Touch substrate and display module

Abstract

The invention belongs to the field of display screens. The invention provides a touch substrate and a display module, the touch substrate is used for being arranged on one side of a display panel, and the touch substrate comprises a first touch electrode layer and a first insulating layer which are arranged in a stacked mode; the first insulating layer comprises a first antireflection layer and a second antireflection layer stacked on the side, away from the display panel, of the first antireflection layer; wherein the refractive index of the first antireflection layer is n1, the refractive index of the second antireflection layer is n2, and n1 is larger than n2, so that the first insulating layer can at least eliminate part of incident light pointing to the direction of the first touch electrode layer along the first insulating layer. The adjustment of the touch control substrate on the light ray anti-reflection capability is realized by optimizing the original insulation structure of the touch control substrate, that is, the first insulation layer has the insulation capability and the anti-reflection capability at the same time, and the cost of the touch control substrate and the display module can be reduced.

Description

Technical Field

[0001] This application belongs to the field of display technology, and more specifically, relates to a touch control substrate and a display module. Background Art

[0002] With the rapid development of display technology, the application scenarios of electronic devices such as mobile phones and tablet computers are becoming increasingly rich, and people's requirements for display quality and other aspects are also getting higher and higher. However, in some bright usage environments, electronic devices are prone to glare under the illumination of ambient light, causing the user's eyes to feel stinging or discomfort. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a touch control substrate and a display module to solve the technical problem that existing electronic devices are prone to glare under the illumination of ambient light.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] In a first aspect, a touch control substrate is provided for being disposed on one side of a display panel. The touch control substrate includes a first touch control electrode layer and a first insulating layer stacked. The first insulating layer includes:

[0006] A first antireflection layer;

[0007] A second antireflection layer, stacked on a side of the first antireflection layer facing away from the display panel; where

[0008] The refractive index of the first antireflection layer is n 1 , and the refractive index of the second antireflection layer is n 2 , n 1 > n 2 , so that the first insulating layer can at least eliminate a part of the incident light in the direction from the first insulating layer to the first touch control electrode layer.

[0009] Optionally, the thickness of the first antireflection layer is t1, n 1 *t 1 = λ / 4, where λ is the wavelength of the incident light.

[0010] Optionally, the thickness of the second antireflection layer is t 2 , n 2 *t 2 = λ / 4.

[0011] Optionally, n 1 = 1.5 to 2.4; and / or, n 2 = 1 to 2.

[0012] Optionally, t 1= 20 nm to 300 nm.

[0013] Optionally, t 2 = 30 nm to 400 nm.

[0014] Optionally, the first insulating layer further includes a third antireflection layer, the third antireflection layer is located on a side of the second antireflection layer away from the first antireflection layer, and the refractive index of the third antireflection layer is n 3 , n 3 < n 2 .

[0015] Optionally, n 2 = 0.5 * (n 1 + n 3 ).

[0016] Optionally, the thickness of the first insulating layer is t, t < 10 μm.

[0017] Optionally, both the first antireflection layer and the second antireflection layer are nitride layers, and the mass ratio of nitrogen element in the first antireflection layer is less than the mass ratio of nitrogen element in the second antireflection layer.

[0018] Optionally, the material of the nitride layer includes at least one of silicon oxynitride, silicon nitride, and silicon oxide.

[0019] Optionally, the first insulating layer is disposed on a side of the first touch electrode layer away from the display panel; or,

[0020] the first insulating layer is disposed on a side of the first touch electrode layer facing the display panel.

[0021] Optionally, the touch substrate further includes a second touch electrode layer, and the second touch electrode layer is disposed on a side of the first insulating layer away from the touch substrate.

[0022] Optionally, the first insulating layer is disposed between the first touch electrode layer and the display panel.

[0023] In a second aspect, a display module is provided, including a display panel and the above touch substrate, and the touch substrate is laminated on the display panel.

[0024] Optionally, the display panel is a flexible display panel, and the touch substrate is fixed to the flexible display panel; or,

[0025] the display panel is a rigid display panel, and the display module further includes a packaging board connected to the rigid display panel, and the touch substrate is fixed to the packaging board.

[0026] In a third aspect, an electronic device is provided, including the above-mentioned display module.

[0027] The beneficial effects of the touch control substrate provided in this application are as follows: By disposing the second antireflection layer on the side of the first antireflection layer facing away from the display panel, and the refractive index of the first antireflection layer being higher than that of the second antireflection layer, it can enable the light incident from the second antireflection layer into the first antireflection layer to generate a half-wave loss, so that the incident light entering the first insulating layer from the environment can undergo destructive interference in the first insulating layer. In this way, the first insulating layer can eliminate a part of the incident light, reduce the ambient light irradiating the light-emitting side surface of the display panel, and thus reduce the reflection of the display panel to the ambient light and lower the probability of glare generation; The first insulating layer is divided into a stacked first antireflection layer and a second antireflection layer, that is, by optimizing the original insulating structure of the touch control substrate to adjust the light antireflection ability of the touch control substrate. Both the first antireflection layer and the second antireflection layer have the ability to reduce light reflection and insulation, that is, the first insulating layer has both insulation ability and antireflection ability, which is beneficial to reducing the cost of the touch control substrate and the display module. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of the first insulating layer and the first touch control electrode layer provided in the embodiment of this application;

[0030] Figure 2 Schematic diagram of the propagation of ambient light in the first insulating layer and the first touch control electrode layer provided in the embodiment of this application;

[0031] Figure 3 Schematic diagram of the touch control substrate provided in the embodiment of this application;

[0032] Figure 4 Schematic diagram of the touch control substrate and the thin film encapsulation layer provided in an embodiment of this application;

[0033] Figure 5 Schematic diagram of the touch control substrate and the thin film encapsulation layer provided in another embodiment of this application;

[0034] Figure 6 Schematic diagram of the touch control substrate and the thin film encapsulation layer provided in yet another embodiment of this application;

[0035] Figure 7Schematic diagram of a touch control substrate and a thin film encapsulation layer provided by another embodiment of the present application;

[0036] Figure 8 Schematic diagram of a display module provided by an embodiment of the present application;

[0037] Figure 9 Schematic diagram of a display module provided by another embodiment of the present application.

[0038] Among them, each reference numeral in the figure:

[0039] 100, thin film encapsulation layer; 200, touch control substrate; 300, display panel; 400, cover plate; 500, encapsulation board;

[0040] 1, first insulating layer; 11, first antireflection layer; 12, second antireflection layer; 13, third antireflection layer; 2, first touch control electrode layer; 3, second touch control electrode layer; 4, second insulating layer; 5, third insulating layer. Detailed implementation manners

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the following further describes the present application in detail with reference to the appended Figure 1 to the appended Figure 9 and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0045] With the rapid development of display technology, the application scenarios of electronic devices such as mobile phones and tablets are becoming increasingly rich, and people's requirements for display quality and other aspects are also getting higher and higher.

[0046] The display module of an electronic device usually includes a cover plate, a touch control substrate, and a display panel that are stacked in sequence. Among them, the cover plate is located on the outermost side of the electronic device to protect the touch control substrate and the display panel. The touch control substrate is located between the cover plate and the display panel. When the user presses to operate the electronic device, the touch control substrate can identify the pressing position of the user, and then send the position information to the controller in the electronic device, which processes and responds to the user's operation. Both the cover plate and the touch control substrate are arranged on the light-emitting side of the display panel. The light emitted by the display panel passes through the touch control substrate and the cover plate in sequence and shoots out of the electronic device into the user's eyes, enabling the user to see the picture presented by the display module.

[0047] However, for some use scenarios with bright light, the electronic device is prone to glare under the irradiation of ambient light, and the reason for the generation of glare is related to the structure of the display panel: since there are several light-emitting devices on the light-emitting side of the display panel, a reflection structure needs to be set on the light-emitting devices to ensure that the light emitted by the light-emitting devices can shoot out from the light-emitting side of the display panel; when the ambient light irradiates the electronic device, the light in the environment can penetrate the cover plate and the touch control substrate and irradiate the light-emitting side of the display panel. In this way, the ambient light irradiating the display panel can be reflected by the reflection structure of the light-emitting device, and the reflected light passes through the touch control substrate and the cover plate and shoots out to form glare. If this part of the reflected light enters the user's eyes, it is easy to make the user's eyes feel stinging or uncomfortable.

[0048] In the related art, an anti-reflection film layer structure is additionally provided on the surface of the cover plate to reduce the reflection of light and reduce the glare problem of the display module. However, the addition of this anti-reflection film layer structure not only increases the material cost of the display module, but also increases the process of the display module, resulting in a relatively high cost of the display module.

[0049] Based on this, a touch control substrate and a display module are provided in the embodiments of the present application to solve the above problems.

[0050] Figure 1 Schematic diagram of the first insulating layer and the first touch control electrode layer provided by the embodiment of the present application, Figure 2 Schematic diagram of the propagation of ambient light in the first insulating layer and the first touch control electrode layer provided by the embodiment of the present application, Figure 3 Schematic diagram of the touch control substrate provided by the embodiment of the present application. Please refer to the following together Figures 1 to 3 Now, the touch control substrate 200 provided by the embodiment of the present application will be described.

[0051] The embodiment of the present application provides a touch control substrate 200, which is disposed on one side of a display panel 300. The touch control substrate 200 includes a first touch control electrode layer 2 and a first insulating layer 1 which are stacked. The first insulating layer 1 includes a first anti-reflection layer 11 and a second anti-reflection layer 12 which is stacked and disposed on a side of the first anti-reflection layer 11 away from the display panel 300. The second anti-reflection layer 12 has a refractive index of n=1 and a refractive index of n=2, respectively. 1 and n 2 , n 1 >n 2 , so that the first insulating layer 1 can at least eliminate a portion of the incident light along the first insulating layer 1 toward the first touch electrode layer 2 .

[0052] It should be noted that the touch substrate 200 is applied to the display module, and the light emitted by the display module passes through the touch substrate 200 and enters the user's eyes, so that the user can see the picture displayed by the display module. Therefore, the first touch electrode layer 2 has the ability to be penetrated by light, that is, the light can pass through the first touch electrode layer 2. Exemplarily, the first touch electrode layer 2 includes a touch electrode formed by a conductive network component and a solidified material supporting the conductive network component. The shape of the conductive network component can be designed so that the light can propagate through the solidified material. In some embodiments, the conductive network component of the first touch electrode layer 2 can contain metal aluminum (Al) and metal titanium (Ti).

[0053] The first anti-reflection layer 11 and the second anti-reflection layer 12 are both parts of the first insulating layer 1 , and both the first anti-reflection layer 11 and the second anti-reflection layer 12 are insulating structures to achieve the insulating effect of the first insulating layer 1 .

[0054] The touch substrate 200 is disposed on one side of the display panel 300 , which means that the touch substrate 200 is located on the light emitting side of the display panel 300 , so that the light emitted by the display panel 300 can pass through the touch substrate 200 and be emitted.

[0055] The stacked first touch electrode layer 2 and the first insulating layer 1 may mean that the first touch electrode layer 2 is located between the first insulating layer 1 and the display panel 300 , or may mean that the first insulating layer 1 is located between the first touch electrode layer 2 and the display panel 300 .

[0056] The first insulating layer 1 can at least eliminate a portion of the incident light along the direction of the first insulating layer 1 pointing to the first touch electrode layer 2, which means that the light incident on the first anti-reflection layer 11 by the second anti-reflection layer 12 can produce a half-wave loss, so that the incident light incident on the first insulating layer 1 from the environment can interfere with each other in the first insulating layer 1.

[0057] The half-wave loss of light refers to the phenomenon that when light travels from an optically thinner medium to an optically denser medium, during the reflection process, the vibration direction of the reflected light when leaving the reflection point is opposite to that of the incident light when reaching the incident point. Or, the phase of the reflected light mutates by π relative to the incident light. Among them, the medium with a higher refractive index is the optically denser medium, and the medium with a lower refractive index is the optically thinner medium. In this embodiment, the first anti-reflection layer 11 corresponds to the optically denser medium, and the second anti-reflection layer 12 corresponds to the optically thinner medium. Therefore, there will be a half-wave loss for the light incident from the second anti-reflection layer 12 into the first anti-reflection layer 11.

[0058] Light is an electromagnetic wave, and destructive interference is an important phenomenon of waves. When two waves meet in space, if the crest of one wave meets the trough of the other wave, destructive interference will occur in this case. From a mathematical perspective, when the phase difference between two waves is an odd multiple of half a wavelength, the amplitude of the superposition of the two waves becomes smaller. If the amplitudes of the two waves are equal and the phase difference is π (an odd multiple of half a wavelength), the resultant amplitude after superposition is zero, and this situation is complete destructive interference. For example, in the Young's double-slit interference experiment, destructive interference occurs at certain positions on the screen, making these positions appear as dark fringes; in thin-film interference, if the thickness of the thin film makes the optical path difference of the two reflected light rays satisfy the condition of destructive interference, then dark fringes or dark regions are observed at the corresponding positions; in this embodiment, the reflected light formed by the reflection of the incident light from the side of the first anti-reflection layer 11 away from the second anti-reflection layer 12 can cancel out the incident light, thereby achieving the elimination of a part of the incident light.

[0059] By disposing the second anti-reflection layer 12 on the side of the first anti-reflection layer 11 away from the display panel 300, and the refractive index of the first anti-reflection layer 11 is higher than that of the second anti-reflection layer 12, it can make the light incident from the second anti-reflection layer 12 into the first anti-reflection layer 11 generate a half-wave loss, so that the incident light from the environment into the first insulating layer 1 can have a destructive interference phenomenon in the first insulating layer 1. In this way, the first insulating layer 1 can eliminate a part of the incident light (i.e., the environmental light incident into the touch control substrate 200) incident into the touch control substrate 200, reduce the environmental light irradiating the surface of the light-emitting side of the display panel 300, so as to reduce the reflection of the display panel 300 to the environmental light and reduce the probability of glare generation; the first insulating layer 1 is divided into a stacked first anti-reflection layer 11 and a second anti-reflection layer 12, that is, by optimizing the original insulating structure of the touch control substrate 200 to adjust the anti-reflection ability of the touch control substrate 200 to light. Both the first anti-reflection layer 11 and the second anti-reflection layer 12 have the ability to reduce light reflection and insulation, that is, the first insulating layer 1 simultaneously has the insulation ability and the anti-reflection ability, which is beneficial to reducing the costs of the touch control substrate 200 and the display module.

[0060] In the related art, for a display panel 300 with uneven surface molecular structure, when it is irradiated by ambient light, light refraction, scattering and interference phenomena occur, which easily cause rainbow patterns to appear on the display panel 300. However, the touch control substrate 200 in the embodiments of the present application can eliminate a part of the light incident on the display module by using the principle of destructive interference, thereby reducing the ambient light incident on the display panel 300, that is, reducing the ambient light received by the display panel 300 in the display module. In this way, the probability of rainbow patterns appearing on the display panel 300 can be reduced, and the picture quality of the display module can be improved.

[0061] It should be noted that since the refractive index n of the first antireflection layer 11 1 is greater than the refractive index n of the second antireflection layer 12 2 , for the light emitted from the display module, its propagation direction is from the first antireflection layer 11 to the second antireflection layer 12, that is, the light emitted from the display module enters from an optically denser medium into an optically thinner medium. In this case, there is no half-wave loss for the light emitted from the display module. Therefore, the settings of the first antireflection layer 11 and the second antireflection layer 12 do not affect the propagation of the light emitted from the display module, that is, the settings of the first antireflection layer 11 and the second antireflection layer 12 do not affect the picture effect of the display module.

[0062] Figure 4 It is a schematic diagram of the touch control substrate 200 and the thin film encapsulation layer 100 provided by an embodiment of the present application. Among them, the thin film encapsulation layer 100 can be a part of the display panel 300. Refer to Figure 4 , in some embodiments, the first insulating layer 1 is disposed on the side of the first touch control electrode layer 2 away from the display panel 300; it can be understood that the first touch control electrode layer 3 includes touch control electrodes formed by conductive network members and a curing material for supporting the conductive network members. The conductive network members are metal materials, that is, there is metal in the first touch control electrode layer 2. Disposing the first insulating layer 1 on the side of the first touch control electrode layer 2 away from the display panel 300 can not only reduce the amount of ambient light incident on the display panel 300, but also reduce the amount of ambient light incident on the first touch control electrode layer 2, thereby reducing the reflection of ambient light by the metal material in the first touch control electrode layer 2 and further weakening the glare phenomenon.

[0063] In this embodiment, the touch control substrate 200 further includes a second touch control electrode layer 3, a second insulating layer 4 and a third insulating layer 5. Refer to Figure 4, along the direction from the display panel 300 to the touch substrate 200, the third insulating layer 5, the first touch electrode layer 2, the second insulating layer 4, the second touch electrode layer 3 and the first insulating layer 1 are stacked in sequence. In this embodiment, the first insulating layer 1 is arranged on the outermost side of the touch substrate 200 (the side of the touch substrate 200 facing the display panel 300 is the inner side, and the side away from the display panel 300 is the outer side). In this way, the amount of light entering the first touch electrode layer 2 and the second touch electrode layer 3 can be reduced, thereby reducing the overall reflection of the touch substrate 200 to the ambient light. In addition, the first insulating layer 1 can also be used to insulate the second touch electrode layer 3 from the external environment, reducing the probability of the second touch electrode layer 3 contacting with the external conductive material and causing a short circuit. In this embodiment, the first insulating layer 1 can also serve as a protective layer of the touch substrate 200, playing a protective role for the touch substrate 200, and the third insulating layer 5 can also serve as a base layer of the touch substrate 200, playing a supporting role for the touch substrate 200.

[0064] It should be noted that the touch substrate 200 is applied to the display module, and the light emitted by the display module passes through the touch substrate 200 and enters the user's eyes, so that the user can see the picture displayed by the display module. Therefore, the second touch electrode layer 3 also has the ability to be penetrated by light, that is, the light can pass through the second touch electrode layer 3. Exemplarily, the structure of the second touch electrode layer 3 can be similar to the first touch electrode layer 2. The second touch electrode layer 3 includes a touch electrode formed by a conductive network component and a solidified material supporting the conductive network component. The shape of the conductive network component can be designed so that light can propagate through the solidified material.

[0065] Figure 5 FIG. 1 is a schematic diagram of a touch substrate 200 and a thin film encapsulation layer 100 provided in another embodiment of the present application, wherein the thin film encapsulation layer 100 may be a part of a display panel 300. In other embodiments, referring to FIG. Figure 5 The touch substrate 200 also includes a second touch electrode layer 3, which is arranged on the side of the first insulating layer 1 away from the first touch electrode layer 2, that is, the first insulating layer 1 is located between the second touch electrode layer 3 and the first touch electrode layer 2; at this time, the first insulating layer 1 can insulate the first touch electrode layer 2 and the second touch electrode layer 3, reducing the probability of contact and conduction between the first touch electrode layer 2 and the second touch electrode layer 3, and the first insulating layer 1 can reduce the amount of light entering the first touch electrode layer 2, thereby reducing the overall reflection of ambient light by the touch substrate 200.

[0066] In this embodiment, the touch control substrate 200 further includes a second insulating layer 4 and a third insulating layer 5. Along the direction from the display panel 300 to the touch control substrate 200, the third insulating layer 5, the first touch control electrode layer 2, the first insulating layer 1, the second touch control electrode layer 3, and the second insulating layer 4 are sequentially stacked. At this time, the second insulating layer 4 can also serve as a protective layer of the touch control substrate 200, playing a role in protecting the touch control substrate 200, and the third insulating layer 5 can also serve as a base layer of the touch control substrate 200, playing a role in supporting the touch control substrate 200.

[0067] Figure 6 It is a schematic diagram of the touch control substrate 200 and the thin film encapsulation layer 100 provided by another embodiment of the present application. Among them, the thin film encapsulation layer 100 can be a part of the display panel 300. Refer to Figure 6 , the first insulating layer 1 is disposed between the first touch control electrode layer 2 and the display panel 300, that is, the first insulating layer 1 is disposed on the side of the first touch control electrode layer 2 close to the display panel 300. At this time, the first insulating layer 1 can insulate the first touch control electrode layer 2 from the display panel 300, and can reduce the amount of light incident on the display panel 300 and the reflection of light by the display panel 300. In this way, the touch control substrate 200 can also achieve an anti-reflection effect. In addition, the first insulating layer 1 can also play a role in carrying the first touch control electrode layer 2 and connecting the first touch control electrode layer to the display panel.

[0068] In this embodiment, the touch control substrate 200 further includes a second touch control electrode layer 3, a second insulating layer 4, and a third insulating layer 5. Along the direction from the display panel 300 to the touch control substrate 200, the first insulating layer 1, the first touch control electrode layer 2, the second insulating layer 4, the second touch control electrode layer 3, and the third insulating layer 5 are sequentially stacked. The functions of the second insulating layer 4, the second touch control electrode layer 3, and the third insulating layer 5 enable the first insulating layer 1 to support the remaining film layers of the touch control substrate 200 and connect the remaining film layers of the touch control substrate 200 to the display panel 300. In this embodiment, the third insulating layer 5 can also serve as a protective layer of the touch control substrate 200, playing a role in protecting the touch control substrate 200.

[0069] Of course, in any of the above embodiments, the structure of the second insulating layer 4 may be similar to that of the first insulating layer 1. That is to say, the second insulating layer 4 may also include at least two antireflection layers. In this way, the phenomenon of destructive interference can also occur within the second insulating layer 4, so that the second insulating layer 4 can also play a role in reducing light reflection. The wavelength of the ambient light targeted by the second insulating layer 4 may be equal to the wavelength of the ambient light targeted by the first insulating layer 1, that is, the second insulating layer 4 and the first insulating layer 1 reduce reflection for the same type of light. Of course, the wavelength of the ambient light targeted by the second insulating layer 4 may not be equal to the wavelength of the ambient light targeted by the first insulating layer 1. In this way, the second insulating layer 4 and the first insulating layer 1 can reduce reflection for different types of light respectively.

[0070] Of course, in any of the above embodiments, the structure of the third insulating layer 5 may be similar to that of the first insulating layer 1. That is to say, the third insulating layer 5 may also include at least two antireflection layers. In this way, the phenomenon of destructive interference can also occur within the third insulating layer 5, so that the third insulating layer 5 can also play a role in reducing light reflection. The wavelength of the ambient light targeted by the third insulating layer 5 may be equal to the wavelength of the ambient light targeted by the first insulating layer 1, that is, the third insulating layer 5 and the first insulating layer 1 reduce reflection for the same type of light. Of course, the wavelength of the ambient light targeted by the third insulating layer 5 may not be equal to the wavelength of the ambient light targeted by the first insulating layer 1. In this way, the third insulating layer 54 and the first insulating layer 1 can reduce reflection for different types of light respectively.

[0071] In some embodiments, both the second insulating layer 4 and the third insulating layer 5 include antireflection layers. At this time, the wavelength of the ambient light targeted by the second insulating layer 4, the wavelength of the ambient light targeted by the third insulating layer 5, and the wavelength of the ambient light targeted by the first insulating layer 1 may be equal, or the wavelength of the ambient light targeted by the second insulating layer 4 may be equal to the wavelength of the ambient light targeted by the third insulating layer 5 and not equal to the wavelength of the ambient light targeted by the first insulating layer 1, or the wavelength of the ambient light targeted by the second insulating layer 4 may be equal to the wavelength of the ambient light targeted by the first insulating layer 1 and not equal to the wavelength of the ambient light targeted by the third insulating layer 5. The selection range of the wavelength of the ambient light can be selected according to actual needs.

[0072] In some embodiments, the thicknesses of the first insulating layer 1, the second insulating layer 4, and the third insulating layer 5 may be equal or unequal.

[0073] In some embodiments, the second insulating layer 4 and the third insulating layer 5 may also not include antireflection layers.

[0074] In some embodiments, the thickness of the first antireflection layer 11 is t 1 , n 1 *t 1 = λ / 4, where λ is the wavelength of the incident light. More specifically, λ is the wavelength of the ambient light in the direction from the first insulating layer 1 to the first touch electrode layer 2. That is, the refractive index n 1 of the first antireflection layer 11 multiplied by its thickness t 1 is equal to one quarter of the wavelength λ of the incident light.

[0075] The above embodiments will be described below with reference to the drawings.

[0076] Referring to Figure 2 , taking the case where the first insulating layer 1 is disposed on the side of the first touch electrode layer 2 away from the display panel 300 as an example, that is, in this embodiment, the first antireflection layer 11 is located between the second antireflection layer 12 and the first touch electrode layer 2. The incident light I 0 in the second antireflection layer 12 is reflected at the upper and lower interfaces of the first antireflection layer 11, forming light rays I 1 , I 2 and I 3 . Interference will occur between the reflected light rays. If the first antireflection layer 11 and the first touch electrode layer 2 are regarded as a thin film, the reflectance R1 of the thin film jointly formed by the first antireflection layer 11 and the first touch electrode layer 2 can be calculated by the formula (1):

[0077]

[0078] In formula (1), r 1 is the reflection coefficient of the upper surface of the thin film jointly formed by the first antireflection layer 11 and the first touch electrode layer 2 (i.e., the surface of the first antireflection layer 11 away from the first touch electrode layer 2), and r 2 is the reflection coefficient of the lower surface of the thin film jointly formed by the first antireflection layer 11 and the first touch electrode layer 2 (i.e., the surface of the first touch electrode layer 2 away from the first antireflection layer 11), is the phase angle caused by the thickness of the first antireflection layer 11, where r 1 and r 2 satisfy the following conditions:

[0079]

[0080] In formulas (2) and (3), n 2 is the refractive index of the second antireflection layer 12, n 1 is the refractive index of the first antireflection layer 11, and n 0 is the refractive index of the first touch electrode layer 2.

[0081] When the incident light is perpendicularly incident, substituting Equation (2) and Equation (3) into Equation (1) gives Equation (4):

[0082]

[0083] To achieve a good antireflection effect of the film layer, the reflectivity R1 of the incident light on the surface of the second antireflection layer 12 can be made 0. Thus, Equation (5) should be satisfied:

[0084]

[0085] In addition, when the incident light passes through the surface of the first antireflection layer 11 facing the second antireflection layer 12, part of it is reflected and part is transmitted. When the transmitted light passes through the surface of the first antireflection layer 11 facing away from the second antireflection layer 12, part of it is reflected again. This reflected part cancels out the original reflected light when passing through the surface of the first antireflection layer 11 facing the second antireflection layer 12. This requires a phase difference of (2k + 1)π between the reflected light and the transmitted light, where k is the number of times the incident light is reflected, k is an integer, and k > 0. The value of k can be 0, 1, 2, etc. When the incident light is perpendicularly incident, the transmitted light travels 2t 1 more than the reflected light 1 in terms of the path, so the optical path difference is 2(n 1 t

[0086]

[0087] Based on Equation (5), the refractive index n 1 of the first antireflection layer 11 can be made greater than the refractive index n 2 of the second antireflection layer 12 and less than the refractive index n 0 of the first touch electrode layer 2 to improve the antireflection effect of the first antireflection layer 11; when n 0 , n 1 and n 2 satisfy Equation (5), theoretically, the reflected lights on the surface of the first antireflection layer 11 facing the second antireflection layer 12 and the surface of the first antireflection layer 11 facing away from the second antireflection layer 12 completely interfere and cancel each other out. The so-called cancellation of the reflected light on the surface of the first antireflection layer 11 facing the second antireflection layer 12 and the light on the surface of the first antireflection layer 11 facing away from the second antireflection layer 12 means canceling the reflected light on the surface of the first antireflection layer 11 facing the second antireflection layer 12, thereby reducing the overall reflection of the touch substrate 200 to ambient light.

[0088] On the other hand, based on Equation (6), the antireflection effect can be adjusted by adjusting the actual thickness of the first antireflection layer 11. When the number of reflections of the incident light is 0, that is, k = 0, the minimum thickness t of the first antireflection layer 11 1 can be expressed as Equation (7):

[0089] t 1 = λ / (4n 1 ) (7)

[0090] By transforming Equation (7), we can obtain:

[0091] n 1 *t 1 = λ / 4;

[0092] Therefore, setting the product of the refractive index n of the first antireflection layer 11 1 and its thickness t 1 to be equal to one-fourth of the wavelength λ of the incident light can cause the phenomenon of destructive interference to occur within the first insulating layer 1. By using the cooperation of the first antireflection layer 11 and the second antireflection layer 12, the light entering the touch control substrate 200 from the environment can be eliminated, thereby reducing the light irradiating the display panel 300 and further weakening the glare phenomenon.

[0093] In some embodiments, the thickness t of the second antireflection layer 12 2 , n 2 *t 2 = λ / 4, that is, the product of the refractive index n of the second antireflection layer 12 2 and its thickness t 2 is equal to one-fourth of the wavelength λ of the incident light. In this embodiment, the touch control substrate 200 is applied to the display module of an electronic device, and a cover plate 400 is further provided on the side of the touch control substrate 200 facing away from the display panel 300. When the refractive index of the cover plate 400 is less than the refractive index n of the second antireflection layer 12 2 , the light entering the second antireflection layer 12 from the cover plate 400 will also experience a half-wave loss. Combining the derivation process of n 1 *t 1 = λ / 4 in the above embodiment, it can be similarly obtained that n 2 *t 2 = λ / 4, that is, when n 2 *t 2 = λ / 4, the phenomenon of destructive interference can occur within the second antireflection layer 12, so that the light entering the touch control substrate 200 from the environment can be further eliminated, and the glare phenomenon can be further weakened.

[0094] In some embodiments, n 1 *t 1 = n 2 *t 2= λ / 4, so that the phenomenon of destructive interference can occur in both the first anti-reflection layer 11 and the second anti-reflection layer 12. In this way, the light entering the touch control substrate 200 from the environment can be further eliminated, and the phenomenon of glare can be further reduced.

[0095] It can be understood that for the ambient light incident vertically, the principle of destructive interference of light can be used to eliminate the light without generating glare. However, in the actual use scenario, the incident direction of the ambient light is diverse. That is to say, not all the ambient light is perpendicular to the touch control substrate 200, and there is an acute angle between a part of the ambient light and the surface of the touch control substrate 200. In this embodiment, the thickness t 1 of the first anti-reflection layer 11 and its refractive index n 1 The product (i.e., n 1 t 1 ) and the thickness t 2 of the second anti-reflection layer 12 and its refractive index n 2 The product (i.e., n 2 t 2 ) are both equal to one-fourth of the incident light wavelength λ. In this way, both the first anti-reflection layer 11 and the second anti-reflection layer 12 can use the principle of destructive interference of light to reduce the light reflection, so that the amount of reflected ambient light can be further reduced, and the generation of glare can be reduced.

[0096] Figure 7 This is a schematic diagram of the touch control substrate 200 and the thin film encapsulation layer 100 provided by another embodiment of the present application. Among them, the thin film encapsulation layer is a part of the display panel 300. Refer to Figure 7 , the first insulating layer 1 further includes a third anti-reflection layer 13. The third anti-reflection layer 13 is located on the side of the second anti-reflection layer 12 away from the first anti-reflection layer 11. The refractive index of the third anti-reflection layer 13 is n 3 , n 3 < n 2 . By setting n 3 < n 2 , for both the second anti-reflection layer 12 and the third anti-reflection layer 13, the second anti-reflection layer 12 corresponds to an optically denser medium, and the third anti-reflection layer 13 corresponds to an optically thinner medium. Therefore, there will be a half-wave loss for the light entering the second anti-reflection layer 12 from the third anti-reflection layer 13. In this way, in the use scenario of the touch control substrate 200 above, even if the refractive index of the cover plate 400 is greater than the refractive index n 2 of the second anti-reflection layer 12, under the action of the third anti-reflection layer 13, the second anti-reflection layer 12 can still produce the phenomenon of destructive interference.

[0097] In some embodiments, the thickness of the third anti-reflection layer 13 is t 3 , and n 3 * t3 = λ / 4. Thus, in the specific usage scenario of the touch control substrate 200, when the refractive index of the cover plate 400 is less than the refractive index n of the third anti-reflection layer 13 3 , the light rays entering the third anti-reflection layer 13 from the cover plate 400 will also experience a half-wave loss. Combining with the derivation process of n 1 *t 1 = λ / 4 in the above embodiments, by the same token, it can be obtained that n 3 *t 3 = λ / 4, that is, n 1 *t 1 = n 2 *t 2 = n 3 *t 3 = λ / 4, at this time, the phenomenon of destructive interference can occur in the first anti-reflection layer 11, the second anti-reflection layer 12 and the third anti-reflection layer 13. In this way, the light rays entering the touch control substrate 200 from the environment can be further eliminated, and the phenomenon of glare can be further reduced.

[0098] In some embodiments, n 2 = 0.5 * (n 1 + n 3 ), that is, the refractive index n 2 of the second anti-reflection layer 12 is half of the sum of the refractive index values of the first anti-reflection layer 11 and the third anti-reflection layer 13. In this way, the magnitudes of the reflected waves on the upper surface (i.e., the surface of the second anti-reflection layer 12 close to the third anti-reflection layer 13) and the lower surface (i.e., the b side surface of the second anti-reflection layer 12 close to the first anti-reflection layer 11) of the second anti-reflection layer 12 are equal, and they can cancel each other out after destructive interference, which can further improve the anti-reflection ability of the touch control substrate 200.

[0099] Of course, in other embodiments, the first insulating layer 1 may further include a fourth anti-reflection layer, a fifth anti-reflection layer, etc. That is, the number of anti-reflection layers in the first insulating layer 1 can be 4, 5, 6 or even more. The number of anti-reflection layers in the first insulating layer 1 can be designed according to actual needs, and this embodiment does not limit it here. However, it should be noted that when adding anti-reflection layers, the product of the refractive index of each anti-reflection layer and its thickness can be set to be equal to one-fourth of the incident light wavelength λ.

[0100] The thickness of the first insulating layer 1 is t, and t < 10 μm. That is to say, the total thickness of all the anti-reflection layers in the first insulating layer 1 is less than 10 μm. Referring to Figure 4 , when the first insulating layer 1 only includes the first anti-reflection layer 11 and the second anti-reflection layer 12, t = t 1 + t 2 , referring to Figure 7, when the first insulating layer 1 includes a first antireflection layer 11, a second antireflection layer 12, and a third antireflection layer 13, t = t 1 + t 2 + t 3 ; By setting the thickness of the first insulating layer 1 to be less than 10 μm, the influence of the thickness of the first insulating layer 1 on the thickness of the touch control substrate 200 can be reduced, and the situation where the overall size of the touch control substrate 200 is too large due to the excessive thickness of the first insulating layer 1 can be avoided. Exemplarily, the thickness of the first insulating layer can be 9.9 μm, 9.5 μm, 9.0 μm, 8.5 μm, 7.5 μm, etc.

[0101] It should be noted that since the destructive interference of light is related to the thickness of the film layer, in order to ensure the elimination effect on the ambient light incident on the touch control substrate 200, the thicknesses of the first antireflection layer 11, the second antireflection layer 12, and other existing antireflection layers need to be uniformly set everywhere. In this way, the destructive interference generation conditions can be met everywhere for all antireflection layers, ensuring that the first insulating layer 1 can reduce the reflection of ambient light using the principle of destructive interference.

[0102] In this embodiment, the product of the thickness t 1 of the first antireflection layer 11 and its refractive index n 1 (i.e., n 1 * t 1 ), and the product of the thickness t 2 of the second antireflection layer 12 and its refractive index n 2 (i.e., n 2 * t 2 ) are both equal to one - quarter of the light wavelength λ. In this way, both the first antireflection layer 11 and the second antireflection layer 12 can reduce the reflection of ambient light on the touch control substrate 200 using the principle of destructive interference. That is to say, in this embodiment, the specific values of the thickness t 1 of the first antireflection layer 11 and its refractive index n 1 , and the thickness t 2 of the second antireflection layer 12 and its refractive index n 2 are not actually limited. For some usage scenarios that require a thinner touch control substrate, compensation can be made by adjusting the refractive index n 1 of the first antireflection layer 11 and the refractive index n 1 of the second antireflection layer 12, so that the product of the thickness t 1 of the first antireflection layer 11 and its refractive index n 1 (i.e., n 1 * t 1 ) and the product of the thickness t 2 of the second antireflection layer 12 and its refractive index n 2 (i.e., n 2 * t2 ) can both be equal to one - quarter of the optical wavelength λ, ensuring the anti - reflection effect of the first insulating layer 1 on ambient light.

[0103] In this embodiment, the touch control substrate 200 is applied to the display module. It can be understood that the refractive index n of the first anti - reflection layer 11 1 and the refractive index n of the second anti - reflection layer 12 2 will have various impacts on the display module. Exemplarily, the impacts of the refractive index on the display module include the following aspects: 1. Color balance: It affects the spectral characteristics of light, thereby changing the transmission and reflection ratios of light with different wavelengths, and further affecting the color performance. If the refractive index is not appropriate, color deviation may occur; 2. Imaging quality: An appropriate refractive index helps to reduce optical aberrations, improve the clarity and contrast of imaging, and can reduce the influence of stray light, avoiding unnecessary halos and ghost images in imaging; 3. Functionality: The refractive index affects the surface characteristics of the film layer, thereby affecting its waterproof and anti - fouling properties, and also affects the hardness and wear resistance of the film layer. Therefore, for some usage scenarios with strict requirements for refractive index, the thickness t of the first anti - reflection layer 11 1 and the thickness t of the second anti - reflection layer 12 2 can be adjusted for compensation, so that the product of the thickness t of the first anti - reflection layer 11 1 and its refractive index n 1 (i.e., n 1 *t 1 ) and the product of the thickness t of the second anti - reflection layer 12 2 and its refractive index n 2 (i.e., n 2 *t 2 ) can both be equal to one - quarter of the incident light wavelength λ, ensuring the anti - reflection effect of the first insulating layer 1 on ambient light.

[0104] In some embodiments, the refractive index of the first anti - reflection layer 11 is n 1 , and the refractive index of the second anti - reflection layer 12 is n 2 , where n 1 = 1.5 - 2.4, n 2 = 1 - 2. By setting the refractive index of the first anti - reflection layer 11 as n 1 = 1.5 - 2.4 and the refractive index of the second anti - reflection layer 12 as n 2 = 1 - 2, the reflection of the touch control substrate 200 to light can be minimized using the principle of destructive interference, thereby enhancing the user experience. Exemplarily, n 1 can be 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3 or 2.4, n 2It can be 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2. It should be noted that regardless of n 1 and n 2 take any value, it is necessary to ensure that n 1 > n 2 . In some embodiments, while ensuring that the refractive index n 2 of the second anti-reflection layer 12 remains unchanged, as the refractive index n 1 of the first anti-reflection layer 11 increases, the reflection coefficient of the first insulating layer 1 gradually decreases. That is to say, while ensuring that the refractive index n 2 of the second anti-reflection layer 12 is constant, the higher the refractive index n 1 of the first anti-reflection layer 11, the better the anti-reflection effect of the first insulating layer 1 on ambient light, and the more capable it is of weakening the glare phenomenon.

[0105] In some embodiments, the thickness of the first anti-reflection layer 11 is t 1 , t 1 = 20 nm to 300 nm. By setting and limiting the thickness of the first anti-reflection layer 11, the thickness of the first anti-reflection layer 11 can be made to be within a suitable range, reducing the situation where the overall size of the touch control substrate 200 is too large due to the excessive thickness of the first anti-reflection layer 11, and also reducing the situation where the first insulating layer 1 is prone to breakage due to the too thin thickness of the first anti-reflection layer 11. That is, it can reduce the adverse effects caused by the excessive or too thin thickness of the first anti-reflection layer 11.

[0106] The thickness of the second anti-reflection layer 12 is t 2 , t 2 = 30 nm to 400 nm. By setting and limiting the thickness of the second anti-reflection layer 12, the thickness of the second anti-reflection layer 12 can be made to be within a suitable range, reducing the situation where the overall size of the touch control substrate 200 is too large due to the excessive thickness of the second anti-reflection layer 12, and also reducing the situation where the first insulating layer 1 is prone to breakage due to the too thin thickness of the second anti-reflection layer 12. That is, it can reduce the adverse effects caused by the excessive or too thin thickness of the second anti-reflection layer 12. In this embodiment, since the refractive index of the second anti-reflection layer 12 is less than that of the first anti-reflection layer 11, the end point values of the thickness selection range of the second anti-reflection layer 12 are greater than those of the first anti-reflection layer 11.

[0107] In some embodiments, both the first anti-reflection layer 11 and the second anti-reflection layer 12 are nitride layers, and the mass proportion of nitrogen element in the first anti-reflection layer 11 is less than that in the second anti-reflection layer 12. By adjusting the nitrogen element content of the first anti-reflection layer 11 and the second anti-reflection layer 12, the refractive indices of the first anti-reflection layer 11 and the second anti-reflection layer 12 can be adjusted. Among them, the higher the nitrogen element content, the lower the refractive index of the material. Therefore, the refractive indices of the first anti-reflection layer 11 and the second anti-reflection layer 12 can be adjusted by controlling the nitrogen element content of the material.

[0108] In some embodiments, the material of the nitride layer includes at least one of silicon oxynitride, silicon nitride, and silicon oxide. It should be noted that silicon oxynitride, silicon nitride, and silicon oxide do not refer to separate film layers, but to the raw material components that make up the film layer. The nitride layer can only contain one of silicon oxynitride, silicon nitride, and silicon oxide, or it can be a mixture of silicon oxynitride, silicon nitride, and silicon oxide, or it can also be a mixture of any two of silicon oxynitride, silicon nitride, and silicon oxide. In this embodiment, silicon oxynitride, silicon oxide, and silicon nitride are used to manufacture the first anti-reflection layer 11 and the second anti-reflection layer 12. The refractive index of the film layer containing silicon nitride, oxide, or oxynitride can gradually change between 1.45 and 2, so as to meet the requirements for the refractive indices of the first anti-reflection layer 11 and the second anti-reflection layer 12. Moreover, silicon oxynitride, silicon nitride, and silicon oxide have low costs, which can reduce the material costs of the first anti-reflection layer 11 and the second anti-reflection layer 12, that is, the cost of the touch control substrate 200 can be reduced. Exemplarily, the refractive index change of the film layer can be achieved by controlling the flow rate of different gases introduced during preparation.

[0109] The material of the nitride layer includes at least one of silicon oxynitride, silicon nitride, and silicon oxide, that is, both the first anti-reflection layer 11 and the second anti-reflection layer 12 in the first insulating layer 1 include SiO x N y , where x≥0, y≥0, and SiO x N y can form silicon nitride, oxide, or oxynitride by the difference in the atomic ratio of O x N y . By adjusting the nitrogen element content in the first anti-reflection layer and the second anti-reflection layer, it is equivalent to adjusting the mass proportion of silicon nitride, oxide, and oxynitride in the first anti-reflection layer 11 and the second anti-reflection layer 12. In some embodiments, the first anti-reflection layer can contain more silicon oxide and less silicon oxynitride and silicon nitride, and the second anti-reflection layer can contain less silicon oxide and more silicon oxynitride and silicon nitride. In this way, the mass proportion of nitrogen element in the first anti-reflection layer 11 is less than that in the second anti-reflection layer 12, ensuring that the reflectivity of the first anti-reflection layer 11 is higher than that of the second anti-reflection layer 12.

[0110] Exemplarily, SiO x N y compounds can be SiO 0.7 N 0.3 、SiO 0.5 N 0.5 、SiO 0.3 N 0.7 and SiO 0.2 N 0.8 。

[0111] In other embodiments, the first insulating layer 1 can also be made of inorganic materials such as aluminum nitride oxide, zirconium oxide, silicon carbide, graphene, etc. It is only necessary to select materials with adjustable element ratios to prepare a film layer with a refractive index change. By using inorganic materials to prepare the first insulating layer 11, it can not only reduce light reflection, but also block water vapor and oxygen, improving the encapsulation effect of the touch control substrate 200. Of course, organic polymer materials can also be selected to prepare the first insulating layer 1. According to the specific materials selected, the first insulating layer 1 can be formed by sputtering, deposition, coating, laminating, etc. This embodiment does not limit this.

[0112] Of course, in other embodiments, the main material components of the first antireflection layer 11 and the second antireflection layer 12 can be different. For example, the first antireflection layer 11 contains silicon nitride oxide, while the second antireflection layer 12 contains aluminum nitride oxide, zirconium oxide, silicon carbide, graphene, etc., or the first antireflection layer 11 contains aluminum nitride oxide, while the second antireflection layer 12 contains silicon nitride oxide, zirconium oxide, silicon carbide, graphene, etc., or the first antireflection layer 11 contains aluminum nitride oxide, zirconium oxide, silicon carbide, graphene, etc., and the second antireflection layer 12 contains silicon nitride oxide.

[0113] In some embodiments, the touch control substrate 200 is designed for antireflection of visible light. At this time, 380nm ≤ λ ≤ 780nm; in this way, the reflection ability of the touch control substrate 200 to visible light can be reduced, and the glare problem caused by the reflection of visible light by the touch control substrate 200 can be reduced, so that users can still clearly see the screen content outdoors or in an environment with strong light irradiation. Exemplarily, the green light wavelength is 500nm - 560nm, the yellow light wavelength is 580nm - 595nm, the red light wavelength is 625nm - 740nm, and the blue light wavelength is 470nm - 475nm. The value of λ can be selected according to the wavelength range corresponding to the color light to be eliminated, so as to improve the antireflection ability of the touch control substrate 200 in a specific environment.

[0114] In some embodiments, for the anti-reflection design of visible light, for example, for light with a wavelength of 450 nm, the reflection of the first insulating layer 1 to light of this wavelength can be as low as 2.5%.

[0115] In some embodiments, the touch control substrate 200 is designed for anti-reflection of invisible light. For example, for anti-reflection design of ultraviolet light, at this time, 10 nm ≤ λ ≤ 380 nm. By setting 10 nm ≤ λ ≤ 380 nm, the anti-reflection ability of the touch control substrate 200 to ultraviolet light can be improved, thereby reducing the amount of light reflection of the touch control substrate 200 to ultraviolet light.

[0116] Figure 8 Schematic diagram of a display module provided by an embodiment of the present application, refer to Figure 8 Moreover, an embodiment of the present invention further provides a display module, including a display panel 300 and the touch control substrate 200 in any of the above embodiments. The touch control substrate 200 is laminated on the display panel 300. Since the touch control substrate 200 in the above embodiments can reduce the reflection of light, the display module including this touch control substrate 200 can reduce the reflection of ambient light and reduce the generation of glare. Since the touch control substrate 200 in the above embodiments improves the structure of the original insulating layer, the first insulating layer 1 simultaneously has the functions of insulation and anti-reflection. In this way, the number of film layers of the display module can be reduced, thereby reducing the cost of the display module.

[0117] In the related art, for some display panels 300 with uneven surface molecular structures, when irradiated by ambient light, light refraction, scattering and interference phenomena occur, which easily cause rainbow patterns to appear on the display panel 300. However, the touch control substrate 200 in the embodiments of the present application can use the principle of destructive interference to eliminate a part of the light, reduce the ambient light incident on the display panel, that is, can reduce the ambient light received by the display panel 300 in the display module, so that the probability of rainbow patterns appearing on the display panel 300 can be reduced, and the picture quality of the display module can be improved.

[0118] In some embodiments, the display panel 300 is a flexible display panel, and the touch control substrate 200 is fixed to the flexible display panel. In this way, high integration of the display panel 300 can be achieved, refer to Figure 4 The flexible display panel includes a thin film encapsulation (TFE) layer 100, and the touch control substrate 200 is fixed on the thin film encapsulation layer 100. Exemplarily, refer to Figure 4 The third insulating layer 5 of the touch control substrate 200 can be bonded to the thin film encapsulation layer 100 of the flexible display panel; the thin film encapsulation layer 100 can cover the light-emitting devices of the display panel 300, thereby realizing the protection of the light-emitting devices. The thin film encapsulation layer 100 generally includes an inorganic encapsulation layer and an organic encapsulation layer arranged in a stacked manner, and is used to block the contact of water vapor and oxygen with the light-emitting devices.

[0119] In some other embodiments, the display panel 300 is a rigid display panel. Figure 9 FIG. is a schematic diagram of a display module provided by another embodiment of the present application. Referring to Figure 9 , the display module further includes a packaging board 500 connected to the rigid display panel 300, and the touch control substrate 200 is fixed to the packaging board 500. In this embodiment, the touch control substrate 200 can be bonded to the packaging board 500, and then the packaging board 500 is connected to the rigid display panel, so as to realize the assembly of the display module.

[0120] In some embodiments, the packaging board 500 can be transparent glass, and in some other embodiments, the packaging board 500 can also be a material board such as transparent plastic.

[0121] For any of the above embodiments, according to the driving type, the display module can be an Active Matrix Organic Light-emitting Diode (AMOLED) display module or a Passive Matrix Organic Lightemitting Diode (PMOLED) display module. The substrate material of the display module is selected from one of Polyimide (PI), Polyethylenenaphthalate two formic acid glycol ester (PEN), polyethylene glycol terephthalate (PET), Polyarylate (PAR), Polycarbonate (PC), Polyetherimide (PEI), and Polyethersulfone (PES). The organic light-emitting diode device includes a cathode, an anode, an organic light-emitting layer, a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer, etc. The organic light-emitting diode device can be a Topemitting OLED (TEOLED) device or a Bottom-emitting OLED (BEOLED).

[0122] In some embodiments, the display panel may further include a polarizing layer (not shown in the figure), which is located on the side of the thin film encapsulation layer 100 away from the light-emitting device, that is, the polarizing layer is located between the thin film encapsulation layer 100 and the touch substrate 200. The polarizing layer may be one or more of a phase difference film and a linear polarizing film, such as a quarter wave plate, a half wave plate, etc. The linear polarizing film and the quarter wave plate may be combined into a circular polarizer to convert natural light into right-handed circular polarization or left-handed circular polarization. The material of the polarizing layer may be polyvinyl alcohol (PVA) or a liquid crystal material, etc.

[0123] In this embodiment, the display module also includes a transparent cover plate 400, which is arranged on a side of the touch substrate 200 away from the display panel 300, and the cover plate 400 covers the surface of the touch substrate 200, and the ambient light passes through the cover plate 400 and enters the touch substrate 200; since the touch substrate 200 contains metal elements (mainly concentrated in the first touch electrode layer 2 and the second touch electrode layer 3), the cover plate 400 has a weaker reflective ability to ambient light than the touch substrate 200, and the touch substrate 200 in the embodiment of the present application has anti-reflection ability, so there is no need to add an anti-reflection film layer on the cover plate 400, which can help reduce the cost of the display module.

[0124] In some embodiments, the cover plate 400 may be made of transparent glass, and in other embodiments, the cover plate 400 may be made of transparent plastic or other materials.

[0125] Exemplarily, the display module may include a cover plate 400, a touch substrate 200 and a flexible display panel, wherein the touch substrate 200 is fixed on the thin film encapsulation layer 100 of the flexible display panel, the touch substrate 200 includes a first touch electrode layer 2, a second touch electrode layer 3, a first insulating layer 1, a second insulating layer 4 and a third insulating layer 5, and along the direction from the display panel 300 to the touch substrate 200, the third insulating layer 5, the first touch electrode layer 2, the second insulating layer 4, the second touch electrode layer 3 and the first insulating layer 1 are stacked in sequence. In this embodiment, In the embodiment, the third insulating layer 5 is connected to the thin film encapsulation layer 100 of the flexible display panel, the first insulating layer 1 is arranged on the outermost side of the touch substrate 200 (the side of the touch substrate 200 facing the display panel 300 is the inner side, and the side away from the display panel 300 is the outer side), the first insulating layer 1 includes a first anti-reflection layer 11 and a second anti-reflection layer 12, and the second anti-reflection layer 12 is located on the side of the first anti-reflection layer 11 away from the display panel 300 and is stacked with the first anti-reflection layer, wherein the refractive indices of the first anti-reflection layer 11 and the second anti-reflection layer 12 are n and n, respectively. 1 and n 2 , n 1 >n 2, the thickness of the first anti-reflection layer 11 is t 1 , the thickness of the second anti-reflection layer 12 is t 2 , n 1 *t 1 =n 2 *t 2 =λ / 4, λ is the wavelength of the incident light, more specifically, λ is the wavelength of the ambient light along the first insulating layer 1 pointing to the first touch electrode layer 2, and the refractive index of the first anti-reflection layer 11 is n 1 =1.5-2.4, the refractive index of the second anti-reflection layer 12 is n 2 =1-2, the thickness of the first anti-reflection layer 11 is t 1 , the thickness of the second anti-reflection layer 12 is t 2 , t 1 =20nm~300nm,t 2 =30nm~400nm, the first anti-reflection layer 11 and the second anti-reflection layer both contain SiO x N y , where x ≥ 0, y ≥ 0, SiO x N y The compound can be SiO 0.7 N 0.3 、SiO 0.5 N 0.5 、SiO 0.3 N 0.7 and SiO 0.2 N 0.8 , the wavelength λ of the incident light can be 100nm, 450nm, 470nm, 530nm, 585nm or 700nm.

[0126] This embodiment also provides an electronic device, which includes the display module in any of the above embodiments. Since the display module in any of the above embodiments can reduce the reflection of ambient light and reduce the generation of glare, the electronic device including the display module generates less glare, and the user is less likely to experience eye fatigue due to glare during use; since the display module in any of the above embodiments has a low production cost, the electronic device including the display module has a low production cost, which is conducive to mass production.

[0127] Exemplarily, the electronic device may specifically include but is not limited to at least one of a mobile phone, a tablet computer, an e-book reader, a player, a digital camera, a laptop computer, a car computer, a desktop computer, a set-top box, a smart TV and a wearable device, and the display module can be applied to various electronic devices.

[0128] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A touch control substrate, used for being arranged on one side of a display panel (300), the touch control substrate (200) comprising a first touch control electrode layer (2) and a first insulating layer (1) which are stacked, characterized in that: The first insulating layer (1) comprises: A first anti-reflection layer (11); A second anti-reflection layer (12) is stacked and arranged on a side of the first anti-reflection layer (11) facing away from the display panel (300); wherein The refractive index of the first anti-reflection layer (11) is n1, the refractive index of the second anti-reflection layer (12) is n2, and n1>n2.

2. The touch substrate according to claim 1, wherein: The thickness of the first anti-reflection layer (11) is t1, n1*t1=λ / 4, λ is the wavelength of the incident light; Preferably, the thickness of the second anti-reflection layer (12) is t2, n2*t2=λ / 4; Preferably, n1=1.5-2.4; and / or, n2=1-2; Preferably, t1=20nm-300nm; Preferably, t2=30nm~400nm.

3. The touch substrate according to claim 1, wherein: The first insulating layer (1) further comprises a third anti-reflection layer (13), the third anti-reflection layer (13) being located on a side of the second anti-reflection layer (12) away from the first anti-reflection layer (11), and the refractive index of the third anti-reflection layer (13) being n3, n3<n2; Preferably, n2=0.5*(n1+n3).

4. The touch substrate according to claim 1, wherein: The thickness of the first insulating layer (1) is t, t<10 μm.

5. The touch substrate according to claim 1, wherein: The first anti-reflection layer (11) and the second anti-reflection layer (12) are both nitride layers, and the mass proportion of nitrogen in the first anti-reflection layer (11) is smaller than the mass proportion of nitrogen in the second anti-reflection layer (12).

6. The touch substrate according to claim 5, wherein: The material of the nitride layer includes at least one of silicon oxynitride, silicon nitride and silicon oxide.

7. The touch control substrate according to any one of claims 1 to 6, characterized in that: The first insulating layer (1) is arranged on a side of the first touch electrode layer (2) facing away from the display panel (300).

8. The touch substrate according to claim 7, wherein: The touch control substrate (200) further comprises a second touch control electrode layer (3), wherein the second touch control electrode layer (3) is arranged on a side of the first insulating layer (1) away from the first touch control electrode layer (2); or, The second touch electrode layer (3) is arranged on a side of the first insulating layer (1) facing the first touch electrode layer (2).

9. The touch control substrate according to any one of claims 1 to 6, characterized in that: The first insulating layer (1) is arranged between the first touch electrode layer (2) and the display panel (300).

10. A display module, comprising a display panel (300), characterized in that: It also comprises a touch control substrate (200) as claimed in any one of claims 1 to 12, wherein the touch control substrate (200) is stacked on the display panel (300).

Images