CN104423754A - Touch detection assembly, touch control device and portable electronic equipment - Google Patents
Touch detection assembly, touch control device and portable electronic equipment Download PDFInfo
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- CN104423754A CN104423754A CN201310413786.5A CN201310413786A CN104423754A CN 104423754 A CN104423754 A CN 104423754A CN 201310413786 A CN201310413786 A CN 201310413786A CN 104423754 A CN104423754 A CN 104423754A
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- touch detection
- detection components
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- layer
- chinampa
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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
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
Abstract
The invention discloses a touch detection assembly. The touch detection assembly comprises a substrate, an induction layer and a driving layer, wherein the induction layer is located on the substrate and comprises a plurality of receiving electrodes which extend along a first direction, are parallel to one another and are arranged in a uniformly-spaced manner; the driving layer is located below the substrate and comprises a plurality of exciting electrodes which extend along a second direction, are parallel to one another and are arranged in the uniformly-spaced manner, the first direction and the second direction are parallel to the substrate and are vertical to each other, and a hollow part of or floating island part is arranged in each exciting electrode at the vertical projection position of the corresponding receiving electrode. According to the touch detection assembly disclosed by the invention, the accuracy of detection can be improved through reducing the mutual capacitance of vertical coupled faces. The invention further discloses a touch control device and portable electronic equipment.
Description
Technical field
The present invention relates to electronic device design and manufacturing technology field, particularly relate to a kind of contactor control device and the portable electric appts that touch detection components, there is described touch detection components.
Background technology
Current touch detection components (touch-screen) at mobile phone, PDA(personal digital assistant), GPS(GPS), PMP(MP3, MP4 etc.), even obtain application in the electronic equipment such as panel computer.Touch-screen has that touch control operation is simple, convenient, the advantage of hommization, and therefore touch-screen is expected to become the best interface of human-computer interaction and is widely applied in a portable device.
Realize true multiple point touching and generally need mutual capacitance screen, wherein double-deck mutual capacitance screen is the mutual capacitance screen of current main flow.The structure of this mutual capacitance screen as shown in Figure 1a, comprises inductive layer diaphragm 600, inductive layer 200, substrate 100, drives layer 300, drive layer diaphragm to be that 700, EL represents electric field line.The principle of work of this mutual capacitance screen as shown in Figure 1 b, Tx represents the excitation end driven in layer 300, Rx represents the receiving end in inductive layer 200, R1 and C1 represents the resistance and electric capacity that drive conductive path part in layer 300, R2 and C2 represents resistance and the electric capacity of conductive path part in inductive layer 200, C3 and C4 combines the mutual capacitance between driving layer 200 and inductive layer 300 representing finger touch place.Particularly, due to the self structure of mutual capacitance screen, to drive in layer in electrode and inductive layer Existential Space electric field between electrode.Wherein, the coupling capacitance driving the marginal portion of vertical coupled of electrode in electrode and inductive layer in layer to produce is designated as C3, and C3 can change when finger touch.The coupling capacitance driving the middle body of vertical coupled of electrode in electrode and inductive layer in layer to produce is designated as C4, and C4 does not change when finger touch.What usual testing circuit detected is C3 and C4 sum, due to variable capacitance C3 ratio less and constant electric capacity C4 large percentage, therefore before and after finger touch mutual capacitance variable quantity to account for the ratio of mutual capacitance measured value very little, so detect to get up to acquire a certain degree of difficulty, precision is lower.
Summary of the invention
Of the present inventionly be intended to one of solve the problems of the technologies described above at least to a certain extent, be especially intended at least to solve or avoid to occur that traditional mutual capacitance type touches one of above-mentioned shortcoming in detection components.
The first aspect of the embodiment of the present invention proposes a kind of touch detection components, comprising: substrate; Inductive layer, described inductive layer is positioned on described substrate, and described inductive layer comprises multiple that extend along first direction, that be parallel to each other, receiving electrode of being evenly spaced apart arrangement; Drive layer, described driving layer is positioned under described substrate, described driving layer comprises multiple that extend along second direction, that be parallel to each other, exciting electrode of being evenly spaced apart arrangement, wherein, described first direction and second direction and described substrate-parallel and described first direction and second direction orthogonal, be provided with hollow-out parts or chinampa portion in the vertical projection position of described receiving electrode in described exciting electrode.
According to the touch detection components of the embodiment of the present invention, by the vertical projection position of receiving electrode in exciting electrode, hollow-out parts or chinampa portion are set, decrease the vertically opposite area between receiving electrode and exciting electrode, namely the two vertical coupled area is decreased, electric capacity C4 is reduced, thus increase the ratio that C3 variable quantity accounts for total capacitance (i.e. C3 and C4 sum), there is detection range less, the advantage that accuracy of detection is higher.In addition, because hollow-out parts or chinampa portion are positioned under substrate, be not easily found during visual inspection, therefore this touch detection components has hidden advantage attractive in appearance.Finally, this touch detection components does not also increase cost, is beneficial to the advantage of large-scale production.
In addition, according to the touch detection components of the embodiment of the present invention, also there is following additional technical feature:
In one embodiment of the invention, the multiple described hollow-out parts or the chinampa portion that are evenly spaced apart arrangement is provided with in the vertical projection position of described receiving electrode in described exciting electrode.
In one embodiment of the invention, described hollow-out parts or chinampa portion are square.
In one embodiment of the invention, described chinampa portion is made up of ITO.
In one embodiment of the invention, described exciting electrode and described receiving electrode are strip shaped electric poles.
In one embodiment of the invention, inductive layer chinampa portion is provided with between adjacent two described receiving electrodes.
In one embodiment of the invention, also comprise: drive layer diaphragm, described driving layer diaphragm is positioned under described driving layer; With inductive layer diaphragm, described inductive layer diaphragm is positioned on described inductive layer.
The second aspect of the embodiment of the present invention also proposed a kind of contactor control device, comprising: touch detection components, described touch detection components is for touch detection components as above; And control chip, described control chip is connected with receiving electrode with described exciting electrode, described control chip is configured to for applying level signal to described exciting electrode and detecting the level signal of described receiving electrode, and judges according to testing result the touch location that described touch detection components is touched.
According to the contactor control device of the embodiment of the present invention, touch the exciting electrode of detection components and the signal of the receiving electrode of detection components by control chip excitation, judge touch location, realize touch control.It is high that the contactor control device of the embodiment of the present invention has accuracy of detection, good visual effect, the advantages such as Consumer's Experience is good, low cost of manufacture.
The third aspect of the embodiment of the present invention the invention allows for a kind of portable electric appts, and this portable electric appts comprises contactor control device as above.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 a is the structural representation of double-deck mutual capacitance screen;
Fig. 1 b is the fundamental diagram of double-deck mutual capacitance screen;
Fig. 2 a is that existing double-deck mutual capacitance type touches the driving layer of detection components and the structural representation of inductive layer;
Fig. 2 b is for driving the structural representation of layer in the existing double-deck mutual capacitance type touch detection components shown in Fig. 2 a;
Fig. 2 c is the structural representation of inductive layer in the existing double-deck mutual capacitance type touch detection components shown in Fig. 2 a;
Fig. 2 d is the electric field schematic diagram in the existing double-deck mutual capacitance type touch detection components shown in Fig. 2 a between exciting electrode and receiving electrode;
Fig. 3 a is the driving layer of the touch detection components of the embodiment of the present invention and the structural representation of inductive layer;
The structural representation of layer is driven in the touch detection components of Fig. 3 b for the embodiment of the present invention shown in Fig. 3 a;
The structural representation of inductive layer in the touch detection components that Fig. 3 c is the embodiment of the present invention shown in Fig. 3 a;
Electric field schematic diagram in the touch detection components that Fig. 3 d is the embodiment of the present invention shown in Fig. 3 a between exciting electrode and receiving electrode;
Fig. 4 is the structured flowchart of the contactor control device of the embodiment of the present invention; With
Fig. 5 is the structured flowchart of the portable electric appts of the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
For making those skilled in the art understand the present invention better, first composition graphs 2a to Fig. 2 d further illustrates the shortcoming that existing double-deck mutual capacitance type touches detection components.As shown in Fig. 2 a to Fig. 2 c, this double-deck mutual capacitance type touches in the inductive layer 200 of detection components, comprises multiple that extend in the row direction, that be parallel to each other, receiving electrode 210 of being evenly spaced apart arrangement.This double-deck mutual capacitance type touches in the driving layer 300 of detection components, comprises multiple that extend along column direction, that be parallel to each other, exciting electrode 310 of being evenly spaced apart arrangement.As shown in Figure 2 d, this double-deck mutual capacitance type touches between the exciting electrode 310 of detection components and receiving electrode 210 and there is coupling capacitance.The coupling capacitance that the marginal portion of vertical coupled produces is designated as C3, and C3 can change when finger touch.The coupling capacitance that the middle body of vertical coupled produces is designated as C4, and C4 does not change substantially when finger touch.The numerical value of usual C4 is greater than the numerical value of C3.
The first aspect of the embodiment of the present invention proposes a kind of touch detection components, can comprise: substrate 100, inductive layer 200 and driving layer 300.Inductive layer 200 is positioned on substrate 100, comprises multiple that extend along first direction, that be parallel to each other, receiving electrode 210 of being evenly spaced apart arrangement.Drive layer 300 to be positioned under substrate 100, comprise multiple that extend along second direction, that be parallel to each other, exciting electrode 310 of being evenly spaced apart arrangement.Wherein, first direction and first direction parallel with substrate 100 with second direction and second direction orthogonal.Hollow-out parts 410 or chinampa portion 420 is provided with in the vertical projection position of receiving electrode 210 in exciting electrode 310.According to the touch detection components of the embodiment of the present invention, by the vertical projection position of receiving electrode in exciting electrode, hollow-out parts or chinampa portion are set, decrease the vertically opposite area between receiving electrode and exciting electrode, namely the two vertical coupled area is decreased, electric capacity C4 is reduced, thus increase the ratio that C3 variable quantity accounts for total capacitance (C3 and C4 sum), there is detection range less, the advantage that accuracy of detection is higher.In addition, because hollow-out parts or chinampa portion are positioned under substrate, be not easily found during visual inspection, therefore this touch detection components has hidden advantage attractive in appearance.Finally, this touch detection components does not also increase cost, is beneficial to the advantage of large-scale production.
In one embodiment of the invention, the multiple hollow-out parts 410 or the chinampa portion 420 that are evenly spaced apart arrangement can be provided with in the vertical projection position of receiving electrode 210 in exciting electrode 310.Multiple be evenly spaced apart arrangement hollow-out parts 410 or chinampa portion 420 be more conducive to reducing the electric field intensity between receiving electrode 210 and exciting electrode 310 equably than single hollow-out parts 410 or chinampa portion 420.
In one embodiment of the invention, hollow-out parts 410 or chinampa portion 420 can be square.Foursquare hollow-out parts 410 or chinampa portion 420 more easily process, and are suitable for large-scale production.It should be noted that, hollow-out parts 410 or chinampa portion 420 can be also other shapes, specifically can select flexibly as required.
In one embodiment of the invention, chinampa portion 410 can by ITO(tin indium oxide) form.Chinampa portion 410 adopts ITO material to have, and electric conductivity is good, resistance is little, transparent advantage hidden, cheap and easy to get.
In one embodiment of the invention, receiving electrode 210 and exciting electrode 310 can be strip shaped electric poles.Receiving electrode 210 and the exciting electrode 310 of strip are more easily processed, and are suitable for large-scale production.It should be noted that, receiving electrode 210 and exciting electrode 310 can be also other shapes, specifically can select flexibly as required.
In one embodiment of the invention, inductive layer chinampa portion 500 can be provided with between adjacent two receiving electrodes 210.The intensity of the electric field of distance RX TX part far away as " bridge " of electric field line, can effectively improve in inductive layer chinampa portion 500.It should be noted that, this portion 510, inductive layer chinampa is for optional and nonessential.
In one embodiment of the invention, can also comprise: be positioned at the inductive layer diaphragm 600 on inductive layer 200, and be positioned at the driving layer diaphragm 700 driven under layer 300.Inductive layer diaphragm 600 and driving layer diaphragm 700 can not be subject to outside contamination or destruction with driving layer 300 by available protecting inductive layer 200.
Fig. 3 a to Fig. 3 c shows the inductive layer 200 of the touch detection components of the embodiment of the present invention and the structure driving layer 300.In the inductive layer 200 of the touch detection components of the embodiment of the present invention, comprise multiple that extend in the row direction, that be parallel to each other, receiving electrode 210 of being evenly spaced apart arrangement.Drive in layer 300, comprise multiple that extend along column direction, that be parallel to each other, exciting electrode 310 of being evenly spaced apart arrangement.As shown in Figure 3 d, in the exciting electrode 310 of the embodiment of the present invention, the vertical projection position of inductive layer 200 is provided with hollow-out parts 410 or chinampa portion 420.As shown in Figure 3 d, exist between the exciting electrode 310 of the touch detection components of the embodiment of the present invention and receiving electrode 210 and produce coupling capacitance.Due to the effect in hollow-out parts 410 or chinampa portion 420, the electric field between receiving electrode 210 and exciting electrode 310 is weakened, thus electric capacity C4 is reduced, thus increase the ratio that C3 variable quantity accounts for total capacitance (C3 and C4 sum).
The second aspect of the embodiment of the present invention proposes a kind of contactor control device.As shown in Figure 4, this contactor control device can comprise: the touch detection components 10 that above-described embodiment describes and control chip 20.Wherein control chip 20 is connected with exciting electrode 310 with the receiving electrode 210 touched in detection components 10.This control chip 20 is configured to for applying level signal to exciting electrode 210 and detecting the level signal of receiving electrode 310, and judges according to testing result the touch location that touch detection components 10 is touched.
According to the contactor control device of the embodiment of the present invention, touch the exciting electrode of detection components and the signal of the receiving electrode of detection components by control chip excitation, judge touch location, realize touch control.It is high that the contactor control device of the embodiment of the present invention has accuracy of detection, good visual effect, the advantages such as Consumer's Experience is good, low cost of manufacture.
The third aspect of the embodiment of the present invention proposes a kind of contactor control device.As shown in Figure 5, the contactor control device 1 described with reference to above-described embodiment can be comprised according to the portable electric appts E of the embodiment of the present invention.Waiting according to other configuration examples of the portable electric appts of the embodiment of the present invention as framed structure and control form and operate is all known for those of ordinary skills, is not described in detail here.
Based on the structure similar to contactor control device, it is good that the contactor control device of the embodiment of the present invention has interference performance, and signal to noise ratio (S/N ratio) is high, good visual effect, the advantages such as Consumer's Experience is good, low cost of manufacture.
Inventor has also carried out emulation experiment to the touch detection components of the embodiment of the present invention, specific as follows:
Under normal circumstances, the receiving electrode 210 of double-decker mutual capacitance screen and the spacing of exciting electrode 310 are 0.5mm, according to basic capacitance equation
wherein ε and 4 π K is constants, and d is the distance of two pole plates, and namely substrate 100 thickness 0.5mm, generally immutable, so reduces S-phase and just directly can reduce mutual capacitance to area.The vertical right opposite of the inductive layer 200 in prior art in (see Fig. 2 d) exciting electrode 310 amasss position and is about 7mm × 0.8mm, and now, carry out capacity measurement and record C3 and be about 2-3pf, C4 is about 6pf, and capacitance change is no more than 25% of measurement capacitance.According in the touch detection components of the embodiment of the present invention, the vertically opposite position often locating receiving electrode 210 and exciting electrode 310 arranges the hollow-out parts 410 of multiple 0.3mm × 0.3mm, and entire area and the vertically opposite position of multiple hollow-out parts 410 are basically identical.Now, carry out capacity measurement and record C3 and be about 2-3pf, C4 is about 2-3pf, and capacitance change reaches 50% of measurement capacitance, and accuracy of detection significantly improves.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (9)
1. touch a detection components, it is characterized in that, comprising:
Substrate;
Inductive layer, described inductive layer is positioned on described substrate, and described inductive layer comprises multiple that extend along first direction, that be parallel to each other, receiving electrode of being evenly spaced apart arrangement;
Drive layer, described driving layer is positioned under described substrate, described driving layer comprises multiple that extend along second direction, that be parallel to each other, exciting electrode of being evenly spaced apart arrangement, wherein, described first direction and second direction and described substrate-parallel and described first direction and second direction orthogonal, be provided with hollow-out parts or chinampa portion in the vertical projection position of described receiving electrode in described exciting electrode.
2. touch detection components as claimed in claim 1, it is characterized in that, in described exciting electrode, be provided with the multiple described hollow-out parts or the chinampa portion that are evenly spaced apart arrangement in the vertical projection position of described receiving electrode.
3. touch detection components as claimed in claim 1 or 2, it is characterized in that, described hollow-out parts or chinampa portion are square.
4. touch detection components as claimed in claim 1, it is characterized in that, described chinampa portion is made up of ITO.
5. touch detection components as claimed in claim 1, it is characterized in that, described exciting electrode and described receiving electrode are strip shaped electric poles.
6. touch detection components as claimed in claim 1, it is characterized in that, between adjacent two described receiving electrodes, be provided with inductive layer chinampa portion.
7. touch detection components as claimed in claim 1, it is characterized in that, also comprise:
Drive layer diaphragm, described driving layer diaphragm is positioned under described driving layer; With
Inductive layer diaphragm, described inductive layer diaphragm is positioned on described inductive layer.
8. a contactor control device, is characterized in that, comprising:
Touch detection components, described touch detection components is the touch detection components such as according to any one of claim 1-7; With
Control chip, described control chip is connected with receiving electrode with described exciting electrode, described control chip is configured to for applying level signal to described exciting electrode and detecting the level signal of described receiving electrode, and judges according to testing result the position that described touch detection components is touched.
9. a portable electric appts, is characterized in that, comprises contactor control device as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310413786.5A CN104423754A (en) | 2013-09-11 | 2013-09-11 | Touch detection assembly, touch control device and portable electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310413786.5A CN104423754A (en) | 2013-09-11 | 2013-09-11 | Touch detection assembly, touch control device and portable electronic equipment |
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| CN104423754A true CN104423754A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310413786.5A Pending CN104423754A (en) | 2013-09-11 | 2013-09-11 | Touch detection assembly, touch control device and portable electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106933430A (en) * | 2015-04-28 | 2017-07-07 | 禾瑞亚科技股份有限公司 | Touch panel, touch screen and touch electronic device |
| CN109375840A (en) * | 2018-12-05 | 2019-02-22 | 武汉华星光电半导体显示技术有限公司 | Touch control electrode unit, touch panel and touch control display |
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| CN102819362A (en) * | 2011-06-08 | 2012-12-12 | 比亚迪股份有限公司 | Capacitive touch screen and touch device with same |
| CN102819364A (en) * | 2011-06-08 | 2012-12-12 | 比亚迪股份有限公司 | Capacitive touch screen and touch device with same |
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| CN102117157A (en) * | 2009-12-30 | 2011-07-06 | 旭曜科技股份有限公司 | Capacitance-type touch-control panel with high sensitivity |
| US20110187676A1 (en) * | 2010-02-04 | 2011-08-04 | Shenzhen GOODIX Technology Co., Ltd. | Capacitive touch sensor, touch detection device and touch terminal |
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| CN106933430A (en) * | 2015-04-28 | 2017-07-07 | 禾瑞亚科技股份有限公司 | Touch panel, touch screen and touch electronic device |
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| CN109375840A (en) * | 2018-12-05 | 2019-02-22 | 武汉华星光电半导体显示技术有限公司 | Touch control electrode unit, touch panel and touch control display |
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