Signal transmission assembly and electronic equipment

Abstract

The utility model provides a signal transmission assembly and electronic equipment, the signal transmission assembly comprises a first circuit board and a second circuit board, the second circuit board and the first circuit board are partially stacked, the second circuit board is provided with a signal line group, the signal line group comprises a plurality of signal lines arranged in parallel, and the signal lines are arranged in parallel. The signal line is provided with an overlapping part which is laminated with the first circuit board, and the extending direction of the overlapping part is obliquely crossed with the extending direction of the first circuit board. The signal transmission assembly provided by the utility model has the advantage of relatively low internal crosstalk.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices. More specifically, it relates to a signal transmission component and an electronic device. Background Art

[0002] The driving board of the touch panel is connected to the main board or the controller through a flexible cable to transmit electrical signals and control signals from the main board to the driving board of the touch panel. The flexible cable can be bent to keep the internal structure of the device compact and efficient.

[0003] However, crosstalk is likely to occur between the flexible cable in the related art and the circuit components on circuit boards such as the driving board. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a signal transmission component to solve the technical problem that crosstalk is likely to occur between the flexible cable and the circuit components on circuit boards such as the driving board in the prior art.

[0005] In a first aspect, this application provides a signal transmission component, including a first circuit board and a second circuit board. The second circuit board is partially stacked with the first circuit board. A signal line group is provided on the second circuit board. The signal line group includes multiple signal lines arranged in parallel. The signal line group has an overlapping portion stacked with the first circuit board. The extending direction of the overlapping portion is obliquely intersecting with the extending direction of the first circuit board.

[0006] The beneficial effect of the signal transmission component provided by this application is that: compared with the prior art, the extending direction of the overlapping portion of the second circuit board and the first circuit board in the signal transmission component provided by this application has an included angle with the arrangement direction of the circuit components and / or the extending direction of the printed circuit in the first circuit board, thereby improving the isolation degree between the magnetic field generated by the first circuit board and the second circuit board, reducing the signal crosstalk between the first circuit board and the second circuit board, and thus making the signal transmission component provided by this application have the advantage of lower internal crosstalk.

[0007] Optionally, the first circuit board includes multiple circuit components. The overlapping portion is stacked with the circuit components. The extending direction of the overlapping portion is obliquely intersecting with the arrangement direction of the circuit components.

[0008] Optionally, the overlapping portion includes a first section and a second section connected to each other. The extending direction of the first section and the extending direction of the second section intersect.

[0009] Optionally, the included angle between the first section and the arrangement direction of the circuit components is 45°; the included angle between the second section and the arrangement direction of the circuit components is 45°;

[0010] The extending direction of the first section is orthogonal to that of the second section.

[0011] Optionally, the overlapping portion includes a plurality of the first sections and a plurality of the second sections, and the plurality of the first sections and the plurality of the second sections are alternately connected.

[0012] Optionally, the second circuit board is a flexible circuit board. One end of the second circuit board is connected to the first circuit board, and the second circuit board extends around an end of the first circuit board.

[0013] Optionally, the second circuit board further includes a base layer, and the signal line group is disposed on a surface of the base layer facing away from the first circuit board.

[0014] Optionally, the base layer has a set thickness so that the distance between the signal line group and the base layer facing the first circuit board is greater than a set threshold.

[0015] In a second aspect, the present application provides an electronic device, including a touch panel and a signal transmission component. The signal transmission component is the signal transmission component in any of the above embodiments, and the first circuit board is electrically connected to the touch panel.

[0016] It can be understood that the beneficial effects of the second aspect can refer to the relevant descriptions in the first aspect above, and will not be elaborated here.

[0017] Optionally, the second circuit board is located on a side of the first circuit board facing away from the touch panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Schematic diagram of the structure of the signal line group of the signal transmission component provided by the embodiment of the present application Figure 1 ;

[0020] Figure 2 Schematic diagram of the structure of the electronic device provided by the embodiment of the present application Figure 1 ;

[0021] Figure 3 Schematic diagram of the structure of the electronic device provided by the embodiment of the present application Figure 2 ;

[0022] Figure 4 For Figure 3Partial enlarged schematic view at A in the [Chinese text];

[0023] Figure 5 Schematic diagram of the crosstalk intensity of multiple signal lines of the signal transmission component provided by the embodiment of the present application;

[0024] Figure 6 Schematic diagram of the structure of the signal transmission component in the related art.

[0025] Among them, the reference numerals in the figures are as follows:

[0026] 100, signal transmission component; 10, first circuit board; 11, circuit element; 20, second circuit board; 21, overlapping part; 211, first section; 212, second section; 22, signal line group; 23, base layer,

[0027] 200, touch panel. Detailed implementation manners

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0032] Next, refer to Figure 1 , Figure 2 and Figure 3A description is given of the signal transmission component 100 provided in the embodiments of the present application.

[0033] The signal transmission component 100 includes a first circuit board 10 and a second circuit board 20. The second circuit board 20 is partially stacked with the first circuit board 10. A signal line group 22 is provided on the second circuit board 20. The signal line group 22 includes a plurality of signal lines arranged in parallel. The signal line group 22 has an overlapping portion 21 that is stacked with the first circuit board 10. The extending direction of the overlapping portion 21 is obliquely intersecting with the extending direction of the first circuit board 10, that is, the included angle between the extending direction of the overlapping portion 21 and the extending direction of the first circuit board 10 is an obtuse angle or an acute angle.

[0034] As Figure 1 、 Figure 2 and Figure 3 shown, a part of the second circuit board 20 is arranged in parallel and spaced apart from the first circuit board 10, and at least a part of the second circuit board 20 overlaps with the first circuit board 10 in the y direction in the figure. A signal line group 22 is provided on the second circuit board 20. At least a part of the signal line group 22 overlaps with the first circuit board 10 in the y direction in the figure. The overlapping portion 21 is formed by the part where the plurality of signal lines overlap with the first circuit board 10 in the y direction in the figure.

[0035] The extending direction of the first circuit board 10 is the length direction of the first circuit board 10. Taking Figure 1 as an example, the extending direction of the first circuit board 10 is the length direction X of the first circuit board 10. The first circuit board 10 also has a width direction z and a thickness direction y.

[0036] The first circuit board 10 includes a printed circuit and a plurality of circuit elements 11. The plurality of circuit elements 11 can be one or more of chips, capacitors, and resistors. The arrangement direction of the printed circuit and the plurality of circuit elements 11 is usually the length direction or the width direction of the first circuit board 10. It can be understood that the internal circuit is formed inside the circuit element 11, and the arrangement direction of the circuit element 11 can be the extending direction of the internal circuit of the circuit element 11 or the direction of the electric field generated after the circuit element 11 is powered on.

[0037] When the first circuit board 10 works, the printed circuit and the plurality of circuit elements 11 on the first circuit board 10 are powered on to form a fluctuating electric field along the extending direction of the first circuit board 10, thereby exciting crosstalk currents in the signal lines on the second circuit board 20. When signals are transmitted in the signal line group 22 on the second circuit board 20, noise is generated in the signals transmitted in the signal line group 22.

[0038] The overlapping portion 21 intersects obliquely with the extending direction of the first circuit board 10, which can effectively reduce the noise signals generated by the overlapping portion 21 under the influence of the first circuit board 10, thereby reducing the influence of the first circuit board 10 on the signals transmitted by the signal line group 22 in the second circuit board 20.

[0039] The beneficial effects of the signal transmission component 100 provided by the present application are as follows: Compared with the Figure 6 prior art shown, in the signal transmission component 100 provided by the present application, the extending direction of the overlapping portion between the second circuit board 20 and the first circuit board 10 forms an angle with the arranging direction of the circuit elements 11 and / or the extending direction of the printed circuit in the first circuit board 10, thereby improving the isolation degree between the magnetic field generated by the first circuit board 10 and the second circuit board 20, reducing the signal crosstalk between the first circuit board 10 and the second circuit board 20, and thus making the signal transmission component 100 provided by the present application have the advantage of lower internal crosstalk.

[0040] In some embodiments provided by the present application, the first circuit board 10 includes a plurality of circuit elements 11, the overlapping portion 21 is stacked with the circuit elements 11, and the extending direction of the overlapping portion 21 is obliquely intersecting with the arranging direction of the circuit elements 11.

[0041] As Figure 1 and Figure 2 shown, the arranging direction of the circuit elements 11 extends along the x direction and / or the z direction in the figure, that is, the electric field generated after the circuit elements 11 are powered on extends along the x direction or the z direction in the figure, and the extending direction of the overlapping portion 21 forms an acute angle or an obtuse angle with both the x direction and the z direction in the figure.

[0042] Thus, when a plurality of circuit elements 11 on the first circuit board 10 are powered on and working, the extending directions of the plurality of signal lines in the overlapping portion 21 intersect with the electric field directions generated by the plurality of circuit elements 11, thereby improving the isolation degree between the plurality of signal lines in the overlapping portion 21 and the circuit elements 11, and reducing the amplitude of the noise generated by the coupling of the signal lines with the circuit elements 11.

[0043] In some embodiments provided by the present application, the overlapping portion 21 includes a first segment 211 and a second segment 212 connected to each other, and the extending direction of the first segment 211 intersects with the extending direction of the second segment 212.

[0044] As Figure 1 shown, the first segment 211 and the second segment 212 are connected, and the first segment 211 is connected between the second segment 212 and the first circuit board 10. Both the first segment 211 and the second segment 212 extend in a straight line direction, and a part of the signal line group 22 forms the first segment 211, and another part of the signal line group 22 forms the second segment 212. Some of the signal line groups 22 in the first segment 211 are connected between some of the signal line groups 22 in the second segment 212 and the first circuit board 10.

[0045] It should be noted that the extension direction of the first section 211 is the extension direction of the signal lines within the first section 211, and the extension direction of the second section 212 is the extension direction of the signal lines within the second section 212. The extension direction of the first section 211 intersects with the extension direction of the second section 212, that is, the extension direction of the signal line group 22 within the first section 211 intersects with the extension direction of the signal line group 22 within the second section 212.

[0046] Thus, the overlapping portion 21 bends and extends to reduce the size of the overlapping portion 21 in the x direction in the figure, and causes one side of the first circuit board 10 along the y direction in the figure to cross the first circuit board 10 along the z direction in the figure, making the signal transmission component 100 provided in the present application have the advantage of being able to be used in a narrow space.

[0047] In some embodiments provided in the present application, the included angle between the extension direction of the overlapping portion 21 and the arrangement direction of the circuit elements 11 is 45°.

[0048] As Figure 1 shown, the extension direction of the overlapping portion 21 is the extension direction of the signal line group 22 within the overlapping portion 21. The arrangement direction of the circuit elements 11 includes the first direction x shown in the figure and the second direction z shown in the figure that are orthogonal to each other. The extension direction of the first section 211 forms an angle of 45° with the x direction shown in the figure, and the extension direction of the second section 212 forms an angle of 45° with the z direction shown in the figure.

[0049] The extension direction of the signal line group 22 within the overlapping portion 21 forms an angle of 45° with both the first direction in which the circuit elements 11 are arranged and the second direction in which the circuit elements 11 are arranged, so that the signal line group 22 within the overlapping portion 21 forms an angle of at least 45° with the direction of the electric field generated by the circuit elements 11 arranged in any direction.

[0050] As Figure 5 shown, Figure 5 the horizontal axis in Figure 5 is signal lines with different numbers, Figure 5 the vertical axis in Figure 5 is the intensity of the noise signals generated in the signal lines.

[0051] The extension direction of the first section 211 is orthogonal to the extension direction of the second section 212.

[0052] As Figure 1As shown, the extending direction of the first section 211 is orthogonal to that of the second section 212, so that the extending direction at any position of the signal line group 22 has an angle of 45° with the arranging direction of the circuit elements 11 on the first circuit board 10, improving the shielding effect between the signal line group 22 and the multiple circuit elements 11 on the first circuit board 10, and enabling the signal transmission component 100 provided by the present application to have the advantage of low internal crosstalk.

[0053] In some embodiments provided by the present application, the overlapping portion 21 includes a plurality of first sections 211 and a plurality of second sections 212 (not shown in the figure), and the plurality of first sections 211 and the plurality of second sections 212 are alternately connected.

[0054] The overlapping portion 21 includes a plurality of alternately connected first sections 211 and second sections 212, and the extending direction of any one of the first sections 211 is orthogonal to that of any one of the second sections 212, causing the overlapping portion 21 to extend along a zigzag path.

[0055] Thus, on the one hand, the extending direction of the signal line group 22 in the overlapping portion 21 has an angle with the arranging direction of the circuit elements 11 on the first circuit board 10 at any position, improving the isolation degree between the signal line group 22 and the circuit elements 11 on the first circuit board 10, and enabling the signal transmission component 100 provided by the present application to have the advantage of low internal crosstalk. On the other hand, the size of the overlapping portion 21 in the x direction in the figure can be reduced, enabling the signal transmission component 100 provided by the present application to have the advantage of being deployable in a narrow space inside electronic products such as laptop computers.

[0056] In some embodiments provided by the present application, the second circuit board 20 is a flexible circuit board. One end of the second circuit board 20 is connected to the first circuit board 10, and the second circuit board 20 extends around the end of the first circuit board 10.

[0057] As Figure 3 and Figure 4 shown, the second circuit board 20 is bendable. One end of the second circuit board 20 is connected to one side of the first circuit board 10, and the second circuit board 20 bends around the end of the first circuit board 10 to the other side of the first circuit board 10, so that the second circuit board 20 straddles the first circuit board 10 on one side in the thickness direction y of the first circuit board 10 and extends to one side in the width direction z of the first circuit board 10. At least a part of the overlapping portion 21 is located on the side of the second circuit board 20 facing the direction in the figure of the first circuit board 10 to reduce the crosstalk of the first circuit board 10 to the second circuit board 20.

[0058] In some embodiments provided by the present application, the second circuit board 20 further includes a base layer 23, and the signal line group 22 is disposed on the surface of the base layer 23 facing away from the first circuit board 10.

[0059] The material of the base layer 23 is at least one of polyimide film (PI), polyimide film coated with copper foil (FCCL), and polyimide microporous film (AIP). The base layer 23 is an insulating material so that the base layer 23 has good shielding performance, such as Figure 4 As shown, the signal line group 22 of the second circuit board 20 is processed on the surface of the base layer 23 by printing, and the base layer 23 is arranged between the signal line group 22 and the first circuit board 10 .

[0060] Therefore, the base layer 23 is used to isolate the signal line group 22 from the first circuit board 10, so as to weaken the intensity of the electric field generated by the circuit elements 11 on the first circuit board 10 on the side of the base layer 23 away from the first circuit board 10, thereby further reducing the crosstalk of the first circuit board 10 to the signal line group 22, so that the signal transmission component 100 provided in the present application has the advantage of lower internal crosstalk.

[0061] In some embodiments provided in the present application, the base layer 23 has a set thickness so that the distance between the surface of the base layer 23 facing away from the first circuit board 10 and the surface of the base layer 23 facing the first circuit board 10 is greater than a set threshold.

[0062] like Figure 4 As shown, the base layer 23 is a film-like structure with a certain thickness. The base layer 23 has a first surface and a second surface arranged relatively to each other. The signal line group 22 is provided on the first surface, and the second surface is located on the side of the base layer 23 facing the first circuit board 10. The spacing dimension between the first surface and the second surface is the thickness dimension of the base layer 23.

[0063] Therefore, the base layer 23 has a set thickness, which, on the one hand, can increase the difficulty of the electric field generated by the circuit elements 11 on the first circuit board 10 to pass through the base layer 23, further weaken the strength of the electric field generated by the circuit elements 11 on the first circuit board 10 on the side of the base layer 23 away from the first circuit board 10, and reduce the crosstalk of the first circuit board 10 to the signal line group 22. On the other hand, it increases the distance between the signal line group 22 and the first circuit board 10, thereby weakening the strength of the electric field generated by the circuit elements 11 on the first circuit board 10 on the side of the base layer 23 away from the first circuit board 10, and reducing the crosstalk of the first circuit board 10 to the signal line group 22, so that the signal transmission component 100 provided in the present application has the advantage of lower internal crosstalk.

[0064] Combine the following Figures 1 to 4 The electronic device provided in the present application is described. The electronic device may be a notebook computer, a display screen, etc.

[0065] The electronic device provided in the present application includes a touch panel 200 and a signal transmission component 100 . The signal transmission component 100 is the signal transmission component 100 in any of the above embodiments. The first circuit board 10 is electrically connected to the touch panel 200 .

[0066] In some embodiments, the first circuit board 10 is a timing control circuit board, and the second circuit board 20 is a flexible circuit board for connecting a touch sensor in the touch panel 200 .

[0067] As shown in the figure, the signal transmission component 100 provided in the present application can be used in an electronic device to connect a touch panel 200 and a control component. The first circuit board 10 of the signal transmission component 100 is a driving board of the touch panel 200, and the second circuit board 20 of the signal transmission component 100 is a touch signal line to transmit the touch signal from the touch panel 200 to the control component through the signal transmission component 100.

[0068] In some embodiments, the electronic device provided in the present application may further include a control component, which may be a central processor that obtains touch instructions based on touch signals from the display panel, so as to control the touch panel 200 through the control component and process the touch signals obtained by the touch panel 200 through the control component.

[0069] The beneficial effect of the electronic device provided by the present application is that compared with the prior art, the crosstalk between the first circuit board 10 and the second circuit board 20 of the signal transmission component 100 of the electronic device provided by the present application is lower, which, on the one hand, avoids the interference of the first circuit board 10 with the touch signal transmitted in the second circuit board 20 when the electronic device provided by the present application is working, thereby reducing abnormal faults of false alarm points of the touch panel 200.

[0070] In addition, in order to make the electronic device provided by the present application have the advantages of miniaturization and portability, the internal equipment of the electronic device is compact and the internal space is small. The isolation between the first circuit board 10 and the second circuit board 20 of the signal transmission component 100 provided by the present application is relatively high, so that the signal transmission component 100 provided by the present application can still reduce the crosstalk between the first circuit board 10 and the second circuit board 20 when working in the small space inside the electronic device, thereby reducing the failure rate of the electronic device provided by the present application and avoiding affecting the user experience.

[0071] In some embodiments provided in the present application, the second circuit board 20 is located on a side of the first circuit board 10 facing away from the touch panel 200 .

[0072] like Figure 1 and Figure 2 As shown, a signal line group 22 is provided in the second circuit board 20, and the signal line group 22 has multiple signal lines arranged in parallel. When the second circuit board 20 transmits signals, an electric field is generated by the multiple signal lines. The first circuit board 10 is located between part of the second circuit board 20 and the touch panel 200.

[0073] Thus, by disposing the first circuit board 10 between the second circuit board 20 and the touch panel 200, the first circuit board 10 is pasted on the back of the touch panel 200, and the second circuit board 20 is fixed on the touch panel 200 through the first circuit board 10. On the one hand, the bending radius of the second circuit board 20 is increased, and the risk of damage to the second circuit board 20 is reduced. On the other hand, the first circuit board 10 is isolated between the second circuit board 20 and the touch panel 200 to block the electric field generated by the second circuit board 20 through the first circuit board 10, weakening the mutual influence effect between the second circuit board 20 and the touch panel 200, thereby improving the display effect of the electronic device provided by the present application.

[0074] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A signal transmission component, characterized in that: include: a first circuit board; A second circuit board is partially stacked with the first circuit board. A signal line group is provided on the second circuit board. The signal line group includes a plurality of signal lines arranged in parallel. The signal line group has an overlapping portion stacked with the first circuit board. An extension direction of the overlapping portion is oblique to an extension direction of the first circuit board.

2. The signal transmission component according to claim 1, characterized in that: The first circuit board includes a plurality of circuit elements, the overlapping portion is stacked with the circuit elements, and an extending direction of the overlapping portion is oblique to an arrangement direction of the circuit elements.

3. The signal transmission component according to claim 2, characterized in that: The overlapping portion includes a first segment and a second segment connected to each other, and an extending direction of the first segment intersects with an extending direction of the second segment.

4. The signal transmission component according to claim 3, characterized in that: The angle between the first section and the arrangement direction of the circuit element is 45°; the angle between the second section and the arrangement direction of the circuit element is 45°; An extending direction of the first segment is orthogonal to an extending direction of the second segment.

5. The signal transmission component according to claim 3, characterized in that: The overlapping portion includes a plurality of the first segments and a plurality of the second segments, and the plurality of the first segments and the plurality of the second segments are alternately connected.

6. The signal transmission component according to any one of claims 1 to 5, characterized in that: The second circuit board is a flexible circuit board, one end of the second circuit board is connected to the first circuit board, and the second circuit board extends around the end of the first circuit board.

7. The signal transmission component according to claim 6, characterized in that: The second circuit board further includes a base layer, and the signal line group is arranged on a surface of the base layer facing away from the first circuit board.

8. The signal transmission component according to claim 7, characterized in that: The base layer has a set thickness so that a distance between the signal line group and the first circuit board is greater than a set threshold.

9. An electronic device, characterized in that: It comprises a touch panel and a signal transmission component, wherein the signal transmission component is the signal transmission component according to any one of claims 1 to 8, and the first circuit board and the second circuit board are electrically connected to the touch panel respectively.

10. The electronic device according to claim 9, characterized in that: The second circuit board is located on a side of the first circuit board away from the touch panel.

Images