CN102760019A - Electrode array of touch panel - Google Patents

Abstract

The invention discloses an electrode array of a touch panel. The electrode array of the touch panel comprises a plurality of rhombus electrodes, a plurality of dumb-bell-type electrodes and a plurality of bridging lines; the plurality of rhombus electrodes are ranked along a first direction, and are connected with one another at the first direction; the plurality of dumb-bell-type electrodes are ranked along a second direction, and each dumb-bell-type electrode is provided with a first expanding part, a second expanding part and a narrow part, wherein each rhombus electrode is arranged between two adjacent dumb-bell-type electrodes along the second direction; and the plurality of bridging lines are respectively used for being electrically connected with the two first expanding parts and the two second expanding parts of the two adjacent dumb-bell-type electrodes. According to the invention, through the dumb-bell-type electrodes, the product reliability is improved.

Description

The electrod-array of contact panel

Technical field

The invention relates to a kind of touch surface version, be meant a kind of electrod-array of contact panel especially.

 

Background technology

The consumption electronic products application of carrying capacitance type touch-control panel has in recent years become market mainstream design, and the sensed characteristic that promotes contact panel also is present stage one of an important development goal.(Electrostatic discharge ESD) is the problem that present contact panel is desired most ardently improvement to static discharge.When the user carried out the operation of capacitive touch control products, because the generation of Electrostatic Discharge causes the contact panel function to be damaged, this problem had become present each tame manufacturer and has paid close attention to and the focus that promotes.

Regular meeting produces static charge because of friction or other reason in the processing procedure of capacitance type touch-control panel or use; Too much static charge causes the effect of static discharge easily and discharges electric energy; Will produce contact panel in the process and puncture and the situation of burning; Wherein the most often betide the easy position of accumulating of electric charge such as thin, sharp, positions such as bending place.

Please with reference to Fig. 1, Fig. 1 is the electrod-array of known contact panel.Known electrod-array 100 comprisesrhombus electrode 120 that along continuous straight runs is arranged and the rhombus electrode of vertically arranging 140, and wherein vertical directionarrangement rhombus electrode 140 is bybridging line 150 serial connections.When capacitance type touch-control panel since external or itself electrically during operation, too much electric charge is accumulated in the twoends 151 and 152 ofbridging line 150 easily, and causesbridging line 150 to blow at 151 and 152 places at two ends.Being positioned at the permutation rhombus electrode that blows the place does not promptly have effect, has therefore reduced the accuracy of product reliability and sensing.

 

Summary of the invention

In view of this, the object of the present invention is to provide a kind of electrod-array of novel contact panel, its design with the dumb-bell shape electrode solves above-mentioned bridging line and is prone to the broken string problem.

For reaching above-mentioned purpose, the electrod-array of contact panel provided by the invention comprises a plurality of rhombus electrodes, a plurality of dumb-bell shape electrode and a plurality of bridging lines.Those rhombus electrodes are to arrange along a first direction, and those rhombus electrodes interconnect on this first direction.Those dumb-bell shape electrodes are arranged along a second direction; Each dumb-bell shape electrode has one first expansion section, one second expansion section, reaches a narrow that connects this first expansion section and this second expansion section, and wherein each rhombus electrode is arranged on along between the two adjacent dumb-bell shape electrodes on this second direction.Those bridging lines are respectively applied for along these two first expansion sections of this this two adjacent dumb-bell shape electrode of second direction electric connection and electrically connect these two second expansion sections of this two adjacent dumb-bell shape electrode.

In a preferred embodiment, the junction between those bridging line insulation ground and those rhombus electrodes is staggered.

In a preferred embodiment, the shape of this first expansion section and this second expansion section respectively is an isoceles triangle shape.In addition, this narrow be shaped as a strip, and this strip connects two drift angles of this isoceles triangle shape.

In a preferred embodiment, this first direction is perpendicular to this second direction.

In a preferred embodiment, this first direction is a sensing direction of this contact panel, and this second direction is a driving direction of this contact panel.In view of the above, those rhombus electrodes of arranging along this first direction form a sense wire, and those dumb-bell shape electrodes of arranging along this second direction form a drive wire.

In another preferred embodiment, this first direction is a driving direction of this contact panel, and this second direction is a sensing direction of this contact panel.In view of the above, those rhombus electrodes of arranging along this first direction form a drive wire, and those dumb-bell shape electrodes of arranging along this second direction form a sense wire.

In a preferred embodiment; The electrod-array of contact panel of the present invention further comprises a plurality of point discharge assemblies, and those point discharge assemblies are arranged at edge and those first expansion sections of those dumb-bell shape electrodes and the edge of those second expansion sections of those rhombus electrodes.

According to the design of dumb-bell shape electrode of the present invention, if the bridging line that connects two first expansion sections is after producing fracture, its electric signal also can be by the bridging line conducting that connects two second expansion sections, and has increased reliability of products.Therefore, after the present invention had overcome known bridging line fracture, this line then formed the shortcoming that opens circuit.In addition, according to the design of dumb-bell shape electrode of the present invention, also can promote the accuracy of touch-control location.

For letting above and other objects of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, hereinafter will be enumerated embodiment and explain, and cooperate appended graphicly, elaborate as follows.

 

Description of drawings

Fig. 1 is the electrod-array of known contact panel.

Fig. 2 illustrates the schematic top plan view of electrod-array of the contact panel of first preferred embodiment of the present invention.

Fig. 3 illustrates the diagrammatic cross-section of Fig. 2 along A-A ' line segment.

Fig. 4 illustrates the diagrammatic cross-section of Fig. 2 along B-B ' line segment.

Fig. 5 illustrates the electrod-array of the contact panel of second preferred embodiment of the present invention.

Embodiment

Below conjunction with figs. is specified the preferred embodiment of location structure of the present invention, wherein identical element numbers is the same or analogous assembly of representative in difference is graphic.Please with reference to Fig. 2, Fig. 2 illustrates the schematic top plan view of electrod-array of the contact panel of first preferred embodiment of the present invention, wherein is the electrod-array of representing the contact panel of this preferred embodiment with label 200.The electrod-array 200 of this contact panel comprises a plurality ofrhombus electrode 220, a plurality of dumb-bell shape electrode 240 and a plurality ofbridging lines 250.

As shown in Figure 2, thoserhombus electrodes 220 are arranged in several column along a first direction D1, and thoserhombus electrodes 220 of each row interconnect on this first direction D1.In this preferred embodiment, this first direction D1 is a vertical direction.Those dumb-bell shape electrodes 240 are arranged in the plural number row along a second direction D2, and in this preferred embodiment, this second direction D2 is a horizontal direction.Each dumb-bell shape electrode 240 has onefirst expansion section 242, onesecond expansion section 244, and connects a narrow 246 of thisfirst expansion section 242 and this second expansion section 244.In this embodiment, the closure of this narrow 246 is perpendicular to this second direction D2, i.e. first direction.That is;First expansion section 242 that is arranged as each dumb-bell shape electrode 240 with those dumb-bell shape electrodes 240 of delegation is nearfirst expansion section 242 of second direction and adjacent dumb-bell shape electrode 240; Andsecond expansion section 244 of each dumb-bell shape electrode 240 is nearsecond expansion section 244 of second direction and adjacent dumb-bell shape electrode 240, andfirst expansion section 242 of each dumb-bell shape electrode 240 sees through narrow 246 and is connected with second expansion section 244.As shown in the figure, eachrhombus electrode 240 is arranged on along between the two adjacent dumb-bell shape electrodes 240 on this second direction D2.

In this preferred embodiment, the shape of thisfirst expansion section 242 and thissecond expansion section 244 respectively is an isoceles triangle shape.In addition, this narrow 346 be shaped as a strip, and this strip connects two drift angles of this isoceles triangle shape.Yet the present invention does not limit thisfirst expansion section 242, thissecond expansion section 244, reaches the concrete shape of this narrow 246.

Please in the lump with reference to Fig. 2 to Fig. 4, Fig. 3 illustrates the diagrammatic cross-section of Fig. 2 along A-A ' line segment, and Fig. 4 illustrates the diagrammatic cross-section of Fig. 2 along B-B ' line segment.Thosebridging lines 250 are respectively applied for along this second direction D2 and electrically connect with these twofirst expansion sections 242 of this two adjacent dumb-bell shape electrode 240 of delegation and connect this two second expansion sections 244.Particularly,bridging line 250 is arranged on thesubstrate 300, and its material is preferably metal.As shown in Figure 3, the junction between thosebridging line 250 insulation ground and thoserhombus electrodes 220 is staggered.Particularly, cover a layer insulating 320 in thisbridging line 250, and thisinsulation course 320 in thisfirst expansion section 242 of dumb-bell shape electrode 240 and the appropriate location of this second expansion section 244 (like two base angles of isosceles triangle) exposecontact hole 322 and 324 arranged.Then,rhombus electrode 220 that transparent conductive material is processed and dumb-bell shape electrode 240 are covered on theinsulation course 320, and its material is preferably tin indium oxide Indium Tin Oxide, ITO) or indium zinc oxide Indium Zinc Oxide, and IZO).Wherein thisfirst expansion section 242 and thissecond expansion section 244 of two adjacent dumb-bell shape electrodes 240 see throughcontact hole 322 and 324 and electrically connect these bridging lines 250.At last, also be coated with layerprotective layer 340 onrhombus electrode 220 and the dumb-bell shape electrode 240.

Please refer again to Fig. 2, with present embodiment, this first direction D1 (vertical direction) is perpendicular to this second direction D2 (horizontal direction).Yet the present invention does not limit first direction D1 and this second direction D2 is orthogonal, and both also can press from both sides other angle for it.In this embodiment, this first direction D1 is a sensing (sensing) direction of this contact panel, and this second direction D2 is that one of this contact panel drives (driving) direction.In view of the above, thoserhombus electrodes 220 of arranging along this first direction D1 form a sense wire, and those dumb-bell shape electrodes 240 of arranging along this second direction D2 form a drive wire.

Please refer again to Fig. 2; When the user touches the contact panel of present embodiment and has produced touch points T; 220 at rhombus electrode at touch points T only can produce appearance (mutual capacitance) effect mutually with the dumb-bell shape electrode 240 of theserhombus electrode 220 left and right sides; Then then can accurately to draw touch points T be on the position of drive wire II to contact panel, but not on the position of drive wire I or drive wire III.The electrod-array of all implementing with the rhombus electrode in the known technology can get preferable sensing accuracy.

In another preferred embodiment, this first direction D1 is a driving direction of this contact panel, and this second direction D2 is a sensing direction of this contact panel.In view of the above, thoserhombus electrodes 220 of arranging along this first direction D1 form a drive wire, and those dumb-bell shape electrodes 240 of arranging along this second direction D2 form a sense wire.

Please with reference to Fig. 5.Fig. 5 illustrates the electrod-array of the contact panel of second preferred embodiment of the present invention.The electrod-array 400 of the contact panel of second preferred embodiment is except comprising above-mentionedrhombus electrode 220, dumb-bell shape electrode 240 andbridging line 250; Further comprise a plurality ofpoint discharge assemblies 420; Thosepoint discharge assemblies 420 are arranged at edge and thisfirst expansion section 242 of this dumb-bell shape electrode 240 and the edge of thissecond expansion section 244 of thisrhombus electrode 220; Makerhombus electrode 220 can see throughpoint discharge assembly 420 by this and have more static discharge route; Electric charge to reduce in the electrode is accumulated in thesingle bridging line 250, and then avoids causing the contact panel damage to cause and can't move or judge by accident, to improve the product durability.

In sum, see through the design of dumb-bell shape electrode 240 of the present invention, if thebridging line 250 that connects twofirst expansion sections 242 is after producing fracture, its electric signal also can be by bridgingline 250 conductings that connect twosecond expansion sections 244, and have increased reliability of products.In view of the above, after the present invention had overcomeknown bridging line 250 fractures, this line then formed the shortcoming that opens circuit.In addition, according to the design of dumb-bell shape electrode 240 of the present invention, also can promote the accuracy of touch-control location.

Though the present invention with preferred embodiment openly as above, so it is not in order to limit the present invention, to have common knowledge the knowledgeable in the technical field under the present invention, not break away from the spirit and scope of the present invention, when doing various changes and retouching.Therefore protection scope of the present invention is as the criterion when looking aforesaid the claim person of defining.

Claims (10)

1. the electrod-array of a contact panel is characterized in that, comprises:

A plurality of rhombus electrodes, those rhombus electrodes are arranged along a first direction, and those rhombus electrodes interconnect on this first direction;

A plurality of dumb-bell shape electrodes; Those dumb-bell shape electrodes are arranged along a second direction; Each dumb-bell shape electrode has one first expansion section, one second expansion section, reaches a narrow that connects this first expansion section and this second expansion section, and wherein each rhombus electrode is arranged on along between the two adjacent dumb-bell shape electrodes on this second direction; And

A plurality of bridging lines are respectively applied for along this second direction and electrically connect these two first expansion sections of this two adjacent dumb-bell shape electrode and electrically connect these two second expansion sections of this two adjacent dumb-bell shape electrode.

2. the electrod-array of contact panel as claimed in claim 1 is characterized in that, the junction between those bridging line insulation ground and those rhombus electrodes is staggered.

3. the electrod-array of contact panel as claimed in claim 1 is characterized in that, the shape of this first expansion section and this second expansion section respectively is an isoceles triangle shape.

4. the electrod-array of contact panel as claimed in claim 3 is characterized in that, this narrow be shaped as a strip, and this strip connects two drift angles of this isoceles triangle shape.

5. the electrod-array of the contact panel of stating like claim 1 is characterized in that this first direction is perpendicular to this second direction.

6. the electrod-array of the contact panel of stating like claim 1 is characterized in that this first direction is a sensing direction of this contact panel, and this second direction is a driving direction of this contact panel.

7. the electrod-array of contact panel as claimed in claim 6 is characterized in that, those rhombus electrodes of arranging along this first direction form a sense wire, and those dumb-bell shape electrodes of arranging along this second direction form a drive wire.

8. the electrod-array of contact panel as claimed in claim 1 is characterized in that, this first direction is a driving direction of this contact panel, and this second direction is a sensing direction of this contact panel.

9. the electrod-array of contact panel as claimed in claim 8 is characterized in that, those rhombus electrodes of arranging along this first direction form a drive wire, and those dumb-bell shape electrodes of arranging along this second direction form a sense wire.

10. the electrod-array of contact panel as claimed in claim 1; It is characterized in that; Further comprise a plurality of point discharge assemblies, those point discharge assemblies are arranged at edge and those first expansion sections of those dumb-bell shape electrodes and the edge of those second expansion sections of those rhombus electrodes.

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