Display panel, manufacturing method thereof, and display device

Abstract

The present invention relates to the field of display technologies, and particularly to a display panel, a manufacturing method thereof, and a display device. The display panel of the present invention includes a first sub-panel and a second sub-panel spliced along a first direction. The first sub-panel includes a first substrate and a first driving layer, and the second sub-panel includes a second substrate and a second driving layer. In the present invention, an edge of the first driving layer is spaced apart from an edge of the first substrate by d1, and an edge of the second driving layer is spaced apart from an edge of the second substrate by d2. When splicing, in a direction perpendicular to the plane where the display panel is located, a surface of the first substrate close to the first driving layer overlaps with a surface of the second substrate close to the second driving layer. In this way, the splicing seam after splicing the first sub-panel and the second sub-panel becomes narrower, the influence of the splicing seam on the image quality is reduced, and the visual effect of the display panel is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and more particularly, to a display panel, a manufacturing method thereof, and a display device. Background Art

[0002] A splicing screen is composed of two or more sub-panels spliced together. Each sub-panel is a complete display unit. After multiple sub-panels are assembled and installed, a combined large picture can be displayed. Currently, whether it is a splicing screen composed of two sub-panels or a splicing screen composed of multiple sub-panels, there is a major defect, that is: the splicing seam. The splicing seam is the panel border, where no picture can be displayed, and it will refract and reflect light, resulting in the visible splicing seam when the splicing screen is displayed, affecting the visual effect. Summary of the Invention

[0003] In view of this, the present invention provides a display panel, a manufacturing method thereof, and a display device, aiming to reduce the width of the splicing seam between sub-panels, thereby improving the visual effect of the display panel.

[0004] The technical solution of the present invention is as follows:

[0005] In a first aspect, the present invention provides a display panel, including a first sub-panel and a second sub-panel spliced along a first direction, where the first direction is parallel to the plane where the light-emitting surface of the display panel is located;

[0006] The first sub-panel includes a first substrate and a first driving layer, and the first driving layer is located on one side of the first substrate; among the surfaces on the side of the first substrate close to the first driving layer, the edge adjacent to the second sub-panel is the first edge, and the edge of the first driving layer close to the second sub-panel is the second edge. Along the first direction, the distance between the first edge and the second edge is d1, and d1>0;

[0007] The second sub-panel includes a second substrate and a second driving layer, and the second driving layer is located on one side of the second substrate; among the surfaces on the side of the second substrate close to the second driving layer, the edge adjacent to the first sub-panel is the third edge, and the edge of the second driving layer close to the first sub-panel is the fourth edge. Along the first direction, the distance between the third edge and the fourth edge is d2, and d2>0;

[0008] The first substrate includes a first splicing surface, and the second substrate includes a second splicing surface. The first sub-panel and the second sub-panel are spliced with each other through the first splicing surface and the second splicing surface;

[0009] Along the direction perpendicular to the plane where the display panel is located, the surface of the first substrate on the side close to the first driving layer overlaps with the surface of the second substrate on the side close to the second driving layer.

[0010] In a second aspect, the present invention further provides a manufacturing method of a display panel, including the following steps:

[0011] Fabricating the first sub-panel: forming a first driving layer on one side of the first substrate; cutting the first substrate such that one side edge where the first substrate is spliced with the second substrate forms a first splicing surface;

[0012] Fabricating the second sub-panel: forming a second driving layer on one side of the second substrate; cutting the second substrate such that one side edge where the second substrate is spliced with the first substrate forms a second splicing surface;

[0013] Splicing: splicing the first sub-panel and the second sub-panel through the first splicing surface and the second splicing surface, along the direction perpendicular to the plane where the first substrate is located, the surface of the first substrate on the side close to the first driving layer and the surface of the second substrate on the side close to the second driving layer overlap in projection.

[0014] On the other hand, the present invention further provides a display device, including the display panel provided in the first aspect of the present invention.

[0015] Compared with the related art, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:

[0016] In the present invention, on one side where the first sub-panel and the second sub-panel are spliced, along the first direction, the edge of the first driving layer is spaced apart from the edge of the first substrate by d1; on one side where the second sub-panel and the first sub-panel are spliced, along the first direction, the edge of the second driving layer is spaced apart from the edge of the second substrate by d2; when the first sub-panel and the second sub-panel are spliced, the first sub-panel and the second sub-panel are staggered in the height direction, so that the surface of the first substrate on the side close to the first driving layer and the surface of the second substrate on the side close to the second driving layer overlap. In this way, the splicing seam after splicing the first sub-panel and the second sub-panel becomes narrower, the influence of the splicing seam on the image quality is reduced, and the visual effect of the display panel is improved.

[0017] Of course, it is not necessarily required that any product implementing the present invention simultaneously achieves all the above-mentioned technical effects.

[0018] Through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0020] Figure 1 Shown is a schematic structural diagram of the display panel provided by the embodiment of the present invention before splicing;

[0021] Figure 2The following is a schematic structural diagram of the spliced display panel provided by the embodiment of the present invention;

[0022] Figure 3 The following is a splicing structure diagram of the display panel in the related art;

[0023] Figure 4 The following is a schematic structural diagram of the display panel before splicing provided by the embodiment of the present invention;

[0024] Figure 5 The following is a schematic structural diagram of the display panel after splicing provided by the embodiment of the present invention;

[0025] Figure 6 The following is a schematic structural diagram of the display panel before splicing provided by the embodiment of the present invention;

[0026] Figure 7 The following is a schematic structural diagram of the display panel after splicing provided by the embodiment of the present invention;

[0027] Figure 8 The following is a schematic structural diagram of a display panel provided by the embodiment of the present invention;

[0028] Figure 9 The following is a schematic structural diagram of a display device provided by the embodiment of the present invention. Detailed implementation manners

[0029] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or its use.

[0031] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0032] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0033] Without departing from the spirit or scope of the present invention, various modifications and variations can be made to the present invention, which will be apparent to those skilled in the art. Therefore, the present invention is intended to cover modifications and variations of the present invention that fall within the scope of the corresponding claims (claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in the embodiments of the present invention can be combined with each other without contradiction.

[0034] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0035] The display panel of the present invention includes a first sub-panel and a second sub-panel spliced along a first direction, the first direction being parallel to the plane where the light-emitting surface of the display panel is located; the first sub-panel includes a first substrate and a first driving layer, the first driving layer being located on one side of the first substrate; among the surface of the first substrate close to the first driving layer, the edge adjacent to the second sub-panel is the first edge, and the edge of the first driving layer close to the second sub-panel is the second edge. Along the first direction, the distance between the first edge and the second edge is d1, and d1>0; the second sub-panel includes a second substrate and a second driving layer, the second driving layer being located on one side of the second substrate; among the surface of the second substrate close to the second driving layer, the edge adjacent to the first sub-panel is the third edge, and the edge of the second driving layer close to the first sub-panel is the fourth edge. Along the first direction, the distance between the third edge and the fourth edge is d2, and d2>0; the first substrate includes a first splicing surface, the second substrate includes a second splicing surface, and the first sub-panel and the second sub-panel are spliced with each other through the first splicing surface and the second splicing surface; along the direction perpendicular to the plane where the display panel is located, the surface of the first substrate close to the first driving layer overlaps with the surface of the second substrate close to the second driving layer. Through the structural design of the first sub-panel and the second sub-panel, when the first sub-panel and the second sub-panel are spliced, along the direction perpendicular to the plane where the display panel is located, the surface of the first substrate close to the first driving layer overlaps with the surface of the second substrate close to the second driving layer. In this way, the distance between the light-emitting elements of the first sub-panel and the second sub-panel can be reduced, thereby reducing the splicing seam.

[0036] The above is the core idea of the present invention. Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the embodiments of the present invention.

[0037] Figure 1 The figure shows a schematic structural diagram of the display panel provided by the embodiment of the present invention before splicing. Figure 2The following is a schematic structural diagram of the spliced display panel provided by the embodiment of the present invention. Please refer to Figure 1 and Figure 2 , the display panel of the present invention includes a first sub-panel 1 and a second sub-panel 2 spliced along a first direction, and the first direction is parallel to the plane where the light-emitting surface of the display panel is located; the first sub-panel 1 includes a first substrate 11 and a first driving layer 12, and the first driving layer 12 is located on one side of the first substrate 11; among the surface of the first substrate 11 close to the first driving layer 12, the edge adjacent to the second sub-panel 2 is the first edge, and the edge of the first driving layer 12 close to the second sub-panel 2 is the second edge. Along the first direction, the distance between the first edge and the second edge is d1, and d1>0; the second sub-panel 2 includes a second substrate 21 and a second driving layer 22, and the second driving layer 22 is located on one side of the second substrate 21; among the surface of the second substrate 21 close to the second driving layer 22, the edge adjacent to the first sub-panel 1 is the third edge, and the edge of the second driving layer 22 close to the first sub-panel 1 is the fourth edge. Along the first direction, the distance between the third edge and the fourth edge is d2, and d2>0; the first substrate 11 includes a first splicing surface 111, and the second substrate 21 includes a second splicing surface 211. The first sub-panel 1 and the second sub-panel 2 are spliced with each other through the first splicing surface 111 and the second splicing surface 211; along the direction perpendicular to the plane where the display panel is located, the surface of the first substrate 11 close to the first driving layer 12 overlaps with the surface of the second substrate 21 close to the second driving layer 22.

[0038] Figure 3 The following is a schematic splicing structure diagram of a display panel in the related art. The display panel includes a first sub-panel 1' and a second sub-panel 2' spliced along a first direction, and the first direction is parallel to the plane where the light-emitting surface of the display panel is located; the first sub-panel 1' includes a first substrate 11', a first driving layer 12' and a first light-emitting element layer 13', the first driving layer 12' is located on one side of the first substrate 11', and the first light-emitting element layer 13' is located on the side of the first driving layer 12' away from the first substrate 11'. The frame width of the first sub-panel 1' close to the second sub-panel 2' is d1'; the second sub-panel 2' includes a second substrate 21', a second driving layer 22' and a second light-emitting element layer 23', the second driving layer 22' is located on one side of the second substrate 21', and the second light-emitting element layer 23' is located on the side of the second driving layer 22' away from the second substrate 21'. The frame width of the second sub-panel 2' close to the first sub-panel 1' is d2'; when splicing, in the direction perpendicular to the plane where the display panel is located, there is no overlap between the first sub-panel 1' and the second sub-panel 2'. Therefore, the width of the splicing seam after the first sub-panel 1' and the second sub-panel 2' are spliced is the sum of d1' and d2'.

[0039] Specifically, please compare Figure 2 withFigure 3 For comparison, in the present invention, on one side where the first sub-panel 1 and the second sub-panel 2 are spliced, along the first direction, the edge of the first driving layer 12 is spaced apart from the edge of the first substrate 11 by d1, and d1 is less than or equal to d1'; on one side where the second sub-panel 2 and the first sub-panel 1 are spliced, along the first direction, the edge of the second driving layer 22 is spaced apart from the edge of the second substrate 21 by d2, and d2 is less than or equal to d2'; the setting of the distance d1 and the distance d2 provides conditions for the overlap of the first sub-panel 1 and the second sub-panel 2; when the first sub-panel 1 and the second sub-panel 2 are spliced, the first sub-panel 1 and the second sub-panel 2 are staggered in the height direction, so that the surface of the first substrate 11 on the side close to the first driving layer 12 overlaps with the surface of the second substrate 21 on the side close to the second driving layer 22. Thus, after splicing, the width of the splicing seam of the spliced first sub-panel 1 and second sub-panel 2 is less than the sum of d1 and d2; therefore, compared with the related art, the display panel structure of the present invention effectively reduces the width of the splicing seam, which helps to improve the display effect.

[0040] Please continue to refer to Figure 1 With Figure 2 , it should be explained that the surface of the first substrate 11 on the side close to the first driving layer 12 only refers to the surface of the first substrate 11 parallel to the plane of the display panel, excluding the splicing surface 111 having an angle with the plane of the display panel; the surface of the second substrate 21 on the side close to the second driving layer 22 only refers to the surface of the second substrate parallel to the plane of the display panel, excluding the splicing surface 211 having an angle with the plane of the display panel.

[0041] Please combine Figure 1 , Figure 2 And Figure 3 , in order to make the width of the splicing seam of the spliced first sub-panel 1 and second sub-panel 2 less than the sum of d1 and d2; as mentioned above, it is necessary to make the edge of the first driving layer 12 spaced apart from the edge of the first substrate 11 by d1; make the edge of the second driving layer 22 spaced apart from the edge of the second substrate 21 by d2; then, during the manufacturing process of the first sub-panel 1, after the driving layer on one side of the first substrate 11 is manufactured, the driving layer film layer in the area corresponding to d1 can be removed by etching; generally speaking, the area corresponding to d1 is the area affected by heat during substrate cutting. Since the display panel will undergo the substrate cutting process during the manufacturing process, heat will be generated during the cutting process. In order to avoid the influence of heat on the function of the driving layer, no functional devices or circuits will be provided in the driving layer in the area corresponding to d1; based on this, the driving layer film layer in the area corresponding to d1 is an inorganic layer and an organic layer, so this part of the area can be removed by etching means without affecting the function of the driving layer. Similarly, the formation of d2 at the second driving layer 22 is the same as the formation method of d1 at the first driving layer 12.

[0042] Based on the above, in the present invention, the edge of the first driving layer 12 is spaced apart from the edge of the first substrate 11 by d1, and the edge of the second driving layer 22 is spaced apart from the edge of the second substrate 21 by d2; during splicing, in the direction perpendicular to the plane of the display panel, the surface of the first substrate 11 on the side close to the first driving layer 12 overlaps with the surface of the second substrate 21 on the side close to the second driving layer 22. In this way, the distance between the first light-emitting element 131 provided on the first driving layer 11 and the second light-emitting element 231 provided on the second driving layer 21 can be shortened, achieving the effect of reducing the width of the splicing seam of the display panel while not affecting the display functions of each sub-panel.

[0043] Specifically, there are various forms of the first splicing surface 111 and the second splicing surface 211 of the present invention. Figure 4 FIG. is a schematic structural diagram of a display panel before splicing provided by an embodiment of the present invention. Figure 5 FIG. is a schematic structural diagram of a display panel after splicing provided by an embodiment of the present invention.

[0044] Please refer to Figure 4 , the first splicing surface 111 includes a first sub-splicing surface 1111 and a second sub-splicing surface 1112; both the first sub-splicing surface 1111 and the second sub-splicing surface 1112 are planes; the first sub-splicing surface 1111 is parallel to the surface of the first substrate 11 on the side close to the first driving layer 12; in the direction perpendicular to the plane of the first substrate 11, the distance between the first sub-splicing surface 1111 and the surface of the first substrate 11 on the side close to the first driving layer 12 is greater than 150 μm; the first sub-splicing surface 1111 and the second sub-splicing surface 1112 are perpendicularly intersecting, and the second sub-splicing surface 1112 is concave towards the inside of the first substrate 11 relative to the first edge of the first substrate 11; the second splicing surface 211 includes a third sub-splicing surface 2111 and a fourth sub-splicing surface 2112, the third sub-splicing surface 2111 is the edge area of the surface of the second substrate 21 on the side close to the second driving layer 22; the fourth sub-splicing surface 2112 is perpendicularly intersecting with the third sub-splicing surface 2111.

[0045] Please refer to Figure 5 , the first sub-splicing surface 1111 and the second sub-splicing surface 1112 form an inner concave area that is concave towards the inside of the first edge of the first substrate 11; when the first sub-panel 1 and the second sub-panel 2 are spliced, the second sub-panel 2 is inserted into the inner concave portion of the first sub-panel 1. In this way, the surface of the first substrate 11 on the side close to the first driving layer 12 overlaps with the surface of the second substrate 21 on the side close to the second driving layer 22.

[0046] Figure 6 FIG. is a schematic structural diagram of a display panel before splicing provided by an embodiment of the present invention; please refer to Figure 6, along the direction perpendicular to the plane where the first substrate 11 is located, the first splicing surface 111 includes alternately arranged first convex surfaces 111A and first concave surfaces 111B; along the direction perpendicular to the plane where the second substrate 12 is located, the second splicing surface 211 includes alternately arranged second convex surfaces 211A and second concave surfaces 211B, the second convex surface 211A fits with the first concave surface 111B, and the second concave surface 211B fits with the first convex surface 111A.

[0047] Figure 7 is a schematic structural diagram of the spliced display panel provided by the embodiment of the present invention; please refer to Figure 7 , when the first sub-panel 1 and the second sub-panel 2 are spliced, the second convex surface 211A is embedded at the first concave surface 111B, and the second concave surface 211B fits with the first convex surface 111A. In this way, an overlapping part is formed between the surface of the first substrate 11 close to the first driving layer 12 and the surface of the second substrate 21 close to the second driving layer 22, and the width of the splicing seam after the first sub-panel 1 and the second sub-panel 2 are spliced is less than the sum of d1 and d2.

[0048] Figure 5 and Figure 7 In the splicing structure shown, the first sub-panel 1 and the second sub-panel 2 are staggered in the height direction, so that the surface of the first substrate 11 close to the first driving layer 12 overlaps with the surface of the second substrate 21 close to the second driving layer 22; in this way, the width of the splicing seam after the first sub-panel 1 and the second sub-panel 2 are spliced is effectively reduced, the influence of the splicing seam on the image quality is reduced, and the visual effect of the display panel is improved.

[0049] Please continue to refer to FIG. Figure 5 and Figure 7 , Figure 5 , Figure 7 The structures of the display panels shown can all achieve the effect of reducing the width of the splicing seam between the first sub-panel 1 and the second sub-panel 2, but Figure 5 and Figure 7 The splicing structures shown need to be noted in the following two aspects:

[0050] On the one hand, please refer to Figure 4 and Figure 5 , the distance J1 between the first splicing surface 1111 and the first substrate 11 close to the first driving layer 12 is a relatively critical parameter. Since the substrate is generally a rigid material, if J1 is too small, there is a risk of breakage in the area of the first substrate 11 at d1; therefore, when manufacturing the first substrate 11, special attention should be paid to controlling the distance J1. For similar reasons, Figure 7The display panel shown also has a risk of being easily broken at the splicing joints. When manufacturing the first substrate 11, special attention should be paid to controlling the shape parameters of the first splicing surface 111; when manufacturing the second substrate 21, special attention should be paid to controlling the shape parameters of the second splicing surface 211.

[0051] On the other hand, please continue to refer to Figure 4 and Figure 5 , in order to avoid the driving layer being damaged by the heat of the laser during laser cutting of the substrate, it is required that the distance J1 between the first sub-splicing surface 1111 and the surface of the first substrate 11 close to the first driving layer 12 is greater than 150 um. For similar reasons, please refer to Figure 7 the structure of the display panel shown. In the direction perpendicular to the plane of the display panel, the setting position of the first concave surface 111B closest to the surface of the first substrate 11 close to the first driving layer 12 is crucial. It is necessary to avoid the influence of the heat generated by laser cutting on the first driving layer 12 when forming the first concave surface 111B by laser cutting; similarly, the setting position of the second concave surface 211B closest to the surface of the second substrate 21 close to the second driving layer 22 is also very important. It is necessary to avoid the influence of the heat generated by laser cutting on the second driving layer 22 when forming the second concave surface 211B by laser cutting.

[0052] Please continue to refer to Figure 1 and Figure 2 , in some embodiments, the first splicing surface 111 includes an inclined surface, and the first splicing surface 111 inclines towards the inside of the first substrate 11 relative to the surface of the first substrate 11 close to the first driving layer 12; the second splicing surface 211 includes an inclined surface, and the second splicing surface 211 inclines towards the outside of the second substrate 21 relative to the surface of the second substrate 21 close to the second driving layer 22; along the direction perpendicular to the plane of the display panel, the surface of the first substrate 11 on the side where the first driving layer 12 is provided is higher than the surface of the second substrate 21 on the side where the second driving layer 22 is provided.

[0053] Specifically, please continue to refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 the first splicing surface 111 and the second splicing surface 112 of the splicing structure shown are both inclined surfaces, and the inclined surface refers to a plane that forms an inclined angle with the plane of the display panel; adopting Figure 1 , Figure 2 the splicing form shown, compared with Figure 5 , Figure 7 the splicing structure shown, has the following advantages:

[0054] First of all: The first sub-panel 1 and the second sub-panel 2 are spliced in the form of an inclined surface, and there will be no such situation as Figure 5 ,Figure 7 Because the middle joint has obvious inward or outward concavity, the local area of ​​the joint is thinner, so the joint is not prone to breakage due to the thinness of the local area.

[0055] Secondly, when the first substrate 11 or the second substrate 21 is cut to form an inclined surface, since the inclined surface has a certain inclination angle, the heat generated by the laser during the cutting process has little effect on the driving layer, which helps to ensure the normal function of the driving layer.

[0056] The surface of the first substrate 11 close to the first driving layer 12 is defined as the top surface, and the side of the first substrate 11 away from the first driving layer 12 is defined as the bottom surface. In some implementations, the inclined surface included in the first splicing surface 111 in the present invention intersects with the top surface and the bottom surface of the first substrate; the surface of the second substrate 21 close to the first driving layer 22 is defined as the top surface. In some implementations, the side of the second substrate 21 away from the first driving layer 22 is defined as the bottom surface. The inclined surface included in the second splicing surface 211 in the present invention intersects with the top surface and the bottom surface of the second substrate 21.

[0057] It should be noted that the core idea of ​​the present invention is to reduce the joint seams by staggered joints between sub-panels without affecting the display function of the panel. Figure 2 , Figure 5 and Figure 7 The several splicing forms of the display panels given above are only several implementations of the splicing structure of the present invention and are not intended to limit the splicing structure of the present invention.

[0058] Figure 8 A schematic diagram of the structure of a display panel provided in an embodiment of the present invention; please refer to Figure 8 A first positioning portion 111C is also provided at the first splicing surface 111. The first positioning portion 111C is concave toward the first substrate 11 or convex toward the second substrate 21 relative to the first splicing surface 111. A second positioning portion 211C that matches the first positioning portion 111C is also provided at the second splicing surface 211.

[0059] Specifically, a first positioning portion 111C is provided at the first splicing surface 111, and a second positioning portion 211C matched with the first positioning portion 111C is provided at the second splicing surface 211; thus, when the first sub-panel 1 and the second sub-panel 2 are spliced, the splicing position can be determined quickly and accurately, thereby improving the splicing efficiency.

[0060] In some optional embodiments of the present invention, d1 is equal to d2; along the splicing direction of the first sub-panel 1 and the second sub-panel 2, the overlapping width of the surface of the first substrate 11 close to the first driving layer 12 and the surface of the second substrate 21 close to the second driving layer 22 is d1, and d1 is equal to 150±30μm.

[0061] Specifically, please continue to refer to Figure 1 With Figure 2 , 150 ± 30 μm is the width of the area affected by the laser heat during laser cutting. Therefore, on the premise of not affecting the function of the driving layer, in order to minimize the width of the splicing seam between the first sub-panel 1 and the second sub-panel 2, d1 is set equal to d2; thus, when the first sub-panel 1 and the second sub-panel 2 are spliced, in the direction perpendicular to the plane of the display panel, the area corresponding to d1 in the first sub-panel 1 overlaps with the area corresponding to d1 in the second sub-panel; then, after the first sub-panel 1 and the second sub-panel 2 are spliced, the width of the splicing seam between the first sub-panel 1 and the second sub-panel 2 is reduced by half, only having the width of one laser heat affected area, that is, 150 ± 30 μm.

[0062] In some alternative embodiments of the present invention, along the direction perpendicular to the plane of the first substrate 11, the thickness of the first substrate 11 is greater than the thickness of the second substrate 21, and the side of the first substrate 11 away from the first driving 12 layer is flush with the side of the second substrate 21 away from the second driving layer 22.

[0063] Specifically, please continue to refer to Figure 1 With Figure 2 , when the first sub-panel 1 and the second sub-panel 2 are spliced, since the first splicing surface 111 is inclined towards the inside of the first substrate 11 relative to the surface of the first substrate 11 close to the first driving layer 12, and the second splicing surface 211 is inclined towards the outside of the second substrate 21 relative to the surface of the second substrate 21 close to the second driving layer 22; in order to make the surface of the first substrate 11 close to the first driving layer 12 overlap with the surface of the second substrate 21 close to the second driving layer 22, so as to achieve the effect of reducing the splicing seam, the first sub-panel 1 and the second sub-panel 2 can only be spliced with a dislocation in the height direction; at the same time, considering aspects such as the installation of the display panel, it is necessary to make the side of the first substrate 11 away from the first driving 12 layer flush with the side of the second substrate 21 away from the second driving layer 22. For this purpose, it can be achieved by using a thicker first substrate 11.

[0064] In some alternative embodiments of the present invention, the side of the first driving layer 12 away from the first substrate 11 is flush with the side of the second driving layer 22 away from the second substrate 21.

[0065] Specifically, please continue to refer to Figure 1 With Figure 2, on the side of the first driving layer 12 away from the first substrate 11, a first light-emitting element layer 13 is arranged; on the side of the second driving layer 22 away from the second substrate 21, a second light-emitting element layer 23 is arranged; based on this, when the side of the first driving layer 12 away from the first substrate 11 is flush with the side of the second driving layer 22 away from the second substrate 21, it is beneficial to ensure that the light-emitting surfaces of the spliced display panels are on the same plane, improving the display effect.

[0066] In some alternative embodiments of the present invention, the first driving layer 11 and the second driving layer 21 have the same thickness; the height difference between the surface of the first substrate 11 close to the first driving layer 12 and the surface of the second substrate 21 close to the second driving layer 22 is h1; a spacer layer 24 is further arranged between the second substrate 21 and the second driving layer 22, and the thickness of the spacer layer 24 is h2, and h2 is equal to h1.

[0067] Specifically, please continue to refer to Figure 1 With Figure 2 , when the first splicing surface 111 and the second splicing surface 211 are inclined surfaces, after the first sub-panel 1 and the second sub-panel 2 are spliced, the surface of the first substrate 11 where the first driving layer 12 is arranged is higher than the surface of the second substrate 21 where the second driving layer 22 is arranged; in order to make up for the height difference h1, a spacer layer 24 is added between the second substrate 21 and the second driving layer 22, so that the light-emitting surfaces of the spliced display panels are on the same plane.

[0068] In some alternative embodiments of the present invention, the first driving layer 12 includes a first organic layer, the second driving layer 22 includes a second organic layer, the thickness of the second organic layer is greater than the thickness of the first organic layer, the thickness difference between the second organic layer and the first organic layer is h3, and the height difference between the surface of the first substrate 11 close to the first driving layer 12 and the surface of the second substrate 21 close to the second driving layer 22 is h1, and h3 is equal to h1.

[0069] Specifically, please continue to refer to Figure 1 With Figure 2 , when the first splicing surface 111 and the second splicing surface 211 are inclined surfaces, after the first sub-panel 1 and the second sub-panel 2 are spliced, the surface of the first substrate 11 where the first driving layer 12 is arranged is higher than the surface of the second substrate 21 where the second driving layer 22 is arranged; in order to make up for the height difference h1, the thickness of the second driving layer 22 can be made greater than the thickness of the first driving layer 12; since it is easier to achieve a height increase of more than a micron by thickening the organic material, therefore, in the present invention, the thickness of the second organic layer is made greater than the thickness of the first organic layer to make up for the height difference h1, so that the light-emitting surfaces of the spliced display panels are on the same plane.

[0070] In some alternative embodiments of the present invention, the included angle between the second splicing surface 211 and the bottom surface of the second substrate 21 is β, and β is less than 45 degrees.

[0071] Specifically, in one case, tanβ = h1 / d1. When d1 is determined, the larger β is, the larger the value of h1 is. Therefore, the higher the thickness to be raised is. According to the capabilities of the process, β is selected to be less than 45°.

[0072] Based on the same inventive concept, the present invention also provides a method for manufacturing the above-mentioned display panel, including the following steps:

[0073] Manufacturing the first sub-panel 1: forming a first driving layer 12 on one side of the first substrate 11; cutting the first substrate 11 so that one side edge where the first substrate 11 is spliced with the second substrate 12 forms a first splicing surface 111;

[0074] Manufacturing the second sub-panel 2: forming a second driving layer 22 on one side of the second substrate 21; cutting the second substrate 21 so that one side edge where the second substrate 21 is spliced with the first substrate 11 forms a second splicing surface 211;

[0075] Splicing: splicing the first sub-panel 1 and the second sub-panel 2 through the first splicing surface 111 and the second splicing surface 211. Along the direction perpendicular to the plane where the first substrate 11 is located, the surface of the first substrate 11 close to the first driving layer 12 and the surface of the second substrate 21 close to the second driving layer 22 overlap in projection.

[0076] In some alternative embodiments of the present invention, the first substrate 11 and the second substrate 21 are different regions of the same substrate.

[0077] Manufacturing the first substrate 11 and the second substrate 21 using the same substrate is beneficial to improving the consistency of the display panel composition and enhancing the production convenience.

[0078] Based on the same inventive concept, the present invention also provides a display device. Please refer to Figure 9 , Figure 9 As shown in the structural schematic diagram of the display device provided by the embodiment of the present invention. The display device 200 provided by this embodiment includes the display panel 100 provided by any one of the above embodiments of the present invention.

[0079] It can be understood that the display device 200 provided by the embodiment of the present invention can be a display screen for a meeting or other display devices with a display function. The present invention does not make specific limitations in this regard. The display device provided by the embodiment of the present invention has the beneficial effects of the display panel provided by the embodiment of the present invention. Specifically, reference can be made to the specific descriptions of the display panel in the above embodiments. This embodiment will not be elaborated here.

[0080] In summary, the display panel, its manufacturing method, and the display device provided by the present invention at least achieve the following beneficial effects:

[0081] When the first sub-panel 1 and the second sub-panel 2 of the present invention are spliced, the first sub-panel 1 and the second sub-panel 2 are staggered in the height direction, so that the surface of the first substrate 11 close to the first driving layer 12 overlaps with the surface of the second substrate 21 close to the second driving layer 22. In this way, after splicing, the width of the splicing seam after splicing the first sub-panel 1 and the second sub-panel 2 is less than the sum of d1 and d2; in this way, the splicing seam after splicing the first sub-panel and the second sub-panel becomes narrower, and the influence of the splicing seam on the image quality is reduced, and the visual effect of the display panel is improved; in addition, the first splicing surface 111 and the second splicing surface 112 of the present invention can be inclined surfaces. In this way, when the first sub-panel 1 and the second sub-panel 2 are spliced, it is not easy to cause local areas at the splicing joints of the first substrate 11 or the second substrate 21 to be broken due to thinness; secondly, when cutting the first substrate 11 or the second substrate 21 to form an inclined surface, due to the inclined surface having a certain inclination angle, the heat generated by the laser during the cutting process has less influence on the driving layer. Thirdly, in some alternative embodiments of the present invention, d1 is equal to d2; along the splicing direction of the first sub-panel 1 and the second sub-panel 2, the overlapping width of the surface of the first substrate 11 close to the first driving layer 12 and the surface of the second substrate 21 close to the second driving layer 22 is d1, and d1 is equal to 150 ± 30 μm; then, after the first sub-panel 1 and the second sub-panel 2 are spliced, the width of the splicing seam between the first sub-panel 1 and the second sub-panel 2 is reduced by half, and there is only the width of one laser thermal influence area, that is, 150 ± 30 μm. Finally, the present invention is provided with a first positioning portion 111C at the first splicing surface 111, and a second positioning portion 211C that fits with the first positioning portion 111C is provided at the second splicing surface 211C; in this way, when the first sub-panel 1 and the second sub-panel 2 are spliced, the splicing position can be quickly and accurately determined, and the splicing efficiency is improved.

[0082] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display panel, characterized in that, it includes a first sub-panel and a second sub-panel spliced along a first direction, and the first direction is parallel to the plane where the light-emitting surface of the display panel is located; the first sub-panel includes a first substrate and a first driving layer, and the first driving layer is located on one side of the first substrate; among the side surfaces of the first substrate close to the first driving layer, the edge adjacent to the second sub-panel is the first edge, and the edge of the first driving layer close to the second sub-panel is the second edge. Along the first direction, the distance between the first edge and the second edge is d1, and d1>0; the second sub-panel includes a second substrate and a second driving layer, and the second driving layer is located on one side of the second substrate; among the side surfaces of the second substrate close to the second driving layer, the edge adjacent to the first sub-panel is the third edge, and the edge of the second driving layer close to the first sub-panel is the fourth edge. Along the first direction, the distance between the third edge and the fourth edge is d2, and d2>0; the first substrate includes a first splicing surface, and the second substrate includes a second splicing surface. The first sub-panel and the second sub-panel are spliced with each other through the first splicing surface and the second splicing surface; the first splicing surface includes an inclined surface, and the first splicing surface is inclined towards the inside of the first substrate relative to the side surface of the first substrate close to the first driving layer; the second splicing surface includes an inclined surface, and the second splicing surface is inclined towards the outside of the second substrate relative to the side surface of the second substrate close to the second driving layer; along the direction perpendicular to the plane where the display panel is located, the surface of the first substrate on the side close to the first driving layer overlaps with the surface of the second substrate on the side close to the second driving layer.

2. The display panel according to claim 1, characterized in that, along the direction perpendicular to the plane where the display panel is located, the surface of the first substrate on the side where the first driving layer is provided is higher than the surface of the second substrate on the side where the second driving layer is provided.

3. The display panel according to claim 2, characterized in that, a first positioning portion is further provided at the first splicing surface, and the first positioning portion is concave towards the first substrate or convex towards the second substrate relative to the first splicing surface; a second positioning portion that fits with the first positioning portion is further provided at the second splicing surface.

4. The display panel according to claim 2, characterized in that, d1 is equal to d2; along the splicing direction of the first sub-panel and the second sub-panel, the overlapping width of the surface of the first substrate on the side close to the first driving layer and the surface of the second substrate on the side close to the second driving layer is d1, and d1 is equal to 150±30 μm.

5. The display panel according to claim 2, characterized in that, along the direction perpendicular to the plane where the first substrate is located, the thickness of the first substrate is greater than the thickness of the second substrate, and the side of the first substrate away from the first driving layer is flush with the side of the second substrate away from the second driving layer.

6. The display panel according to claim 2, wherein, one side of the first driving layer away from the first substrate is flush with one side of the second driving layer away from the second substrate.

7. The display panel according to claim 6, wherein, the first driving layer and the second driving layer have the same thickness; the height difference between the surface of the first substrate close to the first driving layer and the surface of the second substrate close to the second driving layer is h1; a spacer layer is further disposed between the second substrate and the second driving layer, and the thickness of the spacer layer is h2, and h2 is equal to h1.

8. The display panel according to claim 6, wherein, the first driving layer includes a first organic layer, the second driving layer includes a second organic layer, the thickness of the second organic layer is greater than the thickness of the first organic layer, the thickness difference between the second organic layer and the first organic layer is h3, the height difference between the surface of the first substrate close to the first driving layer and the surface of the second substrate close to the second driving layer is h1, and h3 is equal to h1.

9. The display panel according to claim 2, wherein, the included angle between the second splicing surface and the bottom surface of the second substrate is β, and β is less than 45 degrees.

10. The manufacturing method of the display panel according to claim 1, wherein, it includes the following steps: Manufacturing the first sub-panel: forming the first driving layer on one side of the first substrate; Cutting the first substrate so that one side edge where the first substrate is spliced with the second substrate forms the first splicing surface; Manufacturing the second sub-panel: forming the second driving layer on one side of the second substrate; Cutting the second substrate so that one side edge where the second substrate is spliced with the first substrate forms the second splicing surface; Splicing: splicing the first sub-panel and the second sub-panel through the first splicing surface and the second splicing surface, and along the direction perpendicular to the plane where the first substrate is located, the surfaces of the first substrate close to the first driving layer side and the second substrate close to the second driving layer side are projected and overlapped.

11. The manufacturing method of the display panel according to claim 10, wherein, the first substrate and the second substrate are different regions of the same substrate.

12. A display device, wherein: it includes the display panel according to any one of claims 1 to 9.

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