CN102467270A - Touch control panel and touch control sensing pad - Google Patents
Touch control panel and touch control sensing pad Download PDFInfo
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- CN102467270A CN102467270A CN2010105324738A CN201010532473A CN102467270A CN 102467270 A CN102467270 A CN 102467270A CN 2010105324738 A CN2010105324738 A CN 2010105324738A CN 201010532473 A CN201010532473 A CN 201010532473A CN 102467270 A CN102467270 A CN 102467270A
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- touch
- control sensing
- sensing pad
- contact panel
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Abstract
The invention discloses a touch control sensing pad and a touch control panel adopting the touch control sensing pad. The touch control sensing pad comprises a center and a plurality of edges, wherein each edge in the edges is in a depressed shape towards the center. The touch control panel and the touch sensing pad have the advantages that the defect that the background capacitance value of the traditional large-size touch control panel is too high can be overcome, and the sensing sensitivity of the touch control panel can also be effectively improved.
Description
Technical field
The present invention relates to touch technology, particularly a kind ofly can effectively reduce the background capacitance value of contact panel and promote the touch-control sensing pad of its induction sensitivity and the contact panel that comprises this touch-control sensing pad.
Background technology
In recent years, along with the progress and development constantly of touch-control correlation technique, the main flow input mode of touch-control input becoming gradually man-machine interface.Because the appearance of consumption electronic products of new generation such as smart mobile phone; Promoted touch control screen and become more popular; Make that also the growth prospect for following contact panel market is very optimistic on the market, especially after Windows of new generation can be supported contact panel, the application of contact panel was from small-medium size fields such as mobile phone originally; Stride into the demand area quickly and can go up the pc domain of ten several times greatly, make that the potential business opportunity of contact panel is unlimited.
Generally speaking, contact panel is according to the difference of its principle of induction, and it is dissimilar to be broadly divided into resistance-type, condenser type, ultrasonic type, optics (for example infrared ray) formula etc.Wherein, Because capacitance type touch-control panel all is being superior to electric resistance touch-control panel aspect transmittance, reaction velocity, durability, the outward appearance; The advantage that also has the multi-point touch ability is so the generally good capacitance type touch-control panel in market can replace traditional resistor formula touch technology gradually.
Please with reference to Figure 1A, Figure 1A is the synoptic diagram of traditional a plurality of touch-control sensing pads that capacitance type touch-control panel comprised.Shown in Figure 1A; Capacitance type touch-control panel 1 comprises a plurality of touch-control sensing pads 10 of vertical and horizontal direction arrangement interlaced with each other; And each touch-control sensing pad 10 is square; The parasitic capacitor variations that is produced in order to according to object (for example finger or touch-control nib etc.) touch mode capacitive contact panel 1 time, and then sense the touch-control action of object and formed touch point position on capacitance type touch-control panel 1.
Gradually under the large scale Development Trend, the negative effect that the background capacitance value of contact panel is caused promptly can't out in the coldly again be disregarded at capacitance type touch-control panel, because the background capacitance value (C of contact panel
b) coincidence formula C
b=(ε
r* ε
0* A)/and d, that is the size of background capacitance value is directly proportional with the touch-control sensing area A, and is inversely proportional to the spacing d of adjacent two touch-control sensing pads.Therefore, in order to reach the purpose that reduces the background capacitance value, under the prerequisite that does not change the touch-control sensing area A, the general practice that adopts the spacing d that strengthens adjacent two touch-control sensing pads makes the background capacitance value of contact panel descend.
For example, please with reference to Figure 1B, Figure 1B has the synoptic diagram of bigger spacing for the adjacent two touch-control sensing spacers in the capacitance type touch-control panel.Shown in Figure 1B, a plurality of touch-control sensing pads 10 of capacitance type touch-control panel 1 ' comprise ', and said a plurality of touch-control sensing pad 10 ' shape be square, and with vertical and horizontal direction arrangement interlaced with each other.It should be noted that adjacent two touch-control sensing pads 10 among Figure 1B ' between spacing d ' significantly greater than the spacing d between the adjacent two touch-control sensing pads 10 among Figure 1A, so as to reduce capacitance type touch-control panel 1 ' the background capacitance value.
Yet the mode of the spacing d of the adjacent two touch-control sensing pads of above-mentioned increase capacitance type touch-control panel is though can reduce the background capacitance value C of contact panel effectively
b, but cause the excesssive gap between the touch-control sensing pad also, cause the induction sensitivity variation of contact panel on the contrary, thereby make contact panel have the touch point erroneous judgement or even situation that can't the interpretation touch point takes place for the touch-control action.
Summary of the invention
To the problem that exists in the prior art, the object of the present invention is to provide a kind of contact panel and touch-control sensing pad, can effectively reduce the background capacitance value of contact panel and promote its induction sensitivity.
According to a specific embodiment, the touch-control sensing pad that the present invention proposes is applied to a contact panel, and this touch-control sensing pad comprises a center and a plurality of edge, and each edge in said a plurality of edge presents recess towards this center respectively.
In practical application, the profile of this touch-control sensing pad can be star, dartlike weapon shape or the polygon that caves inward; Said a plurality of edge can be to present recess with arc or continuous line segment.In addition, said a plurality of edge is relevant with a specific function towards the degree of this central concave; The one background capacitance value and an induction sensitivity of this contact panel are relevant towards the degree of this central concave with said a plurality of edges.
According to another specific embodiment, the contact panel that the present invention proposes comprises a plurality of touch-control sensing pads.Touch-control sensing pad in said a plurality of touch-control sensing pad comprises a center and a plurality of edge.Each edge in said a plurality of edge presents recess towards this center respectively.
In practical application, the profile of this touch-control sensing pad can be star, dartlike weapon shape or the polygon that caves inward; Said a plurality of edge can be to present recess with arc or continuous line segment.In addition, said a plurality of edge is relevant with a specific function towards the degree of this central concave; The one background capacitance value and an induction sensitivity of this contact panel are relevant towards the degree of this central concave with said a plurality of edges.
Beneficial effect of the present invention is; Than prior art; Contact panel of the present invention and touch-control sensing pad are the modes through the shape that changes traditional touch-control sensing pad, cause the profile of this touch-control sensing pad to present the polygon to central concave, whereby; The background capacitance value of this contact panel not only can reduce effectively; When object touched this contact panel, the sensitivity of the touch action of this contact panel sense object also can obtain to promote, so can significantly promote the market competitiveness of contact panel.
Can further be understood through following detailed Description Of The Invention and appended accompanying drawing about advantage of the present invention and spirit.
Description of drawings
Figure 1A is the synoptic diagram of traditional a plurality of touch-control sensing pads that capacitance type touch-control panel comprised.
Figure 1B has the synoptic diagram of bigger spacing for the adjacent two touch-control sensing spacers in the capacitance type touch-control panel.
Fig. 2 is for comprising the synoptic diagram of a plurality of touch-control sensing pads according to the contact panel of a specific embodiment of the present invention.
Fig. 3 A is the zoomed-in view of the touch-control sensing pad among Fig. 2.
Fig. 3 B show the touch-control sensing pad shown in Fig. 3 A in contact panel with the corresponding relation of touch-control sensing pad around it.
Fig. 4 A is that the edge of touch-control sensing pad is towards the less synoptic diagram of the degree of its central concave.
Fig. 4 B show the touch-control sensing pad shown in Fig. 4 A in contact panel with the corresponding relation of touch-control sensing pad around it.
The synoptic diagram of the curved edge that Fig. 5 A caves inward for the touch-control sensing pad.
Fig. 5 B show shown in Fig. 5 A the touch-control sensing pad in contact panel with the corresponding relation of touch-control sensing pad around it.
Wherein, description of reference numerals is following:
1,1 ': capacitance type touch-control panel
10,10 ', 20,20 ', 20 ": the touch-control sensing pad
2,2 ', 2 ": contact panel 200,201,201 ', 201 ": the edge
C, c ', c ": center α, β: angle
201a, 201b, 201a ', 201b ': line segment
D, d ', d
1, d
2, d
3: the spacing of adjacent two touch-control sensing pads
Embodiment
The present invention proposes a kind of contact panel and touch-control sensing pad; Through the shape of a plurality of touch-control sensing pads that this contact panel comprised is changed into the polygonal mode to central concave by traditional square; Make the background capacitance value of this contact panel descend, and the sensitivity of its induction touch-control action also can obtain significant lifting.
A specific embodiment according to the present invention is a kind of contact panel.In this embodiment, this contact panel is a capacitance type touch-control panel, and this contact panel comprises a plurality of touch-control sensing pads.Please with reference to Fig. 2, Fig. 2 comprises the synoptic diagram of said a plurality of touch-control sensing pads for this contact panel.
As shown in Figure 2, contact panel 2 comprises a plurality of touch-control sensing pads 20, and said a plurality of touch-control sensing pad 20 is with vertical and horizontal direction arrangement interlaced with each other.In practical application, the number of the touch-control sensing pad 20 that contact panel 2 is comprised does not have certain restriction, designs so can look the size and the actual demand of using of contact panel 2.The material of being selected for use as for the touch-control sensing pad 20 of contact panel 2 is identical with general touch-control sensing pad, does not have special character.
In addition, said a plurality of touch-control sensing pads 20 can be arranged at the circuit board of contact panel 2, and said a plurality of touch-control sensing pad 20 can adopt dual-layer, single-sided to pile up method or individual layer dual-surface stacking method is arranged on the circuit board.That is to say that said a plurality of touch-control sensing pads 20 can be arranged at two-tier circuit plate one side up up and down according to the actual requirements respectively, or be arranged at the upper and lower surface of same layer circuit board respectively, do not have certain restriction.
Each edge 200 of it should be noted that the arbitrary touch-control sensing pad 20 in said a plurality of touch-control sensing pad 20 all can present recess towards the center of this touch-control sensing pad 20 c.That is to say that all edges of touch-control sensing pad 20 all can be to center c depression, so as to making the profile of touch-control sensing pad 20 present a kind of polygon that caves inward, dartlike weapon shape or star for example shown in Figure 2, but not as limit.
In addition; Dashed rectangle representative among Fig. 2 promptly be the traditional square touch-control sensing pad 10 shown in Figure 1B '; Clearly; Adjacent two touch-control sensing pads 10 among the spacing d1 of the adjacent two touch-control sensing pads 20 in the contact panel 2 and Figure 1B ' spacing d ' equate, the area of the touch-control sensing pad 20 of contact panel 2 then can than contact panel 1 ' touch-control sensing pad 10 ' area be greater.
Then, please with reference to Fig. 3 A, Fig. 3 A is the zoomed-in view of the touch-control sensing pad 20 among Fig. 2.Shown in Fig. 3 A, the edge 201 of touch-control sensing pad 20 is formed by connecting line segment 201a and line segment 201b, and has an angle between line segment 201a and the line segment 201b.Because c presents recess towards the center of touch-control sensing pad 20 at the edge 201 of touch-control sensing pad 20, therefore, the angle between line segment 201a and the line segment 201b is less than 180 degree.In like manner, also c presents recess towards the center of touch-control sensing pad 20 at other edges of touch-control sensing pad 20, shown in Fig. 3 A.
Please with reference to Fig. 3 B, Fig. 3 B shows the corresponding relation with touch-control sensing pad around it in contact panel 2 of the touch-control sensing pad 20 shown in Fig. 3 A.Shown in Fig. 3 B, because the touch-control sensing pad around the touch-control sensing pad 20 is all identical with touch-control sensing pad 20, therefore, four of touch-control sensing pad 20 are d to the edge of central concave and the spacing of adjacent touch-control sensing pad
1
Background capacitance value and induction sensitivity that it should be noted that contact panel of the present invention are relevant towards the degree of the central concave of touch-control sensing pad with each edge of its touch-control sensing pad.
In practical application; Each edge of the touch-control sensing pad of contact panel of the present invention is relevant with a specific function towards the degree of the central concave of touch-control sensing pad; Shown in Fig. 2-Fig. 5 B, what the variation of this sinking degree brought is the variation of spacing d, because by formula C
b=(ε
r* ε
0* A)/d can know d=(ε
r* ε
0* A)/C
b, the background capacitance value C that therefore, this sinking degree can be the touch-control sensing area A, go for
bAnd employed dielectric relative dielectric constant ε
rThe function of these three variablees or its combination, and this function can and set according to the actual design demand of this contact panel, do not have certain restriction.
That is to say; Each edge of touch-control sensing pad that the contact panel designer can adjust contact panel through the content that designs this specific function is towards the degree of the central concave of touch-control sensing pad, so as to the background capacitance value of controlling this contact panel and the size of induction sensitivity.
For example, please with reference to Fig. 4 A, Fig. 4 A is that the edge of touch-control sensing pad is towards the less synoptic diagram of the degree of its central concave.Shown in Fig. 4 A; Touch-control sensing pad 20 ' edge 201 ' be formed by connecting line segment 201a ' and line segment 201b '; And have an angle β between line segment 201a ' and the line segment 201b ', as among Fig. 4 A dotted line indicated is the shape of the touch-control sensing pad 20 among Fig. 3 A.
In this embodiment; Because touch-control sensing pad 20 ' edge 201 ' towards touch-control sensing pad 20 ' center c ' present recess; Therefore, the angle β between line segment 201a ' and the 201b ' also spends less than 180, yet; It should be noted that line segment 201a ' and the angle β between the line segment 201b ' among Fig. 4 A is significantly greater than line segment 201a among Fig. 3 A and the angle between the line segment 201b.
That is to say; Can know greater than the comparative result of the angle among Fig. 3 A by the angle β among Fig. 4 A, the touch-control sensing pad 20 among Fig. 4 A ' the degree of the c ' depression of edge 201 ' towards the center come slightly than the degree of edge 201 c depression of the touch-control sensing pad 20 among Fig. 3 A significantly towards the center.In like manner, touch-control sensing pad 20 ' other edges also towards touch-control sensing pad 20 ' center c ' present recess, do not give unnecessary details separately in this.
Then, please with reference to Fig. 4 B, Fig. 4 B illustrate contact panel 2 ' in touch-control sensing pad 20 ' with the corresponding relation of touch-control sensing pad around it.Shown in Fig. 4 B because touch-control sensing pad 20 ' on every side touch-control sensing pad all with touch-control sensing pad 20 ' identical, therefore, touch-control sensing pad 20 ' four be d to the edge of central concave and the spacing of adjacent touch-control sensing pad
2As among Fig. 4 B dotted line indicated then is the shape of the touch-control sensing pad 20 among Fig. 3 B.
Clearly, solid line among the comparison diagram 4B and dotted line can obtain: the adjacent two touch-control sensing pads 20 among Fig. 4 B ' spacing d
2Spacing d less than the adjacent two touch-control sensing pads 20 among Fig. 3 B
1That is to say; Because the touch-control sensing pad 20 among Fig. 4 B ' edge 201 ' degree of c ' depression is come slightly than edge 201 degree that c caves in towards the center of the touch-control sensing pad 20 among Fig. 3 B towards the center, thereby make adjacent two touch-control sensing pads 20 among Fig. 4 B ' spacing d
2Spacing d less than the adjacent two touch-control sensing pads 20 among Fig. 3 B
1
The experimental data that next, will measure with actual amount with regard to the contact panel 2 among the contact panel among Fig. 3 B 2 and Fig. 4 B ' background capacitance value and induction sensitivity analyze comparison.Suppose contact panel 2 and contact panel 2 ' with formula C=(ε
r* ε
0* A)/and condition that d is relevant, as shown in table 1 below.
Table 1
| ε r(12.5ohm) | d | A | The A | |
| Contact panel | ||||
| 2 | 0.038 | 1.2 | 21.11 | 89％ |
| Contact panel 2 ' | 0.033 | 0.7 | 23.72 | 100％ |
As for contact panel 2 and contact panel 2 ' background capacitance value and the experimental data of induction sensitivity, then shown in table 2A and table 2B, wherein show 2A and table 2B represents respectively in the measurement of the first test point P0 and the 21 test point P20.
Table 2A
Table 2B
Measurement according to above-mentioned table 2A and table 2B can be known; No matter be that measurement in the first test point P0 or the 21st test point P20 all shows: since the edge 201 of the touch-control sensing pad 20 of the contact panel 2 among Fig. 3 B towards the degree of center c depression than the contact panel among Fig. 4 B 2 ' be greater; Make that the spacing of the adjacent two touch-control sensing pads 20 in the contact panel 2 is also bigger; Thereby the background capacitance value that causes the contact panel 2 among Fig. 3 B reduces approximately 4～10%, and the sensitivity of the touch action of 2 sense objects of the contact panel among Fig. 3 B also can promote about 10～25%.
In practical application, said a plurality of edges of touch-control sensing pad proposed by the invention also not only are confined to appear to the central concave shape with continuous line segment in the previous embodiment.Please with reference to Fig. 5 A, the synoptic diagram of the curved edge that Fig. 5 A caves inward for the touch-control sensing pad.Shown in Fig. 5 A, touch-control sensing pad 20 " edge 201 " with an arc to touch-control sensing pad 20 " center c " depression, as for edge 201 " the degree of crook of arc can adjust according to actual needs, do not have certain restriction.
Then show the touch-control sensing pad 20 among Fig. 5 A as for Fig. 5 B " in contact panel with the corresponding relation of touch-control sensing pad around it.Shown in Fig. 5 B, " touch-control sensing pad on every side all with touch-control sensing pad 20 " is identical because touch-control sensing pad 20, therefore, touch-control sensing pad 20 " four be d to the edge of central concave and the spacing of adjacent touch-control sensing pad
3
According to another specific embodiment, the touch-control sensing pad that the present invention proposes is to be applied to a contact panel, and this touch-control sensing pad comprises a center and a plurality of edge, and each edge in said a plurality of edge presents recess towards this center respectively.
In practical application, the profile of this touch-control sensing pad can be star, dartlike weapon shape or the polygon that caves inward; Said a plurality of edge can be arc or the continuous line segment that presents recess.In addition, said a plurality of edge is relevant with a specific function towards the degree of this central concave; The one background capacitance value and an induction sensitivity of this contact panel are relevant towards the degree of this central concave with said a plurality of edges.
Above-mentioned specific embodiment has been presented in detailed description as for this touch-control sensing pad that is applied to this contact panel, so do not give unnecessary details separately in this.
Than prior art; Contact panel of the present invention and touch-control sensing pad are through the mode of the shape of the traditional touch-control sensing pad of change; Cause the profile of this touch-control sensing pad to present the polygon to central concave, whereby, the background capacitance value of this contact panel not only can reduce effectively; When object touched this contact panel, the sensitivity of the touch action of this contact panel sense object also can obtain to promote.In sum; Not only can improve the shortcoming that traditional large touch panel has too high background capacitance value according to contact panel of the present invention and touch-control sensing pad; Also can promote the induction sensitivity of contact panel effectively, so can significantly promote the market competitiveness of contact panel.
Through the detailed description of above preferred embodiment, hope can be known description characteristic of the present invention and spirit more, and is not to come category of the present invention is limited with the above-mentioned preferred embodiment that is disclosed.On the contrary, its objective is that hope can contain in the protection domain of being arranged in of various changes and tool identity property institute of the present invention desire application.
Claims (12)
1. a touch-control sensing pad is applied to a contact panel, and this touch-control sensing pad comprises:
One center; And
A plurality of edges, each edge in said a plurality of edges presents recess towards this center respectively.
2. touch-control sensing pad as claimed in claim 1 is characterized in that, said a plurality of edges are relevant with a specific function towards the degree of this central concave.
3. touch-control sensing pad as claimed in claim 1 is characterized in that, this contact panel can obtain littler background capacitance value through strengthening sinking degree.
4. touch-control sensing pad as claimed in claim 1 is characterized in that, this contact panel can obtain better induction sensitivity through strengthening sinking degree.
5. touch-control sensing pad as claimed in claim 1 is characterized in that, the profile of this touch-control sensing pad is star, dartlike weapon shape or the polygon that caves inward.
6. touch-control sensing pad as claimed in claim 1 is characterized in that, said a plurality of edges are to present recess with arc or continuous line segment.
7. contact panel comprises:
A plurality of touch-control sensing pads, the touch-control sensing pad in said a plurality of touch-control sensing pads comprises:
One center; And
A plurality of edges, each edge in said a plurality of edges presents recess towards this center respectively.
8. contact panel as claimed in claim 7 is characterized in that, said a plurality of edges are relevant with a specific function towards the degree of this central concave.
9. contact panel as claimed in claim 7 is characterized in that, this contact panel can obtain littler background capacitance value through strengthening sinking degree.
10. contact panel as claimed in claim 7 is characterized in that, this contact panel can obtain better induction sensitivity through strengthening sinking degree.
11. contact panel as claimed in claim 7 is characterized in that, the profile of said a plurality of touch-control sensing pads is star, dartlike weapon shape or the polygon that caves inward.
12. contact panel as claimed in claim 7 is characterized in that, said a plurality of edges are to present recess with arc or continuous line segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105324738A CN102467270A (en) | 2010-11-02 | 2010-11-02 | Touch control panel and touch control sensing pad |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105324738A CN102467270A (en) | 2010-11-02 | 2010-11-02 | Touch control panel and touch control sensing pad |
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| Publication Number | Publication Date |
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| CN102467270A true CN102467270A (en) | 2012-05-23 |
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|---|---|---|---|
| CN2010105324738A Pending CN102467270A (en) | 2010-11-02 | 2010-11-02 | Touch control panel and touch control sensing pad |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470562A (en) * | 2007-12-28 | 2009-07-01 | 株式会社和冠 | Position detecting device |
| WO2010039843A1 (en) * | 2008-10-01 | 2010-04-08 | Integrated Device Technology, Inc | Alternating, complementary conductive element pattern for multi-touch sensor |
| US20100110040A1 (en) * | 2008-10-30 | 2010-05-06 | Samsung Electronics Co., Ltd. | Touch controller having increased sensing sensitivity, and display driving circuit and display device and system having the touch controller |
| CN101751192A (en) * | 2009-12-15 | 2010-06-23 | 深超光电（深圳）有限公司 | Touch-control panel |
-
2010
- 2010-11-02 CN CN2010105324738A patent/CN102467270A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470562A (en) * | 2007-12-28 | 2009-07-01 | 株式会社和冠 | Position detecting device |
| WO2010039843A1 (en) * | 2008-10-01 | 2010-04-08 | Integrated Device Technology, Inc | Alternating, complementary conductive element pattern for multi-touch sensor |
| US20100110040A1 (en) * | 2008-10-30 | 2010-05-06 | Samsung Electronics Co., Ltd. | Touch controller having increased sensing sensitivity, and display driving circuit and display device and system having the touch controller |
| CN101751192A (en) * | 2009-12-15 | 2010-06-23 | 深超光电（深圳）有限公司 | Touch-control panel |
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Application publication date: 20120523 |