Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises at least two sub-panels, two adjacent sub-panels are spliced with each other, a medium material is filled between the two spliced sub-panels, and a side of the sub-panel in contact with the medium material is a splicing surface; the splicing surface of at least one of the two spliced sub-panels comprises a groove. The groove can serve as a pipeline for the flow of the medium material in the splicing process, which helps the flow of the medium material and prevents the generation of air bubbles in the medium material, thereby improving the problem that the splicing joint is visible due to the scattering of light by the air bubbles.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] At present, large-size display panels such as billboards are usually formed by splicing a plurality of small-size display panels. When the small-size display panels are spliced, the back plate of the panel at the splicing position is discontinuous, and there is a splicing seam visible to the human eye. The splicing seam at the splicing position affects the overall display effect. SUMMARY

[0003] Embodiments of the present application provide a display panel and a display device to solve the problem of visible splicing seam affecting display effect in the prior art.

[0004] In a first aspect, embodiments of the present application provide a display panel, which comprises at least two sub-panels, two adjacent sub-panels are spliced with each other, a medium material is filled between the two spliced sub-panels, and the side of the sub-panel in contact with the medium material is a splicing surface.

[0005] The splicing surface of at least one of the two spliced sub-panels comprises a groove.

[0006] In a second aspect, based on the same inventive concept, embodiments of the present application provide a display device comprising the display panel provided by any of the embodiments of the present application.

[0007] The display panel and the display device provided by the embodiments of the present application have the following beneficial effects: a groove is arranged on the splicing surface of at least one of the two spliced sub-panels, and when the two sub-panels are spliced, the groove can serve as a pipeline for the flow of the medium material, which helps the flow of the medium material in the splicing process, so that the medium material can be well filled between the two sub-panels, and the poor flow of the medium material is avoided.

[0008] Bubbles are generated, which can avoid the scattering of light by the bubbles, thereby improving the phenomenon that the bubbles cause the splicing seam to be visible, and thus improving the overall display effect. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0010] Figure 1A display panel schematic diagram provided for an embodiment of the present application;

[0011] Figure 2 For Figure 1 A cross-sectional schematic view at the position of the tangent A-A';

[0012] Figure 3 Another display panel schematic diagram provided for an embodiment of the present application;

[0013] Figure 4 Another display panel schematic diagram provided for an embodiment of the present application;

[0014] Figure 5 For Figure 4 Another cross-sectional schematic view at the position of the tangent B-B';

[0015] Figure 6 For Figure 4 Another cross-sectional schematic view at the position of the tangent B-B';

[0016] Figure 7 For Figure 4 A splicing surface schematic diagram of the sub-display panel;

[0017] Figure 8 For Figure 4 Another cross-sectional schematic view at the position of the tangent B-B';

[0018] Figure 9 Another display panel schematic diagram provided for an embodiment of the present application;

[0019] Figure 10 For Figure 9 Another cross-sectional schematic view at the position of the tangent C-C';

[0020] Figure 11 Another display panel schematic diagram provided for an embodiment of the present application;

[0021] Figure 12 Another display panel schematic diagram provided for an embodiment of the present application;

[0022] Figure 13 Another display panel schematic diagram provided for an embodiment of the present application;

[0023] Figure 14 Another display panel schematic diagram provided for an embodiment of the present application;

[0024] Figure 15 Another display panel schematic diagram provided for an embodiment of the present application;

[0025] Figure 16 Another display panel schematic diagram provided for an embodiment of the present application;

[0026] Figure 17 Another display panel schematic diagram provided for an embodiment of the present application;

[0027] Figure 18 Another display panel schematic diagram provided for an embodiment of the present application;

[0028] DD230757I-IMP

[0029] Figure 19 Another display panel schematic diagram provided for an embodiment of the present application;

[0030] Figure 20 Another display panel schematic diagram provided for an embodiment of the present application;

[0031] Figure 21 Another display panel schematic diagram provided for an embodiment of the present application;

[0032] Figure 22 Another display panel schematic diagram provided for an embodiment of the present application;

[0033] Figure 23 Another display panel schematic diagram provided for an embodiment of the present application;

[0034] Figure 24 Another display panel schematic diagram provided for an embodiment of the present application;

[0035] Figure 25 A display device schematic diagram provided for an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] The terms used in the embodiments of the present application are merely for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0038] In the prior art, glue material is arranged between small size panels which are spliced with each other to realize splicing, and the splicing joint between the two spliced panels is in a long and narrow shape, the width of the splicing joint is very narrow (generally less than 1 / 2 or 1 / 5 of the pixel size), and the glue material is difficult to be filled in the narrow splicing joint, and the glue material is prone to bubbles during splicing. The bubbles at the splicing joint can cause light scattering, so that the splicing joint is easily seen, and the display effect is affected.

[0039] In order to solve the problems in the prior art, the embodiment of the present application provides a display panel, a groove is arranged on the splicing surface of the sub-panels which are spliced with each other, the groove can be used as a pipeline for the medium material to flow between the two spliced sub-panels, the arrangement of the groove helps the flow of the medium material, and bubbles at the splicing joint can be avoided, so that the bubbles causing the splicing joint to be visible due to light scattering are avoided.

[0040] DD230757I-IMP

[0041] The embodiment of the present application provides a display panel, the display panel is formed by splicing at least two sub-panels, the display panel can include n*m sub-panels in n rows and m columns, n and m are positive integers, and n and m are not both 1. For example, when n=1 and m=2, the display panel includes two sub-panels; when n=2 and m=2, the display panel includes four sub-panels. The embodiment of the present application does not limit the specific number of sub-panels in the display panel, when the size of the sub-panels is fixed, the more the number of sub-panels is, the larger the size of the display panel formed by splicing finally is.

[0042] Taking the case that the display panel includes two sub-panels when n=1 and m=2. Figure 1 A display panel provided by the embodiment of the present application is shown in the figure, Figure 2 A cross-sectional view of the display panel is shown in the figure, Figure 1 A top view of the display panel is shown in the figure, Figure 1 A cross-sectional view of the display panel is shown in the figure, Figure 1 A top view of the display panel is shown in the figure, Figure 2 In the display panel, two adjacent sub-panels 10 are spliced with each other, and the medium material 20 is filled between the two spliced sub-panels 10, the medium material 20 has viscosity and can bond the two spliced sub-panels 10 into one. The side surface of the sub-panel 10 which contacts the medium material 20 is the splicing surface M. Taking the rectangular sub-panel 10 as an example, the sub-panel 10 has one splicing surface M, so the sub-panel 10 is spliced with only one other sub-panel 10; the sub-panel 10 has two splicing surfaces M, so the sub-panel 10 can be spliced with two other sub-panels 10. The splicing surface M of at least one of the two spliced sub-panels 10 includes a groove 30. The groove 30 can be used as a pipeline for the medium material to flow between the two spliced sub-panels 10. Figure 2It can be seen that the medium material 20 is accommodated in the recess 30. That is, a part of the medium material 20 extruded between the two splicing surfaces M is accommodated in the recess 30.

[0043] The display panel provided by the embodiment of the present application can be manufactured by a process of splicing after coating the medium material. First, the medium material 20 is coated on the side of the sub-panel 10 to be spliced (as the splicing surface M after splicing), and then the sides coated with the medium material 20 are aligned and spliced. The display panel can also be spliced by a process of coating the medium material after alignment. First, the two sub-panels 10 to be spliced are aligned and spliced so that the two sides of the two sub-panels 10 are opposite, and then the medium material 20 is filled between the two opposite sides so that the two sub-panels 10 are bonded by the medium material 20.

[0044] Figure 2 It is shown that the recess 30 is arranged on the two splicing surfaces M of the two sub-panels 10 to be spliced. In other embodiments, the recess 30 is arranged on the splicing surface M of only one of the two sub-panels 10 to be spliced, which is not shown in the figure.

[0045] DD230757I-IMP

[0046] The embodiment of the present application provides a display panel. The recess 30 is arranged on the splicing surface M of at least one of the two sub-panels 10 to be spliced. When the two sub-panels 10 are spliced, the recess 30 can serve as a pipeline for the medium material 20 to flow, which helps the medium material 20 to flow in the splicing process, so that the medium material 20 can be well filled between the two sub-panels 10, avoiding the generation of bubbles due to poor flow of the medium material 20, and thus avoiding the scattering of light by the bubbles. Therefore, the phenomenon that the splicing joint is visible due to the scattering of light by the bubbles can be improved, so that the overall display effect can be improved.

[0047] In some embodiments, as shown in Figure 2 The two splicing surfaces M of the two sub-panels 10 to be spliced each include the recess 30. Such an arrangement can increase the pipeline for the medium material 20 to flow between the two sub-panels 10 to be spliced, which is more conducive to the flow of the medium material 20 in the splicing process, and ensures that the medium material 20 is well filled between the two sub-panels 10 without generating bubbles, thereby improving the phenomenon that the splicing joint is visible due to the scattering of light by the bubbles.

[0048] In some embodiments, as shown in Figure 1 The two sub-panels 10 shown in Figure 1The direction 'a' is the splicing direction of the first sub-panel 11 and the second sub-panel 12. The splicing direction of the two sub-panels 10 is also the arrangement direction of the two spliced ​​sub-panels 10. The groove 30 includes a first groove 31 and a second groove 32; the splicing surface M of the first sub-panel 11 includes the first groove 31, and the splicing surface M of the second sub-panel 12 includes the second groove 32. Figure 2 As can be seen, along the splicing direction a of the first sub-panel 11 and the second sub-panel 12, the first groove 31 and the second groove 32 overlap. This arrangement makes the space in the overlapping area of ​​the first groove 31 and the second groove 32 larger, which is more conducive to the flow of the medium material 20 at the overlapping position.

[0049] In other implementations, Figure 3 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Figure 3 The diagram shows the disassembly of the two interlocking sub-panels 10. Figure 3 The diagram illustrates the two splicing surfaces M of the two sub-panels 10, and the misalignment of the grooves on the two splicing surfaces M after splicing. For example... Figure 3 As shown, the sub-panel 10 includes a first sub-panel 11 and a second sub-panel 12 that are spliced ​​together; the splicing surface M of the first sub-panel 11 includes a third groove 33, and the splicing surface M of the second sub-panel 12 includes a fourth groove 34. Figure 3 The dashed lines in the image indicate the alignment positions of the first sub-panel 11 and the second sub-panel 12. It can be understood that after the first sub-panel 11 and the second sub-panel 12 are aligned, the alignment is along the first sub-panel DD230757I-IMP.

[0050] The splicing direction of panel 11 and the second sub-panel 12 is such that the third groove 33 and the fourth groove 34 are misaligned. The third groove 33 and the fourth groove 34 each form a channel for the flow of the dielectric material 20 at different positions. This arrangement creates more channels that facilitate the flow of the dielectric material 20, promoting relatively uniform flow of the dielectric material 20 at multiple locations between the two sub-panels 10 during the splicing process. Furthermore, this embodiment reduces the number of grooves 30 on a single splicing surface M, thus minimizing the impact of grooves 30 on the overall structure of the display panel and making it easier to manufacture.

[0051] In some implementations... Figure 4 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Figure 5 for Figure 4 A schematic diagram of a cross-section at the location of the tangent line BB′. Figure 4 A top view of a sub-panel 10 is shown, illustrating the splicing surface M of the sub-panel 10, and the groove 30 located on the splicing surface M is indicated by dashed lines. Figure 4 The light-emitting devices in sub-panel 10 are not shown. For example... Figure 5As shown, the sub-panel 10 includes a substrate 01, a driving layer 02, and a light-emitting device 03. Optionally, the substrate 01 is a rigid substrate, such as a glass substrate. The thickness of the substrate 01 is 0.4 mm to 0.8 mm, for example, 0.5 mm or 0.7 mm. The driving layer 02 includes pixel circuitry, which drives the light-emitting device 03 to emit light. The light-emitting device 03 can be a light-emitting diode. The side surfaces of the substrate 01 and the driving layer 02 form the splicing surface M of the sub-panel 10. The groove 30 includes a first sub-groove 30-1; wherein, the side surface of the substrate 01 is recessed into the interior of the substrate 01 to form the first sub-groove 30-1. The first sub-groove 30-1 is named according to its film layer position on the sub-panel 10. The first to fourth grooves mentioned above are names of the grooves 30 used to illustrate the relative positional relationship of the grooves 30 on the two spliced ​​sub-panels 10. The first to fourth grooves mentioned above can be the first sub-groove 30-1. In this embodiment, a first sub-groove 30-1 is formed on the side surface of the substrate 01. In the film layer stacking structure of the sub-panel 10, the substrate 01 mainly plays a supporting role, and no functional structure for display is involved in the substrate 01. Forming the first sub-groove 30-1 on the side surface of the substrate 01 has little impact on the overall structure of the sub-panel 10, and the substrate 01 is relatively thick, making the process of forming the first sub-groove 30-1 easy to implement.

[0052] In some embodiments, the first sub-groove 30-1 can be formed on the side of the substrate 01 by grinding or laser filamentation.

[0053] In some implementations... Figure 6 for Figure 4 Another cross-sectional diagram at the location of the tangent BB′.

[0054] DD230757I-IMP

[0055] Figure 7 for Figure 4 A schematic diagram of one type of spliced ​​surface of a neutron panel. (Combined with...) Figure 6 and Figure 7 Looking at the plane e perpendicular to the sub-panel 10, the length L1 of the first sub-groove 30-1 is equal to the thickness d1 of the substrate 01. This direction e, perpendicular to the plane e of the sub-panel 10, is also the thickness direction of the substrate 01. In other words, the first sub-groove 30-1 penetrates the substrate 01 in the thickness direction. This arrangement maximizes the length of the first sub-groove 30-1 in the thickness direction of the substrate 01, extending the flow channel of the dielectric material 20 in direction e. This increases the accommodating space of the first sub-groove 30-1, which in turn increases the flow channel of the dielectric material 20. This allows the dielectric material 20 to fill the space between the two sub-panels 10 effectively without generating air bubbles, thereby reducing the visibility of the seam caused by light scattering from air bubbles.

[0056] In some implementations... Figure 8 for Figure 4 Another cross-sectional diagram at the location of the tangent BB′. (See diagram below.) Figure 8 As shown, the groove 30 includes a second sub-groove 30-2, which is connected to the first sub-groove 30-1 along the direction e perpendicular to the plane of the sub-panel 10. The second sub-groove 30-2 is formed by recessing the side of the driving layer 02 into its interior. The second sub-groove 30-2 is named according to its position on the film layer of the sub-panel 10. The first to fourth grooves mentioned above can be formed by connecting the first sub-groove 30-1 and the second sub-groove 30-2. In this embodiment, the first sub-groove 30-1 formed on the side of the substrate 01 and the second sub-groove 30-2 formed on the side of the driving layer 02 are connected, which increases the length of the groove 30 on the splicing surface M in the direction e, extending the length of the flow channel of the dielectric material 20 in the direction e. This facilitates the flow of the dielectric material 20 during the splicing process, allowing the dielectric material 20 to fill the space between the two sub-panels 10 effectively and preventing the formation of air bubbles.

[0057] The driving layer 02 includes a conductive layer on the substrate 01 and an insulating layer between adjacent conductive layers. The conductive layers are used to form the functional structures in the driving layer 02. Multiple insulating layers are stacked at the end of the sub-panel 10 near the splicing surface M; that is, the sides of the multiple stacked insulating layers form the sides of the driving layer 02. In this embodiment of the invention, the sides of the driving layer 02 are recessed inward to form a second sub-groove 30-2; that is, at least one insulating layer's side is recessed inward to form a second sub-groove 30-2.

[0058] In some embodiments, the light-emitting device 03 is a light-emitting diode, such as a Micro LED. After the Micro LED is transferred onto the driving layer 02 of the sub-panel 10, the light-emitting device 03 is encapsulated, and then the groove DD230757I-IMP on the splicing surface of the sub-panel 10 is fabricated.

[0059] 30. In other embodiments, the Micro LED transfer process can be performed after the corresponding grooves 30 are formed on the sides of the driving layer 02 and the substrate 01.

[0060] like Figure 8As shown, the driving layer 02 includes a pixel circuit 021, which includes transistors and a storage capacitor Cst. The driving layer 02 includes a plurality of signal lines, including at least scan lines, data lines, power supply lines, and light-emitting control lines. The driving layer 02 includes at least a semiconductor layer, a first metal layer, a second metal layer, a third metal layer, and insulating layers between the layers, wherein the active layer of the transistors is in the semiconductor layer, the gate of the transistors is in the first metal layer, one plate of the storage capacitor Cst is in the first metal layer, and the other plate is in the second metal layer. The scan lines are in the first metal layer, the light-emitting control lines are in the second metal layer, and the power supply lines and the data lines are in the third metal layer.

[0061] In some embodiments, the driving layer 02 includes a semiconductor layer, a first metal layer, a second metal layer, a third metal layer, and a fourth metal layer above the substrate 01, the scan lines are in the first metal layer, the light-emitting control lines are in the second metal layer, the positive power supply lines and the data lines are in the third metal layer, and the negative power supply lines are in the fourth metal layer. The positive power supply lines provide positive power supply signals for the pixel circuit 021, the first electrode of the light-emitting device 03 is coupled to the pixel circuit 021, the second electrode of the light-emitting device 03 is coupled to the negative power supply lines, and the negative power supply lines provide negative power supply signals.

[0062] In some embodiments, as shown in FIG. 1, the first sub-groove 30-1 and the second sub-groove 30-2 are arranged in the same direction e perpendicular to the plane of the sub-panel 10. Figure 8 As shown, the length L2 of the second sub-groove 30-2 in the direction e perpendicular to the plane of the sub-panel 10 is less than the thickness d2 of the driving layer 02. That is, the second sub-groove 30-2 does not penetrate the driving layer 02 in the thickness direction of the driving layer 02. A portion of the insulating layer is reserved above the second sub-groove 30-2, which ensures the integrity of the surface of the driving layer 02 away from the substrate 01, and the structure above the driving layer 02 is not affected by the groove. For example, in some embodiments, the light-emitting device 03 overlaps with the groove 30, and the light-emitting device 03 does not need to be avoided when the groove 30 is arranged, and the arrangement of the light-emitting device 03 does not need to be changed due to the arrangement of the groove 30, so that the arrangement of the light-emitting device 03 at the splicing position of the two sub-panels 10 is not affected, thereby avoiding the change of the arrangement of the light-emitting device 03 affecting the display effect.

[0063] In some embodiments, as shown in FIG. 1, the first sub-groove 30-1 and the second sub-groove 30-2 are arranged in the same direction e perpendicular to the plane of the sub-panel 10. Figure 9 Another schematic diagram of a display panel provided by an embodiment of the present application is shown in FIG. 2. Figure 10 As shown in FIG. 2, the display panel includes a substrate 01, a driving layer 02, and a light-emitting device 03. Figure 9 Another schematic diagram of a cross section at the position of the tangent line C-C' in FIG. 1 is shown in FIG. 3. Figure 9 A top view of one sub-panel DD230757I-IMP is shown in FIG. 4.

[0064] A top view of the sub-panel 10 is shown in FIG. 5. Figure 9The arrangement of the light emitting device 03 is only schematically represented and is not intended to limit the present application. In combination with Figure 9 and Figure 10 As can be seen, along the direction e perpendicular to the plane in which the sub-panel 10 lies, the groove 30 comprises a first sub-groove 30-1 and a second sub-groove 30-2 which are in communication with each other, and the length L2 of the second sub-groove 30-2 is equal to the thickness d2 of the driving layer. Such an arrangement makes the length of the second sub-groove 30-2 in the thickness direction of the driving layer the longest, prolongs the length of the pipe for the medium material 20 to flow in the direction e, and can increase the accommodation space of the second sub-groove 30-2, which is beneficial to increasing the pipe for the medium material 20 to flow.

[0065] Figure 9 and Figure 10 As can be seen, along the direction e perpendicular to the plane in which the sub-panel 10 lies, the length L2 of the second sub-groove 30-2 is equal to the thickness d2 of the driving layer, and the upper surface 022 of the driving layer 02 on the side away from the substrate 01 (as shown in the schematic in Figure 9 , the second sub-groove 30-2 will be exposed. Figure 9 The region Q1 is the region in which the upper surface 022 of the driving layer 02 exposes the second sub-groove 30-2, and the first slot K1 in which the upper surface 022 of the driving layer 02 exposes the second sub-groove 30-2, wherein the first slot K1 does not overlap with the light emitting device 03.

[0066] In the embodiments of the present application, the groove 30 is formed by recessing the side of the sub-panel 10 towards the inside of the sub-panel 10; and along the direction e perpendicular to the plane in which the sub-panel 10 lies, the light emitting device 03 does not overlap with the groove 30. In some embodiments, the upper surface of the driving layer 02 on the side away from the substrate 01 does not expose the groove 30. As shown in Figure 5 or Figure 6 As shown, the groove 30 is formed by recessing the side of the substrate 01 in the sub-panel 10 towards the inside of the sub-panel 10, and the groove 30 does not overlap with the light emitting device 03. The groove 30 is formed in the side of the substrate 01, and the pixel circuit connected to the light emitting device 03 is usually arranged below the light emitting device 03. Arranging the light emitting device 03 not to overlap with the groove 30 can avoid affecting the support of the substrate 01 to the pixel circuit in the driving layer 02 after the groove 30 is arranged. Figure 8 As shown, the groove 30 is formed by recessing the side of the substrate 01 in the sub-panel 10 towards the inside of the sub-panel 10, and the groove 30 does not overlap with the light emitting device 03. The groove 30 is formed in the side of the substrate 01, and the pixel circuit connected to the light emitting device 03 is usually arranged below the light emitting device 03. Arranging the light emitting device 03 not to overlap with the groove 30 can avoid affecting the support of the substrate 01 to the pixel circuit in the driving layer 02 after the groove 30 is arranged. Figure 9 andFigure 10 As shown, the side of the part of the film layer in the driving layer 02 in the sub-panel 10 and the inner groove jointly form a second sub-groove 30-2, and the upper surface 022 of the driving layer 02 exposes the first DD 230757I-IMP

[0067] The first notch K1 does not overlap with the light emitting device 03. In this way, it can be ensured that the arrangement of the light emitting device 03 is not affected after the groove 30 is set, and the arrangement rule of the light emitting device 03 is avoided to affect the display effect. Moreover, the first notch K1 does not overlap with the light emitting device 03, which can ensure that the fixed position of the light emitting device 03 has a good supporting effect on it.

[0068] In some embodiments, Figure 11 Another display panel provided by the embodiment of the present application is shown in the following schematic diagram, Figure 11 The display panel is a partial schematic diagram, which shows the splicing position of two sub-panels 10 spliced with each other. As shown in the figure, Figure 11 As shown, the splicing seam extending along the first direction x is formed between the two sub-panels 10 spliced with each other, Figure 11 The splicing seam is not marked, and it can be understood that the medium material 20 is filled between the two spliced sub-panels 10, and the splicing seam is formed between the two sub-panels 10 spliced with each other. In the sub-panel 10: a plurality of light emitting devices 03 are arranged into a light emitting device column along the first direction y, and the light emitting device column includes a first light emitting device column 03L. The plurality of light emitting devices 03 in the first light emitting device column 03L are arranged at equal intervals, that is, the interval of the adjacent two light emitting devices 03 in the first light emitting device column 03L is equal. The first light emitting device column 03L is adjacent to the splicing surface M, that is, the light emitting device column closest to the splicing surface M in the sub-panel 10 is the first light emitting device column 03L. The first light emitting device column 03L includes adjacent first and second light emitting devices 03-1 and 03-2, and the first notch K1 is located between the first and second light emitting devices 03-1 and 03-2. The first notch K1 can be combined with the first light emitting device column 03L to form a first groove 30-1. Figure 9 And Figure 10 The embodiment can be understood. In this embodiment, the first notch K1 is formed by the upper surface of the driving layer 02 away from the substrate 01 exposing the second sub-groove 30-2. In this way, the length of the second sub-groove 30-2 in the thickness direction of the driving layer 02 is the longest, which can increase the length of the pipeline of the medium material 20 flowing in the direction e, and is beneficial to increase the pipeline of the medium material 20. In addition, the first notch K1 is located between the first and second light emitting devices 03-1 and 03-2, and the arrangement rule of the plurality of light emitting devices 03 arranged at equal intervals in the first light emitting device column 03L is not affected by the setting of the first notch K1. It can be ensured that the arrangement rule of the light emitting device 03 near the splicing seam is not changed after the groove 30 is set, so as to avoid affecting the display effect at the splicing position.

[0069] In addition, as Figure 11 shown in the sub-panel 10, the light emitting devices 03 are arranged into light emitting device rows in the second direction x, and the first notch K1 can also be considered as being located between two adjacent light emitting device rows.

[0070] DD230757I-IMP

[0071] In some embodiments, Figure 12 Another display panel schematic diagram provided for embodiments of the present application is shown in Figure 12 A partial schematic diagram of a splicing surface M of a sub-panel 10 is shown. As Figure 12 shown, the splicing surface M includes a groove 30, the groove 30 includes a first end 1D and a second end 2D, wherein the width of the first end 1D along the first direction y is less than the width of the second end 2D along the first direction y. The first direction y is the extension direction of the splicing seam between two sub-panels 10 spliced with each other, which can be understood in combination with the related description in Figure 11 It can be understood that the splicing surface M of the sub-panel 10 has a certain length along the first direction y, and the splicing surface M also has a certain length along the direction e perpendicular to the plane of the sub-panel 10, and the first direction y is perpendicular to the direction e perpendicular to the plane of the sub-panel 10.

[0072] The sub-panel 10 includes a back plate and light emitting devices 03 located on one side of the back plate; wherein the back plate at least includes a substrate 01 and a driving layer 02, and the side surface of the back plate serves as the splicing surface M of the sub-panel 10. The back plate further includes an opposite bottom surface 04 and a top surface 05, and the splicing surface M is connected between the bottom surface 04 and the top surface 05. In combination with Figure 8 The cross-sectional view shown, the top surface 05 of the back plate is located on the side of the bottom surface 04 close to the light emitting devices 03, and when the back plate includes the substrate 01 and the driving layer 02, the surface of the substrate 01 away from the driving layer 02 side is the bottom surface 04, and the surface of the driving layer 02 away from the substrate 01 side is the top surface 05.

[0073] As Figure 12 shown, the groove 30 extends in the direction from the bottom surface 04 to the top surface 05, and includes opposite first and second ends 1D and 2D along the extension direction, and the first end 1D is located on the side of the second end 2D close to the light emitting device Figure 12 (not shown). The first end 1D is closer to the driving layer 02 or the first end 1D is located on the driving layer 02, the width of the first end 1D of the groove 30 is smaller, which can extend the length of the pipeline for the flow of the medium material 20 in the direction e while reducing the impact on the circuit lines in the driving layer 02, to ensure that the groove 30 can better assist the flow of the medium material 20 while also being beneficial to ensure the etching uniformity during the manufacturing of the driving layer 02.

[0074] In some embodiments,Figure 13 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Figure 13 This illustrates the splicing surface M of sub-panel 10, as shown below. Figure 13 As shown, the backplate includes a substrate 01 and a driving layer 02, with the sides of the substrate 01 and the driving layer 02 forming a splicing surface M. The surface of the driving layer 02 furthest from the substrate 01 is the upper surface 022, which is also the top surface 05; the first end 1D is located on the same horizontal plane as the upper surface 022; the substrate 01 includes a lower surface 011, which is the far side of the substrate 01.

[0075] The surface on the side away from the driving layer 02, the lower surface 011 is the bottom surface 04; the second end 2D is located on the same horizontal plane as the lower surface 011. In this embodiment, the groove 30 penetrates the substrate 01 and the driving layer 02 in the direction e perpendicular to the plane where the sub-panel 10 is located. This arrangement makes the length of the groove 30 in the direction e perpendicular to the plane where the sub-panel 10 is located larger, making the channel for the flow of the dielectric material 20 the longest in the direction e, which is more conducive to the flow of the dielectric material 20. Moreover, the dielectric material 20 is more easily discharged from the end of the splicing surface M in the direction e, preventing the generation of air bubbles during the splicing process. In addition, the width of the first end 1D along the first direction y is smaller than the width of the second end 2D along the first direction y, which can reduce the area of ​​the first end 1D exposed on the top surface 05. Figure 9 In the embodiment, the first end 1D exposed on the top surface 05 is the first slot K1. This setting can prevent the first end 1D of the groove 30 from affecting the arrangement of the light-emitting device 03, and ensure that the arrangement pattern of the light-emitting device 03 near the splicing surface M is the same as the arrangement pattern of other positions in the sub-panel 10, thereby avoiding the change in the arrangement pattern of the light-emitting device 03 from affecting the display effect.

[0076] In some implementations... Figure 14 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Figure 14 This illustrates the splicing surface M of sub-panel 10. For example... Figure 14 As shown, the length of the splicing surface M along the first direction y is greater than its length along the direction e perpendicular to the plane containing the sub-panel 10. The first direction y is the extension direction of the splicing seam (refer to...). Figure 11 (For comprehension purposes), the direction e perpendicular to the plane of the sub-panel is perpendicular to the first direction y. The groove 30 includes a fifth groove 35, the length of which along the first direction y is greater than its length along the direction e perpendicular to the plane of the sub-panel 10. The fifth groove 35 can be... Figure 5 or Figure 6 The first sub-groove 30-1 shown in the diagram, and the fifth groove 35 can also be... Figure 8 The illustration includes the first sub-groove 30-1 and the second sub-groove 30-2.

[0077] The length of the splicing surface M along the first direction y is substantially equal to the length of the sub-panel 10 along the first direction y, and the length of the splicing surface M along the direction e perpendicular to the plane of the sub-panel 10 is substantially equal to the thickness of the sub-panel 10. The length of the sub-panel 10 along the first direction y is much greater than the thickness of the sub-panel 10, so the length of the splicing surface M along the first direction y is much greater than the length of the splicing surface M along the direction e perpendicular to the plane of the sub-panel 10. Therefore, the freedom of arranging the groove 30 along the first direction y is greater. The fifth groove 35 is arranged in a long strip shape, and the long side of the fifth groove 35 extends along the first direction y. The fifth groove 35 can help the flow of the medium material 20 at more positions along the extension direction of the splicing seam.

[0078] The pipeline for assisting the flow of the medium material 20 in the fifth groove 35 has continuity along the first direction y, and the flow of the medium material 20 is smoother. The medium material 20 can be filled between the two sub-panels 10 more easily, and the generation of bubbles can be avoided.

[0079] In some embodiments, Figure 15 Another display panel provided by the embodiment of the present application is shown in FIG. 6. Figure 15 The splicing surface M of a sub-panel 10 is shown in FIG. 6. Figure 15 As shown in FIG. 6, the length L3 of the fifth groove 30 along the first direction y is equal to the length L4 of the splicing surface M along the first direction y. In this embodiment, the fifth groove 35 can help the flow of the medium material 20 at different positions along the extension direction of the splicing seam. The flow of the medium material 20 between the two sub-panels 10 is smoother in the splicing process, and the medium material 20 can be discharged outward from the end of the splicing surface M along the first direction y more easily. The generation of bubbles of the medium material 20 can be avoided, and the visibility of the splicing seam can be improved.

[0080] In some embodiments, Figure 16 Another display panel provided by the embodiment of the present application is shown in FIG. 6. Figure 16 As shown in FIG. 6, two fifth grooves 35 are arranged on the splicing surface M. The flow of the medium material 20 at different positions along the direction e perpendicular to the plane of the sub-panel 10 can be assisted by the two fifth grooves 35. The medium material 20 can be filled between the two sub-panels 10 more easily, and the generation of bubbles can be avoided. Optionally, the fifth groove 35 is made on the side surface of the substrate 01, that is, the side surface of the substrate 01 is recessed inward to form the fifth groove 35.

[0081] The number of the fifth grooves 35 made on the splicing surface M is not limited in the embodiment of the present application, and can be designed according to specific requirements.

[0082] In some embodiments,Figure 17 Another display panel schematic diagram provided by an embodiment of the present application, Figure 17 The splicing surface M of a sub-panel 10 is shown, the length of the splicing surface M along the first direction y is greater than the length of the splicing surface M along the direction e perpendicular to the plane where the sub-panel 10 is located, the first direction y is the extension direction of the splicing seam between two sub-panels 10 spliced with each other, and the direction e perpendicular to the plane where the sub-panel 10 is located is perpendicular to the first direction y. As shown, Figure 17 The groove 30 includes a sixth groove 36 and a seventh groove 37; the length of the sixth groove 36 along the first direction y is less than the length of the seventh groove 37 along the first direction y; the length of the sixth groove 36 along the direction e perpendicular to the plane where the sub-panel 10 is located is greater than the length of the seventh groove 37 along the direction e perpendicular to the plane where the sub-panel 10 is located; the sixth groove 36 and the seventh groove 37 are in communication with each other.

[0083] The seventh groove 37 can be Figure 14 or Figure 15 The fifth groove 35 is shown. The sixth groove 36 can be Figure 12 or Figure 13 The groove 30 shown, that is, the length of the sixth groove 36 along the direction e is less than or equal to the length of the splicing surface M along the direction e. Figure 17 In some embodiments, the length of the seventh groove 37 along the first direction y is equal to the length of the splicing surface M along the first direction y, and the length of the sixth groove 36 along the direction e is equal to the length of the splicing surface M along the direction e. The sixth groove 36 helps the flow of the medium material 20 along the direction e in the splicing process, the seventh groove 37 helps the flow of the medium material 20 along the first direction y in the splicing process, and the sixth groove 36 and the seventh groove 37 are in communication with each other, so that the flow of the medium material 20 along the direction e and along the first direction y is related to each other, the flow of the medium material 20 is smoother, and the generation of bubbles in the splicing process can be more effectively prevented.

[0084] Figure 17 In some embodiments, the sixth groove 36 is a long strip-shaped groove, and in other embodiments, the sixth groove 36 can be Figure 12 a groove with a gradually changing width (the length along the first direction y is the width). Figure 18 Another display panel schematic diagram provided by an embodiment of the present application is shown in FIG. 6, and Figure 18 The sixth groove 36 and the seventh groove 37 are in communication with each other, the length of the sixth groove 36 along the first direction y is the width of the sixth groove 36, and the width of the sixth groove 36 along the direction e gradually changes.

[0085] In some embodiments, Figure 19 Another display panel schematic diagram provided by an embodiment of the present application is shown in FIG. 6, andFigure 19 As shown, the sixth groove 36 has a length L5 along the first direction y, and the seventh groove 37 has a length L6 along the direction e perpendicular to the plane where the sub-panel 10 is located, and L5 is greater than L6. The length of the splicing surface M along the first direction y is greater than the length along the direction e, so the seventh groove 37 has a relatively small space along the direction e, while the sixth groove 36 has a relatively large space along the first direction y. The length L5 of the sixth groove 36 along the first direction y is relatively large, which can be conducive to increasing the flow space of the medium material 20 along the first direction y in the sixth groove 36, so that the sixth groove 36 is more conducive to the flow of the medium material 20. In addition, since the length of the sixth groove 36 along the direction e is greater than the length of the seventh groove 37 along the direction e, the sixth groove 36 can assist the flow of the medium material 20 at more positions along the direction e than the seventh groove 37. Further, the length L5 of the sixth groove 36 along the first direction y is set to be relatively large, so the sixth groove 36 can act on a wider range of medium material 20.

[0086] Thus, the flow of the medium material 20 is more conducive.

[0087] In some embodiments, Figure 20 Another display panel provided by an embodiment of the present application is shown in FIG. 6. As shown in FIG. 6, a plurality of grooves 30 are arranged along the first direction y on the splicing surface M. The first direction y is the extension direction of the splicing seam between two sub-panels 10 that are spliced with each other. The plurality of grooves 30 arranged along the first direction y on the splicing surface M are respectively used as flow channels to assist the flow of the medium material 20 at different positions, so as to ensure that no air bubbles are generated at each position of the splicing seam. Figure 20

[0088] In some embodiments, Figure 21 Another display panel provided by an embodiment of the present application is shown in FIG. 6. As shown in FIG. 6, a plurality of grooves 30 are arranged along the first direction y on the splicing surface M. The first direction y is the extension direction of the splicing seam between two sub-panels 10 that are spliced with each other. The plurality of grooves 30 arranged along the first direction y on the splicing surface M are respectively used as flow channels to assist the flow of the medium material 20 at different positions, so as to ensure that no air bubbles are generated at each position of the splicing seam. Figure 21 ​As shown, along the first direction y, the splicing surface M includes two end portions M1 and a middle portion M2 between the two end portions M1; the setting density of the grooves 30 in the middle portion M2 is greater than the setting density of the grooves 30 in the end portions M1. When the two sub-panels 10 are spliced, the medium material 20 in contact with the end portions M1 of the splicing surface M is more easily discharged by the edges of the end portions M1, while the medium material 20 in contact with the middle portion M2 is relatively not easy to be discharged outward. In the middle portion M2, the setting density of the grooves 30 is greater, and a greater flow channel is formed by the grooves 30 with greater density to ensure that the medium material 20 in contact with the middle portion M2 will not generate bubbles. The setting density of the grooves 30 in the end portions M1 is smaller, and the medium material 20 in contact with the end portions M1 can not only be discharged by the edges of the end portions M1, but also flow in the flow channel formed by the grooves 30, thereby ensuring that the medium material 20 in contact with the end portions M1 will not generate bubbles. The embodiment differentiates the setting density of the grooves 30 in the middle portion M2 and the end portions M1, which can balance the difference in discharge capacity of the medium material 20 in the two portions, and ensure that the medium material 20 at the splicing seam position will not generate bubbles.

[0089] Figure 20 and Figure 21 The shape of the groove 30 is only schematically represented, Figure 20 and Figure 21 The groove 30 in the embodiment can be any one or more of the above embodiments.

[0090] In some embodiments, Figure 22 Another display panel schematic diagram provided by the embodiment of the present application is shown in FIG. 6. Figure 22 As shown, the groove 30 is in a U shape, and the opening of the U shape faces the bottom side of the sub-panel 10. The bottom side of the sub-panel 10 is the side of the sub-panel 10 away from the light-emitting surface. The U-shaped groove 30 can simultaneously facilitate the flow of the medium material 20 in the first direction y and the direction e, so that the flow of the medium material 20 in the two directions is interconnected, and the flow of the medium material 20 is more smooth, which can avoid bubbles generated by poor flow of the medium material 20 in the splicing process.

[0091] The poor flow of the medium material 20 generates bubbles. In addition, when the bottom side of the sub-panel 10 exposes the slot of the groove 30, the medium material 20 flowing in the groove 30 can be discharged by the slot of the bottom side, thereby more facilitating the flow of the medium material 20.

[0092] In other embodiments, Figure 23 Another display panel schematic diagram provided by the embodiment of the present application is shown in FIG. 6. Figure 23As shown, the groove 30 is H-shaped. The H-shaped groove 30 can increase the flow direction of the medium material 20 in the groove 30, and the flow channels in the groove 30 are interconnected, making the flow of the medium material 20 smoother and avoiding the generation of air bubbles due to poor flow of the medium material 20 during the splicing process.

[0093] In some implementations... Figure 24 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 24 As shown, the sub-panel 10 includes a back plate 101, with the light-emitting device 03 located on one side of the back plate 101. The side of the back plate 101 is a splicing surface M. The back plate 101 includes at least a substrate and a driving layer. A groove 30 is recessed from the splicing surface M into the sub-panel 10, forming an interconnected inner groove 30-3 and an outer groove 30-4. The inner groove 30-3 is closer to the interior of the sub-panel than the outer groove 30-4. Along the plane e of the sub-panel 10, the width of the outer groove 30-4 is greater than the width of the inner groove 30-3. The inner groove 30-3 allows for a greater depth of extension into the sub-panel 10, resulting in a larger overall accommodating space and facilitating the flow of the dielectric material 20. Furthermore, the smaller width of the inner groove 30-3 along direction e ensures that even if the inner groove 30-3 extends deeply into the sub-panel, it will not adversely affect the structural layers within the sub-panel.

[0094] Figure 24 The groove 30 shown in the diagram can be an elongated groove extending along the first direction y, or it can be a groove extending along the direction e perpendicular to the plane where the sub-panel is located.

[0095] In some implementations, such as Figure 2 As shown, the depth of the groove 30 recessed from the splicing surface M into the sub-panel 10 is d, where 1μm ≤ d ≤ 100μm. The volume of the groove 30 is the product of the depth d and the area of ​​the exposed groove 30 on the splicing surface M. The larger the volume of the groove 30, the larger its internal space, which is more conducive to the flow of the medium material 20. Whether the medium material 20 can fill well between the two sub-panels 10 depends not only on the volume of the groove 30 but also on the viscosity of the medium material 20. In application, the volume of the groove 30 can be designed according to the viscosity of the medium material 20. Bubbles generated by materials with higher viscosity are more difficult to float on the surface of the material and are not easy to expel. For media with higher viscosity, such as DD230757I-IMP...

[0096] The material 20 can set the volume of the groove 30 to be relatively large, and the material 20 can set the volume of the groove 30 to be relatively small for a medium with relatively small viscosity. The area of the splicing surface M of the sub-panel 10 is relatively large, and the area of the groove 30 exposed on the splicing surface M can be set to be relatively large, and the depth d of the groove 30 recessed inwardly is relatively small, so that the groove 30 has a large enough volume while avoiding the groove 30 being recessed inwardly too deep to affect the stability of the overall structure, and the groove 30 can also avoid affecting the arrangement of the circuit structure when the groove 30 is made on the side surface of the driving layer.

[0097] In some embodiments, the medium material 20 includes a transparent material. The transparent material has light transmission performance, so that the light emitted by the light emitting device 03 near the splicing position towards the medium material 20 will not be absorbed by the medium material 20, thereby reducing the difference between the brightness at the splicing position and the brightness at other positions of the sub-panel 10, and improving the display effect.

[0098] In other embodiments, the medium material 20 includes a light shielding adhesive material. The light shielding adhesive material has a certain absorption effect on light, so that even if the medium material 20 produces bubbles during the splicing process, the light scattered by the bubbles will be absorbed by the light shielding adhesive material, thereby improving the phenomenon that the splicing joint is visible due to scattered light.

[0099] Based on the same inventive concept, the embodiments of the present application also provide a display device, Figure 25 A display device provided by the embodiments of the present application is shown in a schematic diagram as Figure 25 As shown, the display device includes the display panel 100 provided by any of the embodiments of the present application. The display device provided by the embodiments of the present application can be a large-size display device, such as an information bulletin board or an advertising board, and can also be applied to transparent display, such as a shop window, a window of a building or a vehicle, or a transparent television, etc.

[0100] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0101] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized by, The display panel comprises at least two sub-panels, two adjacent sub-panels are spliced with each other, and a medium material is filled between the two spliced sub-panels, and a side of the sub-panel in contact with the medium material is a splicing surface; The splicing surface of at least one of the two spliced sub-panels comprises a groove; wherein, The two spliced sub-panels form a splicing joint extending in a first direction; the sub-panel comprises a back plate and a light-emitting device located on one side of the back plate; the back plate comprises at least a substrate and a driving layer; the back plate comprises opposite bottom and top surfaces, the top surface is located on the side of the bottom surface close to the light-emitting device, the groove extends in the direction from the bottom surface to the top surface, and in the extension direction, the groove comprises opposite first and second ends, and the first end is located on the side of the second end close to the light-emitting device; in the plane of the splicing surface: the width of the first end in the first direction is less than the width of the second end in the first direction; Or, the two spliced sub-panels form a splicing joint extending in a first direction; on the splicing surface, a plurality of grooves are arranged in the first direction; in the first direction, the splicing surface comprises two end portions and an intermediate portion between the two end portions; the setting density of the grooves in the intermediate portion is greater than that in the end portions; Or, the groove is recessed from the splicing surface to the inside of the sub-panel to form interconnected inner and outer grooves; in the direction perpendicular to the plane of the sub-panel, the width of the outer groove is greater than that of the inner groove; Or, the two spliced sub-panels form a splicing joint extending in a first direction, the length of the splicing surface in the first direction is greater than its length in the direction perpendicular to the plane of the sub-panel, and the first direction is perpendicular to the direction perpendicular to the plane of the sub-panel; the fifth groove has a length in the first direction greater than its length in the direction perpendicular to the plane of the sub-panel, and the length of the fifth groove in the direction perpendicular to the plane of the sub-panel is less than the length of the splicing surface in the direction perpendicular to the plane of the sub-panel.

2. The display panel of claim 1, wherein, Both of the opposite splicing surfaces of the two spliced sub-panels comprise the groove.

3. The display panel of claim 2, wherein, The groove comprises a first groove and a second groove, and the sub-panel comprises a first sub-panel and a second sub-panel spliced with each other; the first sub-panel comprises the first groove, and the second sub-panel comprises the second groove; in the splicing direction of the first sub-panel and the second sub-panel, the first groove and the second groove overlap.

4. The display panel of claim 2, wherein, The recesses include a third recess and a fourth recess, and the sub-panel includes a first sub-panel and a second sub-panel that are spliced with each other; the first sub-panel includes the third recess, and the second sub-panel includes the fourth recess; the third recess and the fourth recess are misaligned in a splicing direction of the first sub-panel and the second sub-panel.

5. The display panel of claim 1, wherein, the recess includes a first sub-recess; the sub-panel includes a substrate, and a side surface of the substrate is recessed towards an inside of the substrate to form the first sub-recess.

6. The display panel of claim 5, wherein, a length of the first sub-recess in a direction perpendicular to a plane in which the sub-panel is located is equal to a thickness of the substrate.

7. The display panel of claim 5, wherein, the recess includes a second sub-recess, and the second sub-recess and the first sub-recess are connected in the direction perpendicular to the plane in which the sub-panel is located; the sub-panel further includes a driving layer located at one side of the substrate, and a side surface of the driving layer is recessed towards an inside of the driving layer to form the second sub-recess.

8. The display panel of claim 7, wherein, a length of the second sub-recess in the direction perpendicular to the plane in which the sub-panel is located is less than a thickness of the driving layer.

9. The display panel of claim 7, wherein, a length of the second sub-recess in the direction perpendicular to the plane in which the sub-panel is located is equal to the thickness of the driving layer.

10. The display panel of claim 1, wherein, the recess is formed by recessing a side surface of the sub-panel towards an inside of the sub-panel; the sub-panel includes a light emitting device; in a direction perpendicular to a plane in which the sub-panel is located, the light emitting device does not overlap with the recess.

11. The display panel of claim 10, wherein, a splicing seam extending in a first direction is formed between two sub-panels that are spliced with each other; in the sub-panel: a plurality of the light emitting devices are arranged into a light emitting device column in the first direction, the light emitting device column includes a first light emitting device column, and a plurality of the light emitting devices in the first light emitting device column are arranged at equal intervals, and the first light emitting device column is adjacent to the splicing surface; the first light emitting device column includes a first light emitting device and a second light emitting device that are adjacent to each other, and at least one of the recesses has a first slot, and the first slot is located between the first light emitting device and the second light emitting device.

12. The display panel of claim 11, wherein, the driving layer is located between the substrate and the light emitting device; the driving layer includes an upper surface, the upper surface is a surface of the driving layer that is away from the substrate, the first end is located in a same horizontal plane as the upper surface; and the substrate includes a lower surface, the lower surface is a surface of the substrate that is away from the driving layer, and the second end is located in a same horizontal plane as the lower surface.

13. The display panel of claim 1, wherein, ​ The length of the fifth groove along the first direction is equal to the length of the splicing surface along the first direction. 14.The display panel of claim 1, wherein, The two sub-panels spliced with each other form a splicing joint extending along a first direction, and a length of the splicing surface along the first direction is greater than a length of the splicing surface along a direction perpendicular to a plane in which the sub-panels are located, and the first direction is perpendicular to the direction perpendicular to the plane in which the sub-panels are located. The groove comprises a sixth groove and a seventh groove. The length of the sixth groove along the first direction is less than the length of the seventh groove along the first direction, and a length of the sixth groove along a direction perpendicular to a plane in which the sub-panels are located is greater than a length of the seventh groove along the direction perpendicular to the plane in which the sub-panels are located. The sixth groove and the seventh groove are in communication with each other. 15.The display panel of claim 14, wherein, The length of the sixth groove along the first direction is greater than the length of the seventh groove along the direction perpendicular to the plane in which the sub-panels are located. 16.The display panel of claim 1, wherein, The groove is in a U shape, and an opening of the U shape faces a bottom side of the sub-panel. 17.The display panel of claim 1, wherein, The groove is in an H shape. 18.The display panel of claim 1, wherein, A depth of the groove recessed into the sub-panel from the splicing surface is d, and 1 μm≤d≤100 μm. 19.The display panel of claim 1, wherein, The medium material comprises a transparent material. 20.The display panel of claim 1, wherein, The medium material comprises a light-shielding adhesive material.

21. A display device comprising: A display panel according to any one of claims 1 to 20.

Images