Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, and relates to the technical field of display, the display panel comprises a display area and a non-display area, and further comprises a sensor function area, the display area is internally provided with at least one display area opening, and the sensor function area surrounds the display area opening and is located between the display area and the display area opening; the display panel comprises a back plate, a packaging layer, a dielectric layer, a first flat layer and a second flat layer which are sequentially stacked, wherein the refractive index of the second flat layer is different from that of the first flat layer; the display panel comprises a first film layer and a second film layer, in the sensor function area, at least one groove is formed in the surface of the side, close to the second film layer, of the first film layer, and at least one protrusion embedded into the groove is arranged on the surface of the side, close to the first film layer, of the second film layer. The first film layer and the second film layer are respectively at least one of a back plate, a packaging layer, a dielectric layer and a first flat layer, and the second film layer and the first film layer are arranged adjacently.

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] OLED (Organic Light Emitting Diode) display technology has the characteristics of self-luminescence, wide viewing angle, wide color gamut, high contrast, light weight, foldability, bendability, light weight and easy to carry, and has become the main direction of research and development in the display field.

[0003] To increase the brightness of display screens and reduce power consumption, light-enhancing structures are often integrated into display panels. Currently, OC adhesives with different refractive indices are typically used, leveraging light refraction and reflection to improve light efficiency. However, due to the high internal stress within the OC adhesive as a flat layer, reliability failures are more likely to occur in the hole area of the display panel during the reliability test. The OC adhesive in the hole area can exacerbate the upward warping, causing separation of the film layer in the hole area and resulting in black spot defects in the display panel. Therefore, eliminating black spot defects in the hole area of display panels has become a pressing issue in the field. Summary of the Invention

[0004] The embodiments of the present application provide a display panel and a display device, aiming to solve the problem of how to eliminate black spots in the hole area of the display panel.

[0005] According to a first aspect of an embodiment of the present application, a display panel is provided, comprising a display area and a non-display area. The display panel further comprises a sensor function area, wherein at least one display area opening is defined in the display area, and the sensor function area surrounds the display area opening and is located between the display area and the display area opening. The display panel comprises:

[0006] A backplane, an encapsulation layer, a dielectric layer, a first flat layer, and a second flat layer stacked in sequence, wherein the refractive index of the second flat layer is different from the refractive index of the first flat layer;

[0007] The display panel includes a first film layer and a second film layer. In the sensor functional area, at least one groove is provided on the surface of the first film layer on the side close to the second film layer, and at least one protrusion is provided on the surface of the second film layer on the side close to the first film layer to be engaged with the groove. The first film layer and the second film layer are respectively at least one of the backplane, the packaging layer, the dielectric layer and the first flat layer, and the second film layer is arranged adjacent to the first film layer.

[0008] In an optional embodiment, the refractive index of the second flat layer is greater than the refractive index of the first flat layer;

[0009] The display area includes a pixel light-emitting area, the pixel light-emitting area includes a plurality of pixel light-emitting units arranged periodically, the first planar layer is provided with a plurality of openings corresponding to the plurality of pixel light-emitting units, and the second planar layer covers the plurality of openings of the first planar layer;

[0010] The orthographic projections of the grooves arranged in different first film layers on the back plate do not overlap with each other.

[0011] In an optional embodiment, within the sensor functional area, the display panel further includes:

[0012] A signal line, a first isolation structure, a blocking dam, and a second isolation structure are sequentially arranged at intervals on one side of the display area opening along a first direction, wherein the second isolation structure is arranged close to the display area opening, and the first direction is a direction from the center of the display area opening to the edge;

[0013] The signal line, the first isolation structure, the blocking dam, and the second isolation structure are all arranged between the packaging layer and the back plate.

[0014] In an optional embodiment, the first film layer includes the dielectric layer, and the second film layer includes the first planar layer;

[0015] The surface of the dielectric layer close to the first flat layer is provided with at least one first groove, and the surface of the first flat layer close to the dielectric layer is provided with at least one first protrusion that fits into the first groove;

[0016] In an orthographic projection of the back plate, the first groove is located between the first isolation structure and the blocking dam, and / or the first groove is located between the second isolation structure and the display area opening.

[0017] In an optional embodiment, the first groove at least partially penetrates the dielectric layer along the second direction, or,

[0018] The first groove passes through the dielectric layer and partially passes through the packaging layer along the second direction, and the second direction is an arrangement direction of the dielectric layer and the first planar layer.

[0019] In an optional embodiment, the first film layer includes the backplane, and the second film layer includes the encapsulation layer;

[0020] The backplane includes a substrate and an inorganic insulating layer provided on one side of the substrate, the inorganic insulating layer being provided close to the encapsulation layer, at least one second groove being provided on a surface of the backplane close to the encapsulation layer, the second groove partially penetrating the inorganic insulating layer along a second direction, and at least one second protrusion being provided on a surface of the encapsulation layer close to the backplane to engage with the second groove, wherein the second direction is the arrangement direction of the dielectric layer and the first planar layer;

[0021] In the orthographic projection of the back plate, the second groove is located between the first isolation structure and the blocking dam, and / or the second groove is located between the second isolation structure and the display area opening.

[0022] In an optional embodiment, the first film layer includes the encapsulation layer, and the second film layer includes the dielectric layer;

[0023] At least one third groove is provided on the surface of the packaging layer close to the dielectric layer, and the third groove partially penetrates the packaging layer along the second direction. At least one third protrusion is provided on the surface of the dielectric layer close to the packaging layer to be engaged with the third groove. The second direction is the arrangement direction of the dielectric layer and the first flat layer.

[0024] In an optional embodiment, the first isolation structure includes a plurality of first isolation columns arranged at intervals along the first direction, and the second isolation structure includes a plurality of second isolation columns arranged at intervals along the first direction;

[0025] In the orthographic projection of the back plate, the third groove is located between adjacent first isolation pillars, and / or the third groove is located between adjacent second isolation pillars.

[0026] In an optional embodiment, the first film layer is arranged on a side of the second film layer away from the back plate;

[0027] The first isolation structure and the second isolation structure each include a plurality of isolation columns spaced apart along the first direction;

[0028] In the orthographic projection of the back panel, the groove is located in a gap between adjacent two of the signal line, the first isolation structure, the blocking dam, the second isolation structure and the display area opening, and / or the groove is located between adjacent isolation columns.

[0029] A second aspect of the embodiments of the present application provides a display device, which includes a display panel as described in any one of the first aspects of the embodiments of the present application.

[0030] Beneficial effects:

[0031] An embodiment of the present application provides a display panel and a display device, comprising a display area and a non-display area, the display panel also comprising a sensor function area, at least one display area opening being opened in the display area, the sensor function area surrounding the display area opening and being located between the display area and the display area opening; the display panel comprising: a backplane, an encapsulation layer, a dielectric layer, a first flat layer and a second flat layer stacked in sequence, the refractive index of the second flat layer being different from the refractive index of the first flat layer; the display panel comprising a first film layer and a second film layer, within the sensor function area, at least one groove is provided on a surface of the first film layer on a side close to the second film layer, and at least one protrusion engaged with the groove is provided on a surface of the second film layer on a side close to the first film layer, the first film layer and the second film layer are respectively at least one of the backplane, the encapsulation layer, the dielectric layer and the first flat layer, and the second film layer is arranged adjacent to the first film layer. The present application increases the bonding force between the first film layer and the second film layer located on the side of the second flat layer by providing mutually engaging grooves and protrusions on at least some adjacent film layers between each film layer on the side of the second flat layer, thereby effectively preventing the film layer separation phenomenon caused by the film layer located on the side of the second flat layer being affected by the positive stress of the second flat layer, thereby eliminating the black spot defect in the hole area of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 This is a schematic diagram of a sensor functional area of a display panel proposed in one embodiment of the present application;

[0034] Figure 2 This is a schematic structural diagram of a display area of a display panel proposed in one embodiment of the present application;

[0035] Figure 3 1 is a schematic structural diagram of a sensor functional area in a display panel along the AA' cross section proposed in one embodiment of the present application;

[0036] Figure 4 This is a structural diagram of a display panel provided with a first groove in a sensor functional area according to an embodiment of the present application;

[0037] Figure 5 This is a schematic diagram of a structure in which a first groove penetrates a dielectric layer, as proposed in one embodiment of the present application;

[0038] Figure 6 This is a schematic diagram of a structure in which a first groove penetrates the dielectric layer and partially penetrates the packaging layer, as proposed in one embodiment of the present application;

[0039] Figure 7 This is a structural diagram of a display panel provided with a first groove and a second groove in a sensor functional area according to an embodiment of the present application;

[0040] Figure 8 This is a structural diagram of a display panel provided with a first groove, a second groove, and a third groove in a sensor functional area according to an embodiment of the present application;

[0041] Figure 9 This is a schematic structural diagram of a display panel proposed in one embodiment of the present application, in which a groove is provided in a first flat layer;

[0042] Figure 10 This is a schematic structural diagram of a display panel provided in an embodiment of the present application, in which a groove is provided in a dielectric layer;

[0043] Figure 11 This is a schematic structural diagram of a display panel provided in an embodiment of the present application, in which a groove is provided in an encapsulation layer;

[0044] Figure 12 This is a schematic structural diagram of a display panel proposed in one embodiment of the present application, in which grooves are provided in a first flat layer and a dielectric layer;

[0045] Figure 13 This is a schematic structural diagram of a display panel proposed in one embodiment of the present application, in which grooves are provided in a dielectric layer and an encapsulation layer;

[0046] Figure 14 This is a structural schematic diagram of a display panel proposed in one embodiment of the present application, in which grooves are arranged in a first flat layer, a dielectric layer and an encapsulation layer.

[0047] Explanation of the accompanying drawings: 11, backplane; 111, substrate; 112, barrier layer; 113, insulating layer; 114, dielectric layer; 12, encapsulation layer; 13, dielectric layer; 14, buffer layer; 15, touch layer pattern; 21, first flat layer; 22, second flat layer; 31, first film layer; 32, second film layer; 33, display area opening; 41, first groove; 42, second groove; 43, third groove; 51, first protrusion; 52, second protrusion; 53, third protrusion; 61, signal line; 62, isolation column; 621, first isolation column; 622, second isolation column; 63, blocking dam; 71, light-emitting layer; 72, pixel defining layer; A1, display area; A2, sensor functional area; A3, non-display area. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] In the drawings, the sizes of components, layer thicknesses, or regions may be exaggerated for clarity. Therefore, any implementation of the present disclosure is not necessarily limited to the dimensions shown in the drawings, and the shapes and sizes of components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and any implementation of the present disclosure is not limited to the shapes or values shown in the drawings.

[0050] OLED (Organic Light Emitting Diode) display technology has the characteristics of self-luminescence, wide viewing angle, wide color gamut, high contrast, light weight, foldability, bendability, light weight and easy to carry, and has become the main direction of research and development in the display field.

[0051] In related technologies, to increase the brightness of display screens and reduce power consumption, light-enhancing structures are typically integrated into display panels. Currently, OC adhesives with different refractive indices are typically used to improve light efficiency through the refraction and reflection of light. However, due to the high internal stress of the OC adhesive as a flat layer, reliability failures are prone to occur in the hole area of the display panel during the reliability test. The OC adhesive in the hole area can increase the degree of warping, causing separation of the film layer in the hole area, and resulting in black spot defects in the display panel. Therefore, how to eliminate black spot defects in the hole area of display panels has become a pressing issue in this field.

[0052] In view of this, an embodiment of the present application proposes a display panel. Figure 1 FIG. 1 shows a schematic diagram of a sensor functional area of a display panel proposed in an embodiment of the present application. Figure 1 As shown, the display panel includes a display area A1 and a non-display area A3. The display panel also includes a sensor function area A3. At least one display area opening 33 is opened in the display area A1. The sensor function area A3 surrounds the display area opening 33 and is located between the display area A1 and the display area opening 33. Figure 2 FIG. 1 shows a schematic diagram of a structure of a display panel in a display area according to an embodiment of the present application. Figure 2As shown, the display area includes a pixel light-emitting area, and the pixel light-emitting area includes a plurality of pixel light-emitting units arranged periodically. In the pixel light-emitting area of the display area A1, the display panel includes: a backplane 11; a pixel defining layer 72, the pixel defining layer 72 is arranged on one side of the backplane 11, the pixel defining layer 72 defines a plurality of pixel openings, and a light-emitting layer 71 is arranged in the pixel opening, and each pixel opening corresponds to a pixel light-emitting unit in the pixel light-emitting area; an encapsulation layer 12, the encapsulation layer 12 is on a side of the pixel defining layer 72 away from the backplane 11; a dielectric layer 13, the dielectric layer 13 is arranged on a side of the encapsulation layer 12 away from the backplane 11; a buffer layer 14, the buffer layer 14 is arranged between the dielectric layer 13 and the encapsulation layer 12.

[0053] In some optional embodiments, within the display area A1, the display panel further includes a touch layer, the touch layer including a first conductive layer and a second conductive layer stacked together, the dielectric layer 13 being disposed between the first conductive layer and the second conductive layer, and in a bridge region of the touch layer, the first conductive layer and the second conductive layer being electrically connected via conductive vias in the dielectric layer 13. The touch layer includes a plurality of touch layer patterns 15, each configured to detect a user's touch position and convert it into an electrical signal.

[0054] In an embodiment of the present application, in order to improve the light efficiency of the display panel and reduce power consumption, the display panel further includes a light efficiency enhancement structure within the display area A1. The light efficiency enhancement structure includes a first flat layer 21 and a second flat layer 22 stacked together. The first flat layer 21 is arranged on a side of the dielectric layer 13 away from the back plate 11, and the second flat layer 22 is arranged on a side of the first flat layer 21 away from the back plate 11. The refractive index of the second flat layer 22 is different from that of the first flat layer 21, so that the light emitted by the light-emitting layer 71 is totally reflected at the junction of the first flat layer 21 and the second flat layer 22, thereby effectively improving the light efficiency.

[0055] In some optional embodiments, the refractive index of the second flat layer 22 is greater than the refractive index of the first flat layer 21; the first flat layer 21 is provided with a plurality of openings corresponding to the plurality of pixel light-emitting units, and the second flat layer 22 covers the plurality of openings of the first flat layer 21.

[0056] In the embodiment of this application, Figure 1 As shown, at least one display area opening 33 is provided in the sensor functional area A2 , and the display area opening 33 is used to integrate sensors to realize a borderless design of the display panel. Figure 3FIG. 1 shows a schematic structural diagram of a sensor functional area in a display panel along the AA' cross section according to an embodiment of the present application. Figure 3 As shown, in the sensor functional area A2, the display panel includes: the backplane 11, the encapsulation layer 12 and the dielectric layer 13 stacked in sequence. Compared with the display area A1, the light-emitting layer 71 and the pixel defining layer 72 are not provided in the sensor functional area A2.

[0057] In the sensor functional area A2, the need to provide the display area opening 33 results in a large positive stress on the second flat layer 22 located within the display area opening 33. During the reliability test, the second flat layer 22 of the display panel will experience severe warping, which in turn causes film separation between the film layers (including but not limited to the backplane 11, the encapsulation layer 12, the dielectric layer 13, and the first flat layer 21) located on the backlight side of the second flat layer 22. This results in poor hole black spots on the display panel, affecting the display effect. In this embodiment of the present application, corresponding protrusions and grooves are provided on adjacent film layers on the backlight side of the second flat layer 22. The adjacent film layers are interlocked with each other through the grooves and protrusions to form a mortise and tenon structure, thereby enhancing the bonding force between the adjacent film layers and preventing film separation.

[0058] Specifically, Figure 4 FIG. 1 shows a schematic diagram of a structure in which a first groove is provided in a sensor functional area of a display panel according to an embodiment of the present application. Figure 4 As shown, the display panel includes a first film layer 31 and a second film layer 32. In the sensor functional area A2, at least one groove is provided on the surface of the first film layer 31 close to the second film layer 32, and at least one protrusion is provided on the surface of the second film layer 32 close to the first film layer 31 for engaging with the groove. The first film layer 31 and the second film layer 32 are respectively at least one of the back panel 11, the encapsulation layer 12, the dielectric layer 13 and the first flat layer 14, and the second film layer 32 is arranged adjacent to the first film layer 31.

[0059] In some optional embodiments, within the sensor functional area A2, the display panel further includes: a signal line 61, a first isolation structure, a blocking dam 63, and a second isolation structure, which are sequentially spaced along a first direction on one side of the display area opening 33, with the second isolation structure being disposed proximate to the display area opening 33. The first direction is from the center of the display area opening 33 to the edge thereof. The signal line 61, the first isolation structure, the blocking dam 63, and the second isolation structure are all disposed between the encapsulation layer 12 and the backplane 11. The orthographic projections of the grooves of the first film layer 31 and the protrusions of the second film layer 32 on the backplane 11 are located between the signal line 61 and the orthographic projection of the display area opening 33 on the backplane 11.

[0060] In some optional embodiments, the orthographic projections of the grooves provided in different first film layers 31 on the back plate 11 may overlap or partially overlap. Optionally, to improve the fixing effect between adjacent film layers, the orthographic projections of the grooves provided in different first film layers 31 on the back plate 11 do not overlap with each other.

[0061] In some optional embodiments, the width of the groove gradually decreases along the second direction. Optionally, the cross-sectional shape of the groove can be trapezoidal, V-shaped or other shapes whose width gradually decreases along the second direction.

[0062] In some optional embodiments, the number of grooves in the same first film layer 31 is greater than or equal to 2, and the number of protrusions in the second film layer 32 corresponding to the first film layer 31 is the same as the number of grooves in the first film layer 31 .

[0063] In some optional embodiments, such as Figure 4 As shown, the first film layer 31 includes the dielectric layer 13, and the second film layer 32 includes the first flat layer 21; at least one first groove 41 is provided on the surface of the dielectric layer 13 near the first flat layer 21, and at least one first protrusion 51 corresponding to the first groove 41 is provided on the surface of the first flat layer 21 near the dielectric layer 13. The first protrusion 51 is engaged with the first groove 41 to enhance the bonding force between the dielectric layer 13 and the first flat layer 21, thereby preventing the second flat layer 22 from warping and causing film separation between the dielectric layer 13 and the first flat layer 21.

[0064] Optionally, to prevent the blocking dam 63 and the isolation structure from affecting the arrangement of the first groove 41, the first groove 41 is positioned away from the blocking dam 63 and the isolation structure. Specifically, in an orthographic projection of the back plate 11, the first groove 41 is located between the first isolation structure and the blocking dam 63, and / or between the second isolation structure and the display area opening 33.

[0065] In some optional embodiments, the first groove 41 at least partially penetrates the dielectric layer 13 along the second direction, and the second direction is the arrangement direction of the dielectric layer 13 and the first flat layer 21. Specifically, Figure 4 As shown, the first groove 41 partially penetrates the dielectric layer 13 along the second direction; Figure 5 FIG. 1 shows a schematic structural diagram of a first groove penetrating a dielectric layer according to an embodiment of the present application. Figure 5 As shown, the first groove 41 penetrates the dielectric layer 13 along the second direction.

[0066] Optionally, in order to further enhance the bonding strength between the first groove 41 and the first protrusion 51, Figure 6 FIG. 1 shows a schematic structural diagram of a first groove penetrating the dielectric layer and partially penetrating the packaging layer, as proposed in an embodiment of the present application. Figure 6 As shown, the first groove 41 penetrates the dielectric layer 13 along the second direction and partially penetrates the packaging layer 12 .

[0067] In some optional embodiments, Figure 7 FIG. 1 shows a schematic diagram of a structure in which a first groove and a second groove are provided in a sensor functional area of a display panel according to an embodiment of the present application. Figure 7 As shown, the first film layer 31 includes the backplane 11, and the second film layer 32 includes the encapsulation layer 12. The backplane 11 includes a substrate 111 and an inorganic insulating layer disposed on one side of the substrate 111. At least one second groove 42 is disposed on the surface of the backplane 11 near the encapsulation layer 12. The second groove 42 partially penetrates the inorganic insulating layer along the second direction. The surface of the encapsulation layer 12 near the backplane 11 is provided with at least one second protrusion 52 that engages with the second groove 42. The second protrusion 52 engages with the second groove 42 to enhance the bonding force between the backplane 11 and the encapsulation layer 12, preventing warping of the second flat layer 22 and film separation between the backplane 11 and the encapsulation layer 12.

[0068] It should be noted that the first film layer 31 may only include the back plate 11. In this case, the second film layer 32 is the encapsulation layer 12 disposed adjacent to the back plate 11. The back plate 11 is provided with a second groove 42, and the encapsulation layer 12 is provided with a second protrusion 52. The second protrusion 52 and the second groove 42 enhance the bonding force between the encapsulation layer 12 and the back plate 11. Figure 7 As shown, the first film layer 31 may also include the backplane 11 and the dielectric layer 13, the second film layer 32 corresponding to the backplane 11 is the encapsulation layer 12, and the second film layer 32 corresponding to the dielectric layer 13 is the first flat layer 21, and the bonding force between the dielectric layer 13 and the first flat layer 21 is enhanced by the first protrusion 51 and the first groove 41, and the bonding force between the encapsulation layer 12 and the backplane 11 is enhanced by the second protrusion 52 and the second groove 42.

[0069] Optionally, to prevent the blocking dam 63 and the isolation structure from affecting the arrangement of the second groove 42, the second groove 42 avoids the position of the blocking dam 63 and the isolation structure. Specifically, in the orthographic projection of the back plate 11, the second groove 42 is located between the first isolation structure and the blocking dam 63, and / or between the second isolation structure and the display area opening 33.

[0070] In some optional embodiments, such as Figure 7 As shown, the inorganic insulating layer includes a barrier layer 112, an insulating layer 113, and a dielectric layer 114 stacked in sequence. The dielectric layer 114 is disposed near the encapsulation layer 12 relative to the substrate 111. The second groove 42 penetrates the dielectric layer 114 and partially penetrates the insulating layer 113.

[0071] In some optional embodiments, Figure 8 FIG. 1 shows a schematic structural diagram of a display panel provided with a first groove, a second groove, and a third groove in a sensor functional area according to an embodiment of the present application. Figure 8As shown, the first film layer 31 includes the encapsulation layer 12, and the second film layer 32 includes the dielectric layer 13; at least one third groove 43 is provided on the surface of the encapsulation layer 12 close to the dielectric layer 13, and the third groove 43 partially penetrates the encapsulation layer 12 along the second direction; at least one third protrusion 53 is provided on the surface of the dielectric layer 13 close to the encapsulation layer 12, which is engaged with the third groove 43, and the third protrusion 53 is engaged with the third groove 43 to enhance the bonding force between the dielectric layer 13 and the encapsulation layer 12, thereby preventing the second flat layer 22 from warping and causing film separation between the dielectric layer 13 and the encapsulation layer 12.

[0072] In some optional embodiments, the encapsulation layer 12 includes a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer. The third groove formed by the encapsulation layer 12 can be a groove located on the second inorganic encapsulation layer or a groove located on the organic encapsulation layer.

[0073] It should be noted that the first film layer 31 may include only the encapsulation layer 12, or the encapsulation layer 12 and the backplane 11, or the encapsulation layer 12 and the dielectric layer 13, or the encapsulation layer 12, the dielectric layer 13 and the backplane 11 at the same time. Figure 8 For example, the first film layer 31 includes the encapsulation layer 12, the dielectric layer 13 and the backplane 11 at the same time. At this time, the second film layer 32 corresponding to the backplane 11 is the encapsulation layer 12, the second film layer 32 corresponding to the dielectric layer 13 is the first flat layer 21, and the second film layer 32 corresponding to the encapsulation layer 12 is the dielectric layer 13. The bonding force between the dielectric layer 13 and the first flat layer 21 is enhanced by the first protrusion 51 and the first groove 41, the bonding force between the encapsulation layer 12 and the backplane 11 is enhanced by the second protrusion 52 and the second groove 42, and the bonding force between the encapsulation layer 12 and the dielectric layer 13 is enhanced by the third protrusion 53 and the third groove 43.

[0074] In some optional embodiments, such as Figure 4 As shown, the first isolation structure includes a plurality of first isolation columns 621 spaced apart along the first direction, and the second isolation structure includes a plurality of second isolation columns 622 spaced apart along the first direction. To prevent the isolation columns from interfering with the third groove 43, the third groove 43 is positioned away from the isolation columns. Specifically, in an orthographic projection of the backplate 11, the third groove 43 is located between adjacent first isolation columns 621 and / or between adjacent second isolation columns 622.

[0075] In some optional embodiments, the first film layer 31 may also be disposed on a side of the second film layer 32 away from the back plate 11 . Figure 9 FIG. 1 shows a schematic diagram of a structure in which a groove is provided in a first flat layer in a display panel according to an embodiment of the present application. Figure 9 As shown, the first isolation structure and the second isolation structure each include a plurality of isolation columns 62 (including first isolation columns 621 and second isolation columns 622) spaced apart along the first direction; in the orthographic projection of the backplate 11, the groove is located within the gap between two adjacent ones of the signal line 61, the first isolation structure, the blocking dam 63, the second isolation structure, and the display area opening 33, and / or the groove is located between adjacent isolation columns 62. It should be noted that when the groove is located between adjacent isolation columns 62, the width of the groove along the first direction is smaller than the width of the gap between adjacent isolation columns.

[0076] In some optional embodiments, such as Figure 9 As shown, the first film layer 31 includes a first flat layer 21, and the second film layer 32 includes a dielectric layer 13. The first film layer 31 is provided with a groove, and the second film layer 32 is provided with a protrusion that engages with the groove. The groove partially penetrates the first flat layer 21. The dielectric layer 13 and the first flat layer 21 enhance the bonding force through the engagement of the groove and the protrusion, thereby avoiding film layer separation.

[0077] In some optional embodiments, Figure 10 FIG. 1 shows a schematic diagram of a structure in which a groove is provided in a dielectric layer in a display panel according to an embodiment of the present application. Figure 10 As shown, the first film layer 31 includes a dielectric layer 13, and the second film layer 32 includes an encapsulation layer 12. The first film layer 31 is provided with a groove, and the second film layer 32 is provided with a protrusion that engages with the groove. The groove partially penetrates the dielectric layer 13. The dielectric layer 13 and the encapsulation layer 12 enhance the bonding force through the engagement of the groove and the protrusion, thereby avoiding film layer separation.

[0078] In some optional embodiments, Figure 11 FIG. 1 shows a schematic diagram of a structure in which a groove is provided in a packaging layer in a display panel according to an embodiment of the present application. Figure 11 As shown, the first film layer 31 includes an encapsulation layer 12, and the second film layer 32 includes a backplane 11. The first film layer 31 is provided with a groove, and the second film layer 32 is provided with a protrusion that engages with the groove. The groove partially penetrates the encapsulation layer 12. The backplane 11 and the encapsulation layer 12 enhance the bonding force by the engagement of the groove and the protrusion, thereby avoiding separation of the film layers.

[0079] In some optional embodiments, the first film layer 31 includes any two of the encapsulation layer 12, the dielectric layer 13, and the backplane 11. Figure 12 FIG. 1 shows a schematic structural diagram of a display panel according to an embodiment of the present application in which grooves are provided in a first flat layer and a dielectric layer. Figure 12 As shown, the first film layer 31 includes a first flat layer 21 and a dielectric layer 13, the second film layer 32 corresponding to the first flat layer 21 is the dielectric layer 13, and the second film layer 32 corresponding to the dielectric layer 13 is the encapsulation layer 12, wherein the first flat layer 21 and the dielectric layer 13 are both provided with grooves, and the dielectric layer 13 and the encapsulation layer 12 are both provided with protrusions that fit into the grooves. The first flat layer 21 and the dielectric layer 13 are enhanced in bonding strength by the fit of the grooves and the protrusions, and the dielectric layer 13 and the encapsulation layer 12 are enhanced in bonding strength by the fit of the grooves and the protrusions, thereby preventing film separation between the dielectric layer 13 and the encapsulation layer 12, and between the dielectric layer 13 and the first flat layer 21.

[0080] Optionally, Figure 13 FIG. 1 shows a schematic structural diagram of a display panel in which grooves are provided in a dielectric layer and an encapsulation layer according to an embodiment of the present application. Figure 13 As shown, the first film layer 31 includes an encapsulation layer 12 and a dielectric layer 13, the second film layer 32 corresponding to the encapsulation layer 12 is the backplane 11, and the second film layer 32 corresponding to the dielectric layer 13 is the encapsulation layer 12, wherein the encapsulation layer 12 and the dielectric layer 13 are both provided with grooves, and the backplane 11 and the encapsulation layer 12 are both provided with protrusions that engage with the grooves, and the encapsulation layer 12 and the dielectric layer 13 enhance the bonding force by engaging with the grooves and the protrusions, and the backplane 11 and the encapsulation layer 12 enhance the bonding force by engaging with the grooves and the protrusions, thereby avoiding film separation between the encapsulation layer 12 and the dielectric layer 13, and between the encapsulation layer 12 and the backplane 11.

[0081] In some optional embodiments, Figure 14 FIG. 1 shows a schematic structural diagram of a display panel proposed in an embodiment of the present application in which grooves are arranged in a first flat layer, a dielectric layer and an encapsulation layer, as shown in FIG. Figure 14As shown, the first film layer 31 includes a first flat layer 21, an encapsulation layer 12 and a dielectric layer 13, the second film layer 32 corresponding to the first flat layer 21 is the dielectric layer 13, the second film layer 32 corresponding to the encapsulation layer 12 is the backplane 11, and the second film layer 32 corresponding to the dielectric layer 13 is the encapsulation layer 12, wherein the first flat layer 21, the encapsulation layer 12 and the dielectric layer 13 are all provided with grooves, and the dielectric layer 13, the backplane 11 and the encapsulation layer 12 are all provided with protrusions that fit into the grooves, the first flat layer 21 and the dielectric layer 13 are enhanced in bonding strength by the fitting of the grooves and the protrusions, the encapsulation layer 12 and the dielectric layer 13 are enhanced in bonding strength by the fitting of the grooves and the protrusions, and the backplane 11 and the encapsulation layer 12 are enhanced in bonding strength by the fitting of the grooves and the protrusions, thereby preventing film separation between the first flat layer 21 and the dielectric layer 13, between the encapsulation layer 12 and the dielectric layer 13, and between the encapsulation layer 12 and the backplane 11.

[0082] An embodiment of the present application provides a display panel and a display device, comprising a display area and a non-display area, the display panel also comprising a sensor function area, at least one display area opening being opened in the display area, the sensor function area surrounding the display area opening and being located between the display area and the display area opening; the display panel comprising: a backplane, an encapsulation layer, a dielectric layer, a first flat layer and a second flat layer stacked in sequence, the refractive index of the second flat layer being different from the refractive index of the first flat layer; the display panel comprising a first film layer and a second film layer, within the sensor function area, at least one groove is provided on a surface of the first film layer on a side close to the second film layer, and at least one protrusion engaged with the groove is provided on a surface of the second film layer on a side close to the first film layer, the first film layer and the second film layer are respectively at least one of the backplane, the encapsulation layer, the dielectric layer and the first flat layer, and the second film layer is arranged adjacent to the first film layer. The present application increases the bonding force between the first film layer and the second film layer located on the side of the second flat layer by providing mutually engaging grooves and protrusions on at least some adjacent film layers between each film layer on the side of the second flat layer, thereby effectively preventing the film layer separation phenomenon caused by the film layer located on the side of the second flat layer being affected by the positive stress of the second flat layer, thereby eliminating the black spot defect in the hole area of the display panel.

[0083] Based on the same inventive concept, an embodiment of the present application discloses a display device, which includes the display panel described in the embodiment of the present application.

[0084] In some optional embodiments, the display device is a product with an image display function. Optionally, the display device can be used to display static images, such as pictures, photos, etc.; the display device can also be used to display dynamic images, such as videos, game screens, etc.

[0085] In some optional embodiments, the display device includes but is not limited to a laptop computer, a mobile phone, a wireless device, a personal data assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat panel display, a computer monitor, a car display, a navigation system, a cockpit controller and / or display, a display of a camera view, an electronic photograph, an electronic billboard or sign, a projector, packaging and aesthetic structures, etc.

[0086] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0087] In the description of this specification, it should be understood that the terms "center", "thickness", "up", "down", "front", "back", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0088] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0089] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0090] The above application provides many different embodiments or examples for implementing the different structures of the present application. In order to simplify the present application, the components and settings of specific examples are described above. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0091] References herein to "one embodiment," "an embodiment," or "one or more embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Furthermore, please note that instances of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0092] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0093] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "comprises a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0094] The above is a detailed introduction to a display panel and a display device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a non-display area, the display panel also includes a sensor function area, at least one display area opening is opened in the display area, the sensor function area surrounds the display area opening and is located between the display area and the display area opening; the display panel includes: A backplane, an encapsulation layer, a dielectric layer, a first flat layer, and a second flat layer stacked in sequence, wherein the refractive index of the second flat layer is different from the refractive index of the first flat layer; The display panel includes a first film layer and a second film layer. In the sensor functional area, at least one groove is provided on the surface of the first film layer on the side close to the second film layer, and at least one protrusion is provided on the surface of the second film layer on the side close to the first film layer to be engaged with the groove. The first film layer and the second film layer are respectively at least one of the backplane, the packaging layer, the dielectric layer and the first flat layer, and the second film layer is arranged adjacent to the first film layer.

2. The display panel according to claim 1, wherein: The refractive index of the second flat layer is greater than the refractive index of the first flat layer; The display area includes a pixel light-emitting area, the pixel light-emitting area includes a plurality of pixel light-emitting units arranged periodically, the first planar layer is provided with a plurality of openings corresponding to the plurality of pixel light-emitting units, and the second planar layer covers the plurality of openings of the first planar layer; The orthographic projections of the grooves arranged in different first film layers on the back plate do not overlap with each other.

3. The display panel according to claim 1, wherein: In the sensor functional area, the display panel further includes: A signal line, a first isolation structure, a blocking dam, and a second isolation structure are sequentially arranged at intervals on one side of the display area opening along a first direction, wherein the second isolation structure is arranged close to the display area opening, and the first direction is a direction from the center of the display area opening to the edge; The signal line, the first isolation structure, the blocking dam, and the second isolation structure are all arranged between the packaging layer and the back plate.

4. The display panel according to claim 3, wherein: The first film layer includes the dielectric layer, and the second film layer includes the first planar layer; The surface of the dielectric layer close to the first flat layer is provided with at least one first groove, and the surface of the first flat layer close to the dielectric layer is provided with at least one first protrusion that fits into the first groove; In an orthographic projection of the back plate, the first groove is located between the first isolation structure and the blocking dam, and / or the first groove is located between the second isolation structure and the display area opening.

5. The display panel according to claim 4, wherein: The first groove at least partially penetrates the dielectric layer along the second direction, or, The first groove passes through the dielectric layer and partially passes through the packaging layer along the second direction, and the second direction is an arrangement direction of the dielectric layer and the first planar layer.

6. The display panel according to claim 3, wherein: The first film layer includes the backplane, and the second film layer includes the encapsulation layer; The backplane includes a substrate and an inorganic insulating layer provided on one side of the substrate, the inorganic insulating layer being provided close to the encapsulation layer, at least one second groove being provided on a surface of the backplane close to the encapsulation layer, the second groove partially penetrating the inorganic insulating layer along a second direction, and at least one second protrusion being provided on a surface of the encapsulation layer close to the backplane to engage with the second groove, wherein the second direction is the arrangement direction of the dielectric layer and the first planar layer; In the orthographic projection of the back plate, the second groove is located between the first isolation structure and the blocking dam, and / or the second groove is located between the second isolation structure and the display area opening.

7. The display panel according to claim 3, wherein: The first film layer includes the encapsulation layer, and the second film layer includes the dielectric layer; At least one third groove is provided on the surface of the packaging layer close to the dielectric layer, and the third groove partially penetrates the packaging layer along the second direction. At least one third protrusion is provided on the surface of the dielectric layer close to the packaging layer to be engaged with the third groove. The second direction is the arrangement direction of the dielectric layer and the first flat layer.

8. The display panel according to claim 7, wherein: The first isolation structure includes a plurality of first isolation columns arranged at intervals along the first direction, and the second isolation structure includes a plurality of second isolation columns arranged at intervals along the first direction; In the orthographic projection of the back plate, the third groove is located between adjacent first isolation pillars, and / or the third groove is located between adjacent second isolation pillars.

9. The display panel according to claim 3, wherein: The first film layer is arranged on a side of the second film layer away from the back plate; The first isolation structure and the second isolation structure each include a plurality of isolation columns spaced apart along the first direction; In the orthographic projection of the back panel, the groove is located in a gap between adjacent two of the signal line, the first isolation structure, the blocking dam, the second isolation structure and the display area opening, and / or the groove is located between adjacent isolation columns.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

Images