Display module and display apparatus

Abstract

Provided in the present disclosure are a display module and a display apparatus. The display module comprises: a display panel, which display panel comprises: a back plate; a first circuit board, wherein the first circuit board is arranged on the side of the back plate that is away from the display panel, the first circuit board extends in a first direction, and the first circuit board comprises a first side and a second side that are arranged opposite each other in a second direction; a flexible clamping assembly, wherein the flexible clamping assembly comprises a substrate, a first flexible clamping member, and a second flexible clamping member, the first flexible clamping member and the second flexible clamping member clamping the first circuit board and allowing the displacement of the first circuit board within a first preset range in the second direction; and conductive foam, wherein the conductive foam is arranged on the side of the back plate that is away from the display panel, at least one corner of the first circuit board is bonded with the back plate by means of the conductive foam, and the conductive foam allows the displacement of the first circuit board within a second preset range in the first direction.

Description

Display module and display device Technical Field

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

[0002] With the development of display technology, large-size strip screens are gradually entering people's lives and work. Large-size strip screens are narrow strip displays with a longer side much longer than a shorter side. For example, an 86-inch strip screen can have a longer side of up to 2.2 meters and a shorter side of only 0.36 meters.

[0003] Due to their structural characteristics, large-size bar screens are currently widely used in advertising and transportation (such as subway and bus guide displays).

[0004] Summary of the Invention

[0005] The present disclosure provides a display module and a display device.

[0006] According to a first aspect of the present disclosure, a display module is provided, comprising:

[0007] a display panel, the display panel comprising a display area and a peripheral area at least partially surrounding the display area, the peripheral area comprising a display binding end;

[0008] a back plate, the back plate being arranged on the back side of the display panel;

[0009] a first circuit board, the first circuit board being disposed on a side of the back plate facing away from the display panel, the first circuit board extending along a first direction, the first circuit board comprising a first side and a second side oppositely disposed along a second direction, the first side being electrically connected to the display binding terminal, the second side being configured to be electrically connected to a display driver chip, and the first direction and the second direction intersecting;

[0010] a flexible hook assembly, the flexible hook assembly being disposed on a side of the back plate facing away from the display panel, the flexible hook assembly comprising: a base, a first flexible hook, and a second flexible hook, the base being fixedly connected to the back plate, the first flexible hook and the second flexible hook being disposed on a side of the base facing away from the display panel, the first flexible hook and the second flexible hook being disposed opposite each other along the second direction, the first flexible hook and the second flexible hook clamping the first circuit board and allowing the first circuit board to move within a first preset range in the second direction;

[0011] Conductive foam, wherein the conductive foam is arranged on a side of the back plate away from the display panel, at least one corner of the first circuit board is bonded to the back plate through the conductive foam, and the conductive foam allows the first circuit board to be displaced within a second preset range in the first direction.

[0012] According to an embodiment of the present disclosure, the portion of the first circuit board clamped by the first flexible hook and the second flexible hook includes a first fixing portion;

[0013] In the thickness direction of the display module, the first flexible hook overlaps with the first fixing portion, and the overlapping area has a first size in the second direction;

[0014] In the thickness direction of the display module, the second flexible hook overlaps with the first fixing portion, and the overlapping area has a second size in the second direction;

[0015] The first fixing portion has a third size in the second direction, and a ratio of the sum of the first size and the second size to the third size is greater than or equal to 1 / 3 and less than or equal to 1 / 2.

[0016] According to an embodiment of the present disclosure, the first size is set to 3.5 mm to 4.5 mm, the second size is set to 3.5 mm to 4.5 mm, and the third size is set to 15 mm to 25 mm.

[0017] According to an embodiment of the present disclosure, the first flexible hook includes a first pressing portion and a first connecting portion, the first pressing portion being connected to the base via the first connecting portion, and the second flexible hook includes a second pressing portion and a second connecting portion, the second pressing portion being connected to the base via the second connecting portion, and in the thickness direction of the display module, the first pressing portion and the second pressing portion overlap with the first fixing portion;

[0018] In the second direction, a first gap is formed between the first fixing portion and the first connecting portion, and a second gap is formed between the first fixing portion and the second connecting portion;

[0019] In the thickness direction of the display module, a third gap is formed between the first fixing portion and either the first pressing portion or the second pressing portion;

[0020] Wherein, either the first gap or the second gap is smaller than the third gap.

[0021] According to an embodiment of the present disclosure, the first gap is set to 0.1 mm to 0.2 mm, the second gap is set to 0.1 mm to 0.2 mm, and the third gap is set to 0.15 mm to 0.25 mm.

[0022] According to an embodiment of the present disclosure, the first circuit board is electrically connected to the display binding end through a plurality of chip-on-films, and the plurality of chip-on-films are arranged along the first direction;

[0023] The display module includes a plurality of flexible hook components, which are arranged along the first direction. At least one flexible hook component is disposed between at least two adjacent chip-on-films. In the first direction, a spacing between two adjacent flexible hook components is set to be 250 mm to 350 mm.

[0024] The dimension of at least one of the flexible hook components in the first direction is set to 8 mm to 12 mm.

[0025] According to an embodiment of the present disclosure, the display module further includes a front frame, the front frame including a first frame body, the first frame body extending along the thickness direction of the display module, and in the second direction, the first frame body is located on a side of the back plate away from the center of the display module;

[0026] In the second direction, there is a first distance between the flexible hook assembly and the first frame, a second distance between the back plate and the first frame, and a third distance between the display panel and the first frame;

[0027] The first interval is larger than the second interval and smaller than the third interval.

[0028] According to an embodiment of the present disclosure, the backplane includes a backplane body and a first bending portion and a second bending portion provided on the backplane body, the first bending portion and the second bending portion are bent toward the display panel, and the first bending portion and the second bending portion are arranged opposite to each other in the second direction;

[0029] In the second direction, the first circuit board is located between the first bending portion and the second bending portion, and the distance between the first bending portion and the first circuit board is smaller than the distance between the second bending portion and the first circuit board;

[0030] In the thickness direction of the display module, the first flexible hook overlaps with the first bending portion.

[0031] According to an embodiment of the present disclosure, the second side of the first circuit board includes a first corner and a second corner arranged opposite to each other along the first direction, at least one of the first corner and the second corner includes a metal exposed area, and the conductive foam at least partially covers the metal exposed area.

[0032] According to an embodiment of the present disclosure, the size of the conductive foam in the first direction is set to 4 mm to 6 mm, the size of the conductive foam in the second direction is set to 4 mm to 6 mm, and the thickness of the conductive foam is set to 1 mm to 3 mm.

[0033] According to an embodiment of the present disclosure, the display module further includes an optical film and a plastic frame. The optical film is disposed between the back plate and the display panel. The optical film includes a third side and a fourth side disposed opposite to each other along the first direction. The third side is provided with an ear-hanging hole.

[0034] The plastic frame includes a second frame body, the second frame body extends along the thickness direction of the display module, and the second frame body is located on a third side of the optical film material away from the center of the optical film material;

[0035] The plastic frame also includes a hanging ear structure arranged on the second frame body, the hanging ear structure extends toward the optical film material, and in the thickness direction of the display module, the hanging ear structure overlaps with the hanging ear hole, and in the overlapping area, the hanging ear structure passes through the hanging ear hole.

[0036] According to an embodiment of the present disclosure, a hanging ear protrusion is further fixedly provided on the third side, and the hanging ear protrusion is located on a side of the hanging ear hole away from the center of the optical film material, and the display module further includes an auxiliary fixing tape;

[0037] The back panel includes a back panel body and a third bending portion and a fourth bending portion provided on the back panel body, the third bending portion and the fourth bending portion being bent toward the display panel, and the third bending portion and the fourth bending portion being arranged opposite to each other in the first direction;

[0038] A side of the third bent portion facing away from the center of the display module is flush with the fourth side of the optical film material;

[0039] The auxiliary fixing tape includes a winding portion and a first bonding portion. The winding portion passes through the ear-hanging hole and is wound around the protruding portion of the ear-hanging hole. The first bonding portion is bonded to the fourth bending portion.

[0040] According to an embodiment of the present disclosure, a first groove is provided on a side of the fourth bending portion close to the display panel, the first groove is recessed toward the back panel body, and the ear hook protrusion is overlapped in the first groove.

[0041] According to an embodiment of the present disclosure, the second frame is located on a side of the fourth bent portion away from the center of the display module;

[0042] The first bonding portion is bonded to a surface of the fourth bending portion facing the second frame body, and a gap is provided between the first bonding portion and the second frame body.

[0043] According to an embodiment of the present disclosure, the auxiliary fixing tape further includes an intermediate portion located between the wrapping portion and the first bonding portion, and the end of the wrapping portion is bonded to the intermediate portion after passing around the edge of the ear hanging hole;

[0044] The fourth bending portion includes a second groove, the second groove is recessed toward a side away from the second frame body, and the end of the winding portion is at least partially located in the second groove.

[0045] According to an embodiment of the present disclosure, a size of the first bonding portion in the second direction is greater than a size of the middle portion in the second direction, and a transition corner is provided at the junction of the first bonding portion and the middle portion, and the transition corner includes an arc-shaped corner.

[0046] According to an embodiment of the present disclosure, the first bonding portion is bonded to two adjacent side surfaces of the fourth bending portion.

[0047] According to an embodiment of the present disclosure, the optical film material includes a composite prism and a diffuser;

[0048] In the first direction, the diffuser includes a first surface and a second surface arranged opposite to each other along the thickness direction of the diffuser, the first surface is located on a side of the second surface close to the composite prism, and a first light shielding structure is provided on the first surface;

[0049] The first surface includes a hanging ear side and an opposite hanging ear side that are oppositely arranged along the first direction. The hanging ear hole is located on the hanging ear side, and the first light shielding structure is located on the opposite hanging ear side.

[0050] According to an embodiment of the present disclosure, a size of the first light shielding structure in the first direction is set to 2 mm to 4 mm.

[0051] According to an embodiment of the present disclosure, the first light-shielding structure includes a black tape or a printed black edge.

[0052] According to an embodiment of the present disclosure, the optical film material includes a single prism and a diffuser, the ear hole passes through the single prism and the diffuser, and the heat shrinkage rate of the single prism is the same as that of the diffuser.

[0053] According to an embodiment of the present disclosure, the back plate includes a fifth side and a sixth side arranged opposite to each other along the second direction, the flexible hook assembly is located on the fifth side, and the display module further includes:

[0054] a light source assembly, the light source assembly being disposed on the sixth side of the back plate, the light source assembly extending along the first direction, the light emitting direction of the light source assembly intersecting the thickness direction of the display module, and the light source assembly including a first end and a second end disposed opposite to each other along the first direction;

[0055] The supporting foam extends along the first direction, and comprises a third end and a fourth end oppositely arranged along the first direction, the first end is flush with the third end, and the second end is flush with the fourth end.

[0056] According to an embodiment of the present disclosure, the display module further includes a light guide plate and a reflective sheet;

[0057] The reflective sheet includes a third surface and a fourth surface arranged opposite to each other along the thickness direction of the reflective sheet, the third surface is located on a side of the fourth surface close to the light guide plate, and a second light shielding structure is provided on the third surface;

[0058] The third surface includes a seventh side and an eighth side opposite to each other in the second direction. The eighth side is located on a side of the seventh side close to the light source assembly. The second light shielding structure is located on the eighth side.

[0059] According to an embodiment of the present disclosure, a size of the second light shielding structure in the first direction is set to 1 mm to 3 mm, and a size of the second light shielding structure in the second direction is set to 2 mm to 4 mm.

[0060] According to an embodiment of the present disclosure, the display module further includes a third light shielding structure, and the third light shielding structure is integrally connected to the second light shielding structure;

[0061] The back plate includes a fifth surface and a sixth surface that are arranged opposite to each other along the thickness direction of the back plate. The fifth surface is located on a side of the sixth surface close to the display panel, and the third light shielding structure is located on the sixth surface.

[0062] According to an embodiment of the present disclosure, the size of the third light-shielding structure in the first direction is set to 3 mm-5 mm.

[0063] According to an embodiment of the present disclosure, the display module includes a light source assembly and a plastic frame, the light source assembly includes a plurality of light-emitting devices, the plastic frame includes a plurality of sub-frames, the plurality of sub-frames include a first sub-frame and a second sub-frame arranged opposite to each other along the first direction, and a plurality of third sub-frames located between the first sub-frame and the second sub-frame;

[0064] The third sub-frame includes a first splicing portion and a second splicing portion arranged opposite to each other along the first direction, and the first splicing portion of one of the two adjacent third sub-frames in the first direction is spliced ​​with the second splicing portion of the other;

[0065] The first splicing portion includes a first side wall, and the second splicing portion includes a second side wall. The first side wall and the second side wall are both located on a side of the light source assembly close to the center of the display module. A first retaining wall is provided on a side of the first side wall facing away from the center of the display module, and a second retaining wall is provided on a side of the second side wall facing away from the center of the display module.

[0066] The first retaining wall and the second retaining wall overlap in the thickness direction of the display module, and the overlapping area overlaps with at least one of the light-emitting devices in the thickness direction of the display module.

[0067] According to an embodiment of the present disclosure, an overlapping area of ​​the first retaining wall and the second retaining wall has a first design dimension in the first direction, and the first design dimension is greater than or equal to 1 mm-2.5 mm.

[0068] According to an embodiment of the present disclosure, the display module further includes a front frame, and in an overlapping area of ​​two adjacent third sub-frames, a limiting structure is filled in a gap between one of the two adjacent third sub-frames and the front frame.

[0069] According to a second aspect of the present disclosure, a display device is provided, comprising the above-mentioned display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The above contents and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0071] Figures 1 and 2 schematically show a pair of scaled display modules;

[0072] FIG3 schematically shows a schematic diagram of the connection between the first circuit board and the display panel in a pair of proportions;

[0073] FIG4 schematically shows a schematic diagram of the connection between the first circuit board and the backplane in a pair of proportions;

[0074] 5 and 6 schematically illustrate schematic diagrams of a display module according to an embodiment of the present disclosure;

[0075] FIG7 schematically shows an exploded view of a display module according to an embodiment of the present disclosure;

[0076] FIG8 schematically shows a plan view of a display panel according to an embodiment of the present disclosure;

[0077] FIG9 schematically shows a schematic diagram of connecting a first circuit board and a display panel according to an embodiment of the present disclosure;

[0078] FIG10 schematically shows a schematic diagram of the connection between the first circuit board and the backplane according to an embodiment of the present disclosure;

[0079] 11 and 12 schematically show cross-sectional views of FIG. 10 along section line BB';

[0080] FIG13 schematically shows a schematic diagram of position A in FIG10 ;

[0081] FIG14 schematically shows a plan view of an optical film according to an embodiment of the present disclosure;

[0082] FIG15 schematically shows a cross-sectional view along the section line CC' in FIG5;

[0083] FIG16A schematically shows a schematic diagram of an auxiliary fixing tape in an embodiment of the present disclosure;

[0084] FIG16B schematically shows a schematic diagram of a first groove in an embodiment of the present disclosure;

[0085] FIG17 schematically shows a schematic diagram of the auxiliary fixing tape after being unfolded in an embodiment of the present disclosure;

[0086] 18 and 19 schematically illustrate a first light shielding structure in an embodiment of the present disclosure;

[0087] FIG20 schematically shows a schematic diagram of light leakage caused by the shrinkage of the composite prism and the diffuser;

[0088] FIG21 schematically shows a schematic diagram of a light source assembly and supporting foam in an embodiment of the present disclosure;

[0089] FIG22 schematically shows a cross-sectional view along the section line DD′ in FIG21 ;

[0090] FIG23 schematically shows a schematic diagram of the reflective sheet being exposed after the light guide plate is retracted in an embodiment of the present disclosure;

[0091] FIG24 schematically shows a cross-sectional view along the section line EE′ in FIG5 ;

[0092] FIG25 schematically shows a cross-sectional view along the section line FF′ in FIG5 ;

[0093] FIG26 schematically shows a schematic diagram of a retaining wall structure in an embodiment of the present disclosure;

[0094] FIG27 schematically shows a schematic diagram of light shielding by a retaining wall in an embodiment of the present disclosure;

[0095] FIG28 schematically shows a schematic diagram of the gap between the third sub-frame and the front frame in an embodiment of the present disclosure;

[0096] FIG29 schematically shows a schematic diagram of a limiting structure in an embodiment of the present disclosure;

[0097] FIG30 schematically shows a second exploded view of the display module in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0098] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0099] It should be noted that in the drawings, the sizes and relative sizes of elements may be exaggerated for clarity and / or descriptive purposes. Thus, the sizes and relative sizes of the individual elements are not necessarily limited to those shown in the drawings. In the specification and drawings, the same or similar reference numerals indicate the same or similar parts.

[0100] When an element is described as being "on" another element, "connected to" another element, or "coupled to" another element, the element may be directly on the other element, directly connected to the other element, or directly coupled to the other element, or there may be an intermediate element. However, when an element is described as being "directly on" another element, "directly connected to" another element, or "directly coupled to" another element, there is no intermediate element. Other terms and / or expressions used to describe the relationship between elements should be interpreted in a similar manner, for example, "between..." versus "directly between...", "adjacent" versus "directly adjacent," or "on..." versus "directly on...", etc. In addition, the term "connected" may refer to a physical connection, an electrical connection, a communication connection, and / or a fluid connection. In addition, the X-axis, Y-axis, and Z-axis are not limited to the three axes of a rectangular coordinate system, and may be interpreted in a broader sense. For example, the X-axis, Y-axis, and Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purposes of this disclosure, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as XYZ, XY, YZ, and ZZ. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0101] It should be noted that although the terms "first," "second," etc. may be used herein to describe various parts, components, elements, regions, layers, and / or portions, these parts, components, elements, regions, layers, and / or portions should not be limited by these terms. Rather, these terms are used to distinguish one part, component, element, region, layer, and / or portion from another. Thus, for example, the first part, first member, first element, first region, first layer, and / or first portion discussed below may be referred to as a second part, second member, second element, second region, second layer, and / or second portion without departing from the teachings of the present disclosure.

[0102] For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," etc., may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures. It should be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features.

[0103] As used herein, the terms "substantially," "about," "approximately," "roughly," and other similar terms are used as terms of approximation rather than as terms of degree, and are intended to account for the inherent deviations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art. To account for factors such as process fluctuations, measurement problems, and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), "about" or "approximately" as used herein are inclusive of the stated value and mean within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0104] Those skilled in the art should understand that, in this document, unless otherwise specified, the expression "height" or "thickness" refers to the dimension along the surface of each film material perpendicular to the display module, that is, the dimension along the light emitting direction of the display module, or the dimension along the normal direction of the display module.

[0105] In a comparative example, a display module 100 is provided. Figures 1 and 2 schematically illustrate the display module in the comparative example. Figure 1 shows the display module in a horizontal orientation, while Figure 2 shows the display module in a vertical orientation. Referring to Figures 1 and 2 , the display module 100 in this comparative example is a large-sized bar-type display module 100. The display module 100 has two short sides arranged oppositely along a first direction X and two long sides arranged oppositely along a second direction Y. The length d11 of the long side of the display module 100 is 2.2 meters, and the length d12 of the short side of the display module 100 is 0.36 meters.

[0106] FIG3 schematically shows a schematic diagram of the connection between the first circuit board and the display panel in a pair of proportions, and FIG4 schematically shows a schematic diagram of the connection between the first circuit board and the backplane in a pair of proportions.

[0107] 3 and 4 , the display module 100 in the comparative example includes a display panel 110, a back panel 120 and a first circuit board 130, wherein the back panel 120 is arranged on the back side of the display panel 110, and the first circuit board 130 is arranged on the side of the back panel 120 away from the display panel 110. One side of the first circuit board 130 is electrically connected to the display panel 110, and the other side is electrically connected to the display driver chip 150 through the connecting structure 140, so as to transmit the electrical signal on the display driver chip 150 to the display panel 110. For example, one side of the first circuit board 130 can be electrically connected to the display panel 110 through a flexible connector such as a chip-on-film 160.

[0108] In this comparative example, the display module 100 adopts a "landscape display" mode, where "landscape display" mode may mean that when the human eye views the display module 100, the display module 100 is in a horizontal position as shown in FIG1 . Referring to FIG1 , in "landscape display" mode, the two long sides of the display module 100 extend horizontally, and the two short sides extend vertically.

[0109] To expand the application scenarios of the display module 100, it is desirable for the display module 100 to have more display modes. For example, a "portrait display" mode may be added to the display module 100. The "portrait display" mode may mean that when the display module 100 is viewed by the human eye, the display module 100 is in a vertical position as shown in FIG2 . Referring to FIG2 , in the "portrait display" mode, the two long sides of the display module 100 extend in the vertical direction in FIG2 , and the two short sides extend in the horizontal direction in FIG2 .

[0110] In this comparative example, the first circuit board 130 is connected to the back panel 120 via rigid fasteners (e.g., screws or rigid clips). Due to the large size of the display panel 110, in actual use, the display panel 110 is affected by gravity and sinks to a certain extent. Since the first circuit board 130 is connected to the back panel 120 via rigid fasteners, sinking of the display panel 110 will cause the chip-on-film 160 located between the first circuit board 130 and the display panel 110 to be pulled.

[0111] Moreover, since the display module 100 is a large-size bar-type display module 100, the length of its long side is much greater than the length of its short side. Therefore, compared with the "horizontal display" mode, the display panel 110 sinks more in the "vertical display" mode, and the severe pulling of the cover chip film 160 will cause the display module to have obvious black state light leakage problems.

[0112] In view of this, embodiments of the present disclosure provide a display module comprising: a display panel, a backplane, a first circuit board, a flexible hook assembly, and conductive foam. The display panel comprises a display area and a peripheral area at least partially surrounding the display area. The display area comprises a plurality of pixel units arranged in an array along a first direction and a second direction, the first direction and the second direction intersecting. The peripheral area comprises a display binding terminal. The backplane is disposed on the back side of the display panel. The first circuit board is disposed on a side of the backplane facing away from the display panel. The first circuit board extends along the first direction and comprises a first side and a second side disposed opposite each other along a second direction. The first side is electrically connected to the display binding terminal, and the second side is configured to electrically connect to a display driver chip. The flexible hook assembly is disposed on a side of the backplane facing away from the display panel. The flexible hook assembly comprises a base, a first flexible hook, and a second flexible hook. The base is fixedly connected to the backplane. The first and second flexible hooks are disposed on a side of the base facing away from the display panel. The first and second flexible hooks are disposed opposite each other along the second direction. The first and second flexible hooks clamp the first circuit board and allow the first circuit board to move within a first predetermined range in the second direction. The conductive foam is arranged on a side of the back plate away from the display panel. At least one corner of the first circuit board is bonded to the back plate through the conductive foam. The conductive foam allows the first circuit board to move in the first direction within a second preset range.

[0113] Through the above-described method, the first circuit board can be given a certain degree of freedom of displacement in both the first and second directions. In this way, whether in "landscape display" mode or "portrait display" mode, when the display panel sinks, the first circuit board can also move accordingly, thereby alleviating the pulling on the chip-on-film. At the same time, the combination of the flexible hook assembly and the conductive foam can allow the first circuit board to move to a greater extent in the first direction (compared to the displacement in the second direction), thereby reducing or even eliminating the problem of severe pulling on the chip-on-film in "portrait display" mode, and further improving the black state light leakage problem caused by this in "portrait display" mode.

[0114] The display module of the disclosed embodiment will be described in detail below with reference to FIG. 5 to FIG. 13 .

[0115] FIG5 and FIG6 schematically illustrate a display module according to an embodiment of the present disclosure. Referring to FIG5 and FIG6 in combination, the display module 200 according to the embodiment of the present disclosure may be a large-size bar-type display module 200. The display module has two short sides arranged oppositely along a first direction X and two long sides arranged oppositely along a second direction Y. The first direction X and the second direction Y intersect. The first direction X may be the horizontal direction in FIG5 , and the second direction Y may be the vertical direction in FIG5 . That is, the first direction X and the second direction Y are perpendicular to each other.

[0116] In the embodiment of the present disclosure, the long side of the display module is much longer than the short side. For example, the long side length d21 of the display module is 2m to 2.4m, for example, the long side length d21 of the display module is 2.2m. The short side length d22 of the display module is 0.33m to 0.39m, for example, the short side length d22 of the display module is 0.36m.

[0117] In an embodiment of the present disclosure, the display module 200 may include a "horizontal display" mode and a "vertical display" mode. The specific contents of the "horizontal display" mode and the "vertical display" mode can be found in the above examples, so they will not be repeated here.

[0118] FIG7 schematically shows an exploded view of a display module according to an embodiment of the present disclosure, and FIG8 schematically shows a plan view of a display panel according to an embodiment of the present disclosure.

[0119] 7 and 8 , the display module in the embodiment of the present disclosure includes a display panel 210 . The display panel 210 includes a display area AA and a peripheral area NA located on at least one side of the display area AA.

[0120] The display area AA can have various shapes. For example, the display area AA can be provided in various shapes, such as a polygon (e.g., a rectangle) with straight edges, a circle or an ellipse with curved edges, or a semicircle or a semiellipse with both straight and curved edges. In the embodiment of the present disclosure, the display area AA is provided as a region having a quadrilateral shape with straight edges. It should be understood that this is merely an exemplary embodiment of the present disclosure and is not intended to limit the present disclosure.

[0121] The display panel 210 may further include a substrate 200 and a plurality of pixel units P disposed on the substrate 200 and located in the display area AA. The plurality of pixel units P may be arranged in an array along a first direction X and a second direction Y. Each pixel unit P may include a plurality of sub-pixels PX. For example, the pixel unit P may include a first sub-pixel, a second sub-pixel, and a third sub-pixel. For example, the first sub-pixel, the second sub-pixel, and the third sub-pixel may be set as a red sub-pixel, a green sub-pixel, and a blue sub-pixel, respectively. However, the embodiments of the present disclosure are not limited thereto.

[0122] 8 , a plurality of sub-pixels PX may be arranged in an array along a first direction X and a second direction Y. However, the embodiments of the present disclosure are not limited thereto. For ease of description, the embodiments of the present disclosure refer to the plurality of sub-pixels PX arranged along the first direction X as a row of sub-pixels PX, and the plurality of sub-pixels PX arranged along the second direction Y as a column of sub-pixels PX.

[0123] The display panel 210 further includes a plurality of gate lines GL and a plurality of data lines DL disposed on the base substrate 200 and located at least in the display area AA. The plurality of data lines DL extend along a first direction X, and the plurality of gate lines GL extend along a second direction Y. For example, one sub-pixel PX is connected to one data line DL and one gate line GL, sub-pixels PX in the same row are connected to the same gate line GL, sub-pixels PX in different rows are connected to different gate lines GL, sub-pixels PX in the same column are connected to the same data line DL, and sub-pixels PX in different columns are connected to different data lines DL.

[0124] The peripheral area NA may be provided at least on one side of the display area AA. For example, the peripheral area NA may surround the periphery of the display area AA. In an embodiment of the present disclosure, the peripheral area NA may include a vertical portion extending in a first direction X and a horizontal portion extending in a second direction Y.

[0125] The display panel 210 may further include a gate driving circuit 21 and a display bonding terminal PAD1 disposed on the base substrate 200 and located in the peripheral area NA.

[0126] The gate drive circuit 21 may be located on at least one side of the display area AA. In the embodiment shown in FIG8 , the gate drive circuit 21 is respectively located on the left and right sides of the display area AA. It should be noted that the left and right sides may be the left and right sides of the display panel 210 when viewed by the human eye in the “horizontal display” mode. The display binding terminal PAD1 may be located on at least one side of the display area AA. In the embodiment shown in FIG8 , the display binding terminal PAD1 is located on the upper side of the display area AA. It should be noted that the upper side may be the upper side of the display panel 210 when viewed by the human eye in the “horizontal display” mode.

[0127] Figure 9 schematically illustrates a schematic diagram of the connection between the first circuit board and the display panel according to an embodiment of the present disclosure, and Figure 10 schematically illustrates a schematic diagram of the connection between the first circuit board and the backplane according to an embodiment of the present disclosure. It should be noted that for clarity, the first circuit board is made transparent in Figure 10.

[0128] With reference to Figures 8 to 10 , the display bonding terminal PAD1 is configured to be electrically connected to the display driver chip IC. For example, the display bonding terminal PAD1 can be electrically connected to the display driver chip IC via a chip-on-film (COF) and a first circuit board 230. The display driver chip IC includes a data driver circuit, which is configured to sequentially latch input data according to a clock signal, convert the latched data into analog signals, and then input the signals to the data lines DL of the display panel 210. The gate driver circuit 21 is typically implemented by a shift register, which converts the clock signal into on / off voltages and outputs them to the gate lines GL of the display panel 210.

[0129] It should be noted that although Figure 8 shows that the gate driving circuit 21 is located on the left and right sides of the display area AA and the display binding terminal PAD1 is located on the upper side of the display area AA, the embodiments of the present disclosure are not limited to this. The gate driving circuit 21 and the display binding terminal PAD1 can be located at any suitable position in the peripheral area NA.

[0130] For example, the gate driver circuit 21 can utilize GOA technology, also known as Gate Driver on Array (GOA). In GOA technology, the gate driver circuit 21 is directly disposed on the array substrate, replacing an external chip. Each GOA unit functions as a shift register, with each shift register stage connected to a gate line GL. Each stage of the shift register sequentially outputs scan signals, achieving progressive scanning of the sub-pixels PX. In some embodiments, each stage of the shift register can also be connected to multiple gate lines GL. This adapts to the development trend of high resolution and narrow bezels for the display panel 210.

[0131] 7 , the display module 200 further includes a back plate 220, which is disposed on the back side of the display panel 210. In the embodiment of the present disclosure, the display panel 210 may be a liquid crystal display panel 210, which has a light-emitting side and a light-incident side. The back side of the display panel 210 may refer to the light-incident side of the display panel 210. The light-emitting side of the display panel 210 is used to display images. Therefore, the light-emitting side of the display panel 210 may also be referred to as the display side.

[0132] In an embodiment of the present disclosure, the display panel 210 includes a liquid crystal layer and pixel electrodes and a common electrode disposed on at least one side of the liquid crystal layer. The pixel electrodes and the common electrode are capable of applying a first electric field in response to a drive signal. Liquid crystals in the liquid crystal layer are deflected by the first electric field, thereby achieving a display function.

[0133] Referring to Figure 10, the display module 200 also includes a first circuit board 230, which is arranged on the side of the back plate 220 away from the display panel 210. The first circuit board 230 extends along the first direction X. The first circuit board 230 includes a first side S1 and a second side S2 arranged opposite to each other along the second direction Y. The first side S1 is electrically connected to the display binding end, and the second side S2 is used to be electrically connected to the display driver chip IC.

[0134] In an embodiment of the present disclosure, the shape of the first circuit board 230 may include a strip shape, and the first side S1 and the second side S2 of the first circuit board 230 may refer to two long sides of the first circuit board 230 that are oppositely arranged along the second direction Y. For example, the first side S1 of the first circuit board 230 may be the upper side of the first circuit board 230 in Figure 10, and the second side S2 of the first circuit board 230 may be the lower side of the first circuit board 230 in Figure 10. The first side S1 of the first circuit board 230 may be electrically connected to the display binding terminal PAD via a chip-on-film (COF). For example, the first side S1 of the first circuit board 230 may be electrically connected to the display binding terminal PAD via a chip-on-film (COF).

[0135] The display module 200 further includes a flexible hook assembly 240 . The flexible hook assembly 240 is disposed on a side of the back plate 220 facing away from the display panel 210 .

[0136] 11 and 12 schematically show cross-sectional views of FIG. 10 along the section line BB′.

[0137] 11 and 12 , the flexible hook assembly 240 includes a base 241, a first flexible hook 242, and a second flexible hook 243. The base 241 is fixedly connected to the back panel 220. The first flexible hook 242 and the second flexible hook 243 are arranged on the side of the base 241 away from the display panel 210. The first flexible hook 242 and the second flexible hook 243 are arranged relative to each other along the second direction Y. The first flexible hook 242 and the second flexible hook 243 clamp the first circuit board 230 and allow the first circuit board 230 to move within a first preset range in the second direction Y.

[0138] In the embodiment of the present disclosure, the base 241 can be fixed to the back plate 220 by bonding or screws, etc., and the specific method can be determined according to actual needs and is not limited here. Referring to Figure 11, the display panel 210 is arranged on the right side of the back plate 220, and the first flexible hook 242 and the second flexible hook 243 are arranged on the left side of the back plate 220. The first flexible hook 242 and the second flexible hook 243 are arranged opposite to each other, and the two are respectively pressed on the left side surface of the first circuit board 230 to clamp the first circuit board 230. The first flexible hook 242 and the second flexible hook 243 are flexible, so that they can be deformed to a certain extent along the second direction Y. Then, the deformed first flexible hook 242 and the second flexible hook 243 can make the first circuit board 230 move a small amount in the second direction Y, that is, allow the first circuit board 230 to move in the second direction Y within a first preset range. The size of the first preset range is positively correlated with the degree of deformability of the first flexible hook 242 and the second flexible hook 243. Therefore, the size of the first preset range can be controlled by the material of the first flexible hook 242 and the second flexible hook 243. For example, the first flexible hook 242 and the second flexible hook 243 can be made of rubber, which has an appropriate hardness. This ensures the freedom of movement of the first circuit board 230 in the second direction Y while preventing the first flexible circuit board from tripping due to excessive deformation of the first flexible hook 242 (second flexible hook 243).

[0139] FIG. 13 schematically shows a schematic diagram of position A in FIG. 10 .

[0140] Referring to Figure 13, the display module 200 also includes a conductive foam 250, which is arranged on the side of the back plate 220 away from the display panel 210. At least one corner of the first circuit board 230 is bonded to the back plate 220 through the conductive foam 250, and the conductive foam 250 allows the first circuit board 230 to be displaced within a second preset range in the first direction X.

[0141] In the embodiment of the present disclosure, a conductive foam 250 is sandwiched between the backplate 220 and the first circuit board 230. Adhesive is applied to both the side of the conductive foam 250 facing the backplate 220 and the side facing the first circuit board 230, enabling the conductive foam 250 to bond the backplate 220 and the first circuit board 230 together. Exposed metal areas may be provided at the corners of the first circuit board 230. The conductive foam 250 is conductive and can be pressed against the exposed metal areas to electrically connect the components and traces on the exposed metal areas to the ground structure on the backplate 220, thereby preventing static electricity from breaking through the first circuit board 230.

[0142] The conductive foam 250 can deform to a certain extent along the first direction X. The deformed conductive foam 250 can allow the first circuit board 230 to slightly displace in the first direction X. In other words, the first circuit board 230 can be displaced within a second preset range in the first direction X. The size of the second preset range is positively correlated with the deformability of the conductive foam 250. The size of the second preset range can be controlled by the compression ratio of the conductive foam 250. The compression ratio of the conductive foam 250 can be set between 40% and 60%. For example, the compression ratio of the conductive foam 250 can be set to 50%. This ensures the first circuit board 230's freedom of displacement in the first direction X while preventing excessive deformation of the conductive foam 250, which could lead to failure of bonding or grounding.

[0143] Thus, through the embodiments of the present disclosure, the first circuit board 230 has a certain degree of freedom of displacement in both the first direction X and the second direction Y. Thus, whether in "landscape display" mode or "portrait display" mode, when the display panel 210 sinks, the first circuit board 230 can also move accordingly under the action of gravity (or the tension of the chip-on-film (COF), thereby alleviating the tension on the chip-on-film (COF). At the same time, the flexible hook assembly 240 and the conductive foam 250 cooperate to allow the first circuit board 230 to move to a greater extent in the first direction X (compared to the displacement in the second direction Y). In the "vertical display" mode, when the display panel 210 sinks, the first circuit board 230 sinks synchronously under the action of gravity (or also including the tension of the chip-on-film COF), thereby reducing or even eliminating the pulling of the chip-on-film COF, and further improving the black state light leakage problem caused by this, which is conducive to expanding the application scenario of the display module 200 (large-size bar display module 200) to the "vertical display" mode, and can achieve better display effects.

[0144] The display module 200 in the embodiment of the present disclosure will be further described below with reference to FIG. 5 to FIG. 30 .

[0145] It should be noted that, for clarity, unless otherwise specified, the following description takes an 86-inch bar display module 200 as an example (with a long side length of 2.2 m and a short side length of 0.36 m) to illustrate the size design of each component in the embodiment of the present disclosure.

[0146] Referring to Figures 11 and 12 , in some specific embodiments, the portion of the first circuit board 230 clamped by the first flexible hook 242 and the second flexible hook 243 includes a first fixing portion 231. In the thickness direction of the display module 200, the first flexible hook 242 overlaps with the first fixing portion 231, and the overlapping region (hereinafter referred to as the first overlapping region) has a first dimension d31 in the second direction Y. In the thickness direction Z of the display module 200, the second flexible hook 243 overlaps with the first fixing portion 231, and the overlapping region (hereinafter referred to as the second overlapping region) has a second dimension d32 in the second direction Y. The first fixing portion 231 has a third dimension d33 in the second direction Y.

[0147] The first circuit board 230 is a strip-shaped structure extending along a first direction X. The first circuit board 230 includes two short sides arranged opposite each other along the first direction X and two long sides arranged along a second direction Y. The first flexible hook 242 and the second flexible hook 243 clamp onto the two long sides of the first circuit board 230. The portion of the first circuit board 230 clamped by the first flexible hook 242 and the second flexible hook 243 may refer to the portion of the first circuit board 230 between the first flexible hook 242 and the second flexible hook 243, that is, the first fixing portion 231.

[0148] Referring to Figure 11 , the left end of the first flexible hook 242 extends downward and presses against the left surface of the upper end of the first fixing portion 231, thereby forming a first overlapping region. The left end of the second flexible hook 243 extends upward and presses against the left surface of the lower end of the first fixing portion 231, thereby forming a second overlapping region. The first dimension d31 may refer to the average length of the first overlapping region in the vertical direction in Figure 11 , the second dimension d32 may refer to the average length of the second overlapping region in the vertical direction in Figure 11 , and the third dimension d33 may refer to the average length of the first fixing portion 231 in the vertical direction in Figure 11 .

[0149] Because the first and second flexible hooks 242 and 243 are softer than conventional rigid hooks, embodiments of the present disclosure allow the first and second flexible hooks 242 and 243 to press more tightly against the first circuit board 230. For example, the ratio of the sum of the first and second dimensions d31 and d32 to the third dimension d33 is greater than or equal to 1 / 3 and less than or equal to 1 / 2. In other words, the sum of the first and second dimensions d31 and d32 is greater than 1 / 3 and less than 1 / 2 of the third dimension d33. The first and second dimensions d31 and d32 can be the same. For example, the first dimension d31 can be set to 3.5 mm to 4.5 mm, or 3.85 mm. The second dimension d32 can be set to 3.5 mm to 4.5 mm, or 3.85 mm. The third dimension d33 can be set to 15 mm to 25 mm, or 20 mm, for example. In this way, the first circuit board 230 can be prevented from jumping off the first flexible hook 242 and the second flexible hook 243 , while ensuring the convenience of assembly.

[0150] In some specific embodiments, the first flexible hook 242 includes a first pressing portion 2421 and a first connecting portion 2422, the first pressing portion 2421 is connected to the base 241 through the first connecting portion 2422, the second flexible hook 243 includes a second pressing portion 2423 and a second connecting portion 2424, the second pressing portion 2423 is connected to the base 241 through the second connecting portion 2424, and in the thickness direction Z of the display module 200, the first pressing portion 2421 and the second pressing portion 2423 overlap with the first fixed portion 231.

[0151] 11 and 12 , the first pressing portion 2421 may refer to the portion extending downward from the left end of the first flexible hook 242, and the second pressing portion 2423 may refer to the portion extending upward from the left end of the second flexible hook 243. Accordingly, the first connecting portion 2422 may refer to the portion connecting between the first pressing portion 2421 and the base, and the second connecting portion 2424 may refer to the portion connecting between the second pressing portion 2423 and the base.

[0152] In the second direction Y, a first gap h11 is defined between the first fixing portion 231 and the first connecting portion 2422, and a second gap h12 is defined between the first fixing portion 231 and the second connecting portion 2424. In the thickness direction Z of the display module 200, a third gap h13 is defined between the first pressing portion 2421 or the second pressing portion 2423 and the first fixing portion 231. Either the first gap h11 or the second gap h12 is smaller than the third gap h13.

[0153] The first gap h11 and the second gap h12 can enable the first circuit board 230 to have greater displacement freedom in the second direction Y. At the same time, since the first gap h11 and the second gap h12 are both smaller than the third gap h13, the first gap h11 and the second gap h12 will not be too large, thereby preventing the first circuit board 230 from being displaced.

[0154] For example, the first gap h11 can be set to 0.1 mm to 0.2 mm, for example, 0.15 mm. The second gap h12 can be set to 0.1 mm to 0.2 mm, for example, 0.15 mm. The third gap h13 can be set to 0.15 mm to 0.25 mm, for example, 0.2 mm. This allows the first circuit board 230 to have greater freedom of displacement in the second direction Y while preventing fixation failure caused by excessive gaps.

[0155] In some specific embodiments, the display module 200 further includes a front frame 260 and an optical film 270. The optical film 270 is located on the side of the back plate 220 closest to the display panel 210. The front frame 260 includes a first frame body 261. The first frame body 261 extends along the thickness direction Z of the display module 200. In the second direction Y, the first frame body 261 is located on the side of the back plate 220 away from the center of the display module. In the second direction Y, a first distance w11 is defined between the flexible hook assembly 240 and the first frame body 261, a second distance w12 is defined between the back plate 220 and the first frame body 261, and a third distance w13 is defined between the optical film 270 and the first frame body 261. The first distance w11 is greater than the second distance w12 and less than the third distance w13.

[0156] The first frame 261 extends horizontally in FIG11 and may be a ring-shaped structure surrounding the outer periphery of the back plate 220. The front frame 260 may further include a third frame 262, which is integrally formed with the first frame 261. The third frame 262 may extend horizontally toward the center of the display module 200 and overlap the display panel 210 in the thickness direction Z of the display module 200.

[0157] Referring to Figure 11, the first spacing w11 may refer to the average spacing between the upper side of the flexible hook assembly 240 and the lower side of the first frame 261, the second spacing w12 may refer to the average spacing between the upper side of the back panel 220 and the lower side of the first frame 261, and the third spacing w13 may refer to the average spacing between the upper side of the optical film material 270 and the lower side of the first frame 261.

[0158] For example, the first interval w11 may be set to 2.5 mm to 3.5 mm. For example, the first interval w11 may be set to 2.9 mm.

[0159] In some specific embodiments, the thickness h21 of the base 241 can be set to 1.5 mm. This thickness h21 includes the thickness h31 of the adhesive attached between the base 241 and the backplate 220. In the second direction Y, the spacing w14 between the first circuit board 230 and the first frame 261 can be set to 4 mm to 5 mm. For example, the spacing w14 between the first circuit board 230 and the first frame 261 can be set to 4.4 mm. Optionally, the compression ratio of the flexible hook assembly 240 can be set to 50%, thereby effectively securing the first circuit board 230 while ensuring a small degree of freedom for displacement of the first circuit board 230 in the second direction Y. The thickness of the base 241 can be adjusted based on the required frame width. When the module requires a narrow frame, the thickness of the base 241 can be appropriately increased. When the module requires a narrow frame width, the base 241 can be thinned, but the minimum thickness is greater than or equal to 0.8 mm to avoid the risk of locking failure.

[0160] Optionally, the thickness h41 of the first connection portion 2422 and the second connection portion 2424 may be the same as the thickness h21 of the base 241 , thereby ensuring that the COF has sufficient bending space under low temperature conditions (eg, -20° C.).

[0161] 10 , in some specific embodiments, the first circuit board 230 is electrically connected to the display binding terminal PAD via a plurality of chip-on-film (COFs), and the plurality of chip-on-film (COFs) are arranged along a first direction X. The display module 200 includes a plurality of flexible hook components 240 , and the plurality of flexible hook components 240 are arranged along the first direction X, with at least one flexible hook component 240 disposed between at least two adjacent chip-on-film (COFs).

[0162] The display module 200 includes a plurality of first circuit boards 230 arranged along a first direction X. Each first circuit board 230 is electrically connected to a display bonding pad via a plurality of chip-on-film (COF) terminals. For example, the plurality of COF terminals are arranged horizontally in FIG10 . On a single first circuit board 230 , at least one flexible hook assembly 240 is disposed between each two adjacent COF terminals, thereby ensuring a relatively uniform distribution of the flexible hook assemblies 240 along the first direction X.

[0163] For example, the spacing between two adjacent flexible hook assemblies 240 can be set to 250 mm to 350 mm, for example, the spacing between two adjacent flexible hook assemblies 240 is 295 mm. The dimension of the flexible hook assemblies 240 in the first direction X can be set to 8 mm to 12 mm, for example, the dimension of the flexible hook assemblies 240 in the first direction X can be set to 10 mm. In this way, the flexible hook assemblies 240 can maintain appropriate spacing and be evenly distributed on the backplane 220 while ensuring effective fixation. At the same time, the dimension design of the flexible hook assemblies 240 in the first direction X can, on the one hand, ensure that the flexible hook assemblies 240 have sufficient size to cover the first circuit board 230, and on the other hand, minimize the space occupied by the flexible hook assemblies 240 in the first direction X.

[0164] With reference to Figures 10 and 12 , in some specific embodiments, the back panel 220 includes a back panel body ZT and a first bent portion 221 and a second bent portion 222 disposed on the back panel body ZT. The first bent portion 221 and the second bent portion 222 are bent toward the display panel 210 and are disposed opposite each other in the second direction Y. In the second direction Y, the first circuit board 230 is located between the first bent portion 221 and the second bent portion 222, and the spacing between the first bent portion 221 and the first circuit board 230 is smaller than the spacing between the second bent portion 222 and the first circuit board 230. In the thickness direction Z of the display module 200, the first flexible hook 242 overlaps with the first bent portion 221.

[0165] 10 , the first bend portion 221 and the second bend portion 222 may refer to the bend portions located on the two long sides of the back plate 220. The first bend portion 221 may refer to the bend portion on the upper side, and the second bend portion 222 may refer to the bend portion on the lower side. Compared to the second bend portion 222, the first bend portion 221 is closer to the first circuit board 230.

[0166] 12 , the first bending portion 221 is bent toward the right, and the upper side of the first flexible hook 242 is located between the lower side of the first bending portion 221 and the upper side of the first bending portion 221 , so that the first bending portion 221 is set as close to the top as possible, but not too close to the top, so that the first flexible hook 242 is suspended in the air, affecting the fixing effect.

[0167] 13 , in some specific embodiments, the second side S2 of the first circuit board 230 includes a first corner and a second corner arranged opposite to each other along the first direction X, at least one of the first corner and the second corner includes a metal exposed area, and the conductive foam 250 at least partially covers the metal exposed area.

[0168] Referring to Figure 13 , the first corner and the second corner may refer to the lower left and lower right corners of the first circuit board 230, one of which has an exposed metal area. For example, the display module 200 includes multiple first circuit boards 230, the multiple first circuit boards 230 are arranged along a first direction X, and two adjacent first circuit boards 230 are electrically connected to the display driver chip IC via the same second circuit board B1. For any first circuit board 230, the first corner may refer to the one of the first corner and the second corner that is closer to the second circuit board B1, and the second corner may refer to the one of the first corner and the second corner that is farther away from the second circuit board B1, wherein the second corner has an exposed metal area.

[0169] In the embodiment of the present disclosure, the conductive foam 250 is conductive, with one end electrically connected to the exposed metal area and the other end electrically connected to the grounding structure on the back plate 220, thereby grounding the exposed metal area and preventing static electricity from breaking through the first circuit board 230. In other words, in the embodiment of the present disclosure, the conductive foam 250 not only allows the first circuit board 230 to have a certain degree of freedom of displacement in the first direction X, but also meets the grounding requirements of the first circuit board 230.

[0170] In some specific embodiments, the conductive foam 250 has a dimension of 4 mm to 6 mm in the first direction X, a dimension of 4 mm to 6 mm in the second direction Y, and a thickness of 1 mm to 3 mm. This ensures effective fixation of the first circuit board 230 while allowing the first circuit board 230 a certain degree of freedom of displacement in the first direction X. Furthermore, the conductive foam 250 can effectively cover exposed metal areas, meeting grounding requirements.

[0171] For example, the conductive foam 250 may be square, but this does not constitute a limitation of the present disclosure. The conductive foam 250 may be of any suitable shape. For example, the conductive foam 250 may have a side length bc of 5 mm and a thickness of 2 mm. The conductive foam 250 may be slightly smaller than the exposed metal area, for example, less than 1 to 2 mm.

[0172] FIG14 schematically shows a plan view of an optical film according to an embodiment of the present disclosure, and FIG15 schematically shows a cross-sectional view along the section line CC′ in FIG5 .

[0173] With reference to Figures 14 and 15 , in some specific embodiments, the display module 200 further includes an optical film 270 and a plastic frame 280. The optical film 270 is disposed between the backplate 220 and the display panel 210. The optical film 270 includes a third side S3 and a fourth side S4 that are oppositely disposed along a first direction X. The third side S3 is provided with a mounting hole V. The plastic frame 280 includes a second frame body 281 that extends along the thickness direction Z of the display module 200. The second frame body 281 is located on a side of the third side S3 of the optical film 270 that is away from the center of the optical film 270. The plastic frame 280 further includes a mounting hole 282 disposed on the second frame body 281. The mounting hole 282 extends toward the optical film 270. In the thickness direction Z of the display module 200, the mounting hole 282 overlaps with the mounting hole V, and the mounting hole 282 passes through the mounting hole V in the overlapping region.

[0174] The optical film 270 may include a composite prism 271 and a diffuser 272. The third side S3 and the fourth side S4 of the optical film 270 may refer to two oppositely disposed short sides of the optical film 270. When the display module 200 is in vertical display mode, the fourth side S4 of the optical film 270 is closer to the ground, and the third side S3 is farther from the ground.

[0175] For example, the second frame 281 extends in the vertical direction as shown in Figure 15 , and the ear mounting structure 282 extends in the horizontal direction as shown in Figure 15 . The portion of the ear mounting structure 282 located above the ear mounting hole V is provided with a downwardly extending ear mounting rib, which passes through the ear mounting hole V to limit the ear mounting hole V. Compared to conventional solutions in which the ear mounting rib is provided on the back panel 220 , providing the ear mounting rib on the plastic frame 280 eliminates the need for corresponding structures on the back panel 220 , thereby facilitating a narrow frame.

[0176] In an embodiment of the present disclosure, a hanging ear hole V is provided on the third side S3 of the optical film material 270, and a hanging ear structure 282 is correspondingly provided on the second frame 281. In this way, when the display module 200 is in the "vertical display" mode, the optical film material 270 is limited by the cooperation of the hanging ear hole V and the hanging ear structure 282 to prevent the optical film material 270 from sinking.

[0177] In the embodiments of the present disclosure, the display module 200 can be used in a wide temperature environment, where the upper and lower temperature limits of the wide temperature environment exceed the conventional temperature range, and even exceed the critical deformation temperature of at least part of the film material of the display module 200. For example, the conventional temperature range is -5°C to 60°C, and the temperature range of the wide temperature environment can reach -20°C to 80°C. In a wide temperature environment, the plastic frame 280 may deform. In the vertical display mode, the deformed plastic frame 280 is difficult to form an effective support for the optical film material 270. For example, when the temperature reaches 80°C, the ear structure 282 on the plastic frame 280 will sink. At this time, the ear hole V will sink synchronously, resulting in deviation from the predetermined position, which will cause obvious light leakage problems.

[0178] FIG16A schematically shows a schematic diagram of the auxiliary fixing tape in an embodiment of the present disclosure.

[0179] In conjunction with Figures 10 and 16A , in some specific embodiments, a hook protrusion TC is further fixedly disposed on the third side S3 of the optical film 270. The hook protrusion TC is located on the side of the hook hole away from the center of the optical film. The display module 200 also includes an auxiliary fixing tape TA. The back panel 220 includes a back panel body ZT and a third bent portion 223 and a fourth bent portion 224 disposed thereon. The third bent portion 223 and the fourth bent portion 224 are bent toward the display panel 210 and are disposed opposite each other in the first direction X. The third bent portion 223 is aligned with the fourth side S4S4 of the optical film 270 on a side facing away from the center of the display module 200. The auxiliary fixing tape TA includes a wrapping portion TA1 and a first bonding portion TA2. The wrapping portion TA1 passes through the hook hole V and wraps around the hook protrusion TC. The first bonding portion TA2 bonds to the fourth bent portion 224.

[0180] In an embodiment of the present disclosure, the third bending portion 223 and the fourth bending portion 224 may refer to bending portions located on two relatively short sides of the back panel 220. For example, the third bending portion 223 is located at the left end of the back panel 220 in Figure 10, and the fourth bending portion 224 is located at the right end of the back panel 220 in Figure 10.

[0181] In the embodiment of the present disclosure, “the side of the third bending portion 223 away from the center of the display module 200 is flush with the fourth side S4S4 of the optical film 270 ” and similar expressions may mean that the surfaces of the sides away from the center of the display module 200 are approximately located in the same horizontal plane.

[0182] The wrapping portion TA1 may include a strip shape. For example, the wrapping portion TA1 is wrapped around the ear hook protrusion TC located to the right of the ear hook hole V in FIG16A . The first bonding portion TA2 is bonded to the fourth bent portion 224 . The back panel 220 may include a metal material, which is much less affected by temperature than the plastic frame 280 . Even at 80°C, the shape of the fourth bent portion 224 can remain stable. At this time, even if the plastic frame 280 deforms and causes the ear hook structure 282 to sink, the auxiliary fixing tape TA can tightly fasten the ear hook hole V, thereby fixing the optical film 270 in the predetermined position and preventing the ear hook hole V from deviating and causing light leakage.

[0183] FIG16B schematically shows a schematic diagram of the first groove in an embodiment of the present disclosure, wherein, for clarity, FIG16B only shows a portion of the fourth bending portion 224 that is closer to the first groove V1.

[0184] With reference to Figures 16A and 16B , in some embodiments, a first groove AC1 is provided on the side of the fourth bent portion 224 proximal to the display panel. The first groove AC1 is recessed toward the back panel body ZT, and the ear hook protrusion TC overlaps within the first groove AC1. For example, the first groove AC1 is recessed downward in Figure 16B , thereby leaving space for the ear hook protrusion TC, limiting its displacement and thereby ensuring the stability of the optical film 270.

[0185] In some embodiments, the second frame 281 is located on a side of the fourth bending portion 224 away from the center of the display module. The first bonding portion TA2 is bonded to the surface of the fourth bending portion 224 facing the second frame 281, with a gap between the first bonding portion TA2 and the second frame 281.

[0186] The first bonding portion TA2 can be bonded to the surface of the fourth bending portion 224 facing the second frame 281. This side surface is adjacent to the ear hole V and has a large area, so that the bonding area between the first bonding portion TA2 and the fourth bending portion 224 is as large as possible, which is beneficial to the stability of the bonding between the auxiliary fixing tape TA and the back panel 220.

[0187] For example, the gap between the first adhesive portion TA2 and the second frame 281 is set to 0.15mm to 0.25mm, for example, the gap between the first adhesive portion TA2 and the second frame 281 is set to 0.2mm. For example, the overall thickness of the auxiliary fixing tape TA is set to 0.05mm to 0.18mm, for example, the overall thickness of the auxiliary fixing tape TA is set to 0.1mm to 0.15mm. Optionally, the viscosity (tape peeling force) of the auxiliary fixing tape TA is greater than or equal to 1500kgf / 25mm. In this way, the stability of the auxiliary fixing tape TA can be ensured, and at the same time, the auxiliary fixing tape TA can be prevented from squeezing the second frame 281 and the fourth bending portion 224.

[0188] In some specific embodiments, the auxiliary fixing tape TA further includes an intermediate portion TA3 located between the wrapping portion TA1 and the first bonding portion TA2. The end of the wrapping portion TA1 adheres to the intermediate portion TA3 after passing around the edge of the ear hook hole V. The fourth bent portion 224 includes a second groove AC2, which is recessed toward the side away from the second frame 281. The end of the wrapping portion TA1 is at least partially located within the second groove AC2. For example, referring to FIG. 16A , the bonding portion between the end of the wrapping portion TA1 and the intermediate portion TA3 is located within the second groove AC2. This second groove AC2 provides more space for bonding between the two. The end of the wrapping portion TA1 and the intermediate portion TA3 overlap in the first direction X. In this overlapping region, the side of the wrapping portion TA1 facing the intermediate portion adheres to the side of the intermediate portion TA3 facing the end of the wrapping portion TA1. The portion of the end of the wrapping portion TA1 and the intermediate portion TA3 located within this overlapping region constitutes the bonding portion between the two.

[0189] FIG17 schematically shows a schematic diagram of the auxiliary fixing tape after being unfolded in an embodiment of the present disclosure.

[0190] Referring to Figure 17, in some specific embodiments, the dimension d41 of the first bonding portion TA2 in the second direction Y is greater than the dimension d42 of the middle portion TA3 in the second direction Y, and a transition corner R is provided at the junction of the first bonding portion TA2 and the middle portion TA3, and the transition corner R includes an arc-shaped corner.

[0191] For example, the auxiliary fixing tape TA can be T-shaped after being unfolded, with the dimension d42 of the middle portion TA3 in the second direction Y being greater than or equal to 8 mm. The length of the wrapped portion TA1 must be sufficient to effectively bond to the middle portion TA3 after wrapping around the film lug, and the bonding width must be greater than or equal to 1 mm to ensure that the auxiliary fixing tape TA effectively secures the optical film 270. The radius of the curved corner is greater than or equal to 0.5 mm to prevent strength failure caused by tearing at the corner. Optionally, the dimension d41 of the first bonding portion TA2 in the second direction Y is greater than or equal to 25 mm, and the dimension d43 of the first bonding portion TA2 in the display module thickness direction Z is greater than or equal to 6 mm.

[0192] In some specific embodiments, the first bonding portion TA2 is bonded to two adjacent side surfaces of the fourth bent portion 224. For example, the first bonding portion TA2 is bonded to the surface of the fourth bent portion 224 facing the second frame 281 and the surface facing away from the display panel 210. This can increase the bonding area and disperse the force, thereby improving bonding stability.

[0193] 18 and 19 schematically illustrate a first light-shielding structure in an embodiment of the present disclosure, and FIG. 20 schematically illustrates light leakage caused by the shrinkage of a composite prism and a diffuser.

[0194] 10 and 18 to 20 , in some specific embodiments, the optical film 270 includes a composite prism 271 and a diffuser 272. In a first direction X, the diffuser 272 includes a first surface M1 and a second surface M2 that are disposed opposite each other along the thickness direction of the diffuser 272. The first surface M1 is located on the side of the second surface M2 that is closer to the composite prism 271. A first light-shielding structure 2721 is disposed on the first surface M1. The first surface M1 includes an ear-hanging side and an opposite ear-hanging side that are disposed opposite each other along the first direction X. The ear-hanging hole is located on the ear-hanging side, and the first light-shielding structure 2721 is located on the opposite ear-hanging side.

[0195] Exemplarily, the first surface of the diffuser 272 may refer to the upper surface of the diffuser 272 in Figure 19, the second surface of the diffuser 272 may refer to the lower surface of the diffuser 272 in Figure 19, the ear-hanging side is the side of the diffuser 272 in the aforementioned embodiment on which the ear-hanging hole V is provided, and the opposite ear-hanging side is the side of the diffuser 272 opposite to the ear-hanging side, for example, it may refer to the left side of the diffuser 272 in Figure 19.

[0196] In an embodiment of the present disclosure, the display module can operate at 80°C. At 80°C, both the composite prism 271 and the diffuser 272 shrink, but the composite prism 271 shrinks more than the diffuser 272. Referring to FIG20 , the composite prism 271 shrinks much more than the diffuser 272, resulting in a portion of the diffuser 272 being exposed. This portion causes light G emitted from the light source assembly to pass through the diffuser 272 and be incident on the side of the composite prism 271, thereby causing light leakage. Referring to FIG19 , in an embodiment of the present disclosure, the first light-shielding structure 2721 can provide a light-shielding effect, thereby improving the light leakage problem to a certain extent.

[0197] In some specific embodiments, the dimension of the first light-shielding structure in the first direction is set to 2 mm to 4 mm. For example, the dimension d51 of the first light-shielding structure 2721 in the first direction X is 3 mm. Thus, at 80°C, the first light-shielding structure 2721 can cover the portion of the diffuser 272 exposed by the composite prism 271. Thus, even if the composite prism 271 contracts and a portion of the diffuser 272 is exposed, light will not be incident on the composite prism 271 from the side because the portion is blocked by the first light-shielding structure 2721.

[0198] In some specific embodiments, the first light-shielding structure 2721 can also cover the edge of the complex prism after the composite prism 271 shrinks. For example, the first light-shielding structure 2721 can also cover the edge of the composite prism 271 by a certain size d52 after the composite prism 271 shrinks. For example, d52>1mm, thereby preventing process fluctuations from causing the first light-shielding structure 2721 and the edge of the composite prism 271 to overlap partially.

[0199] In other specific embodiments, the optical film 270 includes a single prism and a diffuser 272, the ear hole V passes through the single prism and the diffuser 272, and the heat shrinkage rate of the single prism is the same as that of the diffuser 272. In this way, the first light shielding structure 2721 can be omitted.

[0200] FIG21 schematically shows a schematic diagram of a light source assembly and supporting foam in an embodiment of the present disclosure, and FIG22 schematically shows a cross-sectional view along the section line DD′ in FIG21 .

[0201] With reference to Figures 21 and 22 , in some specific embodiments, the back plate 220 includes a fifth side S5 and a sixth side S6 disposed opposite each other along the second direction Y, the flexible hook assembly 240 is located on the fifth side S5, and the display module 200 further includes: a light source assembly LD and a supporting foam ZC. The light source assembly LD is disposed on the sixth side S6 of the back plate 220, the light source assembly LD extends along the first direction X, the light emission direction of the light source assembly LD intersects with the thickness direction Z of the display module 200, and the light source assembly LD includes a first end D1 and a second end (not shown) disposed opposite each other along the first direction X. The supporting foam ZC extends along the first direction X and includes a third end D2 and a fourth end disposed opposite each other along the first direction X, the first end D1 being flush with the third end D3, and the second end being flush with the fourth end.

[0202] The fifth side S5 and the sixth side S6 of the back panel 220 may refer to two oppositely disposed long sides of the back panel 220. The fifth side S5 may be the upper side of the back panel 220 in FIG. 21 , and the sixth side S6 may be the lower side of the back panel 220 in FIG. 21 . The flexible hook assembly 240 and the light source assembly LD are disposed on the upper and lower sides, respectively. However, this does not constitute an illustration of the present embodiment; the light source assembly LD may be disposed at any suitable location on the back panel 220.

[0203] In an embodiment of the present disclosure, the supporting foam ZC and the light source assembly LD can be arranged in parallel. The initial attachment position of the supporting foam ZC is as close to the short side of the display module 200 as possible. For example, the left end (third end) of the supporting foam ZC in Figure 21 is flush with the left end (first end) of the light source assembly LD. It should be understood that Figure 21 only shows a part of the display module 200. In another part of the display module 200, the right end (fourth end) of the supporting foam ZC is also flush with the right end (second end) of the light source assembly LD, and its structure can be used as a reference. The left end of the supporting foam ZC and the left end of the light source assembly LD are not described here.

[0204] After the reflector 310 is formed, the supporting foam ZC can form support at the corners of the reflector 310 close to the light source assembly LD, so that the corners of the reflector 310 can be effectively supported by the supporting foam ZC, thereby preventing the corners of the reflector 310 from collapsing.

[0205] Optionally, the distance between the supporting foam ZC and the adjacent structure may be set to 0.3 mm to 0.6 mm.

[0206] FIG23 schematically shows a schematic diagram of the reflective sheet being exposed after the light guide plate is retracted in an embodiment of the present disclosure.

[0207] With reference to Figures 7 and 21 to 23, in some specific embodiments, the display module 200 further includes a light guide plate 320 and a reflective sheet 310. The reflective sheet 310 includes a third surface M3 and a fourth surface M4 disposed opposite each other along the thickness direction of the reflective sheet 310. The third surface M3 is located on a side of the fourth surface M4 that is closer to the light guide plate 320. A second light-shielding structure 311 is disposed on the third surface M3. The third surface M3 includes a seventh side S7 and an eighth side S8 that are opposite each other in the second direction Y. The eighth side S8 is located on a side of the seventh side S7 that is closer to the light source assembly LD. The second light-shielding structure 311 is located on the eighth side S8.

[0208] 7 , the third surface M3 of the reflector 310 may refer to the upper surface of the reflector 310, and the fourth surface M4 may refer to the lower surface of the reflector 310. The seventh side S7 and the eighth side S8 may refer to two opposite long sides of the reflector 310. For example, the seventh side S7 may refer to the upper side of the reflector 310 in FIG. 23 , and the eighth side S8 of the reflector 310 may refer to the lower side of the reflector 310 in FIG. 23 .

[0209] At -20°C, the light guide plate 320 and the reflective sheet 310 shrink, with the light guide plate 320 shrinking more than the reflective sheet 310. This can expose the reflective sheet 310, causing light from the light source assembly LD to directly strike the reflective sheet 310, resulting in poor display (e.g., light leakage). In the embodiment of the present disclosure, the second light shielding structure 311 can provide light shielding after the light guide plate 320 shrinks, thereby preventing some light from the light source assembly LD from directly striking the reflective sheet 310.

[0210] In some specific embodiments, the size of the second light-shielding structure 311 in the first direction X is set to 1 mm to 3 mm, for example, the size of the second light-shielding structure 311 in the first direction X is set to 2 mm. The size of the second light-shielding structure 311 in the second direction is set to 2 mm to 4 mm, for example, the size of the second light-shielding structure 311 in the first direction X is set to 3 mm. In this way, the second light-shielding structure 311 is located on the two corners of the reflective sheet 310 close to the light source assembly LD. In this way, at -20°C, the second light-shielding structure 311 can cover the area of ​​the reflective sheet 310 that is most severely illuminated by the light source assembly LD, while at normal temperature (for example, above 0°C), the second light-shielding structure 311 only covers the two corners of the reflective sheet 310, thereby reducing the impact of the second light-shielding structure 311 on the reflection area.

[0211] Optionally, the second light shielding structure 311 may include black ink coating or black tape.

[0212] In some specific embodiments, the display module further includes a third light-shielding structure ZG, which is integrally connected to the second light-shielding structure 311. The back plate 220 includes a fifth surface M5 and a sixth surface M6 that are disposed opposite each other along the thickness direction of the back plate 220. The fifth surface M5 is located on a side of the sixth surface M6 that is closer to the display panel 210, and the third light-shielding structure ZG is located on the sixth surface M6.

[0213] 7 , the fifth surface M5 of the back panel 220 may refer to the upper surface of the back panel 220, and the sixth surface M6 may refer to the lower surface of the back panel 220. At -20°C, the contraction of the light guide plate 320 may also cause the light emitted by the light source assembly LD to directly illuminate the back panel 220 and cause poor display (for example, light leakage caused by reflection from the back panel 220). In an embodiment of the present disclosure, the third light shading structure ZG can improve the stability of the second light shading structure 311 and prevent the second light shading structure 311 from falling off. At the same time, the third light shading structure ZG can also play a light shading role after the light guide plate 320 contracts, thereby preventing part of the light from the light source assembly LD from directly irradiating the back panel 220.

[0214] In some specific embodiments, the dimension of the third light shielding structure ZG in the first direction X is set to 3 mm-5 mm. For example, the dimension of the third light shielding structure ZG in the first direction X is set to 4 mm. In this way, at -20°C, the third light shielding structure ZG can cover the area of ​​the back plate 220 that is most severely illuminated by the light source assembly LD, thereby effectively improving the reflection problem.

[0215] Figure 24 schematically shows a cross-sectional view along line EE' in Figure 5, Figure 25 schematically shows a cross-sectional view along line FF' in Figure 5, Figure 26 schematically shows a schematic diagram of the retaining wall structure in an embodiment of the present disclosure, and Figure 27 schematically shows a schematic diagram of the retaining wall shading in an embodiment of the present disclosure.

[0216] In conjunction with Figures 7 and 24 to 27, in some specific embodiments, the display module 200 includes a light source assembly LD and a plastic frame 280, the light source assembly LD includes a plurality of light-emitting devices D, the plastic frame 280 includes a plurality of sub-frames, the plurality of sub-frames include a first sub-frame K1 and a second sub-frame K2 arranged relative to each other along a first direction X, and a plurality of third sub-frames K3 located between the first sub-frame K1 and the second sub-frame K2. The third sub-frame K3 includes a first splicing portion K31 and a second splicing portion K32 arranged opposite to each other along the first direction. The first splicing portion K31 of one of the two adjacent third sub-frames K3 in the first direction X is spliced ​​with the second splicing portion K32 of the other; the first splicing portion K31 includes a first side wall CB1, and the second splicing portion includes a second side wall CB2. The first side wall CB1 and the second side wall CB2 are both located on a side of the light source assembly LD close to the center of the display module. A first retaining wall DQ1 is provided on a side of the first side wall CB1 away from the center of the display module, and a second retaining wall DQ2 is provided on a side of the second side wall CB2 away from the center of the display module; the first retaining wall DQ1 and the second retaining wall DQ2 overlap in the thickness direction of the display module, and the overlapping area overlaps with at least one light-emitting device D in the thickness direction Z of the display module.

[0217] Multiple light-emitting devices D on the light source assembly LD are arranged along a first direction X. The first subframe K1 and the second subframe K2 can be U-shaped, with multiple third subframes K3 connected between the first subframe K1 and the second subframe K2, thereby forming a ring-shaped plastic frame 280. In other words, the plastic frame 280 is composed of multiple subframes. In the first direction X, the first subframe K1 and the second subframe K2 are relatively small, while the third subframe K3 is relatively large. Under wide temperature environments, the third subframe K3 is prone to shrinkage. When the third subframe K3 shrinks, a large gap is likely to form between adjacent third subframes K3. Referring to Figure 27, ideally, all light emitted by the light-emitting device D enters the light guide plate 320. However, the light-emitting device D has a large light-emitting surface, and some of the light emitted is emitted upward. When a large gap is formed between adjacent third subframes K3, the light emitted upward by the light-emitting device D will pass through the gap, thus causing a light phenomenon.

[0218] Referring to Figure 25 , the third subframe K3 includes a first splicing portion K31 at the right end and a second splicing portion K32 at the left end. Figure 25 only shows the right end of the third subframe K3 on the left and the left end of the third subframe K3 on the right. The left third subframe K3 is spliced ​​with the second splicing portion K31 on the left end of the third subframe K3 on the right via the first splicing portion K31 on the right.

[0219] 26 , a first blocking wall DQ1 is provided on the first splicing portion K31, and a second blocking wall DQ2 is provided on the second splicing portion K32. The first blocking wall DQ1 and the second blocking wall DQ2 overlap in the thickness direction Z of the display module 200, so that the first blocking wall DQ1 and the second blocking wall DQ2 are staggered. In this way, even if the third sub-frame K3 shrinks, the staggered first blocking wall DQ1 and the second blocking wall DQ2 can block the light emitted upward from the light-emitting device D, thereby preventing light leakage.

[0220] In some specific embodiments, the overlapping area of ​​the first retaining wall DQ1 and the second retaining wall DQ2 has a first design dimension JD in the first direction X, and the first design dimension JD is greater than or equal to 1 mm to 2.5 mm. Thus, the first design dimension is greater than or equal to the sum of the maximum shrinkage of two adjacent third sub-frames K3 at -20°C (relative to room temperature). This ensures that the first retaining wall DQ1 and the second retaining wall DQ2 can always block the upwardly emitted light of the light-emitting device D at -20°C, thereby more effectively improving light leakage.

[0221] In some specific embodiments, the precise positioning structure for the third sub-frame K3 and the back panel 220 is located on at least one of the first splicing portion K31 and the second splicing portion K32 of the third sub-frame K3. For example, the precise positioning structure is located on the one of the first splicing portion K31 and the second splicing portion K32 that is away from the center of the display module 200. For example, the plastic frame 280 may include two third sub-frames K3 arranged along the first direction X, wherein the third sub-frame K3 on the left is adjacent to the first sub-frame K1, and the third sub-frame K3 on the right is adjacent to the second sub-frame K2. Accordingly, the precise positioning structure of the third sub-frame K3 on the right is located at the splicing portion between the third sub-frame K3 and the second sub-frame K2, and the precise positioning structure of the third sub-frame K3 on the left is located at the splicing portion between the third sub-frame K3 and the first sub-frame K1. The precise positioning structure may refer to a structure on the third sub-frame K3 that is used for mounting with the back panel 220. Alternatively, all manufacturing tolerances and statistical tolerances can be accumulated at the junction of adjacent sub-frames (e.g., the first sub-frame K1 and the third sub-frame K3, the second sub-frame K2 and the third sub-frame K3, or two adjacent third sub-frames K3), thereby limiting the shrinkage of the third sub-frame K3 to the junction of two adjacent third sub-frames K3. Furthermore, the aforementioned first retaining wall DQ1 and second retaining wall DQ2 can be used to centrally address light leakage caused by shrinkage at the junction.

[0222] In the embodiment of the present disclosure, the gap Gap1 between the fine positioning structure and the back plate 220 can be set to 0.1 mm to minimize the size drift of the joint caused by assembly tolerance. The gap Gap2 between two adjacent third sub-frames K3 can be set to 0.2 mm to minimize the size of the joint.

[0223] FIG28 schematically shows a schematic diagram of the gap between the third sub-frame and the front frame in an embodiment of the present disclosure, and FIG29 schematically shows a schematic diagram of the limiting structure in an embodiment of the present disclosure.

[0224] 28 and 29 , in the embodiment of the present disclosure, since the display module 200 is a strip-shaped display module 200 , the length of its long side is much greater than the length of its short side. In the “vertical display” mode, at the joint of two adjacent third sub-frames K3 , when there is a gap Gap3 (for example, Gap3 = 0.2 mm) between the third sub-frame K3 and the front frame 260 , the upper third sub-frame K3 is likely to shift toward the front frame 260 . For example, the upper third sub-frame K3 is likely to shift toward the right side in FIG. 28 , which may easily cause the third sub-frame K3 to deviate from the predetermined position, thereby causing light leakage.

[0225] In view of this, in some specific embodiments, the display module 200 further includes a front frame 260. In the overlapping region of two adjacent third sub-frames K3, a limiting structure XW is filled in the gap between one of the two adjacent third sub-frames K3 and the front frame 260. The limiting structure XW may include tape or limiting ribs. The limiting structure XW prevents the third sub-frame K3 from shifting toward the front frame 260, thereby confining the third sub-frame K3 to a predetermined position and preventing light leakage.

[0226] Through the above-mentioned approach, the embodiment of the present disclosure solves the light leakage problem of the large-size bar display module 200 in the “horizontal display” mode and the “vertical display” mode under a wide temperature scenario.

[0227] At the same time, the multiple sub-frames in the embodiment of the present disclosure are shielded from light by the staggered retaining walls DQ. Even if the display module 200 reaches a higher brightness (for example, 1000 nit), there will be no light leakage. At the same time, the picture uniformity is good, for example, the picture uniformity can reach 75%.

[0228] Figure 30 schematically shows the second exploded view of the display module in the embodiment of the present disclosure. Referring to Figure 30, in some specific embodiments, the display module may also include a protective cover 330 of the first circuit board 230 and other circuit boards 340, etc. The specific details can be determined according to actual needs and are not limited here.

[0229] An embodiment of the present disclosure further provides a display device, including the display module 200 described above.

[0230] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of this disclosure may be combined and / or coupled in various ways, even if such combinations and / or couplings are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure may be combined and / or coupled in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or couplings are intended to fall within the scope of this disclosure.

[0231] The embodiments of the present disclosure are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although each embodiment has been described separately above, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A display module, wherein: include: A display panel, the display panel comprising a display area and a peripheral area at least partially surrounding the display area, the peripheral area comprising a display binding end; A back plate, the back plate being arranged on the back side of the display panel; A first circuit board, the first circuit board is arranged on a side of the back plate away from the display panel, the first circuit board extends along a first direction, the first circuit board comprises a first side and a second side arranged opposite to each other along a second direction, the first side is electrically connected to the display binding end, the second side is used to be electrically connected to the display driving chip, and the first direction and the second direction intersect; A flexible hook assembly, the flexible hook assembly is arranged on a side of the back plate away from the display panel, the flexible hook assembly comprises: a base, a first flexible hook and a second flexible hook, the base is fixedly connected to the back plate, the first flexible hook and the second flexible hook are arranged on a side of the base away from the display panel, the first flexible hook and the second flexible hook are arranged opposite to each other along the second direction, the first flexible hook and the second flexible hook clamp the first circuit board, and allow the first circuit board to move within a first preset range in the second direction; Conductive foam, wherein the conductive foam is arranged on a side of the back plate away from the display panel, at least one corner of the first circuit board is bonded to the back plate through the conductive foam, and the conductive foam allows the first circuit board to be displaced within a second preset range in the first direction.

2. The display module according to claim 1, wherein: The portion of the first circuit board clamped by the first flexible hook and the second flexible hook includes a first fixing portion; In the thickness direction of the display module, the first flexible hook overlaps with the first fixing portion, and the overlapping area has a first size in the second direction; In the thickness direction of the display module, the second flexible hook overlaps with the first fixing portion, and the overlapping area has a second size in the second direction; The first fixing portion has a third size in the second direction, and a ratio of the sum of the first size and the second size to the third size is greater than or equal to 1 / 3 and less than or equal to 1 / 2.

3. The display module according to claim 2, wherein: The first size is set to 3.5 mm to 4.5 mm, the second size is set to 3.5 mm to 4.5 mm, and the third size is set to 15 mm to 25 mm.

4. The display module according to claim 2, wherein: The first flexible hook includes a first pressing portion and a first connecting portion, the first pressing portion is connected to the base through the first connecting portion, the second flexible hook includes a second pressing portion and a second connecting portion, the second pressing portion is connected to the base through the second connecting portion, and in the thickness direction of the display module, the first pressing portion and the second pressing portion overlap with the first fixing portion; In the second direction, a first gap is provided between the first fixing portion and the first connecting portion, and a second gap is provided between the first fixing portion and the second connecting portion; In the thickness direction of the display module, a third gap is provided between any one of the first pressing portion and the second pressing portion and the first fixing portion; Wherein, any one of the first gap and the second gap is smaller than the third gap.

5. The display module according to claim 4, wherein: The first gap is set to 0.1 mm to 0.2 mm, the second gap is set to 0.1 mm to 0.2 mm, and the third gap is set to 0.15 mm to 0.25 mm.

6. The display module according to claim 1, wherein: The first circuit board is electrically connected to the display binding end through a plurality of chip-on-chip films, and the plurality of chip-on-chip films are arranged along the first direction; The display module includes a plurality of flexible hook components, which are arranged along the first direction, and at least one flexible hook component is arranged between at least two adjacent chip-on-films, wherein in the first direction, the spacing between two adjacent flexible hook components is set to be 250 mm to 350 mm; The dimension of at least one of the flexible hook components in the first direction is set to 8 mm to 12 mm.

7. The display module according to claim 1, wherein: The display module further includes a front frame, the front frame includes a first frame body, the first frame body extends along the thickness direction of the display module, and in the second direction, the first frame body is located on a side of the back plate away from the center of the display module; In the second direction, there is a first distance between the flexible hook assembly and the first frame, a second distance between the back plate and the first frame, and a distance between the display panel and the first frame. having a third spacing; The first interval is larger than the second interval and smaller than the third interval.

8. The display module according to claim 1, wherein: The backplane includes a backplane body and a first bending portion and a second bending portion arranged on the backplane body, the first bending portion and the second bending portion are bent toward the display panel, and the first bending portion and the second bending portion are arranged opposite to each other in the second direction; In the second direction, the first circuit board is located between the first bending portion and the second bending portion, and the distance between the first bending portion and the first circuit board is smaller than the distance between the second bending portion and the first circuit board; In the thickness direction of the display module, the first flexible hook overlaps with the first bending portion.

9. The display module according to claim 1, wherein: The second side of the first circuit board includes a first corner and a second corner arranged opposite to each other along the first direction, at least one of the first corner and the second corner includes a metal exposed area, and the conductive foam at least partially covers the metal exposed area.

10. The display module according to claim 1, wherein: The size of the conductive foam in the first direction is set to 4 mm to 6 mm, the size of the conductive foam in the second direction is set to 4 mm to 6 mm, and the thickness of the conductive foam is set to 1 mm to 3 mm.

11. The display module according to claim 1, wherein: The display module further comprises an optical film material and a plastic frame, wherein the optical film material is arranged between the back plate and the display panel, and the optical film material comprises a third side and a fourth side arranged opposite to each other along the first direction, and an ear-hanging hole is arranged on the third side; The plastic frame includes a second frame body, the second frame body extends along the thickness direction of the display module, and the second frame body is located on a third side of the optical film material away from the center of the optical film material; The plastic frame also includes an ear hanging structure arranged on the second frame body, the ear hanging structure extends toward the optical film material, and in the thickness direction of the display module, the ear hanging structure overlaps with the ear hanging hole, and in the overlapping area, the ear hanging structure passes through the ear hanging hole.

12. The display module according to claim 11, wherein: The third side is also fixedly provided with a hanging ear protrusion, the hanging ear protrusion is located on a side of the hanging ear hole away from the center of the optical film material, and the display module further includes an auxiliary fixing tape; The backplane includes a backplane body and a third bending portion and a fourth bending portion arranged on the backplane body, the third bending portion and the fourth bending portion are bent toward the display panel, and the third bending portion and the fourth bending portion are arranged opposite to each other in the first direction; A side of the third bent portion away from the center of the display module is flush with the fourth side of the optical film material; The auxiliary fixing tape includes a winding portion and a first bonding portion, the winding portion passes through the ear hanging hole and is wound around the protruding portion of the ear hanging hole, and the first bonding portion is bonded to the fourth bending portion.

13. The display module according to claim 12, wherein: A first groove is provided on a side of the fourth bending portion close to the display panel. The first groove is recessed toward the back panel body, and the hook protrusion is overlapped in the first groove.

14. The display module according to claim 12, wherein: The second frame is located on a side of the fourth bending portion away from the center of the display module; The first bonding portion is bonded to a surface of the fourth bending portion facing the second frame body, and a gap is provided between the first bonding portion and the second frame body.

15. The display module according to claim 12, wherein: The auxiliary fixing tape also includes a middle portion located between the wrapping portion and the first bonding portion, and the end of the wrapping portion is bonded to the middle portion after passing around the edge of the ear hanging hole; The fourth bending portion includes a second groove, the second groove is recessed toward a side away from the second frame body, and the end of the winding portion is at least partially located in the second groove.

16. The display module according to claim 15, wherein: The dimension of the first bonding portion in the second direction is greater than the dimension of the middle portion in the second direction. A transition corner is provided at the junction of the first bonding portion and the middle portion, and the transition corner includes an arc-shaped corner.

17. The display module according to claim 12, wherein: The first bonding portion is bonded to two adjacent side surfaces of the fourth bending portion.

18. The display module according to claim 11, wherein: The optical film material includes a composite prism and a diffuser; In the first direction, the diffusion sheet includes a first surface and a second surface which are arranged opposite to each other along the thickness direction of the diffusion sheet, the first surface is located on a side of the second surface close to the composite prism, and a first light shielding structure is arranged on the first surface; The first surface includes a hanging ear side and a hanging ear opposite side which are arranged opposite to each other along the first direction, the hanging ear hole is located on the hanging ear side, and the first light shielding structure is located on the hanging ear opposite side.

19. The display module according to claim 18, wherein: The size of the first light shielding structure in the first direction is set to 2 mm to 4 mm.

20. The display module according to claim 18, wherein: The first light shielding structure includes a black tape or a printed black border.

21. The display module according to claim 11, wherein: The optical film material comprises a single prism and a diffuser, the ear-hanging hole passes through the single prism and the diffuser, and the heat shrinkage rate of the single prism is the same as that of the diffuser.

22. The display module according to claim 1, wherein: The back plate includes a fifth side and a sixth side arranged opposite to each other along the second direction, the flexible hook assembly is located on the fifth side, and the display module further includes: a light source assembly, the light source assembly being arranged on the sixth side of the back plate, the light source assembly extending along the first direction, the light emitting direction of the light source assembly intersecting with the thickness direction of the display module, the light source assembly comprising a first end and a second end arranged opposite to each other along the first direction; The supporting foam extends along the first direction, and comprises a third end and a fourth end which are arranged opposite to each other along the first direction, the first end is flush with the third end, and the second end is flush with the fourth end.

23. The display module according to claim 22, wherein: The display module also includes a light guide plate and a reflective sheet; The reflector sheet comprises a third surface and a fourth surface which are arranged opposite to each other along the thickness direction of the reflector sheet, the third surface is located on a side of the fourth surface close to the light guide plate, and a second light shielding structure is arranged on the third surface; The third surface includes a seventh side and an eighth side that are oppositely arranged in the second direction, the eighth side is located on a side of the seventh side close to the light source assembly, and the second light shielding structure is located on the eighth side.

24. The display module according to claim 23, wherein: The size of the second light shielding structure in the first direction is set to 1 mm to 3 mm, and the size of the second light shielding structure in the second direction is set to 2 mm to 4 mm.

25. The display module according to claim 23, wherein: The display module further includes a third light shielding structure, and the third light shielding structure is connected to the second light shielding structure as a whole; The back plate includes a fifth surface and a sixth surface which are arranged opposite to each other along the thickness direction of the back plate, the fifth surface is located on a side of the sixth surface close to the display panel, and the third light shielding structure is located on the sixth surface.

26. The display module according to claim 25, wherein: The size of the third light-shielding structure in the first direction is set to 3mm-5mm.

27. The display module according to claim 1, wherein: The display module includes a light source assembly and a plastic frame, the light source assembly includes a plurality of light emitting devices, the plastic frame includes a plurality of sub-frames, the plurality of sub-frames include a first sub-frame and a second sub-frame arranged opposite to each other along the first direction, and a plurality of third sub-frames located between the first sub-frame and the second sub-frame; The third sub-frame includes a first splicing portion and a second splicing portion that are arranged opposite to each other along the first direction, and the first splicing portion of one of the two adjacent third sub-frames in the first direction is spliced ​​with the second splicing portion of the other; The first splicing portion includes a first side wall, the second splicing portion includes a second side wall, and the first side wall The first side wall and the second side wall are both located on a side of the light source assembly close to the center of the display module, a first blocking wall is arranged on a side of the first side wall away from the center of the display module, and a second blocking wall is arranged on a side of the second side wall away from the center of the display module; The first retaining wall and the second retaining wall overlap in the thickness direction of the display module, and the overlapping area overlaps with at least one of the light-emitting devices in the thickness direction of the display module.

28. The display module according to claim 27, wherein: An overlapping area between the first retaining wall and the second retaining wall has a first design dimension in the first direction, and the first design dimension is greater than or equal to 1 mm-2.5 mm.

29. The display module according to claim 27, wherein: The display module further includes a front frame, and in an overlapping area of ​​two adjacent third sub-frames, a limiting structure is filled in a gap between one of the two adjacent third sub-frames and the front frame.

30. A display device, wherein: Comprising a display module as described in any one of claims 1 to 29.

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