Capacitive touch screen function sheet
By setting an adjustment part on the driving conductive wire of the touch module to adjust the impedance of the conductive wire, the problems of high maintenance costs and poor adaptability caused by the overall design of the display module and the touch module in the prior art are solved, and flexible matching and independent replacement of the display module and the touch module are realized.
Patent Information
- Application Number
- CN202422019641.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The display module and touch module of existing mobile phone display screens are designed as a whole, which results in the need to replace the entire display screen when the touch module is damaged, which increases the maintenance cost and cannot flexibly adapt to different models of display modules.
By setting an adjustment part on the driving conductive wire of the touch module, the impedance of the conductive wire is adjusted, so that the touch module can be adapted to the display module chips of different models, thereby realizing the split configuration of the display module and the touch module, allowing each to replace independently.
It realizes flexible matching and independent replacement of display modules and touch modules, reduces maintenance costs, and is adapted to different models of mobile phones.
Smart Images
Figure CN222965665U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of touch screens, and particularly relates to a touch screen structure. Background Art
[0002] The original display screens of existing mobile phones, especially the original display screens of Apple mobile phones, include a display module and a touch control module, and the display module and the touch control module are integrated as a whole. When the touch control module is damaged, the entire display screen needs to be replaced, resulting in a relatively high repair cost of the display screen.
[0003] In addition, since the display module and the touch control module of the existing display screen are integrated, it is impossible to adapt different display modules by changing the design of the touch control module. Therefore, the display module and the touch control module cannot be flexibly matched. Or rather, even if the display module and the touch control module are forcibly disassembled, due to the structural design of the touch control module itself, it is necessary to completely redesigned the touch control module to adapt different display modules, and it is impossible to achieve adaptation to different display modules by modifying part of the structure of the touch control module. Summary of the Utility Model
[0004] In order to solve the above problems, the purpose of the utility model is to provide a capacitive touch screen functional sheet, and the structural setting can adapt the touch control module to different display modules by adjusting part of the structure of the touch control module.
[0005] Another purpose of the utility model is to provide a capacitive touch screen functional sheet, which can realize the separate replacement of both the display module and the touch control module, and there is no need to replace the entire display screen when the display module or the touch control module is damaged.
[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows.
[0007] A capacitive touch screen functional sheet includes a touch control module, and the touch control module includes a base material, 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 base material. It is characterized in that the driving circuit layer includes a plurality of driving conductive wires, and at least one driving conductive wire is provided with an adjusting part for adjusting the impedance of the driving conductive wire.
[0008] In the utility model, the base material, the induction circuit layer and the driving circuit layer jointly form the touch control module, providing basic support for the realization of the touch control function. On this basis, by arranging an adjusting part for adjusting the impedance of the driving conductive wire on the driving conductive wire, the touch control module can be adapted to display module chips of different models, and then adapted to mobile phones of different models. This provides a basis for the separate setting of the display module and the touch control module, enables the display module and the touch control module to be flexibly matched, and can be flexibly replaced when the display module or the touch control module is damaged, without replacing all of them.
[0009] Furthermore, the adjusting portion is an etching layer etched on the driving conductive wire. The driving conductive wire includes a driving conductive wire main body and the etching layer, and the etching layer is insulated from the driving conductive wire main body. Specifically, when implementing the adjusting portion, an etching layer is etched on the wire, so that only the driving conductive wire main body part of the complete driving conductive wire participates in the signal transmission during the induction process, thereby realizing the adjustment of the impedance of the driving conductive wire, and further enabling the touch control module to adapt to different models of display screen chips, and then adapting to different models of mobile phones.
[0010] Furthermore, the driving conductive wire main body is in an "I" shape. The "I" shape design can better realize the connection between driving conductive wires, and it is convenient to set the capacitance value of the capacitance structure composed of the induction circuit layer and the driving circuit layer within a suitable range, adapt to the software of the display module IC itself, and the impedance is also convenient to adjust. Preferably, the etching layer is set in a regular and symmetrical shape, such as rectangles regularly distributed at equal intervals, and the corresponding driving conductive wire main body is also in a regular and symmetrical shape, which can be more conducive to the realization of the induction function and facilitate the design of the induction algorithm formula and other parts of the software.
[0011] Furthermore, adjusting portions for adjusting the impedance of the driving conductive wires are provided on all the driving conductive wires. Providing adjusting portions for adjusting the impedance of the driving conductive wires on all the driving conductive wires is a preferred solution, which can ensure the parameter consistency of each induction unit composed of the induction circuit layer and the driving circuit layer, and facilitate the realization of the touch control function of the touch control module.
[0012] Furthermore, a plurality of output contacts are provided on the base material. The induction circuit layer includes several induction conductive wires, and 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.
[0013] Furthermore, the induction conductive wires and the driving conductive wires are arranged in a cross-cross pattern, and the induction conductive wires and the driving conductive wires 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-cross node is a touch induction unit. Usually, the touch induction unit is a quadrilateral centered on the cross-cross node with a side length of about 5 mm.
[0014] Furthermore, the driving conductive wire main body of the driving conductive wire in each touch unit is in an "I" shape.
[0015] Further, 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 functional sheet further includes a glass cover plate and a glass bottom plate, the glass cover plate is bonded to the sensing circuit layer through an OCA optical adhesive, and the glass bottom plate covers under the driving circuit layer.
[0016] Further, the functional sheet further includes a display module, and the display module and the touch control module are detachably connected. The detachable connection method is a prior art, as long as the display module and the touch control module can be separated. Preferably, the display module can be connected to the glass bottom plate by an adhesive method.
[0017] 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 control module and the display module can be realized.
[0018] Further, the display module is provided with notches for exposing the input contacts at partial positions of the plurality of input contact positions. Since the touch control module and the display module in the prior art are of an integral structure, the circuit connections between the touch control module and the display module are all non-exposed, and there is no need to provide exposed input contacts. In the present application, the touch control module and the display module are set to be detachably connected. In order to better realize the assembly and processing of the touch control module and the display module and normal electrical connection, notches need to be provided at positions corresponding to the input contacts.
[0019] Further, the functional sheet further includes an FPC, 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 plurality of output contacts on the plurality of touch control modules and the plurality of input contacts on the display module is realized, which is also the key structure for realizing the interaction between the touch control module and the display module, and the structure is simple and easy to implement.
[0020] The beneficial effect of the present utility model is that, compared with the prior art, the substrate, the sensing circuit layer and the driving circuit layer of the present utility model jointly form a touch control module, providing basic support for the realization of the touch control function. On this basis, by providing an adjusting portion for adjusting the impedance of the driving conductive wire on the driving conductive wire, the touch control module can be adapted to display module chips of different models, and then adapted to mobile phones of different models. This provides a basis for the split setting of the display module and the touch control module, enabling the display module and the touch control module to be flexibly matched and replaced flexibly after the display module or the touch control module is damaged, without replacing all of them. Brief Description of the Drawings
[0021] Figure 1 is a schematic structural diagram of the combination of the base material, induction circuit layer and driving circuit layer of the present utility model.
[0022] Figure 2 is Figure 1 a partial enlarged view of part A in
[0023] Figure 3 is a schematic structural diagram of the combination of the base material and induction circuit layer of the present utility model.
[0024] Figure 4 is a schematic structural diagram of the combination of the base material and driving circuit layer of the present utility model.
[0025] Figure 5 is Figure 4 a partial enlarged view of part B in
[0026] Figure 6 is a schematic structural diagram of part of the driving conductive wires of the present utility model, corresponding to one induction unit.
[0027] Figure 7 is a schematic structural diagram of the combination of the display module and touch control module of the present utility model.
[0028] Figure 8 is Figure 7 a partial enlarged view of part B in Detailed Description of the Preferred Embodiments
[0029] In order to make the objectives, technical solutions and advantages of the present utility model more comprehensible, 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 intended to limit the present utility model.
[0030] Refer to Figures 1-8 , this embodiment provides a capacitive touch screen functional sheet, including a touch control module 1. The touch control module 1 includes a base material 11, an induction circuit layer 12 and a driving circuit layer 13. The induction circuit layer 12 and the driving circuit layer 13 are respectively disposed on the upper surface and the lower surface of the base material 11. It is characterized in that the driving circuit layer 13 includes a plurality of driving conductive wires 131, and an adjusting portion 1311 for adjusting the impedance of the driving conductive wire 131 is provided on at least one driving conductive wire 131.
[0031] In the present utility model, a substrate 11, an induction circuit layer 12, and a driving circuit layer 13 together form a touch control module 1, providing basic support for the realization of the touch control function. On this basis, by providing an adjustment part 1311 for adjusting the impedance of the driving conductive wire 131 on the driving conductive wire 131, the touch control module 1 can be adapted to display module 2 chips of different models, and further adapted to mobile phones of different models. This provides a basis for the split setting of the display module 2 and the touch control module 1, enabling the display module 2 and the touch control module 1 to be flexibly matched and replaced flexibly after the display module 2 or the touch control module 1 is damaged, without the need for full replacement.
[0032] In this embodiment, the adjustment part 1311 is an etched layer etched on the driving conductive wire 131. The driving conductive wire 131 includes a driving conductive wire main body 1312 and the etched layer, and the etched layer is insulated from the driving conductive wire main body 1312. Specifically, when implementing the adjustment part 1311, an etched layer is etched on the driving conductive wire 131, so that only the driving conductive wire main body 1312 part of the complete driving conductive wire 131 participates in the signal transmission during the induction process, thereby realizing the adjustment of the impedance of the driving conductive wire 131, and further enabling the touch control module 1 to be adapted to display screen chips of different models, and further adapted to mobile phones of different models.
[0033] In this embodiment, the driving conductive wire main body 1312 is in an "I" shape. The "I" shape design can better realize the connection between the driving conductive wires 131, and is convenient for setting the capacitance value of the capacitance structure composed of the induction circuit layer 12 and the driving circuit layer 13 within a suitable range, adapting to the software of the display module 2 IC itself, and the impedance is also convenient to adjust. Preferably, the etched layer is set in a regular and symmetrical shape, such as rectangles regularly distributed at equal intervals, and the corresponding driving conductive wire main body is also in a regular and symmetrical shape, which can be more conducive to the realization of the induction function and facilitate the design of the induction algorithm formula and other parts of the software.
[0034] In this embodiment, adjustment parts 1311 for adjusting the impedance of the driving conductive wires are provided on all the driving conductive wires 131. Providing adjustment parts 1311 for adjusting the impedance of the driving conductive wires 131 on all the driving conductive wires 131 is a preferred solution, which can ensure the parameter consistency of each induction unit composed of the induction circuit layer 12 and the driving circuit layer 13, and facilitate the realization of the touch control function of the touch control module 1.
[0035] In this embodiment, a plurality of output contacts 111 are provided on the substrate 11. The induction circuit layer 12 includes several induction conductive wires 121, and both ends of each induction 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 1312 of each driving conductive wire 131 is electrically connected to the output contacts 111.
[0036] In this embodiment, the induction conductive wire 121 and the driving conductive wire 131 are arranged in a crosswise manner, and the induction conductive wire 121 and the driving conductive wire 131 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.
[0037] In this embodiment, the driving conductive wire body 1312 of the driving conductive wire 131 in each touch unit is in an I shape.
[0038] In this embodiment, the induction circuit layer 12 is an ITO induction circuit, the driving circuit layer 13 is an ITO driving circuit, and the base material 11 is a COP film base material; the functional sheet 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.
[0039] In this embodiment, the functional sheet further includes a display module 2, and the display module 2 and the touch module 1 are detachably connected. The detachable connection method is the prior art, as long as the display module 2 and the touch module 1 can be separated. Preferably, the display module 2 can be connected to the glass bottom plate by an adhesive method, so as to realize the connection with the touch module.
[0040] In this embodiment, the display module 2 includes a display screen main body 21 and a display circuit 22. The display screen main 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 module 1 and the display module 2 can be realized.
[0041] In this embodiment, the display module 2 is provided with a notch 3 at the positions of the plurality of input contacts 221 to expose the input contacts 221. Since the touch module 1 and the display module 2 in the prior art are of an integrated structure, the circuit connections between the touch module 1 and the display module 2 are also non-exposed, and there is no need to provide exposed input contacts 221. In this application, the touch module 1 and the display module 2 are set to be detachably connected. In order to better realize the assembly and processing of the touch module 1 and the display module 2 and the normal electrical connection, a notch 3 needs to be provided at the position corresponding to the input contacts 221.
[0042] In this embodiment, the functional chip further includes an FPC 4. The FPC 4 includes a first pin group 41, a connecting line 42, and a second pin group 43. The first pin group 41 is electrically connected to the second pin group 43 through the connecting line 42. The first pin group 41 is electrically connected to the output contacts 111 in a one-to-one correspondence, and the second pin group 43 is electrically connected to the input contacts 221 in a one-to-one correspondence. Through the above connection structure, by defining the first pin group 41 and the second pin group 43, the binding between the multiple output contacts 111 on the multiple touch control modules 1 and the multiple 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.
[0043] 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 capacitive touch screen functional sheet, characterized in that: The invention comprises a touch module, wherein the touch module comprises a substrate, a sensing circuit layer and a driving circuit layer, wherein 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 comprises a plurality of driving conductive lines, and at least one driving conductive line is provided with an adjusting part for adjusting the impedance of the driving conductive line.
2. A capacitive touch screen functional sheet according to claim 1, characterized in that: The regulating part is an etching layer etched on the driving conductive line. The driving conductive line includes a driving conductive line body and the etching layer. The etching layer and the driving conductive line body are insulated from each other.
3. A capacitive touch screen functional sheet according to claim 2, characterized in that: The main body of the driving conductive line is in an "I-shape".
4. The capacitive touch screen functional sheet according to claim 1, characterized in that: A plurality of output contacts are arranged on the substrate, and the sensing circuit layer comprises 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.
5. The capacitive touch screen functional sheet according to claim 4, characterized in that: The sensing conductive wires and the driving conductive wires are arranged in a cross-shaped manner, and the sensing conductive wires and the driving conductive wires cooperate to form a plurality of touch sensing units.
6. The capacitive touch screen functional sheet according to claim 5, characterized in that: The driving conductive wire bodies of the driving conductive wires in each touch control unit are all I-shaped.
7. The capacitive touch screen functional sheet according to claim 1, characterized in that: The functional sheet also includes a display module, and the display module and the touch module are detachably connected.
8. The capacitive touch screen functional sheet according to claim 7, characterized in that: The display module includes a display screen body and a display circuit, the display screen 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.
9. The capacitive touch screen functional sheet according to claim 8, characterized in that: The display module is provided with notches at the positions of a plurality of input contacts to expose the input contacts.
10. The capacitive touch screen functional sheet according to claim 9, characterized in that: The functional sheet also includes an FPC, which includes a first pin group, a connecting line and a second pin group, the first pin group and the second pin group are electrically connected through the connecting line, the first pin group is electrically connected to the output contacts and corresponds one to one, and the second pin group is electrically connected to the input contacts and corresponds one to one.