Sub-display panel assembly and spliced ​​display device

Abstract

The present disclosure provides a sub-display panel assembly and a spliced ​​display device, wherein the sub-display panel assembly includes: a display substrate; a fixed frame, including: a bottom plate and at least one position adjustment structure, the bottom plate is arranged opposite to the display substrate, the position adjustment structure penetrates the bottom plate and is connected to the display substrate, and the position adjustment structure is configured to adjust the relative position between the display substrate and the bottom plate. The technical solution of the present disclosure can effectively improve the assembly efficiency of the spliced ​​display device and reduce the probability of damage to the display substrate.

Description

Technical Field

[0001] The present invention relates to the field of display, and in particular to a sub-display panel assembly and a spliced ​​display device. Background Art

[0002] A large display screen is usually composed of a plurality of sub-display panel components arranged and spliced ​​in a matrix, and the playback images of each sub-display panel component are combined to form the overall image of the large display screen.

[0003] The assembly process of the spliced ​​display device is as follows: first, the display substrate and the fixed frame are assembled to obtain a sub-display panel assembly; then multiple sub-display panel assemblies are spliced ​​and fixed on the carrying box. In actual applications, it is found that in the process of splicing and fixing multiple sub-display panel assemblies on the carrying box, it is often necessary to adjust the spacing between some adjacent display substrates and the flatness of the plane where each display substrate is located. The existing adjustment process is as follows: first, the assembled sub-display panel assembly is removed from the carrying box, and then the display substrate is separated from the fixed frame, and then the relative position between the display substrate and the fixed frame is adjusted according to the adjustment requirements, and then the display substrate and the fixed frame are reassembled to obtain the sub-display panel assembly, and finally the adjusted sub-display panel assembly is fixed on the carrying box.

[0004] During the above adjustment process, the display substrate and the fixed frame need to be disassembled and reassembled, which will lead to low assembly efficiency of the spliced ​​display device and increase the probability of damage to the display substrate. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a sub-display panel assembly and a spliced ​​display device.

[0006] In a first aspect, an embodiment of the present disclosure provides a sub-display panel assembly, including:

[0007] Display substrate;

[0008] The fixed frame comprises: a bottom plate and at least one position adjustment structure, wherein the bottom plate is arranged opposite to the display substrate, the position adjustment structure penetrates the bottom plate and is connected to the display substrate, and the position adjustment structure is configured to adjust the relative position between the display substrate and the bottom plate.

[0009] In some embodiments, the display substrate includes: a carrier substrate, a plurality of light-emitting elements, and at least one first connecting member;

[0010] The light emitting element is fixed to a side of the carrier substrate away from the bottom plate, and the first connecting member is fixed to a side of the carrier substrate close to the bottom plate;

[0011] The position adjustment structure corresponds to the first connecting member one by one, and the position adjustment structure is connected to the corresponding first connecting member.

[0012] In some embodiments, the position adjustment structure includes:

[0013] The first fine-tuning structure is connected to the corresponding first connecting member and is used to adjust the position of the display substrate relative to the bottom plate in a first direction, where the first direction is parallel to the normal line of the carrier substrate.

[0014] In some embodiments, at least one first through hole corresponding to the first fine-tuning structure is formed on the bottom plate;

[0015] The first fine-tuning structure comprises:

[0016] an adjusting member, wherein at least a part of the adjusting member is located in the first through hole, an outer side wall of the adjusting member is movably connected to an inner side wall of the corresponding first through hole, the adjusting member is configured to be movable along the first through hole in the first direction, and the adjusting member has a hollow channel extending along the first direction;

[0017] The second connecting member passes through the hollow channel, the end of the second connecting member close to the first connecting member is connected to the first connecting member, the end of the second connecting member away from the first connecting member is connected to the end of the adjusting member away from the first connecting member, and the first connecting member is connected to the end of the adjusting member close to the first connecting member.

[0018] In some embodiments, the first through hole is a first threaded hole;

[0019] The adjusting member comprises a hollow screw, the outer thread of the hollow screw is adapted to the inner thread of the corresponding first threaded hole, and the hollow screw can move in the first direction by rotating in the first threaded hole.

[0020] In some embodiments, the first connecting member includes: a connecting column, an end of the connecting column close to the carrier substrate is fixed to the carrier substrate, and an end of the connecting column away from the carrier substrate is formed with a second threaded hole;

[0021] The second connecting member comprises: a first screw, wherein the external thread of the first screw is adapted to the corresponding internal thread of the second threaded hole;

[0022] The pan head of the first screw has a cross-sectional area parallel to the plane where the bottom plate is located, which is larger than the cross-sectional area of ​​the hollow channel parallel to the plane where the bottom plate is located, and the pan head of the first screw is connected to an end of the adjusting member away from the connecting column;

[0023] The cross-sectional area of ​​the screw rod of the first screw in a plane parallel to the base plate is smaller than the cross-sectional area of ​​the hollow channel in a plane parallel to the base plate. The screw rod of the first screw passes through the hollow channel and one end of the screw rod of the first screw away from the first screw is fixed to the corresponding connecting column by a thread.

[0024] In some embodiments, the position adjustment structure further includes:

[0025] A second fine-tuning structure, connected to the corresponding second connecting member, for adjusting the second connecting member to move along the corresponding second direction, so as to adjust the position of the display substrate relative to the bottom plate in the second direction;

[0026] The second direction is parallel to the plane where the supporting substrate is located.

[0027] In some embodiments, a second through hole is formed on a side wall of the adjusting member located on a side of the bottom plate away from the display substrate;

[0028] The second fine-tuning structure passes through the corresponding second through hole and is connected to a portion of the second connecting member located in the hollow channel.

[0029] In some embodiments, a portion of the second connecting member located in the hollow channel is formed with a third threaded hole arranged along the corresponding second direction opposite to the second through hole;

[0030] The second fine-tuning structure comprises: a second screw, the external thread of the second screw being adapted to the internal thread of the corresponding third threaded hole;

[0031] The pan head of the second screw is located on the outer side of the side wall of the adjusting member;

[0032] The cross-sectional area of ​​the screw rod of the second screw at right angles to the corresponding second direction is smaller than the cross-sectional area of ​​the second through hole at right angles to the corresponding second direction. The screw rod of the second screw passes through the second through hole and is threadedly fixed to the third threaded hole. The second screw can drive the second connecting member to move in the second direction by rotating in the third threaded hole.

[0033] In some embodiments, the number of the second fine-tuning structures is multiple;

[0034] The second directions corresponding to at least two of the second fine-tuning structures are different directions.

[0035] In some embodiments, the bottom plate has a first side, a second side, a third side, and a fourth side;

[0036] The first side and the second side are arranged opposite to each other in the third direction, the first side and the second side extend respectively along a fourth direction, the third side and the fourth side are arranged opposite to each other in the fourth direction, and the third side and the fourth side extend respectively along the third direction;

[0037] The third direction and the fourth direction are both parallel to the plane where the supporting substrate is located, and the third direction intersects with the fourth direction;

[0038] The second direction corresponding to one or more of the second fine-tuning structures closest to the first side is the third direction; and / or,

[0039] The second direction corresponding to one or more of the second fine-tuning structures closest to the second side edge is the third direction; and / or,

[0040] The second direction corresponding to one or more of the second fine-tuning structures closest to the third side is the fourth direction; and / or,

[0041] The second direction corresponding to one or more second fine-tuning structures closest to the fourth side is the fourth direction.

[0042] In some embodiments, it also includes:

[0043] At least one positioning pin is located at a side of the bottom plate away from the display substrate and is detachably fixed to the bottom plate, and the positioning pin is configured to be positioned with a positioning hole on the carrying box.

[0044] In some embodiments, the positioning pin includes: a positioning pin body and a screw connected to the positioning pin body;

[0045] At least one fourth threaded hole corresponding to the positioning pins is formed on the bottom plate, and the internal thread of the fourth threaded hole is adapted to the external thread of the corresponding screw of the positioning pin.

[0046] In some embodiments, the material of the locating pin body includes plastic.

[0047] In a second aspect, an embodiment of the present disclosure further provides a spliced ​​display device, comprising: a plurality of sub-display panel assemblies, wherein at least one of the sub-display panel assemblies adopts the sub-display panel assembly provided in the first aspect.

[0048] In some embodiments, the spliced ​​display device further includes:

[0049] A carrying box body is configured to carry a plurality of sub-display panel assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic structural diagram of a sub-display panel assembly provided in an embodiment of the present disclosure;

[0051] Figure 2 It is a structural schematic diagram of a fixed frame and a display substrate before being assembled in an embodiment of the present disclosure;

[0052] Figure 3 It is a partial back schematic diagram before the fixed frame and the display substrate are assembled;

[0053] Figure 4 A schematic diagram of a position adjustment structure in an embodiment of the present disclosure;

[0054] Figure 5 A schematic diagram of controlling the movement of a display substrate in a first direction by using a first fine-tuning structure in an embodiment of the present disclosure;

[0055] Figure 6 It is another structural schematic diagram of the position adjustment structure in the embodiment of the present disclosure;

[0056] Figure 7 A schematic diagram of using the second fine-tuning structure in an embodiment of the present disclosure to control the movement of the display substrate in a direction parallel to the plane where the carrier substrate is located;

[0057] Figure 8 A schematic diagram of the distribution of multiple position adjustment structures in an embodiment of the present disclosure;

[0058] Fig. 9 Another distribution diagram of multiple position adjustment structures in an embodiment of the present disclosure;

[0059] Fig.10 A schematic diagram of the structure of a positioning pin in an embodiment of the present disclosure;

[0060] Fig.11 A schematic diagram of the structure of a spliced ​​display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0061] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0062] The present disclosure will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not all drawn to scale. In addition, some well-known parts may not be shown in the drawings.

[0063] Many specific details of the present disclosure are described below, such as component structures, materials, dimensions, processing techniques, and technologies, in order to more clearly understand the present disclosure. However, as those skilled in the art will appreciate, the present disclosure may be implemented without following these specific details.

[0064] Figure 1 A schematic structural diagram of a sub-display panel assembly provided in an embodiment of the present disclosure. Figure 2 It is a structural schematic diagram of a fixed frame and a display substrate before being assembled in an embodiment of the present disclosure. Figure 3 It is a partial back view before the fixed frame and the display substrate are assembled. Figure 4 It is a structural schematic diagram of the position adjustment structure in the embodiment of the present disclosure. Figure 5 FIG. 1 is a schematic diagram of using the first fine-tuning structure to control the movement of the display substrate in the first direction in an embodiment of the present disclosure. Figures 1 to 5 As shown, the sub-display panel assembly includes: a display substrate 1 and a fixed frame 2. The fixed frame 2 includes: a bottom plate 3 and at least one position adjustment structure 4, the bottom plate 3 is arranged opposite to the display substrate 1, the position adjustment structure 4 penetrates the bottom plate 3 and is connected to the display substrate 1, and the position adjustment structure 4 is configured to adjust the relative position between the display substrate 1 and the bottom plate 3.

[0065] In the embodiment of the present disclosure, after the display substrate 1 and the fixed frame 2 are assembled, the relative position between the display substrate 1 and the fixed frame 2 can be adjusted by the position adjustment structure 4 on the fixed frame 2. The entire adjustment process does not require disassembly and reassembly of the assembled display substrate 1 and the fixed frame 2, which can effectively improve the assembly efficiency of the spliced ​​display device and reduce the probability of damage to the display substrate 1.

[0066] In some embodiments, the display substrate 1 includes: a supporting substrate 101, a plurality of light-emitting elements 102 and at least one first connecting member 9; the light-emitting element 102 is fixed to a side of the supporting substrate 101 away from the base plate 3, and the first connecting member 9 is fixed to a side of the supporting substrate 101 close to the base plate 3; the position adjustment structure 4 corresponds one-to-one to the first connecting member 9, and the position adjustment structure 4 is connected to the corresponding first connecting member 9.

[0067] In the disclosed embodiment, the carrier substrate 101 may be a FR4 type printed circuit board, which is composed of an insulating board, a connecting wire layer, and pads for assembling and welding electronic components (such as light-emitting components, driving components, sensing components, etc.). The insulating board and the connecting wire layer may have multiple layers, and the connecting wires located at different layers may be connected by punching holes in the insulating board to achieve via connections. It is understandable that the material of the carrier substrate 101 may also be glass, plastic, quartz, metal, etc., and the carrier substrate is provided with circuits and pads for assembling and welding electronic components (such as light-emitting components, mini LEDs or micro LEDs).

[0068] The light-emitting element 102 can be a micro light-emitting diode (Micro LED) or a mini light-emitting diode (Mini LED), and the Micro LED or Mini LED can be installed on the first side (generally referred to as the front side) of the carrier substrate 101 through a die bonding process; a circuit board is provided on the second side (generally referred to as the back side) of the carrier substrate 101 for providing electrical signals to the light-emitting element on the first side.

[0069] In the disclosed embodiment, the first connector 9 is fixed to the back side of the carrier substrate 101. In some embodiments, the first connector 9 can be made of stainless steel, and a pad for welding the first connector 9 is reserved on the second side of the carrier substrate 101.

[0070] Continue to see Figure 4 and Figure 5 As shown, in some embodiments, the position adjustment structure 4 includes: a first fine-tuning structure 4a, the first fine-tuning structure 4a is connected to the corresponding first connecting member 9, and the first fine-tuning structure 4a is used to adjust the position of the display substrate 1 relative to the bottom plate 3 in the first direction Z, and the first direction Z is parallel to the normal line of the carrier substrate 101. In other words, the display substrate 1 can be controlled to move in the first direction Z through the first fine-tuning structure 4a.

[0071] In some embodiments, at least one first through hole 301 corresponding to the first fine-tuning structure 4 a is formed on the bottom plate 3 ; the first fine-tuning structure 4 a includes: an adjusting member 7 and a second connecting member 8 .

[0072] The adjusting member 7 has a hollow passage 701 extending along the first direction Z, at least part of the structure of the adjusting member 7 is located in the first through hole 301, the outer side wall of the adjusting member 7 is movably connected to the inner side wall of the corresponding first through hole 301, and the adjusting member 7 is configured to be able to move along the first through hole in the first direction Z;

[0073] The second connecting member 8 passes through the hollow channel 701, and the end of the second connecting member 8 close to the first connecting member 9 is connected to the first connecting member 9, the end of the second connecting member 8 away from the first connecting member 9 is connected to the end of the adjusting member 7 away from the first connecting member 9, and the first connecting member 9 is connected to the end of the adjusting member 7 close to the first connecting member 9.

[0074] In the disclosed embodiment, the second connecting member 8 penetrates the hollow channel 701 of the adjusting member 7 and is connected to the corresponding first connecting member 9, and at the same time, one end of the first connecting member 9 close to the adjusting member 7 and one end of the second connecting member 8 away from the first connecting member 9 are respectively connected to the two ends of the adjusting member 7, that is, the second connecting member 8 and the first connecting member 9 are fixed, and the two also clamp and fix the adjusting member 7 in the first direction Z. When the adjusting member 7 is moved in the first direction Z along the first through hole by adjusting, the first connecting member 9 and the display substrate 1 fixed to the first connecting member 9 will be synchronously driven to move synchronously relative to the bottom plate 3 in the first direction Z, so as to adjust the position of the display substrate 1 relative to the bottom plate 3 in the first direction Z.

[0075] In some embodiments, the first through hole 301 is a first threaded hole; the adjusting member 7 includes: a hollow screw, the outer thread of the hollow screw is adapted to the inner thread of the corresponding first threaded hole, and the hollow screw can move in the first direction Z by rotating in the first threaded hole. In other words, the hollow screw can be moved in the first direction Z by rotating the hollow screw, so as to drive the display substrate 1 to move synchronously in the first direction Z.

[0076] In some embodiments, the first connecting member 9 includes a connecting column, an end of the connecting column close to the carrier substrate 101 is fixed to the carrier substrate 101 , and an end of the connecting column away from the carrier substrate 101 is formed with a second threaded hole.

[0077] The second connecting member 8 includes: a first screw, the external thread of the first screw is adapted to the internal thread of the corresponding second threaded hole; the area of ​​the cross section of the pan head of the first screw parallel to the plane where the bottom plate 3 is located is larger than the area of ​​the cross section of the hollow channel 701 parallel to the plane where the bottom plate 3 is located, and the pan head of the first screw is connected to the end of the adjusting member 7 away from the connecting column; the area of ​​the cross section of the screw rod of the first screw parallel to the plane where the bottom plate 3 is located is smaller than the area of ​​the cross section of the hollow channel 701 parallel to the plane where the bottom plate 3 is located, the screw rod of the first screw passes through the hollow channel 701 and the end of the screw rod of the first screw away from the first screw is fixed to the corresponding connecting column by thread. By rotating the pan head of the first screw, the first screw can be moved in the first direction Z.

[0078] It should be noted that the second connecting member 8 is screwed, the first connecting member 9 is provided with a threaded hole, and the first connecting member 9 and the second connecting member 8 are fixed by threads, which is only an optional implementation scheme in the present disclosure and does not limit the technical scheme of the present disclosure. In practical applications, other methods can also be used to fix the first connecting member 9 and the second connecting member 8, such as directly clamping and fixing the two.

[0079] It should be noted that, in the embodiment of the present disclosure, a plurality of position adjustment structures 4 may be provided on the bottom plate 3, and the position adjustment structures 4 are distributed at different positions. By adjusting the first fine-tuning structure 4a in the position adjustment structure 4 located at different positions, the distance between different areas on the single display substrate 1 and the bottom plate 3 may be adjusted, so that the flatness of the single display substrate 1 may be adjusted. In the related art, the flatness of a single display substrate 1 in a sub-display panel assembly is generally greater than 0.1 mm; while in the present application, by adjusting the first fine-tuning structure 4a, the flatness of a single display substrate 1 may be less than 0.05 mm. It can be understood that the flatness of a single display substrate 1 is less than 0.05 mm, indicating that the normal direction of the carrier substrate 101 is substantially perpendicular to the plane where the bottom plate 3 is located, for example, the angle between the normal direction of the carrier substrate 101 and the plane where the bottom plate 3 is located is between 87° and 93°.

[0080] Figure 6 Schematic diagram of another structure of the position adjustment structure in the embodiment of the present disclosure. Figure 7 FIG. 1 is a schematic diagram of using the second fine-tuning structure in an embodiment of the present disclosure to control the movement of the display substrate in a direction parallel to the plane where the carrier substrate is located. Figure 6 and Figure 7 As shown, Figure 6 The position adjustment structure 4 shown includes not only the first fine adjustment structure 4a in the previous embodiment, but also the second fine adjustment structure 4b. Only the second fine adjustment structure 4b will be described in detail below.

[0081] The second fine-tuning structure 4b is connected to the corresponding second connecting member 8, and the second fine-tuning structure 4b is used to adjust the second connecting member 8 to move along the corresponding second direction P, so as to adjust the position of the display substrate 1 relative to the bottom plate 3 in the second direction P; the second direction P is parallel to the plane where the carrier substrate 101 is located. When the second connecting member 8 is adjusted to move in the corresponding second direction P by using the second fine-tuning structure 4b, the first connecting member 9 fixed to the second connecting member 8 and the display substrate 1 fixed to the first connecting member 9 can be driven to move synchronously in the second direction P; that is, the display substrate 1 can be controlled to move in the second direction P by the second fine-tuning structure 4b.

[0082] Each second fine-tuning structure 4 b corresponds to a second direction P parallel to the plane where the carrier substrate 101 is located. The second directions P corresponding to different second fine-tuning structures 4 b may be the same or different, which will be described in detail later with reference to specific examples.

[0083] In some embodiments, a second through hole is formed on the side wall of the adjusting member 7 located on the side of the bottom plate 3 away from the display substrate 1 ; the second fine-tuning structure 4 b penetrates the corresponding second through hole and is connected to the part of the second connecting member 8 located in the hollow channel 701 .

[0084] Further optionally, the portion of the second connecting member 8 located in the hollow channel 701 is formed with a third threaded hole arranged opposite to the second through hole along the corresponding second direction P; the second fine-tuning structure 4b includes: a second screw, the external thread of the second screw is adapted to the internal thread of the corresponding third threaded hole; the pan head of the second screw is located on the outer side of the side wall of the adjusting member 7; the area of ​​the cross section of the screw rod of the second screw perpendicular to the corresponding second direction P is smaller than the area of ​​the cross section of the second through hole perpendicular to the corresponding second direction P, the screw rod of the second screw passes through the second through hole and is fixed to the third threaded hole by thread, and the second screw can drive the second connecting member 8 to move in the second direction P by rotating in the third threaded hole. That is, by rotating the second screw, the second connecting member 8 (specifically, the first threaded hole mentioned above) threadedly connected to the second screw can be moved in the corresponding second direction P, and when the second connecting member 8 moves in the second direction P, the first connecting member 9 fixed to the second connecting member 8 and the display substrate 1 fixed to the first connecting member 9 can be driven to move synchronously in the second direction P. In some embodiments, the portion of the second screw passing through the adjusting member 7 may not have threads.

[0085] In some embodiments, there are multiple second fine-tuning structures 4 b ; the second directions P corresponding to at least two second fine-tuning structures 4 b are different directions.

[0086] In some embodiments, the base plate 3 has a first side, a second side, a third side and a fourth side; the first side and the second side are arranged opposite to each other in the third direction, the first side and the second side extend respectively along the fourth direction, the third side and the fourth side are arranged opposite to each other in the fourth direction, the third side and the fourth side extend respectively along the third direction; the third direction and the fourth direction are parallel to the plane where the supporting substrate 101 is located, and the third direction intersects with the fourth direction.

[0087] The second direction corresponding to the one or more second fine-tuning structures 4b closest to the first side is the third direction; and / or, the second direction corresponding to the one or more second fine-tuning structures 4b closest to the second side is the third direction; and / or, the second direction corresponding to the one or more second fine-tuning structures 4b closest to the third side is the fourth direction; and / or, the second direction corresponding to the one or more second fine-tuning structures 4b closest to the fourth side is the fourth direction.

[0088] Figure 8 FIG. 1 is a schematic diagram of the distribution of multiple position adjustment structures in the embodiment of the present disclosure. Figure 8 As shown, as an optional example, four position adjustment structures 4 are provided on the base plate 3, which are respectively located near the midpoint of the first side 301, near the midpoint of the second side 302, near the midpoint of the third side 303 and near the midpoint of the fourth side 304.

[0089] The second direction P1 corresponding to the second fine-tuning structure 4b in the position adjustment structure 401 close to the midpoint of the first side edge 301 is the third direction X( Figure 8 The second direction P1 corresponding to the second fine-tuning structure 4b in the position adjustment structure 402 close to the midpoint of the second side edge 302 is the third direction X( Figure 8 The second direction P2 corresponding to the second fine-tuning structure 4b in the position adjustment structure 403 close to the midpoint of the third side 303 is the fourth direction Y ( Figure 8 The second direction P2 corresponding to the second fine-tuning structure 4b in the position adjustment structure 404 close to the midpoint of the fourth side 304 is the fourth direction Y ( Figure 8 in the vertical direction).

[0090] That is, by at least one of the second fine-tuning structure 4b in the position adjustment structure 401 near the midpoint of the first side 301 and the second fine-tuning structure 4b in the position adjustment structure 402 near the midpoint of the second side 302, the display substrate 1 can be controlled to move along the third direction X; by at least one of the second fine-tuning structure 4b in the position adjustment structure 403 near the midpoint of the third side 303 and the second fine-tuning structure 4b in the position adjustment structure 404 near the midpoint of the fourth side 304, the display substrate 1 can be controlled to move along the fourth direction Y.

[0091] Through the above arrangement, the relative position of the display substrate 1 with respect to the bottom plate 3 in the third direction X and the fourth direction Y can be controlled. Of course, in the embodiment of the present disclosure, the second direction corresponding to the second fine-tuning structure in the position adjustment structure may not be the third direction X and the fourth direction Y, but a direction intersecting the third direction X and the fourth direction Y. The specific situation can be adjusted according to actual needs.

[0092] Fig. 9 FIG. 2 is another schematic diagram of the distribution of multiple position adjustment structures in the embodiment of the present disclosure. Fig. 9 As shown, in some embodiments, the bottom plate 3 is provided with 12 position adjustment structures arranged in 3 rows and 4 columns.

[0093] The second direction P1 corresponding to the second fine-tuning structure 4b in a position adjustment structure 401 closest to the first side 301 is the third direction X, the second direction P1 corresponding to the second fine-tuning structure 4b in a position adjustment structure 402 closest to the second side 302 is the third direction X, the second direction P2 corresponding to the second fine-tuning structure 4b in the four position adjustment structures 403 closest to the third side 303 is the fourth direction Y, and the second direction P2 corresponding to the second fine-tuning structure 4b in the four position adjustment structures 404 closest to the fourth side 304 is the fourth direction Y.

[0094] The two position adjustment structures 405 located in the middle portion may include only the first fine-tuning structure 4a but not the second fine-tuning structure 4b; or, the two position adjustment structures 405 located in the middle portion may include the second fine-tuning structure 4b, and the second direction P3 (for example, Fig. 9 The second direction P3 shown in FIG. 1 intersects both the third direction X and the fourth direction Y) can be preset according to actual needs.

[0095] It should be noted that in the embodiments of the present disclosure, there is no limitation on the number and arrangement of the position adjustment structures.

[0096] In the embodiment of the present disclosure, the position of the display substrate in a direction parallel to the normal of the base plate can be adjusted by a first fine-tuning structure within the position adjustment structure, so that the flatness of a single display substrate can be less than 0.05 mm, and the flatness between adjacent display substrates can be less than 0.05 mm; the spacing between adjacent display substrates can be less than or equal to 0.05 mm by a second fine-tuning structure within the position adjustment structure.

[0097] In the related art, in order to realize the alignment between the sub-display panel assembly and the carrying box, an aluminum positioning pin is generally provided on the sub-display panel assembly, and a corresponding positioning hole is provided on the carrying box, and the sub-display panel assembly and the carrying box are aligned by the cooperation between the aluminum positioning pin and the positioning hole. The aluminum positioning pin in the related art is generally formed integrally with the aluminum base plate, and the two are inseparable.

[0098] However, in actual applications, it was found that as the splicing size becomes larger and larger, due to the tolerance in the production of structural parts, the larger the splicing size, the more tolerances accumulate. When the large screen is spliced ​​and assembled to a certain size, the sub-display panel assembly and the carrier box may not be assembled together. Research has found that this is because the tolerance accumulation is too large, which causes the aluminum positioning pins in the sub-display panel assembly to be unable to be installed in the corresponding positioning holes on the carrier box, thereby causing the sub-display panel assembly and the carrier box to be unable to be assembled.

[0099] In order to effectively solve the above technical problems, the present disclosure provides corresponding solutions. Fig.10 FIG. 1 is a schematic diagram of a structure of a positioning pin in an embodiment of the present disclosure. Fig.10 As shown, in some embodiments, the sub-display panel assembly further includes: at least one positioning pin 6, located on a side of the bottom plate 3 away from the display substrate 1 and detachably fixed to the bottom plate 3, the positioning pin 6 being configured to be positioned with a positioning hole on the carrying box.

[0100] In the disclosed embodiment, since the positioning pin 6 and the base plate 3 are fixed in a detachable manner, when the positioning pin 6 in the sub-display panel assembly cannot be installed in the corresponding positioning hole on the supporting box due to excessive tolerance accumulation, it is only necessary to remove the positioning pin 6 from the base plate 3 to ensure that assembly and splicing can continue.

[0101] In some embodiments, the positioning pin 6 includes: a positioning pin body 601 and a screw 602 connected to the positioning pin body 601; at least one fourth threaded hole corresponding to the positioning pin is formed on the bottom plate 3, and the internal thread of the fourth threaded hole is adapted to the external thread of the screw 602 of the corresponding positioning pin 6. In other words, when the positioning pin is not needed, the screw 602 in the positioning pin 6 is separated from the fourth threaded hole by rotating the positioning pin body.

[0102] In some embodiments, the material of the positioning pin body 601 includes plastic. In the embodiment of the present disclosure, when the number of sub-display panel assemblies spliced ​​in a certain direction reaches a certain number, the splicing tolerance will be accumulated in an additive manner, and the plastic is soft and has a small friction resistance, so the sub-display panel assembly can still be aligned and assembled with the carrying box. If a sub-display panel assembly cannot be aligned and assembled with the carrying box, the positioning pin 6 on the sub-display panel assembly can be removed from the bottom plate 3, so as to continue the assembly and splicing.

[0103] It should be noted that, in the embodiment of the present disclosure, the number of the positioning pins provided on the bottom plate may be one or more. The technical solution of the present disclosure does not limit the number and arrangement of the positioning pins.

[0104] Based on the same concept, an embodiment of the present disclosure also provides a spliced ​​display device. Fig.11 Schematic diagram of the structure of a spliced ​​display device provided by an embodiment of the present disclosure. Fig.11 As shown, the spliced ​​display device includes: a plurality of sub-display panel assemblies 11, wherein at least one sub-display panel assembly 11 adopts the sub-display panel assembly provided in the previous embodiment. For the detailed description of the sub-display panel assembly 11, please refer to the content in the previous embodiment, which will not be repeated here.

[0105] In some embodiments, the spliced ​​display device further includes: a carrying box 12 ; the carrying box 12 is configured to carry a plurality of sub-display panel assemblies 11 .

[0106] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0107] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sub-display panel assembly, characterized in that: include: Display substrate; A fixed frame, comprising: a bottom plate and at least one position adjustment structure, wherein the bottom plate is arranged opposite to the display substrate, the position adjustment structure penetrates the bottom plate and is connected to the display substrate, and the position adjustment structure is configured to adjust the relative position between the display substrate and the bottom plate; at least one first through hole is formed on the bottom plate; The position adjustment structure includes a first fine-tuning structure and a second fine-tuning structure, and the first fine-tuning structure is arranged in a one-to-one correspondence with the first through hole; The first fine-tuning structure includes an adjusting member and a second connecting member; at least a portion of the adjusting member is located in the first through hole and is configured to be movable along the first through hole in a first direction, and the adjusting member has a hollow channel extending along the first direction; the second connecting member passes through the hollow channel; A second through hole is formed on the side wall of the adjusting member located on the side of the bottom plate away from the display substrate; the second fine-tuning structure passes through the corresponding second through hole and is connected to the part of the second connecting member located in the hollow channel; A third threaded hole is formed in a portion of the second connecting member located in the hollow channel and arranged opposite to the second through hole along a corresponding second direction; The second fine-tuning structure comprises: a second screw, the external thread of the second screw being adapted to the internal thread of the corresponding third threaded hole; The pan head of the second screw is located on the outer side of the side wall of the adjusting member; The cross-sectional area of ​​the screw rod of the second screw at right angles to the corresponding second direction is smaller than the cross-sectional area of ​​the second through hole at right angles to the corresponding second direction. The screw rod of the second screw passes through the second through hole and is threadedly fixed to the third threaded hole. The second screw can drive the second connecting member to move in the second direction by rotating in the third threaded hole.

2. The sub-display panel assembly according to claim 1, characterized in that: The display substrate comprises: a carrier substrate, a plurality of light emitting elements and at least one first connecting member; The light emitting element is fixed to a side of the carrier substrate away from the bottom plate, and the first connecting member is fixed to a side of the carrier substrate close to the bottom plate; The position adjustment structure corresponds to the first connecting member one by one, and the position adjustment structure is connected to the corresponding first connecting member.

3. The sub-display panel assembly according to claim 2, characterized in that: The position adjustment structure comprises: The first fine-tuning structure is connected to the corresponding first connecting member and is used to adjust the position of the display substrate relative to the bottom plate in a first direction, where the first direction is parallel to the normal line of the carrier substrate.

4. The sub-display panel assembly according to claim 3, characterized in that: The outer side wall of the adjusting member is movably connected to the inner side wall of the corresponding first through hole; One end of the second connecting member close to the first connecting member is connected to the first connecting member, one end of the second connecting member away from the first connecting member is connected to one end of the adjusting member away from the first connecting member, and the first connecting member is connected to one end of the adjusting member close to the first connecting member.

5. The sub-display panel assembly according to claim 4, characterized in that: The first through hole is a first threaded hole; The adjusting member comprises a hollow screw, the outer thread of the hollow screw is adapted to the inner thread of the corresponding first threaded hole, and the hollow screw can move in the first direction by rotating in the first threaded hole.

6. The sub-display panel assembly according to claim 4, characterized in that: The first connecting member comprises: a connecting column, one end of the connecting column close to the supporting substrate is fixed to the supporting substrate, and one end of the connecting column away from the supporting substrate is formed with a second threaded hole; The second connecting member comprises: a first screw, wherein the external thread of the first screw is adapted to the corresponding internal thread of the second threaded hole; The pan head of the first screw has a cross-sectional area parallel to the plane where the bottom plate is located, which is larger than the cross-sectional area of ​​the hollow channel parallel to the plane where the bottom plate is located, and the pan head of the first screw is connected to an end of the adjusting member away from the connecting column; The cross-sectional area of ​​the screw rod of the first screw in a plane parallel to the base plate is smaller than the cross-sectional area of ​​the hollow channel in a plane parallel to the base plate. The screw rod of the first screw passes through the hollow channel and one end of the screw rod of the first screw away from the first screw is fixed to the corresponding connecting column by a thread.

7. The sub-display panel assembly according to any one of claims 4 to 6, characterized in that: The second fine-tuning structure is used to adjust the second connecting member to move along the corresponding second direction, so as to adjust the position of the display substrate relative to the bottom plate in the second direction; The second direction is parallel to the plane where the supporting substrate is located.

8. The sub-display panel assembly according to claim 7, characterized in that: The number of the second fine-tuning structures is multiple; The second directions corresponding to at least two of the second fine-tuning structures are different directions.

9. The sub-display panel assembly according to claim 8, characterized in that: The bottom plate has a first side, a second side, a third side and a fourth side; The first side and the second side are arranged opposite to each other in a third direction, the first side and the second side extend respectively along a fourth direction, the third side and the fourth side are arranged opposite to each other in the fourth direction, and the third side and the fourth side extend respectively along the third direction; The third direction and the fourth direction are both parallel to the plane where the supporting substrate is located, and the third direction intersects with the fourth direction; The second direction corresponding to one or more of the second fine-tuning structures closest to the first side is the third direction; and / or, The second direction corresponding to one or more of the second fine-tuning structures closest to the second side edge is the third direction; and / or, The second direction corresponding to one or more of the second fine-tuning structures closest to the third side is the fourth direction; and / or, The second direction corresponding to one or more second fine-tuning structures closest to the fourth side is the fourth direction.

10. The sub-display panel assembly according to claim 1, characterized in that: Also includes: At least one positioning pin is located at a side of the bottom plate away from the display substrate and is detachably fixed to the bottom plate, and the positioning pin is configured to be positioned with a positioning hole on the carrying box.

11. The sub-display panel assembly according to claim 10, characterized in that: The positioning pin comprises: a positioning pin body and a screw connected to the positioning pin body; At least one fourth threaded hole corresponding to the positioning pins is formed on the bottom plate, and the internal thread of the fourth threaded hole is adapted to the external thread of the corresponding screw of the positioning pin.

12. The sub-display panel assembly according to claim 11, characterized in that: The material of the positioning pin body includes plastic.

13. A splicing display device, characterized in that: include: A plurality of sub-display panel assemblies, wherein at least one of the sub-display panel assemblies adopts the sub-display panel assembly described in any one of claims 1 to 12.

14. The splicing display device according to claim 13, characterized in that: Also includes: A carrying box body is configured to carry a plurality of sub-display panel assemblies.

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