Display panel and display device

Abstract

The present disclosure relates to the technical field of display. Disclosed are a display panel and a display device. The display panel is provided with a display area and a non-display area, and the non-display area is arranged around the display area. The display panel comprises a base substrate, a display backplane, a frit layer, and a cover plate. The display backplane is arranged on one side of the base substrate. In the non-display area, the display backplane comprises a substrate layer, a curved recess and dot-shaped recesses are formed in the substrate layer, and the curved recess and the dot-shaped recesses are arranged around the display area. The frit layer is at least bonded to the side of the substrate layer facing away from the base substrate, a curved protruding portion and dot-shaped protruding portions are arranged on the surface of the frit layer close to the base substrate, the curved protruding portion is bonded into the curved recess, and the dot-shaped protruding portions are bonded into the dot-shaped recesses. The cover plate is bonded to the side of the frit layer facing away from the base substrate. The display panel has a better packaging effect.

Description

Display panel and display device

[0001] Cross-references

[0002] This disclosure claims priority to Chinese patent application number 202311624068.2, filed on November 30, 2023, entitled “Display Panel and Display Device,” and the entire contents of this Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of display technology, and in particular, to a display panel and a display device including the display panel. Background Art

[0004] OLED (Organic Light Emitting Diode) display devices have the characteristics of low power consumption, wide viewing angle, fast response speed, ultra-lightness and good shock resistance. They have a wide operating temperature range and can achieve flexible display and large-area full-color display, among other advantages. They are considered to be the display device with the most development potential.

[0005] The metal and organic functional layers in OLED display backplanes are extremely sensitive to moisture and oxygen. If moisture and oxygen penetrate the backplane, their performance deteriorates and their luminous lifespan is significantly shortened. Therefore, encapsulation of OLED display backplanes is essential. However, current encapsulation of OLED display backplanes is suboptimal, making encapsulation failure a common problem.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0007] Summary of the Invention

[0008] The purpose of the present disclosure is to overcome the above-mentioned deficiencies in the prior art and to provide a display panel and a display device including the display panel.

[0009] According to one aspect of the present disclosure, a display panel is provided, comprising a display area and a non-display area, wherein the non-display area is arranged around the display area, the display panel comprising:

[0010] substrate;

[0011] A display backplane is provided on one side of the base substrate. In the non-display area, the display backplane includes a base layer, and the base layer is provided with curved grooves and dot-shaped grooves, and the curved grooves and the dot-shaped grooves are provided around the display area.

[0012] a glass adhesive layer, bonded to at least one side of the base layer facing away from the base substrate, wherein a side of the glass adhesive layer close to the base substrate is provided with a curved protrusion and a dot-shaped protrusion, wherein the curved protrusion is bonded to the curved groove, and the dot-shaped protrusion is bonded to the dot-shaped groove;

[0013] The cover plate is bonded to the side of the glass adhesive layer facing away from the base substrate.

[0014] In an exemplary embodiment of the present disclosure, the curved groove surrounds at least a portion of the dot-shaped groove, and the curved protrusion surrounds at least a portion of the dot-shaped protrusion.

[0015] In an exemplary embodiment of the present disclosure, the curved groove and the curved protrusion are provided as a continuous structure, and are provided around the display area in at least one circle.

[0016] In an exemplary embodiment of the present disclosure, the curved grooves and the curved protrusions are arranged in at least two circles around the display area, and at least two circles of the curved grooves are arranged in parallel, and at least two circles of the curved protrusions are arranged in parallel.

[0017] In an exemplary embodiment of the present disclosure, the curved groove includes a plurality of curved sub-grooves arranged at intervals, and the plurality of curved sub-grooves are arranged around the display area in at least one circle; the curved protrusion includes a plurality of curved sub-protrusions arranged at intervals, and the plurality of curved sub-protrusions are arranged around the display area in at least one circle.

[0018] In an exemplary embodiment of the present disclosure, a plurality of the curved sub-grooves are arranged in at least two circles around the display area, a groove spacer is arranged between two adjacent curved sub-grooves located in the same circle, and the curved sub-grooves of one of the two adjacent circles are arranged opposite to the groove spacers of the other circle; a plurality of the curved sub-protrusions are arranged in at least two circles around the display area, a spacer is arranged between two adjacent curved sub-protrusions located in the same circle, and the curved sub-protrusions of one of the two adjacent circles are arranged opposite to the spacers of the other circle.

[0019] In an exemplary embodiment of the present disclosure, the curved groove includes a curved groove unit, which is configured as a circular ring, an elliptical ring, a polygonal ring, an arc or a broken line structure; the curved protrusion includes a curved protrusion unit, which is configured as a circular ring, an elliptical ring, a polygonal ring, an arc or a broken line structure.

[0020] In an exemplary embodiment of the present disclosure, the curved groove includes at least two curved groove units connected to each other in sequence, and the two adjacent curved groove units are axially symmetrically arranged or center-symmetrically arranged, the axis of symmetry is the first dividing line of the two adjacent curved groove units, and the center of symmetry is the midpoint of the first dividing line; the curved protrusion includes at least two curved protrusion units connected to each other in sequence, and the two adjacent curved protrusion units are axially symmetrically arranged or center-symmetrically arranged, the axis of symmetry is the second dividing line of the two adjacent curved protrusion units, and the center of symmetry is the midpoint of the second dividing line.

[0021] In an exemplary embodiment of the present disclosure, the plurality of dot-shaped grooves located on the same side of the display area are arranged in at least one straight line, and the plurality of dot-shaped protrusions located on the same side of the display area are arranged in at least one straight line.

[0022] In an exemplary embodiment of the present disclosure, the distance between two adjacent dot-shaped grooves located on the same straight line is the same, and the distance between two adjacent dot-shaped protrusions located on the same straight line is the same.

[0023] In an exemplary embodiment of the present disclosure, the groove width of the curved groove is greater than or equal to 5 microns and less than or equal to 50 microns, and the wall thickness of the curved protrusion is greater than or equal to 5 microns and less than or equal to 50 microns.

[0024] In an exemplary embodiment of the present disclosure, in a first direction, the maximum size of the dot-shaped groove is greater than or equal to 10 microns and less than or equal to 80 microns, and the maximum size of the dot-shaped protrusion is greater than or equal to 10 microns and less than or equal to 80 microns, and the first direction is parallel to a side of the base substrate on which the display back panel is set.

[0025] In an exemplary embodiment of the present disclosure, when the dot-shaped grooves and the dot-shaped protrusions are arranged in an annular shape, the annular width of the dot-shaped grooves is greater than or equal to 5 microns and less than or equal to 30 microns, and the annular width of the dot-shaped protrusions is greater than or equal to 5 microns and less than or equal to 30 microns.

[0026] In an exemplary embodiment of the present disclosure, in the second direction, the depth of the curved groove is greater than or equal to 300 nanometers and less than or equal to 700 nanometers, and the height of the curved protrusion is greater than or equal to 300 nanometers and less than or equal to 700 nanometers; the depth of the point-shaped groove is greater than or equal to 300 nanometers and less than or equal to 700 nanometers, and the height of the point-shaped protrusion is greater than or equal to 300 nanometers and less than or equal to 700 nanometers, and the second direction is perpendicular to the side of the base substrate on which the display back panel is set.

[0027] In an exemplary embodiment of the present disclosure, the cross-section of the dot-shaped groove parallel to the substrate is set to be circular, polygonal, elliptical, annular, polygonal ring, or elliptical ring; the cross-section of the dot-shaped protrusion parallel to the substrate is set to be cylindrical, polygonal, elliptical, annular, polygonal ring, or elliptical ring.

[0028] In an exemplary embodiment of the present disclosure, the display backplane includes:

[0029] a buffer layer, disposed on one side of the base substrate;

[0030] an active layer, disposed on a side of the buffer layer facing away from the base substrate;

[0031] a gate insulating layer, provided on a side of the active layer facing away from the base substrate;

[0032] a gate layer, disposed on a side of the gate insulating layer facing away from the base substrate;

[0033] an interlayer dielectric layer, disposed on a side of the gate layer facing away from the substrate;

[0034] A first connecting conductor layer is provided on a side of the interlayer dielectric layer facing away from the base substrate;

[0035] The base layer includes a metal base, and the metal base is provided in the same layer and the same material as at least one of the gate layer and the first connecting conductor layer.

[0036] In an exemplary embodiment of the present disclosure, the base layer further includes at least one of the buffer layer, the gate insulating layer, and the interlayer dielectric layer.

[0037] According to another aspect of the present disclosure, a display device is provided, comprising any one of the display panels described above.

[0038] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0040] FIG1 is a schematic diagram of the packaging structure of the glass adhesive layer, the base substrate and the cover plate in the related art.

[0041] FIG. 2 is a schematic top view of the second via hole and the third via hole after being formed in FIG. 1 .

[0042] FIG3 is a cross-sectional schematic diagram of an exemplary embodiment of a display panel according to the present disclosure and related technologies.

[0043] FIG. 4 is a schematic top view of an exemplary embodiment of a display panel according to the present disclosure.

[0044] FIG. 5 is a schematic structural diagram of the display backplane in the display area in FIG. 3 .

[0045] FIG. 6 is a schematic structural diagram of the display backplane in the non-display area in FIG. 3 .

[0046] FIG. 7 is a schematic top view of another exemplary embodiment of a display panel according to the present disclosure.

[0047] FIG8 is a schematic structural diagram of the glass adhesive layer in FIG6 .

[0048] FIG9 is a schematic cross-sectional view of the glass adhesive layer in FIG8 .

[0049] FIG. 10 is a schematic diagram of a partial structure of a non-display area of ​​the display panel in FIG. 4 .

[0050] FIG11 is a schematic diagram of the force analysis of the protruding portion of the curve in FIG10 .

[0051] FIG12 is a schematic structural diagram of a second exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0052] FIG13 is a schematic structural diagram of a third exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0053] FIG14 is a schematic structural diagram of a fourth exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0054] FIG15 is a schematic structural diagram of a fifth exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0055] FIG16 is a schematic structural diagram of a sixth exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0056] FIG17 is a schematic structural diagram of a seventh exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0057] FIG18 is a schematic structural diagram of an eighth exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0058] FIG19 is a schematic structural diagram of a ninth exemplary embodiment of curved grooves, dot-shaped grooves, curved protrusions, and dot-shaped protrusions in a display panel of the present disclosure.

[0059] Description of reference numerals:

[0060] 1. Base substrate; 10. Display backplane;

[0061] 2. Drive substrate; 21. Light shielding layer; 22. Buffer layer; 231. Channel portion; 232. Source connection portion; 233. Drain connection portion; 24. Gate insulation layer; 25. Gate layer; 251. Gate; 26. Interlayer dielectric layer; 261. Second via hole; 262. Third via hole; 27. First connecting conductor layer; 271. Source electrode; 272. Drain electrode; 28. Planarization layer;

[0062] 3. Light-emitting substrate; 31. First electrode; 32. Pixel definition layer; 33. Light-emitting layer group; 34. Second electrode; 35. Sub-pixel;

[0063] 4. Base layer; 41. Curved groove; 411. Curved sub-groove; 412. Groove spacer; 413. Curved groove unit; 42. Dot-shaped groove; 4a. Metal base; 4a1. First via hole;

[0064] 5. Glass adhesive layer; 5a. Effective portion; 5b. Overflow diffusion portion; 51. Curved protrusion; 511. Curved sub-protrusion; 512. Spacer; 513. Curved protrusion unit; 52. Dot-shaped protrusion;

[0065] 6. Cover plate; 7. Support structure;

[0066] AA, display area; NA, non-display area; CB1, first side area; CB2, second side area; CB3, third side area; CB4, fourth side area; BOD, binding area;

[0067] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0068] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0069] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0070] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0071] In this application, unless otherwise specified or limited, the term "connected" should be understood broadly. For example, "connected" can mean fixed, removable, or integrated; it can be directly connected or indirectly connected through an intermediary. "And / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0072] 1 to 3 , in the related art, a display backplane 10 is provided on one side of a base substrate 1. In the non-display area NA, the display backplane 10 includes a buffer layer 22 and a gate insulating layer 24 stacked in sequence. A metal base 4a is provided on the side of the gate insulating layer 24 facing away from the base substrate 1, and a first via hole 4a1 is provided on the metal base 4a. An interlayer dielectric layer 26 is provided on the side of the metal base 4a facing away from the base substrate 1, and a portion of the interlayer dielectric layer 26 is located in the first via hole 4a1 of the metal base 4a. A second via hole 261 is provided on the interlayer dielectric layer 26 located in the first via hole 4a1, and the second via hole 261 is smaller than the first via hole 4a1. The second via hole 261 may pass through the entire interlayer dielectric layer 26 or only pass through a portion of the interlayer dielectric layer 26. A plurality of third via holes 262 arranged in an array are provided at the bottom of the second via hole 261. The third via holes 262 are smaller than the second via hole 261. The second via hole 261 and the plurality of third via holes 262 form a structure in which small holes are nested in large holes. The third via holes 262 can penetrate the interlayer dielectric layer 26, the gate insulating layer 24 and the buffer layer 22, so that the third via holes 262 can penetrate to the base substrate 1. The third via holes 262 can also penetrate the interlayer dielectric layer 26, the gate insulating layer 24 and a part of the buffer layer 22. In this case, the third via holes 262 do not penetrate to the base substrate 1.

[0073] A glass (Frit) adhesive layer 5 is provided on the side of the interlayer dielectric layer 26 facing away from the base substrate 1. A cover plate 6 is provided on the side of the glass adhesive layer 5 facing away from the base substrate 1. The cover plate 6 is bonded to the interlayer dielectric layer 26 via the glass adhesive layer 5, thereby encapsulating the display backplane 10 within the sealed space formed by the cover plate 6, the base substrate 1, and the glass adhesive layer 5. Furthermore, a portion of the glass adhesive layer 5 is located within the second via 261 and the third via 262. The structure of small holes nested within large holes can greatly increase the contact area of ​​the glass adhesive layer 5, thereby improving the packaging capability and achieving good water and oxygen barrier properties and sealing effects.

[0074] However, in a reliability drop ball test of the entire device, there is a risk of cracking in the glass adhesive layer 5, resulting in packaging failure and poor mechanical performance.

[0075] The cracks in the glass adhesive layer 5 are almost always located at the third via 262. The inventors discovered that the main component of the glass adhesive layer 5 is glass powder, which generally has a particle diameter of more than 50nm and an irregular shape. During the laser sintering process, the large particles of glass powder cannot completely melt, and the glass adhesive may not be able to penetrate deeply into the third via 262. This leads to structural weaknesses and abnormal stress points in the glass adhesive layer 5 at the third via 262. In subsequent mechanical performance tests, the glass adhesive layer 5 is damaged by external forces, cracking and causing screen breakage. In addition, the glass adhesive filling legs in the third via 262 are relatively thin and have limited impact resistance. Under the condition of stress accumulation, they are prone to fracture.

[0076] An example embodiment of the present disclosure provides a display panel, as shown in Figures 3 to 19, the display panel has a display area and a non-display area NA, and the non-display area NA is arranged around the display area. The display panel includes a base substrate 1, a display backplane 10, a glass adhesive layer 5 and a cover plate 6; the display backplane 10 is arranged on one side of the base substrate 1, and in the non-display area NA, the display backplane 10 includes a base layer 4, and the base layer 4 is provided with a curved groove 41 and a dot-shaped groove 42, which are arranged around the display area; the glass adhesive layer 5 is bonded to at least one side of the base layer 4 away from the base substrate 1, and a curved protrusion 51 and a dot-shaped protrusion 52 are provided on a side of the glass adhesive layer 5 close to the base substrate 1, the curved protrusion 51 is bonded to the curved groove 41, and the dot-shaped protrusion 52 is bonded to the dot-shaped groove 42; the cover plate 6 is bonded to the side of the glass adhesive layer 5 away from the base substrate 1.

[0077] The display panel disclosed herein, on the one hand, enables a secure connection between the glass adhesive layer 5 and the base layer 4. On the other hand, the curved protrusions 51 can decompose most external forces in any direction into compressive stresses substantially parallel to the curved grooves 41. As a rigid material, the glass adhesive layer 5 has a strong ability to withstand compressive stresses, thereby preventing cracks in the curved protrusions 51. Furthermore, the long length of the curved protrusions 51 can better disperse external forces and reduce the risk of damage to the curved protrusions 51, thereby ensuring the secure connection between the glass adhesive layer 5 and the base layer 4, and thus ensuring the packaging effect. Furthermore, the dot-shaped protrusions 52 cooperate with the dot-shaped grooves 42 to increase the anti-detachment capability of the glass adhesive layer 5, further ensuring the secure connection between the glass adhesive layer 5 and the base layer 4, and thus ensuring the packaging effect.

[0078] 2 and 4 , the display panel may include a display area AA for displaying an image and a non-display area NA for not displaying an image. Display and touch functions may be implemented in the display area AA. The non-display area NA may be arranged to surround the display area AA. The non-display area NA may include a first side area CB1, a second side area CB2, a third side area CB3, and a fourth side area CB4 connected in sequence, wherein the first side area CB1 is disposed opposite the third side area CB3, and the second side area CB2 is disposed opposite the fourth side area CB4. The non-display area NA may further include a binding area BOD, wherein the fourth side area CB4 is disposed adjacent to the binding area BOD. Specifically, the binding area BOD is located on the side of the fourth side area CB4 facing away from the display area AA.

[0079] In this exemplary embodiment, the material of the base substrate 1 may include an inorganic material, such as glass, quartz, or metal. The material of the base substrate 1 may also include an organic material, such as a resin material such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate, and polyethylene naphthalate. The base substrate 1 may be formed of multiple material layers, such as a base substrate 1 may include multiple base material layers, and the base material layers may be made of any of the materials mentioned above. Of course, the base substrate 1 may also be provided as a single layer, and may be made of any of the materials mentioned above.

[0080] As shown in Figure 3, a display backplane 10 is provided on one side of the base substrate 1. The display backplane 10 can be an OLED (Organic Electroluminescence Display) display backplane 10, a QLED (Quantum Dot Light Emitting Diodes) display backplane 10, etc. The display backplane 10 has a light-emitting side and a non-light-emitting side. The light-emitting side and the non-light-emitting side are arranged opposite to each other. The picture can be displayed on the light-emitting side, and the side that displays the picture is the display surface.

[0081] The following description takes the OLED display backplane as an example.

[0082] 5 , the display backplane 10 may include a driving substrate 2 and a light-emitting substrate 3. The driving substrate 2 is disposed on one side of the base substrate 1, and the light-emitting substrate 3 is disposed on a side of the driving substrate 2 facing away from the base substrate 1. The driving substrate 2 may include a plurality of driving circuits arranged in an array, and the light-emitting substrate 3 may include a plurality of light-emitting devices arranged in an array. The driving circuits may drive the light-emitting devices to emit light.

[0083] Specifically, as shown in FIG5 , a light shielding layer 21 can be provided on one side of the base substrate 1. Light incident from the base substrate 1 into the active layer generates photogenerated carriers in the active layer, significantly affecting the characteristics of the thin-film transistor and ultimately the image quality of the display device. The light shielding layer 21 can block light incident from the base substrate 1, thereby preventing it from affecting the characteristics of the thin-film transistor and thus the image quality of the display device. Depending on the type of thin-film transistor, the light shielding layer 21 may be omitted.

[0084] A buffer layer 22 may also be formed on the side of the light-shielding layer 21 facing away from the base substrate 1. The buffer layer 22 serves to block moisture and impurity ions in the base substrate 1 (especially the organic material) and to increase hydrogen ions for the subsequently formed active layer. The buffer layer 22 is made of an insulating material and can insulate and isolate the light-shielding layer 21 from the active layer. The buffer layer 22 may include silicon nitride, silicon oxide, or silicon oxynitride. Depending on the type of base substrate 1 or process conditions, the buffer layer 22 may be omitted.

[0085] An active layer is provided on the side of the buffer layer 22 facing away from the base substrate 1. The active layer may include a channel portion 231 and conductor portions provided at both ends of the channel portion 231. One of the two conductor portions is a source connection portion 232, and the other is a drain connection portion 233. A gate insulating layer 24 is provided on the side of the active layer facing away from the base substrate 1. A gate layer 25 is provided on the side of the gate insulating layer 24 facing away from the base substrate 1. The gate layer 25 may include a gate electrode 251 and a gate line (not shown in the figure).

[0086] An interlayer dielectric layer 26 is provided on the side of the gate layer 25 facing away from the base substrate 1, and a via is provided on the interlayer dielectric layer 26, which is connected to the source connection part 232 and the drain connection part 233; a first connecting conductor layer 27 is provided on the side of the interlayer dielectric layer 26 facing away from the base substrate 1, and the first connecting conductor layer 27 may include a source 271, a drain 272 and a data line (not shown in the figure), and the data line can be connected to the source 271, or it can be a part of the data line as the source 271; the source 271 is connected to the source connection part 232 through the via on the interlayer dielectric layer 26, and the drain 272 is connected to the drain connection part 233 through the via on the interlayer dielectric layer 26.

[0087] In some other exemplary embodiments of the present disclosure, a passivation layer is provided on the side of the first connecting conductor layer 27 facing away from the substrate 1, and a via is also provided in the passivation layer. A second connecting conductor layer is provided on the side of the passivation layer facing away from the substrate 1. The second connecting conductor layer may include a second source electrode and / or a second drain electrode, and the second source electrode and the second drain electrode are connected to the source electrode and the drain electrode respectively through the vias in the passivation layer. Of course, a third connecting conductor layer, a fourth connecting conductor layer, and so on may also be provided as needed.

[0088] 5 , a planarization layer 28 is provided on the side of the first connection conductor layer 27 facing away from the substrate 1 , and a via is provided on the planarization layer 28 , which is connected to the drain 272 . The channel portion 231 , the gate 251 , the source 271 , and the drain 272 form a thin film transistor.

[0089] It should be noted that the thin film transistors described in this specification are top-gate thin film transistors. In other exemplary embodiments of the present disclosure, the thin film transistors may also be bottom-gate or dual-gate thin film transistors, and their specific structures are not described in detail here. Moreover, when using thin film transistors with opposite polarities or when the current direction changes during circuit operation, the functions of "source" and "drain" are sometimes interchangeable. Therefore, in this specification, "source" and "drain" may be interchangeable.

[0090] 5 , a light-emitting substrate 3 is provided on the side of the planarization layer 28 facing away from the base substrate 1 . The light-emitting substrate 3 may include a first electrode 31 , a pixel definition layer 32 , a light-emitting layer group 33 and a second electrode 34 .

[0091] Specifically, a first electrode 31 layer is provided on the side of the planarization layer 28 facing away from the base substrate 1. The first electrode 31 layer may include a first electrode 31 and a first lead. The first electrode 31 is provided in the display area AA, and the first lead is provided in the non-display area NA. The first lead is spaced apart from the first electrode 31. The first electrode 31 is connected to the drain 272 of the driving backplane through a hole. The driving signal is provided to the first electrode 31 through the drain 272. The first electrode 31 may be an anode (pixel electrode).

[0092] A pixel definition layer 32 is provided on the side of the first electrode 31 facing away from the base substrate 1 . An opening is provided on the pixel definition layer 32 , which is connected to the first electrode 31 , so that at least part of the first electrode 31 is not covered by the pixel definition layer 32 .

[0093] A light-emitting layer group 33 is disposed on the side of the pixel definition layer 32 facing away from the substrate 1, with at least a portion of the light-emitting layer group 33 located within the opening. A second electrode 34 is disposed on the side of the light-emitting layer group 33 facing away from the substrate 1. The second electrode 34 can be a cathode (common electrode). The light-emitting layer group 33 within an opening emits light to form a sub-pixel 35, such that the orthographic projection of the sub-pixel 35 on the substrate 1 is the orthographic projection of the light-emitting layer group 33 within the opening on the substrate 1. The display backplane 10 can include multiple sub-pixels 35.

[0094] The light-emitting layer group 33 may include a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer stacked in sequence. The hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in other exemplary embodiments of the present disclosure, the light-emitting layer group 33 may include only the hole transport layer, the light-emitting layer, and the electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure can be set as needed.

[0095] Holes are injected into the organic light-emitting layer from the first electrode 31 side, and electrons are injected into the organic light-emitting layer from the second electrode 34 side. Eventually, the holes and electrons recombine in the organic light-emitting layer to generate excitons. When the generated excitons relax from the excited state to the ground state, the OLED emits visible light.

[0096] The above is a specific structure of the display backplane 10 in the display area AA. Referring to Figure 6, in the non-display area NA, a base layer 4 is provided. The base layer 4 may include a metal base 4a. The metal base 4a may be provided in the same layer and material as the gate layer 25 and at least one of the first connecting conductor layers 27. Specifically, the metal base 4a provided in the first side area CB1, the second side area CB2 and the third side area CB3 may be provided in the same layer and material as the gate layer 25, that is, the metal base 4a provided in the first side area CB1, the second side area CB2 and the third side area CB3 may be formed through the same patterning process as the gate 251, so that the material of the metal base 4a provided in the first side area CB1, the second side area CB2 and the third side area CB3 is the same as the material of the gate 251. For example, the specific material may be molybdenum (Mo), copper (Cu), etc.

[0097] Since the fourth side area CB4 is set between the display area AA and the binding area BOD, more wirings are set in the fourth side area CB4. The wirings may be set in the same layer and material as the first connecting conductor layer 27, and may be set in the same layer and material as the gate 251.

[0098] Therefore, a portion of the metal base 4a set in the fourth side area CB4 can be set in the same layer and material as the first connecting conductor layer 27, that is, a portion of the metal base 4a set in the fourth side area CB4 can be formed by the same composition process as the first connecting conductor layer 27, so that the metal base 4a set in the fourth side area CB4 can be made of the same material as the first connecting conductor layer 27.

[0099] A portion of the metal substrate 4a arranged in the fourth side area CB4 can be arranged in the same layer and material as the gate 251, that is, a portion of the metal substrate 4a arranged in the fourth side area CB4 can be formed by the same composition process as the gate 251, so that the metal substrate 4a arranged in the fourth side area CB4 can be made of the same material as the gate 251.

[0100] This arrangement allows the metal substrate 4a to be formed without adding a mask etching process. Furthermore, the metal substrate 4a is relatively strong, preventing deformation of the metal substrate 4a that would affect the bond strength with the glass adhesive layer 5. Furthermore, the metal substrate 4a has a high light reflectivity, which can improve the curing efficiency of the glass adhesive layer 5.

[0101] The base layer 4 may further include at least one of a buffer layer 22, a gate insulating layer 24 and an interlayer dielectric layer 26, that is, the base layer 4 may include a buffer layer 22, a gate insulating layer 24 or an interlayer dielectric layer 26, the base layer 4 may also include two of the buffer layer 22, the gate insulating layer 24 and the interlayer dielectric layer 26, or the base layer 4 may also include three layers of a buffer layer 22, a gate insulating layer 24 and an interlayer dielectric layer 26.

[0102] Such a configuration allows the depth of the curved grooves 41 and the dot-shaped grooves 42 on the base layer 4 to be set deeper, and the height of the curved protrusions 51 and the dot-shaped protrusions 52 to meet the requirements, thereby preventing the curved protrusions 51 and the dot-shaped protrusions 52 from falling out and ensuring the packaging effect.

[0103] In this example embodiment, referring to Figures 4 and 6 to 19, curved grooves 41 and dot-shaped grooves 42 are provided on the base layer 4, and the curved grooves 41 and the dot-shaped grooves 42 are provided around the display area AA. For example, as shown in Figure 4, the curved groove 41 may be continuous and provided around the display area AA. As shown in Figure 7, the curved groove 41 may be disconnected but provided around the display area AA; the dot-shaped grooves 42 may be disconnected but provided around the display area AA.

[0104] As shown in Figures 8 and 9, a glass adhesive layer 5 is formed between the base layer 4 and the cover plate 6 through a coating and sintering process, such that the glass adhesive layer 5 has an effective portion 5a and an overflow diffusion portion 5b. The overflow diffusion portion 5b is located on opposite sides of the effective portion 5a, and the height of the effective portion 5a is greater than the height of the overflow diffusion portion 5b. The glass adhesive layer 5 is provided at least on the side of the base layer 4 facing away from the base substrate 1. For example, the entire glass adhesive layer 5 may be provided on the side of the base layer 4 facing away from the base substrate 1, or a portion of the glass adhesive layer 5 may be provided on the side of the base layer 4 facing away from the base substrate 1. Moreover, the glass adhesive layer 5 provided on the side of the base layer 4 facing away from the base substrate 1 is the effective portion 5a of the glass adhesive layer 5, rather than the overflow diffusion portion 5b of the glass adhesive layer 5.

[0105] 10 and 11 , a portion of the glass adhesive layer 5 is bonded to the curved groove 41 and the dot-shaped groove 42 , so that a curved protrusion 51 and a dot-shaped protrusion 52 are provided on one side of the glass adhesive layer 5 close to the base substrate 1 . The curved protrusion 51 is bonded to the curved groove 41 , and the dot-shaped protrusion 52 is bonded to the dot-shaped groove 42 , so that the glass adhesive layer 5 and the base layer 4 can be firmly connected.

[0106] Furthermore, as shown in FIG11 , where the dotted arrows indicate forces, when the glass adhesive layer 5 is subjected to external impact, most of the external forces in any direction can be decomposed by the curved protrusions 51 within the curved grooves 41 into compressive stress substantially parallel to the curved grooves 41. As a rigid material, the glass adhesive layer 5 has a strong ability to withstand compressive stress, thereby preventing cracks in the curved protrusions 51. Furthermore, sufficiently long continuous curved protrusions 51 can effectively disperse external forces, reducing the risk of damage to the curved protrusions 51, thereby ensuring a stable connection between the glass adhesive layer 5 and the base layer 4 and, in turn, ensuring the packaging effect.

[0107] In addition, the dot-shaped protrusions 52 are located in the dot-shaped grooves 42 , that is, the dot-shaped protrusions 52 cooperate with the dot-shaped grooves 42 to increase the anti-falling ability of the glass glue layer 5 , further ensuring the stability of the connection between the glass glue layer 5 and the base layer 4 , thereby ensuring the packaging effect.

[0108] 6 and 10 , the cover plate 6 is bonded to the side of the glass adhesive layer 5 facing away from the base substrate 1 , and the cover plate 6 is bonded to the base layer 4 through the glass adhesive layer 5 , thereby encapsulating the display backplane 10 in a sealed space formed by the cover plate 6 , the base substrate 1 and the glass adhesive layer 5 . Moreover, the encapsulation process through the glass adhesive layer 5 is simple and has high transparency, so that the display panel can achieve top emission.

[0109] 3 , in the display area AA, a support structure 7 may be further provided between the cover plate 6 and the display back plate 10 to support the cover plate 6 .

[0110] As shown in Figures 10, 11, and 12, the curved groove 41 surrounds at least a portion of the dot-shaped groove 42, such that the curved protrusion 51 surrounds at least a portion of the dot-shaped protrusion 52. Specifically, the curved groove 41 has a recessed portion, with the dot-shaped groove 42 disposed within the recessed portion, or the curved groove 41 has a surrounding portion, with the dot-shaped groove 42 disposed within the surrounding portion. For example, as shown in Figures 10 and 11, the curved groove 41 may partially surround the dot-shaped groove 42, such that the curved protrusion 51 partially surrounds the dot-shaped protrusion 52. Alternatively, as shown in Figure 12, the curved groove 41 may fully surround the dot-shaped groove 42, such that the curved protrusion 51 fully surrounds the dot-shaped protrusion 52.

[0111] Such a configuration allows the curved protrusion 51 to protect the point-shaped protrusion 52, preventing the impact force from directly acting on the point-shaped protrusion 52 when subjected to external force, causing damage to the point-shaped protrusion 52 and affecting the stability of the connection between the glass glue layer 5 and the base layer 4, thereby affecting the packaging effect.

[0112] Of course, in some other exemplary embodiments of the present disclosure, as shown in FIG. 7 , a portion of the dot-shaped grooves 42 may not be surrounded by the curved grooves 41 , so that a portion of the dot-shaped protrusions 52 may not be surrounded by the curved protrusions 51 .

[0113] As shown in FIG4 , the curved groove 41 and the curved protrusion 51 can be provided as a continuous structure and arranged in at least one circle around the display area AA. That is, the curved groove 41 is not interrupted and is arranged in a ring shape around the display area AA, so that the curved protrusion 51 is also not interrupted and is arranged in a ring shape around the display area AA.

[0114] For example, the curved groove 41 and the curved protrusion 51 can be set as one circle; the curved groove 41 and the curved protrusion 51 can also be set as two or more circles, that is, the curved groove 41 and the curved protrusion 51 can be set as at least two circles.

[0115] As shown in Figure 13, when the curved groove 41 and the curved protrusion 51 can be set as two or more circles, the two or more circles of curved grooves 41 can be set in parallel, so that the two or more circles of curved protrusions 51 can also be set in parallel. In this way, the curved grooves 41 and the curved protrusions 51 occupy a smaller space in the non-display area NA, which is beneficial to the narrow frame of the display panel.

[0116] It should be noted that the above-mentioned parallel setting not only includes a completely parallel setting, but also the curved groove 41 and the curved protrusion 51 are set as a curved structure. Therefore, one curved groove 41 is formed by translating another curved groove 41 along a direction perpendicular to the extension direction of the curved groove 41. These two curved grooves 41 can also be called parallel settings. Similarly, one curved protrusion 51 is formed by translating another curved protrusion 51 along a direction perpendicular to the extension direction of the curved groove 41. These two curved protrusions 51 can also be called parallel settings.

[0117] Of course, in some other example embodiments of the present disclosure, when the curved groove 41 and the curved protrusion 51 can be set as two or more circles, the two or more circles of curved groove 41 can be set non-parallel, so that the two or more circles of curved protrusion 51 can also be set non-parallel.

[0118] Referring to Figures 7 and 14 , the groove spacers 412 and spacers 512 are indicated by dashed lines in Figure 14 . The curved groove 41 may include a plurality of spaced curved sub-grooves 411, i.e., a groove spacer 412 is provided between two adjacent curved sub-grooves 411 in the same circle, and no curved sub-grooves 411 are provided at the groove spacers 412. The plurality of curved sub-grooves 411 are arranged in at least one circle around the display area AA, i.e., the curved groove 41 is disconnected but arranged around the display area AA. The curved protrusion 51 may include a plurality of spaced curved sub-protrusions 511, i.e., a spacer 512 is provided between two adjacent curved sub-protrusions 511 in the same circle, and no curved sub-protrusions 511 are provided at the spacers 512. The plurality of curved sub-protrusions 511 are arranged in at least one circle around the display area AA, i.e., the curved protrusion 51 is disconnected but arranged around the display area AA.

[0119] For example, as shown in FIG7 , the plurality of curved sub-grooves 411 can be arranged in a circle around the display area AA; and the plurality of curved sub-protrusions 511 can be arranged in a circle around the display area AA. The plurality of curved sub-grooves 411 can be arranged in two or more circles around the display area AA, that is, the plurality of curved sub-grooves 411 can be arranged in at least two circles around the display area AA. The plurality of curved sub-protrusions 511 can be arranged in two or more circles around the display area AA, that is, the plurality of curved sub-protrusions 511 can be arranged in at least two circles around the display area AA.

[0120] A groove spacer 412 is provided between two adjacent curved sub-grooves 411 in the same circle, and a spacer 512 is provided between two adjacent curved sub-protrusions 511 in the same circle.

[0121] 15 , the groove spacers 412 and the spacers 512 are indicated by dotted boxes. When a plurality of curved sub-grooves 411 and a plurality of curved sub-protrusions 511 are arranged in at least two circles around the display area AA, the curved sub-grooves 411 of one of the two adjacent circles are arranged opposite to the groove spacers 412 of the other circle, and the curved sub-protrusions 511 of one of the two adjacent circles are arranged opposite to the spacers 512 of the other circle.

[0122] For example, the first circle is close to the display area AA, and the second circle is far away from the display area AA. The curved sub-grooves 411 of the first circle are opposite to the groove spacers 412 of the second circle, so that the curved sub-protrusions 511 of the first circle are opposite to the spacers 512 of the second circle.

[0123] Such a configuration allows each portion of the periphery of the display area AA to be surrounded by curved sub-grooves 411 and curved sub-protrusions 511, further ensuring the stability of the connection between the glass adhesive layer 5 and the base layer 4 and the waterproof oxygen effect of the package; and preventing the impact force from being transmitted to the display area AA of the display back panel 10 through the groove spacer 412, so as to ensure the display effect.

[0124] 12 and 14-17 , the curved groove 41 may include a curved groove unit 413, which may be configured as a circular ring, an elliptical ring, a polygonal ring, an arc, or a broken line structure. The curved protrusion 51 may include a curved protrusion unit 513, which may be configured as a circular ring, an elliptical ring, a polygonal ring, an arc, or a broken line structure.

[0125] The polygonal ring may be a diamond ring, a pentagonal ring, etc.; the arc may be a semicircular arc, a semi-elliptical arc, a parabolic arc, etc.; the broken line structure may be a triangular broken line structure, a trapezoidal broken line structure, etc.

[0126] Moreover, since the curved protrusion 51 is arranged in the curved groove 41, the shape of the curved protrusion unit 513 is compatible with the shape of the curved groove unit 413. For example, if the curved groove unit 413 is set as a circular ring, the curved protrusion unit 513 is also set as a circular ring; if the curved groove unit 413 is set as an arc, the curved protrusion unit 513 is also set as an arc.

[0127] The number of curved groove units 413 that the curved groove 41 can include can be set as needed, and the number of curved protrusion units 513 that the curved protrusion 51 can include can also be set as needed; however, the number of curved groove units 413 that the curved groove 41 can include is the same as the number of curved protrusion units 513 that the curved protrusion 51 can include.

[0128] For example, the curved groove 41 may include a curved groove unit 413, and the curved protrusion 51 may include a curved protrusion unit 513. The curved groove 41 may also include at least two curved groove units 413 sequentially connected to each other, that is, the curved groove 41 may also include two or more curved groove units 413 sequentially connected to each other; the curved protrusion 51 may also include at least two curved protrusion units 513 sequentially connected to each other, that is, the curved protrusion 51 may also include two or more curved protrusion units 513 sequentially connected to each other.

[0129] 16 , when the curved groove 41 includes at least two curved groove units 413 sequentially connected to each other, the two adjacent curved groove units 413 can be arranged axially symmetrically, with the axis of symmetry being the first dividing line L1 of the two adjacent curved grooves 41. Similarly, when the curved protrusion 51 includes at least two curved protrusion units 513 sequentially connected to each other, the two adjacent curved protrusion units 513 can be arranged axially symmetrically, with the axis of symmetry being the second dividing line L2 of the two adjacent curved protrusion units 513.

[0130] 16 , two adjacent curved groove units 413 may also be centrally symmetrically arranged, with the center of symmetry being the midpoint A of the first cutting line L1, which is the dividing line between the two adjacent curved grooves 41. Two adjacent curved protruding units 513 may also be centrally symmetrically arranged, with the center of symmetry being the midpoint A of the second cutting line L2, which is the dividing line between the two adjacent curved protruding units 513.

[0131] It should be noted that, generally, the first cutting line L1 and the second cutting line L2 coincide with each other. Therefore, the axis of symmetry of two adjacent curved groove units 413 coincides with the axis of symmetry of two adjacent curved protruding units 513, and the center of symmetry of two adjacent curved groove units 413 coincides with the center of symmetry of two adjacent curved protruding units 513.

[0132] 12 , 13 and 17 , the groove width K1 of the curved groove 41 is greater than or equal to 5 microns and less than or equal to 50 microns. For example, the groove width K1 of the curved groove 41 can be 8 microns, 10 microns, 12 microns, 15 microns, 17 microns, 20 microns, 23 microns, 25 microns, 28 microns, 30 microns, 32 microns, 35 microns, 37 microns, 40 microns, 43 microns, 45 microns, 48 ​​microns, and the like.

[0133] The wall thickness K2 of the curved protrusion 51 is greater than or equal to 5 microns and less than or equal to 50 microns. For example, the wall thickness K2 of the curved protrusion 51 can be 8 microns, 10 microns, 12 microns, 15 microns, 17 microns, 20 microns, 23 microns, 25 microns, 28 microns, 30 microns, 32 microns, 35 microns, 37 microns, 40 microns, 43 microns, 45 microns, 48 ​​microns, etc.

[0134] If the groove width K1 of the curved groove 41 is too small, it will be difficult for the glass glue to flow to all parts of the curved groove 41, especially at the corners of the curved groove 41, which will easily form cavities or gaps, even if the curved protrusion 51 is formed, it will form a missing part. In addition, the wall thickness K2 of the formed curved protrusion 51 is too small, resulting in reduced strength of the curved protrusion 51. After being subjected to impact force, the curved protrusion 51 is prone to cracks and other defects, affecting the packaging effect.

[0135] If the groove width K1 of the curved groove 41 is too large and the wall thickness K2 of the curved protrusion 51 is also too large, the sintering effect during the laser sintering sealing process is poor and effective packaging cannot be performed.

[0136] The above numerical range not only ensures that the curved protrusion 51 does not form a missing part, but also has an appropriate wall thickness to ensure that the strength of the curved protrusion 51 can withstand impact without cracks and other defects; it also ensures a good sintering effect during the laser sintering sealing process, thereby ensuring the packaging effect.

[0137] Generally, the groove width K1 of the curved groove 41 is the same as the wall thickness K2 of the curved protrusion 51 .

[0138] As shown in Figures 4 and 7 , the multiple dot-shaped grooves 42 on the same side of the display area AA are arranged in at least one straight line, and the multiple dot-shaped protrusions 52 on the same side of the display area AA are arranged in at least one straight line. For example, the multiple dot-shaped grooves 42 on the same side of the display area AA can be arranged in one, two, or multiple straight lines, and the multiple dot-shaped protrusions 52 on the same side of the display area AA can be arranged in one, two, or multiple straight lines. This arrangement ensures that the dot-shaped protrusions 52 cooperate with the dot-shaped grooves 42, thereby increasing the anti-detachment capability of the glass adhesive layer 5, further ensuring the stability of the connection between the glass adhesive layer 5 and the base layer 4, and thus ensuring the packaging effect.

[0139] The distance between two adjacent dot-shaped grooves on the same line is the same, ensuring that the dot-shaped grooves are evenly distributed around the display area AA. The distance between two adjacent dot-shaped protrusions on the same line is the same, ensuring that the dot-shaped protrusions are evenly distributed around the display area AA. This ensures that the anti-slip performance of the glass adhesive layer 5 is basically consistent around the display area AA, preventing the glass adhesive layer 5 from easily falling off in individual areas.

[0140] 12 , 18 and 19 , in the first direction X, the maximum size K3 of the dot-shaped groove 42 is greater than or equal to 10 microns and less than or equal to 80 microns. For example, the maximum size K3 of the dot-shaped groove 42 may be 12 microns, 15 microns, 17 microns, 20 microns, 23 microns, 25 microns, 28 microns, 30 microns, 32 microns, 35 microns, 37 microns, 40 microns, 43 microns, 45 microns, 48 ​​microns, 50 microns, 52 microns, 55 microns, 57 microns, 60 microns, 63 microns, 65 microns, 68 microns, 70 microns, 72 microns, 75 microns, 77 microns, and the like.

[0141] The maximum size K4 of the dot-shaped protrusion 52 is greater than or equal to 10 microns and less than or equal to 80 microns. For example, the maximum size K4 of the dot-shaped protrusion 52 can be 12 microns, 15 microns, 17 microns, 20 microns, 23 microns, 25 microns, 28 microns, 30 microns, 32 microns, 35 microns, 37 microns, 40 microns, 43 microns, 45 microns, 48 ​​microns, 50 microns, 52 microns, 55 microns, 57 microns, 60 microns, 63 microns, 65 microns, 68 microns, 70 microns, 72 microns, 75 microns, 77 microns, etc.

[0142] The first direction X is parallel to the side of the base substrate 1 where the display backplane 10 is provided. That is, the first direction X is a plurality of directions parallel to the side of the base substrate 1 where the display backplane 10 is provided. Only one of the directions is shown in the figure for illustration.

[0143] If the maximum dimension K3 of the dot-shaped groove 42 is too small, it will be difficult for the glass glue to flow to all parts of the dot-shaped groove 42 , especially at the corners of the dot-shaped groove 42 , where cavities or gaps are easily formed, even if the dot-shaped protrusion 52 is formed with a missing portion. Moreover, if the maximum dimension K4 of the formed dot-shaped protrusion 52 is too small, the strength of the dot-shaped protrusion 52 is reduced. After being subjected to impact force, the dot-shaped protrusion 52 is prone to cracks and other defects, which affects the packaging effect.

[0144] If the maximum size K3 of the dot-shaped groove 42 is too large and the maximum size K4 of the dot-shaped protrusion 52 is also too large, the sintering effect during the laser sintering sealing process is poor and effective packaging cannot be performed.

[0145] The above numerical range not only ensures that the point-shaped protrusions 52 will not form missing parts, but also has an appropriate maximum size to ensure that the strength of the point-shaped protrusions 52 can withstand impact without cracks and other defects; it also ensures a better sintering effect during the laser sintering sealing process, thereby ensuring the packaging effect.

[0146] Generally, the maximum dimension K3 of the dot-shaped groove 42 is the same as the maximum dimension K4 of the dot-shaped protrusion 52 .

[0147] 12 , 18 and 19 , the cross-section of the point-shaped groove 42 parallel to the base substrate 1 can be set to be circular, polygonal, elliptical, annular, polygonal annular, elliptical annular, etc.; that is, the point-shaped groove 42 can be set to be a cylindrical groove, a polygonal columnar groove, an elliptical columnar groove, an annular columnar groove, a polygonal annular columnar groove, an elliptical annular columnar groove, etc.

[0148] The cross section of the point-shaped protrusion 52 parallel to the base substrate 1 is set to be circular, polygonal, elliptical, annular, polygonal ring, elliptical ring, etc.; that is, the point-shaped protrusion 52 can be set to be a cylinder, polygonal cylinder, elliptical cylinder, circular ring cylinder, polygonal ring cylinder, elliptical ring cylinder, etc.

[0149] Furthermore, the shape of the dot-shaped grooves 42 must match the shape of the dot-shaped protrusions 52. For example, if the cross-section of the dot-shaped grooves 42 parallel to the substrate 1 is circular, the cross-section of the dot-shaped protrusions 52 parallel to the substrate 1 is also circular. If the cross-section of the dot-shaped grooves 42 parallel to the substrate 1 is polygonal, the cross-section of the dot-shaped protrusions 52 parallel to the substrate 1 is also polygonal. The dot-shaped grooves 42 and dot-shaped protrusions 52 can also have other shapes, which will not be described here.

[0150] In addition, the shapes of the plurality of dot-shaped grooves 42 and the shapes of the plurality of dot-shaped protrusions 52 provided on the same display panel may be the same or different.

[0151] It should be noted that, when the cross-section of the point-shaped groove 42 parallel to the substrate 1 is set to a circle, the maximum size K3 of the point-shaped groove 42 refers to the diameter of the circle; when the cross-section of the point-shaped groove 42 parallel to the substrate 1 is set to an ellipse, the maximum size K3 of the point-shaped groove 42 refers to the maximum radial size of the ellipse; when the cross-section of the point-shaped groove 42 parallel to the substrate 1 is set to a circular ring, the maximum size K3 of the point-shaped groove 42 refers to the diameter of the outer circle of the circular ring; when the cross-section of the point-shaped groove 42 parallel to the substrate 1 is set to an elliptical ring, the maximum size K3 of the point-shaped groove 42 refers to the maximum radial size of the outer ellipse of the elliptical ring.

[0152] As shown in Figure 19, when the dot-shaped groove 42 and the dot-shaped protrusion 52 are set to be annular, the ring width K5 of the dot-shaped groove 42 is greater than or equal to 5 microns and less than or equal to 30 microns. For example, the ring width K5 of the dot-shaped groove 42 can be 8 microns, 10 microns, 12 microns, 15 microns, 17 microns, 20 microns, 23 microns, 25 microns, 28 microns, etc.

[0153] The ring width K6 of the dot-shaped protrusion 52 is greater than or equal to 5 microns and less than or equal to 30 microns. For example, the ring width K6 of the dot-shaped protrusion 52 can be 8 microns, 10 microns, 12 microns, 15 microns, 17 microns, 20 microns, 23 microns, 25 microns, 28 microns, etc.

[0154] If the ring width K5 of the dot-shaped groove 42 is too large and the ring width K6 of the dot-shaped protrusion 52 is also too large, the sintering effect during the laser sintering sealing process is poor and effective packaging cannot be performed.

[0155] If the ring width K5 of the dot-shaped groove 42 is too small, it will be difficult for the glass glue to flow to all parts of the dot-shaped groove 42, especially at the corners of the dot-shaped groove 42, where cavities or gaps are easily formed, even if the dot-shaped protrusion 52 is formed with a missing portion. Moreover, the ring width K6 of the formed dot-shaped protrusion 52 is too small, resulting in reduced strength of the dot-shaped protrusion 52. After being subjected to impact force, the dot-shaped protrusion 52 is prone to cracks and other defects, affecting the packaging effect.

[0156] The above numerical range not only ensures that the point-shaped protrusions 52 will not form missing parts, but also has an appropriate ring width to ensure that the strength of the point-shaped protrusions 52 can withstand impact without cracks and other defects; it also ensures a better sintering effect during the laser sintering sealing process, thereby ensuring the packaging effect.

[0157] Generally, the ring width K5 of the dot-shaped groove 42 is the same as the ring width K6 of the dot-shaped protrusion 52 .

[0158] 6 , in the second direction Y, the depth H1 of the curved groove 41 is greater than or equal to 300 nanometers and less than or equal to 700 nanometers. For example, the depth H1 of the curved groove 41 may be 330 nanometers, 350 nanometers, 380 nanometers, 400 nanometers, 420 nanometers, 450 nanometers, 470 nanometers, 500 nanometers, 530 nanometers, 550 nanometers, 580 nanometers, 600 nanometers, 620 nanometers, 650 nanometers, 670 nanometers, and so on.

[0159] The height H2 of the curved protrusion 51 is greater than or equal to 300 nanometers and less than or equal to 700 nanometers. For example, the height H2 of the curved protrusion 51 can be 330 nanometers, 350 nanometers, 380 nanometers, 400 nanometers, 420 nanometers, 450 nanometers, 470 nanometers, 500 nanometers, 530 nanometers, 550 nanometers, 580 nanometers, 600 nanometers, 620 nanometers, 650 nanometers, 670 nanometers, etc.

[0160] If the depth H1 of the curved groove 41 is too large, the bottom of the curved groove 41 will be severely tilted, and the width of the curved groove 41 will be narrow, making it difficult for the glass glue to flow to the bottom of the curved groove 41, and it is easy to form a cavity or gap, that is, the curved protrusion 51 will form a missing part, resulting in reduced strength of the curved protrusion 51. After being subjected to impact force, the curved protrusion 51 is prone to cracks and other defects, affecting the packaging effect.

[0161] If the depth H1 of the curved groove 41 is too small, the height H2 of the formed curved protrusion 51 will be too small, and the adhesive force between the curved protrusion 51 and the curved groove 41 will be too weak, causing the curved protrusion 51 to easily fall out of the curved groove 41, affecting the packaging effect.

[0162] The above numerical range not only ensures that the curved protrusion 51 does not form a missing portion to ensure the strength of the curved protrusion 51, but also ensures the adhesion between the curved protrusion 51 and the curved groove 41 to ensure the packaging effect.

[0163] Generally, the depth H1 of the curved groove 41 is the same as the height H2 of the curved protrusion 51 .

[0164] 6 , the depth H3 of the dot-shaped grooves 42 is greater than or equal to 300 nanometers and less than or equal to 700 nanometers. For example, the depth H3 of the dot-shaped grooves 42 can be 330 nanometers, 350 nanometers, 380 nanometers, 400 nanometers, 420 nanometers, 450 nanometers, 470 nanometers, 500 nanometers, 530 nanometers, 550 nanometers, 580 nanometers, 600 nanometers, 620 nanometers, 650 nanometers, 670 nanometers, and so on.

[0165] The height H4 of the dot-shaped protrusion 52 is greater than or equal to 300 nanometers and less than or equal to 700 nanometers. For example, the height H4 of the dot-shaped protrusion 52 can be 330 nanometers, 350 nanometers, 380 nanometers, 400 nanometers, 420 nanometers, 450 nanometers, 470 nanometers, 500 nanometers, 530 nanometers, 550 nanometers, 580 nanometers, 600 nanometers, 620 nanometers, 650 nanometers, 670 nanometers, etc.

[0166] If the depth H3 of the dot-shaped groove 42 is too large, the bottom of the dot-shaped groove 42 will be severely tilted, and the width of the formed dot-shaped groove 42 will be narrow, making it difficult for the glass glue to flow to the bottom of the dot-shaped groove 42, and easily forming a cavity or gap. Even if the dot-shaped protrusion 52 is formed, a missing part will be formed, resulting in a reduction in the strength of the dot-shaped protrusion 52. After being subjected to impact force, the dot-shaped protrusion 52 will easily crack and other defects, affecting the packaging effect.

[0167] If the depth H3 of the dot-shaped groove 42 is too small, the height H4 of the formed dot-shaped protrusion 52 will be too small, and the adhesion between the dot-shaped protrusion 52 and the dot-shaped groove 42 will be too weak, causing the dot-shaped protrusion 52 to easily fall out of the dot-shaped groove 42, affecting the packaging effect.

[0168] The above numerical range not only ensures that the dot-shaped protrusions 52 do not form missing parts, thereby ensuring the strength of the dot-shaped protrusions 52 ; but also ensures the adhesion between the dot-shaped protrusions 52 and the dot-shaped grooves 42 , thereby ensuring the packaging effect.

[0169] The second direction Y is perpendicular to a surface of the base substrate 1 on which the display back plate 10 is disposed.

[0170] Generally, the depth H3 of the dot-shaped grooves 42 is the same as the height H4 of the dot-shaped protrusions 52 .

[0171] Based on the same inventive concept, an exemplary embodiment of the present disclosure further provides a display device, which may include any one of the display panels described above. The specific structure of the display panel has been described in detail above, so it will not be repeated here.

[0172] The specific type of the display device is not particularly limited, and any type of display device commonly used in the field can be used, such as mobile devices such as mobile phones, wearable devices such as watches, VR devices, etc. Those skilled in the art can make corresponding choices based on the specific purpose of the display device, which will not be repeated here.

[0173] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as the housing, circuit board, power cord, etc. Taking the display as an example, technical personnel in this field can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0174] Compared with the prior art, the beneficial effects of the display device provided by the exemplary embodiment of the present invention are the same as the beneficial effects of the display panel provided by the above exemplary embodiment, and are not described in detail here.

[0175] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel having a display area and a non-display area, wherein the non-display area is arranged around the display area, wherein: The display panel comprises: substrate substrate; A display backplane is arranged on one side of the base substrate. In the non-display area, the display backplane includes a base layer, and the base layer is provided with a curved groove and a dot-shaped groove, and the curved groove and the dot-shaped groove are arranged around the display area; A glass adhesive layer is bonded to at least one side of the base layer away from the base substrate, and a side of the glass adhesive layer close to the base substrate is provided with a curved protrusion and a dot-shaped protrusion, the curved protrusion is bonded to the curved groove, and the dot-shaped protrusion is bonded to the dot-shaped groove; The cover plate is bonded to a side of the glass adhesive layer away from the base substrate.

2. The display panel according to claim 1, wherein: The curved groove surrounds at least a portion of the dot-shaped groove, and the curved protrusion surrounds at least a portion of the dot-shaped protrusion.

3. The display panel according to claim 1, wherein: The curved groove and the curved protrusion are arranged as a continuous structure, and are arranged to surround the display area in at least one circle.

4. The display panel according to claim 3, wherein: The curved grooves and the curved protrusions are arranged in at least two circles around the display area, and at least two circles of the curved grooves are arranged in parallel, and at least two circles of the curved protrusions are arranged in parallel.

5. The display panel according to claim 1, wherein: The curved groove includes a plurality of curved sub-grooves arranged at intervals, and the plurality of curved sub-grooves are arranged at least in one circle around the display area; the curved protrusion includes a plurality of curved sub-protrusions arranged at intervals, and the plurality of curved sub-protrusions are arranged at least in one circle around the display area.

6. The display panel according to claim 5, wherein: A plurality of the curved sub-grooves are arranged in at least two circles around the display area, a groove spacer is arranged between two adjacent curved sub-grooves in the same circle, and the curved sub-grooves of one of the two adjacent circles are arranged opposite to the groove spacers of the other circle; a plurality of the curved sub-protrusions are arranged in at least two circles around the display area, a spacer is arranged between two adjacent curved sub-protrusions in the same circle, and the curved sub-protrusions of one of the two adjacent circles are arranged opposite to the spacers of the other circle.

7. The display panel according to any one of claims 1 to 6, wherein: The curved groove includes a curved groove unit, which is configured as a circular ring, an elliptical ring, a polygonal ring, an arc or a broken line structure; the curved protrusion includes a curved protrusion unit, which is configured as a circular ring, an elliptical ring, a polygonal ring, an arc or a broken line structure.

8. The display panel according to claim 7, wherein: The curved groove includes at least two curved groove units connected to each other in sequence, and two adjacent curved groove units are axially symmetrically arranged or center-symmetrically arranged, the axis of symmetry is the first dividing line of the two adjacent curved groove units, and the center of symmetry is the midpoint of the first dividing line; the curved protrusion includes at least two curved protrusion units connected to each other in sequence, and two adjacent curved protrusion units are axially symmetrically arranged or center-symmetrically arranged, the axis of symmetry is the second dividing line of the two adjacent curved protrusion units, and the center of symmetry is the midpoint of the second dividing line.

9. The display panel according to any one of claims 1 to 6, wherein: The plurality of dot-shaped grooves located on the same side of the display area are arranged in at least one straight line, and the plurality of dot-shaped protrusions located on the same side of the display area are arranged in at least one straight line.

10. The display panel according to claim 9, wherein: The distance between two adjacent dot-shaped grooves located on the same straight line is the same, and the distance between two adjacent dot-shaped protrusions located on the same straight line is the same.

11. The display panel according to any one of claims 1 to 6, wherein: The groove width of the curved groove is greater than or equal to 5 microns and less than or equal to 50 microns, and the wall thickness of the curved protrusion is greater than or equal to 5 microns and less than or equal to 50 microns.

12. The display panel according to any one of claims 1 to 6, wherein: In the first direction, the maximum size of the dot-shaped grooves is greater than or equal to 10 microns and less than or equal to 80 microns, and the maximum size of the dot-shaped protrusions is greater than or equal to 10 microns and less than or equal to 80 microns. The first direction is parallel to a side of the base substrate on which the display backplane is set.

13. The display panel according to claim 12, wherein: When the dot-shaped grooves and the dot-shaped protrusions are arranged in an annular shape, the annular width of the dot-shaped grooves is greater than or equal to 5 micrometers and less than or equal to 30 micrometers, and the annular width of the dot-shaped protrusions is greater than or equal to 5 micrometers and less than or equal to 30 micrometers.

14. The display panel according to any one of claims 1 to 6, wherein: In the second direction, the depth of the curved groove is greater than or equal to 300 nanometers and less than or equal to 700 nanometers, and the height of the curved protrusion is greater than or equal to 300 nanometers and less than or equal to 700 nanometers; the depth of the point-shaped groove is greater than or equal to 300 nanometers and less than or equal to 700 nanometers, and the height of the point-shaped protrusion is greater than or equal to 300 nanometers and less than or equal to 700 nanometers, and the second direction is perpendicular to the side of the base substrate on which the display back panel is set.

15. The display panel according to any one of claims 1 to 6, wherein: The cross-section of the dot-shaped groove parallel to the substrate is set to be circular, polygonal, elliptical, annular, polygonal ring, or elliptical ring; the cross-section of the dot-shaped protrusion parallel to the substrate is set to be cylindrical, polygonal, elliptical, annular, polygonal ring, or elliptical ring.

16. The display panel according to any one of claims 1 to 6, wherein: The display backplane comprises: A buffer layer is provided on one side of the base substrate; An active layer, disposed on a side of the buffer layer away from the substrate; A gate insulating layer, disposed on a side of the active layer away from the substrate; A gate layer, disposed on a side of the gate insulating layer away from the base substrate; An interlayer dielectric layer, disposed on a side of the gate layer away from the substrate; A first connecting conductor layer is provided on a side of the interlayer dielectric layer away from the substrate; The base layer includes a metal base, and the metal base is provided in the same layer and with the same material as at least one of the gate layer and the first connecting conductor layer.

17. The display panel according to claim 16, wherein: The base layer further includes at least one of the buffer layer, the gate insulating layer and the interlayer dielectric layer.

18. A display device, wherein: A display panel comprising any one of claims 1 to 17.

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