Spliced display modules and electronic devices

Abstract

An embodiment of the present application discloses a spliced display module and an electronic device, wherein the spliced display module includes a first display panel and a second display panel, wherein the first display panel includes a first display area and a first border area, and the first border area is located on at least one side of the first display area; the second display panel is spliced with the first display panel, and the second display panel is arranged on the light-emitting side of the first display panel, and the light-emitting side of the first display panel and the light-emitting side of the second display panel are the same, and the second display panel includes a second display area and a second border area, and the second border area is located at least on one side of the second display area close to the first display panel, and the second border area at least partially overlaps with the first border area, which is beneficial for reducing the splicing seam.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a spliced display module and an electronic device. Background Art

[0002] With the development of display technology, major manufacturers have launched larger display panels. However, due to production process limitations, display panel sizes cannot be increased. This has led to the emergence of spliced display devices. Spliced display devices achieve large-screen displays by splicing two or more screens. Spliced display devices offer a large-scale display effect and an immersive visual experience for users. Therefore, they are widely used in advertising, promotional activities, exhibitions, and other occasions.

[0003] During the research and practice of the prior art, the inventors of this application discovered that in a spliced display device, there is a seam between two adjacent screens. Due to the presence of a certain non-display area on the screen and the influence of the fitting accuracy, the width of the seam will be greater than the sum of the widths of the borders of the two screens, affecting the user's visual experience.

[0004] Therefore, a technical solution that can reduce the splicing seam is urgently needed. Summary of the Invention

[0005] The embodiments of the present application provide a spliced display module and an electronic device, which can reduce the splicing seams of the spliced display device.

[0006] The present invention provides a spliced display module, comprising:

[0007] at least one first display panel, comprising a first display area and a first frame area, wherein the first frame area is located on at least one side of the first display area; and

[0008] At least one second display panel is spliced with the first display panel, the second display panel is arranged on the light-emitting side of the first display panel, the light-emitting side of the first display panel and the light-emitting side of the second display panel are the same, the second display panel includes a second display area and a second border area, the second border area is at least located on a side of the second display area close to the first display panel, and the second border area at least partially overlaps with the first border area.

[0009] Optionally, in some embodiments of the present application, the horizontal plane where the second display panel is located is above the horizontal plane where the first display panel is located.

[0010] Optionally, in some embodiments of the present application, the spliced display module further includes:

[0011] a first functional layer, provided on the light-emitting side of the first display panel, wherein the thickness of the first functional layer is equal to the step difference between the first display panel and the second display panel;

[0012] The optical film is provided on a side of the first functional layer away from the first display panel and located on a light emitting side of the second display panel.

[0013] Optionally, in some embodiments of the present application, the entire surface of the optical film covers the side of the first functional layer away from the first display panel and the light-emitting side of the second display panel.

[0014] Optionally, in some embodiments of the present application, the first functional layer includes at least a first light-transmitting layer.

[0015] Optionally, in some embodiments of the present application, the spliced display module further includes:

[0016] a first back plate, provided on a side of the first display panel away from the second display panel;

[0017] a second back plate, provided on a side of the second display panel close to the first display panel;

[0018] a second functional layer, provided on a side of the second backplane away from the second display panel, wherein the thickness of the second functional layer is equal to the step difference between the first backplane and the second backplane;

[0019] The cushion layer is provided on a side of the first back plate away from the first display panel and is located on a side of the second functional layer away from the second back plate.

[0020] Optionally, in some embodiments of the present application, the second back plate is provided with a groove, and the second display panel is partially embedded in the groove.

[0021] Optionally, in some embodiments of the present application, the second functional layer includes at least a second light-transmitting layer.

[0022] Optionally, in some embodiments of the present application, the cushion layer entirely covers a side of the first backplane away from the first display panel and a side of the second functional layer away from the second backplane.

[0023] Optionally, in some embodiments of the present application, the spliced display module includes a plurality of the display panels, and among the plurality of the display panels, the first display panel and the second display panel are staggered along the splicing direction;

[0024] The first display area and the second display area are rectangular, the four sides of the first display area are respectively provided with corresponding first frame areas, and a first gap is provided between two adjacent first frame areas in the first display panel;

[0025] The four sides of the second display area are respectively provided with corresponding second frame areas, and a second gap is provided between two adjacent second frame areas in the second display panel;

[0026] The first notch and the second notch overlap.

[0027] An embodiment of the present application further provides an electronic device including the spliced display module described above.

[0028] The embodiment of the present application adopts a spliced display module and an electronic device. By making the first frame area of the first display panel at least partially hidden under the second frame area of the second display panel, the splicing seam of the spliced display module can be reduced, which is beneficial to improving the user's visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 is a schematic cross-sectional view of a spliced display device provided in a comparative embodiment of the present application;

[0031] Figure 2 This is a schematic cross-sectional view of the first spliced display module provided in an embodiment of the present application;

[0032] Figure 3 2 is a schematic cross-sectional view of a second spliced display module provided in an embodiment of the present application;

[0033] Figure 4 1 is a schematic cross-sectional view of a third spliced display module provided in an embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of a first matching method of the first display panel and the second display panel provided in an embodiment of the present application;

[0035] Figure 6 2 is a schematic cross-sectional view of a fourth spliced display module provided in an embodiment of the present application;

[0036] Figure 7This is a schematic diagram of a second matching method of the first display panel and the second display panel provided in an embodiment of the present application;

[0037] Figure 8 1 is a test schematic diagram of a spliced display module of a first sample provided in an embodiment of the present application;

[0038] Figure 9 1 is a test schematic diagram of a spliced display module of a second sample provided in an embodiment of the present application;

[0039] Figure 10 is a schematic diagram of splicing the first display panel and the second display panel provided in an embodiment of the present application;

[0040] Figure 11 This is a schematic diagram of the manufacturing process of the first spliced display module provided in an embodiment of the present application;

[0041] Figure 12 1 is a schematic diagram of the manufacturing process of the second spliced display module provided in an embodiment of the present application;

[0042] Figure 13 It is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0044] See also Figure 1The comparative embodiment of the present application provides a spliced display device, comprising a first display module 1, a second display module 2, and a cover plate 3. The first display module 1 and the second display module 2 are spliced together, and the cover plate 3 covers the first display module 1 and the second display module 2. The first display module 1 comprises a first SCF (Super Clean Foam) component 11, a first support plate 12, a first display panel 13, a first optical film 14, and a first optical adhesive 15 stacked in sequence. The second display module 2 comprises a second SCF component 21, a second support plate 22, a second display panel 23, a second optical film 24, and a second optical adhesive 25 stacked in sequence. The cover plate 3 covers the first optical adhesive 15 and the second optical adhesive 25.

[0045] Specifically, in Figure 1 In the spliced display device shown, both the first display panel 13 and the second display panel 23 are provided with a frame area. The first display panel 13 includes a first display area (not shown) and a first frame area A. The first frame area A includes a first gap area D and a first non-display area J. The first gap area D is provided between the first non-display area J and the first display area. The second display panel 23 includes a second display area (not shown) and a second frame area C. The second frame area C includes a second gap area E and a second non-display area K. The second gap area E is provided between the second non-display area K and the second display area. Due to process deviations, there is a splicing gap B between the first display panel 13 and the second display panel 23. Therefore, the width of the splicing seam L1 of the spliced display device is equal to the sum of the width of the first frame area A, the width of the second frame area C, and the width of the splicing gap B. As can be seen, the width of the splicing seam L1 is greater than the sum of the widths of the first frame area A and the second frame area C. The splicing seam L1 is relatively large, affecting the user's visual experience.

[0046] Specifically, in Figure 1 In the illustrated spliced display device, in order to reduce the seam L1, the optical films need to be retracted, taking into account the impact of the bonding accuracy in the actual manufacturing process. Specifically, the distance F at which the end of the first optical film 14 corresponding to the splicing is retracted inwards causes the encapsulation layer at the end of the first display panel 13 corresponding to the splicing to be exposed, posing a risk of encapsulation failure for the first display panel 13. The distance G at which the end of the second optical film 24 corresponding to the splicing is retracted inwards causes the encapsulation layer at the end of the second display panel 23 corresponding to the splicing to be exposed, posing a risk of encapsulation failure for the second display panel 23. In addition, since the ends of the first optical film 14 corresponding to the splicing are retracted inwards, and the ends of the second optical film 24 corresponding to the splicing are retracted inwards, and the first optical adhesive 15 covers the first optical film 14, and the second optical adhesive 25 covers the second optical film 24, there is air between the first optical adhesive 15 and the second optical adhesive 25. When the cover plate 3 is bonded, bubbles are easily generated here, which increases the difficulty of bonding the cover plate 3.

[0047] Specifically, in Figure 1 In the spliced display device shown, since the first display module 1 and the second display module 2 are in a separated state, the position of the spliced display device corresponding to the splicing seam L1 cannot be effectively supported, and the module strength and flatness at the splicing seam L1 are poor.

[0048] For the sake of Figure 1 To improve the problems existing in the spliced display device shown in FIG, the present application provides a spliced display module 100, a method for manufacturing a spliced display module, and an electronic device. Detailed descriptions are given below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments.

[0049] See also Figure 2 An embodiment of the present application provides a spliced display module 100, comprising at least two display panels spliced together, wherein the adjacent display panels are located on different horizontal planes and partially overlap. The at least two display panels include at least one first display panel 111 and at least one second display panel 112, wherein the second display panel 112 is spliced together with the first display panel 111. In this embodiment, the first display panel 111 and the second display panel 112 may be, but are not limited to, flexible display panels such as OLED (Organic Light-Emitting Diode) display panels and LED (Light-Emitting Diode) display panels. The LED display panels may include Mini LED (Mini Light-Emitting Diode) display panels and Micro LED (Micro Light-Emitting Diode) display panels.

[0050] In the embodiment of the present application, the spliced display module 100 includes a first display panel 111 and a second display panel 112. Of course, the number of the first display panel 111 and the second display panel 112 can be appropriately adjusted according to the actual selection and specific requirements, and is not limited here.

[0051] In another embodiment, the splicing display module 100 includes a plurality of display panels, among which the first display panel 111 and the second display panel 112 are alternately arranged along the splicing direction.

[0052] For example, the spliced display module 100 includes two first display panels 111 and one second display panel 112, and the two first display panels 111 are respectively arranged on opposite sides of the second display panel 112; or, the spliced display module 100 includes one first display panel 111 and two second display panels 112, and the two second display panels 112 are respectively arranged on opposite sides of the first display panel 111.

[0053] For example, the spliced display module 100 includes more than two first display panels 111 and more than two second display panels 112, and the first display panels 111 and the second display panels 112 are arranged in an array. When the first display panels 111 and the second display panels 112 are arranged in a row direction, the first display panels 111 and the second display panels 112 are staggered along the row direction. When the first display panels 111 and the second display panels 112 are arranged in a column direction, the first display panels 111 and the second display panels 112 are staggered along the column direction. When the first display panels 111 and the second display panels 112 are arranged along multiple rows and multiple columns, the first display panels 111 and the second display panels 112 are staggered along the row direction, and the first display panels 111 and the second display panels 112 are staggered along the column direction.

[0054] Specifically, such as Figure 2 As shown, the first display panel 111 includes a first display area AA1 and a first border area BA1, and the first border area BA1 is located on at least one side of the first display area AA1. The second display panel 112 is provided on the light-emitting side of the first display panel 111, and the light-emitting side of the first display panel 111 is the same as the light-emitting side of the second display panel 112. The second display panel 112 includes a second display area AA2 and a second border area BA2, and the second border area BA2 is located on at least one side of the second display area AA2 close to the first display panel 111. In the embodiment of the present application, the first border area BA1 is provided on the peripheral side of the first display area AA1, and the second border area BA2 is provided on the peripheral side of the second display area AA2. Of course, according to the selection and setting of actual conditions, the first border area BA1 can also be provided on one side or at least both sides of the first display area AA1, and the second border area BA2 can also be provided on one side or at least both sides of the second display area AA2. This is not a sole limitation.

[0055] Specifically, such as Figure 2 As shown, the portion of the second display panel 112 corresponding to the second display area AA2 is offset from the portion of the first display panel 111 corresponding to the first display area AA1, and the second border area BA2 at least partially overlaps the first border area BA1. In this structure, by at least partially hiding the first border area BA1 of the first display panel 111 below the second border area BA2 of the second display panel 112, the width of the seam L2 is smaller than the sum of the widths of the first border area BA1 and the second border area BA2. This can reduce the seam L2 of the spliced display module 100, thereby improving the user's visual experience.

[0056] Specifically, such as Figure 2As shown, the horizontal plane where the second display panel 112 is located is located above the horizontal plane where the first display panel 111 is located. In this structure, the first border area BA1 of the first display panel 111 can be hidden below the second border area BA2 of the second display panel 112, so that the width of the seam L2 is smaller than the sum of the widths of the first border area BA1 and the second border area BA2. This can reduce the seam L2 of the spliced display module 100, which is beneficial for improving the user's visual experience.

[0057] Specifically, such as Figure 2 As shown, the area where the second border area BA2 of the second display panel 112 overlaps with the first border area BA1 of the first display panel 111 is defined as the overlapping area OLA. The first border area BA1 includes a first non-display area VA1 and a first spacer area D1, and the first spacer area D1 is located between the first display area AA1 and the first non-display area VA1. The second border area BA2 includes a second non-display area VA2 and a second spacer area D2, and the second spacer area D2 is located between the second display area AA2 and the second non-display area VA2. In the embodiment of the present application, the second non-display area VA2 at the corresponding joint of the second display panel 112 and the first non-display area VA1 at the corresponding joint of the first display panel 111 completely overlap, that is, the overlapping area OLA is the area where the first non-display area VA1 and the second non-display area VA2 overlap. In this structure, the first spacer area D1 and the second spacer area D2 serve as buffer areas to prevent the second non-display area VA2 from overlapping with the first display area AA1 due to process accuracy, thereby avoiding affecting the light output of the first display area AA1. In this embodiment, the width of the seam L2 is equal to the sum of the width of the first spacer area D1, the width of the second spacer area D2 and the width of the overlapping area OLA. The width of the seam L2 is smaller than the sum of the width of the first border area BA1 and the width of the second border area BA2. The seam L2 of the splicing display module 100 can be reduced, which is beneficial to improving the user's visual experience.

[0058] Specifically, such as Figure 2 As shown, the spliced display module 100 further includes a first functional layer 121, which is disposed on the light-emitting side of the first display panel 111 and on the side of the second display panel 112. The first functional layer 121 is used to compensate for the step difference between the light-emitting side of the first display panel 111 and the light-emitting side of the second display panel 112. In the embodiment of the present application, the thickness of the first functional layer 121 is equal to the step difference between the first display panel 111 and the second display panel 112, and the surface of the first functional layer 121 away from the first display panel 111 can be flush with the light-emitting side of the second display panel 112.

[0059] Specifically, the first functional layer 121 may include a first light-transmitting layer 1212 . Of course, the first functional layer 121 may also include other layer structures according to actual selection and specific requirements, which is not limited here.

[0060] Specifically, such as Figure 2 As shown, the spliced display module 100 further includes a first backplane 131, a second backplane 132, and a second functional layer 122. The first backplane 131 is disposed on a side of the first display panel 111 away from the second display panel 112. The second backplane 132 is disposed on a side of the second display panel 112 closer to the first display panel 111. The second backplane 132 is configured to correspond to at least the second display area AA2, the second spacing area D2, and the overlapping area OLA of the second display panel 112. The second functional layer 122 is disposed on a side of the second backplane 132 away from the second display panel 112. The second functional layer 122 is configured to compensate for the step difference between the side of the first backplane 131 away from the first display panel 111 and the side of the second backplane 132 away from the second display panel 112. In an embodiment of the present application, the thickness of the second functional layer 122 is equal to the step difference between the first backplane 131 and the second backplane 132 , and the surface of the second functional layer 122 away from the second display panel 112 can be flush with the surface of the first backplane 131 away from the first display panel 111 .

[0061] Specifically, the second functional layer 122 may include a second light-transmitting layer 1222 . Of course, the second functional layer 122 may also include other layer structures according to actual selection and specific requirements, which is not limited here.

[0062] Specifically, such as Figure 3 As shown, the spliced display module 100 also includes an optical film 140. The optical film 140 is provided on the side of the first functional layer 121 away from the first display panel 111 and on the light-emitting side of the second display panel 112. The first functional layer 121 is provided between the first display panel 111 and the optical film 140. Under this structure, the optical film 140 can optically adjust the light emitted by the first display panel 111 and the second display panel 112, so that the light emitted by the first display panel 111 and the second display panel 112 meets the display requirements. In this embodiment, the optical film 140 covers the entire surface of the light-emitting side of the second display panel 112 and the side of the first functional layer 121 away from the first display panel 111. There is no step difference between the optical film 140 on the second display panel 112 and the optical film 140 on the first functional layer 121, which can avoid display differences caused by the phase difference between the optical film 140 on the second display panel 112 and the optical film 140 on the first functional layer 121.

[0063] Specifically, such as Figure 3As shown, the spliced display module 100 further includes a cover plate 160 and an optical adhesive 150. The cover plate 160 covers the optical film 140, and the optical adhesive 150 is provided between the cover plate 160 and the optical film 140. The cover plate 160 is fixed to the optical film 140 by the optical adhesive 150. In this structure, the cover plate 160 can be used to protect the spliced display module 100, which is beneficial to improving the reliability of the spliced display module 100. In this embodiment, since the entire surface of the optical film 140 covers the second display panel 112 and the first functional layer 121, the optical adhesive 150 can also cover the entire surface of the optical film 140. When the cover plate 160 is attached, it is not easy to generate bubbles, which effectively reduces the difficulty of attaching the cover plate 160.

[0064] Specifically, such as Figure 3 As shown, the spliced display module 100 also includes a cushioning layer 170, which is provided on the side of the first backplane 131 away from the first display panel 111 and on the side of the second functional layer 122 away from the second backplane 132. In this structure, the cushioning layer 170 can provide both cushioning and protection. In this embodiment, the cushioning layer 170 can fully cover the side of the second functional layer 122 away from the second backplane 132 and the side of the first backplane 131 away from the first display panel 111. The position of the spliced display module 100 corresponding to the seam L2 can be effectively supported, and the module has high strength and good flatness.

[0065] Specifically, the cushion layer 170 may be an SCF (Super Clean Foam) component. The SCF component mainly includes a foam layer and a metal layer. The foam layer is provided between the metal layer and the corresponding display panel. The metal layer may be, but is not limited to, a copper layer.

[0066] Specifically, the SCF assembly further includes a polyimide layer, which is disposed between the foam layer and the metal layer.

[0067] Specifically, the SCF assembly further includes a graphite layer, and the graphite layer is disposed between the polyimide layer and the metal layer.

[0068] In the embodiment of the present application, the cover plate 160 and the cushion layer 170 are both provided to cover the entire surface. The cover plate 160 and the cushion layer 170 only require one design and bonding process, and the module design and manufacturing costs are low.

[0069] In the embodiments of this application, Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the second back plate 132 is provided with a groove 1321, and the second display panel 112 is partially embedded in the groove 1321. Such a configuration is conducive to reducing the thickness of the first functional layer 121 and the second functional layer 122, thereby realizing a lightweight design of the module; on the other hand, the groove 1321 can play a role in alignment to facilitate assembly and effectively improve the production efficiency of the module.

[0070] In some embodiments, as Figure 4 and Figure 5 As shown, the second backplane 132 is located on the light-emitting side of the first display panel 111. A groove 1321 is defined on the side of the second backplane 132 away from the second display panel 112. The end of the first display panel 111 closer to the second display panel 112 is positioned within the groove 1321. This structure not only helps reduce the thickness of the first and second functional layers 121 and 122, thereby achieving a thinner and lighter module design, but also facilitates alignment during assembly, effectively improving module production efficiency.

[0071] exist Figure 4 and Figure 5 In the illustrated embodiment, the depth of the groove 1321 is less than the total thickness of the first display panel 111 and the first back plate 131 , so that the first display panel 111 is at least partially embedded in the groove 1321 , facilitating a lightweight and thin design of the module.

[0072] Specifically, such as Figure 4 and Figure 5 As shown, the depth of the groove 1321 is greater than the thickness of the first display panel 111. With this arrangement, the first back panel 131 will be partially embedded in the groove 1321, so that the side walls of the groove 1321 limit the first back panel 131. By making the side surfaces of the corresponding joints of the first back panel 131 abut against the side walls of the groove 1321, the first display panel 111 and the second display panel 112 can be aligned.

[0073] In other embodiments, Figure 6 and Figure 7 As shown, the second back plate 132 is located on the side of the first display panel 111. A groove 1321 is defined on the side of the second back plate 132 that is closest to the first display panel 111. The end of the first display panel 111 that is closest to the second display panel 112 is positioned within the groove 1321. This structure not only helps reduce the thickness of the first functional layer 121 and the second functional layer 122, thereby achieving a thinner and lighter module design, but also facilitates alignment during assembly, effectively improving module production efficiency.

[0074] exist Figure 6 and Figure 7In the illustrated embodiment, the first back panel 131 includes a first connecting segment 1311 and a second connecting segment 1312, the first connecting segment 1311 is connected to the second connecting segment 1312, the first connecting segment 1311 is arranged corresponding to the overlapping area, the first connecting segment 1311 is arranged in the groove 1321, and the width of the groove 1321 along the direction perpendicular to the first back panel 131 is greater than or equal to the total thickness of the first connecting segment 1311 and the first display panel 111, so that one end of the first connecting segment 1311 and the first display panel 111 can be inserted into the groove 1321.

[0075] like Figure 6 and Figure 7 As shown, when the first display panel 111 is inserted into the groove 1321 , the side surface of the first back plate 131 abuts against the first back plate 131 , thereby achieving alignment, facilitating assembly and effectively improving the production efficiency of the module.

[0076] In all embodiments of the present application, there is a first distance RA1 between the edge of the first functional layer 121 near the splicing point and the first display area AA1. If the edge of the first functional layer 121 near the splicing point just abuts the edge of the second back plate 132 (or the second display panel 112) near the splicing point, the first distance RA1 is equal to the width of the first spacer area D1; and due to process deviation, there is a gap between the edge of the first functional layer 121 near the splicing point and the edge of the second back plate 132 (or the first display panel 112) near the splicing point, then the first distance RA1 will be smaller than the width of the first spacer area D1. There is a second distance RA2 between the edge of the second functional layer 122 near the splicing point and the second display area AA2. If the edge of the second functional layer 122 near the splicing point just abuts the edge of the first back plate 131 near the splicing point, the second distance RA2 is equal to the width of the second spacer area D2; and due to process deviation, there is a gap between the edge of the second functional layer 122 near the splicing point and the edge of the first back plate 131 near the splicing point, then the second distance RA2 will be smaller than the width of the second spacer area D2.

[0077] Generally speaking, the splicing accuracy is 0.3 mm. If the width of the border area of the first display panel 111 and the second display panel 112 is 1 mm, then Figure 1 The width of the seam L1 of the spliced display device shown is 2.3±0.3 mm, while the width of the seam L2 of the spliced display module 100 of the present application is 1.3±0.3 mm. Figure 1According to the solution of the present application, the width of the seam L2 can be reduced by 43.5%, the seam L2 can be effectively supported and protected, the module strength and reliability performance at the seam L2 are improved, the bonding process is simple, the optical film 140, the cover plate 160 and the cushion layer 170 only need to be designed and bonded once, reducing the design and manufacturing cost of the large-size splicing display module 100 and improving the display effect of the large-size screen.

[0078] like Figure 8 and Figure 9 As shown, the present application tests the width of the seam L2 of the spliced display module 100. Taking the width of the first frame area BA1 and the second frame area BA2 as 0.95 mm and the splicing accuracy as 0.3 mm as an example, the width of the seam L2 should be 1.25±0.3 mm. Figure 8 As shown, a first test point M and a second test point N are selected in the splicing display module 100 of the first sample, wherein the size of the splicing seam L2 of the first test point M is 1.25 mm, and the size of the splicing seam L2 of the second test point N is 1.17 mm. It can be seen that the width of the splicing seam L2 of the splicing display module 100 of the first sample meets the requirements. Figure 9 As shown, the third test point O and the fourth test point P are selected in the splicing display module 100 of the second sample, wherein the size of the splicing seam L2 of the third test point O is 1.15 mm, and the size of the splicing seam L2 of the fourth test point P is 0.99 mm. It can be seen that the width of the splicing seam L2 of the splicing display module 100 of the second sample meets the requirements.

[0079] Specifically, such as Figure 10 As shown, the first display area AA1 and the second display area AA2 are rectangular. The four sides of the first display area AA1 are each provided with a corresponding first border area BA1. A first notch Q1 is provided between two adjacent first border areas BA1 in the first display panel 111. The four sides of the second display area AA2 are each provided with a corresponding second border area BA2. A second notch Q2 is provided between two adjacent second border areas BA2 in the second display panel 112. The first notch Q1 and the second notch Q2 overlap. In this structure, by providing the first notch Q1 and the second notch Q2 on the first display panel 111 and the second display panel 112, respectively, when multiple first display panels 111 and multiple second display panels 112 are spliced together, the corners of the first display panels 111 and the second display panels 112 do not overlap, thereby preventing an increase in thickness. In this embodiment, the cross-sectional areas of the first notch Q1 and the second notch Q2 are equal.

[0080] See Figure 11 The present invention also provides a method for manufacturing a spliced display module, comprising the following steps:

[0081] Step B10: disposing the optical film 140 on one side of the cover plate 160;

[0082] Step B20: Disposing a second display panel 112 on a side of the optical film 140 away from the cover plate 160. The optical film 140 is located on the light-emitting side of the second display panel 112. The second display panel 112 includes a second display area AA2 and a second frame area BA2. The second frame area BA2 is located on at least one side of the second display area AA2.

[0083] Step B30: disposing a first functional layer 121 on a side of the optical film 140 away from the cover plate 160 , wherein the first functional layer 121 is located on a side of the second display panel 112 ;

[0084] Step B40: Disposing the first display panel 111 on a side of the second display panel 112 and the first functional layer 121 away from the optical film 140, such that the first display panel 111 and the second display panel 112 are spliced together, and the first functional layer 121 is located on the light-emitting side of the second display panel 112; the first display panel 111 includes a first display area AA1 and a first border area BA1, the first border area BA1 is located on at least one side of the first display area AA1, and a portion of the second display panel 112 corresponding to the second display area AA2 is staggered from a portion of the first display panel 111 corresponding to the first display area AA1, and a portion of the second border area BA2 of the second display panel 112 corresponding to the spliced portion at least partially overlaps with a portion of the first border area BA1 of the first display panel 111 corresponding to the spliced portion at the first display panel 111;

[0085] Step B50: disposing a second functional layer 122 on a side of the second display panel 112 close to the first display panel 111;

[0086] Step B60 : disposing a cushion layer 170 on the second functional layer 122 and the side of the first display panel 111 away from the second display panel 112 .

[0087] Specifically, in step B20, the second display panel 112 is formed on the second backplane 132. That is, the second backplane 132 is provided on the side of the second display panel 112 away from the light-emitting side. After step B20, the second backplane 132 is provided on the side of the second display panel 112 away from the optical film 140. Subsequently, in step B50, the second functional layer 122 is provided on the side of the second backplane 132 away from the second display panel 112.

[0088] Specifically, in step B40, the first display panel 111 is formed on the first backplane 131, that is, the first backplane 131 is provided on the side of the first display panel 111 away from the light-emitting side. Then, after step B40, the first backplane 131 is provided on the side of the first display panel 111 away from the first functional layer 121 and the first display panel 111. Subsequently, in step B50, the first functional layer 121 is provided on the side of the first backplane 131 away from the first display panel 111.

[0089] See Figure 12 The present application also provides another method for manufacturing a spliced display module, comprising the following steps:

[0090] Step B11: splicing the first display panel 111 and the second display panel 112, wherein the first display panel 111 includes a first display area AA1 and a first border area BA1, the first border area BA1 being located on at least one side of the first display area AA1, the second display panel 112 being provided on the light-exiting side of the first display panel 111, the light-exiting side of the first display panel 111 being the same as the light-exiting side of the second display panel 112, the second display panel 112 including a second display area AA2 and a second border area BA2, the second border area BA2 being located on at least one side of a splicing portion corresponding to the second display area AA2, a portion of the second display panel 112 corresponding to the second display area AA2 being staggered from a portion of the first display panel 111 corresponding to the first display area AA1, and a portion of the second border area BA2 of the second display panel 112 corresponding to the splicing portion at least partially overlaps with a portion of the first border area BA1 of the first display panel 111 corresponding to the splicing portion;

[0091] Step B21: disposing a first functional layer 121 on the light-emitting side of the first display panel 111 and a second functional layer 122 on a side of the second display panel 112 close to the first display panel 111 , with the first functional layer 121 being located on a side of the second display panel 112 ;

[0092] Step B31: disposing an optical film 140 on a side of the second display panel 112 and the first functional layer 121 away from the first display panel 111 ;

[0093] Step B41: disposing a cover plate 160 on a side of the optical film 140 away from the second display panel 112;

[0094] Step B51 : disposing a cushion layer 170 on a side of the second functional layer 122 and the first display panel 111 away from the second display panel 112 .

[0095] Specifically, in step B11, the first display panel 111 is formed on the first backplane 131, that is, the first backplane 131 is provided on the side of the first display panel 111 away from the light-emitting side; the second display panel 112 is formed on the second backplane 132, that is, the second backplane 132 is provided on the side of the second display panel 112 away from the light-emitting side. Then, after step B11, the first backplane 131 is provided on the side of the first display panel 111 away from the second display panel 112, and the second backplane 132 is provided on the side of the second display panel 112 closer to the first display panel 111. The second backplane 132 is at least partially located between the first display panel 111 and the second display panel 112. Subsequently, in step B21, the second functional layer 122 is formed on the side of the second backplane 132 away from the second display panel 112.

[0096] See also Figure 13 , an embodiment of the present application further provides an electronic device, comprising the spliced display module 100 described above. The electronic device can be a mobile terminal, such as an in-vehicle display, a smart phone, a tablet computer, a laptop computer, etc., or a wearable terminal, such as a smart watch, a smart bracelet, smart glasses, an augmented reality device, etc., or a fixed terminal, such as a desktop computer, a television, etc. In this embodiment, the electronic device further comprises a terminal body 200, which is a housing, and the spliced display module 100 is fixed to the terminal body 200.

[0097] The above is a detailed introduction to a spliced display module and an electronic device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A spliced display module, comprising at least two display panels spliced together, wherein two adjacent display panels are located on different horizontal planes and partially overlap, characterized in that: The at least two display panels include: at least one first display panel, comprising a first display area and a first frame area, wherein the first frame area is located on at least one side of the first display area; and At least one second display panel spliced with the first display panel, the second display panel being located on a horizontal plane above the first display panel, the second display panel being provided on a light-emitting side of the first display panel, the light-emitting side of the first display panel and the light-emitting side of the second display panel being the same, the second display panel including a second display area and a second border area, the second border area being located at least on a side of the second display area proximal to the first display panel, and the second border area at least partially overlapping the first border area; The splicing display module also includes: a first back plate, provided on a side of the first display panel away from the second display panel; a second back plate, provided on a side of the second display panel close to the first display panel; The second back plate is located on the light-emitting side of the first display panel. A groove is provided on a side of the second back plate away from the second display panel. An end of the first display panel close to the second display panel is provided in the groove.

2. The splicing display module according to claim 1, wherein: The splicing display module also includes: a first functional layer, provided on the light-emitting side of the first display panel, wherein the thickness of the first functional layer is equal to the step difference between the first display panel and the second display panel; The optical film is provided on a side of the first functional layer away from the first display panel and located on a light emitting side of the second display panel.

3. The splicing display module according to claim 2, wherein: The optical film entirely covers a side of the first functional layer away from the first display panel and a light-emitting side of the second display panel.

4. The splicing display module according to claim 2, wherein: The first functional layer at least includes a first light-transmitting layer.

5. The splicing display module according to claim 1, wherein: The splicing display module also includes: a second functional layer, provided on a side of the second backplane away from the second display panel, wherein the thickness of the second functional layer is equal to the step difference between the first backplane and the second backplane; The cushion layer is provided on a side of the first back plate away from the first display panel and is located on a side of the second functional layer away from the second back plate.

6. The splicing display module according to claim 5, wherein: The depth of the groove is greater than the thickness of the first display panel.

7. The splicing display module according to claim 5, wherein: The second functional layer at least includes a second light-transmitting layer.

8. The splicing display module according to claim 5, wherein: The cushion layer entirely covers a side of the first back plate away from the first display panel and a side of the second functional layer away from the second back plate.

9. The splicing display module according to claim 1, wherein: The splicing display module includes a plurality of display panels, wherein the first display panel and the second display panel are staggered along a splicing direction; The first display area and the second display area are rectangular, the four sides of the first display area are respectively provided with corresponding first frame areas, and a first gap is provided between two adjacent first frame areas in the first display panel; The four sides of the second display area are respectively provided with corresponding second frame areas, and a second gap is provided between two adjacent second frame areas in the second display panel; The first notch and the second notch overlap.

10. An electronic device, characterized in that: It comprises the splicing display module according to any one of claims 1 to 9.

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