Touch display structure and display device

Abstract

The present disclosure relates to the technical field of display, and particularly relates to a touch display structure and a display device, which are used for optimizing the touch effect and display effect of the display device. The touch display structure comprises a light-emitting substrate and a touch structure arranged on at least one side of the light-emitting substrate. In the touch structure, two adjacent first sub-touch channels in the same first touch channel are electrically connected. Two adjacent second sub-touch channels in the same second touch channel are electrically connected. The touch structure comprises a plurality of metal lines, and the plurality of metal lines cross each other to form a plurality of metal grids. The light-emitting substrate comprises a plurality of sub-pixels. The orthographic projection of the light-emitting area of at least two sub-pixels on a reference surface is located in the orthographic projection range of the same metal grid on the reference surface. The aforementioned touch display structure can improve the light transmittance of the touch structure, optimize the display effect of the display device, reduce the resistance of the touch structure, and ensure the touch effect of the display device.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a touch display structure and display device. Background Technology

[0002] With the continuous development of electronic products, display devices with touch and display functions can realize simple and flexible human-computer interaction, and are therefore widely used.

[0003] AMOLED (Active Matrix Organic Light-Emitting Diode) display devices can achieve full-screen displays, narrow bezels, high resolution, rollable and wearable designs, and foldable designs, making them an important development direction in the field of display technology. Summary of the Invention

[0004] The embodiments of this disclosure provide a touch display structure and a display device, which aim to increase the light transmittance of the touch structure and avoid the touch structure blocking the light emission path of the light-emitting substrate, thereby improving the display effect of the display device; at the same time, the resistance of the touch structure is reduced to avoid the touch effect of the touch structure being reduced due to excessive resistance.

[0005] To achieve the above objectives, the embodiments of this disclosure adopt the following technical solutions:

[0006] On the one hand, a touch display structure is provided, including a light-emitting substrate and a touch structure disposed on at least one side of the light-emitting substrate.

[0007] The touch structure includes a plurality of first touch channels extending along a first direction and a plurality of second touch channels extending along a second direction. The first direction and the second direction intersect each other. The plurality of first touch channels and the plurality of second touch channels are insulated from each other.

[0008] Wherein, at least one first touch channel includes a plurality of adjacent first sub-touch channels, and each first sub-touch channel includes a plurality of first touch electrodes arranged along the first direction and electrically connected in sequence; within the same first touch channel, two adjacent first sub-touch channels are electrically connected. And / or,

[0009] At least one second touch channel includes a plurality of adjacent second sub-touch channels, each second sub-touch channel including a plurality of second touch electrodes arranged along the second direction and electrically connected in sequence; within the same second touch channel, two adjacent second sub-touch channels are electrically connected.

[0010] The touch structure includes multiple metal lines that intersect to form multiple metal grids.

[0011] The light-emitting substrate includes a plurality of sub-pixels, each sub-pixel including a light-emitting area; the orthographic projections of the light-emitting areas of at least two of the sub-pixels onto a reference plane are located within the orthographic projection range of the same metal mesh on the reference plane; the reference plane is the plane on which the light-emitting substrate is located.

[0012] In some embodiments, along the second direction, in the same first touch channel, the first touch electrodes in two adjacent first sub-touch channels are arranged in a one-to-one correspondence; at least one pair of correspondingly arranged first touch electrodes are electrically connected.

[0013] In some embodiments, the first touch channel further includes a first connection portion, through which at least one pair of correspondingly disposed first touch electrodes are electrically connected; the first connection portion extends generally along the second direction.

[0014] In some embodiments, along the first direction, in the same second touch channel, the second touch electrodes in two adjacent second sub-touch channels are arranged in a one-to-one correspondence; at least one pair of corresponding second touch electrodes are electrically connected.

[0015] In some embodiments, the second touch channel further includes a second connection portion, through which at least one pair of correspondingly disposed second touch electrodes are electrically connected; the second connection portion extends substantially along the first direction.

[0016] In some embodiments, the first touch channel includes a plurality of first connecting portions, and the second touch channel includes a plurality of second connecting portions, wherein at least one first connecting portion and at least one second connecting portion intersect.

[0017] In some embodiments, the touch structure includes a first conductive layer, an insulating layer, and a second conductive layer stacked together. The insulating layer is located between the first conductive layer and the second conductive layer, and a via is provided in the insulating layer. The first touch electrode and the second touch electrode are located on the first conductive layer.

[0018] Wherein, the first connection portion is located in the first conductive layer, the second connection portion is located in the second conductive layer, and the second connection portion is electrically connected to the corresponding second touch electrode through the via. Alternatively,

[0019] The second connection portion is located in the first conductive layer, the first connection portion is located in the second conductive layer, and the first connection portion is electrically connected to the corresponding first touch electrode through the via.

[0020] In some embodiments, the first touch channel further includes a third connecting portion, through which any two adjacent first touch electrodes are electrically connected along the first direction. The second touch channel further includes a fourth connecting portion, through which any two adjacent second touch electrodes are electrically connected along the second direction.

[0021] In some embodiments, both the first touch electrode and the second touch electrode are generally rhomboid electrodes. The first touch channel is located in a first rectangular region extending along the first direction, and the second touch channel is located in a second rectangular region extending along the second direction. The rectangular region where the first rectangular region and the second rectangular region intersect is the touch unit region.

[0022] The third connecting portion and the fourth connecting portion intersect to form a first connecting structure. At least two of these first connecting structures are provided within the touch unit area.

[0023] In some embodiments, the first touch channel includes a first connecting portion, and the second touch channel includes a second connecting portion. The first connecting portion and the second connecting portion intersect to form a second connecting structure. At least one second connecting structure is provided in the touch unit area.

[0024] In some embodiments, the touch unit region includes at least one first touch electrode; and / or, the touch unit region includes at least one second touch electrode.

[0025] In some embodiments, the touch unit area includes two first touch electrodes located in the same first sub-touch channel and arranged adjacently, and two second touch electrodes located in the same second sub-touch channel and arranged adjacently; wherein, in the two first touch electrodes, each first touch electrode is arranged adjacent to the two second touch electrodes respectively.

[0026] In some embodiments, the first touch electrode, the second touch electrode, the third connection portion, and the fourth connection portion are all formed of a plurality of the metal meshes.

[0027] In the case where the first touch channel includes a first connecting portion, and / or the second touch channel includes a second connecting portion, the first connecting portion and / or the second connecting portion are formed by a plurality of said metal meshes. In some embodiments, the light-emitting substrate includes a plurality of pixel units, each pixel unit including a plurality of sub-pixels capable of emitting light of different colors.

[0028] The orthographic projection of the light-emitting areas of multiple sub-pixels of the pixel unit onto the reference surface is located within the orthographic projection range of at least one of the metal meshes onto the reference surface; and, among the multiple sub-pixels of the pixel unit, the orthographic projection of the light-emitting areas of at least two sub-pixels onto the reference surface is located within the orthographic projection range of the same metal mesh onto the reference surface.

[0029] In some embodiments, the pixel unit includes one sub-pixel capable of emitting red light, one sub-pixel capable of emitting blue light, and two sub-pixels capable of emitting green light. The light-emitting areas of all sub-pixels in the pixel unit, when projected onto the reference plane, lie within the range of the same metal mesh projected onto the reference plane.

[0030] In some embodiments, the plurality of sub-pixels are arranged in a GGRB pattern.

[0031] In some embodiments, the pixel unit includes a sub-pixel capable of emitting red light, a sub-pixel capable of emitting blue light, and a sub-pixel capable of emitting green light.

[0032] The orthographic projections of the light-emitting areas of all sub-pixels in the pixel unit onto the reference plane lie within the range of the orthographic projection of the same metal mesh onto the reference plane; or,

[0033] In the pixel unit, the orthographic projection of the light-emitting area of ​​the sub-pixel capable of emitting red light onto the reference surface is located within the range of the orthographic projection of one of the metal grids onto the reference surface. The orthographic projections of the light-emitting areas of the sub-pixels capable of emitting blue light and the sub-pixels capable of emitting green light onto the reference surface are both located within the range of the orthographic projection of another metal grid onto the reference surface.

[0034] In some embodiments, the plurality of sub-pixels are arranged in a Real RGB configuration.

[0035] In some embodiments, the plurality of metal meshes include a plurality of first sub-mesh groups and a plurality of second sub-mesh groups, the first sub-mesh groups and the second sub-mesh groups being alternately arranged; the first sub-mesh group includes at least one first sub-mesh, and the second sub-mesh group includes at least one second sub-mesh.

[0036] Wherein, the orthographic projection of the light-emitting area of ​​some sub-pixels in the pixel unit onto the reference surface is located within the orthographic projection range of the same first sub-grid onto the reference surface; the orthographic projection of the light-emitting area of ​​all sub-pixels in the pixel unit onto the reference surface is located within the orthographic projection range of the same second sub-grid onto the reference surface.

[0037] In some embodiments, the metal wires extend in a straight line, and the metal mesh formed by the intersection of multiple metal wires is rectangular. And / or, the metal wires extend in a zigzag line, and the metal mesh formed by the intersection of multiple metal wires is polygonal.

[0038] In some embodiments, multiple metal lines are disposed between the light-emitting areas of at least one pair of adjacent sub-pixels, and the multiple metal lines are electrically connected to each other.

[0039] In some embodiments, the light-emitting substrate includes a plurality of first signal lines extending along the first direction, wherein the orthographic projection of the metal lines on the reference surface at least partially overlaps with the orthographic projection of at least one first signal line on the reference surface; and / or, the light-emitting substrate further includes a plurality of second signal lines extending along the second direction, wherein the orthographic projection of the metal lines on the reference surface at least partially overlaps with the orthographic projection of at least one second signal line on the reference surface.

[0040] In some embodiments, the first signal line includes at least one of an enable signal line, a scan signal line, or an initialization signal line; the second signal line includes at least one of a data line or a power line.

[0041] On the other hand, a display device is provided, including the touch display structure described in any of the foregoing embodiments.

[0042] The touch display structure and display device provided by the embodiments of this disclosure have the following beneficial effects:

[0043] By setting multiple adjacent sub-touch channels within at least one touch channel, and electrically connecting these sub-touch channels within the same touch channel, the number of touch electrodes within each touch channel can be increased without altering the total number of touch channels in the touch structure or increasing the load on the touch chip. This increases the number of connection structures in the entire touch structure used to electrically connect adjacent touch electrodes. Increasing the number of connection structures reduces the overall resistance of the touch structure, ensuring that even after removing some metal lines and improving the light transmittance, the resistance remains within a range sufficient for normal touch functionality, while simultaneously meeting the requirements for high light transmittance and good touch performance. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0045] Figure 1 This is a top view of a display device provided according to some embodiments;

[0046] Figure 2 This is a top view of a light-emitting substrate provided according to some embodiments;

[0047] Figure 3 This is another top view of a light-emitting substrate provided according to some embodiments;

[0048] Figure 4 This is another top view of a light-emitting substrate provided according to some embodiments;

[0049] Figure 5 For along Figure 1 A cross-sectional view along section line A-A' in the diagram;

[0050] Figure 6 This is a top view of a touch display structure provided according to some embodiments;

[0051] Figure 7 for Figure 6 Enlarged view of the structure corresponding to the area containing the dashed box B;

[0052] Figure 8 for Figure 7 An enlarged view of a structure corresponding to the area containing the dashed box C;

[0053] Figure 9 for Figure 7 An enlarged view of another structure corresponding to the area containing the dashed box C;

[0054] Figure 10 for Figure 6 An enlarged view of a structure corresponding to the area containing the dashed box D in the middle;

[0055] Figure 11 for Figure 6 An enlarged view of another structure corresponding to the area containing the dashed box D in the middle;

[0056] Figure 12 for Figure 6 An enlarged view of another structure corresponding to the area containing the dashed box D in the middle;

[0057] Figure 13 This is another top view of a touch display structure provided according to some embodiments;

[0058] Figure 14 for Figure 10 An enlarged view of a structure corresponding to the area containing the dashed box E in the middle;

[0059] Figure 15 For along Figure 14 A cross-sectional view of section line F-F' in the diagram;

[0060] Figure 16 This is another top view of a touch display structure provided according to some embodiments;

[0061] Figure 17 for Figure 10 Enlarged view of the structure corresponding to the area containing the dashed box G;

[0062] Figure 18 for Figure 11 Enlarged view of the structure corresponding to the area containing the dashed box H;

[0063] Figure 19 for Figure 12 Enlarged view of the structure corresponding to the area containing the dashed box I;

[0064] Figure 20 For along Figure 19 A cross-sectional view of section line J-J' in the diagram;

[0065] Figure 21 for Figure 14 Enlarged view of the structure corresponding to the area where the dashed box K is located;

[0066] Figure 22 This is another top view of a touch display structure provided according to some embodiments;

[0067] Figure 23 for Figure 10 An enlarged view of another structure corresponding to the area containing the dashed box E in the middle;

[0068] Figure 24 For along Figure 14 Another cross-sectional view of section line F-F' in the diagram;

[0069] Figure 25 This is another top view of a touch display structure provided according to some embodiments;

[0070] Figure 26 This is another top view of a touch display structure provided according to some embodiments;

[0071] Figure 27This is another top view of a touch display structure provided according to some embodiments;

[0072] Figure 28 This is another top view of a touch display structure provided according to some embodiments;

[0073] Figure 29 This is another top view of a touch display structure provided according to some embodiments;

[0074] Figure 30 This is another top view of a touch display structure provided according to some embodiments;

[0075] Figure 31 This is another top view of a touch display structure provided according to some embodiments;

[0076] Figure 32 This is another top view of a touch display structure provided according to some embodiments. Detailed Implementation

[0077] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0078] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0079] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0080] In describing some embodiments, the terms "electrical connection" and "connection" and their derivatives may be used. For example, the term "electrical connection" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0081] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0082] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0083] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0084] In the description of this disclosure, it should be understood that the terms “center,” “longitudinal,” “lateral,” “length,” “width,” “vertical,” “horizontal,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0085] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0086] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0087] Figure 1 This is a top view of a display device 1000 provided for some embodiments of the present disclosure. The display device 1000 can be any device that displays text or images, whether moving (e.g., video) or stationary (e.g., still images). More specifically, embodiments are contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal digital assistants (PDAs), virtual reality (VR) displays, handheld or portable computers, Global Positioning System (GPS) receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0088] like Figure 1 As shown, the display device 1000 may include a touch display structure 100.

[0089] The touch display structure 100 can be a liquid crystal display (LCD); it can also be an electroluminescent display panel or a photoluminescent display panel. When the touch display structure 100 is an electroluminescent display panel, it can be an organic light-emitting diode (OLED) display panel or a quantum dot light-emitting diode (QLED) display panel. When the touch display structure 100 is a photoluminescent display panel, it can be a quantum dot photoluminescent display panel.

[0090] For example, the display device 1000 may also include a circuit board, a flexible circuit board, or a driver chip.

[0091] The touch display structure 100 has a light-emitting side and a backlight side. The light-emitting side refers to the side of the touch display structure 100 used to display images, and the backlight side refers to the side of the touch display structure 100 that is away from the light-emitting side.

[0092] For example, the driver chip is located on the backlight side of the touch display structure 100 and is electrically connected to the touch display structure 100; the flexible circuit board is located on the backlight side of the touch display structure 100 and is electrically connected to the touch display structure 100. The circuit board, driver chip, and flexible circuit board are used to provide the touch display structure 100 with the data signals required for displaying the image.

[0093] For example, the display device 1000 may further include a front frame and a rear shell. The front frame is disposed on the display side (the side that emits light) of the touch display structure 100 and surrounds the touch display structure 100. The rear shell is disposed on the non-display side (the side opposite to the display side) of the touch display structure 100, and is assembled with the front frame to protect and fix the touch display structure 100.

[0094] A touch display structure includes a light-emitting substrate and a touch structure. The touch structure is located on the light-emitting side of the light-emitting substrate (i.e., the side from which light is emitted). Therefore, the light transmittance of the touch structure affects the light extraction efficiency of the light-emitting substrate. Higher light transmittance of the touch structure results in better propagation of the light emitted from the light-emitting substrate, and consequently, a better display effect. Furthermore, with the development of under-display optical device technology (such as under-display fingerprint sensors), the light transmittance requirements for the touch structure located on the light-emitting side of the light-emitting substrate are becoming increasingly stringent in order to improve the sensitivity of under-display optical devices to reflected light from objects on the screen (such as fingers).

[0095] To address the aforementioned technical problems, this disclosure provides a touch display structure 100.

[0096] The touch display structure 100 includes a light-emitting substrate 20 and a touch structure 10 disposed on at least one side of the light-emitting substrate 20 (see reference). Figure 5 ).

[0097] For example, the light-emitting substrate 20 may include a light-emitting side and a backlight side. The light-emitting side is the side of the light-emitting substrate 20 that emits light, and the backlight side is the side that faces away from the light-emitting side. The touch structure 10 is disposed on the light-emitting side of the light-emitting substrate 20 (see...). Figure 5 ).

[0098] For example, the touch structure 10 can be fabricated separately on a substrate and then superimposed on the light-emitting substrate 20 together with the substrate, or the touch structure 10 can be fabricated directly on the light-emitting substrate 20.

[0099] like Figures 2-4 As shown, the light-emitting substrate 20 includes multiple sub-pixels P.

[0100] For example, each sub-pixel P can emit one of blue light, green light, red light, or white light.

[0101] For example, multiple sub-pixels P may include a first sub-pixel P1, a second sub-pixel P2, and a third sub-pixel P3, wherein the first sub-pixel P1, the second sub-pixel P2, and the third sub-pixel P3 emit light of different colors. For example, the first sub-pixel P1 may emit red light, the second sub-pixel P2 may emit green light, and the third sub-pixel P3 may emit blue light.

[0102] For example, multiple sub-pixels P can be arranged in different ways.

[0103] For example, see Figure 2 Multiple sub-pixels P are arranged in Real RGB. The multiple sub-pixels P are divided into multiple first pixel columns S1 and multiple second pixel columns S2. Both the first pixel columns S1 and the second pixel columns S2 extend along the second direction Y, and the multiple first pixel columns S1 and the multiple second pixel columns S2 are alternately set along the first direction X.

[0104] The first pixel column S1 includes a plurality of first sub-pixels P1 and a plurality of third sub-pixels P3 alternately arranged along the second direction Y, and the second pixel column S2 includes a plurality of second sub-pixels P2 arranged sequentially along the second direction Y.

[0105] For example, see Figure 3Multiple sub-pixels P are arranged in a diamond pattern. Among the multiple sub-pixels P, the first sub-pixel P1 and the second sub-pixel P2 are arranged alternately along the second direction Y, and the first sub-pixel P1 and the second sub-pixel P2 are also arranged alternately along the first direction X; the third sub-pixel P3 is distributed along the first direction X and the second direction Y.

[0106] For example, in the diamond arrangement of multiple sub-pixels P, the sub-pixels P are rectangular, and one diagonal of the rectangle extends along a first direction X, and the other diagonal extends along a second direction Y.

[0107] For example, in the diamond arrangement of multiple sub-pixels P, the sub-pixels P are roughly rectangular, for example, the four corners of the rectangle are rounded corners.

[0108] For example, among the multiple sub-pixels P arranged in a diamond pattern, at least one type of sub-pixel P is generally fan-shaped.

[0109] For example, see Figure 4 Multiple sub-pixels P are arranged in a GGRB pattern. The multiple sub-pixels P are divided into multiple pixel groups S3, and the multiple pixel groups S3 are distributed in an array along the first direction X and the second direction Y.

[0110] Each pixel group S3 includes a third pixel group P3', which includes two third sub-pixels P3 arranged along the first direction X. Each pixel group S3 also includes a second sub-pixel P2 and a first sub-pixel P1, and the third pixel group P3', the second sub-pixel P2, and the first sub-pixel P1 are arranged sequentially along the second direction Y.

[0111] The aforementioned first direction X and second direction Y intersect. For example, the first direction X and the second direction Y can be perpendicular to each other.

[0112] It should be noted that the first direction X can be the horizontal direction of the display device 1000, and the second direction Y can be the vertical direction of the display device 1000; or, the first direction X can be the row direction in the array arrangement of multiple sub-pixels P, and the second direction Y can be the column direction in the array arrangement of multiple sub-pixels P.

[0113] In the various figures of this disclosure, only the first direction X as the row direction and the second direction Y as the column direction are used as examples for illustration. In the embodiments of this disclosure, technical solutions obtained by rotating the figures by a certain angle (e.g., 30 degrees, 45 degrees, or 90 degrees) are also within the protection scope of this disclosure.

[0114] Figure 5 It shows Figure 1 A cross-sectional view along section line A-A'. (See attached image.) Figure 5As shown, the light-emitting substrate 20 includes a substrate 21, and a pixel circuit layer 22 and a light-emitting device layer 23 stacked on the substrate 21.

[0115] The substrate 21 can be a single-layer structure or a multi-layer structure. For example, the substrate 21 may include a flexible base layer and a buffer layer stacked sequentially. Alternatively, the substrate 21 may include multiple flexible base layers and buffer layers arranged alternately. The flexible base layer may be made of polyimide, and the buffer layer may be made of silicon nitride and / or silicon oxide to achieve the effects of blocking water and oxygen and blocking alkaline ions.

[0116] The pixel circuit layer 22 includes an active layer 201, a first gate insulating layer 202, a first gate conductive layer 203, a second gate insulating layer 204, a second gate conductive layer 205, an interlayer dielectric layer 206, a first source / drain conductive layer 207, a passivation layer 208, a first planarization layer 209, a second source / drain conductive layer 210, and a second planarization layer 211, which are sequentially stacked on the substrate 21.

[0117] Optionally, the source / drain conductive layer may be a single layer (e.g., only the first source / drain conductive layer 207 or only the second source / drain conductive layer 210), and correspondingly, the planarization layer may also be a single layer (e.g., only the first planarization layer 209 or only the second planarization layer 211).

[0118] The pixel circuit layer 22 is provided with multiple thin-film transistors (TFTs) and multiple capacitor structures (Cst). Each sub-pixel P includes at least one thin-film transistor (TFT) and at least one capacitor structure (Cst). Figure 5 Only two thin-film transistors (TFTs) and their corresponding two capacitor structures (Cst) are shown as examples.

[0119] The thin-film transistor (TFT) includes a gate (Ta), a source (Tb), a drain (Tc), and an active layer pattern (Td). The source (Tb), drain (Tc), and active layer pattern (Td) are electrically connected.

[0120] The active layer pattern Td is configured to form a channel under the control of the gate Ta, thereby enabling conduction between the source Tb and the drain Tc connected to the active layer pattern Td, thus turning on the thin-film transistor TFT. Exemplarily, the thin-film transistor TFT also includes a portion of a first gate insulating layer 202 located between the layer containing the gate Ta and the layer containing the active layer pattern Td.

[0121] It should be noted that the control electrode of each thin-film transistor (TFT) is the gate Ta of the transistor, the first electrode is one of the source Tb and drain Tc of the TFT, and the second electrode is the other of the source Tb and drain Tc of the TFT. Since the source Tb and drain Tc of the TFT can be structurally symmetrical, their structures can be indistinguishable.

[0122] The capacitor structure Cst includes a first plate Cst1 and a second plate Cst2, wherein the first plate Cst1 is located in the first gate conductive layer 203 and the second plate Cst2 is located in the second gate conductive layer 205.

[0123] The light-emitting device layer 23 includes an anode layer 301, a pixel defining layer 302, a light-emitting functional layer 303, and a cathode layer 304, which are stacked sequentially on the side of the pixel circuit layer 22 away from the substrate 21.

[0124] The light-emitting device layer 23 is provided with a plurality of light-emitting devices L. The light-emitting devices L include an anode L1 located in the anode layer 301, a cathode L2 located in the cathode layer 304, and a light-emitting pattern L3 located in the light-emitting functional layer 303.

[0125] In this configuration, the anode L1, located in the anode layer 301, is configured to transmit a high-level voltage (e.g., a power supply voltage signal VDD), and the cathode L2, located in the cathode layer 304, is configured to transmit a low-level voltage (e.g., a cathode voltage signal VSS). Under the electric field formed by the anode L1 and the cathode L2, the luminescent pattern L3 can emit light.

[0126] For example, in addition to the light-emitting pattern L3, the light-emitting functional layer 303 may also include one or more of the following: an electron transport layer (ETL), an electron injection layer (EIL), a hole transport layer (HTL), and a hole injection layer (HIL).

[0127] For example, the anode L1 can be electrically connected to the source Tb or drain Tc of the thin-film transistor TFT, so that the light-emitting device L can emit light under the control of the thin-film transistor TFT.

[0128] like Figure 5 As shown, the pixel defining layer 302 has multiple openings K, and the light-emitting pattern L3 is at least partially located within the openings K. The light emitted by the light-emitting pattern L3 is emitted to the outside through the openings K.

[0129] like Figure 5As shown, each sub-pixel P includes a light-emitting area K'. The light-emitting area K' is the region defined by the opening K, that is, the effective light-emitting area of ​​the sub-pixel P.

[0130] For example, such as Figure 5 As shown, a support layer 305 may also be provided between the pixel defining layer 302 and the cathode layer 304. The support layer 305 can support the protective film layer to prevent the protective film layer from contacting the anode layer 301 or other traces, which could lead to the breakage of the anode layer 301 or other traces.

[0131] For example, such as Figure 5 As shown, the light-emitting substrate 20 also includes an encapsulation layer 24 disposed on the side of the light-emitting device L away from the substrate 21. The encapsulation layer 24 may include a first encapsulation sublayer, a second encapsulation sublayer, and a third encapsulation sublayer stacked sequentially away from the substrate 21. Exemplarily, the materials of the first and third encapsulation sublayers include inorganic materials, and the material of the second encapsulation sublayer includes organic materials. The first and third encapsulation sublayers have the function of blocking water vapor and oxygen, while the second encapsulation sublayer has a certain degree of flexibility and the function of absorbing water vapor, etc.

[0132] like Figure 6 As shown, the touch structure 10 includes multiple first touch electrodes Tx and multiple second touch electrodes Rx.

[0133] like Figure 7 As shown, the touch structure 10 includes multiple metal lines GL, which intersect to form multiple metal grids G.

[0134] For example, such as Figure 7 As shown, in the touch structure 10, the touch electrodes adopt a metal mesh structure (i.e., including multiple metal meshes G). Compared with using ITO (Indium Tin Oxide) to form planar electrodes as touch electrodes, the touch electrodes with the metal mesh structure have lower resistance and higher sensitivity, which can improve the touch sensitivity of the touch structure 10. Furthermore, the touch electrodes with the metal mesh structure have high mechanical strength, which can reduce the weight of the touch structure 10. When the touch structure 10 is applied to the display device 1000, it can achieve a thinner and lighter display device 1000.

[0135] It should be noted that the touch electrodes of the aforementioned metal mesh structure include each first touch electrode Tx and each second touch electrode Rx in the touch structure 10.

[0136] For example, such as Figure 7As shown, the first touch electrode Tx and the second touch electrode Rx adopt a metal mesh structure. The metal mesh G of the first touch electrode Tx and the second touch electrode Rx can be disposed in the same film layer. The metal mesh G of the first touch electrode Tx is disconnected from the metal mesh G of the second touch electrode Rx, thereby making the first touch electrode Tx and the second touch electrode Rx mutually insulated.

[0137] It should be noted that, Figure 7 The metal mesh G is filled with different patterns to distinguish different touch electrodes. The metal mesh G of the first touch electrode Tx and the second touch electrode Rx can be made of the same material and formed using the same process.

[0138] For example, such as Figure 7 As shown, the first touch electrode Tx and the second touch electrode Rx are rhomboid or approximately rhomboid in shape. "Approximately rhomboid" means that the touch electrodes (i.e., the first touch electrode Tx and the second touch electrode Rx) are generally rhomboid in shape, but are not limited to a standard rhomboid. For example, the boundaries of the touch electrodes can be non-linear (e.g., serrated). In a later embodiment, the touch electrodes are generally rhomboid in shape, but their boundaries are serrated.

[0139] Furthermore, in the embodiments of this disclosure, the electrode pattern shapes of the first touch electrode Tx and the second touch electrode Rx are not limited to rhombus or approximately rhombus, but can also be rectangular, elongated, etc.

[0140] For example, depending on the intersection of the metal wires GL, the shape of the metal mesh G can be roughly hexagonal, rectangular, or irregular polygonal.

[0141] like Figure 5 As shown, the touch structure 10 is disposed on one side of the light-emitting substrate 20.

[0142] like Figure 8 As shown, the orthographic projections of the luminous regions K' of at least two sub-pixels P onto the reference plane N are located within the orthographic projection range of the same metal mesh G onto the reference plane N.

[0143] Wherein, the reference plane N is the plane on which the light-emitting substrate 20 is located. Alternatively, the reference plane N can be a plane parallel to the light-emitting substrate 20.

[0144] For example, the metal line GL is positioned to avoid the light-emitting area K' of the sub-pixel P. That is, the orthographic projection of the metal line GL onto the reference plane N is offset from the orthographic projection of the light-emitting area K' of the sub-pixel P onto the reference plane N. This avoids the metal line GL of the touch structure 10 from blocking the light emitted by the sub-pixel P, thus preventing a decrease in light transmission efficiency.

[0145] like Figure 9 As shown, in related technologies, the orthographic projection of the luminous area K” of a sub-pixel P' onto the reference plane N' lies within the orthographic projection range of a metal mesh G' onto the reference plane N'. That is, one metal mesh G' corresponds to one sub-pixel P'. See also Figure 9 The metal wire GL' has a high distribution density, the light transmittance of the touch structure 10' is low, and the display effect of the touch display structure is poor.

[0146] The light transmittance of the touch structure 10 is related to the distribution density of the metal lines GL. That is, within a unit area, the more metal lines GL are distributed and the smaller the area of ​​the metal grid G, the lower the light transmittance of the touch structure 10. In the touch structure 10 provided in the embodiments of this disclosure, by setting the orthographic projections of the light-emitting areas K' of at least two sub-pixels P onto the reference plane N to be located within the orthographic projection range of the same metal grid G ​​onto the reference plane N, the distribution density of the metal lines GL is reduced and the area of ​​the metal grid G ​​is expanded, thereby improving the light transmittance of the touch structure 10 and optimizing the display effect of the touch display structure 100.

[0147] For example, the distribution density of the metal lines GL can be reduced and the area of ​​the metal mesh G can be increased by removing some of the metal lines GL.

[0148] However, the inventors of this publication have discovered that after removing some of the metal lines GL, reducing the distribution density of the metal lines GL, and expanding the area of ​​the metal grid G, although the light transmittance of the touch structure 10 is greatly improved, the resistance of the touch structure 10 increases sharply, which greatly affects the touch sensitivity of the touch structure 10 and the touch effect.

[0149] To solve this technical problem, in the touch display structure 100 provided in this embodiment, such as... Figure 6 As shown, the touch structure 10 includes a plurality of first touch channels 1 extending along a first direction X, and a plurality of second touch channels 2 extending along a second direction Y.

[0150] The first direction X and the second direction Y intersect. For example, the first direction X and the second direction Y can be perpendicular to each other.

[0151] It should be noted that the aforementioned "first touch channel 1" is a channel composed of multiple first touch electrodes Tx that are electrically connected to each other and simultaneously transmit the same touch signal in the touch structure 10; the aforementioned "second touch channel 2" is a channel composed of multiple second touch electrodes Rx that are electrically connected to each other and simultaneously transmit the same touch signal in the touch structure 10.

[0152] like Figure 6As shown, each touch channel (including the first touch channel 1 and the second touch channel 2) is connected to at least one touch line M. The touch lines M connected to multiple touch channels converge to the bonding area V and are finally electrically connected to the touch processor (not shown in the figure). The touch processor transmits touch signals to the touch channels through the touch lines M to achieve the touch effect of the touch structure 10.

[0153] like Figure 10 As shown, at least one first touch channel 1 includes a plurality of adjacent first sub-touch channels 1a. For example, see [reference needed]. Figure 10 A first touch channel 1 includes two adjacent first sub-touch channels 1a, and a second touch channel 2 includes a second sub-touch channel 2a.

[0154] like Figure 11 As shown, at least one second touch channel 2 includes a plurality of adjacent second sub-touch channels 2a. For example, see [reference needed]. Figure 11 A first touch channel 1 includes a first sub-touch channel 1a, and a second touch channel 2 includes two adjacent second sub-touch channels 2a.

[0155] like Figure 12 As shown, at least one first touch channel 1 includes a plurality of adjacent first sub-touch channels 1a, and at least one second touch channel 2 includes a plurality of adjacent second sub-touch channels 2a. For example, see [reference needed]. Figure 12 A first touch channel 1 includes two adjacent first sub-touch channels 1a, and a second touch channel 2 includes two adjacent second sub-touch channels 2a.

[0156] Based on the aforementioned implementation, in the same first touch channel 1, two adjacent first sub-touch channels 1a are electrically connected; in the same second touch channel 2, two adjacent second sub-touch channels 2a are electrically connected.

[0157] For example, such as Figure 6 , Figure 10 and Figure 12 As shown, in the same first touch channel 1, the two first touch electrodes Tx belonging to two different but adjacent first sub-touch channels 1a are electrically connected, thereby achieving the purpose of electrically connecting two adjacent first sub-touch channels 1a in the same first touch channel 1, so that multiple first sub-touch channels 1a in the same first touch channel 1 transmit the same touch signal.

[0158] For example, such as Figure 13As shown, in the same first touch channel 1, two adjacent first sub-touch channels 1a can be electrically connected to the same touch line M through different sub-touch lines M', thereby achieving the purpose of multiple first sub-touch channels 1a in the same first touch channel 1 transmitting the same touch signal.

[0159] For example, such as Figure 6 , Figure 11 and Figure 12 As shown, in the same first touch channel 1, the two second touch electrodes Rx belonging to two different but adjacent second sub-touch channels 2a are electrically connected, thereby achieving the purpose of electrically connecting two adjacent second sub-touch channels 2a in the same second touch channel 2, so that multiple first sub-touch channels 1a in the same first touch channel 1 transmit the same touch signal.

[0160] For example, such as Figure 13 As shown, in the same second touch channel 2, two adjacent second sub-touch channels 2a can be electrically connected to the same touch line M through different sub-touch lines M', thereby achieving the purpose of transmitting the same touch signal in multiple second sub-touch channels 2a in the same second touch channel 2.

[0161] like Figures 10-12 As shown, the aforementioned first sub-touch channel 1a includes a plurality of first touch electrodes Tx arranged along the first direction X and electrically connected in sequence, and the second sub-touch channel 2a includes a plurality of second touch electrodes Rx arranged along the second direction Y and electrically connected in sequence.

[0162] The multiple first touch channels 1 and the multiple second touch channels 2 are insulated from each other. Furthermore, the multiple first touch channels 1 and the multiple second touch channels 2 intersect each other, thereby allowing the first touch electrode Tx and the second touch electrode Rx to be alternately arranged.

[0163] For example, such as Figures 10-12 As shown, the first touch electrode Tx and the second touch electrode Rx are alternately arranged. Adjacent different touch electrodes (i.e., between the first touch electrode Tx and the second touch electrode Rx) are insulated and can generate mutual capacitance. The mutual capacitance value of these touch electrodes will change after being touched. By detecting the mutual capacitance value, the amount of change of the mutual capacitance value before and after the touch can be determined, the touch position can be judged, and the touch effect of the touch structure 10 can be realized.

[0164] For example, see Figure 7 By disconnecting the metal mesh G of the first touch electrode Tx from the metal mesh G of the second touch electrode Rx, the first touch electrode Tx and the second touch electrode Rx are made mutually insulated.

[0165] Based on the above embodiments, in order to achieve electrical connection between adjacent first touch electrodes Tx in the same first sub-touch channel 1a, electrical connection between adjacent second touch electrodes Rx in the same second sub-touch channel 2a, and to achieve the effect of mutual insulation between the first touch electrodes Tx and the second touch electrodes Rx, at least one pair of touch electrodes (first touch electrode Tx or second touch electrode Rx) are electrically connected through a connection structure (i.e., a structure that crosses and insulates each other) at the intersection of the first touch channel 1 and the second touch channel 2.

[0166] For example, see Figure 14 Two adjacent first touch electrodes Tx arranged along the first direction X are electrically connected through a third connecting part B3, and two adjacent second touch electrodes Rx arranged along the second direction Y are electrically connected through a fourth connecting part B4. The third connecting part B3 and the fourth connecting part B4, which are arranged intersecting each other, are insulated from each other, thereby achieving mutual insulation between the first touch electrodes Tx and the second touch electrodes Rx.

[0167] For example, such as Figure 15 As shown, the touch structure 10 includes a first conductive layer 10A, an insulating layer 10B, and a second conductive layer 10C stacked together, with the insulating layer 10B located between the first conductive layer 10A and the second conductive layer 10C.

[0168] The first touch electrode Tx and the second touch electrode Rx are disposed in the same layer (for example, both are disposed in the first conductive layer 10A or both are disposed in the second conductive layer 10B). The third connection part B3 and the fourth connection part B4 are disposed in different film layers. The film layer where the third connection part B3 is located (for example, the first conductive layer 10A) and the film layer where the fourth connection part B4 is located (for example, the second conductive layer 10C) are insulated from each other by the insulating layer 10B, thereby making the third connection part B3 and the fourth connection part B4 mutually insulated.

[0169] The inventors of this disclosure have discovered that, in the touch structure 10, compared to the locations of the touch electrodes (including the first touch electrode Tx and the second touch electrode Rx), there are two layers of conductive metal at the locations of the connecting structures (e.g., the third connecting portion B3 and the fourth connecting portion B4). The more connecting structures there are, the more corresponding double layers of conductive metal there are, which can result in a lower resistance of the touch structure 10.

[0170] In related technologies, such as Figure 16 As shown, each touch channel (first touch channel 1' or second touch channel 2') has only one sub-touch channel (first sub-touch channel 1a' or second sub-touch channel 2a'). See also... Figure 16 It can be seen that after the first touch channel 1' and the second touch channel 2' intersect, the number of connection structures formed in the entire screen of the touch structure 10' is relatively small.

[0171] In the touch structure 10 provided in this embodiment, by setting multiple adjacent sub-touch channels (including first sub-touch channel 1a and second sub-touch channel 2a) within at least one touch channel (including first touch channel 1 and second touch channel 2), and by electrically connecting multiple sub-touch channels within the same touch channel, the number of touch electrodes (including first touch electrode Tx and second touch electrode Rx) in the touch channel is increased without changing the number of touch channels in the touch structure 10 and avoiding increasing the load on the touch chip. This increases the number of connection structures (e.g., third connection part B3 and fourth connection part B4) for electrically connecting adjacent touch electrodes in the entire touch structure 10 screen. By increasing the number of connection structures for electrically connecting adjacent touch electrodes, the overall resistance of the touch structure 10 can be reduced. This ensures that even after removing part of the metal line GL and increasing the light transmittance of the touch structure 10, the resistance of the touch structure 10 remains within a range that satisfies normal touch function, thus optimizing the touch effect of the touch structure 10.

[0172] In some embodiments, such as Figure 10 and Figure 12 As shown, along the second direction Y, in the same first touch channel 1, the first touch electrodes Tx in two adjacent first sub-touch channels 1a are arranged in a one-to-one correspondence. (See reference...) Figure 12 The first touch channel 1 includes two adjacent first sub-touch channels 1a, which belong to different first sub-touch channels 1a in the same first touch channel 1, and are respectively arranged in a one-to-one correspondence between two first touch electrodes Tx arranged adjacently in the second direction Y.

[0173] See Figure 12 At least one pair of corresponding first touch electrodes Tx are electrically connected. Here, "at least one pair of corresponding first touch electrodes Tx" refers to two first touch electrodes Tx that belong to different first sub-touch channels 1a in the same first touch channel 1 and are adjacent to each other in the second direction Y.

[0174] By setting at least one pair of corresponding first touch electrodes Tx to be electrically connected, multiple first sub-touch channels 1a located in the same first touch channel 1 are electrically connected, thereby enabling multiple first sub-touch channels 1a located in the same first touch channel 1 to transmit the same touch signal, avoiding increasing the number of touch channels, thereby avoiding increasing the load on the touch chip.

[0175] For example, in the same first touch channel 1, only one pair of corresponding first touch electrodes Tx are electrically connected. Alternatively, for example, in the same first touch channel 1, some corresponding first touch electrodes Tx are electrically connected, while some corresponding first touch electrodes Tx are disconnected. Alternatively, for example, in the same first touch channel 1, each pair of corresponding first touch electrodes Tx is electrically connected.

[0176] The first touch electrodes Tx are electrically connected to each other through connecting parts. By controlling the number of electrically connected and correspondingly set first touch electrodes Tx pairs, that is, by controlling the number of connecting parts that electrically connect the corresponding first touch electrodes Tx, the resistance of the touch structure 10 can be controlled. The more connecting parts there are, the more conductive metal in the touch structure 10, and the lower the resistance of the touch structure 10.

[0177] In an exemplary embodiment, such as Figure 17 As shown, the first touch channel 1 further includes a first connecting portion B1, through which at least one pair of correspondingly disposed first touch electrodes Tx are electrically connected. The first connecting portion B1 extends generally along the second direction Y.

[0178] For example, the first touch electrode Tx can be integrally disposed with the first connection portion B1.

[0179] For example, the same first touch channel 1 may include at least one first connecting portion B1, which electrically connects multiple first sub-touch channels 1a located in the same first touch channel 1, thereby enabling the multiple first sub-touch channels 1a located in the same first touch channel 1 to transmit the same touch signal. By controlling the number of first connecting portions B1, the resistance of the touch structure 10 can be controlled; the more first connecting portions B1 there are, the lower the resistance of the touch structure 10.

[0180] In some embodiments, such as Figure 11 and Figure 12 As shown, along the first direction X, in the same second touch channel 2, the second touch electrodes Rx in two adjacent second sub-touch channels 2a are arranged in a one-to-one correspondence. (See reference...) Figure 12 The second touch channel 2 includes two adjacent second sub-touch channels 2a, which belong to different first sub-touch channels 2a in the same first touch channel 2, and are respectively arranged in a one-to-one correspondence between two adjacent second touch electrodes Rx in the first direction X.

[0181] At least one pair of corresponding second touch electrodes Rx are electrically connected. Here, "at least one pair of corresponding second touch electrodes Rx" refers to two second touch electrodes Rx that belong to different second sub-touch channels 2a in the same second touch channel 2 and are adjacent to each other in the first direction X.

[0182] By setting at least one pair of corresponding second touch electrodes Rx to be electrically connected, multiple second sub-touch channels 2a located in the same second touch channel 2 are electrically connected, thereby enabling multiple second sub-touch channels 2a located in the same second touch channel 2 to transmit the same touch signal, avoiding increasing the number of touch channels, and thus avoiding increasing the load on the touch chip.

[0183] For example, in the same second touch channel 2, only one pair of corresponding second touch electrodes Rx are electrically connected. Alternatively, for example, in the same second touch channel 2, some corresponding second touch electrodes Rx are electrically connected, while some corresponding second touch electrodes Rx are disconnected. Alternatively, for example, in the same second touch channel 2, each pair of corresponding second touch electrodes Rx is electrically connected.

[0184] The corresponding second touch electrodes Rx are electrically connected to each other through connecting parts. By controlling the number of electrically connected and correspondingly set second touch electrode Rx pairs, that is, by controlling the number of connecting parts that electrically connect the corresponding second touch electrodes Rx, the resistance of the touch structure 10 can be controlled. The more connecting parts there are, the more conductive metal in the touch structure 10, and the lower the resistance of the touch structure 10.

[0185] In an exemplary embodiment, such as Figure 18 As shown, the second touch channel 2 also includes a second connecting portion B2, through which at least one pair of correspondingly disposed second touch electrodes Rx are electrically connected. The second connecting portion B2 extends substantially along the first direction X.

[0186] For example, the second touch electrode Rx can be integrally disposed with the second connection part B2.

[0187] For example, the same second touch channel 2 may include at least one second connecting portion B2, which electrically connects multiple second sub-touch channels 2a located in the same second touch channel 2, thereby enabling the multiple second sub-touch channels 2a located in the same second touch channel 2 to transmit the same touch signal. By controlling the number of second connecting portions B2, the resistance of the touch structure 10 can be controlled; the more second connecting portions B2 there are, the lower the resistance of the touch structure 10.

[0188] In some embodiments, the first touch channel 1 includes a plurality of first sub-touch channels 1a, and the second touch channel 2 includes a plurality of second sub-touch channels 2a. For example, see [reference needed]. Figure 12 The first touch channel 1 includes two first sub-touch channels 1a, and the second touch channel 2 includes two second sub-touch channels 2a.

[0189] Based on this, refer to Figure 19 At least one first connecting portion B1 and at least one second connecting portion B2 intersect each other. The first connecting portion B1 and the second connecting portion B2 are insulated from each other.

[0190] The resistance of the touch structure 10 can be controlled by controlling the number of the first connecting part B1 and the second connecting part B2. The more first connecting parts B1 and the second connecting part B2 there are, the lower the resistance of the touch structure 10.

[0191] In some embodiments, such as Figure 15 and Figure 20 As shown, the touch structure 10 includes a first conductive layer 10A, an insulating layer 10B, and a second conductive layer 10C stacked together, with the insulating layer 10B located between the first conductive layer 10A and the second conductive layer 10C.

[0192] The first touch electrode Tx and the second touch electrode Rx are located in the first conductive layer 10A.

[0193] In an exemplary embodiment, see Figure 14 The first touch channel 1 includes a third connecting portion B3, which electrically connects any two adjacent first touch electrodes Tx along the first direction X. The second touch channel 2 also includes a fourth connecting portion B4, which electrically connects any two adjacent second touch electrodes Rx along the second direction Y. The third connecting portion B3 and the fourth connecting portion B4 intersect.

[0194] At the intersection of the third connecting part B3 and the fourth connecting part B4, the insulating layer 10B separates the third connecting part B3 and the fourth connecting part B4. This achieves electrical connection of the touch electrodes in the same touch channel while avoiding electrical conduction at the intersection, which would cause crosstalk between the touch signals transmitted on the first touch electrode Tx and the second touch electrode Rx.

[0195] For example, such as Figure 15 As shown, the third connection part B3 is located in the first conductive layer 10A, and the fourth connection part B4 is located in the second conductive layer 10C.

[0196] The third connecting part B3 is integrally formed with the first touch electrode Tx. The insulating layer 10B has a through hole H, and the fourth connecting part B4 is electrically connected to the second touch electrode Rx through the through hole H.

[0197] For example, the third connection portion B3 may also be located in the second conductive layer 10C, and correspondingly the fourth connection portion B4 is located in the first conductive layer 10A.

[0198] The fourth connecting part B4 is integrally formed with the second touch electrode Rx. A through hole H is provided in the insulating layer 10B, through which the third connecting part B3 is electrically connected to the first touch electrode Tx.

[0199] See Figure 10 , Figure 11 and Figure 12 As shown, the number of connection structures formed by the third connection portion B3 and the fourth connection portion B4 in the touch structure 10 is greater than the number of connection structures in related technologies, which can effectively reduce the resistance of the touch structure 10.

[0200] In an exemplary embodiment, see Figure 19 The first touch channel 1 includes multiple first connection portions B1. In the same first touch channel 1, two adjacent first touch electrodes Tx along the second direction Y are electrically connected through the first connection portions B1. The second touch channel 2 also includes a second connection portion B2. In the same second touch channel 2, two adjacent second touch electrodes Rx along the first direction X are electrically connected through the second connection portion B2.

[0201] See Figure 19 At least one first connecting part B1 and at least one second connecting part B2 intersect.

[0202] At the intersection of the first connecting part B1 and the second connecting part B2, the insulating layer 10B is used to separate the first connecting part B1 and the second connecting part B2. This achieves electrical connection of the touch electrodes in the same touch channel while avoiding electrical conduction at the intersection, which would cause crosstalk between the touch signals transmitted on the first touch electrode Tx and the second touch electrode Rx.

[0203] For example, such as Figure 20 As shown, the first connecting part B1 is located in the first conductive layer 10A, and the second connecting part B2 is located in the second conductive layer 10C.

[0204] The first connecting part B1 is integrally formed with the first touch electrode Tx. The insulating layer 10B has a through hole H, and the second connecting part B2 is electrically connected to the second touch electrode Rx through the through hole H.

[0205] For example, the first connection portion B1 may also be located in the second conductive layer 10C, and correspondingly the second connection portion B2 is located in the first conductive layer 10A.

[0206] The second connecting part B2 is integrally formed with the second touch electrode Rx. The insulating layer 10B has a through hole H, through which the first connecting part B1 is electrically connected to the first touch electrode Tx.

[0207] See Figure 10 , Figure 11 and Figure 12As shown, the number of connection structures formed by the first connection portion B1 and the second connection portion B2 in the touch structure 10 is greater than the number of connection structures in related technologies, which can effectively reduce the resistance of the touch structure 10.

[0208] For example, at a position where there is no intersection between the first connecting portion B1 and the second connecting portion B2, the first connecting portion B1 can be disposed in either the first conductive layer 10A or the second conductive layer 10C, and the second connecting portion B2 can be disposed in either the first conductive layer 10A or the second conductive layer 10C.

[0209] For example, relative to the aforementioned second conductive layer 10C, the aforementioned first conductive layer 10A can be disposed close to the light-emitting substrate or can be disposed far away from the light-emitting substrate, and the embodiments disclosed herein do not limit this.

[0210] In some embodiments, such as Figures 10-12 As shown, both the first touch electrode Tx and the second touch electrode Rx are approximately rhomboid electrodes. That is, the shapes of the first touch electrode Tx and the second touch electrode Rx are approximately rhomboid.

[0211] For example, the two diagonals of the rhomboid touch electrode (including the first touch electrode Tx and the second touch electrode Rx) extend along the first direction X and the second direction Y, respectively.

[0212] For example, at least one first touch electrode Tx has four sides that are adjacent to and parallel to the sides of four second touch electrodes Rx.

[0213] The first touch channel 1 is located in a first rectangular area extending along the first direction X, and the second touch channel 2 is located in a second rectangular area extending along the second direction Y.

[0214] It should be noted that the aforementioned "first rectangular area" refers to the area where the first touch electrode Tx is located in the first touch channel 1. Specifically, the first rectangular area is the smallest rectangular area that can encompass all the first touch electrodes Tx in the same first touch channel 1. The aforementioned "second rectangular area" refers to the area where the second touch electrode Rx is located in the second touch channel 2. Specifically, the second rectangular area is the smallest rectangular area that can encompass all the second touch electrodes Rx in the same second touch channel 2.

[0215] like Figures 10-12 As shown, the rectangular area where the first rectangular area and the second rectangular area intersect is the touch unit area J.

[0216] It should be noted that the touch unit area J is the touch point of the touch structure 10. When a finger touches the touch unit area J, the mutual capacitance value of the touch electrode will change, thereby detecting the touch position of the finger and realizing the touch effect of the touch structure 10.

[0217] For example, the touch structure 10 includes a plurality of touch unit regions J distributed in an array along the first direction X and the second direction Y.

[0218] For example, multiple first touch electrodes Tx within each touch unit region J transmit the same touch signal, and multiple second touch electrodes Rx within each touch unit region J transmit the same touch signal.

[0219] In an exemplary embodiment, such as Figures 10-12 As shown, the third connecting part B3 and the fourth connecting part B4 intersect to form a first connecting structure M1. At least two first connecting structures M1 are provided within the touch unit area J.

[0220] For example, such as Figure 10 As shown, a first touch channel 1 includes two adjacent first sub-touch channels 1a, and a second touch channel 2 includes a second sub-touch channel 2a. The touch unit region J includes two first connection structures M1 arranged along the second direction Y.

[0221] For example, such as Figure 11 As shown, a first touch channel 1 includes a first sub-touch channel 1a, and a second touch channel 2 includes two adjacent second sub-touch channels 2a. The touch unit region J includes two first connection structures M1 arranged along the first direction X.

[0222] For example, such as Figure 12 As shown, a first touch channel 1 includes two adjacent first sub-touch channels 1a, and a second touch channel 2 includes two adjacent second sub-touch channels 2a. The touch unit region J includes four first connection structures M1 arrayed along the first direction X and the second direction Y.

[0223] like Figure 16 As shown, in related technologies, only one first connection structure M1' is provided in the touch unit area J' of the touch structure 10'.

[0224] The more first connection structures M1 there are, the more conductive metal in the touch structure 10, and the lower the resistance of the touch structure 10.

[0225] The touch structure 10 provided in this embodiment increases the amount of conductive metal in the touch structure 10 by setting multiple sub-touch channels (including first sub-touch channel 1a and second sub-touch channel 2a) in at least one touch channel (including first touch channel 1 and second touch channel 2), and setting adjacent two sub-touch channels in the same touch channel to be electrically connected, so that at least two first connection structures M1 are provided in a touch unit area J, thereby increasing the amount of conductive metal in the touch structure 10, reducing the overall resistance of the touch structure 10, and ensuring that after removing part of the metal line GL and improving the light transmittance of the touch structure 10, the resistance of the touch structure 10 is still maintained within the range that can meet the normal touch function, thus optimizing the touch effect of the touch structure 10.

[0226] In an exemplary embodiment, such as Figure 12 As shown, a first touch channel 1 includes two adjacent first sub-touch channels 1a, and a second touch channel 2 includes two adjacent second sub-touch channels 2a. The first touch channel 1 includes a first connecting portion B1, and the second touch channel 2 includes a second connecting portion B2. The first connecting portion B1 and the second connecting portion B2 intersect to form a second connecting structure M2. At least one second connecting structure M2 is provided within the touch unit region J.

[0227] The touch structure 10 provided in this embodiment of the present disclosure, by setting multiple first sub-touch channels 1a in the first touch channel 1 and multiple second sub-touch channels 2a in the second touch channel 2, and by setting adjacent and corresponding touch electrodes (including first touch electrode Tx and second touch electrode Rx) belonging to different sub-touch channels (including first sub-touch channel 1a and second sub-touch channel 2a) in the same touch channel (including first touch channel 1 and second touch channel 2) to be electrically connected, allows at least one second connection structure M2 to be provided in a touch unit area J, thereby further increasing the amount of conductive metal in the touch structure 10, reducing the overall resistance of the touch structure 10, and ensuring that after removing part of the metal line GL and improving the light transmittance of the touch structure 10, the resistance of the touch structure 10 is still maintained within the range that can meet the normal touch function, thus optimizing the touch effect of the touch structure 10.

[0228] In some embodiments, such as Figures 10-12 As shown, the touch unit region J includes at least one first touch electrode Tx; and / or, the touch unit region J includes at least one second touch electrode Rx.

[0229] For example, such as Figure 10As shown, the touch unit region J includes a complete second touch electrode Rx, two first connection structures M1 electrically connected to and opposite to the second touch electrode Rx, and two sets of electrode patterns electrically connected to the two first connection structures M1 respectively. Each set of electrode patterns includes half a first touch electrode Tx pattern, half a second touch electrode Rx pattern, and half a first touch electrode Tx pattern arranged sequentially around the first connection structure M1.

[0230] For example, such as Figure 11 As shown, the touch unit region J includes a complete first touch electrode Tx, two first connection structures M1 electrically connected to and opposite to the first touch electrode Tx, and two sets of electrode patterns electrically connected to the two first connection structures M1 respectively. Each set of electrode patterns includes half a second touch electrode Rx pattern, half a first touch electrode Tx pattern, and half a second touch electrode Rx pattern arranged sequentially around the first connection structure M1.

[0231] For example, the touch unit region J includes two first touch electrodes Tx located adjacent to each other in the same first sub-touch channel 1a, and two second touch electrodes Rx located adjacent to each other in the same second sub-touch channel 2a. Each of the two first touch electrodes Tx is adjacent to both of the two second touch electrodes Rx.

[0232] For example, such as Figure 12 As shown, the touch unit region J includes a second connection structure M2, and two complete first touch electrodes Tx and two complete second touch electrodes Rx arranged around the second connection structure M2. The two first touch electrodes Tx are arranged opposite each other, and the two second touch electrodes Rx are arranged opposite each other. The touch unit region J also includes four first connection structures M1 arranged around the second connection structure M2, and four sets of electrode patterns electrically connected to the four first connection structures M1 respectively. Each set of electrode patterns includes half a first touch electrode Tx pattern and half a second touch electrode Rx pattern arranged sequentially around the first connection structure M1.

[0233] In some embodiments, such as Figure 6 and Figure 16 It can be seen that the area of ​​the touch electrodes (including the first touch electrode Tx and the second touch electrode Rx) in the touch structure 10 provided in some embodiments of this disclosure (see...) Figure 6 This is roughly the area of ​​the touch electrode in the relevant technology (see...). Figure 16 0.25 times that of the touch unit region J in the touch structure 10 provided in some embodiments of this disclosure (see...) Figure 6 ), and the area of ​​the touch unit region J' in the related technology (see Figure 16 The size of the touch electrodes is approximately equal to that of the touch structure 10 provided in some embodiments of this disclosure. That is, although the size of the touch electrodes is reduced by increasing the number of connection structures (including the first connection structure M1 and the second connection structure M2), the size and number of the touch unit region J of the touch structure 10 remain approximately unchanged, i.e., the touch points of the touch structure 10 remain unchanged. Therefore, the embodiments provided in this disclosure can reduce the resistance of the touch structure 10, improve touch sensitivity, and optimize the touch effect while approximately maintaining the original touch point distribution.

[0234] In some embodiments, such as Figure 21 As shown, the first touch electrode Tx, the second touch electrode Rx, the third connecting portion B3, and the fourth connecting portion B4 are all metal mesh structures (i.e., including multiple metal meshes G). When the first touch channel 1 includes the first connecting portion B1, and / or the second touch channel 2 includes the second connecting portion B2, the first connecting portion B1 and / or the second connecting portion B2 are metal mesh structures.

[0235] That is, the first touch electrode Tx, the second touch electrode Rx, the first connecting part B1, the second connecting part B2, the third connecting part B3, and the fourth connecting part B4 can each include multiple metal lines GL, which intersect to form a metal mesh G. Thus, while ensuring smooth conduction of the touch signal, the metal mesh G can improve the light transmittance of the touch structure 10, thereby improving the display effect of the display device 1000.

[0236] In some embodiments, such as Figure 22 As shown, at least one pair of adjacent sub-pixels P have multiple metal lines GL disposed between their light-emitting areas K', and the multiple metal lines GL are electrically connected to each other.

[0237] For example, such as Figure 22 As shown, two metal lines GL are correspondingly arranged between the light-emitting areas K' of adjacent sub-pixels P, and these two metal lines GL are electrically connected to each other. That is, the metal lines GL forming the metal grid G ​​are arranged in a winding manner. Through the winding design, the number of metal lines GL can be further increased without affecting the light-emitting effect of the light-emitting substrate 20, thereby reducing the resistance of the touch structure 10 and optimizing the touch effect.

[0238] For example, such as Figure 23 As shown, at least one of the first connecting part B1, the second connecting part B2, the third connecting part B3 and the fourth connecting part B4 can be arranged with metal wires GL in a winding manner, which can further increase the number of metal wires GL, thereby reducing the resistance of the touch structure 10 and optimizing the touch effect.

[0239] In some embodiments, such as Figure 24As shown, the metal line GL of at least one of the first touch electrode Tx, the second touch electrode Rx, the first connecting part B1, the second connecting part B2, the third connecting part B3 and the fourth connecting part B4 can adopt a double-layer structure.

[0240] For example, see Figure 24 The first touch electrode Tx and the second touch electrode Rx adopt a double-layer structure, that is, the first touch electrode Tx and the second touch electrode Rx both include a first conductive line X1 and a second conductive line X2. The first conductive line X1 and the second conductive line X2 are respectively disposed on the first conductive layer 10A and the second conductive layer 10C. The first conductive line X1 and the second conductive line X2 overlap, and the first conductive line X1 and the second conductive line X2 are electrically connected through a through hole Hx that penetrates the insulating layer 10B.

[0241] By setting a double-layer metal line GL, the number of metal lines GL can be further increased, thereby reducing the resistance of the touch structure 10 and optimizing the touch effect.

[0242] Based on the aforementioned embodiments, the light transmittance of the touch structure 10 can be improved by using different distribution patterns of the metal mesh G.

[0243] In some embodiments, the light-emitting substrate 20 includes a plurality of pixel units S, each pixel unit S including a plurality of sub-pixels P capable of emitting light of different colors.

[0244] For example, such as Figure 2 , Figure 25 and Figure 26 As shown, a pixel unit S includes a first sub-pixel P1, a second sub-pixel P2, and a third sub-pixel P3. Multiple pixel units S are arranged in an array along a first direction X and a second direction Y.

[0245] For example, such as Figure 3 and Figure 27 As shown, a pixel unit S includes a first sub-pixel P1, two second sub-pixels P2, and a third sub-pixel P3. The two second sub-pixels P2 are arranged sequentially along a first direction X, and are located on opposite sides of the line connecting the first sub-pixel P1 and the third sub-pixel P3. Multiple pixel units S are arranged in an array along a direction parallel to the diagonal of the light-emitting substrate 20.

[0246] For example, such as Figure 4 and Figure 28 As shown, a pixel unit S includes a first sub-pixel P1, two second sub-pixels P2 and a third sub-pixel P3, and the two second sub-pixels P2 are arranged sequentially along the second direction Y.

[0247] Based on the aforementioned multiple distribution methods of pixel unit S, the orthographic projection of the light-emitting area K' of multiple sub-pixels P of pixel unit S onto the reference plane N lies within the orthographic projection range of at least one metal grid G ​​onto the reference plane N. Furthermore, among the multiple sub-pixels P of pixel unit S, at least two sub-pixels P have their light-emitting area K's orthographic projection onto the reference plane N lying within the orthographic projection range of the same metal grid G ​​onto the reference plane N.

[0248] That is, a pixel unit S can correspond to at least one metal grid G, and one of the metal grids G corresponds to at least two sub-pixels P.

[0249] By setting one pixel unit S to correspond to at least one metal grid G, and one of the metal grids G to correspond to at least two sub-pixels P, it can be ensured that one metal grid G ​​can provide light from at least two sub-pixels P. Compared with the case in related technologies where one metal grid G ​​corresponds to one sub-pixel P, the area of ​​the metal grid G ​​of the touch structure 10 in the touch display structure 100 provided in this disclosure embodiment is larger, so the light transmittance of the touch structure 10 is higher, which can improve the display effect of the touch display structure 100. At the same time, the resistance of the touch structure 10 is smaller, which can simultaneously satisfy the light transmittance effect and the touch effect of the touch structure 10.

[0250] For example, when a pixel unit S includes a sub-pixel P that can emit red light, a sub-pixel P that can emit blue light, and a sub-pixel P that can emit green light, the orthographic projection of the light-emitting area K' of all sub-pixels P in pixel unit S onto the N reference plane is located within the range of the orthographic projection of the same metal grid G ​​onto the reference plane N.

[0251] For example, see Figure 25 Multiple sub-pixels P are arranged in Real RGB. The orthographic projection of the light-emitting areas K' of multiple sub-pixels P of a pixel unit S onto the reference plane N lies within the orthographic projection range of the same metal mesh G onto the reference plane N.

[0252] That is, three sub-pixels P can be set within a metal grid G, ensuring that light from three sub-pixels P can be emitted from a metal grid G. Compared with the case in related technologies where one metal grid G ​​corresponds to one sub-pixel P, the area of ​​the metal grid G ​​of the touch structure 100 provided in this embodiment is larger, resulting in higher light transmittance of the touch structure 10 and improving the display effect of the touch display structure 100.

[0253] For example, when a pixel unit S includes a sub-pixel P that can emit red light, a sub-pixel P that can emit blue light, and a sub-pixel P that can emit green light, the orthographic projection of the light-emitting area K' of the sub-pixel P that can emit red light onto the reference plane N is located within the range of the orthographic projection of a metal grid G ​​onto the reference plane N. The orthographic projections of the light-emitting areas K' of the sub-pixel P that can emit blue light and the light-emitting areas K' of the sub-pixel P that can emit green light onto the reference plane are both located within the range of the orthographic projection of another metal grid G ​​onto the reference plane N.

[0254] For example, see Figure 26 Multiple sub-pixels P are arranged in Real RGB. The orthographic projection of the light-emitting area K' of multiple sub-pixels P of a pixel unit S onto the reference plane N lies within the orthographic projection range of two metal grids G onto the reference plane N. Among the multiple sub-pixels P of the pixel unit S, the orthographic projections of the light-emitting area K' of the first sub-pixel P1 and the light-emitting area K' of the third sub-pixel P3 onto the reference plane N lie within the orthographic projection range of the same metal grid G ​​onto the reference plane N, and the orthographic projection of the light-emitting area K' of the second sub-pixel P2 onto the reference plane N lies within the orthographic projection range of another metal grid G ​​onto the reference plane N.

[0255] That is, within the two metal grids G corresponding to a pixel unit S, one metal grid G ​​is provided with one sub-pixel P (e.g., the second sub-pixel P2), and the other metal grid G ​​is provided with two sub-pixels P (e.g., the first sub-pixel P1 and the third sub-pixel P3). This ensures that at least one metal grid G ​​can allow light from two sub-pixels P to be emitted. Compared to the case where one metal grid G ​​corresponds to one sub-pixel P in related technologies, the area of ​​the metal grid G ​​in the touch display structure 100 provided in this disclosure embodiment is larger, resulting in higher light transmittance of the touch display structure 10 and improving the display effect of the touch display structure 100.

[0256] The inventors of this disclosure have conducted a simulation analysis on the touch structure 10 provided in the embodiments of this disclosure, and the analysis results are as follows:

[0257] With each metal grid G ​​corresponding to a sub-pixel P, the aperture ratio of the touch structure 10 is approximately 10.8%, or the proportion of the metal line GL is approximately 10% to 20%.

[0258] In a pixel unit S, where one metal grid G ​​contains one sub-pixel P and the other metal grid G ​​contains two sub-pixels P, the aperture ratio of the touch structure 10 can reach 15.5%, or the proportion of the metal line GL is approximately 10% to 15%.

[0259] With three sub-pixels P corresponding to a metal grid G, the aperture ratio of the touch structure 10 can reach 19.2%, or the proportion of the metal line GL is approximately 5% to 15%.

[0260] When a metal grid G ​​corresponds to more than three sub-pixels P, the proportion of the metal line GL of the touch structure 10 is approximately 0% to 5%.

[0261] Among them, "the aperture ratio of the touch structure 10" is the proportion of the area of ​​the metal mesh G to the total area of ​​the touch structure 10.

[0262] Based on the above analysis results, it can be seen that by setting a metal mesh G to correspond to at least two sub-pixels P, the light transmittance of the touch structure 10 can be significantly improved, effectively enhancing the display effect of the touch display structure 100.

[0263] Based on this, in order to more intuitively demonstrate the optimization of the display effect of the aforementioned touch structure 10 on the touch display structure 100, the inventors of this disclosure conducted a simulation analysis of the touch display structure 100. In this simulation analysis, except for the different aperture ratio of the touch structure 10, the other structures of the touch display structure 100, such as the materials, models, and stacking structures of the polarizer, optical adhesive, or glass cover, were all the same. The analysis results are as follows:

[0264] With each metal grid G ​​corresponding to one sub-pixel P, the screen light transmittance of the touch display structure 100 is approximately 2.0%.

[0265] In a pixel unit S, where one metal grid G ​​contains one sub-pixel P and the other metal grid G ​​contains two sub-pixels P, the screen light transmittance of the touch display structure 100 is approximately 2.9%.

[0266] With three sub-pixels P corresponding to a metal mesh G, the screen light transmittance of the touch display structure 100 is approximately 3.6%.

[0267] Based on the above analysis results, it can be seen that by setting a metal mesh G to correspond to at least two sub-pixels P, the screen light transmittance of the touch display structure 100 is effectively improved, thereby optimizing the display effect of the touch display structure 100.

[0268] For example, when a pixel unit S includes a sub-pixel P that can emit red light, a sub-pixel P that can emit blue light, and two sub-pixels P that can emit green light, the orthographic projection of the light-emitting area K' of all sub-pixels P in pixel unit S onto the reference plane N is located within the range of the orthographic projection of the same metal grid G ​​onto the reference plane N.

[0269] For example, see Figure 27 and Figure 28 Multiple sub-pixels P are arranged in a diamond or GGRB pattern. The orthographic projection of the luminous area K' of multiple sub-pixels P in a pixel unit S onto the reference plane N lies within the orthographic projection range of a metal grid G ​​onto the reference plane N.

[0270] That is, four sub-pixels P can be set within a metal grid G, ensuring that light from four sub-pixels P can be emitted from a metal grid G. Compared with the case in related technologies where one metal grid G ​​corresponds to one sub-pixel P, the area of ​​the metal grid G ​​of the touch structure 100 provided in this embodiment is larger, resulting in higher light transmittance of the touch structure 10 and improving the display effect of the touch display structure 100.

[0271] In some embodiments, such as Figure 29 As shown, the multiple metal meshes G include multiple first sub-mesh groups Ga and multiple second sub-mesh groups Gb, with the first sub-mesh groups Ga and the second sub-mesh groups Gb alternately arranged; the first sub-mesh group Ga includes at least one first sub-mesh G1, and the second sub-mesh group Gb includes at least one second sub-mesh G2.

[0272] Among them, the orthographic projection of the light-emitting area K' of some sub-pixels P in the multiple sub-pixels P of pixel unit S onto the reference plane N is located within the range of the orthographic projection of the same first sub-grid G1 onto the reference plane; the orthographic projection of the light-emitting area K' of all sub-pixels P in another pixel unit S onto the reference plane N is located within the range of the orthographic projection of the same second sub-grid G2 onto the reference plane N.

[0273] For example, such as Figure 29 As shown, multiple sub-pixels P are arranged in Real-RGB.

[0274] The first sub-mesh group Ga and the second sub-mesh group Gb are alternately arranged along the first direction X and the second direction Y. The first sub-mesh group Ga includes three first sub-mesh groups G1, and the second sub-mesh group Gb includes one second sub-mesh group G2.

[0275] Among them, the three first sub-grids G1 in the same first sub-grid group Ga are all set to correspond one-to-one with the light-emitting areas K' of the three sub-pixels P in the same pixel unit S, and the second sub-grid G2 is set to correspond to the light-emitting areas K' of all the sub-pixels P in another pixel unit S.

[0276] For example, such as Figure 30 As shown, the multiple metal meshes G also include multiple third sub-mesh groups Gc. The first sub-mesh group Ga, the third sub-mesh group Gc, and the second sub-mesh group Gb are alternately arranged. The third sub-mesh group Gc includes at least one third sub-mesh G3.

[0277] Specifically, the orthographic projection of the light-emitting area K' of some sub-pixels P in a pixel unit S onto the reference plane N is located within the orthographic projection range of the same first sub-grid G1 onto the reference plane; the orthographic projection of the light-emitting area K' of another portion (excluding the aforementioned sub-pixels P) of sub-pixels P in a pixel unit S onto the reference plane N is located within the orthographic projection range of the same third sub-grid G3 onto the reference plane; and the orthographic projection of the light-emitting area K' of all sub-pixels P in another pixel unit S onto the reference plane N is located within the orthographic projection range of the same second sub-grid G2 onto the reference plane N.

[0278] For example, such as Figure 30 As shown, multiple sub-pixels P are arranged in Real-RGB.

[0279] The first sub-mesh group Ga, the third sub-mesh group Gc, and the second sub-mesh group Gb are alternately arranged along the first direction X and the second direction Y. The first sub-mesh group Ga includes three first sub-mesh groups G1, which are arranged sequentially along the second direction Y; the third sub-mesh group Gc includes three third sub-mesh groups G3, which are arranged sequentially along the second direction Y; and the second sub-mesh group Gb includes three second sub-mesh groups G2, which are arranged sequentially along the second direction Y.

[0280] In the same pixel unit S, among the three sub-pixels P, the light-emitting area K' of one sub-pixel P is set to correspond with a first sub-grid G1, and the light-emitting areas K' of the other two sub-pixels P are set to correspond with a third sub-grid G3. In another pixel unit S, the light-emitting areas K' of all sub-pixels P are set to correspond with a second sub-grid G2.

[0281] By alternating the first sub-grid group Ga and the second sub-grid group Gb, or by alternating the first sub-grid group Ga, the third sub-grid group Gc, and the second sub-grid group Gb, the distribution density of the metal line GL at different locations can be flexibly controlled. This allows for an adaptive reduction in the distribution density of the metal line GL at locations with high light transmittance requirements, resulting in greater design flexibility.

[0282] For example, more second sub-grids G2 can be set at the location of the touch structure 10 corresponding to the optical fingerprint sensor, thereby improving the light transmittance of the touch structure 10 at that location and optimizing the sensing sensitivity of the optical fingerprint sensor.

[0283] Based on the aforementioned embodiments, when multiple design methods are combined, such as setting one sub-pixel P for one metal grid G, setting two sub-pixels P for one metal grid G, setting three sub-pixels P for one metal grid G, or setting more than three sub-pixels P for one metal grid G, the proportion of the metal line GL of the touch structure 10 is approximately 0% to 20%.

[0284] In some embodiments, the light transmittance of the touch structure 10 can be improved by reducing the width of the metal line GL and increasing the area of ​​the metal mesh G.

[0285] In some embodiments, such as Figure 22 , Figure 23 and Figure 24 As shown, the metal line GL can extend in a straight line.

[0286] In some embodiments, such as Figure 25 As shown, the metal line GL can extend in a zigzag pattern.

[0287] In some embodiments, such as Figure 22 , Figure 23 and Figure 24 As shown, the shape of the metal mesh G can be a regular rectangle.

[0288] In some embodiments, such as Figure 25 As shown, the shape of the metal mesh G can also be a polygon.

[0289] In some embodiments, such as Figures 22-25 As shown, the metal line GL extends along the boundary of the light-emitting area K' of the sub-pixel P, and the metal line GL is located between the light-emitting areas K' of adjacent sub-pixels P. That is, the metal grid G ​​corresponds to the light-emitting area K' of the sub-pixel P, avoiding the metal line GL from blocking the light-emitting path of the sub-pixel P, improving the light-emitting efficiency of the sub-pixel P, and thus improving the display effect of the touch display structure 100.

[0290] In some embodiments, such as Figure 31 As shown, the light-emitting substrate 20 includes a plurality of first signal lines Q1 extending along the first direction X. The orthographic projection of the metal line GL on the reference plane N at least partially overlaps with the orthographic projection of at least one of the first signal lines Q1 on the reference plane N.

[0291] For example, the orthographic projection of the metal line GL onto the reference plane N has a greater than 50% overlap with the orthographic projection of at least one first signal line Q1 onto the reference plane N.

[0292] In some embodiments, see Figure 5The light-emitting substrate 20 includes a substrate 21, an active layer 201, a first gate insulating layer 202, a first gate conductive layer 203, a second gate insulating layer 204, a second gate conductive layer 205, an interlayer dielectric layer 206, a first source / drain conductive layer 207, a passivation layer 208, a first planarization layer 209, and a second source / drain conductive layer 210, which are stacked sequentially.

[0293] See Figure 31 and Figure 32 By etching and stacking the patterns in the aforementioned multiple film layers one by one, multiple thin-film transistors (TFTs) can be formed in each sub-pixel P. For example, see [reference needed]. Figure 31 and Figure 32 Within a sub-pixel P, a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, and a seventh transistor T7 can be formed.

[0294] The first signal line Q1 can be disposed in at least one of the first gate conductive layer 203 or the second gate conductive layer 205.

[0295] For example, such as Figure 31 As shown, the aforementioned plurality of first signal lines Q1 may include an enable signal line Q11. The orthographic projection of the metal line GL onto the reference plane N at least partially overlaps with the orthographic projection of at least one enable signal line Q11 onto the reference plane N.

[0296] See Figure 31 The enable signal line Q11 is disposed on the first gate conductive layer 203. The overlapping portion of the enable signal line Q11 and the active layer 201 forms the gate of the fifth transistor T5 and the gate of the sixth transistor T6, thereby providing an enable signal to the fifth transistor T5 and the sixth transistor T6.

[0297] For example, such as Figure 31 As shown, the aforementioned plurality of first signal lines Q1 may further include scan signal lines Q12. The orthographic projection of the metal line GL onto the reference plane N at least partially overlaps with the orthographic projection of at least one scan signal line Q12 onto the reference plane N.

[0298] See Figure 31 The scan signal line Q12 is located on the first gate conductive layer 203.

[0299] like Figure 31 As shown, optionally, the scan signal line Q12 may include a first scan signal line Q121, a second scan signal line Q122, and a third scan signal line Q123.

[0300] The overlapping portion of the first scan signal line Q121 and the active layer 201 forms the gate of the first transistor T1, thereby providing a reset signal to the first transistor T1.

[0301] The overlapping portion of the second scan signal line Q122 and the active layer 201 forms the gate of the second transistor T2 and the gate of the fourth transistor T4, thereby providing the first scan signal to the second transistor T2 and the fourth transistor T4.

[0302] The overlapping portion of the third scan signal line Q123 and the active layer 201 forms the gate of the seventh transistor T7, thereby providing the second scan signal to the seventh transistor T7.

[0303] The orthographic projection of the metal line GL onto the reference plane N can at least partially overlap with the orthographic projection of at least one of the first scan signal line Q121, the second scan signal line Q122, or the third scan signal line Q123 onto the reference plane N. For example, see [reference]. Figure 31 The orthographic projection of the metal line GL onto the reference plane N at least partially overlaps with the orthographic projection of the first scan signal line Q121 onto the reference plane N.

[0304] For example, such as Figure 32 As shown, the aforementioned plurality of first signal lines Q1 may further include an initialization signal line Q13. The orthographic projection of the metal line GL onto the reference plane N at least partially overlaps with the orthographic projection of at least one initialization signal line Q13 onto the reference plane N.

[0305] See Figure 32 The initialization signal line Q13 is located on the second gate conductive layer 205.

[0306] like Figure 32 As shown, optionally, the initialization signal line Q13 may include a first initialization signal line Q131 and a second initialization signal line Q132.

[0307] The first initialization signal line Q131 is configured to be electrically connected to the first transistor T1 to provide the first initialization signal to the first transistor T1.

[0308] The second initialization signal line Q132 is configured to be electrically connected to the seventh transistor T7, providing the second initialization signal to the seventh transistor T7.

[0309] The orthographic projection of the metal line GL onto the reference plane N may at least partially overlap with the orthographic projection of at least one of the first initialization signal line Q131 or the second initialization signal line Q132 onto the reference plane N. For example, see [reference]. Figure 32 The orthographic projection of the metal line GL onto the reference plane N at least partially overlaps with the orthographic projection of the second initialization signal line Q132 onto the reference plane N.

[0310] By setting the orthographic projection of the metal line GL on the reference plane N to at least partially overlap with the orthographic projection of at least one first signal line Q1 on the reference plane N, the position of the metal line GL extending along the first direction X in the touch structure 10 can be limited by the first signal line Q1 in the light-emitting substrate 20, so as to avoid the metal line GL extending along the first direction X from blocking the light-emitting path of the sub-pixel P, thereby improving the light-emitting efficiency of the sub-pixel P and improving the display effect of the touch display structure 100.

[0311] Especially in embodiments where under-display optical devices are provided in the touch display structure 100, such as an under-display optical fingerprint sensor, after a finger touches the screen, the reflected light from the finger needs to pass through the touch structure 10 and the light-emitting substrate 20 in sequence before the fingerprint information can be transmitted to the optical fingerprint sensor located on the side of the light-emitting substrate 20 away from the touch structure 10 to achieve fingerprint detection.

[0312] By setting the orthographic projection of the metal line GL on the reference plane N in the area where the under-display optical device is located to at least partially overlap with the orthographic projection of at least one first signal line Q1 on the reference plane N, the distribution density of traces (including the metal line GL and the first signal line Q1) extending along the first direction X in the area where the under-display optical device is located can be reduced, avoiding the traces extending along the first direction X from blocking the transmission path of reflected light, effectively improving the light transmittance of the area where the under-display optical device is located, thereby improving the realization effect of the optical device.

[0313] In some embodiments, such as Figure 31 and Figure 32 As shown, the light-emitting substrate 20 also includes a plurality of second signal lines Q2 extending along the second direction Y. The orthographic projection of the metal line GL on the reference plane N at least partially overlaps with the orthographic projection of at least one of the second signal lines Q2 on the reference plane N.

[0314] For example, the orthographic projection of the metal line GL onto the reference plane N has a greater than 50% overlap with the orthographic projection of at least one second signal line Q2 onto the reference plane N.

[0315] In some embodiments, the second signal line Q2 may be disposed in at least one of the first source / drain conductive layer 207 or the second source / drain conductive layer 210.

[0316] For example, see Figure 31 The aforementioned multiple second signal lines Q2 include a power signal line Q21. The power signal line Q21 is disposed on the second source / drain conductive layer 210.

[0317] The power signal line Q21 extends along the second direction Y and is configured to provide a power signal to the sub-pixel P, thereby enabling the emission control of the sub-pixel P.

[0318] See Figure 31The orthographic projection of the metal line GL onto the reference plane N at least partially overlaps with the orthographic projection of the power signal line Q21 onto the reference plane N.

[0319] For example, see Figure 32 The aforementioned multiple second signal lines Q2 include a data signal line Q22. The data signal line Q22 is disposed on the second source / drain conductive layer 210.

[0320] The data signal line Q22 extends along the second direction Y and is configured to provide a data signal to the sub-pixel P, thereby enabling the emission control of the sub-pixel P.

[0321] See Figure 32 The orthographic projection of the metal line GL onto the reference plane N at least partially overlaps with the orthographic projection of the data signal line Q22 onto the reference plane N.

[0322] By setting the orthographic projection of the metal line GL on the reference plane N to at least partially overlap with the orthographic projection of at least one second signal line Q2 on the reference plane N, the position of the metal line GL extending along the second direction Y in the touch structure 10 can be limited by the second signal line Q2 in the light-emitting substrate 20, so as to avoid the metal line GL extending along the second direction Y from blocking the light-emitting path of the sub-pixel P, thereby improving the light-emitting efficiency of the sub-pixel P and thus improving the display effect of the touch display structure 100.

[0323] Especially in embodiments where under-display optical devices are provided in the touch display structure 100, such as under-display optical fingerprint sensors, by setting the orthographic projection of the metal line GL on the reference surface N in the area where the under-display optical device is provided to at least partially overlap with the orthographic projection of at least one second signal line Q2 on the reference surface N, the distribution density of traces (including the metal line GL and the second signal line Q2) extending along the second direction Y in the area where the under-display optical device is provided can be reduced, avoiding the traces extending along the second direction Y from blocking the transmission path of reflected light, effectively improving the light transmittance of the area where the under-display optical device is provided, thereby improving the implementation effect of the optical device.

[0324] In some embodiments, such as Figure 31 and Figure 32 As shown, the orthographic projection of the metal line GL extending along the first direction X onto the reference plane N at least partially overlaps with the orthographic projection of at least one first signal line Q1 onto the reference plane N, and the orthographic projection of the metal line GL extending along the second direction Y onto the reference plane N at least partially overlaps with the orthographic projection of at least one second signal line Q2 onto the reference plane N.

[0325] By setting the orthographic projection of the metal line GL extending along the first direction X on the reference surface N to at least partially overlap with the orthographic projection of at least one second signal line Q2 on the reference surface N, and the orthographic projection of the metal line GL extending along the second direction Y on the reference surface N to at least partially overlap with the orthographic projection of at least one second signal line Q2 on the reference surface N, that is, the metal line GL of the metal grid G ​​overlaps with the signal lines (including the first signal line Q1 and the second signal line Q2) in the light-emitting substrate 20, so that the position of the metal grid G ​​in the touch structure 10 can be defined by the signal lines in the light-emitting substrate 20, avoiding the metal grid G ​​from blocking the light-emitting path of the sub-pixel P, improving the light-emitting efficiency of the sub-pixel P, and thus improving the display effect of the touch display structure 100.

[0326] Especially in embodiments where under-display optical devices are set in the touch display structure 100, such as under-display optical fingerprint sensors, by setting the orthographic projection of a metal line GL extending along the first direction X on the reference surface N in the area where the under-display optical device is located, which at least partially overlaps with the orthographic projection of at least one second signal line Q2 on the reference surface N, and the orthographic projection of the metal line GL extending along the second direction Y on the reference surface N, which at least partially overlaps with the orthographic projection of at least one second signal line Q2 on the reference surface N, the distribution density of traces (including metal line GL and first signal line Q1 and second signal line Q2) in the area where the under-display optical device is located can be reduced, avoiding the traces from blocking the transmission path of reflected light, effectively improving the light transmittance of the area where the under-display optical device is located, thereby improving the implementation effect of the optical device.

[0327] The inventors of this disclosure have analyzed the touch display structure 100 provided in some embodiments of this disclosure.

[0328] Experimental group: The touch structure 10 provided in this embodiment has a metal grid G ​​corresponding to three sub-pixels P. In the touch structure 10, a first touch channel 1 includes two adjacent first sub-touch channels 1a, and a second touch channel 2 includes two adjacent second sub-touch channels 2a. That is, four first connection structures M1 are provided in the touch unit area J.

[0329] Control group: In related technologies, one metal grid of the touch structure corresponds to one sub-pixel, and each touch channel includes only one sub-touch channel.

[0330] The analysis results are as follows:

[0331] Table 1

[0332] control group experimental group rate of change Initial mutual capacitance (pF) 1.08 0.91 -15.74％ Touch mutual capacitance (pF) 1.01 0.80 -20.79％ Change in mutual capacitance (pF) 0.07 0.11 +57.14％ The proportion of changes in mutual capacitance 6.48％ 12.09％ Self-capacitance (pF) of the first touch electrode 10.90 10.21 -6.33％ Self-capacitance (pF) of the second touch electrode 13.35 11.22 -15.96％ Resistance (Ω) of the first touch electrode 15.51 21.46 +38.36％ Resistance (Ω) of the second touch electrode 14.43 21.90 +51.76％

[0333] The "initial mutual capacitance value" is the mutual capacitance value of the touch structure 10 when the finger is not touching the screen. The "touch mutual capacitance value" is the mutual capacitance value of the touch structure 10 when the finger touches the screen. The "change in mutual capacitance value" is the difference between the initial mutual capacitance value and the touch mutual capacitance value. The "percentage of change in mutual capacitance value" is the percentage of the change in mutual capacitance value relative to the initial mutual capacitance value.

[0334] The higher the proportion of the change in mutual capacitance value, the stronger the sensing ability of the touch structure 10 when the finger touches the screen, that is, the higher the touch sensitivity of the touch structure 10 and the better the touch effect.

[0335] As shown in Table 1, in the touch display structure 100 provided in this embodiment, the resistance of the touch structure 10 is only slightly increased, while the percentage change in the mutual capacitance value of the touch structure 10 is nearly doubled compared to touch structures in related technologies, meaning that the touch sensitivity is greatly improved.

[0336] In summary, the touch display structure 100 provided in this embodiment can improve the light transmittance of the touch structure 10 (i.e., one metal grid G ​​corresponds to at least two sub-pixels P) while maintaining the resistance of the touch structure 10 at a level that can achieve normal touch effect, thus taking into account both display effect and touch effect.

[0337] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A touch display structure, characterized in that, include: A light-emitting substrate and a touch structure disposed on at least one side of the light-emitting substrate; The touch structure includes a plurality of first touch channels extending along a first direction and a plurality of second touch channels extending along a second direction, the first direction and the second direction intersecting each other; the plurality of first touch channels and the plurality of second touch channels are insulated from each other; Wherein, at least one first touch channel includes a plurality of adjacent first sub-touch channels, and each first sub-touch channel includes a plurality of first touch electrodes arranged along the first direction and electrically connected in sequence; within the same first touch channel, two adjacent first sub-touch channels are electrically connected; and / or, At least one second touch channel includes a plurality of adjacent second sub-touch channels, each second sub-touch channel including a plurality of second touch electrodes arranged along the second direction and electrically connected in sequence; within the same second touch channel, two adjacent second sub-touch channels are electrically connected. The touch structure includes multiple metal lines that intersect to form multiple metal grids; The light-emitting substrate includes a plurality of sub-pixels, each sub-pixel including a light-emitting area; the orthographic projections of the light-emitting areas of at least two of the sub-pixels onto a reference plane are located within the orthographic projection range of the same metal mesh on the reference plane; the reference plane is the plane in which the light-emitting substrate is located; The light-emitting substrate includes multiple pixel units, and each pixel unit includes multiple sub-pixels capable of emitting light of different colors; The orthographic projection of the light-emitting areas of multiple sub-pixels of the pixel unit onto the reference surface is located within the orthographic projection range of at least one of the metal meshes onto the reference surface; and, among the multiple sub-pixels of the pixel unit, the orthographic projection of the light-emitting areas of at least two sub-pixels onto the reference surface is located within the orthographic projection range of the same metal mesh onto the reference surface.

2. The touch display structure according to claim 1, characterized in that, Along the second direction, in the same first touch channel, the first touch electrodes in two adjacent first sub-touch channels are arranged in a one-to-one correspondence; at least one pair of corresponding first touch electrodes are electrically connected.

3. The touch display structure according to claim 2, characterized in that, The first touch channel further includes a first connecting portion, through which at least one pair of correspondingly disposed first touch electrodes are electrically connected; the first connecting portion extends generally along the second direction.

4. The touch display structure according to claim 1, characterized in that, Along the first direction, in the same second touch channel, the second touch electrodes in two adjacent second sub-touch channels are arranged in a one-to-one correspondence; at least one pair of corresponding second touch electrodes are electrically connected.

5. The touch display structure according to claim 4, characterized in that, The second touch channel further includes a second connection portion, through which at least one pair of correspondingly disposed second touch electrodes are electrically connected; the second connection portion extends substantially along the first direction.

6. The touch display structure according to claim 1, characterized in that, The first touch channel includes a plurality of first connecting portions, and the second touch channel includes a plurality of second connecting portions, wherein at least one first connecting portion and at least one second connecting portion intersect.

7. The touch display structure according to claim 6, characterized in that, It includes a first conductive layer, an insulating layer, and a second conductive layer stacked together, wherein the insulating layer is located between the first conductive layer and the second conductive layer, and a via is provided in the insulating layer; The first touch electrode and the second touch electrode are located in the first conductive layer; The first connection portion is located in the first conductive layer, and the second connection portion is located in the second conductive layer. The second connection portion is electrically connected to the corresponding second touch electrode through the via; or... The second connection portion is located in the first conductive layer, the first connection portion is located in the second conductive layer, and the first connection portion is electrically connected to the corresponding first touch electrode through the via.

8. The touch display structure according to claim 1, characterized in that, The first touch channel further includes a third connecting portion, and along the first direction, any two adjacent first touch electrodes are electrically connected through the third connecting portion; The second touch channel also includes a fourth connection portion, through which any two adjacent second touch electrodes are electrically connected along the second direction.

9. The touch display structure according to claim 8, characterized in that, Both the first touch electrode and the second touch electrode are approximately rhomboid in shape; The first touch channel is located in a first rectangular area extending along the first direction, the second touch channel is located in a second rectangular area extending along the second direction, and the rectangular area where the first rectangular area and the second rectangular area intersect is the touch unit area; The third connecting part and the fourth connecting part intersect to form a first connecting structure; At least two of the first connection structures are provided in the area of ​​the touch unit.

10. The touch display structure according to claim 9, characterized in that, The first touch channel includes a first connecting portion, and the second touch channel includes a second connecting portion; the first connecting portion and the second connecting portion intersect to form a second connecting structure; At least one of the second connection structures is provided in the area of ​​the touch unit.

11. The touch display structure according to claim 10, characterized in that, The touch unit area includes at least one first touch electrode; and / or, the touch unit area includes at least one second touch electrode.

12. The touch display structure according to claim 11, characterized in that, The touch unit area includes two first touch electrodes located in the same first sub-touch channel and arranged adjacently, and two second touch electrodes located in the same second sub-touch channel and arranged adjacently; In this configuration, each of the two first touch electrodes is disposed adjacent to one of the two second touch electrodes.

13. The touch display structure according to claim 8, characterized in that, The first touch electrode, the second touch electrode, the third connecting portion, and the fourth connecting portion are all formed by multiple metal meshes; In the case where the first touch channel includes a first connecting portion and / or the second touch channel includes a second connecting portion, the first connecting portion and / or the second connecting portion are formed by a plurality of said metal meshes.

14. The touch display structure according to claim 1, characterized in that, The pixel unit includes one sub-pixel capable of emitting red light, one sub-pixel capable of emitting blue light, and two sub-pixels capable of emitting green light. The orthographic projection of the light-emitting areas of all sub-pixels in the pixel unit onto the reference plane lies within the range of the orthographic projection of the same metal mesh onto the reference plane.

15. The touch display structure according to claim 14, characterized in that, The multiple sub-pixels are arranged in a GGRB pattern.

16. The touch display structure according to claim 1, characterized in that, The pixel unit includes a sub-pixel capable of emitting red light, a sub-pixel capable of emitting blue light, and a sub-pixel capable of emitting green light. The orthographic projections of the light-emitting areas of all sub-pixels in the pixel unit onto the reference plane lie within the range of the orthographic projection of the same metal mesh onto the reference plane; or, In the pixel unit, the orthographic projection of the light-emitting area of ​​the sub-pixel capable of emitting red light onto the reference surface is located within the range of the orthographic projection of one of the metal grids onto the reference surface. The orthographic projections of the light-emitting areas of the sub-pixels capable of emitting blue light and the sub-pixels capable of emitting green light onto the reference surface are both located within the range of the orthographic projection of another metal grid onto the reference surface.

17. The touch display structure according to claim 16, characterized in that, The multiple sub-pixels are arranged in Real RGB.

18. The touch display structure according to any one of claims 1 to 13, characterized in that, The plurality of metal meshes include a plurality of first sub-mesh groups and a plurality of second sub-mesh groups, the first sub-mesh groups and the second sub-mesh groups being alternately arranged; the first sub-mesh group includes at least one first sub-mesh, and the second sub-mesh group includes at least one second sub-mesh. Wherein, the orthographic projection of the light-emitting area of ​​some sub-pixels in the pixel unit onto the reference surface is located within the orthographic projection range of the same first sub-grid onto the reference surface; the orthographic projection of the light-emitting area of ​​all sub-pixels in the pixel unit onto the reference surface is located within the orthographic projection range of the same second sub-grid onto the reference surface.

19. The touch display structure according to claim 1, characterized in that, The metal wires extend in straight lines, and the metal mesh formed by the intersection of the multiple metal wires is rectangular; and / or, The metal wires extend in a zigzag pattern, and the metal mesh formed by the intersection of the multiple metal wires is polygonal.

20. The touch display structure according to claim 1, characterized in that, Between the light-emitting areas of at least one pair of adjacent sub-pixels, multiple metal lines are correspondingly arranged, and the multiple metal lines are electrically connected to each other.

21. The touch display structure according to claim 1, characterized in that, The light-emitting substrate includes a plurality of first signal lines extending along the first direction, and the orthographic projection of the metal line on the reference surface at least partially overlaps with the orthographic projection of at least one first signal line on the reference surface. And / or, The light-emitting substrate further includes a plurality of second signal lines extending along the second direction, wherein the orthographic projection of the metal lines on the reference surface at least partially overlaps with the orthographic projection of at least one of the second signal lines on the reference surface.

22. The touch display structure according to claim 21, characterized in that, The first signal line includes at least one of an enable signal line, a scan signal line, or an initialization signal line; The second signal line includes at least one of a data line or a power line.

23. A display device, characterized in that, include: The touch display structure as described in any one of claims 1 to 22.

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