Display module, splicing support, splicing display device and splicing method thereof
By designing the display module and splicing bracket, and using the heat dissipation structure and positioning lines to achieve high-precision splicing of Micro LED splicing screens, it solves the problem that manual assembly cannot meet the seam size requirements of Micro LED splicing screens.
Patent Information
- Application Number
- CN202411724108.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-01-24
AI Technical Summary
The prior art cannot achieve high-precision splicing of Micro LED splicing screens through manual assembly and positioning, especially because the seam size requirements exceed the manual assembly accuracy capability.
A display module, including the display panel and the heat dissipation structure. By setting up the first child's cooling structure and the second child heat dissipation structure, the high -precision assembly of the splicing display device with a seam of not less than 50 microns is achieved.
Improve stitching accuracy, can achieve high -precision stitching with a seam of less than 50 microns, suitable for Micro LED and other display screens that require high precision stitching.
Smart Images
Figure CN119364700A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of display technology, and in particular to a display module, a splicing bracket, a splicing display device and a splicing method thereof. Background Art
[0002] In the related art, the assembly and positioning of the spliced screen is mainly performed manually. The precision of the manual assembly seam is about 0.5mm. Considering the dimensional tolerance of a single screen and other factors, the seam of the small-seam liquid crystal display (LCD) product that can actually be mass-produced on the market is about 0.9mm. However, for the splicing display of the Micro Light Emitting Diode Display (Micro LED), the size requirement for the seam is far beyond the manual assembly precision capability. Therefore, the assembly and positioning of the Micro LED spliced screen cannot be performed manually.
[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention
[0004] The purpose of the present disclosure is to provide a display module, a splicing bracket, a splicing display device and a splicing method thereof, which can realize the splicing of splicing display devices with a splicing seam of not less than 50 microns and improve the splicing accuracy.
[0005] According to one aspect of the present disclosure, there is provided a display module, comprising:
[0006] Display panel;
[0007] A heat dissipation structure, arranged on the backlight side of the display panel; the heat dissipation structure comprises a first sub-heat dissipation structure and a second sub-heat dissipation structure, the first sub-heat dissipation structure comprises a connection area and a fixing area surrounding the connection area, the first sub-heat dissipation structure is connected to the display panel, and the second sub-heat dissipation structure is arranged on a side of the first sub-heat dissipation structure away from the display panel and connected to the connection area of the first sub-heat dissipation structure; the fixing area of the first sub-heat dissipation structure close to a side of the second sub-heat dissipation structure is used for connecting a splicing bracket;
[0008] The orthographic projection of the first sub-heat dissipation structure on the second sub-heat dissipation structure is located within the orthographic projection of the display panel on the second sub-heat dissipation structure, and the plane spacing between at least one side edge of the first sub-heat dissipation structure and the edge of the display panel is not less than 0.5 mm.
[0009] In an embodiment of the present disclosure, a clamping structure is provided on a side of the second sub-heat dissipation structure facing away from the display panel.
[0010] In one embodiment of the present disclosure, the heat dissipation structure is made of metal, and the clamping structure is made of stainless steel.
[0011] In one embodiment of the present disclosure, in the fixed area, the first sub-heat dissipation structure has a plurality of first mounting holes on a side away from the display panel; the flatness of the first sub-heat dissipation structure on a side close to the display panel is less than 40 μm, and the flatness of the fixed area on a side close to the second sub-heat dissipation structure is less than 40 μm.
[0012] In one embodiment of the present disclosure, the second sub-heat dissipation structure has a plurality of heat dissipation grooves.
[0013] According to another aspect of the present disclosure, there is provided a splicing bracket, comprising:
[0014] at least one first sub-bracket;
[0015] At least one group of second sub-bracket groups; each group of second sub-bracket groups includes two second sub-brackets; a plurality of second sub-brackets are sequentially arranged on the first sub-bracket along the extension direction of the first sub-bracket; the splicing bracket has at least one assembling area, each of the assembling area is used to set a display module; the splicing bracket has an installation reference line for positioning the display module, the installation reference line includes a first direction positioning line and a second direction positioning line that are perpendicular to each other, and at least one of the first direction positioning line and the second direction positioning line is arranged on one of the second sub-bracket groups.
[0016] In one embodiment of the present disclosure, the first direction positioning line and the second direction positioning line are both arranged on one of the second sub-bracket groups, and the second sub-bracket group is one of the two second sub-bracket groups located at both ends of the first sub-bracket.
[0017] According to another aspect of the present disclosure, a spliced display device is provided, comprising:
[0018] At least one of the above-mentioned splicing brackets;
[0019] A plurality of the above-mentioned display modules; the first sub-heat dissipation structure of the display module is arranged on the second sub-bracket of the second sub-bracket group and is connected and fixed by a fixing piece; the orthographic projection of the second sub-heat dissipation structure on the splicing bracket is located between two of the second sub-brackets, and the plane spacing between the edge of the second sub-heat dissipation structure and the second sub-bracket is not less than 1mm; at least along the arrangement direction of the plurality of the display modules, the plane spacing between the edge of the first sub-heat dissipation structure and the edge of the display module is not less than 0.5mm.
[0020] According to another aspect of the present disclosure, a splicing method of the splicing display device is provided, comprising:
[0021] Detect the position information of the installation reference line on the splicing bracket;
[0022] Installing a first display module; obtaining one of the display modules that has passed the inspection, detecting the position information of the display module, and installing the display module based on the position information of the display module and the position information of the installation reference line as the first display module;
[0023] Install the i-th display module, obtain the i-th display module that has passed the inspection, detect the position information of the i-th display module, and install the i-th display module based on the position information of the i-th display module and the position information of the display module next to the installation position, wherein i is any positive integer from 2 to M, and M is the total number of display modules.
[0024] In one embodiment of the present disclosure, installing the display module based on the position information of the display module and the position information of the installation reference line as the first display module includes the following process:
[0025] After making the display module flush with the first direction positioning line and the display module flush with the second direction positioning line, the display module is installed as the first display module;
[0026] Alternatively, after the display module is aligned with the first direction positioning line and the display module is aligned with the second direction positioning line, based on the distance difference between the second direction positioning line and the bottom surface of the splicing bracket, the position of the display module is adjusted along the extension direction of the first direction positioning line so that the display module is aligned with the bottom surface of the splicing bracket, and the display module is installed as the first display module.
[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The above and other features and advantages of the present disclosure will become more apparent by describing in detail its exemplary embodiments with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present disclosure, and for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work.
[0029] Figure 1 It is a schematic diagram of the principle of mutual interference between two display screens in the related art, wherein the circle indicates the interference position;
[0030] Figure 2 It is a structural schematic diagram of a heat dissipation structure in one embodiment of the present disclosure.
[0031] Figure 3 It is a schematic diagram of the structure of a display module in one embodiment of the present disclosure.
[0032] Figure 4 It is a schematic diagram of the structure of a display module in one embodiment of the present disclosure.
[0033] Figure 5 It is a schematic diagram of the structure of a spliced bracket in one embodiment of the present disclosure.
[0034] Figure 6 It is a schematic diagram of the structure of a spliced bracket in one embodiment of the present disclosure.
[0035] Figure 7 It is a partial structural schematic diagram of a spliced display device in one embodiment of the present disclosure.
[0036] Figure 8 It is a partial structural schematic diagram of a spliced display device in one embodiment of the present disclosure.
[0037] Fig. 9 The figure is a schematic structural diagram of an assembly process of a spliced display device in one embodiment of the present disclosure.
[0038] Fig.10 It is a schematic diagram of the structure of a splicing device in one embodiment of the present disclosure.
[0039] Fig.11 It is a schematic diagram of the structure of a splicing device in one embodiment of the present disclosure.
[0040] Reference numerals:
[0041] 1. Display panel; 2. Heat dissipation structure; 21. First sub-heat dissipation structure; 22. Second sub-heat dissipation structure; AA, connection area; BB, fixing area; 23. Clamping structure; 24. First mounting hole; 25. Heat dissipation groove; 3. Splicing bracket; 31. First sub-bracket; 32. Second sub-bracket; PR, assembly area; A1, first direction positioning line; A2, second direction positioning line; 33. Second mounting hole; 34. Reinforcement rib; 35. Fixing piece; 4. Support platform; 5. Splicing bracket fixing device; 6. Module automatic feeding device; 61. Conveying structure; 62. Top feeding structure; 7. Grasping device; 8. Three-dimensional moving device; 9. Detection device. DETAILED DESCRIPTION
[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the disclosure will be comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, materials, devices, etc. may be employed. In other cases, known technical solutions are not shown or described in detail to avoid blurring various aspects of the present disclosure. The same reference numerals in the figures represent the same or similar structures, and thus their detailed descriptions will be omitted.
[0043] In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and thus their repeated description will be omitted. The terms "a", "an" and "the" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open-ended inclusive meaning and mean that in addition to the listed elements / components / etc., additional elements / components / etc. may exist.
[0044] In the related art, the assembly and positioning of the spliced screen is mainly done manually. The precision of the manual assembly seam is about 0.5mm. Considering the dimensional tolerance of a single screen and other factors, the actual small seam liquid crystal display (LCD) product seam that can be mass-produced on the market is about 0.9mm. However, for the splicing display of the Micro Light Emitting Diode Display (Micro LED), the size requirement for the seam is far beyond the manual assembly precision capability. Therefore, the assembly and positioning of the Micro LED spliced screen cannot be performed manually.
[0045] For example, the gap of Micro LED is required to be 0.1mm, see Figure 1 , a very small angle deviation between two adjacent single screens (0.1°@100mm screen width, in other words, there is a 0.1° angle deviation between two adjacent single screens with a screen width of 100mm) will cause interference in the corners of the single screens. Even if no interference occurs during assembly, due to the non-parallelism of the edges of the two single screens, there is a possibility of interference due to thermal expansion and contraction after the Micro LED display is lit, and the safety of the Micro LED spliced screen cannot be guaranteed.
[0046] In order to solve the above problems, the present disclosure provides a splicing display device, see Figure 8 , including multiple display modules and a splicing bracket 3, wherein all the display modules are arranged on the splicing bracket 3 to form a full-surface display.
[0047] In one embodiment of the present disclosure, see Figure 3 , Figure 4 and Figure 7 The display module includes a display panel 1 and a heat dissipation structure 2 located on the backlight side of the display panel 1. The heat dissipation structure 2 is used to dissipate heat from the display panel 1 and to connect a splicing bracket 3. After the display panel 1 is lit, the temperature will rise, and the temperature difference before and after lighting is large. Under the extremely small design seam, based on the effect of thermal expansion and contraction, the large temperature difference will cause the display module to swell, which will in turn cause the design seam to fail. In the present disclosure, in order to reduce the risk of interference caused by thermal expansion and contraction after the display panel 1 is lit, a heat dissipation structure 2 is set on the backlight side of the display panel 1 to accelerate the heat dissipation of the display panel 1, so that the temperature change of the display module before and after lighting is small. In this way, the risk of interference caused by thermal expansion and contraction after the display panel 1 is lit can be reduced. In one example, the display module can be a Micro LED. In other examples, the display module can be other screens with assembly requirements.
[0048] In one embodiment of the present disclosure, see Figure 2-Figure 4 , the center of the heat dissipation structure 2 coincides with the center of the display panel 1. It can be understood that the heat dissipation structure 2 is evenly arranged around the center of the display panel 1, which is conducive to uniform heat dissipation of the display panel 1.
[0049] In one embodiment of the present disclosure, the heat dissipation structure 2 is made of metal material. The use of metal materials for heat conduction and heat dissipation can ensure good heat dissipation effect, high strength, and stability of the display module, while not increasing costs too much. In one example, the heat dissipation structure 2 can be made of aluminum alloy. In other examples, the heat dissipation structure 2 can also be made of other metals besides aluminum alloy, such as copper, etc.
[0050] In one embodiment of the present disclosure, see Figure 2 and Figure 3 The heat dissipation structure 2 has a first sub-heat dissipation structure 21 and a second sub-heat dissipation structure 22. The first sub-heat dissipation structure 21 has a fixed area BB and a connection area AA. The fixed area BB surrounds the connection area AA. The first sub-heat dissipation structure 21 is connected to the display panel 1. The second sub-heat dissipation structure 22 is arranged on the side of the first sub-heat dissipation structure 21 away from the display panel 1, and is connected to the connection area AA of the first sub-heat dissipation structure 21. The orthographic projection of the second sub-heat dissipation structure 22 on the display panel 1 is located within the orthographic projection of the first sub-heat dissipation structure 21 on the display panel 1, and the orthographic projection of the second sub-heat dissipation structure 22 on the display panel 1 is smaller than the orthographic projection of the first sub-heat dissipation structure 21 on the display panel 1. In this way, the heat dissipation structure 2 forms a step structure on the side away from the display panel 1, and the step surface parallel to the display panel 1 is the fixed area BB.
[0051] In one embodiment of the present disclosure, the step surface has a plurality of first mounting holes 24. In the present disclosure, the first mounting holes 24 are provided on the step surface for connecting the splicing bracket 3, so as to facilitate the fixing of the display module and the splicing bracket 3.
[0052] In one embodiment of the present disclosure, the edge shape of the first sub-heat dissipation structure 21 is the same as the edge shape of the display panel 1, so that it is convenient to set the first mounting hole 24 and to match the splicing bracket 3 to achieve a stable connection between the display module and the splicing bracket 3. In one example, the second sub-heat dissipation structure 22 is a cylindrical structure. Of course, in other examples, the first sub-heat dissipation structure 21 and the second sub-heat dissipation structure 22 can also be other shapes not shown.
[0053] In one embodiment of the present disclosure, the first sub-heat dissipation structure 21 and the second sub-heat dissipation structure 22 are integrally provided, so as to simplify the process.
[0054] In one embodiment of the present disclosure, the orthographic projection of the first sub-heat dissipation structure 21 on the second sub-heat dissipation structure 22 is located within the orthographic projection of the display panel 1 on the second sub-heat dissipation structure 22, and the orthographic projection of the first sub-heat dissipation structure 21 on the second sub-heat dissipation structure 22 is smaller than the orthographic projection of the display panel 1 on the second sub-heat dissipation structure 22. The plane spacing Q1 between the edge of at least one side of the first sub-heat dissipation structure 21 and the edge of the display panel 1 is not less than 0.5 mm (the plane spacing in the present disclosure is the spacing between the edges of the first sub-heat dissipation structure 21 and the display panel 1 when they are in the same plane), wherein the at least one side is a side where two adjacent display modules are close to each other in the assembled display device. In other words, as long as another display module is provided on one side of a display module, the plane spacing Q1 between the edge of the first sub-heat dissipation structure 21 on that side and the edge of the display panel 1 is not less than 0.5 mm. This is because when positioning and assembling the display module, the edge of the display module is required for positioning in the present disclosure. If the edge of the first sub-heat dissipation structure 21 exceeds the edge of the display module, when the display module has not reached the target gap for splicing, the adjacent heat dissipation structures 2 will interfere with each other, which will affect the assembly accuracy of the spliced display module. Limiting the distance between the edge of the first sub-heat dissipation structure 21 and the edge of the display panel 1 can avoid the above situation, reduce the risk of interference between the heat dissipation structures 2, and set a large area of the heat dissipation structure 2 as much as possible to ensure the heat dissipation effect and reduce the risk of interference of the display panel 1 due to thermal expansion and contraction after the display panel 1 is lit.
[0055] In one example, see Figure 3 , the plane spacing Q1 between all edges of the first sub-heat dissipation structure 21 and the corresponding edges of the display panel 1 is not less than 0.5mm. In this way, it is easy to prepare. It can be understood that the edges of the display panel 1 all exceed the edges of the heat dissipation structure 2 by at least 0.5mm. For example, the plane spacing Q1 between the edge of the first sub-heat dissipation structure 21 and the edge of the display panel 1 is 0.5mm. For another example, the plane spacing Q1 between the edge of the first sub-heat dissipation structure 21 and the edge of the display panel 1 is 0.7mm. The plane spacing Q1 between the edge of the first sub-heat dissipation structure 21 and the edge of the display panel 1 is 0.85mm. The plane spacing Q1 between the edge of the first sub-heat dissipation structure 21 and the edge of the display panel 1 is 0.97mm. The plane spacing Q1 between the edge of the first sub-heat dissipation structure 21 and the edge of the display panel 1 is 1.1mm. Of course, in addition to this, the plane spacing Q1 between the edge of the first sub-heat dissipation structure 21 and the edge of the display panel 1 can also be other distances that are not shown.
[0056] In one embodiment of the present disclosure, see Figure 2, the second sub-heat dissipation structure 22 has a plurality of heat dissipation grooves 25. In this way, the heat dissipation surface area of the second heat dissipation structure 2 can be increased, the heat dissipation capacity can be further improved, and the risk of interference caused by thermal expansion and contraction of the display panel 1 after lighting up can be reduced. In this example, a plurality of heat dissipation grooves 25 are evenly arranged around the center of the display panel 1, so that uniform heat dissipation of the display panel 1 can be achieved. Of course, a plurality of heat dissipation grooves 25 can be set in the high heat zone of the display panel 1, and the number of heat dissipation grooves 25 set in the low heat zone of the display panel 1 can be less than the number of heat dissipation grooves 25 set in the high heat zone, so as to perform targeted heat dissipation and improve the heat dissipation effect.
[0057] In one embodiment of the present disclosure, see Figure 2 and Figure 4 , a clamping structure 23 is provided on the second sub-heat dissipation structure 22, so that the movement of the display module can be realized by grabbing the clamping structure 23. In one example, the second sub-heat dissipation structure 22 has a mounting groove on the side away from the display panel 1, and the clamping structure 23 is arranged in the mounting groove, wherein the distance between the surface of the clamping structure 23 on the side away from the display panel 1 and the display panel 1 is greater than the distance between the surface of the second sub-heat dissipation structure 22 on the side away from the display panel 1 and the display panel 1. In this way, the clamping structure 23 protrudes from the second sub-heat dissipation structure 22, which is convenient for clamping the clamping structure 23. In another example, the second sub-heat dissipation structure 22 has a mounting groove on the side away from the display panel 1, and the clamping structure 23 is arranged in the mounting groove, wherein the distance between the surface of the clamping structure 23 on the side away from the display panel 1 and the display panel 1 is not greater than the distance between the surface of the second sub-heat dissipation structure 22 on the side away from the display panel 1 and the display panel 1, and there is a gap between the groove wall of the mounting groove and the clamping structure 23, so that the clamping structure 23 is convenient for clamping through the set gap, and in addition, the gap can also be used as a heat dissipation groove 25 to enhance the heat dissipation effect.
[0058] In one embodiment of the present disclosure, the center of the clamping structure 23 coincides with the center of the display panel 1, so that the display module can be stably clamped. In one example, the clamping structure 23 is a quadrangular prism, and the edge of the clamping structure 23 is equal to the edge of the display panel 1. In the present disclosure, equal everywhere means that the distance is equal, but preparation errors should be allowed, for example, an error of no more than 10% is allowed. In one example, the clamping structure 23 is made of stainless steel.
[0059] In one embodiment of the present disclosure, the flatness of the connection surface between the first sub-heat dissipation structure 21 and the display panel 1, and the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 is less than 40μm. In this way, the consistency of the light-emitting surface height of each display module in the spliced display device can be ensured. For example, the flatness of the connection surface between the first sub-heat dissipation structure 21 and the display panel 1, and the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 is 35μm. For another example, the flatness of the connection surface between the first sub-heat dissipation structure 21 and the display panel 1, and the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 is 32μm. For another example, the flatness of the connection surface between the first sub-heat dissipation structure 21 and the display panel 1, and the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 is 30μm. For another example, the flatness of the connection surface between the first sub-heat dissipation structure 21 and the display panel 1, and the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 is 29μm. For another example, the flatness of the connection surface between the first sub-heat dissipation structure 21 and the display panel 1, and the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 is 28 μm. Of course, the connection surface between the first sub-heat dissipation structure 21 and the display panel 1, and the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 may also be other flatnesses not shown. The flatness of the connection surface between the first sub-heat dissipation structure 21 and the display panel 1 and the flatness of the fixed area BB on the side of the first sub-heat dissipation structure 21 away from the display panel 1 may also be different.
[0060] In one embodiment of the present disclosure, the splicing bracket 3 is used to realize the splicing of multiple display modules to form a spliced display module. Figure 5-Figure 9 The splicing bracket 3 includes at least one first sub-bracket 31 and at least one second sub-bracket group, each second sub-bracket group includes two second sub-brackets 32; wherein, a group of two second sub-brackets 32 is used to fix the two sides of the display module. The multiple groups of second sub-bracket groups are arranged in sequence along the extension direction of the first sub-bracket 31, and the two second sub-brackets 32 of each group are arranged in sequence along the extension direction of the first sub-bracket 31, and the second sub-bracket 32 is connected to the first sub-bracket 31.
[0061] In one embodiment of the present disclosure, a first direction positioning line A1 and a second direction positioning line A2 are set on the splicing bracket 3. The second direction positioning line A2 and the first direction positioning line A1 can be positioning references for assembling display modules. In this way, the possibility of angle deviation between two adjacent display modules can be reduced, thereby improving the assembly accuracy.
[0062] In one example, the first sub-bracket 31 has a first surface B1, and the second sub-bracket 32 has a second surface B2, and the first surface B1 is perpendicular to the second surface B2. In this way, the first surface B1 can be used as the first direction positioning line A1, and the second surface B2 can be used as the second direction positioning line A2 (the edge of the first surface B1 is perpendicular to the edge of the second surface B2). In this way, there is no need to additionally set the first direction positioning line A1 and the second direction positioning line A2, which simplifies the preparation process of the splicing bracket 3, and the first surface B1 and the second surface B2 are used as reference surfaces when assembling the display module to ensure the accuracy of the display module assembly. After installation, one of the edges of the display module is flush with the first surface B1, and one of the edges of the display module is flush with the second surface B2.
[0063] In another example, see Figure 7 , a first direction positioning line A1 and a second direction positioning line A2 are set on the second sub-bracket 32, the first direction positioning line A1 and the second direction positioning line A2 are perpendicular to each other, and the first direction is used to calibrate one edge of the display module, and the second direction positioning line A2 is used to calibrate the other edge of the display module. The first direction positioning line A1 and the second direction positioning line A2 are used to reduce the assembly deviation and improve the assembly accuracy. In this example, the positions of the first direction positioning line A1 and the second direction positioning line A2 are not limited, as long as they can meet the calibration requirements. In this example, the Y-direction positioning line is set on the second sub-bracket 32. When assembling, the display module can be moved to one edge to be flush with the X-direction positioning line, and the other edge to be flush with the Y-direction positioning line. Then, according to the distance between the Y-direction positioning line and the second surface B2, the display module is moved, and the position of the display module is compensated, and then the display module is fixed.
[0064] In one embodiment of the present disclosure, see Figure 5 and Fig. 9 The second direction positioning line A2 and the first direction positioning line A1 may be formed by laser etching. In other examples, they may also be formed by other methods.
[0065] In one embodiment of the present disclosure, the splicing bracket 3 includes a first sub-bracket 31 and a group of second sub-brackets, a plurality of second sub-brackets 32 are sequentially connected to the first sub-bracket 31, the second sub-bracket 32 has at least one assembly area PR, each assembly area PR is provided with a display module, each assembly area PR has a plurality of second mounting holes 33, the plurality of second mounting holes 33 are arranged one-to-one with the plurality of first mounting holes 24, the second mounting holes 33 are arranged in a second sub-bracket 32, and the display module is fixed by the first mounting holes 24 and the second mounting holes 33 thereon through the fixing member 35, thereby realizing the fixing of the display module and the splicing bracket 3. In order to reduce the interference between the heat dissipation structure 2 and the splicing bracket 3, the horizontal spacing Q2 between the second sub-heat dissipation structure 22 and the second sub-bracket 32 is greater than 1mm. For example, the horizontal spacing Q2 between the second sub-heat dissipation structure 22 and the second sub-bracket 32 is 1.2mm. For another example, the horizontal spacing Q2 between the second sub-heat dissipation structure 22 and the second sub-bracket 32 is 1.25mm. For another example, the horizontal spacing Q2 between the second sub-heat dissipation structure 22 and the second sub-bracket 32 is 1.4 mm. For another example, the horizontal spacing Q2 between the second sub-heat dissipation structure 22 and the second sub-bracket 32 is 1.5 mm. For another example, the horizontal spacing Q2 between the second sub-heat dissipation structure 22 and the second sub-bracket 32 is 2 mm. Of course, the gap between the second sub-heat dissipation structure 22 and the second sub-bracket 32 may also be other parameters not shown.
[0066] In another example, see Figure 5 and Figure 8 (The assembly area in the column direction is only briefly illustrated and not fully shown), the splicing bracket 3 includes a first sub-bracket 31 and multiple groups of second sub-bracket groups. Multiple second sub-brackets 32 can be arranged in sequence along the extension direction of the first sub-bracket 31, and the second sub-bracket 32 can have multiple assembly areas PR along its extension direction. In this way, a splicing display module with N rows and M columns can be formed. In this example, when the number of assembly areas PR on the second sub-bracket 32 is large, the number of first sub-brackets 31 can be increased in time to ensure the stability of the entire second sub-bracket 32. For example, the second sub-bracket group can be two groups. For another example, the second sub-bracket group can be three groups. Of course, in other examples, the number of second sub-bracket groups can be more, depending on the number required.
[0067] In one example, along a direction perpendicular to the extension of the first sub-bracket 31 , second sub-bracket groups can be provided on both sides of the first sub-bracket 31 , so that the number of spliced display modules can be increased.
[0068] In one embodiment of the present disclosure, see Figure 7 ( Figure 7In order to clearly indicate the fixing member), the first sub-heat dissipation structure 21 of the display module is arranged on the splicing bracket 3 and fixed by the fixing member 35; see Figure 8 , the orthographic projection of the second sub-heat dissipation structure 22 on the splicing bracket 3 is located between the two second sub-brackets 32, and the horizontal spacing Q2 between the edge of the second sub-heat dissipation structure 22 and the second sub-bracket 32 is not less than 1mm, so that the risk of interference between the second sub-heat dissipation structure 22 and the second sub-bracket 32 during installation can be reduced. For example, the horizontal spacing Q2 between the edge of the second sub-heat dissipation structure 22 and the second sub-bracket 32 is equal to 1mm. For another example, the horizontal spacing Q2 between the edge of the second sub-heat dissipation structure 22 and the second sub-bracket 32 is equal to 1.2mm. For another example, the horizontal spacing Q2 between the edge of the second sub-heat dissipation structure 22 and the second sub-bracket 32 is equal to 1.4mm. For another example, the horizontal spacing Q2 between the edge of the second sub-heat dissipation structure 22 and the second sub-bracket 32 is equal to 1.5mm. For another example, the horizontal spacing Q2 between the edge of the second sub-heat dissipation structure 22 and the second sub-bracket 32 is equal to 2mm. Of course, the gap between the second sub-heat dissipation structure 22 and the second sub-bracket 32 can also be other parameters not shown.
[0069] In one example, the fixing member 35 can be a screw, which does not increase the cost too much and is easy to install. Of course, in other examples, the fixing member 35 can also be other structures with the same function.
[0070] In one embodiment of the present disclosure, see Figure 6 The first sub-bracket 31 and the second sub-bracket 32 form a right-angle structure, and a reinforcing rib 34 is provided on the right-angle structure to improve the stability of the spliced display device.
[0071] In one embodiment of the present disclosure, a plurality of first mounting holes 24 and a plurality of second mounting holes 33 are arranged in one-to-one correspondence, and the size of the second mounting holes 33 can be slightly larger than the size of the first mounting holes 24. This is because the processing tolerance and assembly tolerance make it impossible for the display module and the splicing bracket 3 to be completely aligned when they are spliced and assembled, and sufficient margin is required. In this way, it can be ensured that the display module is installed based on the first direction positioning line A1 and the second direction positioning line A2 as much as possible, thereby ensuring the splicing accuracy of the spliced display module.
[0072] In one embodiment of the present disclosure, the first direction positioning line A1 and the second direction positioning line A2 are set on one of the two second sub-brackets 32 located at both ends. It can be understood that if assembled from left to right, see Fig. 9, the first direction positioning line A1 and the second direction positioning line A2 are set on the first second sub-bracket 32 on the left side. If assembled from right to left, the first direction positioning line A1 and the second direction positioning line A2 are set on the first second sub-bracket 32 on the right side. In this way, when assembling the first display module, the first direction positioning line A1 and the second direction positioning line A2 can be used to calibrate the position, and the subsequent display modules are calibrated with the position of the previous display module, thereby improving the splicing accuracy of the spliced display device and reducing the risk of interference between display modules.
[0073] In one embodiment of the present disclosure, the first direction positioning line A1 may be an X-direction positioning line, and the second direction positioning line A2 may be a Y-direction positioning line.
[0074] By adopting the solution disclosed in the present invention, the gap between two adjacent display modules can be as small as 50 microns.
[0075] The present disclosure also provides a splicing device for splicing display devices, see Fig.10 and Fig.11 (in Fig.11 for Fig.10 The cross-sectional schematic diagram at BB in the middle) includes a support platform 4, a splicing bracket fixing device 5, a module automatic feeding device 6, a grasping device 7, a three-dimensional moving device 8, and a detection device 9.
[0076] The support platform 4 is used to support each device, and the support platform 4 has a material taking port, through which the display module is transported. The splicing bracket fixing device 5 is arranged on the support platform 4, and is used to fix the splicing bracket 3, so that the splicing bracket 3 is arranged according to the Fig. 9 The three-dimensional moving device 8 is arranged in the direction shown, and is arranged on the supporting platform 4. The power output end of the three-dimensional moving module is connected with a grabbing device 7, which is used to grab the display module, and the material taking port is located on the movement path of the grabbing device 7. The module automatic feeding device 6 is used to provide the display module, and the module automatic feeding device 6 can be arranged below the supporting platform 4, including a conveying structure 61 and a top delivery structure 62 located on the side of the conveying structure 61 away from the supporting platform 4; the conveying structure 61 outputs the display module in the horizontal direction, and the top delivery structure 62 lifts the display module up and sends it to the material taking port of the supporting platform 4 after the display module reaches the bottom of the material taking port, so as to be grabbed by the grabbing device 7.
[0077] The detection device 9 is used to detect the position information of the splicing bracket, the position information of the installation reference line, the position information of each display module after installation, the edge parameter information of the display module, etc. In one example, the detection device 9 can use multiple detection cameras. Fig.10 and Fig.11 In the figure, the detection device 9 is not fully shown.
[0078] In this structure, the automatic module feeding device 6 conveys the display module, and after the grabbing device 7 grabs the display module, the position of the display module can be moved by the three-dimensional moving device 8.
[0079] In one example, the module automatic feeding device 6 can be used in a horizontal feeding manner along a guide rail. Fig.10 The display module is transported in the feeding direction and the discharging direction shown in FIG. The grabbing device 7 can grab the display module by energizing the electromagnet grabber to open the clamping structure 23 on the grabbing display module.
[0080] Of course, each device may also adopt other structures to achieve this function.
[0081] The present disclosure also provides a splicing method for a spliced display device, comprising the following steps:
[0082] Assembling the display panel 1 and the heat dissipation structure 2 to form a display module;
[0083] Detect the position information of the installation reference line on the splicing bracket 3 and the position information of the second surface B2; specifically, first fix the position of the splicing bracket 3, and detect the position information of the installation reference line, the position information of the installation reference line includes the position information of the first direction positioning line A1 and the position information of the second direction positioning line A2;
[0084] Install the first display module; specifically:
[0085] Grab one of the display modules and detect edge information and position information of the display module; wherein the edge information includes the distance between any two relative edge lines and the parallelism between any two relative edge lines, and the position information includes position information of edge lines of the display module, wherein the edge lines include a first edge line A, a second edge line B, a third edge line C, and a fourth edge line D, wherein the first edge line A and the third edge line C are relatively parallel, the second edge line B and the fourth edge line D are relatively parallel, and the second edge line B is perpendicular to the first edge line A;
[0086] If the edge information meets the preset edge threshold, the display module is installed as the first display module; if the edge information does not meet the preset edge threshold, the display module is re-captured until the edge information of the display module meets the preset edge threshold, and the display module that meets the preset edge threshold is installed as the first display module; wherein the edge threshold includes a distance threshold between any two opposite sides and a parallelism threshold between any two opposite sides;
[0087] The display module is installed based on the position information of the display module and the position information of the installation reference line as the first display module; specifically:
[0088] Based on the position information of the first direction positioning line A1 and the position information of the first edge line A of the first display module, the position of the first display module is adjusted so that the first edge line A is located on the extension line of the first direction positioning line A1; based on the position information of the second direction positioning line A2 and the position information of the second edge line B of the first display module, the position of the display module is adjusted so that the second edge line B of the first display module is located on the extension line of the second direction positioning line A2 (it can be understood that the first edge line A is flush with the first direction positioning line A1, and the second edge line B is flush with the second direction positioning line A2); based on the gap between the position information of the second direction positioning line A2 and the position information of the second surface B2, the position of the first display module is adjusted so that the second edge line B of the first display module is flush with the second surface, and then the first display module is fixed through the first mounting hole 24 and the second mounting hole 33; wherein, if the position information of the second direction positioning line A2 is the same as the position information of the second surface, there is no need to adjust the position of the first display module, and it can be directly installed;
[0089] The i-th display module is installed along the extension direction of the first sub-bracket 31; specifically:
[0090] Grab a display module, and detect edge information and position information of the display module; wherein the edge information includes the distance between any two relative edge lines and the parallelism between any two relative edge lines, and the position information includes the position information of the edge lines of the display module, the edge lines include a first edge line A, a second edge line B, a third edge line C, and a fourth edge line D, wherein the first edge line A and the third edge line C are relatively parallel, the second edge line B and the fourth edge line D are relatively parallel, and the second edge line B is perpendicular to the first edge line A;
[0091] If the edge information satisfies a preset edge threshold, the display module is installed as the i-th display module; if the edge information does not satisfy the preset edge threshold, the display module is re-captured until the edge information of the display module satisfies the preset edge threshold, and the display module satisfying the preset edge threshold is installed as the i-th display module; wherein the edge threshold includes a distance threshold between any two opposite sides and a parallelism threshold between any two opposite sides;
[0092] The i-th display module is installed based on the position information of the i-th display module and the position information of the i-1-th display module; specifically:
[0093] Based on the position information of the second edge line B of the i-1th display module and the position information of the third edge line C of the i-1th display module next to the position to be installed, the position of the i-th display module is adjusted so that the first edge line A of the i-th display module is located on the extension line of the third edge line C of the i-1th display module; based on the position information of the second edge line B of the i-1th display module, the position of the i-th display module is adjusted so that the second edge line B of the i-th display module is located on the extension line of the second edge line B of the i-1th display module, and then the i-th display module is fixed through the first mounting hole 24 and the second mounting hole 33;
[0094] In other examples, the second edge line B may be aligned with the second direction positioning line A2 first, and then the first edge line A may be aligned with the first direction positioning line A1.
[0095] It is understandable that when the i-th display module is installed along the extending direction perpendicular to the first sub-bracket 31 , the installation should be performed with the corresponding edge of the only display module installed previously below or above it as the positioning reference line.
[0096] In one embodiment of the present disclosure, it is also possible to perform the inspection at the display panel stage instead of inspecting whether the display module is qualified.
[0097] In one embodiment of the present disclosure, the above-mentioned position information, edge parameters, etc. can be detected by a camera.
[0098] In one embodiment of the present disclosure, if the angle between the first edge line A and the first direction positioning line A1 is less than 0.02°, it can be considered that the two are parallel, and the same applies to other parallel requirements in the present disclosure.
[0099] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.
[0100] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practice. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.
Claims
1. A display module, characterized in that: include: Display panel; A heat dissipation structure, arranged on the backlight side of the display panel; The heat dissipation structure comprises a first sub-heat dissipation structure and a second sub-heat dissipation structure, the first sub-heat dissipation structure comprises a connection area and a fixing area surrounding the connection area, the first sub-heat dissipation structure is connected to the display panel, and the second sub-heat dissipation structure is arranged on a side of the first sub-heat dissipation structure away from the display panel and connected to the connection area of the first sub-heat dissipation structure; the fixing area of the first sub-heat dissipation structure close to a side of the second sub-heat dissipation structure is used to connect a splicing bracket; The orthographic projection of the first sub-heat dissipation structure on the second sub-heat dissipation structure is located within the orthographic projection of the display panel on the second sub-heat dissipation structure, and the plane spacing between at least one side edge of the first sub-heat dissipation structure and the edge of the display panel is not less than 0.5 mm.
2. The display module according to claim 1, characterized in that: A clamping structure is disposed on a side of the second sub-heat dissipation structure away from the display panel.
3. The display module according to claim 2, characterized in that: The material of the heat dissipation structure is metal, and the material of the clamping structure is stainless steel.
4. The display module according to claim 1, characterized in that: In the fixed area, the first sub-heat dissipation structure has a plurality of first mounting holes on a side away from the display panel; the flatness of the first sub-heat dissipation structure on a side close to the display panel is less than 40 μm, and the flatness of the fixed area on a side close to the second sub-heat dissipation structure is less than 40 μm.
5. The display module according to any one of claims 1 to 4, characterized in that: The second sub-heat dissipation structure has a plurality of heat dissipation grooves.
6. A splicing bracket, characterized in that: include: at least one first sub-bracket; at least one second sub-bracket group; Each group of the second sub-brackets includes two second sub-brackets; a plurality of the second sub-brackets are sequentially arranged on the first sub-bracket along the extension direction of the first sub-bracket; the splicing bracket has at least one assembling area, and each of the assembling areas is used to set a display module; the splicing bracket has an installation reference line for positioning the display module, and the installation reference line includes a first direction positioning line and a second direction positioning line that are perpendicular to each other, and at least one of the first direction positioning line and the second direction positioning line is arranged on one of the second sub-bracket groups.
7. The splicing bracket according to claim 6, characterized in that: The first direction positioning line and the second direction positioning line are both arranged on one of the second sub-bracket groups, and the second sub-bracket group is one of the two second sub-bracket groups located at two ends of the first sub-bracket.
8. A splicing display device, characterized in that: include: At least one splicing bracket according to any one of claims 6-7; A display module according to any one of claims 1 to 5; The first sub-heat dissipation structure of the display module is arranged on the second sub-bracket of the second sub-bracket group and is connected and fixed by a fixing piece; the orthographic projection of the second sub-heat dissipation structure on the splicing bracket is located between the two second sub-brackets, and the plane spacing between the edge of the second sub-heat dissipation structure and the second sub-bracket is not less than 1 mm; at least along the arrangement direction of the multiple display modules, the plane spacing between the edge of the first sub-heat dissipation structure and the edge of the display module is not less than 0.5 mm.
9. A method for splicing a spliced display device according to claim 8, characterized in that: include: Detect the position information of the installation reference line on the splicing bracket; Install the first display module; Obtaining one of the display modules that has passed the inspection, detecting the position information of the display module, and installing the display module based on the position information of the display module and the position information of the installation reference line as the first display module; Install the i-th display module, obtain the i-th display module that has passed the inspection, detect the position information of the i-th display module, and install the i-th display module based on the position information of the i-th display module and the position information of the display module next to the installation position, wherein i is any positive integer from 2 to M, and M is the total number of display modules.
10. The splicing method of splicing display devices according to claim 9, characterized in that: The display module is installed based on the position information of the display module and the position information of the installation reference line as the first display module, The process includes: After making the display module flush with the first direction positioning line and the display module flush with the second direction positioning line, the display module is installed as the first display module; Alternatively, after the display module is aligned with the first direction positioning line and the display module is aligned with the second direction positioning line, based on the distance difference between the second direction positioning line and the bottom surface of the splicing bracket, the position of the display module is adjusted along the extension direction of the first direction positioning line so that the display module is aligned with the bottom surface of the splicing bracket, and the display module is installed as the first display module.