Flat cable connecting structure applied to capacitive touch screen
A detachable connection structure for touch control and display modules in smartphones addresses the high maintenance costs of integrated designs by enabling separate replacement and maintenance, thereby reducing overall repair expenses.
Patent Information
- Application Number
- CN202422019656.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-19
AI Technical Summary
In the prior art, the display module and touch module of Apple mobile phones are integrated design, which requires the overall display screen to be replaced when the touch module is damaged, which is very cost-effective.
The detachable connection structure of the touch module and the display module is adopted, and the electrical connection is realized through the FPC, allowing for separate maintenance and replacement of the module.
The split design of touch module and display module is realized, reducing maintenance costs.
Smart Images
Figure CN223108347U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of touch screens, and particularly relates to a flexible printed circuit (FPC) connection structure. Background Art
[0002] The original display screens of existing mobile phones, especially those of Apple mobile phones, include a display module and a touch module, which are integrated as a whole. When the touch module is damaged, the entire display screen needs to be replaced, resulting in a high repair cost for the display screen.
[0003] Therefore, there is an urgent need for a structure in which the display module and the touch module are separately arranged. Summary of the Invention
[0004] In order to solve the above problems, the purpose of the utility model is to provide an FPC connection structure applied to a capacitive touch screen, which can realize the separate replacement of both the display module and the touch module, and there is no need to replace the entire display screen when the display module or the touch module is damaged.
[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows.
[0006] An FPC connection structure applied to a capacitive touch screen, characterized in that it includes a touch module, a display module, and an FPC. The touch module and the display module are detachably connected, and the touch module and the display module are electrically connected through the FPC.
[0007] In the utility model, by detachably connecting the touch module and the display module, a separate design of the touch module and the display module can be realized. When the touch module or the display module is damaged, it can be separately repaired and replaced without overall replacement, thereby reducing the repair cost.
[0008] Further, the touch module includes a substrate, an induction circuit layer, and a driving circuit layer. The induction circuit layer and the driving circuit layer are respectively arranged on the upper surface and the lower surface of the substrate. The driving circuit layer includes a plurality of driving conductive wires. The substrate, the induction circuit layer, and the driving circuit layer together form the touch module, providing basic support for the realization of the touch function.
[0009] Further, the driving conductive wire includes a driving conductive wire main body. The driving conductive wire main body is used to participate in the transmission of signals during the induction process.
[0010] Further, a plurality of output contacts are arranged on the substrate. The induction circuit layer includes a plurality of induction conductive wires. Both ends of each induction conductive wire and each driving conductive wire are electrically connected to the corresponding output contacts. Preferably, the driving conductive wire main body of each driving conductive wire is electrically connected to the output contacts.
[0011] Further, the induction conductive wire and the driving conductive wire are arranged in a cross shape, and the induction conductive wire and the driving conductive wire cooperate to form a plurality of touch induction units. The above structural design belongs to the prior art and is the same as the touch structure setting form of the existing capacitive touch screen. A certain range around each cross-shaped node is a touch induction unit. Usually, the touch induction unit is a quadrilateral with a side length of about 5 mm centered on the cross-shaped node.
[0012] Further, the induction circuit layer is an ITO induction circuit, the driving circuit layer is an ITO driving circuit, and the substrate is a COP film substrate; the flexible cable connection structure further includes a glass cover plate and a glass bottom plate. The glass cover plate is bonded to the induction circuit layer through an OCA optical adhesive, and the glass bottom plate covers the driving circuit layer.
[0013] Further, the detachable connection method between the display module and the touch module is the prior art, as long as the display module and the touch module can be separated. Preferably, the display module can be connected to the glass bottom plate by gluing.
[0014] Further, the display module includes a display screen main body and a display circuit. The display screen main body and the display circuit are electrically connected. The display circuit includes a plurality of input contacts, and the input contacts and the output contacts are electrically connected. Through the electrical connection between the input contacts and the output contacts, data exchange between the touch module and the display module can be realized.
[0015] Further, the display module is provided with notches for exposing the input contacts at multiple input contact positions. Since the touch module and the display module in the prior art are an integrated structure, the line connections between the touch module and the display module are also non-exposed, and there is no need to set exposed input contacts. In this application, the touch module and the display module are set to be detachably connected. In order to better realize the assembly and processing of the touch module and the display module and normal electrical connection, notches need to be set at the positions corresponding to the input contacts.
[0016] Further, the FPC includes a first pin group, a connecting wire, and a second pin group. The first pin group and the second pin group are electrically connected through the connecting wire. The first pin group is electrically connected to the output contacts and corresponds one by one, and the second pin group is electrically connected to the input contacts and corresponds one by one. Through the above connection structure, by defining the first pin group and the second pin group, the binding between the multiple output contacts on the multiple touch modules and the multiple input contacts on the display module is realized, which is also the key structure for realizing the interaction between the touch module and the display module, and the structure is simple and easy to implement.
[0017] The beneficial effects of the present utility model are as follows. Compared with the prior art, by detachably connecting the touch control module and the display module, the present utility model can achieve a split design of the touch control module and the display module. When the touch control module or the display module is damaged, it can be repaired and replaced separately without the need for overall replacement, thereby reducing the maintenance cost. Description of the Drawings
[0018] Figure 1 is a schematic structural diagram of the combination of the base material, the induction circuit layer and the driving circuit layer of the present utility model.
[0019] Figure 2 is Figure 1 the partial enlarged view at A in
[0020] Figure 3 is a schematic structural diagram of the combination of the base material and the induction circuit layer of the present utility model.
[0021] Figure 4 is a schematic structural diagram of the combination of the base material and the driving circuit layer of the present utility model.
[0022] Figure 5 is Figure 4 the partial enlarged view at B in
[0023] Figure 6 is a schematic structural diagram of a part of the driving conductive wires of the present utility model, corresponding to one induction unit.
[0024] Figure 7 is a schematic structural diagram of the combination of the display module and the touch control module of the present utility model.
[0025] Figure 8 is Figure 7 the partial enlarged view at the bottom circle in Detailed Embodiments
[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model 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 utility model and are not used to limit the present utility model.
[0027] Referring to Figures 1-8 , this embodiment provides a flexible printed circuit (FPC) connection structure applied to a capacitive touch screen, including a touch control module 1, a display module 2 and an FPC 3. The touch control module 1 and the display module 2 are detachably connected, and the touch control module 1 and the display module 2 are electrically connected through the FPC 3.
[0028] In the present utility model, by detachably connecting the touch control module 1 and the display module 2, a split design of the touch control module 1 and the display module 2 can be realized. When the touch control module 1 or the display module 2 is damaged, it can be repaired and replaced separately without the need for overall replacement, thereby reducing the maintenance cost.
[0029] In this embodiment, the touch control module 1 includes a substrate 11, a sensing circuit layer 12, and a driving circuit layer 13. The sensing circuit layer 12 and the driving circuit layer 13 are respectively disposed on the upper surface and the lower surface of the substrate 11. The driving circuit layer 13 includes a plurality of driving conductive wires 131. The substrate 11, the sensing circuit layer 12, and the driving circuit layer 13 together form the touch control module, providing basic support for the realization of the touch control function.
[0030] In this embodiment, the driving conductive wire 131 includes a driving conductive wire main body 1311. The driving conductive wire main body 1311 is used to participate in the transmission of signals during the sensing process.
[0031] In this embodiment, a plurality of output contacts 111 are provided on the substrate 11. The sensing circuit layer 12 includes a plurality of sensing conductive wires 121. Both ends of each sensing conductive wire 121 and each driving conductive wire 131 are electrically connected to the corresponding output contacts 111. Preferably, the driving conductive wire main body 1311 of each driving conductive wire 131 is electrically connected to the output contacts 111.
[0032] In this embodiment, the sensing conductive wires 121 and the driving conductive wires 131 are arranged in a cross-cross manner, and the sensing conductive wires 121 and the driving conductive wires 131 cooperate to form a plurality of touch sensing units. The above structural design belongs to the prior art and is the same as the touch structure setting form of the existing capacitive touch screen. A certain range around each cross-cross node is a touch sensing unit. Usually, the touch sensing unit is a quadrilateral with a side length of about 5 mm centered on the cross-cross node.
[0033] In this embodiment, the sensing circuit layer 12 is an ITO sensing circuit, the driving circuit layer 13 is an ITO driving circuit, and the substrate 11 is a COP film substrate; the flexible cable connection structure further includes a glass cover plate and a glass bottom plate. The glass cover plate is bonded to the sensing circuit layer 12 through an OCA optical adhesive, and the glass bottom plate covers the driving circuit layer 13.
[0034] In this embodiment, the detachable connection method between the display module 2 and the touch control module 1 is the prior art, as long as the display module 2 and the touch control module 1 can be separated. Preferably, the display module 2 can be connected to the glass bottom plate by an adhesive method.
[0035] In this embodiment, the display module 2 includes a display screen body 21 and a display circuit 22. The display screen body 21 and the display circuit 22 are electrically connected. The display circuit 22 includes a plurality of input contacts 221, and the input contacts 221 are electrically connected to the output contacts 111. Through the electrical connection between the input contacts 221 and the output contacts 111, data exchange between the touch control module 1 and the display module 2 can be realized.
[0036] In this embodiment, the display module 2 is provided with a notch 4 at a position where the plurality of input contacts 221 are located to expose the input contacts 221. Since the touch control module 1 and the display module 2 in the prior art are of an integrated structure, the line connections between the touch control module and the display module 2 are also non-exposed, and there is no need to provide exposed input contacts 221. The touch control module 1 and the display module 2 in this application are set to be detachably connected. In order to better realize the assembly and processing of the touch control module 1 and the display module 2 and normal electrical connection, a notch 4 needs to be provided at the position corresponding to the input contacts 221.
[0037] In this embodiment, the FPC 3 includes a first pin group 31, a connection line 32, and a second pin group 33. The first pin group 31 and the second pin group 33 are electrically connected through the connection line 32. The first pin group 31 is electrically connected to the output contacts 111 and corresponds one by one, and the second pin group 33 is electrically connected to the input contacts 221 and corresponds one by one. With the above connection structure, by defining the first pin group 31 and the second pin group 33, the binding between the plurality of output contacts 111 on the plurality of touch control modules 1 and the plurality of input contacts 221 on the display module 2 is realized. This is also the key structure for realizing the interaction between the touch control module 1 and the display module 2, and the structure is simple and easy to implement.
[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A flexible cable connection structure applied to a capacitive touch screen, characterized in that, It includes a touch control module, a display module and an FPC. The touch control module and the display module are detachably connected, and the touch control module and the display module are electrically connected through the FPC.
2. The flexible cable connection structure applied to a capacitive touch screen according to claim 1, characterized in that, The touch control module includes a substrate, a sensing circuit layer and a driving circuit layer. The sensing circuit layer and the driving circuit layer are respectively arranged on the upper surface and the lower surface of the substrate, and the driving circuit layer includes a plurality of driving conductive wires.
3. The flexible cable connection structure applied to a capacitive touch screen according to claim 2, wherein, A plurality of output contacts are arranged on the substrate. The sensing circuit layer includes a plurality of sensing conductive wires. Both ends of each sensing conductive wire and each driving conductive wire are electrically connected to the corresponding output contacts.
4. The flexible cable connection structure applied to a capacitive touch screen according to claim 3, characterized in that, The sensing conductive wires and the driving conductive wires are arranged in a cross-cross manner, and the sensing conductive wires and the driving conductive wires cooperate to form a plurality of touch sensing units.
5. The flexible cable connection structure applied to a capacitive touch screen according to claim 4, characterized in that, The sensing circuit layer is an ITO sensing circuit, the driving circuit layer is an ITO driving circuit, and the substrate is a COP film substrate; the flexible cable connection structure further includes a glass cover plate and a glass bottom plate. The glass cover plate is bonded to the sensing circuit layer through OCA optical adhesive, and the glass bottom plate covers under the driving circuit layer.
6. The flexible cable connection structure applied to a capacitive touch screen according to claim 3, wherein, The display module includes a display screen main body and a display circuit. The display screen main body and the display circuit are electrically connected. The display circuit includes a plurality of input contacts, and the input contacts and the output contacts are electrically connected.
7. The flexible cable connection structure applied to a capacitive touch screen according to claim 6, characterized in that, The display module is provided with notches for exposing the input contacts at positions of the plurality of input contacts.
8. The flexible cable connection structure applied to a capacitive touch screen according to claim 6, wherein, The FPC includes a first pin group, a connecting wire and a second pin group. The first pin group and the second pin group are electrically connected through the connecting wire. The first pin group is electrically connected to the output contacts and corresponds one by one, and the second pin group is electrically connected to the input contacts and corresponds one by one.