A display substrate and a display device

Abstract

The present application discloses a display substrate and a display device for reducing parasitic capacitance and improving touch sensitivity. An embodiment of the present application provides a display substrate, comprising: a base substrate, a pixel definition layer located on one side of the base substrate, a cathode located on the side of the pixel definition layer facing away from the base substrate, and a touch conductive layer located on the side of the cathode facing away from the pixel definition layer; the pixel definition layer comprises a plurality of light-emitting opening regions and a plurality of first recesses; the first recesses are located in an area outside the light-emitting opening regions; the cathode covers the light-emitting opening regions and is integrally connected to cover the first recess outside the light-emitting opening regions; the distance between the cathode covering the first recess region and the touch conductive layer is greater than the distance between the cathode and the touch conductive layer in an area outside the first recess and the light-emitting opening regions.

Description

Technical Field

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

[0002] Organic electroluminescent (OLED) devices, which emit light through their organic layers, do not require a backlight and do not exploit the optical properties of liquid crystals. As a result, they offer faster response times, wider viewing angles, higher contrast, lighter weight, lower power consumption, and the ability to be manufactured using flexible substrates. They are considered the most promising flat-panel display devices.

[0003] In the prior art, touch-enabled display products require a touch module installed on a traditional OLED panel. Furthermore, multiple sub-pixels in an OLED panel typically share a common cathode, meaning the cathode is located across the entire panel surface. Because the touch electrodes in the touch module are very close to the OLED cathode, parasitic capacitance forms between them, affecting touch sensitivity. Summary of the Invention

[0004] Embodiments of the present application provide a display substrate and a display device for reducing parasitic capacitance and improving touch sensitivity.

[0005] An embodiment of the present application provides a display substrate, comprising: a base substrate, a pixel definition layer located on one side of the base substrate, a cathode located on a side of the pixel definition layer facing away from the base substrate, and a touch conductive layer located on a side of the cathode facing away from the pixel definition layer;

[0006] The pixel definition layer includes a plurality of light-emitting opening areas and a plurality of first recesses; the first recesses are located in an area outside the light-emitting opening areas;

[0007] The cathode covers the light-emitting opening area and is integrally connected to and covers the first recess outside the light-emitting opening area;

[0008] The distance between the cathode covering the first recessed area and the touch conductive layer is greater than the distance between the cathode and the touch conductive layer in the area outside the first recessed area and the light emitting opening area.

[0009] In some embodiments, the distance between the cathode covering the first recessed area and the touch conductive layer is greater than the distance between the cathode located at the bottom of the light-emitting opening area and the touch conductive layer.

[0010] In some embodiments, an orthographic projection of the first recess on the base substrate overlaps with an orthographic projection of the touch conductive layer on the base substrate.

[0011] In some embodiments, the touch conductive layer includes a first touch conductive layer and a second touch conductive layer located on a side of the first touch conductive layer facing away from the base substrate;

[0012] An orthographic projection of the first recess on the base substrate overlaps with an orthographic projection of the first touch conductive layer on the base substrate.

[0013] In some embodiments, the first recess penetrates the pixel definition layer.

[0014] In some embodiments, a depth of the first recess is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

[0015] In some embodiments, the display substrate further comprises: an insulating film layer located between the base substrate and the pixel definition layer;

[0016] The insulating film layer has a plurality of second recesses; the orthographic projections of the second recesses on the base substrate are located within the orthographic projections of the first recesses on the base substrate.

[0017] In some embodiments, the second recess corresponds one-to-one with the first recess.

[0018] In some embodiments, the insulating film layer includes a first planarization layer, and the second recess penetrates the first planarization layer.

[0019] In some embodiments, the display substrate further includes a common layer located between the pixel definition layer and the cathode; the common layer covers the first recess and the second recess.

[0020] In some embodiments, the display substrate further includes a first conductive layer located between the base substrate and the first planarization layer;

[0021] The second recess exposes a portion of the first conductive layer, and the common layer covers the first conductive layer exposed by the second recess.

[0022] In some embodiments, the display substrate further comprises: an anode located between the planarization layer and the cathode in the light emitting opening region, and an organic light emitting layer located between the anode and the cathode;

[0023] The common layer includes: a first common layer located between the anode and the organic light-emitting layer and / or a second common layer located between the organic light-emitting layer and the cathode.

[0024] In some embodiments, the total depth of the first recess and the second recess is greater than or equal to 2 micrometers and less than or equal to 4 micrometers.

[0025] An embodiment of the present application provides a display device, which includes the display substrate provided by the embodiment of the present application.

[0026] In the display substrate and display device provided by the embodiments of the present application, the pixel definition layer has multiple first recesses, and the integrally connected cathode covers the first recesses. This allows the distance between the cathode covering the first recesses and the touch conductive layer to be greater than the distance between the cathode and the touch conductive layer in areas outside the first recesses and the light-emitting opening. In other words, by forming the first recesses in the pixel definition layer, the present application increases the distance between the cathode and the touch conductive layer in some areas, thereby reducing the parasitic capacitance between the cathode and the touch conductive layer in some areas, thereby improving touch sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A schematic structural diagram of a display substrate is provided for an embodiment of the present application;

[0029] Figure 2 A schematic diagram of another display substrate structure is provided for an embodiment of the present application;

[0030] Figure 3 A structural schematic diagram of another display substrate is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. And in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Unless otherwise defined, the technical or scientific terms used in this application should have the usual meaning understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar terms used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0033] It should be noted that the sizes and shapes of the figures in the accompanying drawings do not reflect the actual scale and are only for the purpose of illustrating the contents of this application. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0034] The embodiment of the present application provides a display substrate, such as Figure 1 As shown, the display substrate includes: a base substrate 1, a pixel definition layer 2 located on one side of the base substrate 1, a cathode 3 located on the side of the pixel definition layer 2 facing away from the base substrate 1, and a touch conductive layer 4 located on the side of the cathode 3 facing away from the pixel definition layer 2;

[0035] The pixel definition layer 2 includes a plurality of light-emitting opening regions 5 and a plurality of first recesses 6 ; the first recesses 6 are located in an area outside the light-emitting opening regions 5 ;

[0036] The cathode 3 covers the light-emitting opening area 5, and the cathode 3 is integrally connected to cover the first recess 6 outside the light-emitting opening area 5;

[0037] The distance h1 between the cathode 3 and the touch conductive layer 4 covering the first recess 6 is greater than the distance h2 between the cathode 3 and the touch conductive layer 4 outside the first recess 6 and the light-emitting opening area 5 .

[0038] In the display substrate provided by the embodiments of the present application, the pixel definition layer includes multiple first recesses, and the integrally connected cathode covers the first recesses. This allows the distance between the cathode covering the first recesses and the touch conductive layer to be greater than the distance between the cathode and the touch conductive layer in areas outside the first recesses and the light-emitting opening. In other words, by forming the first recesses in the pixel definition layer, the present application increases the distance between the cathode and the touch conductive layer in some areas, thereby reducing the parasitic capacitance between the cathode and the touch conductive layer in some areas, thereby improving touch sensitivity.

[0039] In a specific implementation, the first recess is located between adjacent light-emitting opening areas.

[0040] In some embodiments, as Figure 1As shown, the display substrate further includes: a first planarization layer 10 located between the base substrate 1 and the pixel definition layer 2; an anode 7 located between the first planarization layer 10 and the pixel definition layer 3; and a light-emitting functional layer 8 located between the anode 7 and the cathode 3. In a specific implementation, the anode 7 and the light-emitting functional layer 8 are both located in the light-emitting opening region 5. The anode 7, the light-emitting functional layer 8, and the cathode 3 in the light-emitting opening region 5 constitute a light-emitting device.

[0041] In a specific implementation, the light-emitting device is, for example, an organic light-emitting diode device or a quantum dot light-emitting diode device.

[0042] In some embodiments, as Figure 1 As shown, the display substrate also includes: a driving circuit layer located between the first planarization layer 10 and the base substrate 1; the driving circuit layer includes a plurality of pixel driving circuits 9 arranged in an array; the pixel driving circuit 9 includes a thin film transistor TFT and a storage capacitor C; the pixel driving circuit is used to drive the light-emitting device to emit light.

[0043] In some embodiments, as Figure 1 As shown, the display substrate further includes an encapsulation layer 12 located between the cathode 2 and the conductive touch layer 4, and a first buffer layer 18 located between the conductive touch layer 4 and the encapsulation layer 12. The encapsulation layer 12 includes a first inorganic encapsulation layer 21, an organic encapsulation layer 22, and a second inorganic encapsulation layer 23 stacked in sequence. The conductive touch layer 4 includes a first conductive touch layer 35 and a second conductive touch layer 36 located on the side of the first conductive touch layer 35 facing away from the base substrate 1.

[0044] In specific implementation, the embodiment of the present application adopts flexible multi-layer integrated touch technology (Flexible Multi Layer On Cell, FMLOC) to form a first buffer layer and a touch conductive layer on the packaging layer.

[0045] In some embodiments, as Figure 2As shown, the display substrate includes a display area 31 and a peripheral area 32 surrounding the display area 31. The touch conductive layer 4 includes: a plurality of touch electrodes 13 located in the display area 31; and touch signal lines 33 electrically connected to the touch electrodes 13 and extending from the display area 31 to the peripheral area 32. The touch electrodes 13 include a plurality of touch sensing electrodes RX and a plurality of touch driving electrodes TX that intersect with each other. Each touch sensing electrode RX includes: a plurality of touch sensing sub-electrodes 17 and a connecting portion 16 connecting adjacent touch sensing sub-electrodes 17. Each touch driving electrode TX includes: a plurality of touch driving sub-electrodes 14 and a bridging electrode 15 connecting adjacent touch driving sub-electrodes 14. In a specific implementation, the touch sensing sub-electrodes 17 and the connecting portion 16 are integrally connected, and the touch sensing sub-electrodes 17, the connecting portion 16, and the touch driving sub-electrodes 14 are disposed in the same layer, while the bridging electrode 15, the touch sensing sub-electrodes 17, the connecting portion 16, and the touch driving sub-electrodes 14 are disposed in a different layer. For example, the second touch conductive layer 36 includes touch sensing sub-electrodes 17 , connecting portions 16 and touch driving sub-electrodes 14 , and the first touch conductive layer 35 includes bridge electrodes 15 .

[0046] It should be noted that Figure 2 In the embodiment, the touch sensing sub-electrodes and the touch driving sub-electrodes are diamond-shaped block electrodes. In a specific implementation, the touch sensing electrodes and the touch driving electrodes may be, for example, grid-shaped electrodes.

[0047] In some embodiments, as Figure 1 As shown, the display substrate further includes a first insulating layer 19 located between the first touch conductive layer 35 and the second touch conductive layer 36, and a second insulating layer 20 located on the side of the second touch conductive layer 36 facing away from the first touch conductive layer 35. The touch sensing sub-electrodes 14 are electrically connected to the bridging electrodes 15 through vias penetrating the first insulating layer 19.

[0048] In some embodiments, Figure 2 In the embodiment, the touch sensing electrodes RX extend along a first direction X, and the touch driving electrodes TX extend along a second direction Y. The first direction X intersects the second direction Y. For example, the first direction X is perpendicular to the second direction Y. Of course, in a specific implementation, the positions of the touch sensing electrodes RX and the touch driving electrodes TX can be interchanged.

[0049] In specific implementation, Figure 2 As shown, both the touch sensing electrodes RX and the touch driving electrodes TX need to be electrically connected to the touch signal lines 33. The touch signal lines can provide driving signals to the corresponding touch electrodes or receive sensing signals from the corresponding touch electrodes. Specifically, the touch signal lines electrically connected to the touch sensing electrodes RX receive sensing signals from the corresponding touch sensing electrodes RX, while the touch signal lines electrically connected to the touch driving electrodes TX provide driving signals to the corresponding touch driving electrodes TX.

[0050] In specific implementation, Figure 2 As shown, in the peripheral area 32 , the display substrate further includes a binding terminal 34 electrically connected to the touch signal line 33 .

[0051] In a specific implementation, the binding terminal can be bound to a driving unit such as a flexible circuit board, so that the driving unit such as the flexible circuit board can provide a driving signal and receive a sensing signal.

[0052] In some embodiments, as Figure 1 As shown, the distance h1 between the cathode 3 covering the first recess 6 and the touch conductive layer 4 is greater than the distance h3 between the cathode 3 located at the bottom of the light-emitting opening area 5 and the touch conductive layer 4 .

[0053] In some embodiments, as Figure 1 As shown, the orthographic projection of the first recess 6 on the base substrate 1 overlaps with the orthographic projection of the touch conductive layer 4 on the base substrate 1 .

[0054] In the display substrate provided in the embodiment of the present application, the orthographic projection of the first recess on the base substrate overlaps with the orthographic projection of the touch conductive layer on the base substrate, thereby increasing the distance between the cathode in some areas and the touch conductive layer, thereby reducing the parasitic capacitance between the cathode in some areas and the touch conductive layer, and improving the touch sensitivity.

[0055] In some embodiments, as Figure 1 As shown, the orthographic projection of the first recess 6 on the base substrate 1 overlaps with the orthographic projection of the first touch conductive layer 35 on the base substrate 1 , that is, the orthographic projection of the first recess 6 on the base substrate 1 overlaps with the orthographic projection of the bridge electrode 15 on the base substrate 1 .

[0056] It should be noted that the distance between the first touch conductive layer and the cathode is closer than the distance between the second touch conductive layer and the cathode, so parasitic capacitance is more likely to form between the first touch conductive layer and the cathode. The orthographic projection of the first recess on the base substrate overlaps with the orthographic projection of the first touch conductive layer on the base substrate, thereby reducing the parasitic capacitance between the cathode and the first touch conductive layer in some areas and improving touch sensitivity.

[0057] In specific implementations, the number and location of the first recesses can be set based on the number and location of the bridging electrodes in the first touch conductive layer. For example, in areas outside the light-emitting opening region, a first recess can be configured to correspond one-to-one with the bridging electrodes in the area outside the light-emitting opening region. Multiple first recesses can be provided in the region between adjacent light-emitting opening regions. Of course, to simplify display substrate fabrication, only one first recess can be provided between adjacent light-emitting opening regions.

[0058] In some embodiments, the first recess is a groove formed by patterning the pixel definition layer. Specifically, in a specific implementation, the pixel definition layer can be patterned to form a recess in the region between the light-emitting openings. Of course, in a specific implementation, the film layer below the pixel definition layer can also have a recess in the region between the light-emitting openings, so that the pixel definition layer forms the first recess in the recessed region.

[0059] In some embodiments, a depth of the first recess is less than a thickness of the pixel definition layer.

[0060] Alternatively, in some embodiments, Figure 1 As shown, the first recess 6 penetrates the pixel definition layer 2. That is, the first recess is a groove that extends through the thickness of the pixel definition layer. This further increases the distance between the cathode in the first recessed area and the touch conductive layer, reducing the parasitic capacitance between the cathode in some areas and the first touch conductive layer, thereby improving touch sensitivity.

[0061] In a specific implementation, when the first recess penetrates the pixel definition layer, the distance between the edge of the bottom of the first recess and the anode is greater than 0. This ensures that the edge of the anode is covered by the pixel definition layer, avoiding a short circuit between the anode and the cathode in the first recess.

[0062] In some embodiments, when the first recess penetrates the pixel definition layer, a depth of the first recess is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

[0063] In some embodiments, as Figure 3 As shown, the display substrate further includes: an insulating film layer 42 located between the base substrate 1 and the pixel definition layer 2; the insulating film layer 42 has a plurality of second recesses 37; the orthographic projection of the second recess 37 on the base substrate 1 is located within the orthographic projection of the first recess 6 on the base substrate 1.

[0064] In the display substrate provided in the embodiment of the present application, the insulating film layer has a second recess, and the orthographic projection of the second recess on the base substrate is located within the orthographic projection of the first recess on the base substrate, so that the cathode covers the first recess and the second recess, which can further increase the distance between the cathode in the area of the first recess and the second recess and the touch conductive layer, reduce the parasitic capacitance between the cathode in some areas and the first touch conductive layer, and improve touch sensitivity.

[0065] In some embodiments, the second recess corresponds one-to-one with the first recess.

[0066] In some embodiments, the second recess is a groove formed on the insulating film layer.

[0067] In some embodiments, as Figure 3 As shown, the insulating film layer 42 includes a first planarization layer 10 ; that is, the first planarization layer 10 has a plurality of second recesses 37 .

[0068] In some embodiments, a depth of the second recess is less than a thickness of the first planarization layer.

[0069] Alternatively, in some embodiments, the second recess extends through the first planarization layer. That is, the first planarization layer can be patterned to form a groove extending through its thickness, serving as the second recess. This can further increase the distance between the cathodes in the first and second recesses and the touch conductive layer, reducing parasitic capacitance between the cathodes in some areas and the first touch conductive layer, thereby improving touch sensitivity.

[0070] In some embodiments, when the second recess penetrates the planarization layer, a total depth of the first recess and the second recess is greater than or equal to 2 micrometers and less than or equal to 4 micrometers.

[0071] In some embodiments, as Figure 3 As shown, the display substrate further includes a common layer 38 located between the pixel definition layer 2 and the cathode 3 ; the common layer 38 covers the first recess 6 and the second recess 37 .

[0072] In specific implementation, Figure 3 As shown, the light-emitting functional layer 8 includes a common layer 38 and an organic light-emitting layer 39. In some embodiments, the common layer 38 includes a first common layer 40 located between the anode 7 and the organic light-emitting layer 39 and / or a second common layer 41 located between the organic light-emitting layer 39 and the cathode 3. Figure 3 The common layer 38 includes a first common layer 40 located between the anode 7 and the organic light-emitting layer 39 and a second common layer 41 located between the organic light-emitting layer 39 and the cathode 3 .

[0073] In a specific implementation, the first common layer is, for example, a hole transport layer, and the second common layer is, for example, an electron transport layer. The light-emitting functional layer may further include: a hole injection layer located between the anode and the hole transport layer, and an electron injection layer located between the electron transport layer and the cathode.

[0074] In some embodiments, as Figure 3 As shown, the display substrate further includes a first conductive layer 27 located between the base substrate 1 and the first planarization layer 10;

[0075] The second recess 37 exposes a portion of the first conductive layer 27 , and the common layer 38 covers the first conductive layer 27 exposed by the second recess 37 .

[0076] In the display substrate provided by the embodiment of the present application, the common layer covers the first conductive layer exposed by the second recess, thereby preventing the cathode from contacting the first conductive layer and causing a short circuit.

[0077] In some embodiments, as Figure 3As shown, the first conductive layer 27 includes a source electrode S and a drain electrode D of the thin film transistor TFT, and a first electrode 28 of the storage capacitor C. The second recess 37 exposes the first electrode 28 .

[0078] In some embodiments, as Figure 3 As shown, the thin film transistor TFT further includes: an active layer 29, and a gate electrode G located between the active layer 29 and the first conductive layer 27. The display substrate further includes: a second buffer layer 24 located between the base substrate 1 and the active layer 29; a first gate insulating layer 25 located between the active layer 29 and the gate electrode G; and an interlayer insulating layer 26 located between the first gate insulating layer 25 and the first conductive layer 27. The anode 7 is connected to the drain electrode D via a via hole penetrating the first planarizing layer 10. In a specific implementation, the active layer includes a semiconductor region and a conductive region, and the source electrode S and the drain electrode D are connected to the conductive region of the active layer via via holes penetrating the interlayer insulating layer and the first gate insulating layer.

[0079] In some embodiments, as Figure 3 As shown, the storage capacitor C further includes a second electrode 30 provided in the same layer as the active layer 29. The second electrode is, for example, an electrode formed by conducting a semiconductor material.

[0080] It should be noted that Figure 3 For illustration, the first electrode 28 of the storage capacitor C is provided in the same layer as the source electrode S and the drain electrode D, and the second electrode 30 is provided in the same layer as the active layer 29. Of course, in a specific implementation, one of the first electrode and the second electrode can be provided in the same layer as the gate electrode. Alternatively, an additional conductive layer can be provided to form the first electrode and / or the second electrode.

[0081] It should be noted that Figure 3 The following example illustrates that the first recess 6 and the second recess 37 overlap with the area where the storage capacitor C is located. Of course, in specific implementations, due to different layout designs of the driving circuit layer, the areas where the first recess and the second recess are located may also overlap with other areas outside the storage capacitor.

[0082] It should be noted that Figure 3The example of the insulating film layer including only the first planarization layer and the first conductive layer including the source, the drain, and the first electrode is used for explanation. Of course, in a specific implementation, the insulating film layer may also include other insulating layers between the first planarization layer and the base substrate, such as at least one of an interlayer insulating layer, a first gate insulating layer, and a second buffer layer. As long as the second recess formed in the insulating film layer does not pass through the conductive layer in the driving circuit layer. The first conductive layer may also drive other conductive layers in the circuit layer. If the area of the first recess overlaps with the first conductive layer, and the first conductive layer and the pixel definition layer only include the insulating film layer without other conductive layers, the second recess may pass through all insulating layers between the pixel definition layer and the first conductive layer. For example, when the first conductive layer includes a gate electrode, and when the first conductive layer that overlaps with the first recess includes only the insulating film layer and the pixel definition layer without other conductive layers, the insulating film layer including the second recess may include: the first planarization layer and the first gate insulating layer.

[0083] In some embodiments, the substrate is, for example, a flexible substrate. The second buffer layer comprises, for example, an inorganic material. The material of the second buffer layer may be silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiO x N y The material of the active layer includes, for example, P-Si. The material of the gate insulating layer and the interlayer insulating layer may also be, for example, silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiO x N y The materials of the first planarization layer and the pixel definition layer are, for example, organic materials.

[0084] An embodiment of the present application provides a display device, which includes the display substrate provided by the embodiment of the present application.

[0085] The display device provided in the embodiments of this application is any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigation system. Other essential components of the display device are well understood by those skilled in the art and are not described here in detail, nor should they be construed as limitations of this application. The implementation of the display device can be referenced to the above-described embodiments of the display substrate, and any repetitive details will not be repeated.

[0086] In summary, the display substrate and display device provided by the embodiments of the present application feature multiple first recesses in the pixel definition layer, and the integrally connected cathodes covering the first recesses. This allows the distance between the cathodes covering the first recesses and the touch conductive layer to be greater than the distance between the cathodes and the touch conductive layer in areas outside the first recesses and the light-emitting openings. In other words, by forming the first recesses in the pixel definition layer, the present application increases the distance between the cathodes and the touch conductive layer in some areas, thereby reducing the parasitic capacitance between the cathodes and the touch conductive layer in some areas, thereby improving touch sensitivity.

[0087] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0088] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A display substrate, characterized in that: The display substrate includes: a base substrate, a pixel definition layer located on one side of the base substrate, a cathode located on a side of the pixel definition layer facing away from the base substrate, a touch conductive layer located on a side of the cathode facing away from the pixel definition layer, an insulating film layer located between the base substrate and the pixel definition layer, and a common layer located between the pixel definition layer and the cathode; The pixel definition layer includes a plurality of light-emitting opening areas and a plurality of first recesses; the first recesses are located in an area outside the light-emitting opening areas; The cathode covers the light-emitting opening area, and is integrally connected to cover the first recess outside the light-emitting opening area; The distance between the cathode covering the first recessed area and the touch conductive layer is greater than the distance between the cathode and the touch conductive layer in an area outside the first recessed area and the light-emitting opening area; The insulating film layer has a plurality of second recesses; the orthographic projections of the second recesses on the base substrate are located within the orthographic projections of the first recesses on the base substrate; The common layer covers the first recess and the second recess.

2. The display substrate according to claim 1, wherein: The distance between the cathode covering the first recessed area and the touch conductive layer is greater than the distance between the cathode located at the bottom of the light-emitting opening area and the touch conductive layer.

3. The display substrate according to claim 1 or 2, wherein: An orthographic projection of the first recess on the base substrate overlaps with an orthographic projection of the touch conductive layer on the base substrate.

4. The display substrate according to claim 3, wherein: The touch conductive layer includes a first touch conductive layer and a second touch conductive layer located on a side of the first touch conductive layer facing away from the base substrate; An orthographic projection of the first recess on the base substrate overlaps with an orthographic projection of the first touch conductive layer on the base substrate.

5. The display substrate according to claim 1 or 2, characterized in that: The first recess penetrates the pixel definition layer.

6. The display substrate according to claim 5, wherein: The depth of the first recess is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

7. The display substrate according to claim 1, wherein: The second recess corresponds to the first recess one by one.

8. The display substrate according to claim 1, wherein: The insulating film layer includes a first planarization layer, and the second recess penetrates the first planarization layer.

9. The display substrate according to claim 8, wherein: The display substrate further includes a first conductive layer located between the base substrate and the first planarization layer; The second recess exposes a portion of the first conductive layer, and the common layer covers the first conductive layer exposed by the second recess.

10. The display substrate according to claim 9, wherein: The display substrate further includes: an anode located between the first planarization layer and the cathode in the light-emitting opening area, and an organic light-emitting layer located between the anode and the cathode; The common layer includes: a first common layer located between the anode and the organic light-emitting layer and / or a second common layer located between the organic light-emitting layer and the cathode.

11. The display substrate according to claim 7, wherein: The total depth of the first recess and the second recess is greater than or equal to 2 micrometers and less than or equal to 4 micrometers.

12. A display device, characterized in that: The display device includes the display substrate according to any one of claims 1 to 11.

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