CN112799543A - Touch device and preparation method thereof, touch display device and wiring scheme generation method - Google Patents

Touch device and preparation method thereof, touch display device and wiring scheme generation method Download PDF

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Publication number
CN112799543A
CN112799543A CN202110256283.6A CN202110256283A CN112799543A CN 112799543 A CN112799543 A CN 112799543A CN 202110256283 A CN202110256283 A CN 202110256283A CN 112799543 A CN112799543 A CN 112799543A
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CN
China
Prior art keywords
touch
display
module
lead
area
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Pending
Application number
CN202110256283.6A
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Chinese (zh)
Inventor
黄英
辛梦丹
杨陈明
黄威龙
林行
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Wuxi Biange New Material Technology Co ltd
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Wuxi Biange New Material Technology Co ltd
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Priority to CN202110256283.6A priority Critical patent/CN112799543A/en
Publication of CN112799543A publication Critical patent/CN112799543A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

The application provides a touch device, a preparation method, a touch display device and a wiring scheme generation method, relates to the technical field of touch and solves the problem of how to optimize the interaction function of the conventional display. The touch device comprises a touch module, a touch controller electrically connected with the touch module and a module fixing component. The touch module is used for sensing a capacitance signal generated by touch operation; the touch controller is used for determining a control signal corresponding to the capacitance signal based on the capacitance signal, wherein the control signal is used for controlling a display electrically connected with the touch controller; the module fixing component is used for fixing the touch module on the display side of the display. This application need not treat the display of repacking and carry out any dismouting operation, only needs lower repacking cost, can make current non-touch display possess the interactive function of touch-control formula, and in addition, this application can also make current touch-control display possess better operation effect, has expanded the application scope of current touch-control display.

Description

Touch device and preparation method thereof, touch display device and wiring scheme generation method
Technical Field
The application relates to the technical field of touch control, in particular to a touch control device, a preparation method of the touch control device, a touch control display device and a wiring scheme generation method.
Background
The existing display includes a touch display and a non-touch display, and compared with the touch display, the non-touch display is very inconvenient in performing some complex operations, such as inputting a plurality of continuous characters (searching for a video, inputting a WIFI password), selecting one option in an interface containing a plurality of options, and the like. In addition, the touch display size of the conventional touch display is fixed, which may cause inconvenience to the user in some application scenarios, for example, the touch display size is not consistent with the size of the touch area that the user actually wants to operate.
Therefore, how to optimize the interactive function of the existing display becomes an urgent problem to be solved.
Disclosure of Invention
In view of this, embodiments of the present application provide a touch device, a manufacturing method thereof, a touch display device, and a wiring scheme generation method, so as to optimize an interactive function of an existing display.
In a first aspect, an embodiment of the present application provides a touch device applied to a display, where the touch device includes a touch module configured to sense a capacitive signal generated by a touch operation; the touch module comprises a driving electrode layer and a sensing electrode layer, wherein the driving electrode layer and the sensing electrode layer are respectively provided with a patterned metal grid electrode; the touch controller is electrically connected with the touch module and the display respectively and used for determining a control signal corresponding to the capacitance signal based on the capacitance signal and sending the control signal to the display so as to control the display to respond to touch operation; and the module fixing component is used for fixing the touch module on the display side of the display.
In an embodiment of the present application, the touch device further includes a flexible circuit board electrically connected to the touch module and the touch controller, respectively, and the flexible circuit board is configured to transmit a capacitive signal sensed by the touch module to the touch controller; the flexible circuit board comprises a first extending end and a second extending end opposite to the first extending end, the first extending end is located on the display side of the display, the first extending end is connected to the touch module, the second extending end is bent to the non-display side of the display, and the second extending end is connected to the touch controller.
In an embodiment of the present application, a module fixing assembly includes: the bonding layer is used for bonding the touch module to the display side of the display; and/or the detachable frame is sleeved on the periphery of the display, and the touch module is connected with the detachable frame in a nested manner.
In an embodiment of the application, the touch controller is fixedly mounted on the non-display side of the display through a pasting component, or the touch controller is suspended on the upper edge of the display through a hook component, or the touch controller is clamped on any edge of the display through a clamping groove structure.
In an embodiment of the present application, a touch controller includes: the signal identification unit is used for generating a corresponding touch control signal according to the capacitance signal; the touch controller further includes: and the signal conversion unit is connected with the signal identification unit and is used for converting the touch control signal into an external control signal which can be identified by the display.
In an embodiment of the present application, a touch controller includes: and the touch control calibration module is used for calibrating the capacitance signal.
In an embodiment of the present application, the touch controller is connected to a USB interface of the display through a transmission signal line.
In an embodiment of the present application, both the sensing electrode layer and the driving electrode layer of the touch module have a touch area and a lead area located at the periphery of the touch area, wherein the touch area is provided with a metal grid electrode; the lead area comprises a plurality of leads with one ends connected with the metal grid electrodes; at least one side of the lead area is provided with at least one line concentration part, and the other ends of the leads are converged at the line concentration part.
In an embodiment of the present application, the line concentration portion is disposed on a first side of the lead region corresponding to a side where the USB interface of the display is located.
In an embodiment of the present application, the display includes a frame with each edge having a different width; the line concentration part is arranged on a second side, corresponding to the side of the frame with the largest width, in the frame of the display, in the line leading area.
In an embodiment of the present application, the wire concentration portion includes at least two; at least two line concentration parts are respectively arranged on two opposite sides in the lead wire area, or at least two line concentration parts are respectively arranged on two adjacent sides in the lead wire area.
In a second aspect, an embodiment of the present application provides a touch display device, including: the touch device of the first aspect, and a display electrically connected to the touch device, the display being configured to display, according to a control signal, an instruction corresponding to the execution of the touch operation.
In a third aspect, an embodiment of the present application provides a wiring scheme generation method, which is applied to the touch device in the first aspect, and includes: determining a wiring limiting parameter corresponding to the touch device, wherein the wiring limiting parameter comprises at least one of a USB interface position parameter corresponding to the display, a frame width parameter corresponding to the display, a line concentration position parameter corresponding to the touch module and a line concentration quantity parameter; and generating a wiring scheme corresponding to the touch device according to the wiring limiting parameter.
In a fourth aspect, an embodiment of the present application provides a method for manufacturing a touch device, including: generating a plurality of lead wires in a lead wire area of the touch module according to a wiring scheme, wherein the wiring scheme is generated by using the wiring scheme generation method of the third aspect; preparing a corresponding flexible circuit board according to the number of the line concentration parts and the number of the leads of each line concentration part in the wiring scheme, and connecting each line concentration part to the touch controller through the flexible circuit board.
The embodiment of the application provides a touch device, a manufacturing method of the touch device, a touch display device and a wiring scheme generation method. This application need not treat the display of repacking and carry out any dismouting operation, only needs lower repacking cost, is fixed in the display with touch device on, can make current non-touch display possess the interactive function of touch-control formula, in addition, this application can also make current touch display possess better operation effect, has expanded the application scope of current touch display.
Drawings
Fig. 1 is a schematic structural diagram of a side view of a touch device and a display according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a touch module and a flexible circuit board in a touch device according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram illustrating a rear view angle of a display and a flexible circuit board in a touch device according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a touch controller in a touch module according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram illustrating an electrode arrangement and a lead arrangement of a touch module according to an embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram illustrating an electrode arrangement and a lead arrangement of a touch module according to another embodiment of the present disclosure.
Fig. 7 is a schematic structural diagram illustrating an electrode arrangement and a lead arrangement of a touch module according to another embodiment of the present disclosure.
Fig. 8 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure.
Fig. 9 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure.
Fig. 10 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure.
Fig. 11 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure.
Fig. 12 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure.
Fig. 13 is a schematic flow chart illustrating a method for generating a wiring scheme according to an embodiment of the present application.
Fig. 14 is a schematic flow chart illustrating a manufacturing method of a touch device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
Fig. 1 is a schematic structural diagram of a side view of a touch device and a display according to an embodiment of the present disclosure. As shown in fig. 1, the touch device provided in the embodiment of the present application is applied to a display 3, and the touch device includes a touch module 1, a touch controller 2 electrically connected to the touch module 1 and the display 3, and a module fixing component 5. The module fixing component 5 fixes the touch module 1 on the surface of the display side of the display 3, i.e. the effective display area of the display screen. The touch controller 2 is mounted on a non-display area of the display 3, and the touch controller 2 is electrically connected to the display 3. Specifically, the touch module 1 is configured to sense a capacitance signal generated by a touch operation, and the touch controller 2, which is electrically connected to the touch module 1 and the display 3, is configured to determine a control signal corresponding to the capacitance signal based on the capacitance signal sensed by the touch module 1 and send the control signal to the display 3, so as to control the display 3 to respond to the touch operation. Fig. 2 is a schematic structural diagram of a touch module and a flexible circuit board in a touch device according to an embodiment of the present disclosure. As shown in fig. 2, the touch module 1 includes a driving electrode layer 101 and a sensing electrode layer 100, and the driving electrode layer 101 and the sensing electrode layer 100 are respectively provided with patterned metal grid electrodes.
The display 3 is illustratively a non-touch display. The display 3 itself does not support the touch function, and if the operation is performed by a remote controller, a button or a mouse, the touch controller 2 needs to determine a corresponding control signal according to the capacitance signal.
According to the embodiment of the application, the display 3 is controlled by utilizing the control signal, so that the purpose that the display 3 can be controlled by a user through touch operation on the touch module 1 is achieved. Therefore, the purpose of modifying the non-touch display into the touch display is realized by using the touch device, namely, the non-touch display can realize the touch interactive function only by lower modification cost.
Illustratively, the display 3 is a touch display. When the touch area is inconsistent with the actual controlled area, the embodiment of the application can convert the capacitance signal into the coordinate data corresponding to the touch area and the actual controlled area, that is, the control signal is the coordinate data, and the control signal is transmitted to the display 3, so that the processing system inside the display 3 can recognize and respond conveniently, the calibration of the touch area is realized, and the touch interactive function of the existing display is further optimized.
For example, the touch module 1 is formed by using a substrate as a carrier, and a driving electrode layer 101 and a sensing electrode layer 100 which are stacked are disposed on the substrate, a plurality of sensing electrodes 1001 are distributed on the sensing electrode layer 100, and a plurality of driving electrodes 1010 are distributed on the driving electrode layer 101. Alternatively, both the sensing electrode 1001 and the driving electrode 1010 in the embodiment of the present application may employ patterned metal mesh electrodes. Specifically, the pattern of the metal grid electrode is preferably an irregular polygonal grid pattern formed by copper metal wires with the width of 4-15 microns, so that interference fringes are avoided, and the visibility of a screen is ensured.
In an embodiment, the touch controller 2 may be understood as a Printed Circuit Board (PCB) box, a chip such as an Integrated Circuit (IC) and a signal conversion chip is Integrated inside the PCB box, and the electrodes in the touch module 1 are electrically connected to the chip in the touch controller 2 through electrode leads. When a touch object performs touch operation on the touch module 1, capacitance change between the two electrode layers generates a capacitance signal, and the touch module 1 senses the capacitance signal generated by the touch operation; the touch control module 1 is electrically connected with a touch control controller 2, the touch control controller 2 obtains a capacitance signal output by the touch control module 1, a touch control IC chip in the touch control controller 2 can analyze information such as a touch position and a touch duration of a touch object according to variation data of the capacitance signal, a signal conversion chip determines a corresponding control signal according to the capacitance signal, the control signal is transmitted to a display 3 electrically connected with the touch control controller 2, a user can control the display 3 through touch control operation on the touch control module 1, the display 3 displays an instruction corresponding to the touch control operation according to the control signal, and the touch control type interactive function of the display 3 is completed.
In an embodiment of the present application, the module fixing assembly 5 includes: the bonding layer is used for bonding the touch module 1 to the display side of the display 3; and/or, the frame can be dismantled, the suit is in the periphery of display 3, and touch module 1 is connected with the frame that can dismantle nestedly.
Exemplarily, the bonding layer may be a double-sided adhesive, the double-sided adhesive is uniformly coated on the peripheral edge of the display side of the display 3, and the touch module 1 is fixed on the display side of the display 3 in an adhering manner; the detachable frame matched with the display 3 can be arranged, the detachable frame is sleeved on four sides of the display 3, and then the touch module 1 is connected with the detachable frame in a nested mode, so that the touch module 1 is fixed on the display side of the display 3. In the process of nested connection of the touch module 1 and the detachable frame, double-sided adhesive can be matched, so that the touch module 1 is more fixed. The detachable frame can be a frame which is processed in advance and has four sides with the size meeting the standard of the display 3; or the frame can be formed by arbitrarily cutting and splicing easily-cut plastic or rubber edge strips according to the size of the display 3; the frame may be U-shaped or quadrangular, as long as it can be fitted around the four sides of the display 3.
It should be understood, however, that in other embodiments of the present application, the module securing assembly 5 includes a combination of one or more of an adhesive layer and a removable bezel.
In an embodiment of the present application, the touch controller 2 is fixedly mounted on the non-display side of the display 3 through a pasting component, or the touch controller 2 is suspended on the upper edge of the display 3 through a hook component, or the touch controller 2 is clamped on any side of the display 3 through a slot structure.
Illustratively, the pasting component may be a double-sided adhesive or a magnet, and the touch controller 2 is fixed on the back of the display 3 by the adhesive or the magnet; a hook component can also be designed on the touch controller 2, and the touch controller 2 is hung on the upper edge of the non-display side of the display 3 through the hook component; a card slot may also be formed in the touch controller 2, and the card slot is connected to any side of the display 3. The embodiment of the present application is not particularly limited, as long as the touch controller 2 is fixed on the non-display side of the display 3.
In an embodiment, the display 3 may be any one of an LED display and an OLED display, which is not particularly limited in the embodiment of the present application.
Fig. 3 is a schematic structural diagram illustrating a rear view angle of a display and a flexible circuit board in a touch device according to an embodiment of the present application. As shown in fig. 2 and fig. 3, in the embodiment of the present application, the touch device further includes a flexible circuit board 4 electrically connected to the touch module 1 and the touch controller 2, respectively, and the flexible circuit board 4 is used for transmitting the capacitive signal sensed by the touch module 1 to the touch controller 2; the flexible circuit board 4 includes a first extending end 400 and a second extending end 401 opposite to the first extending end 400, the first extending end 400 is located on the display side of the display 3, the first extending end 400 is connected to the touch module 1, the second extending end 401 is bent to the non-display side of the display 3, and the second extending end 401 is connected to the touch controller 2.
Exemplarily, the touch module 1 is fixed in the effective display area of the display 3, the touch controller 2 is installed in the non-display area of the display 3, and the touch module 1 and the touch controller 2 are difficult to be directly connected, so the touch module 1 and the touch controller 2 are connected by using the flexible circuit board 4 which is flexible and bendable. A plurality of electrode leads are arranged when the touch module 1 leaves a factory, terminals of the electrode leads are connected with the flexible circuit board 4, and the flexible circuit board 4 transmits a capacitance signal sensed by the touch module 1 to the touch controller 2.
Specifically, when a touch object performs a touch operation on the touch module 1, the touch module 1 senses a capacitance signal generated by the touch operation; the flexible circuit board 4 transmits the capacitance signal sensed by the touch module 1 to the touch controller 2, the touch controller 2 obtains the capacitance signal output by the touch module 1, and determines a control signal corresponding to the capacitance signal based on the capacitance signal, the control signal is used for controlling the display 3, so that a user can control the display 3 through touch operation on the touch module 1, and the display 3 displays an instruction corresponding to the touch operation according to the control signal, thereby completing the touch interactive function of the non-touch display 3. Through flexible circuit board 4 with the flexible connection between touch module 1 and the touch controller 2, not only realized changeing non-touch display for touch display, when reducing the repacking cost, guaranteed display 3's touch function moreover.
It should be further noted that the specific style (such as the whole width, the length, the number of internal leads, etc.) of the flexible circuit board 4 can be customized according to the actual requirement (the number of electrode leads, etc.), and the style of the flexible circuit board 4 is not specifically limited in this application.
In an embodiment of the present application, as shown in fig. 2 and fig. 3, the first extending end 400 is located on a display side of the display 3, the display side is an effective display area of the display 3, the touch module 1 is also located on the display side, and the flexible circuit board 4 is connected to the touch module 1 through the first extending end 400. The second extending end 401 is bent to the non-display side of the display 3, the non-display side is a non-effective display area of the display 3, the touch controller 2 is also located on the non-display side of the display 3, and the second extending end 401 is connected to the touch controller 2. The flexible circuit board 4 is bent from the display side of the display 3 to the non-display side, the first extension end 400 is connected with the touch module 1, and the second extension end 401 is connected with the touch controller 2, so that the flexible connection between the touch module 1 and the touch controller 2 is realized, and the display effect of the display 3 is not influenced.
Fig. 4 is a schematic structural diagram of a touch controller in a touch module according to an embodiment of the present disclosure. As shown in fig. 4, the touch controller 2 includes a signal recognition unit 200 and a signal conversion unit 201. The signal identification unit 200 is configured to generate a corresponding touch control signal according to the capacitance signal; and the signal conversion unit 201 is connected to the signal identification unit 200 and is configured to convert the touch control signal into an external control signal recognizable by the display 3.
Illustratively, the signal conversion unit 201 performs format conversion on the touch control signal, converts the touch control signal into a peripheral control signal recognizable by the display 3, the processing system inside the display 3 recognizes and responds to the peripheral control signal, the user can control the display 3 through touch operation on the touch module 1, and the display 3 displays an instruction corresponding to the touch operation according to the peripheral control signal, thereby completing an interactive function of the display 3. However, it should be understood that the format conversion of the touch control signal is not limited to the conversion type of the signal, and may be converting coordinate data corresponding to the actual controlled area and the touch area, and/or converting a proportional relationship between coordinates of the actual controlled area and coordinates of the touch area. For example, when the touch area is not consistent with the actual controlled area, the touch area is only a partial area at the lower right corner of the screen of the display 3, and the controlled area is the entire display screen, and the touch control signal is converted into coordinate data corresponding to the touch area and the actual controlled area and transmitted to the display 3, so that the touch area can be conveniently recognized and responded by a processing system inside the display 3, and calibration of the touch area is further achieved.
In one embodiment, as shown in fig. 4, the touch controller 2 includes a touch calibration module 202 for calibrating the capacitance signal. The touch calibration module 202 presets a capacitance threshold value therein, and the touch calibration module 202 determines the validity of the capacitance signal output by the touch module 1 based on the preset capacitance threshold value, so as to calibrate the capacitance signal.
Specifically, when a touch object performs a touch operation on the touch module 1, the touch module 1 senses a capacitance signal generated by the touch operation; the touch calibration module 202 receives a capacitance signal output by the touch module 1, wherein the capacitance signal is a changed sensing capacitance value; and comparing the induction capacitance value with a preset capacitance threshold value, and if the induction capacitance value is greater than the set capacitance threshold value, determining that the induction capacitance value is valid, namely determining that the area generating the induction capacitance value is an area touched by a touch object.
In an embodiment of the present application, the touch controller 2 is connected to a Universal Serial Bus (USB) interface of the display 3 through a transmission signal line. As shown in fig. 3, the non-display side of the display 3 is provided with a USB interface 7, and the USB interface 7 may be provided in a non-display area at the rear of the display 3. The display 3 is internally provided with a mainboard, a processing system of the display 3 is integrated on the mainboard, and the mainboard is electrically connected with the USB interface 7. The touch controller 2 is connected with the USB interface 7 through the transmission signal line 6, the connection is simple and convenient, and the display 3 itself does not need to be disassembled and assembled, so that the connection between the touch controller 2 and the USB interface of the display 3 can be completed. The transmission signal line 6 may be a USB data line, which is not specifically limited in this application.
Fig. 5 is a schematic structural diagram illustrating an electrode arrangement and a lead arrangement of a touch module according to an embodiment of the present disclosure. As shown in fig. 5, the sensing electrode layer 100 and the driving electrode layer 101 of the touch module 1 both have a touch area 10 and a lead area 11 located at the periphery of the touch area 10, wherein the touch area 10 is provided with a metal grid electrode; the lead region 11 includes a plurality of leads 14 having one end connected to the metal mesh electrode; at least one line concentration portion 13 is provided on at least one side of the lead region 11, and the other ends of the plurality of leads 14 are converged to the line concentration portion 13.
Specifically, the sensing electrode layer 100 and the driving electrode layer 101 have respective touch areas, the two touch areas are overlapped to form a touch area 10 of the touch module 1, and the touch area 10 is a central area of the touch module 1 and is equal to a display area of the touch screen. A metal mesh electrode is disposed in the touch area 10, and the patterned metal mesh electrode includes a sensing electrode 1001 and a driving electrode 1010. Illustratively, the touch module 1 includes a sensing electrode layer 100 and a driving electrode layer 101 stacked together, and the metal grid electrode includes a plurality of sensing electrodes 1001 extending along a first direction a on the sensing electrode layer 100 and a plurality of driving electrodes 1010 extending along a second direction B on the driving electrode layer 101. Fig. 5 (a) shows the sensing electrode layer 100 and the sensing electrode 1001, fig. 5 (b) shows the driving electrode layer 101 and the driving electrode 1010, and the sensing electrode layer 100 and the driving electrode layer 101 are stacked layer upon layer to form the touch area 10 (i.e., fig. 5 (c) shows the touch area 10). Alternatively, both the sensing electrode 1001 and the driving electrode 1010 in the embodiment of the present application may employ patterned metal mesh electrodes. Specifically, the pattern of the metal grid electrode is preferably an irregular polygonal grid pattern formed by copper metal wires with the width of 4-15 microns, so that interference fringes are avoided, and the visibility of a screen is ensured.
The first direction a and the second direction B are perpendicular to each other, and the first direction a or the second direction B may be an X-axis direction (transverse direction) or a Y-axis direction (longitudinal direction) of a two-dimensional rectangular coordinate system, that is, when the first direction a is the X-axis direction (transverse direction), the second direction B is the Y-axis direction (longitudinal direction), and when the first direction a is the Y-axis direction (longitudinal direction), the second direction B is the X-axis direction (transverse direction).
Specifically, the touch module 1 includes a first side (for example, the first side may be a left side in the orientation shown in fig. 5), a second side (for example, the second side may be an upper side in the orientation shown in fig. 5), a third side (for example, the third side may be a right side in the orientation shown in fig. 5), and a fourth side (for example, the fourth side may be a lower side in the orientation shown in fig. 5), which are adjacent to each other in sequence, where the first side and the third side are opposite, and the second side and the fourth side are opposite. The sensing electrode layer 100 includes a plurality of sensing electrodes 1001 extending from a first side to a third side (i.e., the first direction a), and the driving electrode layer 101 includes a plurality of driving electrodes 1010 extending from a second side to a fourth side (i.e., the second direction B).
Illustratively, the periphery of the touch area 10, i.e. the lead area 11 (i.e. the portion between the frame and the dashed line frame of the touch module 1 in fig. 5 (c)), the lead area 11 is adjacent to the touch area 10. The lead region 11 includes a plurality of leads 14 having one end connected to the metal mesh electrode; referring to fig. 5 (a), the plurality of leads 14 include a plurality of first leads 12 electrically connected to the plurality of sensing electrodes 1001. Referring to diagram (b) of fig. 5, the plurality of leads 14 further includes a plurality of second leads 22 electrically connected corresponding to the plurality of driving electrodes 1010.
In an embodiment, referring to fig. 5 (a), the wire collecting portion 13 is distributed on a first side of the lead area 11, one end of the first leads 12 is electrically connected to the sensing electrodes 1001, and the other end of the first leads 12 is converged on the wire collecting portion 13 on the first side; referring to fig. 5 (b), the wire collecting portion 13 is disposed on a second side of the wire lead area 11, one end of the plurality of second wire leads 22 is electrically connected to the plurality of driving electrodes 1010, and the other end of the plurality of second wire leads 22 is converged on the wire collecting portion 13 on the second side; that is, as shown in fig. 5 (c), two collecting portions 13 are provided on either side of the lead block 11, and the other ends of the plurality of leads 14 are converged at the two collecting portions 13. Therefore, the outgoing mode of the plurality of lead wires 14 is that the lead wires are outgoing from both sides, the lead wires are distributed on both sides of the lead wire area 11, and the lead wires are distributed relatively evenly, so that the frame of the touch module 1 is relatively narrow, and the corresponding wiring requirements can be met.
Fig. 6 is a schematic structural diagram illustrating an electrode arrangement and a lead arrangement of a touch module according to another embodiment of the present disclosure. Referring to fig. 6 (a), a plurality of first leads 12 are led out from two (or more) line concentration portions 13 on a first side in the lead region 11, one ends of the plurality of first leads 12 are electrically connected to a plurality of sensing electrodes 1001, and the other ends of the plurality of first leads 12 are respectively converged at the two (or more) line concentration portions 13 on the first side; referring to fig. 6 (b), the plurality of second leads 22 are led out at the two (or more) line concentration portions 13 on the fourth side in the lead region 11, one ends of the plurality of second leads 22 are electrically connected to the plurality of driving electrodes 1010, and the other ends of the plurality of second leads 22 are respectively converged at the two (or more) line concentration portions 13 on the fourth side; that is, as shown in fig. 6 (c), a plurality of collecting portions 13 are provided on either side of the lead block 11, and the other ends of the plurality of leads 14 are collected at the plurality of collecting portions 13. Therefore, the outgoing mode of the plurality of leads 14 is that the plurality of line concentration portions 13 at two sides are outgoing, the leads are distributed on two sides of the lead area 11, and the leads are outgoing from a plurality of positions, so that the frame of the touch module 1 is relatively narrowed, and the corresponding wiring requirements can be met.
Fig. 7 is a schematic structural diagram illustrating an electrode arrangement and a lead arrangement of a touch module according to another embodiment of the present disclosure. Referring to fig. 7 (a), the plurality of first leads 12 are distributed on the second side of the lead zone 11, one end of each of the plurality of first leads 12 is electrically connected to the plurality of sensing electrodes 1001, and the other end of each of the plurality of first leads 12 is converged at the line concentrating portion 13 on the second side; referring to fig. 7 (b), the plurality of second leads 22 are distributed on the second side of the lead region 11, one end of the plurality of second leads 22 is electrically connected to the plurality of driving electrodes 1010, and the other end of the plurality of second leads 22 converges at the line concentrating portion 13 on the second side; that is, as shown in fig. 7 (c), the wire collecting portion 13 is provided on the second side in the lead section 11. The outgoing mode of the signal lead of the touch module 1 is single-side concentrated outgoing, so that the outgoing position is prevented from being dispersed, and the edge width of the whole touch module 1 is further reduced. In other embodiments of the present application, the line concentrating portion 13 may be provided only on the third side or the fourth side.
Fig. 8 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure. Referring to fig. 8 (a), a plurality of first leads 12 are distributed on a first side and a second side of the lead zone 11, one end of the plurality of first leads 12 is electrically connected to the plurality of sensing electrodes 1001, and the other end of the plurality of first leads 12 is converged at the line concentration portion 13 on the first side and the second side; referring to fig. 8 (b), the plurality of second leads 22 are distributed on the third and fourth sides in the lead zone 11, one end of the plurality of second leads 22 is electrically connected to the plurality of driving electrodes 1010, and the other end of the plurality of second leads 22 is converged at the wire collecting portion 13 on the third and fourth sides; that is, as shown in fig. 8 (c), the line concentrating portions 13 are provided on multiple sides of the lead block 11. Therefore, the outgoing mode of the plurality of lead wires 14 is a multi-edge outgoing line, the lead wires are distributed on each side of the lead wire area 11, the more the outgoing positions are, the narrower the area occupied by the lead wires is, that is, the narrower the lead wire area 11 is, and the narrower the frame of the touch module 1 is relatively.
The embodiment of the application does not specifically limit the specific distribution position of the line concentration part 13, and can be flexibly set according to actual conditions, but the width of the lead wire area 11 needs to be within 1cm, so that the width of the frame of the touch module 1 is ensured.
It is further noted that the plurality of leads 14 may be a plurality of metal leads. The width of the plurality of leads 14 may be 4 to 15 μm, and the material may be silver, copper, or nano-sized conductive powder (powder particles are 10 to 100nm), or the like. The plurality of leads 14 may be formed by any one of screen printing, laser etching, 3D printing, and the like.
Fig. 9 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure. As shown in fig. 3 and 9, the line concentrator 13 is disposed on a first side of the lead region 11 corresponding to the USB interface of the display 3. The plurality of leads 14 are intensively distributed on the first side of the lead region 11, and the leading ends of the plurality of leads 14 are gathered at the concentrated part 13.
For example, the USB interface 7 is located at a position offset to the left of the display 3, and the line concentrating portion 13 of the touch module 1 is preferably located at a first side (i.e., the left side of the lead line region 11) corresponding to the USB interface 7 in the lead line region 11. The wire collecting portion 13 is a collection portion where the plurality of first leads 12 and the plurality of second leads 22 are collected, and the leading ends of the plurality of first leads 12 and the leading ends of the plurality of second leads 22 are collected in the wire collecting portion 13. The outgoing mode of the multiple leads 14 of the touch module 1 is single-side centralized outgoing, and the position of the concentrated line part 13 corresponds to the side of the USB interface 7 of the display 3, so that not only is the edge width of the whole touch module 1 reduced, but also the wiring position is more centralized, and the wiring between the touch module 1 and the USB interface 7 is facilitated.
It should be noted that the number of the line concentration portions 13 may be 1, and as shown in fig. 9, the first leads 12 and the second leads 22 converge to the middle of the first side (i.e., the left side) of the lead region 11. In other embodiments of the present application, 2, 3, or 4 collecting portions 13 on the first side may be provided, and the number of collecting portions 13 is not particularly limited in the present application.
Without being limited thereto, the first side may also mean an upper side, a right side or a lower side of the lead pad 11, as long as the first side corresponds to the side where the USB interface 7 is located, which is not particularly limited in the present application.
In an embodiment of the present application, the display 3 includes a frame with different widths; the line concentration portion 13 is disposed on a second side of the line concentration portion 11 corresponding to a side where a side having a maximum width is located in a frame of the display 3. Fig. 10 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure. As shown in fig. 10, the lead block 11 includes a second side corresponding to the side of the frame having the largest frame width, and the second side is provided with a collecting portion 13, and the leading ends of the plurality of leads 14 are collected in the collecting portion 13.
Specifically, the display 3 includes four frames, wherein the width of the upper frame is the largest of the four frames, the second side (i.e., the upper side) of the lead line region 11 is on the same side as the upper frame of the display 3, the plurality of lead lines 14 are led out from the second side of the lead line region 11, and the lead-out ends of the plurality of lead lines 14 are collected on the line collecting portion 13 on the second side. The second side corresponding to the side where the frame with the largest width is located is used for outgoing lines, so that the situation that the outgoing line positions are too dispersed is avoided, the wide frames are used for outgoing lines more, the outgoing line quantity of other relatively narrow frames is reduced, and the edge width of the whole touch module 1 is further reduced.
The number of the line concentration portions 13 in the line region 11 and on the side of the side having the largest width in the frame of the display 3 may be 1, or 2, 3, 4, or the like. The number of the wire collecting portions 13 is not particularly limited in the embodiment of the present application.
Without being limited thereto, the second side may also mean the left side, the right side or the lower side of the lead pad 11, as long as the second side corresponds to the side where the frame with the largest frame width is located, and the application does not specifically limit this.
In an embodiment of the present application, the wire-collecting portion 13 includes at least two; at least two of the line concentration portions 13 are respectively disposed at two opposite sides in the lead block 11, or at least two of the line concentration portions 13 are respectively disposed at two adjacent sides in the lead block 11.
Fig. 11 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure. Fig. 12 is a schematic structural diagram illustrating a lead arrangement of a touch module according to still another embodiment of the present disclosure. As shown in fig. 11 and 12, the hub portion 13 includes at least two; at least two wire collecting parts 13 are respectively arranged on two opposite sides in the lead area 11.
Exemplarily, as shown in fig. 11, one line collecting portion 13 is provided on each of the first and third sides. The lead-out ends of the first plurality of leads 12 converge to the collecting portion 13 on the first side (i.e., the left side in the lead block 11), and the lead-out ends of the second plurality of leads 22 converge to the collecting portion 13 on the third side (i.e., the right side in the lead block 11).
Exemplarily, as shown in fig. 12, two collecting portions 13 may be disposed on the first side and the third side, respectively. The leading ends of the first leads 12 are gathered at the two collecting parts 13 on the first side, and the leading ends of the second leads 22 are gathered at the two collecting parts 13 on the third side. Compared with a single-side outgoing line mode, the opposite-side outgoing line mode has the advantages that outgoing line positions are increased, an area occupied by the lead wires is relatively narrowed, and the edge width of the whole touch module 1 is further reduced.
It should be further noted that at least two line concentration portions 13 may also be distributed on the second side and the fourth side opposite to each other in the line lead region 11, the number of the line concentration portions 13 on the two opposite sides may be 3, 4 or more, and the application does not limit the position and the number of the line concentration portions 13.
In one embodiment, at least two wire collecting portions 13 are respectively disposed at two adjacent sides in the wire guiding region 11. As shown in fig. 5 (a) and (b), a plurality of first leads 12 and a plurality of second leads 22 are disposed on the first side and the second side (i.e., the left side and the upper side of the lead block 11), respectively, the leading ends of the plurality of first leads 12 are gathered at the collecting portion 13 on the first side, and the leading ends of the plurality of second leads 22 are gathered at the collecting portion 13 on the second side; as shown in fig. 5 (c), a plurality of lead 14 terminals are gathered at the gathering part 13 on the adjacent first and second sides in the lead region 11. Compared with a single-side outgoing line mode, the mode of arranging the adjacent-side outgoing lines has the advantages that the outgoing positions are increased, the area occupied by the lead lines is relatively narrowed, and the side width of the whole touch module 1 is further reduced.
Without being limited thereto, as shown in fig. 5 (c), at least two wire collecting parts 13 may be provided at the first side and the fourth side (i.e., the left side and the lower side of the lead pad 11), respectively. In addition, the at least two line concentration portions 13 may be disposed on the second side and the third side, or the third side and the fourth side, as long as the at least two line concentration portions 13 are distributed on two adjacent sides in the lead region 11, the number of the line concentration portions 13 on the two adjacent sides may be 3, 4, or more, and the position and the number of the line concentration portions 13 are not limited in this application.
According to another aspect of the present application, an embodiment of the present application provides a touch display device, including: the touch device 1 of any of the above embodiments, and the display 3 electrically connected to the touch device 1. The touch device 1 comprises a touch module 1, a touch controller 2 and a module fixing component 5, wherein the touch controller 2 is electrically connected with the touch module 1 and the display 3 respectively, and the module fixing component 5 fixes the touch module 1 on the display side of the display 3. The touch module 1 is used for sensing a capacitance signal generated by touch operation; the touch controller 2 determines a control signal corresponding to the capacitance signal based on the capacitance signal, wherein the control signal is used for controlling the display 3 electrically connected with the touch controller 2, so that a user can control the display 3 through touch operation on the touch module 1, and the display 3 displays an instruction corresponding to the touch operation according to the control signal.
According to another aspect of the present application, an embodiment of the present application provides a wiring scheme generation method, which is applied to the touch device 1 of any of the above embodiments. Fig. 13 is a schematic flow chart illustrating a method for generating a wiring scheme according to an embodiment of the present application. As shown in fig. 13, the wiring scheme generating method includes the following steps.
In step 1310, a routing limitation parameter corresponding to the touch device is determined.
Illustratively, the wiring limiting parameter includes at least one of a USB interface 7 position parameter corresponding to the display 3, a frame width parameter corresponding to the display 3, a line concentration portion 13 position parameter and a line concentration portion 13 quantity parameter corresponding to the touch module 1.
Step 1320: and generating a wiring scheme corresponding to the touch device according to the wiring limiting parameter.
After the wiring limiting parameters are obtained, a wiring scheme meeting the requirements of the wiring limiting parameters can be randomly generated. The wiring scheme can be a single-side outgoing line, an adjacent-side outgoing line, a opposite-side outgoing line, a multi-side outgoing line and the like. Specifically, the wiring limiting parameter corresponding to the touch device 1 may be a position parameter of the USB interface 7, for example, the USB interface 7 is located at a position biased to the lower side of the display 3, and the outgoing line position of the touch module 1 preferably corresponds to the lower side of the display 3, so as to facilitate the connection between the touch module 1 and the USB interface 7. The wiring limiting parameter corresponding to the touch device 1 may be a frame width parameter corresponding to the display 3, and if the lower frame of the display 3 is wider than the rest frames, the wire outgoing mode is preferably a lower side wire outgoing mode of the wire leading region 11. The wiring limiting parameter corresponding to the touch device 1 may be a position parameter of the line concentration unit 13, a number parameter of the line concentration unit 13, or the like, and a wiring plan satisfying the wiring limiting parameter requirement may be generated based on the wiring limiting parameter. The single-side centralized wire outlet mode enables the wiring position to be more centralized and facilitates wiring; the multi-side outgoing line avoids the situation that the outgoing line positions are too dispersed, so that the wide frame is outgoing more, and the outgoing line quantity of other relatively narrow frames is reduced, thereby further reducing the edge width of the whole touch module 1, and the opposite outgoing line and the adjacent outgoing line are adapted to the corresponding wiring requirements.
According to another aspect of the present application, an embodiment of the present application provides a method for manufacturing a touch device. Fig. 14 is a schematic flow chart illustrating a manufacturing method of a touch device according to an embodiment of the present disclosure. As shown in fig. 14, the preparation method includes the following steps.
In step 1410, a plurality of leads 14 are generated in the lead area 11 of the touch module 1 according to the routing scheme.
Illustratively, the wiring scheme is generated using the wiring scheme generation method described in the above embodiments.
Exemplarily, a touch module 1 including a lead area 11 is prepared, and the touch module 1 is used for sensing a capacitance signal generated by a touch operation; the touch module 1 comprises a lead area 11 distributed with a plurality of leads 14; the touch module 1 is electrically connected with the touch controller 2, and the touch controller 2 is configured to determine a corresponding control signal based on a capacitance signal generated by the touch module 1. After the wiring scheme corresponding to the touch device is generated according to the wiring scheme generation method of the third aspect, a plurality of leads 14 are laid out at positions corresponding to the lead areas 11 of the touch module 1 according to the wiring scheme. For example, if the wiring scheme is a multi-edge outgoing line, the plurality of lead lines 14 are distributed on four edges of the lead line region 11, each edge is provided with the line collecting portion 13, and the plurality of lead lines 14 are collected in the plurality of line collecting portions 13, so that the situation that the outgoing line positions are too scattered is avoided, and the edge width of the whole touch module 1 is further reduced by the multi-edge outgoing line mode of the lead line region 11.
In step 1420, a corresponding flexible circuit board 4 is prepared according to the number of the line concentration parts 13 and the number of the leads of each line concentration part 13 in the wiring scheme, so as to connect each line concentration part 13 to the touch controller 2 through the flexible circuit board 4.
Illustratively, the outlet patterns determined by the routing schemes are different, and the number and positions of the corresponding line concentration parts 13 are also different. The corresponding flexible circuit board 4 is prepared according to the number of the wire collecting portions 13 in the wire lead section 11 determined by the wiring scheme and the number of the corresponding wire leads per wire collecting portion 13. For example: the wiring scheme is determined as a multi-sided outlet, and the number of the line concentration parts 13 is large as the outlet positions are increased, so that it is necessary to prepare a plurality of flexible circuit boards 4 to connect each line concentration part 13 to the touch controller 2. If the wiring scheme is single-sided wiring, the positions of the line concentration parts 13 are relatively concentrated, and a wider flexible circuit board 4 can be used to connect each line concentration part 13 to the touch controller 2 at the position of the outgoing line. The corresponding flexible circuit board 4 is prepared according to the number of the line concentration parts 13 and the number of the leads of each line concentration part 13 in the wiring scheme, so that different wiring requirements can be met, and the connection between the line concentration parts 13 and the touch controller 2 is facilitated.
Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defining "first", "second" may explicitly or implicitly include at least one such feature.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modifications, equivalents and the like that are within the spirit and principle of the present application should be included in the scope of the present application.

Claims (14)

1. A touch device applied to a display comprises:
the touch module is used for sensing a capacitance signal generated by touch operation; the touch module comprises a driving electrode layer and a sensing electrode layer, wherein the driving electrode layer and the sensing electrode layer are respectively provided with a patterned metal grid electrode;
the touch controller is electrically connected with the touch module and the display respectively and used for determining a control signal corresponding to the capacitance signal based on the capacitance signal and sending the control signal to the display so as to control the display to respond to the touch operation; and
and the module fixing component is used for fixing the touch module on the display side of the display.
2. The touch device of claim 1, further comprising:
the flexible circuit board is electrically connected with the touch module and the touch controller respectively and is used for transmitting the capacitance signal sensed by the touch module to the touch controller;
the flexible circuit board comprises a first extending end and a second extending end opposite to the first extending end, the first extending end is located on the display side of the display and connected to the touch module, the second extending end is bent to the non-display side of the display and connected to the touch controller.
3. The touch device of claim 1 or 2, wherein the module fixing member comprises:
the bonding layer is used for bonding the touch module to the display side of the display;
and/or the detachable frame is sleeved on the periphery of the display, and the touch module is connected with the detachable frame in a nested manner.
4. The touch device according to claim 1 or 2, wherein the touch controller is fixedly mounted on the non-display side of the display by a pasting component, or the touch controller is suspended on the upper edge of the display by a hook component, or the touch controller is clamped on any side of the display by a slot structure.
5. The touch device according to claim 1 or 2, wherein the touch controller comprises: the signal identification unit is used for generating a corresponding touch control signal according to the capacitance signal;
the touch controller further includes: and the signal conversion unit is connected with the signal identification unit and is used for converting the touch control signal into an external control signal which can be identified by the display.
6. The touch device according to claim 1 or 2, wherein the touch controller comprises:
and the touch control calibration module is used for calibrating the capacitance signal.
7. The touch device according to claim 1 or 2, wherein the touch controller is connected to the USB interface of the display through a transmission signal line.
8. The touch device according to claim 1 or 2, wherein the sensing electrode layer and the driving electrode layer of the touch module each have a touch area and a lead area located at a periphery of the touch area, wherein,
the touch area is provided with the metal grid electrode;
the lead area comprises a plurality of leads with one ends connected with the metal grid electrodes; at least one side of the lead wire area is provided with at least one wire concentration part, and the other ends of the plurality of lead wires are converged at the wire concentration part.
9. The touch device of claim 8, wherein the wire concentrating portion is disposed on a first side of the lead region corresponding to a side of the display where the USB interface is located.
10. The touch device of claim 8, wherein the display comprises a bezel having edges with widths that are not all the same;
the wire collecting part is arranged on a second side, corresponding to the side where the frame with the largest width is located, in the wire leading area.
11. The touch device of claim 8, wherein the wire concentration portion comprises at least two; the at least two line concentration parts are respectively arranged on two opposite sides in the lead area, or the at least two line concentration parts are respectively arranged on two adjacent sides in the lead area.
12. A touch display device, comprising:
the touch device of any one of claims 1-11; and
and the display is electrically connected with the touch device and used for displaying and executing the instruction corresponding to the touch operation according to the control signal.
13. A wiring scheme generation method applied to the touch device according to any one of claims 1 to 11, comprising:
determining a wiring limiting parameter corresponding to the touch device, wherein the wiring limiting parameter includes at least one of a USB interface position parameter corresponding to the display, a frame width parameter corresponding to the display, a line concentration position parameter corresponding to the touch module, and a line concentration quantity parameter;
and generating a wiring scheme corresponding to the touch device according to the wiring limiting parameter.
14. A method for manufacturing a touch device, comprising:
generating a plurality of lead lines in a lead line area of a touch module according to a wiring scheme, wherein the wiring scheme is generated by the wiring scheme generation method of claim 13;
preparing a corresponding flexible circuit board according to the number of the line concentration parts in the wiring scheme and the number of the leads of each line concentration part, and connecting each line concentration part to a touch controller through the flexible circuit board.
CN202110256283.6A 2021-03-09 2021-03-09 Touch device and preparation method thereof, touch display device and wiring scheme generation method Pending CN112799543A (en)

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