CN108717339A - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN108717339A CN108717339A CN201810474813.2A CN201810474813A CN108717339A CN 108717339 A CN108717339 A CN 108717339A CN 201810474813 A CN201810474813 A CN 201810474813A CN 108717339 A CN108717339 A CN 108717339A
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- Prior art keywords
- touch
- main part
- control sensing
- lateral
- extension portion
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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
- 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
- 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
Abstract
The present invention provides a kind of capacitive touch screen, by carrying out special design to touch-control sensing electrode and touch drive electrode, the lateral capacitance in several lateral capacitive regions around mutual capacitance can be increased, promote the electric field strength of touch screen surface, to enhance the original signal of touch-control processor acquisition, signal-to-noise ratio is improved, and then promotes touch-control sensitivity, optimizes touch experience.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of capacitive touch screens.
Background technology
With the rapid development of display technology, touch screen (Touch Screen Panel) has gradually spread the life of people
In work.Currently, touch screen can be divided into according to composed structure：External hanging type touch screen (Add on Mode Touch Panel) covers
Cap surface formula touch screen (On Cell Touch Panel) and In-cell touch panel (In Cell Touch Panel).Its
In, external hanging type touch screen is separately to produce touch screen and liquid crystal display (Liquid Crystal Display, LCD), so
It is bonded afterwards together into the liquid crystal display with touch function.Covering surface-type touch screen is the color film in liquid crystal display
Substrate directly makes touch-control component backwards to the side of liquid crystal layer, can subtract relative to external hanging type touch screen covering surface-type touch screen
The thickness of thin entire touch screen enhances light transmission rate.
Capacitive touch screen is to incude a kind of touch screen technology to work using the electric current of human body, is a kind of relatively normal
The touch screen way of realization seen, is widely used on the electronic products such as mobile phone, tablet computer, the work of the capacitive touch screen
Principle approximately as：
Row electrode and row electrode are provided in capacitive touch screen, between the row electrode and the row electrode mutually absolutely
Edge, when human body touch screen, due to there are electric field, being formed between the row electrode, row electrode in finger and touch screen in human body
Coupled capacitor；Due to the capacitance variations of touch point, there is the induced current for flowing to touch point in the row electrode and row electrode,
And faradic power is inversely proportional at a distance from finger to touch screen boundary, passes through the biography of the row electrode and row electrode both ends
Sensor measures faradic size, you can the accurate position for calculating touch point.
However, existing capacitive touch screen is since touch-control original signal is smaller, noise is smaller, leads to touch-control effect not
Enough sensitive, to bring bad usage experience to consumer, industry generally use promotes the method for chip ability to increase at present
The touch-control original signal that strong processor obtains, however the technical difficulty of this method is larger, cost is higher, therefore the present invention proposes one
Kind enhances the touch-control original signal of processor acquisition by optimizing the method that the pattern (pattern) of touch control electrode designs, and carries
High s/n ratio, and then improve the reaction sensitivity of touch screen.
Invention content
The purpose of the present invention is to provide a kind of capacitive touch screens, have higher signal-to-noise ratio and the spirit of higher touch-control
Sensitivity.
To achieve the above object, the present invention provides a kind of capacitive touch screen, including underlay substrate, the touch-control being stacked
Drive electrode layer, the first insulating layer, touch-control sensing electrode layer, second insulating layer；
In the touch drive electrode layer be equipped with touch drive electrode, the touch drive electrode include the first main part with
And it is connected to first lateral extension portion at first main part both ends；Touch-control sensing electricity is equipped in the touch-control sensing electrode layer
Pole, the touch-control sensing electrode include the second main part and are connected to the second of second main part both ends and extend laterally
Portion；
Multiple lateral capacitive regions are formed between the touch drive electrode and touch-control sensing electrode, in lateral capacitive region,
Lateral capacitance is formed between the touch drive electrode and touch-control sensing electrode.
First main part and the first lateral extension portion are in a strip shape, the extending direction and first of first main part
The extending direction of lateral extension portion is mutually perpendicular to；
Second main part and the second lateral extension portion are in a strip shape, the extending direction and second of second main part
The extending direction of lateral extension portion is mutually perpendicular to.
First main part intersects with the second main part, in the intersection of first main part and the second main part,
Mutual capacitance is formed between the touch drive electrode and touch-control sensing electrode；Around mutual capacitance, first main body
Portion, the first lateral extension portion, the second main part, the second lateral extension portion cross four lateral capacitive regions.
The lateral capacitance of direction of first main part, the first lateral extension portion, the second main part, the second lateral extension portion
The edge of area side is straight line or curve.
For first main part in the ring-type being closed, first lateral extension portion is in a strip shape；Second main part is in
Rectangular-shaped, second lateral extension portion is in a strip shape；
First main part surrounds the second main part, and the extending direction of first lateral extension portion laterally prolongs with second
The extending direction of extending portion is mutually perpendicular to.
First main part intersects with the second lateral extension portion, in first main part and the second lateral extension portion
Intersection forms mutual capacitance between the touch drive electrode and touch-control sensing electrode；Around mutual capacitance, described
One main part, the second main part, the second lateral extension portion cross two lateral capacitive regions.
The edge of the lateral capacitive region side of direction of first main part, the second main part, the second lateral extension portion is
Straight line or curve.
The touch drive electrode layer includes the several touch drive electrodes being arranged in array；The touch-control sensing electrode layer
Including the several touch-control sensing electrodes being arranged in array；
Be parallel in horizontal plane of the touch drive electrode layer with touch-control sensing electrode layer define it is orthogonal
First direction and second direction；
In the touch drive electrode layer, several touch drive electrodes are arranged as ordered series of numbers along first direction；It is described to touch
It further includes the touch-control drive signal line being distributed in each column touch drive electrode, the touch-control drive signal line to control drive electrode layer
Touch drive electrode in each row is connected in turn；
In the touch-control sensing electrode layer, several touch-control sensing electrodes are arranged as several rows in a second direction；It is described to touch
It further includes the touch-control sensing signal wire being distributed in every row touch-control sensing electrode, the touch-control sensing signal wire to control induction electrode layer
Touch-control sensing electrode in every a line is connected in turn.
The material of the touch drive electrode and touch-control sensing electrode is metal or conductive metal oxide.
The material identical of the touch-control drive signal line and touch drive electrode, the two are formed by one of lithographic process；
The material identical of the touch-control sensing signal wire and touch-control sensing electrode, the two are formed by one of lithographic process.
Beneficial effects of the present invention：The capacitive touch screen of the present invention, by driving electricity to touch-control sensing electrode and touch-control
Pole carries out special design, can increase the lateral capacitance in several lateral capacitive regions around mutual capacitance, carry
The electric field strength for rising touch screen surface improves signal-to-noise ratio, and then promoted and touched to enhance the original signal of touch-control processor acquisition
Sensitivity is controlled, touch experience is optimized.
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with the detailed of the present invention
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
Description of the drawings
Below in conjunction with the accompanying drawings, it is described in detail by the specific implementation mode to the present invention, technical scheme of the present invention will be made
And other beneficial effects are apparent.
In attached drawing,
Fig. 1 is the schematic cross-sectional view of the capacitive touch screen of the present invention；
Fig. 2 is the first embodiment of the touch-control sensing electrode and touch drive electrode in the capacitive touch screen of the present invention
Schematic top plan view；
Fig. 3 is the schematic top plan view of the touch-control sensing electrode layer in the capacitive touch screen of the present invention；
Fig. 4 is the schematic top plan view of the touch drive electrode layer in the capacitive touch screen of the present invention；
Fig. 5 and Fig. 6 is the second reality of the touch-control sensing electrode and touch drive electrode in the capacitive touch screen of the present invention
Apply the schematic top plan view of example；
Fig. 7 is the 3rd embodiment of the touch-control sensing electrode and touch drive electrode in the capacitive touch screen of the present invention
Schematic top plan view；
Fig. 8 and Fig. 9 is the 4th reality of the touch-control sensing electrode and touch drive electrode in the capacitive touch screen of the present invention
Apply the schematic top plan view of example.
Specific implementation mode
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with the preferred implementation of the present invention
Example and its attached drawing are described in detail.
Please refer to Fig.1 to Fig. 9, the present invention provides a kind of capacitive touch screen, including be stacked underlay substrate 10, touch
Control drive electrode layer 20, the first insulating layer 30, touch-control sensing electrode layer 40, second insulating layer 50；
Touch drive electrode (Tx) 21 is equipped in the touch drive electrode layer 20, the touch drive electrode 21 includes the
One main part 211 and the first lateral extension portion 212 for being connected to 211 both ends of the first main part；
Touch-control sensing electrode (Rx) 41 is equipped in the touch-control sensing electrode layer 40, the touch-control sensing electrode 41 includes the
Two main parts 411 and the second lateral extension portion 412 for being connected to 411 both ends of the second main part；
Multiple lateral capacitive regions 70 are formed between the touch drive electrode 21 and touch-control sensing electrode 41, in lateral capacitance
In area 70, lateral capacitance is formed between the touch drive electrode 21 and touch-control sensing electrode 41.
Specifically, during touch-control sensing, the touch-control sensing electrode 41 is for receiving signal, the touch-control driving electricity
Pole 21 is for emitting signal.First insulating layer 30 plays the isolation touch drive electrode layer 20 and touch-control sensing electrode layer
40 effect, the second insulating layer 50 play the role of the isolation touch-control sensing electrode layer 40 and external environment, rise simultaneously
To the effect for protecting the touch-control sensing electrode layer 40.
Referring to Fig. 2, the first embodiment of the capacitive touch screen for the present invention, first main part 211 and first
Lateral extension portion 212 is in a strip shape, the extension side of the extending direction of first main part 211 and the first lateral extension portion 212
To being mutually perpendicular to.
Specifically, second main part 411 and the second lateral extension portion 412 are in a strip shape, second main part 411
The extending direction of extending direction and the second lateral extension portion 412 be mutually perpendicular to.
Specifically, first main part 211 intersects with the second main part 411, in first main part 211 and second
The intersection of main part 411 forms mutual capacitance 60, in interaction between the touch drive electrode 21 and touch-control sensing electrode 41
Around capacitance 60, first main part 211, the first lateral extension portion 212, the second main part 411, the second lateral extension portion
412 cross four lateral capacitive regions 70.
Specifically, first main part 211, the first lateral extension portion 212, the second main part 411, second extending laterally
The edge of lateral 70 side of capacitive region of direction in portion 412 is straight line.
In traditional capacitive touch screen, touch-control sensing electrode only includes the first main part, and touch drive electrode only includes
Second main part, the lateral capacitance in four lateral capacitive regions that first main part is crossed with the second main part is smaller, this
Invention at the both ends of the first main part 211 and the second main part 411 by being respectively set the first lateral extension portion 212 and the second side
To extension 412, it is equivalent to the area for the electrode plate for increasing lateral capacitance both ends, so as to increase in lateral capacitive region 70
Lateral capacitance, promote the electric field strength of touch screen surface, the original signal that enhancing touch-control processor obtains improves signal-to-noise ratio,
And then touch-control sensitivity is promoted, optimize touch experience.
Specifically, as shown in Figure 3 and Figure 4, the touch drive electrode layer 20 includes that the several touch-controls being arranged in array drive
Moving electrode 21；The touch-control sensing electrode layer 40 includes the several touch-control sensing electrodes 41 being arranged in array.
Specifically, being defined being parallel in horizontal plane of the touch drive electrode layer 20 with touch-control sensing electrode layer 40
Orthogonal first direction (x) and second direction (y)；
As shown in figure 3, in the touch drive electrode layer 20, several touch drive electrodes 21 are along first direction (x)
It is arranged as ordered series of numbers；The touch drive electrode layer 20 further includes the touch-control drive signal being distributed in each column touch drive electrode 21
Touch drive electrode 21 in each row is connected in turn by line 22, the touch-control drive signal line 22；
As shown in figure 4, in the touch-control sensing electrode layer 40, several touch-control sensing electrodes 41 are in a second direction (y)
It is arranged as several rows；The touch-control sensing electrode layer 40 further includes the touch-control sensing signal being distributed in every row touch-control sensing electrode 41
Touch-control sensing electrode 41 in every a line is connected in turn by line 42, the touch-control sensing signal wire 42.
Specifically, the touch drive electrode 21 and the material of touch-control sensing electrode 41 can be metal or conductive metal
Oxide, the metal include one or more of aluminium (Al), copper (Cu), and the conductive metal oxide preferably aoxidizes
Indium tin (ITO).
Specifically, the material identical of the touch-control drive signal line 22 and touch drive electrode 21, the two pass through one of light
Journey is scribed to be formed；The material identical of the touch-control sensing signal wire 42 and touch-control sensing electrode 41, the two pass through one of optical graving
Journey is formed.
Specifically, the material of first insulating layer 30 and second insulating layer 50 can be organic insulating material or inorganic
Insulating materials, the inorganic insulating material include one or more in silicon nitride or silica.
Specifically, the underlay substrate 10 is glass substrate.
Specifically, the production method of the capacitive touch screen of the present embodiment includes：
Step 1 provides underlay substrate 10, and the depositing first conductive layer on the underlay substrate 10 is conductive to described first
Layer carries out photoetching treatment, obtains touch drive electrode layer 20；
Step 2 deposits entire first insulating layer 30 on the touch drive electrode layer 20 and underlay substrate 10；
Step 3, the deposit second conductive layer on first insulating layer 30 carry out at photoetching second conductive layer
Reason, obtains touch-control sensing electrode layer 40；
Step 4 deposits entire second insulating layer 50 on 40 and first insulating layer 30 of the touch-control sensing electrode layer.
It is noted that the capacitive touch screen of the present embodiment can be applied to external hanging type touch screen or covering surface
In formula touch screen, signal-to-noise ratio can be effectively improved, promotes touch-control sensitivity.
Fig. 5 and Fig. 6 are please referred to, for the second embodiment of the capacitive touch screen of the present invention, the area with first embodiment
It is not the court of first main part 211, the first lateral extension portion 212, the second main part 411, the second lateral extension portion 412
It is curve to the edge of 70 side of lateral capacitive region.Specifically, the curve can be jagged equity curve (as shown in Figure 3) or
Waveform curve (as shown in Figure 4).When first main part 211, the first lateral extension portion 212, the second main part 411,
When the edge of lateral 70 side of capacitive region of direction of two lateral extension portions 412 is curve, it is equivalent to and further increases lateral electricity
The area for holding the electrode plate at both ends, can further increase the lateral capacitance in lateral capacitive region 70, enhance touch screen surface
Electric field strength promotes touch-control sensitivity.
Referring to Fig. 7, the 3rd embodiment of the capacitive touch screen for the present invention, first main part 211 is in closure
Ring-type, first lateral extension portion 212 is in a strip shape；Second main part 411 is rectangular, and described second extends laterally
Portion 412 is in a strip shape；
First main part 211 surrounds the second main part 411, the extending direction of first lateral extension portion 212 with
The extending direction of second lateral extension portion 412 is mutually perpendicular to.
Specifically, first main part 211 intersects with the second lateral extension portion 412, first main part 211 with
The intersection of second lateral extension portion 412, mutual capacitance is formed between the touch drive electrode 21 and touch-control sensing electrode 41
60；Around mutual capacitance 60, first main part 211, the second main part 411, the second lateral extension portion 412 cross two
A lateral capacitive region 70.
Specifically, first main part 211, the second main part 411, the direction of the second lateral extension portion 412 are laterally electric
The edge for holding 70 side of area is straight line.
In traditional capacitive touch screen, touch-control sensing electrode only includes the first main part, and touch drive electrode only includes
Second main part, the lateral capacitance in four lateral capacitive regions that first main part is crossed with the second main part is smaller, this
Invention at the both ends of the first main part 211 and the second main part 411 by being respectively set the first lateral extension portion 212 and the second side
To extension 412, and the first main part 211 surrounds the second main part 411, is equivalent to the electrode for increasing lateral capacitance both ends
The area of plate promotes the electric field strength of touch screen surface so as to increase the lateral capacitance in lateral capacitive region 70, and enhancing is touched
The original signal that processor obtains is controlled, signal-to-noise ratio is improved, and then promote touch-control sensitivity, optimizes touch experience.
Specifically, the touch drive electrode layer 20 includes the several touch drive electrodes 21 being arranged in array；It is described to touch
Control induction electrode layer 40 includes the several touch-control sensing electrodes 41 being arranged in array.
Specifically, being defined being parallel in horizontal plane of the touch drive electrode layer 20 with touch-control sensing electrode layer 40
Orthogonal first direction (x) and second direction (y)；
In the touch drive electrode layer 20, several touch drive electrodes 21 are arranged as ordered series of numbers along first direction (x)；
The touch drive electrode layer 20 further includes the touch-control drive signal line 22 being distributed in each column touch drive electrode 21, described to touch
Touch drive electrode 21 in each row is connected in turn by control drive signal line 22；
In the touch-control sensing electrode layer 40, (y) is arranged as several rows several touch-control sensing electrodes 41 in a second direction；
The touch-control sensing electrode layer 40 further includes the touch-control sensing signal wire 42 being distributed in every row touch-control sensing electrode 41, described to touch
Touch-control sensing electrode 41 in every a line is connected in turn by control inductive signal line 42.
Specifically, the touch drive electrode 21 and the material of touch-control sensing electrode 41 can be metal or conductive metal
Oxide, the metal include one or more of aluminium (Al), copper (Cu), and the conductive metal oxide preferably aoxidizes
Indium tin (ITO).
Specifically, the material identical of the touch-control drive signal line 22 and touch drive electrode 21, the two pass through one of light
Journey is scribed to be formed；The material identical of the touch-control sensing signal wire 42 and touch-control sensing electrode 41, the two pass through one of optical graving
Journey is formed.
Specifically, the material of first insulating layer 30 and second insulating layer 50 can be organic insulating material or inorganic
Insulating materials, the inorganic insulating material include one or more in silicon nitride or silica.
Specifically, the underlay substrate 10 is glass substrate.
Specifically, the production method of the capacitive touch screen of the present embodiment includes：
Step 1 provides underlay substrate 10, and the depositing first conductive layer on the underlay substrate 10 is conductive to described first
Layer carries out photoetching treatment, obtains touch drive electrode layer 20；
Step 2 deposits entire first insulating layer 30 on the touch drive electrode layer 20 and underlay substrate 10；
Step 3, the deposit second conductive layer on first insulating layer 30 carry out at photoetching second conductive layer
Reason, obtains touch-control sensing electrode layer 40；
Step 4 deposits entire second insulating layer 50 on 40 and first insulating layer 30 of the touch-control sensing electrode layer.
It is noted that the capacitive touch screen of the present embodiment can be applied in external hanging type touch screen, can effectively carry
High s/n ratio promotes touch-control sensitivity.
Fig. 8 and Fig. 9 are please referred to, for the fourth embodiment of the capacitive touch screen of the present invention, the area with 3rd embodiment
It is not lateral 70 side of capacitive region of direction of first main part 211, the second main part 411, the second lateral extension portion 412
Edge be curve.Specifically, the curve can be jagged equity curve (as shown in Figure 8) or waveform curve (such as Fig. 9 institutes
Show).When lateral 70 side of capacitive region of direction of first main part 211, the second main part 411, the second lateral extension portion 412
Edge be curve when, be equivalent to the area for the electrode plate for further increasing lateral capacitance both ends, side can be further increased
Lateral capacitance into capacitive region 70 enhances the electric field strength of touch screen surface, promotes touch-control sensitivity.
In conclusion the present invention provides a kind of capacitive touch screen, by touch-control sensing electrode and touch drive electrode
Special design is carried out, the lateral capacitance in several lateral capacitive regions around mutual capacitance can be increased, is promoted
The electric field strength of touch screen surface improves signal-to-noise ratio, and then promote touch-control to enhance the original signal of touch-control processor acquisition
Sensitivity optimizes touch experience.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding change and deformations are made in design, and all these change and distortions should all belong to the claims in the present invention
Protection domain.
Claims (10)
1. a kind of capacitive touch screen, which is characterized in that including underlay substrate (10), the touch drive electrode layer being stacked
(20), the first insulating layer (30), touch-control sensing electrode layer (40), second insulating layer (50)；
Touch drive electrode (21) is equipped in the touch drive electrode layer (20), the touch drive electrode (21) includes first
Main part (211) and the first lateral extension portion (212) for being connected to the first main part (211) both ends；The touch-control sense
Answer in electrode layer (40) be equipped with touch-control sensing electrode (41), the touch-control sensing electrode (41) include the second main part (411) with
And it is connected to second lateral extension portion (412) at the second main part (411) both ends；
Multiple lateral capacitive regions (70) are formed between the touch drive electrode (21) and touch-control sensing electrode (41), in lateral electricity
Hold in area (70), lateral capacitance is formed between the touch drive electrode (21) and touch-control sensing electrode (41).
2. capacitive touch screen as described in claim 1, which is characterized in that first main part (211) is lateral with first
Extension (212) is in a strip shape, the extension of the extending direction and the first lateral extension portion (212) of first main part (211)
Direction is mutually perpendicular to；
Second main part (411) and the second lateral extension portion (412) are in a strip shape, and the second main part (411) prolong
It stretches direction and the extending direction of the second lateral extension portion (412) is mutually perpendicular to.
3. capacitive touch screen as claimed in claim 2, which is characterized in that first main part (211) and the second main body
Portion (411) intersects, in the intersection of first main part (211) and the second main part (411), the touch drive electrode
(21) mutual capacitance (60) is formed between touch-control sensing electrode (41)；Around mutual capacitance (60), first main body
Portion (211), the first lateral extension portion (212), the second main part (411), the second lateral extension portion (412) cross four lateral electricity
Hold area (70).
4. capacitive touch screen as claimed in claim 3, which is characterized in that first main part (211), first laterally prolong
Extending portion (212), the second main part (411), the second lateral extension portion (412) the edge of the lateral capacitive region of direction (70) side be
Straight line or curve.
5. capacitive touch screen as described in claim 1, which is characterized in that first main part (211) is in the ring being closed
Shape, first lateral extension portion (212) are in a strip shape；Second main part (411) is rectangular, and described second extends laterally
Portion (412) is in a strip shape；
First main part (211) surrounds the second main part (411), the extending direction of first lateral extension portion (212)
It is mutually perpendicular to the extending direction of the second lateral extension portion (412).
6. capacitive touch screen as claimed in claim 5, which is characterized in that first main part (211) is lateral with second
Extension (412) intersects, and in the intersection of first main part (211) and the second lateral extension portion (412), the touch-control drives
Mutual capacitance (60) is formed between moving electrode (21) and touch-control sensing electrode (41)；Around mutual capacitance (60), described
One main part (211), the second main part (411), the second lateral extension portion (412) cross two lateral capacitive regions (70).
7. capacitive touch screen as claimed in claim 6, which is characterized in that first main part (211), the second main part
(411), the edge of the lateral capacitive region of direction (70) side of the second lateral extension portion (412) is straight line or curve.
8. capacitive touch screen as described in claim 1, which is characterized in that the touch drive electrode layer (20) includes in battle array
Arrange several touch drive electrodes (21) of arrangement；The touch-control sensing electrode layer (40) includes the several touch-control senses being arranged in array
Answer electrode (41)；
It mutually hangs down being parallel to define in horizontal plane of the touch drive electrode layer (20) with touch-control sensing electrode layer (40)
Straight first direction (x) and second direction (y)；
In the touch drive electrode layer (20), several touch drive electrodes (21) are arranged as ordered series of numbers along first direction (x)；
The touch drive electrode layer (20) further includes the touch-control drive signal line (22) being distributed in each column touch drive electrode (21),
Touch drive electrode (21) in each row is connected in turn by the touch-control drive signal line (22)；
In the touch-control sensing electrode layer (40), (y) is arranged as several rows several touch-control sensing electrodes (41) in a second direction；
The touch-control sensing electrode layer (40) further includes the touch-control sensing signal wire (42) being distributed in every row touch-control sensing electrode (41),
Touch-control sensing electrode (41) in every a line is connected in turn by the touch-control sensing signal wire (42).
9. capacitive touch screen as described in claim 1, which is characterized in that the touch drive electrode (21) and touch-control sensing
The material of electrode (41) is metal or conductive metal oxide.
10. capacitive touch screen as claimed in claim 8, which is characterized in that the touch-control drive signal line (22) and touch-control
The material identical of driving electrodes (21), the two are formed by one of lithographic process；The touch-control sensing signal wire (42) and touch-control
The material identical of induction electrode (41), the two are formed by one of lithographic process.
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|---|---|---|---|
| CN201810474813.2A CN108717339A (en) | 2018-05-17 | 2018-05-17 | Capacitive touch screen |
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| CN201810474813.2A CN108717339A (en) | 2018-05-17 | 2018-05-17 | Capacitive touch screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110069163A (en) * | 2019-04-19 | 2019-07-30 | 京东方科技集团股份有限公司 | A kind of touch display substrate and display screen |
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