Touch substrate, display module and display device

Abstract

The application discloses a touch substrate, a display module and a display device. The touch substrate comprises a first touch electrode layer, an insulating layer and a second touch electrode layer which are sequentially stacked; the first touch electrode layer comprises a plurality of first touch electrodes which are sequentially arranged along a first direction and extend along a second direction; the second touch electrode layer comprises a plurality of second touch electrodes which are sequentially arranged along the second direction and extend along the first direction; and the first direction and the second direction cross each other. The application can avoid touch abnormality.

Description

Technical Field

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

[0002] With the rapid development of display technology, the penetration rate of smart display products such as mobile phones is also steadily increasing. As the key to enabling the use of smart display products, users have increasingly higher requirements for touch functionality. However, existing display products are prone to touch malfunctions. Summary of the Invention

[0003] This invention provides a touch substrate, a display module, and a display device that can prevent touch malfunctions.

[0004] According to one aspect of the present invention, a touch substrate is provided, comprising: A first touch electrode layer, an insulating layer, and a second touch electrode layer are stacked sequentially. The first touch electrode layer includes a plurality of first touch electrodes arranged sequentially along a first direction, and the first touch electrodes extend along a second direction; The second touch electrode layer includes a plurality of second touch electrodes arranged sequentially along a second direction, and the second touch electrodes extend along a first direction; wherein the first direction and the second direction intersect each other.

[0005] Optionally, the insulating layer has a recessed portion, the orthographic projection of the first touch electrode on the insulating layer is spaced apart from the recessed portion, and the second touch electrode extends into the recessed portion; Optionally, the recess penetrates the insulating layer; Optionally, each of the first touch electrodes includes a plurality of first electrode blocks and a plurality of first connecting portions, the plurality of first electrode blocks being arranged sequentially along a second direction, and adjacent first electrode blocks along the second direction being electrically connected through the first connecting portions; each of the second touch electrodes includes a plurality of second electrode blocks and a plurality of second connecting portions; the plurality of second electrode blocks being arranged sequentially along a first direction, and adjacent second electrode blocks along the first direction being electrically connected through the second connecting portions; at least a portion of the second electrode blocks is located within the recess.

[0006] Optionally, the touch substrate further includes a first virtual portion and a second virtual portion. The first virtual portion is disposed on the same layer as the first touch electrode layer, and the orthographic projection of the first virtual portion on the insulating layer at least partially overlaps with the orthographic projection of the second touch electrode layer on the insulating layer. The second virtual portion is disposed on the same layer as the second touch electrode layer, and the orthographic projection of the second virtual portion on the insulating layer at least partially overlaps with the orthographic projection of the first touch electrode layer on the insulating layer.

[0007] Optionally, each of the first touch electrodes includes a plurality of first electrode blocks and a plurality of first connecting portions, wherein the plurality of first electrode blocks are arranged sequentially along a second direction, and adjacent first electrode blocks along the second direction are electrically connected through the first connecting portions; each of the second touch electrodes includes a plurality of second electrode blocks and a plurality of second connecting portions; the plurality of second electrode blocks are arranged sequentially along a first direction, and adjacent second electrode blocks along the first direction are electrically connected through the second connecting portions; There are multiple first virtual parts and second virtual parts. Each second electrode block corresponds to one first virtual part, and the orthographic projection of the second electrode block on the insulating layer coincides with the orthographic projection of the corresponding first virtual part on the insulating layer. Each first electrode block corresponds to one second virtual part, and the orthographic projection of the first electrode block on the insulating layer coincides with the orthographic projection of the corresponding second virtual part on the insulating layer.

[0008] Optionally, the first virtual part and the first touch electrode layer are made of the same material and have the same thickness. The second virtual part and the second touch electrode layer are made of the same material and have the same thickness.

[0009] Optionally, the thickness of the first touch electrode layer and the second touch electrode layer may be the same or different; Optionally, the first electrode block and the second electrode block have the same impedance; Optionally, when the thicknesses of the first touch electrode layer and the second touch electrode layer are different, the areas of the first electrode block and the second electrode block are different.

[0010] Optionally, the first electrode block and the second electrode block have the same shape; Optionally, both the first electrode block and the second electrode block are rhomboid or square in shape; Optionally, the first electrode block and the second electrode block are made of the same material; Optionally, both the first electrode block and the second electrode block are made of transparent metal oxide or metal wire.

[0011] According to another aspect of the present invention, a display module is provided, comprising: Display substrates and touch substrates as described in any embodiment of the present invention.

[0012] Optionally, the display substrate includes a substrate, a light-emitting functional layer, and an encapsulation layer stacked sequentially. The touch substrate is disposed on the side of the encapsulation layer away from the light-emitting functional layer; or, the first touch electrode layer is disposed within the encapsulation layer, and the second touch electrode layer is disposed on the side of the encapsulation layer away from the light-emitting functional layer. Optionally, the display module further includes: Polarizing film and cover plate; The polarizer is disposed on the side of the encapsulation layer away from the light-emitting functional layer, and the cover plate is disposed on the side of the polarizer away from the encapsulation layer; When the first touch electrode layer is disposed within the encapsulation layer, the second touch electrode layer is disposed between the encapsulation layer and the polarizer; or, the first touch electrode layer is disposed between the encapsulation layer and the polarizer, and the second touch electrode layer is disposed between the cover plate and the polarizer, wherein the polarizer is reused as the insulating layer; or, the touch substrate is disposed between the polarizer and the encapsulation layer; or, the touch substrate is disposed between the polarizer and the cover plate. Preferably, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked sequentially, wherein the second inorganic layer is disposed on the side of the organic layer adjacent to the polarizer; the first touch electrode layer is disposed between the organic layer and the second inorganic layer, the second touch electrode layer is disposed between the second inorganic layer and the polarizer, and the second inorganic layer is reused as the insulating layer.

[0013] According to another aspect of the present invention, a display device is provided, including the display module described in any embodiment of the present invention.

[0014] The touch substrate in the display panel of this embodiment includes a first touch electrode layer, an insulating layer, and a second touch electrode layer stacked sequentially. The first touch electrode layer includes a plurality of first touch electrodes arranged sequentially along a first direction, and the first touch electrodes extend along a second direction. The second touch electrode layer includes a plurality of second touch electrodes arranged sequentially along the second direction, and the second touch electrodes extend along the first direction. By setting the first touch electrodes and the second touch electrodes in different layers, with the first touch electrodes disposed in the first touch electrode layer and the second touch electrodes disposed in the second touch electrode layer, no bridge connection is required between the first touch electrodes and the second touch electrodes. Therefore, electrostatic concentration at the connection point between the bridge and the electrode block can be avoided, preventing touch abnormalities.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a display panel; Figure 2 yes Figure 1 A cross-sectional view of the display panel along section line AA; Figure 3 This is a schematic diagram of a touch substrate provided in an embodiment of the present invention; Figure 4 yes Figure 3 A cross-sectional view of the central touch substrate along section line BB; Figure 5 yes Figure 3 Cross-sectional view of the touch substrate along section line CC Figure 6 This is a cross-sectional view of another touch substrate provided in an embodiment of the present invention; Figure 7 This is a cross-sectional view of another touch substrate provided in an embodiment of the present invention; Figure 8 This is a cross-sectional view of another touch substrate provided in an embodiment of the present invention; Figure 9 This is a cross-sectional view of a display module provided in an embodiment of the present invention; Figure 10 This is a cross-sectional view of another display module provided in an embodiment of the present invention; Figure 11 This is a cross-sectional view of another display module provided in an embodiment of the present invention; Figure 12 This is a cross-sectional view of another display module provided in an embodiment of the present invention; Figure 13 This is a cross-sectional view of another display module provided in an embodiment of the present invention; Figure 14 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] As mentioned in the background section, existing display products are prone to touch malfunctions. Through research, the inventors discovered that the reason for this problem is that existing touch display products typically include two types of electrodes: touch driving electrodes and touch sensing electrodes. These electrodes intersect and are insulated from each other. Figure 1 This is a schematic diagram of a display panel. Figure 2 yes Figure 1 A cross-sectional view of the display panel along section line AA, for reference. Figure 1 and Figure 2 Each touch driving electrode 110 includes a plurality of electrically connected driving electrode blocks 101, and each touch sensing electrode 120 includes a plurality of electrically connected sensing electrode blocks 102. The driving electrode blocks 101 and sensing electrode blocks 102 are fabricated in the same layer. One of the electrode blocks, the driving electrode block and the sensing electrode block, needs to be connected via a bridge. For example, refer to... Figure 1 The sensing electrode block 102 and the sensing electrode block 102 need to be connected by a bridge 103, which is on a different layer from the sensing electrode block 102. However, impedance changes inevitably occur at the bridge 103. During the manufacturing process, charge accumulation and release are very likely to occur at the bridge 103, which can cause static electricity concentration at the connection between the bridge 103 and the electrode block, resulting in touch abnormalities and defective products.

[0021] Based on this, embodiments of the present invention provide a touch substrate. Figure 3This is a schematic diagram of a touch substrate provided in an embodiment of the present invention. Figure 4 yes Figure 3 A cross-sectional view of the central touch substrate along section line BB. Figure 5 yes Figure 3 Cross-sectional view of the central touch panel substrate along section line CC. (Reference) Figures 3-5 The touch substrate includes: A first touch electrode layer, an insulating layer 23, and a second touch electrode layer are stacked sequentially. The first touch electrode layer includes a plurality of first touch electrodes 21 arranged sequentially along the first direction X, and the first touch electrodes 21 extend along the second direction Y; The second touch electrode layer includes a plurality of second touch electrodes 22 arranged sequentially along the second direction Y, and the second touch electrodes 22 extend along the first direction X; wherein the first direction X and the second direction Y intersect each other.

[0022] The touch substrate is used to implement touch control. One of the first touch electrode layer and the second touch electrode layer can be a touch driving electrode layer, and the other can be a touch sensing electrode layer. One of the first touch electrode 21 and the second touch electrode 22 can be a touch driving electrode, and the other can be a touch sensing electrode. During touch detection, a touch driving signal is input to the touch driving electrode, and the sensing signal on the touch sensing electrode is detected. When an object touches the display panel, the sensing signal on the touch sensing electrode at the touch location changes, and the touch position can be determined based on the detected sensing signal. The first direction X and the second direction Y intersect each other, i.e., there is a certain angle between the first direction X and the second direction Y; for example, the first direction X and the second direction Y are perpendicular to each other. Both the first touch electrode layer and the second touch electrode layer are made of conductive material. The first touch electrode layer and the second touch electrode layer can be made of the same material or different materials. Furthermore, the touch substrate may or may not include the substrate 10. Figures 3-5 The image only shows a touch substrate including substrate 10 as an example. Substrate 10 may be a base. Alternatively, substrate 10 may be a display substrate, which is equivalent to the touch substrate being a touch display substrate. A first touch electrode layer, an insulating layer 23, and a second touch electrode layer may be located on substrate 10 and sequentially stacked in a direction away from substrate 10. The intersection of the first touch electrode 21 and the second touch electrode 22 may be isolated by the insulating layer 23.

[0023] Specifically, the first touch electrode 21 and the second touch electrode 22 are disposed on different layers. The first touch electrode 21 is disposed on the first touch electrode layer, and the second touch electrode 22 is disposed on the second touch electrode layer. Neither the first touch electrode 21 nor the second touch electrode 22 requires a bridge connection, thus avoiding electrostatic concentration at the connection points between the bridge and the electrode blocks and preventing touch malfunctions. For example, the first touch electrode 21 includes multiple first electrode blocks 211 and multiple first connecting portions 212, with adjacent first electrode blocks 211 connected through the first connecting portions 212. The second touch electrode 22 includes multiple second electrode blocks 221 and multiple second connecting portions 222, with adjacent second electrode blocks 221 connected through the second connecting portions 222. The multiple first electrode blocks 211 and multiple first connecting portions 212 in the first touch electrode 21 are all disposed on the first touch electrode layer, and the multiple second electrode blocks 221 and multiple second connecting portions 222 in the second touch electrode 22 are all disposed on the second touch electrode layer. No bridge connection is required between adjacent first electrode blocks 211 and adjacent second electrode blocks 221. Therefore, static electricity concentration at the connection point between the bridge and the electrode block can be avoided, thus preventing touch abnormalities.

[0024] In this embodiment of the invention, the touch substrate of the display panel includes a first touch electrode layer, an insulating layer 23, and a second touch electrode layer stacked sequentially. The first touch electrode layer includes a plurality of first touch electrodes 21 arranged sequentially along a first direction X, and the first touch electrodes 21 extend along a second direction Y. The second touch electrode layer includes a plurality of second touch electrodes 22 arranged sequentially along the second direction Y, and the second touch electrodes 22 extend along the first direction X. By setting the first touch electrodes 21 and the second touch electrodes 22 in different layers, with the first touch electrodes 21 disposed in the first touch electrode layer and the second touch electrodes 22 disposed in the second touch electrode layer, no bridge connection is required between the first touch electrodes 21 and the second touch electrodes 22. Therefore, electrostatic concentration at the connection point between the bridge and the electrode block can be avoided, preventing touch abnormalities.

[0025] Figure 6 This is a cross-sectional view of another display panel provided in an embodiment of the present invention. Optionally, refer to... Figure 4 and Figure 6 The insulating layer 23 has a recessed portion 231. The orthographic projection of the first touch electrode 21 on the insulating layer 23 is spaced apart from the recessed portion 231. The second touch electrode 22 extends into the recessed portion 231.

[0026] For details, please refer to Figure 4 The insulating layer 23 can be fabricated on the entire surface, that is, the insulating layer 23 covers the first touch electrode layer and the substrate 10 not covered by the first touch electrode layer. This arrangement eliminates the need for image processing such as photolithography during the fabrication of the insulating layer 23, simplifying the process.

[0027] For details, please refer to Figure 4 and Figure 6 When the insulating layer 23 is fabricated over its entire surface, the first touch electrode 21 and the second touch electrode 22 are at different heights due to the influence of the insulating layer 23. When the touch substrate is applied to the display device, the light emitted from the display substrate illuminates the touch substrate, and the paths taken by the first touch electrode 21 and the second touch electrode 22 are significantly different. This results in different light transmittance at the first touch electrode 21 and the second touch electrode 22, leading to differences in the final light emitted from the touch substrate at the first touch electrode 21 and the second touch electrode 22, which may affect the display effect of the display device. By providing a recess 231 in the insulating layer 23, and extending the second touch electrode 22 into the recess 231, the difference in the path taken by the light emitted from the display substrate at the first touch electrode 21 and the second touch electrode 22 is reduced, ensuring a better display effect for the display device. The recess 231 may not penetrate the insulating layer 23; for example, it may be a groove. The thickness of the first touch electrode 21 may be less than the thickness of the second touch electrode 22. The sum of the thickness of the first touch electrode 21 and the thickness of the insulating layer 23 can be equal to the thickness of the second touch electrode 22.

[0028] Optionally, the recess 231 penetrates the insulating layer 23. For example, the recess 231 may be a through hole penetrating the insulating layer 23.

[0029] This configuration further reduces the difference in the path of light emitted from the touch substrate at the first touch electrode 21 and the second touch electrode 22, ensuring that the display device has a better display effect.

[0030] Optionally, each first touch electrode 21 includes a plurality of first electrode blocks 211 and a plurality of first connecting portions 212. The plurality of first electrode blocks 211 are arranged sequentially along the second direction Y, and adjacent first electrode blocks 211 along the second direction Y are electrically connected through the first connecting portions 212. Each second touch electrode layer includes a plurality of second touch electrodes 22 arranged sequentially along the second direction Y. Each second touch electrode 22 includes a plurality of second electrode blocks 221 and a plurality of second connecting portions 222. The plurality of second electrode blocks 221 are arranged sequentially along the first direction X, and adjacent second electrode blocks 221 in the first direction X are electrically connected through the second connecting portions 222. At least a portion of the second electrode blocks 221 is located in the recess 231.

[0031] For details, please refer to Figure 4 and Figure 6When the insulating layer 23 is fabricated over its entire surface, the first electrode block 211 and the second electrode block 221 are at different heights due to the influence of the insulating layer 23. This results in a significant difference in the path taken by the light emitted from the display substrate at the first electrode block 211 and the second electrode block 221, leading to different light transmittance at these locations. Consequently, the light emitted from the display panel exhibits differences at the first electrode block 211 and the second electrode block 221, potentially affecting the display panel's display performance. By providing a recess 231 in the insulating layer 23 and placing at least a portion of the second electrode block 221 within the recess 231, the difference in the path taken by the light emitted from the display substrate at the first electrode block 211 and the second electrode block 221 is reduced, ensuring a better display effect for the display panel.

[0032] Optionally, when the recess 231 penetrates the insulating layer 23, the light emitted from the touch substrate does not pass through the insulating layer 23 at either the first electrode block 211 or the second electrode block 221, thus reducing the difference in the path taken by the first electrode block 211 and the second electrode block 221, and ensuring that the display panel has a better display effect.

[0033] Figure 7 This is a cross-sectional view of another display panel provided in an embodiment of the present invention. Optionally, refer to... Figure 7 The touch substrate also includes a first virtual part 31 and a second virtual part 32; The first virtual part 31 is disposed on the same layer as the first electrode block 211, and the orthographic projection of the first virtual part 31 on the insulating layer 23 overlaps at least partially with the orthographic projection of the second touch electrode layer on the insulating layer; the second virtual part 32 is disposed on the same layer as the second touch electrode layer, and the orthographic projection of the second virtual part 32 on the insulating layer 23 overlaps at least partially with the orthographic projection of the first touch electrode layer on the insulating layer 23.

[0034] Specifically, the first virtual part 31 and the second virtual part 32 are not electrically connected to other structures and do not receive electrical signals. By setting the first virtual part 31 and the second virtual part 32, the light emitted from the display substrate passes through the first touch electrode layer, the insulating layer 23, and the second virtual part 32 at the first touch electrode layer, and passes through the first virtual part 31, the insulating layer 23, and the second touch electrode layer at the second touch electrode layer. That is, the light emitted from the display substrate passes through the same film layers at the first and second touch electrode layers, which can avoid affecting the display of the display device and ensure that the display device has a better display effect. Furthermore, the first virtual part 31 can be manufactured in the same process as the first touch electrode layer, and the second virtual part 32 can be manufactured in the same process as the second touch electrode layer, without adding any process steps.

[0035] Optionally, there are multiple first virtual parts 31 and second virtual parts 32, each second electrode block 221 corresponds to a first virtual part 31, and the orthographic projection of the second electrode block 221 on the insulating layer 23 coincides with the orthographic projection of the corresponding first virtual part 31 on the insulating layer. Each first electrode block 211 corresponds to a second virtual part 32, and the orthographic projection of the first electrode block 211 onto the insulating layer 23 coincides with the orthographic projection of the corresponding second virtual part 32 onto the insulating layer 23.

[0036] Specifically, by setting the first virtual part 31 and the second virtual part 32, the light emitted from the display substrate passes through the first electrode block 211, the insulating layer 23, and the second virtual part 32 at the first electrode block 211, and through the first virtual part 31, the insulating layer 23, and the second electrode block 221 at the second electrode block 221. That is, the light emitted from the display substrate passes through the same film layers at the first electrode block 211 and the second electrode block 221, which avoids affecting the display panel and ensures a better display effect. Furthermore, the first virtual part 31 can be manufactured in the same process as the first electrode block 211, and the second virtual part 32 can be manufactured in the same process as the second electrode block 221, without requiring additional process steps.

[0037] Optionally, the first virtual part 31 and the first touch electrode layer are made of the same material and have the same thickness. The second virtual part 32 and the second touch electrode layer are made of the same material and have the same thickness.

[0038] Specifically, the first virtual part 31 is made of the same material as the first touch electrode layer, and the thickness of the first virtual part 31 is the same as that of the first touch electrode layer, so that the first virtual part 31 can be manufactured in the same process as the first touch electrode layer. The second virtual part 32 is made of the same material as the second touch electrode layer, and the thickness of the second virtual part 32 is the same as that of the second touch electrode layer, so that the second virtual part 32 can be manufactured in the same process as the second touch electrode layer without adding process steps. This ensures that the display panel has good touch and display effects without increasing process costs.

[0039] Optionally, the first touch electrode layer and the second touch electrode layer may have the same or different thicknesses.

[0040] Specifically, when the thickness of the first touch electrode layer and the second touch electrode layer are the same, the materials used for the first touch electrode layer and the second touch electrode layer can be the same, so that the first touch electrode layer and the second touch electrode layer can be prepared using the same process, thereby reducing the process cost.

[0041] Furthermore, in existing display panels that connect electrode blocks via bridges, the bridges and electrode blocks have different thicknesses. In this embodiment, by setting the first touch electrode layer and the second touch electrode layer to have different thicknesses, the display panel can be manufactured using the existing manufacturing process for display panels that connect electrode blocks via bridges, without the need to design new processes, thus reducing process costs.

[0042] Optionally, the first electrode block 211 and the second electrode block 221 have the same impedance, so that during touch detection, the first electrode block 211 and the second electrode block 221 have the same transmission loss of the touch signal. The first electrode block 211 and the second electrode block 221 can be set to have a small impedance to reduce the transmission loss of the touch signal and improve the touch detection accuracy.

[0043] Figure 8 This is a cross-sectional view of another display panel provided in an embodiment of the present invention. (See reference) Figure 8 Optionally, when the thicknesses of the first touch electrode layer and the second touch electrode layer are different, the areas of the first electrode block 211 and the second electrode block 221 are different.

[0044] Specifically, the impedance of the first electrode block 211 can be adjusted by adjusting the area of ​​the first electrode block 211, and the impedance of the second electrode block 221 can be adjusted by adjusting the area of ​​the second electrode block 221. When the thickness D1 of the first touch electrode layer and the thickness D2 of the second touch electrode layer are different, the areas of the first electrode block 211 and the second electrode block 221 are set to be different so that the first electrode block 211 and the second electrode block 221 can have the same or similar impedance.

[0045] In the first electrode block 211 and the second electrode block 221, the electrode block with greater thickness can have a smaller area, and the electrode block with less thickness can have a larger area. For example, refer to... Figure 8 If the thickness D1 of the first electrode block is less than the thickness D2 of the second electrode block, then the area of ​​the second electrode block 221 can be set to be smaller than the area of ​​the first electrode block 211. Alternatively, a thicker electrode block can be placed within the recess 231.

[0046] Optionally, the thickness of the first touch electrode layer is 1500-2500 Å; the thickness of the second touch electrode layer is 3500-4500 Å. When using the above thickness range, the first touch electrode layer and the second touch electrode layer are easier to manufacture, and by adjusting the area, it is easier to make the first electrode block 211 and the second electrode block 221 have the same or similar impedance.

[0047] Optionally, the first electrode block and the second electrode block have the same shape.

[0048] This setup allows both to use the same photomask during production, reducing manufacturing costs.

[0049] Optionally, both the first electrode block and the second electrode block can be rhomboid or square in shape.

[0050] Specifically, the manufacturing process of rhombus and square shapes is relatively simple. When using rhombus and square shapes, the adjacent edges of the first electrode block and the second electrode block can be parallel to each other, which allows the distance between the first electrode block and the second electrode block to be smaller, thus improving the touch detection accuracy.

[0051] Optionally, the first electrode block and the second electrode block are made of the same material, so that the first electrode block and the second electrode block can be manufactured using the same process, reducing process costs.

[0052] Optionally, both the first electrode block and the second electrode block may be made of transparent metal oxide or metal wire.

[0053] Specifically, the transparent metal oxide can be indium tin oxide (ITO), etc. Since the transparent metal oxide has high light transmittance, when the first electrode block and the second electrode block are made of transparent metal oxide, the first electrode block and the second electrode block can have a large area, for example, they can cover part of the sub-pixel, which can improve the touch detection accuracy.

[0054] Metal wires (i.e., electrode blocks can be metal meshes) are less expensive, and using metal wires for the first and second electrode blocks can reduce the cost of the display panel. However, when metal wires are used for the first and second electrode blocks, because metal wires have low light transmittance, the orthographic projection of the metal wires onto the display substrate needs to be located in the area between adjacent sub-pixels to avoid the metal wires affecting the light emitted by the sub-pixels.

[0055] This invention also provides a display module, including a display substrate and a touch substrate as described in any embodiment of this invention.

[0056] Specifically, the touch substrate can be located on the light-emitting side of the display substrate.

[0057] Figure 9 This is a cross-sectional view of a display module provided in an embodiment of the present invention. Figure 10 This is a cross-sectional view of another display module provided in an embodiment of the present invention. Optionally, refer to... Figure 10 and Figure 9 The display substrate 01 includes a substrate 11, a light-emitting functional layer 12 and an encapsulation layer 13 stacked sequentially. The touch substrate 20 is disposed on the side of the encapsulation layer 13 away from the light-emitting functional layer 12. Figure 9 Alternatively, the first touch electrode layer 210 is disposed within the encapsulation layer 13, and the second touch electrode layer 220 is disposed on the side of the encapsulation layer 13 away from the light-emitting functional layer 12. Figure 10It should be noted that when the touch substrate 20 is disposed on the surface of the encapsulation layer 13, the touch substrate 20 may not be disposed of as described above.

[0058] Specifically, the encapsulation layer 13 is used to encapsulate the light-emitting functional layer 12 to prevent external water, oxygen, and other substances from corroding the light-emitting functional layer 12. The touch substrate 20 is disposed on the side of the encapsulation layer 13 away from the light-emitting functional layer 12, which can prevent water vapor or oxygen from invading the light-emitting functional layer 12 during the manufacturing process of the touch substrate 20 and affecting the performance of the light-emitting functional layer 12.

[0059] In addition, refer to Figure 10 The encapsulation layer 13 includes stacked inorganic and organic layers, with the inorganic layer used to block water and oxygen. When the first touch electrode layer 210 is disposed within the encapsulation layer 13, at least one inorganic layer may be included between the first touch electrode layer 210 and the light-emitting functional layer 12 to ensure that water vapor and oxygen do not enter the light-emitting functional layer 12 during the manufacturing process of the first touch electrode layer 210. When the first touch electrode layer 210 is disposed within the encapsulation layer 13 and the second touch electrode layer 220 is disposed on the side of the encapsulation layer 13 away from the light-emitting functional layer 12, the encapsulation layer 13 and other film layers between the first touch electrode layer 210 and the second touch electrode layer 220 can be reused as an insulating layer 23. This arrangement eliminates the need for a separate insulating layer 23, reducing costs and the thickness of the display panel.

[0060] Figure 11 This is a cross-sectional view of another display module provided in an embodiment of the present invention. Figure 12 This is a cross-sectional view of another display module provided in an embodiment of the present invention. Figure 13 This is a cross-sectional view of another display module provided in an embodiment of the present invention. Optionally, refer to... Figures 11-13 The display module also includes: Polarizing film 40 and cover plate 50; The polarizer 40 is disposed on the side of the encapsulation layer 13 away from the light-emitting functional layer 12, and the cover plate is disposed on the side of the polarizer 40 away from the encapsulation layer 13. refer to Figure 10 When the first touch electrode layer 210 is disposed within the encapsulation layer 13, the second touch electrode layer 220 is disposed between the encapsulation layer 13 and the polarizer 40; or, refer to Figure 11 The first touch electrode layer 210 is disposed between the encapsulation layer 13 and the polarizer 40, and the second touch electrode layer 220 is disposed between the cover plate 50 and the polarizer 40. The polarizer 40 is reused as the insulating layer 23; or, refer to Figure 12 The touch substrate 20 is disposed between the polarizer 40 and the encapsulation layer 23; or, refer to Figure 13 The touch substrate 20 is disposed between the polarizer 40 and the cover plate 50; For details, please refer to Figure 10 When the first touch electrode layer 210 is disposed within the encapsulation layer 13, the second touch electrode layer 220 is disposed between the encapsulation layer 13 and the polarizer 40. The encapsulation layer 13 between the first touch electrode layer 210 and the second touch electrode layer 220 can be reused as an insulating layer 23. With this configuration, there is no need to separately set the insulating layer 23, which can reduce costs and reduce the thickness of the display panel.

[0061] refer to Figure 11 The first touch electrode layer 210 is disposed between the encapsulation layer 13 and the polarizer 40, and the second touch electrode layer 22 is disposed between the cover plate 50 and the polarizer 40. When the polarizer 40 is reused as the insulating layer 23, there is no need to separately set the insulating layer 23, which can reduce costs and reduce the thickness of the display panel.

[0062] refer to Figure 12 and Figure 13 When the touch substrate 20 is disposed between the polarizer 40 and the encapsulation layer 23 or between the polarizer 40 and the cover plate 50, the touch substrate 20 can be directly fabricated on the surface of the encapsulation layer 23 or the polarizer 40, or the touch substrate 20 can be fabricated first and then aligned and mounted onto the display panel.

[0063] Optional, see reference Figure 10 The encapsulation layer 13 includes a first inorganic layer 131, an organic layer 132, and a second inorganic layer 133 stacked sequentially. The second inorganic layer 133 is disposed on the side of the organic layer 132 adjacent to the polarizer 40. A first touch electrode layer 210 is disposed between the organic layer 132 and the second inorganic layer 133. A second touch electrode layer 220 is disposed between the second inorganic layer 133 and the polarizer 40. The second inorganic layer 133 is reused as an insulating layer 23.

[0064] This invention provides a display device. Figure 14 This is a schematic diagram of a display device provided in an embodiment of the present invention, with reference to... Figure 14 The display device 100 includes the display panel 200 described in any embodiment of the present invention. The display device can be a touch display product such as a mobile phone, tablet, or watch.

[0065] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A touch substrate, characterized in that, include: A first touch electrode layer, an insulating layer, and a second touch electrode layer are stacked sequentially. The first touch electrode layer includes a plurality of first touch electrodes arranged sequentially along a first direction, and the first touch electrodes extend along a second direction; The second touch electrode layer includes a plurality of second touch electrodes arranged sequentially along a second direction, the second touch electrodes extending along a first direction; wherein the first direction and the second direction intersect each other; The touch substrate includes a first virtual portion and a second virtual portion. The first virtual portion is disposed on the same layer as the first touch electrode layer, and the orthographic projection of the first virtual portion on the insulating layer at least partially overlaps with the orthographic projection of the second touch electrode layer on the insulating layer. The second virtual portion is disposed on the same layer as the second touch electrode layer, and the orthographic projection of the second virtual portion on the insulating layer at least partially overlaps with the orthographic projection of the first touch electrode layer on the insulating layer. Alternatively, the insulating layer has a recessed portion, the orthographic projection of the first touch electrode on the insulating layer is spaced apart from the recessed portion, the second touch electrode extends into the recessed portion, each first touch electrode includes a plurality of first electrode blocks and a plurality of first connecting portions, the plurality of first electrode blocks are arranged sequentially along a second direction, and adjacent first electrode blocks along the second direction are electrically connected through the first connecting portions; each second touch electrode includes a plurality of second electrode blocks and a plurality of second connecting portions, the plurality of second electrode blocks are arranged sequentially along a first direction, and adjacent second electrode blocks along the first direction are electrically connected through the second connecting portions; at least a portion of the second electrode blocks is located within the recessed portion.

2. The touch substrate according to claim 1, characterized in that: The recessed portion penetrates the insulating layer.

3. The touch substrate according to claim 1, characterized in that: When the touch substrate includes a first virtual part and a second virtual part, each first touch electrode includes a plurality of first electrode blocks and a plurality of first connecting parts. The plurality of first electrode blocks are arranged sequentially along a second direction, and adjacent first electrode blocks along the second direction are electrically connected through the first connecting parts. Each second touch electrode includes a plurality of second electrode blocks and a plurality of second connecting parts. The plurality of second electrode blocks are arranged sequentially along a first direction, and adjacent second electrode blocks along the first direction are electrically connected through the second connecting parts. There are multiple first virtual parts and second virtual parts, each second electrode block corresponds to one first virtual part, and the orthographic projection of the second electrode block on the insulating layer coincides with the orthographic projection of the corresponding first virtual part on the insulating layer; Each of the first electrode blocks corresponds to a second virtual part, and the orthographic projection of the first electrode block on the insulating layer coincides with the orthographic projection of the corresponding second virtual part on the insulating layer.

4. The touch substrate according to claim 1, characterized in that: The first virtual part and the first touch electrode layer are made of the same material and have the same thickness. The second virtual part and the second touch electrode layer are made of the same material and have the same thickness.

5. The touch substrate according to claim 1 or 3, characterized in that: The first touch electrode layer and the second touch electrode layer may have the same or different thicknesses.

6. The touch substrate according to claim 1 or 3, characterized in that: The first electrode block and the second electrode block have the same impedance.

7. The touch substrate according to claim 5, characterized in that: When the thicknesses of the first touch electrode layer and the second touch electrode layer are different, the areas of the first electrode block and the second electrode block are different.

8. The touch substrate according to claim 1 or 3, characterized in that: The first electrode block has the same shape as the second electrode block.

9. The touch substrate according to claim 8, characterized in that: Both the first electrode block and the second electrode block are rhomboid or square in shape.

10. The touch substrate according to claim 1 or 3, characterized in that: The first electrode block and the second electrode block are made of the same material.

11. The touch substrate according to claim 10, characterized in that: Both the first electrode block and the second electrode block are made of transparent metal oxide or metal wire.

12. A display module, characterized in that, include: The display substrate and the touch substrate according to any one of claims 1-11.

13. The display module according to claim 12, characterized in that: The display substrate includes a substrate, a light-emitting functional layer, and an encapsulation layer stacked sequentially. The touch substrate is disposed on the side of the encapsulation layer away from the light-emitting functional layer; or, the first touch electrode layer is disposed within the encapsulation layer, and the second touch electrode layer is disposed on the side of the encapsulation layer away from the light-emitting functional layer.

14. The display module according to claim 13, characterized in that: The display module also includes: Polarizing film and cover plate; The polarizer is disposed on the side of the encapsulation layer away from the light-emitting functional layer, and the cover plate is disposed on the side of the polarizer away from the encapsulation layer; When the first touch electrode layer is disposed within the encapsulation layer, the second touch electrode layer is disposed between the encapsulation layer and the polarizer; or, the first touch electrode layer is disposed between the encapsulation layer and the polarizer, and the second touch electrode layer is disposed between the cover plate and the polarizer, wherein the polarizer is reused as the insulating layer; or, the touch substrate is disposed between the polarizer and the encapsulation layer; or, the touch substrate is disposed between the polarizer and the cover plate.

15. The display module according to claim 14, characterized in that: The encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked sequentially, wherein the second inorganic layer is disposed on the side of the organic layer adjacent to the polarizer; the first touch electrode layer is disposed between the organic layer and the second inorganic layer, the second touch electrode layer is disposed between the second inorganic layer and the polarizer, and the second inorganic layer is reused as the insulating layer.

16. A display device, characterized in that, Includes the display module as described in any one of claims 12-15.

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