CN201369034Y - Touch panel - Google Patents

Abstract

The utility model provides a touch panel which comprises a first base plate, a second base plate, a first electric conduction layer, a second electric conduction layer and a plurality of oval electrode patterns. The second base plate is arranged above the first base plate in parallel, the first electric conduction layer is arranged on the first base plate and faces the second base plate, the second electric conduction layer is arranged on the second base plate and faces the first base plate, the second electric conduction layer is provided with a plurality of rims and a plurality of corners which are sandwiched among the rims, the oval electrode patterns are arranged along the rims of the second electric conduction layer and are electrically connected with the second electric conduction layer, and the oval electrode patterns present non-uniform distribution density on each rim. The touch panel has the advantages that a uniform electric field can be formed in the second electric conduction layer, so as to be beneficial for improving the sensing accuracy of the touch panel. Moreover, the oval electrode patterns can be manufactured by the printing of a screen printing plate, so as to be beneficial for simplifying the manufacturing steps of the touch panel.

Description

Contact panel

[technical field]

The utility model is about a kind of contact panel, and particularly disposes the contact panel of electrode pattern about a kind of conductive layer edge.

[background technology]

In recent years, various electronic product all constantly strides forward towards the direction of easy and simple to handle, small size and screen sizes, and particularly portable electronic product is more strict for the requirement of volume and screen size.Therefore, many electronic products are all integrated contact panel and display panels, with omission keyboard or the required space of operational and controlled key button, and then make the configurable enlarged areas of screen.

At present, contact panel roughly can be divided into contact panels such as resistance-type, condenser type, infrared-type and ultrasonic formula, is modal product with electric resistance touch-control panel and capacitance type touch-control panel wherein.With regard to capacitance type touch-control panel, but the characteristic of multi-point touch provides more humane operator scheme, makes capacitance type touch-control panel be subjected to the favor in market gradually.But, capacitance type touch-control panel must be touched contact panel operating with conductive material, thereby the user can't be with gloves or operates with the nonconductor material.

With electric resistance touch-control panel, no matter the user touches contact panel with which kind of medium can be operated, thereby has improved the ease of use of contact panel.In addition, the required cost of electric resistance touch-control panel is lower and the electric resistance touch-control panel technical development is comparatively ripe, thereby market share is higher.

In general, electric resistance touch-control panel has two kinds of circuit design and corresponding account form, and it is analog and digital.Analog electric resistance touch-control panel has high location analytic ability, applicable to the operator scheme of handwriting input.Desire to finish the location Calculation of high analytic ability, in the structure of electric resistance touch-control panel, form uniform electric field.So the structure of electric resistance touch-control panel often needs to make special design at the pattern of electrode.

[summary of the invention]

Technical problem to be solved in the utility model is to provide a kind of contact panel that can form equally distributed electric field in contact panel.

The utility model solves the problems of the technologies described above by the following technical programs: a kind of contact panel comprises:

One first substrate;

One second substrate, configured in parallel is above described first substrate;

One first conductive layer is configured on described first substrate, and towards described second substrate;

One second conductive layer is configured on described second substrate, and towards described first substrate, and described second conductive layer has a plurality of edges and is sandwiched in a plurality of corners between the edge;

Also comprise a plurality of elliptical electrodes patterns, along the edge configuration of described second conductive layer, and be electrically connected described second conductive layer, on each edge, these elliptical electrodes patterns present uneven distribution density.

This utility model can further be specially:

On each edge, described elliptical electrodes pattern has two kinds of ellipticities at least.

On each edge, described elliptical electrodes pattern has at least two kinds of sizes.

On each edge, described elliptical electrodes pattern is arranged in the mode of non-equidistance.

The material of described elliptical electrodes pattern is a metal.

The parallel edge of the major axis of described elliptical electrodes pattern corresponding to described second conductive layer.

Wherein away from the major axis of the elliptical electrodes pattern in corner major axis greater than the elliptical electrodes pattern in contiguous corner.

The elliptical electrodes pattern that wherein is positioned on the relative two edges is symmetrical distribution.

Also comprise many signal line, be electrically connected on the corner of described the second electrode lay.

Also comprise a plurality of septs, be configured between described first conductive layer and second conductive layer.

Also comprise a sense wire, be electrically connected on described first conductive layer.

The material of wherein said first conductive layer and second conductive layer is respectively the monoxide conductive material.

Wherein said first substrate or described second substrate are a flexible base plate.

The advantage of the utility model contact panel is: adopt a plurality of elliptical electrodes pattern arrangement in the structure at the second conductive layer edge, therefore contact panel of the present utility model can form uniform electric field in second conductive layer, in addition, second conductive layer has an equally distributed electric field, thereby helps to promote the sensing accuracy of contact panel.In addition, the elliptical electrodes design of patterns can utilize screen painting to be made, thereby helps to simplify the making step of contact panel.

[description of drawings]

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the sectional view of the contact panel of the utility model one embodiment.

Fig. 2 is the synoptic diagram of first substrate of the contact panel of the utility model one embodiment.

Fig. 3 is the synoptic diagram of second substrate of the contact panel of the utility model one embodiment.

[primary clustering symbol description]

100: contact panel

110: the first substrates

120: the second substrates

130: the first conductive layers

140: the second conductive layers

150: the elliptical electrodes pattern

160: sept

170,170A～170D: signal wire

180: sense wire

D1, d2: direction

[embodiment]

Figure 1 shows that the sectional view of the contact panel of one of the utility model embodiment, and Fig. 2 and Figure 3 shows that first substrate of contact panel of one of the utility model embodiment and the synoptic diagram of second substrate.Please be simultaneously referring to figs. 1 through shown in Figure 3,contact panel 100 comprises onefirst substrate 110, onesecond substrate 120, one firstconductive layer 130, one secondconductive layer 140 and a plurality of elliptical electrodes pattern 150.Second substrate, 120 configured in parallel are in the top of first substrate 110.Firstconductive layer 130 is disposed onfirst substrate 110, and towards second substrate 120.Secondconductive layer 140 is disposed onsecond substrate 120, and towards first substrate 110.Elliptical electrodes pattern 150 disposes along second conductive layer, 140 edges, and is electrically connected second conductive layer 140.In addition,contact panel 100 also comprises a plurality ofsepts 160, and thesesepts 160 are disposed between firstconductive layer 130 and secondconductive layer 140, to avoid firstconductive layer 130 and secondconductive layer 140 mutual conduction when unnecessary.That is to say that disposing ofsept 160 helps reduce the probability thatcontact panel 100 false senses are surveyed.

Thecontact panel 100 of present embodiment can be thecontact panel 100 of resistance-type, andfirst substrate 110 can be a flexible base plate.The user can directly pushfirst substrate 110 so that 100 deflections of first substrate when usingcontact panel 100 to carry out touch-control control.At this moment, firstconductive layer 130 onfirst substrate 100 just can with second conductive layer, 140 conductings onsecond substrate 120, thereby produce corresponding sense signals to carry out the calculating of touch-control control address.Certainly, also can makesecond substrate 120 be flexible base plate, the user then can directly press onsecond substrate 120 when carrying out touch-control control.

Usually, the corner of secondconductive layer 140 is connected withmany signal line 170, the firstconductive layers 130 and then is electrically connected to a sense wire 180.Thesesignal wires 170 in order to each corner of importing signal to the secondconductive layer 140 in secondconductive layer 140, to form suitable electric field.When user's push action made firstconductive layer 130 and 140 conductings of second conductive layer, first conductive layer, 130 received electric signal just can be sent to control circuit to carry out the calculating of touch-control address bysense wire 180.

For instance,signal wire 170A imports the corner of one first voltage to the second correspondingconductive layer 140 withsignal wire 170B, andsignal wire 170C and signal wire 170D import one second voltage two other corner in secondconductive layer 140, and wherein first voltage is different with second voltage.Because secondconductive layer 140 has specific impedance, so the input meeting of first voltage and second voltage forms the electric field of a first direction d1 in second conductive layer 140.Under such electric field action, firstconductive layer 130 just can be sent to correspondingsignal sense wire 180 during with 140 conductings of second conductive layer.At this moment, control circuit can calculate the coordinate of touch-control address on first direction d1 bysense wire 180 received signals.

Certainly,signal wire 170B also can change input second voltage in the corner of correspondence, and signal wire 170D then changes input first voltage in the corner of correspondence.At this moment, just be formed with the electric field of second direction d2 in second conductive layer 140.When the user carried out the touch-control action, control circuit just can go out the coordinate of touch-control address on second direction d2 bysense wire 180 received calculated signals.Finish after above-mentioned two steps, the address of user's touching just can accurately be calculated and be finished touch-control and move.

In the practical operation, the calculating that finish above-mentioned touch-control address must make the online voltage with identical size in two corners that are transfused to identical voltage, just forms grade pressure-wire, the just linear electric fields of a linear distribution.Yet, the material of firstconductive layer 130 and secondconductive layer 140 is respectively the monoxide conductive material, the resistance of oxide conducting material is higher than the common metal material, so might be formed with an electric field because of first voltage and second voltage application in second conductive layer 140.But, after 170 of signal wires input to signal voltage in the corner of correspondence, not necessarily can be at the online voltage of keeping identical size in adjacent corner, thereby make the Electric Field Distribution of secondconductive layer 140 meet desirable state not to the utmost, that is to say that the Electric Field Distribution in secondconductive layer 140 is not to present linearity.

Therefore, present embodiment is configured in second conductive layer, 140 edges in this proposition withelliptical electrodes pattern 150, and wherein the material ofelliptical electrodes pattern 150 can be a metal.The impedance of metal material is low than the impedance of oxide conducting material usually.Simultaneously, in the present embodiment,elliptical electrodes pattern 150 presents uneven distribution density on each edge, so the edge thatelliptical electrodes pattern 150 is configured in secondconductive layer 140 helps to form distribution scenario and meets desirable electric field in second conductive layer 140.Just,elliptical electrodes pattern 150 helps to form the electric field of linear distribution in secondconductive layer 140.

In particular, in the present embodiment, theelliptical electrodes pattern 150 on each edge can have two kinds of ellipticities at least.That is to say, can be the ellipticity that is different from theelliptical electrodes pattern 150 in contiguous secondconductive layer 140 corners away from the ellipticity of theelliptical electrodes pattern 150 in second conductive layer, 140 corners.In addition, can keep a suitable distance between two adjacent elliptical electrodes patterns 150.Thus, when the corner of secondconductive layer 140 was applied in corresponding signal voltage, the uniform voltage of online formation that the good conductive thatelliptical electrodes pattern 150 is provided helps to fall in two adjacent angular distributed, and just formed the pressure-wire that waits of linear distribution.Certainly, on each edge,elliptical electrodes pattern 150 can also have at least two kinds of sizes or arrange in the mode of non-equidistance.

Because secondconductive layer 140 has specific impedance, the corner then signal far away more of distance secondconductive layer 140 is difficult for keeping in secondconductive layer 140 more.Therefore, in the present embodiment, away from the major axis of theelliptical electrodes pattern 150 in the corner of secondconductive layer 140 major axis greater than theelliptical electrodes pattern 150 in the corner of contiguous second conductive layer 140.On same edge, theelliptical electrodes pattern 150 of different major axis can change the Electric Field Distribution situation in second conductive layer 140.Specifically, can to make originally with each corner be the electric field that electric field that the center outwards distributes is transformed into linear distribution to theelliptical electrodes pattern 150 of present embodiment.That is to say that present embodiment utilizes the unevenelliptical electrodes pattern 150 of distribution density to make the Electric Field Distribution situation in secondconductive layer 140 obtain to adjust to meet the ideal distribution state.

In addition, the edge of the parallel in fact correspondence of the major axis ofelliptical electrodes pattern 150 and second conductive layer 140.In addition, theelliptical electrodes pattern 150 that is positioned on the relative two edges can be symmetrical distribution.In Fig. 2, theelliptical electrodes pattern 150 that first direction d1 goes up relative both sides can be symmetrically distributed, and the identicalelliptical electrodes pattern 150 of relative both sides on second direction d2 also is to be symmetrically distributed.What deserves to be mentioned is, theelliptical electrodes pattern 150 of present embodiment can utilize traditional screen painting mode to make, and need not make with the higher patterning process of precision, so the design ofelliptical electrodes pattern 150 helps to simplify the fabrication steps ofcontact panel 100.

In sum, the utility model utilizes the elliptical electrodes pattern arrangement of different ellipticities and distribution density in the second conductive layer edge, helps to form in second conductive layer comparatively desirable electric field of distribution.Like this, contact panel of the present utility model can carry out touch-control address computation accurately.In addition, the elliptical electrodes pattern can utilize traditional screen painting processing procedure to make and help to simplify the making step of contact panel of the present utility model.

Though the utility model discloses as above with preferred embodiment; but it is not in order to limit the utility model; any those of ordinary skill in the art; in not breaking away from spirit and scope of the present utility model; therefore can make the modification and the variation of equivalence, protection domain of the present utility model is with being as the criterion that the protection domain of claim defines.

Claims (13)

1. contact panel comprises:

One first substrate;

One second substrate, configured in parallel is above described first substrate;

One first conductive layer is configured on described first substrate, and towards described second substrate;

One second conductive layer is configured on described second substrate, and towards described first substrate, and described second conductive layer has a plurality of edges and is sandwiched in a plurality of corners between the edge; It is characterized in that: also comprise a plurality of elliptical electrodes patterns, along the edge configuration of described second conductive layer, and be electrically connected described second conductive layer, on each edge, these elliptical electrodes patterns present uneven distribution density.

2. contact panel as claimed in claim 1 is characterized in that: on each edge, described elliptical electrodes pattern has two kinds of ellipticities at least.

3. contact panel as claimed in claim 1 is characterized in that: on each edge, described elliptical electrodes pattern has at least two kinds of sizes.

4. contact panel as claimed in claim 1 is characterized in that: on each edge, described elliptical electrodes pattern is arranged in the mode of non-equidistance.

5. contact panel as claimed in claim 1 is characterized in that: the material of described elliptical electrodes pattern is a metal.

6. contact panel as claimed in claim 1 is characterized in that: the parallel edge corresponding to described second conductive layer of the major axis of described elliptical electrodes pattern.

7. contact panel as claimed in claim 1 is characterized in that: wherein away from the major axis of the elliptical electrodes pattern in the corner major axis greater than the elliptical electrodes pattern in contiguous corner.

8. contact panel as claimed in claim 1 is characterized in that: the elliptical electrodes pattern that wherein is positioned on the relative two edges is symmetrical distribution.

9. contact panel as claimed in claim 1 is characterized in that: also comprise many signal line, be electrically connected on the corner of described the second electrode lay.

10. contact panel as claimed in claim 1 is characterized in that: also comprise a plurality of septs, be configured between described first conductive layer and second conductive layer.

11. contact panel as claimed in claim 1 is characterized in that: also comprise a sense wire, be electrically connected on described first conductive layer.

12. contact panel as claimed in claim 1 is characterized in that: the material of wherein said first conductive layer and second conductive layer is respectively the monoxide conductive material.

13. contact panel as claimed in claim 1 is characterized in that: wherein said first substrate or described second substrate are a flexible base plate.

Images