Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and can reduce the damage risk near the position of a display panel hole 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; the screen body function layer is located on one side of the substrate, a first through hole is formed in the screen body function layer, and the first through hole is located in the display area; the protective layer is located on the side, away from the substrate, of the screen body function layer, a second through hole is formed in the protective layer, the first through hole is communicated with the second through hole, and at least one groove is formed in the surface of the side, away from the substrate, of the protective layer; wherein the groove is communicated with the second through hole, and the depth size of the groove is smaller than the thickness size of the protection layer.

Description

Technical Field

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

[0002] With the development and progress of display technologies such as flexible display panels, the requirements for the production efficiency and production quality of display panels and display devices have increased accordingly. The substrate of a flexible display panel is usually formed of a flexible material, and a glass substrate formed of a hard material provides support for the flexible substrate to improve the yield of subsequent film layer preparation. In the preparation process of traditional display panels, multiple screen functional layers are usually formed in different regions on the surface of a composite substrate formed by a larger hard substrate and a flexible substrate to obtain a middle plate, which is then cut to obtain multiple separate display panels. In order to prevent the cutting machine from scratching the display panel, a protective layer is usually set on the surface of the encapsulation layer of the display panel and peeled off after cutting.

[0003] For display panels that require opening holes, the opening and cutting are usually carried out simultaneously, which increases the bonding strength between the protective layer around the hole and the display panel, increases the tearing stress generated during peeling, and further causes the display panel around the hole to be damaged, affecting the yield rate of the display panel. Summary of the invention

[0004] Based on this, the embodiments of the present application provide a display panel and a display device, which can reduce the risk of damage near the hole position of the display panel during the film tearing process and improve the yield rate of the display panel.

[0005] According to a first aspect of an embodiment of the present application, a display panel is provided, the display panel comprising a display area and a hole area, the display area surrounding the hole area, the display panel comprising:

[0006] substrate;

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

[0008] A protective layer is located on a 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 is connected to the second through hole, and a surface of the protective layer away from the substrate is provided with at least one groove;

[0009] The groove is connected to the second through hole, and the depth of the groove is smaller than the thickness of the protective layer.

[0010] In some embodiments, the protection layer includes a plurality of grooves, each of which is disposed around the second through hole.

[0011] In some embodiments, the protection layer includes a plurality of grooves, and the plurality of grooves are evenly distributed around the second through hole.

[0012] In some embodiments, the protection layer includes a plurality of grooves, and the grooves are symmetrically arranged about a geometric center of the second through hole.

[0013] In some embodiments, a shape of an orthographic projection of the groove toward the substrate includes an arc.

[0014] In some embodiments, the arc-shaped opening faces the hole area, and both ends of the arc-shaped groove are connected to the second through hole.

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

[0016] In some embodiments, the arc-shaped opening is away from the hole area, and the middle area of ​​the arc-shaped groove is connected to the second through hole.

[0017] In some embodiments, a shape of an orthographic projection of the groove toward the substrate includes an S-shape, and one end of the groove is connected to the second through hole.

[0018] In some embodiments, the groove includes two connected connecting segments, and the orthographic projections of the two connecting segments in the same groove toward the substrate are arcs with opposite opening directions;

[0019] Wherein, the arc radius of the connecting section is positively correlated with the aperture of the second through hole.

[0020] In some embodiments, a shape of an orthographic projection of the groove toward the substrate includes a ring.

[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, it is characterized in that

[0023] The groove bottom surface of the groove includes a slope surface;

[0024] Wherein, in the direction from the hole area to the display area, the depth dimension of the groove gradually decreases.

[0025] In some embodiments, the ratio of the depth of the groove to the thickness of the protective layer ranges from 40% to 60%.

[0026] According to a second aspect of an embodiment of the present application, a display device is provided, including:

[0027] A display panel as described in any one of the first aspects above.

[0028] A display panel and a display device provided by the embodiment of the present application can protect the surface of the display panel during the cutting and opening of the display panel by setting a protective layer on the side of the screen body functional layer away from the substrate, thereby preventing the display panel from being scratched. At the same time, the second through hole of the protective layer is connected to the first through hole of the screen body functional layer, and a groove is set on the side of the protective layer away from the screen body functional layer, so that the groove is connected to the second through hole. The thickness of the protective layer around the second through hole can be reduced by setting the groove, thereby reducing the bonding force between the protective layer around the second through hole and the screen body functional layer around the first through hole. Furthermore, in the process of peeling the protective layer, the stress generated by the peeling of the protective layer on the screen body functional layer around the first through hole can be reduced, thereby preventing the peeling of the protective layer from damaging the screen body functional layer around the first through hole, further improving the surface integrity of the display panel and improving the yield rate of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] FIG1 is a schematic structural diagram of a display panel provided in an embodiment of the present application;

[0031] FIG2 is a schematic top view of a display panel provided in an embodiment of the present application;

[0032] FIG3 is a schematic top view of another display panel provided in an embodiment of the present application;

[0033] FIG4 is a schematic top view of another display panel provided in an embodiment of the present application;

[0034] FIG5 is a schematic top view of another display panel provided in an embodiment of the present application;

[0035] FIG6 is a schematic top view of a display panel provided in an embodiment of the present application;

[0036] FIG7 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0037] FIG8 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

[0038] FIG. 9 is a schematic structural diagram of a display device provided in an embodiment of the present application.

[0039] Description of reference numerals:

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

[0041] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. 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 disclosure of the present application more thorough and comprehensive.

[0042] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0043] In this document, spatially related terms such as "upper" and "lower" are defined with reference to the accompanying drawings. Therefore, it will be understood that "upper" and "lower" are used interchangeably. 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 may also be present. Therefore, it will be understood that when a layer is referred to as being "directly on" another layer, there are no intervening layers interposed therebetween.

[0044] In the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity. It is understood that when a layer or element is referred to as being "on" another layer or substrate, the layer or element may be directly on the other layer or substrate, or there may be intervening layers. In addition, it is also understood that when a layer is referred to as being "between" two layers, the layer may be the only layer between the two layers, or there may be one or more intervening layers. In addition, the same reference numerals always represent the same elements.

[0045] Hereinafter, although terms such as "first", "second", etc. may be used to describe various components, these components are not necessarily limited to the above terms. The above terms are only used to distinguish one component from another component. It will also be understood that expressions used in the singular form include plural expressions, unless the expression in the singular form has a significantly different meaning in the context. In addition, in the following embodiments, it will also be understood that the terms "comprising" and / or "having" used herein illustrate the presence of the stated features or components, but do not exclude 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, etc. is described as being connected or electrically connected, the layer, region, element, etc. can be connected or electrically connected not only directly or directly, but also through another layer, region, element, etc. placed therebetween.

[0047] As used in the application documents, the term "and / or" includes any and all combinations of one or more of the related listed items. When a statement such as "at least one (one) of..." is placed after a list of elements (elements), it modifies the entire list of elements (elements), rather than modifying the individual elements (elements) in the list (elements).

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0049] It should also be understood that the terms “include / comprises” or “having” and the like specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0050] Electronic or electrical devices and / or any other related devices or components according to the embodiments of the inventive concepts described herein (e.g., a display device including a display panel and a display panel driver, wherein the display panel driver also includes a drive controller, a gate driver, a gamma reference voltage generator, a data driver, and an emission driver) can be implemented using any appropriate hardware, firmware (e.g., a dedicated integrated circuit), software, or a combination of software, firmware, and hardware. For example, the various components of these devices may be formed on an integrated circuit (IC) chip or on separate IC chips. In addition, the various components of these devices may be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on a substrate. In addition, the various components of these devices may be processes or threads that run on one or more processors in one or more computing devices to execute computer program instructions and interact with other system components to perform the various functions described herein. The computer program instructions are stored in a memory that can be implemented in a computing device using standard storage devices (e.g., such as random access memory (RAM). The computer program instructions can also be stored in other non-transitory computer-readable media (e.g., such as CD-ROMs, flash drives, etc.). Moreover, those skilled in the art should recognize 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 on one or more other computing devices without departing from the spirit and scope of the exemplary embodiments of the inventive concept.

[0051] Although exemplary embodiments of display modules and display devices including display modules have been specifically described herein, many modifications and variations will be apparent to those skilled in the art. Therefore, it will be understood that display modules and display devices including display modules constructed in accordance with the principles of the present invention may be implemented in addition to those specifically described herein. The present application is also defined in the claims and their equivalents.

[0052] It should be noted that in the traditional display panel manufacturing process, the middle plate including multiple screen function layers is usually turned over on the cutting machine so that the side of the screen function layer away from the substrate faces the machine, and during the cutting and hole opening process, the substrate, screen function layer and protective layer in the edge and hole opening area are removed simultaneously. Therefore, during the hole opening process, the stress around the hole is concentrated, and the extrusion generated during the hole opening will further enhance the adhesion between the protective layer around the hole and the screen function layer.

[0053] However, in the process of peeling off the protective layer, since the bonding force between the protective layer around the hole and the screen functional layer is enhanced, the peeling stress generated by the peeling also needs to increase accordingly. In addition, in the process of peeling off the protective layer, the force direction and magnitude around the hole will also change as the protective layer is gradually peeled off, further leading to uneven force on the screen functional layer around the hole, which will increase the risk of damage to the screen functional layer around the hole and affect the yield of the display panel.

[0054] For display panels that require opening holes, the opening and cutting are usually carried out simultaneously, which increases the bonding strength between the protective layer around the hole and the display panel, increases the tearing stress generated during peeling, and further causes the display panel around the hole to be damaged, affecting the yield rate of the display panel.

[0055] As shown in FIG1 , in the first aspect of the embodiment of the present application, a display panel is provided, the display panel includes a display area and a hole area, the display area surrounds the hole area, and the display panel includes: a substrate 100, a screen body function layer 200, and a protective layer 300. The screen body function layer 200 is located on one side of the substrate 100, and the screen body function 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 body function layer 200 away from the substrate 100, and the protective layer 300 is provided with a second through hole H2, the first through hole H1 is connected to the second through hole H2, 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 connected to 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 set on the surface of the protective layer 300 close to the substrate 100. However, it should be noted that setting the groove G on the surface of the protective layer 300 close to the substrate 100 will reduce the bonding area between the protective layer 300 and the screen body functional layer 200, thereby causing insufficient bonding between the protective layer 300 and the screen body functional layer 200, increasing the risk of the protective layer 300 detaching during the flipping process of the display panel, affecting the reliability and safety of the display panel preparation. In addition, setting the groove G on the surface of the protective layer 300 close to the substrate 100 will also reduce the stability of the display panel during the cutting process, reduce the accuracy of the display panel opening, and affect the yield rate of the display panel.

[0057] The display panel provided in the embodiment of the present application can protect the surface of the display panel during the cutting and opening of the display panel by setting the protective layer 300 on the side of the screen body function layer 200 away from the substrate 100, thereby preventing the display panel from being scratched. At the same time, the second through hole H2 of the protective layer 300 is connected to the first through hole H1 of the screen body function layer 200, and a groove G is set on the side of the protective layer 300 away from the screen body function layer 200, so that the groove G is connected to the second through hole H2. The thickness of the protective layer 300 around the second through hole H2 can be reduced by setting the groove G, thereby reducing the bonding force between the protective layer 300 around the second through hole H2 and the screen body function layer 200 around the first through hole H1. Further, in the process of peeling the protective layer 300, the stress generated by the peeling of the protective layer 300 on the screen body function layer 200 around the first through hole H1 can be reduced, thereby preventing the peeling of the protective layer 300 from damaging the screen body function layer 200 around the first through hole H1, further improving the surface integrity of the display panel and improving the yield rate of the display panel.

[0058] As shown in FIG. 2 , in some feasible implementations, the protection layer 300 includes a plurality of grooves G, and each groove G is disposed around the second through hole H2 .

[0059] The display panel provided in the embodiment of the present application, by setting a plurality of grooves G arranged around the second through hole H2, can further reduce the bonding force between the protective layer 300 around the second through hole H2 and the screen body function layer 200 around the first through hole H1 by increasing the total area of ​​the grooves G, and reduce the stress on the screen body function layer 200 around the first through hole H1 caused by the peeling of the protective layer 300, thereby further reducing the risk of damage to the screen body function layer 200 around the first through hole H1 caused by the peeling of the protective layer 300, thereby improving the surface integrity of the display panel and improving the yield rate of the display panel.

[0060] As shown in FIG. 2 , in some feasible implementations, a plurality of grooves G are evenly distributed around the second through hole H2 .

[0061] The display panel provided in the embodiment of the present application can improve the uniformity of force on the protective layer 300 during the cutting process by evenly arranging the grooves G, prevent the protective layer 300 around the hole area from shaking during the cutting process, and affect the quality of the hole opening. At the same time, it can further improve the uniformity of the stress generated by the peeling of the protective layer 300 on the screen function layer 200 around the first through hole H1, avoid local peeling of the screen function layer 200 around the hole area of ​​the display panel, further improve the surface integrity of the display panel, and improve the yield rate of the display panel.

[0062] As shown in FIG. 3 , in some feasible implementations, the protection layer 300 includes a plurality of grooves G, and the grooves G are symmetrically arranged about the geometric center of the second through hole H2 .

[0063] The display panel provided in the embodiment of the present application can improve the force uniformity of the protective layer 300 during the cutting process by symmetrically arranging a plurality of grooves G about the geometric center of the second through hole H2, thereby preventing the protective layer 300 around the hole area from shaking during the cutting process and affecting the quality of the opening, and at the same time can further improve the uniformity of the stress generated by the peeling of the protective layer 300 on the screen body function layer 200 around the first through hole H1, thereby avoiding local peeling of the screen body function layer 200 around the hole area of ​​the display panel, further improving the surface integrity of the display panel, and improving the yield rate of the display panel.

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

[0065] The display panel provided in the embodiment of the present application, by setting an arc-shaped groove G, can utilize the curved boundary of the groove G to change the stress transfer direction, suppress the sudden stress change of the protective layer 300 around the second through hole H2 during the peeling process, and can reduce the risk of breakage along the groove G during the peeling process of the protective layer 300. It can further improve the integrity of the protective layer 300 during the peeling process, and improve the uniformity of the force applied to the screen function 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 function layer 200 around the hole area of ​​the display panel, improving the surface integrity of the display panel, and improving the yield rate of the display panel.

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

[0067] The display panel provided in the embodiment of the present application can connect the two ends of the arc-shaped groove G with the second through hole H2, so that the opening of the arc can face the hole area, which can reduce the risk of breakage of the protective layer 300 along the groove G during the peeling process, and 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 difficulty of peeling, and avoiding multiple peeling to damage the surface integrity of the display panel. At the same time, since the openings of different grooves G are all facing the hole area, the grooves G can further reduce the influence of stresses in different directions on the screen function layer 200 around the first through hole H1 during the peeling process, which can further reduce the risk of local peeling of the screen function layer 200 around the hole area of ​​the display panel, improve the surface integrity of the display panel, and improve the yield rate of the display panel.

[0068] As shown in FIG. 4 , in some feasible implementations, the areas of the regions enclosed by at least two grooves G and the second through hole H2 are different.

[0069] The display panel provided in the embodiment of the present application can make the shapes of at least two grooves G connected to the same second through hole H2 and facing the hole area different by setting the areas of the at least two grooves G having different areas enclosed by the second through hole H2, thereby facilitating the improvement of the adjustment capability of the grooves G for the peeling stress according to the changes in the stress direction and stress magnitude during the peeling process of the protective layer 300, enhancing the uniformity of the peeling stress of the protective layer 300 around the second through hole H2 to the screen body function layer 200 around the first through hole H1, further reducing the risk of local peeling of the screen body function layer 200 around the hole area of ​​the display panel, improving the surface integrity of the display panel, and improving the yield rate of the display panel.

[0070] As shown in FIG. 5 , in some feasible implementations, the arc-shaped opening is away from the hole area, and the middle area of ​​the arc-shaped groove G is connected to the second through hole H2 .

[0071] The display panel provided in the embodiment of the present application can increase the connection area between the groove G and the second through hole H2 by setting an arc-shaped groove G with an opening away from the hole area, so that the peeling stress on the protective layer 300 around the second through hole H2 can be evenly distributed along the edge of the groove G, and can further enhance the uniformity of the peeling stress of the protective layer 300 around the second through hole H2 to the screen body function layer 200 around the first through hole H1, and further reduce the risk of local peeling of the screen body function layer 200 around the hole area of ​​the display panel, thereby improving the surface integrity of the display panel and improving the yield rate of the display panel.

[0072] As shown in FIG. 2 , in some feasible implementations, the shape of the orthographic 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 embodiment of the present application can further increase the curvature of the edge of the groove G by setting an S-shaped groove G, further enhance the ability of the groove G to adjust the peeling stress of the protective layer 300 around the second through hole H2, and suppress the sudden stress change of the protective layer 300 around the second through hole H2 during the peeling process, thereby further improving the uniformity of the force on the screen body function 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 body function layer 200 around the hole area of ​​the display panel, improving the surface integrity of the display panel, and improving the yield rate of the display panel.

[0074] In some feasible embodiments, the groove G includes two interconnected connecting segments, and the shape of the positive projections of the two connecting segments in the same groove G toward the substrate 100 is an arc with opposite opening directions; wherein the arc radius of the connecting segment is positively correlated with the aperture of the second through hole H2.

[0075] It should be noted that when the aperture of the second through hole H2 is large, the edge perimeter of the second through hole H2 is long, which will cause the peeling time of the protective layer 300 at the edge of the second through hole H2 to be prolonged during the peeling process of the protective layer 300, and further cause the peeling stress of the protective layer 300 at the edge of the second through hole H2 to accumulate, resulting in an increased risk of peeling of the screen body functional layer 200. By increasing the arc radius of the connecting section, the length of the connecting section can be increased in the radial direction of the second through hole H2, and the length of the groove G can be further increased, so that the groove G can be used to fully disperse the stress acting on the edge of the second through hole H2, reducing the risk of damage to the screen body functional layer 200 around the first through hole H1 caused by the peeling of the protective layer 300.

[0076] The display panel provided in the embodiment of the present application can be conveniently set according to the aperture of the second through hole H2 by setting the arc radius of the connecting section to be positively correlated with the aperture of the second through hole H2. For the second through hole H2 with a larger aperture, the arc radius of the connecting section can be increased accordingly. By extending the length of the groove G, the stress acting on the edge of the second through hole H2 can be fully dispersed, and the risk of damage to the screen function layer 200 around the first through hole H1 due to peeling of the protective layer 300 is reduced, the surface integrity of the display panel is improved, and the yield rate of the display panel is improved. For the second through hole H2 with a smaller aperture, the arc radius of the connecting section can be reduced accordingly, and the distance between the edge of the groove G and the edge of the protective layer 300 is increased, so as to reduce the risk of breakage of the protective layer 300, reduce the difficulty of peeling the protective layer 300, and improve the peeling efficiency of the protective layer 300, thereby improving the preparation efficiency and preparation quality of the display panel.

[0077] As shown in FIG. 6 , in some feasible implementations, the shape of the orthographic projection of the groove G toward the substrate 100 includes a ring shape.

[0078] The display panel provided in 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 annular groove G, so that in the process of peeling off the protective layer 300, the uniformity of the stress distribution at the edge of the second through hole H2 can be further improved, and the risk of local peeling of the screen functional layer 200 around the hole area of ​​the display panel can be further reduced, thereby improving the surface integrity of the display panel and improving the yield rate of the display panel.

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

[0080] It should be noted that, in the extension direction of the groove G, the depth dimension of the groove G near the second through hole H2 is greater than the depth dimension of the groove G away from the second through hole H2. During the hole opening process, the stress on the protective layer 300 near the second through hole H2 is greater, and the extrusion during the hole opening will cause the degree of bonding between the protective layer 300 near the second through hole H2 and the screen body functional layer 200 to be greater than the degree of bonding between the protective layer 300 away from the second through hole H2 and the screen body functional layer 200. By increasing the depth dimension of the groove G, the thickness of the protective layer 300 on the surface of the screen body functional layer 200 can be reduced, thereby reducing the bonding force between the protective layer 300 and the screen body functional layer 200 and reducing the stress required for peeling.

[0081] The display panel provided in the embodiment of the present application sets the depth dimension of the groove G to be negatively correlated with the extension length of the groove G from the second through hole H2, so that the depth dimension of the groove G can be conveniently set 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 dimension of the groove G can be increased to reduce the thickness of the protective layer 300 at the corresponding position, thereby reducing the bonding force between the screen body functional layer 200 and the protective layer 300 at the position, reducing the stress required for peeling, reducing the difficulty of peeling, and reducing the tensile force generated during the peeling process, thereby reducing the risk of the protective layer 300 damaging the surface integrity of the local screen body 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 dimension of the groove G can be reduced to improve the stability during the cutting process, avoid the excessive depth dimension of the groove G, resulting in insufficient support capacity of the protective layer 300 around the groove G, causing the protective layer 300 to shake with respect to the groove G, and affecting the accuracy of the opening, thereby improving the preparation quality and yield rate of the display panel.

[0082] As shown in FIG. 8 , in some feasible implementations, it is characterized in that the bottom surface of the groove G includes a slope surface; wherein the depth dimension of the groove G gradually decreases in the direction from the hole area to the display area.

[0083] The display panel provided in 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 sloped surface, and can reduce the risk of fracture of the protective layer 300. By setting the depth dimension of the groove G in the direction from the hole area to the display area, the depth dimension of the groove G gradually decreases, and by increasing the depth dimension of the groove G near one end of the hole area, the bonding force between the screen body 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, and the tensile force generated during the peeling process can be reduced, and the risk of the protective layer 300 damaging the surface integrity of the local screen body functional layer 200 is reduced. At the same time, by reducing the depth dimension of the groove G near one end of the hole area, it is possible to avoid the depth dimension of the groove G being too large, resulting in insufficient support capacity of the protective layer 300 around the groove G, causing the protective layer 300 to shake about the groove G, affecting the accuracy of the opening, thereby improving the preparation quality and yield rate of the display panel.

[0084] In some feasible implementations, the ratio of the depth dimension of the groove G to the thickness dimension of the protection layer 300 ranges from 40% to 60%.

[0085] It should be noted that if the ratio of the depth dimension of the groove G to the thickness dimension 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, which will further increase the risk of fracture of the protective layer 300 during the peeling process. If the ratio of the depth dimension of the groove G to the thickness dimension 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, resulting in the limited effect of the groove G on reducing the bonding force between the protective layer 300 and the screen body functional layer 200, further resulting in a large bonding force between the protective layer 300 and the screen body functional layer 200 during the peeling process of the protective layer 300, and an increased risk of damage to the screen body functional layer 200.

[0086] The display panel provided in the embodiment of the present application can avoid the ratio of the depth dimension of the groove G to the thickness dimension of the protective layer 300 being too large, thereby improving the fracture resistance of the protective layer 300 and the protective effect of the protective layer 300. It can also avoid the ratio of the depth dimension of the groove G to the thickness dimension of the protective layer 300 being too small, thereby reducing the stress of the screen body function layer 200 around the first through hole H1 caused by the peeling of the protective layer 300 during the peeling process of the protective layer 300, and further avoid the damage of the screen body function layer 200 around the first through hole H1 caused by the peeling of the protective layer 300, and further improve the surface integrity of the display panel 1000 and the yield rate of the display panel 1000.

[0087] As shown in FIG. 9 , a second aspect of an embodiment of the present application provides a display device, comprising: a display panel 1000 as described in any one of the first aspects above.

[0088] The display device provided in the embodiment of the present application can protect the surface of the display panel 1000 during the cutting and opening process of the display panel 1000 by setting a protective layer 300 on the side of the screen function layer 200 away from the substrate 100 to prevent the display panel 1000 from being scratched. At the same time, the second through hole H2 of the protective layer 300 is connected to the first through hole H1 of the screen body function layer 200, and a groove G is set on the side of the protective layer 300 away from the screen body function layer 200, so that the groove G is connected to the second through hole H2. The thickness of the protective layer 300 around the second through hole H2 can be reduced by setting the groove G, thereby reducing the bonding force between the protective layer 300 around the second through hole H2 and the screen body function layer 200 around the first through hole H1. Furthermore, in the process of peeling the protective layer 300, the stress generated by the peeling of the protective layer 300 on the screen body function layer 200 around the first through hole H1 can be reduced, thereby avoiding the damage of the screen body function 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 rate of the display panel 1000.

[0089] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0090] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features of the above-mentioned 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.

[0091] 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: The display panel comprises a display area and a hole area, wherein the display area surrounds the hole area, and the display panel comprises: substrate; A screen body function layer, located on one side of the substrate, the screen body function layer is provided with a first through hole, and the first through hole is located in the display area; A protective layer is located on a 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 is connected to the second through hole, and a surface of the protective layer away from the substrate is provided with at least one groove; Wherein, the groove is connected to the second through hole, and the depth of the groove is smaller than the thickness of the protective layer.

2. The display panel according to claim 1, characterized in that: The protection layer includes a plurality of grooves, and each of the grooves is arranged around the second through hole.

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

4. The display panel according to claim 1, characterized in that: The protection layer includes a plurality of grooves, and the grooves are symmetrically arranged about a geometric center of the second through hole.

5. The display panel according to claim 1, characterized in that: A shape of an orthographic projection of the groove toward the substrate includes an arc shape.

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

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

8. The display panel according to claim 5, characterized in that: The arc-shaped opening is away from the hole area, and the middle area of ​​the arc-shaped groove is connected to the second through hole.

9. The display panel according to claim 5, characterized in that: The shape of the orthographic projection of the groove toward the substrate includes an S shape, and one end of the groove is connected to the second through hole.

10. The display panel according to claim 9, characterized in that: The groove comprises two connected connecting sections, and the orthographic projections of the two connecting sections in the same groove toward the base are arcs with opposite opening directions; Wherein, the arc radius of the connecting section is positively correlated with the aperture of the second through hole.

11. The display panel according to claim 1, characterized in that: The shape of the orthographic projection of the groove toward the substrate includes a ring.

12. 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 extending length of the groove from the second through hole.

13. The display panel according to claim 1, characterized in that: The groove bottom surface of the groove includes a slope surface; Wherein, in the direction from the hole area to the display area, the depth dimension of the groove gradually decreases.

14. 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%.

15. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 14.

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