Display device

Abstract

The invention discloses a display device which comprises a display screen and a backlight module. The display screen comprises a first light emitting surface and a first light incident surface which are oppositely arranged; the backlight module is located on a first light inlet face of the display screen and comprises a back plate and an optical composite film, the optical composite film comprises a film body and a light uniformizing layer which are attached to each other, the optical composite film is erected on the back plate, a backlight source is arranged on the back plate, and the light uniformizing layer is arranged on the light uniformizing layer. Light emitted by the backlight source sequentially passes through the diaphragm main body and the dodging layer, is dodged and atomized by the dodging layer, and then is emitted from a first light inlet surface of the display screen to a first light outlet surface. According to the technical scheme, the display device can achieve thinning design.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a display device. Background Technology

[0002] With the continuous upgrading of display devices, their characteristics of being lightweight, thin, small, and having low power consumption have made them popular. Among them, the screen of an LCD device itself does not emit light; in order to realize the display function, the LCD panel requires a backlight module to provide a light source.

[0003] In related technologies, backlight modules are classified into direct-lit backlight modules and edge-lit backlight modules based on the position of the light source. Typically, in a direct-lit backlight module, the light source is located on the back panel, and optical devices transform the point light source into a uniform surface light source, driving the LCD screen to achieve uniform display. The diffuser plate's main function is to achieve the diffusion effect of the point light source and support other optical films. Therefore, the diffuser plate needs a certain thickness and strength to achieve its optical effect and support function, resulting in high manufacturing costs, large thickness, and heavy weight for direct-lit backlight modules, which is detrimental to the development of thinner and lighter display devices. Summary of the Invention

[0004] This application provides a display device that enables a thinner design for the display device.

[0005] This application provides a display device, which includes a display screen and a backlight module. The display screen includes a first light-emitting surface and a first light-receiving surface disposed opposite to each other. The backlight module is located on the first light-receiving surface of the display screen. The backlight module includes a back plate and an optical composite film. The optical composite film includes a film body and a light-diffusing layer that are bonded together. The optical composite film is disposed on the back plate. A backlight source is disposed on the back plate. The light emitted by the backlight source passes sequentially through the film body and the light-diffusing layer. After the light is atomized and diffused by the light-diffusing layer, it is emitted from the first light-receiving surface of the display screen to the first light-emitting surface.

[0006] In some embodiments, the optical composite film has a second light-incident surface and a second light-exiting surface opposite to the second light-incident surface. The film body forms the second light-incident surface, and the light-diffusing layer covers the side of the film body away from the backlight source and forms the second light-exiting surface.

[0007] In some embodiments, the material of the homogenizing layer is titanium dioxide.

[0008] In some embodiments, the titanium dioxide comprises titanium dioxide with a particle size of 100–500 nm.

[0009] In some embodiments, the second light-emitting surface of the optical composite film is attached to the first light-incident surface of the display screen.

[0010] In some embodiments, the second light-emitting surface of the optical composite film and the first light-incident surface of the display screen are bonded together by a first adhesive layer, and the first adhesive layer surrounds the outer side of the light-monopolizing layer.

[0011] In some embodiments, the diaphragm body is at least one of a diffusion film, a brightness enhancement film, or a reflective film.

[0012] In some embodiments, a glass substrate is attached to the first light-emitting surface of the display screen.

[0013] In some embodiments, the glass substrate is bonded to the first light-emitting surface of the display screen by a second adhesive layer.

[0014] In some embodiments, the backplate includes a connecting portion and a mounting portion connected together. The mounting portion is recessed toward the side away from the optical composite film. The backlight is disposed on the mounting portion. The connecting portion extends from the edge of the mounting portion toward the glass substrate and abuts against the optical composite film.

[0015] In some embodiments, the connecting portion abuts against the edge of the diaphragm body.

[0016] In some embodiments, a frame is also included, the frame including a first fixing part and a second fixing part connected together, the first fixing part abutting against one end of the connecting part extending toward the glass substrate, and the second fixing part limiting the side of the glass substrate.

[0017] The display device based on the embodiments of this application, by providing a light-diffusing layer on the side of the film body away from the backlight, allows the light emitted from the backlight to first pass through the film body for light enhancement and diffusion, becoming a uniform surface light source required for the display screen. Then, the light is diffused and homogenized by the light-diffusing layer. This light-diffusing layer achieves the same effect as the light diffusion while being thinner, thereby reducing the thickness of the backlight module and enabling a thinner design for the display device. Furthermore, by having the light first pass through the film body for light enhancement and diffusion, and then through the light-diffusing layer for light diffusion and homogenization, the light is prevented from being scattered after passing through the light-diffusing layer, thus avoiding insufficient light transmittance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of a display device in the prior art;

[0020] Figure 2 This is a schematic diagram of the structure of an embodiment of the display device of this application;

[0021] Figure 3 for Figure 2 The enlarged view of point A shown in the image.

[0022] Explanation of icon numbers:

[0023] 1. Display device; 10. Display screen; 11. First light-emitting surface; 12. First light-incident surface; 20. Backlight module; 21. Back plate; 211. Backlight source; 212. Connecting part; 213. Mounting part; 22. Optical composite film; 221. Film body; 222. Light-diffusing layer; 223. Second light-incident surface; 224. Second light-emitting surface; 23. First adhesive layer; 24. Diffuser plate; 30. Glass substrate; 31. Second adhesive layer; 40. Frame; 41. First fixing part; 42. Second fixing part; 43. Third fixing part; 431. First slot; 44. Receiving cavity; 45. Fixing member; 451. Second slot; 452. Snap-fit ​​protrusion; 50. Detection module.

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0026] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0027] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In related technologies, backlight modules are classified into direct-lit backlight modules and edge-lit backlight modules based on the position of the light source. Typically, in a direct-lit backlight module, the light source is positioned on the back panel, and optical devices transform the point light source into a uniform surface light source, driving the LCD screen to achieve uniform display. For example... Figure 1 As shown, this is a schematic diagram of the structure of a display device in the prior art. The main function of the diffuser plate 24 is to achieve the diffusion effect of the point light source and support other optical films. Therefore, the diffuser plate 24 is required to have a certain thickness and strength to achieve its optical effect and support function.

[0030] Furthermore, the diffuser plate 24 is usually made of PS plastic, which is relatively soft. Therefore, when the diffuser plate 24 is set in the backlight module 20, a certain number of support members need to be added between the back plate 21 and the diffuser plate 24 to keep the light mixing distance between the backlight 211 on the back plate 21 and the diffuser plate 24 consistent. In addition, a plastic frame is also set to fix the diffuser plate 24 and the optical film on the back plate to form the backlight module 20. Then, the display screen 10 is fixed on the backlight module through the front frame to form the display module. This setting will result in high manufacturing cost, large thickness and heavy weight of the direct-lit backlight module, which is not conducive to the development of thinner and lighter display devices.

[0031] To resolve the above issues, please refer to [link / reference]. Figures 2 to 3 This application proposes a display device 1, which includes a display screen 10 and a backlight module 20 in the embodiments of this application.

[0032] The display screen 10 includes a first light-emitting surface 11 and a first light-incident surface 12 disposed opposite to each other. The display screen 10 can be a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting diode (OLED), an active matrix organic light emitting diode (AMOLED), etc. When the display screen 10 in this embodiment is a liquid crystal display, its working principle is as follows: there are control circuits and driving circuits around the liquid crystal material. When the electrodes in the liquid crystal display generate an electric field, the liquid crystal molecules will twist, thereby refracting the light passing through it in a regular manner (the optical rotation of the liquid crystal material), and then filtering it through the polarizer to display it on the screen, thereby realizing the display of images.

[0033] However, since liquid crystal molecules themselves do not emit light, the display screen 10 typically requires an additional backlight 211. This main light source system is called a backlight module 20 (BLU). The backlight module 20 provides sufficient brightness and uniformly distributed light to enable the display screen 10 to display images correctly. Currently, the main backlights 211 used in LCD displays include cold cathode fluorescent lamps (CCFLs) and light-emitting diodes (LEDs). Due to the advantages of LED light sources, such as high brightness, high color purity, long lifespan, high reliability, and no mercury pollution, their usage in backlight sources is gradually increasing.

[0034] The backlight module 20 is located on the first light-incident surface 12 of the display screen 10. The backlight module 20 includes a back plate 21 and an optical composite film 22. The optical composite film 22 is mounted on the back plate 21, and a backlight source 211 is disposed on the back plate 21. The back plate 21 provides the mounting base for the entire backlight module 20. The backlight source 211 emits light to illuminate the display screen 10. The optical composite film 22 includes a film body 221 and a light-diffusing layer 222 that are bonded together. The light emitted by the backlight source 211 passes sequentially through the film body 221 and the light-diffusing layer 222, and after being atomized and diffused by the light-diffusing layer 222, it is emitted from the first light-incident surface 12 of the display screen 10 to the first light-exit surface 11.

[0035] In this embodiment, the display device 1 has a light-diffusing layer 222 on the side of the diaphragm body 221 facing away from the backlight 211. This allows the light emitted from the backlight 211 to first pass through the diaphragm body 221 for light enhancement and diffusion, becoming a uniform surface light source required for the display screen 10. Then, the light is further diffused and uniformly diffused by the light-diffusing layer 222. Compared to... Figure 1 As shown, in the prior art, the light is diffused and homogenized by setting a diffuser plate 24. The light homogenizing layer 222 of this application can achieve the same effect of diffused and homogenized light, while being thinner and lighter than the diffuser plate 24, thereby reducing the thickness of the backlight module 20 and realizing the thinner design of the display device 1.

[0036] Specifically, the optical composite film 22 has a second light-incident surface 223 and a second light-emitting surface 224 opposite to the second light-incident surface 223. The film body 221 forms the second light-incident surface 223, and the light-diffusing layer 222 covers the side of the film body 221 away from the backlight source 211 and forms the second light-emitting surface 224. Therefore, the light first passes through the film body 221 for light enhancement and diffusion, and then passes through the light-diffusing layer 222 for atomization and light diffusing. This avoids the light being scattered after passing through the light-diffusing layer 222 for atomization and diffusing, thus preventing insufficient light transmittance. It is understood that the film body 221 can also form the second light-emitting surface 224, while the light-diffusing layer 222 covers the side of the film body 221 closest to the backlight source 211 and forms the second light-incident surface 223; or, the light-diffusing layer 222 can cover both sides of the film body 221 and form the second light-incident surface 223 and the second light-emitting surface 224. This application does not limit this.

[0037] The material of the light-diffusing layer 222 is titanium dioxide, an important inorganic chemical pigment whose main component is titanium dioxide. Titanium dioxide is produced using two processes: the sulfuric acid process and the chloride process. It has important applications in industries such as coatings, inks, papermaking, plastics and rubber, chemical fibers, and ceramics. Titanium dioxide can achieve the same effect as the diffuser plate 24 in existing technologies, but is thinner and lighter. It atomizes and evens the light emitted from the backlight 211, thus eliminating the need for the diffuser plate 24 and reducing the thickness of the backlight module 20. Furthermore, by omitting the diffuser plate 24, the support components for the diffuser plate 24 on the back plate 21 and the frame for fixing the diffuser plate 24 and the optical film to the back plate 21 can also be omitted. This reduces the thickness of the backlight module 20 and further reduces the overall thickness of the display device 1, achieving an ultra-thin design. It also simplifies the manufacturing process of the display device 1 and reduces production costs.

[0038] Furthermore, the titanium dioxide component includes titanium dioxide. After the titanium dioxide is mixed with acrylate adhesive, it is coated on the surface of the membrane body 221. The acrylate adhesive is a high-performance synthetic adhesive that can improve the coating adhesion of titanium dioxide on the membrane body 221.

[0039] The particle size of titanium dioxide ranges from 100 to 500 nm. When the particle size is larger than 500 nm, the mixing effect between titanium dioxide and acrylate adhesive is poor, making it easy for titanium dioxide to detach from the surface of the film substrate 221 and form pits on the surface, affecting the atomization and light uniformity effect. When the particle size is smaller than 100 nm, the small particle size increases the processing difficulty and thus the cost. The specific data on the particle size of titanium dioxide in actual production are shown in the table below:

[0040] Particle size range unit percentage 100～200 nm 25％ 200-300 nm 45％ 300-400 nm 25％ 400-500 nm 5％

[0041] In this embodiment, the main body 221 of the film is formed by a composite of at least one of a diffusion film, a brightness enhancement film, or a reflective film, rather than multiple independent optical films as in traditional applications, thus improving the problem of poor stiffness of a single optical film. The diffusion film can further blur the image, improve the viewing angle, and also increase brightness. The brightness enhancement film can further enhance the brightness of light, improving the display intensity. Specifically, the brightness enhancement film may include a prism film, a microlens, and a reflective polarizer, which can further process the light to further improve brightness and ensure a good viewing angle. The reflective film can reflect some of the exposed light, allowing the light to be reused and improving light utilization efficiency, thereby increasing brightness.

[0042] The second light-emitting surface 224 of the optical composite film 22 is bonded to the first light-receiving surface 12 of the display screen 10. The bonding method involves adhering the second light-emitting surface 224 of the optical composite film 22 and the first light-receiving surface 12 of the display screen 10 through a first adhesive layer 23. The first adhesive layer 23 can be made of optically clear adhesive (OCA), a special adhesive used for bonding transparent optical components (such as lenses). It is colorless and transparent, has a light transmittance of over 90%, good bonding strength, can cure at room temperature or medium temperature, and has low curing shrinkage. This allows the second light-emitting surface 224 of the optical composite film 22 and the first light-receiving surface 12 of the display screen 10 to adhere tightly without affecting the light transmission effect of the optical composite film 22 and the display screen 10. Of course, the first adhesive layer 23 can also be made of other materials such as UV resin or thermosetting resin, which have a certain degree of light transmittance; this application does not limit this.

[0043] Due to the inherent characteristics of the optical composite film 22, it is prone to poor stiffness and wrinkling. This can be addressed by bonding it to the display screen 10 using the first adhesive layer 23. This allows the optical composite film 22 to be integrated onto the display screen 10, which boasts excellent dimensional stability and a low coefficient of thermal expansion. This improves the wrinkling problem caused by drastic changes in environmental humidity and temperature, effectively mitigating the issues of poor stiffness and wrinkling in the optical composite film, thereby enhancing the production quality of the display device 1. Furthermore, the adhesive bonding method between the optical composite film 22 and the display screen 10 reduces the need for components such as the frame and front bezel required for fixing the optical composite film 22 and the display screen 10 in related technologies, further contributing to the overall lightweight and ultra-thin design of the display device 1.

[0044] It should be noted that the first adhesive layer 23 is disposed around the outside of the light-diffusing layer 222, thereby avoiding any adverse effect of the first adhesive layer 23 on the light-diffusing effect of the light-diffusing layer 222. The first adhesive layer 23 can be disposed around the light-diffusing layer 222 to achieve frame bonding between the optical composite film 22 and the display screen 10. This ensures the bonding strength while not affecting the light-diffusing effect of the light-diffusing layer 222, and reduces the area used by the second adhesive layer 31, thereby reducing production costs. Alternatively, the first adhesive layer 23 can be completely adhered to the second light-emitting surface 224 of the optical composite film 22 or the first light-incident surface 12 of the display screen 10, so that the optical composite film 22 and the display screen 10 are fully bonded, which will improve the bonding firmness between the optical composite film 22 and the display screen 10.

[0045] In some embodiments, the display device 1 further includes a glass substrate 30, which can be divided into two main categories: alkali glass and alkali-free glass. The glass substrate 30 is generally made of a material with a very low coefficient of thermal expansion. Because the coefficient of thermal expansion of the glass substrate 30 is very low, the proportion of expansion or contraction of the glass substrate 30 due to temperature changes is also low, so that the thermal expansion of the display screen 10 is minimized.

[0046] The glass substrate 30 is attached to the first light-emitting surface 11 of the display screen 10. The bonding method involves the glass substrate 30 being bonded to the first light-emitting surface 11 of the display screen 10 via a second adhesive layer 31. The second adhesive layer 31 can surround the glass substrate 30 or the display screen 10, achieving a frame bonding between the glass substrate 30 and the display screen 10. This reduces the area of ​​the second adhesive layer 31 used while maintaining bonding strength, thereby lowering production costs. Alternatively, the second adhesive layer 31 can be completely adhered to the side of the glass substrate 30 where it is bonded to the display screen 10, achieving full bonding and improving the bonding firmness between the glass substrate 30 and the display screen 10. The material of the second adhesive layer 31 can be the same as the first adhesive layer 23, i.e., both are optical adhesives. Of course, the material of the second adhesive layer 31 can also be different from the first adhesive layer 23; this application does not impose any restrictions on this.

[0047] In addition, the backplate 21 also includes a connecting portion 212 and a mounting portion 213 connected together. The connecting portion 212 extends from the edge of the mounting portion 213 toward the glass substrate 30 and abuts against the optical composite film 22. The connecting portion 212 abuts against the edge of the film body 221, which can support and fix the optical composite film 22. The mounting portion 213 is recessed toward the side away from the optical composite film 22. The backlight 211 is disposed on the mounting portion 213. At this time, the backlight 211 can be configured as multiple LED light strips, and the multiple LED light strips are arranged at intervals on the mounting portion 213, which can provide the necessary light source for the display screen 10.

[0048] Please see Figure 2 and Figure 3 In some embodiments, the display device 1 further includes a bezel 40 and a detection module 50. The bezel 40 can be made of various materials with certain strength and hardness, such as plastic or sheet metal. The bezel 40 can be a one-piece structure to improve the stability of the connection. It is understood that in other embodiments, the bezel 40 can also be a detachable segmented structure, which can be manufactured according to actual needs to meet the needs of different device structures and reduce production costs.

[0049] The frame 40 includes a first fixing part 41, a second fixing part 42, and a third fixing part 43 connected to each other. The first fixing part 41 abuts against the end of the connecting part 212 extending toward the glass substrate 30. The second fixing part 42 limits the side of the glass substrate 30. In a configuration that omits the plastic frame and front frame, the side of the glass substrate 30 can be limited, and the display screen 10 can also be limited, ensuring the stability of the laminated structure. The first fixing part 41, the second fixing part 42, and the third fixing part 43 enclose a receiving cavity 44. The detection module 50 is disposed in the receiving cavity 44 for detecting user touch operations.

[0050] The frame 40 also includes a fixing member 45, which is connected to the second fixing part 42 and the third fixing part 43 to cover the receiving cavity 44 and prevent foreign objects from entering the receiving cavity 44 and damaging the detection module 50. The fixing member 45 has two opposite sides, one end of which is engaged with the second fixing part 42 and the other end of which is engaged with the third fixing part 43, and partially abuts against the upper part of the glass substrate 30 to further limit and fix the glass substrate 30.

[0051] Specifically, the third fixing part 43 has a first slot 431, and the fixing member 45 has a second slot 451 at one end and a snap-fit ​​protrusion 452 at the other end. The second fixing part 42 abuts against the groove wall of the second slot 451, and the snap-fit ​​protrusion 452 snaps against the first slot 431, so that the fixing member 45 is firmly connected with the second fixing part 42 and the third fixing part 43 to seal the receiving cavity 44, thereby improving the airtightness of the receiving cavity 44, ensuring the strength and stability of the connection, and reducing the number of connecting parts. By reducing the bezel 40, the display device 1 can be further thinned. In addition, the back side of the groove wall of the second slot 451 of the fixing member 45 also abuts against the side of the glass substrate 30, so that the fixing member 45 can abut and fix in multiple directions on the side and top of the glass substrate 30 to limit and protect the glass substrate 30.

[0052] The detection module 50 can be, for example, an infrared detection device or a capacitance detection device. When the detection module 50 is set as a capacitance detection device, the capacitance detection device includes a capacitance input board set on the display screen 10 and a capacitance control circuit connected to the capacitance input board. The capacitance control circuit is connected to the main control circuit. When the detection module 50 is set as an infrared input module, the display device 1 of this application is also called an infrared touch screen. The infrared detection device includes an infrared sensing board set on the display screen 10, an infrared light strip set in the receiving cavity 44, and an infrared control circuit connected to the infrared sensing board and the infrared light strip. The infrared control circuit is connected to the main control circuit. In this case, the fixing member 45 can also have a certain light transmittance to ensure that the infrared light emitted by the infrared light strip set in the receiving cavity 44 can be received by the infrared sensing board.

[0053] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0054] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include The display screen includes a first light-emitting surface and a first light-receiving surface that are positioned opposite to each other. as well as A backlight module is located on the first light-incident surface of the display screen. The backlight module includes a back plate and an optical composite film. The optical composite film includes a film body and a light-diffusing layer that are bonded together. The optical composite film is laid on the back plate. A backlight source is provided on the back plate. The light emitted by the backlight source passes sequentially through the film body and the light-diffusing layer. After the light is atomized and diffused by the light-diffusing layer, it is emitted from the first light-incident surface of the display screen to the first light-outceasing surface.

2. The display device as described in claim 1, characterized in that, The optical composite film has a second light-incident surface and a second light-exiting surface opposite to the second light-incident surface. The film body forms the second light-incident surface, and the light-diffusing layer covers the side of the film body away from the backlight source and forms the second light-exiting surface.

3. The display device as described in claim 2, characterized in that, The material of the homogenizing layer is titanium dioxide.

4. The display device as described in claim 3, characterized in that, The titanium dioxide comprises titanium dioxide, and the particle size of the titanium dioxide is 100-500 nm.

5. The display device as described in claim 2, characterized in that, The second light-emitting surface of the optical composite film is attached to the first light-incident surface of the display screen.

6. The display device as claimed in claim 5, characterized in that, The second light-emitting surface of the optical composite film and the first light-incident surface of the display screen are bonded together by a first adhesive layer, and the first adhesive layer surrounds the outside of the light-monopolizing layer.

7. The display device according to any one of claims 1 to 6, characterized in that, The main body of the membrane is at least one of a diffusion membrane, a brightness enhancement membrane, or a reflective membrane.

8. The display device as claimed in claim 1, characterized in that, It also includes a glass substrate, which is attached to the first light-emitting surface of the display screen.

9. The display device as claimed in claim 8, characterized in that, The glass substrate is bonded to the first light-emitting surface of the display screen through a second adhesive layer.

10. The display device as claimed in claim 8, characterized in that, The backplate includes a connecting portion and a mounting portion connected together. The mounting portion is recessed toward the side away from the optical composite film. The backlight is disposed on the mounting portion. The connecting portion extends from the edge of the mounting portion toward the glass substrate and abuts against the optical composite film.

11. The display device as claimed in claim 10, characterized in that, The connecting portion abuts against the edge of the diaphragm body.

12. The display device as claimed in claim 10, characterized in that, It also includes a frame, which includes a first fixing part and a second fixing part connected to each other. The first fixing part abuts against one end of the connecting part extending toward the glass substrate, and the second fixing part limits the side of the glass substrate.

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