Backlight module and display device

Abstract

The present application belongs to the field of display, and specifically relates to a backlight module and a display device, wherein the backlight module includes a backplane structure, a frame, and an optical film arranged in the frame and supported on the backplane structure, and the backlight module also includes: a pressing plate, the pressing plate includes a connected limiting portion and a mounting portion, the mounting portion is detachably connected to the frame, and the limiting portion is arranged on the light-emitting side of the optical film. In the present application, the pressing plate includes a connected limiting portion and a mounting portion, the mounting portion is detachably connected to the frame, the limiting portion is arranged on the light-emitting side of the optical film, and serves as the upper limit of the optical film. The backplane structure can serve as the lower limit structure of the optical film. By limiting the upper and lower limits of the optical film, the optical film and the display panel are kept at a certain optical distance. Compared with the solution of adding ears to fix the optical film so that it maintains a certain optical distance with the display panel, the raw materials for making the optical film are saved and the production cost is reduced.

Description

Technical Field

[0001] The present application belongs to the field of display, and specifically relates to a backlight module and a display device. Background Art

[0002] At present, ears are added to the optical film of the backlight module. The ears and the frame of the backlight module are fixed by tape to keep a certain optical distance between the optical film and the display panel on the light-emitting side of the optical film. The ears are the protruding parts of the optical film. Adding ears causes waste of raw materials for cutting and making the optical film, which in turn leads to increased production costs. Summary of the invention

[0003] The purpose of the present application is to provide a backlight module and a display device to save raw materials for making a diaphragm.

[0004] In order to achieve the above object, the present application provides a display panel including a backplane structure, a frame, and an optical film arranged in the frame and supported on the backplane structure, and the backlight module also includes:

[0005] A pressing sheet, the pressing sheet comprises a limit portion and a mounting portion connected to each other, the mounting portion is detachably connected to the frame, and the limit portion is arranged on the light emitting side of the optical film.

[0006] Optionally, a slot is provided on a side of the frame close to the optical film, and the mounting portion is provided in the slot.

[0007] Optionally, a magnet is embedded in the frame, and at least the mounting portion in the pressing sheet is a magnetic structural component, and there is a magnetic adsorption force between the mounting portion and the magnet.

[0008] Optionally, the frame includes a supporting top surface for supporting a display panel located on the light-emitting side of the optical film, and an insertion port is formed in a local area of ​​the supporting top surface, and the insertion port is communicated with the slot;

[0009] Wherein, a limiting column is arranged in the slot, and the mounting portion is provided with a socket adapted to the limiting column.

[0010] Optionally, the socket is rectangular, and the shape of the corresponding limiting column is adapted to the shape of the socket.

[0011] Optionally, the magnet is located on a side of the slot away from the supporting top surface, and the magnet is spaced apart from the bottom of the slot in the light emitting direction;

[0012] Wherein, in the orthographic projection obtained in the light emitting direction, at least a part of the magnet does not overlap with the limiting post.

[0013] Optionally, in the light emitting direction, the thickness of the mounting portion is less than or equal to the depth of the slot.

[0014] Optionally, the surface of the optical film away from the back plate structure is closer to the back plate structure than the supporting top surface.

[0015] Optionally, the pressing sheet further includes a connecting portion, which connects the limiting portion and the mounting portion, and the distance between the limiting portion close to the optical film and the supporting top surface is greater than the distance between the mounting portion close to the optical film and the supporting top surface.

[0016] The present application also provides a display device, comprising:

[0017] The backlight module described in any one of the above;

[0018] The display panel is arranged on the light-emitting side of the backlight module.

[0019] The backlight module and display device disclosed in this application have the following beneficial effects:

[0020] In the present application, the pressing sheet includes a limit portion and a mounting portion that are connected to each other. The mounting portion is detachably connected to the frame to facilitate the disassembly and assembly of the pressing sheet. The limit portion is arranged on the light-emitting side of the optical film as the upper limit of the optical film. The back panel structure can be used as the lower limit structure of the optical film. By limiting the upper and lower positions of the optical film, the optical film and the display panel maintain a certain optical distance. Compared with the solution of adding ears to fix the optical film so that the optical film and the display panel maintain a certain optical distance, the raw materials for making the optical film are saved and the production cost is reduced.

[0021] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a schematic diagram of the structure of the backlight module in the first embodiment of the present application;

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of the pressing part of the backlight module;

[0026] Figure 3 yes Figure 1 A schematic cross-sectional view of the frame of the backlight module;

[0027] Figure 4 yes Figure 3 A schematic top view of the frame of the backlight module;

[0028] Figure 5 yes Figure 1 A schematic diagram of the structure of the pressing sheet of the backlight module;

[0029] Figure 6 is a schematic diagram of the structure of the backlight module when the insertion port is inverted in the first embodiment of the present application;

[0030] Figure 7 It is a schematic diagram of the structure of the display device in the second embodiment of the present application.

[0031] Description of reference numerals:

[0032] 100. Backlight module

[0033] 110, frame; 111, slot; 112, support top surface; 113, insertion port; 114, limit column;

[0034] 120, pressing piece; 121, mounting portion; 122, connecting portion; 123, limiting portion; 124, jack;

[0035] 130. Magnet;

[0036] 140. Optical film;

[0037] 150. Light source assembly;

[0038] 160. Back plate structure;

[0039] 200. Display panel. DETAILED DESCRIPTION

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0041] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0042] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0043] Embodiment 1

[0044] Figure 1 is a schematic diagram of the structure of the backlight module in the first embodiment of the present application, Figure 2 yes Figure 1 A schematic diagram of the structure of the pressing part of the backlight module, such as Figure 1 and Figure 2 As shown, the backlight module provided in the present application includes a frame 110 , a pressing sheet 120 , an optical film 140 , a light source assembly 150 and a back panel structure 160 .

[0045] The frame 110 has an inner side and an outer side opposite to each other. The inner side of the frame 110 is convex inward to form a step surface, which is a support top surface 112 for supporting a display panel located on the light-emitting side of the optical film 140. That is, when the backlight module is used for a display device, the display panel of the display device is installed in the frame 110, and the light-incident surface of the display panel contacts the support top surface 112. The frame 110 can be used to support the display panel, and it at least surrounds two opposite sides of the display panel.

[0046] The optical film 140 is disposed in the frame 110 and located at the light incident side of the display panel. The optical film 140 may include a light homogenizing sheet, a prism sheet, a diffusion sheet, and a reflection sheet, but is not limited thereto, and it depends on the specific situation.

[0047] like Figure 1 and Figure 2As shown, the light source assembly 150 can be arranged on the light incident side of the optical film 140. In other words, the light source assembly 150 and the optical film 140 are opposite in the light emitting direction, and this light emitting direction can be understood as the direction of the plane where the vertical support top surface 112 is located; and at least part of the back plate structure 160 is arranged on the side of the light source assembly 150 away from the optical film 140, that is, a direct-type backlight structure, but not limited to this. In some embodiments, a light guide plate (not shown) can also be arranged on the light incident side of the optical film 140, and the back plate structure 160 is arranged on the side of the light guide plate away from the optical film 140, and the light source assembly 150 is arranged on one side wall or both side walls of the light guide plate, that is, a side-entry backlight structure, depending on the specific situation.

[0048] The light source assembly 150 may include an LED (light emitting diode) light source, but is not limited thereto, and may be a Mini / Micro LED, depending on the specific situation. The size of a Mini LED light source is 50 microns to 200 microns, and the gap between two adjacent light sources is 0.3 mm to 1.2 mm. The size of a Micro LED light source is less than 50 microns, and the gap between two adjacent light sources is less than 0.3 mm.

[0049] The Mini LED / Micro LED light source is small in size, the gap between the light sources 120 is small, and the number of light sources integrated in the light source assembly 150 is large, so it can be divided into more fine backlight partitions. On this basis, the brightness of the light source in a small area can be controlled separately to achieve bright enough where it should be bright and dark where it should be dark, and the limitations of the picture performance are smaller. When a part of the picture needs to be displayed in black, the small backlight partition of this part can be dimmed or even turned off to obtain a purer black, greatly improving the contrast, and can have a contrast close to that of an OLED (Organic Electroluminescence Display, organic light-emitting semiconductor) screen. Display devices using Mini / Micro LED light sources also have the advantages of long life and not easy to burn in. After large-scale mass production, the cost will be lower than that of OLED screens.

[0050] When the light source assembly 150 is disposed on the light incident side of the optical film 140, the back panel structure 160 supports the light source assembly 150, and the light source assembly 150 itself can serve as the lower limiting structure of the optical film 140; when the light guide plate is disposed on the light incident side of the optical film 140, the back panel structure 160 supports the light guide plate, and the light guide plate can serve as the lower limiting structure of the optical film 140.

[0051] Figure 5 yes Figure 1 Schematic diagram of the structure of the backlight module, combined with Figure 1 , Figure 2 and Figure 5As shown, the pressing sheet 120 includes a limit portion 123 and a mounting portion 121 which are connected to each other, and the mounting portion 121 is detachably connected to the frame 110; the limit portion 123 is arranged on the light-emitting side of the optical film 140, and the limit portion 123 can support the optical film 140 and serve as an upper limit structure of the optical film 140, so that the optical film 140 and the display panel maintain a certain optical distance.

[0052] The length of the limiter 123 extending to the inner side of the frame 110 is set according to the size of the optical film 140 and the display panel. The display panel includes a display area and a non-display area, and the orthographic projection of the limiter 123 on the light-emitting side is located in the non-display area. The size of the optical film 140 is larger than the size of the display area of ​​the display panel.

[0053] It should be noted that the frame 110 at least surrounds two opposite sides of the display panel, and the corresponding pressing sheets 120 are at least arranged on two opposite sides of the frame 110. The two opposite sides of the optical film 140 are respectively limited by two pressing sheets 120, so that the optical film 140 and the display panel maintain a certain optical distance.

[0054] For example, when the size of the optical film 140 is relatively large, the frame 110 can be designed as a door-shaped structure to surround the three side walls of the display panel. At least one pressing sheet 120 can be provided on each side of the frame 110 to prevent the middle of the optical film 140 from bulging toward the light-emitting side, resulting in different optical distances between different parts of the optical film 140 and the display panel, thereby affecting the display quality.

[0055] In the present application, the pressing sheet 120 includes a limit portion 123 and an installation portion 121 connected to each other. The installation portion 121 is detachably connected to the frame 110 to facilitate the disassembly and assembly of the pressing sheet 120. The limit portion 123 is arranged on the light-emitting side of the optical film 140 as the upper limit of the optical film 140. The back panel structure 160 can be used as the lower limit structure of the optical film 140. By limiting the upper and lower positions of the optical film 140, the optical film 140 and the display panel maintain a certain optical distance. Compared with the solution of adding ears to fix the optical film 140 to maintain a certain optical distance between the optical film 140 and the display panel, the raw materials for making the optical film 140 are saved and the production cost is reduced.

[0056] In addition, the assembly of the optical film 140 is a relatively cumbersome part of the backlight module production process. The optical film 140 may be damaged during the assembly process, and it is necessary to rework and replace the optical film 140. In the present application, the optical film 140 is limited by the limiter 123, and there is no fixed connection between the two. Compared with the solution of adding ears to the optical film 140 and bonding the ears and the frame 110 with tape to fix the optical film 140, it is more convenient to replace the optical film 140.

[0057] Figure 2 yes Figure 1 Schematic diagram of the structure of the pressing part of the backlight module. Figure 3 yes Figure 1 A cross-sectional view of the frame of the backlight module, Figure 4 yes Figure 3 A top view of the frame of the backlight module is shown in FIG. Figures 1 to 5 As shown, a slot 111 is provided on one side of the frame 110 close to the optical film 140 , that is, a slot 111 is provided on the inner side of the frame 110 , and the mounting portion 121 is provided in the slot 111 , and the two are detachably connected.

[0058] It should be noted that the mounting portion 121 and the slot 111 can be connected in a variety of ways. For example, adhesive is provided on at least one of the mounting portion 121 and the slot 111 to bond the mounting portion 121 and the slot 111; or a buckle is provided between the mounting portion 121 and the slot 111 to detachably connect the mounting portion 121 and the slot 111 through the buckle; or the mounting portion 121 and the slot 111 are connected by interference fit, depending on the specific situation.

[0059] The mounting portion 121 is arranged in the slot 111 to achieve a detachable connection between the mounting portion 121 and the frame 110 , while reducing the shaking of the limiting portion 123 of the cantilever structure, thereby preventing the limiting portion 123 from shaking and scratching the optical film 140 or causing wrinkles in the optical film 140 .

[0060] In this embodiment, a magnet 130 is embedded in the frame 110, and at least the mounting portion 121 in the pressing sheet 120 is a magnetic structural component, such as an iron structural component. There is a magnetic adsorption force between the mounting portion 121 and the magnet 130, and the frame 110 and the mounting portion 121 can be magnetically connected through the magnet 130.

[0061] It should be understood that the magnet 130 is embedded in the frame 110, and can be located on the side of the mounting portion 121 close to the optical film 140, or on the side of the mounting portion 121 away from the optical film 140, but is not limited thereto, and can also be located on the side of the mounting portion 121 away from the limiting portion 123, depending on the specific situation. The pressing sheet 120 can also be designed as an integrated structure, that is, the pressing sheet 120 is a magnetic structural member as a whole, and such a design can reduce the difficulty of manufacturing and improve the overall strength.

[0062] The frame 110 and the mounting portion 121 are magnetically connected through the magnet 130, the pressing sheet 120 is easy to disassemble and assemble, and the magnet 130 magnetically attracts the mounting portion 121, so that the mounting portion 121 can be close to the side of the slot 111 to prevent the mounting portion 121 from shaking in the slot 111, thereby reducing the relative movement between the limiting portion 123 and the optical film 140, and preventing the limiting portion 123 from shaking and scratching the optical film 140 or causing wrinkles on the optical film 140.

[0063] The frame 110 may include engineering plastics, but is not limited thereto, and may also be made of metal or rubber, etc. The frame 110 is made of engineering plastics, and the plastic frame 110 may be injection molded, which facilitates embedding of the magnet 130 .

[0064] In this embodiment, an insertion port 113 is formed in a local area of ​​the support top surface 112, and the insertion port 113 is connected to the slot 111. The inner side surface of the frame 110 is provided with a hole for accommodating the mounting portion 121. The insertion port 113 and the hole for accommodating the mounting portion 121 on the inner side surface of the frame 110 are connected, that is, the slot 111 has a gap on the side close to the limiting portion 123 and the side close to the display panel. The bottom surface of the slot 111 (i.e., the side away from the support top surface 112) is provided with a limiting column 114, and the mounting portion 121 is provided with a plug hole 124 adapted to the limiting column 114. The magnet 130 is located on the side of the slot 111 away from the support top surface 112. The mounting portion 121 of the pressing sheet 120 can be installed in the slot 111 through the insertion port 113, and is sleeved on the limiting column 114 through the plug hole 124. After the display panel is installed, it covers the insertion opening 113 . The display panel itself serves as an upper limit structure of the installation portion 121 , thereby limiting the installation portion 121 in the slot 111 .

[0065] The mounting portion 121 is sleeved on the limiting column 114 through the insertion hole 124, which can prevent the mounting portion 121 from sliding toward the inner side of the frame 110. The display panel is arranged on the support top surface 112, covering the insertion port 113, which can prevent the mounting portion 121 from sliding toward the light-emitting side. The magnet 130 is arranged on the side of the slot 111 close to the optical film 140, and the mounting portion 121 is adsorbed by the magnet 130 on the side of the slot 111 close to the optical film 140, which prevents the mounting portion 121 from moving in the extension direction of the limiting column 114, thereby reducing the relative movement between the limiting portion 123 and the optical film 140, and preventing the limiting portion 123 from shaking and scratching the optical film 140 or causing the optical film 140 to wrinkle.

[0066] It should be noted that the insertion port 113 is not limited to being located on the support top surface 112 . Figure 6 Schematic diagram of the structure of the backlight module when the insertion port is inverted in the first embodiment of the present application. Figure 6As shown, the inner side of the frame 110 may bulge inward to form a protrusion, and the protrusion has a step surface close to the display panel (i.e., the supporting top surface 112) and a step surface away from the display panel, and the insertion port 113 may also be provided on the step surface away from the display panel. Accordingly, a limiting column 114 is provided on the side of the slot 111 away from the optical film 140, the mounting portion 121 is sleeved on the limiting column 114 through the insertion hole 124, and the magnet 130 is provided on the side of the slot 111 away from the optical film 140. At this time, the insertion port 113 may be covered by the light source assembly 150 or the back plate structure 160, and the light source assembly 150 or the back plate structure 160 serves as the lower limiting structure of the mounting portion 121, and the mounting portion 121 is limited in the slot 111.

[0067] In addition, the method of limiting the mounting portion 121 from sliding toward the inner side of the frame 110 is not limited to using the limiting column 114, and the limiting may also be performed by the shape of the mounting portion 121. For example, the slot 111 is designed as a T-slot or a dovetail slot, and the slot 111 is located at the inner side of the frame 110 smaller than the slot 111 is located at the outer side of the frame 110, and the mounting portion 121 is designed to be T-shaped or dovetail-shaped accordingly.

[0068] like Figure 4 and Figure 5 As shown, the socket 124 is rectangular, and the shape of the corresponding limiting column 114 is adapted to the shape of the socket 124, that is, the whole can be a rectangular columnar structure, and the size of the socket 124 is adapted to the cross-sectional size of the limiting column 114, so as to prevent the mounting portion 121 from being sleeved on the limiting column 114 through the socket 124 and shaking in the circumferential direction of the limiting column 114.

[0069] By designing the limiting column 114 as a rectangular column and the corresponding insertion hole 124 as a rectangular hole, the installation part 121 can be prevented from being set on the limiting column 114 through the insertion hole 124 and shaking in the circumferential direction of the limiting column 114, thereby reducing the relative movement between the limiting part 123 and the optical film 140, and preventing the limiting part 123 from shaking and scratching the optical film 140 or causing wrinkles in the optical film 140. The circumferential limit is performed by the shape of the limiting column 114 and the insertion hole 124, and the size of the slot 111 can be larger than the size of the installation part 121, which is convenient for installing the pressing sheet 120.

[0070] It should be understood that the mounting portion 121 is sleeved on the limiting column 114 through the insertion hole 124, and the limiting column 114 is not limited to limiting in the circumferential direction by the shape of the insertion hole 124 and the limiting column 114. The limiting column 114 can also be designed as a cylinder and at least two limiting columns 114 are arranged on the side of the slot 111 close to the optical film 140, and at least two insertion holes 124 are arranged on the corresponding mounting portion 121, and circumferential limiting is performed by at least two limiting columns 114.

[0071] like Figure 2As shown, the magnet 130 is located on a side of the slot 111 away from the supporting top surface 112 , and the magnet 130 and the bottom surface of the slot 111 are spaced apart in the light emitting direction, that is, the magnet 130 is completely buried inside the frame 110 .

[0072] The magnet 130 is completely buried inside the frame 110 to prevent the magnet 130 from falling off from the frame 110 when the pressing sheet 120 is disassembled. The interval between the magnet 130 and the slot 111 can be set according to the magnetic attraction between the magnet 130 and the mounting portion 121, that is, the magnetic attraction between the magnet 130 and the mounting portion 121 can be made as large as possible to prevent the mounting portion 121 from shaking in the slot 111 while ensuring that the magnet 130 does not fall off.

[0073] In the orthographic projection obtained in the light emitting direction, at least a portion of the magnet 130 does not overlap with the limiting post 114 .

[0074] Specifically, the size and position of the magnet 130 are set according to the position of the limiting column 114. For example, when the limiting column 114 is a rectangular column, the magnet 130 can be circular or annular, and the positive projection of the limiting column 114 in the light emitting direction is located within the region of the magnet 130, and the magnet 130 is arranged in the center relative to the limiting column 114 to prevent the mounting portion 121 from tilting due to the unilateral magnetic attraction, thereby causing the position of the limiting portion 123 to shift, resulting in a deviation in the optical distance between the optical film 140 and the display panel, affecting the display effect.

[0075] It should be understood that when the size of the magnet 130 is large enough, if the positive projection of the mounting portion 121 in the light incident direction is located inside the magnet 130, the mounting portion 121 and the slot 111 can be fitted close to the side of the optical film 140 to prevent the mounting portion 121 from being lifted up by the unilateral magnetic attraction. The number of magnets 130 can also be set to multiple, multiple magnets 130 are evenly arranged around the limit column 114, or the projections of multiple magnets 130 to the light emitting side are evenly distributed on the mounting portion 121.

[0076] like Figure 2 As shown, in the light emitting direction, the thickness of the pressing sheet 120 is less than the depth of the slot 111 , but the invention is not limited thereto, and the thickness of the pressing sheet 120 may also be equal to the depth of the slot 111 .

[0077] The thickness of the pressing sheet 120 is smaller than the depth of the slot 111 , which can prevent the upper surface of the pressing sheet 120 from protruding from the supporting top surface 112 , causing the display panel to fail to be installed in place.

[0078] like Figure 2As shown, the surface of the optical film 140 away from the back plate structure 160 is closer to the back plate structure 160 than the support top surface 112. That is, the support top surface 112 is located on the light-emitting side of the optical film 140, and the optical film 140 and the support top surface 112 are spaced apart. After the display panel is installed, the optical distance between the display panel and the optical film 140 is greater than 0.

[0079] The optical film 140 and the supporting top surface 112 are spaced apart, and the optical distance between the display panel and the optical film 140 is greater than 0. The air layer between the display panel and the optical film 140 can even out and mix the light, and the display effect of the display panel is better.

[0080] The pressing sheet 120 includes a limit portion 123 and a mounting portion 121 connected to each other. That is, when the pressing sheet 120 is a flat structure, the optical distance between the display panel and the optical film 140 needs to be adjusted by the thickness of the pressing sheet 120 and the depth of the slot 111 in the light incident direction.

[0081] like Figure 2 and Figure 5 As shown, the pressing sheet 120 further includes a connecting portion 122, the connecting portion 122 connects the limiting portion 123 and the mounting portion 121, and the distance between the limiting portion 123 close to the side of the optical film 140 and the supporting top surface 112 (i.e. Figure 2 H2) is greater than the distance between the mounting portion 121 close to the optical film 140 and the supporting top surface 112 (i.e. Figure 2 H1), that is, the pressing sheet 120 is not a flat structure, but the limiting portion 123 is bent toward the light emitting side to form a "Z"-shaped structure.

[0082] The optical distance between the display panel and the optical film 140 can be adjusted by adjusting the position of the limiting portion 123 of the connecting portion 122 in the light incident direction.

[0083] Embodiment 2

[0084] Figure 7 is a schematic diagram of the structure of the display device in the second embodiment of the present application. Figure 2 and Figure 7 As shown, the display device provided in this embodiment includes: a backlight module 100 and a display panel 200, the backlight module 100 includes the backlight module 100 disclosed in the first embodiment, and the display panel 200 includes a liquid crystal display panel (i.e., LCD). The frame 110 of the backlight module 100 has an inner side and an outer side opposite to each other, the inner side of the frame 110 bulges inward to form a step surface, and the step surface is a support top surface 112, the display panel 200 is arranged on the light-emitting side of the backlight module 100, and the light-incoming side of the display panel 200 contacts the support top surface 112.

[0085] It should be noted that, in addition to the display panel 200 and the backlight module 100, the display device also includes other necessary components and components. Taking the display as an example, it may also include a casing, a main circuit board, a power cord, etc. Those skilled in the art may make corresponding supplements based on the specific use requirements of the display device, which will not be repeated here.

[0086] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0087] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0088] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A backlight module, comprising a back plate structure, a frame, and an optical film arranged in the frame and supported on the back plate structure, It is characterized in that The backlight module also includes: A pressing sheet, the pressing sheet comprising a limit portion and a mounting portion connected to each other, the mounting portion being detachably connected to the frame, and the limit portion being arranged on the light emitting side of the optical film; A magnet is embedded in the frame, at least the mounting portion in the pressing sheet is a magnetic structural member, and there is a magnetic adsorption force between the mounting portion and the magnet; A slot is provided on one side of the frame close to the optical film, the mounting portion is arranged in the slot, and in the light emitting direction, the thickness of the mounting portion is less than or equal to the depth of the slot; The frame includes a supporting top surface for supporting a display panel located on the light emitting side of the optical film, and an insertion port is formed in a local area of ​​the supporting top surface, the insertion port is connected to the slot, a limiting column extending along the light emitting direction is arranged in the slot, the mounting portion is provided with a socket adapted to the limiting column, the pressing piece is sleeved on the limiting column through the socket, and the limiting column can limit the axial rotation of the pressing piece around the limiting column.

2. The backlight module according to claim 1, It is characterized in that The plug hole is rectangular, and the shape of the corresponding limiting column is adapted to the shape of the plug hole.

3. The backlight module according to claim 1, It is characterized in that The magnet is located at a side of the slot away from the supporting top surface, and the magnet is spaced apart from the slot bottom in the light emitting direction; Wherein, in the orthographic projection obtained in the light emitting direction, at least a part of the magnet does not overlap with the limiting post.

4. The backlight module according to claim 1, It is characterized in that The surface of the optical film away from the back plate structure is closer to the back plate structure than the supporting top surface.

5. The backlight module according to claim 4, It is characterized in that The pressing sheet also includes a connecting portion, which connects the limiting portion and the mounting portion, and the distance between the limiting portion close to the optical film and the supporting top surface is greater than the distance between the mounting portion close to the optical film and the supporting top surface.

6. A display device, It is characterized in that include: The backlight module according to any one of claims 1 to 5; The display panel is arranged on the light-emitting side of the backlight module.

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