminal of a first switch transistor T1, and a second terminal of the first switch transistor T1 is electrically connected to a first terminal of a second switch transistor T2 and a first electrode terminal a, respectively; a second end of the second switch tube T2 is connected to ground; a second output end of the driving circuit 31 is electrically connected to a first end of a third switching tube T3, and a second end of the third switching tube T3 is electrically connected to a first end and a second electrode terminal of a fourth switching tube T4, respectively; a second end of the fourth switching tube T4 is connected to ground; a third output terminal TVSS of the driving circuit 31 is electrically connected to a first terminal of a fifth switching transistor T5, and a second terminal of the fifth switching transistor T5 is electrically connected to a first terminal of a sixth switching transistor T6, a zero terminal C, and a first terminal of a third transient suppression diode D3, respectively; a second terminal of the sixth switching tube T6 is connected to ground, and a second terminal of the third transient suppression diode D3 is connected to ground; the control ends of the first switch tube T1, the second switch tube T2, the third switch tube T3, the fourth switch tube T4, the fifth switch T5 and the sixth switch T6 are all electrically connected with an enable signal output end EN; the first switch tube T1, the third switch tube T3 and the fifth switch tube T5 are N-type switch tubes, and the second switch tube T2, the fourth switch tube T4 and the sixth switch tube T6 are P-type switch tubes.

The electrostatic discharge circuit in fig. 25 is suitable for the near field communication antenna including the null terminal C shown in fig. 1 and 14. The first switch tube T1, the second switch tube T2, the third switch tube T3, the fourth switch tube T4, the fifth switch T5 and the sixth switch T6 are used for eliminating the electrostatic current of the driving circuit 31 through the third transient suppression diode D3 when the near field communication antenna works, and the first electrode terminal a, the null terminal C and the first electrode terminal B are grounded when the near field communication antenna does not work, so that the near field communication antenna is used as a ground coil of the display module.

Optionally, the driving circuit may include a radio frequency chip 311, a filter circuit 312, and a matching circuit 313. The rf chip 311 is configured to output a driving signal, the filter circuit 312 is configured to filter the driving signal, and the matching circuit 313 is configured to perform voltage matching with a corresponding nfc antenna.

Alternatively, the esd protection circuit 32 may be integrated into the driving chip of the display panel 2 or integrated on the flexible circuit board bound to the display module 3.

An embodiment of the present invention further provides a display system, as shown in fig. 26, fig. 26 is a schematic structural diagram of the display system provided in the embodiment of the present invention, and the display system includes a display module provided in any embodiment of the present invention; the display module is integrated in the monitor 4 of the display system. The display system in the embodiment of the invention has all the technical effects of the display module provided by the embodiment of the invention.

Optionally, the display system may further include: a cardiac pacemaker; the monitor 4 is electrically connected with the cardiac pacemaker and is used for monitoring the working state of the cardiac pacemaker.

The cardiac pacemaker, as an artificial implanted device for assisting the heart to work, has saved the lives of countless patients since birth and is an important component of cardiac medicine. The remote monitoring equipment of the existing cardiac pacemaker is professional medical equipment, and patients and family members cannot use the equipment, and the conditions of the heart and the pacemaker cannot be monitored at any time. The monitor 4 provided by this embodiment can establish a connection with the cardiac pacemaker through near field communication.

Optionally, with continued reference to fig. 26, the cardiac pacemaker may comprise: a pulse generator 5 and an electrode 6; the electrode 6 is arranged in the heart and used for stimulating the heart to beat according to the pacing frequency; the pulse generator 5 is arranged under the chest skin and used for setting the pacing frequency and sending the pacing frequency to the electrode 6; the monitor 4 is arranged on the surface of the chest and is electrically connected with the pulse generator 5 through a near-field communication antenna. The monitor 4 can be attached to the cardiac pacemaker in the form of a skin patch or placed in an upper body pocket of close-fitting clothing of a patient, and is communicated with the pulse generator 5 at regular time through a near-field communication antenna. The monitor 4 can monitor the physiological status of the patient at any time to properly adjust the pacing parameters of the pacemaker and feed back the working status, battery capacity and the like of the cardiac pacemaker at any time. When the physical signs of the patient are abnormal and the condition endangering the life of the patient occurs, the monitor 4 is used for sounding prompt and automatically contacting the family members to ask for help in time.

Optionally, the display module may include an electrostatic protection circuit; the electrostatic protection circuit is electrically connected with the near field communication antenna. The static protection circuit is electrically connected with the near field communication antenna and is used for releasing static generated by friction of the monitor 4 and a human body, and specifically, the near field communication antenna can be used as a grounding coil of the monitor 4 in an inoperative state, so that static releasing is carried out on the monitor 4.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A near field communication antenna, comprising: a substrate base plate;

the substrate is provided with a loop antenna, the loop antenna comprises a cross-line area and a loop routing, the loop antenna further comprises a first electrode terminal and a second electrode terminal, the loop routing is connected with the first electrode terminal and the second electrode terminal, and signals of the loop antenna can reach the second electrode terminal from the first electrode terminal; the looped routing comprises an M1 bottom layer structure arranged on a substrate base plate and an M2 top layer structure which is in contact with the bottom layer structure and is far away from the substrate base plate, and the crossover region comprises an M1 bottom layer structure arranged on the substrate base plate, an insulating layer in contact with the bottom layer structure and an M2 top layer structure which is in contact with the insulating layer and is far away from the insulating layer; m1 and M2 are each integers greater than or equal to 1;

the substrate base plate is reused as a base plate of the display panel; or the substrate base plate is reused as a glass cover plate of the display panel, and the glass cover plate is arranged on the display side of the display panel;

in a plane parallel to the substrate base plate, the width of the bottom layer structure in the direction perpendicular to the extending direction of the annular routing is larger than the width of the top layer structure in the direction perpendicular to the extending direction of the annular routing.

2. Near field communication antenna according to claim 1,

the substrate base plate comprises a first substrate base plate and a second substrate base plate; the first substrate includes a display area and a non-display area surrounding the display area; the annular routing is arranged in a non-display area of the first substrate base plate, the annular routing comprises N turns of annular structures which are sequentially arranged from the center to the edge, and the annular structures are all arranged around the display area; wherein N is an integer greater than or equal to 2;

the crossover region, the first electrode terminal, and the second electrode terminal are disposed on the second substrate.

3. Near field communication antenna according to claim 1,

the substrate base plate comprises a third substrate base plate, and the third substrate base plate comprises a display area and a non-display area surrounding the display area; the loop antenna is arranged in the non-display area; in a plane parallel to the third substrate, the ring-shaped routing comprises N turns of ring-shaped structures which are sequentially arranged from the center to the edge, and the ring-shaped structures are all arranged around the display area; wherein N is an integer greater than or equal to 2; and two adjacent ring-shaped structures are connected through a crossover line arranged in the crossover line area.

4. A near field communication antenna according to claim 3, wherein the crossover region comprises a first crossover region;

each ring-like structure comprises a first end and a second end in a plane parallel to the third substrate base; the second end of the ith turn of annular structure is connected with the first end of the (i + 1) th turn of annular structure through the first jumper of the first jumper zone; i is an integer which is greater than or equal to 1 and less than N;

a second end of the nth turn annular structure is electrically connected with the first electrode terminal; a first end of the 1 st turn ring structure is electrically connected to the second electrode terminal through a second jumper of the first jumper region.

5. Near field communication antenna according to claim 4,

the first overline is arranged on the bottom layer structure of the first overline area, and the second overline is arranged on the top layer structure of the first overline area; alternatively, the first and second electrodes may be,

the first crossover line is arranged on the top layer structure of the first crossover line area, and the second crossover line is arranged on the bottom layer structure of the first crossover line area.

6. A near field communication antenna according to claim 3, wherein the crossover region comprises a second crossover region and a third crossover region; n is an even number greater than 2;

in a plane parallel to the third substrate base plate, the 1 st turn ring structure comprises a third end and a fourth end, and the jth turn ring structures each comprise a third end, a fourth end, a fifth end and a sixth end; the third end and the fourth end of the 1 st turn ring structure are located at the second crossover region; a third end and a fourth end of the jth turn ring structure are located at the second crossover region; a fifth end and a sixth end of the jth turn of the ring structure are both located at the third span region; the third end and the fifth end of the j-th turn of annular structure are communicated through the annular structure, and the fourth end and the sixth end are communicated through the annular structure; j is an integer greater than 1 and less than or equal to N;

the fourth end of the kth turn of ring-shaped structure is connected with the third end of the kth +1 th turn of ring-shaped structure through the third jumper of the second jumper zone, and the third end of the kth turn of ring-shaped structure is connected with the fourth end of the kth +1 th turn of ring-shaped structure through the fourth jumper of the second jumper zone; a fifth end of the (k + 1) th turn of ring-shaped structure is connected with a sixth end of the (k + 2) th turn of ring-shaped structure through a fifth jumper of the third jumper, and a sixth end of the (k + 1) th turn of ring-shaped structure is connected with a fifth end of the (k + 2) th turn of ring-shaped structure through a sixth jumper of the third jumper; k is an odd number of 1 or more and less than N-2;

a fifth end of the nth turn annular structure is electrically connected to the first electrode terminal and a sixth end is electrically connected to the second electrode terminal.

7. Near field communication antenna according to claim 6,

the third cross line is arranged on the bottom layer structure of the second cross line area, and the fourth cross line is arranged on the top layer structure of the second cross line area; or the third crossover line is arranged on the top layer structure of the second crossover line area, and the fourth crossover line is arranged on the bottom layer structure of the second crossover line area;

the fifth overline is arranged on the bottom layer structure of the third overline area, and the sixth overline is arranged on the top layer structure of the third overline area; or the fifth crossover line is arranged on the top layer structure of the third crossover line area, and the sixth crossover line is arranged on the bottom layer structure of the third crossover line area.

8. A near field communication antenna according to claim 3, wherein N-2; the crossover region comprises a second crossover region; the 1 st turn of the ring-shaped structure comprises a third end and a fourth end, and the 2 nd turn of the ring-shaped structure comprises a third end, a fourth end, a fifth end and a sixth end; the third end and the fourth end of the 1 st turn ring structure are located at the second crossover region; a third end and a fourth end of the 2 nd turn ring structure are located at the second crossover region; the third end and the fifth end of the 2 nd turn annular structure are communicated through the annular structure, and the fourth end and the sixth end are communicated through the annular structure;

a fourth end of the 1 st turn of ring-shaped structure is connected with a third end of the 2 nd turn of ring-shaped structure through a third jumper of a second jumper zone, and the third end of the 1 st turn of ring-shaped structure is connected with the fourth end of the 2 nd turn of ring-shaped structure through a fourth jumper of the second jumper zone; a fifth end of the 2 nd turn annular structure is electrically connected to the first electrode terminal, and a sixth end is electrically connected to the second electrode terminal.

9. Near field communication antenna according to claim 8,

the third crossover line is arranged on the bottom layer structure of the second crossover line area, and the fourth crossover line is arranged on the top layer structure of the second crossover line area; alternatively, the first and second electrodes may be,

the third crossover line is arranged on the top layer structure of the second crossover line area, and the fourth crossover line is arranged on the bottom layer structure of the second crossover line area.

10. A near field communication antenna according to claim 8, wherein the loop antenna is a symmetrical structure with respect to a first center line;

the first electrode terminal and the second electrode terminal are symmetrically disposed about the first center line;

the second crossover region is symmetrical about the first centerline.

11. A near field communication antenna according to claim 10, wherein the loop antenna further comprises a null terminal; the zero terminal is located between the first electrode terminal and the second electrode terminal;

the zero terminal is connected with the 1 st turn of annular structure and is positioned on the first central line.

12. A near field communication antenna according to claim 1, wherein the insulating layer is an insulating ink.

13. A near field communication antenna according to claim 1, wherein a side of the loop antenna remote from the substrate base plate is covered with a protective layer.

14. Near field communication antenna according to claim 1,

the bottom layer structure and the top layer structure are formed through a screen printing process; the bottom layer structure and the top layer structure are made of conductive silver paste.

15. Near field communication antenna according to claim 1,

the thickness of the annular routing is 40-50 μm.

16. A method for manufacturing a near field communication antenna is characterized by comprising the following steps:

providing a substrate base plate; the substrate base plate is reused as a base plate of the display panel; or the substrate base plate is reused as a glass cover plate of the display panel, and the glass cover plate is arranged on the display side of the display panel;

set up loop antenna on the substrate base plate, specifically include:

laying an M2 layer top layer structure of the ring-shaped wire on the bottom layer structure of the ring-shaped wire, and laying an M2 layer top layer structure of the wire crossing area on the insulating layer of the wire crossing area; m2 is an integer greater than or equal to 1;

17. A display module comprising the nfc antenna of any one of claims 1-15, further comprising: a display panel; the near field communication antenna is attached to the display panel;

the substrate of the display panel is reused as a substrate of the near field communication antenna; alternatively, the first and second electrodes may be,

the display module further comprises a glass cover plate; the glass cover plate is arranged on the display side of the display panel;

the glass cover plate is reused as a substrate base plate of the near field communication antenna; and the loop antenna of the near field communication antenna is arranged on one side of the glass cover plate close to the display panel.

18. The display module of claim 17, further comprising: a driving circuit and an electrostatic protection circuit;

the driving circuit is used for driving the near field communication antenna;

the electrostatic protection circuit is electrically connected with the driving circuit and the near field communication antenna respectively.

19. The display module of claim 18, wherein the esd protection circuit comprises: the transient suppression circuit comprises a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, a first transient suppression diode and a second transient suppression diode;

a first output end of the driving circuit is electrically connected with a first end of the first switching tube, and a second end of the first switching tube is electrically connected with a first end of the second switching tube, the first electrode terminal and a first end of the first transient suppression diode respectively; the second end of the second switch tube is connected with the ground end, and the second end of the first transient suppression diode is connected with the ground end;

a second output end of the driving circuit is electrically connected with a first end of a third switching tube, and a second end of the third switching tube is electrically connected with a first end of the fourth switching tube, the second electrode terminal and a first end of the second transient suppression diode respectively; a second end of the fourth switching tube is connected with the ground end, and a second end of the second transient suppression diode is connected with the ground end;

the control ends of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are electrically connected with the enable signal output end;

the first switching tube and the third switching tube are N-type switching tubes, and the second switching tube and the fourth switching tube are P-type switching tubes.

20. The display module of claim 18, wherein the loop antenna of the nfc antenna further comprises a null terminal; the null terminal is connected with the loop antenna, and the length of the loop antenna between the null terminal and the first electrode terminal is the same as the length of the loop antenna between the null terminal and the second electrode terminal;

the electrostatic protection circuit includes: the first switching tube, the second switching tube, the third switching tube, the fourth switching tube, the fifth switching tube, the sixth switching tube and the third transient suppression diode;

a first output end of the driving circuit is electrically connected with a first end of the first switching tube, and a second end of the first switching tube is electrically connected with a first end of the second switching tube and the first electrode terminal respectively; the second end of the second switch tube is connected with the ground end;

a second output end of the driving circuit is electrically connected with a first end of the third switching tube, and a second end of the third switching tube is electrically connected with a first end of the fourth switching tube and the second electrode terminal respectively; the second end of the fourth switching tube is connected with the ground end;

a third output end of the driving circuit is electrically connected with a first end of the fifth switching tube, and a second end of the fifth switching tube is electrically connected with a first end of the sixth switching tube, the zero terminal and a first end of the third transient suppression diode respectively; a second end of the sixth switching tube is connected with a ground end, and a second end of the third transient suppression diode is connected with the ground end;

the control ends of the first switch tube, the second switch tube, the third switch tube, the fourth switch tube, the fifth switch and the sixth switch are all electrically connected with the enabling signal output end;

the first switch tube, the third switch tube and the fifth switch tube are N-type switch tubes, and the second switch tube, the fourth switch tube and the sixth switch tube are P-type switch tubes.

21. The display module of claim 18, wherein the esd protection circuit is integrated in a driver chip of the display panel or on a flexible circuit board bound to the display module.

22. A display system comprising the display module of any one of claims 17-21; the display module is integrated in the monitor of the display system.

23. The display system of claim 22, further comprising: a cardiac pacemaker; the monitor is electrically connected with the cardiac pacemaker and is used for monitoring the working state of the cardiac pacemaker.

24. The display system of claim 23, wherein the cardiac pacemaker comprises: a pulse generator and an electrode;

the electrodes are arranged in the heart and used for stimulating the heart to beat according to the pacing frequency; the pulse generator is arranged under the chest skin and used for setting the pacing frequency and sending the pacing frequency to the electrodes;

the monitor is arranged on the surface of the chest and is electrically connected with the pulse generator through the near-field communication antenna.

25. The display system of claim 24, wherein the display module comprises an electrostatic protection circuit; the electrostatic protection circuit is electrically connected with the near field communication antenna.