CN115568252A - Display substrate, display panel and display device - Google Patents

Abstract

The application provides a display substrates, display panel and display device, display substrates includes: the substrate comprises a display area and a non-display area surrounding the display area; the data line layer is positioned on one side of the substrate and comprises signal routing; the shielding layer is positioned on one side of the substrate base plate, which is far away from the data line layer; the touch layer is positioned on one side, away from the data line layer, of the substrate base plate, and the orthographic projection of the signal routing on the substrate base plate is at least partially overlapped with the orthographic projection of the touch layer and the orthographic projection of the shielding layer on the substrate base plate. One side of keeping away from the data line layer at substrate base plate sets up the shielding layer for the shielding layer can walk the line to the signal and shelter from, avoids the signal to walk the line reflection of light, has solved the production of bottom silver limit, promotes visual effect.

Description

Display substrate, display panel and display device

Technical Field

The application relates to the technical field of display, in particular to a display substrate, a display panel and a display device.

Background

With the development of technology, the demand of the display terminal for the extremely narrow bezel is more and more strong, and the reduction of the distance between the display area and the non-display area becomes a key part in the extremely narrow bezel design scheme, but the reduction of the distance between the display area and the non-display area causes other problems, such as a bottom silver edge. The silver edge at the bottom is mainly due to the fact that a fan-out line (also called Fanout line) can be reflected under the irradiation of large visual angle or strong light, an obvious bright line is generated, and the visual effect is seriously influenced.

Disclosure of Invention

In view of the above, an object of the present application is to provide a display substrate, a display panel and a display device.

In view of the above, a first aspect of the present application provides a display substrate, comprising:

the substrate comprises a display area and a non-display area surrounding the display area;

the data line layer is positioned on one side of the substrate and comprises signal wires;

the shielding layer is positioned on one side of the substrate far away from the data line layer and positioned in the non-display area;

the touch layer is positioned on one side of the substrate base plate, which is far away from the data line layer, and the orthographic projection of the signal wiring on the substrate base plate is at least partially overlapped with the orthographic projection of the touch layer and the orthographic projection of the shielding layer on the substrate base plate.

Furthermore, the touch layer comprises a touch electrode and a touch trace, and the orthographic projection of the touch electrode on the substrate base plate in the non-display area is not overlapped with the orthographic projection of the shielding layer on the substrate base plate.

Furthermore, the touch electrode is of a mesh structure in the non-display area, and the orthographic projection of the touch electrode of the mesh structure on the substrate base plate is not overlapped with the orthographic projection of the shielding layer on the substrate base plate.

Furthermore, the shielding layer and the touch electrode are arranged on the same layer.

Furthermore, the shielding layer comprises a plurality of shielding units, the shielding units are arranged in the grids of the mesh structure, and a touch gap is formed between the orthographic projection of the shielding units on the substrate base plate and the orthographic projection of the touch electrode on the substrate base plate.

Further, 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 disposed on the same layer as the first touch layer and/or the second touch layer.

Furthermore, the shielding unit is of a solid block structure.

Further, the shielding unit is made of a material with the reflectivity less than or equal to 30%.

Further, the shape of the shielding unit is adapted to the shape of the grid.

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

Further, still include: the light shielding layer is positioned on one side of the substrate, is arranged around the display area in the non-display area, has a light shielding gap between the light shielding layer and the display area, and at least partially coincides with the orthographic projection of the light shielding gap on the substrate and the orthographic projection of the shielding layer on the substrate.

Further, the light shielding layer is an ink layer.

Further, the non-display area includes a fan-out area, and the signal traces of the data line layer are located in the fan-out area.

Based on the same inventive concept, a second aspect of the present application provides a display panel including the display substrate of any one of the first aspects.

Based on the same inventive concept, a third aspect of the present application provides a display device including the display panel of the second aspect.

From the above, can see out, display substrate, display panel and display device that this application provided set up shielding layer and touch-control layer through keeping away from one side on the data line layer at the substrate base plate to the orthographic projection of signal wiring on the substrate base plate and touch-control layer and the orthographic projection of shielding layer on the substrate base plate at least partly coincide, make shielding layer and touch-control layer shelter from the signal wiring together, avoid the signal to walk the line reflection of light, and then avoid the production of bottom silver limit, promote visual effect.

Drawings

In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for the embodiments or related technologies in the following description are briefly introduced, and it is obvious that the drawings in the following description are only the embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art display substrate;

FIG. 2 is a schematic view of a first structure of a display substrate according to an embodiment of the present disclosure;

FIG. 3 is a second structural diagram of a display substrate according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a third structure of a display substrate according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram illustrating a shielding unit disposed in a touch layer according to an embodiment of the present disclosure;

fig. 6 is a schematic view illustrating that no shielding unit is disposed in a grid of the touch layer according to the embodiment of the present application;

FIG. 7 is a schematic view illustrating a shielding unit disposed in a grid of a touch layer according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a display substrate with a light-shielding layer according to an embodiment of the present disclosure;

FIG. 9 is a top view of a display substrate with a light-shielding layer according to an embodiment of the present disclosure;

fig. 10 is a top view of the touch layer and the blocking layer overlapping according to the embodiment of the present disclosure.

In the figure, 1, a substrate base plate; 2. a data line layer; 21. routing signals; 3. a shielding layer; 31. a shielding unit; 4. a touch layer; 41. a first touch layer; 42. a second touch layer; 43. an interlayer dielectric layer; 5. a second encapsulation layer; 6. a light emitting structure layer; 61. an anode; 62. a cathode; 7. a planarization layer; 8. a light-shielding layer; 9. a light-shielding gap; 10. a substrate; 11. a first insulating layer; 12. an active layer; 13. a second insulating layer; 14a, a gate electrode; 14b, a first capacitor electrode; 15. an insulating layer; 16. a second gate electrode layer; 17. a fourth insulating layer; 18a, a source electrode; 18b, a drain electrode; 19. a first planar layer; 20. a first electrode; 21. a pixel defining layer; 22. an organic light-emitting layer; 23. a second electrode; 24. a first encapsulation layer; 25. touch-control connecting electrodes; 26. a first coating protective layer; 27. and a touch electrode.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to the accompanying drawings in combination with specific embodiments.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should have a general meaning as understood by those having ordinary skill in the art to which the present application belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the present application is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The current display panel is structurally arranged to be a non-display area (BB) and a display area (AA) from outside to inside in sequence, and the display area is an area capable of effectively displaying in the panel, that is, an area where light emitting units are arranged in the whole panel. The display area includes a plurality of Data lines, each of which is independently connected to a driving Integrated Circuit (IC), i.e., all the Data lines are connected to the driving IC in parallel, and the driving IC controls the Data lines to provide Data information for display to the light-emitting pixels in the display area, and the Data lines (Data lines) are usually led out from the lower side of the display area. The non-display area is a peripheral area of the display area, the driving circuit can be arranged in the partial area, the non-display area comprises a fan-out area, the fan-out area is located at the position of a lower frame of the display panel, various data lines led out from the lower portion of the display panel are arranged in the fan-out area, and the various data lines are also called fan-out lines or fanout lines.

Referring to fig. 1, a conventional display substrate generally includes a driving structure layer, where the driving structure layer 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, which are sequentially stacked on a substrate 10. Among them, the first gate electrode layer includes at least a first gate electrode 14a and a first capacitor electrode 14b, a plurality of gate lines (not shown), and a plurality of gate wirings (not shown). The second gate electrode layer 16 includes at least a second capacitor electrode and a second gate wiring (not shown), and the position of the second capacitor electrode corresponds to the position of the first capacitor electrode 14 b. 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 first vias. According to actual needs, the first source-drain metal layer may further include a power line (VDD), a compensation line, and the like.

The display substrate further includes a first planarization 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 control structure layer, a second coating protection layer (not shown), an optical adhesive (not shown), and a cover plate (not shown) sequentially disposed. 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 with a first thin film transistor in the driving structure layer through a via hole formed in the first flat layer 19, the pixel defining layer 21 is arranged on the first flat layer 19 and comprises a plurality of pixel openings, the pixel openings expose the first electrode 20, and the organic light emitting layer 22 is arranged on the first electrode 20; the second electrode 23 is disposed on the organic light emitting layer 22, and the encapsulation layer 24 is disposed on the second electrode 23 and covers the entire substrate 10.

The touch structure layer includes a touch connection electrode 25, a first coating protection layer 26 covering the touch connection electrode 25, and a touch electrode 27 disposed on the first coating protection layer 26, where the touch electrode 27 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 touch connection electrode 25 through a via hole penetrating through the first coating protection layer 26.

With the development of display technologies, the demand of display terminals for extremely narrow frames is more and more strong, and reducing the distance between the display area and the non-display area is a critical part in the extremely narrow frame design scheme, but the reduction of the distance between the display area and the non-display area causes some other problems. As the distance between the display region and the non-display region becomes smaller, the plurality of gate lines and the plurality of gate leads of the first gate electrode layer and the second gate electrode layer 16 are gathered more and more, so that the first gate electrode layer and the second gate electrode layer 16 are uneven. The uneven first gate electrode layer and the uneven second gate electrode layer 16 can cause the fanout wiring to be reflected, a bright edge can be generated when the position is observed at a large angle, and the bright edge is serious under strong light, so that a bottom silver edge is caused.

By coating the ink on the non-display area, a large number of metal blocks and Fanout wiring reflection can be avoided, and the generation of silver edges at the bottom can be properly reduced. However, due to the limitation of ink application accuracy, the ink design center needs to be spaced a certain distance (usually at least 0.15 mm) from the display area to avoid ink intrusion into the display area, so that the ink may not cover a certain area away from the display area boundary, and the leaked Fanout traces in this area still cause the bottom silver edge.

Researches show that the surface layer of the touch electrode is black under illumination and has low reflectivity, and the touch electrode can play a certain role in shielding Fanout wiring. However, as shown in fig. 1, most of the conventional touch electrodes are mesh structures, so that the void portions in the mesh structures cannot shield Fanout traces, and the problem of silver edge at the bottom is still serious.

Based on above problem, this application has provided a display substrates, display panel and display device, sets up shielding layer 3 and touch-control layer 4 through keeping away from one side of data line layer 2 at substrate base plate 1 to walk line 21 to the signal and shelter from, avoid the signal to walk the reflection of light of line 21, solved the production of bottom silver limit.

Specifically, referring to fig. 2, a first aspect of the present application provides a display substrate, including: the substrate base plate 1 comprises a display area and a non-display area surrounding the display area; the data line layer 2 is positioned on one side of the substrate 1, and the data line layer 2 comprises a signal routing 21; the shielding layer 3 is positioned on one side of the substrate base plate 1, which is far away from the data line layer 2, and is positioned in the non-display area; and the touch layer 4 is positioned on one side of the substrate base plate 1 far away from the data line layer 2, and the orthographic projection of the signal routing 21 on the substrate base plate 1 is positioned in the orthographic projection of the touch layer 4 and the shielding layer 3 on the substrate base plate 1.

Specifically, the substrate 1 may be a flexible substrate or a rigid substrate. The flexible substrate may include a first flexible material layer, a first inorganic material layer, a semiconductor layer, a second flexible material layer, and a second inorganic material layer, which are stacked. The material of the first and second flexible material layers may be made of a polymer, and may be, for example, imide (PI), polyethylene terephthalate (PET), or a surface-treated soft polymer film, the material of the first and second inorganic material layers may be silicon nitride (SiNx), silicon oxide (SiOx), or the like, to improve water resistance and oxygen resistance of the substrate base 1, and the material of the semiconductor layer may be amorphous silicon (a-si).

The substrate base plate 1 comprises a display area and a non-display area surrounding the display area, the non-display area comprises a fan-out area, and the signal routing of the data line layer is located in the fan-out area. The signal routing lines may include first and second alternating routing lines, which are disposed in the same layer as the first and second gate electrode layers, respectively.

The shielding layer 3 is located on one side of the substrate base plate 1 far away from the data line layer 2, and the shielding layer 3 can be made of a material with low reflectivity. The reflectivity on shielding layer 3 is lower for shielding layer 3 both can shelter from the signal and walk line 21, avoid the signal to walk the reflection of light of line 21, light shield layer 8 self reflection of light phenomenon also can not appear simultaneously, and then avoids the appearance on bottom silver limit.

The touch layer 4 is located on one side of the substrate base plate 1 away from the data line layer 2, and the position relationship between the touch layer 4 and the shielding layer 3 is not limited, that is, the touch layer 4 may be located between the shielding layer 3 and the data line layer 2, the touch layer 4 may also be disposed on the same layer as the shielding layer 3, and the touch layer 4 may also be located on one side of the shielding layer 3 away from the data line layer 2.

The orthographic projection of the signal wiring 21 on the substrate base plate 1 is located in the orthographic projection of the touch layer 4 and the shielding layer 3 on the substrate base plate 1, so that the touch layer 4 and the shielding layer 3 can shield the signal wiring 21 together, the shielding effect is improved, and the generation of a bottom silver edge is further avoided.

The touch layer 4 can be made of a material with a low reflectivity so as to be matched with the shielding layer 3, and the signal trace 21 can be better shielded by matching the touch layer and the shielding layer. The material of the touch layer 4 and the material of the shielding layer 3 may be the same or different, and is not limited herein.

The application provides a display substrate sets up shielding layer 3 and touch-control layer 4 through keeping away from one side of data line layer 2 at substrate base plate 1 to the orthographic projection of signal routing 21 on substrate base plate 1 and touch-control layer 4 and the orthographic projection of shielding layer 3 on substrate base plate at least partly coincide, make shielding layer 3 and touch-control layer 4 shelter from signal routing 21 together, avoid the signal to walk the reflection of light of line 21, and then avoid the production of bottom silver limit, promote visual effect.

In some embodiments, referring to fig. 10, the touch layer 4 includes touch electrodes (i.e., the mesh structure in fig. 10) and touch traces (i.e., lines connected to the mesh structure in fig. 10), and an area where the touch electrodes located in the non-display area are located overlaps an area where the shielding layer 3 is located. Specifically, the touch electrode overlaps with the area where the shielding layer 3 is located, including 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 trace are located, so that the shielding layer 3 can shield the area where the touch electrode is located, and further the shielding layer 3 can shield gaps in the area where the touch electrode is located, and the signal trace 21 is prevented from being exposed from the gaps, and further light reflection is caused.

In some embodiments, the shielding layer 3 is disposed on the same layer as the touch electrode,

specifically, the shielding layer 3 and the touch electrode are disposed on 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 the shielding layer 3 and the touch electrode are the same. The shielding layer 3 and the touch electrode are arranged on the same layer, so that the preparation process can be simplified.

In some embodiments, the touch layer 4 includes touch electrodes and touch traces, and an orthogonal projection of the touch electrodes in the non-display area on the substrate 1 is not coincident with an orthogonal projection of the shielding layer 3 on the substrate 1.

Specifically, the orthographic projection of the shielding layer 3 on the substrate base plate 1 is not overlapped with the orthographic projection of the touch electrode located in the non-display area on the substrate base plate 1, that is, the shielding layer 3 is not in contact with the touch electrode, and a gap is formed between the shielding layer 3 and the touch electrode, so that short circuit caused by contact between the shielding layer 3 and the touch electrode can be avoided.

In some embodiments, the touch electrode is a mesh structure in the non-display area, and an orthogonal projection of the touch electrode of the mesh structure on the substrate base plate 1 is not coincident with an orthogonal projection of the shielding layer 3 on the substrate base plate 1.

Specifically, the orthographic projection of the touch electrode of the mesh structure on the substrate base plate 1 is not overlapped with the orthographic projection of the shielding layer 3 on the substrate base plate 1, that is, the shielding layer 3 is not in contact with the touch electrode of the mesh structure, and a gap is formed between the shielding layer 3 and the touch electrode, so that short circuit caused by contact between the shielding layer 3 and the touch electrode can be avoided.

The mesh shape of the touch electrode 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 and the like.

In some embodiments, referring to fig. 3 and 5, the shielding layer 3 includes a plurality of shielding units 31, the shielding units 31 are disposed in the mesh of the mesh structure, and a touch gap is formed between an orthographic projection of the shielding unit 31 on the substrate base and an orthographic projection of the touch electrode on the substrate base.

Specifically, the shielding layer 3 includes a plurality of shielding units 31, and the plurality of shielding units 31 are independently disposed without contacting each other.

The touch electrode is of a net structure in the non-display area, and the shielding unit 31 is arranged in each grid of the net structure. By arranging the shielding units 31 in each grid, the shielding units 31 and the latticed touch electrodes shield the signal traces 21 together, so that the signal traces 21 are prevented from being exposed from gaps in the grids, and light reflection is generated. 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 diamond, the shielding unit 31 is also a diamond. The shape of the shielding unit 31 is adapted to the shape of the grid, so that the gap between the shielding unit 31 and the touch electrode can be reduced as much as possible to increase the shielding area.

A touch gap is formed between the shielding unit 31 and the touch electrode, so that the shielding unit 31 is prevented from contacting the touch electrode, and the touch electrode is prevented from being short-circuited. The touch gap is as small as possible, and on the premise of ensuring that the shielding unit 31 is not in contact with the touch electrode, the distance of the touch gap is reduced as much as possible, so that most of the signal traces 21 can be shielded by the shielding unit 31 and the latticed touch electrode, and further, a very small portion of the signal traces 21 exposed in the touch gap does not generate obvious reflection.

The minimum distance between each edge of the orthographic projection of the shielding unit 31 on the substrate and the orthographic projection of the touch electrode on the substrate is the same, so that the gaps between each edge of the shielding unit 31 and the touch electrode are basically the same, and the shielding of the signal routing 21 is facilitated. It should be noted that the minimum distance is the same in the present application, which means that the deviation between each edge of the orthographic projection of the shielding unit 31 on the substrate and the orthographic projection of the touch electrode on the substrate is within plus or minus 2 μm,

further, the distance of the touch control gap is 1-6 μm, and further, the distance of the touch control gap is 2-4 μm. The distance of the touch control gap is 1-6 μm, so that the shielding unit 31 is not contacted with the touch control electrode, and the short circuit caused by the contact between the shielding unit 31 and the touch control electrode is avoided, so that the touch control failure is avoided; and 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 trace 21 with a large area, and the generation of silver light at the bottom is avoided. When the distance of the touch gap is less than 1 μm, on one hand, the requirement on the manufacturing process is too severe, which is not favorable for actual manufacturing, and the shielding unit 31 may be likely 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 exposed area of the signal trace 21 is large, and a bottom silver edge may occur.

Referring to fig. 6 and 7, fig. 6 is a schematic view of the grid-shaped touch electrode without the shielding unit 31, and fig. 7 is a schematic view of the grid-shaped touch electrode with the shielding unit 31. As shown in fig. 6, the shielding unit 31 is not disposed in the grid, only the latticed touch electrode can shield the signal trace 21, and the gap portion in the grid cannot shield the signal trace 21, so that the signal trace 21 is exposed from the gap portion in the grid, and light reflection is generated. Referring to fig. 7, the shielding unit 31 is disposed in the grid, so that the shielding unit 31 and the grid-shaped touch electrode shield the signal trace 21 together, most of the signal trace 21 is shielded, and the generation of the silver edge at the bottom is avoided.

In some embodiments, the touch electrodes include 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 disposed on the same layer as the first touch layer 41 and/or the second touch layer 42.

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 mesh-structured touch electrode, 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.

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 hole penetrating through the interlayer dielectric layer 43. The first touch electrode may be a driving (Tx) electrode, and the second touch electrode may be a sensing (Rx) electrode. Alternatively, the first touch electrode may be a sensing (Rx) electrode, and the second touch electrode may be a driving (Tx) electrode. The first touch electrode and the second touch electrode can be in the form of metal grids, the metal grids are formed by interweaving a plurality of metal wires, each metal grid comprises a plurality of grid patterns, and each grid pattern is a polygon formed by the plurality of metal wires. The first touch electrode and the second touch electrode in the metal grid form have the advantages of small resistance, small thickness and high response speed.

The first touch layer 41 and the second touch layer 42 are connected through via holes by an interlayer dielectric layer 43, the interlayer dielectric layer 43 may be an insulating material layer, and the insulating material may be silicon oxide (SiO) _x ) Silicon nitride (SiN) _x ) And silicon oxynitride (SiON), the interlayer dielectric layer 43 may be a single layer, a multilayer, or a composite layer.

In some embodiments, the shielding layer 3 is disposed on the same layer as the first touch layer 41 and/or the second touch layer 42, that is, the shielding layer 3 may be disposed on the same layer as the first touch layer 41 or the second touch layer 42, or the shielding layer 3 may be disposed on the same layer as the first touch layer 41 and the second touch layer 42. The shielding layer 3 is disposed on the same layer as the first touch layer 41 and/or the second touch layer 42, so that the shielding unit 31 can be flexibly disposed in the first touch layer 41 and/or the second touch layer 42 according to actual needs, and the manufacturing process is facilitated.

In some embodiments, referring to fig. 3, the shielding layer 3 is disposed on the same layer as the first touch layer 41, and the shielding unit 31 is disposed in the grid of the first touch layer 41.

In some embodiments, referring to fig. 4, the shielding layer 3 is disposed on the same layer as the first touch layer 41 and the second touch layer 42, and the shielding unit 31 is disposed in the grids of the first touch layer 41 and the second touch layer 42.

In some embodiments, the shielding unit 31 is a solid block structure. The shielding unit 31 with a solid block structure can shield the signal trace 21 in a large area, so that the generation of silver light at the bottom is avoided.

In some embodiments, the shielding unit 31 is made of a material with a small reflectivity. Specifically, the reflectivity of the shielding unit 31 may be less than or equal to 30%. Specifically, the reflectivity of the shielding unit 31 is low, so that the shielding unit 31 can shield the signal trace 21, and prevent the signal trace 21 from reflecting light, and meanwhile, the light shielding unit 31 itself does not reflect light, and further prevents the bottom silver edge from appearing. In this embodiment, the shielding unit 31 and the touch layer 4 are made of a titanium/aluminum/titanium three-layer composite metal material.

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, so that the shielding unit 31 can ensure a smaller reflectivity, and the signal trace 21 can be better shielded by the shielding unit 31.

In some embodiments, referring to fig. 8 and 9, the display substrate further includes: the light shielding layer 8 is located on one side of the substrate base plate 1, the non-display area is arranged around the display area, a light shielding gap 9 is formed between the light shielding layer 8 and the display area, and the orthographic projection of the light shielding gap 9 on the substrate base plate 1 is at least partially overlapped with the orthographic projection of the shielding layer 3 on the substrate base plate 1.

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

And a shading gap 9 is formed between the shading layer 8 and the display area, so that ink is prevented from invading the display area. The orthographic projection of the shading gap 9 on the substrate base plate 1 is at least partially overlapped with the orthographic projection of the shading layer 3 on the substrate base plate 1. Shading gap 9 is shaded through shading layer 3, and signal routing 21 is avoided taking place the reflection of light from shading gap 9, and then avoids the production of bottom silver limit.

In some embodiments, referring to fig. 3, the display substrate further comprises a planarization layer 7, the planarization layer 7 is located between the data line layer 2 and the touch layer 4, and the planarization layer 7 is used for covering the data line layer 2.

In some embodiments, referring to fig. 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 defining layer, an organic light emitting layer (not shown in the drawing), and a cathode 62. The anode electrode 61 is disposed on the planarization layer 7, the pixel defining layer is disposed on the anode electrode 61 and the planarization layer 7, and the pixel opening is disposed on the pixel defining layer, the pixel opening exposing the anode electrode. The organic light emitting layer is at least partially disposed in the pixel opening, the organic light emitting layer is connected to the anode 61, the cathode 62 is disposed on the organic light emitting layer, and the cathode 62 is connected to the organic light emitting layer.

In some embodiments, the organic light Emitting Layer in the light Emitting structure Layer 6 may include one or more 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). The light emission characteristics of the organic material are used to emit light in accordance with a desired gray scale by driving the anode 61 and cathode 62 with a voltage.

In some embodiments, the light emitting layers of the different color OLED light emitting elements 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 process difficulty and improve the yield, a common layer can be used for the hole injection layer and the hole transport layer on one side of the light-emitting layer, and a common layer can be used for the electron injection layer and the electron transport layer on the other side of the light-emitting layer.

In some embodiments, the hole injection layer, the hole transport layer, the electron injection layer, and the electron transport layer may be fabricated by the same process (evaporation process or inkjet printing process), and the isolation may be achieved by a surface step difference of the formed film layer or by surface treatment. For example, the organic light emitting layer may be formed by evaporation using a Fine Metal Mask (FMM) or an Open Mask (Open Mask), or by using an inkjet process, and the isolation of any one or more of the hole injection layer, the hole transport layer, the electron injection layer, and the electron transport layer corresponding to the adjacent sub-pixels may be achieved by a surface step difference of the formed film layer or by surface treatment.

In some embodiments, referring to fig. 3, the display substrate further includes a second encapsulation layer 5, and the second encapsulation layer 5 is located between the touch layer 4 and the light emitting structure layer 6. The second packaging layer 5 can include a first packaging layer, a second packaging layer and a third packaging layer which are stacked, the first packaging layer and the third packaging layer can be made of inorganic materials, the second packaging layer can be made of organic materials, and the second packaging layer is arranged between the first packaging layer and the third packaging layer and can ensure that external water vapor cannot enter the light-emitting structure layer 6.

Based on the same inventive concept, a second aspect of the present application provides a display panel, which includes the display substrate described in any one of the above. The display panel has the technical effects described in any of the above embodiments, and details are not described herein.

Based on the same inventive concept, a third aspect of the present application provides a display device including the above display panel. The display device has the technical effects described in any of the above embodiments, and details are not described herein.

The display device may be a product having an image display function, and may be, for example: displays, televisions, billboards, digital photo frames, laser printers with display function, telephones, mobile phones, personal Digital Assistants (PDAs), digital cameras, camcorders, viewfinders, navigators, vehicles, large-area walls, home appliances, information inquiry apparatuses (e.g., business inquiry apparatuses, monitors, etc. in the departments of e-government, banking, hospitals, electric power, etc.).

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

It should be noted that the above describes some embodiments of the disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the concept of the present disclosure, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of brevity.

The disclosed embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made within the spirit and principles of the embodiments of the disclosure are intended to be included within the scope of the disclosure.

Claims (14)

1. A display substrate, comprising:

the substrate comprises a display area and a non-display area surrounding the display area;

the data line layer is positioned on one side of the substrate and comprises signal routing;

the shielding layer is positioned on one side of the substrate base plate, which is far away from the data line layer, and is positioned in the non-display area;

the touch layer is positioned on one side, away from the data line layer, of the substrate base plate, and the orthographic projection of the signal routing on the substrate base plate is at least partially overlapped with the orthographic projection of the touch layer and the orthographic projection of the shielding layer on the substrate base plate.

2. The display substrate according to claim 1, wherein the touch layer comprises touch electrodes and touch traces, and an orthogonal projection of the touch electrodes on the substrate in the non-display area is not coincident with an orthogonal projection of the shielding layer on the substrate.

3. The display substrate according to claim 2, wherein the touch electrode is a mesh structure in the non-display area, and an orthogonal projection of the touch electrode of the mesh structure on the substrate does not coincide with an orthogonal projection of the shielding layer on the substrate.

4. The display substrate according to claim 3, wherein the shielding layer and the touch electrode are disposed on the same layer.

5. The display substrate according to claim 3, wherein the shielding layer comprises a plurality of shielding units, the shielding units are disposed in the mesh of the mesh structure, and a touch gap is formed between an orthographic projection of the shielding units on the substrate and an orthographic projection of the touch electrodes on the substrate.

6. The display substrate according to claim 3, wherein the touch layer comprises 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, and the shielding layer is disposed on the same layer as the first touch layer and/or the second touch layer.

7. The display substrate of claim 4, wherein the shielding unit is a solid block structure.

8. The display substrate of claim 4, wherein the shape of the shielding unit is adapted to the shape of the grid.

9. The display substrate according to claim 4, wherein the minimum distance between each edge of the orthographic projection of the shielding unit on the substrate and the orthographic projection of the touch electrode on the substrate is the same, and the distance of the touch gap is 1-6 μm.

10. The display substrate of claim 1, further comprising:

the light shielding layer is positioned on one side of the substrate, is arranged around the display area in the non-display area, has a light shielding gap between the light shielding layer and the display area, and at least partially coincides with the orthographic projection of the light shielding gap on the substrate and the orthographic projection of the shielding layer on the substrate.

11. The display substrate of claim 10, wherein the light-shielding layer is an ink layer.

12. The display substrate of claim 1, wherein the non-display area comprises a fan-out area, and the signal traces of the data line layer are located in the fan-out area.

13. A display panel comprising the display substrate according to any one of claims 1 to 12.

14. A display device characterized by comprising the display panel according to claim 13.

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