Combined structure with snap design, backlight module and display device

Abstract

The present application discloses a combination structure with snap design, a backlight module and a display device. The combination structure is arranged between a first plate and a second plate to fix the clamping member by the first plate and the second plate. The combination structure comprises at least one fixing part and a groove. The at least one fixing part is protruded on the first plate and extends along the normal direction of the first plate. The groove is recessed on the second plate and has a bottom surface and at least one sidewall which is perpendicular to the bottom surface and arranged around the bottom surface. The at least one fixing part passes through at least one through hole on the clamping member, is arranged in the groove and is tightly engaged with the bottom surface and the at least one sidewall of the groove.

Description

[0001] This application claims priority to Chinese Patent Application No. 202510264692.9, filed on March 6, 2025, entitled "Combination Structure with Snap-fit ​​Design, Backlight Module and Display Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This case relates to a combination structure, particularly a combination structure with a snap-fit ​​design used in backlight modules and display devices. Background Technology

[0003] Backlight modules in existing display devices can be divided into direct-lit backlight modules and edge-lit backlight modules. Generally, direct-lit backlight modules have reflective sheets corresponding to the light-emitting elements on the circuit board to improve the brightness of the light source. Since the reflective sheets are usually made by injection molding, they are prone to warping. In order to maintain optical performance, it is necessary to ensure the fixation between the reflective sheets, the circuit board, and the backplate located below the circuit board during assembly.

[0004] Screw fastening combined with adhesive is a common method of fixing. However, this method requires a large number of components, is complex to assemble, and takes a long time. Furthermore, with the increasing density of light-emitting elements on the circuit board in backlight modules and the demand for thinner and lighter products, the space available for screw fastening of the reflector is decreasing, sometimes leaving only adhesive fastening. This not only weakens the fixation but also affects the optical performance of the light-emitting module, and increases the risk of defects such as abnormal surface finish and noise.

[0005] In addition, if the backplate is an aesthetically pleasing component, it requires a painted finish and cannot be secured with screws through holes; it can only be fixed with adhesive, which significantly reduces overall stability. Furthermore, the current backplate design uses die casting, which allows for complex structures, but die castings typically have draft angle limitations. Therefore, the design must consider demolding and draft angle issues, making it impossible to design an undercut structure for assembly and fixation, leading to difficulties in assembly design. Utility Model Content

[0006] The purpose of this case is to provide a combinatorial structure that can solve the above-mentioned problems.

[0007] Another objective of this invention is to provide a backlight module and a display device, wherein the backlight module achieves the effect of simplifying the assembly process and maintaining fixed stability by adopting a combination structure that occupies little space and is easy to assemble.

[0008] To achieve the aforementioned objective, this invention provides a combination structure with a snap-fit ​​design, disposed between a first plate and a second plate, so that a clamping member is fixedly assembled by the first and second plates. The combination structure includes at least one fixing portion and a groove. The at least one fixing portion protrudes from the first plate and extends along a direction parallel to the normal of the first plate. The groove is recessed into the second plate and has a bottom surface and at least one sidewall perpendicular to and surrounding the bottom surface. The at least one fixing portion passes through at least one through hole on the clamping member, correspondingly disposed within the groove, and tightly engages with the bottom surface and at least one sidewall of the groove.

[0009] In one embodiment, the depth of the groove is less than the thickness of the second plate.

[0010] In one embodiment, at least one fixing part is a C-shaped hook structure, and the C-shaped hook structure has a body and two arms, and an accommodating space is defined between the body and the two arms.

[0011] In one embodiment, the groove is a circular groove and has a protrusion. The protrusion extends from at least one side wall toward the center of the groove. When the C-shaped hook structure is correspondingly disposed in the circular groove, the two arms clamp the two sides of the protrusion and make the protrusion correspondingly disposed in the accommodating space.

[0012] In one embodiment, at least one fixing part is a plurality of C-shaped hook structures, each C-shaped hook structure having a body and two arms, and an accommodating space is defined between the body and the two arms.

[0013] In one embodiment, at least one fixing part is two C-shaped hook structures, which are arranged back to back.

[0014] In one embodiment, the groove is a circular groove and has two protrusions. The two protrusions are correspondingly arranged with two C-shaped hook structures, and the two protrusions extend from at least one side wall toward the center of the groove. When the two C-shaped hook structures are arranged in the circular groove, the two arms of each C-shaped hook structure clamp the two sides of the corresponding protrusion, and each protrusion is correspondingly arranged in each accommodating space.

[0015] In one embodiment, at least one fixing part has a groove at its bottom, and the groove is a square groove. The square groove has a bottom surface and a plurality of sidewalls arranged around the bottom surface. A rib is provided on the bottom surface, and the appearance of the rib corresponds to the groove. When at least one fixing part is correspondingly disposed in the square groove, the rib is correspondingly disposed in the groove and engages with each other.

[0016] In one embodiment, the combined structure further includes two buffer blocks. When at least one fixing part is correspondingly disposed in the square groove, the two buffer blocks are respectively disposed on both sides of the at least one fixing part, so as to jointly abut against the multiple side walls of the square groove with the at least one fixing part, so that the at least one fixing part is tightly fitted and fixed to the square groove.

[0017] In one embodiment, the coefficient of thermal expansion of the first plate is . 1. The coefficient of thermal expansion of the second plate is α2, the relationship between the thermal expansion coefficients of the first plate and the second plate is as follows: .

[0018] In one embodiment, at least one fixing part has an uneven surface in contact with any of the grooves, and the uneven surface is at least one of a concave-convex surface, a granular surface, or a rough surface.

[0019] In one embodiment, a connecting layer is further included, which is disposed between at least one fixing part and the groove, and the connecting layer is an adhesive layer or a welding layer.

[0020] To achieve the aforementioned objectives, this application also provides a backlight module, comprising: at least one assembly structure with an engaging design as described above, a first plate, a second plate, and a clamping member. The clamping member is a lamp board, having a plate body and at least one light-emitting element, wherein the at least one light-emitting element is disposed on one side of the plate body, at least one through-hole penetrates the plate body, and the number of at least one through-holes is greater than or equal to the number of at least one assembly structure.

[0021] In one embodiment, the first plate is a reflective sheet, and the second plate is a back plate, with at least one light-emitting element disposed on one side of the plate and facing the first plate.

[0022] In one embodiment, the first plate is a back plate, and the second plate is a reflective sheet, with at least one light-emitting element disposed on one side of the plate and facing the second plate.

[0023] To achieve the aforementioned objectives, this application further provides a display device, including a backlight module and a display panel as described above. The display panel is disposed relative to the backlight module. Attached Figure Description

[0024] The following detailed description of the case and the schematic diagrams of the embodiments are intended to enable those skilled in the art to fully understand the above content, and are not intended to limit the case.

[0025] Figure 1 This is an exploded structural diagram of the first preferred embodiment of the combined structure with the snap-fit ​​design in this case.

[0026] Figure 2 for Figure 1 The diagram shows a partial exploded structure of the combined structure.

[0027] Figure 3 for Figure 2 The assembled structure is shown in the top view.

[0028] Figure 4 for Figure 2The diagram shows the first and second plates, and is a schematic representation of the combined structure viewed from another angle.

[0029] Figure 5 This is a partial exploded structural diagram of a second preferred embodiment of the combined structure with a snap-fit ​​design in this case.

[0030] Figure 6 for Figure 5 The diagram shows the first and second plates, and is a schematic representation of the combined structure viewed from another angle.

[0031] Figure 7 for Figure 5 A partial cross-sectional structural diagram of the combined structure shown.

[0032] Figure 8 This is a structural diagram of the third preferred embodiment of the combination structure with a snap-fit ​​design in this case.

[0033] Figure 9 This is a partial exploded structural diagram of the fourth preferred embodiment of the combined structure with the interlocking design in this case.

[0034] Figure 10 for Figure 9 The diagram shows the first and second plates, and is a schematic representation of the combined structure viewed from another angle.

[0035] Figure 11 for Figure 9 A schematic diagram of the second plate shown.

[0036] Figure 12 This is a partial cross-sectional structural diagram of the display device according to the fourth preferred embodiment of this case. Detailed Implementation

[0037] Some typical embodiments embodying the features and advantages of this invention will be described in detail in the following description. It should be understood that this invention can have various variations in different forms, all of which do not depart from the scope of this invention, and the descriptions and drawings herein are for illustrative purposes only and not for limiting the invention. For example, if the following description of placing a first feature on or above a second feature indicates that it includes embodiments where the first and second features are in direct contact, and also includes embodiments where additional features can be placed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, different embodiments in this disclosure may use repeated reference numerals and / or markings. These repetitions are for simplification and clarity and are not intended to limit the relationships between the various embodiments and / or the described appearance structures. Moreover, to facilitate the description of the relationship between one component or feature and another (plural) component or feature in the appendix, spatially related terms such as "inner," "outer," and similar terms may be used. In addition to the orientations illustrated in the accompanying drawings, spatially related terms are used to cover different orientations of the device in use or operation. Furthermore, when a component is referred to as "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or there may be intervening components. Although the numerical ranges and parameters of the broad scope of this disclosure are approximate, values ​​are stated as precisely as possible in specific examples. Additionally, it is understood that while terms such as "first," "second," etc., may be used in the claims to describe different components, these components should not be limited by these terms, and the components described accordingly in the embodiments are represented by different component symbols. These terms are used to distinguish different components. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component without departing from the scope of the embodiments. The term "and / or" as thus used includes any or all combinations of one or more of the associated listed items.

[0038] Please refer to Figure 1 . Figure 1 This is an exploded structural diagram of a first preferred embodiment of the combination structure with a snap-fit ​​design in this case. This case discloses a combination structure 2 disposed between a first plate 10 and a second plate 11, so that the clamping member 12 is fixedly assembled by the first plate 10 and the second plate 11. The combination structure 2 includes: at least one fixing part 20 and a groove 21. The at least one fixing part 20 protrudes from the first plate 10 and is disposed along a direction parallel to the normal direction of the first plate 10 (e.g., ...). Figure 1Arrow A) extends as shown. The groove 21 is recessed in the second plate 11, and has a bottom surface 210 and at least one side wall 211 that is perpendicular to and surrounds the bottom surface 210. At least one fixing part 20 passes through at least one through hole 121 on the clamping member 12, is correspondingly disposed in the groove 21, and is tightly engaged with the bottom surface 210 and at least one side wall 211 of the groove 21, thereby achieving the purpose of easy assembly and stable fixing of the first plate 10, the clamping member 12 and the second plate 11.

[0039] Please continue reading. Figure 1 As shown in the figure, this embodiment is mainly assembled from a first plate 10, a second plate 11, a clamping member 12, and a combination structure 2. The clamping member 12 is clamped between the first plate 10 and the second plate 11 through the mutual engagement of the combination structure 2. Taking this embodiment as an example, the combination structure 2 can be applied to various scenarios where plates are combined, and is not limited to backlight modules, as will be stated in the preceding text. When applied to the technical field of backlight module 1, the first plate 10 can be, but is not limited to, a reflective sheet of backlight module 1. The second plate 11 can be, but is not limited to, a back plate of backlight module 1. The clamping member 12 can be, but is not limited to, a lamp plate of backlight module 1, and has a plate body 120, at least one through hole 121, and at least one light-emitting element 122. The at least one through hole 121 is a circular through hole that penetrates the plate body 120, and the at least one light-emitting element 122 is disposed on one side of the plate body 120. In this embodiment, at least one light-emitting element 122 is disposed on the side facing the first plate 10, and the position of each light-emitting element 122 corresponds to the hole 101 of the first plate 10. In some embodiments, the light-emitting element 122 may be, but is not limited to, an LED unit. Figure 1 In the illustrated example, the clamping member 12 has three through holes 121 and twelve light-emitting elements 122, wherein the number and position of the through holes 121 correspond to the fixing portion 20 on the first plate 10 and the groove 21 on the second plate 11. In other words, in this embodiment, the backlight module 1 has three sets of combined structures 2, which can pass through the three through holes 121 of the clamping member 12 for component fixation. However, in other embodiments, the number of at least one through hole 121 may be greater than the number of at least one combined structure 2, and is not limited thereto. In this way, the combined structure 2 can be inserted into different positions as needed to provide installation flexibility. Furthermore, the positions of the 12 light-emitting elements 122 of the clamping member 12 also correspond to the 12 holes 101 on the first plate 10. That is, the number and position of the light-emitting elements 122 correspond to the holes 101 of the first plate 10. Therefore, when the first plate 10 and the clamping member 12 are connected, not only can the fixing part 20 of the first plate 10 pass through the through hole 121 of the clamping member 12, but also the light-emitting elements 122 of the clamping member 12 can pass through the holes 101 of the first plate 10. And, as... Figure 1As shown, each perforation 121 is surrounded by four light-emitting elements 122. However, the number and position of the holes 101 and fixing parts 20 of the first plate 10, as well as the light-emitting elements 122 and perforations 121 of the clamping member 12, are not limited to this; they are only for illustrative purposes. Furthermore, in Figure 2 , Figure 3 In the accompanying drawings, for ease of explanation, partial views will be shown. For example, as shown in the attached drawings... Figure 3 As shown, the illustration is based on one perforation 121 of the clamping member 12 and four light-emitting elements 122 arranged around it as a unit. However, such illustrations do not limit the number and position of the perforation 121 and the light-emitting elements 122. Their number and position can be varied according to the actual implementation situation and are not limited thereto.

[0040] Please also refer to Figure 1 , Figure 2 and Figure 3 . Figure 2 for Figure 1 The diagram shows a partial exploded structure of the combined structure. Figure 3 for Figure 2 The assembled structure is shown in the top view. Please refer to [link / reference]. Figure 1 , Figure 2 In this embodiment, the first plate 10 has an upper surface 102 and a lower surface 103, and the fixing part 20 of the assembly structure 2 is disposed on the lower surface 103. Figure 2 and Figure 3 As shown, the upper surface 102 of the first plate 10 has a plurality of reflective cups 100 arranged in a matrix. Each reflective cup 100 has a recessed trapezoidal structure, but is not limited to this. Each reflective cup 100 has a hole 101 at its bottom for the light-emitting element 122 to pass through. When the light-emitting element 122 emits light, the light is reflected upwards through the reflective cups 100. When applied in the technical field of backlight module 1 and assembled, as shown... Figure 1 and Figure 2 As shown, the fixing part 20, located on the lower surface 103 of the first plate 10, passes through the through hole 121 on the clamping member 12 in the direction indicated by arrow B. At this time, at least one light-emitting element 122 on the clamping member 12 also passes upward through the hole 101 of the first plate 10. Then, the fixing part 20 is positioned downward in the groove 21 of the second plate 11 and is tightly engaged with the bottom surface 210 and at least one side wall 211 of the groove 21. In this way, the clamping member 12 can be held in place by the tight engagement between the fixing part 20 of the combined structure 2 and the groove 21. Figure 3 As shown, it is tightly sandwiched between the first plate 10 and the second plate 11.

[0041] Please see Figure 4 . Figure 4 for Figure 2 The diagram shows the combined structure of the first and second plates, viewed from another angle. Figure 4 In the illustration shown, the clamping member 12 is only shown briefly in this figure to facilitate the explanation of the detailed structure and corresponding placement of the assembly structure 2. In this embodiment, the assembly structure 2 includes a fixing part 20 and a groove 21. The fixing part 20 protrudes from the lower surface 103 of the first plate 10 and is positioned along a direction parallel to the normal direction of the first plate 10 (e.g., ...). Figure 4 As shown by arrow A), the groove 21 is recessed into the second plate 11. In this embodiment, the depth of the groove 21 is less than the thickness of the second plate 11. In other words, the groove 21 does not penetrate the second plate 11, thus maintaining the surface flatness of the second plate 11 to achieve the effect of a beautiful back design. As shown in the figure, the fixing part 20 in this embodiment can be, but is not limited to, a C-shaped hook structure. This C-shaped hook structure has a body 200 and two arms 201. The two arms 201 are respectively connected to the two ends of the body 200, and an accommodating space 202 is defined between the body 200 and the two arms 201. The groove 21 of the second plate 11 is a circular groove, and has a protrusion 212, a circular bottom surface 210, and a side wall 211 that is perpendicular to and surrounds the bottom surface 210. As shown in the figure, the protrusion 212 protrudes from the sidewall 211 and extends horizontally toward the center of the groove 21. Therefore, it does not protrude upwards from the upper surface 110 of the second plate 11. In this embodiment, the protrusion 212 can be, but is not limited to, a semi-circular or semi-elliptical protruding pillar structure. Please also refer to... Figure 1 and Figure 4 When the combined structure 2 is connected, it means that the first plate 10 is along... Figure 1As shown by arrow B, the clamping member 12 and the second plate 11 are stacked sequentially. Therefore, the fixing part 20 provided on the lower surface 103 of the first plate 10 first passes through the through hole 121 on the clamping member 12, and then is correspondingly disposed in the groove 21 of the second plate 11. At this time, the C-shaped hook structure of the fixing part 20 is accommodated in the circular groove 21, and the two arms 201 of the C-shaped hook structure correspondingly clamp the two sides of the semi-circular protrusion 212, so that the protrusion 212 is correspondingly clamped in the accommodating space 202 of the C-shaped hook structure, thereby achieving the clamping and fixing between the C-shaped hook structure of the fixing part 20 and the protrusion 212 of the circular groove 21. The first plate 10 is a plastic injection-molded reflective sheet. The C-shaped hook structure of its fixing part 20 deforms outwards due to the insertion of the protrusion 212 from the center and the elastic properties of the plastic. It is then covered by the groove 21, creating structural interference on the outside of the fixing part 20, thereby producing a clamping effect and fixing the two objects together. In some embodiments, the fixing part 20 and the first plate 10 may be, but are not limited to, an integrally molded structure. Furthermore, in other embodiments, the coefficient of thermal expansion of the first plate 10 is α1, and the coefficient of thermal expansion of the second plate 11 is α2, and the relationship between the coefficients of thermal expansion of the first plate 10 and the second plate 11 is as follows: This means that the coefficient of thermal expansion of the first plate 10 is equal to that of the second plate 11. Two to three times larger. For example, the first plate 10 is made of plastic resin, and the second plate 11 is made of metal. When the product is an automotive product, it needs to undergo stringent environmental testing requirements, such as simulated high temperature and high humidity conditions. At this time, during the thermal expansion process, the C-shaped hook structure of the fixing part 20 of the first plate 10 can expand outward due to the volume expansion generated during the thermal expansion of the material. This makes the two arms 201 not only more firmly clamp the protrusion 212 in the groove 21 laterally, but also tightly fit and abut against its adjacent side wall 211, so that the fixing part 20 and the circular groove 21 are more tightly fitted and fixed.

[0042] Please see Figure 5 and Figure 6 . Figure 5 This is a partial exploded structural diagram of a second preferred embodiment of the combined structure with a snap-fit ​​design in this case. Figure 6 for Figure 5 The diagram shows the first and second plates of the combined structure, viewed from another angle. Figure 5As shown, the assembly structure 4 of the second preferred embodiment of this case is also disposed between the first plate 30 and the second plate 31, so that the clamping member 32 is fixedly assembled by the first plate 30 and the second plate 31. The assembly structure 4 can be applied to various scenarios where plates are combined with each other, and is not limited to backlight modules, as will be explained later. In this embodiment, when applied to the technical field of backlight module 3, the first plate 30 may be, but is not limited to, a reflective sheet of backlight module 3, and has an upper surface 302 and a lower surface 303. The second plate 31 may be, but is not limited to, a back plate of backlight module 3. The clamping member 32 can be, but is not limited to, the lamp board of the backlight module 3, and has a plate body 320, a through hole 321, and a light-emitting element 322. The through hole 321 penetrates the plate body 320, and the light-emitting element 322 is disposed on one side of the plate body 320. In this embodiment, the light-emitting element 322 is also disposed on the side facing the first plate 30, and the position of each light-emitting element 322 corresponds to the hole 301 of the first plate 30. Figure 5 As shown, the upper surface 302 of the first plate 30 also has a plurality of matrix-arranged reflective cups 300, and the bottom of each reflective cup 300 is provided with a hole 301 for the light-emitting element 322 to pass through. Therefore, in this embodiment, the configuration and corresponding positions of the first plate 30, the second plate 31, and the clamping member 32 are similar to those in the previous embodiment, except that the implementation of its combined structure 4 differs from the previous embodiment. Please refer to... Figure 6 The combined structure 4 in this embodiment is also composed of at least one fixing part 40, 41 and a groove 42, and the at least one fixing part 40, 41 can be, but is not limited to, multiple C-shaped hook structures. For example, in this embodiment, the at least one fixing part 40, 41 is two C-shaped hook structures, that is, each set of combined structures 4 includes two fixing parts 40, 41 and a groove 42, and the two fixing parts 40, 41 are both protruding from the lower surface 303 of the first plate 30, and along the direction parallel to the normal of the first plate 30 (e.g., Figure 6Arrow C) extends as shown. The groove 42 is recessed into the second plate 31 and also has a bottom surface 420 and at least one sidewall 421 perpendicular to and surrounding the bottom surface 420. In this embodiment, each C-shaped hook structure of the fixing parts 40, 41 has a body 400, 410 and two arms 401, 411. The two arms 401, 411 are respectively connected to both ends of their respective bodies 400, 410, and accommodating spaces 402, 412 are defined between the bodies 400, 410 and the two arms 401, 411. In this embodiment, the two C-shaped hook structures of the two fixing parts 40, 41 are arranged back-to-back, that is, the two arms 401 of the fixing part 40 and the two arms 411 of the fixing part 41 extend towards opposite sides, so the defined C-shaped hook structures are also arranged in opposite directions. Furthermore, the proportions (e.g., width and depth) of the C-shaped hook structure must take into account material strength to avoid breakage due to excessive narrowness. The groove 42 of the second plate 31 is also a circular groove, but this is not a limitation. However, in this embodiment, as... Figure 6 As shown, the groove 42 has two protrusions 422 and 423, a circular bottom surface 420, and a sidewall 421 perpendicular to and surrounding the bottom surface 420. The two protrusions 422 and 423 both protrude from the sidewall 421 and are symmetrically arranged, extending horizontally towards the center of the groove 42, thus not protruding from the upper surface 310 of the second plate 31. Furthermore, the two protrusions 422 and 423 can be, but are not limited to, semi-circular or semi-elliptical columnar structures.

[0043] Please also refer to Figure 5 , Figure 6 and Figure 7 . Figure 7 for Figure 5 The diagram shows a partial cross-sectional view of the combined structure. In this embodiment, when the combined structure 4 is assembled, that is, the first plate 30, the clamping member 32, and the second plate 31 are stacked sequentially, the two fixing parts 40 and 41 on the lower surface 303 of the first plate 30 first pass through the through hole 321 on the clamping member 32 and are set downwards into the groove 42. At this time, the two C-shaped hook structures of the fixing parts 40 and 41 are correspondingly set in the circular groove 42, and the two arms 401 and 411 of the C-shaped hook structures of the fixing parts 40 and 41 respectively clamp the two sides of their corresponding protrusions 422 and 423. At this time, as Figure 7As can be seen in the cross-sectional view, the outer sides of the two arms 401 and 411 abut against the sidewall 421 of the groove 42, while the inner sides tightly fasten the protrusions 422 and 423 of the groove 42, thereby clamping the protrusions 422 and 423 within the receiving spaces 402 and 412 of the two C-shaped hook structures, and tightly engaging them. Simultaneously, the bodies 400 and 410 of the fixing parts 40 and 41, and the bottoms of the two arms 401 and 411, also abut against the bottom surface 420 of the groove 42. Similar to the aforementioned embodiment, the fixing parts 40 and 41 can be, but are not limited to, structures integrally formed with the first plate 10. If the coefficient of thermal expansion of the first plate 30 is α1 and the coefficient of thermal expansion of the second plate 31 is α2, then the relationship between the coefficients of thermal expansion of the first plate 30 and the second plate 31 is as follows: This means that the coefficient of thermal expansion of the first plate 30 is equal to that of the second plate 31. The friction force is 2 to 3 times that of the second plate 31's circular groove 42, which is achieved by the outward expansion of the two C-shaped hook structures of the fixing parts 40 and 41 during the thermal expansion process. This allows for a tighter fit and fixation with the second plate 31's circular groove 42. Furthermore, in this embodiment, any contact surface between the two fixing parts 40 and 41 and the groove 42 can be, but is not limited to, an uneven surface, such as at least one of the following: a rough surface, a granular surface, or a rough surface. This increases the friction force between the contact surfaces of the two fixing parts 40 and 41 and the groove 42, resulting in a more secure and tighter fit. Alternatively, a connecting layer (not shown), such as an adhesive layer or a welding layer, can be provided between the two fixing parts 40, 41 and the groove 42, but this is not a limitation. Through such adhesive bonding or welding, a tighter connection can be made between the two fixing parts 40, 41 and the bottom surface 420 of the groove 42, allowing the first plate 30, the clamping member 32, and the second plate 31 to... Figure 7 This results in a tight and stable stacking. In addition, by Figure 7 As can be seen, the second plate 31 has a thickness D1, and the groove 42 of the combined structure 4 has a depth D2, and the depth D2 of the groove 42 is less than the thickness D1 of the second plate 31. In other words, the groove 42 does not penetrate to the lower surface 311 of the second plate 31, so it can maintain the flatness of the lower surface 311 of the second plate 31 to achieve the effect of the back design.

[0044] Please see Figure 8 . Figure 8This is a schematic diagram of the third preferred embodiment of the combination structure with a snap-fit ​​design in this case. In this embodiment, the clamping member 52 can be tightly clamped and fixed between the first plate 50 and the second plate 51 by the combination structure 6 disposed between the first plate 50 and the second plate 51. In this embodiment, the combination structure 6 also has at least one fixing part 60 and a groove 61, and at least one fixing part 60 protrudes from the first plate 50, and the groove 61 is recessed into the second plate 51. The structure, quantity, and appearance of the at least one fixing part 60 and the groove 61 of the combination structure 6 in this embodiment are the same as those in the previous embodiments, and will not be described again. The combination structure 6 can be applied to various scenarios where plates are combined with each other, and is not limited to backlight modules, as will be stated in the preceding description. However, in this embodiment, when applied to the technical field of backlight module 5, the first plate 50 is the back plate of backlight module 5, the second plate 51 is the reflector of backlight module 5, and the clamping member 52 is the lamp plate of backlight module 5, and has a plate body 520, at least one through hole 521 and at least one light-emitting element 522, wherein at least one light-emitting element 522 is disposed on one side of plate body 520 and faces the second plate 51, that is, each light-emitting element 522 corresponds to the hole 511 of the second plate 51. In other words, in this embodiment, the configuration of the fixing part 60 and the groove 61 is the opposite of that in the previous embodiment. That is, the fixing part 60 may be integrally formed on the back plate, while the groove 61 is correspondingly disposed under the reflective sheet. However, even if configured in this way, the first plate 50, the clamping member 52 and the second plate 51 can still be tightly and stably stacked by the tight fit design between the fixing part 60 and the groove 61, and the different thermal expansion coefficients between the first plate 50 and the second plate 51, while also taking into account the effect of the back design. In this embodiment, at least one fixing part 60 is a two C-shaped hook structure, meaning that each group of combined structures 6 includes two fixing parts 60a and 60b and a groove 61. That is, a single groove 61 can accommodate two fixing parts 60a and 60b, thereby reducing the number of grooves. In this embodiment, the second plate 51 is a reflective sheet of the backlight module 5, which is injection molded from plastic and has low structural strength. Reducing the number of grooves can avoid affecting the structural strength of the second plate 51, but it is not limited thereto. If the second plate 11 is like Figure 1 The backplate shown is the backplate of the backlight module 1. It is made of metal and has a very stable structural strength. It can also be designed so that the number of grooves is the same as the number of fixing parts.

[0045] Please also refer to Figure 9 , Figure 10 and Figure 11 . Figure 9 This is a partial exploded structural diagram of the fourth preferred embodiment of the combined structure with the interlocking design in this case. Figure 10 for Figure 9The diagram shows the first and second plates of the combined structure, viewed from another angle. Figure 11 for Figure 9 A schematic diagram of the second plate component of the combined structure shown. Figure 9 and Figure 10 As shown, the assembly structure 8 in this embodiment is also disposed between the first plate 70 and the second plate 71, so that the clamping member 72 is fixedly assembled by the first plate 70 and the second plate 71. The assembly structure 8 can be applied to various scenarios where plates are combined with each other, and is not limited to backlight modules, as will be explained below. In this embodiment, when applied to the technical field of backlight module 7, the first plate 70 can also be, but is not limited to, a reflective sheet of backlight module 7, and has an upper surface 702 and a lower surface 703. The second plate 71 can be, but is not limited to, a back plate of backlight module 7. The clamping member 72 can be, but is not limited to, a lamp plate of backlight module 7, and has a plate body 720, at least one through hole 721 and at least one light-emitting element 722. Taking this embodiment as an example, the number of light-emitting elements 722 is 4, and the number of at least one through hole 721 is 1, that is, 4 light-emitting elements 722 are disposed around the through hole 721. Furthermore, unlike the aforementioned embodiments, the perforation 721 in this embodiment is a square perforation that penetrates the plate 720. Four light-emitting elements 722 are disposed on one side of the plate 720, and in this embodiment, the light-emitting elements 722 are also disposed on the side facing the first plate 70, and the position of each light-emitting element 722 corresponds to the hole 701 in the first plate 70. For example... Figure 9 As shown, the upper surface 702 of the first plate 70 also has a plurality of reflective cups 700 arranged in a matrix. In this embodiment, the number of reflective cups 700 is 4, but it is not limited to this. Each reflective cup 700 has a hole 701 at its bottom for the light-emitting element 722 to pass through. It can be seen that in this embodiment, the configuration and corresponding positions of the first plate 70, the second plate 71 and the clamping member 72 are similar to those in the previous embodiment, but the implementation of the backlight module 7 assembly structure 8 and the appearance of the through hole 721 of the clamping member 72 are different from those in the previous embodiment.

[0046] Please continue reading. Figure 10 and Figure 11 . Figure 11 for Figure 9 A schematic diagram of the second plate shown. (As shown) Figure 10 As shown, the combined structure 8 of this embodiment also has a fixing part 80 and a groove 81, and the fixing part 80 protrudes from the lower surface 703 of the first plate 70 and is arranged along a direction parallel to the normal of the first plate 70 (e.g., Figure 10As shown by arrow E), the groove 81 is recessed into the second plate 71. In addition, the combined structure 8 of this embodiment further includes two buffer blocks 82. The buffer block 82 can be, but is not limited to, a slightly elastic cuboid structure. As shown, the fixing part 80 is generally a cubic structure protruding from the first plate 70, and has a groove 800 at its bottom 801. In this embodiment, the groove 800 is a V-shaped groove, but is not limited thereto. The groove 81 on the second plate 71 is a square groove, and also has a bottom surface 810 and side walls 811 perpendicular to and surrounding the bottom surface 810. Since the groove 81 is a square groove, its bottom surface 810 is also square, and the number of side walls 811 surrounding the square bottom surface 810 is also four, but their number and shape can be varied according to the actual implementation situation, and are not limited thereto. Please also refer to... Figure 10 and Figure 11 As shown in the figure, a rib 812 is further provided on the bottom surface 810 of the groove 81, and the appearance of the rib 812 corresponds to the appearance of the groove 800 of the fixing part 80. Therefore, in this embodiment, when the groove 800 is a V-shaped groove, the rib 812 is a corresponding triangular rib. Thus, when the fixing part 80 is correspondingly disposed in the groove 81, the rib 812 is also correspondingly disposed in the groove 800, so that the triangular rib is tightly fitted in the V-shaped groove for mutual engagement. Furthermore, as... Figure 11 As shown, when the buffer block 82 is correspondingly disposed in the groove 81 of the second plate 71, it can be correspondingly disposed in the groove 81 and disposed on both sides of the protruding rib 812, and has a gap with the protruding rib 812. In other words, in this embodiment, the length L2 of the buffer block 82 is equal to or slightly less than the length L1 of the groove 81, so that the buffer block 82 can be accommodated in the groove 81.

[0047] Please see Figure 12 . Figure 12 This is a partial cross-sectional structural diagram of the display device according to the fourth preferred embodiment of this case. As shown in the figure, the display device 9 of this embodiment includes the aforementioned backlight module 7 and display panel 90, and the display panel 90 is disposed on the backlight module 7. In this embodiment, when the assembly structure 8 is assembled, that is, the first plate 70, the clamping member 72, and the second plate 71 are stacked sequentially, the fixing part 80 disposed on the first plate 70 first passes through the square through hole 721 on the clamping member 72 and is disposed downward in the groove 81 of the second plate 71. At this time, the protruding rib 812 disposed on the bottom surface 810 of the groove 81 is engaged in the groove 800 of the bottom 801 of the fixing part 80, and two buffer blocks 82 are respectively disposed on both sides of the fixing part 80. Furthermore, as Figure 11 and Figure 12As can be seen from the cross-sectional view, the three sides of the two buffer blocks 82 abut against the sidewall 811 of the groove 81, while the inner side abuts against the fixing part 80. Therefore, through the abutment and tight fit of the two buffer blocks 82, the fixing part 80 can be more firmly and tightly fixed in the groove 81. At the same time, the bottom 801 of the fixing part 80 and the bottom of the two buffer blocks 82 also abut against the bottom surface 810 of the groove 81. In this embodiment, as in the previous embodiment, the coefficient of thermal expansion of the first plate 70 is greater than that of the second plate 71. Therefore, during the process of thermal expansion, the fixing part 80 of the first plate 70 can be more tightly fitted and fixed with the two buffer blocks 82 and the groove 81 of the second plate 71 by the force of its volume expansion. And similar to the previous embodiments, any contact surface between the fixing part 80, the buffer block 82 and the groove 81 in this embodiment can be, but is not limited to, an uneven surface, such as at least one of the following: a concave-convex surface, a granular surface, a rough surface, etc., and is not limited thereto. This increases the friction between the contact surfaces of the fixing part 80, the buffer block 82, and the groove 81, making them more securely fitted and fixed. Alternatively, a connecting layer (not shown), such as an adhesive layer or a welding layer, can be provided between the fixing part 80, the buffer block 82, and the groove 81, but is not limited thereto. Through such adhesive bonding or welding connection, a tighter fit can be made between the fixing part 80, the buffer block 82, and the groove 81, allowing the first plate 70, the clamping member 72, and the second plate 71 to fit together as described above. Figure 12 This results in a tight and stable stacking. In addition, by Figure 12 As can be seen, the depth D4 of the groove 81 is less than the thickness D3 of the second plate 71, that is, the groove 81 will not penetrate to the lower surface 711 of the second plate 71. Therefore, the display device 9 of this embodiment can maintain the flatness of the lower surface 711 of the second plate 71 of the backlight module 7 to achieve the effect of beautiful back design.

[0048] In summary, this invention provides a modular structure with a snap-fit ​​design, a backlight module, and a display device. Through a combination of fixing parts and grooves on two different plates of the backlight module, the back plate, circuit board, and reflector in the backlight module are maintained in a close-packed state by a through-hole and structurally tight-fitting fixing method. Compared to conventional screw fastening methods, the modular structure of this invention occupies significantly less space and is easier and faster to assemble, making it more suitable for applications in narrower intervals due to an increase in the number of light-emitting components. Furthermore, the modular structure of this invention incorporates a lateral clamping or abutting tight-fitting design between the fixing parts and grooves, thus increasing the fixing strength. Moreover, regardless of whether the fixing parts or grooves of the modular structure are placed on the back plate, no holes are created on the back plate, better meeting the aesthetic design requirements of the product's back panel.

[0049] It should be noted that the above are merely preferred embodiments for illustrative purposes, and the scope of this application is not limited to the described embodiments. The scope of this application is determined by the appended claims. Furthermore, this application may be modified in various ways by those skilled in the art, but all such modifications shall not depart from the protection scope of the appended claims.

[0050] [List of Labels in the Attached Image] 1, 3, 5, 7: Backlight Module 10, 30, 50, 70: First plate 100, 300, 700: Reflector Cup 101, 301, 511, 701: Holes 102, 302, 702: The upper surface of the first plate. 103, 303, 703: Lower surface of the first plate 11, 31, 51, 71: Second plate 110, 310: Upper surface of the second plate 311: Lower surface of the second plate 12, 32, 52, 72: Clamping components 120, 320, 520, 720: plate body 121, 321, 521, 721: Perforation 122, 322, 522, 722: Light-emitting components 2, 4, 6, 8: Combined structure 20, 40, 41, 60, 80: Fixed parts 200, 400, 410: Ontology 201, 401, 411: Two arms 202, 402, 412: Accommodation space 21, 42, 61, 81: Grooves 210, 420, 810: bottom surface 211, 421, 811: Sidewall 212, 422, 423: bumps 800: Trench 801: Bottom 812: Convex Rib 82: Buffer block 9: Display device 90: Display panel A, C, E: Normal direction of the first plate B: Assembly direction of the backlight module D1, D3: Thickness of the second plate D2, D4: Depth of the groove L1: Length of the groove L2: Length of the buffer block.

Claims

1. A combination structure with a snap-fit ​​design, disposed between a first plate and a second plate, so that a clamping member is fixedly assembled by the first plate and the second plate, characterized in that, The combined structure includes: At least one fixing part protrudes from the first plate and extends along a direction parallel to the normal of the first plate; and A groove is recessed in the second plate and has a bottom surface and at least one side wall that is perpendicular to the bottom surface and surrounds the bottom surface; The at least one fixing part passes through at least one through hole on the clamping member, is correspondingly disposed in the groove, and is tightly engaged with the bottom surface and at least one side wall of the groove.

2. The combination structure with a snap-fit ​​design according to claim 1, characterized in that, The depth of the groove is less than the thickness of the second plate.

3. The combination structure with a snap-fit ​​design according to claim 1, characterized in that, The at least one fixing part is a C-shaped hook structure, and the C-shaped hook structure has a body and two arms, and an accommodating space is defined between the body and the two arms.

4. The combination structure with a snap-fit ​​design according to claim 3, characterized in that, The groove is a circular groove and has a protrusion. The protrusion extends from at least one side wall toward the center of the groove. When the C-shaped hook structure is correspondingly disposed in the circular groove, the two arms clamp the two sides of the protrusion and make the protrusion correspondingly disposed in the accommodating space.

5. The combination structure with a snap-fit ​​design according to claim 1, characterized in that, The at least one fixing part is a plurality of C-shaped hook structures, each of the C-shaped hook structures having a body and two arms, and an accommodating space is defined between the body and the two arms.

6. The combination structure with a snap-fit ​​design according to claim 5, characterized in that, The at least one fixing part is two C-shaped hook structures, which are arranged back to back.

7. The combination structure with a snap-fit ​​design according to claim 6, characterized in that, The groove is a circular groove with two protrusions. The two protrusions are correspondingly arranged with the two C-shaped hook structures. The two protrusions extend from the at least one side wall toward the center of the groove. When the two C-shaped hook structures are arranged in the circular groove, the two arms of each C-shaped hook structure clamp the two sides of the corresponding protrusion, and each protrusion is correspondingly arranged in each accommodating space.

8. The combination structure with a snap-fit ​​design according to claim 1, characterized in that, The bottom of the at least one fixing part has a groove, and the groove is a square groove. The square groove has a bottom surface and a plurality of side walls arranged around the bottom surface. A rib is provided on the bottom surface, and the appearance of the rib corresponds to the groove. When the at least one fixing part is correspondingly disposed in the square groove, the rib is correspondingly disposed in the groove and engages with each other.

9. The combination structure with a snap-fit ​​design according to claim 8, characterized in that, The combined structure further comprises two buffer blocks. When the at least one fixing part is correspondingly disposed in the square groove, the two buffer blocks are respectively disposed on both sides of the at least one fixing part, so as to jointly abut against the plurality of side walls of the square groove with the at least one fixing part, so that the at least one fixing part is tightly fitted and fixed to the square groove.

10. The combination structure with an engaging design according to claim 1, characterized in that, The coefficient of thermal expansion of the first plate is α1, and the coefficient of thermal expansion of the second plate is α2. The relationship between the coefficients of thermal expansion of the first plate and the coefficients of thermal expansion of the second plate is as follows: .

11. The combination structure with a snap-fit ​​design according to claim 1, characterized in that, The contact surface between the at least one fixing part and any of the contact surfaces of the groove is an uneven surface, and the uneven surface is at least one of a concave-convex surface, a granular surface, or a rough surface.

12. The combined structure according to claim 1, characterized in that, It further includes a connecting layer disposed between the at least one fixing part and the groove, and the connecting layer is an adhesive layer or a welding layer.

13. A backlight module, characterized in that, include: At least one combination structure with a snap-fit ​​design according to any one of claims 1 to 12; The first plate; The second plate; as well as The clamping member is a lamp plate, and has a plate body and at least one light-emitting element, wherein the at least one light-emitting element is disposed on one side of the plate body, the at least one through hole passes through the plate body, and the number of the at least one through hole is greater than or equal to the number of the at least one combined structure.

14. The backlight module according to claim 13, characterized in that, The first plate is a reflective sheet, and the second plate is a back plate. The at least one light-emitting element is disposed on one side of the plate and faces the first plate.

15. The backlight module according to claim 13, characterized in that, The first plate is a back plate, and the second plate is a reflective sheet. The at least one light-emitting element is disposed on one side of the plate and faces the second plate.

16. A display device, characterized in that, include: The backlight module according to any one of claims 13 to 15; as well as A display panel is positioned relative to the backlight module.

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