Display module and display device

Abstract

The invention provides a display module and a display device.The display module comprises a display panel, and the display panel comprises a back plate; the first circuit board is arranged on the side, away from the display panel, of the backboard, the first circuit board extends in the first direction, and the first circuit board comprises a first side and a second side which are oppositely arranged in the second direction; the flexible clamping hook assembly comprises a substrate, a first flexible clamping hook and a second flexible clamping hook, and the first flexible clamping hook and the second flexible clamping hook clamp the first circuit board and allow the first circuit board to move in a first preset range in the second direction; the conductive foam is arranged on the side, away from the display panel, of the back plate, at least one corner of the first circuit board is bonded with the back plate through the conductive foam, and the conductive foam allows the first circuit board to move within a second preset range in the first direction.

Description

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 have gradually entered people's lives and work. Large-size strip screens are narrow strip displays with a long side much longer than a short side. For example, an 86-inch strip screen has a long side length of up to 2.2m and a short side length of only 0.36m.

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

[0004] The present disclosure provides a display module and a display device.

[0005] According to a first aspect of the present disclosure, a display module is provided, comprising:

[0006] 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;

[0007] A back plate, the back plate being arranged on the back side of the display panel;

[0008] 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;

[0009] 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;

[0010] 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.

[0011] 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;

[0012] 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;

[0013] 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;

[0014] 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.

[0015] 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.

[0016] 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 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;

[0017] 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;

[0018] 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;

[0019] Wherein, any one of the first gap and the second gap is smaller than the third gap.

[0020] 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.

[0021] 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;

[0022] 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;

[0023] The dimension of at least one of the flexible hook components in the first direction is set to 8 mm to 12 mm.

[0024] According to an embodiment of the present disclosure, the display module further comprises a front frame, the front frame comprises 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;

[0025] In the second direction, there is a first distance between the flexible hook assembly and the first frame, there is a second distance between the back plate and the first frame, and there is a third distance between the display panel and the first frame;

[0026] The first interval is larger than the second interval and smaller than the third interval.

[0027] According to an embodiment of the present disclosure, 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;

[0028] 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;

[0029] In the thickness direction of the display module, the first flexible hook overlaps with the first bending portion.

[0030] 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.

[0031] 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.

[0032] According to an embodiment of the present disclosure, the display module further includes an optical film material and a plastic frame, the optical film material is arranged between the back plate and the display panel, the optical film material includes 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;

[0033] 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;

[0034] 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.

[0035] According to an embodiment of the present disclosure, a hanging ear protrusion is also 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;

[0036] 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;

[0037] 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;

[0038] 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.

[0039] 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 hook protrusion is overlapped in the first groove.

[0040] 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;

[0041] 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.

[0042] According to an embodiment of the present disclosure, the auxiliary fixing tape further includes a middle portion located between the winding portion and the first bonding portion, and the end of the winding portion is bonded to the middle portion after passing around the edge of the ear hanging hole;

[0043] 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.

[0044] According to an embodiment of the present disclosure, a dimension of the first bonding portion in the second direction is greater than a dimension 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.

[0045] According to an embodiment of the present disclosure, the first bonding portion is bonded to two adjacent side surfaces of the fourth bending portion.

[0046] According to an embodiment of the present disclosure, the optical film material includes a composite prism and a diffuser;

[0047] 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;

[0048] 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.

[0049] 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.

[0050] According to an embodiment of the present disclosure, the first light shielding structure includes a black tape or a printed black border.

[0051] 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.

[0052] 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:

[0053] 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;

[0054] 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.

[0055] According to an embodiment of the present disclosure, the display module further includes a light guide plate and a reflective sheet;

[0056] 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;

[0057] 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.

[0058] 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.

[0059] 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 connected to the second light shielding structure as a whole;

[0060] 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.

[0061] According to an embodiment of the present disclosure, a size of the third light-shielding structure in the first direction is set to 3 mm-5 mm.

[0062] 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;

[0063] 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;

[0064] The first splicing portion includes a first side wall, 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 away from the center of the display module, and a second retaining wall is provided on a side of the second side wall away from the center of the display module;

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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

[0069] 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:

[0070] Figure 1 and Figure 2 A schematic diagram of a display module in a pair of proportions is shown schematically;

[0071] Figure 3 A schematic diagram showing the connection between the first circuit board and the display panel in a pair of ratios is shown schematically;

[0072] Figure 4 Schematically showing a schematic diagram of the connection between the first circuit board and the backplane in a pair of proportions;

[0073] Figure 5 and Figure 6 A schematic diagram of a display module in an embodiment of the present disclosure is schematically shown;

[0074] Figure 7 Schematically shows an exploded view of a display module according to an embodiment of the present disclosure;

[0075] Figure 8 Schematically shows a plan view of a display panel according to an embodiment of the present disclosure;

[0076] Fig. 9 A schematic diagram schematically shows the connection between a first circuit board and a display panel according to an embodiment of the present disclosure;

[0077] Fig.10 A schematic diagram schematically shows the connection between the first circuit board and the backplane according to an embodiment of the present disclosure;

[0078] Fig.11 and Fig.12 Schematically shows Fig.10 A cross-sectional view along the section line BB′;

[0079] Fig.13 Schematically shows Fig.10 Schematic diagram of position A in the middle;

[0080] Fig.14 Schematically shows a plan view of an optical film material in an embodiment of the present disclosure;

[0081] Fig.15 Schematically shows the Figure 5 Sectional view along the center section line CC′;

[0082] Fig.16A A schematic diagram of the auxiliary fixing tape in an embodiment of the present disclosure is schematically shown;

[0083] Fig. 16B A schematic diagram of a first groove in an embodiment of the present disclosure is schematically shown;

[0084] Fig.17 A schematic diagram showing the auxiliary fixing tape after being unfolded in an embodiment of the present disclosure is shown;

[0085] Fig.18 and Fig.19 A schematic diagram of a first light shielding structure in an embodiment of the present disclosure is schematically shown;

[0086] Fig. 20 A schematic diagram showing light leakage due to the shrinkage of the composite prism and the diffuser;

[0087] Fig.21 A schematic diagram of a light source assembly and supporting foam in an embodiment of the present disclosure is schematically shown;

[0088] Fig. 22 Schematically shows the Fig.21 Sectional view along the median section line DD′;

[0089] Fig.23 A schematic diagram schematically shows that the reflective sheet is exposed after the light guide plate is retracted in the embodiment of the present disclosure;

[0090] Fig.24 Schematically shows the Figure 5 Sectional view along the midline EE′;

[0091] Fig.25 Schematically shows the Figure 5 Sectional view along the median section line FF′;

[0092] Fig.26 A schematic diagram of a retaining wall structure in an embodiment of the present disclosure is schematically shown;

[0093] Fig. 27 A schematic diagram of shading by a retaining wall in an embodiment of the present disclosure is schematically shown;

[0094] Fig.28 A schematic diagram schematically shows a gap between the third sub-frame and the front frame in an embodiment of the present disclosure;

[0095] Fig.29 A schematic diagram of a limiting structure in an embodiment of the present disclosure is schematically shown;

[0096] Fig.30 The second exploded view of the display module in the embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0097] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution 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.

[0098] It should be noted that in the drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and / or description. Thus, the size and relative size of each element are not necessarily limited to the size and relative size shown in the drawings. In the specification and drawings, the same or similar reference numerals indicate the same or similar parts.

[0099] 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 "connection" may refer to a physical connection, an electrical connection, a communication connection and / or a fluid connection. In addition, the X-axis, the Y-axis and the 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, the Y-axis and the Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purpose 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 listed associated items.

[0100] 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 parts, these parts, components, elements, regions, layers and / or parts should not be limited by these terms. Instead, these terms are used to distinguish one part, component, element, region, layer and / or part from another. Thus, for example, the first part, first member, first element, first region, first layer and / or first part discussed below may be referred to as the second part, second member, second element, second region, second layer and / or second part without departing from the teachings of the present disclosure.

[0101] For ease of description, spatial relational 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 figure. It should be understood that the spatial relational terms are intended to cover other different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the figure is turned upside down, elements described as "below" or "beneath" other elements or features will be oriented "above" or "above" the other elements or features.

[0102] 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 they 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. Taking into account 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 include the stated value and mean that the particular value is within an acceptable range of deviation 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.

[0103] 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.

[0104] In a pair of ratios, a display module 100 is provided. Figure 1 and Figure 2 A schematic diagram of a display module in a pair of ratios is shown schematically, wherein: Figure 1 FIG. 2 shows a schematic diagram of a horizontal display module. Figure 2 Schematically shows a schematic diagram of a display module when it is placed vertically. Figure 1 and Figure 2 The display module 100 in this comparative example is a large-size bar-type display module 100, and the display module 100 has two short sides arranged oppositely along the first direction X and two long sides arranged oppositely along the second direction Y. The length d11 of the long side of the display module 100 is 2.2 m, and the length d12 of the short side of the display module 100 is 0.36 m.

[0105] Figure 3 A schematic diagram showing the connection between the first circuit board and the display panel in a pair of ratios is shown schematically, Figure 4 A schematic diagram of the connection between the first circuit board and the backplane in a pair of proportions is schematically shown.

[0106] See also Figure 3 and Figure 4The display module 100 in the comparative example includes a display panel 110, a back plate 120 and a first circuit board 130, wherein the back plate 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 plate 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 connecting member such as a cover chip film 160.

[0107] In this comparative example, the display module 100 adopts the "horizontal display" mode, wherein the "horizontal display" mode may mean that when the human eye views the display module 100, the display module 100 is in a state such as Figure 1 Shown in horizontal position. Figure 1 In the "horizontal display" mode, the two long edges of the display module 100 Figure 1 The two short edges extend horizontally. Figure 1 Extends in the vertical direction.

[0108] In order to broaden the application scenarios of the display module 100, it is hoped that the display module 100 can have more display modes, for example, a "vertical display" mode is added to the display module 100, wherein the "vertical display" mode may mean that when the human eye views the display module 100, the display module 100 is in a state such as Figure 2 See the vertical position. Figure 2 In the "vertical display" mode, the two long edges of the display module 100 Figure 2 The two short edges extend in the vertical direction. Figure 2 Extends in the horizontal direction.

[0109] In this comparative example, the first circuit board 130 is connected to the back plate 120 through a rigid fixing member (such as a screw or a rigid buckle, etc.). Due to the large size of the display panel 110, in actual application, the display panel 110 sinks to a certain extent under the influence of gravity. Since the first circuit board 130 is connected to the back plate 120 through a rigid fixing member, the 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.

[0110] Moreover, since the display module 100 is a large-size strip-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 chip-on-film 160 will cause obvious black state light leakage problems in the display module.

[0111] In view of this, an embodiment of the present disclosure provides a display module, which includes: a display panel, a backplane, a first circuit board, a flexible hook assembly and a conductive foam. The display panel includes a display area and a peripheral area that at least partially surrounds the display area. The display area includes a plurality of pixel units, and the plurality of pixel units are arranged in an array along a first direction and a second direction. The first direction and the second direction intersect, and the peripheral area includes a display binding end. The backplane is arranged on the back side of the display panel. The first circuit board is arranged on the side of the backplane away from the display panel, and the first circuit board extends along the first direction. The first circuit board includes a first side and a second side that are arranged oppositely along the second direction. The first side is electrically connected to the display binding end, and the second side is used to be electrically connected to the display driver chip. The flexible hook assembly is arranged on the side of the backplane away from the display panel. The flexible hook assembly includes: a substrate, a first flexible hook and a second flexible hook. The substrate is fixedly connected to the backplane. The first flexible hook and the second flexible hook are arranged on the side of the substrate away from the display panel. The first flexible hook and the second flexible hook are arranged oppositely 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. 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 move in the first direction within a second preset range.

[0112] Through the above-mentioned method, the first circuit board can have a certain degree of displacement freedom in both the first direction and the second direction. In this way, whether in the "horizontal display" mode or the "vertical display" mode, when the display panel sinks, the first circuit board can also move accordingly, thereby alleviating the pulling of the chip-on-film. At the same time, through the cooperation of the flexible hook component and the conductive foam, the first circuit board can be allowed to move to a greater extent in the first direction (compared with the displacement in the second direction), thereby alleviating or even eliminating the problem of severe pulling of the chip-on-film in the "vertical display" mode, thereby improving the black state light leakage problem in the "vertical display" mode caused by this.

[0113] The following will be combined Figures 5 to 13 The display module of the disclosed embodiment is described in detail.

[0114] Figure 5 and Figure 6 A schematic diagram of a display module in an embodiment of the present disclosure is schematically shown, and reference is made to Figure 5 and Figure 6 The display module 200 of the embodiment of the present disclosure may refer to a large-size bar-type display module 200, wherein 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, wherein the first direction X intersects with the second direction Y. The first direction X may be Figure 5The horizontal direction in the second direction Y can be Figure 5 The vertical directions in the diagram, that is, the first direction X and the second direction Y are perpendicular to each other.

[0115] In the embodiment of the present disclosure, the long side length of the display module is much longer than the short side length, 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.

[0116] 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.

[0117] Figure 7 The exploded view of the display module according to the embodiment of the present disclosure is schematically shown. Figure 8 A plan view of a display panel according to an embodiment of the present disclosure is schematically shown.

[0118] See also Figure 7 and Figure 8 The display module in the embodiment of the present disclosure includes a display panel 210, and 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.

[0119] The display area AA may have various shapes. For example, the display area AA may be provided in various shapes such as a polygon (e.g., a rectangle) of a closed shape including straight edges, a circle, an ellipse, etc. including curved edges, and a semicircle, a semiellipse, etc. including straight edges and curved edges. In the embodiment of the present disclosure, the display area AA is provided as an area having a quadrilateral shape including straight edges, and it should be understood that this is merely an exemplary embodiment of the present disclosure, and not a limitation of the present disclosure.

[0120] The display panel 210 may further include a substrate substrate 200 and a plurality of pixel units P disposed on the substrate substrate 200 and located in the display area AA, and 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. Exemplarily, the first sub-pixel, the second sub-pixel, and the third sub-pixel may be respectively set as a red sub-pixel, a green sub-pixel, and a blue sub-pixel, but the embodiments of the present disclosure are not limited thereto.

[0121] See also Figure 8, the plurality of sub-pixels PX may be arranged in an array along the first direction X and the second direction Y, but the embodiments of the present disclosure are not limited thereto. For the convenience 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.

[0122] 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 at least located in the display area AA. The plurality of data lines DL extend along the first direction X, and the plurality of gate lines GL extend along the second direction Y. Exemplarily, 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.

[0123] The peripheral area NA may be disposed at least 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 the first direction X and a horizontal portion extending in the second direction Y.

[0124] 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.

[0125] The gate driving circuit 21 may be located on at least one side of the display area AA. Figure 8 In the embodiment shown, the gate drive circuit 21 is 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 viewed by human eyes in the "horizontal display" mode. The display binding terminal PAD1 may be located on at least one side of the display area AA. Figure 8 In the embodiment shown, the display binding terminal PAD1 is located at 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 human eyes in the "horizontal display" mode.

[0126] Fig. 9 The figure schematically shows the connection between the first circuit board and the display panel according to the embodiment of the present disclosure. Fig.10 The schematic diagram of the connection between the first circuit board and the backplane according to the embodiment of the present disclosure is schematically shown. It should be noted that for the sake of clarity, Fig.10 The first circuit board is made transparent.

[0127] Combined with reference Figures 8 to 10, the display binding terminal PAD1 is used to be electrically connected to the display driver chip IC. Exemplarily, the display binding terminal PAD1 can be electrically connected to the display driver chip IC through the chip-on-film COF and the first circuit board 230. The display driver chip IC includes a data driving circuit, which is used to sequentially latch the input data according to the clock signal timing and convert the latched data into an analog signal and then input it to each data line DL of the display panel 210. The gate driving circuit 21 is usually implemented by a shift register, which converts the clock signal into an on / off voltage and outputs it to each gate line GL of the display panel 210 respectively.

[0128] It should be noted that although Figure 8 It is shown 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. However, 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.

[0129] For example, the gate driver circuit 21 can adopt GOA technology, i.e., Gate Driver on Array. In GOA technology, the gate driver circuit 21 is directly arranged on the array substrate to replace the external chip. Each GOA unit serves as a first-level shift register, and each level of shift register is connected to a gate line GL. The scanning signals are output in turn through the shift registers at each level to realize the line-by-line scanning of the sub-pixel PX. In some embodiments, each level of shift register can also be connected to multiple gate lines GL. In this way, the development trend of high resolution and narrow frame of the display panel 210 can be adapted.

[0130] See also Figure 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, and the display panel 210 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, and 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.

[0131] In an embodiment of the present disclosure, the display panel 210 includes a liquid crystal layer and a pixel electrode and a common electrode disposed on at least one side of the liquid crystal layer. The pixel electrode and the common electrode can apply a first electric field in response to a driving signal, and the liquid crystal in the liquid crystal layer can be deflected under the action of the first electric field, thereby realizing a display function.

[0132] See also Fig.10The display module 200 also includes a first circuit board 230, which is arranged on a side of the back plate 220 away from the display panel 210, and 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 that are relatively arranged 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.

[0133] In the 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 Fig.10 The upper side of the first circuit board 230, the second side S2 of the first circuit board 230 may be Fig.10 The lower side of the first circuit board 230. The first side S1 of the first circuit board 230 may be electrically connected to the display binding terminal PAD through 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 through a chip-on-film COF.

[0134] The display module 200 further includes a flexible hook component 240 . The flexible hook component 240 is disposed on a side of the back plate 220 away from the display panel 210 .

[0135] Fig.11 and Fig.12 Schematically shows Fig.10 Sectional view along section line BB'.

[0136] Combined with reference Fig.11 and Fig.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 plate 220. The first flexible hook 242 and the second flexible hook 243 are arranged on a side of the base 241 away from the display panel 210. The first flexible hook 242 and the second flexible hook 243 are arranged relatively 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 in the second direction Y within a first preset range.

[0137] In the embodiment of the present disclosure, the base 241 can be fixed on the back plate 220 by bonding or screws, etc., which can be determined according to actual needs and is not limited here. Fig.11, the display panel 210 is arranged on the right side of the back plate 220, the first flexible hook 242 and the second flexible hook 243 are arranged on the left side of the back plate 220, and 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, and 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 within a first preset range in the second direction Y. The size of the first preset range is positively correlated with the degree of deformation of the first flexible hook 242 and the second flexible hook 243, so 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 material of the first flexible hook 242 and the second flexible hook 243 can be rubber, and the rubber material has appropriate hardness. In this way, the displacement freedom of the first circuit board 230 in the second direction Y can be guaranteed, and at the same time, the deformation of the first flexible hook 242 (the second flexible hook 243) can be prevented from being too large, causing the first flexible circuit board to jump off.

[0138] Fig.13 Schematically shows Fig.10 Schematic diagram of position A in the figure.

[0139] See also Fig.13 The display module 200 also includes a conductive foam 250, which is arranged on a 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 in the first direction X within a second preset range.

[0140] In the embodiment of the present disclosure, the conductive foam 250 is sandwiched between the back plate 220 and the first circuit board 230. The side of the conductive foam 250 facing the back plate 220 and the side facing the first circuit board 230 are both provided with adhesive, so that the conductive foam 250 can bond the back plate 220 and the first circuit board 230 together. The corners of the first circuit board 230 may be provided with a metal exposed area. The conductive foam 250 is conductive and can be pressed on the metal exposed area to electrically connect the components and traces on the metal exposed area to the ground structure on the back plate 220, thereby preventing static electricity from breaking through the first circuit board 230.

[0141] The conductive foam 250 can be deformed to a certain extent along the first direction X. The deformed conductive foam 250 can make the first circuit board 230 move a small amount in the first direction X, that is, allow the first circuit board 230 to move 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 at 40% to 60%. For example, the compression ratio of the conductive foam 250 can be set to 50%. In this way, the displacement freedom of the first circuit board 230 in the first direction X can be guaranteed, and at the same time, the deformation of the conductive foam 250 is too large to cause the bonding or grounding function to fail.

[0142] Therefore, 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. In this way, whether in the "horizontal display" mode or the "vertical 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 pulling of the chip-on-film COF. At the same time, through the cooperation of the flexible hook component 240 and the conductive foam 250, the first circuit board 230 can be allowed to move to a greater extent in the first direction X (compared with 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 pulling force 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 thereby, 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.

[0143] Combine the following Figures 5 to 30 The display module 200 in the embodiment of the present disclosure is further described.

[0144] It should be noted that, for the sake of clarity, unless otherwise specified, the following uses an 86-inch bar display module 200 as an example (the long side length is 2.2 m, the short side length is 0.36 m) to illustrate the size design of each component in the embodiment of the present disclosure.

[0145] See also Fig.11 and Fig.12In 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 area (hereinafter also referred to as the first overlapping area) has a first size 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 area (hereinafter also referred to as the second overlapping area) has a second size d32 in the second direction Y. Among them, the first fixing portion 231 has a third size d33 in the second direction Y.

[0146] The first circuit board 230 is a strip-shaped structure extending along the first direction X. The first circuit board 230 includes two short sides arranged opposite to each other along the first direction X and two long sides arranged along the second direction Y. The first flexible hook 242 and the second flexible hook 243 are clamped on 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.

[0147] See also Fig.11 The left end of the first flexible hook 242 extends downward and presses on the left surface of the upper end of the first fixing portion 231, thereby forming a first overlapping area. The left end of the second flexible hook 243 extends upward and presses on the left surface of the lower end of the first fixing portion 231, thereby forming a second overlapping area. The first dimension d31 may refer to the first overlapping area in Fig.11 The second dimension d32 may refer to the average length of the second overlapping area in the vertical direction. Fig.11 The third dimension d33 may refer to the average length of the first fixing portion 231 in the vertical direction. Fig.11 The average length in the vertical direction.

[0148] Since the first flexible hook 242 and the second flexible hook 243 are softer than the traditional hard hook, the embodiment of the present disclosure allows the first flexible hook 242 and the second flexible hook 243 to be pressed on the first circuit board 230 to a greater extent, for example, the ratio of the sum of the first dimension d31 and the second dimension 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 dimension d31 and the second dimension d32 is greater than 1 / 3 of the third dimension d33 and less than 1 / 2, and the first dimension d31 and the second dimension d32 can be the same, for example, the first dimension d31 can be set to 3.5mm to 4.5mm, for example, the first dimension d31 can be set to 3.85mm. For example, the second dimension d32 can be set to 3.5mm to 4.5mm, for example, the second dimension d32 can be set to 3.85mm. The third dimension d33 can be set to 15mm to 25mm, for example, the third dimension d33 can be set to 20mm. 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, and at the same time, the convenience of assembly can be ensured.

[0149] 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.

[0150] Combined with reference Fig.11 and Fig.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. Correspondingly, the first connecting portion 2422 may refer to the portion connected between the first pressing portion 2421 and the base, and the second connecting portion 2424 may refer to the portion connected between the second pressing portion 2423 and the base.

[0151] In the second direction Y, there is a first gap h11 between the first fixing portion 231 and the first connecting portion 2422, and there is a second gap h12 between the first fixing portion 231 and the second connecting portion 2424. In the thickness direction Z of the display module 200, there is a third gap h13 between the first pressing portion 2421 and the second pressing portion 2423 and the first fixing portion 231. In particular, either the first gap h11 or the second gap h12 is smaller than the third gap h13.

[0152] Through the first gap h11 and the second gap h12, the first circuit board 230 can have a greater degree of freedom of displacement 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.

[0153] Exemplarily, the first gap h11 can be set to 0.1 mm to 0.2 mm, for example, the first gap h11 can be set to 0.15 mm. The second gap h12 can be set to 0.1 mm to 0.2 mm, for example, the second gap h12 can be set to 0.15 mm. The third gap h13 can be set to 0.15 mm to 0.25 mm, for example, the third gap h13 can be set to 0.2 mm. In this way, the first circuit board 230 can be prevented from having a larger displacement freedom in the second direction Y, thereby preventing the gap from being too large and causing a fixing failure.

[0154] In some specific embodiments, the display module 200 further includes a front frame 260 and an optical film material 270, the optical film material 270 is located on a side of the back plate 220 close 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, and in the second direction Y, the first frame body 261 is located on a side of the back plate 220 away from the center of the display module. In the second direction Y, there is a first spacing w11 between the flexible hook assembly 240 and the first frame body 261, a second spacing w12 between the back plate 220 and the first frame body 261, and a third spacing w13 between the optical film material 270 and the first frame body 261. The first spacing w11 is greater than the second spacing w12, and less than the third spacing w13.

[0155] The first frame 261 is along Fig.11 The first frame 261 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 formed as an integral structure with the first frame 261. The third frame 262 may extend horizontally toward the center of the display module 200, and overlap with the display panel 210 in the thickness direction Z of the display module 200.

[0156] Reference Fig.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.

[0157] 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.

[0158] In some specific embodiments, the thickness h21 of the base 241 can be set to 1.5 mm, and the thickness h21 of the base 241 can include the thickness h31 of the adhesive attached between the base 241 and the back plate 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 material compression ratio of the flexible hook component 240 can be set to 50%, so that the first circuit board 230 can be effectively fixed and the first circuit board 230 can be ensured to have a small amount of freedom of displacement in the second direction Y. Among them, the thickness of the base 241 can be adjusted according to the requirements for the frame width. When the module requires a narrow frame, the thickness of the base 241 can be appropriately thickened. When the module does not require a high frame width, the thickness of the base 241 can be thinned, but the minimum thickness is greater than or equal to 0.8 mm, thereby avoiding the risk of failure of the snap function.

[0159] 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 substrate 241. This ensures that the chip-on-film (COF) has sufficient bending space under low temperature conditions (eg, -20°C).

[0160] Reference Fig.10 In some specific embodiments, the first circuit board 230 is electrically connected to the display binding terminal PAD through a plurality of chip-on-film COFs, and the plurality of chip-on-film COFs are arranged along the 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. At least one flexible hook component 240 is disposed between at least two adjacent chip-on-film COFs.

[0161] The display module 200 includes a plurality of first circuit boards 230, and the plurality of first circuit boards 230 are arranged along a first direction X. Each first circuit board 230 is electrically connected to a display binding terminal PAD through a plurality of COFs. Fig.10 In the horizontal direction, on the same first circuit board 230, at least one flexible hook component 240 is arranged between every two adjacent chip-on-films (COFs), so that the flexible hook components 240 can be distributed more evenly along the first direction X.

[0162] Exemplarily, the spacing between two adjacent flexible hook components 240 can be set to 250mm to 350mm, for example, the spacing between two adjacent flexible hook components 240 is 295mm. The size of the flexible hook component 240 in the first direction X can be set to 8mm to 12mm, for example, the size of the flexible hook component 240 in the first direction X can be set to 10mm. In this way, the flexible hook components 240 can maintain an appropriate spacing and be evenly distributed on the back plate 220 on the basis of ensuring the effectiveness of fixation. At the same time, the size design of the flexible hook component 240 in the first direction X can, on the one hand, enable the flexible hook component 240 to have enough size to be pressed on the first circuit board 230, and on the other hand, minimize the space occupied by the flexible hook component 240 in the first direction X.

[0163] Combined with reference Fig.10 and Fig.12 In some specific embodiments, the back plate 220 includes a back plate body ZT and a first bending portion 221 and a second bending portion 222 disposed on the back plate body ZT, the first bending portion 221 and the second bending portion 222 are bent toward the display panel 210, and the first bending portion 221 and the second bending portion 222 are disposed opposite to each other in the second direction Y. In the second direction Y, the first circuit board 230 is located between the first bending portion 221 and the second bending portion 222, and the spacing between the first bending portion 221 and the first circuit board 230 is smaller than the spacing between the second bending 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 bending portion 221.

[0164] Reference Fig.10 The first bending portion 221 and the second bending portion 222 may refer to the bending portions located on the two long sides of the back plate 220, wherein the first bending portion 221 may refer to the bending portion on the upper side, and the second bending portion 222 may refer to the bending portion on the lower side. Compared with the second bending portion 222, the first bending portion 221 is closer to the first circuit board 230.

[0165] Reference Fig.12 The first bending portion 221 is bent toward the right side, and the upper side edge of the first flexible hook 242 is located between the lower side edge of the first bending portion 221 and the upper side edge 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.

[0166] Reference Fig.13In 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.

[0167] Reference Fig.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 is provided with a bare metal area. For example, the display module 200 includes a plurality of first circuit boards 230, the plurality of first circuit boards 230 are arranged along the first direction X, and two adjacent first circuit boards 230 are electrically connected to the display driver chip IC through 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 away from the second circuit board B1, wherein the second corner is provided with a bare metal area.

[0168] In the embodiment of the present disclosure, the conductive foam 250 is conductive, one end of which is electrically connected to the metal exposed area, and the other end of which is electrically connected to the grounding structure on the back plate 220, so as to achieve grounding of the metal exposed area, thereby preventing static electricity from breaking through the first circuit board 230. That is to say, in the embodiment of the present disclosure, the conductive foam 250 can not only enable the first circuit board 230 to have a certain degree of displacement freedom in the first direction X, but also meet the grounding requirements of the first circuit board 230.

[0169] In some specific embodiments, the size of the conductive foam 250 in the first direction X is set to 4 mm to 6 mm, the size of the conductive foam 250 in the second direction Y is set to 4 mm to 6 mm, and the thickness of the conductive foam 250 is set to 1 mm to 3 mm. In this way, the first circuit board 230 can be effectively fixed on the basis of having a certain degree of displacement freedom in the first direction X. At the same time, the conductive foam 250 can effectively cover the metal exposed area to meet the grounding requirements.

[0170] For example, the conductive foam 250 may be square, but this does not constitute a limitation to the embodiments of the present disclosure, and the conductive foam 250 may be in any suitable shape. For example, the side length bc of the conductive foam 250 is 5 mm, the thickness is 2 mm, and the conductive foam 250 may be slightly smaller than the metal exposed area, for example, less than 1 to 2 mm.

[0171] Fig.14 The plan view of the optical film material in the embodiment of the present disclosure is schematically shown. Fig.15 Schematically shows the Figure 5 Sectional view along the center line CC′.

[0172] Combined with reference Fig.14 and Fig.15 In some specific embodiments, the display module 200 further includes an optical film material 270 and a plastic frame 280. The optical film material 270 is disposed between the back plate 220 and the display panel 210. The optical film material 270 includes a third side S3 and a fourth side S4 disposed opposite to each other along the first direction X. The third side S3 is provided with an ear-hanging hole V. The plastic frame 280 includes a second frame body 281. The second frame body 281 extends along the thickness direction Z of the display module 200. The second frame body 281 is located on the third side S3 of the optical film material 270 away from the center of the optical film material 270. The plastic frame 280 further includes an ear-hanging structure 282 disposed on the second frame body 281. The ear-hanging structure 282 extends toward the optical film material 270. In the thickness direction Z of the display module 200, the ear-hanging structure 282 overlaps with the ear-hanging hole V, and the ear-hanging structure 282 passes through the ear-hanging hole V in the overlapping area.

[0173] The optical film material 270 may include a composite prism 271 and a diffuser 272, etc. The third side S3 and the fourth side S4 of the optical film material 270 may refer to two short sides of the optical film material 270 that are oppositely arranged. When the display module 200 is in the "vertical display" mode, the fourth side S4 of the optical film material 270 is the side close to the ground, and the third side S3 is the side away from the ground.

[0174] For example, the second frame 281 is along Fig.15 The ear structure 282 extends in the vertical direction. Fig.15 The ear structure 282 extends in the horizontal direction, and the portion of the ear structure 282 located above the ear hole V is provided with an ear rib extending downward, and the ear rib passes through the ear hole V to form a limit for the ear hole V. Compared with the solution in which the ear rib is provided on the back plate 220 in the traditional solution, the ear rib is provided on the plastic frame 280, which can save the corresponding structure on the back plate 220, thereby facilitating the realization of a narrow frame.

[0175] 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.

[0176] In the embodiments of the present disclosure, the display module 200 can be applied to a wide temperature environment, and the upper and lower limits of the temperature 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 be deformed. 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 sinks synchronously, causing deviation from the predetermined position, which will cause obvious light leakage problems.

[0177] Fig.16A A schematic diagram of the auxiliary fixing tape in an embodiment of the present disclosure is schematically shown.

[0178] Combination Fig.10 and Fig.16A In some specific embodiments, a hook protrusion TC is fixedly provided on the third side S3 of the optical film material 270, and the hook protrusion TC is located on the side of the hook hole away from the center of the optical film material, and the display module 200 further includes an auxiliary fixing tape TA. The back panel 220 includes a back panel body ZT and a third bending portion 223 and a fourth bending portion 224 provided on the back panel body ZT, the third bending portion 223 and the fourth bending portion 224 are bent toward the display panel 210, and the third bending portion 223 and the fourth bending portion 224 are arranged opposite to each other in the first direction X. The third bending portion 223 is located on a side away from the center of the display module 200, and is flush with the fourth side S4S4 of the optical film material 270. The auxiliary fixing tape TA includes a winding portion TA1 and a first bonding portion TA2, the winding portion TA1 passes through the hook hole V and is wound on the hook hole protrusion TC, and the first bonding portion TA2 is bonded to the fourth bending portion 224.

[0179] In the embodiment of the present disclosure, the third bending portion 223 and the fourth bending portion 224 may refer to bending portions located on two opposite short sides of the back plate 220. For example, the third bending portion 223 is located at Fig.10 At the left end of the middle back plate 220, the fourth bending portion 224 is located Fig.10 The right end of the middle back plate 220.

[0180] 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 of the third bending portion 223 away from the center of the display module 200 are approximately located in the same horizontal plane.

[0181] The winding portion TA1 may include a strip shape. For example, the winding portion TA1 is wound around Fig.16AThe 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 still remain stable. At this time, even if the plastic frame 280 is deformed to cause the hanging ear structure 282 to sink, the auxiliary fixing tape TA can tightly fasten the hanging ear hole V, thereby fixing the optical film material 270 at a predetermined position to prevent the hanging ear hole V from deviating and causing light leakage.

[0182] Fig. 16B The schematic diagram of the first groove in the embodiment of the present disclosure is schematically shown, wherein, for the sake of clarity, Fig. 16B Only a portion of the fourth bending portion 224 that is closer to the first groove V1 is shown.

[0183] Combined with reference Fig.16A and Fig. 16B In some specific embodiments, a first groove AC1 is provided on a side of the fourth bending portion 224 close to the display panel. The first groove AC1 is recessed toward the back panel body ZT, and the ear hook protrusion TC overlaps the first groove AC1. Fig. 16B The lower part of the optical film 270 is recessed, thereby leaving space for the ear hook protrusion TC, limiting the displacement of the ear hook protrusion TC, and thus ensuring the stability of the optical film material 270.

[0184] In some specific 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 , and a gap is formed between the first bonding portion TA2 and the second frame 281 .

[0185] 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.

[0186] 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.

[0187] In some specific embodiments, the auxiliary fixing tape TA further includes an intermediate portion TA3 between the wrapping portion TA1 and the first bonding portion TA2, and the end of the wrapping portion TA1 is bonded to the intermediate portion TA3 after passing around the edge of the ear hanging hole V. The fourth bending portion 224 includes a second groove AC2, which is recessed toward a side away from the second frame 281, and the end of the wrapping portion TA1 is at least partially located in the second groove AC2. For example, referring to Fig.16A , the bonding part of the end of the winding part TA1 and the middle part TA3 is located in the second groove AC2, and the second groove AC2 can make more space for the bonding of the two. Among them, the end of the winding part TA1 and the middle part TA3 overlap in the first direction X, and in the overlapping area, the side of the end of the winding part TA1 facing the middle part and the side of the middle part TA3 facing the end of the winding part TA1 are bonded to each other. The part of the end of the winding part TA1 and the middle part TA3 located in the above-mentioned overlapping area is also the bonding part of the two.

[0188] Fig.17 The schematic diagram of the auxiliary fixing tape after unfolding in the embodiment of the present disclosure is schematically shown.

[0189] Reference Fig.17 In some specific embodiments, a dimension d41 of the first bonding portion TA2 in the second direction Y is greater than a 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 corner.

[0190] For example, the auxiliary fixing tape TA can be T-shaped after being unfolded, and the dimension d42 of the middle part TA3 in the second direction Y is greater than or equal to 8mm. The length of the winding part TA1 must be sufficient to effectively bond with the middle part TA3 after the film material is wrapped around the ear, and the bonding width is greater than or equal to 1mm to ensure that the auxiliary fixing tape TA effectively fixes the optical film material 270. The radius of the arc corner is greater than or equal to 0.5mm to avoid strength failure caused by corner tearing. Optionally, the dimension d41 of the first bonding part TA2 in the second direction Y is greater than or equal to 25mm, and the dimension d43 of the first bonding part TA2 in the display module thickness direction Z is greater than or equal to 6mm.

[0191] In some specific embodiments, the first bonding portion TA2 is bonded to two adjacent side surfaces of the fourth bending portion 224. For example, the first bonding portion TA2 is bonded to the surface of the fourth bending portion 224 facing the second frame 281 and the surface facing away from the display panel 210, which can increase the bonding area and disperse the force to improve the bonding stability.

[0192] Fig.18 and Fig.19 A schematic diagram of a first light shielding structure in an embodiment of the present disclosure is schematically shown. Fig. 20 Schematic diagram showing light leakage due to shrinkage of the composite prism and diffuser.

[0193] Reference Fig.10 , Figures 18 to 20 In some specific embodiments, the optical film material 270 includes a composite prism 271 and a diffuser 272. In the first direction X, the diffuser 272 includes a first surface M1 and a second surface M2 that are oppositely disposed along the thickness direction of the diffuser 272. The first surface M1 is located on a side of the second surface M2 close to the composite prism 271. A first light shielding structure 2721 is disposed on the first surface M1. The first surface M1 includes a hanging ear side and a hanging ear opposite side that are oppositely disposed along the first direction X. The hanging ear hole is located on the hanging ear side, and the first light shielding structure 2721 is located on the hanging ear opposite side.

[0194] For example, the first surface of the diffusion sheet 272 may refer to Fig.19 The upper surface of the diffuser 272, the second surface of the diffuser 272 may refer to Fig.19 The lower surface of the middle diffuser 272, the ear hanging side is the side of the diffuser 272 provided with the ear hanging hole V in the aforementioned embodiment, and the ear hanging side is the side of the diffuser 272 opposite to the ear hanging side, for example, Fig.19 The left side of the middle diffusion sheet 272.

[0195] In the embodiment of the present disclosure, the display module can work at 80°C. At 80°C, both the composite prism 271 and the diffuser 272 shrink, but the shrinkage degree of the composite prism 271 is greater than that of the diffuser 272. Fig. 20 The contraction degree of the composite prism 271 is much greater than that of the diffusion sheet 272, so that the diffusion sheet 272 is partially exposed, which will cause the light G emitted from the light source assembly to be incident on the side of the composite prism 271 through the diffusion sheet 272, thereby causing light leakage. Fig.19 In the embodiment of the present disclosure, the first light shielding structure 2721 can play a light shielding role, thereby improving the light leakage problem to a certain extent.

[0196] In some specific embodiments, the size of the first light shielding structure in the first direction is set to 2 mm to 4 mm, for example, the size d51 of the first light shielding structure 2721 in the first direction X is 3 mm. In this way, at 80°C, the first light shielding structure 2721 can cover the portion of the diffusion sheet 272 exposed by the composite prism 271, so that even if the composite prism 271 shrinks and causes part of the diffusion sheet 272 to be exposed, since the part is blocked by the first light shielding structure 2721, light will not be incident on the composite prism 271 from the side.

[0197] In some specific embodiments, the first light shading structure 2721 can also cover the edge of the double-check prism after the composite prism 271 shrinks. For example, the first light shading 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 ≥ 1 mm, thereby preventing the first light shading structure 2721 from overlapping with the edge of the composite prism 271 due to process fluctuations.

[0198] 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.

[0199] Fig.21 The schematic diagram of the light source assembly and the supporting foam in the embodiment of the present disclosure is schematically shown. Fig. 22 Schematically shows the Fig.21 Sectional view along the median section line DD′.

[0200] Combined with reference Fig.21 and Fig. 22In some specific embodiments, the back plate 220 includes a fifth side S5 and a sixth side S6 that are relatively arranged along the second direction Y, and the flexible hook assembly 240 is located on the fifth side S5. The display module 200 also includes: a light source assembly LD and a supporting foam ZC. The light source assembly LD is arranged on the sixth side S6 of the back plate 220. The light source assembly LD extends along the first direction X. The light emitting direction of the light source assembly LD intersects with the thickness direction Z of the display module 200. The light source assembly LD includes a first end D1 and a second end (not shown in the figure) that are relatively arranged along the first direction X. The supporting foam ZC extends along the first direction X. The supporting foam ZC includes a third end D2 and a fourth end that are relatively arranged along the first direction X. The first end D1 is flush with the third end D3, and the second end is flush with the fourth end.

[0201] The fifth side S5 and the sixth side S6 of the back plate 220 may refer to two long sides of the back plate 220 that are oppositely arranged, wherein the fifth side S5 may be Fig.21 The upper side of the middle back plate 220, the sixth side S6 can be Fig.21 The lower side of the middle back plate 220. The flexible hook assembly 240 and the light source assembly LD are respectively arranged on the upper side and the lower side. However, this does not constitute a display of the embodiment of the present disclosure, and the light source assembly LD can be arranged at any suitable position on the back plate 220.

[0202] In the 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. Fig.21 The left end (third end) of the light source assembly LD is flush with the left end (first end). It should be understood that Fig.21 Only a part of the display module 200 is shown. In another part of the display module 200, the right end (fourth end) of the supporting foam ZC and the right end (second end) of the light source assembly LD are also flush, and their structure can be referred to. The left end of the supporting foam ZC and the left end of the light source assembly LD are not described here.

[0203] 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.

[0204] Optionally, the distance between the supporting foam ZC and the structure adjacent thereto may be set to 0.3 mm to 0.6 mm.

[0205] Fig.23 The schematic diagram schematically shows that the reflective sheet is exposed after the light guide plate is retracted in the embodiment of the present disclosure.

[0206] Combined with reference Figure 7 , Figure 21 to Figure 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 that are relatively arranged along the thickness direction of the reflective sheet 310. The third surface M3 is located on a side of the fourth surface M4 close 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 relatively arranged in the second direction Y. The eighth side S8 is located on a side of the seventh side S7 close to the light source assembly LD. The second light shielding structure 311 is located on the eighth side S8.

[0207] Reference Figure 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 be two long sides of the reflector 310 that are opposite to each other. For example, the seventh side S7 may refer to Fig.23 The eighth side S8 of the reflector 310 may refer to the upper side of the reflector 310. Fig.23 The lower side of the middle reflective sheet 310.

[0208] At -20°C, the light guide plate 320 and the reflective sheet 310 shrink, and the shrinkage degree of the light guide plate 320 is greater than that of the reflective sheet 310, which causes the reflective sheet 310 to be exposed by the light guide plate 320, thereby causing the light emitted by the light source assembly LD to directly illuminate the reflective sheet 310 and cause poor display (such as light leakage). In the embodiment of the present disclosure, the second light shielding structure 311 can play a light shielding role after the light guide plate 320 shrinks, thereby preventing part of the light from the light source assembly LD from directly irradiating the reflective sheet 310.

[0209] 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 reflector 310 close to the light source assembly LD, so that at -20°C, the second light shielding structure 311 can cover the area of ​​the reflector 310 that is most severely irradiated by the light source assembly LD, and at normal temperature (for example, above 0°C), the second light shielding structure 311 only covers the two corners of the reflector 310, thereby reducing the influence of the second light shielding structure 311 on the reflection area.

[0210] Optionally, the second light shielding structure 311 may include black ink coating or black tape.

[0211] In some specific embodiments, the display module further includes a third shading structure ZG, and the third shading structure ZG is integrally connected to the second shading structure 311. The back plate 220 includes a fifth surface M5 and a sixth surface M6 that are arranged opposite to 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 close to the display panel 210, and the third shading structure ZG is located on the sixth surface M6.

[0212] Reference Figure 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 shine on the back panel 220 and cause poor display (for example, light leakage caused by reflection from the back panel 220). In the embodiment of the present disclosure, the third shading structure ZG can improve the stability of the second shading structure 311 and prevent the second shading structure 311 from falling off. At the same time, the third shading structure ZG can also play a shading role after the light guide plate 320 shrinks, thereby preventing part of the light from the light source assembly LD from directly shining on the back panel 220.

[0213] In some specific embodiments, the size of the third light shielding structure ZG in the first direction X is set to 3mm-5mm, for example, the size of the third light shielding structure ZG in the first direction X is set to 4mm. 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 better improving the reflection problem.

[0214] Fig.24 Schematically shows the Figure 5 Sectional view along the midline EE′, Fig.25 Schematically shows the Figure 5 Sectional view along the midline FF′, Fig.26 A schematic diagram of a retaining wall structure in an embodiment of the present disclosure is schematically shown. Fig. 27 A schematic diagram of shading by a retaining wall in an embodiment of the present disclosure is schematically shown.

[0215] Combination Figure 7 , Figure 24 to Figure 27In 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 relatively arranged 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 that are relatively arranged 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 disposed on a side of the first side wall CB1 that is away from the center of the display module, and a second retaining wall DQ2 is disposed on a side of the second side wall CB2 that is 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.

[0216] The multiple light-emitting devices D on the light source assembly LD are arranged along the first direction X. The first sub-frame K1 and the second sub-frame K2 can be a U-shaped structure. The multiple third sub-frames K3 are connected between the first sub-frame K1 and the second sub-frame K2, thereby forming a ring-shaped plastic frame 280. In other words, the plastic frame 280 is formed by splicing multiple sub-frames. In the first direction X, the size of the first sub-frame K1 and the second sub-frame K2K2 is small, while the size of the third sub-frame K3 is large. In a wide temperature environment, the third sub-frame K3 is prone to shrinkage. When the third sub-frame K3 shrinks, a larger gap is likely to form between two adjacent third sub-frames K3. Refer to Fig. 27 Ideally, all the light emitted by the light emitting device D enters the light guide plate 320. However, the light emitting surface of the light emitting device D is large, and part of the light emitted by it is emitted upward. When a large gap is generated between two adjacent third sub-frames K3, the light emitted upward by the light emitting device D will pass through the gap and emit, thereby causing a light phenomenon.

[0217] Reference Fig.25 The third subframe K3 includes a first splicing portion K31 located at the right end and a second splicing portion K32 located at the left end, wherein Fig.25 In the figure, only the right end of the third subframe K3 on the left and the left end of the third subframe K3 on the right are shown. The third subframe K3 on the left is spliced ​​with the second splicing part K31 on the left end of the third subframe K3 on the right through the first splicing part K31 on the right end.

[0218] Reference Fig.26A first blocking wall DQ1 is set on the first splicing part K31, and a second blocking wall DQ2 is set on the second splicing part 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 by the light-emitting device D, thereby preventing light leakage.

[0219] 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-2.5 mm. In this way, the first design dimension is greater than or equal to the sum of the maximum shrinkage (compared to normal temperature) of two adjacent third sub-frames K3 at -20°C. In this way, it can be ensured that at -20°C, the first retaining wall DQ1 and the second retaining wall DQ2 can always block the light emitted upward by the light-emitting device D, thereby more effectively improving the light leakage problem.

[0220] In some specific embodiments, the precise positioning structure of the third sub-frame K3 and the back plate 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 one of the first splicing portion K31 and the second splicing portion K32 that is away from the center of the display module 200. Exemplarily, 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. Correspondingly, the precise positioning structure of the third sub-frame K3 on the right is located at the splicing of 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 of the third sub-frame K3 and the first sub-frame K1. Among them, the precise positioning structure may refer to a structure on the third sub-frame K3 for mounting in cooperation with the back plate 220. Optionally, all manufacturing tolerances and statistical tolerances can be accumulated at the joints 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), so that the shrinkage position of the third sub-frame K3 is limited to the joints of two adjacent third sub-frames K3. Furthermore, the light leakage problem caused by shrinkage is concentratedly improved at the joints by the first retaining wall DQ1 and the second retaining wall DQ2.

[0221] 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, thereby minimizing the seam size drift caused by assembly tolerance. The gap Gap2 between two adjacent third subframes K3 can be set to 0.2 mm, thereby minimizing the seam size.

[0222] Fig.28A schematic diagram schematically shows the gap between the third sub-frame and the front frame in an embodiment of the present disclosure, Fig.29 A schematic diagram of the limiting structure in an embodiment of the present disclosure is schematically shown.

[0223] Combination Fig.28 and Fig.29 In the embodiment of the present disclosure, since the display module 200 is a strip 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 deviate toward the front frame 260. For example, the upper third sub-frame K3 is likely to deviate toward Fig.28 This may easily cause the third sub-frame K3 to deviate from the predetermined position, thereby causing light leakage.

[0224] In view of this, in some specific embodiments, the display module 200 further includes a front frame 260, and in the overlapping area 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, and the limiting structure XW may include an adhesive tape or a limiting rib, etc. The limiting structure XW can prevent the third sub-frame K3 from deviating toward the front frame 260, thereby limiting the third sub-frame K3 at a predetermined position to prevent light leakage.

[0225] Through the above-mentioned method, 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.

[0226] At the same time, the multiple sub-frames in the embodiment of the present disclosure are shielded by the staggered retaining walls DQ, so that 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 better, for example, the picture uniformity can reach 75%.

[0227] Fig.30 The second exploded view of the display module in the embodiment of the present disclosure is schematically shown. Fig.30 In some specific embodiments, the display module may further include a protective cover 330 of the first circuit board 230 and other circuit boards 340, etc. The specific details may be determined according to actual needs and are not limited here.

[0228] An embodiment of the present disclosure further provides a display device, comprising the above-mentioned display module 200 .

[0229] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations and / or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0230] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of 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, there is a second distance between the back plate and the first frame, and there is a third distance between the display panel and the first frame; 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, 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 away from the center of the display module, and a second retaining wall is provided 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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