Display module, display apparatus, adjusting apparatus and method, and tiled display device

Abstract

The present disclosure provides a display module, a display apparatus, an adjusting apparatus, and an adjusting method. The display module comprises a first frame; a plurality of second frames being provided on the first frame; and a display screen, which comprises a plurality of tiled display substrates, wherein the display substrates are provided on the second frames in a one-to-one correspondence manner; the edge of each second frame extends beyond the edge of the corresponding display substrate, the edge of the first frame does not extend beyond the edge of the display screen; and at the same temperature, the sum of the thermal expansion amounts of the plurality of second frames is smaller than the thermal expansion amount of the first frame.

Description

Display module, display device, adjustment device and method, and spliced ​​display equipment Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display module, a display device, an adjustment device and an adjustment method, and a spliced ​​display device. Background Art

[0002] Mini LED refers to light-emitting diode (LED) chips with a grain size of approximately 100 to 300 microns. Micro-LED refers to light-emitting diode chips with a grain size of less than 100 microns. MiniLED / MicroLED display devices have the advantages of low power consumption, high brightness, high resolution, high color saturation, fast response time, long lifespan, and high efficiency. In addition, when achieving large-scale displays, multiple Mini-LED / Micro-LED display devices can be seamlessly spliced ​​together, which has broad application prospects in large-scale display fields such as command and monitoring centers, commercial centers, high-end conferences, and cinemas.

[0003] Summary of the Invention

[0004] The present disclosure provides a display module, comprising:

[0005] First bracket;

[0006] a plurality of second brackets, wherein the plurality of second brackets are arranged on the first bracket;

[0007] A display screen, comprising a plurality of display substrates connected together, wherein the display substrates are arranged on the second bracket in a one-to-one correspondence;

[0008] The edge of the second bracket extends beyond the edge of the corresponding display substrate, and the edge of the first bracket does not extend beyond the edge of the display screen; at the same temperature, the sum of the thermal expansion amounts of the plurality of second brackets is less than the thermal expansion amount of the first bracket.

[0009] In some embodiments, the first bracket is provided with an adjustment hole;

[0010] The display module further includes: an adjustment component, at least a portion of which is disposed in the adjustment hole and connected to the second bracket; the adjustment component is configured to extend and retract in the thickness direction of the display module to adjust the gap between the first bracket and the second bracket.

[0011] In some embodiments, the adjustment component includes:

[0012] a first fastener, the first fastener being detachably mounted in the adjustment hole and being movable along the axial direction of the adjustment hole;

[0013] An elastic member, at least a portion of which is located in the adjustment hole, and two ends of the elastic member are respectively connected to the first fastener and the second bracket.

[0014] In some embodiments, each of the second brackets corresponds to a plurality of the adjustment components, the second bracket is rectangular, and the adjustment component is provided at least at each corner of the second bracket.

[0015] In some embodiments, the display module further includes a second fastener, and the second bracket is detachably connected to the first bracket via the second fastener.

[0016] In some embodiments, the display substrate is bonded to the second bracket via an adhesive layer.

[0017] In some embodiments, the first bracket is provided with a first through hole, and the second bracket is further provided with a second through hole;

[0018] The display module also includes: a driving circuit board, which is arranged on a side of the first bracket away from the second bracket; a flexible circuit board is arranged on a side of the display substrate close to the second bracket, one end of the flexible circuit board is electrically connected to the display substrate, and the other end passes through the first through hole and the second through hole to be electrically connected to the driving circuit board.

[0019] In some embodiments, the first bracket includes: a bracket body and a support plate provided on the bracket body, wherein the support plate is made of the same material as the bracket body; the first through hole is provided on the support plate;

[0020] The bracket body has a hollow portion, the opening area of ​​the hollow portion is larger than the opening area of ​​the first through hole, the support plate is arranged opposite to the hollow portion; the first through hole is connected to the hollow portion.

[0021] The present disclosure further provides a display device, comprising the display module and a housing described in the above embodiments, wherein the display module is fixed to the housing, and the second bracket is located on a side of the first bracket away from the housing.

[0022] In some embodiments, a plurality of first connecting members are provided on the box body, a plurality of second connecting members are provided on the first bracket, and the second connecting members are provided in a one-to-one correspondence with the plurality of first connecting members and are adsorbed on each other.

[0023] In some embodiments, the second bracket is detachably connected to the first bracket via a second fastener;

[0024] The box body includes: a side wall and a bottom wall, one end of the side wall is connected to the bottom wall, and the first bracket is supported on the end of the side wall away from the bottom wall; wherein, a plurality of mounting holes are provided on the bottom wall, and each mounting hole is arranged opposite to a second fastener.

[0025] The present disclosure further provides an adjustment device for adjusting the flatness of the display module described in the above embodiment, the adjustment device comprising:

[0026] A first platform includes a carrying area, wherein the carrying area is used to carry the display module;

[0027] A plurality of height-limiting retaining walls are provided on the first platform and surround the bearing area; the heights of the plurality of height-limiting retaining walls are consistent;

[0028] a height limiting plate assembly, at least a portion of which is disposed on top of the plurality of height limiting retaining walls;

[0029] The height limiting plate assembly has an open state and a closed state. In the open state, the orthographic projection of the height limiting plate assembly on the first platform does not overlap with the bearing area.

[0030] In the buckled state, a portion of the height limiting plate assembly is pressed against the display module located in the carrying area.

[0031] In some embodiments, the plurality of height-limiting retaining walls include: a first retaining wall, a second retaining wall, a third retaining wall, and a fourth retaining wall; wherein the first retaining wall and the second retaining wall are arranged opposite to each other in a first direction, and the third retaining wall and the fourth retaining wall are arranged opposite to each other in a second direction;

[0032] The first retaining wall and the third retaining wall are fixed on the first platform; the second retaining wall is slidably arranged on the first platform and can move along the first direction; the fourth retaining wall is slidably arranged on the first platform and can move along the second direction.

[0033] In some embodiments, the height limit plate assembly includes: multiple height limit plates, and the tops of at least three of the first retaining wall, the second retaining wall, the third retaining wall, and the fourth retaining wall are each provided with a height limit plate, and the height limit plate is rotatably connected to the corresponding height limit retaining wall.

[0034] In some embodiments, the height limiting plate is rotatably connected to the height limiting retaining wall via a rotating shaft, and the rotating shaft is located at an edge of the height limiting retaining wall away from the bearing area.

[0035] The present disclosure further provides an adjustment method for adjusting the flatness of the display module described in the above embodiment, the adjustment method comprising:

[0036] Placing the display module on the carrying area of ​​the adjustment device described in the above embodiment, and making the display substrate fit the first platform;

[0037] When the height limiting plate assembly is in a buckled state, the adjustment assembly is controlled to expand and contract in the thickness direction of the display module to adjust the gap between the first bracket and the second bracket until the height limiting plate assembly reaches a flat state.

[0038] The present disclosure also provides a spliced ​​display device, comprising the display apparatus described in the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0040] FIG1 is a cross-sectional view of a display module provided in an embodiment of the present disclosure.

[0041] FIG2 is a rear view of a display module provided in an embodiment of the present disclosure.

[0042] FIG3 is an exploded schematic diagram of a display module provided in an embodiment of the present disclosure.

[0043] FIG4 is a rear view of a display substrate provided in an embodiment of the present disclosure.

[0044] FIG5 is a schematic structural diagram of a display module provided in an embodiment of the present disclosure.

[0045] FIG6A is a schematic structural diagram of a display device provided in an embodiment of the present disclosure.

[0046] FIG6B is a schematic structural diagram of another display device provided in an embodiment of the present disclosure.

[0047] FIG6C is a schematic structural diagram of another display device provided in an embodiment of the present disclosure.

[0048] FIG7 is a cross-sectional view of an adjustment device and a display module provided in an embodiment of the present disclosure.

[0049] FIG8 is another cross-sectional view of an adjustment device and a display module provided in an embodiment of the present disclosure.

[0050] FIG9 is a top view of an adjustment device and a display module provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0051] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0052] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is only for the purpose of facilitating the description of this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation of the present disclosure. The positional relationships of the constituent elements may be appropriately changed according to the direction in which each constituent element is described. Therefore, the words and phrases described in the specification are not limited and may be appropriately replaced according to the circumstances.

[0053] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be fixedly connected, or detachably connected, or connected in one piece; it can be mechanically connected or connected; it can be directly connected, or indirectly connected through an intermediate piece, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0054] In a video wall display device, the housing is used to support at least one display module. In one example, the display module may include a bracket and a display substrate supported thereon. The bracket is fixed to the housing, and the display substrate is fixed to the side of the bracket away from the housing. The display substrate may include a base substrate and a light-emitting element disposed on the base substrate. The base substrate may be a glass substrate.

[0055] Furthermore, in a spliced ​​display device, there can be multiple light-emitting substrates, which can be spliced ​​together to form a spliced ​​display. For example, in a spliced ​​display device, there can be one cabinet, which carries multiple light-emitting substrates; or in another example, there can be multiple cabinets, each of which carries one or more light-emitting substrates.

[0056] The display substrate includes a base substrate and a plurality of light-emitting elements disposed on the base substrate. The light-emitting elements may be LEDs (light-emitting diodes), sub-millimeter light-emitting diodes (Mini LEDs), micron light-emitting diodes (Micro LEDs), and organic light-emitting diodes (OLEDs). The light-emitting elements may emit a variety of colors. For example, the light-emitting elements may be divided into a plurality of repeating units, each of which includes a red light-emitting element, a green light-emitting element, and a blue light-emitting element.

[0057] Mini LED refers to LED chips with a crystal size of approximately 100μm to 300μm, while Micro LED refers to LED chips with a crystal size below 100μm. Mini LED / Micro LED can be used as self-luminous LED displays, offering advantages such as low power consumption, high brightness, high resolution, high color saturation, fast response, long lifespan, and high efficiency. Mini LED / Micro LED display modules can be spliced ​​together to create ultra-large screen displays, and have broad application prospects in large-scale display applications such as command and control centers, commercial centers, high-end conference rooms, and private theaters.

[0058] Taking the Mini LED display substrate as an example, in the glass substrate splicing solution, the Mini LED chip is directly mounted on the glass substrate. Since the glass substrate is fragile and has insufficient resistance to external interference, it is easy to cause the glass substrate to be damaged by bumps and the light-emitting components at the edge to be damaged. Therefore, the relevant technology usually adopts a design in which the edge of the bracket extends beyond the edge of the glass substrate. However, due to the thermal expansion of the bracket when heated, especially when the bracket is made of metal, the thermal expansion of the bracket will cause the joints between multiple brackets to expand, thereby causing the gap between the display areas of adjacent display substrates to become larger, resulting in dark seams between the display images of adjacent display substrates, thereby reducing the display effect of the product. Therefore, the size of the bracket beyond the display substrate cannot be too large, but in this case, it will lead to the problem of poor protection of the display substrate.

[0059] FIG1 is a cross-sectional view of a display module provided in an embodiment of the present disclosure. As shown in FIG1 , the display module 20 includes a first bracket 1, a plurality of second brackets 2, and a display screen.

[0060] The display screen includes a plurality of display substrates 3 spliced ​​together, and the display substrates 3 are arranged one by one on the side of the second bracket 2 away from the first bracket 1. For example, the display screen may include M×N display substrates 3, where M and N are both integers greater than 0, and M and N cannot be 1 at the same time.

[0061] Among them, the display substrate 3 can be a mini-LED display substrate or a micro LED display substrate, and the base substrate of the display substrate 3 can be made of materials such as glass, quartz or plastic. For example, in the embodiment of the present disclosure, the base substrate is a glass plate.

[0062] In the embodiment of the present disclosure, the edge of the first bracket 1 does not exceed the edge of the corresponding display substrate 3, the edge of the second bracket 2 exceeds the edge of the corresponding display substrate 3, and at the same temperature, the sum of the thermal expansion of multiple second brackets 2 is less than the thermal expansion of the first bracket 1.

[0063] In the disclosed embodiment, the thermal expansion of the second bracket 2 and the thermal expansion of the first bracket 1 specifically refer to their thermal expansion in a direction parallel to the display substrate 3 after being heated. For example, if the first bracket 1 and the second bracket 2 are both rectangular, then the sum of the thermal expansions of the plurality of second brackets 2 in the length direction is less than the thermal expansion of the first bracket 1 in the length direction; and the thermal expansion of the plurality of second brackets 2 in the width direction is less than the thermal expansion of the first bracket 1 in the width direction.

[0064] The disclosed embodiment provides protection for the display substrates 3 disposed on the second brackets 2 by disposing a plurality of second brackets 2 on the first bracket 1, with the edges of the second brackets 2 extending beyond the edges of the corresponding display substrates 3. Furthermore, because the edges of the first brackets 1 do not extend beyond the edge of the display screen, thermal expansion of the first bracket 1 does not result in excessive gaps between the display areas of adjacent display substrates 3. Furthermore, because the sum of the thermal expansion of the plurality of second brackets 2 is less than the thermal expansion of the first bracket 1, thermal expansion of the second brackets 2 does not result in excessive gaps between the display areas of adjacent display substrates 3, thereby improving the display quality of the display screen.

[0065] The plurality of display substrates 3 are arranged on the plurality of second brackets 2 in a one-to-one correspondence, so that the convenient assembly and disassembly of the single display substrate 3 can be achieved.

[0066] In the disclosed embodiment, as shown in Figure 1 , an adjustment hole 4a is provided on the first bracket 1. The display module 20 further includes an adjustment assembly 4, at least a portion of which is disposed in the adjustment hole 4a and connected to the second bracket 2. The adjustment assembly 4 is configured to extend and retract in the thickness direction of the display module 20 to adjust the gap between the first bracket 1 and the second bracket 2.

[0067] Due to production process limitations, multiple display substrates 3 in the same display module 20 may not be on the same plane, thus affecting the display effect. In this case, the adjustment component 4 can be used to adjust the thickness of the multiple display substrates 3 in the same display module 20 until the display surfaces of the multiple display substrates 3 are on the same plane, thereby improving the display effect of the display module 20.

[0068] In some embodiments, as shown in FIG1 , the adjustment assembly 4 includes a first fastener 401 and an elastic member 402. The first fastener 401 is detachably mounted within the adjustment hole 4a and is movable axially along the adjustment hole 4a. At least a portion of the elastic member 402 is positioned within the adjustment hole 4a, and its ends are connected to the first fastener 401 and the second bracket 2, respectively.

[0069] The elastic member 402 may be a spring or a spring. The adjustment hole 4a may be provided with an internal thread. The first fastener 401 may be a screw. By rotating the first fastener 401, the first fastener 401 is moved axially along the adjustment hole 4a. Of course, in other embodiments, the first fastener 401 may also adopt other structures.

[0070] When adjusting the flatness of the display module 20, the display screen needs to be kept fixed. For example, the display module 20 can be inverted on a first platform with a flat surface. By moving the first fastener 401 along the axial direction of the adjustment hole, the expansion and contraction amount of the elastic member 402 is adjusted, and then the size of the gap between the first bracket 1 and the second bracket 2 is adjusted, thereby achieving the display surfaces of the multiple display substrates 3 in the display module 20 being located on the same plane, thereby ensuring the flatness of the surface of the display module 20, which is beneficial to improving the display effect.

[0071] Figure 2 is a rear view of a partial structure of a display module provided in an embodiment of the present disclosure. As shown in Figure 2, in some embodiments, the second bracket 2 corresponds to a plurality of adjustment components 4, the second bracket 2 is rectangular, and an adjustment component 4 is provided at least at each corner of the second bracket 2, thereby improving the flatness adjustment effect of each display substrate 3.

[0072] In one example, an adjustment component 4 may be provided only at each corner of the second bracket 2, or an adjustment component 4 may be provided at each corner of the second bracket 2 and at the middle position of the edge of the second bracket 2, thereby further improving the flatness adjustment effect of the display substrate 3.

[0073] In some embodiments, as shown in FIG1 , the display module 20 further includes a second fastener 5 , through which the second bracket 2 is detachably connected to the first bracket 1 . The second fastener 5 may be a screw. For example, a first threaded hole 5 a is provided on the first bracket 1 , and a second threaded hole 5 b is provided on the second bracket 2 . The second fastener 5 is screwed sequentially into the first threaded hole 5 a and the second threaded hole 5 b , thereby connecting the first bracket 1 to the second bracket 2 . Of course, in other embodiments, the second fastener 5 may also employ other structures.

[0074] In the embodiment of the present disclosure, as shown in FIG1 , the display substrate 3 is bonded to the second bracket 2 via an adhesive layer 6. The display module 20 includes a plurality of display substrates 3 and a plurality of second brackets 2, wherein the plurality of display substrates 3 and the plurality of second brackets 2 are bonded one-to-one via the adhesive layer 6, thereby forming a display screen with a larger area. The adhesive layer 6 may be a double-sided tape, or may be replaced by any adhesive capable of bonding the display substrate 3 to the second bracket 2. Of course, in other embodiments, the display substrate 3 and the second bracket 2 may be fixedly connected via other connection structures.

[0075] Figure 3 is a schematic diagram of an exploded view of a display module provided in an embodiment of the present disclosure, Figure 4 is a rear view of a display substrate provided in an embodiment of the present disclosure, and Figure 5 is a schematic diagram of the structure of a display module provided in an embodiment of the present disclosure. As shown in Figures 3 to 5, in some embodiments, a first through hole 7 is provided on the first bracket 1, and a second through hole 8 is also provided on the second bracket 2.

[0076] The display module 20 further includes a driving circuit board 9 , wherein the driving circuit board 9 is disposed on a side of the first bracket 1 away from the second bracket 2 .

[0077] As shown in Figures 3 and 4 , a flexible circuit board 10 is provided on the side of the display substrate 3 near the second bracket 2. One end of the flexible circuit board 10 is electrically connected to the display substrate 3, and the other end of the flexible circuit board 10 is electrically connected to the driver circuit board 9 through the first through-hole 7 and the second through-hole 8. The driver circuit board 9 transmits drive signals to the display substrate 3 through the flexible circuit board 10, thereby achieving display control of the display substrate 3.

[0078] Specifically, the display substrate 3 includes a display area and a non-display area, with the light-emitting elements disposed in the display area. The non-display area includes a pad area, which is provided with a plurality of pads for providing drive signals to the light-emitting elements in the display area. The electrical connection between one end of the flexible circuit board 10 and the display substrate 3 in the disclosed embodiments refers to the electrical connection between one end of the flexible circuit board 10 and the pads.

[0079] In the embodiment of the present disclosure, a connector 9a is provided on the driving circuit board 9 (for example, connected using a Zif connector or a B2B connector), one end of the flexible circuit board 10 is electrically connected to the adapter 9a through the first through hole 7 and the second through hole 8, and the other end is electrically connected to the pad in the pad area through a connecting wire, wherein the connecting wire bypasses the side of the substrate to electrically connect the flexible circuit board 10 to the pad.

[0080] As shown in FIG5 , in some embodiments, the first bracket 1 includes a bracket body 100 and a support plate 101 disposed on the bracket body 100 , wherein the support plate 101 is provided with a first through hole 7 . The thermal conductivity of the support plate 101 is greater than or equal to the thermal conductivity of the bracket body 100 .

[0081] As shown in Figure 1, the bracket body 100 has a hollow portion 7a, the opening area of ​​the hollow portion 7a is larger than the opening area of ​​the first through hole 7, the support plate 101 is arranged opposite to the hollow portion 7a, and the first through hole 7 is connected to the hollow portion 7a. Among them, the side of the support plate 101 facing away from the first bracket 1 is in contact with the second bracket 2. By setting the support plate 101, the contact area between the second bracket 2 and the first bracket 1 can be increased, and the heat of the second bracket 2 can be quickly transferred to the first bracket 1, and then the heat is dissipated to the outside. In this way, the thermal expansion of the second bracket 2 when the display screen temperature rises can be minimized, thereby minimizing the splicing seams generated between the display areas of different display substrates 3.

[0082] FIG6A is a schematic diagram of the structure of a display device provided in an embodiment of the present disclosure, FIG6B is a schematic diagram of the structure of another display device provided in an embodiment of the present disclosure, and FIG6C is a schematic diagram of the structure of yet another display device provided in an embodiment of the present disclosure. As shown in FIG6A to FIG6C , the display device includes the display module 20 and the housing 11 in the above embodiments. The display module 20 is fixed to the housing 11, and the second bracket 2 is located on the side of the first bracket 1 away from the housing 11. The housing 11 is used to support at least one display module 20.

[0083] As shown in Figure 6A, in some embodiments, a plurality of first connecting members (not shown) are provided on the box body 11, and a plurality of second connecting members 1a (see Figure 2) are provided on the first bracket 1, and the plurality of second connecting members 1a are provided in one-to-one correspondence with the plurality of first connecting members and are magnetically adsorbed.

[0084] The first and second connectors 1a are magnetic connectors that connect the housing 11 and the first bracket 1. For example, both the first and second connectors 1a may be magnetic. The magnetism of the two ends adjacent to each other may be opposite. Alternatively, one of the first or second connectors 1a may be a magnetic member, and the other may be an iron sheet that attracts the magnetic member.

[0085] In practical applications, the number of first and second connectors 1a can be set according to the size of the box body 11 to ensure a stable connection between the box body 11 and the first bracket 1. For example, a second connector 1a is provided at each corner of the first bracket 1. For another example, a second connector 1a is provided at each corner of the first bracket 1 and at the middle of the side of the first bracket 1. For another example, a second connector 1a is provided at each corner corresponding to each second bracket 2. For another example, a second connector 1a is provided at each corner of the first bracket 1 corresponding to the second bracket 2 and at the middle of the side of the first bracket 1 corresponding to the second bracket 2.

[0086] In the present disclosure, the first connecting member and the second connecting member 1 a are configured as magnetic connecting members to facilitate the disassembly between the first bracket 1 and the box body 11 .

[0087] In other embodiments, the first connecting member and the second connecting member 1a may be replaced by other detachable connecting members, such as vacuum suction cups, threaded connectors, or buckles.

[0088] In some embodiments, as shown in FIG6 , the box body 11 includes a side wall 11a and a bottom wall 11b, with one end of the side wall 11a connected to the bottom wall 11b. The first bracket 1 is supported on the end of the side wall 11a away from the bottom wall 11b. The bottom wall 11b is provided with a plurality of mounting holes 11c, each of which is disposed opposite a second fastener 5.

[0089] As shown in FIG6B , the operator can also adjust the second fastener 5 by using the adjusting wrench 12 through the mounting hole 11 c to fix the second fastener 5 to the first bracket 1 and the second bracket 2; or disassemble the second fastener 5 to facilitate the assembly and disassembly of the first bracket 1 and the second bracket 2.

[0090] In some embodiments, the display device may include one display module 20 or multiple display modules 20 , wherein the multiple display modules 20 may be spliced ​​together to form an ultra-large screen display device as shown in FIG. 6C .

[0091] FIG7 is a cross-sectional view of an adjustment device and a display module provided in an embodiment of the present disclosure, FIG8 is another cross-sectional view of an adjustment device and a display module provided in an embodiment of the present disclosure, and FIG9 is a top view of an adjustment device and a display module provided in an embodiment of the present disclosure. As shown in FIG7 to FIG9 , the adjustment device 30 provided in the present disclosure is used to adjust the flatness of the display module 20 in the above embodiment, wherein the adjustment device 30 includes a first platform 31, a plurality of height-limiting retaining walls 32, and a height-limiting plate assembly 33. The first platform 31 includes a supporting area 31a, which is used to support the display module 20.

[0092] A plurality of height-limiting retaining walls 32 are disposed on the first platform 31 and surround the bearing area 31 a , and the plurality of height-limiting retaining walls 32 are of the same height. At least a portion of the height-limiting plate assembly 33 is disposed on top of the plurality of height-limiting retaining walls 32 .

[0093] The height limiting plate assembly 33 has an open state and a locked state. As shown in FIG7 , in the open state, the orthographic projection of the height limiting plate assembly 33 on the first platform 31 does not overlap with the supporting area 31 a, which is conducive to placing the display module 20 in the supporting area for flatness adjustment.

[0094] As shown in Figure 8, in the buckled state, a portion of the height limiting plate assembly 33 is pressed against the display module 20 located in the bearing area 31a. Specifically, the display module 20 is inverted on the bearing area 31a so that the light-emitting surface of the display module 20 contacts the bearing area 31a. The height limiting plate assembly 33 is pressed against the surface of the first bracket 1 in the display module 20 away from the light-emitting surface of the display module 20. If the portion of the height limiting plate assembly 33 opposite to the height limiting retaining wall 32 cannot be completely fitted with the top surface of the height limiting retaining wall 32, the second fastener 5 can be removed, and the gap between the first bracket 1 and the second bracket 2 can be adjusted by the adjustment assembly 4 until the portion of the height limiting plate assembly 33 opposite to the height limiting retaining wall 32 is completely fitted with the top surface of the height limiting retaining wall 32, which indicates that the display surfaces of the multiple display substrates 3 in the display module 20 are located on the same plane. Finally, the first bracket 1 and the second bracket 2 are fixedly connected together by a plurality of second fasteners 5, thereby ensuring the surface flatness of the display screen and improving the display effect.

[0095] In some embodiments, as shown in Figures 7 to 9, the plurality of height-limiting retaining walls 32 include: a first retaining wall 32a, a second retaining wall 32b, a third retaining wall 32c, and a fourth retaining wall 32d. The first retaining wall 32a and the second retaining wall 32b are disposed opposite each other in a first direction, and the third retaining wall 32c and the fourth retaining wall 32d are disposed opposite each other in a second direction.

[0096] In some embodiments, the first retaining wall 32a and the third retaining wall 32c are fixed on the first platform 31. For example, the first retaining wall 32a, the third retaining wall 32c and the first platform 31 may be an integral structure, thereby simplifying the production process.

[0097] In some embodiments, the second retaining wall 32b is slidably disposed on the first platform 31 and is movable in a first direction, and the fourth retaining wall 32d is slidably disposed on the first platform 31 and is movable in a second direction. The sliding arrangement of the second retaining wall 32b and the fourth retaining wall 32d enables the adjustment device 30 to accommodate display modules 200 of different sizes, thereby enabling flatness adjustment via the adjustment assembly 4.

[0098] In some embodiments, a first guide rail and a second guide rail (not shown) may be provided on the first platform 31, the second retaining wall 32b may be provided on the first guide rail, and the fourth retaining wall 32d may be provided on the second guide rail. The first and second guide rails may be guide grooves provided on the first platform 31, and the second and fourth retaining walls 32b and 32d may be provided with sliders corresponding to the guide grooves. This configuration of the first and second guide rails as guide grooves not only does not affect the placement of the display module, but also allows the loading area 31a to accommodate display modules 20 of different sizes by adjusting the positions of the second and fourth retaining walls 32b and 32d on the first platform 31.

[0099] Furthermore, the second retaining wall 32b and the fourth retaining wall 32d are fixedly connected to a push rod 40 on one side away from the bearing area 31a. In actual operation, the push rod 40 can be pushed mechanically or manually to move, thereby pushing the second retaining wall 32b and the fourth retaining wall 32d to slide along the guide groove.

[0100] In some embodiments, as shown in Figure 9, the height limiting plate assembly 33 includes: multiple height limiting plates 330, and at least three of the first retaining wall 32a, the second retaining wall 32b, the third retaining wall 32c, and the fourth retaining wall 32d are provided with a height limiting plate 330 at the top, and the height limiting plate 330 is rotatably connected to the corresponding height limiting retaining wall 32.

[0101] In some embodiments, as shown in FIG9 , the height limiting plate 330 can be a single strip, or can be composed of multiple strips fixedly connected. For example, the height limiting plate 330 can include a first strip 330a, a second strip 330b, and a connecting portion 330c, wherein the first strip 330a is fixedly connected to the second strip 330b via the connecting portion 330c. The first strip 330a is connected to the third retaining wall 32c via a rotating shaft. When adjusting the flatness of the display module 20, the height limiting plate 330 can be flipped so that the second strip 330b is pressed against the fourth retaining wall 32d, and the connecting portion 330c is pressed against the first bracket 1 of the display module 20, thereby limiting the height of the display module 20 and adjusting the flatness of the display module 20.

[0102] The length of each strip body may be greater than the length of the display substrate 3 . For example, the length of the height limiting plate 330 may be 1.5 to 2 times the length of the display substrate.

[0103] In some embodiments, the height limiting plate 330 is rotatably connected to the height limiting retaining wall 32 via a rotating shaft 34. The rotating shaft 34 is located on the edge of the height limiting retaining wall 32 away from the load-bearing area 31a, thereby ensuring that the height limiting plate 330 can achieve surface contact with the top surface of the height limiting retaining wall 32. The rotating shaft 34 is located on the side of the height limiting retaining wall 32 away from the load-bearing area and can be rotated at a large angle. For example, the rotating shaft 34 can be a 180° rotating shaft, capable of any angle between 0° and 180°.

[0104] The present disclosure also provides an adjustment method for adjusting the flatness of the display module 20 in the above embodiment. The adjustment method includes the following steps:

[0105] S1. Place the display module on the supporting area of ​​the adjusting device in the above embodiment, and make the display substrate fit the first platform.

[0106] S2. When the height limiting plate assembly is in a locked state, the adjustment assembly is controlled to expand and contract in the thickness direction of the display module to adjust the gap between the first bracket and the second bracket until the height limiting plate assembly reaches a flat state.

[0107] It should be noted that the flat state here means that the height limiting plate assembly 33 can form surface contact with the top surface of the height limiting retaining wall 32, that is, the height limiting plate assembly 33 is parallel or approximately parallel to the top surface of the height limiting retaining wall 32.

[0108] The present disclosure also provides a spliced ​​display device, including the display device described in the above embodiments. In practical applications, the spliced ​​display device may include a single display device or multiple spliced ​​display devices. The multiple display devices can achieve different display effects through different splicing methods. For example, the multiple display devices can be arranged in a row with multiple columns, multiple rows with one column, or multiple rows with multiple columns.

[0109] Of course, other methods can be used to splice multiple display devices according to actual needs.

[0110] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display module, characterized in that: include: First bracket; a plurality of second brackets, wherein the plurality of second brackets are arranged on the first bracket; A display screen, the display screen comprising a plurality of spliced ​​display substrates, the display substrates being arranged on the second bracket in a one-to-one correspondence; Wherein, the edge of the second bracket exceeds the edge of the corresponding display substrate, and the edge of the first bracket does not exceed the edge of the display screen; At the same temperature, the sum of the thermal expansion amounts of the plurality of second brackets is smaller than the thermal expansion amount of the first bracket.

2. The display module according to claim 1, characterized in that: The first bracket is provided with an adjustment hole; The display module further includes: an adjustment component, at least a portion of which is disposed in the adjustment hole and connected to the second bracket; the adjustment component is used to extend and retract in the thickness direction of the display module to adjust the gap between the first bracket and the second bracket.

3. The display module according to claim 2, characterized in that: The adjustment component comprises: a first fastener, which is detachably mounted in the adjustment hole and is movable along the axial direction of the adjustment hole; An elastic member, at least a portion of which is located in the adjustment hole, and two ends of the elastic member are respectively connected to the first fastener and the second bracket.

4. The display module according to claim 2, characterized in that: Each of the second brackets corresponds to a plurality of the adjustment components. The second bracket is rectangular, and the adjustment component is provided at least at each corner of the second bracket.

5. The display module according to any one of claims 1 to 4, characterized in that: The display module further includes a second fastener, and the second bracket is detachably connected to the first bracket via the second fastener.

6. The display module according to any one of claims 1 to 4, characterized in that: The display substrate is bonded to the second bracket via a bonding layer.

7. The display module according to any one of claims 1 to 4, characterized in that: The first bracket is provided with a first through hole, and the second bracket is also provided with a second through hole; The display module also includes: a driving circuit board, which is arranged on a side of the first bracket away from the second bracket; a flexible circuit board is arranged on a side of the display substrate close to the second bracket, one end of the flexible circuit board is electrically connected to the display substrate, and the other end passes through the first through hole and the second through hole to be electrically connected to the driving circuit board.

8. The display module according to claim 7, characterized in that: The first bracket comprises: a bracket body and a support plate arranged on the bracket body, wherein the thermal conductivity of the support plate is greater than or equal to the thermal conductivity of the bracket body; the first through hole is arranged on the support plate; The bracket body has a hollow portion, the opening area of ​​the hollow portion is larger than the opening area of ​​the first through hole, the support plate is arranged opposite to the hollow portion; and the first through hole is connected to the hollow portion.

9. A display device, characterized in that: It comprises the display module and box body according to any one of claims 1 to 8, wherein the display module is fixed on the box body, and the second bracket is located on a side of the first bracket away from the box body.

10. The display device according to claim 9, characterized in that: The box body is provided with a plurality of first connecting members, the first bracket is provided with a plurality of second connecting members, and the second connecting members are provided in one-to-one correspondence with the plurality of first connecting members and are magnetically attracted to each other.

11. The display device according to claim 9, characterized in that The second bracket is detachably connected to the first bracket via a second fastener; The box body includes: a side wall and a bottom wall, one end of the side wall is connected to the bottom wall, and the first bracket is supported on an end of the side wall away from the bottom wall; wherein a plurality of mounting holes are arranged on the bottom wall, and each of the mounting holes is arranged opposite to one of the second fasteners.

12. An adjusting device for adjusting the flatness of the display module according to any one of claims 2 to 4, characterized in that: The regulating device comprises: A first platform, comprising a bearing area, wherein the bearing area is used to bear the display module; A plurality of height-limiting retaining walls are arranged on the first platform and surround the bearing area; the heights of the plurality of height-limiting retaining walls are consistent; A height limiting plate assembly, at least part of which is arranged on top of the plurality of height limiting retaining walls; Among them, the height limiting plate assembly has an open state and a buckled state. In the open state, the orthographic projection of the height limiting plate assembly on the first platform does not overlap with the bearing area; in the buckled state, a portion of the height limiting plate assembly is pressed on the display module located in the bearing area.

13. The adjustment device according to claim 12, characterized in that The plurality of height-limiting retaining walls include: a first retaining wall, a second retaining wall, a third retaining wall and a fourth retaining wall; wherein the first retaining wall and the second retaining wall are arranged opposite to each other in the first direction; and the third retaining wall and the fourth retaining wall are arranged opposite to each other in the second direction; The first retaining wall and the third retaining wall are fixed on the first platform; the second retaining wall The fourth retaining wall is slidably disposed on the first platform and is capable of moving along the first direction; the fourth retaining wall is slidably disposed on the first platform and is capable of moving along the second direction.

14. The adjustment device according to claim 13, characterized in that The height limiting plate assembly includes: a plurality of height limiting plates, at least three of the first retaining wall, the second retaining wall, the third retaining wall and the fourth retaining wall are provided with the height limiting plates at the top, and the height limiting plates are rotatably connected to the corresponding height limiting retaining walls.

15. The adjustment device according to claim 14, characterized in that The height limiting plate is rotatably connected to the height limiting retaining wall via a rotating shaft, and the rotating shaft is located at an edge of the height limiting retaining wall away from the bearing area.

16. A method for adjusting the flatness of the display module according to any one of claims 2 to 4, characterized in that: The adjustment method comprises: Placing the display module on the carrying area of ​​the adjusting device according to any one of claims 12 to 15, and making the display substrate fit the first platform; When the height limiting plate assembly is in a buckled state, the adjusting assembly is controlled to extend and retract in the thickness direction of the display module to adjust the gap between the first bracket and the second bracket until the height limiting plate assembly reaches a flat state.

17. A splicing display device, characterized in that: A display device comprising any one of claims 9 to 11.

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