Optical film fixing assembly and display panel

Abstract

The present invention provides an optical film fixing assembly and a display panel, comprising: an optical film having an edge limiting region, the edge limiting region including a snap-in portion and a limiting groove partially surrounding the snap-in portion, the limiting groove penetrating the optical film; a fixing frame having a bearing surface, a protrusion provided on the bearing surface, and a snap-in groove formed on a portion of the sidewall of the protrusion; the protrusion being adapted to be placed in the limiting groove, and the snap-in portion being adapted to be inserted into the slot; and a gap being provided between the protrusion and the optical film when the snap-in portion is inserted into the slot. Since a gap is provided between the protrusion and the optical film when the snap-in portion is inserted into the slot, when the optical film undergoes thermal expansion and contraction and deformation, the gap provides deformation space for the optical film, thereby preventing the optical film from bending or wrinkling abnormally; the slot can effectively limit the position of the snap-in portion, preventing the snap-in portion from being separated from the slot, thereby improving the fixing frame's ability to limit the optical film.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to an optical film fixing assembly and a display panel. Background Art

[0002] In the field of display technology, in the backlight source of a liquid crystal display device, an optical film composed of multiple layers of thin films such as a lower diffusion film, a prism film, and an upper diffusion film is provided above the light guide plate. The optical film is usually made of plastic and its total thickness is generally less than 2 mm. In order to prevent the optical film from moving or falling off during transportation, assembly, and use of the backlight source, a fixing frame for fixing the optical film is required. The optical film and the fixing frame are combined into an optical film fixing assembly.

[0003] However, in the optical film fixing assembly in the prior art, the optical film is prone to bending, resulting in display abnormalities, and the fixing frame has a poor ability to limit the optical film. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art optical film fixing assembly that the optical film is prone to bending or wrinkling and the fixing frame has poor limiting ability on the optical film, thereby providing an optical film fixing assembly and a display panel.

[0005] The present invention provides an optical film fixing assembly, comprising: an optical film, wherein the optical film has an edge limiting area, the edge limiting area includes a locking portion and a limiting groove that partially surrounds the locking portion, and the limiting groove passes through the optical film; a fixing frame, wherein the fixing frame has a bearing surface, a protrusion is provided on the bearing surface, and a locking groove is opened on part of the side wall of the protrusion; the protrusion is suitable for being placed in the limiting groove, and the locking portion is suitable for being embedded in the locking slot; when the locking portion is embedded in the locking slot, a gap is formed between the protrusion and the optical film.

[0006] Optionally, on the light-emitting surface parallel to the optical film, the limiting groove includes a first limiting sub-groove, a second limiting sub-groove and a third limiting sub-groove which are connected in series and interconnected, the first limiting sub-groove and the third limiting sub-groove are arranged opposite to each other, and the second limiting sub-groove is located on the same side of the first limiting sub-groove and the third limiting member; the protrusion has a first side layer and a second side layer relative to each other, and a top layer connected to the first side layer and the second side layer and arranged opposite to the bearing surface; the card slot is located between the first side layer and the second side layer and at the bottom of the top layer; the first side layer is suitable for extending into the first limiting sub-groove, and the second side layer is suitable for extending into the second limiting sub-groove.

[0007] Optionally, the fixing frame below the card slot has an opening that passes through the fixing frame; or, the fixing frame below the card slot is a solid structure, and the card slot is located between the first side layer and the second side layer and between the top layer and the bearing surface.

[0008] Optionally, the slot passes through the protrusion along a first direction, the first direction is parallel to the light-emitting surface of the optical film, and the first direction is perpendicular to an arrangement direction from the first side layer to the second side layer.

[0009] Optionally, the protrusion further has a third side layer, the third side layer is connected to the first side layer, the second side layer and the top layer, and the third side layer is located at the bottom of the slot.

[0010] Optionally, the second limiting sub-groove is located on a side of the first limiting sub-groove and the third limiting sub-groove facing away from an outer edge of the optical film.

[0011] Optionally, the width of the first limiting sub-groove is 2mm to 6mm, and the length of the first limiting sub-groove is 6mm to 10mm; the width of the second limiting sub-groove is 1mm to 5mm, and the length of the second limiting sub-groove is 10mm to 20mm; the width of the third limiting sub-groove is 2mm to 6mm, and the length of the third limiting sub-groove is 6mm to 10mm.

[0012] Optionally, the edges of the first limiting sub-groove, the second limiting sub-groove and the third limiting sub-groove are arc-shaped.

[0013] Optionally, the angle between the extension direction of the first limiting sub-groove and the extension direction of the second limiting sub-groove is 75° to 105°; the angle between the extension direction of the third limiting sub-groove and the extension direction of the second limiting sub-groove is 75° to 105°.

[0014] Optionally, the optical film has a plurality of spaced edge limiting areas, and the plurality of spaced edge limiting areas surround a central area of ​​the optical film.

[0015] Optionally, the distance between adjacent edge limiting areas is 20 mm to 60 mm.

[0016] Optionally, the width of the gap is 0.1 mm to 5 mm.

[0017] Optionally, the central area of ​​the fixing frame has a receiving groove; the opening of the receiving groove faces the bearing surface; the receiving groove is suitable for placing a light guide plate and a side light source, or the receiving groove is suitable for placing a light source.

[0018] The present invention also provides a display panel, comprising the optical film fixing assembly provided by the present invention.

[0019] The technical solution of the present invention has the following beneficial effects:

[0020] 1. The optical film fixing assembly provided by the technical solution of the present invention has a gap between the protrusion and the optical film when the embedding portion is embedded in the slot. Therefore, when the optical film is deformed by thermal expansion and contraction due to environmental influences, the gap provides a deformation space for the optical film in the horizontal direction, thereby preventing the optical film from bending or wrinkling abnormally. At the same time, since some side walls of the protrusion are provided with a slot, the embedding portion of the optical film is suitable for embedding in the slot. When the embedding portion is embedded in the slot, the slot can effectively limit the position of the embedding portion and prevent the embedding portion from escaping from the slot. In this way, the optical film is prevented from escaping from the fixing frame, and the fixing frame has a better limiting ability on the optical film.

[0021] 2. Furthermore, the second limiting sub-groove is located on the side of the first limiting sub-groove and the third limiting sub-groove facing away from the outer edge of the optical film. The first limiting sub-groove, the second limiting sub-groove and the third limiting sub-groove form a U-shaped groove. Since light can pass through the limiting groove, the second limiting sub-groove is arranged on the side of the U-shaped groove away from the outer edge of the optical film. This can reduce the edge light leakage phenomenon when the display panel is viewed from the side, which is beneficial to reducing the frame size of the display panel.

[0022] 3. Furthermore, the edges of the first limiting sub-groove, the second limiting sub-groove and the third limiting sub-groove are in an arc shape, which can prevent abnormal corner wear of the optical film when the optical film expands or contracts due to heat or when the optical film fixing component structure moves relative to the fixed frame during transportation, assembly, vibration testing, etc.

[0023] 4. The display panel provided by the technical solution of the present invention includes the optical film fixing assembly provided by the technical solution of the present invention. Since there is a gap between the protrusion and the optical film when the card-embedding portion is embedded in the card slot, when the optical film is deformed due to thermal expansion and contraction caused by environmental influences, the gap provides a deformation space in the horizontal direction for the optical film, thereby preventing the optical film from bending or wrinkling abnormally; at the same time, since part of the side wall of the protrusion is provided with a card slot, the card-embedding portion of the optical film is suitable for being embedded in the card slot. When the card-embedding portion is embedded in the card slot, the card slot can effectively limit the position of the card-embedding portion to prevent the card-embedding portion from escaping from the card slot, thereby preventing the optical film from escaping from the fixed frame, so that the fixed frame has a better limiting ability on the optical film. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of an optical film provided in one embodiment of the present invention;

[0026] Figure 2 for Figure 1 A partial enlarged schematic diagram of the structure shown in part A;

[0027] Figure 3 A schematic top view of the optical film fixing assembly provided in one embodiment of the present invention;

[0028] Figure 4 for Figure 3 A partial enlarged schematic diagram of the structure shown in position B;

[0029] Figure 5 A schematic front view of the structure of an optical film fixing assembly provided in one embodiment of the present invention;

[0030] Figure 6 for Figure 5 A partial enlarged schematic diagram of the structure shown in position C in the middle;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of an optical film fixing assembly provided in one embodiment of the present invention;

[0032] Figure 8 for Figure 7 A partial enlarged schematic diagram of the structure shown in position D in the middle;

[0033] Figure 9 A schematic structural diagram of a fixing frame provided in one embodiment of the present invention;

[0034] Figure 10 for Figure 9 A partial enlarged schematic diagram of the structure shown in position E in the middle;

[0035] Figure 11 A schematic structural diagram of a display panel provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0036] An optical film fixing part is provided. The optical film is fixed by riveting using a circular hole provided on the optical film and a boss provided on a fixing frame. However, when a liquid crystal display device is used in cold or high temperature environments, the optical film will deform due to thermal expansion and contraction. Due to the limitation of the boss, the optical film may bend, resulting in display abnormalities.

[0037] As an improvement, a gap is set between the boss and the circular hole to prevent the optical film from bending abnormally due to thermal expansion and contraction. However, the optical film can move freely within a certain range and is easy to break away from the fixed frame, resulting in a decrease in the fixing frame's ability to limit the optical film.

[0038] On this basis, the present invention provides an optical film fixing assembly, comprising: an optical film, the optical film having an edge limiting area, the edge limiting area comprising a locking portion and a limiting groove that partially surrounds the locking portion, and the limiting groove passes through the optical film; a fixing frame, the fixing frame having a bearing surface, a protrusion being provided on the bearing surface, and a locking groove being provided on part of the side wall of the protrusion; the protrusion is suitable for being placed in the limiting groove, and the locking portion is suitable for being embedded in the locking slot; when the locking portion is embedded in the locking slot, there is a gap between the protrusion and the optical film.

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components; wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] One embodiment of the present invention provides an optical film fixing assembly, please refer to Figures 1 to 10 , including: an optical film 1, the optical film 1 has an edge limiting area 2, the edge limiting area 2 includes a locking portion 202 and a limiting groove 201 partially surrounding the locking portion 202, and the limiting groove 201 passes through the optical film 1; a fixing frame 3, the fixing frame 3 has a bearing surface, a protrusion 4 is provided on the bearing surface, and a part of the side wall of the protrusion 4 is provided with a locking groove 5; the protrusion 4 is suitable for being placed in the limiting groove 201, and the locking portion 202 is suitable for being embedded in the locking groove 5; when the locking portion 202 is embedded in the locking groove 5, there is a gap between the protrusion 4 and the optical film 1.

[0044] The width of the gap is 0.1mm to 5mm, for example, 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm or 5mm.

[0045] On the light-emitting surface parallel to the optical film 1, the limiting groove 201 includes a first limiting sub-groove 2011, a second limiting sub-groove 2012 and a third limiting sub-groove 2013 which are connected in series and interconnected. The first limiting sub-groove 2011 and the third limiting sub-groove 2013 are arranged opposite to each other, and the second limiting sub-groove 2012 is located on the same side of the first limiting sub-groove 2011 and the third limiting member.

[0046] Please refer to Figure 2 Preferably, the second limiting sub-groove 2012 is located on the side of the first limiting sub-groove 2011 and the third limiting sub-groove 2013 facing away from the outer edge of the optical film 1. The first limiting sub-groove 2011, the second limiting sub-groove 2012, and the third limiting sub-groove 2013 form a U-shaped groove. Since light can pass through the limiting groove 201, locating the second limiting sub-groove 2012 on the side of the U-shaped groove away from the outer edge of the optical film 1 can reduce edge light leakage when the display panel is viewed from the side, which helps reduce the size of the display panel's frame.

[0047] like Figure 2The width a of the first limiting sub-groove 2011 is 2 mm to 6 mm, for example, 2 mm, 3 mm, 4 mm, 5 mm or 6 mm; Figure 2 The length b of the third limiting sub-groove 2013 is 6 mm to 10 mm, for example, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm.

[0048] The length of the first limiting sub-slot 2011 is 6 mm to 10 mm, for example, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. The width of the third limiting sub-slot 2013 is 2 mm to 6 mm, for example, 2 mm, 3 mm, 4 mm, 5 mm, or 6 mm.

[0049] In a specific embodiment, the length of the first limiting sub-groove 2011 is equal to the length of the third limiting sub-groove 2013 , and the width of the first limiting sub-groove 2011 is equal to the width of the third limiting sub-groove 2013 .

[0050] In other embodiments, the shape of the third limiting sub-groove 2013 may be different from that of the second limiting sub-groove 2012. The length of the first limiting sub-groove 2011 is different from that of the third limiting sub-groove 2013, and the width of the first limiting sub-groove 2011 is different from that of the third limiting sub-groove 2013.

[0051] like Figure 2 , the width c of the second limiting sub-groove 2012 is 1 mm to 5 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm; Figure 2 The length d of the second limiting sub-groove 2012 is 10 mm to 20 mm, for example, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm or 20 mm.

[0052] Please continue to refer to Figure 2 The edges of the first limiting sub-groove 2011, the second limiting sub-groove 2012, and the third limiting sub-groove 2013 are arc-shaped, which can prevent the optical film 1 from being abraded due to thermal expansion and contraction, or when the optical film fixing assembly structure moves relative to the fixing frame 3 during transportation, assembly, vibration testing, etc.

[0053] Please continue to refer to Figure 2 The angle between the extension direction of the first limiting sub-groove 2011 and the extension direction of the second limiting sub-groove 2012 is 75°~105°, for example, 75°, 80°, 85°, 90°, 95°, 100° or 105°, preferably 90°; the angle between the extension direction of the third limiting sub-groove 2013 and the extension direction of the second limiting sub-groove 2012 is 75°~105°, for example, 75°, 80°, 85°, 90°, 95°, 100° or 105°, preferably 90°.

[0054] The optical film 1 has a plurality of spaced edge limiting areas 2, which surround the central area of ​​the optical film 1. Preferably, the plurality of edge limiting areas 2 are spaced apart in the relative long side directions of the optical film 1. During use, the locking portion 202 on one side of the optical film 1 is first inserted into the card slot 5. Since there is a gap between the protruding member 4 and the optical film 1, the locking portion 202 has a certain amount of movement space in the card slot 5. After moving the optical film 1 to a certain position, the locking portion 202 on the other side of the optical film 1 is inserted into the card slot 5, and the position of the optical film 1 is slightly adjusted to ensure a gap between the protruding member 4 and the optical film 1. In other embodiments, the plurality of edge limiting areas 2 are spaced apart in the relative short side directions of the optical film 1, or the plurality of edge limiting areas 2 are spaced apart on the four sides of the optical film 1. The reasonable arrangement can be made according to the actual use.

[0055] Please refer to Figure 2 The distance f between adjacent edge limiting areas 2 is 20 mm to 60 mm, for example, 20 mm, 30 mm, 40 mm, 50 mm or 60 mm.

[0056] Please refer to Figure 8 and Figure 10 The protruding member 4 includes a first side layer 401 and a second side layer 402 that are opposite to each other, and a top layer 404 that is connected to the first and second side layers 401, 402 and disposed opposite the supporting surface. The latching slot 5 is located between the first and second side layers 401, 402 and at the bottom of the top layer 404. The first side layer 401 is adapted to extend into the first limiting sub-groove 2011, and the second side layer 402 is adapted to extend into the second limiting sub-groove 2012.

[0057] In this embodiment, the fixing frame below the card slot has an opening that passes through the fixing frame, and the protrusion 4 can be formed by a metal back plate through a stamping process, which is simple and has high production efficiency.

[0058] In other embodiments, the fixing frame below the card slot is a solid structure, and the card slot is located between the first side layer and the second side layer and between the top layer and the bearing surface.

[0059] In this embodiment, the protruding member 4 further has a third side layer 403 , which is connected to the first side layer 401 , the second side layer 402 and the top layer 404 . The third side layer 403 is located at the bottom of the slot 5 .

[0060] In other embodiments, the slot passes through the protrusion along a first direction, the first direction is parallel to the light-emitting surface of the optical film, and the first direction is perpendicular to the arrangement direction from the first side layer to the second side layer.

[0061] like Figure 4As shown, the gaps include: a first gap M between the outer side wall of the protrusion 4 and the optical film 1 outside the protrusion 4; a second gap N between the inner side walls of the first side layer 401, the second side layer 402, and the third side layer 403 and the embedded portion 202; and a third gap between the top layer 404 and the embedded portion 202.

[0062] There is a first gap M between the outer wall of the protrusion 4 and the optical film 1 outside the protrusion 4, including: a first sub-gap between the outer wall of the first side layer 401 and the optical film 1 outside the first side layer 401; a second sub-gap between the outer wall of the second side layer 402 and the optical film 1 outside the second side layer 402; and a third sub-gap between the outer wall of the third side layer 403 and the optical film 1 outside the third side layer 403.

[0063] The second gap N located between the inner side walls of the first side layer 401, the second side layer 402, and the third side layer 403 and the embedded portion 202 includes: a fourth sub-gap located between the inner side wall of the first side layer 401 and the embedded portion 202; a fifth sub-gap located between the inner side wall of the second side layer 402 and the embedded portion 202; and a sixth sub-gap located between the inner side wall of the third side layer 403 and the embedded portion 202.

[0064] Figure 4 The size shown in “g1” represents the width of the first sub-gap; the size shown in “g2” represents the width of the second sub-gap; the size shown in “g3” represents the width of the third sub-gap; the size shown in “g4” represents the width of the fourth sub-gap; the size shown in “g5” represents the width of the fifth sub-gap; and the size shown in “g6” represents the width of the sixth sub-gap.

[0065] Figure 6 The dimension shown as "g" in the figure represents the third gap width dimension.

[0066] The width of the gap is 0.1mm to 5mm, for example, 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm or 5mm.

[0067] Please refer to Figure 9 The central area of ​​the fixing frame 3 has a receiving groove 6; the opening of the receiving groove 6 faces the bearing surface; when the optical film fixing assembly is used for an LCD display 7 or an ELED display 7, the receiving groove 6 is suitable for placing a reflective film, a light guide plate and a side light source, or when the optical film fixing assembly is used for a DLED display 7, the receiving groove 6 is suitable for placing a light source.

[0068] It should be noted that the optical film 1 includes a lower diffusion film, a prism film and an upper diffusion film; the fixed frame 3 in this embodiment can be formed by a metal back plate through a stamping process, avoiding the shortcomings of the existing technology of forming fixing holes through off-line processing, which has high cost, waste of labor, low efficiency and high defective products.

[0069] In the optical film fixing assembly provided in this embodiment, a gap exists between the protruding member 4 and the optical film 1 when the engaging portion 202 is inserted into the slot 5. Therefore, when the optical film 1 deforms due to thermal expansion and contraction caused by environmental influences, the gap provides space for horizontal deformation of the optical film 1, preventing the optical film 1 from bending or wrinkling. Furthermore, because the engaging slot 5 is defined on a portion of the sidewall of the protruding member 4, the engaging portion 202 of the optical film 1 is adapted to fit within the slot 5. When the engaging portion 202 is inserted into the slot 5, the slot 5 effectively restricts the position of the engaging portion 202, preventing it from disengaging from the slot 5. This prevents the optical film 1 from disengaging from the fixing frame 3, and improves the fixing frame's ability to retain the optical film.

[0070] This embodiment also provides a display panel, referring to Figure 11 , including the optical film fixing assembly and display 7 provided in the above embodiment. Since a gap exists between the protruding member 4 and the optical film 1 when the locking portion 202 is inserted into the locking slot 5, when the optical film 1 is deformed due to thermal expansion and contraction caused by environmental influences, the gap provides the optical film 1 with space for deformation in the horizontal direction, thereby preventing the optical film 1 from being blocked by the fixing frame 3 and unable to deform smoothly, thereby causing the optical film 1 to bend or wrinkle abnormally; at the same time, since the locking slot 5 is opened on a part of the side wall of the protruding member 4, the locking portion 202 of the optical film 1 is suitable for being inserted into the locking slot 5. The locking slot 5 is opened on a part of the side wall of the protruding member 4. When the locking portion 202 is inserted into the locking slot 5, the locking slot 5 can effectively limit the position of the locking portion 202, preventing the locking portion 202 from being separated from the locking slot 5. In this way, the optical film 1 is prevented from being separated from the fixing frame 3, and the fixing frame has a better limiting ability for the optical film.

[0071] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An optical film fixing assembly, characterized in that: include: An optical film, wherein the optical film has an edge limiting area, the edge limiting area includes a locking portion and a limiting groove that partially surrounds the locking portion, and the limiting groove runs through the optical film; the limiting groove includes a first limiting sub-groove, a second limiting sub-groove, and a third limiting sub-groove that are sequentially connected in series and interconnected, the first limiting sub-groove, the second limiting sub-groove, and the third limiting sub-groove forming a U-shaped groove, and the second limiting sub-groove is located on a side of the U-shaped groove away from the outer edge of the optical film; the angle between the extension direction of the first limiting sub-groove and the extension direction of the second limiting sub-groove is 75° to 105°, and the angle between the extension direction of the third limiting sub-groove and the extension direction of the second limiting sub-groove is 75° to 105°; A fixed frame, the fixed frame having a bearing surface, a protrusion provided on the bearing surface, and a slot provided on a portion of a side wall of the protrusion; The protrusion is suitable for being placed in the limiting groove, and the locking portion is suitable for being embedded in the locking groove; When the locking portion is inserted into the locking slot, a gap is formed between the protruding member and the optical film, and the width of the gap is 0.1 mm to 5 mm; The locking portion distributed on one side of the optical film is suitable for being first inserted into the slot during use, and the locking portion on the other side of the optical film opposite to the one side is suitable for being inserted into the slot after moving to a certain position.

2. The optical film fixing assembly according to claim 1, wherein: The first limiting sub-groove and the third limiting sub-groove are arranged opposite to each other, and the second limiting sub-groove is located on the same side of the first limiting sub-groove and the third limiting member; The protrusion comprises a first side layer and a second side layer opposite to each other, and a top layer connected to the first side layer and the second side layer and arranged opposite to the bearing surface; The card slot is located between the first side layer and the second side layer and at the bottom of the top layer; The first side layer is adapted to extend into the first limiting sub-groove, and the second side layer is adapted to extend into the second limiting sub-groove.

3. The optical film fixing assembly according to claim 2, wherein: The fixing frame below the card slot is provided with an opening penetrating the fixing frame; Alternatively, the fixing frame below the card slot is a solid structure, and the card slot is located between the first side layer and the second side layer and between the top layer and the bearing surface.

4. The optical film fixing assembly according to claim 2, wherein: The card slot passes through the protrusion along a first direction, the first direction is parallel to the light-emitting surface of the optical film, and the first direction is perpendicular to the arrangement direction from the first side layer to the second side layer.

5. The optical film fixing assembly according to claim 2, wherein: The protruding part further has a third side layer, which is connected to the first side layer, the second side layer and the top layer, and is located at the bottom of the card slot.

6. The optical film fixing assembly according to claim 2, wherein: The second limiting sub-groove is located on a side of the first limiting sub-groove and the third limiting sub-groove facing away from an outer edge of the optical film.

7. The optical film fixing assembly according to claim 2, wherein: The width of the first limiting sub-groove is 2 mm to 6 mm, and the length of the first limiting sub-groove is 6 mm to 10 mm; The width of the second limiting sub-groove is 1 mm to 5 mm, and the length of the second limiting sub-groove is 10 mm to 20 mm; The width of the third limiting sub-groove is 2mm to 6mm, and the length of the third limiting sub-groove is 6mm to 10mm.

8. The optical film fixing assembly according to claim 2, wherein: The edges of the first limiting sub-groove, the second limiting sub-groove and the third limiting sub-groove are arc-shaped.

9. The optical film fixing assembly according to claim 5, wherein: The gaps include: a first gap between the outer side wall of the convex part and the optical film outside the convex part; a second gap between the inner side walls of the first side layer, the second side layer, and the third side layer and the embedded part; and a third gap between the top layer and the embedded part.

10. The optical film fixing assembly according to claim 1, wherein: The optical film has a plurality of spaced edge limiting areas, and the plurality of spaced edge limiting areas surround the central area of ​​the optical film.

11. The optical film fixing assembly according to claim 10, wherein: The distance between adjacent edge limiting areas is 20 mm to 60 mm.

12. The optical film fixing assembly according to claim 1, wherein: The central area of ​​the fixing frame has a receiving groove; the opening of the receiving groove faces the bearing surface; the receiving groove is suitable for placing a light guide plate and a side light source, or the receiving groove is suitable for placing a light source.

13. A display panel, characterized in that: The optical film fixing assembly comprises the optical film fixing assembly according to any one of claims 1 to 12.

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