A dual-screen display device

Abstract

The application relates to a double-screen display device, which comprises a first shell, a first display module and a first face frame, the first display module is arranged in the first shell, and the first face frame fixes the first display module in the first shell; a second shell, a second display module and a second face frame, the second display module is arranged in the second shell, and the second face frame fixes the second display module in the second shell; a first processing plate arranged in the first shell and used for controlling display content of the first display module; a second processing plate arranged in the second shell and used for controlling display content of the second display module; a connecting flat cable connected with the main processing plate and the auxiliary processing plate; and a power supply battery arranged in the first shell and connected with the main processing plate. The double-screen display device optimizes the structure of the double-screen display device shell, improves the bending resistance and deformation resistance of the shell structure itself, and is beneficial to the portability and thinness of the double-screen display device.

Description

Technical Field

[0001] This invention relates to the field of display devices, and particularly to a dual-screen display device. Background Technology

[0002] Dual-screen display devices, leveraging the advantages of collaborative display from two display modules, can effectively expand the visual display area and are widely used in products such as handwritten notebooks, e-readers, and commercial display terminals. They offer a unique user experience of large-screen reading and split-screen operation on a single device. Currently, user demand for large-screen displays and simultaneous browsing of multiple contents continues to increase, leading to a continuous increase in the overall size of dual-screen display modules. On the other hand, the consumer electronics market is gradually increasing its requirements for device portability, resulting in products iterating towards thinner, lighter, and smaller designs, with continuously thinner casings and further compressed internal stacking space.

[0003] However, the existing conventional dual-screen display device housing structure is difficult to adapt to the development needs of large size and thinness. After the overall size of the housing increases and the thickness decreases, its own bending and deformation resistance decreases significantly. When the dual-screen display device is unfolded, pressed by handwriting, or folded for daily storage, the housing is prone to slight warping deformation under stress. The deformation of the housing will directly compress internal components such as display modules, circuit boards, and batteries, which may cause malfunctions such as pressure damage to the diaphragm and breakage of ribbon cables. This results in poor overall structural durability and reduced lifespan of the dual-screen display device. Furthermore, with the significant reduction in usable space inside the housing due to the thinner and lighter design, traditional dual-screen devices do not have standardized partitioned layout designs for components such as batteries, main control boards, secondary processing boards, communication modules, antennas, and speakers. Various functional components are randomly stacked and arranged. High-power power supply components, high-frequency radio frequency modules and sensitive components such as handwriting sensors and wireless antennas are not physically isolated, which can easily generate electromagnetic interference, causing problems such as handwriting line jitter, unstable network signals, and audio noise. Summary of the Invention

[0004] To address the technical problems existing in the prior art, this invention proposes a dual-screen display device, comprising: a first housing, a first display module, and a first frame, wherein the first display module is disposed in the first housing, and the first frame fixes the first display module in the first housing; a second housing, a second display module, and a second frame, wherein the second display module is disposed in the second housing, and the second frame fixes the second display module in the second housing; a first processing board disposed in the first housing and used to control the display content of the first display module; a second processing board disposed in the second housing and used to control the display content of the second display module; a connecting cable connecting the main processing board and the secondary processing board; and a power supply battery disposed in the first housing and connected to the main processing board; wherein the first housing includes a first bottom plate, a first side plate, and a first protrusion, the first side plate being disposed around the first bottom plate and extending towards the first bottom plate. The first side extends outward and forms a first receiving cavity with the first base plate; the first protruding ridge extends from the first base plate into the first receiving cavity, and the first protruding ridge divides the first base plate into a first region, a second region, a third region, a fourth region, and a fifth region arranged sequentially from the first side to the opposite second side; the first processing plate is located in the fourth region, and the power supply battery is located in the second region; the second region includes a first channel for accommodating a portion of the connecting cable; wherein, the second housing includes a second base plate, a second side plate, and a second protruding ridge, the second side plate is disposed around the second base plate and extends outward from the first side of the second base plate, forming a second receiving cavity with the second base plate, and the second protruding ridge divides the second base plate into a sixth region, a seventh region, an eighth region, and a ninth region arranged sequentially from the first side to the opposite second side; the second processing plate is located in the eighth region, and the eighth region includes a second channel that communicates with the first channel and is used to accommodate a portion of the connecting cable.

[0005] As described above, in the dual-screen display device, the first housing further includes multiple first dividing strips, second dividing strips, third dividing strips, and fourth dividing strips. The first dividing strips divide the first region into multiple first sub-regions; the second dividing strips divide the third region into multiple third sub-regions; the third dividing strips divide the fourth region into multiple fourth sub-regions; the fourth dividing strips divide the fifth region into multiple fifth sub-regions; the second housing further includes one or more fifth dividing strips and a sixth dividing strip. The fifth dividing strips divide the seventh region into multiple seventh sub-regions; the sixth dividing strips divide the ninth region into multiple ninth sub-regions. The dual-screen display device described above further includes: a WiFi wireless module, a speaker, a communication control board, or a power port, wherein the WiFi wireless module, the speaker, the communication control board, or the power port is located in a first sub-region.

[0006] In the dual-screen display device described above, the second region includes a third channel that connects the first region and the third region.

[0007] The dual-screen display device described above further includes: circuit traces disposed in the third channel and connected to the power port and the first processing board.

[0008] In the dual-screen display device described above, when the power supply battery is located in the second area, the power supply battery presses against the connection cable and / or the circuit trace.

[0009] The dual-screen display device described above further includes: a communication module located in the third sub-region and connected to the first processing board.

[0010] The dual-screen display device described above further includes: a button control board and one or more control buttons, the control buttons being disposed on the second housing and used to output commands; the button control board being disposed in the sixth region and connected to the second processing board, and used to sense the action of the control buttons.

[0011] The dual-screen display device described above further includes: a first circuit board and a second circuit board, wherein the first circuit board is located in the fifth sub-region and connected between the first processing board and the first display module; and the second circuit board is located in the ninth sub-region and connected between the second processing board and the second display module.

[0012] As described above, in the dual-screen display device, the first housing and the second housing are foldable and rotatably connected; the fourth region and the eighth region are symmetrically arranged with respect to the connecting axis of the first housing and the second housing; the fifth region and the ninth region are symmetrically arranged with respect to the connecting axis of the first housing and the second housing.

[0013] This application's dual-screen display device improves the shell structure's resistance to bending and deformation by optimizing the shell structure itself. Furthermore, the optimized shell structure optimizes the layout of various components in the dual-screen display device, effectively reducing structural interference and facilitating the portability and thinness of the dual-screen display device. Attached Figure Description

[0014] The preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of a dual-screen display device according to an embodiment of this application; Figure 2 An exploded view of a dual-screen display device according to an embodiment of this application; Figure 3 This is an internal structural diagram of a dual-screen display device according to an embodiment of this application; Figure 4 This is a schematic diagram of a housing kit structure according to an embodiment of this application; Figure 5A and Figure 5B A schematic diagram of a first housing according to an embodiment of this application; and Figure 6A and Figure 6B This is a schematic diagram of a second housing according to one embodiment of the present application. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the following detailed description, reference can be made to the accompanying drawings, which form part of this application and illustrate specific embodiments of the present application. In the drawings, similar reference numerals describe substantially similar components in different figures. Specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to implement the technical solutions of the present application. It should be understood that other embodiments may also be utilized, or structural, logical, or electrical changes may be made to the embodiments of the present application.

[0017] This application proposes a dual-screen display device. By optimizing the structure of the dual-screen display device housing, the bending and deformation resistance of the housing structure itself is improved. Furthermore, the layout of various components of the dual-screen display device is optimized through the optimized housing structure, which effectively reduces structural interference and facilitates the portability and thinness of the dual-screen display device.

[0018] The technical solution of this application will be further illustrated below through specific implementation methods. Those skilled in the art should understand that the following description is merely for the convenience of understanding the technical solution of this application and should not be used to limit the scope of protection of this application.

[0019] Figure 1This is a schematic diagram of a dual-screen display device according to an embodiment of this application. Figure 2 This is an exploded view of a dual-screen display device according to an embodiment of this application. Figure 3 This is an internal structural diagram of a dual-screen display device according to an embodiment of this application.

[0020] As shown in the figure, the dual-screen display device (hereinafter referred to as the "display device") 10 includes a first housing 110, a first display module 120, and a first frame 130. The first display module 120 is disposed within the first housing 110, and the first frame 130 secures the first display module within the first housing. In some embodiments, the dual-screen display device 10 may further include a second housing 210, a second display module 220, and a second frame 230. The second display module 220 is disposed within the second housing 210, and the second frame 230 secures the second display module within the second housing. In some embodiments, the first housing 110 and the second housing 210 are foldably and rotatably connected, allowing the display device to be stacked or unfolded. When the display device is unfolded, the first housing and the second housing are on the same plane; when the display device is stacked, the first housing and the second housing completely overlap.

[0021] refer to Figure 3 In some embodiments, the dual-screen display device 10 may further include a first processing board 140 and a second processing board 240. The first processing board 140 may be disposed in the first housing 110 and can be used to control the display content of the first display module; the second processing board 240 may be disposed in the second housing 210 and can be used to control the display content of the second display module. In some embodiments, the first processing board 140 may serve as the main processing board of the display device, responsible for controlling and coordinating the work between other modules, and is the core of data processing in the dual-screen display device, controlling each functional module to complete its workflow. In some embodiments, the first processing board 140 may control the second processing board 240 to complete its workflow. The dual-screen display device 10 may further include a connecting cable 310, which is disposed in the first housing and the second housing, and passes through the first housing and the second housing to connect the first processing board and the second processing board.

[0022] In some embodiments, the dual-screen display device 10 may further include a first circuit board 150 and a second circuit board 250. The first circuit board 150 is disposed in a first housing and connected to a first processing board and a first display module, and can supply power to the first display module and transmit display content; the second circuit board 250 is disposed in a second housing and connected to a second processing board and a second display module, and can supply power to the second display module and transmit display content.

[0023] In some embodiments, the dual-screen display device 10 may further include a power supply battery 320 connected to the first processing board, which can supply power to the display device. In some embodiments, the power supply battery 320 may be disposed in the first housing, which can shorten the power supply trace between the battery and the first processing board, reduce the closed loop area of ​​the power supply current, weaken the loop antenna radiation effect of the power line, reduce the high-frequency electromagnetic radiation of the whole device, reduce the parasitic inductance of the power supply line, effectively suppress the voltage spike conducted noise generated by instantaneous current changes, and at the same time avoid the formation of ground potential difference and ground loop common mode interference by the cross-screen ground wire. The connection cable does not need to be arranged with cross-screen power supply cable, reducing the mutual capacitance and mutual inductance crosstalk between the wire harnesses.

[0024] In some embodiments, the dual-screen display device 10 may further include a power connector 330, which can be connected to the first processing board and to an external power source to power the display device or charge its battery. In some embodiments, the power connector 330 may be disposed on the first housing, which can reduce the circuit traces 331 between the power connector and the first processing board and eliminate the need for cross-screen circuit traces.

[0025] In some embodiments, the dual-screen display device 10 may further include a communication interface that can be connected to the first processing board. In some embodiments, the communication structure may be housed in the first housing, which helps to reduce the connection lines between the communication interface and the first processing board and eliminates the need for cross-screen connection lines. In some embodiments, the communication interface may include one or more wired or wireless communication interfaces. For example, the communication interface may be a network interface card, or a wireless modem or a wired modem. In one embodiment, the communication interface may include a WiFi modem 341. In another embodiment, the communication interface may include an LTE modem 342. In some embodiments, the LTE modem may also be replaced by a 5G modem or a 3G modem. In other embodiments, the communication interface may also be a Bluetooth component, an RF receiver, an antenna, or a combination thereof. The first processing board can use the communication interface to connect to or be communicatively coupled to a communication network. The first processing board can use the communication interface to transmit or receive packets or messages. In some embodiments, the dual-screen display device 10 may further include a communication control board 350, which may be connected between the communication interface and the first processor and may serve as a transceiver medium for the display device, ensuring the communication connection of the display device. In some embodiments, the communication interface may also be integrated onto the communication control board 350.

[0026] In some embodiments, the dual-screen display device 10 may further include a speaker 360, which may be disposed in the first housing and connected to the first processing board, and may be used to output sound. In some embodiments, the dual-screen display device 10 may further include an input component 370, which may be disposed in the second housing and connected to the second processing board, and may input control signals. In some embodiments, the input component 370 may include control buttons 371-374 and a button control board 375. The control buttons 371-374 are disposed on the second housing and serve as physical interaction components of the display device, and may be used to perform operations such as brightness adjustment, volume adjustment, power on / off, and function switching of the display module; the button control board 375 is disposed in the second housing and may be used to sense the pressing action of the control buttons 371-374, and is connected to the second processing board, and may transmit control signals to the second processing board. In some embodiments, the input component 370 may further include sound collection components 376 and 377, which are disposed in the second housing and located on the button control board, and may convert the collected sound into control signals by the button control board and output them. In some embodiments, the input component 370 may also be disposed in the first housing and connected to the first processing board.

[0027] This application further improves the housing structure of the dual-screen display device, as follows: Figure 4 This is a schematic diagram of a housing kit structure according to an embodiment of this application. As shown, the housing kit 400 includes a first housing 410 and a second housing 420. The first housing 410 can cooperate with a first frame to fix a first display module within the first housing, and the second housing 420 can cooperate with a second frame to fix a second display module within the second housing. In some embodiments, the first housing 410 and the second housing 420 are foldable and rotatably connected, thereby allowing the display device to be stacked or unfolded. When the display device is in the unfolded state, the first housing and the second housing are on the same plane; when the display device is in the stacked state, the first housing and the second housing completely overlap.

[0028] Combination Figure 5A and Figure 5B , Figure 5A and Figure 5B This is a schematic diagram of a first housing according to an embodiment of the present application. In some embodiments, the first housing 410 may include a first base plate 411 and a first side plate 412. The first side plate 412 is fixed to the perimeter of the first base plate 411 and extends to one side of the first base plate. The first side plate 412 and the first base plate 411 together form a first receiving cavity with an open end, which can be used to receive a first display module. According to an embodiment of the present application, the length of the first base plate may be 274 mm, and the width may be 178 mm; the height of the extended first side plate may be 3.38 mm.

[0029] In some embodiments, the first base plate 411 includes a first region 4111, a second region 4112, a third region 4113, a fourth region 4114, and a fifth region 4115, distributed sequentially from a lower first side to an opposite upper second side. Each region boundary includes a protruding ridge 413 extending from the first base plate into the first receiving cavity, which can physically isolate the regions and also serve as a reinforcing rib of the first shell, improving its strength and resistance to bending and deformation. In some embodiments, the protruding ridge of adjacent regions can be the same to reduce the wall thickness and weight of the first shell structure and facilitate the internal region distribution of the first shell. According to one embodiment of this application, the height of the protruding ridge extending into the first receiving cavity can be 1.8-2 mm; preferably 1.9 mm.

[0030] In some embodiments, the first region 4111 is located near the first side below the first base plate, and its area can be 5%, 7%, or 10% of the area of ​​the first base plate. In some embodiments, the first region 4111 includes multiple first dividing strips 4141, dividing the first region 4111 into multiple sub-regions 41111-41114, which can be used to place different components of the dual-screen display device. In some embodiments, the first dividing strips 4141 divide the first region 4111 into sub-regions 41111-41114 of different sizes to accommodate components of different sizes of the dual-screen display device. According to one embodiment of this application, sub-region 41111 can be used to accommodate a communication control board 350; sub-region 41112 can be used to accommodate a power outlet 330, and correspondingly, an opening is reserved at the corresponding position of the first side plate to allow an external power supply to pass through the first side plate and connect to the power outlet; sub-region 41113 can be used to accommodate a speaker, and correspondingly, a sound outlet space (not shown in the figure) is reserved at the corresponding position of the first side plate; sub-region 41114 can be used to accommodate a WiFi modem 341.

[0031] In some embodiments, the area of ​​the sub-region may be 0.5%-2% of the area of ​​the first base plate. In some embodiments, when the area of ​​the sub-region is greater than 1% of the area of ​​the first base plate, the protrusions and / or dividing strips of the sub-region portion may include a first protrusion 4151 extending into the sub-region to increase the strength of the sub-region. In some embodiments, a portion of the first dividing strip 4141 may include a first notch 4161 for connecting different sub-regions to accommodate connectors for different sub-region components.

[0032] In some embodiments, the second region 4112 is located in the middle and near the bottom of the first base plate, wherein the second region 4112 occupies the largest area of ​​the first base plate and can be used to accommodate the power supply battery 320. In some embodiments, the area of ​​the second region 4112 can be more than 40%, 45%, or 50% of the area of ​​the first base plate. In some embodiments, since the area of ​​the second region 4112 is large, a second protrusion 4152 may be included on some of the protrusions of the second region 4112. The second protrusion 4152 extends into the second region 4112 and can be used to increase the strength of the second region 4112. It can also avoid reducing the contact area during component installation and is beneficial for controlling assembly gaps.

[0033] In some embodiments, the second region 4112 includes channels 417 and 418, which can be used to accommodate the wiring of the dual-screen display device. Channel 417 is located in the middle of the second region 4112 and connects the first region 4111 and the third region 4113, thus acting as a reinforcing rib in the second region 4112 to increase its strength. Channel 418 is located above the second region 4112 near a corner of the second housing. According to one embodiment of this application, channel 417 is used to accommodate and limit the circuit trace 331 connected to the power socket 330; channel 418 can be used to accommodate and limit a portion of the connecting cable 310. In some embodiments, the power supply battery disposed in the second region 4112 can press and fix the circuit trace 331 and the connecting cable 310, preventing the circuit trace and / or connecting cable from loosening and shifting during the folding of the display device, causing wear and affecting the stability of the connection.

[0034] In some embodiments, the third region 4113 is located in the middle of the first base plate, and its area may be 5%, 7%, or 10% of the area of ​​the first base plate. In some embodiments, the third region 4113 includes multiple second dividing strips 4142 that divide the third region 4113 into multiple sub-regions 41131-41135. In some embodiments, the second dividing strips 4142 divide the third region 4113 into sub-regions 41131-41135 of different sizes to accommodate components and / or connection positions of different sizes in a dual-screen display device. According to one embodiment of this application, sub-region 41131 may be used to accommodate an LTE modem 342.

[0035] In some embodiments, the area of ​​sub-regions 41131-41135 can be 0.5%-2% of the area of ​​the first base plate. In some embodiments, when the area of ​​the sub-region is greater than 1% of the area of ​​the first base plate, the thickness or shape of part of the second dividing strip can be changed to increase the strength of the sub-region. For example, the thickness of the second dividing strip near the point where it connects with the protrusion can be increased, or the second dividing strip near the point where it connects with the protrusion can be bent. In some embodiments, when the area of ​​the sub-region is greater than 1% of the area of ​​the first base plate, a first support strip 4191 can also be added to the sub-region, which can be disposed between opposing protrusions and spaced apart from the first base plate.

[0036] In some embodiments, the fourth region 4114 is located near the top of the center of the first base plate, and its area may be 10%, 15%, or 20% of the area of ​​the first base plate. In some embodiments, the fourth region 4114 includes a third dividing strip 4143, dividing the fourth region 4114 into parallel sub-regions 41141 and 41142. According to one embodiment of this application, sub-region 41141 is used to accommodate the first processing plate 140. In some embodiments, the area of ​​sub-region 41142 may be 1%-2% of the area of ​​the first base plate. In some embodiments, the areas of sub-regions 41141 and 41142 are relatively large, and the third dividing strip and / or the protrusions 413 of the fourth region 4114 may include a plurality of second notches 4162, which can be used to connect different regions to accommodate connectors of different sub-region elements, and can also cooperate with the protrusions and / or the third dividing strip to form reinforcing ribs of different heights, thereby increasing the strength of the fourth region 4114.

[0037] In some embodiments, the fifth region 4115 is located near the top of the first base plate, and its area can be 10%, 15%, or 20% of the area of ​​the first base plate. In some embodiments, the fifth region 4115 includes a fourth dividing strip 4144, which divides the fifth region 4115 into parallel sub-regions 41151-41155, wherein sub-regions 41151-41154 are located on both sides of sub-region 41155, and the area of ​​sub-regions 41151-41154 can be 1%, 1.2%, 1.3%, or 1.5% of the area of ​​the first base plate, and the area of ​​sub-region 41155 is 10%, 11%, 12%, or 15% of the area of ​​the first base plate. By dividing the fifth region 4115 into a larger sub-region and distributing four smaller sub-regions on both sides thereof, the structural strength of the fifth region 4115 can be improved. In some embodiments, sub-region 41155 may include multiple second support bars 4192, which can support components disposed in sub-region 41155, divide sub-region 41155, and act as reinforcing ribs in sub-region 41155 to improve the strength of sub-region 41155. According to one embodiment of this application, sub-region 41155 is used to accommodate a first circuit board 150.

[0038] In some embodiments, the first housing and the second housing are rotatable and foldable about a third side of the first base plate. In some embodiments, one end of the first side plate located on the fourth side of the first base plate may include a plurality of first grooves 4121, which may be used to accommodate an adsorption element (such as a magnet).

[0039] In some embodiments, the side of the first side plate away from the first base plate includes a first step 4122 facing the first receiving portion, which can be used to receive the first face frame. The first face frame is disposed on the first step 4122 and can fix the first display module in the first receiving portion. In some embodiments, the side of the first side plate away from the first base plate may also include a second step 4123 facing the first receiving portion, which can be used to receive the first display module and can limit the position of the first display module. In some embodiments, the second step is closer to the first receiving portion than the first step. In some embodiments, the depth of the second step is greater than the depth of the first step.

[0040] According to one embodiment of this application, a second step may also be included on the protrusion between the first region 4111 and the second region 4112. Thus, the second step is located on the protrusion between the first side plate of the second, third and fourth sides of the first base plate and the first region 4111 and the second region 4112. The first display module is disposed on the first side plate of the second, third and fourth sides of the first base plate and the protrusion between the first region 4111 and the second region 4112.

[0041] In some embodiments, the edge of the first frame can be fastened to the first step, pressing against the perimeter of the first display module to fix the first display module. The middle area of ​​the first frame includes an opening, which exposes the middle display area of ​​the first display module, thus helping to reduce the thickness and weight of the display device and facilitating a thinner and lighter display device. As those skilled in the art will understand, the first frame can be replaced with a glass cover plate, which fastens to the first step and can fix the first display module by pressing it as a whole, thus contributing to a smooth surface of the display device and improving its aesthetics.

[0042] Combination Figure 6A and Figure 6B , Figure 6A and Figure 6B This is a schematic diagram of a second housing according to one embodiment of the present application. In some embodiments, the second housing 420 may include a second base plate 421 and a second side plate 422. The second side plate 422 is fixed to the periphery of the second base plate 421 and extends to one side of the second base plate. The second side plate 422 and the second base plate 421 together form a second receiving cavity 423 with one open end, which can be used to receive a second display module. According to one embodiment of the present application, the length of the second base plate may be 274 mm, and the width may be 178 mm; the height of the extended second side plate may be 3.38 mm.

[0043] In some embodiments, the second base plate 421 includes a sixth region 4211, a seventh region 4212, an eighth region 4213, and a ninth region 4214, which are sequentially distributed from the lower first side to the opposite upper second side. Each region boundary includes a protruding ridge 423 extending from the second base plate into the second receiving cavity. This ridge can physically isolate the regions and also serve as a reinforcing rib of the second shell, improving its strength and resistance to bending and deformation. In some embodiments, the protruding ridge of adjacent regions can be the same to reduce the wall thickness and weight of the second shell structure and facilitate the distribution of regions within the second shell. According to one embodiment of this application, the height of the protruding ridge extending into the first receiving cavity can be 1.8-2 mm; preferably 1.9 mm.

[0044] In some embodiments, the sixth region 4211 is located near the first side below the second base plate, and its area can be 5%, 7%, or 10% of the area of ​​the second base plate. According to one embodiment of this application, the sixth region 4211 can be used to accommodate a button control panel 375. Correspondingly, the second side plate has multiple button holes and multiple sound-collecting holes (not shown in the figure) at corresponding positions. The button holes are used to accommodate control buttons 371-374, and the sound-collecting holes are used to collect sound.

[0045] In some embodiments, the seventh region 4212 is located in the middle and near the bottom of the second base plate, wherein the seventh region 4212 occupies the largest area of ​​the second base plate. In some embodiments, the area of ​​the seventh region 4212 may be more than 50%, 55%, 60%, or 70% of the area of ​​the second base plate. In some embodiments, the seventh region 4212 includes multiple fifth partition bars 4241, which are arranged in a crisscross pattern and divide the seventh region 4212 into multiple sub-regions. The fifth partition bars can serve as reinforcing ribs of the second shell to increase the strength of the second shell.

[0046] In some embodiments, the seventh region 4212 may further include channels 425 and 426, wherein channel 425 is located above the seventh region 4212 near the corner of the first housing, and channel 426 is located away from the first housing and connects the sixth region 4211 and the eighth region 4213, and can be used to accommodate the wiring of the dual-screen display device. In some embodiments, channels 425 and 426 may penetrate a portion of the spacer 4241, and can cooperate with the spacer 4241 through which the channels do not pass to form reinforcing ribs of different heights, increasing the strength of the seventh region 4212. According to one embodiment of this application, channel 425 can be used to accommodate a portion of the connecting cable 310, and can limit the connecting cable 310 located in the second housing; channel 426 can be used to accommodate the connection line between the button control board and the second processing board, and limit the connection line between the button control board and the second processing board.

[0047] In some embodiments, the second base plate 421 may further include a cable retractor 427 disposed in the channel 425, which can be used to control the length of the cable to adapt to changes in the length of the connecting cable during the folding and unfolding of the display device. For example, when the display device is in the unfolded state, the length of the connecting cable needs to be shortened, and the cable retractor can store the connecting cable; when the display device is in the folded state, the length of the connecting cable needs to be increased, and the cable retractor can release the connecting cable.

[0048] In some embodiments, the eighth region 4213 is located in the middle and near the top of the second base plate, and its area can be 3%, 4%, or 5% of the area of ​​the second base plate. According to one embodiment of this application, the eighth region 4213 is used to accommodate the second processing board 240. In some embodiments, the eighth region 4213 and the fourth region 4114 are symmetrically arranged with respect to the connecting axis of the first housing and the second housing, so that the distance from the first processing board and the second processing board, the connecting cable to the connecting axis of the first housing and the second housing is the same. During the folding and opening of the first housing and the second housing, there will be no problems of wire pulling or component squeezing interference, the assembly process is unified, and the assembly defect rate of the production line is reduced. In addition, the symmetrical arrangement of the eighth region 4213 and the fourth region 4114 can make the radiated electromagnetic waves of the first processing board and the second processing board cancel each other out, the differential signal impedance and parasitic inductance are consistent, the differential signal reflection and common mode noise are reduced, which is conducive to balancing the overall electromagnetic radiation of the display device and alleviating the interference problems of electromagnetic handwriting, wireless network, etc. Furthermore, the first processing board and the second processing board are centrally and symmetrically arranged, and the heat dissipation path of the housing is balanced, which can avoid local high temperature on one side and improve the stability of the dual-screen display device for long-term synchronous operation.

[0049] In some embodiments, the ninth region 4214 is located above the second base plate, and its area can be 10%, 15%, or 20% of the area of ​​the second base plate. In some embodiments, the ninth region 4214 includes a sixth dividing strip 4242, which divides the region 4214 into parallel sub-regions 42151-42155, wherein sub-regions 42151-42154 are located on both sides of sub-region 42155, and the area of ​​sub-regions 42151-42154 can be 1%, 1.2%, 1.3%, or 1.5% of the area of ​​the second base plate, and the area of ​​sub-region 42155 is 10%, 11%, 12%, or 15% of the area of ​​the second base plate. By dividing the ninth region 4215 into a larger sub-region and distributing four smaller sub-regions on both sides thereof, the structural strength of the ninth region 4215 can be improved. In some embodiments, sub-region 42155 may include multiple third support bars 4291, which can support components disposed in sub-region 42155, divide sub-region 42155, and act as reinforcing ribs in sub-region 42155 to improve the strength of sub-region 42155. According to one embodiment of this application, sub-region 42155 is used to accommodate a second circuit board 250.

[0050] In some embodiments, the ninth region 4215 and the fifth region 4115 are also symmetrically arranged with respect to the connection axis of the first housing and the second housing, so that the receiving groove, support bar and positioning structure of the first circuit board and the second circuit board are mirror images of each other, and the structural components such as housing mold, internal support pad, and shielding component can be interchanged, reducing the number of molds and material types, saving production raw materials and reducing mass production costs.

[0051] In some embodiments, the second side plate located on the fourth side of the second base plate includes a plurality of second grooves 4221, which can be used to accommodate an adsorption element (such as a magnet). In some embodiments, the second grooves 4221 are on the same horizontal line as the first grooves 4121 so that the first housing and the second housing can be attracted to each other when the display device is folded.

[0052] In some embodiments, the side of the second side plate away from the second base plate includes a third step 4222 facing the second receiving portion, which can be used to receive the second face frame. The second face frame is disposed on the third step and can fix the second display module in the second receiving portion. In some embodiments, the side of the second side plate away from the second base plate may also include a fourth step 4223 facing the second receiving portion, which can be used to receive the second display module and limit the position of the second display module. In some embodiments, the fourth step is closer to the second receiving portion than the third step. In some embodiments, the depth of the fourth step is greater than the depth of the third step.

[0053] According to one embodiment of this application, a fourth step may also be included on the protrusion between the sixth region 4211 and the seventh region 4212. Thus, the fourth step is located on the second side plates of the second, third, and fourth sides of the second base plate and the protrusion between the sixth region 4211 and the seventh region 4212. The second display module may be disposed on the second side plates of the second, third, and fourth sides of the second base plate and the protrusion between the sixth region 4211 and the seventh region 4212.

[0054] In some embodiments, the edge of the second frame is fastened to the third step, which can press the perimeter of the second display module to fix the second display module. The middle area of ​​the second frame includes an opening, which can expose the middle display area of ​​the second display module, which helps to reduce the thickness and weight of the display device and facilitates the thinning of the display device. As those skilled in the art will understand, the second frame can be replaced by a glass cover plate, which is fastened to the fourth step and can be used to fix the second display module by pressing it as a whole, which helps to make the surface of the display device flat and improves the aesthetics of the display device.

[0055] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of the invention.

Claims

1. A dual-screen display device, comprising: The system comprises a first housing, a first display module, and a first face frame, wherein the first display module is disposed in the first housing, and the first face frame fixes the first display module in the first housing; The second housing, the second display module, and the second frame are provided, wherein the second display module is disposed in the second housing, and the second frame fixes the second display module in the second housing; A first processing board is disposed in the first housing and is used to control the display content of the first display module; The second processing board is disposed in the second housing and is used to control the display content of the second display module; A connecting cable connects the main processing board and the sub-processing board; as well as A power supply battery is disposed in the first housing and connected to the main processing board; The first housing includes a first base plate, a first side plate, and a first protruding ridge. The first side plate is disposed around the first base plate and extends outward from a first side of the first base plate, forming a first receiving cavity with the first base plate. The first protruding ridge extends from the first base plate into the first receiving cavity, dividing the first base plate into a first region, a second region, a third region, a fourth region, and a fifth region arranged sequentially from a first side to an opposite second side. The first processing plate is located in the fourth region, and the power supply battery is located in the second region. The second region includes a first channel for accommodating a portion of the connecting cable. The second housing includes a second base plate, a second side plate, and a second protrusion. The second side plate is disposed around the second base plate and extends outward from a first side of the second base plate, forming a second receiving cavity with the second base plate. The second protrusion divides the second base plate into a sixth region, a seventh region, an eighth region, and a ninth region arranged sequentially from the first side to the opposite second side. The second processing plate is located in the eighth region, which includes a second channel that communicates with the first channel and is used to accommodate part of the connecting cable.

2. The dual-screen display device according to claim 1, wherein, The first housing further includes multiple first dividing strips, second dividing strips, third dividing strips, and fourth dividing strips. The first dividing strips divide the first region into multiple first sub-regions; the second dividing strips divide the third region into multiple third sub-regions; the third dividing strips divide the fourth region into multiple fourth sub-regions; the fourth dividing strips divide the fifth region into multiple fifth sub-regions; the second housing further includes one or more fifth dividing strips and a sixth dividing strip. The fifth dividing strips divide the seventh region into multiple seventh sub-regions; the sixth dividing strips divide the ninth region into multiple ninth sub-regions.

3. The dual-screen display device according to claim 2, wherein, It further includes: a WiFi wireless module, a speaker, a communication control board, or a power port, wherein the WiFi wireless module, the speaker, the communication control board, or the power port is located in the first sub-region.

4. The dual-screen display device according to claim 2, wherein, The second region includes a third channel that connects the first region and the third region.

5. The dual-screen display device according to claim 4, further comprising: The circuit traces are located in the third channel and connect the power connector and the first processing board.

6. The dual-screen display device according to claim 5, wherein, When the power supply battery is located in the second area, the power supply battery presses against the connection cable and / or the circuit trace.

7. The dual-screen display device according to claim 2, further comprising: The communication module is located in the third sub-region and is connected to the first processing board.

8. The dual-screen display device according to claim 1, further comprising: A button control board and one or more control buttons, the control buttons being disposed on the second housing and used to output commands; the button control board being disposed in the sixth region and connected to the second processing board, used to sense the action of the control buttons.

9. The dual-screen display device according to claim 1, further comprising: A first circuit board and a second circuit board, wherein the first circuit board is located in the fifth sub-region and is connected between the first processing board and the first display module; The second circuit board is located in the ninth sub-region and is connected between the second processing board and the second display module.

10. The dual-screen display device according to claim 1, wherein the first housing and the second housing are foldably and rotatably connected; the fourth region and the eighth region are symmetrically arranged with respect to the connecting axis of the first housing and the second housing; and the fifth region and the ninth region are symmetrically arranged with respect to the connecting axis of the first housing and the second housing.

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