Display substrate, display panel and display device

Abstract

A display substrate, a display panel and a display device, wherein the display substrate comprises a base substrate (100), the base substrate (100) comprising a display area (AA) and a non-display area (BB) located on one side of the display area (AA); a packaging dam (106) located in the non-display area (BB) and arranged around the display area (AA); an organic insulating layer (101) having a groove structure (C) on a side of the packaging dam (106) away from the display area (AA); a touch structure located on a side of the organic insulating layer (101) away from the base substrate (100), comprising a plurality of touch lines (102) extending to the non-display area (BB); and an inorganic insulating layer (105) having a hollow structure (H) on a side of the packaging dam (106) away from the display area (AA), the hollow structure (H) covering the groove structure (C) and not overlapping with the orthographic projections of the plurality of touch lines (102).

Description

Technical Field

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

[0002] An organic light-emitting diode (OLED) display device is a display screen based on organic light-emitting diodes. It has excellent characteristics such as self-luminescence, high contrast ratio, thin thickness, wide viewing angle, fast response speed, can be used for flexible panels, wide operating temperature range, and relatively simple structure and manufacturing process, and has received more and more attention and has broad application prospects. Generally, the touch function can be integrated by embedding a touch structure in the OLED display module to achieve the integration of the display function and the touch function of the OLED display device. Summary of the Invention

[0003] On the one hand, an embodiment of the present disclosure provides a display substrate, including:

[0004] A substrate, the substrate includes a display area and a non-display area located on one side of the display area;

[0005] A packaging dam, located in the non-display area and disposed around the display area;

[0006] An organic insulating layer, located on the substrate; the organic insulating layer has a groove structure, and the groove structure is located on a side of the packaging dam away from the display area;

[0007] A touch structure, located on a side of the organic insulating layer away from the substrate; the touch structure includes a plurality of touch lines extending to the non-display area;

[0008] An inorganic insulating layer, located on the substrate; the inorganic insulating layer has a hollow structure on a side of the packaging dam away from the display area, the hollow structure covers the groove structure and does not overlap with the orthographic projection of the plurality of touch lines.

[0009] In some embodiments, in the above display substrate provided by the embodiment of the present disclosure, the touch structure further includes: a plurality of touch electrodes and a plurality of bridging portions located in the display area; wherein,

[0010] Each of the touch lines includes: a first branch disposed on the same layer as the plurality of touch electrodes, and a second branch disposed on the same layer as the plurality of bridging portions and electrically connected to the first branch;

[0011] The plurality of touch electrodes are electrically connected to the plurality of touch lines, and each of the bridging portions is correspondingly electrically connected to two of the touch electrodes;

[0012] The inorganic insulating layer is located between the layer where the plurality of touch electrodes are located and the layer where the plurality of bridging portions are located.

[0013] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the plurality of bridging portions are located between the layer where the plurality of touch electrodes are located and the organic insulating layer.

[0014] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, it further includes: at least one floating line located in the non-display area; wherein, the plurality of touch lines can be divided into at least one group of touch lines, and the at least one floating line is located on at least one side of the two side edges of the at least one group of touch lines.

[0015] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the plurality of touch lines can be divided into two groups of touch lines, the at least one floating line is multiple, and the multiple floating lines are respectively located on the two side edges of each group of touch lines.

[0016] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, each group of the touch lines is arranged along a first direction and extends along a second direction, the first direction and the second direction intersect, and the multiple floating lines are respectively located on the two side edges of each group of touch lines in the first direction.

[0017] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the multiple floating lines are disposed on at least one of the layer where the plurality of touch electrodes are located and the layer where the plurality of bridging portions are located.

[0018] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the multiple floating lines include: multiple first floating lines disposed on the same layer as the plurality of touch electrodes, and multiple second floating lines disposed on the same layer as the plurality of bridging portions; wherein,

[0019] In a direction perpendicular to the substrate, some of the first floating lines are correspondingly arranged with the multiple second floating lines, and the remaining first floating lines do not overlap with the multiple second floating lines.

[0020] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the area where some of the first floating lines are located is between the area where the remaining first floating lines are located and the area where the touch lines are located.

[0021] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the number of the remaining first floating lines is greater than the number of some of the first floating lines.

[0022] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the positive projections of the plurality of second floating lines on the substrate substrate completely coincide with the positive projections of the partial first floating lines.

[0023] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the positive projection of the partial first floating lines on the substrate substrate is located within the positive projection of the inorganic insulating layer;

[0024] For at least one of the remaining partial first floating lines, a partial structure of the at least one first floating line overlaps with the hollow structure in the positive projection on the substrate substrate and does not overlap with the groove structure, and another partial structure does not overlap with the hollow structure.

[0025] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, in the first direction, a first pitch between two adjacent floating lines, a second pitch between two adjacent touch lines, and a third pitch between an adjacent floating line and a touch line are the same.

[0026] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the first pitch, the second pitch, and the third pitch are 4 μm - 25 μm.

[0027] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the plurality of floating lines extend from an edge of the plurality of touch lines close to the display area side to be flush with an end of the plurality of touch lines away from the display area side.

[0028] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the number of the plurality of floating lines on both sides of each group of touch lines is the same.

[0029] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the plurality of touch lines include a plurality of touch driving lines and a plurality of touch sensing lines;

[0030] The plurality of touch electrodes include: a plurality of touch driving electrodes arranged in the first direction and a plurality of touch sensing electrodes arranged in the second direction;

[0031] Each touch driving line is electrically connected to a row of touch driving electrodes, and each touch sensing line is electrically connected to a column of touch sensing electrodes.

[0032] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the organic insulating layer includes: a planar layer and a pixel defining layer located on a side of the planar layer away from the substrate substrate.

[0033] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, the flat layer is a single-layer structure or a double-layer structure.

[0034] On the other hand, the embodiments of the present disclosure provide a display panel, including the above-mentioned display substrate provided by the embodiments of the present disclosure.

[0035] On the other hand, the embodiments of the present disclosure provide a display device, including the above-mentioned display panel provided by the embodiments of the present disclosure. Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of a display panel in the related art;

[0037] Figure 2 It is along Figure 1 The cross-sectional structural diagram of line I-II in;

[0038] Figure 3 It is Figure 1 The enlarged structural diagram of the P region in;

[0039] Figure 4 It is along Figure 3 The cross-sectional structural diagram of line III-IV in;

[0040] Figure 5 It is a schematic structural diagram of the display panel provided by the embodiments of the present disclosure;

[0041] Figure 6 It is Figure 5 An enlarged structural diagram of the Q region in;

[0042] Figure 7 It is Figure 6 An enlarged structural diagram of the Z region in;

[0043] Figure 8 It is along Figure 7 The cross-sectional structural diagram of line V-VI in;

[0044] Figure 9 It is Figure 6 Another enlarged structural diagram of the Z region in;

[0045] Figure 10 It is along Figure 9 A cross-sectional structural diagram of line VII-VIII in;

[0046] Figure 11 It is along Figure 9 Another cross-sectional structural diagram of line VII-VIII in;

[0047] Figure 12 It is Figure 5Another enlarged structural schematic diagram of the Q region;

[0048] Figure 13 For along Figure 5 A cross-sectional structural schematic diagram along line IX-XI in

[0049] Figure 14 For along Figure 5 Another cross-sectional structural schematic diagram along line IX-XI in

[0050] Figure 15 For along Figure 12 A cross-sectional structural schematic diagram along line XII-XIII in

[0051] Figure 16 For along Figure 12 A cross-sectional structural schematic diagram along line E-F in Detailed implementation manners

[0052] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. It should be noted that the sizes and shapes of the various figures in the drawings do not reflect the true proportions, and the purpose is only to schematically illustrate the content of the present disclosure. And the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts fall within the scope of protection of the present disclosure.

[0053] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second" and similar terms used in the specification and claims of the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. The terms such as "inside", "outside", "above", "below", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0054] Currently, the more mainstream small-size OLED products on the market are all large-angle bending products with a touch structure (TSP) process internally installed. Such as Figures 1 to 3As shown, in the relevant OLED products with a touch structure internally mounted, the touch structure contacts the encapsulation layer of the OLED display module in the display area and contacts the organic insulating layer 101 provided on the entire surface in the OLED display module in the border area around the display area. The touch structure includes multiple touch lines 102, multiple touch electrodes 103, and multiple bridging parts 104, as well as an inorganic insulating layer 105 provided on the entire surface between the layer where the multiple touch electrodes 103 are located and the layer where the multiple bridging parts 104 are located. In the large-angle bending process, in order to release the bending stress, a groove structure C needs to be provided in the organic insulating layer 101 in the border area. To ensure that there are no crack defects in the product under large-angle bending, the film stress of the inorganic insulating layer 105 included in the touch structure needs to be increased, but the relatively large film stress reduces the adhesion between the inorganic insulating layer 105 and the organic insulating layer 101 at the groove structure C (as Figure 4 shown), resulting in wrinkles or peeling of the inorganic insulating layer 106 in the bending area, and further resulting in disconnection defects of the touch lines 102 and excessive foreign particles (particles) during the process, inducing serious touch insensitivity defects.

[0055] In view of the above problems existing in the related technology, the embodiments of the present disclosure provide a display substrate, as Figure 5 and Figure 6 shown, including:

[0056] A substrate 100, the substrate 100 includes a display area AA and a non-display area BB on one side of the display area AA;

[0057] An encapsulation dam 106, located in the non-display area BB and disposed around the display area AA;

[0058] An organic insulating layer 101, located above the substrate 100; the organic insulating layer 101 has a groove structure C, and the groove structure C is located on the side of the encapsulation dam 106 away from the display area AA;

[0059] A touch structure, located on the side of the organic insulating layer 101 facing away from the substrate 100; the touch structure includes multiple touch lines 102 extending to the non-display area BB;

[0060] An inorganic insulating layer 105, located above the substrate 100; the inorganic insulating layer 105 has a hollow structure H on the side of the encapsulation dam 106 away from the display area AA, and the hollow structure H covers the groove structure C and does not overlap with the orthographic projection of the multiple touch lines 102.

[0061] In the display substrate provided by the embodiments of the present disclosure, by providing a hollow structure H in the inorganic insulating layer 105 that covers the groove structure C included in the organic insulating layer 101, there is no pattern of the inorganic insulating layer 105 in the area where the groove structure C is located, thereby avoiding wrinkles or detachment of the inorganic insulating layer 105 with relatively high stress at the groove structure C; moreover, the hollow structure H does not cover the touch line 102, so that the inorganic insulating layer 105 located at the touch line 102 can maintain good adhesion to the touch line 102. Therefore, the present disclosure effectively improves the product yield and ensures the touch effect.

[0062] In some embodiments, both the length and / or width of the hollow structure H are respectively greater than the length and / or width of the groove structure C. Specifically, when there are multiple groove structures C, in some embodiments, multiple hollow structures H that respectively cover each groove structure C can be provided in the inorganic insulating layer 105. At this time, the length and / or width of each hollow structure H is greater than the length and / or width of the corresponding groove structure C; in other embodiments, a single hollow structure H can also be provided to cover multiple groove structures C. At this time, the length and / or width of each hollow structure H needs to be greater than the sum of the lengths and / or the sum of the widths of the multiple groove structures C.

[0063] In some embodiments, the distance between the hollow structure H and the boundary of the encapsulation dam 106 on the side away from the display area AA is greater than the width of the groove structure C, and / or less than the length of the groove structure C.

[0064] In some embodiments, the ratio of the length to the width of the groove structure C is between about 20:1 and about 200:1. In other embodiments, the ratio of the length to the width of the groove structure C can be about 22:1, about 169:1, or about 185:1. It can be understood that the "about" herein refers to the error within the allowable process and measurement range, and does not strictly limit the boundary, and can vary within a 10% fluctuation up and down.

[0065] In some embodiments, the ratio of the width to the depth of the groove structure C is between about 5:1 and about 20:1. In other embodiments, the ratio of the width to the depth of the groove structure C can be 13.5:1. In some embodiments, the width of the groove structure C is about 55 μm, the depth is about 4 μm, and the length is about 1235 μm, 9300 μm, or 10200 μm. The distance between the hollow structure H and the boundary of the encapsulation dam 106 on the side away from the display area AA (i.e., the shortest distance from the encapsulation dam 106 to the boundary of the inorganic insulating layer 105) is about 165 μm, and the depth is about 0.53 μm. The farthest distance from the encapsulation dam 106 to the boundary of the inorganic insulating layer 105 is about 515 μm.

[0066] In some embodiments, in the display substrate provided by the embodiments of the present disclosure, as Figures 5 to 11As shown, the touch structure may further include: a plurality of touch electrodes 103 and a plurality of bridging portions 104 located in the display area AA; wherein,

[0067] Each touch line 102 includes: a first branch 1021 disposed on the same layer as the plurality of touch electrodes 103, and a second branch 1022 disposed on the same layer as the plurality of bridging portions 104 and electrically connected to the first branch 1021;

[0068] The plurality of touch electrodes 103 are electrically connected to the plurality of touch lines 102, and each bridging portion 104 is correspondingly electrically connected to two touch electrodes 103;

[0069] The inorganic insulating layer 105 is located between the layer where the plurality of touch electrodes 103 are located and the layer where the plurality of bridging portions 104 are located.

[0070] By setting the touch line 102 as a double-layer routing including the first branch 1021 and the second branch 1022, it is possible to load a signal on the touch electrode 103 through the other layer of routing after a partial breakage of one layer of routing, thereby effectively solving the problem that a single-layer routing breakage easily leads to touch failure. In a specific implementation, the first branch 1021 and the second branch 1022 are electrically connected through a via hole penetrating the inorganic insulating layer 105.

[0071] It should be noted that in the present disclosure, the touch structure may not only be the above mutual capacitance structure, but also a self-capacitance structure. And when the touch structure is a self-capacitance structure, the touch structure may include a plurality of self-capacitance electrodes disposed on a different layer from the plurality of touch lines 102, the inorganic insulating layer 105 is located between the layer where the plurality of touch lines 102 are located and the layer where the plurality of self-capacitance electrodes are located, and each touch line 102 is electrically connected to a self-capacitance electrode through a via hole penetrating the inorganic insulating layer 105. The following will take the touch structure as a mutual capacitance structure as an example for description.

[0072] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the plurality of bridging portions 104 may be located between the layer where the plurality of touch electrodes 103 are located and the organic insulating layer 101, that is, the layer where the plurality of bridging portions 104 are located, the inorganic insulating layer 105, and the layer where the plurality of touch electrodes 103 are located are sequentially stacked on the side of the organic insulating layer 101 away from the substrate 100. Of course, in a specific implementation, the plurality of bridging portions 104 may also be located on the side of the layer where the plurality of touch electrodes 103 are located away from the organic insulating layer 101. At this time, the layer where the plurality of touch electrodes 103 are located, the inorganic insulating layer 105, and the layer where the plurality of bridging portions 104 are located are sequentially stacked on the side of the organic insulating layer 101 away from the substrate 100. The following will take the plurality of bridging portions 104 being located between the layer where the plurality of touch electrodes 103 are located and the organic insulating layer 101 as an example for description.

[0073] In some embodiments, such as Figure 12As shown, there are six groove structures C, which are distributed along the first direction X from one side of the display substrate to the other side, and are successively the first groove structure C1, the second groove structure C2, the third groove structure C3, the fourth groove structure C4, the fifth groove structure C5, and the sixth groove structure C6. In some embodiments, the positions of all the groove structures C are substantially on a straight line. Taking two groups of touch lines 102 as an example for illustration, the first groove structure C1 and the sixth groove structure C6 are located on both sides of the whole of the two groups of touch lines 102, and the second groove structure C2, the third groove structure C3, the fourth groove structure C4, and the fifth groove structure C5 are located in the middle of the two groups of touch lines 102. In some embodiments, the widths and / or depths of the groove structures C are substantially the same. In some embodiments, the outermost groove structures C (such as the first groove structure C1 and the sixth groove structure C6) have the smallest length. Between the two groups of touch lines 102, the lengths of the groove structures C (such as the second groove structure C2 and the fifth groove structure C5) close to the two groups of touch lines 102 are greater than the lengths of the groove structures C (such as the third groove structure C3 and the fourth groove structure C4) far from the two groups of touch lines 102. And the widths of the respective groove structures C are symmetric with respect to a virtual median line MN.

[0074] It should be noted that in the actual process, due to process conditions or other factors, the above "substantially the same" may be exactly the same or there may be some deviations. Therefore, as long as the relationship of "substantially the same" between the above features meets the allowable error, it belongs to the protection scope of the present disclosure. In addition, as Figure 12 shown, there is also a bending area PB in the non-display area BB. Further, the groove structure C is located between the encapsulation dam 106 and the bending area PB.

[0075] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as Figures 6 to 11 shown, it may further include: at least one floating line 107 located in the non-display area BB; wherein, the multiple touch lines 102 can be divided into at least one group of touch lines 102, and the at least one floating line 107 is located on at least one side of the two side edges of at least one group of touch lines 102. In some embodiments, the multiple touch lines 102 may only form one group, and in other embodiments, the multiple touch lines 102 may be divided into two groups, which can be reasonably set according to the border size of the actual product and the number of touch lines 102, and will not be specifically limited herein. In addition, since the inorganic insulating layer 105 at the edge of each group of touch lines 102 is prone to wrinkle and even separate from the organic insulating layer 101, by providing the floating line 107 at the edge of each group of touch lines 102, the separation phenomenon of the inorganic insulating layer 105 extending to the area where the touch lines 102 are located and causing poor touch can be effectively suppressed.

[0076] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, as Figures 7 to 11 shown, multiple touch lines 102 can be divided into two groups of touch lines 102, and the at least one floating line 107 is multiple. The multiple floating lines 107 can be respectively located at the two side edges of each group of touch lines 102. By arranging the floating lines 107 at the two side edges of each group of touch lines 102, the detachment phenomenon of the inorganic insulating layer 105 extending to the area where the touch lines 102 are located can be more effectively suppressed, resulting in poor touch.

[0077] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, as Figure 6 shown, each group of touch lines 102 is arranged along the first direction X and extends along the second direction Y, and the first direction X and the second direction Y intersect. The multiple floating lines 107 are respectively located at the two side edges of each group of touch lines 102 in the first direction X. Since the inorganic insulating layer 105 at the two side edges of each group of touch lines 102 is prone to wrinkle or even detach from the flat layer 101, by arranging the floating lines 107 at the two side edges of each group of touch lines 102, the detachment phenomenon of the inorganic insulating layer 105 extending to the area where the touch lines 102 are located can be effectively suppressed, resulting in poor touch.

[0078] It should be noted that in the present disclosure, to avoid the floating line 107 interfering with the signals on the touch line 103, the floating line 107 can be set not to access any signals.

[0079] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, in order to effectively suppress the detachment phenomenon of the inorganic insulating layer 105 extending to the area where the touch lines 102 are located, the number of the multiple floating lines 107 on both sides of each group of touch lines 102 can be set to be the same, as Figure 7 and Figure 9 shown.

[0080] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, as Figures 7 to 11 shown, the multiple floating lines 107 can be a single layer or a double-layer structure, and its film layer structure can be the same layer and the same material as at least one of the layers where the multiple touch electrodes 103 are located and the layers where the multiple bridging parts 104 are located.

[0081] The inorganic insulating layer 105 is located between the layers where the multiple touch electrodes 103 are located and the layers where the multiple bridging parts 104 are located. Therefore, arranging the floating lines 107 in the layers where the multiple touch electrodes 103 are located or the layers where the multiple bridging parts 104 are located can effectively suppress the detachment of the inorganic insulating layer 106. Arranging the floating lines 107 in both the layers where the multiple touch electrodes 103 are located and the layers where the multiple bridging parts 104 are located can achieve a double-layer reinforcement effect on the inorganic insulating layer 105, thereby better preventing the inorganic insulating layer 105 from detaching.

[0082] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, in order to effectively prevent the inorganic insulating layer 105 from detaching, as Figure 7 and Figure 8 shown, when multiple floating lines 107 are disposed on the same layer as multiple bridging portions 104, the orthographic projection of the multiple floating lines 107 on the substrate 100 is located within the orthographic projection of the inorganic insulating layer 105; as Figure 9 and Figure 10 shown, when multiple floating lines 107 are disposed on the same layer as multiple touch electrodes 103, the orthographic projection of some of the floating lines 107 on the substrate 100 is located within the orthographic projection of the inorganic insulating layer 106, and the orthographic projection of the remaining floating lines 107 on the substrate 100 overlaps with the orthographic projection of the hollow structure H and does not overlap with the orthographic projection of the groove structure C; as Figure 9 and Figure 11 shown, when the multiple floating lines 107 include multiple first floating lines 1071 disposed on the same layer as multiple touch electrodes 103 and multiple second floating lines 1072 disposed on the same layer as multiple bridging portions 104, in a direction perpendicular to the substrate 100, some of the first floating lines 1071 are correspondingly disposed with all of the second floating lines 1072, and the remaining first floating lines 1071 do not overlap with all of the second floating lines 1072.

[0083] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, in order to enhance the reinforcement effect on the inorganic insulating layer 105, the region where the above-mentioned some of the first floating lines 1071 are located can be set between the region where the remaining first floating lines 1071 are located and the region where the touch line 102 is located. In other words, a double-layer floating line (the some of the first floating lines 1071 and all of the second floating lines 1072 respectively) is provided in the region close to the touch line 102, and only a single-layer floating line (i.e., the remaining first floating lines 1072) is provided in the region far from the touch line 102. Further, the number of the remaining first floating lines 1072 included in the single-layer floating line can be greater than the number of the some of the first floating lines 1071 included in the double-layer floating line.

[0084] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the orthographic projection of some of the first floating lines 1071 on the substrate 100 is located within the orthographic projection of the inorganic insulating layer 105; a part of the structure of at least one of the remaining first floating lines 1071 overlaps with the hollow structure H in the orthographic projection on the substrate 100 and does not overlap with the groove structure C, and the other part of the structure does not overlap with the hollow structure H. This enables an inorganic insulating layer 105 to be provided between some of the first floating lines 1071 and all of the second floating lines 1072, preventing the correspondingly arranged first floating lines 1071 and second floating lines 1072 from being directly overlapped, thereby solving the problem of peeling caused by poor adhesion of the double-layer metal overlap.

[0085] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, to ensure the double-layer reinforcement effect on the inorganic insulating layer 105, it can be set that the orthographic projection of some of the first floating lines 1071 on the substrate 100 substantially completely coincides with the orthographic projection of all of the second floating lines 1072. Specifically, "substantially completely coincides" means that the first floating line 1071 exactly covers the corresponding second floating line 1072, or the first floating line 1071 covers a vast majority (e.g., 90%-99%) of the corresponding second floating line 1072. In some embodiments, the orthographic projection of some of the first floating lines 1071 on the substrate 100 completely coincides with the orthographic projection of all of the second floating lines 1072.

[0086] In some embodiments, at least one of the remaining first floating lines 1072 has a part of the structure overlapping with the inorganic insulating layer 105 in terms of overlapping area, and the other part of the structure connected to it has no overlapping area with the inorganic insulating layer 105, that is, it is located in the hollow structure H. At least one of the above-mentioned remaining first floating lines 1072 has a smooth step transition from having the inorganic insulating layer 105 as a carrier to not having the inorganic insulating layer 105 as a carrier, which can further increase the adhesion between the floating line 107 and the film layer under the hollow structure H and the inorganic insulating layer 105.

[0087] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as Figure 7 and Figure 9 shown, in the first direction X, the first pitch d 1 between adjacent two floating lines 107, the second pitch d 2 between adjacent two touch lines 102, and the third pitch d 3 between adjacent floating line 107 and touch line 102 are the same. In some embodiments, the first pitch d 1 , the second pitch d 2 and the third pitch d 3It can be 4μm - 25μm, such as 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, 11μm, 12μm, 13μm, 14μm, 15μm, 16m, 17μm, 18μm, 19μm, 20μm, 21μm, 22μm, 23μm, 24μm, 25μm, etc.

[0088] By setting the first spacing d between the floating lines 107 1 and the third spacing d between the floating line 107 and the touch line 102 3 equal to the second spacing d between the touch lines 102 2 it is possible to fabricate the floating lines 107 using the same process as that for fabricating the touch lines 102, thus ensuring process uniformity and avoiding the adverse effects of process fluctuations caused by fabricating the floating lines 107 on the touch lines 102.

[0089] In some embodiments, in the above - mentioned display substrate provided by the embodiments of the present disclosure, as Figure 6 , Figure 7 and Figure 9 shown, multiple floating lines 107 extend from the edges of multiple touch lines 102 on the side close to the display area AA to be flush with the ends of multiple touch lines 102 on the side away from the display area AA. In some embodiments, multiple floating lines 107 and multiple touch lines 102 both span across the encapsulation dam 106, and the ends of both on the side away from the display area AA are flush with the lower boundary line of the inorganic insulating layer 105 adjacent to the bending area PB, as Figure 6 shown. This can make the floating lines 107 longer, thereby improving the anti - bending performance of the floating lines 107, and further better realizing the reinforcement effect on the inorganic insulating layer 106. In addition, when the remaining part of the first floating line 1071, which is in direct contact with the organic insulating layer 101 outside the groove structure C covered by the hollow structure H, extends to the edges of multiple touch lines 102 on the side away from the display area AA, the remaining part of the first floating line 1071 is in direct contact with the inorganic insulating layer 105 at the edges of multiple touch lines 102 on the side away from the display area AA, thereby increasing the adhesion force between the inorganic insulating layer 105 and the organic insulating layer 101 and further improving the reinforcement effect on the inorganic insulating layer 105.

[0090] In some embodiments, in the above - mentioned display substrate provided by the embodiments of the present disclosure, as Figure 5 shown, multiple touch lines 102 may specifically include multiple touch driving lines 102a and multiple touch sensing lines 102b;

[0091] Multiple touch electrodes 103 may specifically include: multiple touch driving electrodes 1031 arranged in the first direction X, and multiple touch sensing electrodes 1032 arranged in the second direction Y;

[0092] Each touch driving line 102a is electrically connected to a row of touch driving electrodes 1031, and each touch sensing line 102b is electrically connected to a column of touch sensing electrodes 1032.

[0093] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as Figure 13 shown, the organic insulating layer 101 may include: a planar layer 1011, and a pixel defining layer 1012 located on the side of the planar layer 1011 away from the substrate 100. In some embodiments, the planar layer 1011 may be Figure 13 the single-layer structure shown, or may also be Figure 14 the double-layer structure shown. And when the planar layer 1011 is a double-layer structure, it may include a first planar layer 1011a and a second planar layer 1011b, as Figure 14 shown. At this time, the encapsulation dam 106 may include: a protection part provided on the planar layer 1011, and a barrier part provided on the pixel defining layer 1012. In some embodiments, as Figure 13 shown, the organic insulating layer 101 may further include: a spacer layer 1013 located on the side of the pixel defining layer 1012 away from the planar layer 1011. In this case, the encapsulation dam 106 may include: a protection part provided on the planar layer 1011, a barrier part provided on the pixel defining layer 1012, and a support part provided on the spacer layer 1013.

[0094] In other embodiments, the encapsulation dam is not limited to the above film layer structure, and may include at least one layer structure provided on the same layer as the film layer in the display area. The encapsulation dam may include at least one, for example, it may be two or more. The film layer composition of each encapsulation dam may be the same or different, the number of film layers may be the same or different, and the height may be the same or different.

[0095] In some embodiments, the groove structure C may be formed on the pixel defining layer 1012 and the first planar layer 1011a, exposing a partial surface of the second planar layer 1011b, or may also be further formed on the second planar layer 1011b.

[0096] It should be noted that in the present disclosure, at least one encapsulation dam 106 may be included. When there are multiple encapsulation dams 106, a groove structure C is also provided between adjacent encapsulation dams 106. However, since the groove structure C between adjacent encapsulation dams 106 is far from the bending area, it will not affect the adhesion between the inorganic insulating layer 106 and the organic insulating layer 101. Therefore, there is no need to perform a hollowing-out design on the inorganic insulating layer 105 corresponding to the groove structure C between adjacent encapsulation dams 106. Of course, in some embodiments, a hollowing-out design may also be performed on the inorganic insulating layer 105 corresponding to the groove structure C between adjacent encapsulation dams 106 according to actual needs, which is not limited herein.

[0097] In some embodiments, as Figure 8 and Figure 12 shown, the edge of the groove structure C in the organic insulating layer 101 closest to the display area AA is not flush with the edge of the hollow structure H in the inorganic insulating layer 105 closest to the display area AA, that is, the two edges form a stepped structure. In some embodiments, as Figure 8 and Figure 12 shown, the end face of the groove structure C in the organic insulating layer 101 closest to the display area AA is not flush with the end face of the hollow structure H in the inorganic insulating layer 105 closest to the display area AA, that is, the two end faces form a stepped structure. In some embodiments, the organic insulating layer 101 has a part of its surface exposed by the inorganic insulating layer 105 on the side away from the display area AA of the encapsulation dam 106, that is, the inorganic insulating layer 105 not only does not cover the groove structure C in the organic insulating layer 101, but also does not cover a part of the organic insulating layer 101 on the side of the groove structure C close to the display area AA.

[0098] In some embodiments, the shortest distance from the encapsulation dam 106 to the boundary of the inorganic insulating layer 105 is less than the shortest distance from the encapsulation dam 106 to the boundary of the organic insulating layer 101 (the boundary of the groove structure C closest to the display area AA). In some embodiments, the shortest distance from the encapsulation dam 106 to the boundary of the organic insulating layer 101 (the boundary of the groove structure C closest to the display area AA) is less than the shortest distance from the encapsulation dam 106 to the boundary of the bending area PB closest to the display area AA. In some embodiments, the farthest distance from the encapsulation dam 106 to the boundary of the inorganic insulating layer 105 is greater than the shortest distance from the encapsulation dam 106 to the boundary of the organic insulating layer 101 (the boundary of the groove structure C closest to the display area AA). In some embodiments, the farthest distance from the encapsulation dam 106 to the boundary of the inorganic insulating layer 105 is less than the shortest distance from the encapsulation dam 106 to the boundary of the bending area PB closest to the display area AA.

[0099] In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as Figure 13 and Figure 14As shown, it may further include: a plurality of pixel driving circuits located between the substrate 100 and the organic insulating layer 101. Each pixel circuit may include a transistor and a capacitor. The transistor includes an active layer 108, a gate 109, a source 110, and a drain 111. The capacitor includes a first capacitor electrode 112 and a second capacitor electrode 113. The display substrate may further include a plurality of light-emitting devices 114 located between the organic insulating layer 101 and the layer where the plurality of touch lines 102 are located. Each light-emitting device 114 includes an anode 1141, a light-emitting functional layer 1142, and a cathode 1143. Specifically, the plurality of pixel driving circuits and the plurality of light-emitting devices 114 are both located in the display area AA, and the plurality of pixel driving circuits and the plurality of light-emitting devices 114 are correspondingly electrically connected. In some embodiments, the light-emitting functional layer 1142 may include a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting material layer, a hole blocking layer, an electron transport layer, and an electron injection layer. The material of the light-emitting material layer may include small molecule organic materials or polymer molecule organic materials, and may be a fluorescent light-emitting material or a phosphorescent light-emitting material, and may emit red light, green light, blue light, or may emit white light, etc. The anodes 1141 of the light-emitting devices 114 are isolated from each other by the pixel defining layer 1012, and may be made of materials such as ITO (indium tin oxide), indium zinc oxide (IZO), zinc oxide (ZnO), etc. The cathodes 1143 of the light-emitting devices 114 are an integral structure provided as a whole surface, and may be made of metal materials such as lithium (Li), aluminum (Al), magnesium (Mg), silver (Ag), etc. Additionally, in the present disclosure, as Figure 13 and Figure 14 shown, the display substrate may further include: a buffer layer 115, a first gate insulating layer 116, a second gate insulating layer 117, an interlayer dielectric layer 118, a packaging layer 119, a passivation layer 120, and an interconnection electrode 121. The packaging layer 119 may include a first inorganic packaging layer 1191, an organic packaging layer 1192, and a second inorganic packaging layer 1193.

[0100] It should be noted that, in some embodiments, the flat layer 1011 includes at least one layer, for example, it can be two layers (specifically, the first flat layer 1011a and the second flat layer 1011b). The groove structure C can be disposed on the flat layer 1011 farthest from the substrate 100, or can be disposed on the first flat layer 1011a and the second flat layer 1012b. In other embodiments, a passivation layer 120 can further be included between the interlayer dielectric layer 118 and the flat layer 1011 (or the second flat layer 1012b); the groove structure C can be disposed on the flat layer 1011 farthest from the substrate 100, or can be disposed on the first flat layer 1011a and the second flat layer 1012b, or can be disposed on the first flat layer 1011a, the second flat layer 1012b and the passivation layer 120. In addition, the inorganic insulating layer 105 provided with the hollow structure H in the present disclosure includes, but is not limited to, the inorganic insulating layer between the layers where a plurality of touch electrodes 103 are located and the layers where a plurality of bridging portions 104 are located, and can further include a first inorganic encapsulation layer 1191, a second inorganic encapsulation layer 1193, a first gate insulating layer 116, a second gate insulating layer 117, an interlayer dielectric layer 118, etc.

[0101] In some embodiments, the shortest distance from the light-emitting device 114 closest to the non-display area BB to the boundary of the inorganic insulating layer 105 is less than the shortest distance from the light-emitting device 114 closest to the non-display area BB to the boundary of the organic insulating layer 101 (the boundary on the side closest to the display area AA in the groove structure C). In some embodiments, the shortest distance from the light-emitting device 114 closest to the non-display area BB to the boundary of the organic insulating layer 101 (the boundary on the side closest to the display area AA in the groove structure C) is less than the shortest distance from the light-emitting device 114 closest to the non-display area BB to the boundary of the bending area PB on the side closest to the display area AA.

[0102] In some embodiments, the shortest distance from the pixel driving circuit closest to the non-display area BB to the boundary of the inorganic insulating layer 105 is less than the shortest distance from the pixel driving circuit closest to the non-display area BB to the boundary of the organic insulating layer 101 (the boundary on the side closest to the display area AA in the groove structure C). In some embodiments, the shortest distance from the pixel driving circuit closest to the non-display area BB to the boundary of the organic insulating layer 101 (the boundary on the side closest to the display area AA in the groove structure C) is less than the shortest distance from the pixel driving circuit closest to the non-display area BB to the boundary of the bending area PB on the side closest to the display area AA.

[0103] In some embodiments, such as Figure 15As shown, around the groove structure C, the slope angle λ of the boundary of the organic insulating layer 101 is greater than the slope angle θ of the boundary of the inorganic insulating layer 105. Optionally, around the groove structure C, the slope angle λ of the boundary of the organic insulating layer 101 is approximately 30° - 50°, and the slope angle θ of the boundary of the inorganic insulating layer 105 is approximately 30°. In some embodiments, the slope angle of the boundary of the inorganic insulating layer 105 closest to the encapsulation dam 106 is approximately 70°. In some embodiments, as Figure 16 shown, the slope angle δ of the organic insulating layer 101 at the boundary of the inorganic insulating layer 105 farthest from the encapsulation dam 106 is greater than the slope angle λ, and the slope angle β of the boundary of the inorganic insulating layer 105 farthest from the encapsulation dam 106 can be less than or equal to the slope angle δ of the organic insulating layer 101 at this position, and preferably the slope angle β is equal to δ. In some embodiments, the slope angle δ of the boundary of the organic insulating layer 101 is approximately 70°, and the slope angle β of the boundary of the inorganic insulating layer 105 is between approximately 60° - 70°. In some embodiments, as Figure 16 shown, during the process of manufacturing the inorganic insulating layer 105, an over-etch phenomenon may occur in which the organic insulating layer 101 is recessed away from the groove structure C. Additionally, "approximately" means that values within the allowable error range of the manufacturing process (for example, ±10%) belong to the protection scope of the present disclosure.

[0104] Based on the same inventive concept, an embodiment of the present disclosure further provides a display panel, including the above-mentioned display substrate provided by the embodiment of the present disclosure.

[0105] In some embodiments, the display panel can be an organic light-emitting diode display panel (OLED), a quantum dot light-emitting display panel (QLED), or a micro light-emitting diode display panel (Micro LED). Since the principle of solving problems of this display panel is similar to that of the above-mentioned display substrate, therefore, the implementation of this display panel provided by the embodiment of the present disclosure can refer to the implementation of the above-mentioned display substrate provided by the embodiment of the present disclosure, and repeated parts will not be elaborated. Other essential components of the display panel (such as polarizers) are understood to be possessed by those of ordinary skill in the art, and will not be elaborated here, nor should they be regarded as a limitation to the present disclosure.

[0106] Based on the same inventive concept, an embodiment of the present disclosure further provides a display device, including the above-mentioned display panel provided by the embodiment of the present disclosure.

[0107] The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, a smart watch, a fitness bracelet, a personal digital assistant, etc. Other essential components of the display device (such as a driving chip) should be understood by those of ordinary skill in the art and will not be elaborated herein, nor should it be regarded as a limitation to the present disclosure. Additionally, since the principle of solving problems by this display device is similar to that of the above-mentioned display panel, the implementation of this display device can refer to the embodiments of the above-mentioned display panel, and the repeated parts will not be elaborated again.

[0108] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A display substrate, wherein, comprising: a substrate substrate, the substrate substrate including a display area and a non-display area located on one side of the display area; a packaging dam, located in the non-display area and disposed around the display area; an organic insulating layer, located on the substrate substrate; the organic insulating layer has a groove structure, and the groove structure is located on a side of the packaging dam away from the display area; a touch structure, located on a side of the organic insulating layer facing away from the substrate substrate; the touch structure includes a plurality of touch lines extending to the non-display area; an inorganic insulating layer, located on the substrate substrate; the inorganic insulating layer has a hollow structure on a side of the packaging dam away from the display area, the hollow structure covering the groove structure and not overlapping with the orthographic projections of the plurality of touch lines; further comprising: at least one floating line located in the non-display area; wherein, the plurality of touch lines are divided into at least one group of touch lines, and the at least one floating line is located on at least one side of the two side edges of the at least one group of touch lines.

2. The display substrate according to claim 1, wherein, the touch structure further comprises: a plurality of touch electrodes and a plurality of bridging portions located in the display area; wherein, each of the touch lines includes: a first branch portion provided on the same layer as the plurality of touch electrodes, and a second branch portion provided on the same layer as the plurality of bridging portions and electrically connected to the first branch portion; the plurality of touch electrodes are electrically connected to the plurality of touch lines, and each of the bridging portions is correspondingly electrically connected to two of the touch electrodes; the inorganic insulating layer is located between the layer where the plurality of touch electrodes are located and the layer where the plurality of bridging portions are located.

3. The display substrate according to claim 2, wherein, the plurality of bridging portions are located between the layer where the plurality of touch electrodes are located and the organic insulating layer.

4. The display substrate according to claim 2, wherein, the plurality of touch lines are divided into two groups of touch lines, the at least one floating line is multiple, the multiple floating lines are respectively located on the two side edges of each group of touch lines, and each group of the touch lines is arranged in a first direction and extends in a second direction, and the first direction and the second direction intersect.

5. The display substrate according to claim 4, wherein, the multiple floating lines are respectively located on the two side edges in the first direction of each group of touch lines.

6. The display substrate according to claim 4 or 5, wherein, the multiple floating lines are disposed on at least one of the layer where the plurality of touch electrodes are located and the layer where the plurality of bridging portions are located.

7. The display substrate according to claim 6, wherein, the multiple floating lines include: multiple first floating lines provided on the same layer as the plurality of touch electrodes, and multiple second floating lines provided on the same layer as the plurality of bridging portions; wherein, in a direction perpendicular to the substrate substrate, some of the first floating lines are correspondingly arranged with the multiple second floating lines, and the remaining first floating lines do not overlap with the multiple second floating lines.

8. The display substrate according to claim 7, wherein, the area where some of the first floating lines are located is between the area where the remaining first floating lines are located and the area where the touch lines are located.

9. The display substrate according to claim 8, in, The number of the first floating wires in the remaining part is greater than the number of the first floating wires in the part.

10. The display substrate according to claim 7, in, The orthographic projections of the plurality of second floating lines on the base substrate completely overlap with the orthographic projections of the portion of the first floating lines.

11. The display substrate according to claim 7, in, The orthographic projection of the portion of the first floating wires on the base substrate is located within the orthographic projection of the inorganic insulating layer; A partial structure of at least one of the first floating lines in the remaining part has an orthographic projection on the base substrate overlapping with the hollow structure and not overlapping with the groove structure, and another partial structure not overlapping with the hollow structure.

12. The display substrate according to any one of claims 4, 5, 7 to 11, in, In the first direction, a first distance between two adjacent floating lines, a second distance between two adjacent touch lines, and a third distance between adjacent floating lines and touch lines are the same.

13. The display substrate according to claim 12, in, The first spacing, the second spacing and the third spacing are 4 μm-25 μm.

14. The display substrate according to any one of claims 4, 5, 7-11, and 13, in, The plurality of floating lines extend from edges of the plurality of touch lines close to the display area to be flush with ends of the plurality of touch lines away from the display area.

15. The display substrate according to any one of claims 4, 5, 7-11, and 13, in, The number of the plurality of floating lines on both sides of each group of the touch control lines is the same.

16. The display substrate according to any one of claims 2 to 5, 7 to 11, and 13, in, The plurality of touch control lines include a plurality of touch control driving lines and a plurality of touch control sensing lines; The plurality of touch electrodes include: a plurality of touch driving electrodes arranged in a first direction, and a plurality of touch sensing electrodes arranged in a second direction; Each of the touch driving lines is electrically connected to a row of the touch driving electrodes, and each of the touch sensing lines is electrically connected to a column of the touch sensing electrodes.

17. The display substrate according to any one of claims 1 to 5, 7 to 11, and 13, in, The organic insulating layer includes: a planar layer and a pixel defining layer located on a side of the planar layer away from the base substrate.

18. The display substrate according to claim 17, in, The flat layer is a single-layer structure or a double-layer structure.

19. A display panel, in, Comprising the display substrate as described in any one of claims 1-18.

20. A display device, in, Comprising the display panel as claimed in claim 19.

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