Disclosure of Invention
According to the capacitive screen with the channel switching function and the terminal equipment, the two groups of channels of the sensing electrode and the driving electrode which can be switched are arranged, so that functional backup of the capacitive screen is realized, the problem of poor maintenance of the capacitive screen due to partial channel damage is solved, and the maintenance cost is reduced.
The invention adopts the following technical scheme:
The capacitive screen with the channel switching function comprises a cover plate, a first bonding layer and a conductive layer which are sequentially stacked, wherein the conductive layer comprises a vertical induction electrode layer and a driving electrode layer, the induction electrode layer comprises a first induction electrode and a second induction electrode which are alternately arranged at intervals, the driving electrode layer comprises a first driving electrode and a second driving electrode which are alternately arranged at intervals, the capacitive screen further comprises an MCU module for controlling the working states of the first induction electrode, the second induction electrode, the first driving electrode and the second driving electrode, and the MCU module is respectively and electrically connected with the induction electrode layer and the driving electrode layer.
The capacitive screen comprises an induction IC module and a driving IC module, wherein the induction IC module and the driving IC module are electrically connected with the MCU module, the first induction electrode and the second induction electrode are respectively connected to a first induction pin and a second induction pin of the induction IC module through an induction channel FPC, the first driving electrode and the second driving electrode are respectively connected to a first driving pin and a second driving pin of the driving IC module through a driving channel FPC, and the MCU module controls the first induction electrode, the second induction electrode, the first driving electrode and the second driving electrode by controlling the working states of the first induction pin, the second induction pin, the first driving pin and the second driving pin.
Further, the first induction electrode and the second induction electrode are arranged in parallel and insulated from each other, and the first driving electrode and the second driving electrode are arranged in parallel and insulated from each other.
Further, the capacitive screen further includes a second adhesive layer that insulates the sense electrode layer from the drive electrode layer.
Further, the crossing positions of the first sensing electrode and/or the second sensing electrode and the first driving electrode and/or the second driving electrode are/is connected in an insulating manner through a metal bridging structure.
Further, the patterns of the sensing electrode layer and the driving electrode layer include diamond, bar, rectangle.
Further, the conductive layer is a nano silver conductive layer or an ITO conductive layer or a metal grid conductive layer.
Further, the conductive layer is composed of double-sided conductive glass and single-layer double-sided conductive films respectively positioned on two sides of the double-sided conductive glass, and the single-layer double-sided conductive films respectively form a driving electrode layer and an induction electrode layer.
Further, the first adhesive layer is an OCA optical adhesive layer.
The invention also provides a terminal device comprising the capacitive screen with the channel switching function.
According to the capacitive screen with the channel switching function, a group of new second sensing electrodes and new second driving electrodes are arranged on the conventional first sensing electrodes and the conventional first driving electrodes of the conductive layers at intervals, and working states of the first sensing electrodes, the first driving electrodes, the second sensing electrodes and the second driving electrodes are respectively controlled through the MCU module, so that switching of the two groups of channels and functional backup of the capacitive screen are realized. According to the invention, the two groups of channels are arranged by adjusting the pattern design of the conductive layer, so that the switching function of the two groups of channels can be realized on the basis of not additionally adding sensing and driving materials, namely not increasing the hardware cost of the touch screen, and the hardware maintenance cost is saved.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, the drawings which are used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a capacitive screen with channel switching according to the present invention;
FIG. 2 is a schematic cross-sectional view of a capacitive screen with channel switching according to a first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a capacitive screen with channel switching according to a second embodiment of the present invention;
in the figure, the structure comprises a 1-cover plate, a 2-first bonding layer, a 3-conducting layer, a 4-sensing electrode layer, a 41-first sensing electrode, a 42-second sensing electrode, a 5-driving electrode layer, a 51-first driving electrode, a 52-second driving electrode, a 6-sensing channel FPC, a 7-sensing IC module, an 8-driving channel FPC, a 9-driving IC module, a 10-MCU module, a 11-second bonding layer and a 12-metal bridging structure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
A capacitive screen with a channel switching function is shown in fig. 1, and comprises a cover plate 1, a first bonding layer 2 and a conductive layer 3 which are sequentially stacked, wherein the conductive layer 3 comprises a sensing electrode layer 4 and a driving electrode layer 5 which are vertically arranged, the sensing electrode layer 4 comprises a first sensing electrode 41 and a second sensing electrode 42 which are alternately arranged at intervals, the driving electrode layer 5 comprises a first driving electrode 51 and a second driving electrode 52 which are alternately arranged at intervals, the capacitive screen further comprises an MCU module 10 for controlling the working states of the first sensing electrode 41, the second sensing electrode 42, the first driving electrode 51 and the second driving electrode 52, and the MCU module 10 is electrically connected with the sensing electrode layer 4 and the driving electrode layer 5 respectively.
Specifically, the capacitive screen comprises a sensing IC module 7 and a driving IC module 9 which are electrically connected with the MCU module 10, wherein a first sensing electrode 41 and a second sensing electrode 42 are respectively connected to a first sensing pin and a second sensing pin (not shown in the figure) of the sensing IC module 7 through a sensing channel FPC 6, a first driving electrode 51 and a second driving electrode 52 are respectively connected to a first driving pin and a second driving pin (not shown in the figure) of the driving IC module 9 through a driving channel FPC 8, and the MCU module 10 controls the first sensing electrode 41, the second sensing electrode 42, the first driving electrode 51 and the second driving electrode 52 by controlling the working states of the first sensing pin, the second sensing pin, the first driving pin and the second driving pin.
According to the capacitive screen with the channel switching function, two groups of different touch programs can be formed by arranging a group of new second sensing electrodes 42 and new second driving electrodes 52 on the conventional first sensing electrodes 41 and the first driving electrodes 51 of the conductive layer 3 at intervals and correspondingly adding a group of pins on the sensing IC module 7 and the driving IC module 9. By programming the program codes, the two groups of driving electrodes and sensing electrodes can be controlled to work respectively, two groups of different touch programs are burnt into the MCU module, and channel pins of the sensing and driving IC module are controlled respectively through the MCU module, so that switching of two groups of channels and functional backup of the capacitive screen are realized. According to the invention, the two groups of channels are arranged by adjusting the pattern design of the conductive layer, so that the backup remedy scheme is conveniently started in a software upgrading mode under the condition of failure of the capacitive screen on the basis of not additionally adding sensing and driving materials, namely not increasing the hardware cost of the touch screen, the switching function of the two groups of channels is realized, and the hardware maintenance cost is saved.
It should be noted that, in the present invention, the program code written for implementing the operation of the two sets of driving electrodes and sensing electrodes respectively may be implemented by using a software programming means conventional in the art, and the present invention is not limited in particular. The invention adds a group of channels on the induction electrode and the driving electrode layer respectively by adjusting pattern design, and correspondingly adds pins on the IC module to realize the function switching of the channels, and the specifically written program codes, related software and the like are all the prior art, only play a role in selecting the channels, and the invention is not a technical scheme provided for the software.
Specifically, the first sensing electrode 41 and the second sensing electrode 42 are insulated from each other in parallel, and the first driving electrode 51 and the second driving electrode 52 are insulated from each other in parallel. The first sensing electrode 41 and the second sensing electrode 42 and the first driving electrode 51 and the second driving electrode 52 which are arranged in parallel and at staggered intervals are insulated from each other and do not contact with each other, and the electrodes do not influence each other. More specifically, the number of the first/second sensing/driving electrodes and the distance between the adjacent electrodes in the sensing electrode layer 4 and the driving electrode layer 5 are not particularly limited, and the sensing electrode layer may be allocated according to the product size or selected according to the need, and when any one of the first sensing/driving electrode and the second sensing/driving electrode is used, the finger touch function may be realized at any position through the capacitive unit.
Specifically, as a first embodiment of the present invention, as shown in fig. 1 and 2, the capacitive screen includes a cover plate 1, a first adhesive layer 2, an induction electrode layer 4, a second adhesive layer 11, and a driving electrode layer 5, which are sequentially stacked. In the present embodiment, the sense electrode layer 4 and the drive electrode layer 5 are insulated by the second adhesive layer 11. The first sensing electrode 41 and the second sensing electrode 42 on the sensing electrode layer 4 are arranged in parallel and insulated from contact, the first driving electrode 51 and the second driving electrode 52 on the driving electrode layer 5 are arranged in parallel and insulated from contact, and the sensing electrode layer 4 and the driving electrode layer 5 are perpendicular to each other and insulated from contact due to the arrangement of the second bonding layer 11.
Specifically, as shown in fig. 1 and 3, the second embodiment of the present invention comprises a cover plate 1, a first adhesive layer 2 and a conductive layer 3 which are sequentially stacked, wherein the conductive layer 3 comprises a vertically arranged sensing electrode layer 4 and a driving electrode layer 5, the sensing electrode layer 4 comprises a first sensing electrode 41 and a second sensing electrode 42 which are alternately arranged at intervals, the driving electrode layer 5 comprises a first driving electrode 51 and a second driving electrode 52 which are alternately arranged at intervals, and the crossing positions of the first sensing electrode 41 and/or the second sensing electrode 42 and the first driving electrode 51 and/or the second driving electrode 52 are connected through a metal bridging structure 12 for realizing the insulation of the vertical crossing positions of the sensing electrodes and the driving electrodes.
Specifically, the patterns of the sense electrode layer 4 and the drive electrode layer 5 include diamond, bar, rectangle. Of course, the patterns of the sensing electrode layer 4 and the driving electrode layer 5 can be adjusted according to actual use conditions, and diamond-shaped, bar-shaped and rectangular patterns are only a preferred embodiment, and are not specific limitations of the electrode layer patterns of the present invention.
Specifically, the conductive layer 3 is a nano silver conductive layer or an ITO conductive layer or a metal grid conductive layer. More specifically, the conductive layer is a conductive medium coated and cured on the substrate, for example, the conductive layer is a conductive paste coated and cured on the surface of the substrate, and the conductive paste is one or more of silver nanowires, gold nanowires, copper nanowires, nickel nanowires, silver nanoparticles, gold nanoparticles, copper nanoparticles, and nickel nanoparticles. The substrate is any one of PET, COP, TAC, PVC, PI, PE. Those skilled in the art may actually select according to the application conditions of the capacitive screen, etc., and the present invention is not limited to the specific embodiments, and the above-mentioned several substrates are not limited to the specific embodiments.
More specifically, as an embodiment of the present invention, the substrate of the conductive layer is double-sided conductive glass, a single-layer double-sided conductive film is respectively disposed on both sides of the substrate as electrodes, and the driving electrode layer and the sensing electrode layer are respectively disposed on both sides of the substrate. The structure of this scheme is simple, practices thrift the cost.
Specifically, the first adhesive layer 2 is an OCA optical adhesive layer, and the second adhesive layer 11 is an OCA optical adhesive layer. The OCA optical cement has excellent bonding effect and good insulating effect, so that electrodes perpendicular to each other respectively positioned on the induction electrode layer 4 and the driving electrode layer 5 are not contacted, the insulation is effective, and the occurrence of short circuit phenomenon is prevented.
The invention also provides a terminal device comprising the capacitive screen with the channel switching function. Specifically, the terminal equipment is a mobile phone, a tablet computer, a notebook computer, an electronic paper book, an advertising machine, a conference machine, an electronic blackboard and the like.
The invention has been further described with reference to specific embodiments, but it should be understood that the detailed description is not to be construed as limiting the spirit and scope of the invention, but rather as providing those skilled in the art with the benefit of this disclosure with the benefit of their various modifications to the described embodiments.