Touch structure, display substrate and display device

Abstract

The touch structure comprises a first touch area, a second touch area, a first touch routing area and a second touch routing area, the touch structure comprises a plurality of first touch electrode strips, parts of the first touch electrode strips are located in the first touch area, and the rest parts of the first touch electrode strips are located in the second touch area; the first touch routing group is located in the first touch routing area, the second touch routing group is located in the second touch routing area, and the first touch routing group comprises an mth first touch routing line closest to the second touch routing group; the second touch control wire group comprises an nth second touch control wire closest to the first touch control wire group, and one of the mth first touch control wire and the nth second touch control wire comprises a compensation wire part; one part of the mth first touch control wire and the compensation wire part are arranged in parallel or one part of the nth second touch control wire and the compensation wire part are arranged in parallel, so that compensation capacitance is generated between the mth first touch control wire and the nth second touch control wire.

Description

Touch structure, display substrate and display device Technical Field

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

[0002] With the continuous development of display technology, user interfaces with touch functionality are widely used in various electronic devices, such as display panels and display devices. The touch structure used to implement touch functionality includes touch electrodes and touch traces. The arrangement of touch traces is one of the key factors affecting touch sensitivity.

[0003] The above information disclosed in this section is only for understanding the background of the inventive concept of the present disclosure and therefore the above information may contain information that does not constitute prior art.

[0004] Summary of the Invention

[0005] In one aspect, a touch structure is provided, the touch structure including a first touch area, a second touch area, a first touch trace area, and a second touch trace area, wherein the second touch area is located on one side of the first touch area along a first direction, and the second touch trace area is located on one side of the first touch trace area along the first direction, the touch structure comprising:

[0006] a plurality of first touch electrode strips extending along a second direction and spaced apart along the first direction, wherein some of the first touch electrode strips are located in the first touch area and the remaining first touch electrode strips are located in the second touch area, and the first direction intersects the second direction; and

[0007] A plurality of touch traces, including a first touch trace group located in the first touch trace area and a second touch trace group located in the second touch trace area, wherein the first touch trace group includes m first touch traces, the first touch traces are electrically connected to the first touch electrode strips located in the first touch area, and two adjacent first touch traces are arranged in parallel; the second touch trace group includes n second touch traces, the second touch traces are electrically connected to the first touch electrode strips located in the second touch area, and two adjacent second touch traces are arranged in parallel, wherein m and n are both integers greater than or equal to 2.

[0008] Among them, the first touch trace group includes the mth first touch trace that is closest to the second touch trace group; the second touch trace group includes the nth second touch trace that is closest to the first touch trace group, and one of the mth first touch trace and the nth second touch trace includes a compensation trace portion, so that a portion of the mth first touch trace and the compensation trace portion in the nth second touch trace are arranged in parallel or a portion of the nth second touch trace and the compensation trace portion in the mth first touch trace are arranged in parallel, thereby generating a compensation capacitance between the mth first touch trace and the nth second touch trace.

[0009] According to some exemplary embodiments, the mth first touch trace includes the compensation trace portion, the compensation trace portion extends from the first touch trace area to the second touch trace area, the compensation trace portion and a portion of the nth second touch trace are arranged in parallel, the second touch trace group includes an n-1th second touch trace adjacent to the nth second touch trace, and the compensation trace portion is located on a side of the nth second touch trace away from the n-1th second touch trace; or

[0010] The nth second touch routing line includes the compensation routing line portion, the compensation routing line portion extends from the second touch routing line area to the first touch routing line area, the compensation routing line portion and a portion of the mth first touch routing line are arranged in parallel, the first touch routing line group includes the m-1th first touch routing line adjacent to the mth first touch routing line, and the compensation routing line portion is located on a side of the mth first touch routing line away from the m-1th first touch routing line.

[0011] According to some exemplary embodiments, the compensation capacitance generated between the compensation wiring portion and the nth second touch wiring is substantially equal to the parasitic capacitance generated between the nth second touch wiring and the (n-1)th second touch wiring; or

[0012] The compensation capacitance generated between the compensation wiring portion and the mth first touch wiring is substantially equal to the parasitic capacitance generated between the mth first touch wiring and the m-1th first touch wiring.

[0013] According to some exemplary embodiments, the spacing between the compensation routing portion and the nth second touch routing is equal to the spacing between the nth second touch routing and the n-1th second touch routing, and the parallel distance between the compensation routing portion and the nth second touch routing is equal to the parallel distance between the nth second touch routing and the n-1th second touch routing; or

[0014] The spacing between the compensation routing portion and the mth first touch routing is equal to the spacing between the mth first touch routing and the m-1th first touch routing, and the parallel distance between the compensation routing portion and the mth first touch routing is equal to the parallel distance between the mth first touch routing and the m-1th first touch routing.

[0015] According to some exemplary embodiments, a distance between the compensation routing portion and the nth second touch routing is smaller than a distance between the nth second touch routing and the n-1th second touch routing, and a parallel distance between the compensation routing portion and the nth second touch routing is smaller than a parallel distance between the nth second touch routing and the n-1th second touch routing; or

[0016] The spacing between the compensation routing portion and the mth first touch routing is smaller than the spacing between the mth first touch routing and the m-1th first touch routing, and the parallel distance between the compensation routing portion and the mth first touch routing is smaller than the parallel distance between the mth first touch routing and the m-1th first touch routing.

[0017] According to some exemplary embodiments, the touch structure includes multiple touch drive electrodes and multiple touch sensing electrodes, and one of the first touch electrode strips includes multiple touch drive electrodes arranged sequentially and electrically connected along the second direction, or one of the first touch electrode strips includes multiple touch sensing electrodes arranged sequentially and electrically connected along the second direction.

[0018] According to some exemplary embodiments, the compensation trace portion, the first touch trace group, and the second touch trace group are located on the same layer.

[0019] In another aspect, a display substrate is provided, the display substrate comprising a display area and a peripheral area located outside the display area, the display substrate comprising:

[0020] substrate;

[0021] a light-emitting layer located on the base substrate;

[0022] an encapsulation layer located on a side of the light-emitting layer away from the base substrate;

[0023] The touch structure is located on a side of the packaging layer away from the base substrate, and the touch structure includes the above-mentioned touch structure.

[0024] According to some exemplary embodiments, the display substrate includes a retaining wall arranged on the base substrate and located in the peripheral area, the retaining wall includes a first retaining wall arranged around the display area and a second retaining wall arranged around the first retaining wall, and at least part of the touch line extends from a side of the second retaining wall close to the display area to a side of the second retaining wall away from the display area.

[0025] According to some exemplary embodiments, the display substrate further includes a bridging routing portion, which is located on a side of the second retaining wall close to the base substrate or on a side of a portion of the second retaining wall close to the base substrate, and at least part of the touch routing includes an inner touch routing portion located on a side of the second retaining wall close to the display area and an outer touch routing portion located on a side of the second retaining wall away from the display area, one end of the bridging routing portion is electrically connected to the inner touch routing portion and the other end is electrically connected to the outer touch routing portion.

[0026] According to some exemplary embodiments, the display substrate further includes: a source-drain metal layer located on the base substrate; and a touch metal layer located on a side of the source-drain metal layer away from the base substrate, the bridging wiring portion is located on the source-drain metal layer, and the inner touch wiring portion and the outer touch wiring portion are located on the touch metal layer.

[0027] According to some exemplary embodiments, the display substrate further includes a raised portion arranged adjacent to the second retaining wall, the raised portion including a first raised portion located on a side of the second retaining wall close to the display area and a second raised portion located on a side of the second retaining wall away from the first raised portion, at least part of the touch lines pass through the first raised portion, cross the second retaining wall and extend to the second raised portion.

[0028] According to some exemplary embodiments, the touch trace is located in a touch metal layer, the display substrate further includes a planarization layer located on a side of the touch metal layer close to the base substrate, and the raised portion is located in the planarization layer.

[0029] According to some exemplary embodiments, the display substrate includes an organic insulating layer located on a side of the multiple touch lines close to the base substrate, and the multiple touch lines include a first routing portion crossing the boundary of the organic insulating layer and a second routing portion located on both sides of the first routing portion. Two adjacent touch lines in the first routing portion have a first spacing, and two adjacent touch lines in the second routing portion have a second spacing, and the first spacing is greater than the second spacing.

[0030] According to some exemplary embodiments, the first spacing is greater than or equal to 8 micrometers.

[0031] According to some exemplary embodiments, the display substrate includes: a first planarization layer located on the base substrate; a second planarization layer located on a side of the first planarization layer away from the base substrate; and a third planarization layer located on a side of the second planarization layer away from the base substrate; and

[0032] The organic insulating layer includes at least one of a first planarization layer, a second planarization layer, and a third planarization layer.

[0033] According to some exemplary embodiments, the display substrate includes a first electrode layer located on a side of the light-emitting layer close to the base substrate, the peripheral area includes a corner area located outside a corner of the display area; the display substrate includes a second electrode power signal bridge portion located in the first electrode layer, and the second electrode power signal bridge portion includes a first exhaust hole;

[0034] A portion of the second electrode signal bridge portion is located in the corner area, and a portion of the touch trace is located in the corner area; and

[0035] In the corner area, an orthographic projection of the touch trace on the base substrate does not overlap with an orthographic projection of the first exhaust hole on the base substrate.

[0036] According to some exemplary embodiments, the display substrate further includes a source-drain metal layer located on a side of the first electrode layer close to the base substrate, and the display substrate further includes a second electrode signal trace located in the source-drain metal layer;

[0037] A portion of the second electrode signal trace is located in the corner area, and the second electrode signal trace includes a second exhaust hole; and

[0038] In the corner area, the orthographic projection of the first exhaust hole on the base substrate at least partially overlaps with the orthographic projection of the second exhaust hole on the base substrate. In the corner area, the orthographic projection of the touch trace on the base substrate is spaced apart from the orthographic projection of either the first exhaust hole or the second exhaust hole on the base substrate.

[0039] According to some exemplary embodiments, the display substrate further includes a source-drain metal layer located on a side of the first electrode layer close to the base substrate, and the display substrate further includes a second electrode signal trace located in the source-drain metal layer; and

[0040] The orthographic projection of the second electrode signal wiring on the base substrate is spaced apart from the orthographic projection of the first exhaust hole located in the corner area on the base substrate.

[0041] According to some exemplary embodiments, the peripheral area further includes a first side area located on one side of the display area along the second direction, and in the first side area, an orthographic projection of the first exhaust hole on the base substrate and an orthographic projection of the second exhaust hole on the base substrate are arranged at intervals; and

[0042] In the first side area, the orthographic projection of the touch line on the base substrate at least partially overlaps with the orthographic projection of the first exhaust hole on the base substrate; and / or, the orthographic projection of the touch line on the base substrate at least partially overlaps with the orthographic projection of the second exhaust hole on the base substrate.

[0043] In another aspect, a display device is provided, comprising the above-mentioned display substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0045] FIG1 shows a schematic structural diagram of longitudinally extending touch electrode strips and touch traces in the related art.

[0046] FIG2 schematically shows a plan view of a touch structure according to an embodiment of the present disclosure.

[0047] FIG3 schematically shows an enlarged structural diagram of the area Q in FIG2 .

[0048] FIG. 4 schematically shows another enlarged structural diagram of the area Q in FIG. 2 .

[0049] FIG5 schematically shows a cross-sectional view of a touch structure according to an embodiment of the present disclosure.

[0050] FIG6 schematically shows a plan view of a display substrate according to an embodiment of the present disclosure.

[0051] FIG7 schematically shows a cross-sectional view of a display substrate according to an embodiment of the present disclosure.

[0052] FIG8 schematically shows a plan view of a retaining wall in a display substrate according to an embodiment of the present disclosure.

[0053] FIG. 9 schematically shows a cross-sectional view at the position BB′ in FIG. 8 .

[0054] FIG. 10 schematically shows another cross-sectional view at the position BB′ in FIG. 8 .

[0055] FIG11 schematically shows another cross-sectional view at the position BB′ in FIG8 .

[0056] FIG12 schematically shows a plan view of a touch wiring located at a boundary of an organic insulating layer in a display substrate according to an embodiment of the present disclosure.

[0057] FIG13 schematically shows a plan view of touch wiring in a corner area of ​​a display substrate according to an embodiment of the present disclosure.

[0058] FIG14A schematically shows a plan view of touch wiring in a corner area of ​​a display substrate according to an embodiment of the present disclosure.

[0059] FIG14B schematically shows a cross-sectional view at position BB′ in FIG14A .

[0060] FIG15 schematically shows a plan view of touch wiring in a first side region of a display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0061] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0062] It should be noted that in the drawings, the sizes and relative sizes of elements may be exaggerated for clarity and / or descriptive purposes. Thus, the sizes and relative sizes of the individual elements are not necessarily limited to those shown in the drawings. In the specification and drawings, the same or similar reference numerals indicate the same or similar parts.

[0063] When an element is described as being "on" another element, "connected to" another element, or "bound to" another element, the element may be directly on the other element, directly connected to the other element, or directly bound to the other element, or there may be an intermediate element. However, when an element is described as being "directly on" another element, "directly connected to" another element, or "directly bound to" another element, there is no intermediate element. Other terms and / or expressions used to describe the relationship between elements should be interpreted in a similar manner, for example, "between" versus "directly between", "adjacent" versus "directly adjacent", or "on" versus "directly on", etc. In addition, the term "connected" may refer to a physical connection, an electrical connection, a communication connection, and / or a fluid connection. In addition, the X-axis, Y-axis, and Z-axis are not limited to the three axes of a rectangular coordinate system, and may be interpreted in a broader sense. For example, the X-axis, Y-axis, and Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purposes of this disclosure, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as XYZ, XYY, YZ, and ZZ. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0064] It should be noted that although the terms "first," "second," etc. may be used herein to describe various parts, components, elements, regions, layers, and / or portions, these parts, components, elements, regions, layers, and / or portions should not be limited by these terms. Rather, these terms are used to distinguish one part, component, element, region, layer, and / or portion from another. Thus, for example, the first part, first member, first element, first region, first layer, and / or first portion discussed below may be referred to as a second part, second member, second element, second region, second layer, and / or second portion without departing from the teachings of the present disclosure.

[0065] For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," etc., may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures. It should be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features.

[0066] As used herein, the terms "substantially," "about," "approximately," "roughly," and other similar terms are used as terms of approximation rather than as terms of degree, and are intended to account for the inherent deviations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art. To account for factors such as process fluctuations, measurement problems, and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), "about" or "approximately" as used herein are inclusive of the stated value and mean within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0067] It should be noted that, in this article, the term "the same layer" refers to a layer structure formed by using the same film-forming process to form a film layer used to form a specific pattern, and then patterning the film layer using the same mask through a single patterning process. Depending on the specific pattern, a single patterning process may include multiple exposure, development, or etching processes, and the specific pattern in the resulting layer structure may be continuous or discontinuous. In other words, multiple elements, components, structures, and / or parts located in the "same layer" are composed of the same material and are formed through the same patterning process. Typically, multiple elements, components, structures, and / or parts located in the "same layer" have approximately the same thickness.

[0068] Those skilled in the art should understand that, in this article, unless otherwise specified, the expression "height" or "thickness" refers to the dimension of the surface of each film layer arranged perpendicular to the display substrate, that is, the dimension along the light emitting direction of the display substrate, or the dimension along the normal direction of the display device.

[0069] Touch screens have become increasingly ubiquitous in our lives. Based on their structure, touch screens can be categorized as add-on, on-cell, and in-cell. Based on their operating principle, they can be divided into capacitive, resistive, infrared, and surface acoustic wave types. Capacitive on-cell touch screens utilize a touch-sensing structure on the light-emitting side of the display. Due to their simple structure, thinness, and high transmittance, they are becoming the mainstream technology.

[0070] Capacitive touch technology mainly includes self-capacitive touch technology and mutual-capacitive touch technology. Taking mutual-capacitive touch technology as an example, the mutual-capacitive touch structure includes multiple touch electrodes, which include touch drive electrode strips and touch sensing electrode strips extending in different directions. The touch drive electrode strips and the touch sensing electrode strips form mutual capacitance for touch sensing at the intersections. The touch drive electrode strips are used to input excitation signals (e.g., touch drive signals), and the touch sensing electrode strips are used to output touch sensing signals. By inputting excitation signals to, for example, the touch drive electrodes extending longitudinally and receiving touch sensing signals from, for example, the touch sensing electrodes extending transversely, or by inputting excitation signals to, for example, the touch drive electrodes extending transversely and receiving touch sensing signals from, for example, the touch sensing electrodes extending longitudinally, a detection signal reflecting the capacitance value of the coupling point (e.g., intersection) of the transverse and longitudinal electrodes can be obtained. When a finger touches the touch screen (such as the cover glass), it affects the coupling between the touch drive electrode strips and the touch sensing electrode strips near the touch point, thereby changing the mutual capacitance formed at the intersection of the two electrode strips, causing the output touch sensing signal to change. The change in the touch sensing signal data can be used to calculate the corresponding coordinates of the touch point.

[0071] The touch drive signal is input to the touch drive electrode strips through the touch drive traces. The touch sensing signal collected by the touch sensing electrode strips is transmitted to the touch sensing traces. The touch drive electrode strips can be connected to the touch drive traces on one side or on both sides. The touch sensing electrode strips can be connected to the touch sensing traces on one side or on both sides. According to the trace access method, the touch trace patterns are divided into 1T1R, 2T1R, 1T2R, and 2T2R. 1T1R means that the touch drive electrode strips are connected to the touch drive traces on one side, and the touch sensing electrode strips are connected to the touch sensing traces on one side. 2T1R means that the touch drive electrode strips are connected to the touch drive traces on both sides, and the touch sensing electrode strips are connected to the touch sensing traces on one side. 1T2R means that the touch drive electrode strips are connected to the touch drive traces on one side, and the touch sensing electrode strips are connected to the touch sensing traces on both sides. 2T2R means that the touch drive electrode strips are connected to the touch drive traces on both sides, and the touch sensing electrode strips are connected to the touch sensing traces on both sides.

[0072] FIG1 shows a schematic structural diagram of longitudinally extending touch electrode strips and touch traces in the related art.

[0073] 1 , for a longitudinally extending touch electrode strip, when its touch trace is connected from one side, a problem of low touch sensitivity occurs in the middle area M. The inventors have discovered through research that this is because, in such a touch trace, a portion of the touch trace on the left is led out and extended to the left, while the remaining portion of the touch trace on the right is led out and extended to the right. Since two adjacent touch traces are usually arranged in parallel with a small line spacing, parasitic capacitance will inevitably be generated between the two adjacent touch traces after an electrical signal is applied to the touch trace.

[0074] Continuing with reference to Figure 1, it should be understood that a portion of the touch trace L-1 is arranged in parallel with a portion of the touch trace L, so parasitic capacitance will be generated between the touch trace L-1 and the touch trace L, and a portion of the touch trace R-1 is arranged in parallel with a portion of the touch trace R, so parasitic capacitance will be generated between the touch trace R-1 and the touch trace R. However, since the touch trace L and the touch trace R are extended in opposite directions respectively, there is no parallel portion between the two, so almost no parasitic capacitance will be generated between the touch trace L and the touch trace R. Then, a parasitic capacitance jump will occur from the touch trace L to the touch trace R, which will cause the touch sensitivity of the area where the touch electrode strips electrically connected to the touch trace L and the touch trace R are located to decrease, that is, the middle area M has a low touch sensitivity problem.

[0075] FIG2 schematically shows a plan view of a touch structure according to an embodiment of the present disclosure.

[0076] 2 , the touch structure 100 includes a first touch area S1, a second touch area S2, a first touch trace area S3, and a second touch trace area S4. The second touch area S2 is located on one side of the first touch area S1 along a first direction X. The second touch trace area S4 is located on one side of the first touch trace area S3 along the first direction X. The first touch trace area S3 is located on one side of the first touch area S1 along a second direction Y. The second touch trace area S4 is located on one side of the second touch area S2 along the 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.

[0077] The touch structure 100 includes a plurality of touch electrode strips 11 and a plurality of touch traces 12 , and one touch trace 12 is electrically connected to a corresponding touch electrode strip 11 .

[0078] The plurality of touch electrode strips 11 include a plurality of first touch electrode strips 111 and a plurality of second touch electrode strips 112. The plurality of first touch electrode strips 111 extend along the second direction Y and are spaced apart along the first direction X. The plurality of second touch electrode strips 112 extend along the first direction X and are spaced apart along the second direction Y. The plurality of first touch electrode strips 111 and the plurality of second touch electrode strips 112 intersect and are insulated from each other. Among the plurality of first touch electrode strips 111, some of the first touch electrode strips 111 are located in the first touch area S1, while the remaining portion of the first touch electrode strips 111 are located in the second touch area S2.

[0079] The multiple touch traces 12 include a first touch trace group 12A and a second touch trace group 12B. The first touch trace group 12A is located in the first touch trace area S3 and includes m first touch traces 121. Each first touch trace m is electrically connected to an end of a first touch electrode bar 111 located in the first touch area S1, which is close to the first touch trace area S3. Two adjacent first touch traces 121 are arranged in parallel. The second touch trace group 12B is located in the second touch trace area S4 and includes n second touch traces 122. One second touch trace 122 is connected to an end of a first touch electrode bar 111 located in the second touch area S2, which is close to the second touch trace area S4. Two adjacent second touch traces 122 are arranged in parallel.

[0080] The multiple touch lines 12 also include multiple third touch lines, which are not specifically shown in Figure 2. One end of a second touch electrode strip 112 is electrically connected to a third touch line, or both ends of a second touch electrode strip 112 are electrically connected to a third touch line respectively.

[0081] Along the direction from the first touch routing area S3 to the second touch routing area S4, the first touch routing group 12A is sequentially provided with the first first touch routing 121-1...the m-1th first touch routing 121-m-1 and the mth first touch routing 121-m; along the direction from the second touch routing area S4 to the first touch routing area S3, the second touch routing group 12B is sequentially provided with the first second touch routing 122-1...the n-1th second touch routing 122-n-1 and the nth second touch routing 122-n.

[0082] That is, the first touch trace group 12A includes the mth first touch trace 121-m closest to the second touch trace group 12B; the second touch trace group 12B includes the nth second touch trace 122-n closest to the first touch trace group 12A, and one of the mth first touch trace 121-m and the nth second touch trace 122-n includes a compensation trace portion C, so that a portion of the mth first touch trace 121-m and the compensation trace portion C in the nth second touch trace 122-n are arranged in parallel, or so that the nth second touch trace 122-n A part of it is arranged in parallel with the compensation line part C in the mth first touch line 121-m, so as to generate a compensation capacitance between the mth first touch line 121-m and the nth second touch line 122-n, so as to avoid the parasitic capacitance of the adjacent touch lines from jumping significantly between the mth first touch line 121-m and the nth second touch line 122-n, thereby avoiding the problem of decreased touch sensitivity in the area where the first touch electrode strip 111 electrically connected to the mth first touch line 121-m and the nth second touch line 122-n is located.

[0083] For example, each first touch trace 121 converges in an area of ​​the first touch trace area S3 away from the second touch trace area S4, and each second touch trace 122 converges in an area of ​​the second touch trace area S4 away from the first touch trace area S3. The first touch trace 121 and the second touch trace 122 are connected to the binding area after converging in the first touch trace area S3 and the second touch trace area S4, respectively. The binding area includes a touch driver chip. The first touch trace 121 and the second touch trace 122 are connected to the touch driver chip located in the binding area. For example, the touch driver chip includes multiple pins, each pin can correspond to a contact pad, and the first touch trace 121 and the second touch trace 122 are connected to the touch driver chip through the contact pad.

[0084] For example, the first touch electrode strip 111 includes a plurality of first touch electrode portions 111a arranged at intervals along the second direction Y, and two adjacent first touch electrode portions 111a are electrically connected via a first connecting portion 111b; the second touch electrode strip 112 includes a plurality of second touch electrode portions 112a arranged at intervals along the first direction X, and two adjacent first touch electrode portions 111a are electrically connected via a first connecting portion 112b.

[0085] For example, the outer contour of each of the first touch electrode portion 111a and the second touch electrode portion 111a is roughly diamond-shaped. In other examples, the outer contours of the first touch electrode portion 111a and the second touch electrode portion 111a can also be other shapes, such as triangles, bars, etc.

[0086] For example, m is an integer greater than or equal to 2, and n is an integer greater than or equal to 2. For another example, m and n are both positive integers greater than or equal to 3, 4, or 5.

[0087] In some embodiments of the present disclosure, m may be equal to n, that is, the first touch trace group 12A and the second touch trace group 12B may include the same number of touch traces 12. In other embodiments of the present disclosure, m may not be equal to n, that is, the first touch trace group 12A and the second touch trace group 12B may include different numbers of touch traces 12.

[0088] In some embodiments of the present disclosure, the number m of the first touch traces 121 is equal to the number of the first touch electrode strips 111 located in the first touch area S1, and the number n of the second touch traces 122 is equal to the number of the first touch electrode strips 111 located in the second touch area S2.

[0089] For example, there are multiple first touch electrode bars 111 and second touch electrode bars 112. To simplify the drawing, FIG2 schematically shows a portion of the first touch electrode bars 111 and the second touch electrode bars 112.

[0090] FIG3 schematically shows an enlarged structural diagram of the area Q in FIG2 .

[0091] In an embodiment of the present disclosure, please refer to Figures 2 and 3 in combination. The mth first touch trace 121-m includes a compensation trace portion C, which extends from the first touch trace area S3 to the second touch trace area S4. The compensation trace portion C and a portion of the nth second touch trace 122-n are arranged in parallel. The second touch trace group includes the n-1th second touch trace 122-n-1 adjacent to the nth second touch trace 122-n, and the compensation trace portion C is located on the side of the nth second touch trace 122-n away from the n-1th second touch trace 122-n-1.

[0092] In the embodiment of the present disclosure, since the capacitance value between two adjacent traces is proportional to the parallel distance and inversely proportional to the trace spacing, the compensation trace portion C can be set so that the compensation capacitance generated between the compensation trace portion C and the nth second touch trace 122-n is basically equal to the parasitic capacitance 122-n-1 generated between the nth second touch trace 122-n and the n-1th second touch trace.

[0093] In an embodiment of the present disclosure, the spacing between the compensation routing portion C and the nth second touch routing 122-n is equal to the spacing between the nth second touch routing 122-n and the n-1th second touch routing 122-n-1, and the parallel distance between the compensation routing portion C and the nth second touch routing 122-n is equal to the parallel distance between the nth second touch routing 122-n and the n-1th second touch routing 122-n-1, so that the compensation capacitance generated between the compensation routing portion C and the nth second touch routing 122-n is basically equal to the parasitic capacitance 122-n-1 generated between the nth second touch routing 122-n and the n-1th second touch routing.

[0094] In actual manufacturing, due to reasons such as manufacturing process precision, it is difficult to ensure that the spacing between the compensation trace portion C and the nth second touch trace 122-n is exactly equal to the spacing between the nth second touch trace 122-n and the (n-1)th second touch trace 122-n-1. It is also difficult to ensure that the parallel distance between the compensation trace portion C and the nth second touch trace 122-n is exactly equal to the parallel distance between the nth second touch trace 122-n and the (n-1)th second touch trace 122-n-1. As used herein, "equal" means a value within an acceptable range of deviation determined by one of ordinary skill in the art. For example, the spacing between the compensation routing portion C and the nth second touch routing 122-n is within ±5% of the spacing between the nth second touch routing 122-n and the n-1th second touch routing 122-n-1, and the parallel distance between the compensation routing portion C and the nth second touch routing 122-n is within ±5% of the parallel distance between the nth second touch routing 122-n and the n-1th second touch routing 122-n-1.

[0095] In an embodiment of the present disclosure, the spacing between the compensation routing portion C and the nth second touch routing 122-n is smaller than the spacing between the nth second touch routing 122-n and the n-1th second touch routing 122-n-1, and the parallel distance between the compensation routing portion C and the nth second touch routing 122-n is smaller than the parallel distance between the nth second touch routing 122-n and the n-1th second touch routing 122-n-1, so that the compensation capacitance generated between the compensation routing portion C and the nth second touch routing 122-n is substantially equal to the parasitic capacitance 122-n-1 generated between the nth second touch routing 122-n and the n-1th second touch routing. This configuration can reduce the area occupied by the compensation routing portion C.

[0096] FIG. 4 schematically shows another enlarged structural diagram of the area Q in FIG. 2 .

[0097] In an embodiment of the present disclosure, please refer to Figure 2 and Figure 4 in combination. The nth second touch trace 122-n includes a compensation trace portion C, which extends from the second touch trace area to the first touch trace area. The compensation trace portion C and a portion of the mth first touch trace 121-m are arranged in parallel. The first touch trace group includes the m-1th first touch trace 121-m-1 adjacent to the mth first touch trace 121-m, and the compensation trace portion C is located on the side of the mth first touch trace 121-m away from the m-1th first touch trace 121-m-1.

[0098] In the embodiment of the present disclosure, since the capacitance value between two adjacent traces is proportional to the parallel distance and inversely proportional to the trace spacing, the compensation trace portion C can be set so that the compensation capacitance generated between the compensation trace portion C and the mth first touch trace 121-m is basically equal to the parasitic capacitance generated between the mth first touch trace 121-m and the m-1th first touch trace 121-m-1.

[0099] In an embodiment of the present disclosure, the spacing between the compensation routing portion C and the mth first touch routing 121-m is equal to the spacing between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1, and the parallel distance between the compensation routing portion C and the mth first touch routing 121-m is equal to the parallel distance between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1, so that the compensation capacitance generated between the compensation routing portion C and the mth first touch routing 121-m is basically equal to the parasitic capacitance generated between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1.

[0100] In actual manufacturing, due to reasons such as manufacturing process precision, it is difficult to ensure that the spacing between the compensation trace portion C and the mth second touch trace 121-m is exactly equal to the spacing between the mth first touch trace 121-m and the m-1th first touch trace 121-m-1. It is also difficult to ensure that the parallel distance between the compensation trace portion C and the mth second touch trace 121-m is exactly equal to the parallel distance between the mth first touch trace 121-m and the m-1th first touch trace 121-m-1. As used herein, "equal" means a value within an acceptable range of deviation determined by one of ordinary skill in the art. For example, the spacing between the compensation routing portion C and the mth second touch routing 121-m is within ±5% of the spacing between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1, and the parallel distance between the compensation routing portion C and the mth second touch routing 121-m is within ±5% of the parallel distance between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1.

[0101] In an embodiment of the present disclosure, the spacing between the compensation routing portion C and the mth first touch routing 121-m is smaller than the spacing between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1, and the parallel distance between the compensation routing portion C and the mth first touch routing 121-m is smaller than the parallel distance between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1, so that the compensation capacitance generated between the compensation routing portion C and the mth first touch routing 121-m is basically equal to the parasitic capacitance generated between the mth first touch routing 121-m and the m-1th first touch routing 121-m-1. This setting method can reduce the area occupied by the compensation routing portion C.

[0102] In the embodiment of the present disclosure, referring to FIG2 , the touch structure includes multiple touch drive electrodes and multiple touch sensing electrodes. The first touch electrode portions 111a of the first touch electrode strips 111 serve as touch drive electrodes, and the first touch electrode strips 111 function as touch drive electrode strips. The second touch electrode portions 112a of the second touch electrode strips 112 serve as touch sensing electrodes, and the second touch electrode strips 112 function as touch sensing electrode strips. In other words, the touch traces electrically connected to the touch drive electrode strips are provided with the aforementioned compensation trace portions C.

[0103] In the embodiment of the present disclosure, referring to FIG2 , the touch structure includes multiple touch drive electrodes and multiple touch sensing electrodes. The first touch electrode portion 111a of the first touch electrode strip 111 serves as a touch sensing electrode, and the first touch strip 111 functions as a touch sensing electrode strip. The second touch electrode portion 112a of the second touch electrode strip 112 serves as a touch drive electrode, and the second touch electrode strip 112 functions as a touch drive electrode strip. In other words, the touch traces electrically connected to the touch drive electrode strips are provided with the aforementioned compensation trace portion C.

[0104] FIG5 schematically shows a cross-sectional view of a touch structure according to an embodiment of the present disclosure.

[0105] 5 , the touch structure 100 includes a first touch metal layer 100A, a touch insulating layer 100B, and a second touch metal layer 100C. The touch insulating layer 100B is located on the first touch metal layer 100A, and the second touch metal layer 100C is located on a side of the touch insulating layer 100B away from the first touch metal layer 100A.

[0106] With reference to FIG. 2 , typically, the first touch electrode portion 111a and the second touch electrode portion 112a are located in the second touch metal layer 100C. One of the first connecting portion 111b and the second connecting portion 112b is located in the second touch metal layer 100C, while the other is located in the first touch metal layer 100A. For example, the first connecting portion 111b is located in the second touch metal layer 100C, while the second connecting portion 112b is located in the first touch metal layer 100A. The first connecting portion 111b is directly connected to the first touch electrode portion 111a, while the second touch electrode portion 112a is connected to the second connecting portion 112b through a via in the touch insulation layer 100B.

[0107] In some optional implementations of this embodiment, the first touch trace 121 , the second touch trace 122 , and the third touch trace are located in the second touch metal layer 100C.

[0108] In some optional implementations of this embodiment, the first touch trace 121 , the second touch trace 122 , and the third touch trace are located in the first touch metal layer 100A.

[0109] In some optional implementations of this embodiment, the first touch trace 121, the second touch trace 122, and the third touch trace are located on the second touch metal layer 100C and the first touch metal layer 100A. That is, the first touch trace 121, the second touch trace 122, and the third touch trace are each composed of two layers of conductive traces located on the second touch metal layer 100C and the first touch metal layer 100A, overlapping and electrically connected. This parallel connection of the two layers of conductive traces reduces signal attenuation on the touch traces, optimizing the touch experience.

[0110] In the embodiment of the present disclosure, the compensation trace portion C is located on the same layer as the first touch trace 121 and the second touch trace 122. Specifically, when the first touch trace 121 and the second touch trace 122 are located in the second touch metal layer 100C, the compensation trace portion C is also located in the second touch metal layer 100C. When the first touch trace 121 and the second touch trace 122 are located in the first touch metal layer 100A, the compensation trace portion C is also located in the first touch metal layer 100A. When the first touch trace 121 and the second touch trace 122 are located in both the second touch metal layer 100C and the first touch metal layer 100A, the compensation trace portion C is also located in both the second touch metal layer 100C and the first touch metal layer 100A.

[0111] For example, the second touch metal layer 100C and the first touch metal layer 100A may be made of a metal material or an alloy material, and may be a single metal layer or a multi-layer metal stack. For example, the second touch metal layer 100C and the first touch metal layer 100A may both be made of a three-layer metal stack of titanium, aluminum, and titanium (Ti / Al / Ti).

[0112] FIG6 schematically shows a plan view of a display substrate according to an embodiment of the present disclosure; FIG7 schematically shows a cross-sectional view of a display substrate according to an embodiment of the present disclosure.

[0113] 6 , the display substrate includes a display area AA and a peripheral area NA located outside the display area AA. Referring to FIG7 , the display substrate includes a base substrate 200, a drive layer 300, a first electrode layer 410, a light-emitting layer 420, a second electrode layer 430, an encapsulation layer 500, and the touch structure 100 provided in the above-described embodiment. The drive layer 300 is located on the base substrate 200, the first electrode layer 410 is located on a side of the drive layer 300 away from the base substrate 200, the light-emitting layer 420 is located on a side of the first electrode layer 410 away from the drive layer 300, the second electrode layer 430 is located on a side of the light-emitting layer 420 away from the first electrode layer 410, the encapsulation layer 500 is located on a side of the second electrode layer 430 away from the light-emitting layer 420, and the touch structure 100 is located on a side of the encapsulation layer 500 away from the second electrode layer 430.

[0114] For example, the first touch electrode strips and the second touch electrode strips in the touch structure 100 are substantially located in the display area AA, and the first touch wiring, the second touch wiring, and the third touch wiring are substantially located in the peripheral area NA.

[0115] For example, the base substrate 200 may be a rigid substrate or a flexible substrate, wherein the flexible substrate may be a polyimide (PI) substrate, and the rigid substrate may be a glass substrate, but is not limited thereto.

[0116] For example, the first electrode layer 410 includes a plurality of spaced-apart first electrodes; the light-emitting layer 420 includes a plurality of spaced-apart light-emitting portions, with each light-emitting portion located on a first electrode; and the second electrode layer 430 is entirely disposed in the display area AA. A first electrode, a light-emitting portion located thereon, and the portion of the second electrode layer 430 located above the light-emitting portion constitute a light-emitting device.

[0117] For example, the driving layer 300 includes a plurality of switching elements, one switching element being electrically connected to the first electrode of a light emitting device to control the light emitting device to be turned on or off. The switching element 540 may be a thin film transistor.

[0118] For example, the material of the first electrode layer 410 may include at least one transparent conductive oxide material including indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), etc. In addition, the first electrode layer 410 may include a metal with high reflectivity as a reflective layer, such as silver (Ag).

[0119] For example, the material of the light-emitting layer 420 may include a small molecule organic material or a polymer molecule organic material, may be a fluorescent light-emitting material or a phosphorescent light-emitting material, and may emit red light, green light, blue light, or white light.

[0120] For example, the second electrode layer 430 may include various conductive materials, such as lithium (Li), aluminum (Al), magnesium (Mg), silver (Ag), or alloys thereof.

[0121] For example, functional layers such as a hole injection layer and a hole transport layer may be further included between the first electrode layer 410 and the light-emitting layer 420 ; functional layers such as an electron injection layer and an electron transport layer may be further included between the second electrode layer 430 and the light-emitting layer 420 .

[0122] For example, the encapsulation layer 500 covers and seals each light-emitting device, thereby reducing or preventing degradation of the light-emitting device caused by moisture or oxygen in the environment. The encapsulation layer 500 can be a single-layer structure or a composite layer structure including a stacked structure of an inorganic layer and an organic layer.

[0123] For example, the encapsulation layer 500 includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer that are sequentially stacked.

[0124] For example, the materials of the first and second inorganic encapsulation layers may include insulating materials such as silicon nitride, silicon oxide, and silicon oxynitride. Inorganic materials such as silicon nitride, silicon oxide, and silicon oxynitride have high density and can prevent the intrusion of water, oxygen, and the like. The material of the organic encapsulation layer may be a polymer material containing a desiccant or a polymer material that can block water vapor, such as a polymer resin, to planarize the surface of the display substrate and relieve stress in the first and second inorganic encapsulation layers. It may also include a desiccant or other water-absorbing material to absorb intrusive water, oxygen, and the like.

[0125] FIG8 schematically shows a plan view of a retaining wall in a display substrate according to an embodiment of the present disclosure; FIG9 schematically shows a cross-sectional view at the position BB′ in FIG8 .

[0126] 8 and 9 , the display substrate includes a retaining wall disposed on the base substrate 200 and located in the peripheral area. The retaining wall includes a first retaining wall Dam1 disposed around the display area and a second retaining wall Dam2 disposed around the first retaining wall Dam1. At least part of the touch wiring extends from a side of the second retaining wall Dam2 close to the display area AA to a side of the second retaining wall Dam2 away from the display area AA.

[0127] The height of the second retaining wall Dam2 is higher than that of the first retaining wall Dam1. Normally, the first retaining wall Dam1 includes a plurality of stacked first retaining wall portions, and the second retaining wall Dam2 includes a plurality of stacked second retaining wall portions. For example, the first retaining wall Dam1 includes three stacked first retaining wall portions, and the second retaining wall Dam2 includes four stacked second retaining wall portions.

[0128] For example, the display substrate includes a first planarization layer located on a base substrate, a second planarization layer located on a side of the first planarization layer away from the base substrate, a third planarization layer located on a side of the second planarization layer away from the base substrate, a fourth planarization layer located on a side of the third planarization layer away from the base substrate, and an isolation column layer located on a side of the fourth planarization layer away from the base substrate. The three first retaining wall portions are respectively located in any three of the first planarization layer, the second planarization layer, the third planarization layer, the fourth planarization layer, and the isolation column layer, and the four second retaining wall portions are respectively located in any four of the first planarization layer, the second planarization layer, the third planarization layer, the fourth planarization layer, and the isolation column layer.

[0129] For example, three first retaining wall portions are respectively located in the third planarization layer, the fourth planarization layer, and the isolation column layer, and four second retaining wall portions are respectively located in the second planarization layer, the third planarization layer, the fourth planarization layer, and the isolation column layer.

[0130] Since the height of the second retaining wall Dam2 is relatively high, the second retaining wall Dam2 forms a larger step difference compared to the base substrate 200. When the touch line crosses the second retaining wall Dam2, there is a risk that the portion of the touch line located at the edge of the upper surface of the second retaining wall Dam2 will break, which will cause the touch signal transmission to be interrupted and affect the touch sensitivity.

[0131] FIG. 10 schematically shows another cross-sectional view at the position BB′ in FIG. 8 .

[0132] In order to improve the above problems, the display substrate also includes a bridging routing portion, which is located on the side of the second retaining wall close to the base substrate or on the side of a part of the second retaining wall close to the base substrate. Referring to Figure 10, the display substrate also includes a bridging routing portion 301 located on a side of a part of the second retaining wall Dam2 close to the base substrate 200. For example, the second retaining wall Dam2 includes four stacked second retaining wall portions, and the bridging routing portion 301 is located between three second retaining wall portions away from the base substrate 200 and one second retaining wall portion close to the base substrate 200.

[0133] At least part of the touch trace 12 includes an inner touch trace portion 12X located on the side of the second barrier wall Dam2 closer to the display area AA, and an outer touch trace portion 12Y located on the side of the second barrier wall Dam2 farther from the display area AA. One end of the bridging trace portion 301 is electrically connected to the inner touch trace portion 12X, and the other end is electrically connected to the outer touch trace portion 12Y. In other words, the touch trace 12 is disconnected at the second barrier wall Dam2, and the disconnected portion is then reconnected via the bridging trace portion 301 located below the second barrier wall Dam2. Therefore, the touch trace 12 no longer needs to cross the upper surface of the second barrier wall Dam2, thereby avoiding the problem of the touch trace 12 being disconnected at the second barrier wall Dam2.

[0134] For example, the touch trace 12 is located in the second touch metal layer, and a touch insulation layer 100B is provided on the side of the touch trace 12 close to the base substrate. The inner touch trace portion 12X and the outer touch trace portion 12Y are respectively connected to the bridge trace portion 301 through vias on the touch insulation layer 100B to achieve electrical connection.

[0135] According to some exemplary embodiments, the display substrate further includes: a source-drain metal layer located on the base substrate 200; and a touch metal layer located on the side of the source-drain metal layer away from the base substrate 200, the bridging wiring portion 301 is located in the source-drain metal layer, and the inner touch wiring portion and the outer touch wiring portion are located in the touch metal layer.

[0136] It should be noted that the touch metal layer here is the first touch metal layer and / or the second touch metal layer in the aforementioned embodiment, which will not be described in detail in this embodiment.

[0137] For example, the driving layer 300 includes a first source-drain metal layer located on the base substrate 200, a second source-drain metal layer located on the side of the first source-drain metal layer away from the base substrate, and a third source-drain metal layer located on the side of the second source-drain metal layer away from the base substrate; the source-drain metal layer can be selected as any one of the first source-drain metal layer, the second source-drain metal layer and the third source-drain metal layer.

[0138] FIG11 schematically shows another cross-sectional view at the position BB′ in FIG8 .

[0139] Referring to Figure 11 , the display substrate further includes a raised portion 302 disposed adjacent to the second retaining wall Dam2. The raised portion 302 includes a first raised portion 302a located on the side of the second retaining wall Dam2 closer to the display area AA, and a second raised portion 302b located on the side of the second retaining wall Dam2 farther from the first raised portion 302a. At least a portion of the touch trace 12 extends across the second retaining wall Dam2 via the first raised portion 302a and to the second raised portion 302b. By providing the raised portions 302 on both sides of the second retaining wall Dam2, the touch trace 12 no longer directly crosses the step structure formed by the second retaining wall Dam2 and the base substrate 200. Instead, it crosses the step structure formed by the raised portion 302 and the base substrate 200, as well as the step structure formed by the second retaining wall Dam2 and the raised portion 302. The cushioning provided by the raised portions 302 significantly reduces the risk of breakage of the touch trace 12 located at the edge of the upper surface of the second retaining wall Dam2.

[0140] According to some exemplary embodiments, a side of the first raised portion 302a away from the second retaining wall Dam2 is directly connected to the first retaining wall Dam1.

[0141] According to some exemplary embodiments, the touch trace 12 is located in a touch metal layer, the display substrate further includes a planarization layer located on a side of the touch metal layer close to the base substrate, and the raised portion 302 is located in the planarization layer.

[0142] For example, the display substrate includes a second planarization layer located on a base substrate, a third planarization layer located on a side of the second planarization layer away from the base substrate, a fourth planarization layer located on a side of the third planarization layer away from the base substrate, and a spacer column layer located on a side of the fourth planarization layer away from the third planarization layer. The planarization layer can be any one of the second planarization layer, the third planarization layer, the fourth planarization layer, and the spacer column layer.

[0143] The inventors also discovered that etching residues can cause short circuits between two adjacent touch lines at the boundary of the organic insulating layer in the display substrate. Based on this problem, the inventors have developed effective improvements.

[0144] FIG12 schematically shows a plan view of a touch wiring located at a boundary of an organic insulating layer in a display substrate according to an embodiment of the present disclosure.

[0145] 12 , the display substrate includes an organic insulating layer 310 located on a side of the multiple touch traces close to the base substrate 200. The multiple touch traces 12 include a first trace portion 12M spanning a boundary 310a of the organic insulating layer 310 and second trace portions 12N located on both sides of the first trace portion 12M. FIG12 exemplarily shows a second trace portion 12N located on one side of the first trace portion 12M. It should be understood that, along the extension direction of each touch trace 12 in the second trace portion 12N, another second trace portion 12N is provided on a side of the first trace portion 12M away from the illustrated second trace portion 12N.

[0146] Two adjacent touch traces 12 in the first trace portion 12M have a first spacing, while two adjacent touch traces 12 in the second trace portion 12N have a second spacing, with the first spacing being greater than the second spacing. It has been demonstrated that increasing the spacing between touch traces in the first trace portion 12M effectively alleviates the problem of etching residue in the first trace portion 12M, thereby preventing the problem of adjacent touch traces in the first trace portion 12M from shorting.

[0147] It is additionally noted that, in order to achieve a first spacing greater than the second spacing, the line width of the touch trace 12 in the first trace portion 12M is set to be smaller than the line width of the touch trace 12 in the second trace portion 12N.

[0148] According to some exemplary embodiments, the first spacing is greater than or equal to 8 microns. For example, the first spacing is 8 microns, 8.5 microns, 9 microns, 9.5 microns, 10 microns, 11 microns, 12 microns, 13 microns, 14 microns, or 15 microns. Theoretically, the thicker the organic insulating layer 310 is and / or the steeper the tapered angle formed between the sidewalls and the bottom surface of the organic insulating layer 310, the larger the first spacing should be.

[0149] According to some exemplary embodiments, the display substrate includes: a first planarization layer located on a base substrate 200; a second planarization layer located on a side of the first planarization layer away from the base substrate 200; and a third planarization layer located on a side of the second planarization layer away from the base substrate 200; and the organic insulating layer includes at least one of the first planarization layer, the second planarization layer and the third planarization layer.

[0150] In the display substrate, there are touch signals transmitted by touch lines in the touch structure 100, and there are backplane (BP) signals for driving the display substrate in the driving layer 300, such as data (Data) signals and gate drive (GOA) signals. In order to avoid mutual interference between the touch signals and the backplane signals, it is usually necessary to set a signal shielding structure between the touch lines and the backplane signal lines in the driving layer 300.

[0151] According to some exemplary embodiments, referring to FIG. 6 and FIG. 7 , the display substrate includes a first electrode layer 410 located on a side of the light emitting layer 420 close to the base substrate 200 , and the peripheral area NA includes a corner area NA-C located outside a corner of the display area AA.

[0152] FIG13 schematically shows a plan view of touch wiring in a corner area of ​​a display substrate according to an embodiment of the present disclosure.

[0153] 13 , the display substrate includes a second electrode power signal bridge portion 411 located within the first electrode layer 410. The second electrode power signal bridge portion 411 includes a first exhaust hole H1. The second electrode power signal bridge portion 411 is located between the touch control structure 100 and the driving layer 300 and generally serves as the aforementioned signal shielding structure.

[0154] A portion of the second electrode signal bridging portion 411 is located in the corner area NA-C, and a portion of the touch trace 12 is located in the corner area NA-C; since a first exhaust hole H1 is provided on the second electrode power signal bridging portion 411, in the area of ​​the first exhaust hole H1, there is no structure that can achieve shielding between the touch trace and the backplane signal trace in the driving layer 300. Therefore, in the corner area NA-C, the orthographic projection of the touch trace 12 on the base substrate 200 does not coincide with the orthographic projection of the first exhaust hole H1 on the base substrate 200. For example, the orthographic projection of the touch trace 12 on the base substrate 200 and the orthographic projection of the first exhaust hole H1 on the base substrate 200 are arranged at intervals, or a portion of the edge of the orthographic projection of the touch trace 12 on the base substrate 200 is flush with a portion of the edge of the orthographic projection of the first exhaust hole H1 on the base substrate 200, that is, in the corner area NA-C, the touch trace 12 is arranged to avoid the first exhaust hole H1.

[0155] It should be noted that one or more planarization layers are usually provided on the side of the first electrode layer 410 close to the base substrate. The planarization layer PLN is often made of an organic resin material. The planarization layer contains some organic substances that are easily volatile when heated, such as organic solvents or small molecule materials. These organic substances are easily volatilized when heated during the subsequent manufacturing process of the display panel, causing the planarization layer to outgas. By providing the first exhaust hole H1 in the first electrode layer 410, the organic substances in the planarization layer are facilitated to volatilize when heated during the subsequent manufacturing process of the display substrate, thereby avoiding the accumulation of bubbles on the surface of the first electrode layer 410 facing the planarization layer. This is conducive to ensuring the process yield of the display substrate and thus ensuring a good display effect of the display substrate.

[0156] FIG14A schematically shows a plan view of touch wiring in a corner area of ​​a display substrate according to an embodiment of the present disclosure, and FIG14B schematically shows a cross-sectional view at position BB′ in FIG14A .

[0157] 7 and 14A and 14B, the display substrate further includes a source-drain metal layer located on the side of the first electrode layer 410 close to the base substrate 200, and the display substrate further includes a second electrode signal line L1 located in the source-drain metal layer; the second electrode signal line L1 is typically located on the side of the backplane signal line L2 in the driving layer 300 close to the touch line, so it can also serve as the above-mentioned signal shielding structure, a first insulating layer 320 is provided between the second electrode signal line L1 and the backplane signal line L2, and a second insulating layer 330 is provided between the second electrode signal line L1 and the second electrode signal bridge portion 411.

[0158] A portion of the second electrode signal line L1 is located in the corner area NA-C, and the second electrode signal line L1 includes a second exhaust hole H2. In the corner area NA-C, the orthographic projection of the first exhaust hole H1 on the base substrate 200 at least partially overlaps with the second exhaust hole H2 on the base substrate 200. In the overlapping area between the first exhaust hole H1 and the second exhaust hole H2, there is no structure that can achieve shielding between the touch line and the backplane signal line L2 in the driving layer 300.

[0159] Therefore, in the corner area NA-C, the orthographic projection of the touch trace 12 on the base substrate 200 is spaced apart from the orthographic projection of either the first exhaust hole H1 or the second exhaust hole H2 on the base substrate 200. That is, in the corner area NA-C, the touch trace 12 is arranged to avoid the first exhaust hole H1 and the second exhaust hole H2.

[0160] The purpose of setting the second exhaust hole H2 is similar to that of the first exhaust hole H1 and will not be described in detail here.

[0161] The second electrode power signal bridge portion 411 is electrically connected to the second electrode signal line and the second electrode layer 430 , respectively. The second electrode power signal bridge portion 411 is used to transmit the second electrode signal received from the second electrode signal line L1 to the second electrode layer 430 .

[0162] It should be supplemented that, in the corner area NA-C, the first exhaust hole H1 and the second exhaust hole H2 are at least partially overlapped in order to improve the yield rate of the glue coating process in the corner area NA-C.

[0163] According to some exemplary embodiments, the display substrate further includes a source-drain metal layer located on the side of the first electrode layer 410 close to the base substrate 200, and the display substrate further includes a second electrode signal line located in the source-drain metal layer; and the orthographic projection of the second electrode signal line on the base substrate 200 is spaced apart from the orthographic projection of the first exhaust hole H1 located in the corner area NA-C on the base substrate 200.

[0164] For example, referring to FIG13 , the second electrode signal line is located outside the corner area NA-C. Obviously, the orthographic projection of the second electrode signal line on the base substrate 200 is spaced apart from the orthographic projection of the first exhaust hole H1 located in the corner area NA-C on the base substrate 200.

[0165] For example, a portion of the second electrode signal line is located in the corner area NA-C, but the orthographic projection of the portion of the second electrode signal line located in the corner area NA-C on the base substrate 200 is spaced apart from the orthographic projection of the first exhaust hole H1 located in the corner area NA-C on the base substrate 200.

[0166] FIG15 schematically shows a plan view of touch wiring in a first side region of a display substrate according to an embodiment of the present disclosure.

[0167] 15 and 6 , the peripheral area NA further includes a first side area NA-D located on one side of the display area AA along the second direction Y. In the first side area NA-D, the orthographic projection of the first exhaust hole H1 on the base substrate 200 and the orthographic projection of the second exhaust hole H2 on the base substrate 200 are spaced apart.

[0168] In the first side area NA-D, since the first exhaust hole H1 and the second exhaust hole H2 are arranged at intervals, that is, the first exhaust hole H1 and the second exhaust hole H2 do not overlap, in the area where the first exhaust hole H1 is provided, the second electrode signal line L2 can serve as the above-mentioned signal shielding structure; and in the area where the second exhaust hole H2 is provided, the second electrode power signal bridge portion 411 can serve as the above-mentioned signal shielding structure.

[0169] Therefore, in the first side area NA-D, the touch trace 12 does not need to be arranged to avoid the first exhaust hole H1 and / or the second exhaust hole H2, that is, the orthographic projection of the touch trace 12 on the base substrate 200 at least partially overlaps with the orthographic projection of the first exhaust hole H1 on the base substrate 200; and / or, the orthographic projection of the touch trace 12 on the base substrate 200 at least partially overlaps with the orthographic projection of the second exhaust hole H2 on the base substrate 200.

[0170] It is additionally noted that, in the first side area NA-D, the glue coating process has a relatively high yield rate, and therefore, it is not necessary to arrange the first exhaust hole H1 and the second exhaust hole H2 to at least partially overlap.

[0171] In another aspect, a display device is provided, comprising the display substrate described above. The display device may be a display device such as a liquid crystal display, electronic paper, or an OLED (Organic Light-Emitting Diode) display, as well as any product or component with touch and display functions, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigation system, that includes such a display device.

[0172] It should be understood that the display devices according to some exemplary embodiments of the present disclosure have all the features and advantages of the above-mentioned display substrate. These features and advantages can be referred to in the above description of the display substrate and will not be repeated here.

[0173] As used herein, the terms "substantially," "about," "approximately," and other similar terms are used as terms of approximation rather than as terms of degree, and are intended to account for the inherent deviations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art. To account for factors such as process fluctuations, measurement problems, and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), "about" or "approximately," as used herein, are inclusive of the stated value and mean within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within ±10% or ±5% of the stated value.

[0174] Although some embodiments according to the general inventive concept of the present disclosure have been illustrated and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A touch structure, in, The touch structure includes a first touch area, a second touch area, a first touch wiring area and a second touch wiring area, the second touch area is located on one side of the first touch area along a first direction, the second touch wiring area is located on one side of the first touch wiring area along the first direction, and the touch structure includes: a plurality of first touch electrode strips extending along the second direction and arranged at intervals along the first direction, part of the first touch electrode strips being located in the first touch area, and the remaining part of the first touch electrode strips being located in the second touch area, and the first direction intersecting with the second direction; and A plurality of touch routing lines, including a first touch routing line group located in the first touch routing line area and a second touch routing line group located in the second touch routing line area, wherein the first touch routing line group includes m first touch routing lines, the first touch routing lines are electrically connected to the first touch electrode strips located in the first touch area, and two adjacent first touch routing lines are arranged in parallel; the second touch routing line group includes n second touch routing lines, the second touch routing lines are electrically connected to the first touch electrode strips located in the second touch area, and two adjacent second touch routing lines are arranged in parallel, wherein m and n are both integers greater than or equal to 2, Among them, the first touch routing group includes the mth first touch routing that is closest to the second touch routing group; the second touch routing group includes the nth second touch routing that is closest to the first touch routing group, and one of the mth first touch routing and the nth second touch routing includes a compensation routing portion, so that a portion of the mth first touch routing and the compensation routing portion in the nth second touch routing are arranged in parallel, or a portion of the nth second touch routing and the compensation routing portion in the mth first touch routing are arranged in parallel, thereby generating a compensation capacitance between the mth first touch routing and the nth second touch routing.

2. The touch control structure according to claim 1, in, The mth first touch line includes the compensation line portion, the compensation line portion extends from the first touch line area to the second touch line area, the compensation line portion and a portion of the nth second touch line are arranged in parallel, the second touch line group includes an n-1th second touch line adjacent to the nth second touch line, and the compensation line portion is located on a side of the nth second touch line away from the n-1th second touch line; or The nth second touch line includes the compensation line portion, the compensation line portion extends from the second touch line area to the first touch line area, the compensation line portion and a portion of the mth first touch line are arranged in parallel, and the first touch line group includes the m-1st touch line adjacent to the mth first touch line. The compensation wiring portion is located at a side of the m-th first touch wiring away from the (m-1)-th first touch wiring.

3. The touch control structure according to claim 2, in, The compensation capacitance generated between the compensation wiring portion and the nth second touch wiring is substantially equal to the parasitic capacitance generated between the nth second touch wiring and the n-1th second touch wiring; or The compensation capacitance generated between the compensation wiring portion and the mth first touch wiring is substantially equal to the parasitic capacitance generated between the mth first touch wiring and the m-1th first touch wiring.

4. The touch control structure according to claim 2 or 3, in, The spacing between the compensation wiring portion and the nth second touch wiring is equal to the spacing between the nth second touch wiring and the n-1th second touch wiring, and the parallel distance between the compensation wiring portion and the nth second touch wiring is equal to the parallel distance between the nth second touch wiring and the n-1th second touch wiring; or The spacing between the compensation routing portion and the mth first touch routing is equal to the spacing between the mth first touch routing and the m-1th first touch routing, and the parallel distance between the compensation routing portion and the mth first touch routing is equal to the parallel distance between the mth first touch routing and the m-1th first touch routing.

5. The touch control structure according to claim 2 or 3, in, The spacing between the compensation wiring portion and the nth second touch wiring is smaller than the spacing between the nth second touch wiring and the n-1th second touch wiring, and the parallel distance between the compensation wiring portion and the nth second touch wiring is smaller than the parallel distance between the nth second touch wiring and the n-1th second touch wiring; or The spacing between the compensation routing portion and the mth first touch routing is smaller than the spacing between the mth first touch routing and the m-1th first touch routing, and the parallel distance between the compensation routing portion and the mth first touch routing is smaller than the parallel distance between the mth first touch routing and the m-1th first touch routing.

6. The touch control structure according to any one of claims 1 to 5, in, The touch structure includes a plurality of touch driving electrodes and a plurality of touch sensing electrodes, one of the first touch electrode strips includes a plurality of the touch driving electrodes arranged in sequence and electrically connected along the second direction, or one of the first touch electrode strips includes a plurality of the touch sensing electrodes arranged in sequence and electrically connected along the second direction.

7. The touch control structure according to any one of claims 1 to 6, in, The compensation wiring portion and the first touch wiring group and the second touch wiring group are located on the same layer.

8. A display substrate, in, The display substrate comprises a display area and a peripheral area located outside the display area, and the display substrate comprises: substrate substrate; A light emitting layer located on the substrate; An encapsulation layer located on a side of the light-emitting layer away from the substrate; A touch control structure located on a side of the packaging layer away from the substrate, wherein the touch control structure comprises the touch control structure according to any one of claims 1 to 7.

9. The display substrate according to claim 8, in, The display substrate includes a retaining wall arranged on the base substrate and located in the peripheral area, the retaining wall includes a first retaining wall arranged around the display area and a second retaining wall arranged around the first retaining wall, and at least part of the touch wiring extends from a side of the second retaining wall close to the display area to a side of the second retaining wall away from the display area.

10. The display substrate according to claim 9, in, The display substrate also includes a bridging wiring portion, which is located on a side of the second retaining wall close to the base substrate or on a side of a part of the second retaining wall close to the base substrate, at least part of the touch wiring includes an inner touch wiring portion located on a side of the second retaining wall close to the display area and an outer touch wiring portion located on a side of the second retaining wall away from the display area, one end of the bridging wiring portion is electrically connected to the inner touch wiring portion and the other end is electrically connected to the outer touch wiring portion.

11. The display substrate according to claim 10, in, The display substrate also includes: a source-drain metal layer located on the base substrate; and a touch metal layer located on a side of the source-drain metal layer away from the base substrate, the bridging wiring portion is located on the source-drain metal layer, and the inner touch wiring portion and the outer touch wiring portion are located on the touch metal layer.

12. The display substrate according to any one of claims 9 to 11, in, The display substrate also includes a raised portion arranged adjacent to the second retaining wall, the raised portion includes a first raised portion located on a side of the second retaining wall close to the display area and a second raised portion located on a side of the second retaining wall away from the first raised portion, at least part of the touch lines pass through the first raised portion, cross the second retaining wall and extend to the second raised portion.

13. The display substrate according to claim 12, in, The touch control wiring is located in a touch control metal layer, the display substrate further comprises a planarization layer located on a side of the touch control metal layer close to the base substrate, and the padding portion is located in the planarization layer.

14. The display substrate according to any one of claims 8 to 13, in, The display substrate includes an organic insulating layer located on a side of the multiple touch lines close to the base substrate, and the multiple touch lines include a first routing portion crossing a boundary of the organic insulating layer and a second routing portion located on both sides of the first routing portion, two adjacent touch lines in the first routing portion have a first spacing, and two adjacent touch lines in the second routing portion have a second spacing, and the first spacing is greater than the second spacing.

15. The display substrate according to claim 14, in, The first spacing is greater than or equal to 8 micrometers.

16. The display substrate according to claim 14 or 15, in, The display substrate comprises: a first planarization layer located on the base substrate; a second planarization layer located on a side of the first planarization layer away from the base substrate; and a third planarization layer located on a side of the second planarization layer away from the base substrate; and The organic insulating layer includes at least one of a first planarization layer, a second planarization layer, and a third planarization layer.

17. The display substrate according to any one of claims 8 to 16, in, The display substrate comprises a first electrode layer located on a side of the light-emitting layer close to the base substrate, and the peripheral area comprises a corner area located outside the corner of the display area; the display substrate comprises a power signal bridge portion located in the first electrode layer, and the second electrode power signal bridge portion comprises a first exhaust hole; A portion of the second electrode signal bridge portion is located in the corner area, and a portion of the touch control wiring is located in the corner area; as well as In the corner area, the orthographic projection of the touch line on the substrate is aligned with the first exhaust hole. The orthographic projections on the substrate do not overlap.

18. The display substrate according to claim 17, in, The display substrate further comprises a source-drain metal layer located on a side of the first electrode layer close to the base substrate, and the display substrate further comprises a second electrode signal wiring located in the source-drain metal layer; A portion of the second electrode signal wiring is located in the corner area, and the second electrode signal wiring includes a second exhaust hole; and In the corner area, the orthographic projection of the first exhaust hole on the base substrate at least partially overlaps with the orthographic projection of the second exhaust hole on the base substrate, and in the corner area, the orthographic projection of the touch line on the base substrate is spaced apart from the orthographic projection of either the first exhaust hole or the second exhaust hole on the base substrate.

19. The display substrate according to claim 17, in, The display substrate further includes a source-drain metal layer located on a side of the first electrode layer close to the base substrate, and the display substrate further includes a second electrode signal wiring located in the source-drain metal layer; and The orthographic projection of the second electrode signal wiring on the base substrate is spaced apart from the orthographic projection of the first exhaust hole located in the corner area on the base substrate.

20. The display substrate according to claim 18 or 19, in, The peripheral area further includes a first side area located on one side of the display area along the second direction, in which an orthographic projection of the first exhaust hole on the base substrate is spaced apart from an orthographic projection of the second exhaust hole on the base substrate; as well as In the first side region, an orthographic projection of the touch control trace on the base substrate at least partially overlaps with an orthographic projection of the first exhaust hole on the base substrate; And / or, an orthographic projection of the touch control trace on the base substrate at least partially overlaps with an orthographic projection of the second exhaust hole on the base substrate.

21. A display device, in, The display device comprises a display substrate according to any one of claims 8-20.

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