CN203178952U - Touch sensing element and touch screen - Google Patents
Touch sensing element and touch screen Download PDFInfo
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- CN203178952U CN203178952U CN 201320003079 CN201320003079U CN203178952U CN 203178952 U CN203178952 U CN 203178952U CN 201320003079 CN201320003079 CN 201320003079 CN 201320003079 U CN201320003079 U CN 201320003079U CN 203178952 U CN203178952 U CN 203178952U
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Abstract
A touch sensing element comprises an insulating layer, a sensing layer and a driving layer, wherein the insulating layer is provided with a first surface, and a second surface opposite to the first surface. The sensing layer is located on the first surface and is formed by a set of sensing traces which are arranged at intervals and are not overlapped along a first dimension of a two-dimensional coordinate system in an array mode. The driving layer is located on the second surface and formed by a set of driving traces, a set of shielding traces and a plurality of conductive leads, wherein the driving traces and the shielding traces are arrayed along a second dimension of the two-dimensional coordinate system, the driving traces and the sensing traces are overlapped, the driving traces and the shielding traces are arranged at intervals and not overlapped, and each conductive lead is electrically connected with one driving trace. The touch sensing element can lower influences of noise capacitance of an LCD on a whole touch screen, and the utility model further provides the touch screen.
Description
Technical field
The utility model relates to a kind of touch sensible element and uses the touch-screen of this touch sensible element.
Background technology
Touch-screen is widely used in various electronic installations as a kind of simple man-machine interaction mode, as mobile phone, and IPAD etc.
Touch-screen generally includes panel and is attached at the touch sensible element of this panel one side, this touch sensible element by insulation course and be positioned at this insulation course relative two surfaces inductive layer with drive layer.This inductive layer comprises some induction traces that do not intersect and extend along first direction, and this drivings layer comprises some do not intersect and along the driving trace of second direction extension.This first direction and second direction are not parallel.Described induction trace is spaced apart by this insulation course with the driving trace, is equivalent to two battery lead plates of capacitor.Each induction trace forms sense node with corresponding driving trace in the intersection region.Work as touch objects, during as this panels of contact such as finger, screen touch pens, cause the capacitance variations at this sense node place, thereby realize the execution of determining and touch instruction of touch location.
The touch-screen of this structure is subjected to the influence of external electrical field in use easily, cause the sensitivity of touch-screen to reduce, for example, this touch-screen is when fitting in the liquid crystal display screen surfaces, and the electric field of LCDs self can influence the inductance capacitance that drives trace and induction trace strongly.In view of this, the driving trace that drives layer in this touch-screen is designed to have bigger width and usually between external electrical field and induction trace, with the electric field of shielding liquid crystal indicator (LCD) to responding to the influence of trace.Yet when driving trace and have big width, it is arranged in external electrical field, can cause great influence to the inductance capacitance that drives trace and induction trace equally.
The utility model content
Based on this, be necessary the touch-screen that provides a kind of electric field to external world to have the touch sensible element of preferable shield effectiveness and use this touch sensible element.
A kind of touch sensible element comprises:
Insulation course has first surface and reaches and described first surface opposing second surface;
Inductive layer is positioned at described first surface, and described inductive layer is arranged along first dimension of two-dimensional coordinate system by one group of space and nonoverlapping induction trace and formed; And
Drive layer, be positioned at described second surface, described driving layer covers trace and some conductive lead wires by one group of driving trace, group screen, described driving trace and shield traces are alternately arranged along second dimension of two-dimensional coordinate system and are formed, described driving trace and described induction trace are overlapping mutually, described driving trace and described shield traces space and not overlapping, each described conductive lead wire is electrically connected with a described driving trace.
Therein among embodiment, described driving trace and shield traces be strip linearly all, and described driving trace equates with the shield traces width.
Therein among embodiment, described inductive layer comprises that also one group of inductive layer assists trace, the auxiliary trace of described inductive layer and described induction trace are alternately arranged along first dimension of described two-dimensional coordinate system, the auxiliary trace of described inductive layer and described induction trace space and not overlapping, the auxiliary trace of each bar inductive layer are arranged along second dimension of described two-dimensional coordinate system by a plurality of conducting blocks and are formed.
Among embodiment, the overlapping zone of described induction trace and described driving trace and shield traces offers through hole, is provided with conducting block in the described through hole therein.
Among embodiment, be provided with two conducting blocks in each through hole therein.
Among embodiment, described conducting block is rectangle, circle, parallelogram, trapezoidal or triangle therein.
Therein among embodiment, the described layer that drives also comprises the auxiliary trace of the driving layer that is arranged between described driving trace and the described shield traces, the auxiliary trace of described driving layer arranged along first dimension of described two-dimensional coordinate system by a plurality of conducting blocks and formed the described driving auxiliary trace of layer and described driving trace mutually insulated.
Among embodiment, the auxiliary trace of described driving layer falls into described induction trace in the orthogonal projection of described inductive layer therein.
A kind of touch-screen comprises above-mentioned touch sensible element.
Among embodiment, described touch-screen also comprises the panel that is covered in described inductive layer surface therein.
Above-mentioned touch sensible element and touch-screen, because driving driving trace and the shield traces of layer is arranged alternately, drive trace and shield traces shield LCD simultaneously for the induction trace noise electric capacity, but because shield traces and being free of attachment in the circuit, therefore can reduce the noise electric capacity of LCD to the influence of whole touch screen, electric field has preferable shield effectiveness to external world.
Description of drawings
Fig. 1 is the structural representation of the touch-screen of an embodiment;
Fig. 2 is the structural representation of the touch sensible element of touch-screen among Fig. 1;
Fig. 3 is the part structure for amplifying synoptic diagram of the inductive layer of the touch sensible element among Fig. 2;
Fig. 4 is the structural representation of the driving layer of the touch sensible element among Fig. 2;
Fig. 5 is the structural representation of the touch-screen of another embodiment.
Embodiment
For the ease of understanding the utility model, with reference to relevant drawings the utility model is described more fully below.Provided first-selected embodiment of the present utility model in the accompanying drawing.But the utility model can be realized with many different forms, be not limited to embodiment described herein.On the contrary, providing the purpose of these embodiment is to make to disclosure of the present utility model more thoroughly comprehensively.
Need to prove that when element is called as " being fixedly arranged on " another element, can directly can there be element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be to be directly connected to another element or may to have element placed in the middle simultaneously.Term as used herein " vertical ", " level ", " left side ", " right side " and similar statement are just for illustrative purposes.
Unless otherwise defined, the employed all technology of this paper are identical with the implication that belongs to those skilled in the art's common sense of the present utility model with scientific terminology.Employed term is not intended to be restriction the utility model just in order to describe the purpose of specific embodiment in instructions of the present utility model herein.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
See also Fig. 1, the touch-screen 100 of an embodiment comprises touch sensible element 10 and panel 170.Touch sensible element 10 comprises insulation course 110, inductive layer 130 and drives layer 150.Certainly, touch-screen 100 also comprises other elements such as circuit board, does not give unnecessary details one by one at this.
Below in conjunction with Fig. 2 the one-piece construction of this touch sensible element 10 is described, Fig. 2 has used foreshortened figure, drives position and the size relationship of layer 150 with inductive layer among the demonstration embodiment directly perceived 130 and this.In this touch sensible element 10, this inductive layer 130 drives the relative both sides of layer 150 this insulation course 110 of separation with this.Please consult Fig. 1 and Fig. 3 simultaneously, inductive layer 130 is positioned at first surface 112.Inductive layer 130 is formed by the first dimension X arrangement of some induction traces 132 along two-dimensional coordinate system, and a plurality of induction traces 132 spaces and not overlapping.Induction trace 132 is made by conductive material, as transparent ITO (tin indium oxide), metal grid lines, carbon nano-tube etc.
Please consult Fig. 2 and Fig. 4 simultaneously, driving layer 150 is tieed up Y by some driving traces 152 and some shield traces 154 along second of two-dimensional coordinate system and is alternately arranged, and namely drives trace 152 and shield traces 154 according to 152,154,152,154,152,154,152 ... order along two-dimensional coordinate system second the dimension Y arrange successively.Drive trace 152 and shield traces 152 spaces and not overlapping.Drive formation one clearance for insulation 156 between trace 152 and the adjacent shield traces 154.In the present embodiment, drive trace 152 and shield traces 154 and all be roughly strip and tie up direction X extension along first.Preferably, driving trace 152 equates with shield traces 154 width.Drive trace 152 and shield traces 154 and make by conductive material, as transparent ITO (tin indium oxide), metal grid lines, carbon nano-tube etc.Driving trace 152 is electrically connected with the circuit board (not shown) by conductive lead wire 157.154 of shield traces and driving trace 152 and conductive lead wire 157 insulation.
Further, drive layer 150 and also comprise the auxiliary trace 158 of the driving layer that places between driving trace 152 and the shield traces 154.Driving the auxiliary trace 158 of layer is located in the clearance for insulation 156.Driving the auxiliary trace 158 of layer is formed by the first dimension X arrangement of a plurality of conducting blocks 1582 along two-dimensional coordinate system.Preferably, drive the auxiliary trace 158 of layer and fall into induction trace 132 in the orthogonal projection of inductive layer 130.In the present embodiment, conducting block 1582 is roughly rectangle and all identical with shape and the size of conducting block 1342.Certainly in other embodiments, the shape of conducting block 1582 with greatly can be different less than conducting block 1342, conducting block 1582 can also be circle, parallelogram, trapezoidal or triangle.
Please consult Fig. 2 and Fig. 3 simultaneously, further, induction trace 132 and driving trace 152 and shield traces 154 overlapping zones offer through hole 1322, are provided with conducting block 1324 in the through hole 1322.Preferably, each overlapping region offers two through holes 1322, is provided with two conducting blocks 1324 in each through hole 1322.Conducting block 1324 falls in the projection that drives layer 150 and drives trace 152 or shield traces 154.In the present embodiment, conducting block 1324 is roughly rectangle and all identical with shape and the size of conducting block 1342.Certainly in other embodiments, the shape of conducting block 1324 with greatly can be different less than conducting block 1342, conducting block 1324 can also be circle, parallelogram, trapezoidal or triangle.
In the present embodiment, the width L1 of induction trace 132 is not less than the width L2 that drives trace 152.In other embodiments, the width L1 of induction trace 132 also can be less than or equal to the width L2 that drives trace 152.
Conducting block 1324, conducting block 1342 and conducting block 1582 are made by conductive material, as transparent ITO (tin indium oxide), metal grid lines, carbon nano-tube etc.
Because driving the driving trace 152 of layer 150 is arranged alternately with shield traces 154, driving trace 152 is the noise electric field of induction trace 132 shielding LCD with shield traces 154 simultaneously, but because shield traces 154 and being free of attachment in the circuit, and, drive trace 152 and have relative width smaller, therefore can significantly reduce external electrical field, as the influence to whole touch screen 100 of the noise electric field of LCD, make this touch-screen 100 to external world electric field have preferable shield effectiveness.By offering through hole 1322 at induction trace 132, conducting block 1324 is set in the through hole 1322, the auxiliary trace 134 of inductive layer is set between the two adjacent induction traces 132 and at clearance for insulation 156 the auxiliary trace 158 of driving layer is set, can effectively prevent from producing on the touch-screen Moire fringe, and can make the overall light surface of touch-screen 100 evenly, avoid occurring the hot spot that obvious light and shade replaces.
In the above example, inductive layer 130 with drive the relative both sides that layer 150 lays respectively at insulation course 110, this insulation course 110 is made by insulating material, its effect is that mainly an inductive layer 130 is spaced apart with driving layer 150, this insulation course 110 can be used as inductive layer 130 and the carrier that drives layer 150, it is the DITO structure in the industry, but this insulation course 110 not necessarily is restricted to inductive layer 130 and the carrier that drives layer 150, inductive layer 130 with drive layer 150 can be by the live apart relative both sides of this insulation course 110 of other carriers, or one of them is positioned at a side of this insulation course 110 by other carriers at least, be example with the embodiment among Fig. 1, this inductive layer 130 also can be formed at the lower surface of this panel 170, and separate by insulation course 110 and driving layer 150, also can be to form on this insulation course 110.In addition, this insulation course 110 is not limited to one deck, can two-layer or multilayer.Below describe with specific embodiment equally.
Fig. 5 shows the touch-screen 300 of another embodiment of the utility model, the structure of the touch-screen 100 among itself and first embodiment is roughly the same, its difference is: the insulation course 31 of the touch sensible element 30 of touch-screen 300 comprises an insulating carrier layer 310 and an optical clear glue-line 320, and this driving layer 350 is formed on the basalis 380.This inductive layer 330 is formed at the first surface 312 of this insulating carrier layer 310.This optics glue-line 320 and this basalis 380 lay respectively at the relative both sides of this driving layer 350; this driving layer 350 is attached on the second surface 314 of this insulating carrier layer 310 by this optics glue-line 320; this basalis 380 not only drives the carrier of layer 350 as this, and drives the protective seam of layer 350 as this.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a touch sensible element is characterized in that, comprising:
Insulation course has first surface and reaches and described first surface opposing second surface;
Inductive layer is positioned at described first surface, and described inductive layer is arranged along first dimension of two-dimensional coordinate system by one group of space and nonoverlapping induction trace and formed; And
Drive layer, be positioned at described second surface, described driving layer covers trace and some conductive lead wires by one group of driving trace, group screen, described driving trace and shield traces are alternately arranged along second dimension of two-dimensional coordinate system and are formed, described driving trace and described induction trace are overlapping mutually, described driving trace and described shield traces space and not overlapping, each described conductive lead wire is electrically connected with a described driving trace.
2. touch sensible element according to claim 1 is characterized in that, described driving trace and shield traces be strip linearly all, and described driving trace equates with the shield traces width.
3. touch sensible element according to claim 1, it is characterized in that, described inductive layer comprises that also one group of inductive layer assists trace, the auxiliary trace of described inductive layer and described induction trace are alternately arranged along first dimension of described two-dimensional coordinate system, the auxiliary trace of described inductive layer and described induction trace space and not overlapping, the auxiliary trace of each bar inductive layer are arranged along second dimension of described two-dimensional coordinate system by a plurality of conducting blocks and are formed.
4. touch sensible element according to claim 1 is characterized in that, the overlapping zone of described induction trace and described driving trace and shield traces offers through hole, is provided with conducting block in the described through hole.
5. touch sensible element according to claim 4 is characterized in that, is provided with two conducting blocks in each through hole.
6. touch sensible element according to claim 4 is characterized in that, described conducting block is rectangle, circle, parallelogram, trapezoidal or triangle.
7. touch sensible element according to claim 1, it is characterized in that, the described layer that drives also comprises the auxiliary trace of the driving layer that is arranged between described driving trace and the described shield traces, the auxiliary trace of described driving layer arranged along first dimension of described two-dimensional coordinate system by a plurality of conducting blocks and formed the described driving auxiliary trace of layer and described driving trace mutually insulated.
8. touch sensible element according to claim 7 is characterized in that, the auxiliary trace of described driving layer falls into described induction trace in the orthogonal projection of described inductive layer.
9. a touch-screen is characterized in that, comprises each described touch sensible element as claim 1-8.
10. touch-screen according to claim 9 is characterized in that, described touch-screen also comprises the panel that is covered in described inductive layer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003079 CN203178952U (en) | 2013-01-05 | 2013-01-05 | Touch sensing element and touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003079 CN203178952U (en) | 2013-01-05 | 2013-01-05 | Touch sensing element and touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203178952U true CN203178952U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320003079 Expired - Fee Related CN203178952U (en) | 2013-01-05 | 2013-01-05 | Touch sensing element and touch screen |
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| CN (1) | CN203178952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103914191A (en) * | 2013-01-05 | 2014-07-09 | 深圳欧菲光科技股份有限公司 | Touch sensing element and touch screen |
-
2013
- 2013-01-05 CN CN 201320003079 patent/CN203178952U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103914191A (en) * | 2013-01-05 | 2014-07-09 | 深圳欧菲光科技股份有限公司 | Touch sensing element and touch screen |
| CN103914191B (en) * | 2013-01-05 | 2017-10-24 | 深圳欧菲光科技股份有限公司 | Touch sensible element and touch-screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20190105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |