Display modules, display devices, adjustment devices and methods, splicing display equipment

Abstract

This disclosure provides a display module, a display device, an adjustment device, and an adjustment method. The display module includes: a first bracket; a plurality of second brackets disposed on the first bracket; and a display screen comprising a plurality of spliced ​​display substrates, each of which is disposed on a corresponding second bracket. The edges of the second brackets extend beyond the edges of the corresponding display substrates, while the edges of the first brackets do not extend beyond the edges of the display screen. At the same temperature, the sum of the thermal expansions of the plurality of second brackets is less than the thermal expansion of the first bracket.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, specifically to a display module, display device, adjustment device and adjustment method, and splicing display equipment. Background Technology

[0002] Mini LED refers to light-emitting diode (LED) chips with a die size of approximately 100–300 micrometers. Micro-LED refers to light-emitting diode chips with a die size of less than 100 micrometers. Mini-LED / Micro-LED display devices offer advantages such as low power consumption, high brightness, high resolution, high color saturation, fast response time, long lifespan, and high efficiency. Furthermore, when achieving large-size displays, multiple Mini-LED / Micro-LED display devices can be seamlessly spliced ​​together, making them promising for applications in command and control centers, commercial centers, high-end conferences, cinemas, and other large-size display fields. Summary of the Invention

[0003] This disclosure provides a display module, the display module comprising:

[0004] First bracket;

[0005] A plurality of second brackets are disposed on the first bracket;

[0006] The display screen comprises multiple display substrates spliced ​​together, and the display substrates are respectively disposed on the second bracket;

[0007] Wherein, the edge of the second bracket extends beyond the edge of the corresponding display substrate, while 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 of the plurality of second brackets is less than the thermal expansion of the first bracket.

[0008] In some embodiments, the first bracket is provided with an adjustment hole;

[0009] 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.

[0010] In some embodiments, the adjustment component includes:

[0011] A first fastener is detachably mounted in the adjustment hole and is movable along the axial direction of the adjustment hole;

[0012] An elastic element, at least a portion of which is located in the adjustment hole, and both ends of which are connected to the first fastener and the second bracket, respectively.

[0013] In some embodiments, each of the second brackets corresponds to a plurality of the adjustment components, the second brackets are rectangular, and the adjustment components are provided at least at each corner of the second brackets.

[0014] In some embodiments, the display module further includes a second fastener, the second bracket being detachably connected to the first bracket via the second fastener.

[0015] In some embodiments, the display substrate is bonded to the second bracket via an adhesive layer.

[0016] In some embodiments, the first bracket is provided with a first through hole, and the second bracket is also provided with a second through hole;

[0017] The display module further includes: a driving circuit board, which is disposed on the side of the first bracket away from the second bracket; a flexible circuit board is disposed on the 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 and is electrically connected to the driving circuit board.

[0018] In some embodiments, the first bracket includes: a bracket body and a support plate disposed on the bracket body, the support plate being made of the same material as the bracket body; the first through hole is formed in the support plate.

[0019] The bracket body has a hollowed-out portion, the opening area of ​​which is larger than the opening area of ​​the first through hole, and the support plate is disposed opposite to the hollowed-out portion; the first through hole communicates with the hollowed-out portion.

[0020] This disclosure also provides a display device, including the display module and the housing described in the above embodiments, wherein the display module is fixed on the housing, and the second bracket is located on the side of the first bracket away from the housing.

[0021] In some embodiments, the housing is provided with a plurality of first connectors, and the first bracket is provided with a plurality of second connectors. The second connectors are provided in one-to-one correspondence with the plurality of first connectors and are attracted to each other.

[0022] In some embodiments, the second bracket is detachably connected to the first bracket by a second fastener;

[0023] The housing 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 side wall at the end away from the bottom wall; wherein, the bottom wall is provided with a plurality of mounting holes, each mounting hole being disposed opposite to a second fastener.

[0024] This disclosure also provides an adjustment device for adjusting the flatness of the display module described in the above embodiments, the adjustment device comprising:

[0025] The first platform includes a support area for supporting the display module.

[0026] Multiple height-limiting retaining walls are set on the first platform and surround the bearing area; the multiple height-limiting retaining walls are of the same height;

[0027] A height restriction plate assembly, at least a portion of which is disposed on top of the plurality of height restriction retaining walls;

[0028] The height restriction plate assembly has an open state and a fastened state. In the open state, the orthographic projection of the height restriction plate assembly on the first platform does not overlap with the bearing area.

[0029] In the engaged state, a portion of the height limit plate assembly presses against the display module located in the bearing area.

[0030] 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;

[0031] The first retaining wall and the third retaining wall are fixed on the first platform; the second retaining wall is slidably disposed on the first platform and is movable along the first direction; the fourth retaining wall is slidably disposed on the first platform and is movable along the second direction.

[0032] In some embodiments, the height restriction plate assembly includes: a plurality of height restriction plates, wherein the height restriction plate is provided at the top of at least three of the first retaining wall, the second retaining wall, the third retaining wall, and the fourth retaining wall, and the height restriction plate is rotatably connected to the corresponding height restriction retaining wall.

[0033] In some embodiments, the height restriction plate is rotatably connected to the height restriction retaining wall via a pivot, the pivot being located at the edge of the height restriction retaining wall away from the load-bearing area.

[0034] This disclosure also provides an adjustment method for adjusting the flatness of the display module described in the above embodiments, the adjustment method comprising:

[0035] The display module is placed in the bearing area of ​​the adjustment device described in the above embodiments, and the display substrate is attached to the first platform;

[0036] With the height limit plate assembly fastened in the engaged state, the adjustment component 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 limit plate assembly reaches a flat state.

[0037] This disclosure also provides a splicing display device, including the display device described in the above embodiments. Attached Figure Description

[0038] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0039] Figure 1 This is a cross-sectional view of a display module provided in an embodiment of this disclosure.

[0040] Figure 2 This is a rear view of a display module provided in an embodiment of this disclosure.

[0041] Figure 3 This is an exploded view of a display module provided in an embodiment of this disclosure.

[0042] Figure 4 This is a rear view of a display substrate provided in an embodiment of this disclosure.

[0043] Figure 5 This is a schematic diagram of the structure of a display module provided in an embodiment of this disclosure.

[0044] Figure 6A This is a schematic diagram of the structure of a display device provided in an embodiment of this disclosure.

[0045] Figure 6B This is a schematic diagram of another display device provided in an embodiment of the present disclosure.

[0046] Figure 6C This is a schematic diagram of another display device provided in an embodiment of the present disclosure.

[0047] Figure 7 This is a cross-sectional view of an adjustment device and a display module provided in an embodiment of this disclosure.

[0048] Figure 8 This is another cross-sectional view of an adjustment device and display module provided in an embodiment of the present disclosure.

[0049] Figure 9This is a top view of an adjustment device and display module provided in an embodiment of this disclosure. Detailed Implementation

[0050] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0051] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the terminology used is not limited to those described in the specification and may be appropriately replaced as appropriate.

[0052] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms "installed," "connected," and "linked" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or link; a direct connection or an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0053] In a video wall display device, a cabinet is used to house at least one display module. In one example, the display module may include a bracket and a display substrate it supports. The bracket is fixed to the cabinet, and the display substrate is fixed to the side of the bracket away from the cabinet. The display substrate may include a substrate and light-emitting elements disposed on the substrate. The substrate may be a glass substrate.

[0054] Furthermore, in a splicing display device, there can be multiple light-emitting substrates, which are spliced ​​together to form a spliced ​​display. For example, in a splicing display device, there is one cabinet, which carries multiple light-emitting substrates; or, for another example, there are multiple cabinets, each carrying one or more light-emitting substrates.

[0055] The display substrate includes a substrate and multiple light-emitting elements disposed on the substrate. These light-emitting elements can be LEDs (light-emitting diodes), Mini LEDs, Micro LEDs, or Organic Light-Emitting Diodes (OLEDs), etc. The multiple light-emitting elements can emit various colors; for example, they can be divided into multiple repeating units, each repeating unit including a red light-emitting element, a green light-emitting element, and a blue light-emitting element.

[0056] Mini LED refers to LED chips with a die size of approximately 100μm to 300μm, while Micro LED refers to LED chips with a die size of less than 100μm. Mini LED / Micro LED can be used as self-emissive LED displays, offering advantages such as low power consumption, high brightness, high resolution, high color saturation, fast response time, long lifespan, and high efficiency. Mini LED / Micro LED display modules can be spliced ​​together to achieve ultra-large screen displays, showing broad application prospects in large-size display fields such as command and control centers, commercial centers, high-end conferences, and private cinemas.

[0057] Taking Mini LED display substrates as an example, in glass substrate splicing schemes, Mini LED chips are directly mounted on the glass substrate. Because glass substrates are fragile and lack sufficient resistance to external interference, they are prone to impact damage and damage to the light-emitting components at the edges. Therefore, related technologies typically employ a design where the edge of the bracket extends beyond the edge of the glass substrate. However, due to thermal expansion of the bracket, especially when the bracket material is metal, the expansion at the splicing points between multiple brackets causes an increase in the gap between the display areas of adjacent display substrates. This results in dark seams between the displayed images of adjacent display substrates, thus reducing the product's display effect. Therefore, the bracket cannot extend too far beyond the display substrate, but this would lead to poor protection for the display substrate.

[0058] Figure 1 This is a cross-sectional view of a display module provided in an embodiment of this disclosure, such as... Figure 1 As shown, the display module 20 includes a first bracket 1, a plurality of second brackets 2, and a display screen. The plurality of second brackets 2 are disposed on the first bracket 1.

[0059] The display screen includes multiple display substrates 3 spliced ​​together, and the display substrates 3 are arranged one-to-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 are not both 1.

[0060] The display substrate 3 can be a mini-LED display substrate or a micro LED display substrate, and the substrate material of the display substrate 3 can be made of materials such as glass, quartz or plastic. For example, in the embodiments of this disclosure, the substrate is a glass plate.

[0061] In this embodiment, the edge of the first bracket 1 does not extend beyond the edge of the corresponding display substrate 3, the edge of the second bracket 2 extends beyond the edge of the corresponding display substrate 3, and at the same temperature, the sum of the thermal expansion of the plurality of second brackets 2 is less than the thermal expansion of the first bracket 1.

[0062] In this embodiment of the present disclosure, the thermal expansion of the second bracket 2 and the thermal expansion of the first bracket 1 specifically refer to their thermal expansion in the direction parallel to the display substrate 3 after being heated. For example, if both the first bracket 1 and the second bracket 2 are rectangular, then the sum of the thermal expansion 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; 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.

[0063] This embodiment of the disclosure protects the display substrate 3 mounted on the second bracket 2 by providing 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 substrate 3. Furthermore, since the edges of the first bracket 1 do not extend beyond the edges of the display screen, the expansion of the first bracket 1 due to heat will not result in excessive gaps between the display areas of adjacent display substrates 3; and since the sum of the thermal expansion amounts of the plurality of second brackets 2 is less than the thermal expansion amount of the first bracket 1, the thermal expansion of the second brackets 2 will also not result in excessive gaps between the display areas of adjacent display substrates 3, thereby improving the display effect of the display screen.

[0064] Multiple display substrates 3 are arranged one-to-one on multiple second brackets 2, which enables convenient assembly and disassembly of a single display substrate 3.

[0065] In the embodiments disclosed herein, such as Figure 1 As shown, the first bracket 1 is provided with an adjustment hole 4a. The display module 20 also includes an adjustment component 4, at least a portion of which is disposed in the adjustment hole 4a and connected to the second bracket 2. The adjustment component 4 is used 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.

[0066] Due to limitations in the manufacturing process, 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 multiple display substrates 3 in the same display module 20 in the thickness direction until the display surfaces of the multiple display substrates 3 are located on the same plane, thereby improving the display effect of the display module 20.

[0067] In some embodiments, such as Figure 1 As shown, the adjusting assembly 4 includes a first fastener 401 and an elastic member 402. The first fastener 401 is detachably mounted in the adjusting hole 4a and is movable axially along the adjusting hole 4a. At least a portion of the elastic member 402 is located in the adjusting hole 4a, and both ends of the elastic member 402 are connected to the first fastener 401 and the second bracket 2, respectively.

[0068] The elastic element 402 can be a spring or a sheet spring, etc. The adjusting hole 4a may have an internal thread, and the first fastener 401 can be a screw. By rotating the first fastener 401, the first fastener 401 can move axially along the adjusting hole 4a. Of course, in other embodiments, the first fastener 401 can also adopt other structures.

[0069] 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 flat first platform. By moving the first fastener 401 along the axial direction of the adjustment hole, the amount of extension and retraction of the elastic member 402 can be adjusted, thereby adjusting the size of the gap between the first bracket 1 and the second bracket 2. This ensures that the display surfaces of the multiple display substrates 3 in the display module 20 are on the same plane, thus ensuring the flatness of the surface of the display module 20 and improving the display effect.

[0070] Figure 2 This is a rear view of a display module partial structure provided in an embodiment of this disclosure, such as... Figure 2 As shown, in some embodiments, the second bracket 2 is provided with a plurality of adjustment components 4. The second bracket 2 is rectangular, and adjustment components 4 are provided at least at each corner of the second bracket 2, thereby improving the flatness adjustment effect of each display substrate 3.

[0071] In one example, the adjustment component 4 can be provided only at each corner of the second bracket 2, or the adjustment component 4 can be provided at each corner of the second bracket 2 and at the middle of the edge of the second bracket 2, thereby further improving the flatness adjustment effect of the display substrate 3.

[0072] In some embodiments, such as Figure 1As shown, the display module 20 also includes a second fastener 5, through which the second bracket 2 is detachably connected to the first bracket 1. The second fastener 5 can be a screw. For example, a first threaded hole 5a is provided on the first bracket 1, and a second threaded hole 5b is provided on the second bracket 2. The second fastener 5 is screwed sequentially into the first threaded hole 5a and the second threaded hole 5b, thereby connecting the first bracket 1 and the second bracket 2. Of course, in other embodiments, the second fastener 5 can also adopt other structures.

[0073] In the embodiments disclosed herein, such as Figure 1 As shown, the display substrate 3 is bonded to the second bracket 2 via the adhesive layer 6. The display module 20 includes multiple display substrates 3 and multiple second brackets 2, wherein the multiple display substrates 3 and multiple second brackets 2 are bonded one-to-one via the adhesive layer 6, thereby forming a large-area display screen. The adhesive layer 6 can be double-sided adhesive or any adhesive capable of bonding the display substrates 3 and the second brackets 2. Of course, in other embodiments, other connection structures can also be used to fix the display substrates 3 and the second brackets 2 together.

[0074] Figure 3 This is an exploded view of a display module provided in an embodiment of this disclosure. Figure 4 This is a rear view of a display substrate provided in an embodiment of this disclosure. Figure 5 This is a schematic diagram of the structure of a display module provided in an embodiment of this disclosure, such as... Figures 3 to 5 As shown, in some embodiments, the first bracket 1 is provided with a first through hole 7, and the second bracket 2 is also provided with a second through hole 8.

[0075] The display module 20 also includes a drive circuit board 9, wherein the drive circuit board 9 is disposed on the side of the first bracket 1 away from the second bracket 2.

[0076] like Figure 3 and Figure 4 As shown, a flexible circuit board 10 is disposed 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 passes through the first through hole 7 and the second through hole 8 and is electrically connected to the driving circuit board 9. The driving circuit board 9 transmits driving signals to the display substrate 3 through the flexible circuit board 10, thereby realizing the display control of the display substrate 3.

[0077] Specifically, the display substrate 3 includes a display area and a non-display area, with light-emitting elements disposed in the display area; the non-display area includes a pad area, in which multiple pads are disposed, which are used to provide driving signals to the light-emitting elements in the display area. In this embodiment, the electrical connection of one end of the flexible circuit board 10 to the display substrate 3 means that one end of the flexible circuit board 10 is electrically connected to the pads.

[0078] In this embodiment of the disclosure, a connector 9a is provided on the drive circuit board 9 (e.g., connected using a Zif connector or a B2B connector). One end of the flexible circuit board 10 passes through the first through hole 7 and the second through hole 8 and is electrically connected to the adapter 9a. The other end is electrically connected to the pads in the pad area through a connecting line. The connecting line bypasses the side of the substrate, thereby electrically connecting the flexible circuit board 10 to the pads.

[0079] like Figure 5 As shown, in some embodiments, the first bracket 1 includes a bracket body 100 and a support plate 101 disposed on the bracket body 100, and the support plate 101 has 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.

[0080] like Figure 1 As shown, the bracket body 100 has a hollow portion 7a, the opening area of ​​which is larger than the opening area of ​​the first through hole 7. A support plate 101 is disposed opposite to the hollow portion 7a, and the first through hole 7 communicates with the hollow portion 7a. The side of the support plate 101 facing away from the first bracket 1 contacts the second bracket 2. By providing the support plate 101, the contact area between the second bracket 2 and the first bracket 1 can be increased, and the heat from the second bracket 2 can be quickly transferred to the first bracket 1, thereby dissipating the heat to the outside. This minimizes the thermal expansion of the second bracket 2 when the display screen temperature rises, thus minimizing the seams between the display areas of different display substrates 3.

[0081] Figure 6A This is a schematic diagram of the structure of a display device provided in an embodiment of this disclosure. Figure 6B This is a schematic diagram of another display device provided in an embodiment of this disclosure. Figure 6C This is a schematic diagram of the structure of another display device provided in the embodiments of this disclosure, such as... Figures 6A to 6C As shown, the display device includes the display module 20 and the housing 11 as described in the above embodiments. The display module 20 is fixed on 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.

[0082] like Figure 6A As shown, in some embodiments, the housing 11 is provided with a plurality of first connectors (not shown), and the first bracket 1 is provided with a plurality of second connectors 1a (see Figure 2 As shown), multiple second connectors 1a are arranged in a one-to-one correspondence with multiple first connectors and are magnetically attracted.

[0083] The first connector and the second connector 1a are magnetic connectors that connect the housing 11 and the first bracket 1. For example, both the first connector and the second connector 1a can be magnetic. The magnetic properties of their two ends that are close to each other are opposite. Alternatively, one of the first connector or the second connector 1a can be a magnetic component, and the other can be an iron sheet that attracts the magnetic component.

[0084] In practical applications, the number of the first connector and the second connector 1a can be set according to the size of the housing 11 to ensure a stable connection between the housing 11 and the first bracket 1. For example, a second connector 1a is provided at each corner of the first bracket 1; or, for 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; or, for example, a second connector 1a is provided at each corner of the first bracket 2 corresponding to each second bracket 2; or, for 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.

[0085] In this disclosure, the first connector and the second connector 1a are configured as magnetic connectors to facilitate the disassembly of the first bracket 1 from the housing 11.

[0086] In other embodiments, the first connector and the second connector 1a may be replaced by other detachable connectors, such as vacuum suction cups, threaded connectors, or snap-fit ​​fasteners.

[0087] In some embodiments, as shown in FIG6, the housing 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, and the first bracket 1 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 mounting hole 11c being disposed opposite to a second fastener 5.

[0088] like Figure 6B As shown, the operator can also adjust the second fastener 5 by using the adjusting wrench 12 through the mounting hole 11c 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.

[0089] In some embodiments, the display device may include one display module 20, or it may include multiple display modules 20, wherein the multiple display modules 20 are spliced ​​together, such as... Figure 6C As shown, it can form a display device with an ultra-large screen.

[0090] Figure 7 This is a cross-sectional view of an adjustment device and a display module provided in an embodiment of this disclosure. Figure 8This is another cross-sectional view of an adjustment device and display module provided in an embodiment of this disclosure. Figure 9 This is a top view of an adjustment device and display module provided in an embodiment of this disclosure, such as... Figures 7 to 9 As shown, the adjustment device 30 provided in this disclosure is used to adjust the flatness of the display module 20 in the above embodiments. The adjustment device 30 includes a first platform 31, a plurality of height-limiting barriers 32, and a height-limiting plate assembly 33. The first platform 31 includes a bearing area 31a, which is used to support the display module 20.

[0091] Multiple height-limiting retaining walls 32 are installed on the first platform 31 and surround the load-bearing area 31a, and the height of the multiple height-limiting retaining walls 32 is the same. At least a portion of the height-limiting plate assembly 33 is installed on top of the multiple height-limiting retaining walls 32.

[0092] The height restriction board assembly 33 has an open state and a latched state, such as Figure 7 As shown, in the open state, the orthographic projection of the height limit plate assembly 33 on the first platform 31 does not overlap with the bearing area 31a, which is beneficial for placing the display module 20 in the bearing area for flatness adjustment.

[0093] like Figure 8 As shown, in the engaged state, a portion of the height limiting plate assembly 33 presses against the display module 20 located in the support area 31a. Specifically, the display module 20 is inverted on the support area 31a, so that the light-emitting surface of the display module 20 contacts the support area 31a. The height limiting plate assembly 33 presses 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 barrier 32 cannot be fully fitted with the top surface of the height limiting barrier 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 adjusting assembly 4 until the portion of the height limiting plate assembly 33 opposite to the height limiting barrier 32 is fully fitted with the top surface of the height limiting barrier 32. At this point, it 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 by multiple second fasteners 5, thereby ensuring the surface flatness of the display screen and improving the display effect.

[0094] In some embodiments, such as Figures 7 to 9 As shown, the multiple 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 arranged opposite each other in a first direction, while the third retaining wall 32c and the fourth retaining wall 32d are arranged opposite each other in a second direction.

[0095] 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 can be an integral structure, which helps to simplify the production process.

[0096] In some embodiments, the second barrier wall 32b is slidably disposed on the first platform 31 and is movable in a first direction, and the fourth barrier wall 32d is slidably disposed on the first platform 31 and is movable in a second direction. The sliding arrangement of the second barrier wall 32b and the fourth barrier wall 32d allows the adjustment device 30 to support display modules 200 of different sizes, thereby enabling flatness adjustment by the adjustment component 4.

[0097] In some embodiments, a first guide rail and a second guide rail (not shown) may be provided on the first platform 31, a second baffle 32b is provided on the first guide rail, and a fourth baffle 32d is 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 baffles 32b and 32d may have 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 bearing area 31a to support display modules 20 of different sizes by adjusting the positions of the second and fourth baffles 32b and 32d on the first platform 31.

[0098] Furthermore, push rods 40 are fixedly connected to the side of the second retaining wall 32b and the fourth retaining wall 32d away from the bearing area 31a. In actual operation, the push rods 40 can be moved mechanically or manually, thereby pushing the second retaining wall 32b and the fourth retaining wall 32d to slide along the guide groove.

[0099] In some embodiments, such as Figure 9 As shown, the height restriction plate assembly 33 includes: multiple height restriction 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 height restriction plates 330 at their top ends, and the height restriction plates 330 are rotatably connected to the corresponding height restriction retaining walls 32.

[0100] In some embodiments, such as Figure 9As shown, the height restriction plate 330 can be a single strip or composed of multiple strips fixedly connected together. For example, the height restriction plate 330 may include a first strip 330a, a second strip 330b, and a connecting part 330c, wherein the first strip 330a is fixedly connected to the second strip 330b via the connecting part 330c. The first strip 330a is connected to the third retaining wall 32c via a pivot. When adjusting the flatness of the display module 20, the height restriction plate 330 can be flipped so that the second strip 330b presses onto the fourth retaining wall 32d, and the connecting part 330c presses onto the first bracket 1 of the display module 20, thereby limiting the height of the display module 20 and allowing for flatness adjustment of the display module 20.

[0101] The length of each strip can be greater than the length of the display substrate 3. For example, the length of the height limiting plate 330 can be 1.5 to 2 times the length of the display substrate.

[0102] In some embodiments, the height restriction plate 330 is rotatably connected to the height restriction barrier wall 32 via a pivot 34. The pivot 34 is located at the edge of the height restriction barrier wall 32 away from the load-bearing area 31a, thereby ensuring that the height restriction plate 330 can achieve surface contact with the top surface of the height restriction barrier wall 32. The pivot 34 is located on the side of the height restriction barrier wall 32 away from the load-bearing area and can be rotated at a large angle. For example, the pivot 34 can be a 180° rotating pivot, capable of rotating at any angle between 0° and 180°.

[0103] This disclosure also provides an adjustment method for adjusting the flatness of the display module 20 in the above embodiments. The adjustment method includes the following steps:

[0104] S1. Place the display module in the support area of ​​the adjustment device in the above embodiment, and make the display substrate fit with the first platform.

[0105] S2. With the height limit plate assembly fastened, control the adjustment component 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 limit plate assembly reaches a flat state.

[0106] It should be noted that the flat state here means that the height restriction plate assembly 33 can form a surface contact with the top surface of the height restriction barrier wall 32, that is, the height restriction plate assembly 33 is parallel or approximately parallel to the top surface of the height restriction barrier wall 32.

[0107] This disclosure also provides a splicing display device, including the display device described in the above embodiments. In practical applications, the splicing display device may include one display device or multiple spliced ​​display devices. The multiple display devices can achieve different display effects through different splicing methods. For example, multiple display devices can be arranged in one row and multiple columns, multiple rows and one column, or multiple rows and multiple columns.

[0108] Of course, other methods can be used to splice multiple display devices according to actual needs.

[0109] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display module, characterized by The display module comprises: a first bracket; a plurality of second brackets arranged on the first bracket; a display screen comprising a plurality of display substrates arranged one by one on the second brackets; wherein the edges of the second brackets exceed the edges of the corresponding display substrates, and the edges of the first bracket do not exceed the edges of the display screen; the sum of the thermal expansion amounts of the plurality of second brackets is less than the thermal expansion amount of the first bracket at the same temperature; the first bracket comprises a bracket body and a support plate arranged on the bracket body, the thermal conductivity of the support plate is greater than or equal to the thermal conductivity of the bracket body, and the support plate is in contact with the second brackets.

2. The display module of claim 1, wherein, The first bracket is provided with an adjusting hole; the display module further comprises an adjusting assembly, at least a part of the adjusting assembly is arranged in the adjusting hole and connected with the second brackets; the adjusting assembly is used for stretching and contracting in the thickness direction of the display module to adjust the gap between the first bracket and the second brackets.

3. The display module of claim 2, wherein, The adjusting assembly comprises: a first fastener which is detachably mounted in the adjusting hole and can move along the axial direction of the adjusting hole; an elastic member, at least a part of the elastic member is located in the adjusting hole, and the two ends of the elastic member are respectively connected with the first fastener and the second bracket.

4. The display module of claim 2, wherein, Each of the second brackets corresponds to a plurality of adjusting assemblies, the second bracket is rectangular, and the adjusting assembly is arranged at least at each corner of the second bracket.

5. The display module of any one of claims 1 to 4, wherein, The display module further comprises a second fastener, and the second bracket is detachably connected with the first bracket through the second fastener.

6. The display module of any one of claims 1 to 4, wherein, The display substrate is bonded with the second bracket through a bonding layer.

7. The display module of any one of claims 1 to 4, wherein, The first bracket is provided with a first through hole, and the second bracket is further provided with a second through hole; the display module further comprises a driving circuit board, the driving circuit board is arranged on the side of the first bracket away from the second bracket; one side of the display substrate close to the second bracket is provided with a flexible circuit board, one end of the flexible circuit board is electrically connected with the display substrate, and the other end penetrates through the first through hole and the second through hole and is electrically connected with the driving circuit board.

8. The display module of claim 7, wherein, The first through hole is arranged on the support plate; the bracket body has a hollow part, the opening area of the hollow part is greater than the opening area of the first through hole, the support plate is arranged opposite to the hollow part; the first through hole is in communication with the hollow part.

9. A display device comprising: The display module and a box body are provided, the display module is fixed on the box body, and the second bracket is located on the side of the first bracket away from the box body.

10. The display device according to claim 9, wherein The box body is provided with a plurality of first connecting pieces, the first bracket is provided with a plurality of second connecting pieces, the second connecting pieces are arranged one by one corresponding to the plurality of first connecting pieces and are magnetically attracted.

11. The display device according to claim 9, wherein The second bracket is detachably connected with the first bracket through a second fastener; The box comprises a side wall and a bottom wall, one end of the side wall is connected with the bottom wall, the first bracket is supported at one end of the side wall away from the bottom wall; wherein a plurality of mounting holes are arranged on the bottom wall, each mounting hole is arranged opposite to one second fastener.

12. An adjusting device for flatness adjustment of the display module according to any one of claims 2 to 4, characterized in that, The adjusting device comprises: A first platform comprising a bearing area for bearing the display module; A plurality of height-limiting walls arranged on the first platform and surrounding the bearing area; the heights of the plurality of height-limiting walls are consistent; A height-limiting plate assembly, at least part of the height-limiting plate assembly is arranged on the top of the plurality of height-limiting walls; The height-limiting plate assembly has an open state and a buckling 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 buckling state, part of the height-limiting plate assembly is overlaid on the display module located in the bearing area.

13. The adjustment device of claim 12, wherein, The plurality of height-limiting walls comprises a first wall, a second wall, a third wall and a fourth wall; wherein the first wall and the second wall are arranged opposite in a first direction; the third wall and the fourth wall are arranged opposite in a second direction; The first wall and the third wall are fixed on the first platform; the second wall is slidingly arranged on the first platform and can move along the first direction; the fourth wall is slidingly arranged on the first platform and can move along the second direction.

14. The adjustment device of claim 13, wherein, The height-limiting plate assembly comprises a plurality of height-limiting plates, at least three of the first wall, the second wall, the third wall and the fourth wall have the height-limiting plates arranged at the top ends thereof, the height-limiting plates are rotationally connected with the corresponding height-limiting walls.

15. The adjustment device of claim 14, wherein, The height-limiting plate is rotationally connected with the height-limiting wall through a rotating shaft, the rotating shaft is located at the edge of the height-limiting wall away from the bearing area.

16. A regulating method for flatness adjustment of the display module according to any one of claims 2 to 4, characterized in that, The adjusting method comprises: Placing the display module in the bearing area of the adjusting device according to any one of claims 12 to 15, and making the display substrate adhere to the first platform; In the buckling state of the height-limiting plate assembly, controlling the adjusting assembly to stretch 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.

17. A tiled display apparatus, comprising: The display device comprises any one of claims 9 to 11.

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