Touch panel, touch display module and display device

Abstract

This application relates to a touch panel, a touch display module, and a display device, comprising a substrate; a touch layer disposed on one side of the substrate, wherein a touch area and an electrode isolation area are formed within the touch layer, the touch area comprising a plurality of independently disposed touch electrodes, and the electrode isolation area comprising an electrode isolation gap electrically isolated between two adjacent touch electrodes; and a first blanking structure comprising a plurality of blanking particles of at least two sizes distributed within the touch layer, wherein the blanking particles of different sizes have the function of changing the propagation direction of incident light; the blanking particles are used to receive incident light and / or secondary light after changing the propagation direction, and to reflect and / or refract at least once at least one of the incident light and the secondary light to form multiple dispersed outgoing light, wherein at least two outgoing light rays have different outgoing angles, so that the light-emitting surface can present a more uniform optical effect and improve the display effect.

Description

Technical Field

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

[0002] Wearable devices and mobile devices such as smartphones, smartwatches, and smart bracelets have become an indispensable part of people's daily lives. As consumers' demands for device quality increase, the performance of these devices in various usage scenarios has received widespread attention.

[0003] Currently, when wearable and mobile devices are in a bright light environment and the screen is off, users can often clearly see the etching patterns of the touch panel pattern (TP pattern), which affects the display effect. Summary of the Invention

[0004] Therefore, it is necessary to provide a touch panel, touch display module, and display device that can improve the display effect, in order to address the above-mentioned technical problems.

[0005] The first aspect of this application provides a display panel, comprising:

[0006] Substrate;

[0007] A touch layer is disposed on one side of the substrate. A touch area and an electrode isolation area are formed in the touch layer. The touch area includes a plurality of independently disposed touch electrodes. The electrode isolation area includes an electrode isolation gap electrically isolated between two adjacent touch electrodes.

[0008] The first blanking structure includes multiple blanking particles of at least two sizes distributed within the touch layer. The blanking particles of different sizes have the function of changing the propagation direction of incident light rays incident into the touch layer.

[0009] The blanking particles are used to receive the incident light and / or secondary light whose propagation direction has been changed by other blanking particles, and to reflect and / or refract at least one of the incident light and the secondary light at least once to form multiple dispersed outgoing light, wherein at least two of the outgoing light have different outgoing angles.

[0010] In one embodiment, the blanking particles include a first blanking particle and a second blanking particle, wherein the size of the first blanking particle is smaller than the size of the second blanking particle;

[0011] Optionally, the first blanking particles are distributed in the touch layer area corresponding to the electrode isolation gap, and the second blanking particles are distributed in the touch layer area corresponding to the touch electrode;

[0012] Optionally, the distribution density of the first vacuolated particles is greater than the distribution density of the second vacuolated particles.

[0013] In one embodiment, it further includes:

[0014] An insulating layer is disposed on the side of the substrate near the touch layer;

[0015] A second blanking structure is disposed within the insulating layer. The second blanking structure includes a first blanking block disposed in a first direction corresponding to the electrode isolation gap; the first direction is the direction of the substrate thickness.

[0016] Optionally, the first blanking block and the touch electrode have the same reflectivity to the incident light;

[0017] Optionally, the first blanking block is made of the same material as the touch electrode, and the first blanking block is insulated from the touch electrode by the insulating layer.

[0018] In one embodiment, the projection of the electrode isolation gap onto the plane of the substrate is located within the projection of the corresponding first blanking block onto the plane of the substrate.

[0019] In one embodiment, a first microstructure is provided on the surface of the first blanking block facing away from the substrate. The first microstructure includes a plurality of first protrusions extending from the surface of the first blanking block facing away from the substrate in a direction away from the substrate, and / or a plurality of first pits recessed from the surface of the first blanking block facing away from the substrate in a direction close to the substrate.

[0020] Optionally, the surface of the touch electrode facing away from the substrate is provided with a second microstructure, the second microstructure including a plurality of second protrusions extending from the surface of the touch electrode facing away from the substrate in a direction away from the substrate, and / or a plurality of second pits recessed from the surface of the touch electrode facing away from the substrate in a direction close to the substrate.

[0021] In one embodiment, the touch electrode includes planar electrodes, and a plurality of the planar electrodes are arranged in an array within the touch layer;

[0022] Optionally, the electrode isolation gap includes a two-electrode isolation region formed between two adjacent planar electrodes and a four-electrode isolation region formed between four adjacent planar electrodes. The first blanking block includes a two-electrode blanking block and a four-electrode blanking block that are correspondingly arranged with respect to the two-electrode isolation region in the first direction and are correspondingly arranged with respect to the four-electrode isolation region in the first direction. Each two-electrode blanking block and each four-electrode blanking block are staggered and the two-electrode blanking blocks are fitted together with the adjacent four-electrode blanking blocks.

[0023] Optionally, the two-electrode blanking block is integrally formed with the adjacent four-electrode blanking block;

[0024] Optionally, the planar electrode, the two-electrode blanking block, and the four-electrode blanking block are all made of indium tin oxide.

[0025] In one embodiment, the touch electrode includes a grid electrode, and a plurality of the grid electrodes are arrayed within the touch layer; the grid electrode includes a main body and an edge portion integrally disposed on the outer periphery of the main body, the main body includes a plurality of intersecting main electrode lines, and the edge portion includes edge electrode lines integrally extended outward from each of the main electrode lines, the edge electrode lines of two adjacent grid electrodes are correspondingly disposed, and an isolation break is formed between the corresponding two edge electrode lines in two adjacent grid electrodes, the isolation break being used to form the electrode isolation gap;

[0026] Optionally, the first blanking block includes a fracture blanking block that is disposed corresponding to the isolation fracture in the first direction;

[0027] Optionally, both the grid electrode and the fracture blanking block are made of a titanium / aluminum / titanium structure stacked sequentially.

[0028] In one embodiment, it further includes:

[0029] A pixel definition layer is disposed between the substrate and the touch layer, the pixel definition layer including a plurality of pixel blocks and pixel isolation gaps separating adjacent two pixel blocks;

[0030] A third blanking structure is disposed within the insulating layer, and the third blanking structure includes a second blanking block disposed in the first direction corresponding to the pixel isolation gap;

[0031] Optionally, the projection of the second blanking block onto the plane where the pixel definition layer is located is located within the pixel isolation gap;

[0032] Optionally, the main body is formed with a main body hollow area enclosed by adjacent main electrode lines and an edge hollow area enclosed by the edge electrode lines of two adjacent grid electrodes. The pixel block is correspondingly arranged with the main body hollow area and the edge hollow area, and the projection of the pixel block on the plane of the touch layer does not overlap with the projections of the main body hollow area and the edge hollow area on the plane of the touch layer.

[0033] Optionally, the shapes of the main body hollow area and the edge hollow area include one or more combinations of polygons, sectors, circles, and ellipses with at least three sides.

[0034] A second aspect of this application also provides a touch display module, including the touch panel as described above.

[0035] A third aspect of this application also provides a display device, including the touch display module described above.

[0036] The aforementioned touch panel, touch display module, and display device, by irregularly distributing at least two sizes of blanking particles within the touch layer, achieve this by allowing the incident light to undergo multiple reflections and / or refractions within the touch layer, resulting in multiple dispersed outgoing light rays. Furthermore, at least two of these outgoing light rays have different exit angles. This dispersion of the incident light allows the touch layer to reflect the incident light in a more uniform manner on the corresponding light-emitting surfaces, reducing optical interference visible to the human eye. The contrast ratio makes it difficult for the human eye to detect the grid pattern formed by the optical difference between the touch electrodes and the electrode isolation area; that is, it reduces the visibility of the etching patterns in the touch panel, significantly reducing visual interference when users use the device under strong light, thereby improving the display effect and user visual experience; moreover, the blanking particles are formed within the touch layer, which does not increase the overall thickness of the touch panel. At the same time, the formation of blanking particles can be easily integrated into the existing touch layer manufacturing process without making significant changes to the original process, which helps to reduce production costs and process difficulty. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1This is a cross-sectional schematic diagram of a touch panel according to one embodiment of this application;

[0039] Figure 2 for Figure 1 A schematic diagram showing the propagation of light in the first blanking structure in the touch panel;

[0040] Figure 3 This is a schematic diagram of the distribution of blanking particles in a touch panel according to an embodiment of this application;

[0041] Figure 4 This is a cross-sectional schematic diagram of a touch panel according to another embodiment of this application;

[0042] Figure 5 for Figure 3 The diagram shows the propagation of light in the first and second blanking structures of the touch panel.

[0043] Figure 6 This is a schematic diagram of the structure of the first microstructure in one embodiment of this application;

[0044] Figure 7 This is a schematic diagram of the structure of the first microstructure in another embodiment of this application;

[0045] Figure 8 This is a schematic diagram of the planar electrode structure in one embodiment of this application;

[0046] Figure 9 for Figure 8 Enlarged view of point A in the middle;

[0047] Figure 10 This is a schematic diagram showing the positional relationship between a planar electrode, a two-electrode blanking block, and a four-electrode blanking block.

[0048] Figure 11 This is a schematic diagram of the structure of the grid electrode in one embodiment of this application;

[0049] Figure 12 for Figure 11 Enlarged view of point B in the middle;

[0050] Figure 13 A schematic diagram showing the positional relationship between the grid electrode and the fracture surface blanking block;

[0051] Figure 14 This is a cross-sectional schematic diagram of a touch panel in another embodiment of this application;

[0052] Figure 15 This is a schematic diagram showing the positional relationship between the second blanking block, the pixel block, and the pixel isolation gap in one embodiment of this application;

[0053] Figure 16This is a schematic diagram showing the positional relationship between the second blanking block, the pixel block, and the pixel isolation gap in another embodiment of this application.

[0054] Explanation of reference numerals in the attached figures:

[0055] Substrate 100;

[0056] Touch layer 200, touch area 201, electrode isolation area 202, touch electrode 210, planar electrode 211, grid electrode 212, main body 2121, edge part 2122, main electrode line 2123, edge electrode line 2124, main body hollow area 2125, edge hollow area 2126, electrode isolation gap 220, two-electrode isolation area 221, four-electrode isolation area 222, isolation break 223;

[0057] First blanking structure 300, blanking particle 310, first blanking particle 311, second blanking particle 312;

[0058] Insulation layer 400;

[0059] Second blanking structure 500, first blanking block 510, first microstructure 511, first protrusion 5111, first pit 5112, two-electrode blanking block 512, four-electrode blanking block 513, fracture blanking block 514.

[0060] Pixel definition layer 600, pixel block 610, pixel isolation gap 620;

[0061] Third blanking structure 700, second blanking block 710;

[0062] Encapsulation layer 800, buffer layer 900, polarizer 1000, optical adhesive layer 1100, cover plate 1200. Detailed Implementation

[0063] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0064] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0065] In this document, spatial terms such as “upper” and “lower” are defined with reference to the accompanying drawings. Therefore, it will be understood that “upper” and “lower” are used interchangeably. It will be understood that when a layer is referred to as being “on” another layer, it can be formed directly on that other layer, or there may be intermediate layers. Therefore, it will be understood that when a layer is referred to as being “directly” on another layer, no intermediate layer is inserted in between.

[0066] In the accompanying drawings, the dimensions of layers and regions may be exaggerated for clarity. It is understood that when a layer or element is referred to as "on" another layer or substrate, the layer or element may be directly on said other layer or substrate, or there may be intermediate layers. Furthermore, it is understood that when a layer is referred to as "between two layers," the layer may be the only layer between said two layers, or there may be one or more intermediate layers. Additionally, the same reference numerals always denote the same elements.

[0067] In the following text, although terms such as “first” and “second” may be used to describe various components, these components are not necessarily limited to the terms above. The terms above are used only to distinguish one component from another. It will also be understood that expressions used in the singular form include plural expressions unless the singular form has a distinct meaning in the context. Furthermore, in the embodiments below, it will also be understood that the terms “comprising” and / or “having” as used herein indicate the presence of the stated feature or component, but do not exclude the presence or addition of one or more other features or components.

[0068] In the following embodiments, when a layer, region, or element is “connected,” it can be interpreted as the layer, region, or element being connected not only directly but also through other constituent elements placed therebetween. For example, when a layer, region, element, etc., is described as being connected or electrically connected, the layer, region, element, etc., can not only be directly connected or directly electrically connected, but can also be connected or electrically connected through another layer, region, element, etc., placed therebetween.

[0069] In the application documents, the term “and / or” includes any and all combinations of one or more of the related listed items. When a statement such as “at least one of…” follows a list of elements, it modifies the entire list of elements, rather than individual elements within that list.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0071] It should also be understood that the terms “including / comprise” or “have” specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0072] Electronic or electrical devices and / or any other related devices or components (e.g., display devices including a display panel and a display panel driver, wherein the display panel driver further includes a drive controller, a gate driver, a gamma reference voltage generator, a data driver, and a transmit driver) according to embodiments of the inventive concepts described herein can be implemented using any suitable hardware, firmware (e.g., application-specific integrated circuits), software, or a combination of software, firmware, and hardware. For example, various components of these devices may be formed on an integrated circuit (IC) chip or on a separate IC chip. Additionally, various components of these devices may be implemented on a flexible printed circuit film, a tape-on-a-package (TCP), a printed circuit board (PCB), or formed on a substrate. Furthermore, various components of these devices may be processes or threads running on one or more processors in one or more computing devices to execute computer program instructions and interact with other system components to perform the various functions described herein. The computer program instructions are stored in memory, which may be implemented in the computing device using standard storage devices such as random access memory (RAM). Computer program instructions may also be stored in other non-transitory computer-readable media (e.g., CD-ROM, flash memory, etc.). Furthermore, those skilled in the art will recognize that the functions of various computing devices can be combined or integrated into a single computing device, or the functions of a particular computing device can be distributed across one or more other computing devices, without departing from the spirit and scope of exemplary embodiments of the present invention.

[0073] While exemplary embodiments of the display module and the display device including the display module have been specifically described herein, many modifications and variations will be apparent to those skilled in the art. Therefore, it will be understood that the display module and the display device including the display module, constructed according to the principles of the invention, may be implemented in ways other than those specifically described herein. This application is also defined in the claims and their equivalents.

[0074] As described in the background section, existing touch panels suffer from poor display quality. The inventors have discovered that this problem arises because touch panels typically have multiple touch electrodes made of conductive metal. To ensure independence and insulation between each touch electrode, textures are etched between adjacent electrodes. Due to these textures, when the touch panel is off or under strong light, incident light passes through the textures and is reflected or refracted to the next layer. The incident light is reflected off the touch electrodes, resulting in a significant optical difference between the reflected light from the touch electrodes and the reflected light from the etched textures. This high contrast allows the etched textures to be observed on the screen, thus affecting the touch panel's display quality.

[0075] To reduce the optical difference between the touch electrode and the etched texture, related technologies typically increase the thickness of polarizers or other films. Increasing the film thickness lengthens the propagation path of reflected light on the touch electrode, which can weaken the reflected light to some extent. However, increasing the film thickness is not only detrimental to the miniaturization of touch panels, but also increases the production cost of touch panels. At the same time, since the etched texture is always present, the light at the etched texture will still be reflected or refracted into the next film layer, resulting in a still large optical difference between the touch electrode and the etched texture, and the display effect cannot be effectively improved.

[0076] Based on the above reasons, this invention provides a solution by setting blanking particles of different sizes in the touch layer. The blanking particles of different sizes have different reflectivities and refractive indices for light, which can change the propagation direction of light. When parallel light is incident on the touch layer, it can be reflected and / or refracted by the blanking particles of different sizes, so that the light emitted from the light-emitting surface of the touch panel is emitted at different angles, thereby reducing the optical difference between the touch electrode and the etching pattern and ensuring the display effect. Furthermore, since the blanking particles are integrated into the touch layer, no additional film layer is required, which will not increase the overall thickness of the touch panel. At the same time, the formation of blanking particles can be easily integrated into the existing touch layer manufacturing process without making significant changes to the original process, which helps to reduce production costs and process difficulty.

[0077] Please see Figure 1and Figure 2 This application provides a touch panel, including a substrate 100, a touch layer 200, and a first blanking structure 300. The substrate 100 can be a rigid substrate or a flexible substrate. For example, the material of the rigid substrate can include glass, quartz, etc.; the material of the flexible substrate can include organic polymer materials, including at least one of polyimide (PI), polyethylene terephthalate, polyethylene naphthalate, polyethylene, polyacrylate, polyetherimide, polycarbonate, and polyarylate.

[0078] The touch layer 200 is disposed on one side of the substrate 100. The touch layer 200 forms a touch area 201 and an electrode isolation area 202. The touch area 201 includes a plurality of independently disposed touch electrodes 210. The electrode isolation area 202 includes an electrode isolation gap 220 electrically isolated between two adjacent touch electrodes 210.

[0079] Each touch electrode 210 is independently configured to sense and identify the force and location acting on the touch panel, thereby converting the touch action into an electrical signal to control the device. Specifically, depending on the type of device the touch panel is used in, the touch electrodes 210 can be made of rigid materials to fit most touchscreen devices; for example, rigid materials may include indium tin oxide (ITO). Alternatively, the touch electrodes 210 can be made of flexible materials to fit medium to large-sized touchscreens and flexible touchscreens; for example, flexible materials may include metal mesh, silver nanowires, carbon nanotubes, graphene, conductive polymers, etc. An electrode isolation gap 220 is disposed between two adjacent touch electrodes 210. Typically, the electrode isolation gap 220 is coplanar with the touch electrodes 210 to isolate them, allowing each touch electrode 210 to sense and act independently, preventing short circuits between adjacent touch electrodes 210.

[0080] In some optional embodiments, the thickness of the touch electrode 210 is less than the thickness of the touch layer 200. Specifically, the touch electrode 210 can be formed in the touch layer 200 and corresponds to the side closest to the substrate 100. When forming the touch layer 200, an etching process can be used to form a metal pattern on the next film layer of the touch layer 200 or on the substrate 100, and then an organic material can be deposited on the metal pattern to obtain the touch layer 200. Understandably, the touch electrode 210 can also be formed in the touch layer 200 and corresponds to the side furthest from the substrate 100, or formed in the middle of the touch layer 200 so that the entire touch layer 200 includes the touch electrode 210. In other embodiments, the thickness of the touch electrode 210 can also be equal to the thickness of the touch layer 200.

[0081] A first blanking structure 300 is disposed within the touch layer 200 and is used to reflect and / or refract incident light rays into the touch layer 200 at least once to change the propagation direction of the incident light rays. The first blanking structure 300 includes a plurality of blanking particles 310 of at least two sizes distributed within the touch layer 200. The blanking particles 310 of different sizes have the function of changing the propagation direction of incident light rays into the touch layer 200. That is, the blanking particles 310 of different sizes have different reflectivities and refractive indices for light rays, so as to reflect the incident parallel light rays according to different reflectivities and / or refract them according to different refractive indices, thereby changing the direction of the incident light rays. The blanking particle 310 is used to receive the incident light and / or the secondary light whose propagation direction has been changed by other blanking particles 310; wherein, the secondary light refers to the light after the incident light has been reflected or refracted at least once by the blanking particle 310, and the blanking particle 310 reflects and / or refracts at least once the incident light and the secondary light to form multiple dispersed outgoing light, and in the multiple outgoing light, at least two outgoing light have different outgoing angles.

[0082] By subjecting incident light to multiple reflections and / or refractions within the touch layer 200 through reflections and / or refractions by multiple blanking particles 310, the light can either exit from the surface of the touch layer 200 away from the substrate 100 and from the light-emitting plate of the touch panel to form outgoing light, or propagate from the electrode isolation gap 220 into the next film layer and be reflected by the next film layer or continue to propagate downwards. The light reflected back to the touch layer 200 by the next film layer will be refracted or reflected again by the blanking particles 310, and so on. On the one hand, this makes the outgoing light emitted from the light-emitting surface of the touch panel appear irregular, thereby allowing the touch layer 200 to disperse and reflect the incident light, resulting in a more uniform optical effect on the corresponding light-emitting surface and reducing the optical contrast observable by the human eye. On the other hand, by subjecting the incident light to multiple reflections and / or refractions, the energy of the light can be weakened during its propagation, which is beneficial to further reduce the differences between the various outgoing light rays.

[0083] In some embodiments, the blanking particle 310 includes a first blanking particle 311 and a second blanking particle 312, wherein the size of the first blanking particle 311 is smaller than the size of the second blanking particle 312. The structures of the first blanking particle 311 and the second blanking particle 312 may be the same or different. For example, the first blanking particle 311 and the second blanking particle 312 may be at least one of the following structures: spherical structure, ellipsoidal structure, polyhedral structure, etc. In specific implementations, the first blanking particle 311 and the second blanking particle 312 may be made of a material that has the effect of light reflection or refraction but is not conductive, such as at least one of the following materials: optical glass, reflective material, acrylic material, etc. Understandably, in some other embodiments, the first blanking particle 311 and the second blanking particle 312 can also be made of conductive metal materials, such as silver, aluminum, aluminum oxide, etc. However, when the first blanking particle 311 and the second blanking particle 312 are made of conductive metal materials, the first blanking particle 311 and the second blanking particle 312 are insulated from the touch electrode 210 to prevent the touch electrode 210 from being connected through the first blanking particle 311 and the second blanking particle 312.

[0084] In some alternative embodiments, please refer to Figure 3 The first blanking particles 311 are distributed in the touch layer 200 area corresponding to the electrode isolation gap 220, and the second blanking particles 312 are distributed in the touch layer 200 area corresponding to the touch electrode 210. Because the first blanking particles 311 are smaller, they reflect light more, causing the incident light to deviate more from its original incident direction. Conversely, because the first blanking particles 311 are smaller, they reflect light less, causing the incident light to deviate less from its original incident direction. This arrangement allows the light reflected at the touch electrode 210 and the electrode isolation gap 220 to have different directions, reducing the difference in light entering the human eye. Preferably, the first blanking particles 311 and the second blanking particles 312 can be irregularly distributed in their corresponding areas, making the change in the direction of light propagation irregular and improving the reflection effect. Understandably, in some other embodiments, the first blanking particles 311 and the second blanking particles 312 may also be mixed and distributed in the touch layer 200. That is, whether in the area corresponding to the touch electrode 210 or in the area corresponding to the electrode isolation gap 220, the first blanking particles 311 and the second blanking particles 312 are mixed and distributed so that light can be reflected and / or refracted irregularly.

[0085] In some optional embodiments, the distribution density of the first blanking particles 311 is greater than the distribution density of the second blanking particles 312. Specifically, the distribution density of the first blanking particles 311 in the touch layer 200 region corresponding to the electrode isolation gap 220 is greater than the distribution density of the second blanking particles 312 in the touch layer 200 region corresponding to the touch electrode 210. Thus, a greater number of first blanking particles 311 are disposed in the touch layer 200 region corresponding to the electrode isolation gap 220, increasing the probability that light will incident on the first blanking particles 311 in the electrode isolation region 202, thereby increasing the probability that light will be reflected and / or refracted; simultaneously, a greater number of second blanking particles 312... The blanking particle 311 can also increase the probability of multiple reflections and / or refractions of light, reducing the amount of light entering the next film layer; a smaller number of second blanking particles 312 are provided in the area of ​​the touch layer 200 corresponding to the touch electrode 210. Since the touch electrode 210 itself has a light reflection function, the light propagating to the touch electrode 210 will not propagate to the next film layer. Therefore, a smaller number of second blanking particles 312 can be provided in the area of ​​the touch layer 200 corresponding to the touch electrode 210, as long as they can change the direction of light propagation.

[0086] In some optional embodiments, the surface of the blanking particles 310 may also be modified or have pits or protrusions to increase the contact area or connection strength between the blanking particles 310 and the touch layer 200 material, so as to adsorb more molecular chains, make the stress distribution more uniform, and improve the structural strength of the touch layer 200.

[0087] In some embodiments, see Figure 4 and Figure 5 The touch panel of this application further includes an insulating layer 400 and a second blanking structure 500. The insulating layer 400 is disposed on the side of the substrate 100 near the touch layer 200. For example, the insulating layer can be disposed between the touch layer 200 and the substrate 100, or on the side of the touch layer 200 away from the substrate 100. Specifically, the insulating layer 400 can be stacked between the touch layer 200 and the substrate 100 in a first direction, or it can be stacked above the touch layer 200 along the first direction, where the first direction is the thickness direction of the substrate 100. The insulating layer 400 can be implemented using organic materials, inorganic materials, or other materials. For example, organic materials can include at least one of acrylic resin, methacrylic resin, epoxy resin, and polyimide resin; inorganic materials can include at least one of silicon nitride, silicon oxide, and silicon oxynitride; and other materials can include ceramic materials, composite materials, etc.

[0088] The second blanking structure 500 is disposed within the insulating layer 400. Taking the insulating layer 400 as an example, which is disposed between the touch layer 200 and the substrate 100 layer, the second blanking structure 500 can be disposed within the insulating layer 400 and on the side away from the touch layer 200, so that there is a vertical height difference between the second blanking structure 500 and the touch layer 200, thereby preventing the second blanking structure 500 from contacting the touch electrode 210. The second blanking structure 500 includes a first blanking block 510 corresponding to the electrode isolation gap 220 in the first direction. That is, the first blanking block 510 is disposed below the electrode isolation gap 220 and is used to reflect the light propagating through the electrode isolation gap 220 into the insulating layer 400, thereby changing the propagation direction of the light and reflecting the light back to the touch layer 200. The light is then reflected and / or refracted again by the blanking particles 310. The first blanking block 510 is insulated from the touch electrode 210 by the insulating layer 400 to prevent the second blanking structure 500 from contacting the touch electrode 210.

[0089] The first blanking block 510 and the touch electrode 210 have the same reflectivity for incident light, ensuring that the energy of the light reflected from the first blanking block 510 and the touch electrode 210 is equivalent, thereby improving visual uniformity. Specifically, the first blanking block 510 can be made of the same material as the touch electrode 210. For example, when the touch electrode 210 is made of indium tin oxide (ITO), the first blanking block 510 can also be made of ITO. Similarly, when the touch electrode 210 is made of titanium aluminum titanium (TIT), the first blanking block 510 can also be made of TTI to ensure that the reflectivity of the first blanking block 510 and the touch electrode 210 is the same. Understandably, in some other embodiments, to achieve reflectivity matching between the first blanking block 510 and the touch electrode 210, the first blanking block 510 can also be made of a material with a reflectivity comparable to that of the touch electrode 210.

[0090] The surface of the touch electrode 210 facing away from the substrate 100 has a first reflectivity to incident light, the surface of the first blanking block 510 facing away from the substrate 100 has a second reflectivity to incident light, and the surface of the insulating layer 400 facing away from the substrate 100 has a third reflectivity to incident light. The difference between the first and second reflectivity is smaller than the difference between the first and third reflectivity. When the first blanking block 510 and the touch electrode 210 are made of the same material, the difference between the first and second reflectivity can be approximately zero. Thus, the light reflection effect of the first blanking block 510 is closer to that of the touch electrode 210 than the light reflection effect through the insulating layer 400 in related technologies, effectively reducing the optical differences between reflected light in different areas.

[0091] In some optional embodiments, the projection of the electrode isolation gap 220 on the plane of the substrate 100 is located within the projection of the corresponding first blanking block 510 on the plane of the substrate 100. With this configuration, the projection of the first blanking block 510 overlaps with the projection of the touch electrode 210 on the plane of the substrate 100, which can prevent light from propagating from the gap of the vertical height difference between the first blanking block 510 and the touch electrode 210 into the insulating layer 400, thereby improving the amount of light reflection.

[0092] In some embodiments, see Figure 6 and Figure 7 The surface of the first blanking block 510 facing away from the substrate 100 is provided with a first microstructure 511. The first microstructure 511 is used to change the roughness of the surface of the first blanking block 510 facing away from the substrate 100, so as to achieve diffuse reflection of light and reduce the reflection effect of light. Optionally, the surface of the first blanking block 510 facing away from the substrate 100 can be in the form of a concave curved surface structure. The concave curved surface structure is conducive to light focusing, so that when light enters the surface of the first blanking block 510 facing away from the substrate 100, it can be gathered by the curved surface and reflected and absorbed by the first microstructure 511, thereby increasing the diffuse reflection and absorption effect of light.

[0093] For example, the first microstructure 511 includes a plurality of first protrusions 5111 extending from the surface of the first blanking block 510 facing away from the substrate 100 in a direction away from the substrate 100, and / or a plurality of first pits 5112 recessed from the surface of the first blanking block 510 facing away from the substrate 100 in a direction close to the substrate 100. Taking the first protrusion 5111 as an example, the first protrusion 5111 is generally a hemispherical structure protruding from the surface of the first blanking block 510 facing away from the substrate 100 in a direction away from the substrate 100, and absorbs or reflects light through the spherical surface. It is understood that in some other embodiments, the first protrusion 5111 may also be other cubic structures protruding from the surface of the first blanking block 510 facing away from the substrate 100 in a direction away from the substrate 100, such as a semi-ellipsoidal shape, other spheres and / or combinations of polyhedra. Preferably, all the first protrusions 5111 have the same structure, that is, they are all hemispherical or all polyhedral. This ensures stable reflection of light illuminating the first protrusions 5111 and reduces the molding difficulty of the first microstructures 511. Understandably, without considering the difficulty and cost of the process, the first protrusions 5111 can also be a hybrid structure formed by a combination of hemispherical, semi-ellipsoidal, other spheres and / or polyhedra to increase the irregularity of light reflection. Similarly, when only the first recess 5112 is provided or when the first protrusions 5111 and the first recess 5112 are mixed, the structure of the first recess 5112 can also include a hemispherical, semi-ellipsoidal, other spheres and / or polyhedral combinations.

[0094] A second microstructure (not shown) is provided on the surface of the touch electrode 210 facing away from the substrate 100. The second microstructure is used to change the roughness of the surface of the touch electrode 210 facing away from the substrate 100 to achieve diffuse reflection of light and reduce the reflection effect of light. Optionally, the surface of the touch electrode 210 facing away from the substrate 100 can be a concave curved surface structure. The concave curved surface structure is conducive to light focusing, so that when light enters the surface of the touch electrode 210 facing away from the substrate 100, it can be gathered by the curved surface and reflected and absorbed by the first microstructure 511 to increase the diffuse reflection and absorption effect of light.

[0095] For example, the second microstructure includes a plurality of second protrusions extending from the surface of the touch electrode 210 facing away from the substrate 100 in a direction away from the substrate 100, and / or a plurality of second pits recessed from the surface of the touch electrode 210 facing away from the substrate 100 in a direction closer to the substrate 100. The structures of the second protrusions and second pits are similar to the structures of the first protrusion 5111 and the first pit 5112, and can be referred to the description in the above embodiments for details, which will not be repeated here.

[0096] In some optional embodiments, the surfaces of the first protrusion 5111, the first recess 5112, the second protrusion, and the second recess may be further surface-treated to give the first protrusion 5111, the first recess 5112, the second protrusion, and the second recess a certain roughness, so as to further improve the diffuse reflection effect of light.

[0097] In some embodiments, see Figure 8 , Figure 9 and Figure 10The touch electrode 210 includes planar electrodes 211, and multiple planar electrodes 211 are arrayed within the touch layer 200. The planar electrodes 211 have an overall flat plate structure. The electrode isolation gap 220 includes a two-electrode isolation region 221 and a four-electrode isolation region 222. The two-electrode isolation region 221 is formed between two adjacent planar electrodes 211 and is used to isolate the planar electrodes 211 at the adjacent positions of two planar electrodes 211. The four-electrode isolation region 222 is formed between four adjacent planar electrodes 211 and is used to isolate the planar electrodes 211 at the adjacent positions of four planar electrodes 211. Correspondingly, the first blanking block 510 includes a two-electrode blanking block 512 and a four-electrode blanking block 513. The two-electrode blanking block 512 is correspondingly disposed with the two-electrode isolation region 221 in the first direction, and the projection of the two-electrode isolation region 221 on the plane of the substrate 100 is located within the projection of the corresponding two-electrode blanking block 512 on the plane of the substrate 100, for reflecting light propagating through the two-electrode isolation region 221. The four-electrode blanking block 513 is correspondingly disposed with the four-electrode isolation region 222 in the first direction, and the projection of the four-electrode isolation region 222 on the plane of the substrate 100 is located within the projection of the corresponding four-electrode blanking block 513 on the plane of the substrate 100, for reflecting light propagating through the four-electrode isolation region 222. Optionally, the planar electrode 211, the two-electrode blanking block 512, and the four-electrode blanking block 513 are all made of indium tin oxide.

[0098] Each pair of two-electrode blanking blocks 512 and each pair of four-electrode blanking blocks 513 are staggered, and the pair of two-electrode blanking blocks 512 are fitted together with the adjacent four-electrode blanking blocks 513 to completely cover the electrode isolation gap 220. Optionally, the pair of two-electrode blanking blocks 512 and the adjacent four-electrode blanking blocks 513 are integrally formed. On the one hand, this can avoid gaps between the blanking blocks that would affect the light reflection effect. On the other hand, it can also increase the overall structural strength of the first blanking block 510 and the insulating layer 400.

[0099] In some embodiments, see Figure 11 , Figure 12 and Figure 13 The touch electrode 210 includes a grid electrode 212, and multiple grid electrodes 212 are arranged in an array within the touch layer 200. The grid electrode 212 includes a main body portion 2121 and an edge portion 2122 integrally disposed on the outer periphery of the main body portion 2121. The main body portion 2121 has an overall hollowed-out mesh structure, and the edge portion 2122 is adjacent to other grid electrodes 212. Electrode isolation gaps 220 are formed between the edge portions 2122 of adjacent grid electrodes 212.

[0100] Specifically, the main body 2121 includes multiple intersecting main electrode lines 2123. Each main electrode line 2123 is connected end-to-end according to a certain pattern to form multiple regularly arranged grids. Adjacent grids can share a single main electrode line 2123. The edge part 2122 includes edge electrode lines 2124 integrally extended outward from each main electrode line 2123. The edge electrode lines 2124 of adjacent grid electrodes 212 are arranged in a one-to-one correspondence, meaning that two grid electrodes 212 are adjacent through the edge electrode lines 2124. In adjacent grid electrodes 212, an isolation break 223 is formed between corresponding edge electrode lines 2124. The isolation break 223 is used to form an electrode isolation gap 220, and the isolation break 223 can be achieved by cutting. The first blanking block 510 includes a fracture blanking block 514 corresponding to the isolation fracture 223 in the first direction. Since the isolation fracture 223 is located between two adjacent grid electrodes 212, and the isolation fracture 223 corresponding to each edge electrode line 2124 can be considered as a straight line, a relatively obvious fracture pattern will be observed when light shines on it. In this embodiment, by setting the fracture blanking block 514 in the fracture area, the light at the isolation fracture 223 can be reflected. Optionally, both the grid electrode 212 and the fracture blanking block 514 are made of a titanium / aluminum / titanium structure stacked sequentially.

[0101] In some embodiments, see Figure 14 The touch panel of this application also includes a pixel definition layer 600 and a third blanking structure 700. The pixel definition layer 600 can be disposed between the substrate 100 and the touch layer 200 to define the boundary and shape of each pixel, ensuring that each pixel can emit light independently without interfering with each other. Specifically, the pixel definition layer 600 includes multiple pixel blocks 610 and pixel isolation gaps 620 separating adjacent pixel blocks 610. Pixel blocks 610 are used to define the light-emitting area of ​​a single pixel to control the light-emitting area and shape of each pixel, ensuring that current flows only through the specified area. The pixel blocks 610 are generally diamond-shaped, and the size of pixel blocks 610 in different rows or columns is different to define pixels of different sizes. The pixel isolation gaps 620 refer to the non-light-emitting areas between adjacent pixel blocks 610, used to physically isolate the pixel blocks 610 and prevent current leakage and light crosstalk.

[0102] The third blanking structure 700 is disposed within the insulating layer 400. The third blanking structure 700 can be disposed coplanarly with the second blanking structure 500 within the insulating layer 400, or it can be disposed non-coplanarly with the second blanking structure 500 within the insulating layer 400, to avoid adding an additional insulating layer 400. In other embodiments, the third blanking structure 700 can also be disposed in an additional insulating film layer. This insulating film layer can be disposed on the side of the pixel definition layer 600 away from the substrate 100, or on the side of the pixel definition layer 600 closer to the substrate 100, or it can be disposed between other film layers to achieve the arrangement of the third blanking structure 700.

[0103] The third blanking structure 700 includes a second blanking block 710 corresponding to the pixel block 610 in the first direction. The second blanking block 710 is used to reflect light propagating through the pixel isolation gap 620 into the insulating layer 400 or to cut off the light path to prevent light from propagating into the pixel isolation gap 620. The second blanking block 710 is insulated from the touch electrode 210 through the insulating layer 400 to prevent the third blanking structure 700 from contacting the touch electrode 210.

[0104] The second blanking block 710 and the pixel block 610 have the same reflectivity for incident light, ensuring that the light energy reflected from the second blanking block 710 and the pixel block 610 is equivalent, thereby improving visual uniformity. In practice, the second blanking block 710 can be made of the same material as the pixel block 610. Understandably, in some other embodiments, to achieve reflectivity matching between the second blanking block 710 and the pixel block 610, the second blanking block 710 can also be made of a material with a reflectivity comparable to that of the pixel block 610.

[0105] In some optional embodiments, the projection of the second blanking block 710 onto the plane of the pixel definition layer 600 is located within the pixel isolation gap 620; that is, the projection of the pixel isolation gap 620 onto the plane of the pixel definition layer 600 is located within the projection of the second blanking block 710 onto the plane of the pixel definition layer 600. With this configuration, the projection of the second blanking block 710 and the projection of the pixel block 610 do not overlap on the plane of the pixel definition layer 600, thus avoiding the second blanking block 710 from obstructing the light-emitting area and ensuring the imaging effect of the pixel block 610. The main body 2121 has a main body hollow area 2125 formed by adjacent main electrode lines 2123 and an edge hollow area 2126 formed by edge electrode lines 2124 of two adjacent grid electrodes 212. The pixel block 610 is correspondingly disposed with the main body hollow area 2125 and the edge hollow area 2126, which provide a display channel for the pixel block 610. The projection of pixel block 610 on the plane of touch layer 200 does not overlap with the main cutout area 2125 and the edge cutout area 2126. That is, the projection of pixel block 610 on the plane of pixel definition layer 600 does not overlap with the projection of the main cutout area 2125 and the edge cutout area 2126 on the plane of pixel definition layer 600, so as to avoid the grid electrode 212 from occluding pixel block 610 and affecting the imaging effect.

[0106] In some alternative embodiments, the shapes of the main cutout area 2125 and the edge cutout area 2126 include one or more combinations of polygons, sectors, circles, and ellipses with at least three sides.

[0107] For specific implementation details, please refer to [link / reference]. Figure 15 The third blanking structure 700 includes a plurality of independent second blanking blocks 710. The plurality of second blanking blocks 710 surround the pixel isolation gap 620 disposed around the pixel block 610 to block the pixel isolation gap 620 around the pixel block 610 and reduce the optical difference between the pixel isolation gap 620 and the pixel block 610.

[0108] In some optional embodiments, please refer to FIG. 16, the third blanking structure 700 may also include a second blanking block 710. The second blanking block 710 is generally in the form of a ring structure. The second blanking block 710 surrounds the pixel block 610 to block the pixel isolation gap 620 around the pixel block 610, so as to reduce the optical difference between the pixel isolation gap 620 and the pixel block 610.

[0109] Please see Figure 1The touch panel of this application may further include an encapsulation layer 800, a buffer layer 900, etc., disposed between the substrate 100 and the touch layer 200, and a polarizer 1000, an optical adhesive layer 1100, and a cover plate 1200, etc., disposed on the side of the touch layer 200 away from the substrate 100. It should be noted that the stacking order of the encapsulation layer 800, the buffer layer 900, the polarizer 1000, and the optical adhesive layer 1100 may be determined according to specific circumstances and is not limited here. For example, in some embodiments, the encapsulation layer 800, the buffer layer 900, the polarizer 1000, and the optical adhesive layer 1100 may be stacked sequentially on the substrate 100, but the cover plate 1200 should be located on the outermost side.

[0110] It is understood that the encapsulation layer 800, buffer layer 900, polarizer 1000, optical adhesive layer 1100 and cover plate 1200 are known to those skilled in the art and are not the focus of this application, so their specific structures and principles will not be described in detail here.

[0111] Based on the same inventive concept, this application also provides a touch display module (not shown), which includes the touch panel in the above embodiments.

[0112] Based on the same inventive concept, this application also provides a display device (not shown), which includes the touch panel or touch display module in the above embodiments.

[0113] It is understood that the display device in the embodiments of this application can be any product or component with display function, such as OLED (Organic Light-Emitting Diode) display device, QLED (Quantum Dot Light Emitting Diodes) display device, electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, wearable device, Internet of Things device, etc., and the embodiments disclosed in this application do not limit this.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A touch panel, characterized in that, include: Substrate; A touch layer is disposed on one side of the substrate. A touch area and an electrode isolation area are formed in the touch layer. The touch area includes a plurality of independently disposed touch electrodes. The electrode isolation area includes an electrode isolation gap electrically isolated between two adjacent touch electrodes. The first blanking structure includes multiple blanking particles of at least two sizes distributed within the touch layer. The blanking particles of different sizes have the function of changing the propagation direction of incident light rays incident into the touch layer. The blanking particles are used to receive the incident light and / or secondary light whose propagation direction has been changed by other blanking particles, and to reflect and / or refract at least one of the incident light and the secondary light at least once to form multiple dispersed outgoing light, wherein at least two of the outgoing light have different outgoing angles.

2. The touch panel according to claim 1, characterized in that, The blanking particles include a first blanking particle and a second blanking particle, wherein the size of the first blanking particle is smaller than the size of the second blanking particle; Optionally, the first blanking particles are distributed in the touch layer area corresponding to the electrode isolation gap, and the second blanking particles are distributed in the touch layer area corresponding to the touch electrode; Optionally, the distribution density of the first vacuolated particles is greater than the distribution density of the second vacuolated particles.

3. The touch panel according to claim 1, characterized in that, Also includes: An insulating layer is disposed on the side of the substrate near the touch layer; A second blanking structure is disposed within the insulating layer. The second blanking structure includes a first blanking block disposed in a first direction corresponding to the electrode isolation gap; the first direction is the direction of the substrate thickness. Optionally, the first blanking block and the touch electrode have the same reflectivity to the incident light; Optionally, the first blanking block is made of the same material as the touch electrode, and the first blanking block is insulated from the touch electrode by the insulating layer.

4. The touch panel according to claim 3, characterized in that, The projection of the electrode isolation gap onto the plane of the substrate is located within the projection of the corresponding first blanking block onto the plane of the substrate.

5. The touch panel according to claim 3, characterized in that, The surface of the first blanking block facing away from the substrate is provided with a first microstructure. The first microstructure includes a plurality of first protrusions extending from the surface of the first blanking block facing away from the substrate in a direction away from the substrate, and / or a plurality of first pits recessed from the surface of the first blanking block facing away from the substrate in a direction close to the substrate. Optionally, the surface of the touch electrode facing away from the substrate is provided with a second microstructure, the second microstructure including a plurality of second protrusions extending from the surface of the touch electrode facing away from the substrate in a direction away from the substrate, and / or a plurality of second pits recessed from the surface of the touch electrode facing away from the substrate in a direction close to the substrate.

6. The touch panel according to claim 3, characterized in that, The touch electrode includes a planar electrode, and a plurality of the planar electrodes are arranged in an array within the touch layer; Optionally, the electrode isolation gap includes a two-electrode isolation region formed between two adjacent planar electrodes and a four-electrode isolation region formed between four adjacent planar electrodes. The first blanking block includes a two-electrode blanking block and a four-electrode blanking block that are correspondingly arranged with respect to the two-electrode isolation region in the first direction and are correspondingly arranged with respect to the four-electrode isolation region in the first direction. Each two-electrode blanking block and each four-electrode blanking block are staggered and the two-electrode blanking blocks are fitted together with the adjacent four-electrode blanking blocks. Optionally, the two-electrode blanking block is integrally formed with the adjacent four-electrode blanking block; Optionally, the planar electrode, the two-electrode blanking block, and the four-electrode blanking block are all made of indium tin oxide.

7. The touch panel according to claim 3, characterized in that, The touch electrode includes a grid electrode, and multiple grid electrodes are arrayed within the touch layer. The grid electrode includes a main body and an edge portion integrally disposed on the outer periphery of the main body. The main body includes multiple intersecting main electrode lines, and the edge portion includes edge electrode lines integrally extended outward from each of the main electrode lines. The edge electrode lines of two adjacent grid electrodes are arranged in a one-to-one correspondence, and an isolation break is formed between the corresponding two edge electrode lines in two adjacent grid electrodes. The isolation break is used to form the electrode isolation gap. Optionally, the first blanking block includes a fracture blanking block that is disposed corresponding to the isolation fracture in the first direction; Optionally, both the grid electrode and the fracture blanking block are made of a titanium / aluminum / titanium structure stacked sequentially.

8. The touch panel according to claim 7, characterized in that, Also includes: A pixel definition layer is disposed between the substrate and the touch layer, the pixel definition layer including a plurality of pixel blocks and pixel isolation gaps separating adjacent two pixel blocks; A third blanking structure is disposed within the insulating layer, and the third blanking structure includes a second blanking block disposed in the first direction corresponding to the pixel isolation gap; Optionally, the projection of the second blanking block onto the plane where the pixel definition layer is located is located within the pixel isolation gap; Optionally, the main body is formed with a main body hollow area enclosed by adjacent main electrode lines and an edge hollow area enclosed by the edge electrode lines of two adjacent grid electrodes. The pixel block is correspondingly arranged with the main body hollow area and the edge hollow area, and the projection of the pixel block on the plane of the touch layer does not overlap with the projections of the main body hollow area and the edge hollow area on the plane of the touch layer. Optionally, the shapes of the main body hollow area and the edge hollow area include one or more combinations of polygons, sectors, circles, and ellipses with at least three sides.

9. A touch display module, characterized in that, Including the touch panel as described in any one of claims 1 to 8.

10. A display device, characterized in that, Includes the touch display module as described in claim 9.

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