Display substrate, display panel and display device

Abstract

The present application provides a display substrate, a display panel and a display device, wherein the display substrate comprises: a base substrate, comprising a display area and a non-display area surrounding the display area; a data line layer, located on one side of the base substrate, the data line layer comprising a signal line; a shielding layer, located on the side of the data line layer away from the base substrate; a touch layer, located on the side of the data line layer away from the base substrate, the orthographic projection of the signal line on the base substrate at least partially overlaps with the orthographic projection of the touch layer and the shielding layer on the base substrate. By arranging the shielding layer on the side of the data line layer away from the base substrate, the shielding layer can shield the signal line, avoid the signal line from reflecting light, solve the problem of the silver edge at the bottom, and improve the visual effect.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display substrate, a display panel and a display device. Background Art

[0002] With the development of technology, the demand for extremely narrow borders in display terminals is becoming stronger and stronger. Reducing the distance between the display area and the non-display area has become a key link in the design of extremely narrow borders. However, the reduction in the distance between the display area and the non-display area will cause some other problems, such as the bottom silver edge. The bottom silver edge is mainly due to the reflection of the fan-out line (also known as the Fanout line) under a large viewing angle or strong light, resulting in an obvious bright line, which seriously affects the visual effect. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a display substrate, a display panel and a display device.

[0004] Based on the above objectives, the first aspect of the present application provides a display substrate, including:

[0005] A base substrate, comprising a display area and a non-display area surrounding the display area;

[0006] A data line layer, located on one side of the substrate, the data line layer including signal wiring;

[0007] A shielding layer, located at a side of the data line layer away from the base substrate and located in the non-display area;

[0008] The touch layer is located on a side of the data line layer away from the base substrate, and the orthographic projection of the signal line on the base substrate at least partially overlaps with the orthographic projection of the touch layer and the shielding layer on the base substrate.

[0009] Furthermore, the touch layer includes touch electrodes and touch traces, and the orthographic projection of the touch electrodes in the non-display area on the base substrate does not overlap with the orthographic projection of the shielding layer on the base substrate.

[0010] Furthermore, the touch electrode is a mesh structure in the non-display area, and the orthographic projection of the touch electrode of the mesh structure on the base substrate does not overlap with the orthographic projection of the shielding layer on the base substrate.

[0011] Furthermore, the shielding layer and the touch electrodes are arranged in the same layer.

[0012] Furthermore, the shielding layer includes a plurality of shielding units, the shielding units are arranged in grids of the mesh structure, and there is a touch gap between the orthographic projection of the shielding unit on the base substrate and the orthographic projection of the touch electrode on the base substrate.

[0013] Furthermore, the touch electrode includes a first touch layer and a second touch layer, and an interlayer dielectric layer between the first touch layer and the second touch layer, the first touch layer or the second touch layer is the touch electrode, and the shielding layer is arranged on the same layer as the first touch layer and / or the second touch layer.

[0014] Furthermore, the shielding unit is a solid block structure.

[0015] Furthermore, the shielding unit is made of a material with a reflectivity less than or equal to 30%.

[0016] Furthermore, the shape of the shielding unit is adapted to the shape of the grid.

[0017] Furthermore, the minimum distance between each edge of the orthographic projection of the shielding unit on the base substrate and the orthographic projection of the touch electrode on the base substrate is the same, and the distance of the touch gap is 1-6 μm.

[0018] Furthermore, it also includes: a light-shielding layer, which is located on one side of the base substrate and is arranged around the display area in the non-display area, and a light-shielding gap is provided between the light-shielding layer and the display area, and the orthographic projection of the light-shielding gap on the base substrate at least partially overlaps with the orthographic projection of the light-shielding layer on the base substrate.

[0019] Furthermore, the light-shielding layer is an ink layer.

[0020] Furthermore, the non-display area includes a fan-out area, and the signal routing line of the data line layer is located in the fan-out area.

[0021] Based on the same inventive concept, a second aspect of the present application provides a display panel, comprising the display substrate described in any one of the first aspects above.

[0022] Based on the same inventive concept, the third aspect of the present application provides a display device, comprising the display panel described in the second aspect.

[0023] From the above description, it can be seen that the display substrate, display panel and display device provided by the present application, by arranging a shielding layer and a touch layer on the side of the data line layer away from the base substrate, and the orthographic projection of the signal line on the base substrate at least partially overlaps with the orthographic projection of the touch layer and the shielding layer on the base substrate, so that the shielding layer and the touch layer together shield the signal line, avoid reflection of the signal line, and further avoid the generation of a silver edge at the bottom, thereby improving the visual effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural schematic diagram of a display substrate in the prior art;

[0026] Figure 2 This is a schematic diagram of a first structure of a display substrate according to an embodiment of the present application;

[0027] Figure 3 A second structural schematic diagram of a display substrate according to an embodiment of the present application;

[0028] Figure 4 A third structural schematic diagram of a display substrate according to an embodiment of the present application;

[0029] Figure 5 It is a schematic diagram of providing a shielding unit in a touch layer according to an embodiment of the present application;

[0030] Figure 6 This is a schematic diagram of a grid of a touch layer in an embodiment of the present application in which no shielding unit is provided;

[0031] Figure 7 A schematic diagram of providing a shielding unit in a grid of a touch layer according to an embodiment of the present application;

[0032] Figure 8 A schematic diagram of a structure in which a light shielding layer is provided on a display substrate according to an embodiment of the present application;

[0033] Fig. 9 A top view of a display substrate provided with a light shielding layer according to an embodiment of the present application;

[0034] Fig.10 It is a top view of the overlapping of the touch layer and the shielding layer according to the embodiment of the present application.

[0035] In the figure, 1, substrate; 2, data line layer; 21, signal routing; 3, shielding layer; 31, shielding unit; 4, touch layer; 41, first touch layer; 42, second touch layer; 43, interlayer dielectric layer; 5, second packaging layer; 6, light-emitting structure layer; 61, anode; 62, cathode; 7, flat layer; 8, light-shielding layer; 9, light-shielding gap; 10, base; 11, first insulating layer; 12, active layer; 13, second insulating layer; 14a, gate electrode; 14b, first capacitor electrode; 15, insulating layer; 16, second gate electrode layer; 17, fourth insulating layer; 18a, source electrode; 18b, drain electrode; 19, first flat layer; 20, first electrode; 21, pixel definition layer; 22, organic light-emitting layer; 23, second electrode; 24, first packaging layer; 25, touch connection electrode; 26, first coating protection layer; 27, touch electrode. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of 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.

[0038] The current display panel structure is arranged from outside to inside as a non-display area (BB) and a display area (AA). The display area is the area in the panel that can be effectively displayed, that is, the area in the entire panel where the light-emitting unit is arranged. The display area includes multiple data lines, each of which is independently connected to a driver integrated circuit (IC), that is, all data lines are connected to the driver IC in parallel. The driver IC controls these data lines to provide data information for display to the light-emitting pixels in the display area. These data lines (Data Line) are usually led out from the bottom of the display area. The non-display area is the area around the display area, where the drive circuit can be arranged. The non-display area includes a fan-out area, which is located at the bottom frame of the display panel. The fan-out area includes various data lines led out from the bottom of the display panel. These various data lines are also called fan-out lines or fanout wiring.

[0039] refer to Figure 1 The existing display substrate generally includes a driving structure layer, which includes a buffer layer 11, an active layer 12, a first gate insulating layer 13, a first gate electrode layer, an insulating layer 15, a second gate electrode layer 16, a first interlayer insulating layer 17 and a first source-drain metal layer stacked in sequence on a substrate 10. Among them, the first gate electrode layer at least includes a first gate electrode 14a and a first capacitor electrode 14b, a plurality of gate lines (not shown) and a plurality of gate leads (not shown). The second gate electrode layer 16 at least includes a second capacitor electrode and a second gate lead (not shown), and the position of the second capacitor electrode corresponds to the position of the first capacitor electrode 14b. The first source-drain metal layer at least includes a first source electrode 18a, a first drain electrode 18b, a low voltage (VSS) line (not shown), a plurality of data lines (not shown) and a plurality of data leads (not shown), and the first source electrode 18a and the first drain electrode 18b are respectively connected to the active layer 12 through a first via. According to actual needs, the first source-drain metal layer may also include a power line (VDD), a compensation line, etc.

[0040] The display substrate also includes a first flat layer 19, a first electrode 20, a pixel definition layer 21, an organic light-emitting layer 22, a second electrode 23, an encapsulation layer 24, a touch structure layer, a second coating protection layer (not shown), an optical adhesive (not shown), and a cover plate (not shown) which are sequentially arranged. The first flat layer 19 is arranged on the driving structure layer, the first electrode 20 is arranged on the first flat layer 19, and is connected to the first thin film transistor in the driving structure layer through a via hole opened on the first flat layer 19, the pixel definition layer 21 is arranged on the first flat layer 19, and includes a plurality of pixel openings, the pixel openings expose the first electrode 20, the organic light-emitting layer 22 is arranged on the first electrode 20; the second electrode 23 is arranged on the organic light-emitting layer 22, and the encapsulation layer 24 is arranged on the second electrode 23 and covers the entire substrate 10.

[0041] The touch structure layer includes a touch connection electrode 25, a first coating protective layer 26 covering the touch connection electrode 25, and a touch electrode 27 arranged on the first coating protective layer 26. The touch electrode 27 includes a first touch electrode and a second touch electrode. At least one of the first touch electrode and the second touch electrode is connected to the touch connection electrode 25 through a via hole penetrating the first coating protective layer 26.

[0042] With the development of display technology, the demand for extremely narrow bezels in display terminals has become increasingly strong, and reducing the distance between the display area and the non-display area has become a key link in the design of an extremely narrow bezel. However, the reduction in the distance between the display area and the non-display area will cause some other problems. As the distance between the display area and the non-display area becomes smaller and smaller, the multiple gate lines and multiple gate leads of the first gate electrode layer and the second gate electrode layer 16 become increasingly concentrated, so that the first gate electrode layer and the second gate electrode layer 16 are uneven. The unevenness of the first gate electrode layer and the second gate electrode layer 16 will cause reflection of the fanout routing, and a bright edge will be generated when this position is observed at a large angle, which is particularly serious under strong light, resulting in a silver edge at the bottom.

[0043] By coating the non-display area with ink, the reflection of a large number of metal blocks and Fanout wiring can be avoided, and the silver edge at the bottom can be appropriately reduced. However, due to the limitation of ink coating accuracy, in order to avoid the ink intrusion into the display area, the ink design center value needs to be at a certain distance from the display area (usually at least 0.15mm), so the ink may not cover a certain area away from the edge of the display area, and the Fanout wiring leaked in this area will still cause the silver edge at the bottom.

[0044] Research has found that the surface of the touch electrode is black under light and has a low reflectivity, which can play a certain role in shielding the Fanout wiring. Figure 1 As shown, since most of the existing touch electrodes are mesh structures, the gaps in the mesh structure cannot shield the Fanout wiring, so that the bottom silver edge problem is still very serious.

[0045] Based on the above problems, the present application proposes a display substrate, a display panel and a display device, by setting a shielding layer 3 and a touch layer 4 on the side of the data line layer 2 away from the base substrate 1 to shield the signal line 21, avoid the signal line 21 from reflecting light, and solve the problem of the silver edge at the bottom.

[0046] Specifically, refer to Figure 2In a first aspect, the present application provides a display substrate, comprising: a base substrate 1, comprising a display area and a non-display area surrounding the display area; a data line layer 2, located on one side of the base substrate 1, the data line layer 2 comprising a signal line 21; a shielding layer 3, located on a side of the data line layer 2 away from the base substrate 1, and located in the non-display area; a touch layer 4, located on a side of the data line layer 2 away from the base substrate 1, the orthographic projection of the signal line 21 on the base substrate 1 is located within the orthographic projections of the touch layer 4 and the shielding layer 3 on the base substrate 1.

[0047] Specifically, the base substrate 1 may be a flexible substrate or a rigid substrate. The flexible substrate may include a stacked first flexible material layer, a first inorganic material layer, a semiconductor layer, a second flexible material layer, and a second inorganic material layer. The materials of the first flexible material layer and the second flexible material layer may be made of polymers, such as imide (PI), polyethylene terephthalate (PET), or a surface-treated soft polymer film. The materials of the first inorganic material layer and the second inorganic material layer may be silicon nitride (SiNx) or silicon oxide (SiOx), etc., to improve the water resistance and oxygen resistance of the base substrate 1. The material of the semiconductor layer may be amorphous silicon (a-Si).

[0048] The base substrate 1 includes a display area and a non-display area surrounding the display area, the non-display area includes a fan-out area, and the signal routing of the data line layer is located in the fan-out area. The signal routing may include alternating first routing and second routing, and the first routing and the second routing are respectively arranged in the same layer as the first gate electrode layer and the second gate electrode layer.

[0049] The shielding layer 3 is located on the side of the data line layer 2 away from the base substrate 1, and the shielding layer 3 can be made of a material with low reflectivity. The shielding layer 3 has a low reflectivity, so that the shielding layer 3 can shield the signal wiring 21 to prevent the signal wiring 21 from reflecting light, and the light shielding layer 8 itself will not reflect light, thereby preventing the appearance of a silver edge at the bottom.

[0050] The touch layer 4 is located on a side of the data line layer 2 away from the base substrate 1, and the positional relationship between the touch layer 4 and the shielding layer 3 is not limited, that is, the touch layer 4 can be located between the shielding layer 3 and the data line layer 2, the touch layer 4 can also be arranged on the same layer as the shielding layer 3, and the touch layer 4 can also be located on a side of the shielding layer 3 away from the data line layer 2.

[0051] The orthographic projection of the signal wiring 21 on the base substrate 1 is located within the orthographic projections of the touch layer 4 and the shielding layer 3 on the base substrate 1, so that the touch layer 4 and the shielding layer 3 together shield the signal wiring 21, thereby improving the shielding effect and further avoiding the generation of a bottom silver edge.

[0052] The touch layer 4 may be made of a material with a lower reflectivity to match the shielding layer 3, and the two can better shield the signal trace 21. The material of the touch layer 4 and the shielding layer 3 may be the same or different, which is not limited here.

[0053] The display substrate provided by the present application is provided with a shielding layer 3 and a touch layer 4 on the side of the data line layer 2 away from the base substrate 1, and the orthographic projection of the signal line 21 on the base substrate 1 at least partially overlaps with the orthographic projection of the touch layer 4 and the shielding layer 3 on the base substrate, so that the shielding layer 3 and the touch layer 4 together shield the signal line 21 to avoid reflection of the signal line 21, thereby avoiding the generation of a silver edge at the bottom and improving the visual effect.

[0054] In some embodiments, reference Fig.10 The touch layer 4 includes touch electrodes (i.e. Fig.10 The mesh structure in the Fig.10 The area where the touch electrode is located in the non-display area overlaps with the area where the shielding layer 3 is located. Specifically, the touch electrode overlaps with the area where the shielding layer 3 is located, including that the shielding layer 3 can shield the area where the touch electrode is located, and can also shield the area where the touch electrode and the touch wiring are located at the same time, so that the shielding layer 3 can shield the area where the touch electrode is located, and then the shielding layer 3 can shield the gaps in the area where the touch electrode is located, so as to prevent the signal wiring 21 from being exposed from these gaps, thereby causing reflection.

[0055] In some embodiments, the shielding layer 3 and the touch electrode are disposed in the same layer.

[0056] Specifically, the shielding layer 3 and the touch electrode are arranged in the same layer, that is, the shielding layer 3 and the touch electrode are formed simultaneously by the same patterning process and the materials used for both are the same. The shielding layer 3 and the touch electrode are arranged in the same layer, which can simplify the preparation process.

[0057] In some embodiments, the touch layer 4 includes touch electrodes and touch traces, and the orthographic projection of the touch electrodes in the non-display area on the base substrate 1 does not overlap with the orthographic projection of the shielding layer 3 on the base substrate 1 .

[0058] Specifically, the orthographic projection of the shielding layer 3 on the base substrate 1 does not overlap with the orthographic projection of the touch electrode in the non-display area on the base substrate 1, that is, the shielding layer 3 does not contact the touch electrode, and there is a gap between them, which can prevent the shielding layer 3 from contacting the touch electrode and causing a short circuit.

[0059] In some embodiments, the touch electrode is a mesh structure in the non-display area, and the orthographic projection of the touch electrode of the mesh structure on the base substrate 1 does not overlap with the orthographic projection of the shielding layer 3 on the base substrate 1 .

[0060] Specifically, the orthographic projection of the touch electrode of the mesh structure on the base substrate 1 does not overlap with the orthographic projection of the shielding layer 3 on the base substrate 1, that is, the shielding layer 3 does not contact the touch electrode of the mesh structure, and there is a gap between them, which can prevent the shielding layer 3 from contacting the touch electrode and causing a short circuit.

[0061] The mesh shape of the touch electrodes may be a rhombus shape, for example, a regular rhombus, a horizontal rhombus or a vertical elongated rhombus, or may be any one or more of polygons such as a triangle, a square, a trapezoid, a parallelogram, a pentagon, a hexagon, etc.

[0062] In some embodiments, reference Figure 3 and Figure 5 The shielding layer 3 includes a plurality of shielding units 31, and the shielding units 31 are arranged in the grids of the mesh structure. There is a touch gap between the orthographic projection of the shielding unit 31 on the base substrate and the orthographic projection of the touch electrode on the base substrate.

[0063] Specifically, the shielding layer 3 includes a plurality of shielding units 31 , and the plurality of shielding units 31 are independently arranged and do not contact each other.

[0064] The touch electrode is a mesh structure in the non-display area, and the shielding unit 31 is provided in each grid of the mesh structure. By providing the shielding unit 31 in each grid, the shielding unit 31 and the mesh-shaped touch electrode together shield the signal wiring 21, so as to prevent the signal wiring 21 from being exposed from the gaps in the mesh and then generating reflections. The shape of the shielding unit 31 is adapted to the shape of the mesh of the touch electrode of the mesh structure. For example, when the mesh shape is a triangle, the shielding unit 31 is also a triangle, and when the mesh shape is a rhombus, the shielding unit 31 is also a rhombus. The shape of the shielding unit 31 is adapted to the shape of the mesh, so as to reduce the gap between the shielding unit 31 and the touch electrode as much as possible to increase the shielding area.

[0065] There is a touch gap between the shielding unit 31 and the touch electrode to avoid contact between the shielding unit 31 and the touch electrode, thereby preventing the touch electrode from short-circuiting. The touch gap is as small as possible. On the premise of ensuring that the shielding unit 31 and the touch electrode do not contact each other, the distance of the touch gap is reduced as much as possible, so that the shielding unit 31 and the grid-shaped touch electrode can shield most of the signal wiring 21, thereby preventing a small portion of the signal wiring 21 exposed in the touch gap from generating obvious reflections.

[0066] The minimum distances between the edges of the orthographic projection of the shielding unit 31 on the substrate and the orthographic projection of the touch electrode on the substrate are the same, so that the gaps between the edges of the shielding unit 31 and the touch electrode are basically consistent, which is more conducive to shielding the signal trace 21. It is worth noting that the same minimum distances mentioned in this application refer to the deviation of the minimum distance between the edges of the orthographic projection of the shielding unit 31 on the substrate and the orthographic projection of the touch electrode on the substrate within plus or minus 2 μm.

[0067] Further, the distance of the touch gap is 1 to 6 μm, and further, the distance of the touch gap is 2 to 4 μm. The distance of the touch gap is 1 to 6 μm, which can ensure that the shielding unit 31 does not contact the touch electrode, avoiding the shielding unit 31 from contacting the touch electrode and causing a short circuit, resulting in touch failure; and can ensure that the gap between the shielding unit 31 and the touch electrode is not too large, so that the shielding unit 31 can shield the signal wiring 21 with a large area, avoiding the generation of silver light at the bottom. When the distance of the touch gap is less than 1 μm, on the one hand, the requirements for the preparation process are too strict, which is not conducive to actual preparation, and it is very likely to cause the shielding unit 31 to contact the touch electrode; when the distance of the touch gap is greater than 6 μm, the gap between the shielding unit 31 and the touch electrode is too large, so that the area of ​​the exposed signal wiring 21 is large, and the phenomenon of silver edge at the bottom may appear.

[0068] refer to Figure 6 and Figure 7 , Figure 6 is a schematic diagram of a grid-shaped touch electrode without a shielding unit 31, Figure 7 FIG. 3 is a schematic diagram of a shielding unit 31 disposed in a grid-shaped touch electrode. Figure 6 It can be seen that there is no shielding unit 31 in the grid. At this time, only the grid-shaped touch electrodes can shield the signal wiring 21, while the gaps in the grid cannot shield the signal wiring 21, so that the signal wiring 21 is exposed from the gaps in the grid, thereby generating reflections. Figure 7By setting the shielding unit 31 in the grid, the shielding unit 31 and the grid-shaped touch electrodes shield the signal wiring 21 together, so that most of the signal wiring 21 are shielded, thereby avoiding the generation of the bottom silver edge.

[0069] In some embodiments, the touch electrode includes a first touch layer 41 and a second touch layer 42, and an interlayer dielectric layer between the first touch layer and the second touch layer, the first touch layer 41 or the second touch layer 42 is the touch electrode, and the shielding layer 3 is arranged on the same layer as the first touch layer 41 and / or the second touch layer 42.

[0070] Specifically, the first touch layer 41 or the second touch layer 42 is a touch electrode with a mesh structure. When the first touch layer 41 is a touch electrode with a mesh structure, the second touch layer 42 is a touch connection electrode or a bridge electrode; when the second touch layer 42 is a touch electrode with a mesh structure, the first touch layer 41 is a touch connection electrode or a bridge electrode. In this embodiment, the first touch layer 41 is the touch electrode, and the second touch layer 42 is a touch connection electrode or a bridge electrode.

[0071] The first touch layer 41 includes a first touch electrode and a second touch electrode, and at least one of the first touch electrode and the second touch electrode is connected to the second touch layer 42 through a via penetrating the interlayer dielectric layer 43. The first touch electrode may be a drive (Tx) electrode, and the second touch electrode may be a sense (Rx) electrode. Alternatively, the first touch electrode may be a sense (Rx) electrode, and the second touch electrode may be a drive (Tx) electrode. The first touch electrode and the second touch electrode may be in the form of a metal grid, wherein the metal grid is formed by interweaving a plurality of metal wires, and the metal grid includes a plurality of grid patterns, and the grid pattern is a polygon composed of a plurality of metal wires. The first touch electrode and the second touch electrode in the form of a metal grid have the advantages of low resistance, small thickness, and fast response speed.

[0072] The first touch control layer 41 and the second touch control layer 42 are connected through a via hole in an interlayer dielectric layer 43. The interlayer dielectric layer 43 may be an insulating material layer. The insulating material may be silicon oxide (SiO x ), Silicon Nitride (SiN x ) and silicon oxynitride (SiON) and the interlayer dielectric layer 43 can be a single layer, a multi-layer or a composite layer.

[0073] In some embodiments, the shielding layer 3 is disposed in the same layer as the first touch layer 41 and / or the second touch layer 42, that is, the shielding layer 3 can be disposed in the same layer as the first touch layer 41 or the second touch layer 42, or the shielding layer 3 is disposed in the same layer as both the first touch layer 41 and the second touch layer 42. The shielding layer 3 is disposed in the same layer as the first touch layer 41 and / or the second touch layer 42, which can flexibly dispose the shielding unit 31 in the first touch layer 41 and / or the second touch layer 42 according to actual needs, and also facilitates the preparation process.

[0074] In some embodiments, reference Figure 3 The shielding layer 3 is disposed on the same layer as the first touch layer 41 , and the shielding units 31 are disposed in the grids of the first touch layer 41 .

[0075] In some embodiments, reference Figure 4 The shielding layer 3 and the first touch layer 41 and the second touch layer 42 are arranged in the same layer, and the shielding units 31 are arranged in the grids of the first touch layer 41 and the second touch layer 42 .

[0076] In some embodiments, the shielding unit 31 is a solid block structure. The shielding unit 31 of the solid block structure can shield the signal wiring 21 over a large area to avoid the generation of silver light at the bottom.

[0077] In some embodiments, the shielding unit 31 is made of a material with a relatively low reflectivity. Specifically, the reflectivity of the shielding unit 31 may be less than or equal to 30%. Specifically, the shielding unit 31 has a relatively low reflectivity, so that the shielding unit 31 can shield the signal wiring 21 to prevent the signal wiring 21 from reflecting light, and the shielding unit 31 itself will not reflect light, thereby preventing the appearance of a silver edge at the bottom. In this embodiment, the shielding unit 31 and the touch layer 4 are both made of a titanium / aluminum / titanium three-layer composite metal material.

[0078] In some embodiments, the refractive index of the shielding unit 31 is 1.46 to 2.77, and the extinction coefficient is 2.10 to 3.31. The refractive index and extinction coefficient of the shielding unit 31 are within this range, which can ensure that the shielding unit 31 has a smaller reflectivity, so that the shielding unit 31 can better shield the signal line 21.

[0079] In some embodiments, reference Figure 8 and Fig. 9The display substrate further includes: a light shielding layer 8, which is located on one side of the base substrate 1 and is arranged around the display area in the non-display area, and a light shielding gap 9 is provided between the light shielding layer 8 and the display area, and the orthographic projection of the light shielding gap 9 on the base substrate 1 at least partially overlaps with the orthographic projection of the blocking layer 3 on the base substrate 1.

[0080] Specifically, the light shielding layer 8 is made of a light shielding material and can be coated on a large area in the non-display area to shield the non-display area. In this embodiment, the light shielding layer 8 is an ink layer.

[0081] There is a light shielding gap 9 between the light shielding layer 8 and the display area to prevent ink from invading the display area. The orthographic projection of the light shielding gap 9 on the base substrate 1 at least partially overlaps with the orthographic projection of the shielding layer 3 on the base substrate 1. The light shielding gap 9 is shielded by the shielding layer 3 to prevent the signal wiring 21 from reflecting light from the light shielding gap 9, thereby preventing the generation of a silver edge at the bottom.

[0082] In some embodiments, reference Figure 3 The display substrate further includes a planar layer 7 , wherein the planar layer 7 is located between the data line layer 2 and the touch control layer 4 , and the planar layer 7 is used to cover the data line layer 2 .

[0083] In some embodiments, reference Figure 3 The display substrate further includes a light emitting structure layer 6, and the light emitting structure layer 6 is located between the flat layer 7 and the touch layer 4. The light emitting structure layer 6 may include an anode 61, a pixel definition layer, an organic light emitting layer (not shown in the figure), and a cathode 62. The anode 61 is arranged on the flat layer 7, the pixel definition layer is arranged on the anode 61 and the flat layer 7, the pixel opening is arranged on the pixel definition layer, and the pixel opening exposes the anode. The organic light emitting layer is at least partially arranged in the pixel opening, and the organic light emitting layer is connected to the anode 61. The cathode 62 is arranged on the organic light emitting layer, and the cathode 62 is connected to the organic light emitting layer.

[0084] In some embodiments, the organic light-emitting layer in the light-emitting structure layer 6 may include one or more layers of an emission layer (EML), a hole injection layer (HIL), a hole transport layer (HTL), a hole blocking layer (HBL), an electron blocking layer (EBL), an electron injection layer (EIL), and an electron transport layer (ETL). Driven by the voltage of the anode 61 and the cathode 62, the light-emitting characteristics of the organic material are utilized to emit light according to the required grayscale.

[0085] In some embodiments, the light-emitting layers of OLED light-emitting elements of different colors are different. For example, a red light-emitting element includes a red light-emitting layer, a green light-emitting element includes a green light-emitting layer, and a blue light-emitting element includes a blue light-emitting layer. In order to reduce the difficulty of the process and improve the yield, the hole injection layer and the hole transport layer on one side of the light-emitting layer can use a common layer, and the electron injection layer and the electron transport layer on the other side of the light-emitting layer can use a common layer.

[0086] In some embodiments, the hole injection layer, the hole transport layer, the electron injection layer, and the electron transport layer can be made by the same process (evaporation process or inkjet printing process), and isolation can be achieved by the surface step difference of the film layer formed or by surface treatment. For example, the organic light-emitting layer can be formed by evaporation using a fine metal mask (FMM) or an open mask (OpenMask), or by using an inkjet process, and isolation can be achieved by the surface step difference of the film layer formed or by surface treatment to isolate any one or more layers of the hole injection layer, hole transport layer, electron injection layer, and electron transport layer corresponding to adjacent sub-pixels.

[0087] In some embodiments, reference Figure 3 The display substrate further includes a second encapsulation layer 5, which is located between the touch layer 4 and the light-emitting structure layer 6. The second encapsulation layer 5 may include a stacked encapsulation layer 1, an encapsulation layer 2, and an encapsulation layer 3, wherein the encapsulation layer 1 and the encapsulation layer 3 may be made of inorganic materials, and the encapsulation layer 2 may be made of organic materials. The encapsulation layer 2 is arranged between the encapsulation layer 1 and the encapsulation layer 3, so as to ensure that external water vapor cannot enter the light-emitting structure layer 6.

[0088] Based on the same inventive concept, the second aspect of the present application provides a display panel, comprising any of the display substrates described above. The display panel has the technical effects described in any of the above embodiments, which will not be described in detail here.

[0089] Based on the same inventive concept, the third aspect of the present application provides a display device, comprising the above display panel. The display device has the technical effects described in any of the above embodiments, which will not be described in detail here.

[0090] It should be noted that the display device can be a product with an image display function, such as: a monitor, a television, a billboard, a digital photo frame, a laser printer with a display function, a telephone, a mobile phone, a personal digital assistant (PDA), a digital camera, a portable camcorder, a viewfinder, a navigator, a vehicle, a large-area wall, a home appliance, an information query device (such as business query equipment and monitors of e-government, banks, hospitals, power and other departments).

[0091] In some embodiments, the display device may further include a driving circuit coupled to the display panel, wherein the driving circuit is configured to provide a corresponding electrical signal to the display panel.

[0092] It should be noted that the above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0093] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0094] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A display substrate, characterized in that: include: A base substrate, comprising a display area and a non-display area surrounding the display area; A data line layer, located on one side of the substrate, the data line layer including signal wiring; A shielding layer, located on a side of the data line layer away from the base substrate and located in the non-display area; A touch layer is located on a side of the data line layer away from the base substrate, an orthographic projection of the signal line on the base substrate at least partially overlaps with an orthographic projection of the touch layer and the shielding layer on the base substrate, the touch layer comprises touch electrodes and touch lines, an orthographic projection of the touch electrodes located in a non-display area on the base substrate does not overlap with an orthographic projection of the shielding layer on the base substrate, and the touch electrodes are a mesh structure in the non-display area; The shielding layer includes a plurality of shielding units, the shielding units are arranged in the grids of the mesh structure, and there is a touch gap between the orthographic projection of the shielding unit on the base substrate and the orthographic projection of the touch electrode on the base substrate.

2. The display substrate according to claim 1, characterized in that: The orthographic projection of the touch electrode of the mesh structure on the base substrate does not overlap with the orthographic projection of the shielding layer on the base substrate.

3. The display substrate according to claim 1, characterized in that: The shielding layer is arranged on the same layer as the touch electrode.

4. The display substrate according to claim 1, characterized in that: The touch layer includes a first touch layer, a second touch layer and an interlayer dielectric layer between the first touch layer and the second touch layer. The first touch layer or the second touch layer is the touch electrode. The shielding layer is arranged on the same layer as the first touch layer and / or the second touch layer.

5. The display substrate according to claim 1, characterized in that: The shielding unit is a solid block structure.

6. The display substrate according to claim 1, characterized in that: The shape of the shielding unit is adapted to the shape of the grid.

7. The display substrate according to claim 1, characterized in that: The minimum distance between each edge of the orthographic projection of the shielding unit on the base substrate and the orthographic projection of the touch electrode on the base substrate is the same, and the distance of the touch gap is 1-6 μm.

8. The display substrate according to claim 1, characterized in that: Also includes: A shading layer is located on one side of the base substrate, is arranged around the display area in the non-display area, and has a shading gap between the shading layer and the display area. The orthographic projection of the shading gap on the base substrate at least partially overlaps with the orthographic projection of the shading layer on the base substrate.

9. The display substrate according to claim 8, characterized in that: The light-shielding layer is an ink layer.

10. The display substrate according to claim 1, characterized in that: The non-display area includes a fan-out area, and the signal wiring of the data line layer is located in the fan-out area.

11. A display panel, characterized in that: The display substrate comprises any one of claims 1 to 10.

12. A display device, characterized in that: Includes the display panel as claimed in claim 11.

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