Touch substrate and touch display panel

Abstract

The utility model provides a touch substrate and a touch display panel. The touch substrate comprises a substrate; the at least one touch pattern layer is arranged on one side of the substrate and is of a metal grid structure; the blackening layer is located between the touch pattern layer and the substrate, and the orthographic projection of the blackening layer on the substrate is located in the orthographic projection range of the touch pattern layer on the substrate; the thickness of the blackening layer is smaller than that of the touch pattern layer. The touch control substrate has the advantages of being low in resistance, good in shadow eliminating performance, high in touch control fluency and capable of achieving integrated black.

Description

Technical Field

[0001] The utility model relates to the technical field of touch display, in particular to a touch substrate and a touch display panel. Background Art

[0002] With the rapid development of technology, people are increasingly in need of multimedia interconnected displays and platforms for information interaction. Touch screens are technological carriers of human-computer interaction and communication. The higher the touch fluency, the more comfortable and pleasant the experience will be for users. Touch fluency is even more important in car displays.

[0003] However, touch screens not only require larger lateral dimensions, but also require thinner and lighter touch screens, which results in large resistance values ​​and poor touch smoothness. The use of metal grids in touch screens leads to high reflectivity, causing users to see obvious metal grids. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art, and proposes a touch substrate and a touch display panel.

[0005] According to one aspect of the utility model, there is provided a touch control substrate comprising:

[0006] substrate;

[0007] At least one touch graphic layer, wherein the touch graphic layer is disposed on one side of the substrate and has a metal grid structure;

[0008] a blackening layer, wherein the blackening layer is located between the touch pattern layer and the substrate, and an orthographic projection of the blackening layer on the substrate is located within a range of an orthographic projection of the touch pattern layer on the substrate;

[0009] The thickness of the blackened layer is smaller than the thickness of the touch pattern layer.

[0010] In some optional embodiments, the touch graphic layer is multi-layered, the blackened layer is multi-layered, and a surface of each of the touch graphic layers facing the substrate is connected to a layer of the blackened layer.

[0011] In some optional embodiments, the touch control substrate further includes a first insulating layer, and the first insulating layer is located between two adjacent touch control graphic layers.

[0012] In some optional embodiments, each touch graphic layer corresponds to a blackened layer, and an orthographic projection of the blackened layer on the substrate completely overlaps with an orthographic projection of the corresponding touch graphic layer on the substrate.

[0013] In some optional embodiments, the substrate has a touch area, the orthographic projection of the touch graphic layer on the substrate overlaps with the touch area, the touch area is rectangular, and the diagonal length of the touch area is greater than 14 inches.

[0014] In some optional embodiments, the touch substrate further includes a second insulating layer, the touch graphic layer is a plurality of layers, one of the plurality of touch graphic layers closest to the substrate is the first touch graphic layer, and the second insulating layer is located between the first touch graphic layer and the substrate.

[0015] In some optional embodiments, the substrate has a touch area, the orthographic projection of the touch graphic layer on the substrate overlaps with the touch area, the touch substrate also includes a light shielding layer, the touch graphic layer is a plurality of layers, the first touch graphic layer is the closest to the substrate among the plurality of touch graphic layers, the light shielding layer is located between the first touch graphic layer and the substrate, and the light shielding layer has an opening that avoids the touch area.

[0016] In some optional embodiments, the substrate has a touch area and a binding area, the touch area and the binding area are spaced apart, the touch substrate also includes a third insulating layer and a plurality of binding pads, the plurality of binding pads are located in the binding area, the third insulating layer is arranged on a side of the plurality of binding pads away from the substrate, the third insulating layer has a plurality of spaced apart binding holes, and the orthographic projection of the binding holes on the substrate falls within the orthographic projection range of the binding pads on the substrate.

[0017] In some optional embodiments, an edge of an orthographic projection of the binding hole on the substrate is spaced apart from an edge of an orthographic projection of the binding pad on the substrate.

[0018] In some optional embodiments, the touch graphic layer consists of two layers, the two touch graphic layers are respectively a first touch graphic layer and a second touch graphic layer in a direction away from the substrate, and a portion of the third insulating layer is located on a side of the second touch graphic layer away from the substrate.

[0019] In some optional embodiments, the bonding pad includes:

[0020] A first pad layer, wherein the first pad layer is in the same layer as the first touch pattern layer;

[0021] A second pad layer, electrically connected to the first pad layer, and the second pad layer is in the same layer as the second touch pattern layer;

[0022] The orthographic projection of the binding hole on the substrate falls within the orthographic projection range of the second pad layer on the substrate.

[0023] In some optional embodiments, the touch control substrate further includes a waterproof layer, and the waterproof layer is located between the second touch control graphic layer and the third insulating layer.

[0024] According to another aspect of the present invention, a touch display panel is provided, comprising:

[0025] The above-mentioned touch substrate;

[0026] The touch control substrate is located at the light emitting side of the display panel, and the substrate of the touch control substrate is away from the display panel relative to the touch control graphic layer of the touch control substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0028] Figure 1 An exploded view of a touch control substrate according to an optional embodiment of the present utility model is shown;

[0029] Figure 2 A side view of a touch control substrate according to an optional embodiment of the present utility model is shown;

[0030] Figure 3 An in-plane design diagram of a touch control substrate of an optional embodiment of the utility model is shown;

[0031] Figure 4 A schematic structural diagram of a third insulating layer of a touch control substrate in another optional embodiment of the utility model is shown;

[0032] Figure 5 A schematic diagram showing the positional relationship between the third insulating layer and the binding pad of a touch control substrate in another optional embodiment of the utility model is shown;

[0033] Figure 6 A side view of a touch control substrate according to another optional embodiment of the present invention is shown;

[0034] Figure 7 A side view of an example touch substrate is shown;

[0035] Figure 8 Shows Figure 7 A schematic diagram of the structure of the third insulating layer;

[0036] Fig. 9 Shows Figure 7 Schematic diagram of the positional relationship between the middle insulating layer and the bonding pad;

[0037] Fig.10 Shows Figure 7 In-plane design diagram of the touch panel substrate.

[0038] 10. Substrate; 20. First insulating layer; 30. Second insulating layer; 40. Shading layer; 50. Third insulating layer; 51. Binding hole; 60. Binding pad; 61. First pad layer; 62. Second pad layer; 70. Touch graphic layer; 71. First touch graphic layer; 72. Second touch graphic layer; 80. Blackening layer; 81. First blackening layer; 82. Second blackening layer; 90. Waterproof layer. DETAILED DESCRIPTION

[0039] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] As used herein, "parallel" and "perpendicular" include the described situation and the situation similar to the described situation, and the range of the similar situation is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°.

[0043] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0044] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include deviations in shape due to, for example, manufacturing. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0045] Figure 1 FIG. 1 shows an exploded view of a touch substrate in an optional embodiment of the present invention. Figure 1 As can be seen from the figure, the touch substrate includes a substrate 10 and at least one touch graphic layer 70. The touch graphic layer 70 is disposed on one side of the substrate 10 and is a metal grid structure.

[0046] Setting the touch graphic layer 70 as a metal grid structure can reduce resistance, thereby improving the touch smoothness of the touch substrate, improving the user experience, and facilitating the development of the touch substrate toward larger sizes.

[0047] The substrate 10 may be a blank substrate or a carrier layer. For example, the substrate may be a rigid substrate, which may be, for example, a glass substrate or a PMMA (Polymethyl methacrylate) substrate. For another example, the substrate may be a flexible substrate, which may be, for example, a PET (Polyethylene terephthalate) substrate, a PEN (Polyethylenenaphthalate two formic acid glycol ester) substrate or a PI (Polyimide) substrate. For example, for some touch display panels with a protective cover, the protective cover may be directly used as the substrate 10 of the touch substrate.

[0048] In this embodiment, the touch substrate further includes a black layer 80, which is located between the touch graphic layer 70 and the substrate 10, and the orthographic projection of the black layer 80 on the substrate 10 is located within the orthographic projection range of the touch graphic layer 70 on the substrate 10. Since the touch graphic layer 70 is a metal grid structure, and the metal material has a high reflectivity, when the user uses the touch substrate, the reflectivity of the metal grid structure is higher than the reflectivity of other positions, causing the user to see an obvious metal grid, which affects the user's experience. By providing the black layer 80 between the touch graphic layer 70 and the substrate 10, the reflectivity of the touch graphic layer 70 can be reduced, the shadow elimination performance can be improved, and the user's experience can be improved.

[0049] It should be noted that the touch direction is the side of the substrate 10 away from the touch graphic layer 70 , and the user also uses the touch display panel on the side of the substrate 10 away from the touch graphic layer 70 .

[0050] In addition, by providing the black layer 80, the user cannot see the metal grid in the front view direction. In other words, the metal grid is invisible to the naked eye of the user, which reduces the difference in the display of the touch display panel and improves the user experience.

[0051] In this embodiment, the thickness of the black layer 80 is less than the thickness of the touch pattern layer 70. By setting the thickness of the black layer 80 to be less than the thickness of the touch pattern layer 70, it is beneficial to reduce the thickness of the touch substrate and improve the thinness of the touch substrate, so that the touch substrate has the advantages of low reflectivity, low resistance, good touch performance, and thinness.

[0052] In some optional embodiments, the touch graphic layer 70 is multi-layered, the blackened layer 80 is multi-layered, and the surface of each touch graphic layer 70 facing the substrate 10 is connected to a blackened layer 80. The multi-layer blackened layer 80 is arranged one by one corresponding to the multi-layer touch graphic layer 70 to reduce the reflectivity of each touch graphic layer 70, improve the shadow elimination performance of the touch substrate, and improve the display effect of the touch display panel.

[0053] In some alternative embodiments, see Figure 1 , Figure 2 and Figure 6 The touch substrate further includes a first insulating layer 20, which is located between two adjacent touch graphic layers 70. By providing the first insulating layer 20 between two adjacent touch graphic layers 70, a short circuit between the two touch graphic layers 70 can be avoided, which is conducive to the stable operation of the touch graphic layers 70.

[0054] The touch graphic layer 70 and the blackened layer 80 connected to the touch graphic layer 70 serve as a conductive layer, and at least one first insulating layer 20 is disposed between two adjacent conductive layers. Specifically, the first insulating layer 20 is located between the blackened layer 80 of one conductive layer and the touch graphic layer 70 of another conductive layer.

[0055] Optionally, the material of the blackening layer 80 is a conductive material, and the material of the touch pattern layer 70 is also a conductive material, but the blackening layer 80 and the touch pattern layer 70 are formed of different materials, and the blackening layer 80 and the touch pattern layer 70 in the same conductive layer can be formed by a single patterning process.

[0056] In some optional embodiments, each touch graphic layer 70 corresponds to a black layer 80, and the orthographic projection of the black layer 80 on the substrate 10 completely overlaps with the orthographic projection of the corresponding touch graphic layer 70 on the substrate 10. This arrangement can, on the one hand, completely block the touch graphic layer 70 and reduce the reflectivity of the touch graphic layer 70, and on the other hand, ensure that the black layer 80 does not block the pixel area, thereby ensuring the display effect of the touch display panel.

[0057] It should be noted that when the blackened layer 80 and the touch graphic layer 70 are both multi-layered, each touch graphic layer 70 is connected to one blackened layer 80, the touch graphic layer 70 and the blackened layer 80 connected to the touch graphic layer 70 act as a conductive layer, and the orthographic projection of the blackened layer 80 in the same conductive layer on the substrate 10 completely overlaps with the orthographic projection of the touch graphic layer 70 in the same conductive layer on the substrate 10.

[0058] In some optional embodiments, the substrate 10 has a touch area, the orthographic projection of the touch graphic layer 70 on the substrate 10 overlaps with the touch area, the touch area is rectangular, and the diagonal length of the touch area is greater than 14 inches. This configuration makes the touch substrate larger in size, and the use of the touch graphic layer 70 with a metal grid structure on the large-sized touch substrate effectively reduces the resistance of the touch substrate, which is conducive to improving the touch smoothness of the large-sized touch substrate. For example, the diagonal length of the touch area is greater than or equal to 15.6 inches and less than or equal to 45 inches.

[0059] In some alternative embodiments, see Figure 1 The touch substrate further includes a second insulating layer 30. The touch graphic layer 70 is multi-layered. The first touch graphic layer 71 is closest to the substrate 10 among the multi-layer touch graphic layer 70. The second insulating layer 30 is located between the first touch graphic layer 71 and the substrate 10. By providing the second insulating layer 30 between the first touch graphic layer 71 and the substrate 10, short circuit between the first touch graphic layer 71 and other structures can be avoided, thereby improving the working stability of the first touch graphic layer 71.

[0060] In some optional embodiments, the substrate has a touch area, the orthographic projection of the touch graphic layer 70 on the substrate 10 overlaps with the touch area, the touch substrate further includes a light shielding layer 40, the touch graphic layer 70 is multi-layered, the first touch graphic layer 71 is closest to the substrate among the multi-layer touch graphic layer 70, the light shielding layer 40 is located between the first touch graphic layer 71 and the substrate 10, and the light shielding layer 40 has an opening to avoid the touch area. The provision of the light shielding layer 40 can prevent light from being emitted from areas outside the touch area to avoid affecting the display effect, and the provision of the light shielding layer 40 can also increase the light absorption rate of the touch substrate, so that the touch substrate presents an integral black effect.

[0061] In some optional embodiments, the orthographic projection of the opening on the substrate 10 completely overlaps with the touch area. The touch area is located within the contour of the orthographic projection of the touch graphic layer 70 on the substrate 10 to ensure that the touch graphic layer 70 covers the touch area.

[0062] In some optional embodiments, the reflectivity of the black layer 80 is slightly greater than the reflectivity of the light shielding layer 40. The reflectivity of the touch substrate disclosed in the present invention is significantly lower than the reflectivity without the black layer 80.

[0063] In some optional embodiments, the substrate 10 has a touch area and a binding area, the touch area and the binding area are spaced apart, the touch substrate further includes a third insulating layer 50 and a plurality of binding pads 60, the plurality of binding pads 60 are located in the binding area, the third insulating layer 50 is provided with a plurality of binding pads 60 on a side away from the substrate 10, and the third insulating layer 50 has a plurality of binding holes 51 spaced apart, see Figure 4, the orthographic projection of the binding hole 51 on the substrate 10 falls within the orthographic projection range of the binding pad 60 on the substrate 10. The third insulating layer 50 can protect the binding pad 60 in the binding area, avoid short circuits between other structures and the binding pad 60, improve the working stability of the binding pad 60, and improve the corrosion resistance of the touch substrate, thereby improving the reliability of the touch substrate.

[0064] It should be noted that in Figure 4 In the figure, region D is a region in the third insulating layer 50 corresponding to the binding region, rather than the binding hole 51 .

[0065] In some optional embodiments, the edge of the orthographic projection of the binding hole 51 on the substrate 10 is spaced from the edge of the orthographic projection of the binding pad 60 on the substrate 10. That is, the size of the binding hole 51 is smaller than the size of the binding pad 60, so that only the binding pad 60 is exposed in the binding hole 51, and no other structure is exposed in the binding hole 51, so as to prevent contaminants from entering the interior of the touch substrate from the binding hole 51, thereby improving the corrosion resistance of the touch substrate.

[0066] In some alternative embodiments, see Figure 5 , the edge of the bonding pad 60 is covered by the third insulating layer 50, and the center of the bonding pad 60 is exposed in the bonding hole 51. The edge of the bonding pad 60 is covered by the third insulating layer 50, or the third insulating layer 50 is in direct contact with the edge of the surface of the bonding pad 60 facing away from the substrate 10, so as to prevent other objects from corroding the bonding pad 60, thereby improving the corrosion resistance of the touch substrate.

[0067] In some alternative embodiments, see Figure 1 , Figure 2 and Figure 6 The touch graphic layer 70 has two layers, and the two touch graphic layers 70 are respectively the first touch graphic layer 71 and the second touch graphic layer 72 in the direction away from the substrate 10, and a part of the third insulating layer 50 is located on the side of the second touch graphic layer 72 away from the substrate 10. The sensing method between the two touch graphic layers 70 is mutual capacitance sensing, one touch graphic layer 70 is used to send signals, and the other touch graphic layer 70 is used to receive signals, thereby changing the capacitance between the two touch graphic layers 70 to achieve conduction, so as to achieve touch. A part of the third insulating layer 50 is located on the side of the second touch graphic layer 72 away from the substrate 10, and the other part of the third insulating layer 50 is located on the side of the binding pad 60 away from the substrate 10.

[0068] exist Figure 1 , Figure 2 and Figure 6In the specific embodiment shown, the blackening layer 80 also consists of two layers. The two blackening layers 80 are respectively a first blackening layer 81 and a second blackening layer 82 in the direction away from the substrate 10. The first blackening layer 81 is connected to the surface of the first touch graphic layer 71 facing the substrate 10, and the second blackening layer 82 is connected to the surface of the second touch graphic layer 72 facing the substrate 10.

[0069] Figure 7 FIG. 1 shows a side view of a touch substrate in an example. The touch substrate includes two touch graphic layers 70 ′. Figure 7 In the example shown, the touch substrate includes a light shielding layer 40', a second insulating layer 30', a first touch graphic layer 71', a first insulating layer 20', a second touch graphic layer 72' and a third insulating layer 50' stacked in sequence in a direction away from the substrate. Although the touch substrate in this example can reduce resistance, there is no blackening layer 80 on the surface of the first touch graphic layer 71' and the second touch graphic layer 72' facing the substrate, which has a high reflectivity and is not conducive to application on large-size display screens. The utility model not only reduces resistance by adopting a metal grid structure, but also reduces the reflectivity of the touch substrate.

[0070] Figure 8 FIG. 4 shows a schematic structural diagram of a third insulating layer 50 ′ of a touch control substrate in an example. Fig. 9 Shows Figure 8 Schematic diagram of the positional relationship between the third insulating layer 50' and the bonding pad 60', and from Figure 8 and Fig. 9 It can be seen that the third insulating layer 50' has a binding hole 51' at a position corresponding to the binding area, and the binding hole 51' has a plurality of binding pads 60', and each binding pad 60' is spaced apart from the third insulating layer 50', which easily causes water vapor to enter the touch graphic layer from the binding area, resulting in poor reliability of the touch substrate. The utility model uses the third insulating layer 50 to cover the edge of the binding pad 60, and the center of the binding pad 60 is exposed in the binding hole 51, so as to reduce the entry of water vapor from the binding area into the touch graphic layer, thereby improving the reliability of the touch substrate.

[0071] exist Fig. 9 In the embodiment, the bonding pad 60' includes a first pad layer 61' and a second pad layer 62', and the first pad layer 61' and the second pad layer 62' are both spaced apart from the third insulating layer 50'.

[0072] Fig.10 Shows Figure 7 In-plane design diagram of the touch substrate, from Fig.10 As can be seen in the figure, the grid lines are clearly visible in the touch substrate in the example, and the touch electrodes are clearly visible. Figure 3FIG. 1 is an in-plane design diagram of a touch control substrate in an optional embodiment of the present invention. Figure 3 and Fig.10 It can be seen from the comparison that the touch substrate in the present invention has an obvious shadow elimination effect and a better visual effect.

[0073] In some optional embodiments, the orthographic projection of the touch graphic layer 70 on the substrate 10 covers and exceeds the touch area, so that all positions in the touch area can be touched. At the same time, the orthographic projection of the touch graphic layer 70 on the substrate 10 is spaced from the binding area, or in other words, the orthographic projection of the touch graphic layer 70 on the substrate 10 does not overlap with the binding area.

[0074] In some optional embodiments, the orthographic projection of the second insulating layer 30 on the substrate 10 covers and exceeds the touch area, and the orthographic projection of the second insulating layer 30 on the substrate 10 is spaced from the binding area, or in other words, the orthographic projection of the second insulating layer 30 on the substrate 10 does not overlap with the binding area. This arrangement allows the second insulating layer 30 to not only avoid short circuits between the first touch graphic layer 71 on the side facing the substrate 10 and other structures, but also avoid the binding area to reduce the number of holes opened in the second insulating layer 30.

[0075] In some optional embodiments, the orthographic projection of the touch graphic layer 70 on the substrate 10 is located within the contour line of the orthographic projection of the first insulating layer 20 on the substrate 10, and the orthographic projection of the first insulating layer 20 on the substrate is spaced apart from the binding area, or in other words, the orthographic projection of the first insulating layer 20 on the substrate 10 does not overlap with the binding area, so as to reduce the number of holes opened in the first insulating layer 20.

[0076] In some optional embodiments, the orthographic projection of the third insulating layer 50 on the substrate covers both the touch area and the binding area, so that the third insulating layer 50 contacts the side wall of the touch graphic layer 70 and protects the touch graphic layer 70 to prevent water vapor from penetrating from the side wall of the touch graphic layer 70, thereby improving the corrosion resistance of the touch graphic layer.

[0077] The corrosion resistance of the touch control substrate of the present invention is greater than or equal to 1000 hr.

[0078] In some alternative embodiments, see Figure 5, the binding pad 60 includes a first pad layer 61 and a second pad layer 62, the first pad layer 61 is in the same layer as the first touch pattern layer 71; the second pad layer 62 is located on the side of the first pad layer 61 away from the substrate 10 and is electrically connected to the first pad layer 61, and the second pad layer 62 is in the same layer as the second touch pattern layer 72. The orthographic projection of the binding hole 51 on the substrate 10 falls within the range of the orthographic projection of the second pad layer 62 on the substrate 10. For example, the first pad layer 61 and the first touch pattern layer 71 are formed by a single patterning process. The second pad layer 62 and the second touch pattern layer 72 are formed by a single patterning process.

[0079] In some alternative embodiments, see Figure 1 and Figure 2 The touch substrate further includes a waterproof layer 90, which is located between the second touch graphic layer 72 and the third insulating layer 50. By providing the waterproof layer 90, water vapor can be prevented from corroding the touch graphic layer, thereby improving the reliability of the touch substrate.

[0080] In an optional embodiment, the first touch graphic layer 71 includes a plurality of first touch electrodes, the plurality of first touch electrodes are arranged at intervals along the first direction, and the first touch electrodes extend along the second direction. The second touch graphic layer 72 includes a plurality of second touch electrodes, the plurality of second touch electrodes are arranged at intervals along the second direction, the second touch electrodes extend along the first direction, and the first direction intersects the second direction. By staggering the plurality of first touch electrodes and the plurality of second touch electrodes, when different first touch electrodes and / or second touch electrodes are energized, mutual capacitance occurs at different positions to determine the touch position.

[0081] Optionally, the first direction is perpendicular to the second direction.

[0082] On the other hand, some embodiments of the present invention provide a touch display panel, which includes: the above-mentioned touch substrate and a display panel, the touch substrate is located on the light-emitting side of the display panel, and the substrate 10 of the touch substrate is away from the display panel relative to the touch graphic layer 70 of the touch substrate. The touch display panel with the above-mentioned touch substrate has low resistance, better touch smoothness, and obvious visual shadow elimination, good display effect, and improves the user experience.

[0083] The double-layer blackening layer 80 is used in the present invention, which reduces the reflectivity of the touch graphic layer 70 and improves the shadow elimination performance, which can reach LV1.5, and the visual effect is level 1 ultimate one-piece black. It should be noted that LV1.5 means that the metal grid cannot be seen by the naked eye in the front view direction, but the metal grid can be vaguely seen in the side view direction.

[0084] The touch display panel in the utility model can be applied to a vehicle-mounted display screen, providing users with richer and more intuitive information and entertainment experience, and also improving driving comfort and convenience.

[0085] In some embodiments, there are multiple ways to connect the touch substrate and the display panel. For example, the touch substrate is bonded to the display panel through an adhesive layer, and any surface of the touch substrate in the thickness direction can be bonded to the display panel. For example, for some touch display panels with a protective cover, multiple film layers can be directly made on the protective cover in sequence to form a touch substrate, and the surface of the touch substrate opposite to the protective cover is bonded to the display panel, for example, the protective cover serves as the substrate 10 of the touch substrate.

[0086] The display panel is used to display images, for example, it can be an OLED (Organic Light Emitting Diode) display panel, a QLED (Quantum Dot Light Emitting Diodes) display panel, an LCD (Liquid Crystal Display) display panel, a micro LED (including: miniLED or microLED) display panel, etc. The touch substrate is used to sense the touch position. The touch display panel may also include a processor, which can control the display panel to perform corresponding operations according to the touch position sensed on the touch substrate, thereby realizing human-computer interaction.

[0087] The above touch display panel can be applied to televisions, billboards, digital photo frames, laser printers with display functions, telephones, mobile phones, personal digital assistants (PDAs), digital cameras, camcorders, viewfinders, navigators, vehicles, large-area walls, home appliances, information query equipment (such as business query equipment in e-government, banks, hospitals, power and other departments).

[0088] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A touch substrate, characterized in that: The touch control substrate comprises: substrate; At least one touch graphic layer, wherein the touch graphic layer is disposed on one side of the substrate and has a metal grid structure; a blackening layer, wherein the blackening layer is located between the touch pattern layer and the substrate, and an orthographic projection of the blackening layer on the substrate is located within a range of an orthographic projection of the touch pattern layer on the substrate; The thickness of the blackened layer is smaller than the thickness of the touch pattern layer.

2. The touch substrate according to claim 1, characterized in that: The touch graphic layer is multi-layered, the blackened layer is multi-layered, and a surface of each touch graphic layer facing the substrate is connected to a layer of the blackened layer.

3. The touch substrate according to claim 1, characterized in that: The touch control substrate further includes a first insulating layer, and the first insulating layer is located between two adjacent touch control graphic layers.

4. The touch substrate according to claim 1, characterized in that: Each touch graphic layer corresponds to a blackened layer, and the orthographic projection of the blackened layer on the substrate completely overlaps with the orthographic projection of the corresponding touch graphic layer on the substrate.

5. The touch substrate according to claim 1, characterized in that: The substrate has a touch area, the orthographic projection of the touch graphic layer on the substrate overlaps with the touch area, the touch area is rectangular, and the diagonal length of the touch area is greater than 14 inches.

6. The touch control substrate according to any one of claims 1 to 5, characterized in that: The touch substrate further includes a second insulating layer, one of the multiple touch graphic layers closest to the substrate is a first touch graphic layer, and the second insulating layer is located between the first touch graphic layer and the substrate.

7. The touch control substrate according to any one of claims 1 to 5, characterized in that: The touch substrate further includes a light shielding layer. The first touch graphic layer is closest to the substrate among the multiple touch graphic layers. The light shielding layer is located between the first touch graphic layer and the substrate. The light shielding layer has an opening that avoids the touch area.

8. The touch control substrate according to any one of claims 1 to 5, characterized in that: The substrate has a touch area and a binding area, the touch area and the binding area are spaced apart, the touch substrate also includes a third insulating layer and a plurality of binding pads, the plurality of binding pads are located in the binding area, the third insulating layer is arranged on a side of the plurality of binding pads away from the substrate, the third insulating layer has a plurality of spaced apart binding holes, and the orthographic projection of the binding holes on the substrate falls within the orthographic projection range of the binding pads on the substrate.

9. The touch substrate according to claim 8, characterized in that: The edge of the orthographic projection of the binding hole on the substrate is spaced apart from the edge of the orthographic projection of the binding pad on the substrate.

10. The touch control substrate according to claim 8, characterized in that: The touch graphic layer has two layers, and the two touch graphic layers are respectively a first touch graphic layer and a second touch graphic layer in a direction away from the substrate, and a portion of the third insulating layer is located on a side of the second touch graphic layer away from the substrate.

11. The touch control substrate according to claim 10, characterized in that: The bonding pad comprises: A first pad layer, wherein the first pad layer is in the same layer as the first touch pattern layer; A second pad layer, electrically connected to the first pad layer, and the second pad layer is in the same layer as the second touch pattern layer; The orthographic projection of the binding hole on the substrate falls within the orthographic projection range of the second pad layer on the substrate.

12. The touch substrate according to claim 10, characterized in that: The touch control substrate further includes a waterproof layer, and the waterproof layer is located between the second touch control graphic layer and the third insulating layer.

13. A touch display panel, characterized in that: include: The touch substrate according to any one of claims 1 to 12; The touch control substrate is located at the light emitting side of the display panel, and the substrate of the touch control substrate is far away from the display panel relative to the touch control graphic layer of the touch control substrate.

Images