Backlight module and display device

Abstract

The invention provides a backlight module which comprises a frame body, a light-emitting substrate, a lamp cup structure and a diffusion plate, and the frame body is provided with a bottom plate; the light-emitting substrate comprises a circuit board and a plurality of light-emitting elements arranged on the circuit board in an array mode, and the circuit board is arranged on the bottom plate; the lamp cup structure is arranged on the light-emitting substrate and comprises a spacer and a supporting body, the spacer is fixedly arranged on the circuit board and forms a plurality of hollow parts to surround the corresponding light-emitting elements, the supporting body is located on the bottom plate, the supporting body is connected to the periphery of the spacer to surround the circuit board, and the supporting body is provided with a first supporting part; the diffusion plate is supported on the first supporting part. The invention further discloses a display device which comprises the backlight module and the display panel, and the display panel is arranged on the backlight module.

Description

Technical Field

[0001] The invention relates to a backlight module and a display device using the backlight module. Background Art

[0002] In current in-vehicle display devices, the display panel is arranged on the backlight module, which includes a frame, a diffuser, a lamp cup structure and a light-emitting unit, wherein the light-emitting unit and the lamp cup structure are located at the bottom of the frame, and the diffuser is carried on the bearing surface of the frame and is located above the light-emitting unit and the lamp cup structure. Since the frame needs to reserve enough space for the diffuser and the periphery of the lamp cup structure, the peripheral size of the frame increases, reducing the screen-to-body ratio of the in-vehicle display device. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a backlight module, which includes:

[0004] A frame having a bottom plate;

[0005] A light-emitting substrate, comprising a circuit board and a plurality of light-emitting elements arranged in an array on the circuit board, wherein the circuit board is arranged on the bottom plate;

[0006] A lamp cup structure, wherein the lamp cup structure is arranged on the light-emitting substrate, and the lamp cup structure comprises:

[0007] a spacer, fixedly disposed on the circuit board and forming a plurality of hollow portions to surround the corresponding light emitting elements, and

[0008] A support body, located on the bottom plate, connected to the periphery of the spacer to surround the circuit board, and having a first support portion; and

[0009] A diffusion plate is carried on the first supporting portion.

[0010] In an embodiment of the backlight module of the present invention, a first side wall of the first supporting portion is opposite to a second side wall of the circuit board and has a first gap g1 , and the first gap g1 corresponds to a size of the second side wall.

[0011] In one embodiment of the backlight module of the present invention, the support body further includes a second support portion and is stepped. In the thickness direction of the backlight module, the second support portion is arranged on the first support portion, and a third side wall of the second support portion is opposite to a fourth side wall of the diffuser plate and has a second interval g2, wherein the second interval g2 is larger than the first interval g1.

[0012] In one embodiment of the backlight module of the present invention, the frame has a first side plate connected to the bottom plate, a third gap g3 is provided between a fifth side wall of the first support portion and the first side plate, the fifth side wall is opposite to the first side wall, wherein the third gap g3 is larger than the first gap g1.

[0013] In one embodiment of the backlight module of the present invention, the first supporting portion further has a sixth side wall and a first supporting surface connected to each other, the diffusion plate is supported on the first supporting surface, the sixth side wall faces the plurality of light-emitting elements, and in the thickness direction of the backlight module, the sixth side wall has a first dimension d1, and the spacer has a second dimension d2, wherein 0.7<d2 / d1<0.9.

[0014] In one embodiment of the backlight module of the present invention, the backlight module further includes a first elastic adhesive component, the second supporting portion of the backlight module has a third side wall and a second bearing surface connected to each other, the first elastic adhesive component is arranged on the second bearing surface, and in the first direction, the first bearing surface has a third dimension d3, and the second bearing surface has a fourth dimension d4, wherein 0.4<d4 / d3<0.6.

[0015] In an embodiment of the backlight module of the present invention, the ratio of the first interval g1 to the third dimension d3 is 0.125<g1 / d3<0.3; or, the ratio of the third interval g3 to the fourth dimension d4 is 0.25<g3 / d4<0.6.

[0016] In an embodiment of the backlight module of the present invention, the support body further has a third support portion, the third support portion is disposed on the fifth side wall, and the third support portion is connected to the first side plate of the frame body by mortise and tenon joints.

[0017] In an embodiment of the backlight module of the present invention, the third supporting portion protrudes from the fifth side wall, and the first side plate is provided with a corresponding recessed portion. In the thickness direction of the backlight module, the size of the recessed portion does not exceed half of the size of the first side plate.

[0018] In one embodiment of the backlight module of the present invention, corresponding to each side of the diffusion plate, the support body includes a first part, a second part, a third part and a fourth part, each part includes the first supporting portion and the second supporting portion, wherein the first supporting portion of the first part is adhesively fixed to the base plate, and there is no adhesive layer between the circuit board, the second part, the third part and the fourth part and the base plate.

[0019] The present invention further provides a display device, comprising the aforementioned backlight module and a display panel, wherein the display panel is disposed on the backlight module.

[0020] In one embodiment of the display device of the present invention, the display device further includes a cover plate and a second elastic adhesive component, the display panel is fixedly disposed on the cover plate, the frame has a third supporting surface corresponding to the periphery of the cover plate, and the second elastic adhesive component is disposed on the third supporting surface and fixedly connected to the cover plate.

[0021] In one embodiment of the display device of the present invention, the frame includes a first side panel, a second side panel, a third side panel and a fourth side panel connected to the bottom panel, the display panel has a circuit binding area, the side where the circuit binding area is located corresponds to the first side panel, the support body is connected to the first side panel by mortise and tenon, and is not connected to the second side panel, the third side panel and the fourth side panel.

[0022] Compared with the prior art, the present invention discloses a backlight module and a display device, which reduces the interval between the frame, the diffuser plate and the display panel by setting the diffuser plate on the first supporting portion of the lamp cup structure support body, thereby providing a high screen-to-body ratio of the display device.

[0023] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A cross-sectional schematic diagram of a backlight module in the prior art is shown.

[0025] Figure 2 A cross-sectional schematic diagram of a display device in one embodiment of the present invention is shown.

[0026] Figure 3 A schematic top view of a backlight module in one embodiment of the present invention is shown.

[0027] Figure 4 Illustrate the present invention Figure 2 A partial schematic diagram of a backlight module in an embodiment.

[0028] Figure 5 A cross-sectional schematic diagram of a backlight module in another embodiment of the present invention is shown.

[0029] Figure 6 A schematic diagram of a display device in an embodiment of the present invention is shown.

[0030] Wherein, the reference numerals are:

[0031] 1', 1...frame

[0032] 11', 11... bottom plate

[0033] 12…First side panel

[0034] 121…concave

[0035] 13…Second side panel

[0036] 14…Third side panel

[0037] 15…Fourth side panel

[0038] 2', 2...luminescent substrate

[0039] 21…Circuit Board

[0040] 22…Light-emitting element

[0041] 3', 3... lamp cup structure

[0042] 31…Support

[0043] 311…first support portion

[0044] 312…Second support portion

[0045] 313…Third support part

[0046] 31a…Part 1

[0047] 31b…Part 2

[0048] 31c…Part 3

[0049] 31d…Part 4

[0050] 32…Spacer

[0051] 33…Hollowout

[0052] 4', 4...Diffuser Plate

[0053] 5…Optical film

[0054] 6…Cover

[0055] 7…first elastic adhesive member

[0056] 8…Second elastic adhesive member

[0057] S1…First side wall

[0058] S2…Second side wall

[0059] S3…Third side wall

[0060] S4…Fourth side wall

[0061] S5…Fifth side wall

[0062] S6…Sixth side wall

[0063] B1…First bearing surface

[0064] B2…Second bearing surface

[0065] B3…The third bearing surface

[0066] d1…first dimension

[0067] d2…second dimension

[0068] d3…third dimension

[0069] d4…fourth dimension

[0070] d5…fifth dimension

[0071] g1…first interval

[0072] g2…second interval

[0073] g3…the third interval

[0074] 100, 200...backlight module

[0075] 1000, 2000…Display device

[0076] x…first direction DETAILED DESCRIPTION

[0077] The following specific embodiments and accompanying drawings are used to illustrate the embodiments disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. However, the contents disclosed below are not intended to limit the scope of protection of the present invention. Without departing from the spirit of the present invention, those skilled in the art can implement the present invention with other different embodiments based on different viewpoints and applications.

[0078] For the sake of clarity, the drawings of the present invention are simplified schematic diagrams to illustrate the basic structure of the present invention. Therefore, the structures shown in the drawings of the present invention are not drawn according to the shape and size ratio of the actual implementation. For example, the size of a specific component is exaggerated for the convenience of explanation.

[0079] In addition, it should be understood that when a component such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another component, it can be directly on or connected to the other component, or intermediate components may also exist. In contrast, when a component is referred to as being "directly on" or "directly connected to" another component, there are no intermediate components. As used herein, "connected" can refer to physical and / or electrical connections. Furthermore, "electrically connected" or "coupled" can mean the presence of other components between two components.

[0080] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as understood by a person of ordinary skill in the art to which the invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present invention, and will not be interpreted as an idealized or overly formal meaning unless explicitly defined as such herein.

[0081] In addition, it should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various components, parts, regions, layers and / or parts, these components, parts, regions, and / or parts should not be limited by these terms. These terms are only used to distinguish one component, part, region, layer or part from another component, part, region, layer or part. Therefore, the "first component", "component", "region", "layer" or "part" discussed below may be referred to as a second component, part, region, layer or part without departing from the teachings of this article.

[0082] It should be understood that references in the specification to "one embodiment", "an embodiment", "an example embodiment", etc., mean that the embodiment being described may include certain features, structures, or characteristics, but does not necessarily include these certain features, structures, or characteristics. In addition, such expressions do not refer to the same embodiment. Further, when a certain feature, structure, or characteristic is described in conjunction with an embodiment, it is indicated that it is within the knowledge of those skilled in the art to combine such feature, structure, or characteristic into other embodiments, whether or not it is explicitly described.

[0083] Certain words are used in the specification and subsequent claims to refer to specific modules, components or parts. It should be understood by those of ordinary skill in the art that technical users or manufacturers may refer to the same module, component or part by different nouns or terms. This specification and subsequent claims do not use differences in names as a way to distinguish modules, components or parts, but use differences in the functions of modules, components or parts as the criteria for distinction. "Including" and "including" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0084] Furthermore, in the following specification and claims, reference will be made to a number of terms which shall be defined as having the following meanings. The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "Optional" or "optionally" means that the subsequently described event or circumstance may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

[0085] See also Figure 1 , Figure 1 A cross-sectional schematic diagram of a backlight module in the prior art is shown. Figure 1 As shown, in one embodiment of the backlight module in the prior art, the light-emitting substrate 2', the lamp cup structure 3' and the diffuser plate 4' are arranged on the frame 1', wherein the diffuser plate 4' is arranged on the step structure of the frame 1', the light-emitting substrate 2' is arranged on the bottom plate 11' of the frame 1', and the lamp cup structure 3' is arranged on the light-emitting substrate 2'. Considering the expansion and assembly tolerance of the periphery of the diffuser plate 4' and the lamp cup structure 3' (whose size is much smaller than the size of the retaining wall structure between the adjacent light-emitting elements of the lamp cup structure 3' on the light-emitting substrate 2'), the frame 1' needs to reserve space for the diffuser plate 4' and the lamp cup structure 3', thereby increasing the peripheral size of the frame 1' and reducing the screen-to-body ratio of the vehicle-mounted display device using this backlight module. In order to solve the above problems, please refer to Figures 2 to 3 , Figure 2 FIG. 1 is a cross-sectional schematic diagram of a display device 1000 according to an embodiment of the present invention. Figure 3 A schematic top view of a backlight module 100 in one embodiment of the present invention is shown. The present invention provides a backlight module 100, which includes: a frame 1, a light-emitting substrate 2, a lamp cup structure 3 and a diffuser 4. The frame 1 has a bottom plate 11; the light-emitting substrate 2 includes a circuit board 21 and a plurality of light-emitting elements 22 arranged in an array on the circuit board 21, and the circuit board 21 is arranged on the bottom plate 11; the lamp cup structure 3 is arranged on the light-emitting substrate 2, and the lamp cup structure 3 includes a spacer 32 and a support body 31. The spacer 32 is fixedly arranged on the circuit board 21 and forms a plurality of hollow portions 33 to surround the corresponding light-emitting elements 22. The support body 31 is located on the bottom plate 11, and the support body 31 is connected to the periphery of the spacer 32 to surround the circuit board 21. The support body 31 has a first support portion 311; and the diffuser 4 is carried on the first support portion 311. In one embodiment, an optical film group (including a plurality of optical films 5) for enhancing transmittance and brightness is also arranged on the diffuser 4. Furthermore, in one embodiment, the backlight module 100 is applied to a display device 1000, and the display device further includes a display panel (not shown), which is disposed on the backlight module. The display device is provided with a cover plate 6 on the frame 1, and the display panel may be disposed on the side of the cover plate 6 facing the backlight module, and the frame 1 and the cover plate 6 may be bonded and fixed by an adhesive.

[0086] In one embodiment, the first support portion 311 has a notch design corresponding to the circuit board 21 and forms a first side wall S1. The first side wall S1 of the first support portion 311 is opposite to the second side wall S2 of the circuit board 21 and has a first interval g1. The first interval g1 corresponds to the size of the second side wall S2 (specifically, the size of the second side wall S2 on the thickness of the backlight module). By setting the first interval g1, space can be provided for the circuit board 21 to heat up and expand, and space can be provided for the tolerance of the circuit board 21 to facilitate assembly. In one embodiment, the first interval g1 can be 0.2mm, but not limited to this. In addition, the first interval g1 corresponds to the size of the second side wall S2 (in the thickness direction of the backlight module 100), which can be understood as the first interval g1 is equal to or smaller than the size of the second side wall S2, but not limited to this. In addition, the size of the first support portion 311 at the first interval g1 in the thickness direction of the backlight module 100 is equal to or larger than the size of the second side wall S2, further providing space for the circuit board 21 to heat up and expand, and space can be provided for the tolerance of the circuit board 21 to facilitate assembly.

[0087] In one embodiment, the support body 31 further includes a second support portion 312 in a stepped shape. In the thickness direction of the backlight module 100, the second support portion 312 is disposed on the first support portion 311. A third side wall S3 of the second support portion 312 is opposite to a fourth side wall S4 of the diffuser plate 4 and has a second interval g2, wherein the second interval g2 is greater than the first interval g1. In one embodiment, the second interval g2 may be at least twice the first interval g1, for example, 0.5 mm, but is not limited thereto. By providing the second interval g2, a heat expansion space may be provided for the diffuser plate 4.

[0088] In one embodiment, the frame 1 has a first side plate 12 connected to the bottom plate 11, and a third interval g3 is provided between a fifth side wall S5 of the first support portion 311 and the first side plate 12, and the fifth side wall S5 is opposite to the first side wall S1 (and the third side wall S3), wherein the third interval g3 is larger than the first interval g1. In one embodiment, the third interval g3 may be at least twice the first interval g1, for example, 0.5 mm, but is not limited thereto, and the third interval g3 may provide a heat expansion / assembly tolerance space for the support body 31. When the backlight module 100 is applied to the display device 1000, the third interval g3 may enable the top of the periphery of the frame 1 to be provided with an adhesive (or the adhesive is provided on the cover plate 6 to fit with the frame 1) to be closer to the inner side plate (i.e., the inner wall) of the frame 1, thereby reducing the peripheral thickness of the frame 1 at this point (i.e., Figure 4 The dimension in the first direction x) makes it more secure when adhering to, for example, the cover plate 6 and the adhesive will not overflow out of the cover plate 6. At the same time, the third interval g3 can be used as a accommodating space, which can also accommodate the overflow of the adhesive inside the frame 1, thereby improving the freedom of assembly of the adhesive.

[0089] See also Figure 4 , Figure 4 Illustrate the present invention Figure 2 A partial schematic diagram of the backlight module 100 in the embodiment. In one embodiment, the first supporting portion 311 further has a sixth side wall S6 and a first bearing surface B1 connected thereto, the diffusion plate 4 is carried on the first bearing surface B1, the sixth side wall S6 faces the plurality of light-emitting elements 22, and in the thickness direction of the backlight module 100, the sixth side wall S6 has a first dimension d1, and the spacer 32 has a second dimension d2, wherein 0.7<d2 / d1<0.9. The dimensional relationship between the first dimension d1 and the second dimension d2 enables the spacer 32 to provide sufficient wall / reflection function, and provides sufficient light mixing space for the light emitted from the spacer 32. In one embodiment, the first dimension d1 is 3.2 mm, and the second dimension d2 is 2.4 mm. At this time, d2 / d1=0.75, but this is not limited thereto.

[0090] Please refer to Figure 2 and Figure 4 In one embodiment, the backlight module 100 further includes a first elastic adhesive member 7. The second supporting portion 312 of the backlight module 100 has a third side wall S3 and a second bearing surface B2 connected thereto. The first elastic adhesive member 7 is disposed on the second bearing surface B2. In the first direction x, the first bearing surface B1 has a third dimension d3, and the second bearing surface B2 has a fourth dimension d4, wherein 0.4<d4 / d3<0.6. Due to the arrangement of the second interval g2 and the third interval g3, an assembly tolerance / expansion accommodation space is provided for the first elastic adhesive member 7 on the second bearing surface B2, thereby reducing the attachment accuracy requirement of the first elastic adhesive member 7. The second bearing surface B2 has a smaller dimension (for example, a molding dimension only greater than 0.8 mm is required), thereby reducing the frame dimension of the frame body 1. In one embodiment, the first elastic adhesive member 7 may also exceed the second bearing surface B2 and be partially accommodated in the third interval g3. In one embodiment, the third dimension d3 is 2 mm, and the fourth dimension d4 is 1 mm, but this is not limited thereto.

[0091] In one embodiment, the ratio of the first interval g1 to the third dimension d3 is 0.125<g1 / d3<0.3; or, the ratio of the third interval g3 to the fourth dimension d4 is 0.25<g3 / d4<0.6. By limiting the dimensional relationship between the first interval g1 and the third dimension d3 of the first bearing surface B1, and the third interval g3 and the fourth dimension d4 of the second bearing surface B2, while ensuring the assembly tolerance / expansion accommodation space and the supporting effect, the interval size is limited as much as possible to avoid adverse effects on the frame size of the support body 31 and the frame body 1, so as to reduce the frame size of the backlight module.

[0092] In one embodiment, the backlight module further includes an optical film set, the optical film set is located on the diffuser plate 4, the third side wall S3 of the second support portion 312 faces the diffuser plate 4, and in the thickness direction of the backlight module, the third side wall S3 has a fifth dimension d5, wherein the ratio between the fifth dimension d5 and the first dimension d1 is 0.55<d5 / d1<0.9. In one embodiment, the second bearing surface B2 of the second support portion 312 is substantially flush with the topmost optical film 5 in the optical film set.

[0093] See also Figure 5 , Figure 5 A cross-sectional schematic diagram of a backlight module 200 in another embodiment of the present invention is shown. In one embodiment, the support body 31 further has a third support portion 313, which is disposed on the fifth side wall S5, and the third support portion 313 is connected to the first side plate 12 of the frame body 1 by mortise and tenon joints. The third support portion 313 is connected to the first side plate 12 of the frame body 1 by mortise and tenon joints to facilitate positioning during assembly, while strengthening the stable connection between the support body 31 and the frame body 1, and maintaining the sizes of the first interval g1, the third interval g3, etc.

[0094] In one embodiment, the third supporting portion 313 protrudes from the fifth side wall S5, and the first side plate 12 is provided with a corresponding recess 121, and in the thickness direction of the backlight module 200 or in the first direction x, the size of the recess 121 does not exceed half of the size of the first side plate 12. By limiting the size relationship between the recess 121 and the first side plate 12, the strength of the side plate of the frame 1 is ensured while achieving the snap connection, so as to ensure the subsequent support of the display panel and other components and the structural stability.

[0095] In one embodiment, if Figure 3As shown, corresponding to each side of the diffuser plate 4, the support body 31 includes a first part 31a, a second part 31b, a third part 31c and a fourth part 31d, each of which includes a first support portion 311 and a second support portion 312, wherein the first support portion 311 of the first part 31a is adhesively fixed to the bottom plate 11, and there is no adhesive layer between the circuit board 21, the second part 31b, the third part 31c and the fourth part 31d and the bottom plate 11. In this embodiment, the side where the first side plate 12 is located is a fixed edge, and the other sides are free edges. Such a setting can not only ensure the basic positioning between the lamp cup structure 3 and the frame 1, but also facilitate the expansion of the diffuser plate 4 / optical film 5 without deformation or jumping off due to the complete fixation of the support body 31. In one embodiment, there is no adhesive layer between the circuit board 21 and the bottom plate 11, and the overall circuit board 21 and the lamp cup structure 3 are positioned / fixed only by the adhesive / mortise and tenon connection between the first support portion 311 on one side and the bottom plate 11, which is convenient for assembly and rework. It should be noted that the implementation method in this embodiment may include that the first part 31a of the support body 31 is provided with a third support part 313 and connected with the first side plate 12 of the frame body 1 by mortise and tenon joints, and at the same time, the first support part 311 of the first part 31a of the support body 31 is adhesively fixed to the bottom plate 11, and there is no adhesive layer between the circuit board 21, the second part 31b, the third part 31c and the fourth part 31d and the bottom plate 11. At this time, when assembling the lamp cup structure 3, the third support part 313 can be used to fix the first side plate 12 of the frame body 1. The support body 31 is in position, and then the adhesive layer is used to fix the bottom plate 11 of the frame 1; or, the support body 31 has no direct connection with the side plate of the frame 1, the first support portion 311 of the first part 31a of the support body 31 is adhesively fixed to the bottom plate 11, and there is no adhesive layer between the circuit board 21, the second part 31b, the third part 31c and the fourth part 31d and the bottom plate 11. At this time, when assembling the lamp cup structure 3, the support body 31 can be fixed to the bottom plate 11 of the frame 1 directly by the adhesive layer after alignment (for example, with the help of alignment marks).

[0096] See also Figure 2 and Figure 6 , Figure 6 A display device 2000 in an embodiment of the present invention is shown in FIG. The present invention further provides a display device 2000 , comprising the aforementioned backlight module 100 and a display panel, wherein the display panel is disposed on the backlight module 100 .

[0097] In one embodiment, the display device 2000 further includes a cover plate 6 and a second elastic adhesive member 8 (see Figure 2), the display panel (not shown) is fixedly arranged on the cover plate 6, the frame 1 has a third bearing surface B3 at the periphery corresponding to the cover plate 6, and the second elastic adhesive member 8 is arranged on the third bearing surface B3 and fixedly connected to the cover plate 6. In one embodiment, the second elastic adhesive member 8 may exceed the third bearing surface B3 and be partially accommodated in the third interval g3. In this embodiment, by arranging the second elastic adhesive member 8 on the third bearing surface B3, since the third interval g3 provides the assembly tolerance / expansion accommodation space of the second elastic adhesive member 8, the size of the side plate of the frame 1 is effectively controlled, thereby facilitating a narrow frame.

[0098] In one embodiment, the frame 1 includes a first side panel 12, a second side panel 13, a third side panel 14 and a fourth side panel 15 connected to the bottom panel 11, the display panel has a circuit binding area (not shown), the side where the circuit binding area is located corresponds to the first side panel 12, the support body 31 is connected to the first side panel 12 by mortise and tenon, and is not connected to the second side panel 13, the third side panel 14 and the fourth side panel 15. In this embodiment, the first side panel 12 corresponds to the side where the line binding area of ​​the display panel is located, and the frame width of this side is slightly larger than the frame width of other sides. In this way, the structural connection strength between the support body 31 and the frame body 1 can be met under the existing frame conditions of the frame body 1 without increasing the frame width. The other sides (corresponding to the second part 31b, the third part 31c and the fourth part 31d of the support body 31) only need to be provided with the first support part 311 and the second support part 312 without the need for mortise and tenon joints, and the frame size of the second part 31b, the third part 31c and the fourth part 31d of the support body 31 corresponding to the frame body 1 can also be effectively controlled; in addition, the mortise and tenon joint is conducive to positioning first, and after positioning, the first support part 311 here is adhered to the bottom plate 11 by the adhesive layer for further fixation, thereby facilitating assembly.

[0099] In one embodiment, the first elastic adhesive member 7 and the second elastic adhesive member 8 can be foam adhesive, PET adhesive, PVC adhesive, etc., but not limited thereto.

[0100] Compared with the prior art, the present invention discloses a backlight module and a display device, which reduces the spacing between the frame, the diffuser plate and the display panel by setting a diffuser plate on the first supporting portion of the lamp cup structure support body, thereby reducing the overall size of the frame, thereby providing a high screen-to-body ratio of the display device.

[0101] The above disclosed contents are only preferred feasible embodiments of the present invention, and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the specification and drawings of the present invention fall within the scope of the patent application of the present invention.

Claims

1. A backlight module, characterized in that: The backlight module comprises: A frame having a bottom plate; A light-emitting substrate, comprising a circuit board and a plurality of light-emitting elements arranged in an array on the circuit board, wherein the circuit board is arranged on the bottom plate; A lamp cup structure, wherein the lamp cup structure is arranged on the light-emitting substrate, and the lamp cup structure comprises: a spacer, fixedly disposed on the circuit board and forming a plurality of hollow portions to surround the corresponding light emitting elements, and A support body, located on the bottom plate, connected to the periphery of the spacer to surround the circuit board, and having a first support portion; and A diffusion plate is carried on the first supporting portion.

2. The backlight module according to claim 1, characterized in that: A first side wall of the first supporting portion is opposite to a second side wall of the circuit board and has a first gap g1 , and the first gap g1 corresponds to a size of the second side wall.

3. The backlight module according to claim 2, characterized in that: The support body also includes a second support portion and is stepped. In the thickness direction of the backlight module, the second support portion is arranged on the first support portion. A third side wall of the second support portion is opposite to a fourth side wall of the diffuser plate and has a second interval g2, wherein the second interval g2 is larger than the first interval g1.

4. The backlight module according to claim 2 or 3, characterized in that: The frame has a first side plate connected to the bottom plate, a third interval g3 is defined between a fifth side wall of the first support portion and the first side plate, the fifth side wall is opposite to the first side wall, and the third interval g3 is greater than the first interval g1.

5. The backlight module according to claim 2, characterized in that: The first supporting portion also has a sixth side wall and a first supporting surface connected to each other. The diffusion plate is supported on the first supporting surface. The sixth side wall faces the plurality of light-emitting elements. In the thickness direction of the backlight module, the sixth side wall has a first size d1, and the spacer has a second size d2, wherein 0.7<d2 / d1<0.

9.

6. The backlight module according to claim 4, characterized in that: The backlight module also includes a first elastic adhesive component. The second supporting portion of the backlight module has a third side wall and a second bearing surface connected to each other. The first elastic adhesive component is arranged on the second bearing surface. In the first direction, the first bearing surface has a third size d3, and the second bearing surface has a fourth size d4, wherein 0.4<d4 / d3<0.

6.

7. The backlight module according to claim 6, characterized in that: The ratio of the first interval g1 to the third dimension d3 is 0.125<g1 / d3<0.3; or, the ratio of the third interval g3 to the fourth dimension d4 is 0.25<g3 / d4<0.

6.

8. The backlight module according to claim 4, characterized in that: The support body further has a third support portion, which is disposed on the fifth side wall and is connected to the first side plate of the frame body by mortise and tenon joints.

9. The backlight module according to claim 8, characterized in that: The third supporting portion protrudes from the fifth side wall, and the first side plate is provided with a corresponding recessed portion. In the first direction, the size of the recessed portion does not exceed half of the size of the first side plate.

10. The backlight module according to claim 9, characterized in that: Corresponding to each side of the diffusion plate, the support body includes a first part, a second part, a third part and a fourth part, each part includes the first supporting portion and the second supporting portion, wherein the first supporting portion of the first part is adhesively fixed to the base plate, and there is no adhesive layer between the circuit board, the second part, the third part and the fourth part and the base plate.

11. A display device, characterized in that: It comprises the backlight module and the display panel as described in any one of claims 1 to 10, wherein the display panel is arranged on the backlight module.

12. The display device according to claim 11, characterized in that: The display device further includes a cover plate and a second elastic adhesive member, the display panel is fixedly disposed on the cover plate, the frame has a third bearing surface corresponding to the periphery of the cover plate, and the second elastic adhesive member is disposed on the third bearing surface and fixedly connected to the cover plate.

13. The display device according to claim 11, characterized in that The frame includes a first side panel, a second side panel, a third side panel and a fourth side panel connected to the bottom panel, the display panel has a circuit binding area, the side where the circuit binding area is located corresponds to the first side panel, the support body is connected to the first side panel by mortise and tenon joints, and is not connected to the second side panel, the third side panel and the fourth side panel.

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