Double-sided display screen and double-sided display equipment

Abstract

The utility model discloses a double-sided display screen and double-sided display equipment, and belongs to the technical field of display screens. The double-sided display screen comprises a frame body and a display module, wherein the frame body is arranged around the display module; the display module comprises a reflector plate and a first assembly and a second assembly which are arranged on the two sides of the reflector plate, the first assembly comprises a first light guide plate and a first display panel, and the second assembly comprises a second light guide plate and a second display panel; the display module further comprises a light source assembly. The light source assembly comprises a first lamp set arranged at the first light receiving end of the first light guide plate and a second lamp set arranged at the second light receiving end of the second light guide plate. The double-sided display equipment comprises a double-sided display screen and a controller, wherein the double-sided display screen is electrically connected with the controller through an electric connecting wire. According to the double-sided display screen and the double-sided display equipment, a back plate is omitted, the structure is simple, the thickness and weight of the double-sided display screen can be reduced, assembly and installation are convenient, and the application scene is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, and in particular to a double-sided display screen and a double-sided display device. Background Art

[0002] Double-sided display refers to a display that can display content on both sides. Double-sided display is widely used in shopping malls, supermarkets, hotels, exhibition halls, public transportation, service halls and other places to provide rich display effects.

[0003] The double-sided display screen in the related art generally has two independent display screens arranged back to back, and the two display screens are connected and fixed together by structural parts to form a complete machine to display information in two directions at the same time. However, the overall volume of such a double-sided display screen is large, the weight of the whole machine is heavy, and the assembly and installation are troublesome. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a double-sided display screen and a double-sided display device, which are conducive to reducing the thickness of the double-sided display screen, reducing the weight, and facilitating assembly and installation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A double-sided display screen comprises a frame display module and a frame surrounding the outer side of the display module;

[0007] The display module comprises:

[0008] Reflective sheet;

[0009] The first component includes a first light guide plate disposed on one side of the reflector sheet, and a first display panel disposed on a side of the first light guide plate away from the reflector sheet;

[0010] The second component comprises a second light guide plate disposed on a side of the reflective sheet away from the first light guide plate, and a second display panel disposed on a side of the second light guide plate away from the reflective sheet;

[0011] The light source assembly includes a first lamp group arranged at the first light receiving end of the first light guide plate, and a second lamp group arranged at the second light receiving end of the second light guide plate, wherein the first light receiving end is located on the side of the first light guide plate facing the frame, and the second light receiving end is located on the side of the second light guide plate facing the frame.

[0012] For this double-sided display screen, structures such as the backplane and the rubber frame are cancelled. The two side light guide plates and the display panel share a single reflector, achieving a good double-sided display effect while facilitating the thin and light design of the double-sided display screen, reducing the types of materials, simplifying the assembly, and expanding the applicable installation scenarios.

[0013] Optionally, the frame body is provided with a groove, and the edges of the reflector sheet, the first component, the second component, and the light source component are arranged in the groove.

[0014] The frame body is provided with a groove, and the reflector sheet, the first component, and the second component can all be arranged in the groove so as to be supported and protected by the frame body.

[0015] Optionally, the first component further includes a first optical film sheet, and the first optical film sheet is arranged between the first light guide plate and the first display panel;

[0016] The second component further includes a second optical film sheet, and the second optical film sheet is arranged between the second light guide plate and the second display panel. The optical film sheet can achieve effects such as optimizing brightness, contrast, and color performance.

[0017] Optionally, the light source component includes a circuit board, and the first lamp group and the second lamp group are arranged on the same side of the circuit board; the circuit board is connected to the frame body. Integrating the two lamp groups on one circuit board is convenient for assembly, has a compact structure, and is beneficial for reducing the volume.

[0018] The first lamp group includes a plurality of first light-emitting elements, and the second lamp group includes a plurality of second light-emitting elements; the first lamp group and the second lamp group are two rows of light-emitting elements.

[0019] Optionally, the light source component includes a socket, the circuit board is a double-sided circuit board, and the socket is arranged on the side of the circuit board facing away from the first lamp group and the second lamp group.

[0020] Integrating the socket on the other side of the circuit board makes the wiring of the light source component more convenient.

[0021] Optionally, the first light guide plate is a glass light guide plate, and the second light guide plate is a glass light guide plate.

[0022] The glass light guide plate can improve the structural strength of the entire double-sided display screen.

[0023] Optionally, the frame body includes a first face frame part, a side frame part, and a second face frame part. The first face frame part, the side frame part, and the second face frame part are connected to define the groove, and a notch communicating with the groove is formed on the side of the frame body close to the center of the double-sided display screen;

[0024] Part of the first component extends into the groove through the notch, and the first frame portion is located on the side of the first display panel away from the first light guide plate;

[0025] Part of the second component extends into the groove through the notch, and the second frame portion is located on the side of the second display panel away from the second light guide plate.

[0026] This kind of frame design can improve the structural strength of the entire double-sided display screen.

[0027] Optionally, the display module includes a first limiting structure, the outer side of the first limiting structure abuts against the frame, and the inner side of the first limiting structure is in limiting cooperation with the first display panel in the x direction and / or the y direction;

[0028] The display module includes a second limiting structure, the outer side of the second limiting structure abuts against the frame, and the inner side of the second limiting structure is in limiting cooperation with the second display panel in the x direction and / or the y direction.

[0029] The setting of the limiting structure can limit the display panel.

[0030] Optionally, the first limiting structure includes at least four L-shaped first limiting blocks, and the four first limiting blocks are correspondingly arranged on the outer sides of the four corners of the first display panel. The outer side of each first limiting block abuts against the frame, and the inner side of each first limiting block is in limiting cooperation with the first display panel in the x direction and the y direction;

[0031] The second limiting structure includes at least four L-shaped second limiting blocks, and the four second limiting blocks are correspondingly arranged on the four corners of the second display panel. The outer side of each second limiting block abuts against the frame, and the inner side of each second limiting block is in limiting cooperation with the second display panel in the x direction and the y direction.

[0032] The L-shaped limiting blocks at the four corners have a simple structure, which is convenient for the assembly and positioning of the display panel and also protects the corners of the display panel.

[0033] Optionally, the display module includes a first limiting structure, and the first limiting structure is fixed between the first frame portion and the reflective sheet; the first frame portion abuts against the side of the first limiting structure away from the reflective sheet, and the thickness of the first limiting structure is greater than the thickness of the first display panel, so that the first frame portion and the first display panel are in clearance fit;

[0034] The display module includes a second limiting structure, which is fixed between the second surface frame and the reflective sheet; the second surface frame abuts against the side of the second limiting structure facing away from the reflective sheet, and the thickness of the second limiting structure is greater than the thickness of the second display panel, so that the second surface frame and the second display panel are gap-matched.

[0035] The limiting structure is used to maintain a gap between the display panel and the frame portion of the frame body, and protect the display panel when the frame body is subjected to impact force.

[0036] Optionally, a surface of the first light guide plate facing the reflective sheet is a first light emitting surface, and a plurality of first dimming parts are disposed on the first light emitting surface;

[0037] The second light guide plate has a second light emitting surface on one side facing the reflector sheet, and a plurality of second dimming parts are arranged on the second light emitting surface. The dimming parts are arranged on the side of the light guide plate close to the reflector sheet, and the dimming parts can be printed or laser dots to improve light utilization and optimize display brightness.

[0038] A double-sided display device, comprising:

[0039] A double-sided display screen as described in the above scheme.

[0040] Optionally, the double-sided display device further comprises a controller, and the double-sided display screen is electrically connected to the double-sided display screen via a superlink. Placing some electronic components in the external controller simplifies the internal circuit design of the double-sided display screen, which is conducive to the lightweight design of the double-sided display screen.

[0041] Optionally, a power board and a main board are arranged in the controller, and the electrical connection line is a superlink connection line. Using a superlink connection line as the electrical connection line makes wiring simpler.

[0042] The beneficial effects of the utility model are as follows: the double-sided display screen has a simple structure, the back plate is eliminated, the light source is configured as a side-entry type, the light guide plates on both sides and the display panels on both sides share a reflector plate, and while realizing double-sided display, the overall thickness, volume and weight of the double-sided display screen are reduced, the number of materials is reduced, the difficulty and time of assembly are reduced, and installation is convenient, and it can adapt to more installation environments and has a wider range of applications; the frame supports and protects the display module.

[0043] The double-sided display device, through the cooperation of the controller and the superlink connecting line, is conducive to simplifying the internal structure of the double-sided display screen and is conducive to the lightweight design of the double-sided display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The utility model is further described in detail below based on the drawings and embodiments.

[0045] Figure 1 Schematic diagram of the overall structure of the double-sided display screen described in the present utility model;

[0046] Figure 2 Schematic diagram of the structure of the display module described in the present utility model;

[0047] Figure 3 Exploded schematic diagram of the structure of the double-sided display device described in the present utility model;

[0048] Figure 4 For Figure 2 Enlarged view of part A in

[0049] Figure 5 Partial structure diagram of the display module in the double-sided display screen described in the present utility model;

[0050] Figure 6 One of the partial sectional views of the double-sided display screen described in the present utility model;

[0051] Figure 7 Another partial sectional view of the double-sided display screen described in the present utility model;

[0052] Figure 8 Schematic diagram of the structure of the light source assembly in the double-sided display screen described in the present utility model;

[0053] Figure 9 Schematic diagram of the configuration of the light source assembly, the first light guide plate, the reflector, and the second light guide plate in the double-sided display screen described in the present utility model;

[0054] Figure 10 Schematic diagram of the use of the light-dimming part of the light guide plate in the double-sided display screen described in the present utility model;

[0055] Figure 11 Schematic diagram of the structure of the double-sided display device according to an embodiment of the present utility model.

[0056] In the figure: 10, housing; 100, groove; 101, first outer frame; 102, second outer frame; 11, first face frame portion; 12, side frame portion; 13, second face frame portion; 20, reflector; 30, first component; 31, first light guide plate; 32, first optical film; 33, first display panel; 34, first limiting structure; 341, first limiting block; 40, second component; 41, second light guide plate; 42, second optical film; 43, second display panel; 44, second limiting structure; 441, second limiting block; 311, first light-emitting surface; 3111, first light-dimming portion; 312, first light-incident surface; 411, second light-emitting surface; 4111, second light-dimming portion; 412, second light-incident surface; 50, light source assembly; 51, circuit board; 52, first lamp group; 53, second lamp group; 54, socket; 60, controller; 70, connecting wire. Detailed implementation manners

[0057] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present utility model.

[0058] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0059] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0060] In the related art, a dual-sided display screen generally fixes two separate liquid crystal display modules (LCMs) together through structural components. In existing dual-sided display screens, usually each of the two liquid crystal display modules has a backplane, and the two backplanes are connected and fixed, or the two liquid crystal display modules share a backplane, which will cause some structural redundancy and lead to the following problems in the dual-sided display screen: First, the overall volume and thickness of the whole machine are large, and there are requirements for the installation environment. Some shops have limited space and cannot install and use the dual-sided display screen. Second, the number of parts is large, the assembly of the whole machine is troublesome, the cost is high and the weight is large. Third, the two liquid crystal display modules of the dual-sided display screen need to be installed and operated separately, such as connecting to the power supply, which is troublesome to install and relatively troublesome for later maintenance.

[0061] Exemplarily, the backlight modules in some of the two liquid crystal display modules in the dual-sided display screen are both direct-type backlight modules. Each liquid crystal display module includes a backplane, a light source assembly, a light guide plate, a display panel, etc. The backplane is bent to form a recess in the middle area, and the light source assembly is arranged in the recess of the backplane; when the two liquid crystal display modules are assembled into a dual-sided display screen, the two backplanes are fixed together through structural components. Since the backplane occupies a certain thickness and each dual-sided display screen includes a stacked design of two backplanes, it will cause the overall thickness of the dual-sided display screen to be larger and occupy more space.

[0062] To solve the problems of the dual-sided display screen in the related art, the present utility model proposes a dual-sided display screen. By optimizing the optical design and the stacked design of the structure, the backplane is cancelled, the light source is configured as a side-entry type, and the two display modules share a reflector to be integrated into one display module. While realizing dual-sided display, the overall thickness, volume and weight of the dual-sided display screen are reduced, the structure is simplified, the number of materials is reduced, the assembly difficulty and assembly time are reduced, it is convenient for installation, and it can adapt to more installation environments and has a wider application range.

[0063] This dual-sided display screen can be used as a dual-sided digital signage application and can be applied to fields such as commerce and public facilities. The dual-sided display screen is overall thin and light, and has a simple structure. It can be used as a mural screen or can be embedded in a wall or other positions. It can adapt to complex installation environments and is suitable for a variety of application scenarios.

[0064] Refer to Figures 1 to 10 , the present utility model also proposes a dual-sided display device, which realizes the power supply and control of the dual-sided display screen through an external controller 60, which is beneficial to the thin and light design of the dual-sided display screen and is beneficial to expanding the scenarios where the dual-sided display screen can be installed and applied.

[0065] The specific structures of the dual-sided display screen and the dual-sided display device will be described below.

[0066] It can be understood that for the housing 10, the display module, and each component within the display module, the direction towards the center of the display screen is the inner side of each component, and the direction away from the center of the display screen is the outer side of each component. Figures 1 to 10 In Figures 1 to 10 , some schematic diagrams mark the x-axis direction, y-axis direction, and z-axis direction of the dual-sided display screen and the dual-sided display device. For the convenience of understanding, the present utility model takes the state where the dual-sided display screen and the dual-sided display device are perpendicular to the ground as an example to describe the connection relationship of each component. The x-axis direction indicates the left-right direction, the y-axis direction indicates the up-down direction, and the z-axis direction indicates the front-back direction. It can be understood that in other embodiments, when the dual-sided display screen is applied, the front side of the dual-sided display screen can actually also face the ground, or have a certain inclination angle with the horizontal plane, or face other directions.

[0067] Please refer to Figures 1 to 10 , the dual-sided display screen includes a housing 10 and a backlight module. The housing 10 surrounds the outside of the backlight module, and the housing 10 is used to protect and support the backlight module.

[0068] The backlight module includes a reflective sheet 20, a first component 30, a second component 40, and a light source component 50. The first component 30 and the second component 40 are respectively arranged on opposite sides of the reflective sheet 20. The first component 30 includes a first light guide plate 31 and a first display panel 33. The second component 40 includes a second light guide plate 41 and a second display panel 43. The light source component 50 includes a first lamp group 52 and a second lamp group 53.

[0069] Among them, the first light guide plate 31 is arranged on the first side of the reflector 20, and the second light guide plate 41 is arranged on the second side of the reflector 20, that is, the reflector 20 is located between the two light guide plates. The first display panel 33 is arranged on the side of the first light guide plate 31 facing away from the reflector 20, and the second display panel 43 is arranged on the side of the second light guide plate 41 facing away from the reflector 20. Both the first display panel 33 and the second display panel 43 are used for displaying content. The first lamp group 52 is arranged at the first light receiving end of the first light guide plate 31. The first light receiving end is located on the side of the first light guide plate 31 facing the housing 10. The first lamp group 52 is used to emit light into the first light guide plate 31. The first light guide plate 31 is used to refract at least part of the light to the reflector 20. The reflector 20 is used to reflect at least part of the light in the direction of the first display panel 33 to illuminate the first display panel 33, so as to achieve the display effect of the display panel. The second lamp group 53 is arranged at the second light receiving end of the second light guide plate 41. The second light receiving end is located on the side of the second light guide plate 41 facing the housing 10. The second lamp group 53 is used to emit light into the second light guide plate 41. The second light guide plate 41 is used to refract at least part of the light to the reflector 20. The reflector 20 is used to reflect at least part of the light in the direction of the second display panel 43 to illuminate the second display panel 43, so as to achieve the display effect of the display panel.

[0070] Taking the example of placing the double-sided display screen with the display surface of the first display panel 33 facing forward and the display surface of the second display panel 43 facing backward, as Figure 3 、 Figure 4 、 Figure 5 shown, the first component 30 is arranged on the front side of the reflector 20, and the second component 40 is arranged on the rear side of the reflector 20. The first display panel 33, the first light guide plate 31, the reflector 20, the second light guide plate 41, and the second display panel 43 are arranged in sequence. The first lamp group 52 being arranged outside the first light guide plate 31 means that the first lamp group 52 is arranged on the lower side, and / or the right side, and / or the left side, and / or the upper side of the first light guide plate 31. This embodiment shows an example where the first lamp group 52 is arranged on the lower side of the first light guide plate 31. The second lamp group 53 being arranged outside the second light guide plate 41 means that the second lamp group 53 is arranged on the lower side, and / or the right side, and / or the left side, and / or the upper side of the second light guide plate 41. This embodiment shows an example where the second lamp group 53 is arranged on the lower side of the second light guide plate 41.

[0071] Referring to Figure 6 、 Figure 7, the housing 10 is provided with a groove 100. The edges of the reflector 20, the first component 30, the second component 40, and the light source component 50 are disposed in the groove 100. In this way, the housing 10 can support and protect the edge regions of the reflector 20, the first component 30, and the second component 40, and can provide an accommodation and installation space for the light source component 50. Optionally, the housing 10 is used to support and protect the front side, the outer side, and the rear side of the stacked structure formed by the first component 30, the reflector 20, and the second component 40, and the support and protection are good.

[0072] For the double-sided display screen of the present utility model, on the one hand, a side-in type backlight source design is adopted, and the light source component 50 can be configured outside the light guide plate, without the need to arrange the light source on the back of the light guide plate, reducing the occupation of the thickness of the double-sided display screen by the light source component 50, and the back plate for providing the light source installation position and supporting the light source can also be cancelled to reduce the thickness of the double-sided display screen. On the second hand, the reflector 20 is configured, and the reflector 20 can be used to reflect the light refracted by the two light guide plates to the first display panel 33 and the second display panel 43 respectively, providing a better display effect, and the two light guide plates share one reflector 20, which can reduce the thickness of the double-sided display screen. In the case of cancelling the back plate, the two light guide plates can support each other. On the third hand, in the case of cancelling the back plate, the display module is supported and limited by the housing 10 surrounding the display module, and the structure is stable. On the fourth hand, for this double-sided display screen, the back plate is cancelled, and the two light guide plates share one reflector 20, which is not only small in overall thickness, reduces the weight, simplifies the structure, but also reduces the assembly difficulty, is convenient for installation, can adapt to more installation environments, and has a wider application range. The setting of the reflector 20 can improve the light utilization rate, and on the basis of the compact design of the internal structure of the double-sided display screen, the display brightness is improved.

[0073] For this double-sided display screen, the edges of the reflector 20, the first component 30, and the second component 40 are all inserted into the groove 100 of the housing 10. In the case of cancelling the back plate, the edge region of the display module is supported and protected by the housing 10, increasing the overall structural strength of the double-sided display screen, and on the basis of providing a double-sided display effect and a thin and light design, taking into account the overall structural stiffness and reliability.

[0074] In an embodiment, the first display panel 33 and the second display panel 43 are both OC (Open cell). OC is also called a liquid crystal panel. OC is a liquid crystal panel composed of two parallel glass substrates. This structure can adjust the arrangement of liquid crystal molecules by controlling TFT, so as to realize image display. OC can select different backlight sources and encapsulation methods according to different requirements. Using OC as the display panel is more flexible.

[0075] Please continue to refer toFigure 3 、 Figures 5 to 7 To optimize the display effect, the first component 30 further includes a first optical film 32 disposed between the first light guide plate 31 and the first display panel 33. Multiple first optical films 32 can be provided or only one can be provided. The first optical film 32 can be a diffusion film, a brightness enhancement film, etc. The second component 40 further includes a second optical film 42 disposed between the second light guide plate 41 and the second display panel 43. Multiple second optical films 42 can be provided or only one can be provided. The second optical film 42 can be a diffusion film, a brightness enhancement film, etc. Among them, the diffusion film is used to provide an atomization effect to make the brightness of the display panel more uniform, and the brightness enhancement film is used to reduce light loss and improve the overall luminance and uniformity. In this embodiment, by configuring optical films in the first component 30 and the second component 40, the brightness, contrast, color performance, etc. can be optimized. In other embodiments, optical films may not be configured in the first component 30 and the second component 40 to simplify the design, reduce costs, reduce the thickness and weight of the double-sided display screen.

[0076] Please continue to refer to Figures 4 to 9 The light source component 50 further includes a circuit board 51. The first lamp group 52 and the second lamp group 53 are disposed on the same circuit board 51 and on the same side of the circuit board 51. The circuit board 51 is mounted on the frame 10 by means of fastening with fasteners, snap connection, etc. Exemplarily, when assembling the double-sided display screen, after stacking the first light guide plate 31, the reflector and the second light guide plate 41 to form a first assembly group, the light source component 50 is disposed on the lower side of the first assembly group. After adjusting the position of the light source component 50, the circuit board 51 is fixed, so that the first lamp group 52 can be aligned with the outer peripheral side surface of the first light guide plate 31 and the second lamp group 53 can be aligned with the outer peripheral side surface of the second light guide plate 41 at the same time. Integrating the first lamp group 52 and the second lamp group 53 on the same circuit board 51 can reduce the number of parts in the double-sided display screen, simplify the assembly steps, and only one alignment and one fixation are required when installing the light source component 50 to achieve the assembly of the two lamp groups, without separately positioning and fixing the first lamp group 52 and the second lamp group 53. Moreover, integrating the first lamp group 52 and the second lamp beads on the same circuit board 51, that is, assembling the light source component 50 on the same side (such as the lower side) of the first assembly group composed of the first light guide plate 31, the reflector, and the second light guide plate 41, compared with the assembly method of setting the first lamp group 52 and the second lamp group 53 on different sides of the first assembly group, can save space, reduce the overall volume of the double-sided display screen, and is beneficial to installation and application in a limited space.

[0077] It can be understood that setting the first light group and the second light group on the circuit board as described in this application not only means that the first light group and the second light group are fixed on the circuit board, but also that there is an electrical connection relationship between the first light group and the second light group and the circuit board, that is, the first light group and the second light group are powered by the circuit board for lighting and off control. Setting a light group on the circuit board to make it energized and emit light belongs to the conventional technical means in the art, and the implementation method thereof will not be described in detail in this application. Those skilled in the art can make reasonable settings according to the actual situation.

[0078] In an embodiment, the circuit board 51 is a long strip circuit board 51. The first light group 52 includes a plurality of first light beads, and the plurality of first light beads are arranged along the length direction of the circuit board 51. The second light group 53 includes a plurality of second light beads, and the plurality of second light beads are arranged along the length direction of the circuit board 51. The first light group 52 and the second light group 53 are distributed along the width direction of the circuit board 51. In other words, two rows of light beads are integrated on one side of the circuit board 51 for illuminating the first light guide plate 31 and the second light guide plate 41 respectively. In other embodiments, the first light group 52 and the second light group 53 can also be light strips, and the two light strips are installed side by side on the circuit board 51.

[0079] In other embodiments, the light source assembly 50 can also include a plurality of circuit boards 51. The first light group 52 and the second light group 53 are arranged on different circuit boards 51. The circuit board 51 provided with the first light beads and the circuit board 51 provided with the second light group 53 can also be arranged on different sides. For example, the first light group 52 is arranged on the lower side of the first light guide plate 31, and the second light group 53 is arranged on the upper side of the second light guide plate 41.

[0080] Please continue to refer to Figure 8 The circuit board 51 in the light source assembly 50 is a double-sided circuit board 51, that is, copper traces are arranged on both sides of the circuit board 51, and electronic components can be installed on both sides. An insulating layer can be configured in the middle of the double-sided circuit board 51 to achieve electrical isolation on both sides.

[0081] The light source assembly 50 includes a socket 54, and the socket 54 is arranged on the side of the circuit board 51 facing away from the first light group 52 and the second light group 53. Refer to Figure 8 On one side of the circuit board 51, the first light group 52 and the second light group 53 are arranged side by side, and on the other side of the circuit board 51, the socket 54 is arranged. The socket 54 is used to connect the power supply and the controller. In this way, the effect of providing a backlight source for lighting on one side of the light source assembly 50 and connecting the external power supply and the controller to the other side to realize the power supply and driving of the light source assembly 50 can be achieved. The light source assembly 50 has a simple and compact structure, is convenient for assembly, and is convenient for wiring during installation. Among them, the light beads in the first light group 52, the light beads in the second light group 53, and the socket 54 can be soldered to the circuit board 51 by SMT soldering process, or can be soldered to the circuit board 51 by other processes.

[0082] Please refer toFigure 1 , Figure 3 , Figure 6 , Figure 11 , the housing 10 includes a first outer frame 101. The first outer frame 101 is provided with a receiving groove, and the receiving groove can be used to provide an installation space for the light source assembly 50. If a sound device such as a speaker needs to be configured for a double-sided display screen, the speaker etc. can also be installed in the receiving groove of the lower outer frame. A notch communicating with the receiving groove is provided on the inner side of the first outer frame 101, and the light source assembly 50 is disposed in the receiving groove of the first outer frame 101. Refer to Figure 6 , taking the first outer frame 101 as the lower outer frame of the double-sided display screen as an example, a part of the lower sides of the first component 30, the reflective sheet 20, and the second component 40 extends into the receiving groove of the first outer frame 101 through the notch, the light source assembly 50 is installed in the receiving groove, and the circuit board 51 is connected to the first outer frame 101 by means of fastening with fasteners, snap fixation, etc.

[0083] Please continue to refer to Figure 1 , Figure 3 , Figure 6 , the receiving groove of the first outer frame 101 provides an installation space for devices such as the light source assembly 50 and the speaker. In order to facilitate connection with an external power supply or other external devices, the first outer frame 101 is also provided with a wiring port for inserting the connector of an external device.

[0084] Refer to Figure 1 , Figure 3 , the housing 10 includes a first outer frame 101 and a second outer frame 102. The first outer frame 101 and the second outer frame 102 are connected to enclose the periphery of the display module. In an embodiment, the first outer frame 101 is used as the lower outer frame, the outer shape of the second outer frame 102 is U-shaped, and the second outer frame 102 is used as the left outer frame, the upper outer frame, and the right outer frame. After the display module is assembled, it can be inserted into the second outer frame 102 from the side of the second outer frame 102, and then the first outer frame 101 is installed on the second outer frame 102 for edge sealing. The assembly is simple, and the housing 10 can provide good support for the display module.

[0085] In the case of canceling the backplane, in order to provide the overall rigidity and structural strength of the whole machine, both the first light guide plate 31 and the second light guide plate 41 are glass light guide plates. The light guide plates in the display screens in the related art are generally MS light guide plates or PMMA light guide plates, while the glass light guide plate has the characteristics of high hardness, high strength, and good rigidity. In the double-sided display screens in the related art, the overall rigidity of the whole machine is provided by the backplane. In the present invention, the backplane is canceled, and the glass light guide plate is used as the first light guide plate 31 and the second light guide plate 41. The first light guide plate 31 and the first light guide plate 31 can not only support each other, but also reliably support the display panel and the optical film, so as to improve the overall structural rigidity and rigidity of the double-sided display screen in the case of canceling the backplane, and ensure its structural strength while thinning the double-sided display screen.

[0086] Among them, the MS light guide plate is made of a copolymer synthesized from PMMA (polymethyl methacrylate) and PS (polystyrene) as the main raw materials. The PMMA light guide plate is a light guide plate made of optical grade acrylic / PC sheet, while the glass light guide plate is mainly made of optical glass material.

[0087] In other embodiments, the first light guide plate 31 and the second light guide plate 41 may also be MS light guide plates, PMMA light guide plates, etc.

[0088] Please continue to refer to Figure 1 , Figure 11 The frame 10 is in the shape of a ring connected end to end. The frame 10 has frame openings on the front and rear sides. The front frame opening is used to expose the first display panel 33, and the rear frame opening is used to expose the second display panel 43, so as to realize the display of the front and rear sides. The cross section of the frame 10 is U-shaped. In the case of eliminating the back plate, the frame 10 with a cross section approximately U-shaped is configured, and the display module can be limited in front and back and supported and protected. The peripheral limit and support protection can also be performed, and the thickness and overall volume of the double-sided display screen can be reduced while taking into account the structural strength of the whole machine.

[0089] Reference Figure 6 , Figure 7 The cross section of the frame 10 is U-shaped, that is, the frame 10 includes a first face frame portion 11, a side frame portion 12 and a second face frame portion 13. The first face frame portion 11 is connected to one side of the side frame portion 12, and the second face frame portion 13 is connected to the other side of the side frame portion 12. A groove of a shape similar to "U" or "凵" ​​is defined between the first face frame portion 11, the side frame portion 12 and the second face frame portion 13. A notch connected to the groove is provided on one side of the frame 10 close to the center of the double-sided display screen.

[0090] During assembly, in the display module, the edge of the first component 30 extends into the groove through the notch, and the edge of the second component 40 extends into the groove through the notch. Figure 6 , Figure 7 Thus, the first face frame 11 is located on the side of the first display panel 33 away from the first light guide plate 31, and the second face frame 13 is located on the side of the second display panel 43 away from the second light guide plate 41. Exemplarily, the first face frame 11 is located on the front side of the display module to limit the edge area of ​​the front side of the display module; the second face frame 13 is located on the rear side of the display module to limit the edge area of ​​the rear side of the display module; the side frame 12 is located on the outer side of the display module away from the center of the display screen to limit the horizontal outer side of the display module.

[0091] Please continue to refer to Figures 2 to 7In order to limit the movement of the first display panel 33 and the second display panel 43 during assembly, transportation and use, and improve the stability of the first display panel 33 and the second display panel 43. The display module includes a first limiting structure 34 and a second limiting structure 44. The first limiting structure 34 is used to limit the horizontal position of the first display panel 33 ( Figure 5 The second limiting structure 44 is used to limit the horizontal position of the second display panel 43 ( Figure 5 The x and y planes in the diagram). Figures 4 to 7 The outer side of the first limiting structure 34 is abutted against the frame body 10, and the inner side of the first limiting structure 34 is limitedly matched with the outer side of the first display panel 33 in the x direction and / or y direction; the second limiting structure 44 is abutted against the frame body 10, and the inner side of the second limiting structure 44 is limitedly matched with the outer side of the second display panel 44 in the x direction and / or y direction.

[0092] During assembly, before placing the first display panel 33, the first limiting structure 34 is first fixed to the side of the first optical film 32 away from the reflective sheet 20 by means of gluing or the like, and the inner wall of the first limiting structure 34 defines a first panel area for placing the first display panel 33, and then the first display panel 33 is placed in the panel area. Of course, in the subsequent assembly of the frame 10, transportation of the double-sided display screen, etc., the first limiting structure 34 serves to limit the horizontal position of the first display panel 33 to improve its stability and prevent it from shaking and being damaged. Similarly, the second limiting structure 44 has a similar function.

[0093] In this embodiment, the first limiting structure 34 fixes the first optical film 32 by pasting or the like, and the second limiting structure 44 fixes the second optical film 42 by pasting or the like. In other embodiments, the first limiting structure 34 may also be fixed to the first light guide plate 31 or the reflective sheet 20 by pasting or the like, and the second limiting structure 44 may also be fixed to the second light guide plate 41 or the reflective sheet 20 by pasting or the like.

[0094] In order to protect the first display panel 33 and the second display panel 43, the first limiting structure 34 and the second limiting structure 44 can be but not limited to elastic structures, and provide buffer protection through the elastic structures. Exemplarily, the first limiting structure 34 and the second limiting structure 44 are both silicone structures.

[0095] Please continue to refer to Figure 2 , Figure 4 , Figure 5The first limiting structure 34 includes at least four L-shaped first limiting blocks 341, which are arranged corresponding to the four corners of the first display panel 33, the outer side of each first limiting block 341 abuts against the frame 10, and the inner side of each first limiting block 341 is limited and matched with the outer side of the first display panel 33 in the x direction and the y direction; the second limiting structure 44 includes at least four L-shaped second limiting blocks 441, which are arranged corresponding to the four corners of the second display panel 43, the outer side of each second limiting block 342 abuts against the frame 10, and the inner side of each second limiting block 342 is limited and matched with the outer side of the second display panel 43 in the x direction and the y direction. Four L-shaped limiting blocks are arranged at the four corners. While the limiting blocks limit the position of the display panel, the display panel can be quickly assembled through the four-corner positioning. The L-shaped limiting blocks at the four corners also protect the four corners of the display panel that are easily damaged.

[0096] In other embodiments, the first limiting structure 34 may also be a plurality of first limiting bars, which are respectively arranged on the upper, lower, left and right sides of the first display panel 33. The second limiting structure 44 may also be a plurality of second limiting bars, which are respectively arranged on the upper, lower, left and right sides of the second display panel 43.

[0097] In one embodiment, the first limiting structure 34 and the second limiting structure 44 can also be used to prevent the frame 10 from directly contacting the display panel to protect the display panel. The display module includes a first limiting structure 34, which is fixed between the first face frame 11 and the reflective sheet 20, the first face frame 11 abuts against the side of the first limiting structure 34 away from the reflective sheet 20, and the thickness of the first limiting structure 34 is greater than the thickness of the first display panel 33, so that the first face frame 11 and the first display panel 33 are gap-matched; the display module includes a second limiting structure 44, which is fixed between the second face frame 13 and the reflective sheet 20, the second face frame 13 abuts against the side of the second limiting structure 44 away from the reflective sheet 20, and the thickness of the second limiting structure 44 is greater than the thickness of the second display panel 43, so that the second face frame 13 and the second display panel 43 are gap-matched.

[0098] Exemplarily, the first limiting structure 34 and the first display panel 33 are both arranged on the side of the first optical film 32 away from the reflective sheet 20, and the thickness of the first limiting structure 34 is greater than the thickness of the first display panel 33. In this way, after the frame 10 is assembled, a certain gap is still retained between the first surface frame portion 11 of the frame 10 and the surface of the first display panel 33. When the frame 10 is subjected to external impact, the frame 10 will not directly transfer the pressure to the first display panel 33, thereby protecting the first display panel 33. Similarly, the second limiting structure 44 and the second display panel 43 are configured in a similar manner.

[0099] In one embodiment, one side surface of the first light guide plate 31 close to the reflector 20 is the first light-emitting surface 311, one side surface of the first light guide plate 31 away from the reflector 20 is the third light-emitting surface, one outer side surface of the first light guide plate 31 is the first light-incident surface 312, and the first light-incident surface 312 is located between the first light-emitting surface 311 and the third light-emitting surface. One side surface of the second light guide plate 41 close to the reflector 20 is the second light-emitting surface 411. One side surface of the second light guide plate 41 away from the reflector 20 is the fourth light-emitting surface, one outer side surface of the second light guide plate 41 is the second light-incident surface 412, and the second light-incident surface 412 is located between the second light-emitting surface 411 and the fourth light-emitting surface.

[0100] In order to efficiently utilize the light rays of the light source, the center of the light-emitting surface of the first lamp group 52 is directly opposite to the center of the first light-incident surface 312, and the center of the light-emitting surface of the second lamp group 53 is directly opposite to the center of the second light-incident surface 412.

[0101] In the present utility model, the light rays emitted by the first lamp group 52 can enter the first light guide plate 31 through the first light-incident surface 312. The first light guide plate 31 is configured to emit some of the light rays inside it towards the reflector 20, and the reflector 20 is configured to reflect at least some of the light rays towards the direction of the first display panel 33. Similarly, the light rays emitted by the second lamp group 53 can enter the second light guide plate 41 through the second light-incident surface 412. The second light guide plate 41 is configured to emit some of the light rays inside it towards the reflector 20, and the reflector 20 is configured to reflect at least some of the light rays towards the direction of the second display panel 43.

[0102] Refer to Figure 9 , in order to enable the light rays to enter from the light-incident surface on the side of the light guide plate and then exit from the light guide plate, a plurality of first light-adjusting portions 3111 are provided on the first light-emitting surface 311 on the side of the first light guide plate 31 close to the reflector 20, and a plurality of second light-adjusting portions 4111 are provided on the second light-emitting surface 411 on the side of the second light guide plate 41 close to the reflector 20. The first light-adjusting portion 3111 can be a convex portion or a concave portion, and the second light-adjusting portion 4111 can be a convex portion or a concave portion, as long as the refractive index at the location of the light-adjusting portion is different from the refractive index of the light guide plate itself and the refractive index of air. Exemplarily, the first light-adjusting portion 3111 is a dot formed on the first light-emitting surface 311 by printing or laser technology, and the second light-adjusting portion 4111 is a dot formed on the second light-emitting surface 411 by printing technology.

[0103] It can be understood that, as Figure 10As shown, when light enters the light guide plate from the light incident surface on the side of the light guide plate, without the participation of the light regulating part, after the light enters the light guide plate, total internal reflection will occur in the light guide plate because the refractive index of the light guide plate is greater than that of air, and part of the light cannot exit the light guide plate, resulting in the inefficient utilization of the light emitted by the light source assembly 50. After the first light regulating part 3111 and the second light regulating part 4111 are respectively arranged on the first light emitting surface 311 and the second light emitting surface 411, the refractive index of the light regulating part is between that of air and the light guide plate. The light regulating part will destroy the total internal reflection, and part of the light will exit from the first light regulating part 3111 and the second light regulating part 4111 and shoot towards the reflector 20. After the reflector 20 reflects the light, the light re-enters the light guide plate and finally exits through the optical film, the display panel, etc. Through the action of the light guide plate light regulating part and the reflector 20, the light that originally undergoes total internal reflection in the light guide plate is redirected to exit the light guide plate, improving the light utilization rate and enhancing the imaging effect.

[0104] Please refer to Figure 11 , which schematically shows the structure of the double-sided display device. The double-sided display device includes a double-sided display screen and other electronic devices, and is connected to the external electronic devices through the double-sided display device to provide more functions.

[0105] Optionally, the double-sided display device further includes a controller 60. Some electronic components are integrated in the controller 60, simplifying the circuit part in the double-sided display screen and reducing the number of electronic components accommodated in the double-sided display screen, which is beneficial to the thin and light design of the double-sided display screen. Exemplarily, when the space in the usage place such as a store is limited, the double-sided display screen can be placed in the limited display space, and the controller 60 is set in other non-display spaces. The double-sided display screen is connected to the controller 60 through the ground and two wires, enabling the double-sided display screen to provide the double-sided display function in a narrow space.

[0106] In one embodiment, the controller 60 is internally equipped with main electronic components such as a power supply board and a main board. The controller 60 is connected to the double-sided display screen through an electrical connection line 70 to supply power and transmit data to the double-sided display screen through the controller 60, so as to realize the functions of displaying content and playing audio and video on the double-sided display screen.

[0107] In one embodiment, the controller 60 is provided with a superlink interface, and the double-sided display screen is provided with a superlink interface. The electrical connection line 70 for connecting the double-sided display screen and the controller 60 is a superlink connection line 70. The superlink connection line 70 is also called a superlink data line and a superlink adapter cable. Among them, the SuperLink interface is mainly used for transmitting audio and video and can be used to connect external devices such as a computer, a DVD, and a game console.

[0108] In other embodiments, if the double-sided display device is to be connected to the controller 60, two cables (FFC cables) are required to connect the display panel (OC) and the thin film transistor liquid crystal display controller (TCON board), and the power board in the controller 60 is also connected to the circuit board 51 of the light source assembly 50 through the backlight to power the light source assembly 50, and the circuit is complicated. In this embodiment, a superlink cable is used in conjunction with the controller 60, and the functions of power supply and input signal can be realized through a single connecting wire.

[0109] The double-sided display device of the present invention adopts an external controller 60, optimizes the material of the connecting wire 70, and uses a superlink wire to cooperate with the controller 60, so as to simplify the complex circuit part of the whole double-sided display screen, which is conducive to the lightweight design of the double-sided display screen.

[0110] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0111] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0112] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0113] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A double-sided display screen, characterized in that, It includes a display module and also includes a frame (10) surrounding the outside of the display module; The display module includes: a reflective sheet (20); a first component (30), including a first light guide plate (31) provided on one side of the reflective sheet (20), and a first display panel (33) provided on the side of the first light guide plate (31) facing away from the reflective sheet (20); a second component (40), including a second light guide plate (41) provided on the side of the reflective sheet (20) facing away from the first light guide plate (31), and a second display panel (43) provided on the side of the second light guide plate (41) facing away from the reflective sheet (20); a light source component (50), including a first lamp group (52) provided at the first light receiving end of the first light guide plate (31), and a second lamp group (53) provided at the second light receiving end of the second light guide plate (41), the first light receiving end is located on the side of the first light guide plate (31) facing the frame (10), and the second light receiving end is located on the side of the second light guide plate (41) facing the frame (10); The frame (10) includes a first face frame part (11), a side frame part (12) and a second face frame part (13). The first face frame part (11), the side frame part (12) and the second face frame part (13) are connected to define a groove (100). A notch communicating with the groove (100) is formed on the side of the frame (10) close to the center of the double-sided display screen; a part of the first component (30) extends into the groove (100) through the notch, and the first face frame part (11) is located on the side of the first display panel (33) facing away from the first light guide plate (31); a part of the second component (40) extends into the groove (100) through the notch, and the second face frame part (13) is located on the side of the second display panel (43) facing away from the second light guide plate (41).

2. The double-sided display screen according to claim 1, wherein The frame (10) is provided with a groove (100), and the edge of the reflective sheet (20), the edge of the first component (30), the edge of the second component (40) and the light source component (50) are arranged in the groove (100).

3. The double-sided display screen according to claim 1, characterized in that, The first component (30) further includes a first optical film (32), and the first optical film (32) is provided between the first light guide plate (31) and the first display panel (33); The second component (40) further includes a second optical film (42), and the second optical film (42) is provided between the second light guide plate (41) and the second display panel (43).

4. The double-sided display screen according to claim 1, characterized in that, The light source component (50) includes a circuit board (51), and the first lamp group (52) and the second lamp group (53) are provided on the same side of the circuit board (51); the circuit board (51) is connected to the frame (10).

5. The double-sided display screen according to claim 4, characterized in that The light source assembly (50) includes a socket (54). The circuit board (51) is a double-sided circuit board (51), and the socket (54) is disposed on a side of the circuit board (51) facing away from the first lamp group (52) and the second lamp group (53).

6. The double-sided display screen according to claim 1, wherein The first light guide plate (31) is a glass light guide plate, and the second light guide plate (41) is a glass light guide plate.

7. The double-sided display screen according to any one of claims 1 to 6, characterized in that, The display module includes a first limiting structure (34). The outer side of the first limiting structure (34) is abutted against the frame body (10), and the inner side of the first limiting structure (34) is in limiting cooperation with the first display panel (33) in the x-direction and / or the y-direction; The display module includes a second limiting structure (44). The outer side of the second limiting structure (44) is abutted against the frame body (10), and the inner side of the second limiting structure (44) is in limiting cooperation with the second display panel (43) in the x-direction and / or the y-direction.

8. The double-sided display screen according to claim 7, characterized in that, The first limiting structure (34) includes at least four L-shaped first limiting blocks (341). The four first limiting blocks (341) are correspondingly disposed outside the four corners of the first display panel (33). The outer side of each first limiting block (341) is abutted against the frame body (10), and the inner side of each first limiting block (341) is in limiting cooperation with the first display panel (33) in the x-direction and the y-direction; The second limiting structure (44) includes at least four L-shaped second limiting blocks (441). The four second limiting blocks (441) are correspondingly disposed outside the four corners of the second display panel (43). The outer side of each second limiting block (441) is abutted against the frame body (10), and the inner side of each second limiting block (441) is in limiting cooperation with the second display panel (43) in the x-direction and the y-direction.

9. The double-sided display screen according to claim 1, characterized in that, The display module includes a first limiting structure (34). The first limiting structure (34) is fixed between the first frame portion (11) and the reflector (20); the first frame portion (11) abuts against a side of the first limiting structure (34) facing away from the reflector (20), and the thickness of the first limiting structure (34) is greater than the thickness of the first display panel (33) so that the first frame portion (11) is in clearance fit with the first display panel (33); The display module includes a second limiting structure (44). The second limiting structure (44) is fixed between the second frame portion (13) and the reflector (20); the second frame portion (13) abuts against a side of the second limiting structure (44) facing away from the reflector (20), and the thickness of the second limiting structure (44) is greater than the thickness of the second display panel (43) so that the second frame portion (13) is in clearance fit with the second display panel (43).

10. The double-sided display screen according to any one of claims 1 to 6, characterized in that, One side surface of the first light guide plate (31) facing the reflector (20) is a first light-emitting surface (311), and a plurality of first light-adjusting portions (3111) are provided on the first light-emitting surface (311); One side surface of the second light guide plate (41) facing the reflecting sheet (20) is a second light-emitting surface (411), and a plurality of second light-adjusting parts (4111) are arranged on the second light-emitting surface (411).

11. A double-sided display device, characterized in that, Including: The double-sided display screen according to any one of claims 1 to 10.

12. The double-sided display device according to claim 11, wherein It further includes a controller (60), and the controller (60) is electrically connected to the double-sided display screen through an electrical connection line (70).

13. The double-sided display device according to claim 12, wherein A power supply board and a main board are arranged in the controller (60), and the electrical connection line (70) is a superlink connection line.

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