Electromagnetic film, electromagnetic-capacitive integrated film, touch display apparatus, electromagnetic touch module, writing apparatus and electronic device

Abstract

Disclosed in the present invention are an electromagnetic film, an electromagnetic-capacitive integrated film, a touch display apparatus, an electromagnetic touch module, a writing apparatus, and an electronic device. The electromagnetic film comprises a first substrate, a plurality of first receiving coils, and a plurality of second receiving coils. The first substrate is made of an insulating material, and comprises a first surface and a second surface which are oppositely arranged. The plurality of first receiving coils are disposed on the first surface, and are arranged in parallel in a first arrangement direction X. The plurality of second receiving coils are disposed on the second surface, and are arranged in parallel in a second arrangement direction Y. The projections of first metal wires of the first receiving coils and second metal wires of the second receiving coils on the first surface or the second surface are arranged in a crossed manner, and the effect of insulation between the first receiving coils and the second receiving coils can be directly achieved by means of the first substrate.

Description

An electromagnetic film, a magnetic and capacitive integrated film, a touch display device, an electromagnetic touch module, a writing device and an electronic equipment

[0001] Priority information: This application claims priority to Chinese patent application No. 2024208297369 filed on April 19, 2024, and Chinese patent application No. 2024104775949 filed on April 19, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of touch control, and in particular to an electromagnetic film, a magnetic and capacitive integrated film, a touch display device, an electromagnetic touch module, a writing device and an electronic equipment. BACKGROUND

[0003] The working principle of the electromagnetic touch screen is that an electromagnetic signal is emitted by an electromagnetic pen and interacts with an electromagnetic film behind the display screen. When the electromagnetic pen approaches the touch screen, the electromagnetic film behind the liquid crystal screen senses the electromagnetic signal of the pen, thereby causing the sensing line under the electromagnetic film to change. The horizontal and vertical antenna (or electromagnetic sensing line, metal line, conductive line, etc.) arrays receive the signal. The electromagnetic pen is the signal transmitting end, and the antenna array is the signal receiving end. The X and Y coordinate positions of the pen are calculated based on the change in magnetic flux. However, since the electromagnetic film is opaque, it can only be placed below the liquid crystal screen. The electromagnetic induction sensor and the shielding film are combined below the screen, which results in complex structure, high organization cost, etc.

[0004] In related technologies, the antenna array of the electromagnetic film is usually arranged on the same side of the base material. For example, a Chinese utility model patent with application number 201820908127.7 discloses a direct type backlight display module and display device, in which the electromagnetic induction lines are arranged on one side of the transparent electromagnetic film backlight surface. Since the electromagnetic induction lines are in a grid shape, and the intersection points of the electromagnetic induction lines need to be insulated, the manufacturing process is relatively complex when the electromagnetic induction lines are arranged on the same surface.

[0005] Further, due to the presence of the antenna array, the light transmittance of the electromagnetic film in the prior art is relatively low, which will cause the picture quality to decrease when it is combined with the display screen, thereby affecting the viewing experience. In the above-mentioned patent document, the diffusion plate, the increment film and the diffusion film are arranged to reduce the picture yellowing problem, which increases the complexity of the structure and the cost.

[0006] In addition, some devices include a writing panel and an electromagnetic film located inside the writing panel. The electromagnetic film includes a metal grid sensor. When the electromagnetic pen moves on the writing panel, the magnetic field sensed by the metal grid sensor due to the electromagnetic pen will change, and the movement trajectory of the electromagnetic pen can be calculated based on the change in the magnetic field.

[0007] In the related art, the electromagnetic film is integrated below a writing panel, which can be a display screen with display function, and the device using the electromagnetic film can be a mobile phone or an ink screen product, etc., which has a high cost. The writing panel can also be an insulating hard board without display function, and the device using the electromagnetic film can be a digitizing tablet, a signature board (at a bank counter) or an electronic drawing board, etc., in which the handwriting needs to be connected to a display screen to be seen, and the writing is inconvenient.

[0008] In the related art, the electromagnetic film is integrated inside an electronic device, which has poor versatility. For products without the electromagnetic film, the electromagnetic pen cannot be used for writing, and the overall cost of the electronic device is high.

[0009] Therefore, it is necessary to improve the prior art to overcome the above-mentioned defects in the prior art. SUMMARY

[0010] The purpose of the present application is to provide an electromagnetic film, a magnetic and capacitive integrated film, a touch display device, an electromagnetic touch module, a writing device and an electronic device, which can reduce the manufacturing difficulty of the electromagnetic film.

[0011] To achieve the above-mentioned purpose of the application, in a first aspect, the present application provides an electromagnetic film, comprising:

[0012] A first substrate made of an insulating material and comprising a first surface and a second surface arranged oppositely;

[0013] A plurality of first receiving coils arranged on the first surface, the plurality of first receiving coils are arranged in parallel along a first arrangement direction X, and each of the first receiving coils comprises two first metal wires arranged in parallel along the first arrangement direction X; and

[0014] A plurality of second receiving coils arranged on the second surface, the plurality of second receiving coils are arranged in parallel along a second arrangement direction Y, and each of the second receiving coils comprises two second metal wires arranged in parallel along the second arrangement direction Y.

[0015] The projections of the first metal wires and the second metal wires on the first surface or the second surface are arranged in cross.

[0016] In a second aspect, the present application provides a magnetic and capacitive integrated film, comprising a capacitive sensor and the electromagnetic film as described above.

[0017] In a third aspect, the present application provides a touch display device, comprising the electromagnetic film as described above.

[0018] In a fourth aspect, the present application provides an electromagnetic touch module, comprising:

[0019] The flexible transparent touch film is used for covering the external writable substrate and is the electromagnetic film and is flexible and transparent.

[0020] The controller is electrically connected with the flexible transparent touch film and comprises an electromagnetic sensor driver and a control chip.

[0021] The data transmission module is electrically connected with the control chip and is used for data transmission with an external device.

[0022] In the fifth aspect, the present application provides a writing device comprising an electromagnetic pen and the electromagnetic touch module.

[0023] In the sixth aspect, the present application provides an electronic device comprising a display screen and the electromagnetic touch module or the writing device.

[0024] The flexible transparent touch film is attached to the outer surface of the display screen and is in communication connection with the display screen through the data transmission module.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] According to some embodiments of the present application, the first receiving coil and the second receiving coil of the electromagnetic film are arranged on opposite surfaces of the same first substrate, and the first receiving coil and the second receiving coil can be directly insulated by the first substrate, without the need for insulation treatment at the intersection of the metal wires of the first receiving coil and the second receiving coil, which is conducive to reducing the manufacturing difficulty.

[0027] According to some embodiments of the present application, the electromagnetic touch module comprises the flexible transparent touch film which is used for covering the external writable substrate, and the flexible transparent touch film can be removed from the writable substrate and covered on other writable substrates for writing, so that the flexible transparent touch film has better versatility and is conducive to enabling some objects which originally do not have the electromagnetic pen writing function to have the electromagnetic pen writing function. BRIEF DESCRIPTION OF DRAWINGS

[0028] FIG. 1a is a sectional view of the electromagnetic film according to some embodiments of the present application.

[0029] FIG. 1b is a sectional view of the electromagnetic film according to some embodiments of the present application.

[0030] FIG. 2 is a layout diagram of the first receiving coil and the second receiving coil according to some embodiments of the present application.

[0031] FIG. 3 is a position schematic diagram of the first metal wire and the second metal wire according to some embodiments of the present application, wherein the first metal wire and the second metal wire are perpendicular to each other.

[0032] Figure 4 is a schematic diagram of the positions of the first metal lines and the second metal lines in some embodiments of the present application, in which the first metal lines and the second metal lines intersect in a diamond shape.

[0033] Figure 5 is a schematic diagram of the positions of the first electromagnetic energy- supplying antennas in some embodiments of the present application.

[0034] Figure 6 is a cross-sectional view of an electromagnetic film in some embodiments of the present application, in which the second substrate and the first electromagnetic energy- supplying antennas are shown.

[0035] Figure 7 is a cross-sectional view of an electromagnetic film in other embodiments of the present application.

[0036] Figure 8 is a cross-sectional view of an electromagnetic film in other embodiments of the present application.

[0037] Figure 9 is a cross-sectional view of a magnetic and capacitive integrated film in some embodiments of the present application.

[0038] Figure 10 is a cross-sectional view of the capacitive sensor shown in Figure 9.

[0039] Figure 11 is a schematic diagram of the positions of a partial first metal mesh layer and a first metal line array in some embodiments of the present application.

[0040] Figure 12 is a schematic diagram of the positions of a partial second metal mesh layer and a second metal line array in some embodiments of the present application.

[0041] Figure 13 is a cross-sectional view of a touch display device in some embodiments of the present application.

[0042] Figure 14 is a block diagram of an electromagnetic touch module in some embodiments of the present application.

[0043] Figure 15 is a schematic diagram of a flexible transparent touch film when it is placed on a writing substrate in some embodiments of the present application.

[0044] Figure 16 is a block diagram of an electromagnetic touch module in some embodiments of the present application.

[0045] Figure 17 is a schematic diagram of an electromagnetic touch module in some embodiments of the present application, in which data lines are shown.

[0046] Figure 18 is a schematic diagram of an electromagnetic touch module in some embodiments of the present application, in which data interfaces are shown.

[0047] Figure 19 is a schematic diagram of a flexible transparent touch film when it is provided with a protective film in some embodiments of the present application.

[0048] Figure 20 is a schematic diagram of a flexible transparent touch film when it is provided with a protective film and a hardening coating in some embodiments of the present application.

[0049] Fig. 21 is a module block diagram of an electromagnetic touch module according to some embodiments of the present application.

[0050] Fig. 22 is a structural diagram of a flexible transparent touch film according to some embodiments of the present application.

[0051] Fig. 23 is a module block diagram of an electromagnetic touch module according to some embodiments of the present application.

[0052] Fig. 24 is a diagram of a flexible transparent touch film provided with a first electromagnetic shielding film according to some embodiments of the present application.

[0053] Fig. 25 is a diagram of a first electromagnetic shielding film placed under a writing substrate according to some embodiments of the present application.

[0054] Fig. 26 is a structural diagram of a writing device according to some embodiments of the present application.

[0055] Fig. 27 is a structural diagram of an electronic device according to some embodiments of the present application. DETAILED DESCRIPTION

[0056] In order to make the above objectives, features and advantages of the present application more obvious and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the accompanying drawings for the purpose of description, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0057] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to the process, method, product or device.

[0058] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0059] Embodiment 1

[0060] As shown in FIG. 1a and FIG. 1b, the present application proposes an electromagnetic film 1, which comprises a first substrate 10 and an electromagnetic sensor 11 arranged on the surface of the first substrate 10, the electromagnetic sensor 11 is a metal mesh sensor, as shown in FIG. 2, which comprises a plurality of first receiving coils 110 arranged in parallel along a first arrangement direction X and a plurality of second receiving coils 111 arranged in parallel along a second arrangement direction Y, the first arrangement direction X and the second arrangement direction Y are not parallel.

[0061] The first receiving coil 110 comprises two first metal wires 1100 arranged in parallel along the first arrangement direction X, and the second receiving coil 111 comprises two second metal wires 1110 arranged in parallel along the second arrangement direction Y. Referring to FIG. 3 and FIG. 4, the electromagnetic sensor 11 comprises a plurality of first metal wires 1100 arranged in parallel and a plurality of second metal wires 1110 arranged in parallel, the plurality of first metal wires 1100 constitutes a first metal wire array 112, and the plurality of second metal wires 1110 constitutes a second metal wire array 113.

[0062] The projections of the first metal wire 1100 and the second metal wire 1110 on the first substrate 10 (for example, the first surface 10a or the second surface 10b thereof) are arranged in cross, as shown in FIG. 3 and FIG. 4, the first metal wire 1100 is shown in solid line, and the second metal wire 1110 is shown in dashed line. The first receiving coil 110 and the second receiving coil 111 can sense the change of the magnetic field caused by the electromagnetic pen 2, and after calculation by the controller, the coordinates of the electromagnetic pen 2 in the X and Y directions can be obtained, in addition, in combination with the change of the magnetic field, the inclination angle and other parameters of the electromagnetic pen 2 can also be obtained.

[0063] Optionally, two adjacent first receiving coils 110 are arranged in interval and do not intersect with each other, and two adjacent second receiving coils 111 are arranged in interval and do not intersect with each other.

[0064] The first metal wire 1100 and the second metal wire 1110 can be arranged on the same surface of the first substrate 10 (for example, the first surface 10a or the second surface 10b of the first substrate 10) (referring to FIG. 1b), or can be arranged on two surfaces of the first substrate 10 respectively, that is, arranged on the first surface 10a or the second surface 10b respectively (referring to FIG. 1a). When arranged on the same surface, the intersection of the first metal wire 1100 and the second metal wire 1110 needs to be insulated.

[0065] In some embodiments, the first metal wires 1100 and the second metal wires 1110 are arranged on two surfaces of the first substrate 10 respectively, as shown in FIG. 1a, the first substrate 10 comprises a first surface 10a and a second surface 10b arranged oppositely. The first metal wire array 112 is arranged on the first surface 10a and comprises a plurality of first metal wires 1100 arranged in parallel. The second metal wire array 113 is arranged on the second surface 10b and comprises a plurality of second metal wires 1110 arranged in parallel. The projections of the first metal wires 1100 and the second metal wires 1110 on the first surface 10a or the second surface 10b are arranged in a cross manner, and the projections of the two on the same surface of the first substrate 10 are arranged in a grid manner.

[0066] The first metal wire array 112 is arranged on the first surface 10a of the first substrate 10, and the second metal wire array 113 is arranged on the second surface 10b of the first substrate 10. Similarly, the positions of the first metal wire array 112 and the second metal wire array 113 can be exchanged, i.e., the first metal wire array 112 is arranged on the second surface 10b of the first substrate 10, and the second metal wire array 113 is arranged on the first surface 10a of the first substrate 10. Since the first metal wire array 112 and the second metal wire array 113 are arranged on opposite sides of the first substrate 10, the first metal wire array 112 and the second metal wire array 113 can be directly insulated by the first substrate 10 made of insulating material, achieving the effect of mutual insulation, without the need for additional insulation treatment at the intersection of the first metal wires 1100 and the second metal wires 1110, which is beneficial to reduce the manufacturing difficulty. At the same time, since the first metal wire array 112 and the second metal wire array 113 are arranged on the same first substrate 10, the thickness of the electromagnetic film 1 is effectively reduced, and the electromagnetic film is more lightweight. When the first substrate 10 is made of transparent material, the electromagnetic film can obtain better light transmittance.

[0067] The materials of the first metal wires 1100 and the second metal wires 1110 are, for example, copper, silver or gold, etc. The preparation of the first metal wire array and the second metal wire array can adopt existing processes, such as coating, exposure, development, copperization, blackening, PMMA, etc. on the surface of the first substrate 10 to obtain a metal wire array. Blackening can reduce the reflectivity.

[0068] The first metal wires 1100 and the second metal wires 1110 are part of the receiving coils, the arrangement direction of the first receiving coil 110 is consistent with the arrangement direction of the first metal wires 1100, and the arrangement direction of the second receiving coil 111 is consistent with the arrangement direction of the second metal wires 1110.

[0069] In some embodiments, the electromagnetic film 1 is transparent, the line width of the first metal wires 1100 and the second metal wires 1110 is 1.0-5.0 um, which is invisible to the naked eye, and can effectively improve the light transmittance of the electromagnetic film. Optionally, the line width of the first metal wires 1100 and the second metal wires 1110 is 2.0-4.0 um, and the light transmittance of the electromagnetic film 1 formed after wiring on the first substrate 10 can reach more than 88%, which is beneficial to improve the picture quality and ensure the visual effect when combined with the display screen. Further optionally, the first metal wires 1100 and the second metal wires 1110 are arranged to have a line width of 2.5-4 um.

[0070] As shown in FIGS. 3 and 4, the distance W1 between two adjacent first metal wires 1100 ranges from 200 to 800 um, and the distance W2 between two adjacent second metal wires 1110 ranges from 200 to 800 um. On the one hand, this can improve the reliability and sensitivity of electromagnetic induction of the electromagnetic film 1, and on the other hand, it can ensure the light transmittance. Optionally, the included angle a between the first metal wires 1100 and the second metal wires 1110 is 45-135°, for example, it can be 45°, 90° and 135°, etc. It can be understood that the included angle a is also the included angle between the first arrangement direction X and the second arrangement direction Y. In some embodiments, as shown in FIG. 3, the first metal wires 1100 and the second metal wires 1110 are arranged in a staggered manner in a square shape, and the projection of the first metal wires 1100 and the second metal wires 1110 on the first surface 10a or the second surface 10b has an included angle of 90°. In other embodiments, as shown in FIG. 4, the included angle between the first metal wires 1100 and the second metal wires 1110 is less than 90°, and the first metal wires 1100 and the second metal wires 1110 are arranged in a staggered manner in a diamond shape. Of course, other shapes can also be designed according to needs, which are not limited herein.

[0071] The first substrate 10 is made of a transparent material, and the first substrate 10 is one of a PET film, a PC film, a PI film, a COP film, a COC film, a PEN film, a TAC film, a PC / PMMA composite film, or sodium-calcium glass or aluminum-silicon glass. Preferably, the thickness D of the first substrate 10 is 10-100 um, so that the first substrate 10 has good light transmittance, and the prepared electromagnetic film 1 is flexible and can be bent.

[0072] When writing on the surface of the electromagnetic film 1 using the electromagnetic pen, the metal wire array will generate electromagnetic induction, and the X, Y coordinate position of the pen can be calculated by the change of magnetic flux at different positions. Specifically, the closer to the receiving coil of the electromagnetic pen, the stronger the magnetic field strength, and when the electromagnetic pen moves, the greater the change of the magnetic flux, which will cause the change of the current in the first receiving coil 110 and the second receiving coil 111, so that the coordinate position of the pen can be calculated. It can be understood that the plurality of first receiving coils 110 arranged along the first arrangement direction X mainly induce the change of the magnetic flux in the X direction, and the plurality of second receiving coils 111 arranged along the second arrangement direction Y mainly induce the change of the magnetic flux in the Y direction, therefore, the first receiving coil 110 and the second receiving coil 111 arranged along the first arrangement direction X and the second arrangement direction Y respectively can cooperate to obtain the X, Y coordinate position of the electromagnetic pen.

[0073] Embodiment 2

[0074] The electromagnetic energy supply coil connected with the electromagnetic film 1 can also be set as a passive electromagnetic pen energy supply.

[0075] In some embodiments, as shown in FIG. 5, the electromagnetic film 1 further comprises a first electromagnetic energy supply antenna 12, the first electromagnetic energy supply antenna 12 comprises at least one energy supply coil, and three energy supply coils are shown in FIG. 5. When there are multiple energy supply coils, they are preferably arranged concentrically. The first electromagnetic energy supply antenna 12 is used to supply energy for the passive electromagnetic pen. The first base material 10 can be provided with the first electromagnetic energy supply antenna 12 only on its first surface 10a or second surface 10b, or can be provided with the first electromagnetic energy supply antenna 12 on both surfaces, for example, part of the energy supply coil is arranged on the first surface 10a and part is arranged on the second surface 10b. The energy supply coil of the first electromagnetic energy supply antenna 12 is arranged outside the first metal wire array 112 and the second metal wire array 113, that is, when viewed in the direction perpendicular to the surface (the first surface 10a or the second surface 10b) of the electromagnetic film 1, the energy supply coil of the first electromagnetic energy supply antenna 12 is surrounded outside the first metal wire array 112 and the second metal wire array 113.

[0076] In some embodiments, the electromagnetic film 1 further comprises a second substrate 13 and a first electromagnetic power supply antenna 12 disposed on the surface of the second substrate 13, as shown in Fig. 6. The upper surface and / or the lower surface of the second substrate 13 can be provided with the first electromagnetic power supply antenna 12, which comprises at least one power supply coil, and when there are multiple power supply coils, they are preferably concentrically arranged. The first electromagnetic power supply antenna 12 is used to supply power to the passive electromagnetic pen. The power supply coil of the first electromagnetic power supply antenna 12 is outside the first metal wire array 112 and the second metal wire array 113, i.e. when viewed in the direction perpendicular to the surface (the first surface 10a or the second surface 10b) of the electromagnetic film 1, the power supply coil of the first electromagnetic power supply antenna 12 is outside the first metal wire array 112 and the second metal wire array 113. The second substrate 13 and the first electromagnetic power supply antenna 12 can be directly attached to the first substrate 10 and the metal wire array, or other layers can be provided therebetween.

[0077] Embodiment 3

[0078] In some embodiments, the electromagnetic film 1 is provided with a protective film 14 or a hardening coating 15 on one side or both sides, which is located on the outer side of the electromagnetic film 1. The first metal wire array 112 and / or the second metal wire array 113 are located between the first substrate 10 and the protective film 14 or the hardening coating 15. Specifically, when the electromagnetic film 1 has only one protective film 14 or hardening coating 15, the protective film 14 or hardening coating 15 can be located on the outer side of the first metal wire array 112 or the second metal wire array 113. When there are two protective films 14 or hardening coatings 15, they can be located on both sides of the electromagnetic film 1, for example, on the outer side of the first metal wire array 112 and the second metal wire array 113, respectively. The protective film 14 and the hardening coating 15 can be directly attached to the first metal wire array 112 and / or the second metal wire array 113, or other layers can be provided therebetween, such as the second substrate 13 and the first electromagnetic power supply antenna 12.

[0079] The protective film 14 or the hardening coating 15 provided on the outer side of the electromagnetic film 1 can prevent damage to the first metal wire array 112 and / or the second metal wire array 113, ensure the quality of the electromagnetic film 1, and facilitate the independent use of the electromagnetic film 1. The material of the protective film 14 can be, for example, a PET film, a PE film, a PI film, etc.; the material of the hardening coating 15 can be, for example, a modified acrylic resin system coating liquid, a polyurethane system coating liquid, etc. In some embodiments, as shown in Fig. 7, the first metal wire array 112 and the second metal wire array 113 are attached together with the protective film 14; in other embodiments, as shown in Fig. 8, the first metal wire array 112 is attached together with the protective film 14, and the second metal wire array 113 is attached together with the hardening coating 15.

[0080] It can be understood that on one side surface of the electromagnetic film 1, not limited to only setting the protective film 14 or only setting the hardening coating 15, but also can set the protective film 14 and the hardening coating 15 at the same time, and the stacking order of the protective film 14 and the hardening coating 15 is not limited.

[0081] Embodiment 4

[0082] As shown in FIG. 9, the application further proposes a magnetic and capacitive integrated film, comprising the electromagnetic film 1 and the capacitive sensor 3 (or capacitive touch sensor) connected with the electromagnetic film 1.

[0083] In some embodiments, the capacitive sensor 3 and the electromagnetic film 1 are attached. For example, the electromagnetic film 1 is bonded with the capacitive sensor 3 through the optical adhesive 42. Optionally, the capacitive sensor 3 is transparent and can perform capacitive sensing. When the finger touches the magnetic and capacitive integrated film, the capacitive sensor 3 will generate a change in capacitance, thereby sensing the touch of the finger. In this way, the magnetic and capacitive integrated film can not only sense the touch of the electromagnetic pen through the electromagnetic film, but also can sense the touch of the finger through the capacitive sensing mode, and the function is more comprehensive.

[0084] The capacitive sensor 3 can be attached on the first metal wire array 112 or the second metal wire array 113, and the surface of the capacitive sensor 3 can also be provided with the protective film 14 or the hardening coating 15 or the transparent cover plate 410.

[0085] The magnetic and capacitive integrated film has the functions of sensing capacitance and electromagnetism, and both the capacitive and electromagnetic functions are realized on the same film, the product thickness is obviously thinned, and has the advantages of being more beneficial to use, low cost and easy to implement.

[0086] Optionally, the capacitive sensor 3 comprises an insulating third substrate 30 and a grid layer 31 provided on one side or both sides of the third substrate 30, the material of the grid layer 31 is ITO or metal (such as copper, silver or gold, etc.), and the change in capacitance is sensed through the grid layer 31. In the embodiment shown in FIG. 10, the grid layer 31 is provided on both sides of the third substrate 30.

[0087] In some embodiments, the capacitive sensor 6 comprises a metal mesh layer disposed on the first surface 10a and / or the second surface 10b of the first substrate 10, and the change of the capacitance is sensed by the metal mesh layer. FIG. 11 shows a schematic view of the positions of the first metal mesh layer 32 and the first metal wire array 112 disposed on the first surface 10a in a partial view, and FIG. 12 shows a schematic view of the positions of the second metal mesh layer 33 and the second metal wire array 113 disposed on the second surface 10b in a partial view, which is directly below the portion shown in FIG. 11. In the same view, the first metal wire array 112 and the second metal wire array 113 are in U-shape and arranged vertically, and the first metal mesh layer 32 and the second metal mesh layer 33 are respectively located in the openings of the first metal wire array 112 and the second metal wire array 113. It can be understood that the portions shown in FIG. 11 and FIG. 12 can be distributed in an array on the first substrate 10. By such an arrangement, the metal mesh layer of the capacitive sensor 6 and the metal wire array of the electromagnetic film 1 are located on the same surface of the first substrate 10, and the total thickness of the film layers is thinner.

[0088] Embodiment 5

[0089] The present application also provides a touch display device comprising the electromagnetic film 1.

[0090] In some embodiments, the electromagnetic film 1 is transparent, and the touch display device further comprises a display screen 40 connected to the electromagnetic film 1, as shown in FIG. 13. The electromagnetic film 1 is connected to the outer surface of the display screen 40. Optionally, the touch display device further comprises a transparent capacitive screen 41, and the electromagnetic film 1 is connected between the capacitive screen 41 and the display screen 40; the electromagnetic film 1 is bonded to the capacitive screen 41 and the display screen 40 by optical adhesive 42.

[0091] Since the electromagnetic film 1 and the capacitive screen 41 both have good light transmittance, the electromagnetic film 1 and the capacitive screen 41 can both be located on the outer surface of the display screen 40.

[0092] Since the electromagnetic film 1 is connected between the capacitive screen 41 and the display screen 40 and located on the outer side of the display screen 40, it is not necessary to disassemble the bottom frame of the display screen, embed it into the bottom of the display screen, and the overall structure is simpler, which greatly reduces the assembly difficulty. In addition, the electromagnetic pen matched with the touch display device has a smaller distance from the electromagnetic film 1 during use, the electromagnetic induction amount is better, and the electromagnetic touch effect is better.

[0093] The capacitive screen 41 comprises a cover plate 410 and a capacitive sensor 3 connected to the cover plate 410; the cover plate 410 is bonded to the capacitive sensor 3 by optical adhesive 42.

[0094] Optionally, referring to FIG. 10, the capacitive sensor 3 comprises a third substrate 30 and a mesh layer 31 arranged on one side or both sides of the third substrate 30, the mesh layer 31 is made of ITO or metal (such as copper, silver or gold, etc.), and the change of the capacitance is sensed through the mesh layer 31.

[0095] Optionally, the cover plate 410 is made of transparent material, such as transparent glass, PMMA or composite plate; the display screen 40 is a liquid crystal display screen or an electronic ink screen, such as a cholesteric liquid crystal display screen or a total reflection liquid crystal display screen.

[0096] It can be understood that the electromagnetic film 1 can also be arranged at other positions, such as being arranged inside the display screen 40, and the capacitive screen 41 is arranged on the other side of the display screen 40.

[0097] Embodiment 6

[0098] As shown in FIG. 14, the present application provides an electromagnetic touch module, which comprises a flexible transparent touch film 50, a controller 51 and a data transmission module 52. The flexible transparent touch film 50 can be the electromagnetic film 1 described in the above embodiment 1, and its structure can be referred to the above, the flexible transparent touch film 50 is flexible and transparent, and the flexible transparent touch film 50 can also be a flexible and transparent electromagnetic film in the prior art.

[0099] Referring to FIG. 15, the flexible transparent touch film 50 is used to be separably arranged on the external writing substrate 6, since the flexible transparent touch film 50 is transparent and flexible, when it is arranged on the writing substrate 6, the writing substrate 6 can still be seen through the flexible transparent touch film 50, and thus the text, pattern or other content on the writing substrate 6 can be displayed. The writing substrate 6 can be a paper object such as a notebook, a textbook or a book, can also be an insulating hard board, and can also be a display screen or the like. In use, the operation such as answering questions, coloring or drawing can be performed according to the content displayed on the writing substrate 6.

[0100] The controller 51 is electrically connected with the flexible transparent touch film 50, and comprises an electromagnetic sensor driver 510 and a control chip 511, the electromagnetic sensor driver 510 can transmit the electric signal of the controller 51 to the electromagnetic sensor 11 after processing, so that the electromagnetic sensor 11 generates a magnetic field, the electromagnetic sensor 11 can sense the change of the magnetic field brought by the electromagnetic pen 2 and generate a sensing signal, the sensing signal is collected and processed by the electromagnetic sensor driver 510 and then transmitted to the control chip 511, and the control chip 511 can calculate the position and trajectory of the electromagnetic pen 2 according to the received sensing signal of the flexible transparent touch film 50.

[0101] The data transmission module 52 is electrically connected with the control chip 511, and is used for data transmission with an external device. The external device can be a mobile phone, a tablet computer, a notebook computer, a desktop computer, a display, a cloud server, or the like. Through the communication connection with the external device, the information written by the electromagnetic pen 2 can be transmitted to the external device, and then displayed or stored on the external device. Of course, the data transmission module 52 can also transmit the information of the external device to the electromagnetic touch module.

[0102] Since the flexible transparent touch film 50 is relatively independent, it can be covered on the writing substrate 6 or separated from the writing substrate 6, and then applied to other writing substrates 6 (for example, it can be covered on a notebook to do homework, or covered on a drawing book to draw, or covered on a display screen to write). Therefore, it can be used on various objects, has a wider range of use, and improves the versatility of the electromagnetic pen 2 for touch or writing. In addition, the data transmission module 52 of the flexible transparent touch film 50 can communicate with the external device. When the external device has a display screen, the writing content of the electromagnetic pen 2 on the flexible transparent touch film 50 can be displayed on the display screen in real time, realizing the original handwriting writing. Since the electromagnetic touch module does not need to have a display screen and the like, its cost is lower.

[0103] It should be noted that different bottom drawings can be placed below the relatively independent flexible transparent touch film 50, thereby realizing the function of drawing and copying. However, the traditional writing board and other electronic devices cannot realize the drawing and copying function on paper. In addition, since the flexible transparent touch film 50 is flexible, it can be easily lifted and removed from the writing substrate 6.

[0104] When it is needed to observe the content on the writing substrate 6 through the flexible transparent touch film 50, the better the light transmittance of the flexible transparent touch film 50 is, the better the observation effect is, and the better the use experience is. As described above, the line width of the first metal wire 1100 and the second metal wire 1110 is set to 1.0-5.0 μm, which is invisible to the naked eye, and the light transmittance of the flexible transparent touch film can be effectively improved. Further, the first metal wire 1100 and the second metal wire 1110 are set to have a line width of 2.0-4.0 μm, and the light transmittance of the flexible transparent touch film formed after wiring on the first substrate 10 can reach more than 88%.

[0105] The data transmission module 52 and the external entity device can be connected through a wired connection, or can be connected through a wireless connection, or can have the function of being connected through a wired connection and a wireless connection.

[0106] In some embodiments, as shown in FIG. 16 and FIG. 17, the data transmission module 52 comprises a data line 520, which is connected to the data interface of the external device. In this embodiment, the connection end of the data line 520 with the electromagnetic touch module is fixed and inseparable, and only the other end can be connected to the external device. The external end of the data line 520 is provided with a data connector, such as a USB plug or a type-c plug, etc., and the external device can be a mobile phone, a tablet computer, a notebook computer, or a desktop computer, etc. with a corresponding data interface.

[0107] In some embodiments, as shown in FIG. 16 and FIG. 18, the data transmission module 52 comprises a data interface 521 for connecting to the external device through a data line, which can be a USB interface or a type-c interface, etc. The external device is, for example, a mobile phone, a tablet computer, a notebook computer, or a desktop computer, etc. By connecting the data interface and the external device through the data line, data interaction can be achieved. Moreover, the data line is pluggable with the data transmission module 52, which can reduce the volume of the electromagnetic touch film group and facilitate storage.

[0108] In some embodiments, as shown in FIG. 7, the data transmission module 52 comprises a wireless transmission module 522 for wireless connection with the external device, which can be a Bluetooth module, a 4G module, or a wifi module, etc. The external device can be a mobile phone, a tablet computer, a notebook computer, a desktop computer, or a cloud server, etc. The data of the electromagnetic touch module can be directly transmitted to the cloud server, or uploaded to the cloud server through a mobile phone or a computer, etc.

[0109] It can be understood that the electromagnetic touch module can be provided with one or more of the data line 520, the data interface 521, and the wireless transmission module 522, and different means for data transmission can be selectively used.

[0110] As shown in FIG. 17 and FIG. 18, the electromagnetic touch module can comprise a housing 53, the controller 51 is arranged in the housing 53, and the data transmission module 52 is connected to the housing 53, for example, the data line 520 and the data interface 521 are arranged on the housing 53, and the wireless transmission module 522 is arranged in the housing 53. The housing 53 can be connected to the flexible transparent touch film 50, for example, fixed on one side of the flexible transparent touch film 50, or can be separately provided with the flexible transparent touch film 50 and connected through a cable.

[0111] The electromagnetic touch module can be powered by an external device or by a self-contained power supply, or can have both functions of being powered by an external device and by a self-contained power supply.

[0112] In some embodiments, as shown in FIG. 16, the electromagnetic touch module includes a power supply 54 for power supply, which can be a battery with energy storage function, for example, and the power supply can be supplied by the battery, and optionally, the battery is a rechargeable battery. The power supply can also be a plug that can be connected to the mains to power the electromagnetic touch module.

[0113] In some embodiments, the electromagnetic touch module is powered by an external device, for example, when it is connected to a mobile phone, tablet or computer, etc. through a data line 520, it can be powered through the data line 520.

[0114] It can be understood that when the electromagnetic touch module is applied to paper or insulating hardboard and the like, since the paper and insulating hardboard do not have the function of power supply, it is preferred that the electromagnetic touch module has a power supply 54, so that it can work normally without the help of external power supply. Of course, even if the electromagnetic touch module is applied to paper or insulating hardboard and the like, the electromagnetic touch module does not necessarily have a power supply, and it can still be connected to an external device (such as a mobile phone, a computer, a power bank, etc.) to use the power of the external device.

[0115] In some embodiments, as shown in FIGS. 19 and 20, the flexible transparent touch film 50 further includes a protective film 14 and / or a hardening coating 15, which can play a protective role, prevent water or other liquids from entering the inside of the flexible transparent touch film 50, and make the flexible transparent touch film 50 more resistant to bending and wear.

[0116] The protective film 14 or the hardening coating 15 can be provided on the surface of one side or both sides of the flexible transparent touch film 50. Optionally, at least the surface of the flexible transparent touch film 50 on the side facing the electromagnetic pen 2 is provided with the protective film 14 or the hardening coating 15 to reduce the wear of the flexible transparent touch film 50 when the electromagnetic pen 2 writes. Further optionally, the surfaces of both sides of the flexible transparent touch film 50 are provided with the protective film 14 or the hardening coating 15 to further improve the overall performance. It can be understood that on the surface of one side of the flexible transparent touch film 50, not only the protective film 14 or the hardening coating 15 can be provided, but also the protective film 14 and the hardening coating 15 can be provided at the same time, and the stacking order of the protective film 14 and the hardening coating 15 is not limited. FIG. 20 shows the case when the protective film 14 and the hardening coating 15 are provided on both sides of the flexible transparent touch film 50 at the same time.

[0117] The material of the protective film 14 can be, for example, a PET film, a PE film, a PI film, etc.; and the material of the hardening coating 15 can be, for example, a modified acrylic resin system coating liquid, a polyurethane system coating liquid, etc.

[0118] In some embodiments, as shown in FIGS. 21 and 22, the electromagnetic touch module further comprises a capacitive sensor 3 connected to the flexible transparent touch film 50, and the controller 51 is electrically connected to the capacitive sensor 3, and the controller 51 comprises a capacitive sensor driver 512 electrically connected to the control chip 511 to control the operation of the capacitive sensor 3. The capacitive sensor 3 can sense the change of the capacitance on the surface of the flexible transparent touch film 50, and when a finger touches the flexible transparent touch film 50, a capacitive signal can be generated to realize touch sensing of the finger. In this way, the flexible transparent touch film 50 has both electromagnetic induction and capacitive sensing functions.

[0119] The capacitive sensor 3 can be a separate layer connected to the surface of the flexible transparent touch film 50, for example, it comprises a third substrate 30 and a grid layer 31 (such as a metal grid layer or an ITO grid layer) for sensing a capacitive signal disposed on the third substrate 30, and is integrally attached to the flexible transparent touch film 50. The capacitive sensor 3 can also be integrated into the flexible transparent touch film 50. For example, the capacitive sensor 3 comprises a metal grid layer for sensing a capacitive signal, which is disposed on the surface of the first substrate 10. After the capacitive sensor 3 and the flexible transparent touch film 50 are connected, a magnetic and capacitive integrated film is formed, which can be referred to the description of the embodiment 4 above.

[0120] It can be understood that although the flexible transparent touch film 50 in FIG. 22 is provided with an electromagnetic sensor 11 only on one side of the first substrate 10, the first metal wire array 112 and the second metal wire array 113 can also be respectively provided on both sides of the first substrate 10 as shown in FIG. 9.

[0121] Optionally, as shown in FIGS. 17, 18 and 23, the electromagnetic touch module further comprises at least one of a key module 70, a camera 71, a microphone 72, a speaker 73 and a display module 74 electrically connected to the control chip 511.

[0122] For example, the electromagnetic touch module comprises the key module 70 electrically connected to the control chip 511, and the key module 70 includes but is not limited to a mechanical key, a capacitive sensing key or a pressure sensing key, etc. The key can be used to operate the capacitive touch module, such as turning on / off or adjusting the volume, etc.

[0123] For example, the electromagnetic touch module comprises the camera 71 electrically connected to the control chip 511, and the camera 71 can be used for functions such as taking pictures, recording videos, monitoring or face recognition, etc.

[0124] For example, the electromagnetic touch module comprises the microphone 72 electrically connected to the control chip 511, and the microphone 72 can be used for functions such as recording or voice interaction, etc.

[0125] For example, the electromagnetic touch module includes a speaker 73 electrically connected to the control chip 511, through which sound can be played, such as prompting the switch-on and switch-off, reading the content, playing the score of answering questions, etc.

[0126] For example, the electromagnetic touch module includes a display module 74 electrically connected to the control chip 511, through which relevant information can be displayed.

[0127] For example, the above-mentioned key module 70, camera 71, microphone 72, speaker 73 and display module 74, etc. can be installed on the shell 53.

[0128] Optionally, the electromagnetic touch module further includes a first electromagnetic shielding film 55 located below the flexible transparent touch film 50, which can prevent or reduce external electromagnetic interference, so that the flexible transparent touch film 50 is more sensitive and accurate in sensing the electromagnetic field of the electromagnetic pen 2.

[0129] In some embodiments, the first electromagnetic shielding film 55 is fixedly connected with the flexible transparent touch film 50, and the two are fixed with each other and inseparable, for example, the first electromagnetic shielding film 55 can be directly pasted at the bottom of the flexible transparent touch film 50 (see FIG. 24), or the first electromagnetic shielding film 55 is connected below other layers at the bottom of the flexible transparent touch film 50. Preferably, the first electromagnetic shielding film 55 has good light transmittance, so as to facilitate the display of the content on the writing substrate 6.

[0130] In some embodiments, the first electromagnetic shielding film 55 is separately arranged from the flexible transparent touch film 50, and when in use, the first electromagnetic shielding film 55 can be placed below the writing substrate 6 or between the writing substrate 6 and the flexible transparent touch film 50 as appropriate. For example, referring to FIG. 25, when the writing substrate 6 is a relatively thin paper or an insulating hard plate (such as a plastic plate or a glass plate or a composite plate, etc.), it can be placed below the writing substrate 6. When the writing substrate 6 is relatively thick or has electromagnetic devices inside, such as a display, it can be placed above the writing substrate 6 to reduce the interference of the electromagnetic devices inside the display and ensure the shielding effect.

[0131] As described above, the electromagnetic touch module has diversified use scenarios, which are introduced below to further embody its beneficial effects.

[0132] Use scenario one:

[0133] In this scenario, the writing substrate 6 can be a notebook, a textbook, a test paper, etc. The flexible transparent touch film 50 is covered on the writing substrate 6, and the electromagnetic pen 2 is used to write answers according to the questions on the writing substrate 6. The answers can be transmitted to external devices in the form of original handwriting, for example, transmitted to a cloud server (which can be directly transmitted to a cloud server or first transmitted to a mobile phone / computer, etc., and then transmitted to a cloud server), and the cloud server sends the answers to the teacher's / computer's or other devices of the parents, and then the answers can be corrected. Since it is in the form of original handwriting, it can prevent homework from being written by others.

[0134] Of course, the external device can be installed with AI software, which has a question bank and answers corresponding to the writing substrate 6, so as to realize AI automatic correction of homework, which can reduce the work of reading questions and correcting by teachers / parents. Further, AI can also be directly installed inside the electromagnetic touch module, and the homework can be automatically corrected by the internal AI software. At this time, there is no need to transmit data externally.

[0135] The results of the correction can be conveyed to the students through the speaker in the form of voice, or through the display module 74 in the form of vision.

[0136] The above scenario can realize the digitization of the traditional paper-based handwritten process.

[0137] Usage scenario two:

[0138] In this scenario, the writing substrate 6 is an insulating hard plate, such as a plastic plate, and the electromagnetic touch module is connected to an external device with a display screen through its data transmission module 52. The external device can be a mobile phone, a tablet, or a computer, etc.

[0139] When writing on the flexible transparent touch film 50, the content of the writing can be displayed in real time on the display screen of the external device, and the content of the writing can be stored and recorded by the external device.

[0140] The electromagnetic pen 2 can also control the cursor of the external device through the movement and clicking operations on the flexible transparent touch film 50, so that the electromagnetic touch module with the electromagnetic pen 2 can function like a mouse or a touchpad or a magic pad of a notebook computer.

[0141] Usage scenario three:

[0142] In this scenario, the writing substrate 6 is an external device with a display screen, and the display screen does not have a touch function. The external device can be a notebook computer or a desktop computer.

[0143] In use, the electromagnetic touch module is connected to an external device with a display screen through its data transmission module 52, and the flexible transparent touch film 50 is overlaid on the outside of the display screen. When the electromagnetic pen 2 contacts the flexible transparent touch film 50, the sensing signal of the electromagnetic sensor 11 is converted into an operation signal for the corresponding area of the display screen, such as clicking or sliding operation on a certain area, so that the display screen has a touch function.

[0144] It can be understood that when the electromagnetic touch module also has the capacitive sensor 3, the touch can be realized by a finger.

[0145] The above scenario realizes the touch operation on the display screen without a touch function through the electromagnetic touch module.

[0146] Embodiment 7

[0147] The application also provides a writing device, as shown in Fig. 26, which comprises the electromagnetic pen 2 and the electromagnetic touch module as described above.

[0148] The electromagnetic pen 2 can be an active electromagnetic pen or a passive electromagnetic pen. The flexible transparent touch film 50 further comprises a first electromagnetic power supply antenna 12 for supplying power to the passive electromagnetic pen. The first electromagnetic power supply antenna 12 is preferably located on the side of the flexible transparent touch film 50 facing the writing substrate 6. When the electromagnetic pen 2 is a passive electromagnetic pen, the flexible transparent touch film 50 can supply power to the passive electromagnetic pen through the first electromagnetic power supply antenna 12.

[0149] In some embodiments, the first electromagnetic power supply antenna 12 comprises a power supply coil or a plurality of power supply coils arranged concentrically. Optionally, as shown in Fig. 5, the coil is located at the edge area of the flexible transparent touch film 50, surrounding the outside of the electromagnetic sensor 11. When the first electromagnetic power supply antenna 12 works, it emits a magnetic field, and the electromagnetic pen 2 is electromagnetically induced with the magnetic field to generate an induced magnetic field, which can be sensed by the electromagnetic sensor 11.

[0150] It can be understood that when the flexible transparent touch film 50 is specially used with an active electromagnetic pen, the first electromagnetic power supply antenna 12 can not be provided.

[0151] The first electromagnetic power supply antenna 12 is electrically connected with the electromagnetic sensor driver 510, and the control signal of the control chip 511 is output to the first electromagnetic power supply antenna 12 after being processed by the electromagnetic sensor driver 510, so that the first electromagnetic power supply antenna 12 generates a magnetic field under the control of the control chip 511.

[0152] It can be understood that when the electromagnetic pen 2 is specially applied in a device provided with an electromagnetic power supply antenna, the flexible transparent touch film 50 can also not be provided with an electromagnetic power supply antenna, but use the electromagnetic power supply antenna in the device to supply power to the electromagnetic pen 2.

[0153] It can be understood that, no matter whether the active electromagnetic pen or the passive electromagnetic pen is used, the first electromagnetic power supply antenna 12 can be arranged in the flexible transparent touch film 50, and the first electromagnetic power supply antenna 12 can not work when the active electromagnetic pen is used.

[0154] Embodiment 8

[0155] The application further provides an electronic device, as shown in Fig. 27, which comprises a display screen 40 and an electromagnetic touch module or a writing device as described above.

[0156] The display screen 40 can be a liquid crystal screen (for example, a cholesteric liquid crystal screen) or an ink screen.

[0157] The flexible transparent touch film 50 is attached to the outer surface of the display screen 40 and is in communication connection with the display screen 40 through the data transmission module 52. When the electromagnetic pen 2 is used to write on the surface of the flexible transparent touch film 50, the traces of writing can appear in real time on the display screen 40 at the position corresponding to the tip of the electromagnetic pen 2.

[0158] The electronic device further comprises a second electromagnetic shielding film 80 and / or a second electromagnetic power supply antenna 81 located below the display screen 40. The second electromagnetic shielding film 80 is used to shield the electromagnetic elements below the display screen 40 from interfering with the magnetic field signal, so as to improve the accuracy of signal detection. The second electromagnetic power supply antenna 81 is used to supply power to the passive electromagnetic pen 2. The structure and position of the second electromagnetic power supply antenna 81 can refer to the first electromagnetic power supply antenna 12, which also comprises a power supply coil surrounding the outside of the electromagnetic sensor 11, that is, when viewed in the direction perpendicular to the surface (the first surface 10a or the second surface 10b) of the flexible transparent touch film 50, the power supply coil of the second electromagnetic power supply antenna 81 surrounds the outside of the first metal wire array 112 and the second metal wire array 113.

[0159] It can be understood that, when the electronic device has the second electromagnetic shielding film 80, the electromagnetic touch module can not have the first electromagnetic shielding film 55. When the electronic device has the second electromagnetic power supply antenna 81, the electromagnetic touch module can not have the first electromagnetic power supply antenna 12, of course, it can also have, and when it has, the first electromagnetic power supply antenna 12 or the second electromagnetic power supply antenna 81 can be selectively used for power supply.

[0160] It should be noted that, in the absence of conflicts, the embodiments herein can be combined with each other, thereby obtaining more implementation solutions. The above is only a specific implementation of the application, and any improvement made on the basis of the concept of the application is considered to be within the protection scope of the application.

Claims

1. An electromagnetic film, characterized by, The electromagnetic film comprises: a first substrate (10) made of an insulating material and comprising a first surface (10a) and a second surface (10b) arranged oppositely; a plurality of first receiving coils (110) arranged on the first surface (10a), the plurality of first receiving coils (110) being arranged in parallel along a first arrangement direction X, and each of the first receiving coils (110) comprising two first metal wires (1100) arranged in parallel along the first arrangement direction X; and a plurality of second receiving coils (111) arranged on the second surface (10b), the plurality of second receiving coils (111) being arranged in parallel along a second arrangement direction Y, and each of the second receiving coils (111) comprising two second metal wires (1110) arranged in parallel along the second arrangement direction Y; the projections of the first metal wires (1100) and the second metal wires (1110) on the first surface (10a) or the second surface (10b) are arranged crosswise.

2. The electromagnetic film of claim 1, wherein, The angle between the projections of the first metal wires (1100) and the second metal wires (1110) on the first surface (10a) or the second surface (10b) is 45-135°.

3. The electromagnetic film of claim 1, wherein, Two adjacent first receiving coils (110) are arranged spacedly without crossing each other. Two adjacent second receiving coils (111) are arranged spacedly without crossing each other.

4. The electromagnetic film of claim 1, wherein, The electromagnetic film is transparent, and the line width of the first metal wires (1100) and the second metal wires (1110) is 1.0-5.0 um.

5. The electromagnetic film of claim 4, wherein, The line width of the first metal wires (1100) and the second metal wires (1110) is 2.0-4.0 um.

6. The electromagnetic film of claim 4, wherein, The distance between two adjacent first metal wires (1100) is 200-800 um. The distance between two adjacent second metal wires (1110) is 200-800 um.

7. The electromagnetic film of claim 1, wherein, The electromagnetic film further comprises a first electromagnetic energy supply antenna (12), the first surface (10a) and / or the second surface (10b) of the first substrate (10) is provided with the first electromagnetic energy supply antenna (12), a plurality of the first metal wires (1100) form a first metal wire array (112), a plurality of the second metal wires (1110) form a second metal wire array (113), and the first electromagnetic energy supply antenna (12) comprises an energy supply coil surrounding the outside of the first metal wire array (112) and the second metal wire array (113).

8. The electromagnetic film of claim 1, wherein, The electromagnetic film further comprises a second substrate (13) and a first electromagnetic energy supply antenna (12) arranged on the surface of the second substrate (13), a plurality of the first metal wires (1100) form a first metal wire array (112), a plurality of the second metal wires (1110) form a second metal wire array (113), and the first electromagnetic energy supply antenna (12) comprises an energy supply coil surrounding the outside of the first metal wire array (112) and the second metal wire array (113).

9. The electromagnetic film of claim 1, wherein, The first substrate (10) is made of transparent material, and the first substrate (10) is one of PET film, PC film, PI film, COP film, COC film, PEN film, TAC film, PC / PMMA composite film, soda-lime glass or aluminum-silicon glass.

10. The electromagnetic film of claim 9, wherein, The thickness of the first substrate (10) is 10-100 um.

11. The electromagnetic film according to any of claims 2 to 10, wherein The electromagnetic film is provided with a protective film (14) and / or a hardening coating (15) on one side or both sides.

12. A magnetic and capacitive integrated film, characterized by The electromagnetic film (1) according to any one of claims 1-11 is used in a capacitive sensor (3).

13. The magnetic and capacitive integrated film according to claim 12, wherein The capacitive sensor (3) comprises a metal mesh layer arranged on the first surface (10a) and / or the second surface (10b). The capacitive sensor (3) is attached to the electromagnetic film (1), and the capacitive sensor (3) comprises a third substrate (30) and a mesh layer (31) arranged on one side or both sides of the third substrate (30), and the mesh layer (31) is made of ITO or metal.

14. A touch display device, comprising: The electromagnetic film (1) according to any one of claims 1-13 is used in a capacitive sensor (3). 15.The touch display device of claim 14, wherein, The electromagnetic film (1) is transparent, and the electromagnetic film (1) is arranged on the outer surface of the display screen (40). The touch display device further comprises a display screen (40) and a transparent capacitive screen (41) connected to the electromagnetic film (1), and the electromagnetic film (1) is connected between the capacitive screen (41) and the display screen (40); and the electromagnetic film (1) is bonded to the capacitive screen (41) and the display screen (40) by optical adhesive respectively. 16.The touch display device of claim 15, wherein, The capacitive screen (41) comprises a cover plate (410) and a capacitive sensor (3) connected to the cover plate (410); and the cover plate (410) is bonded to the capacitive sensor (3) by optical adhesive (42). 17.The touch display device of claim 16, wherein, The cover plate (410) is transparent glass, PMMA or composite plate. The capacitive sensor (3) comprises a third substrate (30) and a mesh layer (31) arranged on one side or both sides of the third substrate (30), and the mesh layer (31) is made of ITO or metal. The display screen (40) is a liquid crystal display screen or an electronic ink screen.

18. An electromagnetic touch module, comprising: The electromagnetic film (1) according to any one of claims 1-11 is used in a flexible transparent touch film (50) for separable covering on an external writing substrate (6). A controller (51) is electrically connected to the flexible transparent touch film (50) and comprises an electromagnetic sensor driver (510) and a control chip (511); and A data transmission module (52) is electrically connected to the control chip (511) and is used for data transmission with an external device. The data transmission module (52) comprises a data line (520) for connection with the external device; and / or 19.The electromagnetic touch module of claim 18, wherein, The data transmission module (52) comprises a data interface (521) for connection with the external device through the data line. The electromagnetic touch module comprises a power supply (54) for power supply or is powered by an external power supply. ​ 20.The electromagnetic touch module of claim 18, wherein, The data transmission module (52) comprises a wireless transmission module (522) for wireless connection with an external device; The electromagnetic touch module further comprises a power supply (54) for power supply.

21. The electromagnetic touch module of any of claims 18 to 20, wherein, The electromagnetic touch module further comprises at least one of a key module (70), a camera (71), a microphone (72), a loudspeaker (73) and a display module (74) electrically connected with the control chip (511).

22. The electromagnetic touch module of any of claims 18 to 20, wherein, The writing substrate (6) is paper, insulating hard board or display screen. The external device is a mobile phone, a tablet computer, a notebook computer, a desktop computer or a cloud server. The electromagnetic touch module further comprises a first electromagnetic shielding film (55) located below the flexible transparent touch film (50); 23. The electromagnetic touch module of any of claims 18 to 20, wherein, The first electromagnetic shielding film (55) is adhered to the flexible transparent touch film (50); or, The first electromagnetic shielding film (55) is separately arranged from the flexible transparent touch film (50), and in use, the first electromagnetic shielding film (55) is placed below the writing substrate (6), or between the writing substrate (6) and the flexible transparent touch film (50). The electromagnetic touch module comprises an electromagnetic pen (2) and the electromagnetic touch module according to any one of claims 18 to 23.

24. A writing device, characterized by The electromagnetic pen (2) is an active electromagnetic pen; or, 25. The writing instrument of claim 24, wherein the cap is formed of a material that is transparent to the light. The electromagnetic pen (2) is a passive electromagnetic pen, and the flexible transparent touch film (50) further comprises a first electromagnetic power supply antenna (12) for power supply of the electromagnetic pen (2), the first electromagnetic power supply antenna (12) is electrically connected with the electromagnetic sensor driver (510), and comprises a power supply coil surrounding an outer portion of the electromagnetic sensor (101). The electromagnetic touch module comprises a display screen (40) and the electromagnetic touch module according to any one of claims 18 to 23 or the writing device according to claim 24 or 25.

26. An electronic device, comprising: The flexible transparent touch film (50) is attached to an outer surface of the display screen (40), and is in communication connection with the display screen (40) through the data transmission module (52). The electronic device comprises a second electromagnetic shielding film (80) and / or a second electromagnetic power supply antenna (81) located below the display screen (40), and the second electromagnetic power supply antenna (81) comprises a power supply coil surrounding an outer portion of the electromagnetic sensor (101).

27. The electronic device of claim 26, wherein, ​

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