Touch film, touch screen and electronic device

Abstract

A touch film, a touch screen and an electronic device relate to the technical field of display touch screen, comprising a touch electrode layer and a dielectric isolation layer, the touch electrode layer comprises a plurality of metal wires, the plurality of metal wires are arranged in a cross shape to form a plurality of polygonal mesh units; a plurality of breaks are arranged on the metal wires, the plurality of breaks are used for separating the metal wires into an emitter and a receiver, the emitter and the receiver form a touch capacitor structure at the breaks; each end of the two ends of the break along a first direction is adjacent to two sides of at least one mesh unit to electrically isolate the two mesh units. The application supports the break of the touch electrode layer through at least two sides of the mesh unit, the structural strength of the break is enhanced, when the touch film is subjected to external extrusion force or bending, the stress value of the position where the break is located is correspondingly reduced, the stress received by the dielectric isolation layer filled in the break is reduced and is not easy to be deformed, and the structural strength of the touch film is improved.

Description

Technical Field

[0001] This application relates to the field of display touch screen technology, and in particular to a touch film, a touch screen, and an electronic device. Background Technology

[0002] Touch is currently the main medium for human-computer interaction. With the development of touch technology and people's requirements for higher product performance, touch technology is developing towards thinner and lighter designs and higher integration.

[0003] With the development of display technology, more and more screen forms are appearing in the public eye, such as curved screens, waterfall screens, foldable screens, and stretchable screens. Taking mobile phones as an example, the continuous innovation and expansion of mobile phone form factors have led to the formation of high-value-added product series for foldable mobile phones, with folding forms including inward folding and outward folding. In the early stages of foldable product development, touch solutions mainly adopted external ultra-thin film layer touch solutions; with the development of integrated touch technology, the mainstream touch solutions now all adopt the highly integrated thin-film encapsulated integrated touch solutions.

[0004] Thin-film encapsulation integrated touch solution is a method that directly integrates the touch functional layer onto a flexible display panel through processes such as thin-film deposition, photolithography, and dry etching on the encapsulation layer of a flexible display film (such as an OLED film). This approach offers advantages such as low cost, high integration, and thinness. Since the touch electrodes are formed on a metal layer, it is necessary to create physical isolation between the emitter (TX) and receiver (RX) on the same layer using a break-out method. However, see [link to relevant documentation]... Figure 4 As shown, the existing break solution involves breaking at the middle of the metal mesh formed around the pixel. However, during folding reliability testing, it was found that there is a large stress concentration at this break point, causing the medium isolation layer of the touch screen to fracture due to stress concentration, resulting in touch function and screen failure. Summary of the Invention

[0005] This application provides a touch film, a touch screen, and an electronic device. The touch electrode layer is supported by at least two sides of the grid unit. When the touch film is subjected to external extrusion or bending, the stress value at the location of the fracture is reduced accordingly. The stress on the dielectric isolation layer filled in the fracture is reduced and it is not easy to deform, thereby improving the structural strength of the touch film.

[0006] In a first aspect, this application provides a touch film, including a touch electrode layer and a dielectric isolation layer. The touch electrode layer is located within the dielectric isolation layer. The touch electrode layer includes multiple metal lines, which are arranged in a cross pattern to form multiple polygonal grid cells. Multiple breaks are provided on the metal lines, which are used to separate the metal lines into emitters and receivers. The emitters and receivers form a touch capacitor structure at the breaks. A first direction is perpendicular to the conduction direction of the breaks. Each end of the break along the first direction is adjacent to two sides of at least one grid cell. The breaks are used to electrically isolate the grid cells on both sides along their conduction direction.

[0007] This application isolates the emitter and receiver on the touch electrode layer through a fracture, and the emitter and receiver form a touch capacitor structure at the fracture, realizing the capacitive touch function of the touch film. Furthermore, the fracture is supported by at least two sides of the grid unit, so that the metal wires on both sides of the fracture do not form a single cantilever structure, which improves the structural strength of the touch film at the fracture. When the touch film is subjected to external extrusion or bending, the stress value at the fracture location is reduced accordingly, and the stress on the dielectric isolation layer filled in the fracture is reduced, making it less prone to brittle fracture, thus improving the structural strength of the touch film.

[0008] In one possible implementation, the fracture includes a first fracture located between the opposite vertices of at least two diagonally adjacent grid cells, the fracture being adjacent to the vertices, and the width of the first fracture along the first direction being in the range of 1 micrometer to 10 micrometers.

[0009] In one possible implementation, the mesh element includes a first mesh element located at the edge of the emitter and / or the receiver, and at least one vertex of the first mesh element is adjacent to the break.

[0010] The first grid cell serves as the edge grid of the emitter and receiver. The closed structure of the first grid cell enhances the strength of the capacitor structure between the emitter and receiver. It is less prone to deformation and breakage when the first grid cell undergoes bending or other deformations, thereby improving the structural strength of the area between the emitter and receiver and reducing the stress value of the dielectric isolation layer in the fracture when bending.

[0011] In one possible implementation, the mesh cell includes a second mesh cell, all of which have side metal lines isolated from the break.

[0012] The second grid cell is the grid cell inside the emitter and receiver. The closed structure of the second grid cell can improve the structural strength of the emitter and receiver, making them less prone to breakage when the emitter and receiver are deformed, thus improving the structural strength of the emitter and receiver themselves.

[0013] In one possible implementation, the mesh element includes a third mesh element, which is connected to the break, and two adjacent third mesh elements are connected.

[0014] The third grid cell has an open structure, and multiple third grid cells are connected by a break. The two sides of the third grid cell are the emitter and the receiver, respectively.

[0015] In one possible implementation, the emitter has multiple emitter modules, the receiver has multiple receiver modules, at least some of the emitter modules and at least some of the receiver modules are alternately arranged, and at least some of the adjacent emitter modules are connected by a receiver module. The touch electrode layer includes a first metal bridge, which electrically connects at least two emitter modules, thereby achieving electrical connection between adjacent emitter modules.

[0016] In one possible implementation, the first metal bridge spans one side of the receiving module and is electrically connected to two adjacent transmitting modules. The receiving module and the first metal bridge between the two adjacent transmitting modules are electrically isolated to ensure the capacitive structure between the emitter and receiver.

[0017] In one possible implementation, the emitter has multiple emitter modules, the receiver has multiple receiver modules, at least some of the emitter modules and at least some of the receiver modules are alternately arranged, and at least some of the adjacent receiver modules are connected by an emitter module. The touch electrode layer includes a second metal bridge, which electrically connects at least two of the receiver modules, thereby achieving electrical connection between adjacent receiver modules.

[0018] In one possible implementation, the second metal bridge spans one side of the transmitting module and is electrically connected to two adjacent receiving modules. The transmitting module and the second metal bridge are electrically isolated between the two adjacent receiving modules to ensure the capacitive structure between the transmitter and receiver.

[0019] In one possible implementation, the emitter and the receiver are not co-layered within the dielectric isolation layer, forming a double-layer or multi-layer touch electrode layer structure.

[0020] In one possible implementation, the touch electrode layer includes a first connection electrode, the emitter electrode has multiple emitter modules, the first connection electrode is electrically connected to at least two of the emitter modules, and the first connection electrode and the emitter electrode are located on the same layer to achieve electrical connection between adjacent emitter modules.

[0021] In one possible implementation, the touch electrode layer includes a second connection electrode, the receiving electrode has multiple receiving modules, the second connection electrode is electrically connected to at least two of the receiving modules, and the second connection electrode and the receiving electrode are located on the same layer to achieve electrical connection between adjacent receiving modules.

[0022] Secondly, this application provides a touch screen, including a light-emitting layer, an encapsulation layer, and a touch film as described in any one of the above, wherein the touch film, the encapsulation layer, and the light-emitting layer are stacked sequentially, and a touch film is deposited on the light-emitting layer by encapsulation technology to form a display screen with touch function.

[0023] In one possible implementation, the light-emitting layer includes a pixel definition layer, which includes multiple pixels arranged in a matrix, and the multiple pixels and the multiple grid cells correspond one-to-one along the light-emitting direction of the light-emitting layer.

[0024] In one possible implementation, the projection of the pixel onto the touch electrode layer along the light-emitting direction of the light-emitting layer falls entirely into the grid cell corresponding to the pixel, and there is a gap between the side metal line of the grid cell and the projection falling into the grid cell. Each grid cell corresponds to one pixel, and the light emitted by the pixel can pass through the grid cell and through the touch film.

[0025] In one possible implementation, the spacing between two adjacent pixels is greater than the width of the metal line, so that the light emitted by the pixel along the light emission direction passes through the grid cell without being blocked by the metal line.

[0026] In one possible implementation, the first plane is a plane perpendicular to the light emission direction of the light-emitting layer, and the distance between the metal line and the edge of the pixel along the first plane is in the range of 1 micrometer to 10 micrometers.

[0027] In one possible implementation, the light-emitting layer includes an OLED light-emitting layer.

[0028] Thirdly, this application provides an electronic device including a display screen, the display screen including any of the above-described touch screens.

[0029] In one possible implementation, the electronic device includes a foldable phone, the foldable phone including the display screen, the display screen being a flexible foldable display screen. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a foldable phone in its folded state provided in an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the unfolded state of a foldable mobile phone provided in an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the touch electrode layer structure provided in the embodiments of this application;

[0033] Figure 4 This is a schematic diagram of the structure with a break on the side of the mesh cell described in this application;

[0034] Figure 5 This is a schematic diagram of the touch electrode layer with a square grid cell structure provided in the embodiments of this application;

[0035] Figure 6 This is the touch electrode layer and dielectric isolation layer structure provided in the embodiments of this application;

[0036] Figure 7 This application provides Figure 5 Enlarged view of section I;

[0037] Figure 8 This is a schematic diagram of the grid cell structure provided in the embodiments of this application;

[0038] Figure 9 This is a schematic diagram of the touch electrode layer with a square grid cell structure provided in the embodiments of this application;

[0039] Figure 10 This is a schematic diagram of the touch electrode layer with a triangular mesh unit structure provided in the embodiments of this application;

[0040] Figure 11 This application provides Figure 10 Enlarged view of section II;

[0041] Figure 12 This is a schematic diagram of the touch electrode layer with a triangular mesh unit structure provided in the embodiments of this application;

[0042] Figure 13 This is a schematic diagram of the touch electrode layer with a triangular mesh unit structure provided in the embodiments of this application;

[0043] Figure 14 This application provides Figure 13 Enlarged view of section III;

[0044] Figure 15 This is a schematic diagram of the touch electrode layer with a hexagonal grid cell structure provided in the embodiments of this application;

[0045] Figure 16 This is a schematic diagram of the connection between the first metal bridge and the emitter provided in an embodiment of this application;

[0046] Figure 17 This is a schematic diagram of the connection between the second metal bridge and the receiving electrode provided in the embodiments of this application;

[0047] Figure 18 This is a schematic diagram of the double-layer structure of the emitter and receiver provided in the embodiments of this application;

[0048] Figure 19 This is a schematic diagram of the first connection pole provided in an embodiment of this application;

[0049] Figure 20 This is a schematic diagram of the second connection pole provided in an embodiment of this application;

[0050] Figure 21 This is a cross-sectional view of a touchscreen provided in an embodiment of this application;

[0051] Figure 22 This is a relative schematic diagram of the touch electrode layer and pixels provided in the embodiments of this application;

[0052] Figure 23 This application provides Figure 21 Enlarged view of section IV;

[0053] Figure 24 This application provides Figure 22 A magnified view of section V. Detailed Implementation

[0054] The embodiments of this application are described below with reference to the accompanying drawings.

[0055] For ease of understanding, the English abbreviations and related technical terms used in the embodiments of this application will be explained and described below.

[0056] OLED (Organic Light-Emitting Diode), also known as organic electroluminescent display or organic light-emitting semiconductor, is a type of current-driven organic light-emitting device. OLEDs emit light through the injection and recombination of charge carriers, with the luminous intensity proportional to the injected current. Under the influence of an electric field, holes generated at the anode and electrons generated at the cathode move and are injected into the hole transport layer and electron transport layer, respectively, migrating to the emissive layer. When holes and electrons meet in the emissive layer, they generate excitons, which excite the light-emitting molecules to ultimately produce visible light.

[0057] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0058] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0059] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0060] The term “range” as used in this document includes both endpoints; for example, the range from A to B includes both endpoints A and B.

[0061] With the development of electronic product technology, the product forms of electronic devices such as mobile phones and tablets are becoming increasingly diverse. Taking foldable phones as an example, folding effectively reduces the size of the phone, making it easier to carry. In early mobile phone products, due to the limitations of touch technology, input was mostly achieved through a keyboard. The keyboard and the display screen were two components connected by a data transmission link, which was easy to achieve with folding. Currently, most mobile phone displays have touch functionality, integrating input and display output, and the screen size can be increased to 6.74 inches. Various technologies have been used to achieve thinner and more integrated touch technology, such as full lamination technology, including external solutions like GFF, OGS, GF2, Metamesh, and OGM, as well as solutions directly integrated with the display panel such as TOE (Touch on Encapsulation), Once II, and Once II.

[0062] As people's demand for mobile phone functions increases, the size of mobile phone screens also needs to continue to increase to meet people's display needs. However, the increase in the size of the mobile phone screen will affect the portability of the mobile phone. Foldable mobile phones can effectively reduce the flat size of the mobile phone, and the development of existing flexible touch screens has enabled the screen to fold, so that a whole screen can be folded into two separate screens, displaying content of different sizes in different mobile phone forms.

[0063] The advent of foldable phones has effectively increased the size of the display screen when the phone is in use. (See also...) Figure 1 and Figure 2 As shown, Figure 1 This is a diagram showing the state of a foldable phone when folded (500°). The screen of the foldable phone can be in an outward-folding configuration (the screen is on the outer side of the phone in the folded state, such as...). Figure 1 In this configuration, both the top and bottom sides are display screens, allowing the phone screen to still display information. Alternatively, it can be an inward-folding design (where the screen is inside the fold, e.g., ...). Figure 1 The upper and lower sides are both casings, and the screen is folded and hidden inside the phone, requiring the phone to be unfolded to display the screen. Figure 2 This is a diagram showing the unfolded state of the foldable phone 500. Figure 1 The lower half of the foldable phone rotates 180 degrees counterclockwise, revealing... Figure 2 The image shows a mobile phone in its unfolded state. This embodiment uses a folding mobile phone as an example. Figure 2 The upper plane of the screen is the entire surface.

[0064] When in use, the foldable phone 500 switches back and forth between folded and unfolded states, which places high demands on the structural strength of the flexible screen. Existing flexible screens, such as OLED displays, mostly deposit an inorganic insulating layer on the flexible OLED, and then perform metal deposition, patterning, and bridging electrical connections to form the physical electrodes necessary for the touch screen.

[0065] See Figure 3 As shown, Figure 3 This is a schematic diagram of the touch electrode layer structure, which includes a first electrode 170 and a second electrode 180. (See attached diagram) Figure 3 As shown, Figure 3 The shadow style is displayed in the middle (the shadow is only for the purpose of adding shadows). Figure 3 The second electrode is distinguished from the first electrode 170 in the illustration. In practice, the second electrode 180 can have the same style or a different color. Electrode blocks are connected in series to form the first electrode 170. Figure 3 The blank-patterned electrode blocks are connected in series to form the second electrode 180. The first electrode 170 is along... Figure 3 Extending laterally as shown, the second electrode 180 is along... Figure 3As shown, the electrodes extend in the longitudinal direction, and the first electrode 170 and the second electrode 180 are stacked vertically at an alternating position. The first electrode 170 and the second electrode 180 are electrically isolated from each other at the alternating position. In this application, electrical isolation refers to the isolation of electrical connections. For example, a bridging structure can be provided at the alternating position of the first electrode 170 and the second electrode 180 to achieve electrical isolation. Two adjacent electrode pieces in the first electrode 170 are connected by a bridging structure, which passes through the bottom side of the second electrode 180 and leaves a certain gap between them. And / or, two adjacent electrode pieces in the second electrode 180 are connected by a bridging structure, which passes through the top side of the first electrode 170 and leaves a certain gap between them.

[0066] For the flexible display screens described above, the touch film with electrodes can be integrated onto the flexible OLED to display... Figure 4 The grid structure shown, Figure 4 A schematic diagram of a structure with breaks on the sides of the mesh unit. The metal mesh has gaps in the middle, and the gaps are opposite to the pixels of the OLED. Each gap is opposite to a pixel, forming a flexible OLED touch screen with touch function.

[0067] Among them, such as Figure 4 As shown, existing thin-film touch metal meshes are formed after a single metal film patterning process. Therefore, their application along the OLED light-emitting direction (perpendicular to...) Figure 4 They are located in the same stacked spatial position on the plane of the object. To form emitters (TX) and receivers (RX) on the metal mesh and to achieve the physical function of capacitive touch, the emitters (TX) and receivers (RX) need to be physically disconnected. Currently, this is often achieved by setting a break 111 with a width <10µm to create physical electrical isolation at both ends of the break. For example... Figure 4 As shown, the fracture 111 is typically located in the middle of the grid cell. The metal grids on either side of the fracture are the emitter 130 and the receiver 140, respectively, forming a capacitor structure at the fracture. Figure 4The dashed lines pass sequentially through each break 111, separating the two sides of the dashed lines into an emitter 130 and a receiver 140. When a finger touches the outer surface of the touchscreen formed by the touch film, the capacitance voltage at the contact point changes, and the touch position is determined by this change in capacitance. However, this disconnection method inevitably leaves a section of metal suspended in the air. When the touchscreen of a foldable phone bends, stress concentration occurs at the break 111, causing the dielectric isolation layer of the touchscreen to fracture due to stress concentration, resulting in touch functionality and screen failure. Similarly, for non-foldable phones, when the screen is subjected to significant stress, stress concentration can also occur in the dielectric isolation layer at the break, leading to brittle fracture and touch functionality failure.

[0068] To improve the structural strength of touchscreens, this application provides a touch film, wherein, see reference... Figure 5 and Figure 6 As shown, Figure 5 This is a schematic diagram of the touch electrode layer 100 with a square grid cell structure in the touch film. Figure 6 This is a partial schematic diagram of the touch electrode layer 100 and the dielectric isolation layer 200 in the touch film. Figure 6 The dielectric isolation layer 200 above the touch electrode layer 100 is partially hidden to better show the relative positional relationship between the touch electrode layer 100 and the dielectric isolation layer 200.

[0069] The touch film includes a touch electrode layer 100 and a dielectric isolation layer 200, with the touch electrode layer 100 located within the dielectric isolation layer 200. The touch electrode layer 100 includes multiple metal lines 110. Some of these metal lines 110 are first metal lines, which are parallel to each other and extend in a downward-left direction; the other portion of the metal lines 110 are second metal lines, which are parallel to each other and extend in a downward-right direction. The two portions of metal lines 110 are arranged in an intersecting pattern to form a mesh-like touch electrode layer 100, which can also be referred to as a metal mesh.

[0070] Multiple adjacent metal lines together form a polygonal unit called a grid cell 120. The touch electrode layer 100 has multiple grid cells 120, which are polygonal in shape. Some grid cells 120 have the same size, while others have different sizes. Specifically, each grid cell 120 includes multiple side metal lines and a cavity area enclosed by the metal lines. This embodiment uses a quadrilateral grid cell 120 as an example.

[0071] See Figure 7 As shown, Figure 7 for Figure 5The enlarged view at point I in the diagram shows the fracture 111 more clearly. The metal wire 110 has a fracture 111. Specifically, the first direction is perpendicular to the conduction direction of the fracture 111. Each end of the fracture 111 along the first direction is adjacent to the two sides of at least one grid cell. The fracture 111 is used to electrically isolate (non-conductively conduct) the grid cells 120 on both sides along its conduction direction. The fact that each end of the fracture 111 along the first direction is adjacent to the two sides of at least one grid cell ensures that the metal wires on both sides of the fracture 111 do not form a single cantilever structure, but are supported by at least two metal wires of the grid cell. This improves the structural strength of the touch film at the fracture point. When the touch film is subjected to external pressure or bending, the stress value at the fracture point is correspondingly reduced. The stress on the dielectric isolation layer filled within the fracture point is reduced, making it less prone to brittle fracture, thus improving the structural strength of the touch film.

[0072] Specifically, see Figure 7 As shown, the fracture 111 described in this embodiment includes a first fracture 112, which is located between two opposite vertices 121 of two diagonally adjacent grid cells 120.

[0073] In this application, diagonal adjacency refers to two grid cells 120 being adjacent along a diagonal direction. See also... Figure 7 As shown, taking grid cell A as an example, grid cell A has four grid cells C with adjacent sides, and the adjacent grid cells A and C have the same side; grid cell A has four grid cells B with adjacent diagonals, and the adjacent grid cells A and B have opposite diagonals.

[0074] See Figure 7 As shown, taking grid cell A as an example, there is a first break 112 between grid cell A and grid cell B to its right, forming a touch capacitive structure between grid cell A and grid cell B to its right. (See reference...) Figure 5 As shown, the touch electrode layer 100 is provided with a plurality of first breaks 112, and the plurality of first breaks 112 are arranged in a certain regular pattern to separate the metal line 110 into an emitter 130 and a receiver 140. The emitter 130 and the receiver 140 are electrically isolated at the first breaks 112, so that the emitter 130 and the receiver 140 form a touch capacitor structure at the first breaks 112.

[0075] In this embodiment, the first break 112 on the touch electrode layer 100 is located at the top corner of the grid unit 120. The first break 112 isolates the emitter 130 and the receiver 140, and the emitter 130 and the receiver 140 form a touch capacitor structure at the first break 112, realizing the capacitive touch function of the touch film. Furthermore, the first break 112 located at the top corner of the grid unit 120 eliminates the physical space of the suspended metal. When the touch film is subjected to external pressure or bending, the stress value at the location of the first break 112 is reduced accordingly. The stress on the dielectric isolation layer filled in the first break 112 is reduced, making it less prone to brittle fracture, thereby improving the structural strength of the touch film.

[0076] Specifically, through the Figure 4 The touch electrode layer 100 shown (the break is located on the side of the grid cell) and Figure 5 The touch electrode layer 100 shown (with the fracture at the top corner of the grid cell) was subjected to a reciprocating bending test. During the bending process, the stress at the fracture point in the bending area was measured. The strain concentration factor at the fracture point on the side of the grid cell was 1.676, and the strain concentration factor at the fracture point at the top corner of the grid cell was 1.503. The strain concentration factor at the top corner of the grid cell was reduced by 10.32% compared to the side, which effectively reduced the stress level of the touch screen under bending and other deformations, and prevented the touch film from breaking or being damaged after multiple bends.

[0077] In one possible implementation, see [reference] Figure 7 As shown, the width of the first fracture 112 is in the range of 1 micrometer to 10 micrometers. The width of the first fracture 112 refers to its width along a first direction, which is the direction of the line connecting two diagonally adjacent grid cells 120 separated by the first fracture 112. For example, Figure 7 The direction pointed to by the arrow corresponding to the location of the first fracture 112 is the first direction corresponding to the first fracture 112. The first direction can also be... Figure 7 The opposite direction of the arrow shown.

[0078] Taking grid cell A as an example, there is a break between grid cell A and grid cell B on the right. The direction of the connection between grid cell A and grid cell B is the first direction. The width of the first break 112 along the first direction is in the range of 1 micrometer to 10 micrometers to ensure that the emitter 130 and the receiver 140 form effective electrical isolation at the break 111, forming a touch capacitor structure.

[0079] In one possible implementation, see [reference] Figure 5 and Figure 8As shown, the grid cell 120 includes a first grid cell 122, which is located at the edge of the emitter 130 and the receiver 140. At least one vertex of the first grid cell 122 is adjacent to the break 111. The first grid cell 122 has at least one secondary adjacent grid cell, for example... Figure 7 In the grid cell A, there is a first grid cell 122. The first grid cell 122 has four secondary adjacent grid cells B. In this embodiment, the secondary adjacent grid cells and the first grid cell 122 are diagonally adjacent. A first break 112 is provided between the relative apex 121 of the first grid cell 122 and at least some of the secondary adjacent grid cells. The first break 112 electrically isolates the first grid cell 122 and the secondary adjacent grid cells.

[0080] In this embodiment, the metal wires 110 surrounding the first grid unit 122 do not have breaks 111. The first grid unit 122 is not connected to its adjacent side grid units, nor is it connected to its diagonally adjacent grid units. The first grid unit 122 is surrounded by the metal wires 110 to form a closed structure. For the first grid unit 122 located in the bending area of ​​the touch screen, the first grid unit 122 serves as the edge grid of the emitter 130 and the receiver 140. The closed structure of the first grid unit 122 can enhance the strength of the capacitor structure between the emitter 130 and the receiver 140. When the first grid unit 122 undergoes bending or other deformations, it is less prone to deformation and breakage, thereby improving the structural strength of the area separated by the emitter 130 and the receiver 140 and reducing the stress value of the dielectric isolation layer within the break 111 when bending. In this application, the main focus is on reducing the stress value of the inorganic layer in the dielectric isolation layer when bending.

[0081] The emitter 130 is composed of multiple grid cells 120, and the receiver 140 is also composed of multiple grid cells 120. (See also...) Figure 6 and Figure 8 As shown, taking the upper part as the emitter 130 and the lower part as the receiver 140 as an example, the emitter 130 and receiver 140 are connected by a zigzag-like arrangement of breaks 111, forming mutually intersecting and staggered emitter 130 and receiver 140. The edge grid of the emitter 130 and receiver 140 is the first grid cell 122, and the breaks 111 are provided between the first grid cells 122 of the emitter 130 and the first grid cells 122 of the receiver 140, forming a touch capacitive structure.

[0082] In this embodiment, for a portion of the grid cell, there is a break 111 between the portion of the grid cell and at least one of its adjacent grid cells. The portion of the grid cell is a first grid cell 122. The first grid cell 122 is the grid cell at the edge of the emitter 130 and the receiver 140. The two sides of the first grid cell 122 adjacent to the break 111 play a major supporting role for the metal wire at the break 111.

[0083] In one possible implementation, see [reference] Figure 8 As shown, the mesh cell 120 includes a second mesh cell 123. All side metal wires and breaks 111 of the second mesh cell 123 are isolated from each other. The side metal wires and breaks 111 of the second mesh cell 123 are not directly connected, but are separated by a distance equal to the width of the side of the mesh cell 120. The second mesh cell 123 has at least one secondary adjacent mesh cell, and the secondary adjacent mesh cell and its corresponding second mesh cell 123 are diagonally adjacent. The second mesh cell 123 and all its corresponding secondary adjacent mesh cells are electrically connected at their opposite vertices. There are no breaks 111 between the second mesh cell 123 and all its corresponding secondary adjacent mesh cells. For example, Figure 7 The grid cell C above or below the left of the middle grid cell A is one of the second grid cells 123. There is no break 111 between the second grid cell 123 and its diagonally adjacent grid cells. The second grid cell 123 is not located at the edge grid adjacent to the emitter 130 and the receiver 140, but is located in the inner grid of the emitter 130 and the receiver 140.

[0084] In this embodiment, the metal wires 110 surrounding the second grid unit 123 do not have breaks 111. The second grid unit 123 is not connected to its adjacent side grid units, nor is it connected to its diagonally adjacent grid units. The second grid unit 123 is surrounded by the metal wires 110 to form a closed structure. The second grid unit 123 is the grid unit within the emitter 130 and receiver 140. The closed structure of the second grid unit 123 can improve the structural strength of the emitter 130 and receiver 140, making them less prone to breakage when the emitter 130 and receiver 140 deform, thus improving the structural strength of the emitter 130 and receiver 140 themselves.

[0085] In one possible implementation, see [reference] Figure 8As shown, the mesh cell 120 includes a third mesh cell 124, which is connected to a break 111. Adjacent third mesh cells 124 are connected. The third mesh cell 124 has multiple secondary adjacent mesh cells, and the third mesh cell 124 and its corresponding secondary adjacent mesh cells are diagonally adjacent. A break 111 is provided between at least some of the secondary adjacent mesh cells corresponding to the third mesh cell 124 and the third mesh cell 124. The second direction is the direction of the line connecting the third mesh cell 124 and its corresponding secondary adjacent mesh cell, for example... Figure 8 The direction of the line connecting two adjacent third grid cells 124 is the second direction, and the conduction direction of the break 111 is consistent with the second direction.

[0086] In this embodiment, the third grid unit 124 has an open structure, and the metal wires 110 around the third grid unit 124 are broken at the top corner to form a break 111 structure. Multiple third grid units 124 are connected through the break 111. The two sides of the third grid unit 124 are respectively an emitter 130 and a receiver 140. The touch electrode layer 100 forms a touch capacitor structure at the multiple connected third grid units 124.

[0087] In one possible implementation, see [reference] Figure 9 As shown, the break 111 on the touch film may further include a second break 113, the two ends of which are respectively adjacent to at least two side metal lines of the first grid unit 122. In this embodiment, see reference... Figure 9 As shown, after the deposition of the overall metallic mesh, in Figure 9 The metal line at the position indicated by the double dashed line is etched away to form the second break 113 described in this embodiment. The conduction direction of the second break 113 is connected to the third grid cells 124 on both sides to form a phase-separated capacitor structure between the emitter 130 and the receiver 140.

[0088] A second break 113 is formed by removing two sides of the third grid cell 124. The second break 113 and the third grid cell 124 are connected to form a capacitor channel structure. A apex of the first grid cell 122 located at the edge of the emitter 130 and the receiver 140 is adjacent to the second break 113. At least two sides of the first grid cell 122 provide support for the second break 113.

[0089] Specifically, all side metal wires of the second grid cell 123 are isolated from the second break 113. The side metal wires of the second grid cell 123 are not directly connected to the second break 113, but are separated by a distance equal to the width of the side of the grid cell 120. The metal wires 110 surrounding the second grid cell 123 do not have the second break 113. The second grid cell 123 is not connected to its adjacent side grid cells, nor is it connected to its diagonally adjacent grid cells. The second grid cell 123 is surrounded by the metal wires 110, forming a closed structure. The second grid cell 123 is the grid cell within the emitter 130 and receiver 140. The closed structure of the second grid cell 123 improves the structural strength of the emitter 130 and receiver 140, making them less prone to breakage when deformed, thus enhancing the structural strength of the emitter 130 and receiver 140 themselves.

[0090] In one possible implementation, see [reference] Figure 10 As shown, the grid cell 120 in this embodiment is triangular.

[0091] See Figure 11 As shown, the break 111 on the touch film described in this embodiment is the first break 112. (See reference...) Figure 11 As shown, taking grid cell A as an example, grid cell A includes three side-adjacent grid cells B and nine diagonally adjacent grid cells C. A first break 112 is formed between grid cell A and the two grid cells C below it, and a first break 112 is formed between grid cell B and the two grid cells C on the right side. The first break 112 is located between two diagonally adjacent grid cells 120, and in this embodiment, one first break 112 can be located between multiple pairs of diagonally adjacent grid cells 120.

[0092] in, Figure 11 The direction indicated by the straight arrow shown can be a first direction, which is perpendicular to the conduction direction of fracture 111. Both ends of the first fracture 112 along the first direction are adjacent to the two sides of two mesh cells, which share a single side. Three metal wires jointly support the corresponding first fracture 112. Furthermore, the width of the first fracture 112 along the first direction can be in the range of 1 micrometer to 10 micrometers.

[0093] See Figure 10 and Figure 11 As shown, there are multiple first breaks 112, and the multiple first breaks 112 are connected together. A third grid cell 124 is connected between two adjacent first breaks 112. The emitter 130 and the receiver 140 form a capacitor structure at the first break 112.

[0094] The first grid cell 122 is located at the edge of the emitter 130 and the receiver 140. At least one apex of the first grid cell 122 is adjacent to the first break 112. The two sides of the first grid cell 122 adjacent to the break 111 play a major supporting role for the metal wire at the break 111.

[0095] All side metal lines of the second grid cell 123 are isolated from the first break 112. The side metal lines of the second grid cell 123 are not directly connected to the first break 112, but are separated by a distance equal to the width of the side of at least one grid cell 120. The metal lines 110 surrounding the second grid cell 123 do not have the first break 112. The second grid cell 123 is not connected to its adjacent side grid cells, nor is it connected to its diagonally adjacent grid cells. The second grid cell 123 is surrounded by the metal lines 110, forming a closed structure. The second grid cell 123 is the grid cell within the emitter 130 and receiver 140. The closed structure of the second grid cell 123 improves the structural strength of the emitter 130 and receiver 140, making them less prone to breakage when deformed, thus enhancing the structural strength of the emitter 130 and receiver 140 themselves.

[0096] In one possible implementation, see [reference] Figure 12 As shown, the grid unit 120 in this embodiment is triangular. The break 111 on the touch film may further include a second break 113, the two ends of which are respectively adjacent to at least two side metal lines of the first grid unit 122. In this embodiment, see reference Figure 12 As shown, after the deposition of the overall metallic mesh, in Figure 12 The metal line at the position indicated by the double dashed line is etched away to form the second break 113 described in this embodiment. The conduction direction of the second break 113 is connected to the third grid cells 124 on both sides to form a phase-separated capacitor structure between the emitter 130 and the receiver 140.

[0097] A second break 113 is formed by removing two sides of the third grid cell 124. The second break 113 and the third grid cell 124 are connected to form a capacitor channel structure. A apex of the first grid cell 122 located at the edge of the emitter 130 and the receiver 140 is adjacent to the second break 113. At least two sides of the first grid cell 122 provide support for the second break 113.

[0098] Specifically, all side metal wires of the second grid cell 123 are isolated from the second break 113. The side metal wires of the second grid cell 123 are not directly connected to the second break 113, but are separated by a distance equal to the width of the side of the grid cell 120. The metal wires 110 surrounding the second grid cell 123 do not have the second break 113. The second grid cell 123 is not connected to its adjacent side grid cells, nor is it connected to its diagonally adjacent grid cells. The second grid cell 123 is surrounded by the metal wires 110, forming a closed structure. The second grid cell 123 is the grid cell within the emitter 130 and receiver 140. The closed structure of the second grid cell 123 improves the structural strength of the emitter 130 and receiver 140, making them less prone to breakage when deformed, thus enhancing the structural strength of the emitter 130 and receiver 140 themselves.

[0099] In one possible implementation, see [reference] Figure 13 and Figure 14 As shown, the grid unit 120 in this embodiment is triangular. The break 111 on the touch film may also include a first break 112 and a second break 113.

[0100] in, Figure 14 The direction indicated by the straight arrow shown can be the first direction, which is perpendicular to the conduction direction of the fracture. Both ends of the first fracture 112 along the first direction are adjacent to the two sides of two grid cells. The two grid cells share a side, and the three metal wires jointly support the corresponding first fracture 112.

[0101] The two ends of the second break 113 are respectively adjacent to at least two side metal wires of the first grid cell 122. In this embodiment, see reference. Figure 14 As shown, after the deposition of the overall metallic mesh, in Figure 14 The metal line at the position indicated by the double dashed line is etched away to form the second break 113 described in this embodiment. The conduction direction of the second break 113 is connected to the third grid cells 124 on both sides to form a phase-separated capacitor structure between the emitter 130 and the receiver 140.

[0102] In one possible implementation, see [reference] Figure 15 As shown, the grid unit 120 in this embodiment is hexagonal. The break 111 on the touch film may include a second break 113.

[0103] The two ends of the second break 113 are respectively adjacent to at least two side metal wires of the first grid cell 122. In this embodiment, see reference. Figure 15 As shown, after the deposition of the overall metallic mesh, in Figure 15The metal line at the position indicated by the double dashed line is etched away to form the second break 113 described in this embodiment. The conduction direction of the second break 113 is connected to the third grid cells 124 on both sides to form a phase-separated capacitor structure between the emitter 130 and the receiver 140.

[0104] In one possible implementation, see [reference] Figure 5 As shown, the transmitter 130 includes a plurality of transmitter modules 131, and the receiver 140 has a plurality of receiver modules 141. At least some of the transmitter modules 131 and at least some of the receiver modules 141 are arranged alternately, and at least some of the adjacent transmitter modules 131 are connected by a receiver module 141.

[0105] See Figure 16 As shown, Figure 16 This is a schematic diagram of the connection between the first metal bridge and the emitter, where the upper part is a touch film layer. The touch film layer includes a touch electrode layer 100 and a dielectric isolation layer 200. The touch electrode layer 100 includes an emitter 130 and a receiver 140. The emitter 130 and the receiver 140 are electrically isolated from each other to form a touch capacitor structure.

[0106] See Figure 16 As shown, two adjacent transmitting modules 131 are separated by a receiving module 141. The touch electrode layer 100 includes a first metal bridge 150, which electrically connects at least two transmitting modules 131. In this embodiment, taking the first metal bridge 150 electrically connecting two transmitting modules 131 as an example, extending the length of the first metal bridge 150 can also electrically connect three or more transmitting modules 131. It should be noted that, for a complete screen, the touch electrode layer 100 of the screen touch film is divided into multiple transmitting modules 131 and receiving modules 141, with multiple transmitting modules 131 electrically connected to form a whole, and multiple receiving modules 141 electrically connected to form a whole.

[0107] Specifically, a portion of the receiving module 141 is located between two adjacent transmitting modules 131, and a first metal bridge 150 spans one side of the receiving module 141 and is electrically connected to the two adjacent transmitting modules 131. The first metal bridge 150 may span the bottom side of the intermediate receiving module 141.

[0108] Two adjacent transmitting modules 131 are electrically connected via a first metal bridge 150. The receiving module 141 located between the two adjacent transmitting modules 131 is electrically isolated from the first metal bridge 150, and the first metal bridge 150 and the receiving module 141 do not contact each other. Specifically, a dielectric isolation layer 200 may be filled between the first metal bridge 150 and the receiving module 141.

[0109] In one possible implementation, see [reference] Figure 5As shown, the transmitter 130 includes a plurality of transmitter modules 131, and the receiver 140 has a plurality of receiver modules 141. At least some of the transmitter modules 131 and at least some of the receiver modules 141 are arranged alternately, and at least some of the adjacent transmitter modules 131 are connected by a receiver module 141.

[0110] See Figure 17 As shown, Figure 17 This is a schematic diagram of the connection between the second metal bridge and the receiving electrode. The upper part is a touch film layer, which includes a touch electrode layer 100 and a dielectric isolation layer 200. The touch electrode layer 100 includes an emitter 130 and a receiver 140. The emitter 130 and the receiver 140 are electrically isolated from each other to form a touch capacitor structure.

[0111] See Figure 17 As shown, two adjacent receiving modules 141 are separated by a transmitting module 131. The touch electrode layer 100 includes a second metal bridge 160, which electrically connects at least two receiving modules 141. In this embodiment, taking the second metal bridge 160 electrically connecting two receiving modules 141 as an example, extending the length of the second metal bridge 160 can also electrically connect three or more receiving electrodes 140.

[0112] Specifically, a portion of the transmitting module 131 is located between two adjacent receiving modules 141, and a second metal bridge 160 spans one side of the transmitting module 131 and is electrically connected to the two adjacent receiving modules 141. The second metal bridge 160 may span the bottom side of the intermediate transmitting module 131.

[0113] Two adjacent receiving modules 141 are electrically connected via a second metal bridge 160. The transmitting module 131 located between the two adjacent receiving modules 141 is electrically isolated from the second metal bridge 160, and the second metal bridge 160 and the transmitting module 131 do not contact each other. Specifically, a dielectric isolation layer 200 may be filled between the second metal bridge 160 and the transmitting module 131.

[0114] In one possible implementation, see [reference] Figure 5 As shown, the transmitter 130 includes a plurality of transmitter modules 131, and the receiver 140 has a plurality of receiver modules 141. At least some of the transmitter modules 131 and at least some of the receiver modules 141 are arranged alternately, and at least some of the adjacent transmitter modules 131 are connected by a receiver module 141.

[0115] See Figure 18 As shown, in this embodiment, the emitter 130 and the receiver 140 are not co-layered within the dielectric isolation layer 200. The emitter 130 and the receiver 140 have a double-layer structure, and the break 111 is located between the layers of the emitter 130 and the receiver 140.

[0116] Specifically, see Figure 19 As shown, the touch electrode layer 100 includes a first connection electrode 132, which is electrically connected to at least two transmitter modules 131. In this embodiment, two transmitter modules 131 are electrically connected as an example. The first connection electrode 132 and the transmitter electrode 130 are located on the same layer.

[0117] Specifically, see Figure 20 As shown, the touch electrode layer 100 includes a second connection electrode 142, which is electrically connected to at least two receiving modules 141. In this embodiment, two receiving modules 141 are electrically connected as an example. The second connection electrode 142 and the receiving electrode 140 are located on the same layer.

[0118] This application also provides a touch screen, see reference. Figure 21 As shown, Figure 21 This is a cross-sectional view of a touch screen. The touch screen includes a light-emitting layer 300, an encapsulation layer 400, and a touch film as described in any of the above embodiments, which are stacked in sequence. The touch film includes a touch electrode layer 100 and a dielectric isolation layer 200. The dielectric isolation layer 200 and the encapsulation layer 400 are bonded together, and the touch electrode layer 100 is located within the dielectric isolation layer 200.

[0119] The light-emitting layer 300 can be a flexible OLED light-emitting layer, including a pixel definition layer 310, on which multiple pixels 311 are provided. (See attached image) Figure 22 As shown, Figure 22 This is a schematic diagram showing the relative positions of the touch electrode layer and the pixels.

[0120] In this configuration, the pixels 311 and the multiple grid units 120 in the touch electrode layer 100 correspond one-to-one with each other along the light emission direction of the light-emitting layer 300. Specifically, the light emission direction of the light-emitting layer 300 is as follows: Figure 17 The direction indicated by the middle arrow. The light emitted by each pixel 311 diffuses outward through its corresponding grid unit 120, and different grid units 120 correspond to pixels 311 of the same or different colors.

[0121] The touch screen described in this embodiment is a flexible touch screen that can be repeatedly bent. It is formed by encapsulating and integrating a touch film on the light-emitting layer 300, and by setting an encapsulation layer 400 and a touch film on the flexible OLED light-emitting layer. Furthermore, the emitter 130 and receiver 140 of the touch electrode layer 100 in the touch film have a break 111 at the apex of the grid unit 120. The resulting touch capacitor structure is located at the apex of the grid unit. When the touch screen is subjected to external pressure or bending, the stress value at the location of the break 111 is correspondingly reduced. The dielectric isolation layer filled within the break 111 can withstand greater stress without deformation, thus improving the structural strength of the touch screen and extending its service life.

[0122] In one possible implementation, see [reference] Figure 22 and Figure 23 As shown, Figure 23 for Figure 21 Enlarged view of point IV in the image, pixel 311 along the emission direction of the light-emitting layer 300 (see reference). Figure 23 The projection of the center arrow (in the direction indicated by the center arrow) onto the touch electrode layer 100 falls entirely within the grid unit 120 corresponding to the pixel 311.

[0123] See Figure 23 As shown, Figure 23 The projection of a certain pixel 311 along the light emission direction of the light emission layer 300 onto the plane where the touch electrode layer 100 is located is the area between the two dashed lines. Figure 23 The two metal lines 110 shown correspond to a grid unit 120. The projection of the pixel 311 onto the plane of the touch electrode layer 100 and the metal line 110 have a gap, so that the light emitted by the pixel 311 along the light emission direction can pass through the grid unit 120 without being blocked by the metal line 110.

[0124] Specifically, the spacing between two adjacent pixels 311 is greater than the width of the metal line 110. (See also...) Figure 24 As shown, Figure 24 for Figure 22 Enlarged view at point V; the spacing between two adjacent pixels 311 is L1, and the width of the metal line 110 is L2. The value of the spacing L1 is greater than the value of the width L2, so that when the touch screen is viewed from above, there is a gap between the edge of the pixel 311 and the metal lines 110 around it, and the area of ​​the pixel 311 is smaller than the area of ​​the grid unit 120.

[0125] Specifically, the first plane is a plane perpendicular to the light-emitting direction of the light-emitting layer 300, for example... Figure 22 and Figure 24 The plane in which the graphic is located is the first plane. Along the first plane, the distance between the metal line 110 and the edge of the pixel 311 is in the range of 1 micrometer to 10 micrometers, so as to ensure that the light emitted by the pixel 311 can pass through the grid unit 120 to a large extent without being blocked by the metal line 110.

[0126] For example, see Figure 24 As shown, in Figure 24 On the plane shown, the distance between the metal line 110 and the edge of the pixel 311 is the perpendicular distance from a point on the edge of the pixel 311 to the edge of the metal line 110, as shown. Figure 24 The distance L3 shown is, in actual touchscreen products, the vertical distance from a point on the edge of the projection of pixel 311 onto the first plane along the light emission direction to the edge of the metal line 110.

[0127] This application also provides an electronic device, including a display screen, which includes a touch screen as described in any of the above embodiments. The electronic device can be a terminal device such as a mobile phone, tablet, or PC. The main application scenario for the electronic device described in this application is to improve the probability of touch screen failure during device bending and use, for example, see [reference needed]. Figure 1 and Figure 2 As shown, the electronic device can be a foldable phone, which includes the aforementioned display screen, which is a flexible foldable display screen.

[0128] This application places the electrode break of the touch film in the electronic device at the top corner of the grid unit. When the touch screen of the folded part of the phone bends, the stress concentration coefficient at the break point is effectively reduced, which reduces the possibility of stress concentration fracture of the dielectric isolation layer of the touch screen, thereby reducing the probability of touch function and screen failure and improving the service life of the display.

[0129] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A touch film, characterized in that, It includes a touch electrode layer and a dielectric isolation layer. The touch electrode layer is located within the dielectric isolation layer. The touch electrode layer includes multiple metal lines, which are arranged in a cross pattern to form multiple polygonal grid units. The metal wire has multiple breaks, which are used to separate the metal wire into an emitter and a receiver. The emitter and the receiver form a touch capacitor structure at the breaks. A first direction is perpendicular to the conduction direction of the break, the break includes a first break located between the opposite apex corners of at least two diagonally adjacent grid cells, the break and the apex corner are adjacent to each other, and each end of the break along the first direction is adjacent to the two sides of at least one grid cell, the break being used to electrically isolate the grid cells on both sides along its conduction direction.

2. The touch film according to claim 1, characterized in that, The width of the first fracture along the first direction is in the range of 1 micrometer to 10 micrometers.

3. The touch film according to claim 1, characterized in that, The grid cell includes a first grid cell located at the edge of the emitter and / or the receiver, and at least one vertex of the first grid cell is adjacent to the break.

4. The touch film according to claim 1, characterized in that, The grid cell includes a second grid cell, and all side metal lines of the second grid cell are isolated from the break.

5. The touch film according to claim 1, characterized in that, The grid unit includes a third grid unit, which is connected to the break, and two adjacent third grid units are connected.

6. The touch film according to any one of claims 1-5, characterized in that, The emitter has multiple emitter modules, the receiver has multiple receiver modules, at least some of the emitter modules and at least some of the receiver modules are alternately arranged, and at least some of the adjacent emitter modules are connected by a receiver module. The touch electrode layer includes a first metal bridge, which electrically connects at least two of the emitter modules.

7. The touch film according to claim 6, characterized in that, The first metal bridge spans one side of the receiving module and is electrically connected to the two adjacent transmitting modules, while the receiving module and the first metal bridge are electrically isolated between the two adjacent transmitting modules.

8. The touch film according to any one of claims 1-5, characterized in that, The emitter has multiple emitter modules, the receiver has multiple receiver modules, at least some of the emitter modules and at least some of the receiver modules are alternately arranged, at least some of the adjacent receiver modules are connected by an emitter module, and the touch electrode layer includes a second metal bridge, which electrically connects at least two of the receiver modules.

9. The touch film according to claim 8, characterized in that, The second metal bridge spans one side of the transmitting module and is electrically connected to two adjacent receiving modules, while the transmitting module and the second metal bridge are electrically isolated between the two adjacent receiving modules.

10. The touch film according to any one of claims 1-5, characterized in that, The emitter and the receiver are not co-layered within the dielectric isolation layer.

11. The touch film according to claim 10, characterized in that, The touch electrode layer includes a first connection electrode, and the emitter electrode has multiple emitter modules. The first connection electrode is electrically connected to at least two of the emitter modules, and the first connection electrode and the emitter electrode are located on the same layer.

12. The touch film according to claim 10, characterized in that, The touch electrode layer includes a second connection electrode, and the receiving electrode has multiple receiving modules. The second connection electrode is electrically connected to at least two of the receiving modules, and the second connection electrode and the receiving electrode are located on the same layer.

13. A touch screen, characterized in that, It includes a light-emitting layer, an encapsulation layer, and a touch film as described in any one of claims 1-12, wherein the touch film, the encapsulation layer, and the light-emitting layer are stacked sequentially.

14. The touch screen according to claim 13, characterized in that, The light-emitting layer includes a pixel definition layer, which includes multiple pixels arranged in a matrix. The multiple pixels and the multiple grid cells correspond one-to-one with each other along the light-emitting direction of the light-emitting layer.

15. The touch screen according to claim 14, characterized in that, The projection of the pixel onto the touch electrode layer along the light emission direction of the light-emitting layer falls entirely into the grid cell corresponding to the pixel, and there is a gap between the side metal line of the grid cell and the projection falling into the grid cell.

16. The touch screen according to claim 13, characterized in that, The spacing between two adjacent pixels is greater than the width of the metal line.

17. The touch screen according to any one of claims 13 to 16, characterized in that, The first plane is a plane perpendicular to the light emission direction of the light-emitting layer. Along the first plane, the distance between the metal line and the pixel edge is in the range of 1 micrometer to 10 micrometers.

18. The touch screen according to any one of claims 13 to 16, characterized in that, The light-emitting layer includes an OLED light-emitting layer.

19. An electronic device, characterized in that, Includes a display screen, the display screen including the touch screen according to any one of claims 13-18.

20. The electronic device according to claim 19, characterized in that, The electronic device includes a foldable phone, the foldable phone includes the display screen, and the display screen is a flexible foldable display screen.

Images