Display device

Abstract

The utility model relates to display equipment, which is provided with a backlight module, and the backlight module comprises a back plate; the optical film is arranged on the back plate; the panel is stacked on the side, away from the back plate, of the optical film; the first sealing piece is arranged between the panel and the optical film, and the first sealing piece is in sealing connection with the panel and the optical film in the circumferential direction, so that an air cavity is defined by the panel, the first sealing piece and the optical film; the air cavity is filled with air with preset air pressure, and the air is configured to support the panel and the optical film so that the panel can be matched with the optical film in a non-contact mode. Therefore, even if the whole machine shakes to transmit force to the panel and the optical film so as to deform the panel and the optical film in the transportation and carrying processes of the display equipment, the panel and the optical film can be effectively prevented from being in contact so as to avoid abrasion caused by relative movement, the poor display problems of black spots, bright lines and the like during display are prevented, and the display quality of the display equipment is improved. And the display effect and the service life of the television are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, and in particular to a display device. BACKGROUND

[0002] A display device is a display tool that displays electronic files on a screen through a specific transmission device and then reflects them to the human eye. It is an important component of computers, televisions, and other electronic devices. It can convert the signals of a computer or other device into images, allowing us to visually view and process information. Display devices can be CRT, LCD, LED, OLED, and other types.

[0003] In a traditional television structure, a direct backlight module is an important component. The direct backlight module generally includes a panel, an optical film, a lamp strip, and the like. The panel is arranged on the upper side of the optical film. Since the panel and the optical film are both soft, when the television is transported, moved, or the like, the shaking of the whole machine will transmit force to the panel and the optical film, causing the panel and the optical film to deform and contact each other. Subsequently, under the further action of the transmitted force, the panel and the optical film will produce relative movement and cause abrasion, resulting in display defects such as black spots and bright lines during display, which affects the display effect and service life of the television. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a display device to solve the problem of abrasion of the panel and the optical film, which affects the display effect and service life.

[0005] The present application provides a display device, which has a backlight module. The backlight module includes:

[0006] a back plate;

[0007] an optical film arranged on the back plate;

[0008] a panel arranged on the side of the optical film away from the back plate; and

[0009] a first sealing member arranged between the panel and the optical film, and the first sealing member is circumferentially sealed and connected with the panel and the optical film, so that an air cavity is formed between the panel, the first sealing member, and the optical film;

[0010] wherein the air cavity is filled with a gas with a preset air pressure, and the gas is configured to support the panel and the optical film, so that the panel and the optical film are in non-contact cooperation.

[0011] The display device of the present application is formed by sequentially assembling a back plate, an optical film, a first sealing member and a panel in design to form a backlight module, wherein the first sealing member is circumferentially connected and sealed between the panel and the optical film, so that the three can form an air cavity, then gas is injected into the air cavity to obtain a preset air pressure, thus the gas with the preset air pressure in the air cavity can support the panel and the optical film, so as to ensure that the panel and the optical film maintain a non-contacting relationship, so that even if the display device shakes during transportation and lifting, the force transmitted to the panel and the optical film can make the panel and the optical film deform, which can effectively avoid the panel and the optical film from contacting and moving relatively to avoid abrasion, prevent display defects such as black spots and bright lines during display, and ensure the display effect and service life of the television.

[0012] The technical solutions of the present application are further described as follows:

[0013] In one embodiment, the first sealing member is made of elastic material, and the first sealing member is provided with a micro-pore for connecting the air cavity with the external environment, and the first sealing member can close the micro-pore when self-contracted;

[0014] And / or, the display device further comprises a first blocking member, the panel is provided with a first air channel for inflating the air cavity, and the first blocking member is detachably and sealingly inserted into the first air channel;

[0015] And / or, the display device further comprises a second blocking member, the optical film is provided with a second air channel for inflating the air cavity, and the second blocking member is detachably and sealingly inserted into the second air channel.

[0016] In one embodiment, the preset air pressure P of the gas in the air cavity should satisfy the following condition:

[0017]

[0018] Wherein, m is the weight of the panel;

[0019] S is the area of the panel;

[0020] S z is the area of the connection between the first sealing member and the panel and the optical film;

[0021] F1 is the peeling force between the first sealing member and the optical film, with the unit of N / m 2 ;

[0022] F2 is the peeling force between the first sealing member and the panel, with the unit of N / m2 .

[0023] In one of the embodiments, the first sealing member is fixed to the panel, and the first sealing member is provided with a first bonding surface facing the optical film, and the first bonding surface is circumferentially bonded to the optical film;

[0024] Alternatively, the first sealing member is fixed to the optical film, and the first sealing member is provided with a second bonding surface facing the panel, and the second bonding surface is circumferentially bonded to the panel;

[0025] Alternatively, the first sealing member is provided with a first bonding surface facing the optical film and a second bonding surface facing the panel, and the first bonding surface is circumferentially bonded to the optical film, and the second bonding surface is circumferentially bonded to the panel.

[0026] In one of the embodiments, the first sealing member has a rectangular cross section, and the width-to-height ratio of the cross section is 0.8-1.5.

[0027] In one of the embodiments, the display device further comprises:

[0028] A diffusion plate is arranged on the back plate and located between the back plate and the optical film; and

[0029] A lamp body is arranged on the back plate and located on the side of the diffusion plate away from the optical film.

[0030] In one of the embodiments, the display device further comprises:

[0031] A first connecting member is connected between the edge of the optical film and the edge of the diffusion plate.

[0032] In one of the embodiments, the display device further comprises:

[0033] A second connecting member is connected between the edge of the diffusion plate and the back plate.

[0034] In one of the embodiments, the display device further comprises:

[0035] A reflective sheet is arranged on the side of the back plate facing the diffusion plate; and

[0036] A support is arranged on the back plate or the reflective sheet, and the support is in abutment or clearance fit with the diffusion plate.

[0037] In one of the embodiments, the display device further comprises:

[0038] A front frame is arranged on the top side of the display device. The front frame includes a first mounting part and a second mounting part connected at an angle. The first mounting part is installed and engaged with the edge of the back panel.

[0039] The second sealing element is used to seal the second mounting part to the edge of the panel.

[0040] A front housing, disposed on the ground side of the display device, the front housing including a third mounting portion and a fourth mounting portion connected at an angle, the third mounting portion being mounted and fitted with an edge of the back panel; and

[0041] The third sealing element is used to seal the fourth mounting part to the edge of the panel. Attached Figure Description

[0042] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is an isometric structural diagram of a display device according to an embodiment of this application.

[0045] Figure 2 for Figure 1 A top view of the display device.

[0046] Figure 3 for Figure 2 A schematic diagram of the rear view structure of the display device.

[0047] Figure 4 This is an assembly structure diagram of the first seal, optical diaphragm, and backplate.

[0048] Figure 5 for Figure 4 A top-view structural diagram.

[0049] Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure at point AA.

[0050] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point B in the middle.

[0051] Figure 8 For Figure 6 A local enlarged structural schematic view at C.

[0052] Figure 9 For Figure 6 A local enlarged structural schematic view at D.

[0053] Explanation of reference signs:

[0054] 100, display device; 10, backboard; 20, optical film; 30, panel; 40, first sealing member; 50, air cavity; 60, diffusion plate; 70, lamp body; 80, first connecting member; 90, second connecting member; 90a, reflecting sheet; 90b, support; 90c, face frame; 91c, first mounting portion; 92c, second mounting portion; 90d, second sealing member; 90e, front shell; 91e, third mounting portion; 92e, fourth mounting portion; 90f, third sealing member. DETAILED DESCRIPTION

[0055] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways other than those described herein without departing from the spirit of the present application. It is therefore intended that the present application not be limited by the specific embodiments disclosed below, and it is intended to cover all alternatives consistent with the principles of the present application.

[0056] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features limited by "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0058] In the present application, unless specifically defined otherwise, if there appears the terms "mount", "connect", "connect", "fix", and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the present application, unless specifically defined otherwise, if there appears the terms "mount", "connect", "connect", "fix", and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] It should be noted that if an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0061] Referring to Figures 1 to 3 A display device 100 is shown in an embodiment of the present application, which can be any one of a television, a computer, a Pad, a conference large screen, an advertising large screen, etc. Exemplarily, the display device 100 in the present application adopts a television.

[0062] Please continue to refer to Figures 4 to 9 The television has a backlight module, which at least includes a back plate 10, an optical film 20, a panel 30, and a first sealing member 40.

[0063] The optical film 20 is arranged on the back plate 10; the panel 30 is arranged on the side of the optical film 20 away from the back plate 10; the first sealing member 40 is arranged between the panel 30 and the optical film 20, and the first sealing member 40 is circumferentially sealed with the panel 30 and the optical film 20, so that the panel 30, the first sealing member 40 and the optical film 20 form an air cavity 50.

[0064] It is easy to understand that the first sealing member 40 is annular, so as to facilitate the circumferential sealing connection with the panel 30 and the optical film 20.

[0065] For example, the panel 30 and the optical film 20 are both rectangular in the present application, and the first sealing member 40 is a rectangular high-sealing PU foam. One side of the annular side of the first sealing member 40 in the thickness direction is sealed with the circumferential edge of the side of the panel 30 facing the optical film 20, and the other side of the annular side of the first sealing member 40 in the thickness direction is sealed with the circumferential edge of the side of the optical film 20 facing the panel 30. Accordingly, the air cavity 50 formed by the first sealing member 40, the panel 30 and the optical film 20 is a rectangular chamber.

[0066] Of course, the panel 30, the optical film 20 and the first sealing member 40 can also be circular, triangular, trapezoidal or other shapes, which can be selected flexibly according to actual needs.

[0067] The air cavity 50 is filled with gas with a preset air pressure, and the gas is configured to support the panel 30 and the optical film 20 to form a non-contact fit between the panel 30 and the optical film 20.

[0068] That is, when a certain amount of gas is filled in the air cavity 50 to generate a large enough preset air pressure, the panel 30 and the optical film 20 will have a relative moving tendency under the action of the air pressure. On the one hand, the panel 30 and the optical film 20 maintain a certain gap size (e.g. 2mm~5mm; preferably 3.5mm) under the action of no external force; on the other hand, even if the panel 30 and the optical film 20 are deformed in the direction of approaching each other due to external force, the air pressure can effectively offset a part of the deformation force, so that the deformation degree of the panel 30 and the optical film 20 is controllable, thereby avoiding the contact and mutual sliding friction between the panel 30 and the optical film 20, and avoiding the abrasion problem.

[0069] In summary, the implementation of the technical scheme of the embodiment will have the following beneficial effects: in the display device 100 of the present scheme, the back plate 10, the optical film 20, the first sealing member 40 and the panel 30 are sequentially assembled according to the design to form a backlight module, wherein the first sealing member 40 is circumferentially sealed and connected between the panel 30 and the optical film 20, so that an air cavity 50 can be formed therebetween, then gas is injected into the air cavity 50 to obtain a preset air pressure in the air cavity 50, in this way, the gas with the preset air pressure in the air cavity 50 can form a supporting effect on the panel 30 and the optical film 20, thereby ensuring that the panel 30 and the optical film 20 maintain a non-contact cooperation relationship, in this way, even if the display device 100 shakes during transportation and lifting, the force transmitted to the panel 30 and the optical film 20 can make the panel 30 and the optical film 20 deform, the panel 30 and the optical film 20 can be effectively prevented from contacting and moving relatively to avoid abrasion, and the display malfunctions such as black spots and bright lines during display are prevented, thereby ensuring the display effect and service life of the television.

[0070] On the basis of the above-mentioned embodiment, the preset air pressure P of the gas in the air cavity 50 should satisfy the following conditions:

[0071]

[0072] Wherein, m is the weight of the panel 30;

[0073] S is the area of the panel 30;

[0074] S z is the area of the connection between the first sealing member 40 and the panel 30 and the optical film 20;

[0075] F1 is the peeling force between the first sealing member 40 and the optical film 20, with the unit of N / m 2 ;

[0076] F2 is the peeling force between the first sealing member 40 and the panel 30, with the unit of N / m 2 .

[0077] Specifically, P is greater than , so as to ensure that the panel 30 will not contact the optical film 20 due to excessive weight in the flat lying state; P is less than , so as to prevent the air pressure from being too large to break the assembly surface of the first sealing member 40 and the panel 30 and the optical film 20, thereby affecting the supporting effect on the panel 30 and the optical film 20.

[0078] It should be noted that S is specifically the area of the side with the largest surface area of the panel 30, that is, the area of the side of the panel 30 facing the optical film 20.

[0079] S z The area of the annular region connecting the first seal 40 with the panel 30 and the optical film 20.

[0080] In addition, after the panel 30 is assembled and fixed with the optical film 20 by the first seal 40 to form the air cavity 50, in order to realize the injection of gas into the air cavity 50 to obtain a preset air pressure, the following embodiments can be used but are not limited to: in an optional embodiment, the first seal 40 is made of an elastic material, the first seal 40 is provided with a micro air hole, the micro air hole is used to communicate the air cavity 50 with the external environment, and the first seal 40 can seal the micro air hole when it is self-contracted.

[0081] When injecting gas, the micro gas needle is inserted into the micro air hole, the compressed gas source connected with the micro gas needle is opened, and the gas can be injected into the air cavity 50 through the micro gas needle. The preset air pressure value in the air cavity 50 can be evaluated by setting an air pressure sensor in the air cavity 50 or by detecting the pressure of the panel 30 and the optical film 20. When the air cavity 50 obtains the preset air pressure condition, the compressed gas source is closed, and then the micro gas needle is pulled out. Since the first seal 40 has excellent elasticity and the size of the micro air hole is very small, the micro air hole can be automatically sealed by the self-contracted deformation of the first seal 40 to prevent the gas from leaking through the micro air hole and maintain the preset air pressure environment in the air cavity 50. The gas injection implementation is simple and easy to operate.

[0082] And / or, in another optional embodiment, the display device 100 further comprises a first plugging member, the panel 30 is provided with a first air channel, the first air channel is used for inflating the air cavity 50, and the first plugging member is detachably and sealingly inserted into the first air channel.

[0083] When injecting gas, the first plugging member is pulled out, the gas injection equipment is used to inject the required flow of gas into the air cavity 50 through the first air channel, the gas injection equipment is separated from the panel 30 after the air cavity 50 obtains the preset air pressure, and then the first plugging member is inserted into the first air channel to plug the first air channel, so as to prevent the gas from leaking and maintain the preset air pressure environment of the air cavity 50. The gas injection implementation is simple and easy to operate, and the production efficiency of the display device 100 is improved.

[0084] And / or, in another optional embodiment, the display device 100 further comprises a second plugging member, the optical film 20 is provided with a second air channel, the second air channel is used for inflating the air cavity 50, and the second plugging member is detachably and sealingly inserted into the second air channel. This embodiment can obtain the same technical effect as the above-mentioned embodiments, and is understood by reference, so it is not described here.

[0085] In addition, the mounting mode of the first sealing member 40, the panel 30 and the optical film 20 can be various, for example, in an alternative embodiment, the first sealing member 40 is fixedly arranged on the panel 30, and the first sealing member 40 is provided with a first bonding surface arranged towards the optical film 20, and the first bonding surface is circumferentially sealed and bonded with the optical film 20.

[0086] It can be understood that the first sealing member 40 can be integrally formed with the panel 30, or assembled integrally through a detachable mode, so as to reduce the number of parts and installation steps. During installation, only the first bonding surface needs to be sealed and bonded with the circumferential edge of the optical film 20, so as to realize the assembly and fixation of the three and form the air cavity 50, and the installation operation is convenient, labor-saving and efficient, and the connection reliability of the first sealing member 40 and the optical film 20 is high and the sealing performance is good.

[0087] Alternatively, as an alternative to the above-mentioned embodiment, the first sealing member 40 can be fixedly arranged on the optical film 20, and the first sealing member 40 is provided with a second bonding surface arranged towards the panel 30, and the second bonding surface is circumferentially sealed and bonded with the panel 30. The first sealing member 40 can be integrally formed with the optical film 20, or assembled integrally through a detachable mode, so as to reduce the number of parts and installation steps. During installation, only the second bonding surface needs to be sealed and bonded with the circumferential edge of the panel 30, so as to realize the assembly and fixation of the three and form the air cavity 50, and the installation operation is convenient, labor-saving and efficient, and the connection reliability of the first sealing member 40 and the panel 30 is high and the sealing performance is good.

[0088] Alternatively, as an alternative to the above-mentioned embodiment, the first sealing member 40 can be fixedly arranged on the optical film 20, and the first sealing member 40 is provided with a second bonding surface arranged towards the panel 30, and the second bonding surface is circumferentially sealed and bonded with the panel 30. The first sealing member 40 can be integrally formed with the optical film 20, or assembled integrally through a detachable mode, so as to reduce the number of parts and installation steps. During installation, only the second bonding surface needs to be sealed and bonded with the circumferential edge of the panel 30, so as to realize the assembly and fixation of the three and form the air cavity 50, and the installation operation is convenient, labor-saving and efficient, and the connection reliability of the first sealing member 40 and the panel 30 is high and the sealing performance is good.

[0089] For example, the first sealing member 40 can be, but is not limited to, any one of double-sided adhesive tape, PU foam, adhesive tape and the like, which can be selected flexibly according to actual needs.

[0090] In addition, in any of the above embodiments, the first seal 40 has a rectangular cross section, and the cross section has an aspect ratio of 0.8-1.5. Preferably, the cross section has an aspect ratio of 1.2, so that the first seal 40 can have sufficient structural strength to avoid being crushed by the panel 30 to cause the panel 30 to contact the optical film 20 and cause abrasion, and the first seal 40 can have sufficient bonding area with the panel 30 and the optical film 20 to ensure sealing effect and reliability.

[0091] Please continue to refer to Figures 6 to 9 Further, the display device 100 further comprises a diffusion plate 60 and a lamp body 70. The diffusion plate 60 is arranged on the back plate 10 and located between the back plate 10 and the optical film 20. The lamp body 70 is arranged on the back plate 10 and located on the side of the diffusion plate 60 away from the optical film 20. In operation, the lamp body 70 emits light, the light is irradiated to the diffusion plate 60, the diffusion plate 60 uniformly distributes the light, then the light passes through the optical film 20, the optical film 20 further regulates the light transmittance, reflectivity, light distribution, energy distribution, etc. of the light to obtain better light effect, and finally the light transmits through the panel 30 to make the backlight module obtain the display effect of being turned on.

[0092] Optionally, the lamp body 70 can be any one of a lamp strip, a lamp belt, a lamp bead, etc. or a combination of at least two of them. To achieve energy saving and consumption reduction, the lamp body 70 adopts an LED light emitting lamp.

[0093] Further, to make the optical film 20, the diffusion plate 60 and the back plate 10 have better assembly stability and higher connection strength, avoid relative displacement under the influence of vibration, deformation force, etc. to affect the structural stability and practical effect of the display device 100, on the basis of the above embodiments, the display device 100 further comprises a first connecting piece 80 and a second connecting piece 90. The first connecting piece 80 is connected between the edge of the optical film 20 and the edge of the diffusion plate 60. The second connecting piece 90 is connected between the edge of the diffusion plate 60 and the back plate 10.

[0094] For example, the first connecting piece 80 and the second connecting piece 90 adopt any one of double-sided adhesive, glue, etc. and can be flexibly selected according to actual needs.

[0095] Please continue to refer to Figures 6 to 9 In addition, the display device 100 further comprises a reflective sheet 90a and a bracket 90b. The reflective sheet 90a is arranged on the side of the back plate 10 facing the diffusion plate 60. The bracket 90b is arranged on the back plate 10 or the reflective sheet 90a, and the bracket 90b abuts against or gap fits the diffusion plate 60.

[0096] The reflecting sheet 90a is used to reflect the light emitted by the lamp body 70 that fails to go towards the diffusion plate 60, so as to make more light irradiate towards the direction of the diffusion plate 60, improving the light utilization rate. The support 90b is used to support and position the diffusion plate 60, so as to improve the installation stability and strength of the diffusion plate 60.

[0097] Further, the display device 100 further comprises a face frame 90c, a second sealing member 90d, a front shell 90e and a third sealing member 90f. The face frame 90c is arranged on the top side of the display device 100, and comprises a first mounting portion 91c and a second mounting portion 92c connected at an included angle. The first mounting portion 91c is mounted in cooperation with the edge portion of the back plate 10. The second mounting portion 92c is sealingly connected with the edge portion of the panel 30 through the second sealing member 90d. The front shell 90e is arranged on the bottom side of the display device 100, and comprises a third mounting portion 91e and a fourth mounting portion 92e connected at an included angle. The third mounting portion 91e is mounted in cooperation with the edge portion of the back plate 10. The fourth mounting portion 92e is sealingly connected with the edge portion of the panel 30 through the third sealing member 90f.

[0098] The first mounting portion 91c and the third mounting portion 91e are respectively mounted in cooperation with the edge portion of the back plate 10, so as to form an edge sealing effect, improving the appearance, touch feeling and safety performance of the whole machine. The second mounting portion 92c is sealingly connected with the panel 30 through the second sealing member 90d, and the fourth mounting portion 92e is sealingly connected with the panel 30 through the third sealing member 90f. On the one hand, the panel 30, the optical film sheet 20 and the diffusion plate 60 are laminated and pressed on the back plate 10, improving the assembly structure stability. On the other hand, an effective sealing is formed, preventing dust and other stains in the external environment from entering the inside of the display device 100, and affecting the display effect, service life and the like of the display device 100.

[0099] For example, the second sealing member 90d and the third sealing member 90f can be any one of double-sided adhesive tape, foam pad and the like, and the second sealing member 90d and the third sealing member 90f can be the same or different, which can be selected flexibly according to actual needs.

[0100] It should be further noted that, in order to further improve the installation firmness of the panel 30, the panel 30 can be directly bonded, clamped or magnetically connected to the back plate 10.

[0101] The bottom side portion of the diffusion plate 60 must be fixed to the back plate 10 by using double-sided adhesive tape, and the top side portion can be fixed to the back plate 10 or not. The bottom side portion between the optical film sheet 20 and the diffusion plate 60 must be fixed by using double-sided adhesive tape, and the top side portion can be fixed to the back plate 10 or not. In this way, the panel 30 can be effectively prevented from leaking or even falling off.

[0102] Each technical feature of the above-described embodiments can be combined with any other technical feature, and for the sake of brevity, not all possible combinations are described, but it is understood that the scope of the present disclosure encompasses all such possible combinations.

[0103] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A display device having a backlight module, characterized by, The backlight module comprises: a back plate; an optical film sheet arranged on the back plate; a panel arranged on a side of the optical film sheet away from the back plate; and a first sealing member arranged between the panel and the optical film sheet, and the first sealing member is circumferentially sealed with the panel and the optical film sheet, so that an air cavity is formed between the panel, the first sealing member and the optical film sheet. The air cavity is filled with gas with a preset air pressure, and the gas is configured to support the panel and the optical film sheet to make the panel and the optical film sheet non-contact.

2. The display device of claim 1, wherein, The first sealing member is made of elastic material, and the first sealing member is provided with a micro-pore for connecting the air cavity with the external environment, and the first sealing member can close the micro-pore when it is self-contracted. The display device further comprises a first plugging member, the panel is provided with a first air duct for inflating the air cavity, and the first plugging member is detachably and sealingly inserted into the first air duct. The display device further comprises a second plugging member, the optical film sheet is provided with a second air duct for inflating the air cavity, and the second plugging member is detachably and sealingly inserted into the second air duct.

3. The display device of claim 1, wherein, The preset air pressure P of the gas in the air cavity should satisfy the following condition: Wherein, m is the weight of the panel; S is the area of the panel; S z an area of connection of the first seal to the faceplate and the optical film; F1 is the peel force between the first seal and the optical membrane, in N / m 2 ; F2 is the peel force between the first seal and the faceplate in N / m 2 .

4. The display device of claim 1, wherein, The first sealing member is fixed to the panel, and the first sealing member is provided with a first adhesive surface facing the optical film sheet, and the first adhesive surface is circumferentially sealed and adhered to the optical film sheet. Alternatively, the first sealing member is fixed to the optical film sheet, and the first sealing member is provided with a second adhesive surface facing the panel, and the second adhesive surface is circumferentially sealed and adhered to the panel. Alternatively, the first sealing member is provided with a first adhesive surface facing the optical film sheet and a second adhesive surface facing the panel, and the first adhesive surface is circumferentially sealed and adhered to the optical film sheet, and the second adhesive surface is circumferentially sealed and adhered to the panel.

5. The display device of claim 1, wherein, The cross section of the first sealing member is rectangular, and the width-height ratio of the cross section is 0.8-1.

5.

6. The display device of claim 1, wherein, The display device further comprises: a diffusion plate arranged on the back plate and located between the back plate and the optical film sheet; and a lamp body arranged on the back plate and located on a side of the diffusion plate away from the optical film sheet.

7. The display device of claim 6, wherein, The display device further comprises: a first connecting member connected between an edge of the optical film sheet and an edge of the diffusion plate.

8. The display device of claim 6, wherein, The display device further comprises: a second connecting member connected between an edge of the diffusion plate and the back plate.

9. The display device of claim 6, wherein, The display device further comprises: a reflective sheet arranged on a side of the back plate facing the diffusion plate; and a bracket arranged on the back plate or the reflective sheet, and the bracket is in abutment or gap fit with the diffusion plate.

10. The display device of claim 1, wherein, The display device further comprises: a face frame arranged on a sky side of the display device, the face frame including a first mounting portion and a second mounting portion connected at an angle, the first mounting portion being mounted in cooperation with an edge portion of the back plate; a second sealing member by which the second mounting portion is sealingly connected with an edge portion of the face plate; a front case arranged on a ground side of the display device, the front case including a third mounting portion and a fourth mounting portion connected at an angle, the third mounting portion being mounted in cooperation with an edge portion of the back plate; and a third sealing member by which the fourth mounting portion is sealingly connected with an edge portion of the face plate.

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