Display module of suspension type optical film group

Abstract

The utility model relates to a display module of a suspension type optical film group, which comprises a light guide plate, a middle frame, an optical film assembly and a liquid crystal screen, the middle frame comprises a side frame and a main frame, the side frame is arranged on the periphery of the main frame in a surrounding manner, a first step structure is formed on one side of the main frame, and a second step structure is formed on the other side of the main frame. The first step structure is provided with a first step structure, the second step structure is provided with a third step structure sinking towards the first step structure, the light guide plate is embedded in the first step structure, the liquid crystal screen is embedded in the second step structure, and the optical film assembly is embedded in the third step structure. The beneficial effects of the utility model lie in that optical performance can be effectively improved, product reliability is enhanced, and installation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen technical field, concretely relates to a display module of suspension type optical module. BACKGROUND

[0002] Display technology occupies a vital position in today's science and technology field, is widely used in mobile phone, tablet computer, liquid crystal television and various kinds of electronic equipment, and the display module as the core component of display equipment, its performance directly influences display effect and user experience.In the traditional display module design, optical film assembly is usually directly attached on the light guide plate, this design can guarantee the effective transmission and utilization of light to a certain extent, but also has many problems.

[0003] Firstly, because the light guide plate and optical film assembly surface are difficult to be absolutely flat, when the two are attached, local close contact area is formed, and light will interfere at these contact points, producing newton ring phenomenon, newton ring will make display picture appear light and shade interlaced stripe, seriously affect the uniformity and definition of display, reduce the user's visual experience, in addition, direct attachment is not conducive to the diffusion and mixing of light, and the brightness non-uniformity of light guide plate exit light is difficult to effectively improve, resulting in obvious light and dark difference of display screen in different areas.

[0004] Secondly, in the production, transportation and use process of display equipment, it is inevitable to be affected by external force such as vibration and friction, the optical film assembly and the light guide plate are in direct contact, and will rub each other under the action of these external forces, causing the microstructure of the light guide plate surface and the coating of the optical film assembly to be damaged, and long-term wear will cause the light guide efficiency of the light guide plate to decrease, and the optical performance of the optical film assembly to be poor, thereby shortening the service life of the display module;In the friction process, static electricity is easily generated on the surface of the light guide plate and the optical film assembly, and static electricity accumulation to a certain extent will cause static discharge phenomenon, causing irreversible damage to the coating and internal structure of the film, further affecting the performance and stability of the display module.

[0005] Finally, the traditional direct attachment method increases the installation difficulty and damage risk, and in the installation process, the optical film assembly and the light guide plate need to be accurately aligned, and slight deviation may cause uneven attachment, affect the display effect, and in the installation process, the hand or tool is easy to touch the light guide plate, causing surface scratch or displacement, so that automatic assembly is not easy to realize. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a display module of suspension type optical film group which can effectively improve the optical performance, improve product reliability and facilitate installation.

[0007] A display module of a suspended optical film group, comprising a light guide plate, a middle frame, an optical film assembly and a liquid crystal screen, the middle frame comprises a side frame and a main frame, the side frame is arranged around the outer periphery of the main frame, one side of the main frame is formed with a first step structure, the other side is formed with a second step structure, the second step structure is provided with a third step structure which is sunken towards the first step structure, the light guide plate is embedded on the first step structure, the liquid crystal screen is embedded on the second step structure, and the optical film assembly is embedded on the third step structure.

[0008] In the above scheme, the light guide plate is embedded on the first step structure of the middle frame, the optical film assembly is embedded on the third step structure, and the optical film assembly and the light guide plate form a certain gap, so that the optical film assembly is suspended above the light guide plate without contacting the light guide plate, avoiding the local close contact caused by uneven surface, thus avoiding the Newton ring and other phenomena caused by the interference of light at the contact point, and the existence of the gap provides more scattering and reflection space for the light, the light emitted from the light guide plate can be more evenly distributed in the entire optical film assembly range after multiple scattering and reflection in the gap; the optical film assembly and the light guide plate are not in contact, avoiding mutual wear caused by external forces such as vibration and friction during production, transportation and use of the display device, and reducing the possibility of static electricity; in terms of installation, the problem of precise alignment of the light guide plate and the optical film assembly can be avoided, the gap also provides more space for installation operation, reducing the risk of component displacement or damage caused by accidental touch, improving the convenience of installation, and thus facilitating automatic assembly. Since the third step structure is a sunken design based on the second step structure, it provides suitable installation positions for different components without increasing the thickness of the middle frame, achieving efficient use of space.

[0009] Further, the third step structure is provided with two groups of symmetrical step structures, and a groove is formed between the two groups of step structures, and double-sided adhesive tape is attached to the groove and the step structure.

[0010] In the above scheme, the groove and the step structure provide a clear and accurate installation position for the film sheet of the optical film assembly. Since the two groups of step structures are symmetrically arranged, the film sheet can be quickly and accurately placed according to this symmetry during installation, avoiding the problems of deviation and misplacement during installation of the film sheet, so that automatic assembly can be realized. In large-scale production of display modules, such precise positioning can significantly improve production efficiency and reduce the rate of defective products caused by inaccurate installation positions. The double-sided adhesive tape attached to the groove and the step structure can firmly adhere the film sheet to the third step structure, and this adhesion method increases the adhesion between the film sheet and the step structure, effectively preventing the film sheet from loosening or falling off due to factors such as vibration and friction during use.

[0011] Further, the optical film assembly comprises a diffusion sheet, a lower prism sheet and an upper prism sheet, the diffusion sheet is provided with a first protruding structure, the first protruding structure is embedded and fitted in the groove position, and the lower prism sheet and the upper prism sheet are sequentially stacked on the diffusion sheet.

[0012] In the above scheme, the first protruding structure on the diffusion sheet is embedded and fitted with the groove position, which provides a precise positioning reference for the installation of the diffusion sheet. After the accurate installation of the diffusion sheet, a stable and accurate foundation is provided for the subsequent stacking of the lower prism sheet and the upper prism sheet. Since the relative position accuracy between each film has a great influence on the optical performance, this precise positioning can ensure the accurate relative position of the lower prism sheet and the upper prism sheet with the diffusion sheet, so that the best matching state between each layer of the optical film assembly is achieved.

[0013] Further, the stepped structure comprises a first step part, a second step part and a third step part, the lower prism sheet is provided with a second protruding structure, the upper prism sheet is provided with a third protruding structure, the second protruding structure is fitted with the first step part, and the third protruding structure is fitted with the second step part.

[0014] In the above scheme, the first step part of the stepped structure is fitted with the second protruding structure of the lower prism sheet, and the second step part is fitted with the third protruding structure of the upper prism sheet, which provides precise positioning for the installation of the lower prism sheet and the upper prism sheet. At the same time, the design of the first step part and the second step part can ensure that the lower prism sheet and the upper prism sheet maintain a stable relative position relationship during long-term use, avoiding the position change of the lower prism sheet and the upper prism sheet due to factors such as vibration and collision, thereby maintaining the stability of the optical performance of the display module.

[0015] Further, one side of the liquid crystal screen is fitted with the third step part.

[0016] In the above scheme, the second step structure and the third step part provide clear positioning and support for the installation of the liquid crystal screen, making the installation process of the liquid crystal screen more simple and accurate. The installation personnel only need to accurately embed the liquid crystal screen into the second step structure and ensure that one side of the liquid crystal screen is fitted with the double-sided adhesive tape on the third step part, and the installation can be completed. This reduces the adjustment and calibration work in the installation process and improves the installation efficiency.

[0017] Further, the third step structure is provided with at least two positioning blocks, the positioning blocks are integrally formed with the middle frame, and the diffusion sheet, the lower prism sheet and the upper prism sheet are provided with positioning grooves corresponding to the positions of the positioning blocks.

[0018] In the above scheme, the diffusion sheet, the lower prism sheet and the upper prism sheet are positioned and installed through the groove and the stepped structure, the design of the positioning block embedded in the positioning groove increases the connecting point and the contact area between the diffusion sheet, the lower prism sheet and the upper prism sheet and the third stepped structure, improves the stability of the installation of the diffusion sheet, the lower prism sheet and the upper prism sheet, and effectively prevents the displacement or loosening of the diffusion sheet, the lower prism sheet and the upper prism sheet due to external forces such as vibration and collision during the use of the display module, ensures the structural stability of the optical film assembly, and prolongs the service life of the product.

[0019] Further, at least one limiting block is arranged at the corner of the first stepped structure, the limiting block is integrally formed with the middle frame, and the limiting block abuts against the light guide plate.

[0020] In the above scheme, the stability of the position of the light guide plate is crucial to its light propagation performance, the limiting block ensures that the light guide plate is always in the correct position, which can make the light uniformly propagate in the light guide plate, avoid the change of the light propagation path caused by the displacement of the light guide plate, and thus ensure the brightness uniformity and color consistency of the display picture, and improve the display quality.

[0021] Further, it further comprises a reflecting sheet, the reflecting sheet is provided with a plurality of bending edges on the periphery, and the bending edges are attached to the side edges of the light guide plate.

[0022] In the above scheme, the bending edges are attached to the side edges of the light guide plate, which can effectively reduce the leakage of light from the side edges of the light guide plate. When the light propagates inside the light guide plate, it may originally escape from the side edges and be lost. The bending edges can reflect the light that may escape back into the light guide plate, thereby improving the utilization rate of light and enhancing the brightness of the entire display module. The bending edges of the reflecting sheet are only attached to the side edges of the light guide plate that do not contact the light bar assembly.

[0023] Further, it further comprises a back plate, the back plate covers the reflecting sheet and the light guide plate and is buckled to the side frame.

[0024] In the above scheme, the back plate is buckled to the side frame, realizing the stable connection of the back plate and the middle frame. Through the covering of the back plate on the reflecting sheet and the light guide plate, and the cooperation between the components, the components in the device have a relatively stable layout in space, reducing the mutual interference and displacement between the components, and improving the reliability of the overall structure.

[0025] Further, it further comprises a light bar assembly, the light bar assembly is connected to one side of the back plate, the light bar assembly is adjacent to one side edge of the light guide plate, the light bar assembly comprises an FPC piece and a light-emitting light bar, the light-emitting light bar is connected to the FPC piece, and the main side frame is provided with a through hole for the FPC piece to pass through at one end close to the FPC piece.

[0026] In the above scheme, the lamp strip assembly is first installed on the back plate during assembly, and then the back plate is buckled on the side frame, so that the assembly method is more simple and efficient, easy to realize automatic assembly, the through hole provided on the main frame for the FPC piece to pass through provides convenience for the installation of the FPC piece, and the FPC piece can be led out from the inside of the display module through the through hole and connected with the external power supply, control circuit and the like, avoiding the interference and damage problems that may be caused by the extrusion of the FPC piece. This installation method helps to improve the reliability of electrical connection and reduce the probability of failure.

[0027] The display module of the suspension type optical film group has the beneficial effects of effectively improving optical performance, improving product reliability and facilitating installation. The light guide plate is embedded on the first step structure of the middle frame, the optical film assembly is embedded on the third step structure, and the optical film assembly and the light guide plate form a certain gap. In this way, the optical film assembly is suspended above the light guide plate without contacting the light guide plate, avoiding the local close-fitting condition caused by uneven surface. This avoids the phenomenon of Newton's ring caused by interference of light at the contact point, and the existence of the gap provides more scattering and reflection space for light. The light emitted from the light guide plate is scattered and reflected multiple times in the gap, and can be more uniformly distributed within the entire optical film assembly range.

[0028] The optical film assembly and the light guide plate do not contact, avoiding mutual wear caused by external forces such as vibration and friction during production, transportation and use of the display device, and reducing the possibility of static electricity. In terms of installation, the problem of precise alignment of the light guide plate and the optical film assembly can be avoided, the gap also provides more space for installation operation, reduces the risk of component displacement or damage caused by accidental touch, and improves the convenience of installation, thereby facilitating automatic assembly. Since the third step structure is a sinking design based on the second step structure, it provides suitable installation positions for different components without increasing the thickness of the middle frame, achieving efficient use of space. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The exploded view of the display module of the suspension type optical film group of an embodiment.

[0030] Figure 2 The exploded view of the display module of the suspension type optical film group of an embodiment from another perspective.

[0031] Figure 3 The middle frame structure in an embodiment.

[0032] Figure 4 The second step structure, the third step structure and the stepped structure of an embodiment.

[0033] Figure 5 For Figure 4 A local enlarged view at B in FIG. 1.

[0034] Figure 6 A position schematic view of an optical film assembly of an embodiment.

[0035] Figure 7 An exploded schematic view of an optical film assembly of an embodiment.

[0036] Figure 8 For Figure 7 A local enlarged view at C in FIG. 1.

[0037] Figure 9 For Figure 3 A local enlarged view at D in FIG. 1.

[0038] Figure 10 A mounting schematic view of a back plate and a light bar assembly of an embodiment.

[0039] Figure 11 For Figure 10 A local enlarged view at D in FIG. 1.

[0040] BRIEF DESCRIPTION OF THE DRAWINGS: 1, light guide plate; 2, middle frame; 21, main frame; 211, first step structure; 212, second step structure; 213, third step structure; 214, through hole; 22, side frame; 3, optical film assembly; 31, diffusion sheet; 31, first protruding structure; 32, lower prism sheet; 321, second protruding structure; 33, upper prism sheet; 331, third protruding structure; 4, step structure; 41, first step part; 42, second step part; 43, third step part; 5, groove; 6, double-sided adhesive tape; 7, positioning block; 8, positioning groove; 9, limiting block; 10, reflecting sheet; 101, bent edge; 11, back plate; 12, light bar assembly; 121, FPC piece; 122, light-emitting light bar; 13, liquid crystal screen. DETAILED DESCRIPTION

[0041] The display module of the suspension type optical film assembly of the present application will be described in further detail below in conjunction with specific embodiments and the accompanying drawings.

[0042] As Figures 1 to 4As shown, in a preferred embodiment, the display module of the suspended optical film group comprises a light guide plate 1, a middle frame 2 and an optical film assembly 3. The middle frame 2 comprises a side frame 22 and a main frame 21. The side frame 22 is arranged around the outer periphery of the main frame 21. One side of the main frame 21 is formed with a first step structure 211, and the other side is formed with a second step structure 212. The second step structure 212 is provided with a third step structure 213 which is sunken towards the first step structure 211. The light guide plate 1 is embedded on the first step structure 211, and the optical film assembly 3 is embedded on the third step structure 213. The light guide plate 1 is embedded on the first step structure 211 of the middle frame 2, and the optical film assembly 3 is embedded on the third step structure 213. The optical film assembly 3 and the light guide plate 1 form a certain gap. In this way, the optical film assembly 3 is suspended above the light guide plate 1 without contacting the light guide plate 1, avoiding the local close-fitting situation caused by uneven surface. This avoids the Newton's ring phenomenon caused by the interference of light at the contact point, making the display picture more pure and uniform, effectively improving the display clarity, and greatly improving the user's visual experience.

[0043] The existence of the gap provides more scattering and reflection space for light. The light emitted from the light guide plate 1 undergoes multiple scattering and reflection in the gap, which can be more uniformly distributed in the entire optical film assembly 3 range. This further enhances the diffusion effect of the light, making the display screen present a relatively consistent brightness and color at different angles, effectively improving the uneven brightness problem caused by poor light diffusion in traditional designs.

[0044] The optical film assembly 3 does not contact the light guide plate 1, avoiding mutual abrasion caused by external forces such as vibration and friction during the production, transportation and use of the display device. This effectively protects the microstructure of the light guide plate 1 surface and the coating of the optical film assembly 3, ensures the long-term stability of the light guide efficiency of the light guide plate 1 and the optical performance of the optical film assembly 3, thereby significantly prolonging the service life of the display module; the existence of the gap reduces the friction between the light guide plate 1 and the optical film assembly 3, thereby reducing the possibility of static electricity generation. Even if static electricity is generated, the gap can prevent the accumulation and transmission of static electricity to a certain extent, reducing the damage of electrostatic discharge to the coating and internal structure of the film, further improving the stability and reliability of the product.

[0045] In terms of installation, the problem of the need for precise alignment of the light guide plate 1 and the optical film assembly 3 can be avoided. The gap also provides more space for installation operations, reducing the risk of component displacement or damage caused by accidental touch, improving the convenience of installation, and thus facilitating automated assembly. Since the third step structure 213 is a sunken design based on the second step structure 212, it provides suitable installation positions for different components without increasing the thickness of the middle frame 2, achieving efficient use of space.

[0046] As shown in Figures 4 to 7 some embodiments, two sets of symmetrical stepped structures 4 are arranged on the third stepped structure 213, and a groove 5 is formed between the two sets of stepped structures 4. Double-sided tape 6 is attached to the groove 5 and the stepped structures 4. The groove 5 and the stepped structures 4 provide clear and accurate mounting positions for the film pieces of the optical film assembly 3. Because the two sets of stepped structures 4 are arranged symmetrically, the film pieces can be quickly and accurately placed according to this symmetrical characteristic during installation, avoiding the problems of deviation and misplacement during film installation. This enables automatic assembly, and in large-scale production of display modules, this precise positioning can significantly improve production efficiency and reduce the rate of defective products caused by inaccurate installation positions. The double-sided tape 6 attached to the groove 5 and the stepped structures 4 can firmly adhere the film pieces to the third stepped structure 213. This adhesive method increases the adhesion between the film pieces and the stepped structures, effectively preventing the film pieces from loosening or falling off due to factors such as vibration and friction during use.

[0047] As shown in Figures 4 to 7 some embodiments, the optical film assembly 3 includes a diffusion sheet 31, a lower prism sheet 32, and an upper prism sheet 33. The diffusion sheet 31 is provided with first protruding structures 311, which are embedded and attached to the position of the groove 5. The lower prism sheet 32 and the upper prism sheet 33 are sequentially stacked on the diffusion sheet 31. The first protruding structures 311 on the diffusion sheet 31 are embedded and attached to the position of the groove 5, providing an accurate positioning reference for the installation of the diffusion sheet 31. After the accurate installation of the diffusion sheet 31, a stable and accurate foundation is provided for the subsequent stacking of the lower prism sheet 32 and the upper prism sheet 33. Because the relative position accuracy between the film pieces has a greater impact on the optical performance, this precise positioning ensures the accurate relative position of the lower prism sheet 32 and the upper prism sheet 33 with the diffusion sheet 31, thereby achieving the best cooperation state between the film pieces of the entire optical film assembly 3.

[0048] As shown in Figures 4 to 7 some embodiments, the stepped structure 4 includes a first stepped part 41, a second stepped part 42, and a third stepped part 43. The lower prism sheet 32 is provided with a second protruding structure 321, and the upper prism sheet 33 is provided with a third protruding structure 331. The second protruding structure 321 is attached to the first stepped part 41, and the third protruding structure 331 is attached to the second stepped part 42. The first stepped part 41 of the stepped structure 4 is attached to the second protruding structure 321 of the lower prism sheet 32, and the second stepped part 42 is attached to the third protruding structure 331 of the upper prism sheet 33. This provides accurate positioning for the installation of the lower prism sheet 32 and the upper prism sheet 33. At the same time, the design of the first stepped part 41 and the second stepped part 42 ensures that the lower prism sheet 32 and the upper prism sheet 33 maintain a stable relative positional relationship during long-term use, avoiding positional changes of the lower prism sheet 32 and the upper prism sheet 33 due to factors such as vibration and collision, thereby maintaining the stability of the optical performance of the display module.

[0049] As shown in Figure 2 and Figure 4 shown, in some embodiments, further comprising a liquid crystal screen 13, the liquid crystal screen 13 is embedded on the second step structure 212, one side of the liquid crystal screen 13 is attached to the third step part 43. The second step structure 212 and the third step part 43 provide clear positioning and support for the installation of the liquid crystal screen 13, making the installation process of the liquid crystal screen 13 more convenient and accurate. The installer only needs to accurately embed the liquid crystal screen 13 into the second step structure 212 and ensure that one side of it is attached to the double-sided adhesive tape 6 on the third step part 43, and the installation can be completed, reducing the adjustment and calibration work in the installation process and improving the installation efficiency.

[0050] As shown in Figure 8 shown, in some embodiments, the third step structure 213 is provided with at least two positioning blocks 7, the positioning blocks 7 are integrally formed with the middle frame 2, and the diffusion sheet 31, the lower prism sheet 32 and the upper prism sheet 33 are provided with positioning grooves 8 corresponding to the positions of the positioning blocks 7. The diffusion sheet 31, the lower prism sheet 32 and the upper prism sheet 33 are positioned and installed through the groove 5 and the step structure 4, and the design of the positioning blocks 7 embedded in the positioning grooves 8 increases the connection points and contact area between the diffusion sheet 31, the lower prism sheet 32 and the upper prism sheet 33 and the third step structure 213, improves the stability of the installation of the diffusion sheet 31, the lower prism sheet 32 and the upper prism sheet 33, and effectively prevents the diffusion sheet 31, the lower prism sheet 32 and the upper prism sheet 33 from being displaced or loosened due to external forces such as vibration and collision during the use of the display module, ensuring the structural stability of the optical film assembly 3 and prolonging the service life of the product.

[0051] As shown in Figure 9 shown, in some embodiments, the corner of the first step structure 211 is provided with at least one limiting block 9, the limiting block 9 is integrally formed with the middle frame 2, and the limiting block 9 abuts against the light guide plate 1. The stability of the position of the light guide plate 1 is crucial to its light propagation performance, and the limiting block 9 ensures that the light guide plate 1 is always in the correct position, which can make the light uniformly propagate in the light guide plate 1, avoiding the change of the light propagation path caused by the displacement of the light guide plate 1, thereby ensuring the brightness uniformity and color consistency of the display picture and improving the display quality.

[0052] As shown in Figure 1As shown in the drawings, in some embodiments, a reflective sheet 10 is further included, and the peripheral side of the reflective sheet 10 is provided with a plurality of bent edges 101 which are attached to the side edges of the light guide plate 1. The bent edges 101 are attached to the side edges of the light guide plate 1, which can effectively reduce the light leakage from the side edges of the light guide plate 1. When the light propagates inside the light guide plate 1, it may originally escape from the side edges and be lost. The bent edges 101 can reflect the light that may escape back into the light guide plate 1, thereby improving the utilization rate of light and enhancing the brightness of the entire display module. The bent edges 101 of the reflective sheet 10 are only attached to the side edges of the light guide plate 1 which do not ring with the light bar assembly 12.

[0053] As shown in the drawings, Figure 1 and Figure 10 In some embodiments, a back plate 11 is further included, which is arranged on the reflective sheet 10 and the light guide plate 1 and is buckled with the side frame 22. The back plate 11 is buckled with the side frame 22, which realizes the stable connection between the back plate 11 and the middle frame 2. Through the covering of the back plate 11 on the reflective sheet 10 and the light guide plate 1, and the cooperation between the components, the components inside the device have a relatively stable layout in space, which reduces the mutual interference and displacement between the components and improves the reliability of the overall structure.

[0054] As shown in the drawings, Figure 10 and Figure 11 In some embodiments, a light bar assembly 12 is further included, which is connected to one side of the back plate 11 and is adjacent to one side edge of the light guide plate 1. The light bar assembly 12 includes an FPC piece 121 and a light-emitting light bar 122, and the light-emitting light bar 122 is connected with the FPC piece 121. The main frame 21 is provided with a through hole 214 through which the FPC piece 121 passes. During assembly, the light bar assembly 12 is first installed on the back plate 11, and then the back plate 11 is buckled on the side frame 22. This assembly method is simpler and more efficient, and is easy to realize automatic assembly. The through hole 214 provided on the main frame 21 provides convenience for the installation of the FPC piece 121. The FPC piece 121 can be led out from the inside of the display module through the through hole 214 and connected with the external power supply, control circuit and the like, which avoids the interference and damage problems that may be caused by the extrusion of the FPC piece 121. This installation method helps to improve the reliability of electrical connection and reduce the probability of failure.

[0055] The utility model discloses a kind of display module working principle and process of suspension type optical film group, optical film component 3 is embedded in the third step structure 213 of middle frame 2, when assembling optical film component 3, the positioning effect of groove 5 and the pasting force of double-sided adhesive 6 are used, diffusion sheet 31 is accurately and firmly installed on the third step structure 213, the second protruding structure 321 of lower prism sheet 32 is placed on diffusion sheet 31 that has been installed, the first step portion 41 of ladder structure 4 is attached to the second protruding structure 321 of lower prism sheet 32, the position of lower prism sheet 32 is accurately and firmly ensured by the positioning of first step portion 41 and the pasting of double-sided adhesive 6, finally, upper prism sheet 33 is stacked on lower prism sheet 32, the third protruding structure 331 of upper prism sheet 33 is attached to the second step portion 42 of ladder structure 4, and upper prism sheet 33 is also fixed by the positioning of second step portion 42 and the pasting of double-sided adhesive 6, light guide plate 1 is embedded in the first step structure 211 of middle frame 2, so that optical film component 3 is suspended above light guide plate 1, in the production, transportation and use process of display equipment, the mutual abrasion of light guide plate 1 and optical film component 3 caused by external force such as vibration, friction is avoided.

[0056] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to having a particular orientation, being constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0057] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0058] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood 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; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0059] Although the description of the utility model is combined with above specific embodiment, but, personnel familiar with this technical field can carry out many substitutions, modification and change according to the above content, it is obvious. Therefore, all such alternatives, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A display module of a suspended optical film group, characterized by, The light guide plate, the middle frame, the optical film assembly and the liquid crystal screen are included, the middle frame includes the side frame and the main frame, the side frame is surrounded in the outer periphery of the main frame, one side of the main frame is formed with the first step structure, the other side is formed with the second step structure, the second step structure is equipped with the third step structure which is sunken to the direction of the first step structure, the light guide plate is embedded on the first step structure, the liquid crystal screen is embedded on the second step structure, and the optical film assembly is embedded on the third step structure.

2. The display module of a suspended optical film group according to claim 1, wherein, Two groups of symmetrical step structures are arranged on the third step structure, and a groove is formed between the two groups of step structures, and double-sided adhesive tape is attached to the groove and the step structure.

3. The display module of a suspended optical film group according to claim 2, wherein, The optical film assembly includes a diffusion sheet, a lower prism sheet and an upper prism sheet, the diffusion sheet is provided with a first protruding structure, the first protruding structure is embedded and attached to the position of the groove, and the lower prism sheet and the upper prism sheet are sequentially stacked on the diffusion sheet.

4. The display module of a suspended optical film group according to claim 3, wherein, The step structure includes a first step part, a second step part and a third step part, the lower prism sheet is provided with a second protruding structure, the upper prism sheet is provided with a third protruding structure, the second protruding structure is attached to the first step part, and the third protruding structure is attached to the second step part.

5. The display module of a suspended optical film group according to claim 4, wherein, One side of the liquid crystal screen is attached to the third step part.

6. The display module of a suspended optical film group according to claim 3, wherein, At least two positioning blocks are arranged on the third step structure, the positioning blocks are integrally formed with the middle frame, and the diffusion sheet, the lower prism sheet and the upper prism sheet are provided with positioning grooves corresponding to the positions of the positioning blocks.

7. The display module of a suspended optical film group according to claim 1, wherein, At least one limiting block is arranged at the corner of the first step structure, the limiting block is integrally formed with the middle frame, and the limiting block abuts against the light guide plate.

8. The display module of a suspended optical film group according to claim 1, wherein, A reflective sheet is further included, a plurality of bending edges are arranged on the periphery of the reflective sheet, and the bending edges are attached to the side edges of the light guide plate.

9. The display module of a suspended optical film group according to claim 8, wherein, A back plate is further included, the back plate covers the reflective sheet and the light guide plate and is buckled to the side frame.

10. The display module of a suspended optical film set of claim 9, wherein, A light bar assembly is further included, the light bar assembly is connected to one side of the back plate, the light bar assembly is adjacent to one side edge of the light guide plate, the light bar assembly includes an FPC piece and a light-emitting light bar, the light-emitting light bar is connected to the FPC piece, and the main frame is provided with a through hole for the FPC piece to pass through at one end close to the FPC piece.

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