splicing display device

Abstract

This application discloses a splicing display device, including a first sub-display device and a second sub-display device, which are spliced ​​together with the first sub-display device. The first sub-display device includes a first substrate, and the second sub-display device includes a second substrate. The first substrate has a first connecting surface near the splicing seam, and the second substrate has a second connecting surface near the splicing seam. The second connecting surface has an opposite structure to the first connecting surface, and a plurality of first light-emitting diodes are disposed on either the first or second connecting surface. This configuration enables light emission at the splicing seam, avoiding visually noticeable display defects during splicing.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a splicing display device. Background Technology

[0002] With the increasing demand for large-screen displays, various video wall display devices have emerged. Currently, video wall display devices can use multiple sub-display devices to be spliced ​​together to form a large-screen display.

[0003] Micro LEDs are widely used in the display technology field due to their advantages such as high brightness, good luminous efficiency, and low power consumption. Currently, gaps at the splicing points are unavoidable during Micro LED splicing, and are typically mitigated by filling these gaps with materials. However, as PPI (Pixels Per Inch) increases, the absence of light-emitting diodes at the splicing points leads to noticeable visual defects in the display. Summary of the Invention

[0004] The splicing display device provided in this application solves the technical problem in the prior art where gaps at the splicing points cause obvious visual defects in the display device.

[0005] To solve the above-mentioned technical problems, the first technical solution provided in this application is: to provide a splicing display device, including a first sub-display device and a second sub-display device; the first sub-display device includes a first substrate; the second sub-display device is spliced ​​with the first sub-display device; the second sub-display device includes a second substrate; wherein, the first substrate has a first connecting surface near the splicing seam; the second substrate has a second connecting surface near the splicing seam; the second connecting surface has an opposite structure to the first connecting surface; and a plurality of first light-emitting diodes are provided on the first connecting surface and / or the second connecting surface.

[0006] The first substrate includes a first surface and a second surface that are arranged opposite to and parallel to each other; the angle formed between the first connecting surface and the first surface is greater than 90 degrees and less than 180 degrees; and a plurality of second light-emitting diodes are disposed on the first surface.

[0007] The second substrate includes a third surface and a fourth surface that are arranged opposite to and parallel to each other; the angle formed between the second connecting surface and the third surface is less than or equal to 90 degrees and greater than 0 degrees; a plurality of third light-emitting diodes are disposed on the third surface;

[0008] Multiple first light-emitting diodes are disposed on the first connection surface;

[0009] Preferably, the plurality of the first light-emitting diodes are disposed only on the first connection surface.

[0010] The first substrate includes a first surface and a second surface that are arranged opposite to and parallel to each other; the angle formed between the first connecting surface and the first surface is greater than 90 degrees and less than 180 degrees; and a plurality of second light-emitting diodes are disposed on the first surface.

[0011] The second substrate includes a third surface and a fourth surface that are arranged opposite to and parallel to each other; the angle formed between the second connecting surface and the third surface is less than or equal to 90 degrees and greater than 0 degrees; a plurality of third light-emitting diodes are disposed on the third surface;

[0012] A plurality of first light-emitting diodes are disposed on the second connection surface, and a reflective layer is provided on the first connection surface for reflecting the light emitted by the plurality of first light-emitting diodes to the same direction as the light emission direction of the second light-emitting diodes and the third light-emitting diodes;

[0013] Preferably, the plurality of the first light-emitting diodes are disposed only on the second connection surface, and the reflective layer is provided only on the first connection surface.

[0014] Wherein, the angle formed between the first connecting surface and the first surface is 110 degrees to 150 degrees; the angle formed between the second connecting surface and the third surface is 30 degrees to 70 degrees.

[0015] The thickness of the first substrate and the second substrate is 0.45 mm to 0.55 mm, the angle between the first connecting surface and the first surface is 135 degrees, and the angle between the second connecting surface and the third surface is 45 degrees.

[0016] Alternatively, the thickness of the first substrate and the second substrate is less than 0.45 mm, the angle between the first connecting surface and the first surface is less than 135 degrees, and the angle between the second connecting surface and the third surface is greater than 45 degrees.

[0017] Alternatively, the thickness of the first substrate and the second substrate is greater than 0.55 mm, the angle between the first connecting surface and the first surface is greater than 135 degrees, and the angle between the second connecting surface and the third surface is less than 45 degrees.

[0018] Wherein, the first surface and the third surface are both planar and located on the same plane, the projection of the first connecting surface on the same plane where the first surface and the third surface are located at least partially overlaps with the projection of the second connecting surface on the same plane where the first surface and the third surface are located; the projections of the plurality of first light-emitting diodes on the same plane where the first surface and the third surface are located cover the gap between the first surface and the third surface;

[0019] Preferably, a plurality of the first light-emitting diodes are evenly distributed on the entire first connecting surface.

[0020] Wherein, the first surface and the third surface are both planar and located in the same plane, the projection of the first connecting surface onto the same plane where the first surface and the third surface are located overlaps at least partially with the projection of the second connecting surface onto the same plane where the first surface and the third surface are located; the reflective layer reflects the light emitted by the plurality of first light-emitting diodes and covers the gap between the first surface and the third surface;

[0021] Preferably, a plurality of the first light-emitting diodes are evenly distributed on the entire second connecting surface; and the reflective layer is disposed on the entire first connecting surface.

[0022] The first substrate includes a first surface and a second surface that are arranged opposite to and parallel to each other; the angle between the first connecting surface and the first surface is 90 degrees; and a plurality of second light-emitting diodes are disposed on the first surface.

[0023] The second substrate includes a third surface and a fourth surface that are arranged opposite to and parallel to each other; the angle between the second connecting surface and the third surface is 90 degrees; a plurality of third light-emitting diodes are disposed on the third surface;

[0024] A plurality of the first light-emitting diodes are disposed on the first connection surface and / or the second connection surface; or, one of the first connection surface and the second connection surface is provided with a plurality of the first light-emitting diodes, and the other is provided with a reflective layer.

[0025] Both the first substrate and the second substrate are glass; the splicing accuracy of the splicing display device is 0.1mm to 0.4mm.

[0026] The first sub-display device further includes a first circuit layer; one end of the first circuit layer is disposed on the first surface, and the other end extends along the first connection surface to the second surface;

[0027] The second sub-display device further includes a second circuit layer; one end of the second circuit layer is disposed on the third surface, and the other end extends along the second connection surface to the fourth surface;

[0028] Multiple first light-emitting diodes are disposed on the first line layer or the second line layer and are electrically connected to the first line layer or the second line layer.

[0029] The beneficial effects of this application are as follows: Unlike existing technologies, this application discloses a splicing display device, including a first sub-display device and a second sub-display device, which are spliced ​​together with the first sub-display device. The first sub-display device includes a first substrate, and the second sub-display device includes a second substrate. The first substrate has a first connecting surface near the splicing seam, and the second substrate has a second connecting surface near the splicing seam. The second connecting surface has an opposite structure to the first connecting surface. Multiple first light-emitting diodes are disposed on either the first or second connecting surface. By providing a first connecting surface on the first sub-display device and a second connecting surface on the second sub-display device, the splicing seam formed between the first and second sub-display devices is non-perpendicular. Simultaneously, the multiple first light-emitting diodes disposed on the first or second connecting surface forming the splicing seam cause light to be emitted at the splicing seam, avoiding visually obvious display defects during splicing. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a splicing display device in the prior art;

[0032] Figure 2 This is a schematic diagram of the structure of a splicing display device provided in an embodiment of this application;

[0033] Figure 3 yes Figure 2 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device;

[0034] Figure 4 yes Figure 2 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device;

[0035] Figure 5 This is a schematic diagram of the structure of a splicing display device provided in another embodiment of this application;

[0036] Figure 6 yes Figure 5 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device;

[0037] Figure 7 yes Figure 5 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0040] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indications also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0041] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0042] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Please see Figure 1 , Figure 1 This is a structural diagram of a splicing display device in the existing technology.

[0044] In the prior art, a splicing display device is composed of multiple sub-display devices spliced ​​together, wherein "multiple" means two or more. For example, the splicing display device includes a first sub-display device 11 and a second sub-display device 12. The first sub-display device 11 includes a first substrate 111, which is made of glass; the first substrate 111 includes a first surface (not shown) and a second surface (not shown) that are opposite and parallel to each other, and the first substrate 111 is cuboid. Multiple first light-emitting diodes 112 are disposed on the first surface of the first substrate 111. The second sub-display device 12 includes a second substrate 121, which is made of glass; the second substrate 121 includes a third surface (not shown) and a fourth surface (not shown) that are opposite and parallel to each other, and the second substrate 121 is cuboid. Multiple second light-emitting diodes 122 are disposed on the third surface of the second substrate 121. The light emission directions of the first light-emitting diodes 112 and the second light-emitting diodes 122 are the same.

[0045] like Figure 1 As shown, the side of the first substrate 111 of the first sub-display device 11 used for splicing with the second substrate 121 of the second sub-display device 12 is a plane perpendicular to the first surface. The side of the second substrate 121 of the second sub-display device 12 used for splicing with the first substrate 111 of the first sub-display device 11 is a plane perpendicular to the third surface. After the first sub-display device 11 and the second sub-display device 12 are spliced, a splicing seam is formed parallel to the light emission direction of the first light-emitting diode 112 and the second light-emitting diode 122. Due to the limitations of existing glass manufacturing processes, the splicing seam between the first sub-display device 11 and the second sub-display device 12 is unavoidable, and the splicing seam is approximately 0.25 mm.

[0046] For the treatment of splicing seams, materials are usually filled into the seams. However, as PPI increases, filling the seams with materials does not reduce the impact of the seams on the display effect; the absence of light-emitting diodes at the splicing points results in a very obvious display defect, forming a splicing mura (a color difference that is perceptible to the naked eye on the display device).

[0047] In view of this, this application provides a splicing display device to solve the above-mentioned problems. Specifically, please refer to... Figure 2 , Figure 2 This is a schematic diagram of the structure of a splicing display device provided in an embodiment of this application.

[0048] The splicing display device includes a first sub-display device 21 and a second sub-display device 22, which are spliced ​​together, forming a splicing seam 20 between them. The first sub-display device 21 includes a first substrate 211; the second sub-display device 22 includes a second substrate 221. The first substrate 211 has a first connecting surface 2111 near the splicing seam 20; that is, the surface of the first substrate 211 used for splicing with the second substrate 221 is the first connecting surface 2111. The second substrate 221 has a second connecting surface 2211 near the splicing seam 20; that is, the surface of the second substrate 221 used for splicing with the first substrate 211 is the second connecting surface 2211. The first connecting surface 2111 and the second connecting surface 2211 have opposite structures to achieve splicing between the first sub-display device 21 and the second sub-display device 22. In this embodiment, light is emitted at the splice seam 20 by providing a plurality of first light-emitting diodes A on the first connecting surface 2111. It is understood that a plurality of first light-emitting diodes A can be provided on both the first connecting surface 2111 and the second connecting surface 2211, or a plurality of first light-emitting diodes A can be provided only on the first connecting surface 2111. Preferably, providing a plurality of first light-emitting diodes A only on the first connecting surface 2111 simplifies the process and reduces costs.

[0049] Specifically, the first substrate 211 includes a first surface a and a second surface b arranged opposite to and parallel to each other. The first surface a is provided with a connection circuit layer (not shown) and a plurality of second light-emitting diodes B. The angle α formed between the first connection surface 2111 and the first surface a is greater than or equal to 90 degrees and less than 180 degrees. The second substrate 221 includes a third surface c and a fourth surface d arranged opposite to and parallel to each other. The third surface c is provided with a connection circuit layer (not shown) and a plurality of third light-emitting diodes N. The angle β formed between the second connection surface 2211 and the third surface c is less than or equal to 90 degrees and greater than 0 degrees. The light emission directions of the second light-emitting diodes B and the third light-emitting diodes N are the same.

[0050] In this embodiment, the opposite structure of the first connecting surface 2111 and the second connecting surface 2211 means that the included angle α between the first connecting surface 2111 and the first surface a is greater than or equal to 90 degrees and less than 180 degrees, while the included angle β between the second connecting surface 2211 and the third surface c is less than or equal to 90 degrees and greater than 0 degrees. The first connecting surface 2111 and the second connecting surface 2211 are parallel to each other or form an acute angle. When the first connecting surface 2111 and the second connecting surface 2211 form an acute angle, the included angle is less than 30 degrees, preferably less than 15 degrees. In this embodiment, after the first substrate 211 and the second substrate 221 are spliced, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are basically located in the same plane; the sum of the included angles α and β is 180 degrees, that is, the first connecting surface 2111 and the second connecting surface 2211 are parallel to each other.

[0051] It is understood that this application sets the first connecting surface 2111 and the second connecting surface 2211 to opposite structures. Compared to setting the first connecting surface 2111 and the second connecting surface 2211 to the same structure, this is beneficial to reducing the width of the splice seam 20. Specifically, setting the first connecting surface 2111 and the second connecting surface 2211 to the same structure means that the included angle α formed between the first connecting surface 2111 and the first surface a is the same as the included angle β formed between the second connecting surface 2211 and the third surface c, for example, both being greater than 90 degrees or both being less than 90 degrees.

[0052] In one implementation, such as Figure 2 As shown, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are both planes and located in the same plane. The included angle α between the first connecting surface 2111 and the first surface a is greater than 90 degrees and less than 180 degrees, while the included angle β between the second connecting surface 2211 and the third surface c is less than 90 degrees and greater than 0 degrees. That is, both the first connecting surface 2111 and the second connecting surface 2211 are inclined surfaces, the included angle α between the first connecting surface 2111 and the first surface a is an obtuse angle, and the included angle β between the second connecting surface 2211 and the third surface c is an acute angle. The projection of the first connecting surface 2111 onto the same plane containing the first surface a and the third surface c at least partially overlaps with the projection of the second connecting surface 2211 onto the same plane containing the first surface a and the third surface c. The projections of multiple first light-emitting diodes A onto the same plane containing the first surface a and the third surface c cover the gap M between the first surface a and the third surface c, so that the first light-emitting diodes A emit light at the splicing point, avoiding the phenomenon of display defects. Preferably, a plurality of first light-emitting diodes A are evenly distributed on the entire first connecting surface 2111.

[0053] The included angle α between the first connecting surface 2111 and the first surface a is 110 to 150 degrees; the included angle β between the second connecting surface 2211 and the third surface c is 30 to 70 degrees. Preferably, the included angle α between the first connecting surface 2111 and the first surface a is 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is 45 degrees, which facilitates processing and splicing.

[0054] The included angle α between the first connecting surface 2111 and the first surface a is limited by the thickness of the first substrate 211 and the cutting process; the thicker the first substrate 211, the larger the included angle α between the first connecting surface 2111 and the first surface a. The included angle β between the second connecting surface 2211 and the third surface c is also limited by the thickness of the first substrate 211 and the cutting process; the thicker the second substrate 221, the smaller the included angle β between the second connecting surface 2211 and the third surface c. When the thickness of the first substrate 211 and the second substrate 221 is 0.45 mm to 0.55 mm, the included angle α between the first connecting surface 2111 and the first surface a is 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is 45 degrees; when the thickness of the first substrate 211 and the second substrate 221 is less than 0.45 mm, the included angle α between the first connecting surface 2111 and the first surface a is less than 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is greater than 45 degrees; when the thickness of the first substrate 211 and the second substrate 221 is greater than 0.55 mm, the included angle α between the first connecting surface 2111 and the first surface a is greater than 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is less than 45 degrees.

[0055] Please see Figure 3 , Figure 3 yes Figure 2 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device.

[0056] In another embodiment, such as Figure 3As shown, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are both planar and located on the same plane. The angle α formed between the first connecting surface 2111 and the first surface a is 90 degrees, and the angle β formed between the second connecting surface 2211 and the third surface c is 90 degrees. By providing multiple first light-emitting diodes A on the first connecting surface 2111 and / or the second connecting surface 2211, light is emitted at the splicing seam 20. It can be understood that since the first connecting surface 2111 and / or the second connecting surface 2211 is perpendicular to the same plane where the first surface a and the third surface c are located, the multiple first light-emitting diodes A can emit light from the side, so that the emitted light is directed towards the same plane where the first surface a and the third surface c are located. In this embodiment, the first light-emitting diodes A can make the splicing seam 20 emit light. Although when the user looks directly at the splicing seam 20 from a direction perpendicular to the display panel, there may be a problem that the emitted light cannot completely cover the gap M between the first surface a and the third surface c, compared with the absence of first light-emitting diodes A, it avoids visual display defects to a certain extent. In addition, when users look at the splicing seam at an angle along a direction not perpendicular to the display panel, visual display defects can be effectively avoided.

[0057] Please see Figure 4 , Figure 4 yes Figure 2 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device.

[0058] In yet another implementation, such as Figure 4 As shown, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are both planar and located on the same plane. The included angle α between the first connecting surface 2111 and the first surface a is greater than 90 degrees and less than 180 degrees, while the included angle β between the second connecting surface 2211 and the third surface c is 90 degrees. By providing multiple first light-emitting diodes A on the first connecting surface 2111, the projection of the multiple first light-emitting diodes A onto the same plane containing the first surface a and the third surface c covers the gap M between the first surface a and the third surface c, ensuring that light is present at the splicing seam 20 and avoiding display defects. Preferably, multiple first light-emitting diodes A are evenly distributed across the entire first connecting surface 2111.

[0059] In this embodiment, the splicing accuracy of the splicing display device is 0.1mm to 0.4mm. Here, splicing accuracy refers to the distance between the first connecting surface 2111 and the second connecting surface 2211; when the first connecting surface 2111 and the second connecting surface 2211 are parallel, the splicing accuracy is the vertical distance between them; when they are not parallel, the splicing accuracy is the shortest distance between any point on the first connecting surface 2111 and the second connecting surface 2211. At this splicing accuracy, the angle α formed between the first connecting surface 2111 and the first surface a, the angle β formed between the second connecting surface 2211 and the third surface c, and the multiple first light-emitting diodes A are configured as described above, ensuring that there is light or display pixels at the splicing seam 20, thereby avoiding visually obvious display defects.

[0060] It is understandable that when the splicing accuracy of the display device is less than 0.1mm or greater than 0.4mm, display defects can still be avoided by setting a first connecting surface 2111 and a second connecting surface 2211, and setting multiple first light-emitting diodes A on the first connecting surface 2111. When the splicing accuracy is less than 0.1mm, it is not advisable to set multiple first light-emitting diodes A on the first connecting surface 2111, which increases the installation difficulty. When the splicing accuracy is greater than 0.4mm, since the thickness of the first substrate 211 or the second substrate 221 is usually thin, in order to avoid no light at the splicing seam 20, the included angle α formed between the first connecting surface 2111 and the first surface a needs to be made larger, and the included angle β formed between the second connecting surface 2211 and the third surface c needs to be made smaller, which increases the processing difficulty. Moreover, since the splicing seam 20 is illuminated by the first light-emitting diodes A on the first connecting surface 2111, uneven light emission from the first surface a and the third surface c is likely to occur.

[0061] In this embodiment, both the first substrate 211 and the second substrate 221 are glass. In other embodiments, the materials of the first substrate 211 and the second substrate 221 can be selected as needed.

[0062] Continue reading Figure 2The first sub-display device 21 further includes a first circuit layer 212; one end of the first circuit layer 212 is disposed on the first surface a of the first substrate 211, and the other end extends along the first connection surface 2111 to the second surface b of the first substrate 211, and a plurality of first light-emitting diodes A are disposed on the first circuit layer 212. A driving structure (not shown) is provided on the second surface b of the first substrate 211. Second light-emitting diodes B disposed on the first substrate 211 are electrically connected to the driving structure through the first circuit layer 212 to cause the second light-emitting diodes B to emit light; first light-emitting diodes A are electrically connected to the first circuit layer 212 and are electrically connected to the driving structure through the first circuit layer 212 to cause the first light-emitting diodes A to emit light.

[0063] The second sub-display device 22 further includes a second circuit layer 222; one end of the second circuit layer 222 is disposed on the third surface c of the second substrate 221, and the other end extends along the second connection surface 2211 to the fourth surface d of the second substrate 221. A driving structure (not shown) is provided on the fourth surface d of the second substrate 221, and a third light-emitting diode N disposed on the third surface c of the second substrate 221 is electrically connected to the driving structure through the second circuit layer 222 to cause the third light-emitting diode N to emit light.

[0064] It is understood that in other embodiments, the first sub-display device 21 and the second sub-display device 22 may also share the same driving structure.

[0065] preparation Figure 2 The method for creating a splicing display device includes: obtaining a first substrate 211 and a second substrate 221; cutting the first substrate 211 to form a first connecting surface 2111 and cutting the second substrate 221 to form a second connecting surface 2211, wherein the second connecting surface 2211 has the opposite structure to the first connecting surface 2111; using side-wiring technology, forming a first circuit layer 212 on the first substrate 211 and a second circuit layer 222 on the second substrate 221; using laser transfer technology, transferring a first light-emitting diode A to the first circuit layer 212 and a second light-emitting diode B to the first surface a of the first substrate 211 to form a first sub-display device 21; using laser transfer technology, transferring a third light-emitting diode N to the third surface c of the second substrate 221 to form a second sub-display device 22; and splicing the first sub-display device 21 and the second sub-display device 22 to form a splicing display device.

[0066] The splicing display device provided in this application embodiment provides a first connecting surface 2111 on a first substrate 211, a second connecting surface 2211 on a second substrate 221, and a plurality of first light-emitting diodes A on the first connecting surface 2111 forming the splicing seam 20, so that the splicing seam 20 emits light, thereby avoiding obvious visual defects in the splicing display device.

[0067] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a splicing display device provided in another embodiment of this application.

[0068] The splicing display device includes a first sub-display device 21 and a second sub-display device 22, which are spliced ​​together, forming a splicing seam 20 between them. The first sub-display device 21 includes a first substrate 211; the second sub-display device 22 includes a second substrate 221. The first substrate 211 has a first connecting surface 2111 near the splicing seam 20; that is, the surface of the first substrate 211 used for splicing with the second substrate 221 is the first connecting surface 2111. The second substrate 221 has a second connecting surface 2211 near the splicing seam 20; that is, the surface of the second substrate 221 used for splicing with the first substrate 211 is the second connecting surface 2211. The first connecting surface 2111 and the second connecting surface 2211 have opposite structures to achieve splicing between the first sub-display device 21 and the second sub-display device 22. In this embodiment, a plurality of first light-emitting diodes A are provided on the second connecting surface 2211, and a reflective layer 213 is provided on the first connecting surface 2111. It can be understood that a plurality of first light-emitting diodes A can be provided on both the first connecting surface 2111 and the second connecting surface 2211, or a plurality of first light-emitting diodes A can be provided only on the second connecting surface 2211; a reflective layer 213 can be provided on both the first connecting surface 2111 and the second connecting surface 2211, or a reflective layer 213 can be provided only on the first connecting surface 2111. Preferably, providing a reflective layer 213 only on the first connecting surface 2111 and a plurality of first light-emitting diodes A only on the second connecting surface 2211 simplifies the process and reduces costs.

[0069] Specifically, the first substrate 211 includes a first surface a and a second surface b arranged opposite to and parallel to each other. The first surface a is provided with a connection circuit layer (not shown) and a plurality of second light-emitting diodes B. The angle α formed between the first connection surface 2111 and the first surface a is greater than or equal to 90 degrees and less than 180 degrees. The second substrate 221 includes a third surface c and a fourth surface d arranged opposite to and parallel to each other. The third surface c is provided with a connection circuit layer (not shown) and a plurality of third light-emitting diodes N. The angle β formed between the second connection surface 2211 and the third surface c is less than or equal to 90 degrees and greater than 0 degrees. After the first substrate 211 and the second substrate 221 are joined, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are located on the same plane. The light emission directions of the second light-emitting diodes B and the third light-emitting diodes N are the same. The reflective layer 213 on the first connection surface 2111 is used to reflect the light emitted by the plurality of first light-emitting diodes A to the same direction as the light emission directions of the second light-emitting diodes B and the third light-emitting diodes N. Specifically, this can be achieved by adjusting the angle of the reflective layer 213 and the light emission direction of the first light-emitting diode A.

[0070] In this embodiment, the first connecting surface 2111 and the second connecting surface 2211 have opposite structures, meaning that the angle α formed between the first connecting surface 2111 and the first surface a is greater than or equal to 90 degrees and less than 180 degrees, while the angle β formed between the second connecting surface 2211 and the third surface c is less than or equal to 90 degrees and greater than 0 degrees. The first connecting surface 2111 and the second connecting surface 2211 are parallel to each other or form an acute angle. When the first connecting surface 2111 and the second connecting surface 2211 form an acute angle, the angle between them is less than 30 degrees, preferably less than 15 degrees. In this embodiment, the first connecting surface 2111 and the second connecting surface 2211 are parallel to each other.

[0071] It is understood that this application sets the first connecting surface 2111 and the second connecting surface 2211 to opposite structures. Compared to setting the first connecting surface 2111 and the second connecting surface 2211 to the same structure, this is beneficial to reducing the width of the splice seam 20. Specifically, setting the first connecting surface 2111 and the second connecting surface 2211 to the same structure means that the included angle α formed between the first connecting surface 2111 and the first surface a is the same as the included angle β formed between the second connecting surface 2211 and the third surface c, for example, both being greater than 90 degrees or both being less than 90 degrees.

[0072] In one implementation, such as Figure 5As shown, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are both planes and located in the same plane. The included angle α between the first connecting surface 2111 and the first surface a is greater than 90 degrees and less than 180 degrees, while the included angle β between the second connecting surface 2211 and the third surface c is less than 90 degrees and greater than 0 degrees. That is, both the first connecting surface 2111 and the second connecting surface 2211 are inclined surfaces, the included angle α between the first connecting surface 2111 and the first surface a is an obtuse angle, and the included angle β between the second connecting surface 2211 and the third surface c is an acute angle. The projection of the first connecting surface 2111 onto the same plane containing the first surface a and the third surface c at least partially overlaps with the projection of the second connecting surface 2211 onto the same plane containing the first surface a and the third surface c. The reflective layer 213 reflects the light emitted by the multiple first light-emitting diodes A and covers the gap M between the first surface a and the third surface c, so that the first light-emitting diodes A emit light at the splicing point, avoiding the phenomenon of display defects. Preferably, a plurality of first light-emitting diodes A are evenly distributed on the entire second connecting surface 2211, and a reflective layer 213 is provided on the entire first connecting surface 2111.

[0073] The included angle α between the first connecting surface 2111 and the first surface a is 110 to 150 degrees; the included angle β between the second connecting surface 2211 and the third surface c is 30 to 70 degrees. Preferably, the included angle α between the first connecting surface 2111 and the first surface a is 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is 45 degrees, which facilitates processing and splicing.

[0074] The included angle α between the first connecting surface 2111 and the first surface a is limited by the thickness of the first substrate 211 and the cutting process; the thicker the first substrate 211, the larger the included angle α between the first connecting surface 2111 and the first surface a. The included angle β between the second connecting surface 2211 and the third surface c is limited by the thickness of the first substrate 211 and the cutting process; the thicker the second substrate 221, the smaller the included angle β between the second connecting surface 2211 and the third surface c. In this embodiment, when the thickness of the first substrate 211 and the second substrate 221 is 0.45 mm to 0.55 mm, the included angle α between the first connecting surface 2111 and the first surface a is 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is 45 degrees; when the thickness of the first substrate 211 and the second substrate 221 is less than 0.45 mm, the included angle α between the first connecting surface 2111 and the first surface a is less than 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is greater than 45 degrees; when the thickness of the first substrate 211 and the second substrate 221 is greater than 0.55 mm, the included angle α between the first connecting surface 2111 and the first surface a is greater than 135 degrees, and the included angle β between the second connecting surface 2211 and the third surface c is less than 45 degrees.

[0075] Please see Figure 6 , Figure 6 yes Figure 5 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device.

[0076] In another embodiment, such as Figure 6As shown, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are both planar and located on the same plane. The angle α formed between the first connecting surface 2111 and the first surface a is 90 degrees, and the angle β formed between the second connecting surface 2211 and the third surface c is 90 degrees. By providing multiple first light-emitting diodes A on the second connecting surface 2211 and a reflective layer 213 on the first connecting surface 2111, light is emitted at the splicing seam 20, avoiding visually obvious display defects. It can be understood that since the first connecting surface 2111 and the second connecting surface 2211 are perpendicular to the same plane where the first surface a and the third surface c are located, the multiple first light-emitting diodes A can emit light from the side, so that the emitted light is directed towards the same plane where the first surface a and the third surface c are located. In this embodiment, the splicing seam 20 can emit light. Although when the user looks directly at the splicing seam 20 from a direction perpendicular to the display panel, there may be a problem that the emitted light cannot completely cover the gap M between the first surface a and the third surface c, compared to not having the first light-emitting diode A, it avoids visual display defects to a certain extent. In addition, when the user looks at the splicing seam 20 at an angle along a direction not perpendicular to the display panel, visual display defects can be effectively avoided.

[0077] Please see Figure 7 , Figure 7 yes Figure 5 A schematic diagram of another embodiment of the first substrate and the second substrate in the provided splicing display device.

[0078] In yet another implementation, such as Figure 7 As shown, the first surface a of the first substrate 211 and the third surface c of the second substrate 221 are both planar and located in the same plane. The included angle α between the first connecting surface 2111 and the first surface a is greater than 90 degrees and less than 180 degrees, while the included angle β between the second connecting surface 2211 and the third surface c is 90 degrees. By providing multiple first light-emitting diodes A on the second connecting surface 2211 and a reflective layer 213 on the first connecting surface 2111, the reflective layer 213 reflects the light emitted by the multiple first light-emitting diodes A and covers the gap M between the first surface a and the third surface c, so that there is light at the splicing point, avoiding the phenomenon of display defects. Alternatively, by providing multiple first light-emitting diodes A on the first connecting surface 2111 and a reflective layer 213 on the second connecting surface 2211, the reflective layer 213 reflects the light emitted by the multiple first light-emitting diodes A and covers the gap M between the first surface a and the third surface c, so that there is light at the splicing seam 20.

[0079] In this embodiment, the splicing accuracy of the splicing display device is 0.1mm to 0.4mm. Here, splicing accuracy refers to the distance between the first connecting surface 2111 and the second connecting surface 2211; when the first connecting surface 2111 and the second connecting surface 2211 are parallel, the splicing accuracy is the vertical distance between them; when the first connecting surface 2111 and the second connecting surface 2211 are not parallel, the splicing accuracy is the shortest distance between any point on the first connecting surface 2111 and the second connecting surface 2211. At this splicing accuracy, the angle α formed between the first connecting surface 2111 and the first surface a, the angle β formed between the second connecting surface 2211 and the third surface c, the multiple first light-emitting diodes A, and the reflective layer 213 are configured as described above, ensuring light at the splicing seam 20, thereby avoiding visually obvious display defects.

[0080] It is understandable that when the splicing accuracy of the splicing display device is less than 0.1mm or greater than 0.4mm, display defects can still be avoided by setting a first connecting surface 2111 and a second connecting surface 2211, setting a reflective layer 213 on the first connecting surface 2111, and setting multiple first light-emitting diodes A on the second connecting surface 2211. When the splicing accuracy is less than 0.1mm, it is not conducive to setting the reflective layer 213 on the first connecting surface 2111 and setting multiple first light-emitting diodes A on the second connecting surface 2211, which increases the installation difficulty. When the splicing accuracy is greater than 0.4mm, since the thickness of the first substrate 211 or the second substrate 221 is usually thin, in order to avoid no light at the splicing seam 20, the included angle α formed between the first connecting surface 2111 and the first surface a needs to be made larger, and the included angle β formed between the second connecting surface 2211 and the third surface c needs to be made smaller, which increases the processing difficulty. Moreover, since the light emitted by the first light-emitting diodes A on the second connecting surface 2211 is reflected by the reflective layer 213 at the splicing seam 20, it is easy to have uneven light output compared with the first surface a and the third surface c.

[0081] In this embodiment, both the first substrate 211 and the second substrate 221 are glass. In other embodiments, the materials of the first substrate 211 and the second substrate 221 can be selected as needed.

[0082] Continue reading Figure 5 The first sub-display device 21 further includes a first circuit layer 212; one end of the first circuit layer 212 is disposed on the first surface a of the first substrate 211, and the other end extends along the first connection surface 2111 to the second surface b of the first substrate 211, and a reflective layer 213 is disposed on the first circuit layer 212. A driving structure (not shown) is provided on the second surface b of the first substrate 211, and a second light-emitting diode B disposed on the first substrate 211 is electrically connected to the driving structure through the first circuit layer 212 to cause the second light-emitting diode B to emit light.

[0083] The second sub-display device 22 further includes a second circuit layer 222; one end of the second circuit layer 222 is disposed on the third surface c of the second substrate 221, and the other end extends along the second connection surface 2211 to the fourth surface d of the second substrate 221; a first light-emitting diode A is disposed on the second circuit layer 222. A driving structure (not shown) is provided on the fourth surface d of the second substrate 221. A third light-emitting diode N disposed on the third surface c of the second substrate 221 is electrically connected to the driving structure through the second circuit layer 222 to make the third light-emitting diode N emit light; the first light-emitting diode A is electrically connected to the second circuit layer 222 and is electrically connected to the driving structure through the second circuit layer 222 to make the first light-emitting diode A emit light.

[0084] It is understood that in other embodiments, the first sub-display device 21 and the second sub-display device 22 may also share the same driving structure.

[0085] preparation Figure 5 The method for creating a splicing display device includes: obtaining a first substrate 211 and a second substrate 221; cutting the first substrate 211 to form a first connecting surface 2111 and cutting the second substrate 221 to form a second connecting surface 2211, wherein the second connecting surface 2211 and the first connecting surface 2111 have opposite structures; using side-wiring technology, forming a first circuit layer 212 on the first substrate 211 and a second circuit layer 222 on the second substrate 221; using laser transfer technology, transferring a second light-emitting diode B to the first surface a of the first substrate 211 and forming a reflective layer 213 on the first connecting surface 2111 to form a first sub-display device 21; using laser transfer technology, transferring a first light-emitting diode A to the second circuit layer 222 and a third light-emitting diode N to the third surface c of the second substrate 221 to form a second sub-display device 22; and splicing the first sub-display device 21 and the second sub-display device 22 to form a splicing display device.

[0086] The splicing display device provided in this application embodiment provides a first connecting surface 2111 on a first substrate 211, a second connecting surface 2211 on a second substrate 221, and a plurality of first light-emitting diodes A on the second connecting surface 2211 forming the splicing seam 20. A reflective layer 213 is provided on the first connecting surface 2111, so that light is emitted at the splicing seam 20, thus avoiding obvious visual defects in the splicing display device.

[0087] It is understood that in other embodiments, the first light-emitting diode A may be provided only in a portion of the first connecting surface 2111 or the second connecting surface 2211, and a reflective layer 213 may be provided on both the first connecting surface 2111 and the second connecting surface 2211. Through multiple reflections by the reflective layer 213 on the first connecting surface 2111 and the second connecting surface 2211, the light emitted by the first light-emitting diode A covers the gap M between the first surface a and the third surface c, so that the first light-emitting diode A emits light at the splicing point, thus avoiding the phenomenon of display defects.

[0088] It is understood that the splicing display device provided in this application includes two sub-display devices. In other embodiments, the above settings can be made when adjacent sub-display devices are spliced ​​to avoid poor display caused by the lack of light at the splicing seam.

[0089] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A splicing display device, characterized in that, include: A first sub-display device includes a first substrate; the first substrate includes a first surface and a second surface arranged opposite and parallel to each other; a plurality of second light-emitting diodes are disposed on the first surface. The second sub-display device is spliced ​​with the first sub-display device; the second sub-display device includes a second substrate; the second substrate includes a third surface and a fourth surface arranged opposite to and parallel to each other; the third surface is provided with a plurality of third light-emitting diodes; The first substrate has a first connecting surface near the splicing seam; the first connecting surface is a surface used for splicing with the second substrate, and the angle formed between the first connecting surface and the first surface is greater than 90 degrees and less than 180 degrees; the second substrate has a second connecting surface near the splicing seam; the second connecting surface is a surface used for splicing with the first substrate, and the angle formed between the second connecting surface and the third surface is less than or equal to 90 degrees and greater than 0 degrees; the second connecting surface and the first connecting surface have opposite structures; the second connecting surface is provided with a plurality of first light-emitting diodes, and the first connecting surface is provided with a reflective layer for reflecting the light emitted by the plurality of first light-emitting diodes to the same direction as the light emission direction of the second light-emitting diodes and the third light-emitting diodes.

2. The splicing display device according to claim 1, characterized in that, Multiple first light-emitting diodes are disposed only on the second connection surface, and a reflective layer is provided only on the first connection surface.

3. The splicing display device according to claim 1, characterized in that, The angle between the first connecting surface and the first surface is 110 degrees to 150 degrees; the angle between the second connecting surface and the third surface is 30 degrees to 70 degrees.

4. The splicing display device according to claim 3, characterized in that, The thickness of the first substrate and the second substrate is 0.45 mm to 0.55 mm, the angle between the first connecting surface and the first surface is 135 degrees, and the angle between the second connecting surface and the third surface is 45 degrees. Alternatively, the thickness of the first substrate and the second substrate is less than 0.45 mm, the angle between the first connecting surface and the first surface is less than 135 degrees, and the angle between the second connecting surface and the third surface is greater than 45 degrees. Alternatively, the thickness of the first substrate and the second substrate is greater than 0.55 mm, the angle between the first connecting surface and the first surface is greater than 135 degrees, and the angle between the second connecting surface and the third surface is less than 45 degrees.

5. The splicing display device according to claim 1, characterized in that, The first surface and the third surface are both planar and located in the same plane. The projection of the first connecting surface onto the same plane containing the first surface and the third surface overlaps at least partially with the projection of the second connecting surface onto the same plane containing the first surface and the third surface. The reflective layer reflects the light emitted by the plurality of first light-emitting diodes and covers the gap between the first surface and the third surface.

6. The splicing display device according to claim 5, characterized in that, Multiple first light-emitting diodes are evenly distributed across the entire second connection surface; the reflective layer is disposed across the entire first connection surface.

7. The splicing display device according to claim 1, characterized in that, Both the first substrate and the second substrate are glass; the splicing accuracy of the splicing display device is 0.1mm~0.4mm.

8. The splicing display device according to claim 1, characterized in that, The first sub-display device further includes a first circuit layer; one end of the first circuit layer is disposed on the first surface, and the other end extends along the first connection surface to the second surface; The second sub-display device further includes a second circuit layer; one end of the second circuit layer is disposed on the third surface, and the other end extends along the second connection surface to the fourth surface; Multiple first light-emitting diodes are disposed on the second circuit layer and electrically connected to the second circuit layer.

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