Electronic terminal device

Abstract

This application provides an electronic terminal device including a touch screen, a touch circuit board assembly, and a battery. The touch circuit board assembly includes a touch circuit chip, a display driver circuit chip, and a voltage regulator / filtering device. A portion of the touch circuit chip and the voltage regulator / filtering device are located on both sides of the display driver circuit chip in the width direction, and the touch circuit chip, display driver circuit chip, and voltage regulator / filtering device are staggered from the battery in the thickness direction. This shortens the length of the touch circuit board assembly and decouples the thickness dimensions of the main chip of the touch circuit board assembly from those of the battery, thereby increasing the size of the battery in both the length and thickness directions and thus improving battery capacity.

Description

Technical Field

[0001] This application relates to the structural layout of internal components in electronic terminal equipment. Background Technology

[0002] Currently, electronic terminal products with foldable structures are becoming increasingly common. Taking mobile phones as an example, foldable phones can be divided into inward-folding and outward-folding phones based on the shape of the screen when folded. Inward-folding phones can be further divided into large-sized inward-folding phones (similar to tablets) and small-sized inward-folding phones (similar to flip phones). Small-sized inward-folding phones are foreseeably one of the future trends in mobile phone products, as they utilize more flexible circuit structures internally.

[0003] Figure 1A and Figure 1B This illustrates a small, inward-folding mobile phone. (Example:) Figure 1A As shown, a small-sized inward-folding mobile phone can be structurally divided into an upper part 10 and a lower part 20. The upper part 10 is generally used to stack and arrange components such as the motherboard, camera, and side buttons. Since the components in the upper part 10 are stacked compactly with little extra space, the battery is usually placed in the lower part 20. Typically, the lower part 20 is divided along the length of the phone into a hinge area 201, a battery area 202, and a sub-board area 203. Because the lower part 20 needs to accommodate many components and also consider the influence of other structures, there are many limitations on its dimensions along the length of the phone. For the hinge area 201, the overall size of the phone, the touchscreen, and the hinge implementation method affect its size. For the battery area 202, the overall size of the phone, battery specifications, and charging rate and energy density requirements affect its size. For the sub-board area 203, the requirements for antenna grounding and component spring points necessitate the existence of a sub-board and affect its size. Furthermore, a loudspeaker is typically required to be installed in the sub-board area 203. The size of the loudspeaker is coupled with the size of the sub-board, and the two also affect the width dimension of the sub-board area 203. Moreover, the dimensions of the above three areas are coupled with each other.

[0004] In conclusion, given the demand for larger battery capacity in current small-sized inward-folding phones, changing the layout of components in other spaces to increase battery space and accommodate a larger battery becomes a feasible solution. Summary of the Invention

[0005] In view of this, an electronic terminal device is proposed. By changing the structural layout of the internal components of the electronic terminal device without changing the overall size of the device, the battery space can be increased to accommodate a larger battery, thereby increasing the battery capacity.

[0006] Therefore, the technical solution adopted in this application is as follows.

[0007] In a first aspect, embodiments of this application provide an electronic terminal device, which includes a touch screen for display, a touch circuit board assembly, and a battery. The touch circuit board assembly includes a touch circuit chip, a display driver circuit chip, and a voltage regulator / filtering device. The electronic terminal device has a length direction, a width direction, and a thickness direction that are perpendicular to each other. The length direction is consistent with the length direction of the touch screen, the width direction is consistent with the width direction of the touch screen, and the thickness direction is perpendicular to the surface of the touch screen. The touch screen, the battery, and the touch circuit board assembly are arranged overlapping each other along the thickness direction.

[0008] Some of the components of the touch circuit chip and the voltage stabilizing and filtering functional device are located on both sides of the width direction of the display driving circuit chip, and the touch circuit chip, the display driving circuit chip, and the voltage stabilizing and filtering functional device are arranged offset from the battery along the thickness direction.

[0009] By adopting the above technical solution, the length dimension of the touch circuit board assembly (i.e., the touch screen device area of ​​the touch screen) can be shortened, and the thickness dimension of the main chip of the touch circuit board assembly and the battery can be decoupled. Therefore, the length and thickness dimensions of the battery can be increased, thereby increasing the battery capacity.

[0010] In one possible implementation of the first aspect, the electronic terminal device further includes a touchscreen board-to-board interface for the touchscreen, wherein the touch circuit chip and the portion of the devices are arranged overlapping the touchscreen board-to-board interface in the width direction.

[0011] By adopting the above structural layout, the length dimension of the touch circuit board assembly (i.e., the touch screen device area of ​​the touch screen) can be further shortened, thus the length dimension of the battery can be further increased, thereby further improving the battery capacity.

[0012] In one possible implementation according to the first aspect, the electronic terminal device includes a motherboard, a sub-board, a touchscreen flexible circuit board, and a first motherboard flexible circuit board. The motherboard and the sub-board are located on opposite sides of the battery along its length. The motherboard and the sub-board are arranged overlapping the touchscreen along its thickness. One end of the touchscreen flexible circuit board is connected to the touchscreen, and the other end of the touchscreen flexible circuit board is provided with a connector for forming a touchscreen board-to-board interface. The connector is mounted on the sub-board. One end of the first motherboard flexible circuit board is connected to the motherboard, and the other end of the first motherboard flexible circuit board is connected to the connector.

[0013] By adopting the above technical solution, compared with the existing structure where the touchscreen and motherboard can only achieve electrical signal communication through a sub-board, the above technical solution enables the touchscreen and motherboard to achieve electrical signal communication without going through a sub-board. It also saves the space of a connector, simplifies the related structure of the sub-board, and thus reduces its size. This allows for an increase in battery size, thereby improving battery capacity.

[0014] In one possible embodiment according to the first aspect, the connector includes a connector base and a connecting terminal disposed on the connector base for connection to the other end of the first mainboard flexible circuit board, and the connector base is fixed to the sub-board such that the connecting terminal faces away from the sub-board.

[0015] By adopting the above technical solution, a structural layout is provided that facilitates the connection between the first motherboard flexible circuit board and the touch screen flexible circuit board.

[0016] In one possible implementation according to the first aspect, the electronic terminal device further includes a limiting portion disposed on the sub-plate, and the connector base is mounted at the limiting portion.

[0017] By adopting the above technical solution, the predetermined installation position of the connector base on the sub-board is planned, avoiding the installation of the connector base in other parts of the sub-board, which would have an adverse effect on other components of the sub-board.

[0018] In one possible implementation according to the first aspect, the joint base is fixed together with the sub-plate by adhesive bonding.

[0019] By adopting the above technical solution, the connector can be fixed to the sub-plate in a simple and effective way.

[0020] In one possible implementation according to the first aspect, the electronic terminal device includes a motherboard, a sub-board, and a flexible touchscreen circuit board. The motherboard and the sub-board are located on opposite sides of the battery along its length. The motherboard and the sub-board are arranged overlapping the touchscreen along its thickness. One end of the flexible touchscreen circuit board is connected to the touchscreen, and the other end of the flexible touchscreen circuit board is provided with a connector for forming a touchscreen board-to-board interface. The flexible touchscreen circuit board extends from the touchscreen to the motherboard, such that the connector is connected to the motherboard.

[0021] By adopting the above technical solution, compared with the existing structure where the touchscreen and motherboard can only achieve electrical signal communication through a sub-board, the above technical solution enables the touchscreen and motherboard to achieve electrical signal communication without going through a sub-board, and saves the space of two connectors, greatly simplifying the related structure of the sub-board and thus reducing its size. This allows for an increase in battery size, thereby increasing battery capacity.

[0022] In one possible implementation according to the first aspect, the electronic terminal device further includes at least one motherboard flexible circuit board extending from the motherboard toward the sub-board, and the touch screen flexible circuit board extending side-by-side with the at least one motherboard flexible circuit board at the same location in the thickness direction.

[0023] By adopting the above technical solution, the problem of the battery size being reduced in the thickness direction due to the overlapping arrangement of the touch screen flexible circuit board and the motherboard flexible circuit board is avoided, thus ensuring the battery capacity.

[0024] In one possible implementation of the first aspect, the touchscreen flexible circuit board and the at least one motherboard flexible circuit board are located on either side of the thickness direction of the battery.

[0025] By adopting the above technical solutions, the layout of flexible circuit boards and batteries becomes more flexible and can be applied to different electronic terminal devices.

[0026] In one possible implementation according to the first aspect, the electronic terminal device includes a motherboard, a sub-board, and at least one flexible motherboard circuit board, the motherboard and the sub-board being located on opposite sides of the battery along its length, the motherboard and the sub-board being arranged overlapping the touchscreen along its thickness, the at least one flexible motherboard circuit board extending from the motherboard to the sub-board and connected to the sub-board, and one of the at least one flexible motherboard circuit boards being used to transmit radio frequency signals.

[0027] By adopting the above technical solution, the coaxial cable used to transmit radio frequency signals between the motherboard and the sub-board in traditional electronic terminal equipment can be omitted. This saves the space occupied by the coaxial cable and transfers it to the battery space, allowing the battery to be manufactured in a larger size, thereby increasing the battery capacity.

[0028] In one possible implementation of the first aspect, another flexible circuit board in the at least one motherboard flexible circuit board is used to transmit digital-to-analog signals, wherein the radio frequency signals and the digital-to-analog signals are transmitted in parallel and in separate paths.

[0029] By adopting the above technical solution, the parallel transmission of the split-path signal can avoid mutual interference between radio frequency signals and digital-analog signals when they are transmitted in the flexible circuit board of the motherboard.

[0030] In one possible implementation of the first aspect, the radio frequency signal is a low-frequency radio frequency signal.

[0031] By adopting the above technical solution, the problem of excessive signal loss caused by transmitting high-frequency radio frequency signals through the motherboard's flexible circuit board can be avoided.

[0032] In one possible embodiment according to the first aspect, the electronic terminal device further includes a frame and a speaker, the frame having a partition wall, the battery and the speaker being respectively disposed in different spaces separated by the partition wall.

[0033] The loudspeaker includes a housing and a sound-generating component. The interior of the housing is formed as a cavity, and the sound-generating component is housed within the cavity. A portion of the housing overlaps with the partition wall along the thickness direction.

[0034] By adopting the above technical solution, the speaker housing can be constructed to occupy a portion of the space left by omitting the coaxial cable, since the coaxial cable is omitted. Furthermore, this portion of the housing can be constructed to overlap with the partition wall along its thickness, thereby increasing the battery space while ensuring speaker performance.

[0035] In one possible implementation of the first aspect, the electronic terminal device is a mobile communication device.

[0036] By adopting the above technical solution, a specific applicable scenario for the technical solution of this application is defined.

[0037] In one possible implementation of the first aspect, the mobile communication device is configured to have an inward folding structure.

[0038] By adopting the above technical solution, the scenarios in which the technical solution of this application is particularly applicable are limited.

[0039] These and other aspects of this application will become more apparent in the description of the following embodiments(s). Attached Figure Description

[0040] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0041] Figure 1A This is a schematic diagram illustrating the structure of an existing small-sized folding phone.

[0042] Figure 1B It shows Figure 1A A schematic diagram of a partial structure of a small-sized foldable phone.

[0043] Figure 1C It shows Figure 1A A schematic diagram of part of the internal structure of a small-sized foldable phone.

[0044] Figure 2A This is a schematic diagram showing a partial structure of an electronic terminal device according to a first embodiment of this application.

[0045] Figure 2B It shows Figure 2A An enlarged schematic diagram of region S1 in the diagram.

[0046] Figure 3A This is a cross-sectional schematic diagram showing a partial structure of an electronic terminal device according to a second embodiment of this application.

[0047] Figure 3B It shows Figure 3A An enlarged schematic diagram of region S2 in the diagram.

[0048] Figure 3C It shows Figure 3B The diagram shows a portion of the structure, primarily including the sub-board, touchscreen, touchscreen flexible circuit board, and first mainboard flexible circuit board.

[0049] Figure 3D It is shown in the form of a top view. Figure 3C A schematic diagram of the structure.

[0050] Figure 4A This is a schematic diagram showing a partial structure of an electronic terminal device according to a third embodiment of this application.

[0051] Figure 4B It shows Figure 4A A sectional view along the AA direction.

[0052] Figure 4C It shows Figure 4BAn enlarged schematic diagram of region S3 in the diagram.

[0053] Figure 4D It shows Figure 4A Another schematic diagram of the partial structure of the electronic terminal device in the diagram.

[0054] Figure 4E It shows Figure 4D A schematic diagram of the second motherboard flexible circuit board.

[0055] Figure 4F It shows Figure 4E A schematic diagram of the structure of the third connector of the second motherboard flexible circuit board.

[0056] Explanation of reference numerals in the attached figures

[0057] 10 Upper half 20 Lower half 201 Hinge area 202 Battery area 203 Sub-board area P10 Sub-board FTP10 Touch screen flexible circuit board FTP20 Main board flexible circuit board

[0058] 2. Lower half 21. Hinge area 22. Battery area 23. Sub-board area

[0059] P1 First touch circuit board; P2 Second touch circuit board; C1 Touch circuit chip; C2 Partial voltage stabilizing and filtering components; C3 Display driver circuit chip.

[0060] SC Touchscreen P3 Sub-board FTP1 Touchscreen Flexible Circuit Board K1 First Connector K11 First Connector Base K12 First Connecting Terminal FTP2 First Main Board Flexible Circuit Board K2 Second Connector K21 Second Connector Base K22 Second Connecting Terminal SL Limiting Part GL Adhesive Layer POW Power Connector

[0061] FR frame FR1, partition wall SPK, speaker SPK1, housing SPK2, sound-generating assembly FTP3, second mainboard flexible circuit board K3, third connector FTP4, third mainboard flexible circuit board

[0062] L represents the length direction, W represents the width direction, and T represents the thickness direction. Detailed Implementation

[0063] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0064] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0065] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0066] In this application, unless otherwise specified, "length direction," "width direction," and "thickness direction" refer to the length direction, width direction, and thickness direction of the electronic terminal device (in its unfolded, non-folded state), respectively. The length direction is consistent with the length direction of the touchscreen of the electronic terminal device, the width direction is consistent with the width direction of the touchscreen of the electronic terminal device, and the thickness direction is perpendicular to the surface of the touchscreen of the electronic terminal device. Furthermore, the length direction, width direction, and thickness direction are mutually perpendicular. Further, "overlapping along... direction" means that when viewed along this direction, the two components at least partially overlap each other (i.e., there is at least partial occlusion between the two components); "offset along... direction" means that when viewed along this direction, the two components are completely offset from each other (i.e., there is no overlap or occlusion).

[0067] First, the technical concept of this application is explained. For electronic terminal devices with a structural layout similar to small-sized inward-folding mobile phones in the prior art, this application proposes a technical idea of ​​expanding the battery space primarily by changing the structural layout of various components within the sub-board space. In this way, even without increasing the overall size of the electronic terminal device, a larger battery can be accommodated by increasing the size of the battery space, thereby increasing the battery capacity.

[0068] The following describes the structure of an electronic terminal device according to a first embodiment of this application.

[0069] (Structure of the electronic terminal device according to the first embodiment of this application)

[0070] like Figure 2A and Figure 2B As shown, in this embodiment, the electronic terminal device is a small-sized foldable phone. Similar to the structural space division of small-sized foldable phones described in the background art, as... Figure 2A and Figure 2BAs shown, the electronic terminal device according to the first embodiment of this application includes an upper part and a lower part 2 (the lower part is mainly shown in the figure). The upper part and the lower part 2 can rotate relative to each other around the part where they are connected by a pivot structure. The lower part 2 is divided into a pivot region 21, a battery region 22, and a sub-board region 23 in the length direction L. The pivot region 21 is located closest to the upper part, the battery region 22 is located between the pivot region 21 and the sub-board region 23 in the length direction L, and the sub-board region 23 is located furthest from the upper part. The electronic terminal device according to the first embodiment of this application includes a touch screen for display disposed on its front side, the touch screen covering the entire front side of the electronic terminal device (including substantially the entire front side). The electronic terminal device also includes a touch screen flexible circuit board FTP1 and a first connector K1 disposed at one end of the touch screen flexible circuit board FTP1 (which forms a touch screen board-to-board interface), the first connector K1 being able to communicate with the motherboard. Further, the electronic terminal device also includes a battery disposed in the battery region 22 and a touch circuit board assembly disposed in the sub-board region 23. The battery's size essentially covers the entire battery area 22. The touchscreen, battery, and touch circuit board assembly are arranged overlapping along the thickness direction T, and the battery and touch circuit board assembly are arranged overlapping along the length direction L.

[0071] like Figure 2A and Figure 2B As shown, the touch circuit board assembly includes a first touch circuit board P1 and a second touch circuit board P2, as well as a touch circuit chip C1, voltage stabilizing and filtering functional devices (including a portion of voltage stabilizing and filtering functional devices C2 and other voltage stabilizing and filtering functional devices located between this portion of voltage stabilizing and filtering functional devices C2 and the touch circuit chip C1) and a display driver circuit chip C3 arranged on these two circuit boards P1 and P2. Specifically, the touch circuit chip C1 and all voltage stabilizing and filtering functional devices are arranged on the first touch circuit board P1, and the display driver circuit chip C3 is arranged on the second touch circuit board P2. The first touch circuit board P1 and the second touch circuit board P2 are connected by necessary structures to achieve electrical signal communication. Further, when viewed along the thickness direction T, the touch circuit chip C1 has a rectangular shape, and a portion of the voltage stabilizing and filtering functional devices C2 is located within the rectangular area, while the display driver circuit chip C3 has a rectangular shape. In the prior art, the touch circuit chip and a portion of the voltage regulation and filtering functional devices are arranged to overlap with the battery along the thickness direction, and the touch circuit chip C1, the portion of the voltage regulation and filtering functional devices C2, and the first connector K1 are staggered along the width direction W. The increase in battery space is limited by this structural layout. To overcome this limitation on increasing battery space, in this embodiment, as... Figure 2A and Figure 2BAs shown, the touch circuit chip C1, a portion of the voltage stabilizing and filtering functional devices C2, and the display driving circuit chip C3 are staggered from the battery along the thickness direction T, thus decoupling the dimensions of these devices and chips from the battery in the thickness direction T. The touch circuit chip C1 and a portion of the voltage stabilizing and filtering functional devices C2 are located on both sides of the display driving circuit chip C3 in the width direction, and the touch circuit chip C1 and a portion of the voltage stabilizing and filtering functional devices C2 are overlapped with the first connector K1 along the width direction W.

[0072] Thus, through the above structural layout, the main chip of the touch circuit board assembly and the battery can be decoupled in the thickness direction T, and the size of the touch circuit board assembly (i.e., the touch screen device area of ​​the touch screen) in the length direction L can be shortened. Therefore, the size of the battery in both the thickness direction T and the length direction L can be increased, thereby increasing the battery capacity. The structure of the electronic terminal device according to the second embodiment of this application is described below.

[0073] (Structure of the electronic terminal device according to the second embodiment of this application)

[0074] like Figures 3A to 3D As shown, in this embodiment, the electronic terminal device is a small-sized foldable phone. Figures 3A to 3D As shown, similar to the structural layout in the first embodiment, the electronic terminal device according to the second embodiment of this application includes an upper part and a lower part 2 (the lower part is mainly shown in the figure). The upper part and the lower part 2 can rotate relative to each other around the part where they are connected by a pivot structure. The lower part 2 is divided into a pivot region 21, a battery region 22, and a sub-board region 23 in the length direction L. The pivot region 21 is located closest to the upper part, the battery region 22 is located between the pivot region 21 and the sub-board region 23 in the length direction L, and the sub-board region 23 is located furthest from the upper part. The electronic terminal device according to the second embodiment of this application includes a touch screen SC disposed on its front side for display, the touch screen SC covering the entire front side of the electronic terminal device (including substantially the entire front side, see...). Figure 3A and Figure 3B (The lower side of the middle).

[0075] Furthermore, such as Figures 3A to 3D As shown, the electronic terminal device according to the second embodiment of this application includes a motherboard, a sub-board P3, a touchscreen flexible circuit board FTP1, and a first motherboard flexible circuit board FTP2. The motherboard is located in the upper half, and the sub-board P3 is located in the lower half 2, with the motherboard and sub-board P3 located on opposite sides of the battery along its length. Signals and power are transmitted between the motherboard and sub-board P3 via the flexible circuit board. The sub-board P3 is also connected to a power connector POW, thereby enabling the transmission of external power to the electronic terminal device.

[0076] In this embodiment, as Figures 3A to 3D As shown, one end of the flexible touchscreen circuit board FTP1 is connected to the touchscreen. The flexible touchscreen circuit board FTP1 extends by repeatedly bending around the edges of multiple devices arranged within the sub-board region 23 (e.g., the edge of the first touchscreen circuit board P1), so that the other end of the flexible touchscreen circuit board FTP1 is located at a predetermined position on the sub-board P3. Specifically, as shown... Figure 3B and Figure 3C As shown, the other end of the flexible touchscreen circuit board FTP1 is provided with a first connector K1 (which forms a touchscreen board-to-board interface). The first connector K1 includes a first connector base K11 and a first connecting terminal K12. The first connecting terminal K12 is disposed on the first connector base K11 and is used to connect to the second connecting terminal K22 of the second connector K2 of the first motherboard flexible circuit board FTP2. The back of the first connector base K11 is bonded to a predetermined part of the sub-board P3 by an adhesive layer GL formed by adhesive, so that while fixing the first connector K1 to the sub-board P3, the first connecting terminal K12 protrudes in a direction away from the sub-board P3.

[0077] In this embodiment, as Figures 3A to 3D As shown, one end of the first motherboard flexible circuit board FTP2 is connected to the motherboard. The first motherboard flexible circuit board FTP2 extends from the motherboard, roughly along its length L, across the hinge and battery structures, to the sub-board P3, such that the other end of the first motherboard flexible circuit board FTP2 is located at a predetermined position on the first connector K1 of the fixed touchscreen flexible circuit board FTP1 on the sub-board P3. Specifically, as shown... Figure 3B and Figure 3C As shown, a second connector K2 is provided at the other end of the first motherboard flexible circuit board FTP2. The second connector K2 includes a second connector base K21 and a second connecting terminal K22. The second connecting terminal K22 is disposed on the second connector base K21 and is used to match and connect with the first connecting terminal K12 of the first connector K1 of the touch screen flexible circuit board FTP1.

[0078] Compared with the structure described in the second embodiment of this application, in Figure 1A and Figure 1B Among the existing small-sized foldable phones shown, such as Figure 1C As shown, the touchscreen flexible circuit board FTP10 extends from the touchscreen to the sub-board P10 and connects to one connector of the sub-board P10. The sub-board P10 then has another connector that connects to the mainboard flexible circuit board FTP20, enabling electrical signal communication between the touchscreen and the mainboard via the sub-board P10. In contrast, since the electronic terminal device according to the second embodiment of this application connects the touchscreen flexible circuit board FTP1 and the first mainboard flexible circuit board FTP2 directly without going through the sub-board P3, the space of one connector on the sub-board P3 is saved (by comparison). Figure 1Cand Figure 3D (This can be seen intuitively). In this way, the device layout on the sub-board P3 can be redesigned, and the saved space can be converted into a reduction in the length L of the sub-board P3, thereby expanding the size of the battery area 22 to increase the battery size and improve the battery capacity.

[0079] Furthermore, in this embodiment, in order to accurately position the first connector K1 at a predetermined position on the sub-board P3, the electronic terminal device according to the second embodiment of this application further includes a limiting part SL. The limiting part SL is formed by bending a steel sheet and is disposed at the predetermined position on the sub-board P3. Thus, when the first connector K1 is fixed to the sub-board P3, the first connector K1 can be aligned with the limiting part SL for installation, thereby fixing the first connector K1 at the predetermined position on the sub-board P3 without adversely affecting other devices on the sub-board P3.

[0080] Alternatively, other technical solutions can be adopted to achieve the same effect. For example, in a variant of the second embodiment, the electronic terminal device includes a motherboard, a sub-board, and a flexible touchscreen circuit board. One end of the flexible touchscreen circuit board is connected to the touchscreen, and the flexible touchscreen circuit board can extend approximately along its length, so that the connector at the other end of the flexible touchscreen circuit board is connected to the motherboard. In this way, the touchscreen can directly communicate with the motherboard through the flexible touchscreen circuit board, further saving space on the sub-board compared to the second embodiment. It should be noted that in the above variant, the electronic terminal device generally needs to include at least one flexible motherboard circuit board to connect to the motherboard and the sub-board. However, since the motherboard and the sub-board are arranged on both sides of the battery's length direction, the flexible motherboard circuit board will cross the battery as it extends from the motherboard towards the sub-board. In the above variant, the flexible touchscreen circuit board and at least one flexible motherboard circuit board can extend side by side at the same position in the thickness direction. This avoids the problem of the battery's thickness direction being reduced due to the flexible motherboard circuit board and the flexible touchscreen circuit board extending on both sides of the battery's thickness direction. Of course, to improve layout flexibility, the flexible touchscreen circuit board and the flexible motherboard circuit board can be located on either side of the battery's thickness direction.

[0081] The structure of the electronic terminal device according to the third embodiment of this application is described below.

[0082] (Structure of the electronic terminal device according to the third embodiment of this application)

[0083] like Figures 4A to 4F As shown, in this embodiment, the electronic terminal device is a small-sized foldable phone. Figures 4A to 4FAs shown, similar to the structural layout in the first embodiment, the electronic terminal device according to the third embodiment of this application includes an upper part and a lower part 2 (the lower part is mainly shown in the figure). The upper part and the lower part 2 can rotate relative to each other around the part where they are connected by a pivot structure. The lower part 2 is divided into a pivot region, a battery region 22, and a sub-board region 23 in the length direction L. The pivot region is located closest to the upper part, the battery region 22 is located between the pivot region and the sub-board region 23 in the length direction L, and the sub-board region 23 is located furthest from the upper part. The electronic terminal device according to the third embodiment of this application includes a touch screen for display disposed on its front side, the touch screen covering the entire front side of the electronic terminal device (including substantially the entire front side).

[0084] like Figure 4A and Figure 4D As shown, the electronic terminal device includes a motherboard, a sub-board P3, a first motherboard flexible circuit board FTP2, a second motherboard flexible circuit board FTP3, and a third motherboard flexible circuit board FTP4. The first motherboard flexible circuit board FTP2, the second motherboard flexible circuit board FTP3, and the third motherboard flexible circuit board FTP4 share a common portion but separate midway through their extensions. The first motherboard flexible circuit board FTP2 extends from the motherboard to the sub-board P3 and connects to the touchscreen board-to-board interface, enabling electrical signal communication between the motherboard and the touchscreen. The second motherboard flexible circuit board FTP3 extends from the motherboard to the sub-board P3 and connects to it. The second motherboard flexible circuit board FTP3 serves as one of the at least one motherboard flexible circuit boards, thereby transmitting low-frequency radio frequency signals between the motherboard and the sub-board P3. These low-frequency radio frequency signals have frequencies between 80MHz and 90MHz, and these low-frequency radio frequency signals serve as transmit and receive signals for an antenna, which can be implemented using the casing of the electronic terminal device. Figures 4D to 4F As shown, a third connector K3 is provided at one end of the second motherboard flexible circuit board FTP3. Thus, with... Figure 1A and Figure 1B Compared to the small-sized inward-folding mobile phone shown, the electronic terminal device according to the third embodiment of this application can omit the coaxial cable dedicated to transmitting radio frequency signals. Furthermore, the third motherboard flexible circuit board FTP4 extends from the motherboard to and is connected to the sub-board P3. The third motherboard flexible circuit board FTP4 serves as another flexible circuit board in the at least one motherboard flexible circuit board, thereby transmitting non-radio frequency signals (e.g., analog-to-digital signals) between the motherboard and the sub-board P3. To avoid mutual interference between radio frequency signals and analog-to-digital signals during transmission, the radio frequency signals and analog-to-digital signals are transmitted side-by-side in the motherboard flexible circuit board.

[0085] like Figures 4A to 4DAs shown, the electronic terminal device also includes a frame FR (also called a mid-frame) and a speaker SPK. The frame FR has a partition wall FR1 extending along its width direction W. The battery and speaker SPK are respectively disposed in different spaces separated by the partition wall FR1, and are located on opposite sides of the partition wall FR1 along its length. The speaker SPK includes a housing SPK1 and a sound-generating assembly SPK2. The interior of the housing SPK1 is formed as a cavity, and the sound-generating assembly SPK2 is housed within the cavity. Figure 1A and Figure 1B In the small-sized inward-folding mobile phone shown, the coaxial cable extends between the speaker SPK housing SPK1 and the partition wall FR1. In contrast, since the electronic terminal device according to the third embodiment of this application uses the second motherboard flexible circuit board FTP3 to transmit radio frequency signals, the coaxial cable is omitted, so that a portion of the speaker SPK housing SPK1 can protrude into the partition wall FR1 in the length direction L (see mainly...). Figure 4B and Figure 4C This allows a portion of the housing SPK1 to overlap with the partition wall FR1 along the thickness direction T. Because a portion of the speaker SPK's housing SPK1 overlaps with the partition wall FR1 along the thickness direction T, the dimensions of the speaker SPK's housing SPK1 in other directions can be reduced to ensure that the speaker SPK's performance is not degraded. This ultimately allows the installation space saved by omitting the coaxial cable to be used for battery space, thereby increasing the battery space to accommodate a larger battery and thus improving battery capacity.

[0086] The above content describes exemplary embodiments and related variations of the specific implementation of this application, and the following is a supplementary explanation.

[0087] i. The electronic terminal device of this application can be a mobile communication device, which can be configured with an inward folding structure, such as a small-sized inward folding mobile phone. It is understood that the electronic terminal device of this application is not limited to such an electronic terminal device with an inward folding structure, but can be applied in electronic terminal devices with similar structural layouts (including touch screen, motherboard, sub-board, battery, omitting the hinge structure), such as in electronic terminal devices such as tablet computers and laptop computers.

[0088] ii. The above embodiments illustrate different embodiments and variations that can achieve the purpose of this application. It is understood that, if there are no contradictions, the solutions, structures or features in these embodiments and variations can be combined with each other to form new solutions.

[0089] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, disclosure, and appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce a good effect.

[0090] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An electronic terminal device comprising a touchscreen for display, a touch circuit board assembly, and a battery, wherein the touch circuit board assembly includes a touch circuit chip, a display driver circuit chip, and a voltage regulator / filtering device; the electronic terminal device has a length direction, a width direction, and a thickness direction perpendicular to each other; the length direction is consistent with the length direction of the touchscreen; the width direction is consistent with the width direction of the touchscreen; the thickness direction is perpendicular to the surface of the touchscreen; and the touchscreen, the battery, and the touch circuit board assembly are arranged overlapping each other along the thickness direction. Some of the components of the touch circuit chip and the voltage stabilizing and filtering functional device are located on both sides of the width direction of the display driving circuit chip, and the touch circuit chip, the display driving circuit chip, and the voltage stabilizing and filtering functional device are arranged offset from the battery along the thickness direction.

2. The electronic terminal device according to claim 1, characterized in that, The electronic terminal device also includes a touchscreen board-to-board interface for the touchscreen, wherein the touch circuit chip and a portion of the voltage stabilizing and filtering functional device are arranged overlapping the touchscreen board-to-board interface along the width direction.

3. The electronic terminal device according to claim 1 or 2, characterized in that, The electronic terminal device includes a motherboard, a sub-board, a touch screen flexible circuit board, and a first motherboard flexible circuit board. The motherboard and the sub-board are located on opposite sides of the length direction of the battery. The motherboard and the sub-board are arranged overlapping the touch screen along the thickness direction. One end of the touch screen flexible circuit board is connected to the touch screen, and the other end of the touch screen flexible circuit board is provided with a connector for forming a touch screen board-to-board interface. The connector is installed on the sub-board. One end of the first motherboard flexible circuit board is connected to the motherboard, and the other end of the first motherboard flexible circuit board is connected to the connector.

4. The electronic terminal device according to claim 3, characterized in that, The connector includes a connector base and a connecting terminal. The connecting terminal is disposed on the connector base and is used to connect to the other end of the first main board flexible circuit board. The connector base is fixed to the sub-board, such that the connecting terminal faces away from the sub-board.

5. The electronic terminal device according to claim 4, characterized in that, The electronic terminal device also includes a limiting part, which is disposed on the sub-plate, and the connector base is installed at the limiting part.

6. The electronic terminal device according to claim 4, characterized in that, The base of the joint is fixed to the sub-plate by bonding.

7. The electronic terminal device according to claim 1 or 2, characterized in that, The electronic terminal device includes a motherboard, a sub-board, and a flexible touchscreen circuit board. The motherboard and the sub-board are located on opposite sides of the length of the battery. The motherboard and the sub-board are arranged overlapping the touchscreen along the thickness direction. One end of the flexible touchscreen circuit board is connected to the touchscreen, and the other end of the flexible touchscreen circuit board is provided with a connector for forming a touchscreen board-to-board interface. The flexible touchscreen circuit board extends from the touchscreen to the motherboard, so that the connector is connected to the motherboard.

8. The electronic terminal device according to claim 7, characterized in that, The electronic terminal device further includes at least one motherboard flexible circuit board, which extends from the motherboard toward the sub-board, and the touch screen flexible circuit board extends side by side with the at least one motherboard flexible circuit board at the same position in the thickness direction.

9. The electronic terminal device according to claim 8, characterized in that, The touchscreen flexible circuit board and the at least one motherboard flexible circuit board are located on either side of the thickness direction of the battery.

10. The electronic terminal device according to claim 1 or 2, characterized in that, The electronic terminal device includes a motherboard, a sub-board, and at least one flexible motherboard circuit board. The motherboard and the sub-board are located on opposite sides of the length direction of the battery. The motherboard and the sub-board are arranged overlapping the touch screen along the thickness direction. The at least one flexible motherboard circuit board extends from the motherboard to the sub-board and is connected to the sub-board. One of the at least one flexible motherboard circuit boards is used to transmit radio frequency signals.

11. The electronic terminal device according to claim 10, characterized in that, Another flexible circuit board in the at least one motherboard flexible circuit board is used to transmit digital-to-analog signals, and the radio frequency signals and the digital-to-analog signals are transmitted in parallel on separate paths.

12. The electronic terminal device according to claim 10, characterized in that, The radio frequency signal is a low-frequency radio frequency signal.

13. The electronic terminal device according to claim 10, characterized in that, The electronic terminal device also includes a frame and a speaker. The frame has partition walls, and the battery and the speaker are respectively disposed in different spaces separated by the partition walls. The loudspeaker includes a housing and a sound-generating component. The interior of the housing is formed as a cavity, and the sound-generating component is housed within the cavity. A portion of the housing overlaps with the partition wall along the thickness direction.

14. The electronic terminal device according to claim 1 or 2, characterized in that, The electronic terminal device is a mobile communication device.

15. The electronic terminal device according to claim 14, characterized in that, The mobile communication device is configured to have an inward folding structure.

Images