Frame module of display device

Abstract

A frame module of a display device is used for fixing an optical film and comprises a back plate and a first fastener. The back plate comprises a bottom plate and a first side plate vertically arranged on the bottom plate. The first side plate comprises a first positioning groove for accommodating a first lug of the optical film. The first positioning groove is recessed from the upper surface of the first side plate and is provided with a first groove and a second groove. The first groove is configured to accommodate the first lug. The second groove is communicated with the upper portion of the first groove. The second groove is longer than the first groove in the extending direction of the first side plate. The first buckling piece is arranged in the first positioning groove and covers the first convex lug. The first buckling piece comprises a first main body and two first bosses. And the first main body is fixed in the second groove. The two first bosses are arranged at the two opposite ends of the upper surface of the first body in a protruding mode respectively. The combination of the first positioning grooves and the first fasteners can effectively position the lugs, facilitates the assembly of the optical film and the light-transmitting substrate, and can solve the problem of glue overflow.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a frame module for a display device. Background Technology

[0002] When assembling a display device, the light guide plate and optical film are first placed at an angle against the top side panel of the back panel, and the lugs of the optical film are inserted into the slots of the top side panel. Next, the light guide plate and optical film are lowered towards the bottom side of the back panel and then secured with adhesive. Furthermore, to control the amount of adhesive overflow during cover plate installation, height-limiting blocks are added to the upper surface of the side panels around the back panel.

[0003] With this assembly, the left and right sides of the optical film are suspended. When the display device is inverted, the optical film may droop from the middle due to its own weight. This could cause the lugs of the optical film to disengage from the slots in the side panels, leading to the optical film detaching. Furthermore, plasma treatment is required before applying adhesive to the side panels. The airflow generated during plasma treatment causes the left and right sides of the optical film to bulge, allowing particles from the gap between the back panel and the optical film to enter the interlayer of the optical film. These particles may not only damage the optical film but also affect its optical performance.

[0004] On the other hand, as the bezels of display devices become increasingly narrow, attaching height-limiting blocks becomes difficult, resulting in poor assembly efficiency and attachment accuracy, and causing adhesive overflow during cover plate attachment. Furthermore, using an attachment method for height-limiting blocks carries the risk of them falling off during transportation or use. Summary of the Invention

[0005] Therefore, one objective of this disclosure is to provide a frame module for a display device that can solve the problems existing in the current display device assembly technology, such as high risk of optical film detachment, optical film contamination by particles, poor assembly efficiency, difficulty in attaching height limiting blocks and easy detachment, and poor attachment accuracy of height limiting blocks.

[0006] In accordance with the aforementioned objectives of this disclosure, a frame module for a display device is provided for fixing an optical film. This frame module includes a back plate and a first fastener. The back plate includes a base plate and a first side plate erected on the base plate. The first side plate includes a first positioning groove for accommodating a first lug of the optical film. The first positioning groove is recessed from the upper surface of the first side plate and has a first groove and a second groove. The first groove is configured to accommodate the first lug. The second groove communicates with the upper part of the first groove. The second groove is longer than the first groove in the extending direction of the first side plate. The first fastener is disposed in the first positioning groove and covers the first lug. The first fastener includes a first body and two first bosses. The first body is fixed in the second groove. The two first bosses protrude from opposite ends of the upper surface of the first body.

[0007] According to one embodiment of this disclosure, the first fastener further includes a first limiting wall. The first limiting wall protrudes from the lower surface of the first body toward the base plate, and the outer side of the first limiting wall abuts against the inner side of the first side plate.

[0008] According to one embodiment of this disclosure, the first side plate has two first positioning holes respectively disposed on opposite sides of the first positioning groove. The first fastener further includes two first protruding wings and a first positioning post. The two first protruding wings extend from opposite end faces of the first body toward each other. The two first positioning posts are respectively protruding on the first protruding wings and respectively pass through the first positioning holes.

[0009] According to one embodiment of the present disclosure, the first fastener is an integrally formed structure.

[0010] According to one embodiment of the present disclosure, the second groove includes two bottom surfaces located on opposite sides of the first groove, and the lower surface of the first body engages with these bottom surfaces.

[0011] According to one embodiment of this disclosure, the first protrusions overlap with these bottom surfaces respectively.

[0012] According to one embodiment of the present disclosure, the frame module of the display device further includes two adhesive members respectively disposed on these bottom surfaces to attach the lower surface of the first body to the bottom surfaces.

[0013] According to one embodiment of this disclosure, the first positioning groove is a T-shaped groove.

[0014] According to one embodiment of this disclosure, the back plate further includes a second side plate erected on the base plate and engaged with the first side plate. The second side plate includes a second positioning groove for receiving a second lug of an optical film. The structure of the second positioning groove is the same as that of the first positioning groove.

[0015] According to one embodiment of this disclosure, the back plate further includes a third side plate erected on the base plate and engaging with the first side plate and opposite to the second side plate. The third side plate includes a third positioning groove for accommodating a third lug of an optical film. The structure of the third positioning groove is the same as that of the first positioning groove.

[0016] According to one embodiment of the present disclosure, the first protrusion is configured to support a light-transmitting substrate, and the light-transmitting substrate is bonded to the upper surface of the first body using a water-based adhesive.

[0017] According to the above embodiment, corresponding to the lug of the optical film, the frame module of the display device has positioning grooves formed from the upper surface of the side plate of the back plate towards the bottom plate, and each positioning groove has a first groove and a second groove that are interconnected. The first groove located below can accommodate the lug. In this way, the light guide plate and the optical film can be assembled vertically downwards towards the bottom plate, improving the ease of assembly. The frame module of the display device further includes a fastener that can be correspondingly disposed in the positioning groove. The body of the fastener can be fixed in the second groove to cover and position the lug.

[0018] Furthermore, positioning grooves can be provided on the top side and the left and right sides of the back plate, so that the optical film can be provided with lugs on three sides. In this way, the optical film can be supported and positioned by the side plates of the back plate and the fasteners on three sides, thus effectively preventing the optical film from falling off the side plates and preventing particles from entering the interlayer of the optical film.

[0019] Furthermore, each snap-fit ​​component has protrusions at opposite ends of its upper surface. These protrusions are pre-formed onto the upper surface of the component during manufacturing. Therefore, the need for attaching the protrusions during assembly is eliminated, improving assembly efficiency. In addition, the protrusions pose no risk of falling off, and their position is highly controllable, effectively preventing adhesive overflow during the assembly of the light-transmitting substrate. Attached Figure Description

[0020] A better understanding of the features disclosed herein can be obtained from the following detailed description taken in conjunction with the accompanying drawings. It should be noted that, according to industry standard practice, the features are not drawn to scale. In fact, the dimensions of the features can be arbitrarily increased or decreased for clarity of discussion.

[0021] Figure 1 A perspective view of a frame module of a display device according to a first embodiment of the present disclosure is shown.

[0022] Figure 2 A partially exploded schematic diagram of a frame module of a display device according to a first embodiment of the present disclosure is shown.

[0023] Figure 3 A partial schematic diagram is shown of a frame module of a display device according to the first embodiment of the present disclosure during optical film assembly.

[0024] Figure 4 A partial cross-sectional view of a frame module of a display device according to the first embodiment of this disclosure after being disposed on a light-transmitting substrate is shown.

[0025] Figure 5 A partially exploded schematic diagram of the frame module of a display device according to the second embodiment of this disclosure during optical film assembly is shown.

[0026] Figure 6 A partial perspective view of a display device frame module assembled with an optical film according to a second embodiment of the present disclosure is shown.

[0027] In the attached figures, the following labels are used:

[0028] 10: Frame module of display device

[0029] 10a: Frame module of display device

[0030] 20: Optical films

[0031] 22: First protruding ear

[0032] 24: Second protruding ear

[0033] 26: Third protruding ear

[0034] 100: Backplate

[0035] 100a: Backplate

[0036] 110: Base Plate

[0037] 120: First side plate

[0038] 120a: First side plate

[0039] 122: First positioning groove

[0040] 124: Upper surface

[0041] 126: Inner side

[0042] 130: Second side panel

[0043] 130a: Second side plate

[0044] 132: Second positioning groove

[0045] 140: Third side panel

[0046] 142: Third positioning groove

[0047] 200: First fastener

[0048] 200a: First fastener

[0049] 210: The First Subject

[0050] 211: Upper surface

[0051] 211a: End

[0052] 211b: End

[0053] 212: Lower surface

[0054] 213: Inner side

[0055] 214: Outer side

[0056] 215: End face

[0057] 216: End face

[0058] 220: First boss

[0059] 230: First limiting retaining wall

[0060] 232: Outer side

[0061] 240: First convex wing

[0062] 250: First positioning post

[0063] 300: Adhesive components

[0064] 400: Second fastener

[0065] 400a: Second fastener

[0066] 500: Third fastener

[0067] 600: Transparent substrate

[0068] 700: Water-based glue

[0069] AS: Compartmental Space

[0070] C1: First groove

[0071] C2: Second groove

[0072] C2b: Bottom

[0073] ED: Direction of extension

[0074] PH1: First positioning hole Detailed Implementation

[0075] The embodiments of this disclosure are discussed in detail below. However, it will be understood that the embodiments provide many applicable concepts that can be implemented in a wide variety of specific situations. The embodiments discussed and disclosed are for illustrative purposes only and are not intended to limit the scope of this disclosure. All embodiments of this disclosure reveal a variety of different features, but these features can be implemented individually or in combination as needed.

[0076] In addition, the terms "first," "second," etc. used in this article do not specifically refer to order or sequence, but are only used to distinguish elements or operations described using the same technical terms.

[0077] The spatial relationship between the two elements described in this disclosure applies not only to the orientation shown in the diagrams, but also to orientations not shown in the diagrams, such as inverted orientations. Furthermore, the terms "connection," "electrical connection," or similar expressions used in this disclosure to refer to two components are not limited to a direct or electrical connection, but may also include indirect or electrical connections as needed.

[0078] The terms “approximately” and “substantially” as used herein generally refer to within 20%, 10%, or 5% of a given value or range. These values ​​are merely examples and are not intended to be limiting. The terms “approximately” and “substantially” may refer to percentages of values ​​as interpreted by one skilled in the art in accordance with the teachings herein.

[0079] Please refer to Figures 1 to 3 The diagrams illustrate a perspective view and a partially exploded view of a frame module 10 of a display device according to a first embodiment of the present disclosure, as well as a partial view of the frame module 10 of the display device assembled with an optical film 20. The frame module 10 of the display device can be used to fix the optical film 20 and can support other components of the display device, such as a backlight assembly and a display panel. The optical film 20 may include a first lug 22 located on one side of the optical film 20. In some embodiments, the optical film 20 includes a second lug 24. The second lug 24 and the first lug 22 are respectively located on two adjacent sides of the optical film 20. In other embodiments, the optical film 20 further includes a third lug 26. The third lug 26 and the first lug 22 are respectively located on two adjacent sides of the optical film 20, and are located on opposite sides of the optical film 20, respectively, as are the second lug 24.

[0080] The frame module 10 of the display device mainly includes a back plate 100 and a first fastener 200. The back plate 100 is used to mount the backlight assembly and support the display panel. Therefore, the back plate 100 has structural strength to support the backlight assembly and the display panel. The back plate 100 can be a sheet metal part, such as an iron plate. The back plate 100 can be a stamped metal plate. The back plate 100 mainly includes a base plate 110 and a first side plate 120. The shape of the base plate 110 can be determined based on the shape of the display device. For example, the shape of the base plate 110 can be rectangular or square.

[0081] like Figure 2 As shown, a first side plate 120 is erected on a base plate 110. The first side plate 120 may be substantially perpendicular to the base plate 110, for example. The first side plate 120 may be disposed on the outer edge of one side of the base plate 110. An accommodating space AS is formed above the base plate 110 and within the first side plate 120.

[0082] The first side plate 120 includes a first positioning groove 122. The first positioning groove 122 can accommodate the first lug 22 of the optical diaphragm 20 for further positioning of the optical diaphragm 20. The first positioning groove 122 is recessed into the first side plate 120 from the upper surface 124 toward the bottom plate 110. That is, the upper surface 124 of the first side plate 120 is the surface of the first side plate 120 opposite to or opposite to the bottom plate 110.

[0083] The first positioning groove 122 may have a first groove C1 and a second groove C2. Both the first groove C1 and the second groove C2 extend along the extending direction ED of the first side plate 120. The first groove C1 can be used to accommodate the first lug 22 of the optical film 20. The first groove C1 is slightly larger than the first lug 22 in the extending direction ED so that the first lug 22 can be smoothly disposed in the first groove C1. The second groove C2 is located above the first groove C1 and communicates with the first groove C1. The second groove C2 is longer than the first groove C1 in the extending direction ED. The first groove C1 may be located below the middle region of the second groove C2, such that the second groove C2 may include two bottom surfaces C2b located on opposite sides of the first groove C1. In some embodiments, the first groove C1 and the second groove C2 have the same central axis, and the first positioning groove 122 is a symmetrical groove structure. The first positioning groove 122 may be a T-shaped groove.

[0084] Depending on product requirements, the number of the first positioning groove 122 and the first lug 22 may not be limited to one. The number of the first positioning groove 122 is the same as the number of the first lug 22, and the position of the first positioning groove 122 corresponds to the position of the first lug 22.

[0085] Please refer to this again. Figure 2 and Figure 3 The first latching member 200 is disposed in the first positioning groove 122 and can cover the first lug 22 disposed in the first groove C1. Since the first positioning groove 122 is recessed into the first side plate 120 from the upper surface 124, the first lug 22 can be placed directly in the first groove C1 from top to bottom, and the first latching member 200 can also be placed in the first positioning groove 122 from top to bottom. In this way, the optical film 20 can be easily assembled into the frame module 10 of the display device.

[0086] The first snap-fit ​​member 200 mainly includes a first body 210 and two first protrusions 220. The first body 210 includes an upper surface 211 and a lower surface 212 facing each other, an inner surface 213 and an outer surface 214 facing each other, and two end faces 215 and 216 facing each other. The shape of the first body 210 corresponds to the shape of the second groove C2, but the size of the first body 210 is slightly smaller than that of the second groove C2. For example, the first body 210 is a strip-shaped structure with a length slightly smaller than that of the second groove C2. When the first snap-fit ​​member 200 is disposed in the first positioning groove 122, the first body 210 is fixed in the second groove C2. Specifically, the lower surface 212 of the first body 210 engages with the bottom surface C2b of the second groove C2.

[0087] In some embodiments, the frame module 10 of the display device further includes two adhesive members 300 respectively disposed on the two bottom surfaces C2b of the second groove C2. The adhesive members 300 can adhere the lower surface 212 of the first body 210 to the bottom surface C2b, thereby fixing the first body 210 in the second groove C2. For example, the adhesive member 300 can be double-sided tape or an adhesive. Since the adhesive member 300 is disposed on the bottom surface C2b, there is no adhesive material in the middle area of ​​the lower surface 212 of the first body 210, thereby preventing the first lug 22 in the first groove C1 from being adhered.

[0088] The upper surface 211 of the first body 210 includes two opposing ends 211a and 211b. Two first protrusions 220 are respectively provided on these two ends 211a and 211b of the upper surface 211 of the first body 210. The first protrusions 220 may be provided between the inner side surface 213 and the outer side surface 214 of the first body 210, and are closer to the inner side surface 213. In some embodiments, the two first protrusions 220 are flush with the inner side surface 213 of the first body 210. In addition, the two first protrusions 220 may be flush with the end faces 215 and 216 of the adjacent first body 210, respectively. In some embodiments, the first protrusions 220 correspond to and overlap with the bottom surface C2b of the second groove C2. For example, the first protrusion 220 may be longer than the corresponding bottom surface C2b, and the overlap length between the first protrusion 220 and the corresponding bottom surface C2b is at least 2 / 3 of the length of the first protrusion 220. The first boss 220 can also be of the same length as the corresponding bottom surface C2b and completely overlap. The length of each first boss 220 is less than 1 / 2 of the length of the first body 210.

[0089] Since the first protrusion 220 is located on the inner side 213 of the first body 210, it can effectively prevent adhesive from overflowing and affecting the appearance of the frame module 10 of the display device. In addition, since the first protrusion 220 overlaps with the corresponding bottom surface C2b and there is a gap between the two first protrusions 220, when the first body 210 is subjected to pressure from above, the middle part of the first body 210 can be prevented from collapsing and entering the first groove C1 and pressing down on the first lug 22, thereby preventing it from affecting the expansion and contraction of the optical film 20.

[0090] In some embodiments, the first fastener 200 is a one-piece structure. That is, the first body 210 and the two first protrusions 220 are formed simultaneously as a single piece. For example, the first fastener 200 can be injection molded from polyethylene terephthalate (PET) or polycarbonate (PC). Since the first protrusions 220 are directly molded onto the upper surface 211 of the first body 210, and are not separately assembled onto the upper surface 211, the time for assembling the first protrusions 220 can be saved. In addition, the one-piece design can effectively prevent the first protrusions 220 from falling off, and the position of the first protrusions 220 on the upper surface 211 can be precisely controlled.

[0091] Please continue to refer to Figure 2 and Figure 3 In some embodiments, the first latching member 200 further includes a first limiting wall 230. The first limiting wall 230 protrudes from the lower surface 212 of the first body 210 toward the base plate 110. The first limiting wall 230 is spaced from the outer side 214 of the first body 210 and adjacent to the inner side 213. For example, the first limiting wall 230 may be aligned with the inner side 213 of the first body 210. Furthermore, the length of the first limiting wall 230 may be, for example, equal to the length of the first body 210, and the first limiting wall 230 is flush with end faces 215 and 216. In such embodiments, the first latching member 200 may be an integrally molded structure. For example, the first latching member 200, comprising the first body 210, the first boss 220, and the first limiting wall 230, may be injection molded from polyethylene terephthalate or polycarbonate.

[0092] The outer surface 232 of the first limiting barrier 230 abuts against the inner surface 126 of the first side plate 120. The first limiting barrier 230 is located above and spaced apart from the first lug 22 of the optical film 20. Therefore, the first limiting barrier 230 does not interfere with the expansion and contraction of the optical film 20. The first limiting barrier 230 can reliably position the first fastener 200 on the first side plate 120, thus effectively preventing the first fastener 200 from shifting during attachment, thereby solving the problem of excess or insufficient adhesive when subsequent components are attached to the first fastener 200.

[0093] In one exemplary embodiment, the width of the first lug 22 of the optical diaphragm 20 is 10 mm to ensure the structural strength of the first lug 22. The length of the first fastener 200 is 19 mm to 22 mm, the width is 2.3 mm, and the height is 1.9 mm. If the length of the first fastener 200 is too large, it will reduce the adhesive application area of ​​the back plate 100, thus affecting the adhesive strength of the components attached to the back plate 100. In addition, the distance between the first limiting barrier 230 and the outer side 214 of the first body 210 is 4 mm to provide sufficient adhesive width so that the first fastener 200 can be firmly attached to the bottom surface C2b of the second groove C2. The width and height of the first limiting barrier 230 are 0.5 mm to avoid interfering with the expansion and contraction of the optical diaphragm 20. Considering both structural strength and preventing adhesive overflow, the length of the first boss 220 is 5 mm, the width is 0.8 mm, and the height is 0.3 mm.

[0094] Please refer to Figure 1 and Figure 2 In some embodiments, the back plate 100 further includes a second side plate 130. The second side plate 130 is erected on the base plate 110 and can engage with the first side plate 120. The second side plate 130 and the first side plate 120 can be disposed along the outer edge of the base plate 110. In these embodiments, the optical film 20 further includes a second lug 24. Corresponding to the position of the second lug 24 on the optical film 20, the second side plate 130 includes a second positioning groove 132 to accommodate the second lug 24. Corresponding to the structure of the second positioning groove 132, the frame module 10 of the display device further includes a second fastener 400. In some exemplary embodiments, the structure of the second positioning groove 132 is the same as that of the first positioning groove 122, and the structure of the second fastener 400 is the same as that of the first fastener 200. Therefore, the structures of the second positioning groove 132 and the second fastener 400 will not be described in detail here.

[0095] like Figure 1 As shown, in some embodiments, the back plate 100 further includes a third side plate 140 erected on the base plate 110 and capable of engaging with the first side plate 120. The third side plate 140 and the second side plate 130 are respectively engaged at opposite ends of the first side plate 120 and are opposite to each other. Furthermore, the optical film 20 also includes a third lug 26. Corresponding to the position of the third lug 26 on the optical film 20, the third side plate 140 includes a third positioning groove 142 to accommodate the third lug 26. Corresponding to the structure of the third positioning groove 142, the frame module 10 of the display device includes a third latching member 500. In some exemplary embodiments, the third positioning groove 142 has the same structure as the first positioning groove 122, and the third latching member 500 has the same structure as the first latching member 200. The structures of the third positioning groove 142 and the third latching member 500 will not be described in detail here.

[0096] The first side plate 120, the second side plate 130, and the third side plate 140 on the three sides of the back plate 100 are respectively provided with a first positioning groove 122, a second positioning groove 132, and a third positioning groove 142, which can respectively accommodate the first lug 22, the second lug 24, and the third lug 26 on the three sides of the optical film 20. The first positioning groove 122, the second positioning groove 132, and the third positioning groove 142 cooperate with the corresponding first fastener 200, the second fastener 400, and the third fastener 500 to effectively position and support the first lug 22, the second lug 24, and the third lug 26. Therefore, it can effectively prevent the optical film 20 from falling off the first side plate 120, the second side plate 130, and the third side plate 140, and can also prevent particles from entering the interlayer of the optical film 20.

[0097] Please refer to the following at the same time Figures 2 to 4 ,in Figure 4 A partial cross-sectional view of a frame module 10 of a display device according to the first embodiment of this disclosure is shown after it is disposed on a light-transmitting substrate 600. A first boss 220 of a first latching member 200 supports the light-transmitting substrate 600. The material of the light-transmitting substrate 600 may be, for example, glass. The light-transmitting substrate 600 can be bonded to the upper surface 211 of the first body 210 of the first latching member 200 using adhesive 700. By using the first boss 220 to support the light-transmitting substrate 600, the adhesive 700 can be effectively prevented from overflowing onto the outer side of the first side plate 120.

[0098] Please refer to Figure 5 and Figure 6 The diagrams illustrate a partially exploded view of the frame module 10a of a display device according to the second embodiment of the present disclosure during assembly with the optical film 20, and a partially three-dimensional view after assembly with the optical film 20. The structure of the frame module 10a of the display device is generally the same as that of the frame module 10 of the display device. The difference between the frame module 10a and 10 is that the combination structure of the back plate 100a and the first fastener 200a of the frame module 10a is different from that of the frame module 10 of the display device.

[0099] In addition to the first positioning groove 122, the first side plate 120a of the back plate 100a further has two first positioning holes PH1. These two first positioning holes PH1 are respectively provided on opposite sides of the first positioning groove 122. Corresponding to the first positioning holes PH1 of the first side plate 120a, the first fastener 200a includes two first protruding wings 240 and two first positioning posts 250. These two first protruding wings 240 extend from opposite end faces 215 and 216 of the first body 210, respectively, back to back. The first protruding wings 240 are adjacent to the inner side face 213 of the first body 210 and are spaced apart from the outer side face 214 of the first body 210. For example, the first protruding wings 240 may be flush with the inner side face 213 of the first body 210.

[0100] Two first positioning posts 250 are respectively disposed on the first convex wing 240 and protrude toward the first side plate 120a. These two first positioning posts 250 are respectively inserted into the two first positioning holes PH1. The shape of the first positioning post 250 may be the same as the first positioning hole PH1 of the first side plate 120a. Furthermore, the size of the first positioning post 250 is slightly smaller than the first positioning hole PH1 to facilitate insertion into the first positioning hole PH1. Through the design of the first positioning post 250 and the first positioning hole PH1, the movement of the first fastener 200a in the extension direction ED of the first side plate 120a and in the direction perpendicular to the base plate 110 can be restricted. This allows for more accurate positioning of the first fastener 200a and facilitates its assembly. The first fastener 200a may be an integrally molded structure made of polyethylene terephthalate or polycarbonate.

[0101] In one exemplary embodiment, the width of the first lug 22 of the optical diaphragm 20 is 10 mm to ensure the structural strength of the first lug 22. The length of the first latch 200a is 29 mm to 32 mm, the width is 2.3 mm, and the height is 1.4 mm. If the length of the first latch 200a is too large, it will reduce the adhesive area of ​​the back plate 100a, thereby reducing the adhesive strength of the components attached to the back plate 100a. In addition, the length of the first wing 240 extending outward from the first end face 215 and the second end face 216 is 3 mm to 5 mm. The distance between the first limiting barrier 230 and the outer side surface 214 of the first body 210 is 4 mm to provide sufficient adhesive width so that the first latch 200 can be firmly attached to the second groove C2. The distance of the first limiting barrier 230 extending toward the base plate 110 is 0.5 mm to avoid interfering with the expansion and contraction of the optical diaphragm 20. Taking into account both structural strength and prevention of adhesive overflow, the first boss 220 has a length of 5mm, a width of 0.8mm, and a height of 0.3mm.

[0102] In some embodiments, the frame module 10a of the display device further includes a second side plate 130a and a third side plate (not shown). The second side plate 130a and the third side plate are respectively joined to opposite ends of the first side plate 120a and face each other. The second side plate 130a and the third side plate respectively include a second positioning groove 132 and a third positioning groove (not shown), wherein the structure of the second positioning groove 132 and the third positioning groove is the same as that of the first positioning groove 122. In such an embodiment, the frame module 10a of the display device also includes a second latching member 400a and a third latching member (not shown). The structure of the second latching member 400a and the third latching member is the same as that of the first latching member 200a. The second latching member 400a and the third latching member can be correspondingly disposed in the second positioning groove 132 and the third positioning groove to position such as Figure 1The second lug 24 and the third lug 26 of the optical film 20 shown.

[0103] As can be seen from the above embodiments, corresponding to the lugs of the optical film, the frame module of the display device disclosed herein has positioning grooves formed from the upper surface of the side plate of the back plate toward the bottom plate, and each positioning groove has a first groove and a second groove that are interconnected. The first groove located below can accommodate the lugs. Therefore, the light guide plate and the optical film can be assembled vertically downward toward the bottom plate, thereby improving the convenience of assembly. The frame module of the display device further includes a fastener that can be correspondingly disposed in the positioning groove. The body of the fastener can be fixed in the second groove to cover and position the lugs.

[0104] Furthermore, positioning grooves can be provided on the top side and the left and right sides of the back plate, so that the optical film can be provided with lugs on three sides. In this way, the optical film can be supported and positioned by the side plates of the back plate and the fasteners on three sides, thus effectively preventing the optical film from falling off the side plates and preventing particles from entering the interlayer of the optical film.

[0105] Furthermore, each snap-fit ​​component has protrusions at opposite ends of its upper surface. These protrusions are pre-formed onto the upper surface of the component during manufacturing. Therefore, the need for attaching the protrusions during assembly is eliminated, improving assembly efficiency. In addition, the protrusions pose no risk of falling off, and their position is highly controllable, effectively preventing adhesive overflow during the assembly of the light-transmitting substrate.

[0106] Although this disclosure has been shown above by way of embodiments, it is not intended to limit this disclosure. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of this disclosure shall be determined by the appended claims.

Claims

1. A frame module for a display device, used to fix an optical film, characterized in that, The frame module of the display device includes: A backplate includes a base plate and a first side plate disposed on the base plate, wherein the first side plate includes a first positioning groove for accommodating a first lug of the optical film, the first positioning groove being recessed from an upper surface of the first side plate and having the following characteristics: A first groove, configured to receive the first lug; and A second groove, communicating above the first groove, wherein the second groove is longer than the first groove in an extending direction of the first side plate; and A first fastener is disposed in the first positioning groove and covers the first lug, wherein the first fastener comprises: A first main body is fixed in the second groove; and Two first protrusions are respectively provided on opposite ends of an upper surface of the first body.

2. The frame module of the display device as described in claim 1, characterized in that, The first fastener also includes a first limiting wall, wherein the first limiting wall protrudes from a lower surface of the first body toward the base plate, and an outer side of the first limiting wall abuts against an inner side of the first side plate.

3. The frame module of the display device as described in claim 1, characterized in that, The first side plate has two first positioning holes respectively disposed on opposite sides of the first positioning groove, and the first fastener also includes: Two first convex wings extend from opposite end faces of the first main body, facing away from each other; and Two first positioning pins are respectively protruding on the first convex wings and respectively passing through the first positioning holes.

4. The frame module of the display device as described in any one of claims 1 to 3, characterized in that, The first fastener is a one-piece molded structure.

5. The frame module of the display device as described in claim 1, characterized in that, The second groove includes two bottom surfaces located on opposite sides of the first groove, and a lower surface of the first body engages with these bottom surfaces.

6. The frame module of the display device as described in claim 5, characterized in that, These first protrusions overlap with these bottom surfaces respectively.

7. The frame module of the display device as described in claim 5, characterized in that, The frame module of the display device also includes two adhesive members respectively disposed on the bottom surfaces to attach the lower surface of the first body to the bottom surfaces.

8. The frame module of the display device as claimed in claim 1, characterized in that, The first positioning groove is a T-shaped groove.

9. The frame module of the display device as claimed in claim 1, characterized in that, The back plate also includes a second side plate erected on the base plate and engaged with the first side plate, wherein the second side plate includes a second positioning groove for accommodating a second lug of the optical film, and the structure of the second positioning groove is the same as that of the first positioning groove.

10. The frame module of the display device as claimed in claim 9, characterized in that, The back plate also includes a third side plate erected on the base plate and joined to the first side plate and opposite to the second side plate, wherein the third side plate includes a third positioning groove for accommodating a third lug of the optical film, and the structure of the third positioning groove is the same as that of the first positioning groove.

11. The frame module of the display device as claimed in claim 1, characterized in that, The first protrusions are configured to support a light-transmitting substrate, which is bonded to the upper surface of the first body using a water-based adhesive.

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