Capacitive touch film, touch module and display screen

Abstract

The invention discloses a capacitive touch film, a touch module and a display screen. The capacitive touch film comprises a first substrate layer, a plurality of first electrodes, a plurality of second electrodes, a plurality of first leads and a plurality of second leads, the first electrode and the second electrode are arranged on the same side or different sides of the first substrate layer, the first lead is connected with the first electrode, the second lead is connected with the second electrode, and the projection of the first lead on the first substrate layer and the projection of the second lead on the first substrate layer are partially overlapped. The projection of the first lead on the first base material layer and the projection of the second lead on the first base material layer are partially overlapped, so that when the capacitive touch film is carried on a display screen, the frame width occupied by the first lead and the second lead when the first lead and the second lead are led out from the frame in parallel can be reduced, and the attractiveness of the display screen is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a capacitive touch film, a touch module and a display screen. Background Art

[0002] With the advancement of technology, people have higher and higher requirements for the quality and aesthetics of electronic products. Existing display screens are usually required to have a larger display area and a smaller frame area. Since the frame around the display device has no display effect and the existence of the frame also affects the visual aesthetics, manufacturers are committed to producing display screens with smaller frame.

[0003] When an existing display screen is equipped with a touch module, the capacitive touch film of the touch module is usually composed of two conductive layers, one layer as a transmitter (Transmit, TX) and the other layer as a receiver (Receive, RX). Each conductive layer will lead out each signal channel through a lead, and the lead will eventually connect to the control circuit through a circuit board. However, when the leads of the conductive layer are centrally led out from both sides of the capacitive touch film, a certain frame area will be occupied. When the size of the display screen is larger, the more signal channels there are, and the leads on both sides of the capacitive touch film need to occupy a large amount of frame area, which is not conducive to improving the aesthetics of the display screen. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a capacitive touch film, a touch module and a display screen.

[0005] To solve the above problems, the present application provides a first technical solution: a capacitive touch film is provided, comprising a first substrate layer, a plurality of first electrodes, a plurality of second electrodes, a plurality of first leads and a plurality of second leads; the first substrate layer comprises a first surface and a second surface arranged opposite to each other; the first electrode is arranged on one side of the first surface, and the second electrode is arranged on one side of the second surface, or, the plurality of first electrodes and the second electrodes are arranged in parallel on the first surface or the second surface of the first substrate layer; the first lead is connected to the first electrode, and the second lead is connected to the second electrode; wherein the projection of the first lead on the first substrate layer partially overlaps with the projection of the second lead on the first substrate layer.

[0006] Optionally, the capacitive touch film also includes a routing assembly, the first lead includes a first sub-lead and a second sub-lead that are electrically connected, the second sub-lead and the second lead are located on one side of the second surface of the first substrate layer, the first sub-lead is located on one side of the first surface of the first substrate layer, and the routing assembly is arranged on one side of the second surface of the first substrate layer and is used to mount the second sub-lead.

[0007] Optionally, the capacitive touch film further includes a first connector, which connects the first sub-lead and the second sub-lead respectively, one end of the first connector is located on the first surface side of the first substrate layer, and the other end of the first connector is located on the second surface side of the first substrate layer.

[0008] Optionally, a plurality of first electrodes are arranged along a first direction on the first substrate layer, and a plurality of second electrodes are arranged along a second direction on the first substrate layer, and the first direction is perpendicular to the second direction;

[0009] The first sub-leads include at least a first group of first sub-leads and a second group of first sub-leads, the first group of first sub-leads are connected to the first electrode at one end in the first direction of the first substrate layer and extend along the second direction, the second group of first sub-leads are connected to the first electrode at the other end in the first direction of the first substrate layer and extend along the second direction, and the second sub-leads are located on a side of the routing component away from the first substrate layer and extend along the first direction of the first substrate layer.

[0010] Optionally, the routing assembly includes a first routing board and a second routing board, the second sub-leads include at least a first group of second sub-leads and a second group of second sub-leads, the first routing board and the second routing board are arranged on one side of the second surface of the first substrate layer, the first group of second sub-leads are connected to the first group of first sub-leads, the first routing board is used to mount the first group of second sub-leads, the second group of second sub-leads are connected to the second group of first sub-leads, and the second routing board is used to mount the second group of second sub-leads.

[0011] Optionally, the capacitive touch film further includes a shielding layer, which is disposed between the second sub-lead and the first substrate layer, and is used to reduce electrical interference between the second sub-lead and the second lead.

[0012] Optionally, the capacitive touch film further includes an adhesive layer, which is disposed between the wiring assembly and the first substrate layer, and is used to fix the wiring assembly to the first substrate layer.

[0013] Optionally, the first electrode is arranged on the first surface of the first substrate layer, the second electrode is arranged on the first surface of the first substrate layer, the second sub-lead and the second lead are arranged on the second surface of the first substrate layer, and the first sub-lead is arranged on the first surface of the first substrate layer.

[0014] Optionally, the capacitive touch film also includes a second substrate layer, the second substrate layer is arranged between the second electrode and the routing assembly, the first electrode is arranged on the first surface of the first substrate layer, the second electrode is arranged on the side of the second substrate layer close to the first substrate layer, the second lead is arranged on the side of the second substrate layer close to the first substrate layer, the routing assembly is arranged on the side of the second substrate layer away from the first substrate layer, and the first sub-lead is arranged on the first surface of the first substrate layer.

[0015] To solve the above problems, the present application provides a second technical solution: a touch module is provided, comprising a glass substrate, a capacitive touch film as described in any of the above items, and a control circuit; the capacitive touch film is arranged on the glass substrate; the control circuit is used to connect to the capacitive touch film to receive the capacitance signal of the capacitive touch film.

[0016] Optionally, the capacitive touch film also includes a first connector and a routing assembly, the first lead includes a first sub-lead and a second sub-lead, the first connector connects the first sub-lead and the second sub-lead respectively, and the routing assembly is used to mount the second sub-lead; the routing assembly is provided with a first bonding area and a second bonding area at both ends along the first direction respectively, the first bonding area is used to realize the connection between the first connector and the second sub-lead, and the second bonding area is used to realize the connection between the second sub-lead and the control circuit.

[0017] To solve the above problems, the present application provides a third technical solution: a display screen is provided, comprising a touch module and a frame as above; the frame is arranged around the touch module to accommodate a first lead and a second lead, wherein the projection of the first lead on the frame partially overlaps with the projection of the second lead on the frame.

[0018] Different from the prior art, the capacitive touch film provided by the present application includes a first substrate layer, a plurality of first electrodes, a plurality of second electrodes, a plurality of first leads and a plurality of second leads; the first electrode and the second electrode are arranged on the same side or different sides of the first substrate layer, the first lead is connected to the first electrode, the second lead is connected to the second electrode, and the projection of the first lead on the first substrate layer partially overlaps with the projection of the second lead on the first substrate layer. The projection of the first lead on the first substrate layer of the present application partially overlaps with the projection of the second lead on the first substrate layer, so that when the capacitive touch film is mounted on a display screen, the frame width occupied by the first lead and the second lead when they are led out in parallel in the frame can be reduced, thereby improving the aesthetics of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 is a structural schematic diagram of an embodiment of a capacitive touch film in the prior art;

[0021] Figure 2 is a structural schematic diagram of another embodiment of a capacitive touch film in the prior art;

[0022] Figure 3is a structural schematic diagram of a first embodiment of a capacitive touch film provided by the present application;

[0023] Figure 4 is a structural schematic diagram of a second embodiment of the capacitive touch film provided by the present application;

[0024] Figure 5 is a structural schematic diagram of a third embodiment of a capacitive touch film provided by the present application;

[0025] Figure 6 is a structural schematic diagram of a fourth embodiment of a capacitive touch film provided by the present application;

[0026] Figure 7 is a structural schematic diagram of a fifth embodiment of the capacitive touch film provided by the present application;

[0027] Figure 8 is a structural schematic diagram of a first embodiment of a wiring assembly provided by the present application;

[0028] Fig. 9 is a structural schematic diagram of a sixth embodiment of a capacitive touch film provided by the present application;

[0029] Fig.10 is a structural schematic diagram of an embodiment of a touch module provided by the present application;

[0030] Fig.11 It is a structural schematic diagram of the second embodiment of the routing component provided by the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] See also Figure 1-2 , Figure 1 is a schematic structural diagram of an embodiment of a capacitive touch film in the prior art, Figure 2 FIG. 1 is a schematic diagram of the structure of another embodiment of the capacitive touch film of the prior art. Figure 1 and Figure 2 As shown, the existing capacitive touch film generally includes a first electrode 21, a first substrate layer 20 and a second electrode 23. The first electrode 21 can be one of the emitter and the receiver, and the second electrode 23 can be the other of the emitter and the receiver. Figure 1 As shown, the capacitive touch film further includes a first lead 22 and a second lead 24, the first lead 22 is used to lead out the emitter, the second lead 24 is used to lead out the receiver, and the control circuit is used to connect the first lead 22 and the second lead 24 to receive the electrical signals of the first electrode 21 and the second electrode 23. The first lead 22 is led out from the two side edges of the emitter respectively and is routed around the electrode area until it reaches the bonding area 33 below the electrode area and is centrally led out together with the second lead 24. Therefore, the required width of the lower side lead of the capacitive touch film in the prior art is the width of the parallel routing of the first lead 22 and the second lead 24, so that when the size of the display screen becomes larger and the number of signal channels becomes more, the width of the lower frame of the display screen becomes larger, which affects the aesthetics of the display screen.

[0035] In view of this, an embodiment of the present application proposes a capacitive touch film, which is used to be mounted on a touch module. The touch module can be combined with a display module to construct a display screen, which can realize touch control and display functions. The projection of the first lead 22 of the capacitive touch film on the first substrate layer 20 partially overlaps with the projection of the second lead 24 on the first substrate layer 20 to reduce the border width of the display screen and improve the aesthetics of the display screen.

[0036] See also Figure 3-6 , Figure 3 is a schematic structural diagram of a first embodiment of a capacitive touch film provided by the present application, Figure 4 is a structural schematic diagram of a second embodiment of the capacitive touch film provided by the present application, Figure 5 is a schematic structural diagram of a third embodiment of a capacitive touch film provided in the present application, Figure 6 FIG. 1 is a schematic structural diagram of a fourth embodiment of a capacitive touch film provided by the present application. Figure 3-Figure 6 As shown, the capacitive touch film 10 of the present embodiment includes a first substrate layer 20 , a plurality of first electrodes 21 , a plurality of second electrodes 23 , a plurality of first lead lines 22 and a plurality of second lead lines 24 .

[0037] The first substrate layer 20 is used to carry a plurality of first electrodes 21 and a plurality of second electrodes 23. The first substrate layer 20 includes a first surface and a second surface that are disposed opposite to each other. The plurality of first electrodes 21 are disposed on one side of the first surface, and the plurality of second electrodes 23 are disposed on one side of the second surface. Figure 6 As shown, a transverse matrix of the first electrodes 21 and a longitudinal matrix of the second electrodes 23 can be fabricated on the first surface and the second surface of the first substrate layer 20, respectively; or, a longitudinal matrix of the first electrodes 21 and a transverse matrix of the second electrodes 23 can be fabricated on the first surface and the second surface of the first substrate layer 20, respectively; or, as shown Figure 3 As shown, the capacitive touch film 10 also includes a second substrate layer 434, an electrode matrix of the first electrodes 21 is made on the first surface of the first substrate layer 20, and an electrode matrix of the second electrodes 23 is made on the second substrate layer 434, and the second substrate layer 434 including the second electrodes 23 is adhered to the second surface of the first substrate layer 20 by optical glue, so that the first electrodes 21 and the second electrodes 23 are respectively located on opposite sides of the first substrate layer 20, so as to form a touch sensing area composed of a plurality of first electrodes 21 and second electrodes 23 on the capacitive touch film 10.

[0038] The first electrode 21 and the second electrode 23 represent two electrodes of a capacitor, respectively. The first electrode 21 may be one of an emitter and a receiver, and the second electrode 23 may be the other of an emitter and a receiver, so as to form a stable capacitor between the first electrode 21 and the second electrode 23. When a finger or a capacitive pen is used to touch the touch sensing area of ​​the capacitive touch film 10, the finger or the capacitive pen will form a capacitor and change the capacitance between the first electrode 21 and the second electrode 23, so as to generate a capacitive signal corresponding to the touch sensing area.

[0039] Specifically, the first lead 22 is connected to the first electrode 21, and the second lead 24 is connected to the second electrode 23. In one embodiment, a plurality of first electrodes 21 constitute a transverse matrix, and a plurality of second electrodes 23 constitute a longitudinal matrix. The first lead 22 is respectively connected to the plurality of first electrodes 21 from both sides of the transverse matrix, and the second lead 24 is connected to the plurality of second electrodes 23 from the bottom of the longitudinal matrix. Since the control circuit of the display screen is usually located in the lower frame area, the first lead 22 is led out from both sides of the transverse matrix and arranged around the frame area of ​​the transverse matrix and partially overlaps with the position of the second lead 24 until it converges at the control circuit of the display screen and is connected to the control circuit, that is, the projection of the first lead 22 on the first substrate layer 20 partially overlaps with the projection of the second lead 24 on the first substrate layer 20.

[0040] In the embodiment of the present application, the projection of the first lead 22 of the capacitive touch film 10 on the first substrate layer 20 partially overlaps with the projection of the second lead 24 on the first substrate layer 20, so that when the capacitive touch film 10 is mounted on a display screen, the width of the frame occupied by the first lead 22 and the second lead 24 when they are led out in parallel in the frame can be reduced, thereby improving the aesthetics of the display screen.

[0041] Optionally, the capacitive touch film 10 further includes a routing component 26, the first lead 22 includes an electrically connected first sub-lead 221 and a second sub-lead 222, the second sub-lead 222 and the second lead 24 are located on one side of the second surface of the first substrate layer 20, and the first sub-lead 221 is located on one side of the first surface of the first substrate layer 20. Specifically, in one embodiment, the second sub-lead 222 and the second lead 24 may be located on the second surface of the first substrate layer 20, and the first sub-lead 221 is located on the first surface of the first substrate layer 20, that is, the second sub-lead 222 and the second lead 24 are directly attached to the second surface; in another embodiment, the second sub-lead 222 and the second lead 24 are located on a side of the second surface away from the first surface, and attached to the second surface through other components, which is not specifically limited here.

[0042] When the second sub-lead 222 and the second lead 24 are located on the side of the second surface away from the first surface, the routing component 26 is arranged on the side of the second surface of the first substrate layer 20, and the second sub-lead 222 is mounted on the side of the routing component 26 away from the first sub-lead 221 and the second lead 24, so that the first sub-lead 221 and the second sub-lead 222 are respectively located on the opposite sides of the routing component 26.

[0043] Depend on Figure 5As shown, a plurality of first electrodes 21 form a transverse matrix, a plurality of second electrodes 23 form a longitudinal matrix, and the matrix of the first electrodes 21 and the second electrodes 23 are arranged crosswise to form an electrode array. The first lead 22 is used to lead out the first electrodes 21 from both sides in the length direction of the capacitive touch film 10, and the second lead 24 is used to lead out the second electrode 23 below the width direction of the capacitive touch film 10. Further, the first lead 22 includes a first sub-lead 221 and a second sub-lead 222, the first sub-lead 221 is used to lead out the first electrode 21 and extend along the width direction of the first substrate layer 20, the wiring assembly 26 is arranged on the second surface of the first substrate layer 20 and corresponds to the position of the second lead 24, the wiring assembly 26 is used to mount the second sub-lead 222, and the second sub-lead 222 extends along the length direction on the wiring assembly 26 so that the second sub-lead 222 overlaps with the projection of the second lead 24 on the first substrate layer 20.

[0044] Furthermore, since the second sub-leads 222 extend along the length direction on the routing component 26, the width of the routing component 26 is slightly larger than the side-by-side width of a plurality of second sub-leads 222, and the routing component 26 can be configured as an elongated plate-shaped component, and a conductive circuit should be provided on the side of the routing component 26 facing away from the first substrate layer 20 to facilitate routing of the second sub-leads 222. In some embodiments, the material of the routing component 26 can be the same as that of the first substrate layer 20, or the routing component 26 can be made of a flexible circuit board or a printed circuit board, which can be selected according to the production effect and cost of the display screen, and is not specifically limited here.

[0045] In the embodiment of the present application, the first lead 22 includes an electrically connected first sub-lead 221 and a second sub-lead 222. The first sub-lead 221 and the second lead 24 are located on one side of the first surface of the first substrate layer 20, and the second sub-lead 222 is located on the second surface of the first substrate layer 20. The routing component 26 is arranged on the second surface of the first substrate layer 20. The routing component 26 is used to mount the second sub-lead 222 so that the second sub-lead 222 overlaps with the projection of the second lead 24 on the first substrate layer 20, thereby reducing the frame width occupied by the second sub-lead 222 and the second lead 24 when they are led out in parallel in the frame, thereby improving the aesthetics of the display screen.

[0046] Optionally, in one embodiment, Figure 5As shown, a plurality of first electrodes 21 are arranged along a first direction on the first substrate layer 20, and a plurality of second electrodes 23 are arranged along a second direction on the first substrate layer 20, and the first direction is perpendicular to the second direction. The first direction is the above-mentioned lateral arrangement direction, and the second direction is the above-mentioned longitudinal arrangement direction, that is, the first direction is the length direction of the capacitive touch film 10, and the second direction is the width direction of the capacitive touch film 10. Alternatively, when the capacitive touch film 10 is mounted on a display screen, the horizontal direction when the user faces the display screen is the length direction, that is, the first direction, and the vertical direction when the user faces the display screen is the width direction, that is, the second direction, and the first direction and the second direction are perpendicular.

[0047] The first sub-lead 221 includes at least a first group of first sub-leads 221 and a second group of first sub-leads 221. The first group of first sub-leads 221 are connected to one end of the first electrode 21 in the first direction of the first substrate layer 20 and extend along the second direction. The second group of first sub-leads 221 are connected to the other end of the first electrode 21 in the first direction of the first substrate layer 20 and extend along the second direction. The second sub-leads 222 are located on the side of the routing component 26 away from the first substrate layer 20 and extend along the first direction of the first substrate layer 20. Specifically, in an optional embodiment, since a plurality of first electrodes 21 form a plurality of transverse matrices along the first direction, the first group of first sub-leads 221 are connected to one end of the first electrode 21, and a portion of the first group of first sub-leads 221 connected to the first electrode 21 needs to extend along the first direction and turn on the side of the first electrode 21 away from the second group of first sub-leads 221 to extend along the second direction; in the same transverse matrix, the second group of first sub-leads 221 are connected to the other end of the first electrode 21, and a portion of the second group of first sub-leads 221 connected to the first electrode 21 needs to extend along the first direction and turn on the side of the first electrode 21 away from the first group of first sub-leads 221 to extend along the second direction.

[0048] In the embodiment of the present application, the first group of first sub-leads 221 and the second group of first sub-leads 221 are respectively led out from the two ends of the transverse matrix of the first electrode 21 and extend along the second direction. Compared with concentrated lead-out at one end of the transverse matrix of the first electrode 21, leading the first sub-leads 221 respectively from the two ends of the transverse matrix of the first electrode 21 along the first direction can reduce the width of the single-side frame and further improve the aesthetics of the display screen.

[0049] Furthermore, if Figure 4 As shown, the routing assembly 26 includes a first routing board 261 and a second routing board 262 , and the second sub-leads 222 include at least a first group of second sub-leads 222 and a second group of second sub-leads 222 .

[0050] The first wiring board 261 and the second wiring board 262 are arranged on one side of the first substrate layer 20 close to the second surface, the first group of second sub-leads 222 are connected to the first group of first sub-leads 221, the first wiring board 261 is used to mount the first group of second sub-leads 222, the second group of second sub-leads 222 are connected to the second group of first sub-leads 221, the second group of second sub-leads 222 are connected to the second group of first sub-leads 221, and the second wiring board 262 is used to mount the second group of second sub-leads 222.

[0051] It can be understood that in this embodiment, the first wiring board 261 and the second wiring board 262 are symmetrically arranged along the perpendicular midline of the first substrate layer 20, the first group of first sub-leads 221 and the second group of sub-leads are symmetrically arranged along the perpendicular midline of the first substrate layer 20, and the first group of second sub-leads 222 and the second group of second sub-leads 222 are symmetrically arranged along the perpendicular midline of the first substrate layer 20, so as to lead out the first electrodes 21 in sequence from both ends of the transverse matrix of the first electrodes 21. The lead arrangement of the capacitive touch film 10 of this embodiment is regular, which is conducive to further improving the aesthetics of the display screen.

[0052] Alternatively, in another embodiment, see Figure 7 , Figure 7 is a schematic structural diagram of the fifth embodiment of the capacitive touch film provided by the present application. Figure 7 As shown, the first sub-lead 221 is connected to the first electrode 21 at one end of the first substrate layer 20 in the first direction and extends along the second direction of the first substrate layer 20, and the second sub-lead 222 is attached to the routing component 26 and extends along the length direction of the first substrate layer 20 to achieve the lead-out of the first electrode 21. It can be understood that when the display screen has fewer signal channels, the capacitive touch film 10 of this embodiment only has the first sub-lead 221 disposed at any one end of the first substrate layer 20 in the first direction to reduce material costs and improve the practicality of the capacitive touch film 10.

[0053] Optionally, see Figure 8 , Figure 8 Schematic diagram of the structure of the first embodiment of the wiring assembly provided by the present application. Figure 8 As shown, the capacitive touch film 10 further includes a shielding layer 41 , which is disposed between the second sub-lead 222 and the first substrate layer 20 , and is used to reduce electrical interference between the second sub-lead 222 and the second lead 24 .

[0054] Specifically, since the routing component 26 is arranged on the second surface of the first substrate layer 20 along the first direction, the projections of the second sub-lead 222 and the second lead 24 on the first substrate layer 20 mostly overlap, which may cause capacitive coupling between the second sub-lead 222 and the second lead 24. In the capacitive touch film 10 of this embodiment, a shielding layer 41 is arranged between the routing component 26 and the first substrate layer 20, wherein the shielding layer 41 can be a functional material with insulating properties to reduce the electrical interference between the second sub-lead 222 and the second lead 24, thereby improving the electromagnetic stability of the capacitive touch film 10.

[0055] Alternatively, if Figure 8 As shown, the capacitive touch film 10 further includes an adhesive layer 42 . The adhesive layer 42 is disposed between the wiring assembly 26 and the first substrate layer 20 . The adhesive layer 42 is used to fix the wiring assembly 26 to the first substrate layer 20 .

[0056] The adhesive layer 42 is arranged between the routing component 26 and the first substrate layer 20. Specifically, the adhesive layer 42 can be located between the shielding layer 41 and the first substrate layer 20. The adhesive layer 42 is used to fix the routing component 26 to the side of the first substrate layer 20 close to the first lead 22 and the second lead 24, thereby realizing the connection between the routing component 26 and the first substrate layer 20 and improving the stability of the routing component 26.

[0057] In one embodiment, see Fig. 9 , Fig. 9 1 is a schematic diagram of the structure of the sixth embodiment of the capacitive touch film provided by the present application. Fig. 9 As shown, the present application also proposes a capacitive touch film 10, which includes a first substrate layer 20, a plurality of first electrodes 21, a plurality of second electrodes 23, a plurality of first leads 22, and a plurality of second leads 24; the plurality of first electrodes 21 and the second electrodes 23 are arranged in parallel on the same side of the first substrate layer 20, for example, the plurality of first electrodes 21 and the second electrodes 23 are arranged in parallel on the first surface or the second surface of the first substrate layer 20. The first lead 22 is connected to the first electrode 21, and the second lead 24 is connected to the second electrode 23; wherein the projection of the first lead 22 on the first substrate layer 20 partially overlaps with the projection of the second lead 24 on the first substrate layer 20.

[0058] Optionally, the first electrode 21 is disposed on the first surface of the first substrate layer 20 , and the second electrode 23 is disposed on the first surface of the first substrate layer 20 . The first electrode 21 and the second electrode 23 may be sequentially connected by a bridge.

[0059] Specifically, a plurality of first electrodes 21 form a transverse matrix, a plurality of second electrodes 23 form a longitudinal matrix, adjacent first electrodes 21 are sequentially connected by bridging, adjacent second electrodes 23 are also connected by bridging, and the first electrodes 21 and the second electrodes 23 are arranged in a staggered manner in the transverse and longitudinal directions to form an electrode array and a touch sensing area formed by the plurality of first electrodes 21 and the second electrodes 23. It can be understood that, compared with the capacitive touch film 10 of the first embodiment, the transverse matrix and the longitudinal matrix of the capacitive touch film 10 of this embodiment are arranged on one side of the same surface of the first substrate layer 20, and the first sub-leads 221 for connecting to the first electrodes 21 and the second leads 24 for connecting to the second electrodes 23 are led out on the same plane to reduce the number of layers of the capacitive touch film 10.

[0060] Similarly, the first lead 22 is connected to the first electrode 21, and the first lead 22 includes a first sub-lead 221 and a second sub-lead 222. The second sub-lead 222 and the second lead 24 are arranged on the second surface of the first substrate layer 20. The first sub-lead 221 is arranged on the first surface of the first substrate layer 20. The second lead 24 is connected to the second electrode 23. The two sides of the horizontal matrix are respectively connected to a plurality of first electrodes 21. The second lead 24 leads out a plurality of second electrodes 23 from the bottom of the vertical matrix. The specific arrangement and position of the first lead 22 and the second lead 24, and the method of realizing the overlapping of the projection parts of the first lead 22 and the second lead 24 on the first substrate layer 20 through the routing component 26 are similar to the above-mentioned embodiments and will not be repeated here.

[0061] In one embodiment, if Figure 3 As shown, the capacitive touch film 10 also includes a second substrate layer 434, the second substrate layer 434 is arranged between the second electrode 23 and the wiring component 26, the first electrode 21 is arranged on the first surface of the first substrate layer 20, the second electrode 23 is arranged on the side of the second substrate layer 434 close to the first substrate layer 20, the second lead 24 is arranged on the side of the second substrate layer 434 close to the first substrate layer 20, the wiring component 26 is arranged on the side of the second substrate layer 434 away from the first substrate layer 20, and the first sub-lead 221 is arranged on the first surface of the first substrate layer 20.

[0062] Specifically, the capacitive touch film 10 of the present embodiment also includes a second optical adhesive layer 432. The capacitive touch film 10 of the present embodiment arranges the second electrode 23 on the side of the second substrate layer 434 close to the first substrate layer 20, and the first electrode 21 is arranged on the first surface of the first substrate layer 20, and the second electrode 23 is adhered to the second surface of the first substrate layer 20 through the second optical adhesive layer 432, so that the capacitive touch film 10 can separately manufacture the electrode arrays of the first electrode 21 and the second electrode 23 during the production process. At this time, the second substrate layer 434 is located on the outer side of the second electrode 23 away from the first substrate layer 20 to protect the second electrode 23.

[0063] For further information, see Fig.10 , Fig.10 FIG. 1 is a schematic diagram of the structure of an embodiment of the touch module of the present application. Fig.10 As shown, the present application also proposes a touch module, which is formed by disposing a capacitive touch film 10 of any of the above embodiments on a glass substrate 11 and connecting the capacitive touch film 10 to a control circuit 25 to receive a capacitance signal of the capacitive touch film 10 .

[0064] Alternatively, if Figure 3 and Figure 6 As shown, the capacitive touch film 10 further includes a first optical adhesive layer 431 and a third substrate layer 435. Specifically, as Figure 3 As shown, the first optical adhesive layer 431 is located between the first electrode 21 and the first substrate layer 20, and the third substrate layer 435 is disposed on the wiring assembly 26. The touch module of this embodiment adheres the capacitive touch film 10 to the glass substrate 11 through the first optical adhesive layer 431 to achieve the connection between the capacitive touch film 10 and the glass substrate 11. The third substrate layer 435 is disposed on the wiring assembly 26 and is used as a substrate for the wiring assembly 26 to carry the second sub-lead 222, so that the second sub-lead 222 is routed on the third substrate layer 435 and forms a circuit layer.

[0065] Optionally, see Fig.11 , Fig.11 is a schematic diagram of the structure of the second embodiment of the wiring assembly provided by the present application. Fig.11 As shown, the routing component 26 is provided with a first bonding area 331 and a second bonding area 332 at both ends along the first direction, respectively. The first bonding area 331 is used to realize the connection between the first connector 31 and the second sub-lead 222, and the second bonding area 332 is used to realize the connection between the second sub-lead 222 and the control circuit 25. The first connector 31 is used to connect the first sub-lead 221 and the second sub-lead 222.

[0066] Specifically, the routing component 26 is respectively provided with a first bonding area 331 and a second bonding area 332 at both ends along the first direction. The routing component 26 may also include a first connector 31, and the first connector 31 is used to connect the first sub-lead 221 and the second sub-lead 222. Since the first sub-lead 221 and the second sub-lead 222 are respectively located on two opposite surfaces of the first substrate layer 20, the first connector 31 needs to be bent on the side in the thickness direction of the first substrate layer 20 when connecting the first sub-lead 221 and the second sub-lead 222, so that a part of the first connector 31 is located on the first surface of the first substrate layer 20, and a part of the first connector 31 is located in the first bonding area 331 of the routing component 26. The first bonding area 331 is used to achieve relative fixation and connection between the first connector 31 and the second sub-lead 222.

[0067] Further, a portion of the second sub-lead 222 extends along the first direction of the first substrate layer 20 on the wiring assembly 26. When the capacitive touch film 10 is mounted on the touch module, another portion of the second sub-lead 222 is introduced into the control circuit 25 after line bonding in the second bonding area 332 on the wiring assembly 26, so that the control circuit 25 obtains the capacitance signal of the first electrode 21 and performs touch control. In an optional embodiment, the first connector 31 is a material with good bending performance, for example, the first connector 31 can be a flexible printed circuit (FPC), and the first connector 31 can realize the circuit connection between the first sub-lead 221 and the second sub-lead 222 by bonding.

[0068] The present application also proposes a display screen, which includes the above touch module and a frame. The frame is arranged around the touch module, and the frame is used to accommodate the first lead 22 and the second lead 24, wherein the projection of the first lead 22 on the frame partially overlaps with the projection of the second lead 24 on the frame.

[0069] The display screen may also include a support assembly (not shown) for supporting the touch module, the support assembly includes a fixed bracket and a bracket base, the fixed bracket is usually arranged below the touch module, and the fixed bracket is also provided with a routing channel (not shown), the first sub-lead 221 leads out the first electrode 21 and is connected to the second sub-lead 222 through the routing assembly 26, the second sub-lead 222 is routed to the routing channel at one end connected to the second bonding area 332, and the second lead 24 leads out the second electrode 23 and is routed to the routing channel; the bracket base is used to be relatively fixed to the fixed bracket through a connector to fix the touch module on the bracket base. A third bonding area (not shown) is provided at the connection between the fixed bracket and the touch module, and the third bonding area is used to bond the second lead 24 to the control circuit 25, so that the second lead 24 transmits the electrical signal of the second electrode 23 to the control circuit 25.

[0070] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A capacitive touch film, characterized in that: include: A first substrate layer comprises a first surface and a second surface disposed opposite to each other; A plurality of first electrodes and a second electrode, wherein the first electrode is disposed on one side of the first surface, and the second electrode is disposed on one side of the second surface, or the plurality of the first electrodes and the second electrodes are disposed in parallel on the first surface or the second surface of the first substrate layer; A plurality of first leads and second leads, wherein the first leads are connected to the first electrodes, and the second leads are connected to the second electrodes; The projection of the first lead on the first substrate layer partially overlaps with the projection of the second lead on the first substrate layer.

2. The capacitive touch film according to claim 1, characterized in that: The capacitive touch film also includes a routing assembly, the first lead includes a first sub-lead and a second sub-lead that are electrically connected, the second sub-lead and the second lead are located on one side of the second surface of the first substrate layer, the first sub-lead is located on one side of the first surface of the first substrate layer, and the routing assembly is arranged on one side of the second surface of the first substrate layer and is used to mount the second sub-lead.

3. The capacitive touch film according to claim 2, characterized in that: The capacitive touch film also includes a first connector, which connects the first sub-lead and the second sub-lead respectively, one end of the first connector is located on the first surface side of the first substrate layer, and the other end of the first connector is located on the second surface side of the first substrate layer.

4. The capacitive touch film according to claim 2, characterized in that: A plurality of the first electrodes are arranged along a first direction on the first substrate layer, and a plurality of the second electrodes are arranged along a second direction on the first substrate layer, wherein the first direction is perpendicular to the second direction; The first sub-leads include at least a first group of the first sub-leads and a second group of the first sub-leads, the first group of the first sub-leads being connected to one end of the first electrode in the first direction of the first substrate layer and extending along the second direction, the second group of the first sub-leads being connected to the other end of the first electrode in the first direction of the first substrate layer and extending along the second direction, and the second sub-leads being located on a side of the routing component away from the first substrate layer and extending along the first direction of the first substrate layer.

5. The capacitive touch film according to claim 4, characterized in that: The routing assembly includes a first routing board and a second routing board, the second sub-leads include at least a first group of the second sub-leads and a second group of the second sub-leads, the first routing board and the second routing board are arranged on one side of the second surface of the first substrate layer, the first group of the second sub-leads are connected to the first group of the first sub-leads, the first routing board is used to mount the first group of the second sub-leads, the second group of the second sub-leads are connected to the second group of the first sub-leads, and the second routing board is used to mount the second group of the second sub-leads.

6. The capacitive touch film according to claim 2, characterized in that: The capacitive touch film further includes a shielding layer, which is disposed between the second sub-lead and the first substrate layer, and is used to reduce electrical interference between the second sub-lead and the second lead.

7. The capacitive touch film according to claim 2, characterized in that: The capacitive touch film further includes an adhesive layer, which is disposed between the wiring assembly and the first substrate layer, and is used to fix the wiring assembly to the first substrate layer.

8. The capacitive touch film according to claims 4-7, characterized in that: The first electrode is arranged on the first surface of the first substrate layer, the second electrode is arranged on the first surface of the first substrate layer, the second sub-lead and the second lead are arranged on the second surface of the first substrate layer, and the first sub-lead is arranged on the first surface of the first substrate layer.

9. The capacitive touch film according to claims 4-7, characterized in that: The capacitive touch film also includes a second substrate layer, which is arranged between the second electrode and the wiring component, the first electrode is arranged on the first surface of the first substrate layer, the second electrode is arranged on the side of the second substrate layer close to the first substrate layer, the second lead is arranged on the side of the second substrate layer close to the first substrate layer, the wiring component is arranged on the side of the second substrate layer away from the first substrate layer, and the first sub-lead is arranged on the first surface of the first substrate layer.

10. A touch module, characterized in that: include: Glass substrate; The capacitive touch film according to any one of claims 1 to 9, disposed on the glass substrate; The control circuit is used to be connected to the capacitive touch film to receive the capacitance signal of the capacitive touch film.

11. The touch module according to claim 10, characterized in that: The capacitive touch film further includes a first connector and a wiring assembly, the first lead includes a first sub-lead and a second sub-lead, the first connector connects the first sub-lead and the second sub-lead respectively, and the wiring assembly is used to mount the second sub-lead; The routing component is provided with a first bonding area and a second bonding area at two ends along the first direction, respectively. The first bonding area is used to realize the connection between the first connector and the second sub-lead, and the second bonding area is used to realize the connection between the second sub-lead and the control circuit.

12. A display screen, characterized in that: include: The touch module as described in claims 10-11; A frame is arranged around the touch module and is used to accommodate the first lead and the second lead, wherein a projection of the first lead on the frame partially overlaps with a projection of the second lead on the frame.

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