Display panel and display device

Abstract

The utility model relates to the technical field of display, and discloses a display panel and a display device. The display panel is provided with a display area and a non-display area, the non-display area is arranged around the display area, and the display panel comprises a substrate, a display backboard, a glass cement layer and a cover plate; the display back plate is arranged on one side of the substrate, in the non-display area, the display back plate comprises a base layer, the base layer is provided with a curved groove and a dotted groove, and the curved groove and the dotted groove are arranged around the display area; the glass cement layer is at least bonded to the side, away from the substrate base plate, of the base layer, curve protruding parts and dotted protruding parts are arranged on the face, close to the substrate base plate, of the glass cement layer, the curve protruding parts are bonded in the curve grooves, and the dotted protruding parts are bonded in the dotted grooves; the cover plate is bonded to the side, away from the substrate, of the glass cement layer. The display panel is good in packaging effect.

Description

Technical Field

[0001] 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

[0002] 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 many advantages such as flexible display and large-area full-color display. They are considered to be the display devices with the most development potential.

[0003] The metal and organic functional layers in the OLED display backplane are extremely sensitive to water vapor and oxygen. If water vapor and oxygen penetrate into the display backplane, the performance of the display backplane will deteriorate and the luminous life will be greatly shortened. Therefore, the OLED display backplane must be encapsulated. However, the current encapsulation effect of OLED display backplane is poor, and it is easy to fail.

[0004] 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 the prior art known to ordinary technicians in the field. Utility Model Content

[0005] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a display panel and a display device including the display panel.

[0006] 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, and the display panel comprises:

[0007] substrate substrate;

[0008] 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;

[0009] 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;

[0010] The cover plate is bonded to a side of the glass adhesive layer away from the base substrate.

[0011] 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.

[0012] In an exemplary embodiment of the present disclosure, 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.

[0013] 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.

[0014] 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.

[0015] 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 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.

[0016] 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.

[0017] 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 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.

[0018] In an exemplary embodiment of the present disclosure, a plurality of the dot-shaped grooves located on the same side of the display area are arranged in at least one straight line, and a plurality of the dot-shaped protrusions located on the same side of the display area are arranged in at least one straight line.

[0019] 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.

[0020] 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.

[0021] In an exemplary embodiment of the present disclosure, in a 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, and the first direction is parallel to a side of the base substrate on which the display back panel is set.

[0022] 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.

[0023] 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 dot-shaped groove is greater than or equal to 300 nanometers and less than or equal to 700 nanometers, and the height of the dot-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 a surface of the base substrate on which the display back panel is set.

[0024] 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.

[0025] In an exemplary embodiment of the present disclosure, the display backplane includes:

[0026] A buffer layer is provided on one side of the base substrate;

[0027] An active layer, disposed on a side of the buffer layer away from the substrate;

[0028] A gate insulating layer, disposed on a side of the active layer away from the substrate;

[0029] A gate layer, disposed on a side of the gate insulating layer away from the base substrate;

[0030] An interlayer dielectric layer, disposed on a side of the gate layer away from the substrate;

[0031] A first connecting conductor layer is provided on a side of the interlayer dielectric layer away from the substrate;

[0032] 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.

[0033] In an exemplary embodiment of the present disclosure, the base layer further includes at least one layer of the buffer layer, the gate insulating layer and the interlayer dielectric layer.

[0034] According to another aspect of the present disclosure, a display device is provided, comprising any one of the display panels described above.

[0035] The display panel disclosed in the present invention is provided with curved grooves and dot-shaped grooves on the base layer, and a curved protrusion and a dot-shaped protrusion are provided on one side of the glass glue layer close to the base layer. The curved protrusion is bonded into the curved groove, and the dot-shaped protrusion is bonded into the dot-shaped groove. On the one hand, the glass glue layer and the base layer can be firmly connected; on the other hand, the curved protrusion can decompose most of the external forces in any direction into compressive stresses that are basically parallel to the curved grooves, and the glass glue layer, as a rigid material, has a strong ability to withstand compressive stress, thereby avoiding cracks in the curved protrusions. Moreover, the length of the curved protrusions is relatively long, which can better disperse the external forces and reduce the risk of damage to the curved protrusions, thereby ensuring the stability of the connection between the glass glue layer and the base layer, and further ensuring the packaging effect. On the other hand, the cooperation between the dot-shaped protrusions and the dot-shaped grooves increases the anti-falling ability of the glass glue layer, further ensuring the stability of the connection between the glass glue layer and the base layer, and further ensuring the packaging effect.

[0036] 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 present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings herein are incorporated into the specification 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 accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0038] Figure 1 It is a schematic diagram of the packaging structure of the glass glue layer, the base substrate and the cover plate in the related technology.

[0039] Figure 2 for Figure 1 A schematic top view of the process after the second via hole and the third via hole are formed.

[0040] Figure 3 It is a cross-sectional schematic diagram of an exemplary embodiment of a display panel according to the present disclosure and related technologies.

[0041] Figure 4 FIG. 1 is a schematic top view of an exemplary embodiment of a display panel of the present disclosure.

[0042] Figure 5 for Figure 3 The schematic diagram of the structure of the backplane in the display area is shown in FIG.

[0043] Figure 6 for Figure 3 FIG. 3 is a schematic diagram showing the structure of the backplane in the non-display area.

[0044] Figure 7 FIG. 4 is a schematic top view of another exemplary embodiment of a display panel according to the present disclosure.

[0045] Figure 8 for Figure 6 Schematic diagram of the structure of the middle glass glue layer.

[0046] Fig. 9 for Figure 8 Schematic cross-sectional view of the middle glass adhesive layer.

[0047] Fig.10 for Figure 4 Schematic diagram of the local structure of the non-display area of ​​the display panel.

[0048] Fig.11 for Fig.10 Schematic diagram of the force analysis of the protruding part of the middle curve.

[0049] Fig.12 It is a schematic structural diagram of a second exemplary embodiment of a curved groove, a dot-shaped groove, a curved protrusion and a dot-shaped protrusion in a display panel of the present disclosure.

[0050] Fig.13 It is a schematic structural diagram of a third exemplary embodiment of a curved groove, a dot-shaped groove, a curved protrusion and a dot-shaped protrusion in a display panel of the present disclosure.

[0051] Fig.14 It is a structural schematic diagram of a fourth exemplary embodiment of the curved groove, the dot-shaped groove, the curved protrusion and the dot-shaped protrusion in the display panel of the present disclosure.

[0052] Fig.15 It is a structural schematic diagram of a fifth exemplary embodiment of the curved grooves, dot-shaped grooves, curved protrusions and dot-shaped protrusions in the display panel of the present disclosure.

[0053] Fig.16 It is a structural schematic diagram of a sixth exemplary embodiment of the curved grooves, dot-shaped grooves, curved protrusions and dot-shaped protrusions in the display panel of the present disclosure.

[0054] Fig.17 It is a structural schematic diagram of a seventh exemplary embodiment of the curved grooves, dot-shaped grooves, curved protrusions and dot-shaped protrusions in the display panel of the present disclosure.

[0055] Fig.18 It is a schematic structural diagram of an eighth exemplary embodiment of the curved grooves, dot-shaped grooves, curved protrusions and dot-shaped protrusions in the display panel of the present disclosure.

[0056] Fig.19 It is a schematic structural diagram of a ninth exemplary embodiment of the curved grooves, dot-shaped grooves, curved protrusions and dot-shaped protrusions in the display panel of the present disclosure.

[0057] Description of reference numerals:

[0058] 1. Base substrate; 10. Display backplane;

[0059] 2. driving substrate; 21. light shielding layer; 22. buffer layer; 231. channel portion; 232. source connection portion; 233. drain connection portion; 24. gate insulating layer; 25. gate layer; 251. gate; 26. interlayer dielectric layer; 261. second via hole; 262. third via hole; 27. first connection conductor layer; 271. source; 272. drain; 28. planarization layer;

[0060] 3. Light-emitting substrate; 31. First electrode; 32. Pixel definition layer; 33. Light-emitting layer group; 34. Second electrode; 35. Sub-pixel;

[0061] 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;

[0062] 5, glass glue layer; 5a, effective part; 5b, overflow diffusion part; 51, curved protrusion; 511, curved sub-protrusion; 512, spacing part; 513, curved protrusion unit; 52, dot-shaped protrusion;

[0063] 6. Cover plate; 7. Support structure;

[0064] 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;

[0065] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0067] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0068] 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 an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0069] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. "And / or" is just a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0070] Reference Figure 1-Figure 3As shown, in the related art, a display backplane 10 is arranged on one side of a base substrate 1, and in a non-display area NA, the display backplane 10 includes a buffer layer 22 and a gate insulating layer 24 which are stacked in sequence, a metal base 4a is arranged on the side of the gate insulating layer 24 away from the base substrate 1, and a first via hole 4a1 is arranged on the metal base 4a; an interlayer dielectric layer 26 is arranged on the side of the metal base 4a away from the base substrate 1, and a part of the interlayer dielectric layer 26 is located in the first via hole 4a1 of the metal base 4a, and a second via hole 261 is arranged 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 penetrate the entire interlayer dielectric layer 26, or may only penetrate a part 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 holes 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 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 substrate 1.

[0071] A glass (Frit) adhesive layer 5 is disposed on the side of the interlayer dielectric layer 26 facing away from the base substrate 1, and a cover plate 6 is disposed 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 through the glass adhesive layer 5, so that the display backplane 10 is encapsulated in the sealed space formed by the cover plate 6, the base substrate 1 and the glass adhesive layer 5. Moreover, a part of the glass adhesive layer 5 is located in the second via hole 261 and the third via hole 262. The structure of small holes nested in large holes can greatly increase the contact area of ​​the glass adhesive layer 5, thereby improving the encapsulation capability and achieving good water and oxygen barrier properties and sealing effects.

[0072] However, in a reliability drop ball test of the entire device, there is a risk of cracks in the glass glue layer 5, resulting in packaging failure and poor mechanical properties.

[0073] The locations where cracks occur in the glass glue layer 5 are almost all at the locations of the third via hole 262. The inventors found that the main component of the glass glue layer 5 is glass powder, and generally the diameter of the glass powder particles is above 50nm, and the glass powder particles are irregular in shape. During the laser sintering process, the large-particle glass powder cannot be completely molten, and the glass glue may not be able to penetrate deep into the third via hole 262, resulting in the formation of structural weakness and stress abnormal points in the glass glue layer 5 at the third via hole 262. In the subsequent mechanical performance test, it is damaged by external force, cracks are generated, and the screen is broken; in addition, the glass glue filling legs in the third via hole 262 are thin, and the impact resistance is limited. Under the condition of stress accumulation, it is easy to break.

[0074] The exemplary embodiment of the present disclosure provides a display panel, referring to Figure 3-Figure 19 As shown, 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 glue 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, and the curved groove 41 and the dot-shaped groove 42 are arranged around the display area; the glass glue layer 5 is at least bonded to the 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 glue layer 5 close to the base substrate 1, the curved protrusion 51 is bonded in the curved groove 41, and the dot-shaped protrusion 52 is bonded in the dot-shaped groove 42; the cover plate 6 is bonded to the side of the glass glue layer 5 away from the base substrate 1.

[0075] The display panel disclosed in the present invention, on the one hand, enables the glass glue layer 5 to be firmly connected to the base layer 4; on the other hand, the curved protrusion 51 can decompose most of the external force in any direction into compressive stress basically parallel to the curved groove 41, and the glass glue layer 5, as a rigid material, has a strong ability to withstand compressive stress, thereby avoiding cracks in the curved protrusion 51. Moreover, the curved protrusion 51 is relatively long, which can better disperse the external force and reduce the risk of damage to the curved protrusion 51, thereby ensuring the stability of the connection between the glass glue layer 5 and the base layer 4, and further ensuring the packaging effect. On the other hand, the cooperation between the dot-shaped protrusion 52 and the dot-shaped groove 42 increases 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, and further ensuring the packaging effect.

[0076] Reference Figure 2 and Figure 4As shown, the display panel may include a display area AA for displaying an image and a non-display area NA for not displaying an image, and 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, the first side area CB1 being arranged opposite to the third side area CB3, and the second side area CB2 being arranged opposite to the fourth side area CB4. The non-display area NA may also include a binding area BOD, and the fourth side area CB4 is arranged close to the binding area BOD. Specifically, the binding area BOD is located on the side of the fourth side area CB4 away from the display area AA.

[0077] In this example embodiment, the material of the base substrate 1 may include an inorganic material, for example, the inorganic material may be glass, quartz or metal. The material of the base substrate 1 may also include an organic material, for example, the organic material may be a resin material such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate and polyethylene naphthalate. The base substrate 1 may be formed by a plurality of material layers, for example, the base substrate 1 may include a plurality of substrate layers, and the material of the substrate layer may be any of the above materials. Of course, the base substrate 1 may also be set as a single layer, which may be any of the above materials.

[0078] Reference Figure 3 As shown, a display backplane 10 is arranged on one side of the base substrate 1, and 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, and a picture can be displayed on the light emitting side, and the side that displays the picture is the display surface.

[0079] The following description will be made by taking an OLED display backplane as an example.

[0080] Reference Figure 5 As shown, the display backplane 10 may include a driving substrate 2 and a light-emitting substrate 3, wherein the driving substrate 2 is disposed on one side of the base substrate 1, and the light-emitting substrate 3 is disposed on the side of the driving substrate 2 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, and the driving circuit may drive the light-emitting devices to emit light.

[0081] Specifically, refer to Figure 5As shown, a light shielding layer 21 may be provided on one side of the base substrate 1. Light incident from the base substrate 1 into the active layer will generate photogenerated carriers in the active layer, which will have a great impact on the characteristics of the thin film transistor, and ultimately affect the display quality of the display device; the light shielding layer 21 can block the light incident from the base substrate 1, thereby avoiding affecting the characteristics of the thin film transistor and avoiding affecting the display quality of the display device. Depending on the type of thin film transistor, the light shielding layer 21 may be omitted.

[0082] A buffer layer 22 may also be formed on the side of the light shielding layer 21 away from the base substrate 1. The buffer layer 22 serves to block water vapor and impurity ions in the base substrate 1 (especially organic materials), and serves to add hydrogen ions to the active layer formed subsequently. The buffer layer 22 is made of insulating material, which 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 the base substrate 1 or process conditions, the buffer layer 22 may be omitted.

[0083] An active layer is disposed 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 disposed 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 disposed on the side of the active layer facing away from the base substrate 1. A gate layer 25 is disposed on the side of the gate insulating layer 24 facing away from the base substrate 1. The gate layer 25 may include a gate 251 and a gate line (not shown in the figure).

[0084] An interlayer dielectric layer 26 is arranged on the side of the gate layer 25 facing away from the base substrate 1, and a via is arranged on the interlayer dielectric layer 26, and the via is connected to the source connection part 232 and the drain connection part 233; a first connecting conductor layer 27 is arranged 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 may be connected to the source 271, or a part of the data line may serve 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.

[0085] In some other exemplary embodiments of the present disclosure, a passivation layer is provided on the side of the first connection conductor layer 27 facing away from the substrate 1, and a via is also provided on the passivation layer; a second connection conductor layer is provided on the side of the passivation layer facing away from the substrate 1, and the second connection conductor layer may include a second source and / or a second drain, and the second source and the second drain are connected to the source and the drain respectively through the vias on the passivation layer. Of course, a third connection conductor layer, a fourth connection conductor layer, etc. may also be provided as needed.

[0086] Please continue to refer to Figure 5 As shown, 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, and the via 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.

[0087] It should be noted that the thin film transistor described in this specification is a top-gate thin film transistor. In other exemplary embodiments of the present disclosure, the thin film transistor may also be a bottom-gate or dual-gate type, and its specific structure will not be described in detail here. Moreover, in the case of using thin film transistors with opposite polarities or when the current direction changes during circuit operation, the functions of the "source" and "drain" are sometimes interchanged. Therefore, in this specification, the "source" and "drain" can be interchanged.

[0088] Please continue to refer to Figure 5 As shown, a light-emitting substrate 3 is disposed 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 .

[0089] Specifically, a first electrode 31 layer is arranged 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 arranged in the display area AA, and the first lead is arranged 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. A driving signal is provided to the first electrode 31 through the drain 272. The first electrode 31 may be an anode (pixel electrode).

[0090] A pixel definition layer 32 is disposed on the side of the first electrode 31 facing away from the base substrate 1 . An opening is disposed on the pixel definition layer 32 . The opening 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 .

[0091] A light-emitting layer group 33 is disposed on the side of the pixel definition layer 32 facing away from the base substrate 1, and at least part of the light-emitting layer group 33 is located in the opening. A second electrode 34 is disposed on the side of the light-emitting layer group 33 facing away from the base substrate 1, and the second electrode 34 can be a cathode (common electrode). The light-emitting layer group 33 in an opening emits light to form a sub-pixel 35, so that the positive projection of the sub-pixel 35 on the base substrate 1 is the positive projection of the light-emitting layer group 33 in the opening on the base substrate 1, and the display backplane 10 can include multiple sub-pixels 35.

[0092] 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 a hole transport layer, a light-emitting layer and an electron transport layer, and the light-emitting layer group 33 may also be other structures, and its specific structure may be set as needed.

[0093] 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. Finally, 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.

[0094] The above is the specific structure of the display backplane 10 in the display area AA. Figure 6 As shown, in the non-display area NA, a base layer 4 is provided, and the base layer 4 may include a metal base 4a, and 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 layer 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.

[0095] Since the fourth side area CB4 is disposed between the display area AA and the binding area BOD, more wirings are disposed in the fourth side area CB4 . The wirings may be disposed in the same layer and material as the first connection conductor layer 27 , and may be disposed in the same layer and material as the gate 251 .

[0096] Therefore, a portion of the metal substrate 4a disposed in the fourth side area CB4 can be disposed in the same layer and with the same material as the first connecting conductor layer 27, that is, a portion of the metal substrate 4a disposed in the fourth side area CB4 can be formed through the same composition process as the first connecting conductor layer 27, so that the metal substrate 4a disposed in the fourth side area CB4 can be made of the same material as the first connecting conductor layer 27.

[0097] A portion of the metal substrate 4a disposed in the fourth side area CB4 can be disposed in the same layer and material as the gate 251, that is, a portion of the metal substrate 4a disposed in the fourth side area CB4 can be formed through the same composition process as the gate 251, so that the metal substrate 4a disposed in the fourth side area CB4 can be made of the same material as the gate 251.

[0098] In this way, the metal substrate 4a can be formed without adding a mask etching process, and the metal substrate 4a has a greater strength, which prevents the metal substrate 4a from being deformed and affecting the firmness of the bonding with the glass glue layer 5. In addition, the metal substrate 4a has a high light reflectivity, which can improve the curing efficiency of the glass glue layer 5.

[0099] The base layer 4 may also 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, and the base layer 4 may also include three layers of the buffer layer 22, the gate insulating layer 24 and the interlayer dielectric layer 26.

[0100] By such arrangement, the depth of the curved groove 41 and the dot-shaped groove 42 on the base layer 4 can be set deeper, and the height of the curved protrusion 51 and the dot-shaped protrusion 52 can meet the requirements, avoiding the curved protrusion 51 and the dot-shaped protrusion 52 from falling out, so as to ensure the packaging effect.

[0101] In this example implementation, refer to Figure 4 , Figure 6-Figure 19 As shown, a curved groove 41 and a dot-shaped groove 42 are provided on the base layer 4, and the curved groove 41 and the dot-shaped groove 42 are provided around the display area AA, for example, referring to Figure 4 As shown, the curved groove 41 may be continuous and arranged around the display area AA, referring to Figure 7 As shown, the curved groove 41 may be disconnected but arranged around the display area AA; the dot-shaped groove 42 may be disconnected but arranged around the display area AA.

[0102] Reference Figure 8 and Fig. 9As shown, the glass glue layer 5 is formed between the base layer 4 and the cover plate 6 by coating and sintering processes, so that the glass glue layer 5 has an effective part 5a and an overflow diffusion part 5b, and the overflow diffusion part 5b is located on opposite sides of the effective part 5a, and the height of the effective part 5a is greater than the height of the overflow diffusion part 5b. The glass glue layer 5 is at least arranged on the side of the base layer 4 away from the base substrate 1; for example, the entire glass glue layer 5 can be arranged on the side of the base layer 4 away from the base substrate 1, or a part of the glass glue layer 5 can be arranged on the side of the base layer 4 away from the base substrate 1, and the glass glue layer 5 arranged on the side of the base layer 4 away from the base substrate 1 is the effective part 5a of the glass glue layer 5, rather than the overflow diffusion part 5b of the glass glue layer 5.

[0103] Reference Fig.10 and Fig.11 As shown, a portion of the glass glue 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 glue 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 glue layer 5 and the base layer 4 can be firmly connected.

[0104] Moreover, refer to Fig.11 As shown in the figure, the dotted arrows indicate the stress. When the glass adhesive layer 5 is impacted by external force, most of the external force in any direction can be decomposed into compressive stress substantially parallel to the curved groove 41 by the curved protrusion 51 in the curved groove 41. As a rigid material, the glass adhesive layer 5 has a strong ability to withstand compressive stress, thereby avoiding cracks in the curved protrusion 51. At the same time, the sufficiently long continuous curved protrusion 51 can also disperse the external force well, reduce the risk of damage to the curved protrusion 51, thereby ensuring the stability of the connection between the glass adhesive layer 5 and the base layer 4, and further ensuring the packaging effect.

[0105] In addition, the dot-shaped protrusions 52 are located in the dot-shaped grooves 42 , that is, the cooperation between the dot-shaped protrusions 52 and the dot-shaped grooves 42 increases 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.

[0106] Reference Figure 6 and Fig.10 As shown, the cover plate 6 is bonded to the side of the glass glue layer 5 facing away from the base substrate 1, and the cover plate 6 is bonded to the base layer 4 through the glass glue layer 5, so that the display back plate 10 is encapsulated in the sealed space formed by the cover plate 6, the base substrate 1 and the glass glue layer 5. In addition, the encapsulation process through the glass glue layer 5 is simple and has high transparency, so that the display panel can achieve top emission.

[0107] Reference Figure 3As shown, 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 .

[0108] Reference Fig.10 and Fig.11 , Fig.12 As shown, the curved groove 41 surrounds at least part of the dot-shaped groove 42, so that the curved protrusion 51 surrounds at least part of the dot-shaped protrusion 52. That is, the curved groove 41 has a concave portion, and the dot-shaped groove 42 is arranged in the concave portion, or the curved groove 41 has a surrounding portion, and the dot-shaped groove 42 is arranged in the surrounding portion. For example, referring to Fig.10 and Fig.11 As shown, the curved groove 41 can half surround the dot-shaped groove 42, so that the curved protrusion 51 can half surround the dot-shaped protrusion 52; Fig.12 As shown, the curved groove 41 may also completely surround the dot-shaped groove 42 , so that the curved protrusion 51 may completely surround the dot-shaped protrusion 52 .

[0109] Such a configuration allows the curved protrusion 51 to protect the dot-shaped protrusion 52, preventing the impact force from directly acting on the dot-shaped protrusion 52 when subjected to external impact, causing damage to the dot-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.

[0110] Of course, in some other exemplary embodiments of the present disclosure, reference Figure 7 As shown, a part of the dot-shaped grooves 42 may not be surrounded by the curved grooves 41 , so that a part of the dot-shaped protrusions 52 may not be surrounded by the curved protrusions 51 .

[0111] Reference Figure 4 As shown, the curved groove 41 and the curved protrusion 51 can be set as a continuous structure, and are set to at least one circle around the display area AA. That is, the curved groove 41 is not broken, and is set to a ring around the display area AA, so that the curved protrusion 51 is also not broken, and is set to a ring around the display area AA.

[0112] 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.

[0113] Reference Fig.13 As shown, in the case where the curved groove 41 and the curved protrusion 51 can be set to two or more circles, the two or more circles of the curved groove 41 can be set in parallel, so that the two or more circles of the curved protrusion 51 can also be set in parallel. In this way, the curved groove 41 and the curved protrusion 51 occupy a smaller space in the non-display area NA, which is beneficial to the narrow frame of the display panel.

[0114] 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 a parallel setting. 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 a parallel setting.

[0115] 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 the curved groove 41 may not be set in parallel, so that the two or more circles of the curved protrusion 51 may also not be set in parallel.

[0116] Reference Figure 7 and Fig.14 As shown, Fig.14 The dotted frame indicates the groove spacer 412 and the spacer 512. The curved groove 41 may include a plurality of curved sub-grooves 411 arranged at intervals, that is, a groove spacer 412 is arranged between two adjacent curved sub-grooves 411 in the same circle, and no curved sub-grooves 411 are arranged at the groove spacer 412; the plurality of curved sub-grooves 411 are arranged at least one circle around the display area AA; that is, the curved groove 41 is disconnected but arranged around the display area AA. The curved protrusion 51 may include a plurality of curved sub-protrusions 511 arranged at intervals, that is, a spacer 512 is arranged between two adjacent curved sub-protrusions 511 in the same circle, and no curved sub-protrusion 511 is arranged at the spacer 512; the plurality of curved sub-protrusions 511 are arranged at least one circle around the display area AA, that is, the curved protrusion 51 is disconnected but arranged around the display area AA.

[0117] For example, refer to Figure 7 As shown, multiple curved sub-grooves 411 may be arranged in one circle around the display area AA; multiple curved sub-protrusions 511 may be arranged in one circle around the display area AA. Multiple curved sub-grooves 411 may be arranged in two or more circles around the display area AA, that is, multiple curved sub-grooves 411 are arranged in at least two circles around the display area AA. Multiple curved sub-protrusions 511 may be arranged in two or more circles around the display area AA, that is, multiple curved sub-protrusions 511 are arranged in at least two circles around the display area AA.

[0118] 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.

[0119] Reference Fig.15 As shown in the figure, the groove spacers 412 and the spacers 512 are represented 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.

[0120] 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 curve sub-groove 411 of the first circle is opposite to the groove spacer 412 of the second circle, so that the curve sub-protrusion 511 of the first circle is opposite to the spacer 512 of the second circle.

[0121] By such arrangement, all the peripheries of the display area AA are surrounded by the curved sub-grooves 411 and the curved sub-protrusions 511, further ensuring the stability of the connection between the glass glue 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 spacers 412, so as to ensure the display effect.

[0122] Reference Fig.12 , Figure 14-17 As shown, the curved groove 41 may include a curved groove unit 413, which is configured as a circular ring, an elliptical ring, a polygonal ring, an arc or a broken line structure. The curved protrusion 51 includes a curved protrusion unit 513, which is configured as a circular ring, an elliptical ring, a polygonal ring, an arc or a broken line structure.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] Reference Fig.16 As shown, in the case where the curved groove 41 includes at least two curved groove units 413 connected to each other in sequence, two adjacent curved groove units 413 can be arranged axially symmetrically, and the axis of symmetry is the first dividing line L1 of the two adjacent curved grooves 41. Similarly, in the case where the curved protrusion 51 includes at least two curved protrusion units 513 connected to each other in sequence, two adjacent curved protrusion units 513 can be arranged axially symmetrically, and the axis of symmetry is the second dividing line L2 of the two adjacent curved protrusion units 513.

[0128] Reference Fig.16 As shown, two adjacent curved groove units 413 can also be centrally symmetrically arranged, with the center of symmetry being the midpoint A of the first dividing line L1, and the first dividing line L1 being the dividing line between the two adjacent curved grooves 41. Two adjacent curved protruding units 513 can also be centrally symmetrically arranged, with the center of symmetry being the midpoint A of the second dividing line L2, and the second dividing line L2 being the dividing line between the two adjacent curved protruding units 513.

[0129] It should be noted that, generally, the first cutting line L1 coincides with the second cutting line L2, 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.

[0130] Reference Fig.12 , Fig.13 as well as Fig.17 As shown, 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, etc.

[0131] 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.

[0132] If the groove width K1 of the curved groove 41 is too small, it will be difficult for the glass glue to flow to various places of the curved groove 41, especially at the corners of the curved groove 41, where cavities or gaps are easily formed, resulting in a missing portion of the curved protrusion 51. 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 impacted, the curved protrusion 51 is prone to cracks and other defects, affecting the packaging effect.

[0133] 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.

[0134] The above numerical range not only ensures that the curved protrusion 51 will 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 force without defects such as cracks; it also ensures that the sintering effect is better during the laser sintering sealing process, thereby ensuring the packaging effect.

[0135] Generally, the groove width K1 of the curved groove 41 is the same as the wall thickness K2 of the curved protrusion 51 .

[0136] Reference Figure 4 as well as Figure 7 As shown, the multiple dot-shaped grooves 42 located on the same side of the display area AA are arranged in at least one straight line, and the multiple dot-shaped protrusions 52 located 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 located on the same side of the display area AA can be arranged in one, two or more straight lines, and the multiple dot-shaped protrusions 52 located on the same side of the display area AA can be arranged in one, two or more straight lines. Such a setting ensures that 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 ensure the stability of the connection between the glass glue layer 5 and the base layer 4, and thus ensure the packaging effect.

[0137] The distance between two adjacent dot-shaped grooves on the same straight line is the same, so that the dot-shaped grooves are evenly distributed around the display area AA; the distance between two adjacent dot-shaped protrusions on the same straight line is the same, so that the dot-shaped protrusions are evenly distributed around the display area AA. It is ensured that the anti-falling ability of the glass glue layer 5 is basically the same at all places around the display area AA, and the glass glue layer 5 is prevented from falling off easily at some parts.

[0138] Reference Fig.12 , Fig.18 as well as Fig.19 As shown, 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 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, and so on.

[0139] 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, and so on.

[0140] The first direction X is parallel to the side of the base substrate 1 where the display backplane 10 is disposed, 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 disposed, and only one is marked in the figure for illustration.

[0141] If the maximum size K3 of the dot-shaped groove 42 is too small, it will be difficult for the glass glue to flow to various places 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 protrusions 52 are formed with missing parts. Moreover, the maximum size K4 of the formed dot-shaped protrusions 52 is too small, resulting in reduced strength of the dot-shaped protrusions 52. After being impacted, the dot-shaped protrusions 52 are prone to cracks and other defects, affecting the packaging effect.

[0142] If the maximum size K3 of the dot-shaped grooves 42 is too large, and the maximum size K4 of the dot-shaped protrusions 52 is also too large, the sintering effect during the laser sintering sealing process is poor, and effective packaging cannot be performed.

[0143] The above numerical range not only ensures that the point-shaped protrusions 52 will not form missing parts, but also has a suitable maximum size to ensure that the strength of the point-shaped protrusions 52 can withstand impact forces without defects such as cracks; it also ensures that the sintering effect is better during the laser sintering sealing process, thereby ensuring the packaging effect.

[0144] Generally, the maximum dimension K3 of the dot-shaped grooves 42 is the same as the maximum dimension K4 of the dot-shaped protrusions 52 .

[0145] Reference Fig.12 , Fig.18 as well as Fig.19 As shown, the cross-section of the dot-shaped groove 42 parallel to the substrate base 1 can be set to be circular, polygonal, elliptical, annular, polygonal annular, elliptical annular, etc.; that is, the dot-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.

[0146] 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.

[0147] Moreover, the shape of the dot-shaped groove 42 should be compatible with the shape of the dot-shaped protrusion 52. For example, when the cross section of the dot-shaped groove 42 parallel to the base substrate 1 is set to be circular, the cross section of the dot-shaped protrusion 52 parallel to the base substrate 1 is also set to be circular; when the cross section of the dot-shaped groove 42 parallel to the base substrate 1 is set to be a polygonal ring, the cross section of the dot-shaped protrusion 52 parallel to the base substrate 1 is also set to be a polygonal ring. The dot-shaped groove 42 and the dot-shaped protrusion 52 can also be other shapes, which will not be described one by one here.

[0148] 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.

[0149] It should be noted that, when the cross-section of the dot-shaped groove 42 parallel to the substrate 1 is set to a circle, the maximum size K3 of the dot-shaped groove 42 refers to the diameter of the circle; when the cross-section of the dot-shaped groove 42 parallel to the substrate 1 is set to an ellipse, the maximum size K3 of the dot-shaped groove 42 refers to the maximum radial size of the ellipse; when the cross-section of the dot-shaped groove 42 parallel to the substrate 1 is set to a circular ring, the maximum size K3 of the dot-shaped groove 42 refers to the diameter of the outer circle of the circular ring; when the cross-section of the dot-shaped groove 42 parallel to the substrate 1 is set to an elliptical ring, the maximum size K3 of the dot-shaped groove 42 refers to the maximum radial size of the outer ellipse of the elliptical ring.

[0150] Reference Fig.19 As shown, when the dot-shaped grooves 42 and the dot-shaped protrusions 52 are arranged in a ring shape, the ring width K5 of the dot-shaped grooves 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 grooves 42 can be 8 microns, 10 microns, 12 microns, 15 microns, 17 microns, 20 microns, 23 microns, 25 microns, 28 microns, etc.

[0151] 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.

[0152] 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.

[0153] 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 various places 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 impacted, the dot-shaped protrusion 52 is prone to cracks and other defects, affecting the packaging effect.

[0154] 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 forces without defects such as cracks; it also ensures that the sintering effect is better during the laser sintering sealing process, thereby ensuring the packaging effect.

[0155] 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 .

[0156] Reference Figure 6As shown, 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 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.

[0157] 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.

[0158] 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 a reduction in the strength of the curved protrusion 51. After being impacted, the curved protrusion 51 is prone to cracks and other defects, affecting the packaging effect.

[0159] If the depth H1 of the curved groove 41 is too small, the height H2 of the formed curved protrusion 51 is too small, and the adhesive force between the curved protrusion 51 and the curved groove 41 is too small, causing the curved protrusion 51 to easily fall out of the curved groove 41, affecting the packaging effect.

[0160] 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 bonding force between the curved protrusion 51 and the curved groove 41 to ensure the packaging effect.

[0161] Generally, the depth H1 of the curved groove 41 is the same as the height H2 of the curved protrusion 51 .

[0162] Please continue to refer to Figure 6 As shown, the depth H3 of the dot-shaped groove 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 groove 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, etc.

[0163] 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.

[0164] If the depth H3 of the dot-shaped groove 42 is too large, the bottom of the dot-shaped groove 42 will be seriously 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 it is easy to form a cavity or gap, that is, the dot-shaped protrusion 52 will form a missing part, resulting in a reduction in the strength of the dot-shaped protrusion 52. After being impacted, the dot-shaped protrusion 52 is prone to cracks and other defects, affecting the packaging effect.

[0165] If the depth H3 of the dot-shaped groove 42 is too small, the height H4 of the formed dot-shaped protrusion 52 is too small, and the adhesive force between the dot-shaped protrusion 52 and the dot-shaped groove 42 is too small, causing the dot-shaped protrusion 52 to easily fall out of the dot-shaped groove 42, affecting the packaging effect.

[0166] The above numerical range not only ensures that the dot-shaped protrusions 52 will not form missing parts to ensure 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 to ensure the packaging effect.

[0167] The second direction Y is perpendicular to a surface of the base substrate 1 on which the display back plate 10 is disposed.

[0168] Generally, the depth H3 of the dot-shaped grooves 42 is the same as the height H4 of the dot-shaped protrusions 52 .

[0169] 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.

[0170] 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. Technical personnel in this field can make corresponding choices based on the specific purpose of the display device, which will not be repeated here.

[0171] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a 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.

[0172] 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, which will not be described in detail herein.

[0173] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A display panel, comprising a display area and a non-display area, wherein the non-display area is arranged around the display area, characterized in that: 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, characterized in that: 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, characterized in that: The curved groove and the curved protrusion are arranged as a continuous structure, and are arranged around the display area in at least one circle.

4. The display panel according to claim 3, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: A display panel comprising any one of claims 1 to 17.

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