Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a substrate, a touch wire and a first insulating layer, wherein the touch wire is arranged between the substrate and the first insulating layer. The first insulating layer comprises a main body part and an auxiliary part which are connected, the main body part surrounds to form a plurality of first openings arranged at intervals, and the auxiliary part is located in the first openings. In the thickness direction of the substrate, the main body part covers the touch control wire, and the auxiliary part is not overlapped with the touch control wire. Therefore, according to the display panel and the display device provided by the invention, the failure risk of the touch wire can be reduced.

Description

Technical Field

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

[0002] OLED (Organic Light Emitting Diode) display panel has many advantages such as full solid state, active light emission, fast response speed, high contrast, no viewing angle limitation and flexible display. It is a new display technology developed in the mid-twentieth century and is widely used in people's daily production and life. In the related technology, the display panel includes a substrate and a touch line, and the touch line is arranged on one side of the substrate. However, the above touch line is prone to touch failure. Summary of the invention

[0003] Based on this, the present application proposes a display panel and a display device, which can reduce the failure risk of touch wiring.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising a substrate, a touch line and a first insulating layer, wherein the touch line is arranged between the substrate and the first insulating layer. The first insulating layer comprises a main body portion and an auxiliary portion connected to each other, wherein the main body portion surrounds a plurality of first openings arranged at intervals, and the auxiliary portion is located within the first opening. In the thickness direction of the substrate, the main body portion covers the touch line, and the auxiliary portion does not overlap with the touch line.

[0005] The display panel provided in the embodiment of the present application, compared with only providing a main part, has a larger total area of ​​the main part and the auxiliary part by providing an auxiliary part, which is beneficial to improving the connection stability between the first insulating layer and the substrate. The first insulating layer and the substrate are not easy to peel off, so that the first insulating layer can always form a good coverage for the touch wiring, making it difficult for the touch wiring and the substrate to peel off, which is beneficial to ensuring the touch performance of the touch wiring and reducing the failure risk of the touch wiring.

[0006] In a second aspect, based on the same inventive concept, an embodiment of the present application provides a display device, and the display device includes the display panel provided in the first aspect.

[0007] The display device provided in the embodiment of the present application includes a display panel. Compared with only setting a main part, the total area of ​​the main part and the auxiliary part is larger by setting an auxiliary part, which is beneficial to improving the connection stability between the first insulating layer and the substrate. The first insulating layer and the substrate are not easy to peel off, so that the first insulating layer can always form a good coverage for the touch wiring, and the touch wiring and the substrate are not easy to peel off, which is beneficial to ensuring the touch performance of the touch wiring and reducing the failure risk of the touch wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A top view of a display panel provided in an embodiment of the present application.

[0009] Figure 2 for Figure 1 A partial schematic diagram of .

[0010] Figure 3 for Figure 1 AA section view.

[0011] Figure 4 for Figure 1 BB section view.

[0012] Figure 5 Another top view of the display panel provided in an embodiment of the present application.

[0013] Figure 6 for Figure 5 A partial schematic diagram of .

[0014] Figure 7 This is a cross-sectional view of the substrate, the second insulating layer and the touch wiring provided in an embodiment of the present application.

[0015] Figure 8 for Figure 5 CC section view.

[0016] Fig. 9 Another cross-sectional view of the substrate, the second insulating layer and the touch wiring provided in the embodiment of the present application.

[0017] Fig.10 A cross-sectional view of a display panel provided in an embodiment of the present application.

[0018] Fig.11 Another cross-sectional view of the display panel provided in an embodiment of the present application.

[0019] Fig.12 Another cross-sectional view of the display panel provided in an embodiment of the present application.

[0020] Fig.13 A partially enlarged schematic diagram of the light extraction component provided in an embodiment of the present application.

[0021] 100, display panel; 101, substrate; 102, touch line; 110, first insulating layer; 111, first opening; 1111, first side wall; 112, main body; 1121, first surface; 113, auxiliary part; 1132, second surface; 1132a, first end; 1132b, second end; 114, notch; 120, second insulating layer; 131, first interlocking part; 1311, first sub-interlocking part; 1313, third sub-interlocking part; 132, second interlocking part; 1322, second sub-interlocking part; 1324, fourth sub-interlocking part; 140, light extraction element; 143, third surface; 144, fourth surface. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0025] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0026] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0027] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0028] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0029] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0030] It is obvious to those skilled in the art that various modifications and changes can be made in this application without departing from the spirit or scope of this application. Therefore, this application is intended to cover modifications and changes of this application that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0031] As described in the background technology section, in the related art, the display panel includes a substrate and a touch line, the touch line is arranged on one side of the substrate, and an optically transparent adhesive with a high refractive index is arranged on the side of the touch line away from the substrate, and the optically transparent adhesive covers the surface of the touch line away from the substrate and the side wall of the touch line. However, the width of the optically transparent adhesive is the same everywhere along the extension direction perpendicular to the touch line, and the width is about 5μm, which makes the width of the optically transparent adhesive small. The contact area between the optically transparent adhesive and the underlying film layer is small, so that the connection stability between the optically transparent adhesive and the substrate is poor, the optically transparent adhesive and the underlying film layer are easy to peel off, and the optically transparent adhesive and the substrate are easy to peel off, resulting in the optically transparent adhesive failing to form a good coverage of the touch line, making it easier to peel off the touch line and the substrate, thereby causing adverse effects on the touch performance of the touch line, and even causing the touch line to fail.

[0032] Based on the above technical problems, the inventors have found that by setting the first insulating layer on the side of the touch line away from the substrate, wherein the first insulating layer includes a main body and an auxiliary part connected to each other, the main body is surrounded by a plurality of first openings arranged at intervals, and the auxiliary part is located on the side of the main body facing the first opening; in the thickness direction of the substrate, the main body covers the touch line, and the auxiliary part does not overlap with the touch line. In this way, compared with only setting the main body, by setting the auxiliary part, the total area of ​​the main body and the auxiliary part is larger, which is conducive to improving the connection stability between the first insulating layer and the substrate, and the first insulating layer and the substrate are not easy to peel off, so that the first insulating layer can always form a good coverage for the touch line, so that the touch line and the substrate are not easy to peel off, which is conducive to ensuring the touch performance of the touch line and reducing the failure risk of the touch line.

[0033] The above is the core idea of ​​the present application. The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Figure 1-13 The display device provided in the embodiment of the present application is described.

[0034] This embodiment provides a display device, which may include the display panel 100 in any of the following embodiments. Therefore, the display device also has the beneficial effects of the display panel 100 in the following embodiments, and the similarities can be understood by referring to the explanation of the display panel 100 below, which will not be repeated here.

[0035] In some embodiments, the display device can be a mobile phone or any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present application do not specifically limit this.

[0036] In some implementations, the display panel 100 may include an organic light emitting diode display panel (OLED), a quantum dot light emitting diode display panel (QLED), a mini light emitting diode display (Mini LED), or a micro light emitting diode display (Micro LED). The present application embodiment takes the display panel 100 as an OLED display panel as an example for description.

[0037] See also Figure 1and Figure 3 , the display panel 100 may have a first direction X, a second direction Y and a third direction Z, and the first direction X, the second direction Y and the third direction Z are all different. The first direction X and the second direction Y may be any two different directions parallel to the display panel 100, and the third direction Z may be any direction intersecting with a plane parallel to the display panel 100. For example, the first direction X, the second direction Y and the third direction Z may be perpendicular to each other. Exemplarily, the first direction X may be the length direction of the display panel 100, the second direction Y may be the width direction of the display panel 100, and the third direction Z may be the thickness direction of the display panel 100. The length, width and thickness in the embodiments of the present application are merely for the convenience of description and do not imply any limitation on the size. For example, the width may be greater than, equal to or less than the length.

[0038] The present application embodiment provides a display panel 100, see Figure 3 and Figure 4 The display panel 100 may include a substrate 101 and a touch line 102 located on one side of the substrate 101. The substrate 101 may provide support for the remaining structural layers that are subsequently provided. The touch line 102 may be used to implement a touch function.

[0039] See also Figure 2 and Figure 3 , the display panel 100 may include a first insulating layer 110, and the first insulating layer 110 is disposed on the side of the touch line 102 away from the substrate 101. The first insulating layer 110 may include a main body 112 and an auxiliary part 113 connected to each other, the main body 112 surrounds a plurality of first openings 111 arranged at intervals, and the auxiliary part 113 is located on the side of the main body 112 facing the first openings 111, that is, the auxiliary part 113 is located in the first openings 111. In the thickness direction of the substrate 101 (that is, the third direction Z), the main body 112 covers the touch line 102 (at the corresponding position), and the auxiliary part 113 does not overlap with the touch line 102 (at the corresponding position). In this way, by providing the main body 112 to cover the side of the touch line 102 away from the substrate 101 and the side wall of the touch line 102, the touch line 102 is prevented from being exposed, and by providing the auxiliary part 113, the total area of ​​the main body 112 and the auxiliary part 113 is larger, which is conducive to improving the connection stability between the first insulating layer 110 and the substrate 101, making it difficult for the first insulating layer 110 and the substrate 101 to peel off, so that the first insulating layer 110 can always form a good coverage for the touch line 102, making it difficult for the touch line 102 and the substrate 101 to peel off, which is conducive to ensuring the touch performance of the touch line 102 and reducing the failure risk of the touch line 102. For example, the auxiliary part 113 and the first opening 111 can be provided correspondingly, and the auxiliary part 113 can be located in the corresponding first opening 111.

[0040] The main body 112 surrounds and forms a plurality of first openings 111 that are spaced apart from each other. Along the circumference of the first openings 111, the first openings 111 may be closed openings, or the first openings 111 may be unclosed openings. Figure 2 In the same first opening 111, when the first opening 111 is a closed opening along the circumference of the first opening 111, it is equivalent to that the main body 112 encloses and forms a plurality of first openings 111 arranged at intervals. Figure 5 and Figure 6 In the same first opening 111, along the circumference of the first opening 111, when the first opening 111 is an unclosed opening, a notch 114 may be further provided on the first insulating layer 110, and the notch 114 may connect two adjacent first openings 111, and a notch 114 may be provided between at least part of two adjacent first openings 111, wherein it should be noted that at the notch 114, there may be a touch line that is not covered by the first insulating layer.

[0041] Exemplarily, the material of the first insulating layer 110 may include optically transparent adhesive.

[0042] In some embodiments, see Figure 3 The display panel 100 further includes a second insulating layer 120 , and the second insulating layer 120 is located between the touch wiring 102 and the substrate 101 .

[0043] In some embodiments, the second insulating layer 120 may include a first sub-insulating layer, which may be an inorganic encapsulation layer. A light-emitting device layer is arranged between the substrate 101 and the first sub-insulating layer. The first sub-insulating layer can prevent water, oxygen, etc. from invading the light-emitting device layer, thereby forming encapsulation protection for the light-emitting device layer.

[0044] In some embodiments, the second insulating layer 120 may include a second sub-insulating layer, which is located on the side of the first sub-insulating layer away from the substrate 101. The second sub-insulating layer may be a buffer layer, which may be formed of an inorganic material or an organic material. The buffer layer may be used to prevent subsequent etching from damaging the first sub-insulating layer, thereby improving the packaging effect of the display panel 100.

[0045] In some embodiments, the second insulating layer 120 may include a third sub-insulating layer, the third sub-insulating layer is located on a side of the second sub-insulating layer away from the substrate 101, and the material of the third sub-insulating layer may include an inorganic material. The display panel 100 may also include an auxiliary touch line, the touch line 102 may be located on a side of the auxiliary touch line away from the substrate 101, and the third sub-insulating layer is disposed between the touch line 102 and the auxiliary touch line.

[0046] In some other implementations, the display panel 100 may include only the touch wiring 102 without providing the auxiliary touch wiring. The embodiment of the present application is described by taking the example of providing both the touch wiring 102 and the auxiliary touch wiring. One of the auxiliary touch wiring and the touch wiring 102 is a bridge layer, and the other of the auxiliary touch wiring and the touch wiring 102 may be a touch function layer. The embodiment of the present application is described by taking the example of the auxiliary touch wiring as the bridge layer and the touch wiring 102 as the touch function layer.

[0047] Exemplarily, a material of at least one of the first sub-insulating layer, the second sub-insulating layer, and the third sub-insulating layer includes at least one of silicon nitride, silicon oxide, and silicon oxynitride.

[0048] The first engaging portion 131 and the second engaging portion 132 provided in the embodiment of the present application are described below.

[0049] In some embodiments, see Figure 10-12 A first embedding portion 131 is provided on the side of the first insulating layer 110 facing the substrate 101, and a second embedding portion 132 is provided on the side of the second insulating layer 120 facing away from the substrate 101, that is, a first embedding portion 131 is provided on the side of the first insulating layer 110 facing the second insulating layer 120, and a second embedding portion 132 is provided on the side of the second insulating layer 120 facing the first insulating layer 110, and the first embedding portion 131 and the second embedding portion 132 are embedded with each other. In this way, by providing the first interlocking portion 131 and the second interlocking portion 132 that cooperate with each other, the contact area between the first insulating layer 110 and the second insulating layer 120 can be increased, which is beneficial to improving the connection stability between the first insulating layer 110 and the second insulating layer 120, so as to improve the connection stability between the first insulating layer 110 and the substrate 101, so that the first insulating layer 110 and the substrate 101 are not easy to peel off, so that the first insulating layer 110 can always form a good coverage for the touch wiring 102, so that the touch wiring 102 and the substrate 101 are not easy to peel off, which is beneficial to ensuring the touch performance of the touch wiring 102 and reducing the failure risk of the touch wiring 102.

[0050] In some embodiments, see Fig.10 and Fig.11The first interlocking portion 131 includes a first sub-interlocking portion 1311, which is arranged on the auxiliary portion 113. The first sub-interlocking portion 1311 is arranged on the side of the auxiliary portion 113 facing the second insulating layer 120. The second interlocking portion 132 includes a second sub-interlocking portion 1322, which is arranged on the second insulating layer 120 corresponding to the auxiliary portion 113. The first sub-interlocking portion 1311 and the second sub-interlocking portion 1322 are interlocked with each other. In this way, by setting the first sub-embedded portion 1311 and the second sub-embedded portion 1322, the contact area between the first insulating layer 110 and the second insulating layer 120 can be increased, which is beneficial to improving the connection stability between the first insulating layer 110 and the second insulating layer 120, so as to improve the connection stability between the first insulating layer 110 and the substrate 101, so that the first insulating layer 110 and the substrate 101 are not easy to peel off, so that the first insulating layer 110 can always form a good coverage for the touch wiring 102, so that the touch wiring 102 and the substrate 101 are not easy to peel off, which is beneficial to ensuring the touch performance of the touch wiring 102 and reducing the failure risk of the touch wiring 102.

[0051] In some embodiments, see Fig.12 The first embedding portion 131 includes a third sub-embedding portion 1313, which is disposed on the main body 112, and the third sub-embedding portion 1313 is disposed on the side of the main body 112 facing the second insulating layer 120. The second embedding portion 132 includes a fourth sub-embedding portion 1324, and the fourth sub-embedding portion 1324 is disposed on the second insulating layer 120 corresponding to the main body 112, and the third sub-embedding portion 1313 and the fourth sub-embedding portion 1324 are mutually embedded. In this way, by providing the third sub-embedding portion 1313 and the fourth sub-embedding portion 1324 that cooperate with each other, the contact area between the first insulating layer 110 and the second insulating layer 120 can be increased, so that the touch wiring 102 and the substrate 101 are not easily peeled off, which is conducive to ensuring the touch performance of the touch wiring 102 and reducing the failure risk of the touch wiring 102. The principle has been explained and will not be repeated.

[0052] The first embedding portion 131 may include at least one of a first sub-embedded portion 1311 and a third sub-embedded portion 1313, and the second embedding portion 132 may include at least one of a second sub-embedded portion 1322 and a fourth sub-embedded portion 1324. In the embodiment where the first embedding portion 131 includes both the first sub-embedded portion 1311 and the third sub-embedded portion 1313, and the second embedding portion 132 includes both the second sub-embedded portion 1322 and the fourth sub-embedded portion 1324, the contact area between the first insulating layer 110 and the second insulating layer 120 may be larger, which is more conducive to ensuring the touch performance of the touch wiring 102 and reducing the failure risk of the touch wiring 102.

[0053] In the embodiment where the auxiliary portion 113 is provided with the first sub-embedded portion 1311, the number of the first sub-embedded portion 1311 on the same auxiliary portion 113 may be at least one. Fig.11 When there are multiple first sub-embedded portions 1311 on the same auxiliary portion 113, the multiple first sub-embedded portions 1311 can be arranged at intervals, and correspondingly, multiple second sub-embedded portions 1322 are arranged on the part of the second insulating layer 120 corresponding to the auxiliary portion 113, the first sub-embedded portion 1311 and the second sub-embedded portion 1322 are arranged correspondingly, and the first sub-embedded portion 1311 and the corresponding second sub-embedded portion 1322 are mutually embedded. In this way, by providing multiple first sub-embedded portions 1311 and multiple second sub-embedded portions 1322 that cooperate with each other, the contact area between the first insulating layer 110 and the second insulating layer 120 can be increased, so that the touch wiring 102 and the substrate 101 are not easily peeled off, which is conducive to ensuring the touch performance of the touch wiring 102 and reducing the failure risk of the touch wiring 102. The principle has been explained and will not be repeated.

[0054] In an embodiment where a plurality of first sub-embedded portions 1311 are disposed on the auxiliary portion 113 , the plurality of first sub-embedded portions 1311 may be arranged at intervals along a direction from the main portion 112 to the auxiliary portion 113 .

[0055] See also Fig.12 In the embodiment where the third sub-embedded portion 1313 is provided on the main body 112, the number of the third sub-embedded portion 1313 may be at least one. When the number of the third sub-embedded portion 1313 is plural, correspondingly, a plurality of fourth sub-embedded portions 1324 are provided on the portion of the second insulating layer 120 corresponding to the main body 112, and the third sub-embedded portion 1313 and the fourth sub-embedded portion 1324 are provided correspondingly, and the third sub-embedded portion 1313 and the corresponding fourth sub-embedded portion 1324 are interlocked with each other.

[0056] In some embodiments, one of the first embedding portion 131 and the second embedding portion 132 is a groove, and the other of the first embedding portion 131 and the second embedding portion 132 is a protrusion, and the groove and the protrusion are embedded with each other. In an embodiment in which a first sub-embedded portion 1311 and a second sub-embedded portion 1322 are provided, the first sub-embedded portion 1311 can be a groove, and the second sub-embedded portion 1322 can be a protrusion, or the first sub-embedded portion 1311 can be a protrusion, and the second sub-embedded portion 1322 can be a groove. In an embodiment in which a third sub-embedded portion 1313 and a fourth sub-embedded portion 1324 are provided, the third sub-embedded portion 1313 can be a groove, and the fourth sub-embedded portion 1324 can be a protrusion, or the third sub-embedded portion 1313 can be a protrusion, and the fourth sub-embedded portion 1324 can be a groove.

[0057] See also Fig. 9 and Fig.10 Taking the second engaging portion 132 as a groove as an example, a groove is first formed on the second insulating layer 120, and then the first insulating layer 110 is formed. Part of the first insulating layer 110 extends into the groove and forms a protrusion. The depression and the protrusion are engaged with each other, so that the contact area between the first insulating layer 110 and the second insulating layer 120 becomes larger, the film adhesion between the two becomes stronger, and the two are not easy to peel off, so as to ensure that the first insulating layer 110 can always cover the touch wiring 102, so that the touch wiring 102 is not easy to peel off, which is beneficial to ensuring the touch performance of the touch wiring 102 and reducing the failure risk of the touch wiring 102. The principle has been explained and will not be repeated here.

[0058] For example, see Fig.12 The notch size of the groove is smaller than the size of the bottom wall of the groove. Correspondingly, on the protrusion that is mutually engaged with the groove, the size of the protrusion close to the notch of the groove is smaller than the size of the protrusion close to the bottom wall of the groove. In this way, the notch size of the groove is smaller, which can limit the protrusion along the thickness direction of the substrate 101 and prevent the protrusion and the groove from separating, thereby improving the connection stability of the first insulating layer 110 and the second insulating layer 120, so that the touch wiring 102 is not easy to peel off from the substrate 101, which is beneficial to ensuring the touch performance of the touch wiring 102 and reducing the failure risk of the touch wiring 102. The principle has been explained and will not be repeated here.

[0059] Exemplarily, the opening size of the groove gradually decreases from the bottom wall of the groove to the groove mouth, that is, along the cross-section perpendicular to the thickness direction of the substrate 101, the cross-sectional area of ​​the groove gradually decreases from the bottom wall of the groove to the groove mouth, and the groove side wall of the groove can be an inclined wall or an arc wall, so that the opening size of the groove changes slowly from the bottom wall of the groove to the groove mouth, which is beneficial to reduce the difficulty of preparing the groove.

[0060] Exemplarily, the depth of the groove ranges from 0.3 μm to 0.5 μm, that is, the size of the groove along the thickness direction of the substrate 101 ranges from 0.3 μm to 0.5 μm, so that the depth of the groove can be prevented from being too small, which is beneficial to increase the contact area between the first insulating layer 110 and the second insulating layer 120. In addition, the groove depth can be prevented from being too large to affect the packaging effect of the second insulating layer 120 on the light-emitting device layer. For example, the depth of the groove can be 0.3 μm, 0.35 μm, 0.4 μm, 0.45 μm, 0.5 μm, or any value between 0.3 μm and 0.5 μm.

[0061] It should be noted that see Figure 7 and Figure 8 , the display panel 100 may not be provided with the first embedding portion 131 and the second embedding portion 132 , so that the preparation process of the second insulating layer 120 may be simplified.

[0062] In some embodiments, the surface of the second insulating layer 120 facing away from the substrate 101 is a rough surface, that is, the side of the second insulating layer 120 in contact with the first insulating layer 110 is a rough surface. The rough surface is beneficial to increasing the contact area between the first insulating layer 110 and the second insulating layer 120, so that the touch line 102 and the substrate 101 are not easily peeled off, which is beneficial to ensuring the touch performance of the touch line 102 and reducing the failure risk of the touch line 102. The principle has been explained and will not be repeated here.

[0063] Exemplarily, the roughness of the rough surface is in the range of 5nm-10nm, so that the roughness of the rough surface can be avoided from being too small, which is beneficial to increase the contact area between the first insulating layer 110 and the second insulating layer 120. In addition, the roughness of the rough surface can be avoided from being too large, which is beneficial to reduce the adverse effect of the rough surface on the preparation of the touch wiring 102. For example, the roughness of the rough surface can be 5nm, 6nm, 7nm, 8nm, 9nm, 10nm or any value between 5nm-10nm.

[0064] In some embodiments, see Figure 2 and Figure 6 , the side wall of the first opening 111 includes a plurality of first side walls 1111 connected end to end in sequence, and the extension directions of two adjacent first side walls 1111 are different. That is, the outer contour of the orthographic projection of the first opening 111 on the substrate 101 includes a plurality of first side edges, and the plurality of first side edges are arranged along the circumference of the first opening 111, and two adjacent first side edges are connected, and the extension directions of two adjacent first side edges are different. Among them, at least one first side wall 1111 is correspondingly provided with an auxiliary portion 113 on the side facing the first opening 111. In the same first opening 111, a part of the first side walls 1111 are correspondingly provided with an auxiliary portion 113 on the side facing the first opening 111, and another part of the first side walls 1111 are not provided with the auxiliary portion 113 on the side facing the first opening 111. Alternatively, in the same first opening 111, all the first side walls 1111 are correspondingly provided with an auxiliary portion 113 on the side facing the first opening 111.

[0065] In some embodiments, see Figure 2In the corresponding first side wall 1111 and auxiliary part 113, the width of the auxiliary part 113 along the extension direction perpendicular to the first side wall 1111 is a first width W1, and the first width W1 gradually increases from the center to the edge of the extension direction of the first side wall 1111, which is beneficial to increase the area of ​​the auxiliary part 113 and the contact area between the first insulating layer 110 and the second insulating layer 120, so that the touch line 102 is not easy to peel off from the substrate 101, which is beneficial to ensure the touch performance of the touch line 102 and reduce the failure risk of the touch line 102. The principle has been explained and will not be repeated here.

[0066] In some embodiments, see Figure 6 In the corresponding first side wall 1111 and auxiliary portion 113, the width of the auxiliary portion 113 along the extension direction perpendicular to the first side wall 1111 is a first width W1, and the first width W1 is the same everywhere along the extension direction of the first side wall 1111, so that the shape of the first side wall 1111 is relatively simple, which is conducive to reducing the difficulty of preparing the first opening 111.

[0067] In some embodiments, see Figure 3 and 10 The surface of the main body 112 facing away from the substrate 101 is the first surface 1121. The first surface 1121 is a curved surface. The first surface 1121 is protruded in the direction away from the substrate 101, so that the area of ​​the first surface 1121 is larger, which is beneficial to increase the contact area between the first surface 1121 and the film layer subsequently formed on the first surface 1121, thereby improving the connection stability between the first surface 1121 and the film layer subsequently formed on the first surface 1121.

[0068] In some embodiments, see Figure 3 The auxiliary part 113 includes a second surface 1132, the first surface 1121 of the main part 112 and the second surface 1132 of the auxiliary part 113 are connected, the second surface 1132 is an arc surface, and the second surface 1132 is protruded in the direction away from the main part 112. In this way, the area of ​​the second surface 1132 is larger, which is beneficial to increase the contact area between the second surface 1132 and the film layer subsequently formed on the second surface 1132, thereby improving the connection stability between the second surface 1132 and the film layer subsequently formed on the second surface 1132.

[0069] In some other embodiments, see Figure 8 and Fig.10The auxiliary portion 113 includes a second surface 1132, the first surface 1121 of the main body 112 and the second surface 1132 of the auxiliary portion 113 are connected, the second surface 1132 is an inclined surface, and the second surface 1132 includes a first end 1132a and a second end 1132b that are relatively arranged, the first end 1132a is close to the main body 112, and the second end 1132b is far away from the main body 112, and the first end 1132a is inclined relative to the second end 1132b in a direction away from the substrate 101. In this way, the shape of the second surface 1132 is relatively simple, which is conducive to reducing the difficulty of preparing the second surface 1132.

[0070] For example, see Figure 3 The maximum value of the distance between the second surface 1132 of the auxiliary part 113 and the substrate 101 is smaller than the maximum value of the distance between the first surface 1121 of the main part 112 and the substrate 101. For example, the maximum thickness of the auxiliary part 113 is smaller than the maximum thickness of the main part 112. In this way, when light is emitted from the light extraction element 140, the second surface 1132 of the auxiliary part 113 adjacent to the light extraction element 140 blocks less of the emitted light, which can reduce the light entering the adjacent auxiliary part 113, which is beneficial to increasing the light output of the display panel 100.

[0071] In some embodiments, see Figure 1 and Figure 3 The display panel 100 further includes a plurality of light extraction members 140, which are disposed on the side of the substrate 101 facing the first insulating layer 110. The light extraction members 140 and the first openings 111 can be disposed correspondingly, and the light extraction members 140 are located in the corresponding first openings 111. The light extraction members 140 can reduce light loss and increase light extraction, thereby improving display effects.

[0072] In some embodiments, see Fig.13 The side surface of the light extraction member 140 is a third surface 143, and the third surface 143 is a curved surface. The third surface 143 is protruded in the direction away from the center of the light extraction member 140. In this way, the area of ​​the third surface 143 is larger, which is beneficial to increase the contact area between the third surface 143 and the film layer subsequently formed on the third surface 143, thereby improving the connection stability between the third surface 143 and the film layer subsequently formed on the third surface 143. In addition, it is also beneficial to increase the brightness of the display panel 100 at a large viewing angle and improve the color difference of the display panel 100.

[0073] Exemplarily, the angle between the side of the light extraction member 140 and the substrate 101 is in the range of 70°-85°, that is, the angle between the third surface 143 and the substrate 101 is in the range of 70°-85°, so that the angle between the side of the light extraction member 140 and the substrate 101 can be prevented from being too small, which is beneficial to improving the brightness of the display panel 100 at a wide viewing angle and improving the color difference of the display panel 100. In addition, it can also prevent the angle between the side of the light extraction member 140 and the substrate 101 from being too large, which is beneficial to increasing the area of ​​the third surface 143. For example, the angle between the side of the light extraction member 140 and the substrate 101 can be 70°, 75°, 80°, 85°, or any value between 70°-85°.

[0074] In the implementation where the third surface 143 is a curved surface, the angle between the side surface of the light extraction element 140 and the substrate 101 may be: the angle between a virtual plane tangent to the side surface of the light extraction element 140 and the substrate 101 .

[0075] For example, see Fig.13 The surface of the light extraction member 140 facing away from the substrate 101 is a plane, and the fourth surface 144 for light extraction is a plane, so that the structure of the surface of the light extraction member 140 facing away from the substrate 101 is relatively simple, which is conducive to reducing the difficulty of preparing the surface of the light extraction member 140 facing away from the substrate 101.

[0076] In some other examples, the fourth surface 144 may be a curved surface, and the embodiment of the present application does not limit the shape of the fourth surface 144 .

[0077] For example, see Figure 2 In the same first opening 111, the minimum value (i.e., the minimum distance) of the distance W2 between the light extraction element 140 and the auxiliary part 113 is greater than or equal to 1 μm, that is, the minimum value of the distance W2 between the light extraction element 140 and the adjacent first insulating layer 110 is greater than or equal to 1 μm. In this way, when light is emitted from the light extraction element 140, the auxiliary part 113 adjacent to the light extraction element 140 blocks less of the emitted light, which can reduce the light entering the adjacent auxiliary part 113, which is beneficial to increase the light output of the display panel 100. In addition, it is beneficial to reduce the difficulty of setting the distance between the light extraction element 140 and the auxiliary part 113. For example, in the same first opening 111, the minimum value of the distance W2 between the light extraction element 140 and the auxiliary part 113 can be 1 μm, 1.5 μm, 2 μm, 2.5 μm, or any value greater than 1 μm.

[0078] Exemplarily, the light extraction member 140 and the first insulating layer 110 are disposed in the same layer, thereby simplifying the preparation process of the light extraction member 140 and the first insulating layer 110 and reducing the preparation cost. For example, the material of the first insulating layer 110 and the light extraction member 140 may include a material with a high refractive index.

[0079] It should be noted that the “same-layer arrangement” in the embodiments of the present application means that multiple film layers are formed from the same material through the same or different processes, but are not necessarily located on the same horizontal plane or have the same thickness.

[0080] For example, see Figure 2 In the same first opening 111, the distance W2 between the light extraction element 140 and the first insulating layer 110 is the same everywhere along the circumference of the light extraction element 140, so that the shape of the orthographic projection of the light extraction element 140 on the substrate 101 is adapted to the shape of the orthographic projection of the first opening 111 on the substrate 101, which is beneficial to increase the coverage area of ​​the light extraction element 140 and the first insulating layer 110.

[0081] In some embodiments, see Figure 2 , the dimension W3 of the main body 112 along the direction perpendicular to the extension of the main body 112 is 3μm-5μm, so that the dimension W3 of the main body 112 along the direction perpendicular to the extension of the main body 112 can be prevented from being too small, which is conducive to the main body 112 covering the touch wiring 102 well. In addition, the dimension W3 of the main body 112 along the direction perpendicular to the extension of the main body 112 can be prevented from being too large, so as to provide more space for the auxiliary part 113. For example, the dimension W3 of the main body 112 along the direction perpendicular to the extension of the main body 112 can be 3μm, 3.5μm, 4μm, 4.5μm, 5μm or any value between 3μm and 5μm.

[0082] For example, see Figure 2 , the dimension W1 of the auxiliary part 113 along the extending direction perpendicular to the main part 112 is less than or equal to 3.5 μm, so that the dimension W1 of the auxiliary part 113 along the extending direction perpendicular to the main part 112 can be prevented from being too large, and the auxiliary part 113 can be prevented from affecting the layout of the light extraction member 140. For example, the dimension W1 of the auxiliary part 113 along the extending direction perpendicular to the main part 112 can be 1 μm, 2 μm, 3 μm, 3.5 μm, or any value less than 3.5 μm.

[0083] The touch wiring 102 and the auxiliary touch wiring provided in the embodiment of the present application are further described below.

[0084] In some embodiments, the touch lines 102 may be surrounded by a plurality of second openings, the second openings are arranged corresponding to the first openings 111, and the orthographic projection of the first opening 111 on the substrate 101 is located within the orthographic projection of the corresponding second opening on the substrate 101. In this case, the touch lines 102 may be arranged crosswise to form a grid structure.

[0085] In some embodiments, the touch line 102 may include a plurality of first touch electrodes extending along a first direction X, and a plurality of second touch electrodes extending along a second direction Y, and the first touch electrodes and the second touch electrodes are interlaced (i.e., intersecting). Each first touch electrode may include a plurality of first touch electrode blocks arranged along the first direction X, and the first touch electrode blocks may be a grid structure formed by the cross-arranged touch lines 102. Each second touch electrode may include a plurality of second touch electrode blocks arranged along the second direction Y, and the second touch electrode blocks may be a grid structure formed by the cross-arranged touch lines 102. Since the touch electrode blocks (the first touch electrode blocks and the second touch electrode blocks) are grid structures, the touch electrode blocks of the grid structure may be located in the non-opening area of ​​the display panel 100, so that the grid structure does not block the opening area, and the influence of the touch line 102 on the light emitting device layer can be reduced, thereby reducing the influence of the touch line 102 on the display effect of the display area.

[0086] Exemplarily, the multiple touch electrode blocks of one of the first touch electrode and the second touch electrode may be connected to form an uninterrupted structure through the touch wiring 102. The multiple touch electrode blocks of the other of the first touch electrode and the second touch electrode may be disconnected and connected through a bridge formed by an auxiliary touch wiring, and the bridge may be located at the intersection of the first touch electrode and the second touch electrode to avoid short circuit between the first touch electrode and the second touch electrode at the intersection.

[0087] Exemplarily, one of the first touch control electrode and the second touch control electrode is a driving electrode, and the other of the first touch control electrode and the second touch control electrode is a sensing electrode (detection electrode).

[0088] Exemplarily, the material of at least one of the auxiliary touch trace and the touch trace 102 may include metals such as titanium, silver, copper, aluminum, molybdenum, or alloys, or conductive oxides (such as indium tin oxide (Indium Tin Oxide, referred to as ITO), indium zinc oxide (Indium Zinc Oxide, referred to as IZO), zinc oxide (ZnO), aluminum zinc oxide (Aluminum Zinc Oxid; referred to as AZO)), zinc gallium oxide, titanium tantalum oxide, tin oxide, cadmium oxide, indium oxide, any one or more.

[0089] The light-emitting device layer provided in the embodiments of the present application is described below.

[0090] In some embodiments, the light-emitting device layer includes a plurality of light-emitting units, and the plurality of light-emitting units are arranged at intervals along a thickness direction perpendicular to the substrate 101. For example, the plurality of light-emitting units may be arranged in an array. The first opening 111 may be arranged corresponding to the light-emitting unit, and the orthographic projection of the light-emitting unit on the substrate 101 overlaps with the orthographic projection of the corresponding first opening 111 on the substrate 101, for example, the orthographic projection of the light-emitting unit on the substrate 101 may be located within the orthographic projection of the corresponding first opening 111 on the substrate 101. The orthographic projection of the light-emitting unit on the substrate 101 overlaps with the orthographic projection of the corresponding light extraction element 140 on the substrate 101, for example, the orthographic projection of the light-emitting unit on the substrate 101 is located within the orthographic projection of the corresponding light extraction element 140 on the substrate 101.

[0091] In the embodiment of the present application, the corresponding arrangement of A and B may refer to: one A is correspondingly arranged with at least one B, or one B is correspondingly arranged with at least one A. The embodiment of the present application is described by taking the corresponding arrangement of one A and one B as an example. For example, the corresponding arrangement of the light-emitting unit and the first opening 111 may refer to: one light-emitting unit and at least one first opening 111 are correspondingly arranged, or one first opening 111 is correspondingly arranged with at least one light-emitting unit.

[0092] In some embodiments, the light emitting unit may include a first electrode, a light emitting material, and a second electrode stacked in sequence in a direction away from the substrate 101, and the first electrode may be located on a side of the light emitting material facing the substrate 101. One of the first electrode and the second electrode may be an anode, and the other of the first electrode and the second electrode may be a cathode.

[0093] Exemplarily, the light-emitting unit may further include one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL), an electron transport layer (ETL), a hole blocking layer (HBL) and an electron blocking layer (EBL).

[0094] Exemplarily, the plurality of light emitting units include, but are not limited to, a red light emitting unit, a green light emitting unit, and a blue light emitting unit. In some other examples, the plurality of light emitting units may also include a white light emitting unit.

[0095] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: substrate; A touch control wiring is arranged on one side of the substrate; A first insulating layer, disposed on a side of the touch wiring facing away from the substrate; Among them, the first insulating layer includes a main part and an auxiliary part which are connected, the main part is surrounded by a plurality of first openings arranged at intervals, and the auxiliary part is located on a side of the main part facing the first openings; in the thickness direction of the substrate, the main part covers the touch wiring, and the auxiliary part does not overlap with the touch wiring.

2. The display panel according to claim 1, characterized in that: The display panel further includes a second insulating layer, wherein the second insulating layer is located between the touch wiring and the substrate; A first embedding portion is provided on a side of the first insulating layer facing the substrate, and a second embedding portion is provided on a side of the second insulating layer away from the substrate. The first embedding portion and the second embedding portion are embedded with each other.

3. The display panel according to claim 2, characterized in that: The first embedding portion includes a first sub-embedding portion, the second embedding portion includes a second sub-embedding portion, and the first sub-embedding portion and the second sub-embedding portion are embedded with each other; The first sub-engaging portion is disposed on the auxiliary portion.

4. The display panel according to claim 2, characterized in that: The first embedding portion includes a third sub-embedded portion, the second embedding portion includes a fourth sub-embedded portion, and the third sub-embedded portion and the fourth sub-embedded portion are embedded with each other; The third sub-embedded portion is arranged on the main body.

5. The display panel according to claim 3, characterized in that: On the same auxiliary portion, there are a plurality of first sub-embedding portions, and the plurality of first sub-embedding portions are arranged at intervals.

6. The display panel according to any one of claims 2 to 5, characterized in that: The surface of the second insulating layer facing away from the substrate is a rough surface, and the roughness of the rough surface is in the range of 5nm-10nm.

7. The display panel according to any one of claims 2 to 5, characterized in that: One of the first fitting portion and the second fitting portion is a groove, and the other is a protrusion, and the groove and the protrusion fit into each other; The notch size of the groove is smaller than the size of the bottom wall of the groove; And / or, the opening size of the groove gradually decreases from the groove bottom wall to the groove opening; And / or, the depth of the groove is in the range of 0.3 μm-0.5 μm.

8. The display panel according to any one of claims 1 to 5, characterized in that: The side wall of the first opening includes a plurality of first side walls connected end to end in sequence, two adjacent first side walls extend in different directions, and the auxiliary portion is correspondingly provided on a side of at least one first side wall facing the first opening.

9. The display panel according to claim 8, characterized in that: In the corresponding first side wall and the auxiliary portion, the width of the auxiliary portion along the extension direction perpendicular to the first side wall is a first width, and the first width gradually increases from the center to the edge of the extension direction of the first side wall.

10. The display panel according to claim 8, characterized in that: In the corresponding first side wall and the auxiliary portion, the width of the auxiliary portion along the extension direction perpendicular to the first side wall is a first width, and the first width is the same everywhere along the extension direction of the first side wall.

11. The display panel according to any one of claims 1 to 5, characterized in that: The surface of the main body away from the substrate is a first surface, the first surface is a curved surface, and the first surface is convexly arranged in a direction away from the substrate; And / or, the auxiliary portion includes a second surface, and a surface of the main portion facing away from the substrate is connected to the second surface; the second surface is a curved surface, and the second surface is convexly arranged in a direction away from the main portion; or, the second surface is an inclined surface, and the second surface includes a first end close to the main portion and a second end away from the main portion, and the first end is inclined relative to the second end in a direction away from the substrate; And / or, the maximum thickness of the auxiliary portion is smaller than the maximum thickness of the main body portion.

12. The display panel according to any one of claims 1 to 5, characterized in that: The display panel further includes a plurality of light extraction members, wherein the light extraction members are arranged on a side of the substrate facing the first insulating layer, and the light extraction members are correspondingly arranged in the first openings.

13. The display panel according to claim 12, characterized in that: The side surface of the light extraction member is a third surface, the third surface is a curved surface, and the third surface is convexly arranged in a direction away from the center of the light extraction member; And / or, the angle between the side surface of the light extraction member and the substrate is in the range of 70°-85°; And / or, the surface of the light extraction member facing away from the substrate is a plane; and / or, in the same first opening, the minimum distance between the light extraction member and the auxiliary portion is greater than or equal to 1 μm; And / or, the light extraction member and the first insulating layer are arranged on the same layer; And / or, in the same first opening, the distance between the light extraction element and the first insulating layer is the same everywhere along the circumference of the light extraction element.

14. The display panel according to any one of claims 1 to 5, characterized in that: The size of the main body along the extension direction perpendicular to the main body is 3 μm-5 μm; And / or, a dimension of the auxiliary portion along a direction perpendicular to an extension direction of the main portion is less than or equal to 3.5 μm.

15. The display panel according to any one of claims 1 to 5, characterized in that: The main body is surrounded to form a plurality of first openings that are spaced apart.

16. A display device, characterized in that: A display panel comprising any one of claims 1-15.

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