Display panel and display device

Abstract

The invention 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 technologies, and more particularly, to a display panel and a display device including the display panel. Background Art

[0002] OLED (Organic Light Emitting Diode) display devices have characteristics such as low power consumption, wide viewing angles, fast response speeds, ultra-thinness, and good shock resistance. They have a wide operating temperature range and can achieve flexible displays and large-area full-color displays, among other advantages, and are considered to be the most promising display devices.

[0003] The metal and organic functional layers in the OLED display backplane are extremely sensitive to moisture and oxygen. If moisture and oxygen penetrate into the interior of the display backplane, the performance of the display backplane will age and deteriorate, and the luminous life will also be greatly shortened. Therefore, the OLED display backplane must be encapsulated. However, the current encapsulation effect of the OLED display backplane is poor, and encapsulation failure is likely to occur.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present disclosure is to overcome the deficiencies of the above prior art and 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, which has a display area and a non-display area. The non-display area is disposed around the display area. The display panel includes:

[0007] A substrate

[0008] A display backplane disposed on one side of the substrate. In the non-display area, the display backplane includes a base layer, and a curved groove and a dot-shaped groove are provided on the base layer. The curved groove and the dot-shaped groove are disposed around the display area.

[0009] A glass glue layer adhesively bonded to at least one side of the base layer facing away from the substrate. A curved protrusion and a dot-shaped protrusion are provided on a surface of the glass glue layer close to the substrate. The curved protrusion is adhesively bonded in the curved groove, and the dot-shaped protrusion is adhesively bonded in the dot-shaped groove.

[0010] A cover plate adhesively bonded to a side of the glass glue layer facing away from the substrate.

[0011] In an exemplary embodiment of the present disclosure, the curved groove surrounds at least a part of the dot-shaped groove, and the curved protrusion surrounds at least a part 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 surround the display area for at least one circle.

[0013] In an exemplary embodiment of the present disclosure, the curved groove and the curved protrusion surround the display area for at least two circles, 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 surround the display area for at least one circle; the curved protrusion includes a plurality of curved sub-protrusions arranged at intervals, and the plurality of curved sub-protrusions surround the display area for at least one circle.

[0015] In an exemplary embodiment of the present disclosure, the plurality of curved sub-grooves surround the display area for at least two circles, and a groove interval part is arranged between two adjacent curved sub-grooves in the same circle, and the curved sub-groove in one circle of the adjacent two circles is arranged opposite to the groove interval part in the other circle; the plurality of curved sub-protrusions surround the display area for at least two circles, and a space part is arranged between two adjacent curved sub-protrusions in the same circle, and the curved sub-protrusion in one circle of the adjacent two circles is arranged opposite to the space part in the other circle.

[0016] In an exemplary embodiment of the present disclosure, the curved groove includes a curved groove unit, and the curved groove unit is arranged 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, and the curved protrusion unit is arranged 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 successively connected curved groove units, and two adjacent curved groove units are arranged axially symmetrically or centrally symmetrically, the axis of symmetry is the first dividing line of 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 successively connected curved protrusion units, and two adjacent curved protrusion units are arranged axially symmetrically or centrally symmetrically, the axis of symmetry is the second dividing line of 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 micrometers and less than or equal to 50 micrometers, and the wall thickness of the curved protrusion is greater than or equal to 5 micrometers and less than or equal to 50 micrometers.

[0021] In an exemplary embodiment of the present disclosure, in a first direction, the maximum dimension of the dot-shaped groove is greater than or equal to 10 micrometers and less than or equal to 80 micrometers, and the maximum dimension of the dot-shaped protrusion is greater than or equal to 10 micrometers and less than or equal to 80 micrometers. The first direction is parallel to the surface of the substrate on which the display backplane is disposed.

[0022] In an exemplary embodiment of the present disclosure, when the dot-shaped groove and the dot-shaped protrusion are arranged in a ring shape, the ring width of the dot-shaped groove is greater than or equal to 5 micrometers and less than or equal to 30 micrometers, and the ring width of the dot-shaped protrusion is greater than or equal to 5 micrometers and less than or equal to 30 micrometers.

[0023] In an exemplary embodiment of the present disclosure, in a 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. The second direction is perpendicular to the surface of the substrate on which the display backplane is disposed.

[0024] In an exemplary embodiment of the present disclosure, the cross-section of the dot-shaped groove parallel to the substrate is circular, polygonal, elliptical, circular ring-shaped, polygonal ring-shaped, or elliptical ring-shaped; the cross-section of the dot-shaped protrusion parallel to the substrate is cylindrical, polygonal, elliptical, circular ring-shaped, polygonal ring-shaped, or elliptical ring-shaped.

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

[0026] A buffer layer disposed on one side of the substrate;

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

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

[0029] A gate electrode layer is disposed on a side of the gate insulating layer facing away from the substrate

[0030] An interlayer dielectric layer is disposed on a side of the gate electrode layer facing away from the substrate

[0031] A first connection conductor layer is disposed on a side of the interlayer dielectric layer facing away from the substrate

[0032] The base layer includes a metal substrate, and the metal substrate is provided with the same layer and the same material as at least one of the gate electrode layer and the first connection conductor layer

[0033] 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

[0034] According to another aspect of the present disclosure, there is provided a display device including the display panel described in any one of the above

[0035] In the display panel of the present disclosure, a curved groove and a dot-shaped groove are provided on the base layer, and a curved protrusion and a dot-shaped protrusion are provided on a surface of the glass glue layer close to the base layer. The curved protrusion is bonded in the curved groove, and the dot-shaped protrusion is bonded in 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 substantially parallel to the curved groove, and the glass glue layer, as a rigid material, has a strong bearing capacity for the compressive stresses, thereby avoiding cracks in the curved protrusion. Moreover, the length of the curved protrusion is relatively long, which can better disperse the external force and reduce the damage risk of the curved protrusion, thereby ensuring the stability of the connection between the glass glue layer and the base layer, and further ensuring the encapsulation effect. On the other hand, the cooperation between the dot-shaped protrusion and the dot-shaped groove increases the anti-detachment 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 encapsulation effect

[0036] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts

[0038] Figure 1 Schematic diagram of the encapsulation structure of the glass glue layer, the substrate, and the cover plate in the related art.

[0039] Figure 2 Is Figure 1 Top view schematic diagram after forming the second via hole and the third via hole in

[0040] Figure 3 Cross-sectional schematic diagram of an exemplary embodiment of the display panel of the present disclosure and related art.

[0041] Figure 4 Top view schematic diagram of an exemplary embodiment of the display panel of the present disclosure.

[0042] Figure 5 Is Figure 3 Schematic diagram of the structure of the display backplane in the display area in

[0043] Figure 6 Is Figure 3 Schematic diagram of the structure of the display backplane in the non-display area in

[0044] Figure 7 Top view schematic diagram of another exemplary embodiment of the display panel of the present disclosure.

[0045] Figure 8 Is Figure 6 Schematic diagram of the structure of the glass glue layer in

[0046] Figure 9 Is Figure 8 Cross-sectional schematic diagram of the glass glue layer in

[0047] Figure 10 Is Figure 4 Partial structure schematic diagram of the non-display area of the display panel in

[0048] Figure 11 Is Figure 10 Schematic diagram of the force analysis of the curved protrusion in

[0049] Figure 12 Schematic diagram of the structure of the second exemplary embodiment of the curved groove, the dot groove, the curved protrusion, and the dot protrusion in the display panel of the present disclosure.

[0050] Figure 13 Schematic diagram of the structure of the third exemplary embodiment of the curved groove, the dot groove, the curved protrusion, and the dot protrusion in the display panel of the present disclosure.

[0051] Figure 14 Schematic diagram of the structure of the fourth exemplary embodiment of the curved groove, the dot groove, the curved protrusion, and the dot protrusion in the display panel of the present disclosure.

[0052] Figure 15 This is a schematic structural diagram of the fifth exemplary embodiment of the curved groove, dot-shaped groove, curved protrusion, and dot-shaped protrusion in the display panel of the present disclosure.

[0053] Figure 16 This is a schematic structural diagram of the sixth exemplary embodiment of the curved groove, dot-shaped groove, curved protrusion, and dot-shaped protrusion in the display panel of the present disclosure.

[0054] Figure 17 This is a schematic structural diagram of the seventh exemplary embodiment of the curved groove, dot-shaped groove, curved protrusion, and dot-shaped protrusion in the display panel of the present disclosure.

[0055] Figure 18 This is a schematic structural diagram of the eighth exemplary embodiment of the curved groove, dot-shaped groove, curved protrusion, and dot-shaped protrusion in the display panel of the present disclosure.

[0056] Figure 19 This is a schematic structural diagram of the ninth exemplary embodiment of the curved groove, dot-shaped groove, curved protrusion, and dot-shaped protrusion in the display panel of the present disclosure.

[0057] Explanation of reference numerals:

[0058] 1. Substrate; 10. Display backplane;

[0059] 2. Driving substrate; 21. Light-shielding layer; 22. Buffer layer; 231. Channel part; 232. Source connection part; 233. Drain connection part; 24. Gate insulating layer; 25. Gate layer; 251. Gate; 26. Interlayer dielectric layer; 261. Second via; 262. Third via; 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 interval part; 413. Curved groove unit; 42. Dot-shaped groove; 4a. Metal substrate; 4a1. First via;

[0062] 5. Glass glue layer; 5a. Effective part; 5b. Overflow diffusion part; 51. Curved protrusion; 511. Curved sub-protrusion; 512. Interval 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, Bonding area;

[0065] X, First direction; Y, Second direction. Detailed implementation

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various 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 concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote 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 an icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0068] The terms "a", "an", "the", "said" and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second" and "third", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0069] In this application, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium. "And / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0070] Refer to Figures 1 - 3As shown, in the related art, a display backplane 10 is disposed on one side of a substrate 1. In a non-display area NA, the display backplane 10 includes a buffer layer 22 and a gate insulating layer 24 that are sequentially stacked. A metal base 4a is disposed on a side of the gate insulating layer 24 facing away from the substrate 1, and a first via 4a1 is disposed on the metal base 4a. An interlayer dielectric layer 26 is disposed on a side of the metal base 4a facing away from the substrate 1, and a part of the interlayer dielectric layer 26 is located within the first via 4a1 of the metal base 4a. A second via 261 is disposed on the interlayer dielectric layer 26 located within the first via 4a1, and the second via 261 is smaller than the first via 4a1. The second via 261 may penetrate through the entire interlayer dielectric layer 26 or only a part of the interlayer dielectric layer 26. A plurality of third vias 262 arranged in an array are disposed at the bottom of the second via 261, and the third vias 262 are smaller than the second via 261. The second via 261 and the plurality of third vias 262 form a structure in which small holes are nested within a large hole. The third vias 262 may penetrate through the interlayer dielectric layer 26, the gate insulating layer 24, and the buffer layer 22, such that the third vias 262 can penetrate through to the substrate 1. The third vias 262 may also penetrate through a part of the interlayer dielectric layer 26, the gate insulating layer 24, and the buffer layer 22. In this case, the third vias 262 do not penetrate through to the substrate 1.

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

[0072] However, in the whole-machine drop ball test of reliability, there is a risk of cracks in the glass glue layer 5, resulting in encapsulation failure and thus poor mechanical properties.

[0073] The positions where cracks occur in the glass glue layer 5 are almost all at the positions of the third vias 262. The inventor found that: the main component of the glass glue layer 5 is glass powder. Generally, the diameter of glass powder particles is above 50 nm, and the shapes of the glass powder particles are irregular. During the laser sintering process, the large-particle glass powder cannot be completely melted, and it may be impossible for the glass glue to penetrate deep into the third vias 262, resulting in structural weakness and stress abnormal points of the glass glue layer 5 at the third vias 262. During subsequent mechanical property tests, it is damaged by external forces, generating cracks and causing screen breakage; in addition, the glass glue filling feet in the third vias 262 are relatively thin, and the impact resistance is limited. Under the condition of stress concentration, it is easy to break.

[0074] The exemplary embodiment of the present disclosure provides a display panel. Referring to Figures 3 - 19 As shown, the display panel has a display area and a non-display area NA. The non-display area NA is arranged around the display area. The display panel includes a 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 substrate 1. In the non-display area NA, the display backplane 10 includes a base layer 4, and a curved groove 41 and a dot-shaped groove 42 are arranged on the base layer 4. 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 facing away from the substrate 1. A curved protrusion 51 and a dot-shaped protrusion 52 are arranged on the surface of the glass glue layer 5 close to the 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 facing away from the substrate 1.

[0075] For the display panel of the present disclosure, on the one hand, the glass glue layer 5 and the base layer 4 can be stably connected; on the other hand, the curved protrusion 51 can decompose most of the external forces in any direction into compressive stresses substantially parallel to the curved groove 41. And the glass glue layer 5, as a rigid material, has a strong ability to withstand compressive stresses, thus avoiding cracks in the curved protrusion 51. Moreover, the length of the curved protrusion 51 is relatively long, which can better disperse the external forces and reduce the damage risk of 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 encapsulation effect. On the other hand, the cooperation between the dot-shaped protrusion 52 and the dot-shaped groove 42 increases the anti-detachment 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 encapsulation effect.

[0076] Referring to Figure 2 and Figure 4As shown, the display panel may include a display area AA for displaying images and a non-display area NA for not displaying images. The display and touch functions can 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 and the third side area CB3 are oppositely arranged, and the second side area CB2 and the fourth side area CB4 are oppositely arranged. The non-display area NA may further include a bonding area BOD. The fourth side area CB4 is arranged close to the bonding area BOD. Specifically, the bonding area BOD is located on the side of the fourth side area CB4 away from the display area AA.

[0077] In the present exemplary embodiment, the material of the substrate 1 may include inorganic materials. For example, the inorganic material may be glass, quartz, metal, etc. The material of the substrate 1 may also include organic materials. For example, the organic material may be resin materials such as polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate, and polyethylene naphthalate. The substrate 1 may be formed by multiple material layers. For example, the substrate 1 may include multiple substrate layers, and the material of the substrate layer may be any of the above materials. Of course, the substrate 1 may also be provided as a single layer, which may be any of the above materials.

[0078] Refer to Figure 3 As shown, a display backplane 10 is provided on one side of the substrate 1. The display backplane 10 may 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, which are oppositely arranged. A picture can be displayed on the light-emitting side, and the side for displaying the picture is the display surface.

[0079] Hereinafter, the OLED display backplane will be taken as an example for illustration.

[0080] Refer to Figure 5 As shown, the display backplane 10 may include a driving substrate 2 and a light-emitting substrate 3. The driving substrate 2 is provided on one side of the substrate 1, and the light-emitting substrate 3 is provided on the side of the driving substrate 2 away from the 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 circuit can drive the light-emitting device to emit light.

[0081] Specifically, refer to Figure 5As shown, a light-shielding layer 21 can be provided on one side of the substrate 1. The light entering the active layer from the substrate 1 will generate photo-generated carriers in the active layer, which will have a huge impact on the characteristics of the thin-film transistor and ultimately affect the display image quality of the display device. By means of the light-shielding layer 21, the light entering from the substrate 1 can be blocked, thereby avoiding affecting the characteristics of the thin-film transistor and the display image quality of the display device. Depending on the type of thin-film transistor, the light-shielding layer 21 can be omitted.

[0082] A buffer layer 22 can also be formed on the side of the light-shielding layer 21 facing away from the substrate 1. The buffer layer 22 serves to block moisture and impurity ions in the substrate 1 (especially organic materials), and also serves to increase hydrogen ions for the subsequently formed active layer. The material of the buffer layer 22 is an insulating material, which can insulate and isolate the light-shielding layer 21 from the active layer. The buffer layer 22 can include silicon nitride, silicon oxide or silicon oxynitride. Depending on the type of the substrate 1 or process conditions, the buffer layer 22 can be omitted.

[0083] An active layer is provided on the side of the buffer layer 22 facing away from the substrate 1. The active layer can 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 substrate 1, and a gate electrode layer 25 is provided on the side of the gate insulating layer 24 facing away from the substrate 1. The gate electrode layer 25 can include a gate electrode 251 and a gate line (not shown in the figure).

[0084] An interlayer dielectric layer 26 is provided on the side of the gate electrode layer 25 facing away from the substrate 1, and vias are provided in the interlayer dielectric layer 26, which communicate with the source connection portion 232 and the drain connection portion 233; a first connection conductor layer 27 is provided on the side of the interlayer dielectric layer 26 facing away from the substrate 1. The first connection conductor layer 27 can include a source electrode 271, a drain electrode 272 and a data line (not shown in the figure). The data line can be connected to the source electrode 271, or a part of the data line can be used as the source electrode 271; the source electrode 271 is connected to the source connection portion 232 through the via in the interlayer dielectric layer 26, and the drain electrode 272 is connected to the drain connection portion 233 through the via in 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 vias are also provided in the passivation layer; a second connection conductor layer is provided on the side of the passivation layer facing away from the substrate 1. The second connection conductor layer can include a second source electrode and / or a second drain electrode. The second source electrode and the second drain electrode are correspondingly connected to the source electrode and the drain electrode through the vias in the passivation layer. Of course, a third connection conductor layer, a fourth connection conductor layer, etc. can also be provided as needed.

[0086] Please continue to refer to Figure 5 As shown, on the side of the first connection conductor layer 27 facing away from the substrate 1, a planarization layer 28 is provided. A via hole is provided on the planarization layer 28, and the via hole 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 type thin film transistor. In other exemplary embodiments of the present disclosure, the thin film transistor may also be a bottom-gate type or a double-gate type, and the specific structure thereof will not be elaborated herein. Moreover, in the case of using a thin film transistor with an opposite polarity or a change in the current direction during the operation of the circuit, etc., the functions of the "source" and "drain" sometimes swap with each other. Therefore, in this specification, the "source" and "drain" can swap with each other.

[0088] Please continue to refer to Figure 5 As shown, on the side of the planarization layer 28 facing away from the substrate 1, a light-emitting substrate 3 is provided. 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, on the side of the planarization layer 28 facing away from the substrate 1, a first electrode 31 layer is provided. 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 and the first electrode 31 are spaced apart. The first electrode 31 is connected to the drain 272 of the driving backplane through a hole, and 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] On the side of the first electrode 31 facing away from the substrate 1, a pixel definition layer 32 is provided. An opening is provided on the pixel definition layer 32, and the opening communicates with the first electrode 31, so that at least a part of the first electrode 31 is not covered by the pixel definition layer 32.

[0091] On the side of the pixel definition layer 32 facing away from the substrate 1, a light-emitting layer group 33 is provided. At least a part of the light-emitting layer group 33 is located in the opening. On the side of the light-emitting layer group 33 facing away from the substrate 1, a second electrode 34 is provided. The second electrode 34 may be a cathode (common electrode). The light-emitting layer group 33 in one opening emits light to form a sub-pixel 35, so that the orthographic projection of the sub-pixel 35 on the substrate 1 is the orthographic projection of the light-emitting layer group 33 in the opening on the substrate 1. The display backplane 10 may include a plurality of 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 that are sequentially stacked. 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 only include a hole transport layer, a light-emitting layer, and an electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure may be set as needed.

[0093] Holes are injected into the organic light-emitting layer from the side of the first electrode 31, and electrons are injected into the organic light-emitting layer from the side of the second electrode 34. Eventually, 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. Refer to Figure 6 As shown, in the non-display area NA, a base layer 4 is provided. The base layer 4 may include a metal base 4a, and the metal base 4a may be provided on the same layer and made of the same material as at least one of the gate layer 25 and the first connection conductor layer 27. Specifically, the metal base 4a provided in the first side region CB1, the second side region CB2, and the third side region CB3 may be provided on the same layer and made of the same material as the gate layer 25, that is, the metal base 4a provided in the first side region CB1, the second side region CB2, and the third side region CB3 may be formed with the gate 251 through the same patterning process, so that the material of the metal base 4a provided in the first side region CB1, the second side region CB2, and the third side region 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 region CB4 is provided between the display area AA and the bonding area BOD, therefore, a relatively large number of traces are provided in the fourth side region CB4. The traces may be provided on the same layer and made of the same material as the first connection conductor layer 27, and may also be provided on the same layer and made of the same material as the gate 251.

[0096] Therefore, a part of the metal base 4a provided in the fourth side region CB4 may be provided on the same layer and made of the same material as the first connection conductor layer 27, that is, a part of the metal base 4a provided in the fourth side region CB4 may be formed with the first connection conductor layer 27 through the same patterning process, so that the metal base 4a provided in the fourth side region CB4 may have the same material as the first connection conductor layer 27.

[0097] A part of the metal substrate 4a disposed in the fourth side region CB4 can be disposed on the same layer and made of the same material as the gate 251, that is, a part of the metal substrate 4a disposed in the fourth side region CB4 can be formed by the same patterning process as the gate 251, so that the metal substrate 4a disposed in the fourth side region CB4 can be made of the same material as the gate 251.

[0098] With such a setting, the metal substrate 4a can be formed without adding a mask etching process, and the metal substrate 4a has a relatively high strength, avoiding deformation of the metal substrate 4a and affecting the bonding firmness 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 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 the buffer layer 22, the gate insulating layer 24, or the 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 further include all three of the buffer layer 22, the gate insulating layer 24, and the interlayer dielectric layer 26.

[0100] With such a setting, the depths of the curved grooves 41 and the dot-shaped grooves 42 on the base layer 4 can be set to be relatively deep, and the heights of the curved protrusions 51 and the dot-shaped protrusions 52 can meet the requirements, avoiding the detachment of the curved protrusions 51 and the dot-shaped protrusions 52 to ensure the encapsulation effect.

[0101] In the present exemplary embodiment, referring to Figure 4 、 Figures 6 - 19 As shown, 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 surround the display area AA. For example, referring to Figure 4 As shown, the curved grooves 41 may be continuous and surround the display area AA. Referring to Figure 7 As shown, the curved grooves 41 may be discontinuous but surround the display area AA; the dot-shaped grooves 42 are discontinuous but surround the display area AA.

[0102] Referring to Figure 8 and Figure 9As shown, the glass glue layer 5 is formed between the base layer 4 and the cover plate 6 through a coating and sintering process, such that the glass glue layer 5 has an effective part 5a and an overflow diffusion part 5b. 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 disposed on the side of the base layer 4 facing away from the substrate 1. For example, all of the glass glue layer 5 can be disposed on the side of the base layer 4 facing away from the substrate 1, or a part of the glass glue layer 5 can be disposed on the side of the base layer 4 facing away from the substrate 1. Moreover, the glass glue layer 5 disposed on the side of the base layer 4 facing away from the 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] Referring to Figure 10 and Figure 11 As shown, a part of the glass glue layer 5 is bonded in the curved groove 41 and the dot-shaped groove 42, such that the side of the glass glue layer 5 close to the substrate 1 is provided with a curved protrusion 51 and a dot-shaped protrusion 52. 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, such that the glass glue layer 5 and the base layer 4 can be stably connected.

[0104] Moreover, referring to Figure 11 As shown, the dotted arrows in the figure represent the applied force. When the glass glue layer 5 is subjected to an external impact, most of the external force in any direction can be decomposed by the curved protrusion 51 in the curved groove 41 into a compressive stress substantially parallel to the curved groove 41. The glass glue layer 5, as a rigid material, has a strong ability to withstand the compressive stress, thereby preventing cracks from appearing in the curved protrusion 51. At the same time, the sufficiently long continuous curved protrusion 51 can also disperse the external force well, reducing 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 encapsulation effect.

[0105] In addition, the dot-shaped protrusion 52 is located in the dot-shaped groove 42, that is, the cooperation between the dot-shaped protrusion 52 and the dot-shaped groove 42 increases the anti-detachment 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 encapsulation effect.

[0106] Referring to Figure 6 and Figure 10 As shown, the cover plate 6 is bonded to the side of the glass glue layer 5 facing away from the substrate 1. The cover plate 6 is bonded to the base layer 4 through the glass glue layer 5, thereby encapsulating the display backplane 10 in the sealed space formed by the cover plate 6, the substrate 1, and the glass glue layer 5. Moreover, the encapsulation process through the glass glue layer 5 is simple and has high transparency, enabling the display panel to achieve top emission.

[0107] Referring to Figure 3As shown, in the display area AA, a support structure 7 can also be provided between the cover plate 6 and the display backplane 10 to support the cover plate 6.

[0108] Referring to Figure 10 and Figure 11 , Figure 12 As shown, the curved groove 41 surrounds at least part of the dot-shaped groove 42, such that the curved protrusion 51 surrounds at least part of the dot-shaped protrusion 52. That is, the curved groove 41 has a recessed portion, and the dot-shaped groove 42 is provided in the recessed portion, or the curved groove 41 has a surrounding portion, and the dot-shaped groove 42 is provided in the surrounding portion. For example, referring to Figure 10 and Figure 11 As shown, the curved groove 41 can semi-surround the dot-shaped groove 42, such that the curved protrusion 51 can semi-surround the dot-shaped protrusion 52; referring to Figure 12 As shown, the curved groove 41 can also fully surround the dot-shaped groove 42, such that the curved protrusion 51 can fully surround the dot-shaped protrusion 52.

[0109] With such a setting, the curved protrusion 51 can protect the dot-shaped protrusion 52, so that when subjected to an external force impact, the impact force does not directly act on the dot-shaped protrusion 52, resulting in 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, and further affecting the encapsulation effect.

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

[0111] Referring to Figure 4 As shown, the curved groove 41 and the curved protrusion 51 can be set as a continuous structure and surround the display area AA for at least one circle. That is, the curved groove 41 is not disconnected and is set as a ring surrounding the display area AA, such that the curved protrusion 51 is also not disconnected and is set as a ring surrounding 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 circles or multiple circles, that is, the curved groove 41 and the curved protrusion 51 can be set as at least two circles.

[0113] Referring to Figure 13 As shown, in the case where the curved groove 41 and the curved protrusion 51 can be set as two circles or multiple circles, the two circles or multiple circles of curved grooves 41 can be arranged in parallel, such that the two circles or multiple circles of curved protrusions 51 can also be arranged in parallel. With such a setting, the curved groove 41 and the curved protrusion 51 occupy less space in the non-display area NA, which is beneficial to the narrow border of the display panel.

[0114] It should be noted that the above parallel arrangement not only includes a completely parallel arrangement, but also the curved groove 41 and the curved protrusion 51 are arranged as curved structures. Therefore, one curved groove 41 is formed by translating another curved groove 41 in a direction perpendicular to the extension direction of the curved groove 41. These two curved grooves 41 can also be referred to as a parallel arrangement. Similarly, one curved protrusion 51 is formed by translating another curved protrusion 51 in a direction perpendicular to the extension direction of the curved groove 41. These two curved protrusions 51 can also be referred to as a parallel arrangement.

[0115] Of course, in some other exemplary embodiments of the present disclosure, when the curved groove 41 and the curved protrusion 51 can be arranged in two or more circles, the two or more circles of curved grooves 41 may not be parallel, so that the two or more circles of curved protrusions 51 may not be parallel either.

[0116] Referring to Figure 7 and Figure 14 as shown, Figure 14 the groove spacer 412 and the spacer 512 are indicated by dashed boxes in. The curved groove 41 may include a plurality of curved sub-grooves 411 arranged at intervals, that is, a groove spacer 412 is provided between two adjacent curved sub-grooves 411 in the same circle, and no curved sub-groove 411 is provided at the groove spacer 412; the plurality of curved sub-grooves 411 are arranged around the display area AA for at least one circle; that is, the curved groove 41 is discontinuous 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 provided between two adjacent curved sub-protrusions 511 in the same circle, and no curved sub-protrusion 511 is provided at the spacer 512; the plurality of curved sub-protrusions 511 are arranged around the display area AA for at least one circle, that is, the curved protrusion 51 is discontinuous but arranged around the display area AA.

[0117] For example, referring to Figure 7 as shown, the plurality of curved sub-grooves 411 may be arranged around the display area AA for one circle; the plurality of curved sub-protrusions 511 may be arranged around the display area AA for one circle. The plurality of curved sub-grooves 411 may be arranged around the display area AA for two or more circles, that is, the plurality of curved sub-grooves 411 are arranged around the display area AA for at least two circles. The plurality of curved sub-protrusions 511 are arranged around the display area AA for two or more circles, that is, the plurality of curved sub-protrusions 511 are arranged around the display area AA for at least two circles.

[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 Figure 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 Figure 12 , Figures 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 successively connected curved groove units 413, that is, the curved groove 41 may also include two or more successively connected curved groove units 413; the curved protrusion 51 may also include at least two successively connected curved protrusion units 513, that is, the curved protrusion 51 may also include two or more successively connected curved protrusion units 513.

[0127] Referring to Figure 16 As shown, when the curved groove 41 includes at least two successively connected curved groove units 413, two adjacent curved groove units 413 may be arranged axially symmetrically, and the axis of symmetry is the first dividing line L1 between two adjacent curved grooves 41. Similarly, when the curved protrusion 51 includes at least two successively connected curved protrusion units 513, two adjacent curved protrusion units 513 may be arranged axially symmetrically, and the axis of symmetry is the second dividing line L2 between two adjacent curved protrusion units 513.

[0128] Referring to Figure 16 As shown, two adjacent curved groove units 413 may also be arranged centrosymmetrically, and the center of symmetry is the midpoint A of the first dividing line L1, and the first dividing line L1 is the dividing line between two adjacent curved grooves 41. Two adjacent curved protrusion units 513 may also be arranged centrosymmetrically, and the center of symmetry is the midpoint A of the second dividing line L2, and the second dividing line L2 is the dividing line between two adjacent curved protrusion units 513.

[0129] It should be noted that generally, the first dividing line L1 coincides with the second dividing line L2. Therefore, the axis of symmetry of two adjacent curved groove units 413 coincides with the axis of symmetry of two adjacent curved protrusion units 513, and the center of symmetry of two adjacent curved groove units 413 also coincides with the center of symmetry of two adjacent curved protrusion units 513.

[0130] Referring to Figure 12 、 Figure 13 and Figure 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 may 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, and so on.

[0132] If the groove width K1 of the curved groove 41 is too small, it is difficult for the glass glue to flow to all parts of the curved groove 41. In particular, voids or gaps are likely to form at the corners of the curved groove 41, which causes a missing part in the formation of the curved protrusion 51. Moreover, the wall thickness K2 of the formed curved protrusion 51 is too small, resulting in a reduction in the strength of the curved protrusion 51. After being impacted, the curved protrusion 51 is prone to defects such as cracks, which affects the encapsulation effect.

[0133] If the groove width K1 of the curved groove 41 is too large, the wall thickness K2 of the curved protrusion 51 is also too large, and the sintering effect is poor during the laser sintering sealing process, making effective encapsulation impossible.

[0134] The above numerical range not only ensures that the curved protrusion 51 does not form a missing part and the wall thickness of the curved protrusion 51 is appropriate to ensure that the strength of the curved protrusion 51 can withstand the impact force without defects such as cracks; but also ensures a good sintering effect during the laser sintering sealing process, thereby ensuring the encapsulation 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] Refer to Figure 4 and Figure 7 As shown, a plurality of dot-shaped grooves 42 on the same side of the display area AA are arranged in at least one straight line, and a plurality of dot-shaped protrusions 52 on the same side of the display area AA are arranged in at least one straight line. For example, a plurality of dot-shaped grooves 42 on the same side of the display area AA can be arranged in one, two, or multiple straight lines, and a plurality of dot-shaped protrusions 52 on the same side of the display area AA can be arranged in one, two, or multiple straight lines. Such an arrangement ensures that the cooperation between the dot-shaped protrusions 52 and the dot-shaped grooves 42 increases the anti-shedding ability of the glass glue layer 5, further ensures the stability of the connection between the glass glue layer 5 and the base layer 4, and thus ensures the encapsulation 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 Figure 12 , Figure 18 as well as Figure 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 dot-shaped protrusions 52 do not form missing parts, and the maximum size of the dot-shaped protrusions 52 is appropriate to ensure that the strength of the dot-shaped protrusions 52 can withstand the impact force without defects such as cracks; but also ensures a good sintering effect during the laser sintering sealing process, thus ensuring the encapsulation effect.

[0144] Generally, the maximum size K3 of the dot-shaped groove 42 is the same as the maximum size K4 of the dot-shaped protrusion 52.

[0145] Referring to Figure 12 、 Figure 18 and Figure 19 As shown, the cross-section of the dot-shaped groove 42 parallel to the substrate 1 can be set to a circle, polygon, ellipse, circular ring, polygon ring, ellipse ring, etc.; that is, the dot-shaped groove 42 can be set to a cylindrical groove, polygon cylindrical groove, elliptical cylindrical groove, circular ring cylindrical groove, polygon ring cylindrical groove, elliptical ring cylindrical groove, etc.

[0146] The cross-section of the dot-shaped protrusion 52 parallel to the substrate 1 is set to a circle, polygon, ellipse, circular ring, polygon ring, ellipse ring, etc.; that is, the dot-shaped protrusion 52 can be set to a cylinder, polygon column, elliptical cylinder, circular ring column, polygon ring column, elliptical ring column, etc.

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

[0148] In addition, the shapes of the multiple dot-shaped grooves 42 and the shapes of the multiple dot-shaped protrusions 52 provided on the same display panel can 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 Figure 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, and so on.

[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, and so on.

[0158] If the depth H1 of the curved groove 41 is too large, the bottom of the curved groove 41 will be severely inclined, resulting in a narrow width of the formed curved groove 41, making it difficult for the glass glue to flow to the bottom of the curved groove 41, and it is easy to form voids or gaps, that is, a missing part is formed in the formed curved protrusion 51, resulting in a reduction in the strength of the curved protrusion 51. After being impacted, the curved protrusion 51 is prone to defects such as cracks, affecting the encapsulation effect.

[0159] 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 adhesion between the curved protrusion 51 and the curved groove 41 will be too small, resulting in the curved protrusion 51 being easily detached from the curved groove 41, affecting the encapsulation effect.

[0160] The above numerical range not only ensures that the curved protrusion 51 will not form a missing part 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 encapsulation 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, and so on.

[0163] The height H4 of the dot-shaped protrusion 52 is greater than or equal to 300 nm and less than or equal to 700 nm. For example, the height H4 of the dot-shaped protrusion 52 can be 330 nm, 350 nm, 380 nm, 400 nm, 420 nm, 450 nm, 470 nm, 500 nm, 530 nm, 550 nm, 580 nm, 600 nm, 620 nm, 650 nm, 670 nm, and so on.

[0164] If the depth H3 of the dot-shaped groove 42 is too large, the bottom of the dot-shaped groove 42 will be severely inclined, resulting in a narrow width of the formed dot-shaped groove 42, making it difficult for the glass glue to flow to the bottom of the dot-shaped groove 42, and it is easy to form voids or gaps, that is, the formed dot-shaped protrusion 52 forms 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 defects such as cracks, affecting the encapsulation 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 will be too small, and the adhesion between the dot-shaped protrusion 52 and the dot-shaped groove 42 will be too small, resulting in the dot-shaped protrusion 52 being easily disengaged from the dot-shaped groove 42, affecting the encapsulation effect.

[0166] The above numerical range not only ensures that the dot-shaped protrusion 52 will not form a missing part to ensure the strength of the dot-shaped protrusion 52, but also ensures the adhesion between the dot-shaped protrusion 52 and the dot-shaped groove 42 to ensure the encapsulation effect.

[0167] The second direction Y is perpendicular to the surface of the substrate 1 on which the display backplane 10 is provided.

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

[0169] Based on the same inventive concept, the exemplary embodiments of the present disclosure also provide a display device, which may include the display panel described in any one of the 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 common display device type in the art can be used. Specifically, for example, mobile devices such as mobile phones, wearable devices such as watches, VR devices, etc. Those skilled in the art can make corresponding selections according to the specific use 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 compositions. Taking a display as an example, specifically, for example, a housing, a circuit board, a power cord, etc. Those skilled in the art can make corresponding supplements according to the specific use 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 embodiments of the present invention are the same as those of the display panel provided by the above exemplary embodiments, and will not be elaborated here.

[0173] Those skilled in the art will readily conceive of other implementations 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 known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A display panel having a display area and a non-display area, the non-display area being disposed around the display area, characterized in that, the display panel comprises: a substrate; a display backplane disposed on one side of the substrate. In the non-display area, the display backplane includes a base layer, and a curved groove and a dot-shaped groove are provided on the base layer, and the curved groove and the dot-shaped groove are disposed around the display area; a glass glue layer bonded at least to the side of the base layer facing away from the substrate, and a curved protrusion and a dot-shaped protrusion are provided on the surface of the glass glue layer close to the substrate, the curved protrusion being bonded in the curved groove, and the dot-shaped protrusion being bonded in the dot-shaped groove; a cover plate bonded to the side of the glass glue layer facing away from the substrate.

2. The display panel according to claim 1, characterized in that, the curved groove surrounds at least a part of the dot-shaped groove, and the curved protrusion surrounds at least a part 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 for at least one circle.

4. The display panel according to claim 3, characterized in that, the curved groove and the curved protrusion are arranged around the display area for at least two circles, 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 spaced curved sub-grooves, and the plurality of curved sub-grooves are arranged around the display area for at least one circle; the curved protrusion includes a plurality of spaced curved sub-protrusions, and the plurality of curved sub-protrusions are arranged around the display area for at least one circle.

6. The display panel according to claim 5, characterized in that, the plurality of curved sub-grooves are arranged around the display area for at least two circles, and a groove spacer is provided between two adjacent curved sub-grooves in the same circle, and the curved sub-groove in one of the adjacent two circles is disposed opposite to the groove spacer in the other circle; the plurality of curved sub-protrusions are arranged around the display area for at least two circles, and a spacer is provided between two adjacent curved sub-protrusions in the same circle, and the curved sub-protrusion in one of the adjacent two circles is disposed opposite to the spacer in 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, and the curved groove unit is arranged as a ring, an elliptical ring, a polygonal ring, an arc or a broken line structure; the curved protrusion includes a curved protrusion unit, and the curved protrusion unit is arranged as a 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. Adjacent two of the curved groove units are axially symmetrically arranged or centrally symmetrically arranged. The axis of symmetry is the first dividing line between adjacent two of the 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. Adjacent two of the curved protrusion units are axially symmetrically arranged or centrally symmetrically arranged. The axis of symmetry is the second dividing line between adjacent two of the 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, A plurality of the dot-shaped grooves on the same side of the display area are arranged in at least one straight line, and a plurality of the dot-shaped protrusions 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 adjacent two of the dot-shaped grooves on the same straight line is the same, and the distance between adjacent two of the dot-shaped protrusions 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 μm and less than or equal to 50 μm, and the wall thickness of the curved protrusion is greater than or equal to 5 μm and less than or equal to 50 μm.

12. The display panel according to any one of claims 1 to 6, characterized in that, In a first direction, the maximum dimension of the dot-shaped groove is greater than or equal to 10 μm and less than or equal to 80 μm, the maximum dimension of the dot-shaped protrusion is greater than or equal to 10 μm and less than or equal to 80 μm, and the first direction is parallel to the surface of the substrate on which the display backplane is provided.

13. The display panel according to claim 12, characterized in that, When the dot-shaped groove and the dot-shaped protrusion are arranged in a ring shape, the ring width of the dot-shaped groove is greater than or equal to 5 μm and less than or equal to 30 μm, and the ring width of the dot-shaped protrusion is greater than or equal to 5 μm and less than or equal to 30 μm.

14. The display panel according to any one of claims 1 to 6, characterized in that, In a second direction, the depth of the curved groove is greater than or equal to 300 nm and less than or equal to 700 nm, the height of the curved protrusion is greater than or equal to 300 nm and less than or equal to 700 nm; the depth of the dot-shaped groove is greater than or equal to 300 nm and less than or equal to 700 nm, the height of the dot-shaped protrusion is greater than or equal to 300 nm and less than or equal to 700 nm, and the second direction is perpendicular to the surface of the substrate on which the display backplane is provided.

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 circular, polygonal, elliptical, circular ring-shaped, polygonal ring-shaped, elliptical ring-shaped; the cross-section of the dot-shaped protrusion parallel to the substrate is cylindrical, polygonal, elliptical, circular ring-shaped, polygonal ring-shaped, elliptical ring-shaped.

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, It is 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, It is characterized in that A display panel comprising any one of claims 1 to 17.

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