CN103105990A - Monolayer capacitance touch sensor and touch control terminal - Google Patents
Monolayer capacitance touch sensor and touch control terminal Download PDFInfo
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- CN103105990A CN103105990A CN2013100283538A CN201310028353A CN103105990A CN 103105990 A CN103105990 A CN 103105990A CN 2013100283538 A CN2013100283538 A CN 2013100283538A CN 201310028353 A CN201310028353 A CN 201310028353A CN 103105990 A CN103105990 A CN 103105990A
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- cabling
- touch screen
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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
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
Abstract
The invention relates to the technical field of touch control, and provides a monolayer capacitance touch sensor. The monolayer capacitance touch sensor comprises a substrate, wherein a first electrode and a second electrode are arranged on the substrate and are both in the shape of metal grids. The invention further provides a touch terminal at the same time, and the touch terminal comprises the monolayer capacitance touch sensor. According to the monolayer capacitance touch sensor, the metal-grid-shaped electrodes are utilized; compared with a traditional Itochu (ITO) capacitance touch sensor, the impedance of the electrodes of the monolayer capacitance touch sensor is greatly lowered, the defects of trailing and wiring interference due to high impedance are overcome, meanwhile, signal attenuation of the monolayer capacitance touch sensor is reduced, and consistency of sensitivity of the monolayer capacitance touch sensor is improved; and further, compared with the traditional ITO capacitance touch sensor, the monolayer capacitance touch sensor in the shape of the metal grids can support drive signals with higher frequency and overcomes the defect that the ITO capacitance touch sensor is strong in low-frequency signal interference.
Description
[technical field]
The present invention relates to the touch technology field, particularly relate to a kind of individual layer capacitive touch screen and touch control terminal.
[background technology]
Traditional capacitive touch screen needs the multilayer conductive material structure usually, although some is only realized with the single layer of conductive material structure, but need to increase wire jumper to form X, two cross one another networks of dimension of Y at directions X-place, Y-direction point of crossing, namely require the electrode design of one of them dimension to become to carry out the structure of wire jumper on the electrode of another dimension, when making jumper wire construction, at first need to lay an insulation course in the position that intersects, and then the wire jumper that laying is formed by conductive material on insulation course, this wiring is very complicated, and craft precision is had relatively high expectations.In addition, existing capacitive touch sensors adopts ITO(Indium-Tin Oxide usually, and tin indium oxide is commonly referred to transparent conductive film) as conductive material, its light transmission is better.But also there is certain defective in this material, and namely its impedance is higher.Therefore, how to provide a kind of easy processing simple in structure, and the low individual layer capacitive touch screen of impedance, be present problem demanding prompt solution.
[summary of the invention]
The invention provides a kind of individual layer capacitive touch screen, be intended to solve the high technical matters of existing capacitive touch screen structural impedance.
The present invention adopts following technical scheme:
A kind of individual layer capacitive touch screen comprises a substrate, is laid with the first electrode and the second electrode on described substrate, and described the first electrode and the second electrode are the wire netting trellis.
The present invention also provides a kind of touch terminal, and described touch terminal adopts capacitive touch screen recited above.
Beneficial effect of the present invention is:
By the first electrode and the second electrode all are designed to the wire netting trellis, compare with conventional I TO capacitive touch screen, greatly reduce the impedance of touch sensor electrode, thereby the problems such as the high hangover that causes of impedance, cabling interference have been solved, reduce simultaneously the signal attenuation of touch sensor, improved touch sensor sensitivity consistance; Further, compare with conventional I TO capacitive touch screen, the capacitive touch screen of this wire netting trellis can be supported the driving signal of higher frequency, has solved the insoluble signal interference problem of ITO capacitive touch screen.
[description of drawings]
Fig. 1 is the wiring schematic diagram of the individual layer capacitive touch screen that provides of the embodiment of the present invention 1;
Fig. 2 is the first electrode in the embodiment of the present invention 1, the second electrode and interlock schematic diagram thereof;
Fig. 3 is the enlarged diagram of A part in Fig. 1;
Fig. 4 is the enlarged diagram of B part in Fig. 1;
Fig. 5 is the enlarged diagram of C part in Fig. 3;
Fig. 6 is that the wiring schematic diagram is amplified in the part of the individual layer capacitive touch screen that provides of the embodiment of the present invention 2.
Reference numeral:
The first electrode 1, the first electrode block 11,
The first electrode extension 111, the second electrodes 2,
The second electrode unit 21, the second electrode blocks 211,
The second electrode extension 2111, the second electrode cablings 22,
[embodiment]
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention provides a kind of individual layer capacitive touch screen, comprises a substrate, is laid with the first electrode and the second electrode on described substrate, and described the first electrode and the second electrode are the wire netting trellis.
The embodiment of the present invention also provides a kind of touch terminal, and this touch terminal adopts capacitive touch screen recited above.
The embodiment of the present invention is by all being designed to the wire netting trellis with the first electrode and the second electrode, adopt the block electrode structure of entity of ITO compared to existing technology, greatly reduce the impedance of touch sensor electrode, thereby the problems such as the high hangover that causes of impedance, cabling interference have been solved, reduce simultaneously the signal attenuation of touch sensor, improved touch sensor sensitivity consistance; Further, compare with conventional I TO capacitive touch screen, the capacitive touch screen of this wire netting trellis can be supported the driving signal of higher frequency, has solved the insoluble signal interference problem of ITO capacitive touch screen.
The embodiment of the present invention need not the trace width of the second electrode is carried out special design, and need not between the first electrode extension and the second electrode extension, the suspension piece to be set, perhaps the cabling of the zone between the first electrode extension and the second electrode extension and/or the second electrode is regional at least, and/or be filled with the independent wire netting trellis suspension piece that does not connect each other in the zone between adjacent the first electrode saturation plane in twos, the structure of whole sensor is more simple, easily processing.
Embodiment 1:
The embodiment of the present invention 1 provides a kind of individual layer capacitive touch screen.As shown in Figure 1, the present embodiment describes with the example that is applied as of this individual layer capacitive touch screen on mobile phone.Certainly, the individual layer capacitive touch screen that the present embodiment provides can also be applied to other touch control terminals, for example panel computer, various self-service terminals etc.
As Fig. 1～shown in Figure 3, this individual layer capacitive touch screen is laid with the second electrode 2 that some row are arranged along second direction along the first electrode 1 and the several rows of first direction arrangement on substrate, the first electrode cabling, the second electrode cabling 22 all lead to flexible printed circuit board (Flexible Printed Circuit, the FPC) (not shown) with the substrate binding.In the present embodiment, first direction is vertical direction, and second direction is horizontal direction.
As Fig. 1～shown in Figure 3, the first electrode 1 comprises the first electrode block 11 of laying along first direction, some the first electrode extensions 111 are extended take the first electrode block 11 in the same side at the first electrode block 11 as starting point to second direction, first direction and second direction are perpendicular.The second electrode 2 of every delegation comprises the second electrode unit 21 that quantity equates with the first electrode 1 columns; The second electrode unit 21 comprises the second electrode block 211 of laying along first direction, some the second electrode extension 2111, the second electrode extensions 2111 and the first electrode extension 111 phase interlocks are extended take the opposite direction of the second electrode block 211 as starting point to second direction in the same side at the second electrode block 211.Preferably, the quantity of the second electrode extension 2111 of each the second electrode unit 21 is 3～5, has 4 in the present embodiment.Spacing between the first electrode extension 111 and the second electrode extension 2111 is more than or equal to 0.1mm and less than or equal to 0.3mm.
The occlusal position of the first electrode extension 111 and the second electrode extension 2111 namely forms capacitance structure, take the first electrode 1 as induction electrode (being electrically connected to RX), the second electrode 2 is as drive electrode (being electrically connected to TX) as example, the first electrode extension 111 can be sensed the variation of electric charge on the second electrode extension 2111 in real time, need not wire jumper and can realize that single-layer touch detects.Arranging of formula back-to-back between the similar electrode that in Fig. 1, induction electrode and drive electrode are " drive-induction-induction-drive-drive-induction-induction-drive ... " in the horizontal direction.As shown in Figure 3 and Figure 5, be provided with suspension piece 3 in zone between first electrode 1 saturation plane adjacent with two row of the cabling district of the second electrode, be used for keeping flatness and the integral light-transmitting rate of whole substrate wiring, the piece 3 that wherein suspends refers to the electric independent metal wire without any the cabling connection, and saturation plane refers to electrode level and smooth one side fully.There is no cabling fully in zone between the first electrode 1 saturation plane.In the single layer of conductive material structure of the present embodiment, the shape with two kinds of electrode design are interlock forms capacitance structure by occlusion portion, and need not to design again wire jumper, and wiring is simplified, reduced to a certain extent the requirement to process conditions, simple in structure, easily processing.
As shown in Figure 3 and Figure 4, zone between the first electrode extension 111 and the second electrode extension 2111 also has suspension piece 3, and the gap that the first electrode block 11 in Fig. 3, the first electrode extension 111, the second electrode block 211, the second electrode extension 2111, suspension piece 3 and each suspension piece are 3 has namely consisted of a complete touch detection node.One of effect of suspension piece 3 be cause driving and respond between electric field more disperse, be conducive to touch and change; Effect be second can effectively reduce node section to drive the total area with induction, the undesired signal of importing induction into by finger in the suspension situation diminishes.
As shown in Figure 3 and Figure 4, the first electrode 1 and the second electrode 2 are the wire netting trellis.In the present embodiment, the first electrode 1 and the second electrode 2 are made by Nano Silver, assume diamond in shape latticed, in other embodiments, the first electrode 1 and the second electrode 2 can also be made by other metal materials, and present the grid of other shapes, for example square, triangle etc.The material of all cablings in above-mentioned suspension piece 3 and sensor (for example the first electrode cabling and the second electrode cabling 22) also can adopt and the first electrode 1, the second identical material of electrode 2, for example Nano Silver.This suspension piece 3 is the independent wire netting trellis suspension piece 3 that does not connect each other.Make the individual layer capacitive touch screen of wire netting trellis owing to adopting Nano Silver technique, compare the mode that adopts ITO, the impedance of the Nano Silver of wire netting trellis is low, need not the width of the second electrode cabling 22 is specifically designed, for example all trace width of the second electrode all can be consistent, and in the sensor that adopts ITO, because the ITO impedance is high, the second electrode cabling of sensor lower end part need to be widened, thereby reduces impedance.And, as shown in Figure 4 and Figure 5, suspension piece 3 in zone between first electrode 1 saturation plane adjacent with two row of zone between the first electrode extension 111 and the second electrode extension 2111, the cabling district of the second electrode can be all the independent wire netting trellis suspension piece 3 that is not connected each other, compare the mode of ITO, the structure of whole sensor is more simple, easily processing.
As Fig. 1～shown in Figure 3, the present embodiment adopts bilateral outlet method, is the IC position if select upper base, so just bottom drive wire (i.e. the second electrode cabling 22) out need to be guided to by the cabling of dual-side and is brought in.The present embodiment adopts two bases, up and down all to bind the Wiring structure of FPC, FPC is used for each second electrode unit 21 of every row the second electrode 2 is shorted to together, also be used for the second electrode 2 is caused testing circuit, need to carry out wire jumper during short circuit, this can be on FPC wire jumper, also can carry out wire jumper on substrate, the second electrode cabling 22 just proximad two bases up and down of substrate lead to corresponding FPC, the second electrode cabling 22 both sides are all adjacent with the second electrode 2, and the second electrode cabling 22 is positioned at the second electrode 2 saturation planes fully.The cabling that the second electrode 2 is all with it and the first electrode 1 are isolated, can be ground connection in scanning not, therefore the second electrode cabling 22 and 1 electric field of the first electrode are absorbed by the second electrode block 21 of centre fully, and mutual capacitance is zero, and when touching the cabling district, cabling does not have interfering data to produce fully.Simultaneously, this up and down two bases binding FPC can arrange the second electrode cabling 22 on the both sides, up and down, compare with the mode of monolateral outlet, and in onesize wiring zone, the second electrode cabling 22 quantity of bilateral outlet method can double, and have improved the linearity.As shown in Figure 3, in the present embodiment, the first electrode extension 111 and the second electrode extension 2111 are rectangular configuration.An effect of the symmetrical interlock of square type is to make the node capacitance profile more even, has increased the touch valid interval, another effect can reduce the first electrode 1 and cabling district effectively over against area, reduce the mutual capacitance between the first electrode 1 and cabling.
Embodiment 2:
The embodiment of the present invention 2 also provides a kind of individual layer capacitive touch screen.The difference of the present embodiment and embodiment 1 is: the zone of the present embodiment between the first electrode extension and the second electrode extension do not arrange the suspension piece.The below only sets forth the present embodiment part different from embodiment 1, and remainder will repeat no more because of similar to Example 1 herein.
As shown in Figure 6, the zone between the first electrode extension 111 and the second electrode extension 2111 does not arrange the suspension piece, and like this, the structure of whole sensor is more simple, convenient processing.Similar to embodiment 1 is, the suspension piece 3 in the zone between first electrode 1 saturation plane adjacent with two row of the cabling district of the second electrode be mutually between the independent suspension piece 3 of connection not.
Embodiment 3:
The embodiment of the present invention 3 provides another kind of individual layer capacitive touch screen.The present embodiment difference from Example 1 is: its substrate only has a base binding FPC, can be upper base or bottom, is preferably the base, and the second electrode cabling leads to this FPC.Identical with embodiment 1, the second electrode cabling both sides are all adjacent with the second electrode, and the second electrode is isolated with its all cablings and the first electrode, and when touching equally the cabling district, cabling does not have interfering data to produce fully.The highest 100ohm that is fitted to of mode optimum efficiency of this monolateral outlet.
Embodiment 4:
The embodiment of the present invention 4 provides a kind of touch terminal.As shown in Figure 1, this touch terminal 4 adopts the capacitive touch screen that in embodiment 1～embodiment 3, any one provides.In the present embodiment, this touch terminal 4 is mobile phone, and certainly, it can also be the touch terminal of other types, for example panel computer, various self-service terminals etc.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an individual layer capacitive touch screen, comprise a substrate, is laid with the first electrode and the second electrode on described substrate, it is characterized in that, described the first electrode and the second electrode are the wire netting trellis.
2. individual layer capacitive touch screen according to claim 1, it is characterized in that, described the first electrode comprises the first electrode block of laying along first direction, some the first electrode extensions are extended take described the first electrode block in the same side at described the first electrode block as starting point to second direction, described first direction and second direction are perpendicular; Described the second electrode comprises the second electrode block of laying along first direction, some the second electrode extensions are extended take the opposite direction of described the second electrode block as starting point to described second direction in the same side at described the second electrode block, described the second electrode extension and described the first electrode extension phase interlock.
3. individual layer capacitive touch screen according to claim 2, it is characterized in that, at least the zone between described the first electrode extension and described the second electrode extension, and/or the cabling of described the second electrode zone, and/or be filled with the suspension piece in the zone between adjacent the first electrode saturation plane in twos.
4. individual layer capacitive touch screen according to claim 3, is characterized in that, described suspension piece is the independent wire netting trellis suspension piece that does not connect each other.
5. individual layer capacitive touch screen according to claim 4, is characterized in that, the cabling of described the first electrode, the second electrode, the first electrode, the cabling of the second electrode and suspension piece are made by Nano Silver.
6. individual layer capacitive touch screen according to claim 1, it is characterized in that, flexible printed circuit board has all been bound on two bases up and down of described substrate, the cabling of described the second electrode just proximad two bases up and down of described substrate lead to corresponding flexible printed circuit board, the cabling both sides of described the second electrode are all adjacent with the second electrode, and the second electrode is isolated with cabling and described first electrode of all the second electrodes; Perhaps
One base binding of described substrate has flexible printed circuit board, the cabling of described the second electrode leads to described flexible printed circuit board, the cabling both sides of described the second electrode are all adjacent with the second electrode, and the second electrode is isolated with cabling and described first electrode of all the second electrodes.
7. according to claim 1～6 described individual layer capacitive touch screen of any one, is characterized in that, the spacing between described the first electrode extension and described the second electrode extension is more than or equal to 0.1mm and less than or equal to 0.3mm.
8. according to claim 1～6 described individual layer capacitive touch screen of any one, is characterized in that, described the first electrode extension and described the second electrode extension are rectangular configuration.
9. according to claim 1～6 described individual layer capacitive touch screen of any one, is characterized in that, described the first electrode is induction electrode, and described the second electrode is drive electrode.
10. a touch terminal, is characterized in that, described touch terminal adopts the described capacitive touch screen of claim 1～9 any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028353.8A CN103105990B (en) | 2013-01-25 | 2013-01-25 | Individual layer capacitive touch screen and touch control terminal |
| PCT/CN2013/089177 WO2014114148A1 (en) | 2013-01-25 | 2013-12-12 | Single-layer capacitive touch sensor and touch control terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310028353.8A CN103105990B (en) | 2013-01-25 | 2013-01-25 | Individual layer capacitive touch screen and touch control terminal |
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| CN103105990A true CN103105990A (en) | 2013-05-15 |
| CN103105990B CN103105990B (en) | 2016-08-31 |
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| CN201310028353.8A Active CN103105990B (en) | 2013-01-25 | 2013-01-25 | Individual layer capacitive touch screen and touch control terminal |
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| CN (1) | CN103105990B (en) |
| WO (1) | WO2014114148A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014114148A1 (en) * | 2013-01-25 | 2014-07-31 | 深圳市汇顶科技股份有限公司 | Single-layer capacitive touch sensor and touch control terminal |
| CN104063108A (en) * | 2014-07-03 | 2014-09-24 | 深圳市华星光电技术有限公司 | Mutual capacitance multi-point touch electrode structure based on single-layer metal grids |
| CN104731423A (en) * | 2013-12-20 | 2015-06-24 | 胜华科技股份有限公司 | Element substrate |
| CN104777939A (en) * | 2015-04-24 | 2015-07-15 | 昆山龙腾光电有限公司 | Touch panel |
| CN108614652A (en) * | 2016-12-13 | 2018-10-02 | 和鑫光电股份有限公司 | Touch panel |
| CN110001742A (en) * | 2018-01-05 | 2019-07-12 | 现代自动车株式会社 | Steering wheel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108217575A (en) * | 2017-12-11 | 2018-06-29 | 华南师范大学 | A kind of sensor and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014114148A1 (en) * | 2013-01-25 | 2014-07-31 | 深圳市汇顶科技股份有限公司 | Single-layer capacitive touch sensor and touch control terminal |
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| CN108614652B (en) * | 2016-12-13 | 2021-07-09 | 和鑫光电股份有限公司 | Touch panel |
| CN110001742A (en) * | 2018-01-05 | 2019-07-12 | 现代自动车株式会社 | Steering wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103105990B (en) | 2016-08-31 |
| WO2014114148A1 (en) | 2014-07-31 |
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