electronic devices

Abstract

The present application provides an electronic device, wherein, after the display screen of the electronic device is fitted to a screen frame, the display screen further extends out of the screen frame at at least two opposing edges, is wound around the screen frame to a second side of the display screen, and is subsequently secured by a fixing structure connected to the screen frame. This allows the fixing structure, which is wound around the second side portion and connected to the display screen, to provide tension on the surface of the first side of the display screen at at least two opposing edges, thereby maintaining the display screen flat through the tension exerted by the fixing structure.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to an electronic device. Background Art

[0002] At present, with the continuous development of electronic technology, the display screens of electronic devices such as televisions and computers not only have traditional display functions, but also have self-sounding functions. Therefore, there is no need to set up installation positions for speakers inside the electronic devices, and the electronic devices can be designed to be lighter and thinner. In order to achieve the self-sounding of the display screen, the electronic device will set an electromagnetic exciter on the non-display side of the display screen, so that the display screen emits bending waves through modal resonance under the drive of the electromagnetic exciter to make sounds. However, it is not difficult to understand that the higher the strength of the display screen, the easier it is to keep flat and not easy to deform. However, in order to achieve the vibration sound and good acoustic performance of the display screen, the material used to make the display screen is required to be light and thin. The thickness and bending strength of the sound-generating substrate that carries the optical diaphragm in the display screen cannot be too high. Therefore, the vibration sound performance of the display screen and the strength required to maintain flatness are a contradiction.

[0003] In existing technology, electronic devices typically use a frame structure around the edges of the display screen to secure the display screen in place. However, with the increasing market adoption of large-screen electronic devices with ultra-short-throw projection capabilities, such as laser projection TVs, higher flatness requirements are being placed on ultra-short-throw laser projection screens. Existing wraparound fixing structures cannot solely rely on the rigidity of the display screen itself to maintain flatness when the screen size is large. This is especially true for thin display screens composed of multiple layers of composite materials, which are susceptible to unevenness or warping due to ambient temperature and humidity, leading to geometric distortion of the image displayed by the laser projection screen.

[0004] Therefore, how to make the self-sounding display screen of an electronic device maintain its own flatness while achieving good acoustic sound performance, thereby avoiding geometric distortion of the image displayed on the display screen, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The present application provides an electronic device to solve the technical problem in the prior art that the electronic device cannot keep the display screen itself flat, resulting in geometric distortion of the displayed image.

[0006] A first aspect of the present application provides an electronic device, including:

[0007] a host, configured to project light onto a display screen and send electrical signals to at least one electromagnetic actuator;

[0008] A display screen, configured to receive the light projected by the host and display an image on a first side of the display screen according to the light;

[0009] at least one electromagnetic exciter, disposed on a second side of the display screen, the at least one electromagnetic exciter being configured to receive an electrical signal sent by the host and drive the display screen to vibrate and generate sound according to the electrical signal;

[0010] a screen frame, arranged to be in contact with the second side edge of the display screen around a perimeter thereof, for supporting the display screen; the display screen extends out of the screen frame at at least two opposite edges and is arranged around the second side of the display screen;

[0011] At least one fixing structure is arranged on the second side of the display screen; a first end of each fixing structure is connected to the screen frame, and a second end is connected to the display screen wrapped around the second side, for keeping the display screen flat.

[0012] In an embodiment of the first aspect of the present application, each of the fixing structures is specifically configured to provide tension to the display screen so as to keep the display screen flat.

[0013] In an embodiment of the first aspect of the present application, the display screen includes: a sound-generating substrate and a display structure, the sound-generating substrate and the display structure are arranged in close contact, and the at least one electromagnetic exciter is arranged on one side of the sound-generating substrate;

[0014] The sound-generating substrate comprises: a first skin, a second skin and an intermediate layer; the first skin and the second skin are respectively attached to both sides of the intermediate layer;

[0015] The first skin and / or the second skin of the sound-generating substrate extend out of the screen frame at at least two opposite edges and are wrapped around the second side of the display screen; the second end of each of the fixed structures is connected to the first skin and / or the second skin of the sound-generating substrate wrapped around the second side.

[0016] In an embodiment of the first aspect of the present application, the first skin and the second skin are made of polymer materials.

[0017] In an embodiment of the first aspect of the present application, the polymer material includes: polyurethane or polystyrene.

[0018] In an embodiment of the first aspect of the present application, at least one opening is provided on the first skin and / or the second skin of the sound-generating substrate wound around the second side, and the at least one opening corresponds one-to-one to the at least one fixing structure;

[0019] A hollow rivet is provided on each opening, and the second end of the at least one fixing structure is connected to the hollow rivet provided on the at least one opening.

[0020] In an embodiment of the first aspect of the present application, the fixing structure includes: a tension spring.

[0021] In an embodiment of the first aspect of the present application, the elastic coefficient of the tension spring connected to the upper edge of the display screen is greater than the elastic coefficient of the tension spring connected to the lower edge of the display screen.

[0022] In an embodiment of the first aspect of the present application, further comprising:

[0023] At least two connecting cloths, connected one by one to at least two opposite edges of the display screen;

[0024] The display screen is specifically formed by the at least two connecting cloths connected one by one at at least two opposite edges, extending out of the screen frame at at least two opposite edges and being wound around to the second side of the display screen.

[0025] In an embodiment of the first aspect of the present application, the further comprising: support rods corresponding to the at least two connecting cloths one by one, wherein the at least two connecting cloths are respectively penetrated by the corresponding support rods when being wound around the second side of the display screen;

[0026] The at least one fixed structure includes: at least one fixed structure corresponding to each of the support rods; the first end of the at least one fixed structure corresponding to each of the support rods is connected to the screen frame, and the second end is connected to the support rod; the at least one fixed structure corresponding to each of the support rods is used to provide tension to the display screen through the support rods, so that the laser projection screen remains flat.

[0027] An embodiment of the present application provides an electronic device, comprising: a display screen, wherein a first side of the display screen is used to display an image; at least one electromagnetic exciter is arranged on a second side of the display screen, and the at least one electromagnetic exciter is used to drive the display screen to vibrate and make sounds; a screen frame is arranged to fit around the second side edge of the display screen, and is used to support the display screen; the display screen extends out of the screen frame at at least two opposite edges and is wrapped around the second side of the display screen; at least one fixed structure is arranged on the second side of the display screen; a first end of each of the fixed structures is connected to the screen frame, and a second end is connected to the display screen wrapped around the second side, and is used to keep the display screen flat.

[0028] An embodiment of the present application also provides another electronic device, including: a display screen, wherein the first side of the display screen displays an image; at least one electromagnetic exciter, arranged on the second side of the display screen, and the at least one electromagnetic exciter is used to drive the display screen to vibrate and make sound; a screen frame, used to support the display screen; at least two connecting cloths, connected one-to-one to at least two opposite edges of the display screen; wherein the display screen specifically extends out of the screen frame at at least two opposite edges through the at least two connecting cloths connected one-to-one at at least two opposite edges, and is wrapped around to the second side of the display screen.

[0029] In summary, the present application provides an electronic device, wherein, after the display screen of the electronic device is fitted with the screen frame, the display screen further extends out of the screen frame at at least two opposite edges, and is wound around the second side of the display screen with the screen frame as an axis, and then the display screen is fixed by a fixed structure connected to the screen frame. The display screen is provided with a pulling force in a relative direction at at least two opposite edges by the fixed structure connected to the second side portion, thereby providing tension to the surface of the first side of the display screen, and further enabling the display screen to maintain the flatness of the display screen through the pulling force of the fixed structure on the display screen. In particular, for ultra-short-focus projection self-sounding screens, tension can be provided to the entire display screen, so that the display screen will not be unevenly deformed by being concave or convex as a whole after the ambient temperature changes due to the different thermal expansion coefficients of its multi-layer materials, thereby ensuring that the image displayed on the display screen under ultra-short-focus projection will not be geometrically distorted. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of an electronic device;

[0031] Figure 2 A schematic diagram of a cross-sectional structure of an electronic device;

[0032] Figure 3 A schematic diagram of the structure of another electronic device;

[0033] Figure 4 is a schematic diagram of a cross-sectional structure of another electronic device;

[0034] Figure 5 This is a schematic diagram of the structure of the electronic device embodiment 1 provided in this application;

[0035] Figure 6 This is a schematic diagram of the structure of the laser projection screen;

[0036] Figure 7 This is a schematic diagram of the structure of the sound-generating substrate in the laser projection screen;

[0037] Figure 8 A schematic structural diagram of the display screen cover provided in this application;

[0038] Figure 9 A schematic diagram of the connection method of the fixed structure provided in this application;

[0039] Figure 10 A schematic diagram of the packaging structure of the display screen provided in this application;

[0040] Figure 11 This is a schematic diagram of the structure of the second embodiment of the electronic device provided by this application;

[0041] Figure 12 This is a schematic structural diagram of the display screen cover of the system of this application;

[0042] Figure 13 A schematic diagram of the connection method of the fixed structure provided in this application;

[0043] Figure 14 Schematic diagram of the packaging structure of the display screen provided in this application. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the numbers used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0046] Before formally introducing this application, we will first introduce the application scenarios and problems existing in the prior art in conjunction with the accompanying drawings.

[0047] Figure 1Schematic diagram of the structure of an electronic device, wherein, taking the electronic device as a television as an example, the electronic device includes: a screen frame 11, a display screen 12, and at least two speakers (eg Figure 1 131 and the right speaker 132). More specifically, Figure 2 A schematic diagram of the cross-sectional structure of an electronic device, combined with Figure 1 and Figure 2 As shown, the screen frame 11 of the TV wraps and fixes the display screen 12 around it. At the same time, the display side of the display screen 12 is used to display the picture content, and a left speaker 131 and a right speaker 132 are set inside the electronic device on the non-display side of the display screen 12. The left speaker 131 and the right speaker 132 are usually set on the left and right sides of the direction in which the user views the display screen 12, respectively, to provide left and right channel sounds.

[0048] As the market demand for electronic devices gradually develops towards thinner and lighter, and as electronic technology continues to advance, more and more key components such as display screens and basic frames in electronic devices can be realized with thinner thickness, thereby reducing the overall thickness of electronic devices. Therefore, in addition to setting up some devices for display, the space reserved for speakers in electronic devices is getting smaller and smaller. Therefore, some electronic devices in some technologies have "self-sounding screens", for example, you can refer to Figure 3-Figure 4 , Figure 3 is a structural diagram of another electronic device, Figure 4 The figure is a cross-sectional structural diagram of another electronic device. In this example, the electronic device is a laser projection TV. The host 10 is used to project laser light onto the display screen 12, so that the display screen 12 displays the image content. At the same time, the host 10 can also send an electrical signal to the electromagnetic exciter, so that the electromagnetic exciter drives the display screen to vibrate and make sounds. Figure 3 and Figure 4 As shown, in addition to using screen frame 11 to wrap and secure display screen 12, the electronic device further includes at least one electromagnetic exciter (e.g., electromagnetic exciters 141 and 142 in the figure) disposed on the non-display side of display screen 12. This allows display screen 12 to not only display content but also generate sound through bending waves generated by modal resonance under the action of electromagnetic exciters 141 and 142. This self-generated sound from the display eliminates the need for a dedicated speaker installation within the electronic device, thereby achieving a thinner and lighter design.

[0049] However, if Figure 3 and Figure 4The electronic device shown uses a screen frame 11 to simply wrap around the display screen 12 to fix it. Although this can achieve the fixation of the relative position between the display screen 12 and the screen frame 11, for a large-sized display screen, its sound-generating substrate needs to have a higher rigidity (the sound-generating substrate is harder and thicker) to maintain flatness, but a sound-generating substrate with higher rigidity is not conducive to vibration and sound generation. On the other hand, if the display screen has a sound-generating substrate with lower rigidity (softer and thinner), it is easier to generate bending wave vibrations. However, due to the different thermal expansion coefficients of the multi-layer materials composed of the lower rigidity sound-generating substrate, when the ambient temperature conditions of the display screen change, the entire display screen will become concave or convex, resulting in uneven deformation. At this time, relying solely on the screen frame 11 to wrap and fix the display screen 12 cannot completely prevent the large-sized display screen 12 from having a flat surface without concave and convex deformation, which will lead to geometric distortion of the image displayed on the display screen.

[0050] Therefore, the present application provides an electronic device that provides tension for the display screen by setting a folding setting of the display screen and combining it with the connection of a fixed structure to solve the technical problem in the prior art that the display screen, especially the ultra-short-focus projection self-sounding display screen, cannot remain sufficiently flat, resulting in image distortion.

[0051] The following detailed description of the technical solution of the present application is provided with reference to the accompanying drawings. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0052] Figure 5 This is a structural diagram of the electronic device embodiment 1 provided in this application, such as Figure 5 The electronic device shown may be an electronic device with a display screen, such as a television, a computer, etc. In a possible implementation, the television may be a laser projection television, and its display screen may be a laser projection screen.

[0053] like Figure 5 A schematic diagram of a cross section perpendicular to the x-direction in the figure is shown after the electronic device provided by the present application establishes the x, y, and z coordinate axes. The electronic device includes: a host 20, a display screen 21, a screen frame 22, at least one electromagnetic exciter 23, and at least one fixed structure 24.

[0054] The host 20 is a device in an electronic device that provides audio and video signals. The host 20 can be located on the non-display side of the display screen 21, referred to as the first side; alternatively, the host 20 can be located on the display side of the display screen 21, i.e., the second side of the display screen 21 opposite the first side in the figure. This application does not limit the specific location or configuration of the host 20.

[0055] The host 20 can specifically project light onto the display screen 21, so that after the display screen 21 receives the light projected by the host 20, the content of the image screen is displayed on the first side according to the light. In a laser projection TV, the host 20 can be a laser projection host, and the light projected by the host 20 onto the display screen 21 is laser.

[0056] The host 20 can also specifically send an electrical signal to at least one electromagnetic exciter 23 disposed on the second side of the display screen 21, such as Figure 5 The at least one electromagnetic exciter 23 provided on the second side of the display screen can be used to generate electromagnetic force based on the electrical signal sent by the host, either individually or collectively, to drive the display screen 21 to vibrate and generate sound.

[0057] For illustration, in the following embodiments of this application, the remaining structures excluding the host 20 are collectively referred to as a display module. In other words, the electronic device includes a display module and a host. For an introduction to the relevant embodiments of the display module, please refer to the relevant embodiments of the electronic device, and will not be repeated below.

[0058] In order to fix the display screen 21, a screen frame 22 is fitted around the second side edge of the display screen 21. The shape of the screen frame 22 adapts to the shape of the display screen 21 and is used to support and protect the display screen 21. Moreover, the screen frame 22 is only provided on the second side of the display screen 21, and no screen frame 22 is provided on the first side of the display screen 21. For example, Figure 5 The rectangular display screen 21 is arranged at the edges of the four sides of the second side, and is fitted with a screen frame 22 which is also rectangular.

[0059] In particular, in the electronic device provided by the present application, after the display screen 21 is fitted with the screen frame 22, it continues to extend beyond the range of the screen frame 22 and is wound around to the second side of the display screen 21. Figure 5 In the embodiment, the edge of the display screen 21 is in contact with the screen frame 22 and is flipped from the first side to the second side with the top of the screen frame 22 as the axis.

[0060] Optionally, at least two opposite sides of the display screen 21 are wound around the second side of the display screen 21, so that the tension provided to the display screen 21 by the pulling force of the two opposite sides makes the display screen 21 remain flat between the two opposite sides. Figure 5In the coordinate system established in , the two sides of the rectangular display screen 21 in the positive direction of the x-axis and the negative direction of the x-axis are opposite to each other, and the display screen 21 can be wound around the second side at these two opposite edges to provide relative tension. At the same time, the two sides of the rectangular display screen 21 in the positive direction of the y-axis and the negative direction of the y-axis are opposite to each other, and the display screen 21 can also be wound around the second side at these two opposite edges to provide relative tension. Or, as Figure 5 The display screen of the electronic device shown is wound around to the second side at the four edges that are opposite to each other.

[0061] Optionally, a portion of the display screen 21 may be flipped to the second side, that is, the manufacturer may set the size of the display screen 21 to be larger than the size of the screen frame 22 during production, so that after the display screen 21 and the screen frame 22 are fitted together, the edges of the four sides of the display screen 21 can still extend out of the screen frame 22 and be wound around the second side of the display screen 21 with the screen frame 22 as the axis.

[0062] Furthermore, after the display screen of the electronic device provided by the present application is arranged around 21 to the second side, at least one fixed structure also arranged on the second side of the display screen 21 provides tension to the display screen. Figure 5 As shown, the fixing structure 24 is described as a tension spring. The first end 242 of each fixing structure 24 is connected to the screen frame, and the second end 241 is connected to the display screen 21 wound around the second side. It can be understood that in the example Figure 5 In the example shown, after the rectangular display screen 21 is wound around to the second side at the four edges, at least one fixing structure 24 is provided on the second side of each edge, thereby providing tension to the display screen 21 in the four side directions of the positive x-axis direction, the negative x-axis direction, the positive y-axis direction, and the negative y-axis direction through the edges that are opposite to each other.

[0063] In summary, in the electronic device provided by the embodiment of the present application, after the display screen and the screen frame are fitted together, the display screen further extends out of the screen frame at at least two opposite edges, and is wound around the second side of the display screen with the screen frame as the axis, and then the display screen is fixed by a fixed structure connected to the screen frame. The display screen is provided with a pulling force in a relative direction at at least two opposite edges by the fixed structure connected to the second side portion, thereby providing tension to the surface of the display screen, and further enabling the display screen to maintain the flatness of the display screen through the pulling force of the fixed structure on the display screen. In particular, for ultra-short-throw self-sounding screens, tension can be provided to the entire display screen, so that the display screen will not be unevenly deformed by being concave or convex as a whole after the ambient temperature changes due to the different thermal expansion coefficients of its multi-layer materials, thereby ensuring that the image displayed on the display screen under ultra-short-throw projection will not be geometrically distorted.

[0064] Optionally, in the electronic device provided by the present application, the display screen wound around the second side and connected to the fixed structure may be the display screen itself, or may be a part of the display screen. Figure 6 This is a schematic diagram of the structure of the laser projection screen. When the display screen is a self-sounding laser projection screen, Figure 6 As shown, the self-sounding laser projection display screen includes: a sound-generating substrate 212 and a display structure 211, wherein one side of the sound-generating substrate 212 is arranged in contact with the display structure 211, and at least one electromagnetic exciter is arranged on the other side of the sound-generating substrate 212. More specifically, Figure 7 This is a schematic diagram of the structure of the sound-generating substrate in the laser projection screen, combined with Figure 6 and Figure 7 The sound-emitting substrate specifically includes: a first skin 2121, an intermediate layer 2122, and a second skin 2123. The first skin 2121 and the second skin 2122 are respectively attached to both sides of the intermediate layer 2123. The first skin 2121, the intermediate layer 2122, and the second skin 2123 have the same surface area. The intermediate layer can be formed by connecting multiple honeycomb cores arranged in a hexagonal pattern.

[0065] Then it should be like Figure 6 and Figure 7 When the display screen shown is flipped, only one or two skins on the sound-generating substrate of the display screen can be flipped back and connected to the fixed structure, and the tension of the entire display screen is achieved by the tension of the fixed structure on the skin. Figure 5 In the example shown, if the display screen 21 is as follows Figure 6 and Figure 7 In the laser projection screen shown, a second cover 2123 around the second side edge of the display screen 21 is attached to the screen frame 22. Subsequently, the second cover 2123 of the display screen 21 further extends beyond the screen frame 22, flips around the screen frame 22, and wraps around the second side of the display screen 21. After that, the second cover 2123 is connected to the first end 241 of the fixed structure 24. At this point, because the second cover 2123, the intermediate layer 2122, the first cover 2121, and the display structure 211 are sequentially attached, the fixed structure exerts tension on the entire display screen by pulling on the second cover 2123. Ultimately, the tension on the two opposing edges exerts tension on the entire display screen. Furthermore, in addition to the aforementioned example where the second cover is wrapped around the second side of the display screen, the first cover can also be wrapped around the second side of the display screen, or the first and second covers can be wrapped around the second side of the display screen together. The implementation methods and principles are the same and will not be further described.

[0066] In particular, the first skin 2121 and the second skin 2122 are made of a polymer material, including but not limited to polyurethane or polystyrene. Since the skin of the display screen component in this embodiment is composed of a polymer material, it has high toughness and can be directly connected to the fixed structure, allowing the fixed structure to directly provide tension to the display screen through the skin while ensuring that the display screen is not damaged. Compared to display screens made of other materials in the prior art, which cannot be directly affected by the fixed structure and therefore require the addition of a protective device to provide tension to the display screen, this greatly reduces the structural complexity of the display screen and reduces the production cost of the display screen. The reduced protective device of the display screen can also be used to install other devices in the electronic device, further improving the space utilization within the electronic device.

[0067] Figure 8 A schematic diagram of the structure of the display screen provided in this application, such as Figure 8 As shown, the size of the second skin 2123 is slightly larger than that of the display structure 211, and at least one opening 213 is provided at the extension of each of the four edges, and a hollow rivet 214 is provided above each opening. The hollow rivet 214 is used to enable the fixing structure to provide a relatively uniform pulling force to the second skin through the hollow rivet, further protecting the structure of the display screen. Figure 8 After the extension of the second skin 2123 is wound around the second side, the hollow rivet 214 provided on the second skin 2123 is connected to the fixing structure 24 in the following manner: Figure 9 As shown, Figure 9 This is a schematic diagram of the connection method of the fixing structure provided in this application. In particular, a fixing structure 24 is provided at each corresponding position of the hollow rivets 214 provided on the second skin 2123 wrapped around the second side. The first end of each fixing structure 24 is connected to the corresponding hollow rivet 214, and the second end is connected to the screen frame 22. All the fixing structures at one edge work together to provide tension for the skin at that edge that is turned over to the second side.

[0068] Optionally, Figure 10 The schematic diagram of the packaging structure of the display screen provided in this application, wherein, when the electronic device completes the skin Figure 9 After the fixing method shown in the figure is used, the edges of the display screen of the electronic device can be set with the following Figure 10The outer frame 25 shown is used to protect the display screen and the fixing structure. Optionally, at the four edges of the rectangular display screen, because the tension spring connected to the upper edge of the display screen not only provides tension for the display screen but also needs to bear the weight of the display screen itself, the elastic coefficient of the tension spring connected to the upper edge of the display screen is greater than the elastic coefficient of the tension spring connected to the lower edge of the display screen to offset the weight of the display screen borne by the upper tension spring.

[0069] In summary, in this application Figure 5-10 In the illustrated embodiment, a display screen fixing structure is shown in which the display screen is flipped to the second side of the screen frame and directly connected to the fixing structure. In other possible implementations, since simply enlarging the display screen only for fixing it around the second side has a technical effect of simple structure and easy implementation, in a specific implementation, due to production cost considerations, the size of the display screen can be limited to the same as the screen frame, and each side of the display screen can be expanded by a connecting cloth, and the display screen is "extended" by the connecting cloth to which the display screen is connected, so that the connecting cloth connected to the display screen is wrapped around the second side of the display screen and connected to the fixing structure, so that the fixing structure provides tension to the display screen through the connecting cloth.

[0070] Specifically, Figure 11 This is a structural diagram of the second embodiment of the electronic device provided in this application, such as Figure 11 The electronic device shown includes: a host 20, a display screen 21, a screen frame 22, at least two connecting cloths 26, support rods 27 corresponding one to the connecting cloths 26, at least one electromagnetic exciter 23, and at least one fixing structure 24 corresponding to each support rod 27.

[0071] The description of the host 20, the display screen 21, the screen frame 22 and the at least one electromagnetic actuator 23 can refer to the following: Figure 5 The embodiment shown is omitted for brevity.

[0072] In this embodiment, at least two opposite edges of the display screen are connected to the at least two connecting cloths 26 and pass through a support rod 27, thereby extending the display screen itself. At this time, the display screen can be equivalent to including both the display screen itself and all the connecting cloths 26.

[0073] For example, in Figure 11In the established coordinate system, the two sides of the rectangular display screen 21 in the positive and negative directions of the x-axis are opposite to each other. The display screen 21 is connected to a connecting cloth 26 at each of these two opposite edges. The two connecting cloths 26 connected at the opposite edges are also passed through a connecting rod 27 and then wound to the second side of the display screen 21. At the same time, the two sides of the rectangular display screen 21 in the positive and negative directions of the y-axis are opposite to each other. The display screen 21 is connected to a connecting cloth 26 at each of these two opposite edges. The two connecting cloths 26 connected at the opposite edges are also passed through a connecting rod 27 and then wound to the second side of the display screen 21. Or, as Figure 11 The display screen of the electronic device shown is connected to the connecting cloth 26 at the four edges facing each other, passes through the connecting rod 27 and is then wound around to the second side.

[0074] More specifically, Figure 12 This is a schematic diagram of the structure of the display screen of the system of this application, such as Figure 12 As shown, the second skin 2123 of the display screen 21 is connected to a connecting cloth 26 at each of the four edges, and each connecting cloth is wrapped around a support rod 27. Figure 12 After the connecting cloth 26 is passed through the support rod 27 and wound around the second side, the support rod 27 is connected to at least one fixed structure 24 also provided on the second side of the display screen 21. The at least one fixed structure 24 provides tension to the display screen 21 through the support rod 27 and the connecting cloth 26. The connection between the at least one fixed structure 24 and the support rod 27 is as follows: Figure 13 As shown, Figure 13 The diagram of the connection method of the fixed structure provided in this application is as follows, wherein openings 215 are provided at positions corresponding to the fixed structures of the connection cloth 26 wound around the second side for accommodating the second end of the fixed structure 24. Figure 13 In the example, the fixed structure 24 is used as a tension spring for illustration. The first end 242 of each fixed structure 24 is connected to the screen frame, and the second ends 241 of all fixed structures 24 are connected to the support rod 27 through the corresponding opening. Then at least one fixed structure 24 connected to each support rod 27 provides tension to the connecting cloth 26 passing through the support rod 27. The support rod 27 can make the tension provided by at least one fixed structure 24 evenly distributed on the entire connecting cloth, preventing the connecting cloth from being directly pulled by the fixed structure 24 and damaged. At this time, since the connecting cloth 26 is connected to the second skin 2123, and the second skin 2123, the middle layer 2122, the first skin 2121 and the display structure 211 are arranged in sequence, the tension of the fixed structure on the connecting cloth 26 through the support rod 27 can achieve tension on the entire display screen, and finally the tension on the entire display screen is achieved by the tension of the two opposite edges. It can be understood that in the case of Figure 11In the example shown, when the rectangular display screen 21 is connected to the connecting cloth passing through the support rod at all four edges, and the connecting cloth is wrapped around the second side, at least one fixing structure 24 is provided on the second side of each of the four edges. At least one fixing structure 24 provided on each edge provides tension to the connecting cloth through the support rod, and then provides tension to the display screen 21 in the four directions of the positive x-axis direction, the negative x-axis direction, the positive y-axis direction, and the negative y-axis direction through the connecting cloth at the two opposite edges. Optionally, Figure 14 The schematic diagram of the packaging structure of the display screen provided in this application, wherein, when the electronic device completes the skin Figure 13 After the fixing method shown in the figure is used, the edges of the display screen of the electronic device can be provided with Figure 14 The outer frame 25 shown is used to protect the display screen and the fixing structure. Optionally, at the four edges of the rectangular display screen, because the tension spring connected to the upper edge of the display screen not only provides tension for the display screen but also needs to bear the weight of the display screen itself, the elastic coefficient of the tension spring connected to the upper edge of the display screen is greater than the elastic coefficient of the tension spring connected to the lower edge of the display screen to offset the weight of the display screen borne by the upper tension spring.

[0075] In summary, in the electronic device provided in the embodiment of the present application, after the display screen and the screen frame are fitted together, the display screen is further connected to a connecting cloth penetrated by a support rod at at least two opposite edges, and when the connecting cloth is wound around the second side of the display screen with the screen frame as the axis, the support rod is fixed by a fixed structure connected to the screen frame. This allows the display screen to provide relative pulling force at at least two opposite edges by the connecting cloth connected to the second side portion, thereby providing tension to the surface of the first side of the display screen, and thus allowing the display screen to maintain its flatness through the pulling force of the fixed structure on the display screen. In particular, for ultra-short-focus projection self-sounding screens, tension can be provided to the entire display screen, so that the display screen will not be unevenly deformed by being concave or convex as a whole after changes in ambient temperature due to the different thermal expansion coefficients of its multi-layer materials, thereby ensuring that the image displayed on the display screen will not be geometrically distorted.

[0076] 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 them. 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, characterized in that: include: a host, configured to project light onto a display screen and send electrical signals to at least one electromagnetic actuator; A display screen, configured to receive the light projected by the host and display an image on a first side of the display screen according to the light; at least one electromagnetic exciter, disposed on a second side of the display screen, the at least one electromagnetic exciter being configured to receive an electrical signal sent by the host and drive the display screen to vibrate and generate sound according to the electrical signal; a screen frame, arranged in contact with a second side edge of the display screen, for supporting the display screen; the display screen includes a sound-generating substrate and a display structure, the sound-generating substrate extending out of the screen frame at at least two opposite edges and being arranged around the second side of the display screen; At least one fixed structure is arranged on the second side of the display screen; the first end of each fixed structure is connected to the screen frame, and the second end is connected to the sound-generating substrate of the display screen wrapped around the second side, so as to keep the display screen flat.

2. The electronic device according to claim 1, wherein Each of the fixing structures is specifically configured to provide tension to the display screen so as to keep the display screen flat.

3. The electronic device according to claim 2, wherein: The sound-generating substrate and the display structure are arranged in close contact, and the at least one electromagnetic exciter is arranged on one side of the sound-generating substrate; The sound-generating substrate comprises: a first skin, a second skin and an intermediate layer; the first skin and the second skin are respectively attached to both sides of the intermediate layer; the intermediate layer is formed by connecting a plurality of honeycomb cores arranged in a hexagonal shape; The first skin and / or the second skin of the sound-generating substrate extend out of the screen frame at at least two opposite edges and are wrapped around the second side of the display screen; the second end of each of the fixed structures is connected to the first skin and / or the second skin of the sound-generating substrate wrapped around the second side.

4. The electronic device according to claim 3, wherein: The first skin and the second skin are made of polymer materials.

5. The electronic device according to claim 4, characterized in that The polymer material includes: polyurethane or polystyrene.

6. The electronic device according to claim 5, characterized in that At least one opening is provided on the first skin and / or the second skin of the sound-generating substrate wound around the second side, and the at least one opening corresponds one-to-one to the at least one fixing structure; A hollow rivet is provided on each opening, and the second end of the at least one fixing structure is connected to the hollow rivet provided on the at least one opening.

7. The electronic device according to any one of claims 1 to 6, characterized in that: The fixing structure includes: a tension spring.

8. The electronic device according to claim 7, wherein: The elastic coefficient of the tension spring connected to the upper edge of the display screen is greater than the elastic coefficient of the tension spring connected to the lower edge of the display screen.

9. The electronic device according to claim 1, wherein: Also includes: At least two connecting cloths, connected one by one to at least two opposite edges of the display screen; The display screen is specifically formed by the at least two connecting cloths connected one by one at at least two opposite edges, extending out of the screen frame at at least two opposite edges and being wound around to the second side of the display screen.

10. The electronic device according to claim 9, characterized in that Also includes: Support rods corresponding to the at least two connecting cloths one by one, wherein the at least two connecting cloths are respectively penetrated by the corresponding support rods when they are wound around the second side of the display screen; The at least one fixed structure includes: at least one fixed structure corresponding to each of the support rods; the first end of the at least one fixed structure corresponding to each of the support rods is connected to the screen frame, and the second end is connected to the support rod; the at least one fixed structure corresponding to each of the support rods is used to provide tension to the laser projection screen through the support rods, so that the display screen remains flat.

11. An electronic device, characterized in that: include: A display screen, wherein a first side of the display screen is used to display an image; At least one electromagnetic exciter is disposed on the second side of the display screen, and the at least one electromagnetic exciter is used to drive the display screen to vibrate and generate sound; a screen frame, arranged in contact with a second side edge of the display screen, for supporting the display screen; the display screen includes a sound-generating substrate and a display structure, the sound-generating substrate extending out of the screen frame at at least two opposite edges and being arranged around the second side of the display screen; At least one fixed structure is arranged on the second side of the display screen; the first end of each fixed structure is connected to the screen frame, and the second end is connected to the sound-generating substrate of the display screen wrapped around the second side, so as to keep the display screen flat.

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