Flexible touch screen and electronic equipment

Abstract

The invention discloses a flexible touch screen and electronic equipment, the flexible touch screen comprises a flexible display layer and a touch layer, the touch layer is arranged on the flexible display layer, and the touch layer comprises a touch electrode and a touch chip electrically connected with the touch electrode; the touch electrode comprises a plurality of first sub-electrodes and a plurality of second sub-electrodes, each first sub-electrode extends along a first direction, each second sub-electrode extends along a second direction, each second sub-electrode and the plurality of first sub-electrodes are crossed and insulated, and the first direction and the second direction are crossed; the first sub-electrode and / or the second sub-electrode are / is provided with fractures, so that the first sub-electrode and / or the second sub-electrode are / is divided into a plurality of electrode sections, the electrode sections extend in the first direction and / or the second direction, and the electrode sections are continuously conducted in the first direction and / or the second direction. According to the flexible touch screen and the electronic equipment, the impedance value and stray capacitance of the touch electrodes can be reduced, and then the touch performance can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of flexible touch screens, and in particular to a flexible touch screen and an electronic device. Background Art

[0002] In the field of display technology, touch panels, as a new input device, have been widely used in touch display screens. Furthermore, with the development of flexible display technology, electronic devices such as mobile phones, smart watches, and smart bracelets are trending towards being thinner, lighter, and more flexible. Consequently, touch screens used in electronic devices are increasingly demanding flexibility, meaning thinness and bendability.

[0003] Electronic devices with flexible screens offer both large screen sizes and high portability. However, these larger screens often require larger touch electrodes, which in turn have larger areas. This results in higher impedance and larger parasitic capacitance, making touch signals difficult to detect and affecting touch performance. Summary of the Invention

[0004] Based on this, the embodiments of the present application provide a flexible touch screen and an electronic device, which can reduce the impedance value and parasitic capacitance of the touch electrodes, thereby improving the touch performance of the flexible touch screen.

[0005] In a first aspect, the present application provides a flexible touch screen, comprising:

[0006] a flexible display layer; and

[0007] a touch layer, provided on the flexible display layer, the touch layer comprising touch electrodes and a touch chip located on one side of the touch electrodes, the touch chip being electrically connected to the touch electrodes;

[0008] The touch electrodes include a plurality of first sub-electrodes and a plurality of second sub-electrodes, each of the first sub-electrodes extends along a first direction, each of the second sub-electrodes extends along a second direction, and each of the second sub-electrodes crosses and is insulated from the plurality of first sub-electrodes, and the first direction and the second direction are cross-arranged;

[0009] The first sub-electrode has a break to divide the first sub-electrode into multiple electrode segments, the electrode segments extend along the first direction, and the electrode segments are continuously conductive along the first direction, and / or the second sub-electrode has a break to divide the second sub-electrode into multiple electrode segments, the electrode segments extend along the second direction, and the electrode segments are continuously conductive along the second direction.

[0010] In a second aspect, the present application provides an electronic device having the flexible touch screen as described in the first aspect above.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The flexible touch screen and electronic device provided in the embodiments of the present application have a break in the first sub-electrode and / or the second sub-electrode of the touch electrode, that is, the touch electrode that should have been provided at a certain position of the flexible display layer is removed. In this way, the area of ​​the touch electrode can be reduced, thereby reducing the impedance value of the touch electrode, and also reducing the parasitic capacitance between the touch electrode and the cathode in the flexible display layer, so that the touch signal can be more easily detected, thereby improving the sensitivity during touch and improving the touch effect of the flexible touch screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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 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.

[0014] Figure 1 This is a schematic structural diagram of the electronic device disclosed in an embodiment of the present application in an unfolded state;

[0015] Figure 2 A schematic diagram of the structure of the electronic device disclosed in an embodiment of the present application when in a folded state;

[0016] Figure 3 This is a schematic structural diagram of the flexible touch screen disclosed in an embodiment of the present application when in an unfolded state;

[0017] Figure 4 This is a structural diagram of the flexible touch screen disclosed in an embodiment of the present application when in a folded state;

[0018] Figure 5 This is a schematic structural diagram of the flexible touch screen disclosed in an embodiment of the present application when in a rolled-up state;

[0019] Figure 6 This is a schematic diagram of a first planar structure of the flexible touch screen disclosed in an embodiment of the present application when the flexible touch screen is a foldable screen and is in an unfolded state;

[0020] Figure 7 yes Figure 6 A local enlarged view of point A in FIG;

[0021] Figure 8This is a schematic diagram of a second planar structure of the flexible touch screen disclosed in an embodiment of the present application when it is a foldable screen and is in an unfolded state;

[0022] Figure 9 yes Figure 8 A local enlarged view of point B in FIG;

[0023] Figure 10 This is a schematic diagram of a second planar structure of the flexible touch screen disclosed in an embodiment of the present application when it is a foldable screen and is in an unfolded state;

[0024] Figure 11 yes Figure 10 A local enlarged view of C1 in FIG;

[0025] Figure 12 yes Figure 10 A local enlarged view of D1 in FIG;

[0026] Figure 13 This is a schematic diagram of a third planar structure of the flexible touch screen disclosed in an embodiment of the present application when it is a foldable screen and is in an unfolded state;

[0027] Figure 14 yes Figure 13 A local enlarged view of C2 in FIG;

[0028] Figure 15 yes Figure 13 A local enlarged view of D2 in FIG;

[0029] Figure 16 This is a schematic diagram of a first planar structure of the flexible touch screen disclosed in an embodiment of the present application when the flexible touch screen is a scroll screen and is in an unfolded state;

[0030] Figure 17 yes Figure 16 A local enlarged view of point E in FIG;

[0031] Figure 18 This is a schematic diagram of a second planar structure of the flexible touch screen disclosed in an embodiment of the present application when the flexible touch screen is a scroll screen and is in an unfolded state;

[0032] Figure 19 yes Figure 18 A local enlarged view of point F in FIG.

[0033] Figure 20 yes Figure 18 A local enlarged view of point G in the figure.

[0034] Description of main reference numerals

[0035] 100-Electronic equipment;

[0036] 10- Equipment housing;

[0037] 20-Flexible touch screen; 21-Flexible display layer; 211-Bending area; 211a-First bending area; 211b-Second bending area; 212-Non-bending area; 212a-First non-bending area; 212b-Second non-bending area; 212c-Third non-bending area; 213-First edge; 214-Second edge; 215a-First metal trace; 215b-Second metal trace; 215c-Third metal trace; 215d-Fourth metal trace; 22-Touch layer; 22a-Touch electrode; 22b-Touch core 221 - first sub-electrode; 222 - second sub-electrode; 2221 - electrode segment; 2221a - first electrode segment; 2221b - second electrode segment; 2221c - middle electrode segment; 223 - break; 223a - middle break; 224 - digital chip; 224a - data register; 224b - digital signal processor; 224c - microprocessor; 225 - analog chip; 225a - first analog chip; 225b - second analog chip; 225c - third analog chip; 226 - timing control circuit;

[0038] f1-first direction; f2-second direction; O1-first axis. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0041] It will be appreciated that the terms "first," "second," and the like used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are used solely to distinguish a first element from another element. For example, a first sub-electrode may be referred to as a second sub-electrode, and similarly, a second sub-electrode may be referred to as a first sub-electrode, without departing from the scope of this application. Both the first sub-electrode and the second sub-electrode are touch electrodes, but they are not the same touch electrode.

[0042] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected circuits, modules, units, etc.

[0043] As used herein, the singular forms "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include," "comprising," "having," and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Furthermore, the term "and / or" as used in this specification includes any and all combinations of the relevant listed items.

[0044] See also Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of an electronic device in this application from a side perspective in one implementation. Figure 2 This is a structural diagram of the electronic device of the present application from a side perspective in another implementation method. An embodiment of the present application provides an electronic device, which electronic device 100 can achieve folding and bending effects, and includes a device housing 10 and a flexible touch screen 20, and the flexible touch screen 20 is fixed on the device housing 10. Among them, the flexible touch screen 20 is used to realize the touch sensing, detection and screen display functions of the electronic device 100 of the present application. The device housing 10 is used to support, fix and protect the flexible touch screen 20, so that the flexible touch screen 20 fixed on the device housing 10 can normally realize its touch detection and sensing functions.

[0045] At the same time, the device housing 10 can also secure and protect the flexible touch screen 20 and other electronic components or structures disposed within the device housing 10 under external forces, such as drops, bumps, and collisions. It can also seal the flexible touch screen 20 and other electronic components or structures disposed within the device housing 10 to prevent external impurities such as moisture and dust from corroding the electronic components or structures disposed within the device housing 10.

[0046] It should be noted that in the implementation of this application, the electronic device 100 is only described as a mobile phone, and the electronic device 100 is not limited to a mobile phone. In other implementations of this application, the electronic device 100 may also be a tablet computer, a television, a laptop computer, a smart wearable device (e.g., a smart watch, a smart bracelet, etc.), or other electronic products with touch display functions, and this application does not make specific limitations on this.

[0047] The flexible touch screen 20 provided in the embodiment of the present application can be bent, and thus can be folded or rolled up, thereby realizing the folding or rolling design of the electronic device 100 while realizing the normal functions of the electronic device 100, thereby improving the user experience when using the electronic device 100 of the present application and improving the portability of the electronic device 100 of the present application.

[0048] See also Figure 3 and Figure 4 , which shows an exemplary flexible touch screen 20 in an unfolded state provided by an embodiment of the present application, Figure 4 It shows an exemplary flexible touch screen 20 in a folded state provided by an embodiment of the present application. The flexible touch screen 20 provided by an embodiment of the present application can be a folding screen, that is, the flexible touch screen 20 can be folded, so that it can be unfolded (such as Figure 3 The flexible touch screen 20 is in the state shown) and the folded state (as shown Figure 4 The flexible touch screen 20 is switched between the states shown in FIG.

[0049] When the flexible touch screen 20 is in Figure 4 In the folded state shown, the folding angle of the flexible touch screen 20 can be understood as approximately 0°, and when the flexible touch screen 20 is in Figure 3 In the unfolded state shown, the folding angle of the flexible touch screen 20 can be understood to be approximately 180°. It should be noted that when the flexible touch screen 20 is in the folded state, the folding angle of the flexible touch screen 20 can be any angle other than 0° as described above, such as 10°, 20°, 30°, 40°, 45°, 50°, 60°, 70°, 75°, 90°, 100°, 105°, 120°, 135°, 140°, 150°, 160°, 170°, or 175°.

[0050] See also Figure 3 and Figure 5 , Figure 5 It shows an exemplary flexible touch screen 20 in a rolled-up state provided by an embodiment of the present application. The flexible touch screen 20 can be a roll-up screen, that is, a portion of the flexible touch screen 20 can be rolled up, so that it can be unfolded in an unfolded state (such as Figure 3 The flexible touch screen 20 is in the state shown) and the rolled state (as shown Figure 5 The flexible touch screen 20 is switched between the states shown in FIG.

[0051] Because the flexible touch screen 20 can have different states, such as an unfolded state and a folded state, or an unfolded state and a rolled state, when the flexible touch screen 20 is in the unfolded state, the flexible touch screen 20 can have a larger screen size, which is convenient for display and touch, and when the flexible touch screen 20 is in the folded state, the overall volume of the flexible touch screen 20 is relatively small, which is easy to carry.

[0052] The flexible touch screen 20 provided in the embodiment of the present application includes a flexible display layer 21 and a touch layer 22 arranged on the flexible display layer 21, wherein the flexible display layer 21 is used to realize functions such as screen display of the electronic device 100; when the flexible touch screen 20 is folded or rolled up, the flexible display layer 21 can be folded or rolled up along with the bending of the flexible touch screen 20, so as to form a bending effect while realizing the functions of screen display or operation interface display of the flexible touch screen 20.

[0053] The flexible display layer 21 has a bending region 211, so that the flexible display layer 21 can be folded or rolled up as the flexible touch screen 20 bends, thereby achieving a bending effect while realizing the image display function or operation interface display function of the flexible touch screen 20. It should be noted that the flexible display layer 21 in this application can be a liquid crystal display layer, an organic electroluminescent display layer, a quantum dot electroluminescent display layer, or other display layer that can be used to realize the image display function of the flexible touch screen 20, and the implementation method of this application does not specifically limit this.

[0054] The touch layer 22 cooperates with the flexible display layer 21 to realize the touch sensing, detection and screen display functions of the flexible touch screen 20, so that the electronic device 100 can receive external input instructions or output feedback information to the outside world, so as to form a human-computer interaction effect between the electronic device 100 and the user (that is, the operator of the electronic device 100). Then, the user can realize human-computer interaction by touching the flexible touch screen 20, that is, when in use, the user can operate the interface by gently touching the icons or text on the flexible touch screen 20 with his fingers. This can make human-computer interaction more straightforward and greatly facilitate users.

[0055] The flexible touch screen 20 may be a self-capacitive touch screen, a mutual-capacitive touch screen, or a touch screen of another structure. In the implementation of this application, the flexible touch screen 20 is described as a mutual-capacitive touch screen as an example, but the structure of the flexible touch screen 20 in this application is not limited to this. In other embodiments of this application, the flexible touch screen 20 may also be other touch screens capable of achieving touch sensing and detection effects.

[0056] See also Figure 6The touch layer 22 includes a touch electrode 22a and a touch chip 22b located on one side of the touch electrode 22a. The touch chip 22b is electrically connected to the touch electrode 22a. The touch electrode 22a includes a plurality of first sub-electrodes 221 and a plurality of second sub-electrodes 222. Each first sub-electrode 221 extends along a first direction f1, and the plurality of first sub-electrodes 221 are continuously conductive along the first direction f1. Each second sub-electrode 222 extends along a second direction f2, and the plurality of second sub-electrodes 222 are continuously conductive along the second direction f2. Each second sub-electrode 222 is cross-arranged with multiple first sub-electrodes 221, and each second sub-electrode 222 is insulated from multiple first sub-electrodes 221, that is, all second sub-electrodes 222 are insulated from the first sub-electrodes 221, and each first sub-electrode 221 and each second sub-electrode 222 are electrically connected to the touch chip 22b, so that in actual application, the touch chip 22b can detect the change in the node capacitance value at the intersection of the first sub-electrode 221 and the second sub-electrode 222 to detect the position touched by the finger.

[0057] The first direction f1 and the second direction f2 are arranged to intersect each other. For example, the first direction f1 and the second direction f2 may be perpendicular to each other. For example, Figure 6 As shown, the first direction f1 may be the y-axis direction in the plane coordinate system, that is, the vertical direction; and the second direction f2 may be the x-axis direction in the plane coordinate system, that is, the horizontal direction.

[0058] In the present application, the first sub-electrode 221 is one of the driving electrode (abbreviated as: Tx) and the sensing electrode (abbreviated as: Rx), and the second sub-electrode 222 is the other of the driving electrode and the sensing electrode, that is, when the first sub-electrode 221 is Tx, the second sub-electrode 222 is Rx, and when the first sub-electrode 221 is Rx, the second sub-electrode 222 is Tx. Moreover, each Tx can be applied with a touch drive signal and generate an electric field line that can be received by Rx, so as to form a coupling capacitor between any Tx and an adjacent Rx. It can be understood that a Tx and an Rx forming a coupling capacitor are respectively constructed as the two poles of the coupling capacitor.

[0059] When a finger touches the flexible touch screen 20, it changes the coupling capacitance between the two electrodes (i.e., Tx and Rx) near the touch point. This changes the capacitance between the two electrodes, causing the sensing signal received by Rx to change, such as a decrease in the electric field lines received by Rx. The touch chip 22b obtains the values ​​of the coupling capacitances based on Rx and calculates the location of the touch point based on the detected coupling capacitance changes, thereby enabling the touch sensing and detection functions of the flexible touch screen 20.

[0060] In some embodiments of the present application, the shapes of the first sub-electrode 221 and the second sub-electrode 222 can both be diamond-shaped. Figure 6 The illustrated implementations only use one possible implementation of the first sub-electrode 221 and the second sub-electrode 222 as an example to illustrate the first sub-electrode 221 and the second sub-electrode 222, and do not limit the actual structural shape and dimensions of the first sub-electrode 221 and the second sub-electrode 222. That is, in actual design requirements for the first sub-electrode 221 and the second sub-electrode 222, the structural shape and dimensions of the first sub-electrode 221 and the second sub-electrode 222 can be adjusted based on actual design needs. For example, the first sub-electrode 221 and the second sub-electrode 222 can be designed as a bar shape, and this application does not impose specific limitations on this.

[0061] For example, the first sub-electrode 221 and the second sub-electrode 222 can both be made of a metal mesh (full name: Metal Mesh; abbreviated as MM). Figure 6 The mesh markings in the subsequent figures are only used to distinguish the first sub-electrode 221 from the second sub-electrode 222, and are not used to show the specific shape of the metal grid. In actual applications, the metal grid can be a grid structure formed by intersecting metal lines, which can avoid blocking the pixels in the flexible display layer 21.

[0062] See also Figure 6 and Figure 7 The first sub-electrode 221 has a break 223 to divide the first sub-electrode 221 into multiple electrode segments 2221, each electrode segment 2221 extends along the second direction f2 and is continuously conductive along the first direction f1, and each electrode segment 2221 is electrically connected to the touch chip 22b to ensure normal touch detection, and / or the second sub-electrode 222 has a break 223 to divide the second sub-electrode 222 into multiple electrode segments 2221, each electrode segment 2221 extends along the second direction f2 and is continuously conductive along the second direction f2, and each electrode segment 2221 is electrically connected to the touch chip 22b to ensure normal touch detection.

[0063] By providing a break 223 on the first sub-electrode 221 and / or the second sub-electrode 222, that is, removing the touch electrode 22a originally provided at a certain position of the flexible display layer 21, the area of ​​the touch electrode 22a can be reduced, thereby reducing the impedance value of the touch electrode 22a, and also reducing the parasitic capacitance between the touch electrode 22a and the cathode in the flexible display layer 21, so that the touch signal can be more easily detected, thereby improving the detection accuracy of the flexible touch screen 20 and improving the touch effect of the flexible touch screen 20.

[0064] See also Figure 6 The bending area 211 of the flexible display layer 21 in the present application has a first axis O1, wherein the first axis O1 can be parallel to the first direction f1, and in this case, the first axis O1 is also perpendicular to the second direction f2. It can be understood that the foldable flexible touch screen 20 can be folded along the first axis O1, so that the flexible display layer 21 can switch between the unfolded state and the folded state, and in this case, the first axis O1 can be regarded as the bending center axis of the bending area 211. It should be noted that Figure 6 The position, structure, and size of the bending zone 211 and the bending center axis of the flexible display layer 21 are merely illustrative and do not represent the actual position, structure, and size of the bending zone 211 and the bending center axis when the flexible display layer 21 is bent. In other words, the actual position, structure, and size of the bending zone 211 and the bending center axis during the bending process of the flexible display layer 21 can be adjusted according to actual needs.

[0065] Typically, when the flexible display layer 21 is in the unfolded state, the dimension of the flexible display layer 21 in the second direction f2 is greater than or equal to its dimension in the first direction f1. The flexible display layer 21 can be folded along a first axis O1 parallel to the first direction f1. This allows the flexible touch screen 20 to have a larger screen when unfolded while having a smaller volume when folded, making it more portable. Furthermore, folding along the first axis O1 parallel to the first direction f1 allows the flexible display layer 21 to form multiple square display areas after folding, rather than multiple long strips of display areas. This allows the display areas to display a complete image even when the flexible display layer 21 is folded, making it easier to view the image presented in the display areas.

[0066] Optionally, the shape of the flexible display layer 21 in the unfolded state can be rectangular, oval, square, or circular, etc. Of course, in other embodiments, the shape of the flexible display layer 21 in the unfolded state can also be other shapes, such as a waist shape. The shape of the flexible display layer 21 in the unfolded state can be determined according to actual conditions and is not specifically limited in this application.

[0067] When the flexible display layer 21 is rectangular in the unfolded state, the first direction f1 is the width direction of the flexible display layer 21 in the unfolded state, and the second direction f2 is the length direction of the flexible display layer 21 in the unfolded state. When the flexible display layer 21 is elliptical in the unfolded state, the first direction f1 is the long axis direction of the flexible display layer 21 in the unfolded state, and the second direction f2 is the short axis direction of the flexible display layer 21 in the unfolded state.

[0068] In the present application, a break 223 is preferably provided in the second sub-electrode 222. Because the flexible display layer 21 has a larger dimension in the second direction f2 than in the first direction f1, and in the present application, the first sub-electrode 221 extends along the first direction f1, while the second sub-electrode 222 extends along the second direction f2, the length of the second sub-electrode 222 in the second direction f2 is generally greater than the length of the first sub-electrode 221 in the first direction f1. Consequently, the area of ​​the second sub-electrode 222 is generally larger than the area of ​​the first sub-electrode 221. Therefore, the present application preferably provides a break 223 in the second sub-electrode 222 to more specifically reduce the impedance of the touch electrode 22a and the parasitic capacitance between the touch electrode 22a and the cathode in the flexible display layer 21, thereby making touch signals more easily detectable. This, in turn, improves the detection accuracy and touch performance of the flexible touch screen 20.

[0069] In some embodiments, each second sub-electrode 222 has a break 223. This can further reduce the area of ​​the second sub-electrode 222, further reduce the impedance of the second sub-electrode 222, and reduce the parasitic capacitance between the second sub-electrode 222 and the cathode in the flexible display layer 21, thereby making it easier to detect touch signals, thereby further improving the detection accuracy of the flexible touch screen 20 and further enhancing the touch effect of the flexible touch screen 20.

[0070] See also Figure 8 and Figure 9 In addition to the bending area 211, the flexible display layer 21 also has multiple non-bending areas 212. The non-bending areas 212 and the bending areas 211 are alternately arranged along the second direction f2, and each bending area 211 is located between two adjacent non-bending areas 212. In this way, when the flexible display layer 21 is in the unfolded state, the bending areas 211 and the non-bending areas 212 can be arranged roughly coplanar, so that the flexible display layer 21 has a larger display area for easy viewing and touching; and when the flexible display layer 21 switches from the unfolded state to the folded state, the bending areas 211 bend so that the non-bending areas 212 are close to each other, or the non-bending areas 212 are folded together to reduce the volume of the flexible display layer 21, thereby reducing the volume of the electronic device 100, and making it easier to carry the electronic device 100.

[0071] Among them, the fracture 223 can be located in the bending area 211, that is, at least part of the second sub-electrode 222 that should have been set in the bending area 211 is removed. This not only reduces the area of ​​the second sub-electrode 222, so as to reduce the impedance value and parasitic capacitance of the touch electrode 22a, and thus improves the touch performance of the flexible touch screen 20; at the same time, during the bending process, due to the existence of the fracture 223, the stress can be better released, thereby achieving the effect of dispersing the stress generated when the flexible touch screen 20 is bent, and avoiding the stress generated by the bending to damage the second sub-electrode 222 located in the bending area 211, thereby ensuring that the touch performance of the flexible display layer 21 is not affected.

[0072] It should be noted that the number of the bending areas 211 can be adjusted. Figure 8 The flexible display layer 21 is illustrated by taking one bending area 211 as an example. In other implementations of the present application, the number of bending areas 211 can be multiple, such as two, three, etc., that is, the flexible touch screen 20 can also achieve double-folding, triple-folding and other effects.

[0073] Furthermore, in some optional embodiments, as Figure 8 and Figure 9 The bending area 211 includes a first bending area 211a set corresponding to the fracture 223, and the non-bending area 212 includes a first non-bending area 212a and a second non-bending area 212b connected on both sides of the first bending area 211a. Under the bending action of the first bending area 211a, the first non-bending area 212a can be turned outward to fold on the side of the second non-bending area 212b away from the touch layer 22, that is, the first non-bending area 212a can be turned outward to fold on the non-display surface of the second non-bending area 212b. Specifically, the first non-bending area 212a can be folded outward to the back of the electronic device 100. At this time, the display surface of the first non-bending area 212a and the display surface of the second non-bending area 212b are set opposite to each other.

[0074] In actual use, the first non-bending area 212a is folded to the back of the electronic device 100. At this time, the user mainly displays the screen content through the second non-bending area 212b, and the first non-bending area 212a is usually in the screen-off state. When the user holds the electronic device 100, the finger will always touch the first non-bending area 212a. If the electrode segment 2221 located in the first non-bending area 212a and the electrode segment 2222 located in the second non-bending area 212b are 21 remains continuously conductive, the first non-bending area 212a will always generate a touch signal, which will interfere with the touch signal of the second non-bending area 212b. Therefore, the second sub-electrode 222 is disconnected at the connection between the first non-bending area 212a and the second non-bending area 212b (that is, the first bending area 211a), which can avoid the touch signal of the first non-bending area 212a interfering with the touch signal of the second non-bending area 212b, thereby improving the touch effect and the accuracy of touch position detection.

[0075] exist Figure 8 In the implementation shown, the number of bending regions 211 is one, and the number of non-bending regions 212 is two. In this case, the bending region 211 is the first bending region 211a, and the two non-bending regions 212 are the first non-bending region 212a and the second non-bending region 212b, respectively. The first non-bending region 212a is folded outward to the side of the second non-bending region 212b away from the touch layer 22 under the bending action of the first bending region 211a. The fracture 223 is located in the first bending region 211a, and each fracture 223 divides a second sub-electrode 222 into two electrode segments 2221.

[0076] exist Figure 10 In the implementation shown, the number of bending regions 211 is two, and the number of non-bending regions 212 is three. In this case, for the convenience of description, the two bending regions 211 are respectively defined as the first bending region 211a and the second bending region 211b, that is, the bending region 211 includes the first bending region 211a and the second bending region 211b, and the three non-bending regions 212 are respectively defined as the first non-bending region 212a, the second non-bending region 212b and the third non-bending region 212c, that is, The non-bending area 212 includes a first non-bending area 212a, a second non-bending area 212b and a third non-bending area 212c. The first non-bending area 212a, the first bending area 211a, the second non-bending area 212b, the second bending area 211b and the third non-bending area 212c are arranged in sequence along the second direction f2, and the first non-bending area 212a is bent outward to the side of the second non-bending area 212b away from the touch layer 22 under the bending action of the first bending area 211a. Figure 11 As shown, the break 223 is located in the first bending region 211 a , and each break 223 divides a second sub-electrode 222 into two electrode segments 2221 .

[0077] The break 223 is located in the first bending area 211a, which can prevent different areas (i.e., the first non-bending area 212a and the second non-bending area 212b) from sharing the same second sub-electrode 222 that remains continuously conductive, thereby preventing the touch signals of different areas from interfering with each other, thereby improving the touch effect and the accuracy of touch position detection. Figure 10 In the embodiment shown, the break 223 is not provided at the position of the second sub-electrode 222 corresponding to the second bending region 211b (combined with Figure 12 As shown), this is because the applicant also takes into account that: during actual use of the flexible touch screen 20, after the first non-bending area 212a is folded to the back of the electronic device 100, the second non-bending area 212b and the third non-bending area 212c are usually kept coplanar to maintain the integrity of the screen. At this time, the flexible display layer 21 can maintain a complete display touch interface at the position corresponding to the second non-bending area 212b, the second bending area 211b and the third non-bending area 212c for users to watch and perform corresponding touch operations. Therefore, the second sub-electrode 222 remains intact and continuously conductive on the second non-bending area 212b, the second bending area 211b and the third non-bending area 212c, which can avoid the existence of blind spots, thereby ensuring the touch performance of the second non-bending area 212b, the second bending area 211b and the third non-bending area 212c.

[0078] It can be seen from this that the present application not only simply sets a break 223 on the second sub-electrode 222, but also selects the location of the break 223 to avoid different areas (wherein, the area can be composed of a non-bending area 212, or can be composed of at least one bending area 211 and at least two non-bending areas 212) from sharing the same second sub-electrode 222 that maintains continuous conduction, so as to avoid the touch signals of different areas from interfering with each other, thereby improving the touch effect and the accuracy of touch position detection, and at the same time avoiding the existence of blind areas to ensure touch performance.

[0079] In some optional embodiments, there may be multiple touch chips 22b, and the number of touch chips 22b is the same as the number of electrode segments 2221. The first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 are electrically connected to the same touch chip 22b. It can be understood that the break 223 divides the touch pattern formed by the touch electrode 22a into multiple independent sub-touch patterns. The first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 constitute an independent sub-touch pattern, and each sub-touch pattern is located in one area. By electrically connecting the first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 to the same touch chip 22b, independent touch chips 22b can be used to control different sub-touch patterns to perform touch detection functions, thereby preventing interference between touch signals in different areas and improving touch effects and touch position detection accuracy.

[0080] In other optional embodiments, such as Figure 10 and Figure 11 As shown, the touch chip 22b includes a digital chip 224 and multiple analog chips 225. Each analog chip 225 is electrically connected to the digital chip 224, and the number of analog chips 225 is the same as the number of electrode segments 2221. The first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 are respectively electrically connected to the same analog chip 225. It can be understood that the break 223 divides the touch pattern formed by the touch electrode 22a into multiple independent sub-touch patterns, wherein the first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 constitute an independent sub-touch pattern, and a sub-touch pattern is located in an area. The first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 are respectively electrically connected to the same analog chip 225. Different analog chips 225 can be used to control the scanning and collection of touch signals of sub-touch patterns in different areas, so that different areas can perform independent touch detection to avoid mutual interference of touch signals of different areas when being touched, so as to ensure the accuracy of touch position detection.

[0081] The digital chip 224 can receive digital signals converted from analog signals of different regions collected by multiple analog chips 225, and can report the corresponding touch coordinate points after calculation and processing, thereby confirming the touch position. For example, the digital chip 224 may include a data temporary register (Static Random-Access Memory, referred to as SRAM) 224a, a digital signal processor (Digital signal processor, referred to as DSP) 224b and a microprocessor (Micro computing unit, referred to as MCU) 224c, wherein the SRAM is responsible for temporarily storing the data signal transmitted by the analog chip 225, and then handing it over to the DSP for digital signal processing and speeding up the digital signal processing speed. Finally, the MCU performs the final data coordinate calculation and processing.

[0082] Preferably, the touch chip 22b includes a digital chip 224 and multiple analog chips 225. In this way, one touch chip 22b can be used to realize independent touch detection of different areas to avoid mutual interference of touch signals when different areas are touched. The touch position detection has high accuracy, high integration, and relatively low cost.

[0083] For example, in Figure 10 In the implementation shown, the first non-bending area 212a constitutes an area (hereinafter referred to as the first area), the first sub-electrode 221 and the electrode segment 2221 arranged in the first non-bending area 212a form an independent sub-touch pattern (hereinafter referred to as the first sub-touch pattern), the second non-bending area 212b, the second bending area 211b and the third non-bending area 212c constitute another area (hereinafter referred to as the second area), the first sub-electrode 221 and the electrode segment 2221 arranged in the second non-bending area 212b, the second bending area 211b and the third non-bending area 212c form another independent sub-touch pattern (hereinafter referred to as the second sub-touch pattern), the touch chip 22b includes a digital chip 224 and two analog chips 225, the two analog chips 225 respectively denotes a first analog chip 225a and a second analog chip 225b, which are electrically connected to the digital chip 224 respectively, and the first analog chip 225a is electrically connected to the first sub-touch pattern, and the second analog chip 225b is electrically connected to the second sub-touch pattern, so that the first analog chip 225a can be used to scan and collect the touch signal of the first sub-touch pattern in the first area, and the second analog chip 225b can be used to scan and collect the touch signal of the second sub-touch pattern in the second area, thereby enabling independent touch detection in different areas (i.e., the first area and the second area) to avoid mutual interference of touch signals in different areas when being touched, so as to ensure the accuracy of touch position detection.

[0084] Furthermore, in some optional embodiments, the first sub-electrode 221 is a driving electrode, the second sub-electrode 222 is a sensing electrode, and the touch control chip 22b further includes a timing control circuit 226. Each analog chip 225 is electrically connected to the timing control circuit 226. The timing control circuit 226 is used to control the analog chip 225 to sequentially scan the plurality of first sub-electrodes 221 along the first direction f1. That is, Figure 10 As shown, when the flexible display layer 21 is in the unfolded state, the first analog chip 225a can start scanning from the first sub-electrode 221 located in the first area and farthest from the second non-bending area 212b, and scan the multiple first sub-electrodes 221 located in the first area one by one along the second direction f2. When the first analog chip 225a starts to scan the first sub-electrode 221 located in the first area, the first analog chip 225a will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the first preset time is reached, the first analog chip 225a completes the scanning of all the first sub-electrodes 221 in the first area. The first analog chip 225a temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the second analog chip 225b to start scanning from the first sub-electrode 221 closest to the first non-bending area 212a, and scans the multiple first sub-electrodes 221 located in the second area one by one along the second direction f2, thereby realizing a complete scan of the entire flexible touch screen 20, wherein the first preset time is the time taken for the first analog chip 225a to scan all the first sub-electrodes 221 in the first area.

[0085] Alternatively, the second analog chip 225b starts scanning from the first sub-electrode 221 in the second region that is farthest from the first non-bending region 212a, and sequentially scans the plurality of first sub-electrodes 221 in the second region along the second direction f2. When the second analog chip 225b starts to scan the first sub-electrode 221 located in the second area, the second analog chip 225b will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the second preset time is reached, the second analog chip 225b completes the scanning of all first sub-electrodes 221 in the second area. The second analog chip 225b temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the first analog chip 225a to start scanning from the first sub-electrode 221 closest to the second non-bending area 212b, and scans the multiple first sub-electrodes 221 located in the first area one by one along the second direction f2, thereby realizing a complete scan of the entire flexible touch screen 20, wherein the second preset time is the time taken for the second analog chip 225b to scan all the first sub-electrodes 221 in the second area. The second preset time and the first preset time may be the same or different.

[0086] By adopting the above scanning method, scanning can be performed row by row, so that the signals of each first sub-electrode 221 are independent of each other, thereby being able to distinguish the signals of each first sub-electrode 221, thereby facilitating improving the accuracy of touch position detection.

[0087] Of course, in other optional embodiments, multiple analog chips 225 may also scan the first sub-electrode 221 synchronously.

[0088] In some embodiments, such as Figure 8 and Figure 10 As shown, the touch chip 22b can be located on one side of the flexible display layer 21 in the first direction f1, and the second sub-electrode 222 has a break 223. Compared to the embodiment in which the touch chip 22b can be located on one side of the flexible display layer 21 in the first direction f1 and the first sub-electrode 221 has a break 223, the metal traces electrically connected to the electrode segments 2221 do not need to extend to the side of the flexible display layer 21 opposite the touch chip 22b, thereby shortening the length of the metal traces. This reduces the metal trace routing area and the touch blind zone, thereby increasing the capacitance change caused by a finger or active pen touch, improving recognition accuracy, and thus enhancing the touch accuracy and linearity of the touch layer 22.

[0089] As an optional implementation, Figures 10 to 12As shown, the flexible display layer 21 has a first edge 213 and a second edge 214 opposite to each other in the second direction f2, the first edge 213 is provided with a first metal trace 215a, and the second edge 214 is provided with a second metal trace 215b; each second sub-electrode 222 has an odd number of breaks 223, for example, one break 223, three breaks 223, five breaks 223, etc., and the break 223 located in the middle in the second direction f2 is a middle break 223a, and the electrode located on one side of the middle break 223a in the second direction f2 Segment 2221 is a first electrode segment 2221a. The electrode segment 2221 located on the other side of the central break 223a in the second direction f2 is a second electrode segment 2221b. The first electrode segment 2221a is closer to the first edge 213 than the second electrode segment 2221b. The end of the first electrode segment 2221a close to the first edge 213 is electrically connected to the touch chip 22b via the first metal trace 215a, and the end of the second electrode segment 2221b close to the second edge 214 is electrically connected to the touch chip via the second metal trace 215b.

[0090] For example, Figures 10 to 12 In the implementation shown, the touch chip 22b is located on the lower side of the flexible display layer 21, a first edge 213 is formed on the left side of the first non-bending area 212a, and a second edge 214 is formed on the right side of the third non-bending area 212c. There is one fracture 223, and the first electrode segment 2221a located on the left side of the fracture 223 is located in the first non-bending area 212a. The first electrode segment 2221a is electrically connected to the first analog chip 225a through the first metal trace 215a. The second electrode segment 2221b located on the right side of the fracture 223 is located in the second non-bending area 212b, the second bending area 211b and the third non-bending area 212c. The second electrode segment 2221b is electrically connected to the second analog chip 225b through the second metal trace 215b.

[0091] In the present application, the electrode segments 2221 (i.e., the first electrode segment 2221a and the second electrode segment 2221b) arranged in different areas are electrically connected to the touch chip 22b through metal traces (i.e., the first metal trace 215a and the second metal trace 215b) arranged at different edges of the flexible display layer 21. Compared with the case where the electrode segments 2221 in different areas are all electrically connected to the touch chip 22b through metal traces at the same edge, the total length of the metal traces (i.e., the sum of the lengths of the first metal trace 215a and the second metal trace 215b) can be shortened. This can reduce the trace area of ​​the metal traces and the touch blind area, thereby increasing the capacitance change caused by finger or active pen touch, improving recognition accuracy, and thereby improving the touch accuracy and linearity of the touch layer 22.

[0092] As another optional implementation, Figures 13 to 15As shown, the flexible display layer 21 has a first edge 213 and a second edge 214 opposite to each other in the second direction f2, the first edge 213 is provided with a first metal trace 215a and a second metal trace 215b, and the second edge 214 is provided with a third metal trace 215c and a fourth metal trace 215d; each second sub-electrode 222 has an even number of fractures 223, for example, two fractures 223, four fractures 223, six fractures 223, etc., and the electrode segment located in the middle in the second direction f2 is a middle electrode segment 2221c, the electrode segment 2221 located on one side of the middle electrode segment 2221c in the second direction f2 is a first electrode segment 2221a, and the electrode segment 2221 located on the other side of the middle electrode segment 2221c in the second direction f2 is a second electrode segment The first electrode segment 2221a is closer to the first edge 213 than the second electrode segment 2221b. The end of the first electrode segment 2221a close to the first edge 213 is electrically connected to the touch chip 22b through the first metal trace 215a, and the end of the second electrode segment 2221b close to the second edge 214 is electrically connected to the touch chip 22b through the third metal trace 215c. Among any two adjacent middle electrode segments 2221c along the first direction f1, the end of one middle electrode segment 2221c close to the first edge 213 is electrically connected to the touch chip 22b through the second metal trace 215b, and the end of the other middle electrode segment 2221c close to the second edge 214 is electrically connected to the touch chip 22b through the fourth metal trace 215d.

[0093] For example, Figures 13 to 15 In the implementation shown, the touch chip 22b is located on the lower side of the flexible display layer 21, there are two fractures 223, the first electrode segment 2221a is located in the first non-bending area 212a, and the first electrode segment 2221a is electrically connected to the first analog chip 225a through the first metal trace 215a, the second electrode segment 2221b is located in the third non-bending area 212c, and the second electrode segment 2221b is electrically connected to the second analog chip 225b through the third metal trace 215c, the middle electrode segment 2221c is located in the second non-bending area 212b, and in any two adjacent middle electrode segments 2221c along the first direction f1, one end of one middle electrode segment 2221c close to the first edge 213 is electrically connected to the third analog chip 225c through the second metal trace 215b, and the other end of the other middle electrode segment 2221c close to the second edge 214 is electrically connected to the third analog chip 225c through the fourth metal trace 215d.

[0094] In the present application, the electrode segments 2221 (i.e., the first electrode segment 2221a and the second electrode segment 2221b) arranged in different areas (i.e., the first bending area 211a and the second bending area 211b) are electrically connected to the touch chip 22b through metal traces (i.e., the first metal trace 215a and the third metal trace 215c) arranged at different edges of the flexible display layer 21. Compared with the case where the electrode segments 2221 in different areas are all electrically connected to the touch chip 22b through metal traces at the same edge, the total length of the metal traces (i.e., the sum of the lengths of the first metal trace 215a and the third metal trace 215c) can be shortened, thereby reducing the routing area of ​​the metal traces and the touch blind area, thereby increasing the capacitance change caused by finger or active pen touch, improving recognition accuracy, and thereby improving the touch accuracy and linearity of the touch layer 22.

[0095] On this basis, in the two adjacent middle electrode segments 2221c, one end of the middle electrode segment 2221c close to the first edge 213 is electrically connected to the touch chip 22b through the second metal trace 215b, and the other end of the middle electrode segment 2221c close to the second edge 214 is electrically connected to the touch chip 22b through the fourth metal trace 215d. In this way, the metal traces of the multiple middle electrode segments 2221c located in the middle are avoided from being concentrated on the edge of one side, thereby avoiding the width of one side edge in the second direction f2 being larger, which is conducive to realizing the narrow frame design of the flexible touch screen 20.

[0096] Of course, it should be noted that, when the metal wiring is not arranged in the manner described above, in order to ensure electrical connection between the multiple electrode segments 2221 in different areas and the touch chip 22b, additional metal wiring can also be arranged according to actual design requirements.

[0097] See also Figure 16 and Figure 17 The flexible touch screen 20 in the present application can be a scroll screen, and the first axis O1 can be regarded as the winding axis of the bending zone 211. It can be understood that the bending zone 211 of the flexible display layer 21 can be wound along the first axis O1, so as to achieve the effect of a scroll shape, and then the flexible display layer 21 can switch between the unfolded state and the wound state. Normally, when the flexible display layer 21 is in the unfolded state, the size of the flexible display layer 21 in the second direction f2 is greater than or equal to its size in the first direction f1, the bending zone 211 constitutes one end of the flexible display layer 21 in the second direction f2, and the bending zone 211 can be wound around the first axis O1, so that the flexible touch screen 20 can have a larger screen in the unfolded state while having a smaller volume in the wound state, making it more convenient to carry.

[0098] Moreover, since the bending zone 211 can be rolled around the first axis O1, the size of the screen area of ​​the flexible touch screen 20 can change gradually. Compared with the jump-like change of the screen area in the related art, the size of the screen area changes gradually, which makes the size change of the screen area very flexible, thereby improving the user experience of the flexible touch screen 20 to a certain extent.

[0099] Optionally, the shape of the flexible display layer 21 in the unfolded state can be rectangular, oval, square, or circular, etc. Of course, in other embodiments, the shape of the flexible display layer 21 in the unfolded state can also be other shapes, such as a waist shape. The shape of the flexible display layer 21 in the unfolded state can be determined according to actual conditions and is not specifically limited in this application.

[0100] When the flexible display layer 21 is rectangular in the unfolded state, the first direction f1 is the width direction of the flexible display layer 21 in the unfolded state, and the second direction f2 is the length direction of the flexible display layer 21 in the unfolded state. When the flexible display layer 21 is elliptical in the unfolded state, the first direction f1 is the long axis direction of the flexible display layer 21 in the unfolded state, and the second direction f2 is the short axis direction of the flexible display layer 21 in the unfolded state.

[0101] In the present application, a break 223 is preferably provided in the second sub-electrode 222. Because the flexible display layer 21 has a larger dimension in the second direction f2 than in the first direction f1, and in the present application, the first sub-electrode 221 extends along the first direction f1, while the second sub-electrode 222 extends along the second direction f2, the length of the second sub-electrode 222 in the second direction f2 is generally greater than the length of the first sub-electrode 221 in the first direction f1. Consequently, the area of ​​the second sub-electrode 222 is generally larger than the area of ​​the first sub-electrode 221. Therefore, the present application preferably provides a break 223 in the second sub-electrode 222 to more specifically reduce the impedance of the touch electrode 22a and the parasitic capacitance between the touch electrode 22a and the cathode in the flexible display layer 21, thereby making touch signals more easily detectable. This, in turn, improves the detection accuracy and touch performance of the flexible touch screen 20.

[0102] In some embodiments, each second sub-electrode 222 has a break 223. This can further reduce the area of ​​the second sub-electrode 222, further reduce the impedance of the second sub-electrode 222, and reduce the parasitic capacitance between the second sub-electrode 222 and the cathode in the flexible display layer 21, thereby making it easier to detect touch signals, thereby further improving the detection accuracy of the flexible touch screen 20 and further enhancing the touch effect of the flexible touch screen 20.

[0103] See also Figure 16 and Figure 17 In addition to the bending area 211, the flexible display layer 21 also has a non-bending area 212. The non-bending area 212 is connected to one side of the bending area 211 in the second direction f2. The bending area 211 can be rolled around the winding axis, so that when the bending area 211 is unfolded, the display area of ​​the flexible touch screen 20 can be increased, making it easier for users to watch; when the bending area 211 is rolled up, the volume of the electronic device 100 is reduced, making it easier for users to carry.

[0104] The fracture 223 is located at the connection between the non-bending area 212 and the bending area 211 . When the bending area 211 is rolled up and is in a rolled-up state, the side of the bending area 211 close to the non-bending area 212, or the connection between the bending area 211 and the non-bending area 212 constitutes one side edge of the screen of the electronic device 100. According to the user's holding habit of holding the electronic device 100, the finger is likely to touch the edge of the screen, that is, the finger is likely to touch the bending area 211. If the electrode segment 2221 located in the bending area 211 and the electrode segment 2221 located in the non-bending area 212 remain continuously conductive, the bending area 211 will always generate a touch signal, which will interfere with the touch signal of the non-bending area 212. Therefore, the second sub-electrode 222 is disconnected at the connection between the bending area 211 and the non-bending area 212, which can avoid the touch signal of the bending area 211 from interfering with the touch signal of the non-bending area 212, thereby improving the touch effect and the accuracy of touch position detection.

[0105] In some embodiments, the touch chip 22b may be located on one side of the flexible display layer 21 in the first direction f1, and the second sub-electrode 222 may have a break 223. Compared to the embodiment in which the touch chip 22b may be located on one side of the flexible display layer 21 in the first direction f1 and the first sub-electrode 221 has a break 223, the metal traces electrically connected to the electrode segments 2221 do not need to extend to the side of the flexible display layer 21 opposite the touch chip 22b. This shortens the length of the metal traces, reduces the trace area of ​​the metal traces, and reduces the touch blind zone. This in turn increases the capacitance change caused by a finger or active pen touch, improves recognition accuracy, and thus enhances the touch accuracy and linearity of the touch layer 22.

[0106] The flexible display layer 21 in the present application has a first edge 213 and a second edge 214 opposite to each other in the second direction f2.

[0107] In some optional embodiments, such as Figure 16As shown, the flexible display layer 21 can have a bending area 211 and a non-bending area 212. In this case, the bending area 211 has a first edge 213 formed on the left side in the first direction f1, and the non-bending area 212 has a second edge 214 formed on the right side in the first direction f1. The first edge 213 is provided with a first metal trace 215a, and the second edge 214 is provided with a second metal trace 215b; a second sub-electrode 222 has a fracture 223, and the fracture 223 located in the middle in the second direction f2 is a middle fracture 223a, and the fracture 223a located in the middle is in the first direction f2. The electrode segment 2221 on one side in the second direction f2 is the first electrode segment 2221a, and the electrode segment 2221 located on the other side of the middle break 223a in the second direction f2 is the second electrode segment 2221b. The first electrode segment 2221a is closer to the first edge 213 than the second electrode segment 2221b. The end of the first electrode segment 2221a located at the first edge 213 is electrically connected to the touch chip 22b through the first metal trace 215a, and the end of the second electrode segment 2221b located at the second edge 214 is electrically connected to the touch chip 22b through the second metal trace 215b.

[0108] In the present application, the electrode segments 2221 (i.e., the first electrode segment 2221a and the second electrode segment 2221b) arranged in different areas (i.e., the bending area 211 and the non-bending area 212) are electrically connected to the touch chip 22b through metal traces (i.e., the first metal trace 215a and the second metal trace 215b) arranged at different edges of the flexible display layer 21. Compared with the case where the electrode segments 2221 in different areas are all electrically connected to the touch chip 22b through metal traces at the same edge, the total length of the metal traces (i.e., the sum of the lengths of the first metal trace 215a and the second metal trace 215b) can be shortened, thereby reducing the routing area of ​​the metal traces and the touch blind area, thereby increasing the capacitance change caused by finger or active pen touch, improving recognition accuracy, and thereby improving the touch accuracy and linearity of the touch layer 22.

[0109] Of course, it should be noted that, when the metal wiring is not arranged in the manner described above, in order to ensure electrical connection between the multiple electrode segments 2221 in different areas and the touch chip 22b, additional metal wiring can also be arranged according to actual design requirements.

[0110] See also Figure 16 and Figure 17The touch chip 22b includes a digital chip 224 and two analog chips 225. At this time, the number of analog chips 225 is the same as the number of electrode segments 2221, and each analog chip 225 is electrically connected to the digital chip 224. The two analog chips 225 are respectively a first analog chip 225a and a second analog chip 225b. The first sub-electrode 221 and the electrode segment 2221 located in the bending area 211 are respectively electrically connected to the first analog chip 225a, and the first sub-electrode 221 and the electrode segment 2221 located in the non-bending area 212 are respectively electrically connected to the second analog chip 225b, that is, the first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 are respectively electrically connected to the same analog chip 225. It can be understood that the break 223 divides the touch pattern formed by the touch electrode 22a into multiple independent sub-touch patterns, wherein the first sub-electrode 221 and the electrode segment 2221 located in the bending area 211 form an independent sub-touch pattern, and the first sub-electrode 221 and the electrode segment 2221 located in the non-bending area 212 constitute another independent sub-touch pattern, that is, the first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 constitute an independent sub-touch pattern, and the first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 are electrically connected to the same analog chip 225 respectively. Different analog chips 225 can be used to control the scanning and collection of touch signals of sub-touch patterns in different areas, so that different areas can perform independent touch detection to avoid mutual interference of touch signals when different areas are touched, so as to ensure the accuracy of touch position detection.

[0111] The digital chip 224 can receive digital signals converted from analog signals of different regions collected by multiple analog chips 225, and can report the corresponding touch coordinate points after calculation and processing, thereby confirming the touch position. For example, the digital chip 224 may include a data temporary register (Static Random-Access Memory, referred to as SRAM) 224a, a digital signal processor (Digital signal processor, referred to as DSP) 224b and a microprocessor (Micro computing unit, referred to as MCU) 224c, wherein the SRAM is responsible for temporarily storing the data signal transmitted by the analog chip 225, and then handing it over to the DSP for digital signal processing and speeding up the digital signal processing speed. Finally, the MCU performs the final data coordinate calculation and processing.

[0112] When the first sub-electrode 221 is a driving electrode and the second sub-electrode 222 is a sensing electrode, the touch control chip 22b further includes a timing control circuit 226. The first analog chip 225a and the second analog chip 225b are both electrically connected to the timing control circuit 226. The timing control circuit 226 is used to control the analog chip 225 to sequentially scan the plurality of first sub-electrodes 221 along the first direction f1. In other words, Figure 16 As shown, when the flexible display layer 21 is in the unfolded state, the first analog chip 225a starts scanning from the first sub-electrode 221 located in the bending area 211 and is farthest from the non-bending area 212, and scans the multiple first sub-electrodes 221 located in the bending area 211 one by one along the second direction f2. When the first analog chip 225a starts to scan the first sub-electrode 221 located in the bending area 211, the first analog chip 225a will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the first preset time is reached, the first analog chip 225a completes the scanning of all the first sub-electrodes 221 in the bending area 211. The first analog chip 225a temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the second analog chip 225b to start scanning from the first sub-electrode 221 closest to the bending area 211 in the non-bending area 212, and scans the multiple first sub-electrodes 221 located in the non-bending area 212 one by one along the second direction f2, thereby realizing a complete scan of the entire flexible touch screen 20, wherein the first preset time is the time taken for the first analog chip 225a to scan all the first sub-electrodes 221 in the bending area 211.

[0113] Alternatively, the second analog chip 225b starts scanning from the first sub-electrode 221 in the non-bending region 212 that is farthest from the bending region 211 and sequentially scans the plurality of first sub-electrodes 221 in the non-bending region 212 along the second direction f2. When the second analog chip 225b starts to scan the first sub-electrode 221 located in the non-bending area 212, the second analog chip 225b will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the second preset time is reached, the second analog chip 225b completes the scanning of all first sub-electrodes 221 in the non-bending area 212. The second analog chip 225b temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the first analog chip 225a to start scanning from the first sub-electrode 221 closest to the bending area 211, and scans the multiple first sub-electrodes 221 located in the bending area 211 one by one along the second direction f2, thereby realizing a complete scan of the entire flexible touch screen 20, wherein the second preset time is the time taken for the second analog chip 225b to scan all the first sub-electrodes 221 in the non-bending area 212. The second preset time and the first preset time may be the same or different.

[0114] By adopting the above scanning method, scanning can be performed row by row, so that the signals of each first sub-electrode 221 are independent of each other, thereby being able to distinguish the signals of each first sub-electrode 221, thereby facilitating improving the accuracy of touch position detection.

[0115] Of course, in other optional embodiments, multiple analog chips 225 may also scan the first sub-electrode 221 synchronously.

[0116] In some optional embodiments, such as Figure 18 As shown, the flexible display layer 21 may also have two bending areas 211 and one non-bending area 212, that is, the bending area 211 includes a first bending area 211a and a second bending area 211b, and the non-bending area 212 is connected between the first bending area 211a and the second bending area 211b, and the first axis O1 includes a first winding axis of the first bending area 211a and a second winding axis of the second bending area 211b. The first bending area 211a can be wound along the first winding axis, and the second bending area 211b can be wound along the second winding axis, thereby realizing bidirectional unfolding or winding of the flexible touch screen 20; and when the flexible touch screen 20 is bidirectionally unfolded, the display surface of the flexible screen can be increased to facilitate user viewing; when the flexible touch screen 20 is bidirectionally wound, the volume of the electronic device 100 is reduced to facilitate user carrying.

[0117] Furthermore, each second sub-electrode 222 has two breaks 223 (combined Figure 19 and Figure 20As shown), each second sub-electrode 222 is divided into three electrode segments 2221, wherein one break 223 is located at the connection between the first bending area 211a and the non-bending area 212, and the other break 223 is located at the connection between the second bending area 211b and the non-bending area 212, and the three electrode segments 2221 are respectively arranged in the first bending area 211a, the non-bending area 212 and the second bending area 211b.

[0118] When the bending area 211 is rolled up and is in a rolled-up state, the first bending area 211a is close to the side of the non-bending area 212, or the connection between the first bending area 211a and the non-bending area 212 constitutes one side edge of the screen of the electronic device 100, and the second bending area 211b is close to the side of the non-bending area 212, or the connection between the second bending area 211b and the non-bending area 212 constitutes the other side edge of the screen of the electronic device 100. According to the user's holding habit of holding the electronic device 100, the fingers are easy to touch the edge of the screen, that is, the fingers are easy to touch the first bending area 211a and the second bending area 211b. If the fingers are located between the first bending area 211a and the second bending area 211b, the fingers are easy to touch the edge of the screen. The electrode segments 2221 of the second bending area 211b maintain continuous conduction with the electrode segments 2221 located in the non-bending area 212, so the first bending area 211a and the second bending area 211b will always generate touch signals, which will interfere with the touch signals of the non-bending area 212. Therefore, the second sub-electrode 222 is disconnected at the connection between the first bending area 211a and the non-bending area 212, and at the connection between the second bending area 211b and the non-bending area 212, which can avoid the touch signals of the first bending area 211a and the second bending area 211b interfering with the touch signals of the non-bending area 212, thereby improving the touch effect and the accuracy of touch position detection.

[0119] See also Figures 18 to 20, the first bending area 211a forms a first edge 213 on the left side in the second direction f2, the second bending area 211b forms a second edge 214 on the right side in the second direction f2, the first edge 213 is provided with a first metal trace 215a and a second metal trace 215b, and the second edge 214 is provided with a third metal trace 215c and a fourth metal trace 215d; a second sub-electrode 222 has an even number of fractures 223, such as two fractures 223, four fractures 223, six fractures 223, etc., and the electrode segment located in the middle in the second direction f2 is the middle electrode segment 2221c, the electrode segment 2221 located on one side of the middle electrode segment 2221c in the second direction f2 is the first electrode segment 2221a, and the electrode segment 2221 located on the other side of the middle electrode segment 2221c in the second direction f2 is the first electrode segment 2221a. The electrode segment 2221 is a second electrode segment 2221b. The first electrode segment 2221a is closer to the first edge 213 than the second electrode segment 2221b. The end of the first electrode segment 2221a near the first edge 213 is electrically connected to the touch chip 22b via a first metal trace 215a, and the end of the second electrode segment 2221b near the second edge 214 is electrically connected to the touch chip 22b via a third metal trace 215c. Among any two adjacent middle electrode segments 2221c along the first direction f1, the end of one middle electrode segment 2221c near the first edge 213 is electrically connected to the touch chip 22b via the second metal trace 215b, and the end of the other middle electrode segment 2221c near the second edge 214 is electrically connected to the touch chip 22b via a fourth metal trace 215d.

[0120] For example, Figures 18 to 20 In the illustrated implementation, the touch chip 22b is located on the lower side of the flexible display layer 21, there are two fractures 223, the first electrode segment 2221a is located in the first bending area 211a, and the first electrode segment 2221a is electrically connected to the touch chip 22b through the first metal trace 215a, the second electrode segment 2221b is located in the second bending area 211b, and the second electrode segment 2221b is electrically connected to the touch chip 22b through the third metal trace 215c, the middle electrode segment 2221c is located in the bending area 211, and in any two adjacent middle electrode segments 2221c along the first direction f1, one end of one middle electrode segment 2221c close to the first edge 213 is electrically connected to the touch chip 22b through the second metal trace 215b, and the other end of the other middle electrode segment 2221c close to the second edge 214 is electrically connected to the touch chip 22b through the fourth metal trace 215d.

[0121] In the present application, the electrode segments 2221 (i.e., the first electrode segment 2221a and the second electrode segment 2221b) arranged in different areas (i.e., the first bending area 211a and the second bending area 211b) are electrically connected to the touch chip 22b through metal traces (i.e., the first metal trace 215a and the third metal trace 215c) arranged at different edges of the flexible display layer 21. Compared with the case where the electrode segments 2221 in different areas are all electrically connected to the touch chip 22b through metal traces at the same edge, the total length of the metal traces (i.e., the sum of the lengths of the first metal trace 215a and the third metal trace 215c) can be shortened, thereby reducing the routing area of ​​the metal traces and the touch blind area, thereby increasing the capacitance change caused by finger or active pen touch, improving recognition accuracy, and thereby improving the touch accuracy and linearity of the touch layer 22.

[0122] On this basis, in the two adjacent middle electrode segments 2221c, one end of the middle electrode segment 2221c close to the first edge 213 is electrically connected to the touch chip 22b through the second metal trace 215b, and the other end of the middle electrode segment 2221c close to the second edge 214 is electrically connected to the touch chip 22b through the fourth metal trace 215d. In this way, the metal traces of the multiple middle electrode segments 2221c located in the middle are avoided from being concentrated on the edge of one side, thereby avoiding the width of one side edge in the second direction f2 being larger, which is conducive to realizing the narrow frame design of the flexible touch screen 20.

[0123] Of course, it should be noted that, when the metal wiring is not arranged in the manner described above, in order to ensure electrical connection between the multiple electrode segments 2221 in different areas and the touch chip 22b, additional metal wiring can also be arranged according to actual design requirements.

[0124] See also Figures 18 to 20The touch chip 22b includes a digital chip 224 and three analog chips 225. At this time, the number of analog chips 225 is the same as the number of electrode segments 2221, and each analog chip 225 is electrically connected to the digital chip 224. The three analog chips 225 are respectively a first analog chip 225a, a second analog chip 225b and a third analog chip 225c. The first sub-electrode 221 and the electrode segment 2221 located in the first bending area 211a are respectively electrically connected to the first analog chip 225a, the first sub-electrode 221 and the electrode segment 2221 located in the second bending area 211b are respectively electrically connected to the second analog chip 225b, and the first sub-electrode 221 and the electrode segment 2221 located in the non-bending area 212 are respectively electrically connected to the third analog chip 225c, that is, the first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 are respectively electrically connected to the same analog chip 225. It can be understood that the break 223 divides the touch pattern formed by the touch electrode 22a into a plurality of independent sub-touch patterns, wherein the first sub-electrode 221 and the electrode segment 2221 located in the first bending area 211a form an independent sub-touch pattern, the first sub-electrode 221 and the electrode segment 2221 located in the second bending area 211b form another independent sub-touch pattern, and the first sub-electrode 221 and the electrode segment 2221 located in the non-bending area 212 form another independent sub-touch pattern, that is, the break 223 is located in the first bending area. The first sub-electrode 221 and the electrode segment 2221 on the same side of the second direction f2 constitute an independent sub-touch pattern. The first sub-electrode 221 and the electrode segment 2221 located on the same side of the break 223 in the second direction f2 are electrically connected to the same analog chip 225 respectively. Different analog chips 225 can be used to control the scanning and collection of touch signals of the sub-touch patterns in different areas, so that different areas can perform independent touch detection to avoid mutual interference of touch signals in different areas when being touched, thereby ensuring the accuracy of touch position detection.

[0125] The digital chip 224 can receive digital signals converted from analog signals of different regions collected by multiple analog chips 225, and can report the corresponding touch coordinate points after calculation and processing, thereby confirming the touch position. For example, the digital chip 224 may include a data temporary register (Static Random-Access Memory, referred to as SRAM) 224a, a digital signal processor (Digital signal processor, referred to as DSP) 224b and a microprocessor (Micro computing unit, referred to as MCU) 224c, wherein the SRAM is responsible for temporarily storing the data signal transmitted by the analog chip 225, and then handing it over to the DSP for digital signal processing and speeding up the digital signal processing speed. Finally, the MCU performs the final data coordinate calculation and processing.

[0126] When the first sub-electrode 221 is a driving electrode and the second sub-electrode 222 is a sensing electrode, the touch chip 22b further includes a timing control circuit 226. The first analog chip 225a, the second analog chip 225b, and the third analog chip 225c are all electrically connected to the timing control circuit 226. The timing control circuit 226 is used to control the analog chip 225 to scan the multiple first sub-electrodes 221 one by one in sequence along the first direction f1.

[0127] That is, if Figure 18 As shown, when the flexible display layer 21 is in the unfolded state, the first analog chip 225a starts scanning from the first sub-electrode 221 located in the first bending area 211a and is farthest from the non-bending area 212, and scans the multiple first sub-electrodes 221 located in the first bending area 211a one by one along the second direction f2. When the first analog chip 225a starts to scan the first sub-electrode 221 located in the first bending area 211a, the first analog chip 225a will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the first preset time is reached, the first analog chip 225a completes the scanning of all first sub-electrodes 221 in the first bending area 211a. The first analog chip 225a temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the third analog chip 225c to start scanning from the first sub-electrode 221 closest to the first bending area 211a in the non-bending area 212, and scans the multiple first sub-electrodes 221 located in the non-bending area 212 one by one along the second direction f2. When the third analog chip 225c starts to scan the first sub-electrode 221 located in the non-bending area 212, the third analog chip 225c will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the second preset time is reached, the third analog chip 225c completes the scanning of all first sub-electrodes 221 in the non-bending area 212. The third analog chip 225c temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the second analog chip 225b to start scanning from the first sub-electrode 221 closest to the non-bending area 212 in the second bending area 211b, and scans the multiple first sub-electrodes 221 located in the second bending area 211b one by one along the second direction f2, thereby realizing a complete scan of the entire flexible touch screen 20.

[0128] Alternatively, the second analog chip 225b starts scanning from the first sub-electrode 221 located in the second bending region 211b and farthest from the non-bending region 212, and sequentially scans the plurality of first sub-electrodes 221 located in the second bending region 211b along the second direction f2. When the second analog chip 225b starts to scan the first sub-electrode 221 located in the second bending area 211b, the second analog chip 225b will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the second preset time is reached, the second analog chip 225b completes the scanning of all first sub-electrodes 221 in the second bending area 211b. The second analog chip 225b temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the third analog chip 225c to start scanning from the first sub-electrode 221 closest to the second bending area 211b in the non-bending area 212, and scans the multiple first sub-electrodes 221 located in the non-bending area 212 one by one along the second direction f2. When the third analog chip 225c starts to scan the first sub-electrode 221 located in the non-bending area 212, the third analog chip 225c will send a synchronization signal to the timing control circuit 226. At this time, the timing control circuit 226 starts timing and when the first preset time is reached, the third analog chip 225c completes the scanning of all first sub-electrodes 221 in the non-bending area 212. The third analog chip 225c temporarily stops scanning the first sub-electrode 221. At this time, the timing control circuit 226 controls the first analog chip 225a to start scanning from the first sub-electrode 221 closest to the non-bending area 212 in the first bending area 211a, and scans the multiple first sub-electrodes 221 located in the first bending area 211a one by one along the second direction f2, thereby realizing a complete scan of the entire flexible touch screen 20.

[0129] Among them, the first preset time is the time taken by the first analog chip 225a to scan all the first sub-electrodes 221 in the first bending area 211a, and the second preset time is the time taken by the third analog chip 225c to scan all the first sub-electrodes 221 in the non-bending area 212, and the second preset time and the first preset time may be the same or different.

[0130] By adopting the above scanning method, scanning can be performed row by row, so that the signals of each first sub-electrode 221 are independent of each other, thereby being able to distinguish the signals of each first sub-electrode 221, thereby facilitating improving the accuracy of touch position detection.

[0131] Of course, in other optional embodiments, multiple analog chips 225 may also scan the first sub-electrode 221 synchronously.

[0132] In some embodiments, such as Figure 20 As shown, the width b of the cutout 223 in the second direction f2 is 2 μm-5 μm, for example, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, or 5 μm. By controlling the width b of the cutout 223 in the second direction f2 within the above range, the width of the cutout 223 is prevented from being too large, thereby preventing the generation of a touch blind area and improving recognition accuracy.

[0133] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0134] In addition, the above-described embodiments only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all fall within the scope of protection of the present application. Therefore, the content of this specification should not be understood as limiting the present application, and the scope of protection of the present application should be based on the appended claims.

Claims

1. A flexible touch screen, characterized in that: The flexible touch screen comprises: a flexible display layer; and a touch layer, provided on the flexible display layer, the touch layer comprising touch electrodes and a touch chip located on one side of the touch electrodes, the touch chip being electrically connected to the touch electrodes; The touch electrodes include a plurality of first sub-electrodes and a plurality of second sub-electrodes, each of the first sub-electrodes extends along a first direction, each of the second sub-electrodes extends along a second direction, and each of the second sub-electrodes crosses and is insulated from the plurality of first sub-electrodes, and the first direction and the second direction are cross-arranged; The first sub-electrode has a break to divide the first sub-electrode into multiple electrode segments, the electrode segments extend along the first direction, and the electrode segments are continuously conductive along the first direction, and / or the second sub-electrode has a break to divide the second sub-electrode into multiple electrode segments, the electrode segments extend along the second direction, and the electrode segments are continuously conductive along the second direction.

2. The touch screen according to claim 1, wherein: in, The flexible display layer has a bending area, the bending area has a first axis extending along the first direction, the first axis is the bending center axis or the winding axis of the bending area, and the second sub-electrode has the fracture.

3. The touch screen according to claim 2, wherein: Each of the second sub-electrodes has the break.

4. The touch screen according to claim 3, wherein: When the first axis is the bending center axis of the bending zone, the flexible display layer also has multiple non-bending zones, the non-bending zones and the bending zones are alternately arranged along the second direction, and each of the bending zones is located between two adjacent non-bending zones, and the fracture is located in the bending zone.

5. The flexible touch screen according to claim 4, characterized in that: The bending area includes a first bending area set corresponding to the fracture, and the non-bending area includes a first non-bending area and a second non-bending area connected on both sides of the first bending area. The first non-bending area can be turned outward to fold on the side of the second non-bending area away from the touch layer.

6. The flexible touch screen according to claim 4, characterized in that: The bending area includes a first bending area and a second bending area, and the non-bending area includes a first non-bending area, a second non-bending area and a third non-bending area. The first non-bending area, the first bending area, the second non-bending area, the second bending area and the third non-bending area are arranged in sequence along the second direction. The first non-bending area can be turned outward to be folded on the side of the second non-bending area away from the touch layer. The fracture is located in the first bending area, and each of the fractures divides one of the second sub-electrodes into two electrode segments.

7. The flexible touch screen according to claim 3, characterized in that: When the first axis is the winding axis of the bending zone, the flexible display layer also has a non-bending zone, the non-bending zone is connected to one side of the bending zone in the second direction, the bending zone can be wound around the winding axis, and the fracture is located at the connection between the non-bending zone and the bending zone.

8. The flexible touch screen according to claim 7, characterized in that: The bending zone includes a first bending zone and a second bending zone, and the non-bending zone is connected between the first bending zone and the second bending zone; Each of the second sub-electrodes has two breaks to divide each of the second sub-electrodes into three electrode segments, one of which is located at the connection between the first bending area and the non-bending area, and the other break is located at the connection between the second bending area and the non-bending area. The three electrode segments are respectively arranged in the first bending area, the non-bending area and the second bending area.

9. The flexible touch screen according to any one of claims 3 to 8, characterized in that: The touch chip includes a digital chip and multiple analog chips, each of the analog chips is electrically connected to the digital chip, and the number of the analog chips is the same as the number of the electrode segments. The first sub-electrode and the electrode segments located on the same side of the fracture in the second direction are respectively electrically connected to the same analog chip.

10. The flexible touch screen according to claim 9, characterized in that: The first sub-electrode is a driving electrode, the second sub-electrode is a sensing electrode, the touch chip further includes a timing control circuit, each of the analog chips is electrically connected to the timing control circuit, and the timing control circuit is used to control the analog chip to scan the plurality of first sub-electrodes one by one in sequence along the second direction.

11. The flexible touch screen according to any one of claims 1 to 8, characterized in that: The touch chip is located on one side of the flexible display layer in the first direction, and the second sub-electrode has the break.

12. The flexible touch screen according to claim 11, wherein: The flexible display layer has a first edge and a second edge opposite to each other in the second direction, the first edge is provided with a first metal trace, and the second edge is provided with a second metal trace; The second sub-electrode has an odd number of the breaks, and the break located in the middle in the second direction is a middle break, the electrode segment located on one side of the middle break in the second direction is a first electrode segment, and the electrode segment located on the other side of the middle break in the second direction is a second electrode segment, and the first electrode segment is closer to the first edge than the second electrode segment; One end of the first electrode segment close to the first edge is electrically connected to the touch chip through the first metal trace, and one end of the second electrode segment close to the second edge is electrically connected to the touch chip through the second metal trace.

13. The flexible touch screen according to claim 11, wherein: The flexible display layer has a first edge and a second edge opposite to each other in the second direction, the first edge is provided with a first metal trace and a second metal trace, and the second edge is provided with a third metal trace and a fourth metal trace; The second sub-electrode has an even number of the fractures, and the electrode segment located in the middle in the second direction is a middle electrode segment, the electrode segment located on one side of the middle electrode segment in the second direction is a first electrode segment, and the electrode segment located on the other side of the middle electrode segment in the second direction is a second electrode segment, and the first electrode segment is closer to the first edge than the second electrode segment; One end of the first electrode segment close to the first edge is electrically connected to the touch chip through the first metal trace, and one end of the second electrode segment close to the second edge is electrically connected to the touch chip through the third metal trace. Among any two adjacent middle electrode segments along the first direction, one end of the middle electrode segment close to the first edge is electrically connected to the touch chip through the second metal trace, and the other end of the middle electrode segment close to the second edge is electrically connected to the touch chip through the fourth metal trace.

14. The flexible touch screen according to any one of claims 1 to 8, characterized in that: The width of the fracture in the second direction is 2 μm-5 μm.

15. An electronic device, characterized in that: The electronic device comprises the flexible touch screen according to any one of claims 1 to 14.

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