Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, and relate to the technical field of display, which can reduce the damage risk of the display panel near the hole position in the film tearing process, and improve the yield of the display panel. The display panel comprises a display area and a hole area, the display area surrounds the hole area, and the display panel comprises: a substrate; a screen body functional layer located on one side of the substrate, the screen body functional layer is provided with a first through hole, and the first through hole is located in the display area; a protective layer located on the side of the screen body functional layer away from the substrate, the protective layer is provided with a second through hole, the first through hole and the second through hole are in communication, and the surface of the protective layer away from the substrate is provided with at least one groove; wherein the groove is in communication with the second through hole, and the depth size of the groove is smaller than the thickness size of the protective layer.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display panel and a display device. BACKGROUND

[0002] With the development and progress of display technologies such as flexible display panels, the requirements for the preparation efficiency and quality of display panels and display devices are also increasing. The substrate of a flexible display panel is usually formed of a flexible material, and a glass substrate formed of a rigid material provides support for the flexible substrate to improve the yield of subsequent film layer preparation. In the preparation process of a traditional display panel, a plurality of screen functional layers are usually formed on the surface of a composite substrate formed of a large rigid substrate and a flexible substrate in a region-by-region manner to obtain a middle plate, and then the middle plate is cut to obtain a plurality of individual display panels. To avoid damage to the display panel caused by the cutting machine, a protective layer is usually arranged on the surface of the encapsulation layer of the display panel, and the protective layer is peeled off after cutting is completed.

[0003] For a display panel with an opening requirement, the opening and cutting are usually performed synchronously, which increases the bonding force between the protective layer around the opening and the display panel, increases the film tearing stress generated during peeling, and further damages the display panel around the opening, thereby affecting the yield of the display panel. SUMMARY

[0004] Therefore, embodiments of the present application provide a display panel and a display device, which can reduce the damage risk of the display panel near the opening position during film peeling and improve the yield of the display panel.

[0005] In a first aspect, a display panel is provided, which includes a display area and an opening area, the display area surrounds the opening area, and the display panel includes:

[0006] a substrate;

[0007] a screen functional layer located on one side of the substrate, the screen functional layer is provided with a first through hole, and the first through hole is located in the display area;

[0008] a protective layer located on the side of the screen functional layer away from the substrate, the protective layer is provided with a second through hole, the first through hole and the second through hole are in communication, and the surface of the protective layer away from the substrate is provided with at least one groove;

[0009] wherein the groove is in communication with the second through hole, and the depth dimension of the groove is smaller than the thickness dimension of the protective layer.

[0010] In some embodiments, the protective layer includes a plurality of grooves, and each groove is arranged around the second through hole.

[0011] In some embodiments, the protective layer comprises a plurality of grooves, and the plurality of grooves are uniformly distributed on the periphery of the second through hole.

[0012] In some embodiments, the protective layer comprises a plurality of grooves, and the grooves are symmetrically arranged with respect to the geometric center of the second through hole.

[0013] In some embodiments, the shape of the projection of the groove towards the substrate comprises an arc shape.

[0014] In some embodiments, the opening of the arc shape faces the hole region, and the two ends of the groove in the arc shape are connected to the second through hole.

[0015] In some embodiments, the areas of the regions enclosed by at least two grooves and the second through hole are different.

[0016] In some embodiments, the opening of the arc shape faces away from the hole region, and the middle region of the groove in the arc shape is connected to the second through hole.

[0017] In some embodiments, the shape of the projection of the groove towards the substrate comprises an S shape, and one end of the groove is connected to the second through hole.

[0018] In some embodiments, the groove comprises two connected segments, and the two segments in the same groove have the shape of an arc with opposite opening directions in the projection towards the substrate.

[0019] In some embodiments, the radius of the arc of the segment is positively correlated with the hole diameter of the second through hole.

[0020] In some embodiments, the shape of the projection of the groove towards the substrate comprises a ring shape.

[0021] In some embodiments, in the extension direction of the groove, the depth dimension of the groove is negatively correlated with the extension length of the groove from the second through hole.

[0022] In some embodiments, the display device comprises:

[0023] The bottom surface of the groove comprises a slope surface.

[0024] In some embodiments, in the direction in which the hole region points to the display region, the depth dimension of the groove gradually decreases.

[0025] In some embodiments, the ratio of the depth dimension of the groove to the thickness dimension of the protective layer is in the range of 40% to 60%.

[0026] The second aspect of the embodiments of the present application provides a display device, comprising:

[0027] The display panel according to any one of the first aspect as described above.

[0028] The display panel and the display device provided by the embodiments of the present application can protect the surface of the display panel in the process of cutting and opening the display panel, and avoid scratching the display panel, by arranging the protective layer on the side of the screen functional layer away from the substrate. Meanwhile, the second through hole of the protective layer is in communication with the first through hole of the screen functional layer, and the groove is arranged on the side of the protective layer away from the screen functional layer, so that the groove is in communication with the second through hole. The thickness of the protective layer around the second through hole can be reduced by arranging the groove, and then the bonding force between the protective layer around the second through hole and the screen functional layer around the first through hole can be reduced. Further, the stress generated by peeling the protective layer on the screen functional layer around the first through hole can be reduced in the process of peeling the protective layer, so that the damage of the protective layer peeling on the screen functional layer around the first through hole can be avoided, and the surface integrity of the display panel can be further improved, and the yield of the display panel can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the description of the embodiments of the present application or the related art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other related drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 A schematic structural diagram of a display panel provided by the embodiments of the present application is shown in the figure;

[0031] Figure 2 A schematic top view of a display panel provided by the embodiments of the present application is shown in the figure;

[0032] Figure 3 A schematic top view of another display panel provided by the embodiments of the present application is shown in the figure;

[0033] Figure 4 A schematic top view of another display panel provided by the embodiments of the present application is shown in the figure;

[0034] Figure 5 A schematic top view of another display panel provided by the embodiments of the present application is shown in the figure;

[0035] Figure 6 A schematic top view of a display panel provided by the embodiments of the present application is shown in the figure;

[0036] Figure 7 A schematic structural diagram of another display panel provided by the embodiments of the present application is shown in the figure;

[0037] Figure 8 FIG. 1 shows a schematic structural diagram of a display panel according to an embodiment of the present application;

[0038] Figure 9 FIG. 2 shows a schematic structural diagram of a display device according to an embodiment of the present application.

[0039] Reference Signs List:

[0040] 100 - substrate, 200 - screen body functional layer, 300 - protective layer, H1 - first through hole, H2 - second through hole, G - groove. DETAILED DESCRIPTION

[0041] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. In the drawings, embodiments of the present application are shown. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present application is more thorough and complete.

[0042] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustration only.

[0043] In this document, spatially relative terms, such as "upper" and "lower", are defined with respect to the drawings. Thus, "upper" and "lower" are used interchangeably with respect to one another. It will be understood that when a layer is referred to as being "on" another layer, it can be directly formed on the other layer or intervening layers can also be present. It will be understood that when a layer is referred to as being "directly on" another layer, there are no intervening layers present between the two layers.

[0044] In the drawings, the size of layers and regions can be exaggerated for clarity. It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present. In addition, it will be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers can also be present. In addition, like reference numerals are used throughout the drawings to denote like elements.

[0045] Hereinafter, although terms such as "first", "second", and the like can be used to describe various components, the components are not limited to the above terms. The above terms are used only to distinguish one component from another component. It will also be understood that the expression used in the singular includes the expression used in the plural, unless the context clearly dictates otherwise. In addition, in the following embodiments, it will also be understood that the terms "include" and / or "have" as used herein specify the presence of stated features or components, but do not preclude the presence or addition of one or more other features or components.

[0046] In the following embodiments, when a layer, region, or element is "connected", it can be interpreted that the layer, region, or element is not only directly connected but also connected through other constituent elements placed therebetween. For example, when a layer, region, element, or the like is described as being connected or electrically connected, the layer, region, element, or the like can be not only directly connected or electrically connected but also connected or electrically connected through another layer, region, element, or the like placed therebetween.

[0047] As used in the specification, the term "and / or" includes any and all combinations of one or more of the associated listed items. When a phrase such as "at least one of (a), (b), and (c)" is used, it modifies the entire list of (a), (b), and (c) and does not modify the individual elements of the list.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the application herein is only for the purpose of describing the specific embodiments and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] It should also be understood that the terms "include / including", "have / having" or the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0050] Electronic or electric devices and / or any other related devices or components (e.g., display devices including display panels and display panel drivers, where the display panel drivers further include drive controllers, gate drivers, gamma reference voltage generators, data drivers, and emission drivers) according to embodiments of the inventive concepts described herein can be implemented using any suitable hardware, firmware (e.g., application specific integrated circuits), software, or combinations of software, firmware, and hardware. For example, various components of these devices can be formed on one integrated circuit (IC) chip or on separate IC chips. In addition, various components of these devices can be implemented on flexible printed circuit films, tape carrier packages (TCPs), printed circuit boards (PCBs), or formed on one substrate. In addition, various components of these devices can be processes or threads running on one or more processors in one or more computing devices, with programs for those processes or threads implemented either in the software, firmware, or hardware, to perform various functions described herein. Computer program instructions are stored in memory, which can be implemented using standard memory devices such as random access memory (RAM). Computer program instructions are also stored in other non-transitory computer readable media such as, for example, CD-ROMs, flash drives, etc. Also, those skilled in the art will appreciate that the functions of various computing devices can be combined or integrated into a single computing device, or the functions of a particular computing device can be distributed across one or more other computing devices without departing from the spirit and scope of the exemplary embodiments of the inventive concepts.

[0051] While example embodiments of display modules and display devices including display modules have been particularly described herein, many modifications and variations will be apparent to those skilled in the art. Accordingly, it is to be understood that display modules and display devices including display modules according to the principles of the present application can be practiced otherwise than as specifically described herein. This application is also intended to cover any and all equivalents where the patentee, using reasonable care, could have been expected to predict such equivalents given the teaching herein.

[0052] It should be noted that in the preparation process of the conventional display panel, the middle plate including a plurality of screen functional layers is usually flipped on the cutting machine, so that the side of the screen functional layer away from the substrate faces the machine. In the process of cutting and hole opening, the substrate, the screen functional layer and the protective layer in the edge and the hole opening area are simultaneously removed. Therefore, in the process of hole opening, the stress around the hole is concentrated, and the extrusion generated during hole opening can further enhance the adhesion of the protective layer and the screen functional layer around the hole.

[0053] However, in the process of peeling off the protective layer, due to the increased bonding force between the protective layer around the hole and the screen functional layer, the peeling stress generated during peeling also needs to be increased. In addition, in the process of peeling off the protective layer, the stress direction and stress size around the hole will change with the gradual peeling of the protective layer, further causing uneven stress of the screen functional layer around the hole, thereby increasing the risk of damage to the screen functional layer around the hole, affecting the yield of the display panel.

[0054] For display panels with hole opening requirements, hole opening and cutting are usually performed synchronously, thereby increasing the bonding force between the protective layer around the hole and the display panel, increasing the film tearing stress generated during peeling, and further causing the display panel around the hole to be damaged, affecting the yield of the display panel.

[0055] As shown in Figure 1 The first aspect of the embodiments of the present application provides a display panel, the display panel comprising a display area and a hole area, the display area surrounding the hole area, the display panel comprising: a substrate 100, a screen functional layer 200 and a protective layer 300. Wherein the screen functional layer 200 is located on one side of the substrate 100, and the screen functional layer 200 is provided with a first through hole H1, and the first through hole H1 is located in the display area; the protective layer 300 is located on the side of the screen functional layer 200 away from the substrate 100, and the protective layer 300 is provided with a second through hole H2, and the first through hole H1 and the second through hole H2 are in communication, and the surface of the protective layer 300 away from the substrate 100 is provided with at least one groove G; wherein the groove G is in communication with the second through hole H2, and the depth dimension of the groove G is less than the thickness dimension of the protective layer 300.

[0056] Exemplarily, the groove G can also be arranged on the surface of the protective layer 300 close to the substrate 100. However, it should be noted that arranging the groove G on the surface of the protective layer 300 close to the substrate 100 will result in a decrease in the bonding area of the protective layer 300 and the screen functional layer 200, thereby resulting in insufficient bonding force between the protective layer 300 and the screen functional layer 200, increasing the risk of the protective layer 300 separating during the display panel flipping process, affecting the reliability and safety of the display panel preparation. In addition, arranging the groove G on the surface of the protective layer 300 close to the substrate 100 will also result in a decrease in the stability of the display panel during cutting, thereby reducing the accuracy of the display panel hole opening, affecting the yield of the display panel.

[0057] The display panel provided by the embodiment of the present application can protect the surface of the display panel in the process of cutting and opening of the display panel by arranging the protective layer 300 on the side of the screen functional layer 200 away from the substrate 100, so as to avoid scratching of the display panel. Meanwhile, the second through hole H2 of the protective layer 300 is in communication with the first through hole H1 of the screen functional layer 200, and the groove G is arranged on the side of the protective layer 300 away from the screen functional layer 200, so that the groove G is in communication with the second through hole H2. The thickness of the protective layer 300 around the second through hole H2 can be reduced by arranging the groove G, and then the bonding force between the protective layer 300 around the second through hole H2 and the screen functional layer 200 around the first through hole H1 can be reduced. Further, the stress generated by the peeling of the protective layer 300 on the screen functional layer 200 around the first through hole H1 can be reduced in the process of peeling the protective layer 300, so as to avoid damage to the screen functional layer 200 around the first through hole H1 caused by the peeling of the protective layer 300, further improve the surface integrity of the display panel, and improve the yield of the display panel.

[0058] As shown in Figure 2 In some possible implementation manners, the protective layer 300 includes a plurality of grooves G, and each groove G is arranged around the second through hole H2.

[0059] The display panel provided by the embodiment of the present application can further reduce the bonding force between the protective layer 300 around the second through hole H2 and the screen functional layer 200 around the first through hole H1 by increasing the total area of the groove G, reduce the stress generated by the peeling of the protective layer 300 on the screen functional layer 200 around the first through hole H1, and further reduce the risk of damage to the screen functional layer 200 around the first through hole H1 caused by the peeling of the protective layer 300, so as to improve the surface integrity of the display panel and improve the yield of the display panel.

[0060] As shown in Figure 2 In some possible implementation manners, the plurality of grooves G are uniformly distributed on the side of the second through hole H2.

[0061] The display panel provided by the embodiment of the present application can improve the stress uniformity of the protective layer 300 in the cutting process, prevent the protective layer 300 around the hole area from shaking in the cutting process and affecting the opening quality, and further improve the uniformity of the stress generated by the peeling of the protective layer 300 on the screen functional layer 200 around the first through hole H1, so as to avoid local peeling of the screen functional layer 200 around the hole area of the display panel, further improve the surface integrity of the display panel, and improve the yield of the display panel.

[0062] As shown in Figure 3As shown, in some feasible embodiments, the protective layer 300 includes a plurality of grooves G, which are symmetrically arranged about the geometric center of the second through hole H2.

[0063] The display panel provided in this application embodiment, by symmetrically arranging multiple grooves G about the geometric center of the second through hole H2, can improve the uniformity of stress on the protective layer 300 during the cutting process, prevent the protective layer 300 around the hole area from shaking during the cutting process, and affect the hole quality. At the same time, it can further improve the uniformity of stress generated by the peeling of the protective layer 300 on the screen functional layer 200 around the first through hole H1, avoid local peeling of the screen functional layer 200 around the hole area of ​​the display panel, further improve the surface integrity of the display panel, and improve the yield of the display panel.

[0064] like Figure 2 , Figure 4 and Figure 5 As shown, in some feasible embodiments, the shape of the groove G as an orthographic projection toward the substrate 100 includes an arc shape.

[0065] The display panel provided in this application embodiment, by setting an arc-shaped groove G, can utilize the curved boundary of the groove G to change the stress transmission direction, suppress the sudden stress change of the protective layer 300 around the second through hole H2 during the peeling process, reduce the risk of the protective layer 300 breaking along the groove G during the peeling process, further improve the integrity of the protective layer 300 during the peeling process, improve the uniformity of the force on the screen functional layer 200 around the first through hole H1 during the peeling process of the protective layer 300, thereby further reducing the risk of local peeling of the screen functional layer 200 around the hole area of ​​the display panel, improving the surface integrity of the display panel, and improving the yield of the display panel.

[0066] like Figure 4 As shown, in some feasible embodiments, the arc-shaped opening faces the hole area, and the two ends of the arc-shaped groove G are connected to the second through hole H2.

[0067] The display panel provided in this application embodiment, by connecting the two ends of the arc-shaped groove G to the second through hole H2, allows the arc-shaped opening to face the hole area, which can reduce the risk of breakage along the groove G during the peeling process of the protective layer 300, further improve the integrity of the protective layer 300 during the peeling process, thereby enhancing the protective effect of the protective layer 300, reducing the peeling difficulty, and avoiding damage to the surface integrity of the display panel by repeated peeling. At the same time, since the openings of different grooves G all face the hole area, the grooves G can further reduce the impact of stress in different directions on the screen functional layer 200 around the first through hole H1 during the peeling process, which can further reduce the risk of local peeling of the screen functional layer 200 around the hole area of ​​the display panel, improve the surface integrity of the display panel, and improve the yield of the display panel.

[0068] As shown in Figure 4 In some possible implementation manners, the areas of the regions formed by the at least two grooves G and the second through hole H2 are different.

[0069] The display panel provided in the embodiments of the present application can be used to make the shapes of the at least two openings connected to the same second through hole H2 different, so that the display panel can be used to improve the adjusting capability of the grooves G to the peeling stress, enhance the peeling stress uniformity of the protective layer 300 around the second through hole H2 to the screen functional layer 200 around the first through hole H1, further reduce the risk of local peeling of the screen functional layer 200 around the hole region of the display panel, improve the surface integrity of the display panel, and improve the yield of the display panel.

[0070] As shown in Figure 5 In some possible implementation manners, the arc-shaped opening faces away from the hole region, and the middle region of the arc-shaped groove G is connected to the second through hole H2.

[0071] The display panel provided in the embodiments of the present application can be used to increase the connection area of the groove G and the second through hole H2, so that the peeling stress on the protective layer 300 around the second through hole H2 can be uniformly distributed along the edge of the groove G, further enhance the peeling stress uniformity of the protective layer 300 around the second through hole H2 to the screen functional layer 200 around the first through hole H1, further reduce the risk of local peeling of the screen functional layer 200 around the hole region of the display panel, so as to improve the surface integrity of the display panel and improve the yield of the display panel.

[0072] As shown in Figure 2 In some possible implementation manners, the shape of the projection of the groove G toward the substrate 100 includes an S shape, and one end of the groove G is connected to the second through hole H2.

[0073] The display panel provided in the embodiments of the present application can be used to further increase the curvature of the edge of the groove G, further enhance the adjusting capability of the groove G to the peeling stress of the protective layer 300 around the second through hole H2, and inhibit the stress mutation of the protective layer 300 around the second through hole H2 in the peeling process, so as to further improve the uniformity of the stress of the screen functional layer 200 around the first through hole H1 in the peeling process of the protective layer 300, further reduce the risk of local peeling of the screen functional layer 200 around the hole region of the display panel, improve the surface integrity of the display panel, and improve the yield of the display panel.

[0074] In some possible implementation manners, the groove G includes two connected connection sections, and the two connection sections in the same groove G have shapes of arcs with opposite opening directions in the orthogonal projection towards the base 100; wherein the arc radius of the connection section is positively correlated with the hole diameter of the second through hole H2.

[0075] It should be noted that, in the case that the hole diameter of the second through hole H2 is large, the edge circumference of the second through hole H2 is long, so that the peeling time of the protective layer 300 at the edge of the second through hole H2 is prolonged in the peeling process of the protective layer 300, and further the peeling stress of the protective layer 300 at the edge of the second through hole H2 is accumulated, thereby causing the peeling risk of the screen functional layer 200 to be increased. By increasing the arc radius of the connection section, the length of the connection section in the radial direction of the second through hole H2 can be increased, and further the length of the groove G can be increased, so that the stress acting on the edge of the second through hole H2 can be sufficiently dispersed by the groove G, and the damage risk of the screen functional layer 200 around the first through hole H1 caused by the peeling of the protective layer 300 can be reduced.

[0076] The display panel provided by the embodiment of the present application can facilitate setting the shape of the groove G according to the hole diameter of the second through hole H2 by setting the arc radius of the connection section to be positively correlated with the hole diameter of the second through hole H2. For the second through hole H2 with a large hole diameter, the arc radius of the connection section can be increased accordingly, the length of the groove G can be increased by extension, the stress acting on the edge of the second through hole H2 can be sufficiently dispersed, the damage risk of the screen functional layer 200 around the first through hole H1 caused by the peeling of the protective layer 300 can be reduced, the surface integrity of the display panel can be improved, and the yield of the display panel can be improved. For the second through hole H2 with a small hole diameter, the arc radius of the connection section can be reduced accordingly, the distance between the edge of the groove G and the edge of the protective layer 300 can be increased, the fracture risk of the protective layer 300 can be reduced, the peeling difficulty of the protective layer 300 can be reduced, the peeling efficiency of the protective layer 300 can be improved, and further the preparation efficiency and the preparation quality of the display panel can be improved.

[0077] As shown in FIG. 1, Figure 6 In some possible implementation manners, the orthogonal projection of the groove G towards the base 100 has a shape of a ring.

[0078] The display panel provided by the embodiment of the present application can further increase the connection area between the groove G and the second through hole H2 by setting the ring-shaped groove G, so that the uniformity of the stress distribution at the edge of the second through hole H2 can be further improved in the peeling process of the protective layer 300, the risk of the local peeling of the screen functional layer 200 around the hole area of the display panel can be further reduced, the surface integrity of the display panel can be improved, and the yield of the display panel can be improved.

[0079] As shown in FIG. 1, Figure 7As shown, in some feasible embodiments, the depth dimension of the groove G is negatively correlated with the extension length of the groove G from the second through hole H2 in the extension direction of the groove G.

[0080] It should be noted that, in the extension direction of the groove G, the depth of the groove G near the second through hole H2 is greater than the depth of the groove G away from the second through hole H2. During the hole-opening process, the protective layer 300 near the second through hole H2 experiences greater stress. The compression during hole opening results in a greater bonding strength between the protective layer 300 near the second through hole H2 and the screen functional layer 200 than between the protective layer 300 away from the second through hole H2 and the screen functional layer 200. By increasing the depth of the groove G, the thickness of the protective layer 300 on the surface of the screen functional layer 200 can be reduced, thereby reducing the bonding force between the protective layer 300 and the screen functional layer 200 and reducing the stress required for peeling.

[0081] The display panel provided in this application embodiment sets the depth of the groove G to be negatively correlated with the extension length of the groove G from the second through hole H2. This facilitates setting the depth of the groove G according to the extension length of the groove G. For the end of the groove G that is closer to the second through hole H2, the depth of the groove G can be increased, and the thickness of the protective layer 300 at the corresponding position can be reduced. This reduces the bonding force between the screen functional layer 200 and the protective layer 300 at that position, reduces the stress required for peeling, reduces the peeling difficulty, and also reduces the tensile force generated during peeling, reducing the risk of the protective layer 300 damaging the surface integrity of the local screen functional layer 200. At the same time, for the end of the groove G that is farther from the second through hole H2, the depth of the groove G can be reduced to improve the stability during the cutting process. This avoids the groove G being too deep, which would result in insufficient support capacity of the protective layer 300 around the groove G, causing the protective layer 300 to wobble about the groove G and affecting the accuracy of the opening. This improves the manufacturing quality and yield of the display panel.

[0082] like Figure 8 As shown, in some feasible embodiments, the groove bottom surface of the groove G includes a sloped surface; wherein, in the direction from the hole area to the display area, the depth dimension of the groove G gradually decreases.

[0083] The display panel provided by the embodiment of the present application can further reduce the tensile force generated between different positions in the same groove G during the peeling process by setting the groove bottom surface of the groove G as a slope surface, and can reduce the risk of fracture of the protective layer 300. By setting the depth size of the groove G gradually decreasing in the direction of the display area from the hole area, the depth size of the groove G close to the hole area is increased, the bonding force between the screen functional layer 200 and the protective layer 300 at this position is reduced, the stress required for peeling is reduced, the peeling difficulty is reduced, the tensile force generated during the peeling process is also reduced, and the risk of surface integrity damage of the local screen functional layer 200 by the protective layer 300 is reduced. At the same time, by reducing the depth size of the groove G close to the hole area, the depth size of the groove G can be prevented from being too large, which can cause the support ability of the protective layer 300 around the groove G to be insufficient, the protective layer 300 about the groove G to shake, and the accuracy of the opening to be affected, thereby the preparation quality and yield of the display panel can be improved.

[0084] In some possible embodiments, the ratio of the depth size of the groove G to the thickness size of the protective layer 300 is in the range of 40% to 60%.

[0085] It should be noted that if the ratio of the depth size of the groove G to the thickness size of the protective layer 300 is too large, the thickness of the protective layer 300 at the bottom of the groove G will be small, and the stress on the protective layer 300 at the bottom of the groove G during the peeling process will be large, thereby further increasing the risk of fracture of the protective layer 300 during the peeling process. If the ratio of the depth size of the groove G to the thickness size of the protective layer 300 is too small, the thickness of the protective layer 300 at the bottom of the groove G will be large, which limits the effect of the groove G on reducing the bonding force between the protective layer 300 and the screen functional layer 200, and further increases the bonding force between the protective layer 300 and the screen functional layer 200 during the peeling process of the protective layer 300, thereby increasing the damage risk of the screen functional layer 200.

[0086] The display panel provided by the embodiment of the present application can avoid the ratio of the depth size of the groove G to the thickness size of the protective layer 300 being too large, thereby improving the anti-fracture ability of the protective layer 300 and the protection effect of the protective layer 300, and can also avoid the ratio of the depth size of the groove G to the thickness size of the protective layer 300 being too small, thereby reducing the stress generated by the peeling of the protective layer 300 on the screen functional layer 200 around the first through hole H1 during the peeling process of the protective layer 300, further avoiding the damage of the screen functional layer 200 around the first through hole H1 caused by the peeling of the protective layer 300, and further improving the surface integrity of the display panel 1000 and the yield of the display panel 1000.

[0087] As Figure 9As shown, the second aspect of the embodiments of the present application provides a display device, comprising the display panel 1000 of any one of the first aspect.

[0088] The display device provided by the embodiments of the present application can protect the surface of the display panel 1000 in the process of cutting and opening the display panel 1000, and avoid scratching the display panel 1000, by arranging the protective layer 300 away from the substrate 100 on one side of the screen functional layer 200. Meanwhile, the second through hole H2 of the protective layer 300 is in communication with the first through hole H1 of the screen functional layer 200, and the groove G is arranged on the side of the protective layer 300 away from the screen functional layer 200, so that the groove G is in communication with the second through hole H2. The thickness of the protective layer 300 around the second through hole H2 can be reduced by arranging the groove G, and then the bonding force between the protective layer 300 around the second through hole H2 and the screen functional layer 200 around the first through hole H1 can be reduced. Further, the stress generated by peeling the protective layer 300 on the screen functional layer 200 around the first through hole H1 can be reduced in the process of peeling the protective layer 300, so that the damage to the screen functional layer 200 around the first through hole H1 caused by peeling the protective layer 300 can be avoided, and the surface integrity of the display panel 1000 can be further improved, and the yield of the display panel 1000 can be improved.

[0089] In the description of the present specification, the description of the terms "some embodiments", "other embodiments", "ideal embodiments", and the like means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0090] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features of the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present specification.

[0091] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled persons in the art, some modifications 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 patent protection scope of the present application should be subject to the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes a display area and a hole area, the display area surrounding the hole area, the display panel including: Base; A screen functional layer is located on one side of the substrate, and the screen functional layer is provided with a first through hole, which is located within the hole area; A protective layer is located on the side of the screen functional layer away from the substrate. The protective layer has a second through hole, and the first through hole is connected to the second through hole. The surface of the protective layer away from the substrate has a plurality of grooves, and each groove is arranged around the second through hole. The groove is connected to the second through hole, and the depth of the groove is less than the thickness of the protective layer.

2. The panel according to claim 1, characterized in that, Multiple grooves are evenly distributed around the periphery of the second through hole.

3. The display panel according to claim 1, characterized in that, The groove is symmetrically arranged about the geometric center of the second through hole.

4. The display panel according to claim 1, characterized in that, The shape of the groove as a projection toward the substrate includes an arc shape.

5. The display panel according to claim 4, characterized in that, The arc-shaped opening faces the hole area, and the two ends of the arc-shaped groove are connected to the second through hole.

6. The display panel according to claim 5, characterized in that, The areas of the regions formed by the enclosing of at least two of the grooves and the second through hole are different.

7. The display panel according to claim 4, characterized in that, The arc-shaped opening is away from the hole area, and the central region of the arc-shaped groove is connected to the second through hole.

8. The display panel according to claim 4, characterized in that, The groove has an S-shaped orthographic projection toward the substrate, and one end of the groove is connected to the second through hole.

9. The display panel according to claim 8, characterized in that, The groove includes two connected segments, and the two connected segments in the same groove have an arc shape with opposite opening directions when projected onto the substrate. The radius of the arc of the connecting segment is positively correlated with the diameter of the second through hole.

10. The display panel according to claim 1, characterized in that, The shape of the groove as a projection toward the substrate includes an annular shape.

11. The display panel according to claim 1, characterized in that, In the extending direction of the groove, the depth dimension of the groove is negatively correlated with the extension length of the groove from the second through hole.

12. The display panel according to claim 1, characterized in that, The bottom surface of the groove includes a sloped surface; In the direction from the hole area to the display area, the depth of the groove gradually decreases.

13. The display panel according to claim 1, characterized in that, The ratio of the depth of the groove to the thickness of the protective layer ranges from 40% to 60%.

14. A display device, characterized in that, include: The display panel as described in any one of claims 1 to 13.

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