CN107340941A - A kind of capacitive touch screen and preparation method thereof - Google Patents
A kind of capacitive touch screen and preparation method thereof Download PDFInfo
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- CN107340941A CN107340941A CN201710509178.2A CN201710509178A CN107340941A CN 107340941 A CN107340941 A CN 107340941A CN 201710509178 A CN201710509178 A CN 201710509178A CN 107340941 A CN107340941 A CN 107340941A
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- Prior art keywords
- lead
- control electrode
- touch control
- conductive layer
- perforate
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Classifications
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
Abstract
A kind of capacitive touch screen of disclosure and preparation method thereof, the capacitive touch screen includes：Substrate, the first conductive layer, the first insulating barrier and the second conductive layer, wherein：First conductive layer is formed on substrate, includes the first lead and the second lead；First insulating barrier is covered in the first conductive layer, includes the first perforate and the second perforate；Second conductive layer is formed on the first insulating barrier, includes the 3rd lead and the 4th lead；First lead is connected by the first perforate with the 3rd lead, and the second lead is connected by the second perforate with the 4th lead.By setting the first lead and the second lead in the first conductive layer in capacitive touch screen, 3rd lead and the 4th lead are set in the second conductive layer, and first lead be connected with the 3rd lead, second lead is connected with the 4th lead, so, the impedance of lead can be reduced by increasing the thickness of lead, and then be effectively increased the size of capacitive touch screen viewing area.
Description
Technical field
The application is related to display technology field, more particularly to a kind of capacitive touch screen and preparation method thereof.
Background technology
Capacitive touch screen is a kind of touch-screen that be operated of electric current sensing that can utilize human body, generally may be used inside it
With comprising glass substrate, touch control electrode and contact conductor, wherein, touch control electrode can include emission electrode and receive electricity
Pole, contact conductor can include the transmitting lead being connected with emission electrode, and the reception lead being connected with receiving electrode.
With the demand that people show to the Rimless of capacitive touch screen, Rimless capacitive touch screen has become one
Kind development trend.In order to realize the Rimless of capacitive touch screen, generally, in design capacitance formula touch-screen, can select saturating
Bright material is designed in the viewing area of capacitive touch screen as contact conductor, and by contact conductor.As shown in figure 1, electric capacity
The contact conductor of formula touch-screen is designed in the viewing area of capacitive touch screen, wherein, 11 be transmitting lead, and 12 be transmitting electricity
Pole, 13 be reception lead and receiving electrode.In this manner it is achieved that the Rimless design of capacitive touch screen.
However, in actual applications, the contact conductor of capacitive touch screen is generally thinner, cause the resistance of contact conductor
Compare it is high, then, can only be by condenser type in the case where contact conductor resistance is higher because driving chip needs low resistance design requirement
The size design of the viewing area of touch-screen it is smaller, reduce resistance adapt to driving chip demand, so, will be unable to realize compared with
The capacitive touch screen of big viewing area.
The content of the invention
The embodiment of the present application provides a kind of capacitive touch screen and preparation method thereof, for solving existing capacitance touch
In screen, due to the less problem of the higher caused viewing area size of the resistance of contact conductor.
The embodiment of the present application provides a kind of capacitive touch screen, including：Substrate, the first conductive layer, the first insulating barrier and
Second conductive layer, wherein：
First conductive layer is formed on the substrate, includes the first lead and the second lead；
First insulating barrier is covered in first conductive layer, includes the first perforate and the second perforate；
Second conductive layer is formed on first insulating barrier, includes the 3rd lead and the 4th lead；
First lead is connected by first perforate with the 3rd lead, and second lead passes through described
Two perforates are connected with the 4th lead.
Preferably, first conductive layer also includes the first touch control electrode, and first touch control electrode is drawn with described first
Line connects；
Second conductive layer also includes second touch control electrode, and the second touch control electrode is connected with the 4th lead.
Preferably, first conductive layer also includes building bridge；
First insulating barrier also includes the 3rd perforate；
Second conductive layer also includes the first touch control electrode and second touch control electrode；
First touch control electrode is connected by the 3rd perforate and described build bridge, and is connected with the 3rd lead,
The second touch control electrode is connected with the 4th lead.
Preferably, first lead or the number of the 3rd lead being connected with the first touch control electrode each described
For 1, second lead or the number of the 4th lead being connected with second touch control electrode each described are 1；Or,
First lead or the number of the 3rd lead being connected with the first touch control electrode each described are 2, with
Second lead of each second touch control electrode connection or the number of the 4th lead are 2.
Preferably, first touch control electrode is emission electrode, and the second touch control electrode is receiving electrode, described first
Lead and the 3rd lead are transmitting lead, and second lead and the 4th lead are to receive lead；Or,
First touch control electrode is receiving electrode, and the second touch control electrode is emission electrode, first lead with
And the 3rd lead is receives lead, second lead and the 4th lead are transmitting lead.
Preferably, first lead, second lead, the 3rd lead and the 4th lead are led to be transparent
Electric material.
The embodiment of the present application provides a kind of preparation method of capacitive touch screen, including：
The first conductive layer is formed on substrate；
First conductive layer is etched, forms the first lead and the second lead；
The first insulating barrier is deposited on first conductive layer；
First insulating barrier is etched, forms the first perforate and the second perforate；
The second conductive layer is formed on first insulating barrier；
Second conductive layer is etched, the 3rd lead is formed and the 4th lead, the 3rd lead leads to
Cross first perforate to be connected with first lead, the 4th lead is connected by second perforate and second lead
Connect.
Preferably, the first touch control electrode, first touch-control are formed when being etched to first conductive layer
Electrode is connected with first lead；And
Second touch control electrode, the second touch control electrode and institute are formed when being etched to second conductive layer
State the connection of the 4th lead.
Preferably, formed and built bridge when being etched to first conductive layer；
The 3rd perforate is formed when being etched to first insulating barrier；
The first touch control electrode and second touch control electrode are formed when being etched to second conductive layer, it is described
First touch control electrode is connected by the 3rd perforate and described build bridge, and is connected with the 3rd lead, second touch-control
Electrode is connected with the 4th lead.
Preferably, first touch control electrode is emission electrode, and the second touch control electrode is receiving electrode, described first
Lead and the 3rd lead are transmitting lead, and second lead and the 4th lead are to receive lead；Or,
First touch control electrode is receiving electrode, and the second touch control electrode is emission electrode, first lead with
And the 3rd lead is receives lead, second lead and the 4th lead are transmitting lead.
Above-mentioned at least one technical scheme that the embodiment of the present application uses can reach following beneficial effect：
The capacitive touch screen that the embodiment of the present application provides, including substrate, the first conductive layer, the first insulating barrier and second
Conductive layer, wherein, include the first lead and the second lead in the first conductive layer, in the first insulating barrier comprising the first perforate and
Second perforate, the 3rd lead and the 4th lead are included in the second conductive layer, and, the first lead is drawn by the first perforate with the 3rd
Line is connected, and the second lead is connected by the second perforate with the 4th lead.By in the first conductive layer in capacitive touch screen
First lead and the second lead are set, the 3rd lead and the 4th lead be set in the second conductive layer, and the first lead with
3rd lead is connected, and the second lead is connected with the 4th lead, so, can reduce the resistance of lead by increasing the thickness of lead
It is anti-, it is thereby achieved that the design of the capacitive touch screen of larger viewing area, is effectively increased capacitive touch screen viewing area
Size.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Schematic description and description please is used to explain the application, does not form the improper restriction to the application.In the accompanying drawings：
Fig. 1 is the structure top view of capacitive touch screen of the prior art；
Fig. 2 is a kind of structural side view for capacitive touch screen that the embodiment of the present application provides；
Fig. 3 is the structural side view for another capacitive touch screen that the embodiment of the present application provides；
Fig. 4 is a kind of structure top view for capacitive touch screen that the embodiment of the present application provides；
Fig. 5 is the structure top view for another capacitive touch screen that the embodiment of the present application provides；
Fig. 6 is a kind of schematic flow sheet of the preparation method for capacitive touch screen that the embodiment of the present application provides；
Fig. 7 is a kind of structure top view for first conductive layer that the embodiment of the present application provides；
Fig. 8 is the structure top view of a kind of first perforate and the second perforate that the embodiment of the present application provides；
Fig. 9 is a kind of structure top view for second conductive layer that the embodiment of the present application provides；
Figure 10 is the structure top view for the conductive layer of another kind first that the embodiment of the present application provides；
Figure 11 is a kind of structure top view for 3rd perforate that the embodiment of the present application provides；
Figure 12 is the structure top view for the conductive layer of another kind second that the embodiment of the present application provides.
Embodiment
Technical scheme is clearly and completely retouched with reference to the application specific embodiment and corresponding accompanying drawing
State.Obviously, described embodiment is only some embodiments of the present application, rather than whole embodiments.Based in the application
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to the scope of the application protection.
In the embodiment of the present application, first lead, second lead, the 3rd lead and the 4th lead
It can be located in the viewing area of the capacitive touch screen, first touch control electrode can be with the second touch control electrode
It is mutually perpendicular to.Wherein, first touch control electrode can be emission electrode, and first lead and the 3rd lead can be with
It is transmitting lead, then, the second touch control electrode is receiving electrode, and second lead and the 4th lead draw for reception
Line；Or first touch control electrode can be receiving electrode, first lead and the 3rd lead draw for reception
Line, then, the second touch control electrode are emission electrode, and second lead and the 4th lead are transmitting lead.
First lead, second lead, the 3rd lead and the 4th lead can select transparent lead
Electric material, include but is not limited to：ITO (Chineses：Tin indium oxide, English name：Indium Tin Oxide), AgNW (receives
Rice silver wire), graphene, etc..In this manner it is achieved that the Rimless of the capacitive touch screen is shown.
The material of first touch control electrode and the second touch control electrode can be with first lead, described second
The material of lead, the 3rd lead and the 4th lead is identical.
The substrate can be glass substrate, the material of first insulating barrier can be silicon nitride material or
Silica material.
Below in conjunction with accompanying drawing, the technical scheme that each embodiment of the application provides is described in detail.
Embodiment 1
Fig. 2 is a kind of structural side view for capacitive touch screen that the embodiment of the present application provides.The capacitive touch screen
As described below.
Capacitive touch screen shown in Fig. 2 can include substrate 21, and the first conductive layer 22, the first insulating barrier 23, second are led
The insulating barrier 25 of electric layer 24 and second, wherein：
First conductive layer 22 is formed on the substrate 21, and first insulating barrier 23 covers first conductive layer
22, second conductive layer 24 is formed on first insulating barrier 23, and it is conductive that second insulating barrier 25 covers described second
Layer 24.
In the embodiment of the present application, first conductive layer 22 can include the first touch control electrode 221 (first described in Fig. 2
Touch control electrode 221 includes five the first touch control electrode units, and five the first touch control electrode units are sequentially connected, and forms described
One touch control electrode 221), the first lead 222 and the second lead (not shown in Fig. 2), wherein, in first conductive layer 22
In, first touch control electrode 221 is connected with first lead 222.
First insulating barrier 23 can include several first perforates (not shown in Fig. 2), and several second are opened
Hole (not shown in Fig. 2), wherein, the number of first perforate can be identical with the number of first lead 222, and described
The number of two perforates can be identical with the number of second lead, and the position of first perforate can be with first lead
222 position is corresponding, and the position of second perforate can be corresponding with the position of second lead.
Second conductive layer 24 can include second touch control electrode 241, and (second touch control electrode 241 described in Fig. 2 includes
Four second touch control electrode units, four second touch control electrode units are sequentially connected, and form the second touch control electrode 241),
3rd lead 242 and the 4th lead (not shown in Fig. 2), wherein, the second touch control electrode 241 connects with the 4th lead
Connect.
The material of second insulating barrier 25 can be identical with the material of first insulating barrier 23.
The embodiment of the present application, in second conductive layer 24, the 3rd lead 242 can pass through first perforate
It is connected (as shown in Figure 2) with first lead 222, the 4th lead can be drawn by second perforate and described second
Line is connected (not shown in Fig. 2), i.e., described first touch control electrode 221 and first lead 222 and the 3rd lead 242
Connection, the second touch control electrode 241 are connected with the 4th lead and second lead.
So, by by first lead 222 in first conductive layer 22 and second conductive layer 24
3rd lead 242 connects, and by second lead in first conductive layer 22 and second conductive layer 24
The 4th lead connection, the resistance of lead can be reduced by way of increasing lead thicknesses, compared to prior art
Speech, due to reducing the resistance for the lead being connected in capacitive touch screen with first touch control electrode 221, and with described the
The resistance of the lead of two touch control electrodes 241 connection, it is thereby achieved that the viewing area of large-size.
In the embodiment of the present application, it can also include and binding in first insulating barrier 23 and second insulating barrier 25
Perforate corresponding to region, wherein, the binding region can be by first lead 222, second lead, the described 3rd
The region that lead 242 and the 4th lead are attached with driving chip IC, the driving chip IC can be used for driving
The capacitive touch screen.
Specifically, the perforate corresponding with binding region in first insulating barrier 23, can be by first lead
222 and second lead lead to the binding region, it is corresponding with binding region in second insulating barrier 25
Perforate, the 3rd lead 242 and the 4th lead can be led to the binding region.
The capacitive touch screen that the embodiment of the present application provides, the first touch control electrode, the first lead are included in the first conductive layer
And second lead, the first touch control electrode are connected with the first lead；Corresponding with the first lead first is included in first insulating barrier
Perforate, and the second perforate corresponding with the second lead；Second touch control electrode, the 3rd lead and the are included in second conductive layer
Four leads, second touch control electrode are connected with the 4th lead, and the 3rd lead is connected by the first perforate with the first lead, and the 4th draws
Line is connected by the second perforate with the second lead.So, by setting first in the first conductive layer in capacitive touch screen
Lead and the second lead, the 3rd lead and the 4th lead, and the first lead and the 3rd lead are set in the second conductive layer
It is connected, the second lead is connected with the 4th lead, can reduce the impedance of lead, therefore, Ke Yishi by increasing the thickness of lead
The design of the capacitive touch screen of existing larger viewing area, it is effectively increased the size of capacitive touch screen viewing area.
Embodiment 2
Fig. 3 is the structural side view for another capacitive touch screen that the embodiment of the present application provides.The capacitance touch
Screen is as described below.
Capacitive touch screen shown in Fig. 3 can include substrate 31, and the first conductive layer 32, the first insulating barrier 33, second are led
The insulating barrier 35 of electric layer 34 and second, wherein：
First conductive layer 32 is formed on the substrate 31, and first insulating barrier 33 covers first conductive layer
32, second conductive layer 34 is formed on first insulating barrier 33, and it is conductive that second insulating barrier 35 covers described second
Layer 34.
In the embodiment of the present application, first conductive layer 32 can draw comprising the 321, first lead 322 of bridge formation and second
Line (not shown in Fig. 3), wherein, the bridge formation 321 can be the bridge formation with electric action.
First insulating barrier 33 can include several first perforates (not shown in Fig. 3), several the second perforate (figures
Not shown in 3), and several the 3rd perforates (not shown in Fig. 3), wherein, the number of first perforate can with it is described
The number of first lead 322 is identical, and the number of second perforate can be identical with the number of second lead, and the described 3rd
The number of perforate can be twice of the number of the bridge formation 321, and the position of first perforate can be with first lead
322 position is corresponding, and the position of second perforate can be corresponding with the position of second lead, the 3rd perforate
Position can with it is described build bridge 321 position it is corresponding.
Second conductive layer 34 can include the first touch control electrode 341, second touch control electrode 342, the 3rd lead 343 with
And the 4th lead (not shown in Fig. 3), wherein, first touch control electrode 341 is connected with the 3rd lead 343, and described
Two touch control electrodes 342 are connected (not shown in Fig. 3) with the 4th lead.
The material of second insulating barrier 35 can be identical with the material of first insulating barrier 33.
The embodiment of the present application, in second conductive layer 34, first touch control electrode 341 includes five the first touch-controls
Electrode unit, the two neighboring first touch control electrode unit are connected by the 3rd perforate with the bridge formation 321, the frame
Bridge 321 can connect two adjacent the first touch control electrode units, five first touch control electrodes being sequentially connected
Unit forms first touch control electrode 341, and the 3rd lead 343 can pass through first perforate and first lead
322 connections (as shown in Figure 3), the 4th lead can be connected (in Fig. 3 not by second perforate with second lead
Show), i.e., described first touch control electrode 341 is connected with the 3rd lead 343 and first lead 322, and described second
Touch control electrode 342 is connected with the 4th lead and second lead.
So, by by first lead 332 in first conductive layer 32 and second conductive layer 34
3rd lead 343 connects, and by second lead in first conductive layer 32 and second conductive layer 34
The 4th lead connection, the resistance of lead can be reduced by way of increasing lead thicknesses, compared to prior art
Speech, due to reducing the resistance for the lead being connected in capacitive touch screen with first touch control electrode 341, and with described the
The resistance of the lead of two touch control electrodes 342 connection, it is thereby achieved that the viewing area of large-size.
In the embodiment of the present application, can also include in first insulating barrier 33 and second insulating barrier 35 with tying up
Determine perforate corresponding to region, wherein, the binding region can be by first lead 322, second lead, described
The region that three leads 343 and the 4th lead are attached with driving chip IC, the driving chip IC can be used for driving
Move the capacitive touch screen.
Specifically, the perforate corresponding with binding region in first insulating barrier, can be by first lead 322
And second lead leads to the binding region, the perforate corresponding with binding region in second insulating barrier,
3rd lead 343 and the 4th lead can be led to the binding region.
The capacitive touch screen that the embodiment of the present application provides, comprising building bridge in the first conductive layer, the first lead and second
Lead；Include the first perforate corresponding with the first lead in first insulating barrier, the second perforate corresponding with the second lead and with
3rd perforate corresponding to bridge formation；The first touch control electrode, second touch control electrode, the 3rd lead and the 4th are included in second conductive layer
Lead, wherein, the first touch control electrode is connected with the 3rd lead, and by the 3rd perforate with build bridge connect, second touch control electrode with
4th lead is connected, and the 3rd lead is connected by the first perforate with the first lead, and the 4th lead is drawn by the second perforate and second
Line connects.So, by setting the first lead and the second lead in the first conductive layer in capacitive touch screen, second
3rd lead and the 4th lead are set in conductive layer, and the first lead is connected with the 3rd lead, the second lead and the 4th lead
It is connected, the impedance of lead can be reduced by increasing the thickness of lead, it is thereby achieved that the capacitive touch of larger viewing area
The design of screen is touched, is effectively increased the size of capacitive touch screen viewing area.
Embodiment 3
Fig. 4 is a kind of structure top view for capacitive touch screen that the embodiment of the present application provides.Wherein, Fig. 4 can be Fig. 2
The structure top view of capacitive touch screen shown in the structure top view or Fig. 3 of shown capacitive touch screen.This Shen
Please embodiment can be illustrated by taking the structure top view of the capacitive touch screen shown in Fig. 2 as an example.
Capacitive touch screen shown in Fig. 4, four the first touch control electrodes of row and four row second touch control electrodes can be included,
First touch control electrode described in per a line can represent first touch control electrode 41, and each row second touch control electrode can generation
One second touch control electrode 42 of table, first touch control electrode 41 are mutually perpendicular to the second touch control electrode 42, each institute
State the first touch control electrode 41 and include five the first touch control electrode units, each described first touch control electrode unit connects successively
Connect, each described second touch control electrode 42 includes five second touch control electrode units, each described second touch control electrode
Unit is sequentially connected.
Wherein, each described first touch control electrode 41 is connected with first lead 43 respectively, and each described second
Touch control electrode 42 be connected respectively with the 4th lead 44 (i.e. for each described first touch control electrode 41, its connect
First lead 43 be single lead, for each described second touch control electrode 42, what it was connected the described 4th draws
Line 44 is single lead), each described first lead 43 and each described 4th lead 44 can lead to binding region,
Each described first lead 43 can be connected by the binding region with the 4th lead 44 each described with driving chip IC.
It should be noted that in Fig. 4, each first touch control electrode unit that first touch control electrode 41 includes and
Each second touch control electrode unit that the second touch control electrode 42 includes is rhombus or triangle, in actual applications, is gone back
Can be other shapes, the embodiment of the present application is not specifically limited.
Embodiment 4
Fig. 5 is the structure top view for another capacitive touch screen that the embodiment of the present application provides.Wherein, Fig. 5 can be
The structure top view of capacitive touch screen shown in the structure top view or Fig. 3 of capacitive touch screen shown in Fig. 2.
The embodiment of the present application can illustrate by taking the structure top view of the capacitive touch screen shown in Fig. 2 as an example.
Capacitive touch screen shown in Fig. 5, four the first touch control electrodes of row and four row second touch control electrodes can be included,
First touch control electrode described in per a line can represent first touch control electrode 51, and each row second touch control electrode can generation
One second touch control electrode 52 of table, first touch control electrode 51 are mutually perpendicular to the second touch control electrode 52, each institute
State the first touch control electrode 51 and include five the first touch control electrode units, each described first touch control electrode unit connects successively
Connect, each described second touch control electrode 52 includes five second touch control electrode units, each described second touch control electrode
Unit is sequentially connected.
Wherein, each described first touch control electrode 51 is connected with two the first leads 53 respectively, and each described second
Touch control electrode 52 be connected respectively with two the 4th leads 54 (i.e. for each described first touch control electrode 51, its connect
First lead 53 be double lead, for each described second touch control electrode 52, what it was connected the described 4th draws
Line 54 is double lead), each described first lead 53 and each described 4th lead 54 can lead to binding region,
Each described first lead 53 can be connected by the binding region with the 4th lead 54 each described with driving chip IC.
In Fig. 5, each first touch control electrode unit and second touch-control that first touch control electrode 51 includes
Each second touch control electrode unit that electrode 52 includes is rhombus or triangle, in actual applications, can also be other shapes
Shape, the embodiment of the present application are not specifically limited.
It should be noted that the structure top view of the capacitive touch screen shown in Fig. 5, with the capacitance touch shown in Fig. 4
The difference of the structure top view of screen is, first lead 53 being connected in Fig. 5 with the first touch control electrode 51 each described
For double lead, the 4th lead 54 being connected in Fig. 5 with second touch control electrode each described 52 for double lead (in Fig. 5 not
The double lead is shown).
Capacitive touch screen shown in Fig. 5 is compared with the capacitive touch screen shown in Fig. 4, due to each described first
First lead 53 that touch control electrode 51 connects and what is be connected with second touch control electrode each described 52 the described 4th draw
Line 54 is double lead, therefore, can further reduce the resistance of lead, so realize that capacitive touch screen is larger sized can
Viewed area.
But first lead 53 by being connected with the first touch control electrode 51 each described and with each institute
The 4th lead 54 for stating the connection of second touch control electrode 52 is double lead, therefore, meeting relative increase capacitive touch screen
Frame.In actual applications, can determine according to the actual requirements respectively with the first touch control electrode 51 each described and with it is every
First lead 53 and the 4th lead 54 that one second touch control electrode 52 connects, which are that single lead is still double, to be drawn
Line.
It is single lead to the first lead, the 4th lead that above-described embodiment 3 and 4, which is respectively, and the first lead, the 4th lead are double
Lead has made detailed elaboration, in addition, the 3rd lead, the second lead are the situation such as embodiment 3 of single lead, the 3rd lead, the
Two leads are the situation such as embodiment 4 of double lead, be will not be repeated here.
Embodiment 5
Fig. 6 is a kind of schematic flow sheet of the preparation method for capacitive touch screen that the embodiment of the present application provides.The side
Method is as described below.
Step 601：The first conductive layer is formed on substrate.
Step 602：First conductive layer is etched, forms the first lead and the second lead.
Step 603：The first insulating barrier is deposited on first conductive layer.
Step 604：First insulating barrier is etched, forms the first perforate and the second perforate.
In step 604, the number of first perforate can be identical with the number of first lead, and described second opens
The number in hole can be identical with the number of second lead, and the position of first perforate can be with the position of first lead
Put corresponding, the position of second perforate can be corresponding with the position of second lead.
Step 605：The second conductive layer is formed on first insulating barrier.
Step 606：Second conductive layer is etched, forms the 3rd lead and the 4th lead.
In step 606, the 3rd lead is connected by first perforate with first lead, and the described 4th draws
Line is connected by second perforate with second lead.
So, by setting the first lead and the second lead in the first conductive layer in capacitive touch screen,
3rd lead and the 4th lead are set in two conductive layers, and the first lead is connected with the 3rd lead, the second lead draws with the 4th
Line is connected, and can reduce the impedance of lead by increasing the thickness of lead, therefore, it is visual can be effectively increased capacitive touch screen
The size in region.
In the embodiment of the present application, it is etched to second conductive layer, forms the 3rd lead and the 4th
After lead, the second insulating barrier can also be deposited on second conductive layer.
In another embodiment that the application provides, in step 602, it is etched to first conductive layer
When, the first touch control electrode can also be formed, wherein, first touch control electrode can be connected with first lead；In step
In 606, when being etched to second conductive layer, second touch control electrode can also be formed, wherein, described second touches
Control electrode can be connected with the 4th lead.So, the capacitance touch shown in Fig. 2, Fig. 4 and/or Fig. 5 can be prepared
Screen.
Specifically：
In step 602, first conductive layer is etched, first touch control electrode, institute can be formed
The first lead and second lead are stated, wherein, in first conductive layer, first lead can be with described first
Touch control electrode connects, and second lead can be in suspended state.
Fig. 7 is a kind of structure top view for first conductive layer that the embodiment of the present application provides.
As shown in fig. 7, when being etched to first conductive layer, four the first touch-control electricity can be formed
First lead 72 of pole 71, four, and four second leads 73, wherein, each described first touch control electrode 71
Five the first touch control electrode units can be included, five the first touch control electrode units are sequentially connected, middle three described the
One touch control electrode unit can be rhombus, and two, both ends the first touch control electrode unit can be triangle.
It can be seen from figure 7 that each described first touch control electrode 71 is connected with first lead 72 respectively,
Each described second lead 73 may be at suspended state.
In the embodiment of the present application, when being etched to first insulating barrier, can be formed and described first
First perforate corresponding to lead 72, and second perforate corresponding with second lead 73.
As shown in figure 8, for two kinds of perforate modes of first perforate and second perforate, (one described first is opened
Hole can correspond to first lead, and second perforate can correspond to second lead), two kinds of perforates
The difference of mode is the of different sizes of perforate.In actual applications, can be according to first lead and described
The material of two leads determines the perforate size of first perforate and second perforate respectively, if for example, described first draws
Line and second lead are easily broken lead, then, the first perforate mode shown in Fig. 8 can be selected to obtain described
One perforate and second perforate.
It should be noted that when being etched to first insulating barrier, can also be formed and binding region pair
The perforate (mode of perforate can be identical with the one of which perforate mode shown in Fig. 8) answered, wherein, the binding region can be with
It is the region for being connected first lead and second lead with driving chip IC, the driving chip IC can be used for
Drive the capacitive touch screen.
As shown in fig. 7, each described first lead 72 and each described second lead 73 can by with binding
Perforate is drawn to binding region corresponding to region.
In step 606, when being etched to second conductive layer, second touch control electrode, can be formed
Three leads and the 4th lead, wherein, in second conductive layer, the 4th lead can be with the second touch control electrode
Connection, the 3rd lead can be in suspended state.
Fig. 9 is a kind of structure top view for second conductive layer that the embodiment of the present application provides；
As shown in figure 9, when being etched to second conductive layer, four the second touch-control electricity can be formed
The 3rd lead 92 of pole 91, four, and four the 4th leads 93, wherein, each described second touch control electrode 91
Five second touch control electrode units can be included, five second touch control electrode units are sequentially connected, middle two described the
Two touch control electrode units can be rhombus, and two, the both ends second touch control electrode unit can be triangle.
It can be seen in figure 9 that each described second touch control electrode 91 is connected with the 4th lead 93 respectively,
Each described 3rd lead 92 may be at suspended state.
In the embodiment of the present application, when performing etching processing to second insulating barrier, it can also form and bind area
Perforate corresponding to domain (mode of perforate can be identical with the one of which perforate mode shown in Fig. 8), wherein, the binding region
Can be the region for being connected the 3rd lead and the 4th lead with driving chip IC, the driving chip IC can be with
For driving the capacitive touch screen.
As shown in figure 9, each described 3rd lead 92 and each described 4th lead 93 can by with binding
Perforate is drawn to binding region corresponding to region.
The preparation method for the capacitive touch screen that the embodiment of the present application provides, is etched to be formed to the first conductive layer
First touch control electrode, the first lead and the second lead, the first touch control electrode are connected with the first lead；First insulating barrier is carried out
Etching process forms the first perforate corresponding with the first lead, and the second perforate corresponding with the second lead；It is conductive to second
Layer is etched to form second touch control electrode, the 3rd lead and the 4th lead, and second touch control electrode connects with the 4th lead
Connect, and the 3rd lead is connected by the first perforate with the first lead, the 4th lead is connected by the second perforate with the second lead.It is logical
First lead and the second lead are set in the first conductive layer crossed in capacitive touch screen, is set in the second conductive layer
Three leads and the 4th lead, and the first lead is connected with the 3rd lead, the second lead is connected with the 4th lead, so, can be with
Thickness by increasing lead reduces the impedance of lead, therefore, realizes the design of the capacitive touch screen of larger viewing area, can
To be effectively increased the size of capacitive touch screen viewing area.
In the another embodiment that the application provides, in step 602, it is etched to first conductive layer
When, bridge formation can also be formed；In step 604, when being etched to first insulating barrier, can also be formed some
3rd perforate；In step 606, when being etched to second conductive layer, the first touch control electrode can also be formed
And second touch control electrode, first touch control electrode can by the 3rd perforate with it is described build bridge connect, and with it is described
3rd lead is connected, and the second touch control electrode can be connected with the 4th lead.So, Fig. 3, Fig. 4 can be prepared
And/or the capacitive touch screen shown in Fig. 5.
Specifically：
In step 602, when being etched to first conductive layer, bridge formation can be formed, described first drawn
Line and second lead, wherein, in first conductive layer, the bridge formation can be in suspended state, and described first draws
Line can be in suspended state, and second lead can be in suspended state.
Figure 10 is the structure top view for the conductive layer of another kind first that the embodiment of the present application provides.
As shown in Figure 10, when being etched to first conductive layer, four rows can be formed and built bridge, described in four
First lead 102, and four second leads 103, wherein, four bridge formations 101 can be included by being built bridge per a line.
It can be seen from fig. 10 that each described builds bridge 101 is in suspended state, each described first lead 102 with
And each described second lead 103 may be at suspended state.
In step 604, when being etched to first insulating barrier, if can be formed some first perforates,
Dry second perforate and some 3rd perforates.Wherein, the number of the 3rd perforate can be twice of the number of the bridge formation.
Wherein, the perforate mode of first perforate and second perforate can be two kinds of perforate sides shown in Fig. 8
One of which in formula.In actual applications, can also be distinguished according to the material of first lead and second lead
Determine the perforate mode of first perforate and second perforate.
The perforate mode of 3rd perforate can be the perforate mode shown in Figure 11.Can be described in one shown in Figure 11
Perforate corresponding to bridge formation 101 (i.e. one corresponding two the 3rd perforates of building bridge).
In the embodiment of the present application, when performing etching processing to first insulating barrier, it can also form and bind area
Perforate corresponding to domain, wherein, the binding region can be by first lead and second lead and driving chip
The region of IC connections, the driving chip IC can be used for driving the capacitive touch screen.
As shown in Figure 10, each described first lead 102 and each described second lead 103 can be by with tying up
Determine perforate corresponding to region and be drawn to binding region.
In step 606, when being etched to second conductive layer, the first touch control electrode, can be formed
Two touch control electrodes, the 3rd lead and the 4th lead, wherein, first touch control electrode can pass through the 3rd perforate and institute
Bridge formation connection is stated, and is connected with the 3rd lead, the second touch control electrode can be connected with the 4th lead.
Figure 12 is the structure top view for the conductive layer of another kind second that the embodiment of the present application provides.
As shown in figure 12, when being etched to second conductive layer, four first touch-controls can be formed
121, four, electrode, 122, four the 3rd leads 123 of the second touch control electrode, and four the 4th leads 124,
Wherein, each described first touch control electrode 121 can include five the first touch control electrode units, each described second touch-control
Electrode 122 can include five second touch control electrode units, and five the first touch control electrode units are sequentially connected, described in five
Second touch control electrode unit is sequentially connected, and middle three the first touch control electrode units can be rhombus, described in two, both ends
First touch control electrode unit can be triangle, and middle three second touch control electrode units can also be rhombus, both ends two
The individual second touch control electrode unit can be triangle.
In figure 12 it can be seen that each described first touch control electrode 121 connects with the 3rd lead 123 respectively
Connect, each described second touch control electrode 122 is connected with the 4th lead 124 respectively.
In the embodiment of the present application, when performing etching processing to second insulating barrier, it can also form and bind area
Perforate corresponding to domain (mode of perforate can be identical with the one of which perforate mode shown in Fig. 8), wherein, the binding region
Can be the region for being connected the 3rd lead and the 4th lead with driving chip IC, the driving chip IC can be with
For driving the capacitive touch screen.
As shown in figure 12, each described 3rd lead 123 and each described 4th lead 124 can be by with tying up
Determine perforate corresponding to region and be drawn to binding region.
The preparation method for the capacitive touch screen that the embodiment of the present application provides, is etched to be formed to the first conductive layer
Build bridge, the first lead and the second lead；First insulating barrier is etched and to form corresponding with the first lead first and opens
Hole, the second perforate corresponding with the second lead and the 3rd perforate corresponding with bridge formation；Second conductive layer is etched
The first touch control electrode, second touch control electrode, the 3rd lead and the 4th lead are formed, the first touch control electrode connects with the 3rd lead
Connect, and connected by the 3rd perforate with building bridge, second touch control electrode is connected with the 4th lead, the 3rd lead by the first perforate and
First lead is connected, and the 4th lead is connected by the second perforate with the second lead.Led by first in capacitive touch screen
First lead and the second lead are set in electric layer, the 3rd lead and the 4th lead, and first are set in the second conductive layer
Lead is connected with the 3rd lead, and the second lead is connected with the 4th lead, so, can reduce lead by increasing the thickness of lead
Impedance, it is thereby achieved that the design of the capacitive touch screen of larger viewing area, it is visual to be effectively increased capacitive touch screen
The size in region.
It will be understood by those skilled in the art that although preferred embodiments of the present invention have been described, but skill in the art
Art personnel once know basic creative concept, then other change and modification can be made to these embodiments.It is so appended
Claim is intended to be construed to include preferred embodiment and falls into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the model of various changes and modification without departing from the present invention to the present invention
Enclose.So, if these modifications and variations of the present invention belong within the scope of the claims in the present invention and its equivalent technologies, then
The present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of capacitive touch screen, it is characterised in that conductive including substrate, the first conductive layer, the first insulating barrier and second
Layer, wherein：
First conductive layer is formed on the substrate, includes the first lead and the second lead；
First insulating barrier is covered in first conductive layer, includes the first perforate and the second perforate；
Second conductive layer is formed on first insulating barrier, includes the 3rd lead and the 4th lead；
First lead is connected by first perforate with the 3rd lead, and second lead is opened by described second
Hole is connected with the 4th lead.
2. capacitive touch screen as claimed in claim 1, it is characterised in that
First conductive layer also includes the first touch control electrode, and first touch control electrode is connected with first lead；
Second conductive layer also includes second touch control electrode, and the second touch control electrode is connected with the 4th lead.
3. capacitive touch screen as claimed in claim 1, it is characterised in that
First conductive layer also includes building bridge；
First insulating barrier also includes the 3rd perforate；
Second conductive layer also includes the first touch control electrode and second touch control electrode；
First touch control electrode is connected by the 3rd perforate and described build bridge, and is connected with the 3rd lead, described
Second touch control electrode is connected with the 4th lead.
4. the capacitive touch screen as described in Claims 2 or 3, it is characterised in that
First lead or the number of the 3rd lead being connected with the first touch control electrode each described are 1, and each
Second lead of the individual second touch control electrode connection or the number of the 4th lead are 1；Or,
First lead or the number of the 3rd lead being connected with the first touch control electrode each described are 2, and each
The number of the 4th lead is 2 described in second lead of the individual second touch control electrode connection.
5. capacitive touch screen as claimed in claim 4, it is characterised in that
First touch control electrode is emission electrode, and the second touch control electrode is receiving electrode, first lead and institute
It is reception lead that the 3rd lead, which is stated, as transmitting lead, second lead and the 4th lead；Or,
First touch control electrode is receiving electrode, and the second touch control electrode is emission electrode, first lead and institute
The 3rd lead is stated to receive lead, second lead and the 4th lead as transmitting lead.
6. capacitive touch screen as claimed in claim 5, it is characterised in that
First lead, second lead, the 3rd lead and the 4th lead are transparent conductive material.
A kind of 7. preparation method of capacitive touch screen, it is characterised in that including：
The first conductive layer is formed on substrate；
First conductive layer is etched, forms the first lead and the second lead；
The first insulating barrier is deposited on first conductive layer；
First insulating barrier is etched, forms the first perforate and the second perforate；
The second conductive layer is formed on first insulating barrier；
Second conductive layer is etched, the 3rd lead is formed and the 4th lead, the 3rd lead passes through institute
State the first perforate to be connected with first lead, the 4th lead is connected by second perforate with second lead.
8. the preparation method of capacitive touch screen as claimed in claim 7, it is characterised in that
Form the first touch control electrode when being etched to first conductive layer, first touch control electrode and described the
One lead connects；And
Form second touch control electrode when being etched to second conductive layer, the second touch control electrode and described the
Four leads connect.
9. the preparation method of capacitive touch screen as claimed in claim 7, it is characterised in that
Formed and built bridge when being etched to first conductive layer；
The 3rd perforate is formed when being etched to first insulating barrier；
Form the first touch control electrode and second touch control electrode when being etched to second conductive layer, described first
Touch control electrode is connected by the 3rd perforate and described build bridge, and is connected with the 3rd lead, the second touch control electrode
It is connected with the 4th lead.
10. the preparation method of the capacitive touch screen as described in any one of claim 8 or 9, it is characterised in that
First touch control electrode is emission electrode, and the second touch control electrode is receiving electrode, first lead and institute
It is reception lead that the 3rd lead, which is stated, as transmitting lead, second lead and the 4th lead；Or,
First touch control electrode is receiving electrode, and the second touch control electrode is emission electrode, first lead and institute
The 3rd lead is stated to receive lead, second lead and the 4th lead as transmitting lead.
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Application publication date: 20171110 Assignee: Yungu (Gu'an) Technology Co., Ltd.|Bazhou Yungu Electronic Technology Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Kunshan Guo Xian Photoelectric Co., Ltd. Contract record no.: X2019990000156 Denomination of invention: Capacitive touch screen and preparing method thereof License type: Common License Record date: 20191030 |
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Effective date of registration: 20191204 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Applicant after: Guangzhou Guoxian Technology Co., Ltd Address before: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou, 4 Applicant before: Kunshan Guo Xian Photoelectric Co., Ltd. |