Spliced screen

Abstract

The utility model relates to the technical field of display equipment, and discloses a splicing screen which comprises a back plate and at least two lamp plates. The back plate comprises at least two bearing parts, each bearing part comprises a first side surface and a second side surface which are deviated from each other, and the first side surface of each bearing part is provided with at least two first alignment marks; the at least two lamp panels are in one-to-one correspondence with the at least two bearing parts, each lamp panel is provided with a light-emitting side and a non-light-emitting side which are deviated from each other, and each light-emitting side is provided with a plurality of light-emitting units used for displaying pictures; the non-light-emitting side of the lamp panel is provided with at least two second alignment marks, the at least two second alignment marks correspond to the at least two first alignment marks in a one-to-one mode, and the second alignment marks are used for being matched with the corresponding first alignment marks in a visual alignment mode. The non-light-emitting sides of the lamp panels are bonded to the sides, provided with the first alignment marks, of the bearing parts, and a splicing gap is formed between every two adjacent lamp panels. According to the spliced screen, the splicing precision between the lamp panels can be improved, and poor display is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment, in particular to a spliced ​​screen. Background Art

[0002] The micro LED light board can have multiple micro LEDs (Mini-LED or Micro-LED), and the micro LED light board can be used as a backlight module or directly display images. In a large-size display device, at least two light boards need to be spliced ​​and set.

[0003] When multiple spliced ​​micro LED light boards are used as a backlight module, the arrangement gap between the micro LEDs on each light board is relatively large, the light emitting side of the light board has film layers such as a diffusion plate and an optical film material, and the backlight module provides a surface light source. The width of the designed splicing gap between two adjacent light boards is relatively large, and the accuracy requirement of the splicing gap width during actual splicing is not strict.

[0004] If the multiple spliced ​​micro LED light boards are used as devices for directly displaying images, the micro LEDs on the light boards are directly used as pixel units, the arrangement gap of the micro LEDs on each light board is small, the width of the designed splicing gap between two adjacent light boards is small, and the precision of the splicing gap width needs to be strictly required during actual splicing. If the error between the splicing gap width between the light boards during actual splicing is large and the designed width is large, it will cause poor display of the display device.

[0005] Specifically, if the actual width of the splicing gap is significantly larger than the designed width, obvious dark lines will appear when the display device displays the picture, affecting the display effect; if the actual width of the splicing gap is significantly smaller than the designed width, the two adjacent lamp boards may easily come into contact during the heat expansion of the lamp board or the transportation of the display device, which may cause damage to the lamp board or the lamp boards may be squeezed and tilted against each other, which may cause poor display of the picture on the display device.

[0006] Therefore, when the light board is directly used as a device for displaying images, how to improve the splicing accuracy of the light board in a large-size display device is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0007] The utility model provides a splicing screen, which can improve the splicing accuracy between light panels and avoid poor display.

[0008] In order to achieve the above object, the utility model provides the following technical solutions:

[0009] A spliced ​​screen includes a back panel and at least two light panels;

[0010] The back plate comprises at least two bearing parts, the bearing parts comprise a first side surface and a second side surface which are separated from each other, and the first side surface of the bearing parts has at least two first alignment marks;

[0011] The at least two light boards correspond to the at least two bearing parts one by one, the light boards have a light emitting side and a non-light emitting side that are separated from each other, and the light emitting side has a plurality of light emitting units for displaying images;

[0012] The non-light-emitting side of the lamp panel has at least two second alignment marks, the at least two second alignment marks correspond one-to-one to the at least two first alignment marks, and the second alignment marks are used for visual alignment with the corresponding first alignment marks;

[0013] The non-light emitting side of the lamp board is bonded to the side of the bearing portion having the first alignment mark, and a splicing gap is provided between two adjacent lamp boards.

[0014] Optionally, the light board includes a substrate, a plurality of light-emitting units and a packaging structure;

[0015] The substrate is a glass substrate;

[0016] The plurality of light emitting units are located on one side of the substrate;

[0017] The packaging structure is located on a side of the substrate having the light-emitting unit, the packaging structure wraps the light-emitting unit to protect the light-emitting unit, and the packaging structure is made of a transparent material that allows light to pass through;

[0018] The second alignment mark is arranged on the substrate, and a side of the substrate facing away from the light-emitting unit is bonded to the carrying portion.

[0019] Optionally, a joint gap between two adjacent light panels is filled with a filler portion, and the filler portion is used for buffering and shading.

[0020] Optionally, the back panel is integrally formed.

[0021] Optionally, the edge of the first side surface of the bearing portion has an annular glue-dispensing boss, the glue-dispensing boss has a glue-dispensing surface, and the glue-dispensing surface is bonded to the edge of the non-light-emitting side of the lamp panel by optical glue;

[0022] The glue dispensing bosses are connected between two adjacent bearing parts, and the glue dispensing surfaces of the glue dispensing bosses are flush.

[0023] Optionally, a first side surface of the bearing portion contacts a non-light emitting side of the light board, and the first side surface is used to support the light board.

[0024] Optionally, the light board further comprises at least one connecting wire, the connecting wire is connected to the non-light emitting side of the light board, a space is formed between the first side surface of the bearing portion and the glue dispensing surface, and the connecting wire is arranged in the space;

[0025] The bearing part has at least one hollow area, and the hollow area passes through the first side surface and the second side surface of the bearing part. The connecting wire of the lamp board passes through the hollow area to the side of the bearing part away from the lamp board.

[0026] Optionally, the spliced ​​screen further includes at least one driving board, the driving board corresponds to at least one light board, the driving board is fixed to a side of the backplane away from the light board, the driving board is connected to a connecting line of the corresponding light board, and two adjacent driving boards are connected via a flexible circuit board;

[0027] The back plate has a first supporting boss in an area opposite to the driving board, and the first supporting boss is used to support the driving board.

[0028] Optionally, the first supporting boss has at least two positioning columns and at least two first connecting portions on a side facing away from the lamp board;

[0029] The driver board has at least two positioning holes and at least two second connecting parts, the positioning holes and the second connecting parts are arranged near the edge of the driver board, the at least two positioning holes correspond to the at least two positioning posts one by one, and the at least two second connecting parts correspond to the at least two first connecting parts one by one;

[0030] The positioning column is inserted into the corresponding positioning hole, and the driving board is fixed on the back plate through the second connecting part cooperating with the corresponding first connecting part.

[0031] Optionally, the back plate has a plurality of reinforcing ribs on a side facing away from the light board;

[0032] The reinforcing rib is located between any two adjacent driving boards;

[0033] The reinforcing rib has a wire passing groove, and the flexible circuit board connected between two adjacent driving boards passes the wire through the wire passing groove of the reinforcing rib.

[0034] The utility model provides a splicing screen, in which, since the first side surface of the bearing part of the back plate has at least two first alignment marks, and the non-light emitting side of the lamp board has at least two second alignment marks corresponding to the first alignment marks, during the assembly of the lamp board to the back plate, glue can be dispensed on the side of the bearing part of the back plate having the first alignment mark, and then the second alignment mark on the lamp board is aligned with the first alignment mark on the corresponding bearing part through CCD visual positioning, and then the lamp board is aligned and bonded to the bearing part. In the above-mentioned splicing screen, compared with the related art, the lamp board can be aligned with the corresponding bearing part through CCD visual positioning, and this positioning method can achieve higher positioning accuracy, and can ensure that the splicing gap between the two lamp boards is within the reasonable design range, thereby improving the splicing accuracy between the lamp boards and avoiding poor display. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic plan view of one side of a back plate provided in an embodiment of the utility model;

[0036] Figure 2 for Figure 1 A magnified image of the middle A area;

[0037] Figure 3 This is a schematic diagram of assembling a light panel and a back panel provided in an embodiment of the utility model;

[0038] Figure 4 This is a schematic diagram of the structure of a light board provided in an embodiment of the utility model;

[0039] Figure 5 It is a structural schematic diagram of a spliced ​​screen provided in an embodiment of the utility model;

[0040] Figure 6 for Figure 5 Enlarged view of area B;

[0041] Figure 7 for Figure 1 The cross-sectional view at aa in the middle;

[0042] Figure 8 for Figure 7 Enlarged view of the middle C area;

[0043] Fig. 9 An exploded view of a spliced ​​screen provided in an embodiment of the utility model;

[0044] Fig.10 It is a schematic plan view of the other side of a back plate provided in an embodiment of the utility model;

[0045] Fig.11 for Fig.10 Enlarged view of the middle F area;

[0046] Fig.12 This is a schematic diagram of assembling a backplane and a driver board provided in an embodiment of the utility model;

[0047] Fig.13 for Fig.12 Enlarged view of the middle G region;

[0048] Fig.14 for Fig. 9 Enlarged view of area D in the middle;

[0049] Fig.15 for Fig. 9 Magnified view of area E in the middle.

[0050] icon:

[0051] 1-back plate; 11-bearing part; 111-first side; 1111-first alignment mark; 112-second side; 1121-first supporting boss; 1122-positioning column; 1123-connecting column; 1124-avoidance groove; 1125-second supporting boss; 1126-reinforcing rib; 1127-wire groove; 113-glue dispensing boss; 1131-glue dispensing surface; 114-hollow area; 115-first connecting hole; 2-lamp board; 21-substrate; 22-light-emitting unit; 23-packaging structure; 3-driver board; 31-positioning hole; 32-connecting through hole; 4-adapter board; 41-second connecting hole. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] In the related art, when multiple light panels are spliced ​​together and used as a backlight module, the light panels can be installed on the back panel through a support frame, or the light panels can be positioned by positioning holes and positioning columns, and then fixed with screws. The positioning accuracy of these two methods is not high, which makes the splicing accuracy of the light panels not high.

[0054] If multiple light panels are spliced ​​together as devices for directly displaying images, installing the light panels in the above manner cannot achieve the required splicing accuracy, and poor display effects may occur due to the splicing gaps between the light panels being too large or too small.

[0055] Therefore, when the light board is used as a device for directly displaying images, how to improve the splicing accuracy of the light board is a technical problem that technical personnel in this field need to solve.

[0056] In order to solve the above technical problems, the utility model provides a splicing screen, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a back panel 1 and at least two light panels 2;

[0057] The back plate 1 includes at least two carrying parts 11, the carrying part 11 includes a first side surface 111 and a second side surface 112 which are separated from each other, and the first side surface 111 of the carrying part 11 has at least two first alignment marks 1111;

[0058] At least two light boards 2 correspond to at least two bearing parts 11 one by one, and the light boards 2 have a light emitting side and a non-light emitting side that are separated from each other, and the light emitting side has a plurality of light emitting units 22 for displaying images;

[0059] The non-light-emitting side of the light board 2 has at least two second alignment marks, and the at least two second alignment marks correspond one-to-one to the at least two first alignment marks 1111, and the second alignment marks are used for visual alignment with the corresponding first alignment marks 1111;

[0060] The non-light emitting side of the lamp board 2 is bonded to the side of the bearing portion 11 having the first alignment mark 1111 , and a splicing gap is provided between two adjacent lamp boards 2 .

[0061] In the spliced ​​screen provided by the embodiment of the utility model, since the first side surface 111 of the bearing part 11 of the back panel 1 has at least two first alignment marks 1111, and the non-light emitting side of the light board 2 has at least two second alignment marks corresponding to the first alignment marks 1111, during the assembly of the light board 2 to the back panel 1, glue can be first applied to the side of the bearing part 11 of the back panel 1 having the first alignment mark 1111, and then the second alignment mark on the light board 2 is aligned with the first alignment mark 1111 on the corresponding bearing part 11 through CCD visual positioning, and then the light board 2 is aligned and bonded to the bearing part 11. In the above-mentioned spliced ​​screen, compared with the related art, the light board 2 can be aligned with the corresponding bearing part 11 through CCD visual positioning, and this positioning method can achieve higher positioning accuracy, and can ensure that the splicing gap between the two light boards 2 is within the reasonable design range, thereby improving the splicing accuracy between the light boards 2 and avoiding poor display.

[0062] Among them, in order to improve the splicing accuracy of the light board 2, when making the two first alignment marks 1111 on the light board 2, the accuracy of the spacing distance between the two first alignment marks 1111 needs to be within a preset range, and the accuracy of the spacing distance between the corresponding two second alignment marks also needs to be within the preset range to avoid affecting the alignment accuracy between the light board 2 and the back panel 1.

[0063] The spliced ​​screen provided by the utility model can be used to directly display images. In the spliced ​​screen, the back panel 1 can have multiple bearing parts 11, and the multiple bearing parts 11 are distributed in an array, and then multiple light boards 2 can be assembled on the back panel 1 in an array distribution. In the spliced ​​screen, the number of light boards 2 is not limited here and is determined according to actual conditions.

[0064] Specifically, Figure 2 As shown, the shape of the light board 2 can be rectangular or square, etc., which is not limited here and depends on the actual situation. Accordingly, the shape of each bearing portion 11 on the back plate 1 is the same as the shape of the light board 2.

[0065] Specifically, Figure 3 As shown, the first alignment mark 1111 may be a recessed mark on the first side surface 111 of the carrier 11. The shape of the first alignment mark 1111 may be a cross or other shapes, which are not limited here. The shape of the second alignment mark may be the same as or different from the shape of the first alignment mark 1111.

[0066] The position of the first alignment mark 1111 on the carrier 11 is not limited here and is determined according to actual conditions. Figure 2 As shown, the carrying portion 11 may have two first alignment marks 1111 , and the two first alignment marks 1111 may be arranged along a diagonal line of the carrying portion 11 .

[0067] In the embodiment of the utility model, Figure 4 As shown, the light board 2 may include a substrate 21, a plurality of light-emitting units 22 and a packaging structure 23;

[0068] Among them, the substrate 21 can be a glass substrate, a plurality of light-emitting units 22 are located on one side of the substrate 21, the packaging structure 23 is located on the side of the substrate 21 having the light-emitting units 22, the packaging structure 23 wraps the light-emitting units 22, and the packaging structure 23 is a transparent material that allows light to pass through. The second alignment mark is set on the substrate 21, and the side of the substrate 21 facing away from the light-emitting unit 22 is bonded to the carrier 11.

[0069] The substrate 21 of the above-mentioned lamp board 2 can be a glass substrate. Since the glass substrate is relatively fragile, if the glass substrates of two adjacent lamp boards 2 come into contact with each other, the glass substrates are likely to break, resulting in poor display of the lamp board 2. Therefore, such lamp boards 2 need to be spliced ​​with high splicing accuracy to ensure that the width of the splicing gap of the lamp board 2 is within a suitable range to avoid thermal expansion of the glass substrate or contact between the lamp boards 2 during the transportation of the display device.

[0070] Optionally, the substrate 21 of the light board 2 can also be a FR4 substrate and a BT substrate. Although the FR4 substrate and the BT substrate are not easily damaged, if the substrates 21 of two adjacent light boards 2 expand due to heat or contact during the transportation of the display device, the light board 2 is easily squeezed, causing the position of the light board 2 to move, resulting in poor display. Therefore, the FR4 substrate and the BT substrate also need to have a high splicing accuracy when splicing.

[0071] Specifically, the specific type of the substrate 21 of the light board 2 is not limited here and depends on the actual situation.

[0072] The packaging structure 23 is wrapped around the outside of the light emitting unit 22 to protect the light emitting unit 22 from being damaged.

[0073] Specifically, the light-emitting unit 22 may be a micro light-emitting diode, such as Mini-LED or Micro-LED, which is not limited here and depends on actual conditions.

[0074] Specifically, the multiple light-emitting units 22 on the light board 2 can be distributed in an array, and three adjacent light-emitting units 22 can be a red LED, a green LED and a blue LED respectively. Three adjacent light-emitting units 22 of different colors can form a pixel unit for realizing color display of the light board 2.

[0075] In the embodiment of the utility model, the joint gap between two adjacent light panels 2 can be filled with a seam filling part, which is used for buffering and shading. By filling the seam filling part in the joint gap, seamless jointing between the light panels 2 can be achieved. The seam filling part can also play a role of buffering and shading, thereby preventing collision between two adjacent light panels 2 and avoiding light crosstalk between two adjacent light panels 2.

[0076] Specifically, the material of the seam repairing part can be black silicone or other materials, which are not limited here and depend on the actual situation.

[0077] In the embodiment of the utility model, the back plate 1 can be integrally formed, which can reduce the cost of making the mold and the cost of assembling the back plate 1.

[0078] Optionally, if the size of the spliced ​​screen is too large, the back panel 1 may not be integrally formed for the convenience of transportation, depending on the actual situation.

[0079] Specifically, the back plate 1 may be a metal back plate 1 or a plastic back plate 1, and this is not a limitation and may be determined according to actual conditions.

[0080] In the embodiment of the utility model, Figure 2 and Figure 3 As shown, the edge of the first side surface 111 of the bearing part 11 of the back panel 1 may have a circle of glue-dispensing bosses 113, and the glue-dispensing bosses 113 have a glue-dispensing surface 1131, and the glue-dispensing surface 1131 is bonded to the non-light-emitting side of the lamp panel 2 by optical glue; the glue-dispensing bosses 113 are connected between two adjacent bearing parts 11, and the glue-dispensing surfaces 1131 of each glue-dispensing boss 113 are flush.

[0081] Specifically, the back panel 1 is integrally formed, and a circle of glue-dispensing bosses 113 are provided on the edge of the first side surface 111 of the bearing portion 11 of the back panel 1, so that the light board 2 can be directly bonded to the glue-dispensing surface 1131 of the glue-dispensing bosses 113. Compared with the related art, the support frame used for installing the light board 2 is omitted, which can reduce components, save costs, and reduce the thickness of the spliced ​​screen.

[0082] The glue-dispensing bosses 113 are connected between two adjacent bearing parts 11. After the light board 2 is assembled with the bearing part 11, the edge of the light board 2 can be supported. The glue-dispensing surfaces 1131 on each glue-dispensing boss 113 are flush, which can ensure that after each light board 2 is assembled on the back panel 1, the light-emitting surfaces of each light board 2 are on the same plane, thereby ensuring the display effect. Figure 5 and Figure 6 As shown, it is a schematic diagram of the spliced ​​screen light panels 2 being almost completed, and the light emitting surfaces of each light panel 2 are in the same plane to ensure the display effect.

[0083] In the embodiment of the utility model, Figure 7 and Figure 8 As shown, the first side surface 111 of the bearing portion 11 of the back plate 1 can contact the non-light-emitting side of the lamp board 2, and the first side surface 111 is used to support the lamp board 2. The first side surface 111 of the bearing portion 11 directly supports the lamp board 2, which can prevent the glass-based lamp board 2 from being broken due to extrusion and collision.

[0084] Specifically, the lamp board 2 may also include at least one heat sink, which may be adhered to the side of the lamp board 2 facing the back panel 1. The heat sink may quickly transfer the heat from the lamp board 2 to the back panel 1, thereby accelerating the heat dissipation of the lamp board 2 and preventing damage to the lamp board 2.

[0085] The space between the first side surface 111 of the bearing part 11 and the glue-dispensing surface 1131 can be used as a space for accommodating the heat sink, and the first side surface 111 of the bearing part 11 can contact the heat sink, thereby achieving support for the light board 2 by the first side surface 111 of the bearing part 11, thereby preventing the glass-based light board 2 from being broken.

[0086] In an embodiment of the utility model, the light board 2 also includes at least one connecting wire, which can be connected to the non-light-emitting side of the light board 2; a space is formed between the first side surface 111 of the bearing part 11 and the glue dispensing surface 1131, and the connecting wire is arranged in this space.

[0087] Specifically, a heat sink may not be provided on the path of the connecting wires on the side of the light board 2 toward the bearing part 11, so that space for the connecting wires to be routed can be provided between the first side surface 111 of the bearing part 11 and the glue dispensing surface 1131, thereby achieving reasonable wiring and reducing the thickness of the spliced ​​screen.

[0088] Specifically, one or more connecting wires may be provided on the light board 2. The connecting wires on the light board 2 are electrically connected to the multiple light-emitting units 22 on the light board 2, and the connecting wires can transmit light-emitting driving signals to the light-emitting units 22.

[0089] Specifically, the connection wire of the light panel may be an FFC flexible flat cable.

[0090] In the embodiment of the utility model, Figure 2 , Figure 3 and Figure 8 As shown, the carrier 11 may have at least one hollow area 114 , which passes through the first side 111 and the second side 112 of the carrier 11 ; the connecting line of the lamp board 2 passes through the hollow area 114 to the side of the carrier 11 away from the lamp board 2 .

[0091] Among them, the hollow area 114 on the bearing part 11 can be a hollow area 114, and the light board 2 can have multiple connecting lines. All the connecting lines on the light board 2 can pass through this hollow area 114 to the side of the bearing part 11 away from the light board 2; or, the bearing part 11 can have at least two hollow areas 114, and the multiple connecting lines on the light board 2 can pass through at least two hollow areas 114 to the side of the bearing part 11 away from the light board 2. Here, the hollow areas 114 and the connecting lines can correspond one to one, or they can not correspond one to one. There is no limitation here, and it depends on the actual situation.

[0092] In the embodiment of the utility model, Fig. 9As shown, the spliced ​​screen also includes at least one driving board 3, the driving board 3 corresponds to at least one light board 2, the driving board 3 is fixed to the side of the back plate 1 away from the light board 2, the driving board 3 is connected to the connecting line of the corresponding light board 2 on the side facing the back plate 1, and two adjacent driving boards 3 are connected through a flexible circuit board, and the driving board 3 can provide a light-emitting driving signal for the light board 2;

[0093] Among them, Fig.10 and Fig.11 As shown, the area of ​​the back plate 1 opposite to the driving board 3 may have a first supporting boss 1121 , and the first supporting boss 1121 may be used to support the driving board 3 .

[0094] In the above-mentioned spliced ​​screen, the light board 2 and the driver board 3 are arranged on both sides of the integrated back panel 1, and the first supporting boss 1121 on the back panel 1 can support the driver board 3. No other supporting parts may be arranged between the back panel 1 and the driver board 3, which can reduce the thickness of the spliced ​​screen and reduce the components in the spliced ​​screen, thereby saving the manufacturing cost and assembly cost. The manufacturing cost here may include the cost of the mold, the cost of the manufacturing materials, and the labor cost, etc.

[0095] In the embodiment of the utility model, the driving board 3 in the spliced ​​screen can be connected to the light boards 2 in a one-to-one correspondence; or, one driving board 3 can also be connected to at least two light boards 2 in a corresponding manner.

[0096] For example, Fig.12 and Fig.13 As shown, one driving board 3 corresponds to four adjacent bearing parts 11, that is, one driving board 3 can be connected to four lamp boards 2 and provide light-emitting driving signals for the four lamp boards 2. The number of the driving boards 3 is not limited and depends on the actual situation.

[0097] Specifically, the driving board 3 may be a HUB board.

[0098] In the embodiment of the utility model, Fig.11 and 13 As shown, the first supporting boss 1121 may have at least two positioning posts 1122 and at least two first connecting portions on one side facing away from the light board 2;

[0099] The driver board 3 may have at least two positioning holes 31 and at least two second connection parts. The positioning holes 1122 and the second connection parts are arranged near the edge of the driver board 3. The at least two positioning holes 31 correspond to the at least two positioning posts 1122 one by one, and the at least two second connection parts correspond to the at least two first connection parts one by one.

[0100] The positioning column 1122 is inserted into the corresponding positioning hole 31 to position the driving board 3; the driving board 3 can be fixed on the backplane 1 through the second connecting portion cooperating with the corresponding first connecting portion.

[0101] Specifically, the first connecting part may be a connecting column 1123 having a threaded hole, and the second connecting part may be a connecting through hole 32. The drive board 3 may be fixed to the backplane 1 by screws passing through the connecting through hole 32 and threadedly engaging with the threaded hole on the connecting column 1123.

[0102] During the assembly of the driver board 3, the driver board 3 can first be positioned on the backplane 1 by engaging the positioning hole 31 on the driver board 3 with the positioning column 1122 on the backplane 1; then screws are passed through the through holes on the driver board 3 and engaged with the threaded holes on the connecting columns 1123 to tighten and fix the driver board 3 on the backplane 1.

[0103] Specifically, the first supporting boss 1121 can be set in the area corresponding to the back plate 1 and the driving board 3 and located between any two adjacent bearing parts 11. The positioning column 1122 and the connecting column 1123 on the first supporting boss 1121 can support the driving board 3.

[0104] For example, Fig.12 As shown, one driver board 3 corresponds to four adjacent bearing parts 11 of the backplane 1, and the first supporting boss 1121 is arranged around the four bearing parts 11 and is located between two adjacent bearing parts 11. The positioning column 1122 and the connecting column 1123 can be arranged between two adjacent bearing parts 11, and two positioning columns 1122 and four connecting columns 1123 can be arranged on the first supporting boss 1121, and the four connecting columns 1123 can be evenly distributed at the edge of the area where the backplane 1 and the driver board 3 are opposite.

[0105] Correspondingly, the driver board 3 has positioning holes 21 corresponding to the two positioning columns 1122 and connecting through holes 32 corresponding to the four connecting columns 1123. The four connecting columns 1123 can be evenly distributed along the edge of the driver board 3 to facilitate the fixation of the driver board.

[0106] The number of the positioning posts 1122 , the connecting posts 1123 , the positioning holes 31 and the connecting through holes 32 is not limited here and is determined according to actual conditions.

[0107] In the embodiment of the utility model, Fig.14As shown, the above-mentioned spliced ​​screen may further include at least two adapter plates 4, at least two adapter plates 4 correspond to at least two light boards 2 one by one, the adapter plates 4 may be located between the bearing portion 11 and the driving board 3, the adapter plates 4 are connected to the connecting wires on the corresponding light boards 2, and the driving board 3 is connected to the connecting wires of the corresponding light boards 2 through the adapter plates 4. The driving board 3 provides the light board 2 with a light-emitting driving signal through the adapter plates 4.

[0108] For example, Fig.14 As shown, the light board 2 may have four connecting wires 24 , and the four connecting wires 24 are connected to the adapter board 4 , and the adapter board 4 may be connected to the driving board 3 corresponding to the light board 2 .

[0109] Specifically, the bearing portion 11 may have at least two first connecting holes 115, and the adapter plate 4 may have at least two second connecting holes 41. The at least two first connecting holes 115 correspond one-to-one to the at least two second connecting holes 41. The first connecting hole 115 may be a threaded hole, and the second connecting hole 41 may be a through hole. The adapter plate 4 can be fixed by passing a screw through the second connecting hole 41 and threading it with the first connecting hole 115.

[0110] Specifically, Fig.15 As shown, the second side surface 112 of the bearing portion 11 may have at least one avoidance groove 1124, and the at least one avoidance groove 1124 corresponds to at least one connecting line of the light board 2. On the side of the bearing portion 11 away from the light board 2, the connecting line of the light board 2 may be routed at the corresponding avoidance groove 1124, providing routing space for the connecting line of the light board 2.

[0111] Specifically, Fig.15 As shown, the second side surface 112 of the bearing portion 11 may also have an annular second supporting boss 1125, and the edge of the adapter plate 4 can be placed on the second supporting boss 1125. The second supporting boss 1125 supports the adapter plate 4 and can provide a storage space for the adapter plate 4. There is no need to set up other supporting parts, which can reduce the parts that need to be assembled, save production costs and assembly costs, and can reduce the thickness of the spliced ​​screen.

[0112] In an embodiment of the utility model, the above-mentioned spliced ​​screen may further include a master control module, which provides image display signals to each driver board 3, and the driver board 3 provides light-emitting drive signals to the corresponding light board 2, so as to realize the spliced ​​screen displaying image pictures.

[0113] In the embodiment of the utility model, Fig.15 As shown, the side of the back plate 1 away from the light board 2 has a plurality of reinforcing ribs 1126, which can strengthen the strength of the back plate 1. The reinforcing ribs 1126 can be located between any two adjacent driver boards 3, which can avoid the influence of the reinforcing ribs 1126 on the position of the driver boards 3;

[0114] Among them, the reinforcing rib 1126 can have a wire groove 1127, and the flexible circuit board connected between two adjacent driving boards 3 can pass the wires through the wire groove 1127 of the reinforcing rib 1126, which can provide routing space for the flexible circuit board and facilitate the connection between the driving boards 3.

[0115] For example, Fig. 9 and Fig.10 As shown, the lamp boards 2 are distributed in an array, the bearing parts 11 in the back panel 1 are distributed in an array, and the driving boards 3 are also distributed in an array, and one driving board 3 corresponds to four adjacent lamp boards 2 .

[0116] In which, along the row direction of the driver boards 3, two adjacent driver boards 3 are connected by a flexible circuit board, and there is a reinforcing rib 1126 between the two adjacent driver boards 3, and the flexible circuit board is routed through the wire groove 1127 on the reinforcing rib 1126;

[0117] Along the column direction of the driver boards 3 , two adjacent driver boards 3 are connected via a flexible circuit board. A reinforcing rib 1126 is provided between the two adjacent driver boards 3 , and the flexible circuit board is routed via a wire slot 1127 on the reinforcing rib 1126 .

[0118] like Fig. 9 The figure shows a specific implementation of a splicing screen provided in an embodiment of the utility model. The assembly process of the splicing screen in the figure can be specifically as follows:

[0119] First, the back plate 1 is placed on a positioning jig, and a robot is used to dispense glue along a dispensing surface 1131 on the back plate 1 in a full circle;

[0120] Then, a light board 2 is taken by the robot, and the second alignment mark on the light board 2 is aligned with the first alignment mark 1111 by CCD visual positioning, and the light board 2 is pressed by the robot to bond the first light board 2 to the back plate 1;

[0121] Next, repeat the above steps of laminating the light boards 2. During the laminating process of the light boards 2, the step difference of each light board 2 along the thickness direction of the back plate 1 needs to be adjusted and leveled through CCD visual positioning until the last light board 2 is laminarized.

[0122] Then, flip the assembled components and face the back panel 1 away from the light panel 2, assemble the adapter board 4 and the driver board 3, etc. The adapter board 4 can be connected to the back panel 1 by screws, and the driver board 3 can first be positioned on the back panel 1 by the positioning column 1122 and the positioning hole 31, and then the driver board 3 can be fixed to the back panel 1 by screws.

[0123] Finally, the assembly steps of the adapter board 4 and the driver board 3 are repeated until all boards are assembled.

[0124] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A splicing screen, characterized in that: including a back panel and at least two light panels; The back plate comprises at least two bearing parts, the bearing parts comprise a first side surface and a second side surface which are separated from each other, and the first side surface of the bearing parts has at least two first alignment marks; The at least two light boards correspond to the at least two bearing parts one by one, the light boards have a light emitting side and a non-light emitting side that are separated from each other, and the light emitting side has a plurality of light emitting units for displaying images; The non-light-emitting side of the lamp panel has at least two second alignment marks, the at least two second alignment marks correspond one-to-one to the at least two first alignment marks, and the second alignment marks are used for visual alignment with the corresponding first alignment marks; The non-light emitting side of the lamp board is bonded to the side of the bearing portion having the first alignment mark, and a splicing gap is provided between two adjacent lamp boards.

2. The splicing screen according to claim 1, characterized in that: The light board comprises a substrate, a plurality of light-emitting units and a packaging structure; The substrate is a glass substrate; The plurality of light emitting units are located on one side of the substrate; The packaging structure is located on a side of the substrate having the light-emitting unit, the packaging structure wraps the light-emitting unit to protect the light-emitting unit, and the packaging structure is made of a transparent material that allows light to pass through; The second alignment mark is arranged on the substrate, and a side of the substrate facing away from the light-emitting unit is bonded to the carrying portion.

3. The splicing screen according to claim 1, characterized in that: The joint gap between two adjacent lamp panels is filled with a seam filling portion, and the seam filling portion is used for buffering and shading.

4. The splicing screen according to any one of claims 1 to 3, characterized in that: The back plate is integrally formed.

5. The splicing screen according to claim 4, characterized in that: The first side surface of the bearing portion has an annular glue-dispensing boss, the glue-dispensing boss has a glue-dispensing surface, and the glue-dispensing surface is bonded to the edge of the non-light-emitting side of the lamp panel by optical glue; The glue dispensing bosses are connected between two adjacent bearing parts, and the glue dispensing surfaces of the glue dispensing bosses are flush.

6. The splicing screen according to claim 5, characterized in that: The first side surface of the bearing portion contacts the non-light emitting side of the lamp board, and the first side surface is used for supporting the lamp board.

7. The splicing screen according to claim 6, characterized in that: The light board further includes at least one connecting wire, the connecting wire is connected to the non-light emitting side of the light board, a space is formed between the first side surface of the bearing portion and the glue dispensing surface, and the connecting wire is arranged in the space; The bearing part has at least one hollow area, and the hollow area passes through the first side surface and the second side surface of the bearing part. The connecting wire of the lamp board passes through the hollow area to the side of the bearing part away from the lamp board.

8. The spliced ​​screen according to claim 7, characterized in that: The spliced ​​screen also includes at least one driving board, the driving board corresponds to at least one light board, the driving board is fixed to a side of the backplane away from the light board, the driving board is connected to a connecting line of the corresponding light board, and two adjacent driving boards are connected via a flexible circuit board; The back plate has a first supporting boss in an area opposite to the driving board, and the first supporting boss is used to support the driving board.

9. The splicing screen according to claim 8, characterized in that: The first supporting boss has at least two positioning posts and at least two first connecting portions on a side facing away from the lamp board; The driver board has at least two positioning holes and at least two second connecting parts, the positioning holes and the second connecting parts are arranged near the edge of the driver board, the at least two positioning holes correspond to the at least two positioning posts one by one, and the at least two second connecting parts correspond to the at least two first connecting parts one by one; The positioning column is inserted into the corresponding positioning hole, and the driving board is fixed on the back plate through the second connecting part cooperating with the corresponding first connecting part.

10. The spliced ​​screen according to claim 8, characterized in that: The back plate has a plurality of reinforcing ribs on one side away from the light board; The reinforcing rib is located between any two adjacent driving boards; The reinforcing rib has a wire passing groove, and the flexible circuit board connected between two adjacent driving boards passes the wire through the wire passing groove of the reinforcing rib.

Images