CN202815803U - Component of capacitive touch screen sensor - Google Patents
Component of capacitive touch screen sensor Download PDFInfo
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- CN202815803U CN202815803U CN 201220468482 CN201220468482U CN202815803U CN 202815803 U CN202815803 U CN 202815803U CN 201220468482 CN201220468482 CN 201220468482 CN 201220468482 U CN201220468482 U CN 201220468482U CN 202815803 U CN202815803 U CN 202815803U
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Abstract
The utility model discloses a component of a capacitive touch screen sensor. The component comprises a first transparent insulating substrate and a second transparent insulating substrate which are adhered with each other, wherein one faces of the first and second transparent insulating substrates are provided with corresponding first and second transparent conducting films respectively; the first and second transparent conducting films comprise a plurality of first and second electrodes which are uniformly arranged along the width direction and the length direction respectively; the first and second electrodes consist of a plurality of corresponding sensing units which are connected in series in sequence through transparent conducting wires; each first electrode is simultaneously perpendicular to each second electrode; the first and second sensing units are transverse H-shaped sensing units; each transverse H-shaped sensing unit consists of a first straight strip, a third straight strip and a second straight strip; the first straight strip and the third straight strip are parallel to each other; the second straight strip is perpendicular to the first straight strip and the third straight strip; and the two ends of the second straight strip are connected with central parts of the first straight strip and the third straight strip respectively. The component has the advantages of good anti-interference capacity, high touch sensitivity and the like.
Description
Technical field
The utility model relates to a kind of sensor, is specifically related to a kind of assembly of capacitive touch screen sensor, belongs to the touch screen technology field.
Background technology
Existing touch-screen is widely used on the electronic device terminals such as game machine, mobile phone, GPS as input equipment, and described touch-screen comprises infrared-type touch-screen, surface acoustic wave touch screen, resistive touch screen and capacitive touch screen.Existing capacitive touch screen is that the capacitance difference that produces when utilizing human body contact conductive film checks touch location, realized multi-point touch and convenient operation amplification, dwindle, spinfunction, therefore, favored by people.The sensing unit that the sensor that existing capacitive touch screen comprises has mostly is rhombus, cruciform, triangle, rectangle or hexagonal sensing unit are also arranged certainly, and the bad situation of homogeneity and consistance can appear in the sensing unit of above-mentioned shape in use, has the shortcomings such as poor anti jamming capability, touch-control sensitivity be low.
Summary of the invention
The purpose of this utility model is: the assembly that the good but also capacitive touch screen sensor that touch-control is highly sensitive of a kind of not only antijamming capability is provided.
In order to achieve the above object, the technical solution of the utility model is: a kind of assembly of capacitive touch screen sensor, and its innovative point is:
A, comprise the first transparent insulation base material and the second transparent insulation base material, and the first transparent insulation base material is mutually bonding with the second transparent insulation base material, the one side of described the first transparent insulation base material is provided with the first nesa coating, and the one side of the second transparent insulation base material is provided with the second nesa coating;
The first nesa coating of b, described the first transparent insulation base material one side comprises the first electrode that several are evenly arranged on the Width, and described the first electrode is followed in series to form by the first electrically conducting transparent line by a plurality of the first sensing units;
The second nesa coating of c, described the second transparent insulation base material another side comprises the second electrode that is evenly arranged on several alongst, and described the second electrode is followed in series to form by the second electrically conducting transparent line by a plurality of the second sensing units;
D, each first electrode are simultaneously mutually vertical with each second electrode; The first sensing unit of described the first electrode and the second sensing unit of the second electrode all are sensing units of I shape shape;
The sensing unit of e, described I shape shape is by the first vertical bar parallel to each other and the 3rd vertical bar, and consist of perpendicular to the second vertical bar of the first vertical bar and the 3rd vertical bar, and the two ends of the second vertical bar are connected with the central part of the first vertical bar and the central part of the 3rd vertical bar respectively.
In technique scheme, the width L ' of the second sensing unit of the I shape shape of the width L of the first sensing unit of the I shape shape of described the first electrode and the ratio of length H and the second electrode and being in equal proportions of length H '.
In technique scheme, the width L of the first sensing unit of the I shape shape of described the first electrode and the ratio of length H are 0.5 ~ 2; The width L ' of the second sensing unit of the I shape shape of described the second electrode is 0.5 ~ 2 with the ratio of length H '.
In technique scheme, the spacing between second sensing unit adjacent with alongst going up of the second electrode of the spacing between adjacent first sensing unit on the Width of described the first electrode equates.
In technique scheme, the spacing between adjacent first sensing unit on the Width of described the first electrode is 4 ~ 10mm; The spacing that alongst goes up between the second adjacent sensing unit of described the second electrode is 4 ~ 10mm.
In technique scheme, described the first electrically conducting transparent line is that the I shape central axis along the first electrode is connected; The second electrically conducting transparent line is that the I shape central axis along the second electrode is connected; Described the first electrically conducting transparent line is mutually vertical with the second electrically conducting transparent line, and the mid point a of the first electrically conducting transparent line
0Mid point b with the second electrically conducting transparent line
0Line a
0b
0, both perpendicular to the first electrically conducting transparent line, again perpendicular to the second electrically conducting transparent line.
In technique scheme, described the first transparent insulation base material and the second transparent insulation base material are both the transparent membrane base material, or clear glass substrate; Perhaps the first transparent insulation base material is the transparent membrane base material, and the second transparent insulation base material is clear glass substrate.
In technique scheme, described the first nesa coating and the second nesa coating are indium tin oxide conductive films, or the graphene conductive film, or the antimony tin conducting film.
In technique scheme, the second nesa coating of the first nesa coating of described the first transparent insulation base material and the second transparent insulation base material is in the same way or in opposite directions or be reverse.
The good effect that the utility model has is: because sensing unit of the present utility model has adopted the sensing unit of I shape shape, and the both sides area of the sensing unit of I shape shape is larger, and each first electrode is simultaneously mutually vertical with each second electrode, so that the overlapping area of the first electrode and the second electrode is minimum; During use, several first electrodes and several second electrodes are electrically connected with the corresponding link of soft drive circuit by silver slurry line respectively, meeting during touch-control is so that nesa coating forms electrostatic field, when being user's multi-point touch, the first sensing unit by detecting several the first electrodes that are evenly arranged along Width respectively with the second sensing unit of the second electrode that alongst is evenly arranged accordingly, the variation of the coupling capacitance of square crossing place is identified user's position of touch with this mutually; If during finger touch, then coupling capacitance also can reduce, if when pointing even move left and right, then finger can be realized reducing uniformly or increasing with the contact area of the sensing unit of I shape shape, reached the purpose of contact area even variation, so that the accuracy of position of touch identification is high; Thereby electric field resistance of the present utility model is more even, has the strong and highly sensitive advantage of touch-control of antijamming capability.
Description of drawings
Fig. 1 is the first structural representation of the assembly of the utility model capacitive touch screen sensor;
Fig. 2 is the second structural representation of the assembly of the utility model capacitive touch screen sensor;
Fig. 3 is the third structural representation of the assembly of the utility model capacitive touch screen sensor;
Fig. 4 is the 4th kind of structural representation of the assembly of the utility model capacitive touch screen sensor;
Fig. 5 is the first electrode of the present utility model and the arrange synoptic diagram of the second electrode on nesa coating;
Fig. 6 is the structural representation of the first electrode among Fig. 5;
Fig. 7 is the structural representation of the second electrode among Fig. 5;
Fig. 8 is the structural representation of the sensing unit of I shape shape of the present utility model;
Fig. 9 is the A section enlarged diagram of Fig. 5;
Figure 10 is the B section enlarged diagram of Fig. 5;
Mathematics parabola model figure when Figure 11 is the utility model touch-control;
Figure 12 is that synoptic diagram is arranged in the space of the first electrically conducting transparent line of the present utility model and the second electrically conducting transparent DNA mitochondrial DNA.
Embodiment
Below in conjunction with accompanying drawing and the embodiment that provides, the utility model is further described, but is not limited to this.
Shown in Fig. 1 ~ 10, a kind of assembly of capacitive touch screen sensor, comprise the first transparent insulation base material 1 and the second transparent insulation base material 1 ', and the first transparent insulation base material 1 is mutually bonding with the second transparent insulation base material 1 ' by optical cement, the one side that the one side of described the first transparent insulation base material 1 is provided with the first nesa coating 2, the second transparent insulation base materials 1 ' is provided with the second nesa coating 2 '; The first nesa coating 2 of described the first transparent insulation base material 1 one side comprises the first electrode 2-1 that several are evenly arranged on the Width, and described the first electrode 2-1 is followed in series to form by the first electrically conducting transparent line 2a by a plurality of the first sensing unit 2-1-1; The second nesa coating 2 ' of described the second transparent insulation base material 1 ' another side comprises the second electrode 2-2 that is evenly arranged on several alongst, and described the second electrode 2-2 is followed in series to form by the second electrically conducting transparent line 2b by a plurality of the second sensing unit 2-2-1; Each first electrode 2-1 is simultaneously mutually vertical with each second electrode 2-2; The first sensing unit 2-1-1 of described the first electrode 2-1 and the second sensing unit 2-2-1 of the second electrode 2-2 all are sensing units of I shape shape; The sensing unit of described I shape shape is by the first vertical bar 21 parallel to each other and the 3rd vertical bar 23, and consist of perpendicular to the second vertical bar 22 of the first vertical bar 21 and the 3rd vertical bar 23, and the two ends of the second vertical bar 22 are connected with the central part of the first vertical bar 21 and the central part of the 3rd vertical bar 23 respectively.
Shown in Fig. 9,10, for so that the rationality of the utility model structure, and the homogeneity that guarantees electric field resistance between the adjacent sensing unit, the second width L ' of sensing unit 2-2-1 of the I shape shape of the width L of the first sensing unit 2-1-1 of the I shape shape of described the first electrode 2-1 and the ratio of length H and the second electrode 2-2 and being in equal proportions of length H '.The width L of the first sensing unit 2-1-1 of the I shape shape of described the first electrode 2-1 and the ratio of length H are 0.5 ~ 2; The width L ' of the second sensing unit 2-2-1 of the I shape shape of described the second electrode 2-2 is 0.5 ~ 2 with the ratio of length H '.
Shown in Fig. 5,6,7, in order further to improve the homogeneity of electric field resistance between the adjacent sensing unit, the spacing between the second sensing unit 2-2-1 adjacent with alongst going up of the second electrode 2-2 of the spacing between adjacent the first sensing unit 2-1-1 on the Width of described the first electrode 2-1 equates.Spacing between adjacent the first sensing unit 2-1-1 on the Width of described the first electrode 2-1 is 4 ~ 10mm; The spacing that alongst goes up between the second adjacent sensing unit 2-2-1 of described the second electrode 2-2 is 4 ~ 10mm.
Shown in Fig. 5,6,7,12, described the first electrically conducting transparent line 2a is that the I shape central axis (being the central axis of the 3rd vertical bar 23 of the sensing unit of I shape shape) along the first electrode 2-1 is connected; The second electrically conducting transparent line 2b is that the I shape central axis (being the central axis of the 3rd vertical bar 23 of the sensing unit of I shape shape) along the second electrode 2-2 is connected; Described the first electrically conducting transparent line 2a is mutually vertical with the second electrically conducting transparent line 2b, and the mid point a of the first electrically conducting transparent line 2a
0Mid point b with the second electrically conducting transparent line 2b
0Line a
0b
0, both perpendicular to the first electrically conducting transparent line 2a, again perpendicular to the second electrically conducting transparent line 2b.The first electrically conducting transparent line 3a of the present utility model and the second electrically conducting transparent line 3b and do not connect between the two not at grade.
The first transparent insulation base material 1 described in the utility model and the second transparent insulation base material 1 ' are both the transparent membrane base material, or clear glass substrate; Perhaps the first transparent insulation base material 1 is the transparent membrane base material, and the second transparent insulation base material 1 ' is clear glass substrate.Described the first nesa coating 2 and the second nesa coating 2 ' are indium tin oxide conductive films, or the graphene conductive film, or the antimony tin conducting film.
Shown in Fig. 1,2,3,4, the first nesa coating 2 of described the first transparent insulation base material 1 and the second nesa coating 2 ' of the second transparent insulation base material 1 ' are in the same way or in opposite directions or be reverse.
Principle of work of the present utility model: when the utility model uses, several first electrodes 2-1 and several second electrodes 2-2 are electrically connected with the corresponding I/O mouth of MCU processing integrated chip of soft drive circuit by silver slurry line respectively, when if finger does not touch nesa coating 2, between the first sensing unit 2-1-1 of described the first electrode 2-1 adjacent I shape shape on the Width, the second electrode 2-2 alongst goes up the second sensing unit 2-2-1 of adjacent I shape shape, and first electrode 2-1 between the second sensing unit 2-2-1 of the first sensing unit 2-1-1 of the I shape shape of Width and the second electrode 2-2 I shape shape alongst and ground, have stray capacitance, this electric capacity is defined as Cx; If finger touch is during to nesa coating 2, can produce a coupling capacitance Cf between the first sensing unit 2-1-1 of the first electrode 2-1 and the second sensing unit 2-2-1 of the second electrode 2-2 and the finger, the total capacitance that produce this moment is Ct, be the total capacitance Ct=Cx+Cf that the finger touch capacitance plate produces, the soft drive circuit detects the difference Cf of the electric capacity of this position of finger touch capacitance plate by processing, touches particular location thereby identify.
The second sensing unit 2-2-1 of each the I shape shape that alongst goes up that the first sensing unit 2-1-1 of each the I shape shape on the Width that described the first electrode 2-1 is included and the second electrode 2-2 are included produce electric capacity (electrode) size be by finger touch to the contact area size decision of touch-screen, its computing formula is Cf=ε * ε.*S/d，
Wherein, S: for the finger with electrode block over against area;
D: be the distance between finger and the electrode block;
ε。: be permittivity of vacuum, ε.=8.854 187 818 * 10-12 farads/rice (F/m);
ε is the specific inductive capacity of material, and the specific inductive capacity of commaterial is a fixed value;
This shows: capacitor C f be directly proportional over against area;
Because the first electrode 2-1 described in the utility model connects by the first electrically conducting transparent line 2a along the first adjacent sensing unit 2-1-1 of Width; Described the second electrode 2-2 alongst adjacent the second sensing unit 2-2-1 by the second electrically conducting transparent line 2b series connection; Guaranteed like this area minimum (as shown in Figure 5) of the first electrode 2-1 and the second electrode 2-2 two superimposed, and according to the formula of above-mentioned electric capacity: C=ε * ε.* S/d learns, when the value of inductance capacitance value Cf in constant situation, the value of stray capacitance Cx is less; And according to the computing formula of signal to noise ratio (S/N ratio) d: d=Cf/Cx as can be known, it is larger that signal to noise ratio (S/N ratio) d can become; Therefore, the utility model is compared with traditional capacitive touch sensors, has greatly improved signal to noise ratio (S/N ratio) d, so that touch function of the present utility model is sensitiveer, antijamming capability is stronger.
Such as Fig. 9, shown in 10, two parts area of the width L ' of the width L of the first sensing unit 2-1-1 of the first electrode 2-1 of the present utility model and the second sensing unit 2-2-1 of the second electrode 2-2 is larger, and laterally evenly, the utility model and finger contact area have greatly been increased, when evenly moving about finger, realized that contact area changes uniform purpose, so that the capacitance variation coordinate diagram of the sensing unit of I shape shape (electrode) approaches para-curve mathematical model as shown in figure 11 more, the assembly of guaranteeing capacitive touch screen sensor of the present utility model is more accurate through the position coordinates that processor (MCU) calculates, and the linearity is better; And reduced the resistance of whole sensing unit (electrode) passage, principle according to the included MCU detection of soft drive circuit, the frequency that sensing unit (electrode) is discharged and recharged is: f=1/ (R*C), wherein, R is the resistance value of sensing unit (electrode) passage, and C is the capacitance that sensing unit (electrode) produces; In the constant situation of sensing unit (electrode) capacitance C, resistance R is less, the included MCU of soft drive circuit is faster to the frequency f that sensing unit (electrode) discharges and recharges, therefore, the reaction velocity of the capacitive touch screen of the sensing unit of the designed I shape shape of the utility model is just faster.Traditional capacitive touch screen is all very harsh in ohmically requirement, and a lot of producers require the resistance of sensing unit (electrode) passage below 10K; If the surface resistance of the tin indium oxide of selecting (ITO) material is in the situation in 200 Europe, much sensing unit (electrode) electrode of other figure (cruciform, triangle, bar shaped etc.) is not all realized this requirement, in order to realize the low requirement of single sensing unit (electrode) aisle resistance, only has low tin indium oxide (ITO) conductive material of the surface resistance of employing, and low tin indium oxide (ITO) conductive material of general surface resistance not only price is very high, and because low tin indium oxide (ITO) the conductive material wound easy to break of resistance has also increased technology difficulty greatly; And the designed I shape sensing unit (electrode) of the utility model also can satisfy the requirement of whole passage resistance below 10K can be implemented in the above conductive material in surface resistance 200 Europe the time, therefore, greatly reduces its production cost.
The utility model has not only improved the reaction velocity of touch-control, and has reduced production cost.Compared with prior art can adopt the higher tin indium oxide of resistance (ITO) conductive material, that is because of high tin indium oxide (ITO) the conductive material wound not easy to break of resistance, so the utility model has also reduced the difficulty of explained hereafter.
The assembly of capacitive touch screen sensor of the present utility model is not limited on the capacitive touch screen of the various electronic equipments such as digital camera, navigating instrument, mobile phone, palm PC, also is applicable in other different technical field on the required use capacitive touch screen.
Claims (9)
1. the assembly of a capacitive touch screen sensor is characterized in that:
A, comprise the first transparent insulation base material (1) and the second transparent insulation base material (1 '), and the first transparent insulation base material (1) is mutually bonding with the second transparent insulation base material (1 '), the one side of described the first transparent insulation base material (1) is provided with the first nesa coating (2), and the one side of the second transparent insulation base material (1 ') is provided with the second nesa coating (2 ');
First nesa coating (2) of b, described the first transparent insulation base material (1) one side comprises the first electrode (2-1) that several are evenly arranged on the Width, and described the first electrode (2-1) is followed in series to form by the first electrically conducting transparent line (2a) by a plurality of the first sensing units (2-1-1);
The second nesa coating (2 ') of c, described the second transparent insulation base material (1 ') another side comprises the second electrode (2-2) that is evenly arranged on several alongst, and described the second electrode (2-2) is followed in series to form by the second electrically conducting transparent line (2b) by a plurality of the second sensing units (2-2-1);
D, each first electrode (2-1) are mutually vertical with each second electrode (2-2) simultaneously; First sensing unit (2-1-1) of described the first electrode (2-1) and second sensing unit (2-2-1) of the second electrode (2-2) all are sensing units of I shape shape;
The sensing unit of e, described I shape shape is by the first vertical bar (21) parallel to each other and the 3rd vertical bar (23), and consist of perpendicular to second vertical bar (22) of the first vertical bar (21) and the 3rd vertical bar (23), and the two ends of the second vertical bar (22) are connected with the central part of the first vertical bar (21) and the central part of the 3rd vertical bar (23) respectively.
2. the assembly of capacitive touch screen sensor according to claim 1 is characterized in that: the width L ' of the second sensing unit (2-2-1) of the I shape shape of the width L of first sensing unit (2-1-1) of the I shape shape of described the first electrode (2-1) and the ratio of length H and the second electrode (2-2) and being in equal proportions of length H '.
3. the assembly of capacitive touch screen sensor according to claim 1 and 2, it is characterized in that: the width L of first sensing unit (2-1-1) of the I shape shape of described the first electrode (2-1) and the ratio of length H are 0.5 ~ 2; The width L ' of second sensing unit (2-2-1) of the I shape shape of described the second electrode (2-2) is 0.5 ~ 2 with the ratio of length H '.
4. the assembly of capacitive touch screen sensor according to claim 1 is characterized in that: the spacing between second sensing unit (2-2-1) adjacent with alongst going up of the second electrode (2-2) of the spacing between adjacent first sensing unit (2-1-1) on the Width of described the first electrode (2-1) equates.
5. it is characterized in that according to claim 1 or the assembly of 4 described capacitive touch screen sensor: the spacing between adjacent first sensing unit (2-1-1) on the Width of described the first electrode (2-1) is 4 ~ 10mm; The spacing that alongst goes up between adjacent the second sensing unit (2-2-1) of described the second electrode (2-2) is 4 ~ 10mm.
6. the assembly of capacitive touch screen sensor according to claim 1 is characterized in that: described the first electrically conducting transparent line (2a) is that the I shape central axis along the first electrode (2-1) is connected; The second electrically conducting transparent line (2b) is that the I shape central axis along the second electrode (2-2) is connected; Described the first electrically conducting transparent line (2a) is mutually vertical with the second electrically conducting transparent line (2b), and the mid point a of the first electrically conducting transparent line (2a)
0Mid point b with the second electrically conducting transparent line (2b)
0Line a
0b
0, both perpendicular to the first electrically conducting transparent line (2a), again perpendicular to the second electrically conducting transparent line (2b).
7. the assembly of capacitive touch screen sensor according to claim 1, it is characterized in that: described the first transparent insulation base material (1) and the second transparent insulation base material (1 ') are both the transparent membrane base material, or clear glass substrate; Perhaps the first transparent insulation base material (1) is the transparent membrane base material, and the second transparent insulation base material (1 ') is clear glass substrate.
8. the assembly of capacitive touch screen sensor according to claim 1, it is characterized in that: described the first nesa coating (2) and the second nesa coating (2 ') are indium tin oxide conductive films, or graphene conductive film, or antimony tin conducting film.
9. the assembly of capacitive touch screen sensor according to claim 1 is characterized in that: first nesa coating (2) of described the first transparent insulation base material (1) and the second nesa coating (2 ') of the second transparent insulation base material (1 ') are in the same way or in opposite directions or be reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468482 CN202815803U (en) | 2012-09-14 | 2012-09-14 | Component of capacitive touch screen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468482 CN202815803U (en) | 2012-09-14 | 2012-09-14 | Component of capacitive touch screen sensor |
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| Publication Number | Publication Date |
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| CN202815803U true CN202815803U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220468482 Expired - Fee Related CN202815803U (en) | 2012-09-14 | 2012-09-14 | Component of capacitive touch screen sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279239A (en) * | 2013-05-24 | 2013-09-04 | 重庆绿色智能技术研究院 | Grapheme capacitive touch screen |
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2012
- 2012-09-14 CN CN 201220468482 patent/CN202815803U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279239A (en) * | 2013-05-24 | 2013-09-04 | 重庆绿色智能技术研究院 | Grapheme capacitive touch screen |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20150914 |
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| EXPY | Termination of patent right or utility model |