CN105511650A - Single-layer mutual-capacitance touch panel - Google Patents
Single-layer mutual-capacitance touch panel Download PDFInfo
- Publication number
- CN105511650A CN105511650A CN201610055480.0A CN201610055480A CN105511650A CN 105511650 A CN105511650 A CN 105511650A CN 201610055480 A CN201610055480 A CN 201610055480A CN 105511650 A CN105511650 A CN 105511650A
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- China
- Prior art keywords
- touch control
- control electrode
- direction touch
- electrode unit
- trackpad
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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
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
Abstract
The invention provides a single-layer mutual-capacitance touch panel which comprises a substrate, first-direction touch electrodes and second-direction touch electrodes. The first-direction touch electrodes and the second-direction touch electrodes intersect with one another and are arranged on the surface of the substrate, each first-direction touch electrode comprises a plurality of first-direction touch electrode units, each second-direction touch electrode comprises a plurality of second-direction touch electrode units, the first-direction touch electrode units and the second-direction touch electrode units are provided with hollow-out regions, input ends of at least two adjacent first-direction touch electrodes or input ends of at least two adjacent second-direction electrodes are connected with each other, output ends of at least two adjacent first-direction touch electrodes or output ends of at least two adjacent second-direction touch electrodes are connected with each other, and each of the input ends and the output ends is connected with a chip by an electrode connecting wire. The single-layer mutual-capacitance touch panel has the advantages that the problem of floating can be effectively solved by the aid of the single-layer mutual-capacitance touch panel, and the single-layer mutual-capacitance touch panel is simple in structure, is integrally lightened and thinned and has good touch hand feel.
Description
[technical field]
The present invention relates to a kind of Trackpad, particularly relate to a kind of touch-control accuracy high, the individual layer mutual capacitance Trackpad of suspension problem can be solved preferably.
[background technology]
The technical development of Trackpad greatly, more common technology comprises resistance-type, condenser type and optical profile type etc. at present, wherein capacitive touch control plate is owing to having the features such as high-accuracy, multi-point touch, high durability and high touch-control resolution, has become the main flow touch technology that at present, high-order consumption electronic products use.
The principle of operation of capacitive touch control plate uses induction electrode to detect the capacitance variations of touch point position, and utilize connecting line different directions axle linking each electrode passed back by signal and complete location, in recent years, along with developing rapidly of touch-control sensing technology, many consumption electronic products are mobile phone (mobilephone) such as, GPS (GPSnavigatorsystem), panel computer (tabletPC), personal digital assistant (PDA) and notebook (laptopPC) etc. all have the product be combined with touch controllable function to release, greatly improve the quality of the life of people.
The fast development of Trackpad, following also occurred some not the problem that accepts by people, the outstanding suspension problem as Trackpad (floating), finger is when Trackpad, produce multiple touch point, affect normal touch function, reduce experience degree, conventional settling mode mostly is the coupling capacitance increasing and drive between induction electrode, like this, cost of manufacture and operate power can be increased, be unfavorable for normal technical development, how could in the natural capacity reducing finger and induction and between driving, and don't the mutual capacitance affected between electrode, finally realize normal touch, do not produce multiple touch point, it is the normal development direction of Trackpad, based on this, those skilled in the art has carried out a large amount of R&D works, also outstanding achievement is achieved.
[summary of the invention]
For solving prior art Problems existing, the invention provides a kind of touch-control accuracy high, the individual layer mutual capacitance Trackpad of suspension problem can be solved preferably.
The scheme of technical solution problem of the present invention is to provide individual layer mutual capacitance Trackpad, comprises a substrate; One touch control electrode layer, touch control electrode layer comprises at least two first direction touch control electrode and at least two second direction touch control electrode, first direction touch control electrode and second direction touch control electrode interlaced and be arranged at the same surface of substrate, first direction touch control electrode comprises the first direction touch control electrode unit of multiple series connection, second direction touch control electrode comprises the second direction touch control electrode unit of multiple series connection, and first direction touch control electrode unit and second direction touch control electrode unit all have void region; And one first insulation course and one second insulation course, touch control electrode layer is between the first insulation course and substrate, and substrate is between the first insulation course and the second insulation course; Article at least two, the input end of adjacent first direction touch control electrode or at least two adjacent second direction touch control electrode is interconnected, article at least two, the output terminal of adjacent first direction touch control electrode or at least two adjacent second direction touch control electrode is also interconnected, and input end and output terminal are respectively connected chip by a strip electrode connecting line.
Preferably, the another side of the relative touch control electrode layer of described substrate is provided with second direction touch control electrode web member, and each two adjacent second direction touch control electrode realize electrode conduction by second direction touch control electrode web member.
Preferably, described first direction touch control electrode unit and second direction touch control electrode unit are rhombus, king's font or radiation, void region is corresponding with the figure of first direction touch control electrode unit and second direction touch control electrode unit, and the area of void region is less than the area of first direction touch control electrode unit and second direction touch control electrode unit.
Preferably, described first insulation course and one second insulation course are dielectric ink.
Preferably, the input end of described any first direction touch control electrode is connected with the input end of another adjacent first direction touch control electrode, in like manner, its output terminal is also connected with output terminal, input end and output terminal are all connected chip by a strip electrode connecting line, and the connected mode of second direction touch control electrode is with first direction touch control electrode.
Preferably, described substrate is copper base, and thickness is 0.4-1.6mm.
Preferably, described first surface of insulating layer posts protective seam, and protective seam is Bao Maila, and thickness is 0.2-0.6mm.
Preferably, described first direction touch control electrode is arranged with second direction touch control electrode is mutually vertical, staggered complementary.
Preferably, described void region is added with suspension block, and suspension block all covers void region.
Preferably, the area of described void region is greater than the non-void region area of first direction touch control electrode unit and second direction touch control electrode unit, the width of first direction touch control electrode unit side and second direction touch control electrode unit side is set to 0.25-0.3mm, and the knots modification of the self-capacitance of first direction touch control electrode and second direction touch control electrode is greater than the knots modification of the mutual capacitance of adjacent first direction touch control electrode unit and second direction touch control electrode unit.
Compared with prior art, individual layer mutual capacitance Trackpad of the present invention by carrying out hollow part reason on first direction touch control electrode unit and second direction touch control electrode unit, form void region, reduce staff touch time and Trackpad between self-capacitance and each adjacent electrode unit between mutual capacitance, empirical tests, after adopting the hollow out process of the inventive method, the decrease of self-capacitance is greater than the decrease of mutual capacitance between each electrode unit, the input end of at least two adjacent first direction touch control electrode or at least two adjacent second direction touch control electrode is interconnected, chip is connected by a strip electrode connecting line, touch-control effect can be improved further, experience degree significantly promotes, in conventional design, draw as protective seam according to thin wheat, there will be comparatively significantly suspension problem, have influence on touch accuracy greatly, the present invention can solve suspension problem preferably, and structure is simple, achieve the lightening of Trackpad entirety simultaneously, and touch-control good hand touch.
[accompanying drawing explanation]
Fig. 1 is the layer structure schematic diagram of individual layer mutual capacitance Trackpad of the present invention.
Fig. 2 is the planar structure schematic diagram of touch control electrode layer in individual layer mutual capacitance Trackpad of the present invention.
Fig. 3 is the diagrammatic cross-section at A-A ' place in Fig. 2.
Fig. 4 is the model schematic touching circuit.
Fig. 5 is the another layer structure schematic diagram of individual layer mutual capacitance Trackpad of the present invention.
Fig. 6 is the schematic cross-section of touch control electrode in individual layer mutual capacitance Trackpad of the present invention.
Fig. 7 is the planar structure schematic diagram of individual layer mutual capacitance Trackpad second embodiment touch control electrode layer of the present invention.
Fig. 8 is the planar structure schematic diagram of individual layer mutual capacitance Trackpad the 3rd embodiment touch control electrode layer of the present invention.
[embodiment]
For making object of the present invention, technical scheme and advantage are clearly understood, below in conjunction with drawings and Examples, are further elaborated to the present invention.Should be appreciated that specific embodiment described herein only for explaining the present invention, and be not used in this invention of restriction.
Refer to Fig. 1 and Fig. 2, individual layer mutual capacitance Trackpad 1 of the present invention comprises substrate 13, touch control electrode layer 15, first insulation course 17 and the second insulation course 11, touch control electrode layer 15 comprises at least two first direction touch control electrode 151 and at least two second direction touch control electrode 153, first direction touch control electrode 151 and second direction touch control electrode 153 interlaced and be arranged at the same surface of substrate 13, first direction touch control electrode 151 comprises the first direction touch control electrode unit 1511 of multiple series connection, second direction touch control electrode 153 comprises the second direction touch control electrode unit 1531 of multiple series connection, and first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531 all have void region 155, touch control electrode layer 15 is between the first insulation course 17 and substrate 13, substrate 13 is between the first insulation course 17 and the second insulation course 11, article at least two, the input end of adjacent first direction touch control electrode 151 or at least two adjacent second direction touch control electrode 153 is interconnected, article at least two, the output terminal of adjacent first direction touch control electrode 151 or at least two adjacent second direction touch control electrode 153 is also interconnected, input end and output terminal are respectively connected chip 2 by a strip electrode connecting line 157, by carrying out hollow part reason on first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, form void region 155, reduce staff touch time and Trackpad between self-capacitance and each adjacent electrode unit between mutual capacitance, empirical tests, after adopting the hollow out process of the inventive method, the decrease of self-capacitance is greater than the decrease of mutual capacitance between each electrode unit, the input end of at least two adjacent first direction touch control electrode 151 or at least two adjacent second direction touch control electrode 153 is interconnected, chip 2 is connected by a strip electrode connecting line 157, touch-control effect can be improved further, experience degree significantly promotes.
Refer to Fig. 3 to Fig. 5, after hollow out process is carried out to first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, the non-void region of first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531 interacts and produces mutual capacitance, through experimental verification and data measuring and calculating, first direction touch control electrode unit side 15111 and second direction touch control electrode unit side 15311 can obtain preferably mutual capacitance, the decrease of self-capacitance is finally made to be greater than the decrease of mutual capacitance between each electrode unit, the effect of mutual capacitance is more outstanding, after such situation just ensure that hollow out process, do not affect normal touch-control, touch-control effect can be improved on the contrary, for ensureing product yield, the width of first direction touch control electrode unit side 15111 and second direction touch control electrode unit side 15311 is set to 0.25-0.3mm.
V1 is analog drive signal source, C1 and C1x is the mutual capacitance between touch point place electrode unit, its electric field is open, partition capacitance can be sucked away along with the close of finger, C1 represents the part that this electric capacity can not change, C1x represents that open electric field causes can reformed electric capacity, C2 is the coupling capacitance between finger and drive wire, C3 represents the coupling capacitance between finger and the line of induction, Ch is that human body is to the coupling capacitance between touch-screen system, testing circuit on Trackpad judges C1+C1x mutual capacitance according to detecting the electric current of induction end or electric charge, during finger touch, the capacitance of C1+C1x mutual capacitance can reduce, ideally, C1+C1x mutual capacitance can be reduced to C1, in any case Ch also can not be equivalent to short circuit, so when finger touch, by Ch, the levitation effect electric current that C1 and C2 determines can exist always, just vary in size, C2 and C3 is larger, then levitation effect electric current is larger, when detecting that C1+C1x is reduced to C1, induction current reduces, levitation effect electric current is the electric current increased, it can balance out the induction current of a part, thus affect normal touch, so C2 and C3 is the smaller the better.
Can obtain from capacitor's capacity and (C=ε S/4 π kd) the relation of other correlation parameters, touch pad is taken, without in suspension situation, d diminishes, C is larger, for Ch, to cause electric current easier from finger flow in system, levitation effect electric current falls little, suspension characteristic is better, to ensure that d is constant, reduction S is then only had to reduce capacitance, in order to improve because protect the suspension problem that wheat drawstring comes, from the model of single touch circuit, reduce finger to driving electric capacity C2 with to inductance capacitance C3, increasing Ch is helpful to improving suspension problem, but the pcb board of complete machine and battery have had enough large ground level, cannot start with from its area direction of increase, so the further room for improvement of Ch is very little, based on this, the key of dealing with problems still is the design of first direction touch control electrode 151 and second direction touch control electrode 153.
Refer to Fig. 6 to Fig. 8, the another side of the relative touch control electrode layer 15 of substrate 13 is provided with second direction touch control electrode web member 1533, each two adjacent second direction touch control electrode 1531 realize electrode conduction by second direction touch control electrode web member 1533, the importing of second direction touch control electrode web member 1533, change in traditional design, for the ease of the touch control electrode of both direction is arranged on the same face, and the bridge joint mode adopted, bridge joint mode needs additionally to add insulating material, improve cost, and need to adopt other technique, second direction touch control electrode web member 1533 is set separately in the one side of substrate 13 and can reaches good Electrode connection effect, do not affect overall appearance and Trackpad thickness.
First direction touch control electrode unit 1511 and second direction touch control electrode unit 1531 can be designed as rhombus, king's font or radiation, meanwhile, void region 155 is corresponding with the figure of first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, and the area of void region 155 is less than the area of first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, void region 155 with the first direction touch control electrode unit 1511 of reality and the pattern of second direction touch control electrode unit 1531 change and change.
The difference of second embodiment of the invention and the first embodiment is the pattern of touch control electrode layer 25, in touch control electrode layer 25, the first direction touch control electrode unit 2511 of each first direction touch control electrode 251 and second direction touch control electrode 253 and second direction touch control electrode unit 2531 are king's font, void region 255 is also king's font, first direction touch control electrode unit 2511 and second direction touch control electrode unit 2531 complementation interlaced with each other.
In third embodiment of the invention, each first direction touch control electrode 351 of touch control electrode layer 25 and the first direction touch control electrode unit 3511 of second direction touch control electrode 353 and second direction touch control electrode unit 3531 are radiation, externally launched by center, form multiple branch, can improve touch-control effect, its void region 355 is also king's font.
First insulation course 17 and the second insulation course 11 are dielectric ink, dielectric ink has good adhesion, high degree of flexibility, good printing and excellent silk-screen performance, without the need to adding thinning agent, and its colloid is 100% solid, first insulation course 17 and the second insulation course 11 can play good insulation effect, do not affect touch control operation.
Preferably, the input end of any first direction touch control electrode 151 is connected with the input end of another adjacent first direction touch control electrode 151, in like manner, its output terminal is also connected with output terminal, input end and output terminal are all connected chip 2 by a strip electrode connecting line 157, the connected mode of second direction touch control electrode 153 is with first direction touch control electrode 151, traditional connected mode is that single first direction touch control electrode 151 or second direction touch control electrode 153 are connected to chip at input end and output terminal by electrode connecting line 157 respectively, chip is connected by a strip electrode connecting line 157 by after two first direction touch control electrode 151 or second direction touch control electrode 153 parallel connection, the mutual capacitance between each electrode unit can be strengthened, and then improve touch-control effect, in actual production manufacture process, can also according to different situations and requirement, chip 2 is connected by a strip electrode connecting line 157 after parallel connection is carried out to the touch control electrode of adjacent three or four or more bar.
Substrate 13 is copper base 13, thickness is 0.4-1.6mm, copper base 13 is the one in metal substrate 13, heat-conducting effect is than aluminium base and iron substrate all good a lot of times, be applicable to heat radiation and architectural decoration that high-frequency circuit and high/low temperature change large area and accurate communication facilities, copper base 13 is also more suitable for the conventional mechanical processing such as boring, punching and cutting, and thickness is that the copper base 13 of 0.4-1.6mm is suitable for improving the performance solving suspension problem more.
Preferably; protective seam 19 is posted on first insulation course 17 surface, and protective seam 19 is thin mylar film, and thickness is 0.2-0.6mm; thin mylar film is adopted to reduce integral thickness; but also can bring suspension problem, the present invention, by the connection mode carrying out hollow out process and change between touch control electrode, can improve the suspension problem brought because adopting thin mylar film preferably; structure is simple; cost is low, and manufacture craft is uncomplicated, is applicable to extensively promoting the use of.
Preferably, first direction touch control electrode 151 and second direction touch control electrode 153 vertical setting mutually, staggered complementary, vertically disposed first direction touch control electrode 151 and the easier layout of second direction touch control electrode 153, more adapt to the squared design of Trackpad, and be conducive to improving the mutual capacitance between electrode unit.
Void region 155 is added with suspension block, suspension block all covers void region 155, owing to having carried out hollow out process to first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, when adopting thin mylar film, there will be the visual problem of development and the problem on deformation etc. of pcb board, by adding suspension block in void region 155, ensure that the integrality of the outward appearance of each first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, and the problem on deformation of visual problem and pcb board can be solved preferably.
The area of void region 155 is greater than the non-void region area of first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, the knots modification of the self-capacitance of first direction touch control electrode 151 and second direction touch control electrode 153 is greater than the knots modification of the mutual capacitance of adjacent first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, after hollow out process, the self-capacitance of first direction touch control electrode 151 and second direction touch control electrode 153 and the mutual capacitance of first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531 all can reduce, but, the knots modification of self-capacitance is greater than the knots modification of mutual capacitance, so final effect improves mutual capacitance, enhance touch-control effect.
Compared with prior art, individual layer mutual capacitance Trackpad 1 of the present invention by carrying out hollow part reason on first direction touch control electrode unit 1511 and second direction touch control electrode unit 1531, form void region 155, reduce staff touch time and Trackpad between self-capacitance and each adjacent electrode unit between mutual capacitance, empirical tests, after adopting the hollow out process of the inventive method, the decrease of self-capacitance is greater than the decrease of mutual capacitance between each electrode unit, the input end of at least two adjacent first direction touch control electrode 151 or at least two adjacent second direction touch control electrode 153 is interconnected, chip 2 is connected by a strip electrode connecting line 157, touch-control effect can be improved further, experience degree significantly promotes, in conventional design, draw as protective seam according to thin wheat, there will be comparatively significantly suspension problem, have influence on touch accuracy greatly, the present invention can solve suspension problem preferably, and structure is simple, achieve the lightening of Trackpad entirety simultaneously, and touch-control good hand touch.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within claims of the present invention.
Claims (10)
1. an individual layer mutual capacitance Trackpad, is characterized in that, comprising:
One substrate;
One touch control electrode layer, touch control electrode layer comprises at least two first direction touch control electrode and at least two second direction touch control electrode, first direction touch control electrode and second direction touch control electrode interlaced and be arranged at the same surface of substrate, first direction touch control electrode comprises the first direction touch control electrode unit of multiple series connection, second direction touch control electrode comprises the second direction touch control electrode unit of multiple series connection, and first direction touch control electrode unit and second direction touch control electrode unit all have void region; And
One first insulation course and one second insulation course, touch control electrode layer is between the first insulation course and substrate, and substrate is between the first insulation course and the second insulation course;
Article at least two, the input end of adjacent first direction touch control electrode or at least two adjacent second direction touch control electrode is interconnected, article at least two, the output terminal of adjacent first direction touch control electrode or at least two adjacent second direction touch control electrode is also interconnected, and input end and output terminal are respectively connected chip by a strip electrode connecting line.
2. individual layer mutual capacitance Trackpad as claimed in claim 1, it is characterized in that: the another side of the relative touch control electrode layer of described substrate is provided with second direction touch control electrode web member, each two adjacent second direction touch control electrode realize electrode conduction by second direction touch control electrode web member.
3. individual layer mutual capacitance Trackpad as claimed in claim 2, it is characterized in that: described first direction touch control electrode unit and second direction touch control electrode unit are rhombus, king's font or radiation, void region is corresponding with the figure of first direction touch control electrode unit and second direction touch control electrode unit, and the area of void region is less than the area of first direction touch control electrode unit and second direction touch control electrode unit.
4. individual layer mutual capacitance Trackpad as claimed in claim 1, is characterized in that: described first insulation course and one second insulation course are dielectric ink.
5. individual layer mutual capacitance Trackpad as claimed in claim 3, it is characterized in that: the input end of described any first direction touch control electrode is connected with the input end of another adjacent first direction touch control electrode, in like manner, its output terminal is also connected with output terminal, input end and output terminal are all connected chip by a strip electrode connecting line, and the connected mode of second direction touch control electrode is with first direction touch control electrode.
6. individual layer mutual capacitance Trackpad as claimed in claim 2, it is characterized in that: described substrate is copper base, thickness is 0.4-1.6mm.
7. individual layer mutual capacitance Trackpad as claimed in claim 4, it is characterized in that: described first surface of insulating layer posts protective seam, protective seam is Bao Maila, and thickness is 0.2-0.6mm.
8. individual layer mutual capacitance Trackpad as claimed in claim 3, is characterized in that: described first direction touch control electrode is arranged with second direction touch control electrode is mutually vertical, staggered complementary.
9. individual layer mutual capacitance Trackpad as claimed in claim 3, is characterized in that: described void region is added with suspension block, and suspension block all covers void region.
10. individual layer mutual capacitance Trackpad as claimed in claim 9, it is characterized in that: the area of described void region is greater than the non-void region area of first direction touch control electrode unit and second direction touch control electrode unit, the width of first direction touch control electrode unit side and second direction touch control electrode unit side is set to 0.25-0.3mm, and the knots modification of the self-capacitance of first direction touch control electrode and second direction touch control electrode is greater than the knots modification of the mutual capacitance of adjacent first direction touch control electrode unit and second direction touch control electrode unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610055480.0A CN105511650A (en) | 2016-01-27 | 2016-01-27 | Single-layer mutual-capacitance touch panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610055480.0A CN105511650A (en) | 2016-01-27 | 2016-01-27 | Single-layer mutual-capacitance touch panel |
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| CN105511650A true CN105511650A (en) | 2016-04-20 |
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| CN201610055480.0A Pending CN105511650A (en) | 2016-01-27 | 2016-01-27 | Single-layer mutual-capacitance touch panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107526484A (en) * | 2016-06-17 | 2017-12-29 | 三星电子株式会社 | Touch sensor and the electronic equipment including touch sensor |
| CN111625126A (en) * | 2020-05-11 | 2020-09-04 | 武汉华星光电半导体显示技术有限公司 | Display device, touch substrate and touch electrode layer |
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Application publication date: 20160420 |