Double-sided display device

Abstract

The present application provides an embodiment belonging to display technology, providing a double-sided display device, wherein a light-emitting unit is arranged on the peripheral side of a light-guiding module to provide a light source to the light-guiding module; an inner wall of the first frame of the middle frame assembly is provided with an inner concave portion for accommodating the light-emitting unit, and the inner concave portion has a first limiting wall and a second limiting wall, and along the first direction, the first frame is provided with a first limiting wall and a first step portion in sequence, the first limiting wall is connected to the first side of the light-guiding module to constrain the light-guiding module to move along the first direction, and the first step portion is connected to the first panel; along the second direction, the first frame is provided with a second limiting wall and a second step portion in sequence, the second limiting wall is connected to the second side of the light-guiding module to constrain the light-guiding module to move along the second direction, and the second step portion is connected to the second panel; along the third direction, the first frame is provided with an accommodating cavity for accommodating electrical components. The present application can solve the problem that the use of a common panel with a lower cost leads to a large overall thickness and a complex structure leading to a higher cost.

Description

Technical Field

[0001] The embodiments of the present application relate to display technology, and more particularly to a double-sided display device. Background Art

[0002] Double-sided display devices are devices that can display images on both sides of the display device. By displaying images on both sides, the double-sided information push function can be realized. Double-sided display devices have a wide range of applications. For example, they can be used in business halls of window industries such as the communications industry, the financial industry, and the transportation industry, as well as in public places with large traffic such as airports, railway stations, subway stations, and canteens.

[0003] In the related technology, a type of double-sided display device is based on the advantages of OLED (Organic Light-Emitting Diode) panels, such as wide color gamut, high contrast, self-luminescence, and light weight and foldability. Two OLED panels are set back to back to achieve a double-sided display function. However, its cost is high and its service life is short.

[0004] Another type of double-sided display device uses a common panel with lower cost. That is, two display panels are pasted together to realize display in two directions respectively. Among them, the two display panels can share a back panel. A set of light bars, a set of reflective sheets and a set of light guide plates are provided on both sides of the back panel. However, the overall thickness of the double-sided display device is large, and the internal structure is complex, which easily leads to high processing and assembly costs. Utility Model Content

[0005] The embodiment of the present application provides a double-sided display device, which can solve the problem that the double-sided display device uses a low-cost ordinary panel, resulting in a large overall thickness and a complex structure resulting in high cost.

[0006] In a first aspect, an embodiment of the present application provides a double-sided display device, which includes: a light guide module;

[0007] A first panel, the first panel is located at one side of the light guide module along a first direction;

[0008] A second panel, the second panel is located at one side of the light guide module along the second direction;

[0009] A light emitting unit, the light emitting unit being disposed on a peripheral side of the light guide module, the light emitting unit being configured to provide a light source for the light guide module;

[0010] A middle frame assembly, the middle frame assembly at least comprising a first frame body, the inner wall of the first frame body is provided with an inner concave portion capable of accommodating the light-emitting unit, the inner concave portion has a first limiting wall and a second limiting wall, along the first direction, the first frame body is sequentially provided with the first limiting wall and a first step portion, the first limiting wall is connected to a first side of the light guide module to constrain the light guide module to move along the first direction, and the first step portion is connected to the first panel to fix the first panel;

[0011] Along the second direction, the first frame is provided with the second limiting wall and the second step portion in sequence, the second limiting wall is connected to the second side of the light guide module to constrain the light guide module to move along the second direction, and the second step portion is connected to the second panel to fix the second panel;

[0012] Along the third direction, the first frame body is provided with a receiving cavity, and the receiving cavity can receive electrical components.

[0013] In the embodiment of the present application, the light guide module can guide the light source to the first panel and the second panel respectively, so that the first panel can display the first picture and the second panel can display the second picture. Since the double-sided display device of the embodiment of the present application can realize the display function of the first panel and the second panel through a set of light guide modules, the double-sided display device can be designed to be thinner, and the overall weight of the double-sided display device can be reduced to improve portability.

[0014] In addition, the middle frame assembly of the embodiment of the present application is also provided with a receiving cavity for receiving electrical components. Therefore, the middle frame assembly does not need to be provided with an additional structure for fixing or receiving electrical components, which can reduce processing and assembly costs.

[0015] In some embodiments of the present application, the first frame includes a fixing portion, the inner recess is arranged on a side of the fixing portion facing the light guide module, and the accommodating cavity is located on a side of the fixing portion facing away from the inner recess.

[0016] In the embodiment of the present application, the inner recessed portion of the first frame can be used to fix the light emitting unit. The light emitting unit is arranged to correspond to the outer periphery of the light guide module so that the light source is emitted from the side of the light guide module to the light guide module, and the light source is emitted to the first panel and the second panel through the light guide module, thereby realizing the display function of the first panel and the second panel.

[0017] In some embodiments of the present application, the first frame includes an outer frame, the outer frame is arranged on the fixing portion, and the outer frame and the fixing portion surround and form the accommodating cavity for accommodating the electrical component.

[0018] In the embodiment of the present application, the outer frame can be provided to fix the COF. Furthermore, the receiving cavity formed by the outer frame and the fixing portion can be used to accommodate electrical components such as boards of the double-sided display device.

[0019] In some embodiments of the present application, the first frame includes a heat sink, which is integrally formed on the first frame, and the heat sink is disposed corresponding to the light-emitting unit to dissipate heat for the light-emitting unit.

[0020] In the embodiment of the present application, a larger heat dissipation surface area can be provided by providing a heat sink. The light-emitting unit is prone to generate heat during operation. Therefore, by providing a heat sink, the heat on the light-emitting unit can be removed through the larger heat dissipation surface area of ​​the heat sink itself, which is beneficial to improving the heat dissipation efficiency of the light-emitting unit and reducing the possibility of affecting the working performance of the light-emitting unit due to untimely heat dissipation.

[0021] In some embodiments of the present application, the fixing portion is provided with a hollow portion, the hollow portion penetrates the fixing portion along the fourth direction, and along the third direction, the hollow portion and the inner recessed portion are located on the same side of the fixing portion;

[0022] The hollow portion is provided on one side of the inner concave portion along the first direction, and / or the hollow portion is provided on one side of the inner concave portion along the second direction.

[0023] The hollow portion can be provided to reduce the weight of the middle frame assembly, thereby facilitating the reduction of the weight of the double-sided display device.

[0024] In some embodiments of the present application, the middle frame assembly includes a second frame body opposite to the first frame body along a third direction, the first frame body and the second frame body are respectively located on both sides of the light guide module, and the inner wall of the second frame body is provided with the recessed portion so as to fix the two ends of the light guide module along the third direction through the recessed portion of the first frame body and the recessed portion of the second frame body.

[0025] In the embodiment of the present application, the first frame and the second frame can be used to fix the light guide module, the first panel and the second panel. The light emitting unit can be fixed in the inner recess. The light emitting unit corresponds to the outer periphery of the light guide module, so that the light source is emitted from the side of the light guide module to the light guide module, and the light source is emitted to the first panel and the second panel through the light guide module, thereby realizing the display function of the first panel and the second panel.

[0026] In some embodiments of the present application, the middle frame assembly includes a third frame body and a fourth frame body opposite to each other along a fourth direction, the third frame body and the fourth frame body are respectively arranged on both sides of the light guide module, the third frame body and the fourth frame body are connected to the first frame body and the second frame body, and the third frame body and the fourth frame body are respectively provided with the recessed parts to fix the two ends of the light guide module along the fourth direction through the recessed parts of the third frame body and the recessed parts of the fourth frame body.

[0027] In the embodiment of the present application, the first frame, the second frame, the third frame and the fourth frame can be used to support the edges of the first panel and the second panel to improve the support stability of the first panel and the second panel. In addition, the first frame, the second frame, the third frame and the fourth frame can be provided with inner recesses to fix the edges of the light guide module.

[0028] In some embodiments of the present application, the first frame body is an integrally formed structure; and / or the second frame body is an integrally formed structure; and / or the third frame body is an integrally formed structure; and / or the fourth frame body is an integrally formed structure.

[0029] In the embodiment of the present application, at least one of the first frame body, the second frame body, the third frame body and the fourth frame body can be formed by an extrusion molding process to reduce processing costs and improve production efficiency.

[0030] In some embodiments of the present application, the second frame, the third frame and the fourth frame have the same structure.

[0031] In the embodiment of the present application, by setting the second frame, the third frame, and the fourth frame to have the same structure, the second frame, the third frame, and the fourth frame can share a set of extrusion molding dies. Therefore, the middle frame assembly of the double-sided display device in the embodiment of the present application can save the mold opening cost of the extrusion molding dies, which is conducive to saving the processing cost of the double-sided display device.

[0032] In a second aspect, an embodiment of the present application provides a double-sided display device, comprising a light guide module, a first panel, a second panel, a light emitting unit and a middle frame assembly, wherein the first panel is located on one side of the light guide module along a first direction, and the second panel is located on one side of the light guide module along a second direction, and the middle frame assembly comprises at least a first frame body, wherein an inner wall of the first frame body is provided with an inner recessed portion capable of accommodating the light emitting unit, so that the light emitting unit is located on the peripheral side of the light guide module and provides a light source for the light guide module, and the inner recessed portion has a first limiting wall and a second limiting wall;

[0033] Wherein, along the first direction, the first frame is provided with the first limiting wall and the first step portion in sequence, the first limiting wall is connected to the first side of the light guide module to constrain the light guide module to move along the first direction, and the first step portion is connected to the first panel to fix the first panel;

[0034] Along the second direction, the first frame is provided with the second limiting wall and the second step portion in sequence, the second limiting wall is connected to the second side of the light guide module to constrain the light guide module to move along the second direction, and the second step portion is connected to the second panel to fix the second panel;

[0035] Along the third direction, the first frame body is provided with a receiving cavity, and the receiving cavity can receive an electrical component. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0037] Figure 1 This is a schematic diagram of the three-dimensional structure of a double-sided display device according to an embodiment of the present application;

[0038] Figure 2 A schematic side view of a double-sided display device according to an embodiment of the present application;

[0039] Figure 3 This is a schematic diagram of the exploded structure of a double-sided display device according to an embodiment of the present application;

[0040] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure along the MM direction;

[0041] Figure 5 for Figure 4 The enlarged structure diagram at A in the middle;

[0042] Figure 6 for Figure 4 The enlarged structure diagram at B in the middle;

[0043] Figure 7 This is a schematic diagram of the exploded structure of a middle frame assembly according to an embodiment of the present application;

[0044] Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure along the NN direction;

[0045] Fig. 9 for Figure 8 The enlarged schematic diagram of the center C;

[0046] Fig.10 for Figure 8 Enlarged schematic diagram of point D in the middle.

[0047] Description of reference numerals:

[0048] 100-Double-sided display device;

[0049] 110-middle frame assembly; 110a-inner concave portion; 110b-hollow portion; 101-first step portion; 1011-first bottom wall; 1012-first side wall; 102-second step portion; 1021-second bottom wall; 1022-second side wall; 103-first limiting wall; 104-second limiting wall; 111-first frame; 1111-fixing portion; 1112-heat sink; 1113-outer frame; 1113a-accommodating cavity; 112-second frame; 113-third frame; 114-fourth frame;

[0050] 120 - first panel; 121 - first display panel; 122 - first touch panel;

[0051] 130 - second panel; 131 - second display panel; 132 - second touch panel;

[0052] 140-light emitting unit;

[0053] 150-light guide module; 151-light guide plate; 152-diaphragm;

[0054] X-first direction; Y-second direction; Z-third direction; K-fourth direction. DETAILED DESCRIPTION

[0055] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0056] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0057] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0058] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0062] Display devices include single-sided display devices and double-sided display devices. Although single-sided display devices are the most commonly used display devices on the market, double-sided display devices are needed in many fields to display images at multiple angles. For example, double-sided display devices can be used in business halls of window industries such as the communications industry, the financial industry, and the transportation industry, as well as in public places with large traffic such as airports, railway stations, subway stations, and canteens.

[0063] The double-sided display devices on the market are based on the advantages of OLED panels, such as wide color gamut, high contrast, self-luminescence, and light weight and foldability. Two OLED panels are set back to back to achieve double-sided display function. However, their cost is high and their service life is short.

[0064] Therefore, in order to reduce the problem of increased cost and shorter service life of double-sided display devices caused by the use of OLED panels, low-cost ordinary panels are usually used in related technologies. That is, two display panels are pasted together to realize display in two directions respectively. Among them, the two display panels can share a backplane. A set of light bars, a set of reflective sheets and a set of light guide plates are provided on both sides of the backplane. However, the overall thickness of the double-sided display device is large, and the internal structure is complex, which easily leads to high processing and assembly costs.

[0065] Specifically, since the light bar, reflective sheet and light guide plate are all arranged on the back panel, on the one hand, a variety of fixing structures need to be arranged on the back panel for fixing the light bar, reflective sheet and light guide plate, and on the other hand, the assembly relationship between the panel, back panel, light bar, reflective sheet and light guide plate is also relatively complicated, which easily leads to an increase in processing cost and assembly cost.

[0066] Based on the above technical problems, the applicant has improved the structure of the existing double-sided display device. In the embodiment of the present application, a group of light guide modules can be used to guide the light source to the first panel and the second panel respectively, so as to realize the display function of the first panel and the second panel. Therefore, along the thickness direction of the double-sided display device, it can include the first panel, the second panel and a group of light guide modules, and there is no need to set up an additional back plate and other light guide components between the first panel and the second panel. Therefore, on the one hand, it can be conducive to the thinning of the double-sided display device, and on the other hand, it can simplify the internal structure of the double-sided display device, which is conducive to saving the processing cost and assembly cost of the double-sided display device.

[0067] The double-sided display device 100 provided in the present application is described below with reference to the accompanying drawings and in combination with specific embodiments.

[0068] Figure 1 FIG. 1 is a schematic diagram of a three-dimensional structure of a double-sided display device 100 according to an embodiment of the present application. Figure 2 Schematic diagram of the side structure of a double-sided display device 100 according to an embodiment of the present application. Figure 3 FIG. 1 is a schematic diagram of an exploded structure of a double-sided display device 100 according to an embodiment of the present application. Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure along the MM direction. Figure 5 for Figure 4 Enlarged structural diagram of point A in the middle. Figure 6 for Figure 4 Enlarged structural diagram of point B in the middle.

[0069] See also Figures 1 to 6 As shown, the double-sided display device 100 may include a first panel 120 .

[0070] The first panel 120 may be configured to display a first screen. Furthermore, the first panel 120 may also have a touch function. A user may touch the first panel 120 with a finger to display the required information through the first panel 120, thereby realizing interaction between the user and the first panel 120.

[0071] In some embodiments, the double-sided display device 100 may include a second panel 130 .

[0072] The second panel 130 may be configured to display a second screen. The second panel 130 may also have a touch function. The user may touch the second panel 130 with a finger to display the required information through the second panel 130, thereby realizing the interaction between the user and the second panel 130.

[0073] The light emitting side of the first panel 120 and the light emitting side of the second panel 130 face opposite directions for user operation.

[0074] In some embodiments, the double-sided display device 100 may include a light guide module 150. The light guide module 150 may guide the light source to the first panel 120 and the second panel 130, respectively, so that the first panel 120 can display the first picture and the second panel 130 can display the second picture. Since the double-sided display device 100 of the embodiment of the present application can realize the display function of the first panel 120 and the second panel 130 through a set of light guide modules 150, the thinning design of the double-sided display device 100 can be realized, and the overall weight of the double-sided display device 100 can be reduced, thereby improving the portability.

[0075] In some embodiments, the double-sided display device 100 may include a middle frame assembly 110. The middle frame assembly 110 may be configured to fix the light guide module 150, the first panel 120 and the second panel 130. The middle frame assembly 110 may include at least a first frame body 111. An inner concave portion 110a for accommodating electrical components may be provided on the inner wall of the first frame body 111. The inner concave portion has a first limiting wall 103 and a second limiting wall 104.

[0076] In the embodiment of the present application, the first direction X and the second direction Y may refer to the thickness direction of the double-sided display device 100, and the first direction X and the second direction Y are opposite. Since the middle frame assembly 110 can be used to fix the first panel 120, the light guide module 150 and the second panel 130, the double-sided display device 100 may not need to be additionally configured with a backplane. In actual production, the backplane is usually an open mold part, that is, it is necessary to set a mold for the backplane to process the backplane through the mold. However, the cost of setting the mold easily leads to a higher overall cost of the double-sided display device 100. Therefore, in the embodiment of the present application, the fixation between the various structures in the double-sided display device 100 can be achieved without setting a backplane, thereby saving the processing cost and raw material cost generated by the backplane, which is conducive to reducing the overall cost of the double-sided display device 100.

[0077] In some possible implementations, see Figure 5 and Figure 6 As shown, the inner wall of the first frame 111 may be provided with an inner concave portion 110a. The inner concave portion 110a has a first limiting wall 103 and a second limiting wall 104 opposite to each other. The edge of the light guide module 150 and the light emitting unit may be located in the inner concave portion 110a formed by the first limiting wall 103 and the second limiting wall 104.

[0078] In some possible implementations, see Figures 4 to 6 As shown, along the first direction X, the first frame 111 is provided with a first limiting wall 103 and a first step portion 101 in sequence, the first limiting wall 103 is connected to the first side of the light guide module 150 to constrain the light guide module 150 to move along the first direction X, and the first step portion 101 is connected to the first panel 120 to fix the first panel 120.

[0079] In the embodiment of the present application, by providing the first step portion 101 , it can be configured to support and fix the first panel 120 .

[0080] In some embodiments, the first step portion 101 may include a first bottom wall 1011 and a first side wall 1012. The first bottom wall 1011 and the first side wall 1012 may surround a first recessed portion that can accommodate the first panel 120. The edge of the first panel 120 may overlap the first bottom wall 1011.

[0081] Exemplarily, the first panel 120 may be adhered to the first bottom wall 1011 of the first step portion 101 .

[0082] In some examples, the first panel 120 may include a first display panel 121. The first display panel 121 may be used to display a first picture, so as to be configured to implement human-computer interaction. A user may touch the first panel 120 to obtain required information.

[0083] In some examples, the first panel 120 may include a first touch panel 122. The first touch panel 122 may be located outside the first display panel 121 to protect the first display panel 121 and reduce the possibility of scratching the first display panel 121 due to direct user touch.

[0084] The first panel 120 may be fixed to the first step portion 101 via the first touch panel 122. In other words, since the first display panel 121 is relatively thin, the first display panel 121 and the first step portion 101 may not contact each other, so as to reduce the possibility of the first step portion 101 scratching or crushing the first display panel 121 during the installation process.

[0085] In some examples, the first display panel 121 and the first touch panel 122 may be bonded together to form a whole and then fixed to the first step portion 101 of the first frame 111 .

[0086] Along the second direction Y, the first frame body 111 is sequentially provided with a second limiting wall 104 and a second step portion 102, the second limiting wall 104 is connected to the second side of the light guide module 150 to constrain the light guide module 150 to move along the second direction Y, and the second step portion 102 is connected to the second panel 130 to fix the second panel 130.

[0087] By providing the second step portion 102 , it is possible to configure to support and fix the second panel 130 .

[0088] In some embodiments, the second step portion 102 may include a second bottom wall 1021 and a second side wall 1022. The second bottom wall 1021 and the second side wall 1022 may be arranged to form a second recessed portion for accommodating the second panel 130. The edge of the second panel 130 may overlap the second bottom wall 1021.

[0089] Exemplarily, the second panel 130 may be adhered to the second bottom wall 1021 of the second step portion 102 .

[0090] In some examples, the second panel 130 may include a second display panel 131. The second display panel 131 may be used to display a second screen to implement human-computer interaction. The user may touch the second panel 130 to obtain required information.

[0091] In some examples, the second panel 130 may include a second touch panel 132. The second touch panel 132 may be located outside the second display panel 131 to protect the second display panel 131 and reduce the possibility of scratching the second display panel 131 due to direct user touch.

[0092] The second panel 130 may be fixed to the second step portion 102 via the second touch panel 132. Since the second display panel 131 is relatively thin, the second display panel 131 and the second step portion 102 may not contact each other, so as to reduce the possibility of the second step portion 102 scratching or crushing the second display panel 131 during installation.

[0093] In some examples, the first panel 120 and the second panel 130 may be a quadrilateral structure. Correspondingly, the middle frame assembly 110 may also be a quadrilateral frame structure.

[0094] In some achievable embodiments, along the third direction Z, the first frame body 111 is provided with a receiving cavity 1113 a , and the receiving cavity 1113 a can receive electrical components.

[0095] The first frame 111 of the embodiment of the present application is also provided with a receiving cavity 1113a for receiving electrical components. Therefore, the first frame 111 does not need to be provided with an additional structure for fixing or receiving electrical components, which can reduce processing and assembly costs.

[0096] Exemplarily, the accommodating cavity 1113a can be used to accommodate electrical components such as boards.

[0097] In the embodiment of the present application, the inner wall of the first frame 111 is provided with an inner recess 110a to fix the light guide module 150. The inner recess 110a can be used to constrain the light guide module 150 so that the light guide module 150 is not easily displaced along the first direction X and the second direction Y.

[0098] In some examples, the opening of the inner recess 110a may face the center of the light guide module 150. The edge of the light guide module 150 may be located in the inner recess 110a.

[0099] In some examples, the distance between the light guide module 150 and the first panel 120 and the distance between the light guide module 150 and the second panel 130 may be equal.

[0100] In some possible implementations, see Figure 5 As shown, the first frame 111 of the embodiment of the present application may include a fixing portion 1111. The inner recess 110a may be arranged on a side of the fixing portion 1111 facing the light guide module 150. The light emitting unit 140 may be arranged on the bottom wall of the inner recess 110a. The accommodating cavity 1113a is located on a side of the fixing portion 1111 facing away from the inner recess 110a.

[0101] In the embodiment of the present application, the light emitting unit 140 may be disposed on the first frame 111. The inner recess 110a on the first frame 111 may be disposed on the fixing portion 1111. The light emitting unit 140 may be fixed on the fixing portion 1111. The inner recess 110a may be recessed in a direction away from the center of the light guide module 150 along the third direction Z, so as to accommodate the light emitting unit 140 and fix the light guide module 150.

[0102] In some examples, a flexible seal may be provided on one side of the light guide module 150 along the first direction X. A flexible seal may also be provided on one side of the light guide module 150 along the second direction Y. The provision of a flexible seal may be used to avoid direct contact between the first limiting wall 103 and the second limiting wall 104 of the inner recess 110a and the light guide module 150, thereby preventing the light guide module 150 from being scratched.

[0103] In some embodiments, a heat sink 1112 may be provided on a side of the fixing portion 1111 facing away from the inner recess 110a. The heat sink 1112 and the fixing portion 1111 may be an integrally formed structure.

[0104] In the embodiment of the present application, by setting the fixing portion 1111 and the heat sink 1112 as an integrally formed structure, the assembly process between the heat sink 1112 and the fixing portion 1111 can be saved, which is beneficial to improving assembly efficiency and reducing assembly costs.

[0105] In some examples, the heat sink 1112 may include a plurality of heat sinks. The plurality of heat sinks may be provided to increase the heat dissipation surface area of ​​the heat sink 1112. The heat sink may extend along the fourth direction K. The plurality of heat sinks may be provided along the first direction X at intervals.

[0106] In some examples, the fixing portion 1111 may be provided with a plurality of avoidance holes for avoiding COF (Chip On Film).

[0107] In some possible implementations, see Figure 5 As shown, the first frame 111 may include an outer frame 1113. The outer frame 1113 may be disposed on a side of the fixing portion 1111 facing away from the light guide module 150. The outer frame 1113 and the fixing portion 1111 may form a receiving cavity 1113a. The heat sink 1112 is located in the receiving cavity 1113a.

[0108] In the embodiment of the present application, the outer frame 1113 can be provided to fix the COF. In addition, the receiving cavity 1113a formed by the outer frame 1113 can be used to receive electrical components such as boards of the double-sided display device 100 .

[0109] In some examples, the outer frame 1113 , the fixing portion 1111 , and the heat sink 1112 may form a first frame body 111 of an integrated structure.

[0110] In some embodiments, see Figure 3 and Figure 4 As shown, the double-sided display device 100 may include a light emitting unit 140. The light emitting unit 140 may be configured to provide a light source to the first panel 120 and the second panel 130. The light emitting unit 140 may be disposed in the first frame body 111 of the middle frame assembly 110.

[0111] In some embodiments, the double-sided display device 100 may include a light guide module 150. The light guide module 150 may be located between the first panel 120 and the second panel 130, and the light guide module 150 may be disposed in the middle frame assembly 110. The light emitting unit 140 may be located at the outer peripheral side of the light guide module 150. The light guide module 150 may be configured to guide the light source provided by the light emitting unit 140 to the first panel 120 and the second panel 130, respectively.

[0112] Moreover, in the embodiment of the present application, the light emitting unit 140 can emit light from the side of the light guide module 150 . Therefore, the light emitting unit 140 is unlikely to occupy the space in the thickness direction of the light guide module 150 , which is beneficial to reducing the thickness of the double-sided display device 100 .

[0113] In some embodiments, see Figure 4 As shown, there may be a gap between the first panel 120 and the light guide module 150 along the first direction X. When the first panel 120 and the light guide module 150 are attached to each other, since it is difficult to achieve absolute sealing between the first panel 120 and the light guide module 150, if foreign impurities enter between the first panel 120 and the light guide module 150, it is easy to cause the impurities to wear the first panel 120 and the light guide module 150. Therefore, in the embodiment of the present application, the above technical problem can be effectively solved by setting a gap.

[0114] Similarly, a gap may be provided between the second panel 130 and the light guide module 150 to reduce the possibility of impurities abrading the first panel 120 and the light guide module 150 .

[0115] In some embodiments, the light guide module 150 may include a light guide plate 151. The light guide plate 151 may be configured to uniformly process the light provided by the light emitting unit 140 so that the light can be uniformly emitted to the first panel 120 and the second panel 130 to improve the display effect of the first picture and the second picture.

[0116] In some embodiments, the light guide module 150 may include a diaphragm 152. The diaphragm 152 may be configured to improve the uniformity of the light source, remove shadows in the light source, and have light filtering properties.

[0117] In some embodiments, the film 152 may be provided on both side surfaces of the light guide plate 151 along the first direction X. In other words, the film 152 may be provided on the side of the light guide plate 151 facing the first panel 120 , and the film 152 may be provided on the side of the light guide plate 151 facing the second panel 130 .

[0118] In some possible implementations, see Figures 4 to 6 As shown, the middle frame assembly 110 of the embodiment of the present application may include a second frame body 112 opposite to the first frame body 111. Along the third direction Z, the first frame body 111 and the second frame body 112 may be respectively arranged on both sides of the light guide module 150. An inner recess 110a may be provided on the second frame body 112. Among them, a light emitting unit 140 is provided in at least one inner recess 110a, so that the light emitting unit 140 corresponds to the outer periphery of the light guide module 150.

[0119] In the embodiment of the present application, the first frame 111 and the second frame 112 can be used to fix the light guide module 150, the first panel 120 and the second panel 130. The light emitting unit 140 can be fixed in the inner recess 110a. The light emitting unit 140 corresponds to the outer periphery of the light guide module 150, so as to emit the light source from the side of the light guide module 150 to the light guide module 150, and emit the light source to the first panel 120 and the second panel 130 through the light guide module 150, thereby realizing the display function of the first panel 120 and the second panel 130.

[0120] In some examples, the light source of the light emitting unit 140 may correspond to the outer periphery of the light guide module 150. The light source may be provided by a light emitting member such as a light bar or a light bead.

[0121] Figure 7 FIG. 1 is a schematic diagram of an exploded structure of a middle frame assembly 110 according to an embodiment of the present application. Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure along the NN direction. Fig. 9 for Figure 8 Enlarged schematic diagram of point C in the middle. Fig.10 for Figure 8 Enlarged schematic diagram of point D in the middle.

[0122] In some possible implementations, see Figures 7 to 10 As shown, the middle frame assembly 110 of the embodiment of the present application may include a third frame body 113 and a fourth frame body 114. Along the fourth direction K, the third frame body 113 and the fourth frame body 114 may be respectively arranged on both sides of the light guide module 150. The third frame body 113 and the fourth frame body 114 are connected to the first frame body 111 and the second frame body 112. The third frame body 113 and the fourth frame body 114 may be respectively provided with an inner recess 110a.

[0123] In the embodiment of the present application, the first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 can be used to support the edges of the first panel 120 and the second panel 130 to improve the support stability of the first panel 120 and the second panel 130. In addition, the first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 can be provided with an inner recess 110a to fix the edge of the light guide module 150.

[0124] In some implementable embodiments, a light emitting unit 140 may be provided on at least one of the first frame body 111 , the second frame body 112 , the third frame body 113 , and the fourth frame body 114 in the embodiment of the present application.

[0125] In the embodiment of the present application, the number of the light emitting unit 140 can be at least one, so as to be configured to provide a light source.

[0126] In some embodiments, a heat sink 1112 may be disposed on one of the first frame body 111 , the second frame body 112 , the third frame body 113 , and the fourth frame body 114 on which the light emitting unit 140 is disposed.

[0127] In some examples, the light emitting unit 140 may include a circuit board. The light source may be disposed on the circuit board. The heat sink 1112 may have a large heat dissipation surface area. The light emitting unit 140 is prone to generate heat during operation. Therefore, by providing the heat sink 1112, the heat on the light emitting unit 140 may be removed through the large heat dissipation surface area of ​​the heat sink 1112 itself, which is beneficial to improving the heat dissipation efficiency of the light emitting unit 140 and reducing the possibility of affecting the working performance of the light emitting unit 140 due to untimely heat dissipation.

[0128] In this embodiment, the heat sink 1112 may be located in the accommodation cavity 1113 a , so the heat sink 1112 may not easily occupy the external space of the middle frame assembly 110 .

[0129] In some embodiments, the second frame body 112 may extend along the fourth direction K, and the cross-section of the second frame body 112 at any position along the fourth direction K is the same. The second frame body 112 may be formed by an extrusion molding process.

[0130] Similarly, the third frame 113 can extend along the third direction Z, and the cross section of the third frame 113 at any position along the third direction Z is the same. The fourth frame 114 can extend along the third direction Z, and the cross section of the fourth frame 114 at any position along the third direction Z is the same. Therefore, the third frame 113 and the fourth frame 114 can also be formed by extrusion molding.

[0131] In some feasible embodiments, when the light emitting unit 140 is disposed on the first frame 111 and the second frame 112, the third frame 113 and the fourth frame 114 are not provided with the light emitting unit 140, the cross-sections of the second frame 112, the third frame 113 and the fourth frame 114 may be the same.

[0132] In the embodiment of the present application, by setting the second frame 112, the third frame 113, and the fourth frame 114 to have the same structure, the second frame 112, the third frame 113, and the fourth frame 114 can share a set of extrusion molding dies. Therefore, the middle frame assembly 110 of the double-sided display device 100 in the embodiment of the present application can save the mold opening cost of the extrusion molding dies, which is conducive to saving the processing cost of the double-sided display device 100.

[0133] In some embodiments, when the first panel 120 and the second panel 130 are quadrilaterals, Figure 3 and Figure 7 In the directions shown, the double-sided display device 100 may include a sky side, a ground side, a left side, and a right side. Among them, the sky side and the ground side are opposite to each other along the third direction Z, and the left side and the right side are opposite to each other along the fourth direction K. Therefore, in the embodiment of the present application, the first frame 111 may be located on the ground side, and the light emitting unit 140 may be located on the first frame 111 on the ground side. The second frame 112 may be located on the sky side, the third frame 113 may be located on the left side, and the fourth frame 114 may be located on the right side.

[0134] In some examples, a hollow portion 110 b may be provided on the first frame body 111 , the second frame body 112 , the third frame body 113 , and the fourth frame body 114 .

[0135] Taking the first frame 111 as an example, a hollow portion 110b may be provided on the fixing portion 1111. The hollow portion 110b penetrates the fixing portion 1111 along the fourth direction K. Along the third direction Z, the hollow portion 110b and the inner recess 110a are located on the same side of the fixing portion 1111. In other words, the hollow portion 110b and the accommodating cavity 1113a may be located on both sides of the fixing portion 1111 along the third direction Z, respectively.

[0136] The hollow portion 110 b may be configured to reduce the weight of the middle frame assembly 110 , thereby facilitating reducing the weight of the double-sided display device 100 .

[0137] In some examples, the first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 may be made of aluminum. The first frame 111, the second frame 112, the third frame 113 and the fourth frame 114 may be fastened by screws.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0139] For ease of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A double-sided display device, characterized in that: The double-sided display device comprises: Light guide module; A first panel, the first panel is located at one side of the light guide module along a first direction; A second panel, the second panel is located at one side of the light guide module along the second direction; A light emitting unit, the light emitting unit being disposed on a peripheral side of the light guide module, the light emitting unit being configured to provide a light source for the light guide module; A middle frame assembly, the middle frame assembly at least comprising a first frame body, the inner wall of the first frame body is provided with an inner concave portion capable of accommodating the light-emitting unit, the inner concave portion having a first limiting wall and a second limiting wall, along the first direction, the first frame body is sequentially provided with the first limiting wall and a first step portion, the first limiting wall is connected to a first side of the light guide module to constrain the light guide module to move along the first direction, and the first step portion is connected to the first panel to fix the first panel; Along the second direction, the first frame is provided with the second limiting wall and the second step portion in sequence, the second limiting wall is connected to the second side of the light guide module to constrain the light guide module to move along the second direction, and the second step portion is connected to the second panel to fix the second panel; Along the third direction, the first frame body is provided with a receiving cavity, and the receiving cavity can receive electrical components.

2. The double-sided display device according to claim 1, characterized in that: The first frame body includes a fixing portion, the inner recess is arranged on a side of the fixing portion facing the light guide module, and the accommodating cavity is located on a side of the fixing portion facing away from the inner recess.

3. The double-sided display device according to claim 2, characterized in that: The first frame includes an outer frame, the outer frame is arranged on the fixing portion, and the outer frame and the fixing portion are surrounded to form the accommodating cavity for accommodating the electrical component.

4. The double-sided display device according to claim 2, characterized in that: The first frame includes a heat sink, which is integrally formed on the first frame. The heat sink is arranged corresponding to the light emitting unit to dissipate heat for the light emitting unit.

5. The double-sided display device according to claim 2, characterized in that: The fixing portion is provided with a hollow portion, the hollow portion penetrates the fixing portion along the fourth direction, and along the third direction, the hollow portion and the inner recessed portion are located on the same side of the fixing portion; The hollow portion is provided on one side of the inner concave portion along the first direction, and / or the hollow portion is provided on one side of the inner concave portion along the second direction.

6. The double-sided display device according to any one of claims 1 to 5, characterized in that: The middle frame assembly includes a second frame body opposite to the first frame body along a third direction, the first frame body and the second frame body are respectively located on both sides of the light guide module, and the inner wall of the second frame body is provided with the recessed portion to fix the two ends of the light guide module along the third direction through the recessed portion of the first frame body and the recessed portion of the second frame body.

7. The double-sided display device according to claim 6, characterized in that: The middle frame assembly includes a third frame body and a fourth frame body opposite to each other along a fourth direction, the third frame body and the fourth frame body are respectively located on both sides of the light guide module, the third frame body and the fourth frame body are connected to the first frame body and the second frame body, and the recessed parts are respectively provided on the opposite sides of the third frame body and the fourth frame body, so as to fix the two ends of the light guide module along the fourth direction through the recessed parts of the third frame body and the recessed parts of the fourth frame body.

8. The double-sided display device according to claim 7, characterized in that: The first frame body is an integrally formed structure; and / or the second frame body is an integrally formed structure; and / or the third frame body is an integrally formed structure; and / or the fourth frame body is an integrally formed structure.

9. The double-sided display device according to claim 7, characterized in that: The second frame, the third frame and the fourth frame have the same structure.

10. A double-sided display device, characterized in that: The device comprises a light guide module, a first panel, a second panel, a light emitting unit and a middle frame assembly, wherein the first panel is located on one side of the light guide module along a first direction, the second panel is located on one side of the light guide module along a second direction, the middle frame assembly comprises at least a first frame body, an inner wall of the first frame body is provided with an inner concave portion capable of accommodating the light emitting unit, so that the light emitting unit is located on the peripheral side of the light guide module and provides a light source for the light guide module, and the inner concave portion has a first limiting wall and a second limiting wall; Wherein, along the first direction, the first frame is provided with the first limiting wall and the first step portion in sequence, the first limiting wall is connected to the first side of the light guide module to constrain the light guide module to move along the first direction, and the first step portion is connected to the first panel to fix the first panel; Along the second direction, the first frame is provided with the second limiting wall and the second step portion in sequence, the second limiting wall is connected to the second side of the light guide module to constrain the light guide module to move along the second direction, and the second step portion is connected to the second panel to fix the second panel; Along the third direction, the first frame body is provided with a receiving cavity, and the receiving cavity can receive an electrical component.

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