CN102591541A

CN102591541A - Wire arrangement structure for single-layer indium tin oxide (ITO)

Info

Publication number: CN102591541A
Application number: CN2012100163847A
Authority: CN
Inventors: 张开立
Original assignee: Suzhou Pixcir Microelectronics Co Ltd
Current assignee: Suzhou Pixcir Microelectronics Co Ltd
Priority date: 2012-01-19
Filing date: 2012-01-19
Publication date: 2012-07-18

Abstract

Provided is a wire arrangement structure for single-layer indium tin oxide (ITO). Touch control electrodes of two types are distributed on an ITO layer, first touch control electrodes are in unidirectional sawtooth shapes, second touch control electrodes are in bidirectional sawtooth shapes, at least one second touch control electrode is positioned in a gap between two first touch control electrodes, sawteeth of two adjacent electrodes are meshed mutually, and cross points between every two adjacent teeth in the same direction of the second touch control electrodes are arranged on the same line. Compared with the prior art, a capacitance touch screen is provided with a plurality of touch control electrodes on the ITO layer, thereby being simple in structure, reducing ITO layers and reducing cost of the touch screen. In addition, due to the sawtooth-shaped touch control electrodes, the electrodes on the ITO layer are distributed compactly, the edges are led to have good sensing capability, and edge accuracy and linearity of the ITO layer are improved.

Description

The wire structures of a kind of individual layer ITO

Technical field

The present invention relates to the wire structures of a kind of ITO, refer in particular to the wire structures of a kind of individual layer ITO.

Background technology

So-called ITO (indium tin oxide) is a kind of critical material that is used to produce LCD, and at present, it has all had in fields such as instrument and meter, computing machine, electronic watch, game machine and household electrical appliance very widely uses.The capacitive touch screen of big heat also is to utilize ITO to accomplish the action that detecting touches on the market in recent years; And the wiring of ITO generally is double-deck on the capacitance touch screen; Its cardinal principle is: utilize people's bulk electric field; When the user touched, the mutual capacitance (also claiming coupling capacitance) of the infall sensing unit of surface row or row can change, and finally can detect the particular location of touch point according to above-mentioned variation.

The structure of common double-deck ITO is a diamond structure; Its double-deck ITO is laid in respectively on the ipsilateral of glass substrate; For fear of the mutual conduction between the electrode,, so just can double-deck ITO be laid on the same side of glass substrate so bridge contact need be set on glass substrate.Though said method has been realized the action that detecting touches, the touch screen structure of the double-deck ITO of this employing, not only complex process, and bridge joint place damages easily, and the product yield is low, causes cost to raise.In order to overcome above-mentioned shortcoming, part manufacturer is arranged to rectangle with the structure of ITO, two-sidedly then is arranged on the two-layer of glass substrate; So, really simple much of technology, and improved the product yield; But what still adopt is the wire structures of double-deck ITO; The cost of ITO own is just higher, adds structure of two layers, and the thickness that forms touch-screen has thus also just been increased.If can overcome the limitation that double-deck ITO layouts brings, so no matter be to consider that from the cost or the structure of touch-screen individual layer ITO all has more advantages.

Therefore need solve above problem for users provide the wire structures of a kind of easier ITO.

Summary of the invention

The actual technical matters to be solved of the present invention is how to provide a kind of technology simple, the wire structures of individual layer ITO with low cost.

In order to realize above-mentioned purpose of the present invention; The invention provides the wire structures of a kind of individual layer ITO; Be laid with two kinds of touch-control electrodes on its ITO layer; Said first kind of touch-control electrode is unidirectional zigzag fashion, and said second kind of touch-control electrode then is two-way zigzag fashion, is laid with at least one said second kind of touch-control electrode in said two first kind of touch-control gaps between electrodes; The mutual interlock of sawtooth between two adjacent electrodes, on said second kind of touch-control electrode on per two same directions the intersection point between the adjacent tooth drop on the same straight line.

The wire structures of individual layer ITO of the present invention; The wiring of double-deck relatively ITO, manufacturing process is simpler, so with low cost; Moreover; The distribution of said ITO layer top electrode is tightr, even part has also had good sensing capability on the edge of, has improved the edge definition and the linearity of ITO layer.

Description of drawings

Fig. 1 is a kind of embodiment according to individual layer ITO wiring according to the invention;

Fig. 2 is a kind of touch-control electrode structure synoptic diagram in the individual layer ITO wiring according to the invention.

Embodiment

Below in conjunction with accompanying drawing and a kind of embodiment the present invention is further described.

Please refer to shown in Figure 1; The present invention relates to the wire structures of a kind of individual layer ITO; Be laid with two kinds of touch-

control electrodes

11 and 12 on its ITO layer 1; Said first kind of touch-control electrode 12 is unidirectional zigzag fashion, and 11 at said second kind of touch-control electrode is two-way zigzag fashion, is laid with at least one said second kind of touch-control electrode 11 in the gap between said two first kind of touch-control electrodes 12; The mutual interlock of sawtooth between two adjacent electrodes, on said second kind of touch-control electrode 11 on per two same directions the intersection point between the adjacent tooth drop on the same straight line.

Said first kind of touch-control electrode 12 is laid in the edge of said ITO layer 1, and the electrode shape size on around the said ITO layer 1 is merely the half the of said first kind of touch-control electrode 12 or second kind of touch-control electrode 11.Concrete, the electrode shape on 1 four angle of said ITO layer just in time is the half the of said first kind of touch-control electrode 12 with size, and the electrode shape in the middle part of said ITO layer 1 four limit just in time is the half the of said second kind of touch-control 11 with size.The said zigzag fashion of said first kind of touch-control electrode is corresponding with the zigzag fashion of said second kind of touch-control electrode; Just can lay between any two adjacent said touch-control electrodes with the form splicing of sawtooth interlock; In said ITO layer 1, can lay the said touch-control electrode 11 of a plurality of repetitions, depend on the size of said ITO layer 1.Said zigzag fashion can be that triangle can be an arc also, depends on the wiring needs of said ITO layer 1.The adjacent edge of said touch-control electrode of any two mutual interlocks leaves the space, to guarantee the independence between each electrode, avoids mutual conduction.

Please refer to shown in Figure 2ly, the shape that is laid in the said second kind of touch-control electrode 11 in the middle of the said ITO layer can be regarded as the zigzag of horizontal bidirectional, and the summit A of the opening part of same direction sawtooth, B, C, D, E, F are on same the straight line.Such design feature can make whole Butut compact more, and said ITO layer 1 reaches the higher linearity when detecting touch points.

Compared with prior art, capacitive touch screen of the present invention is provided with a plurality of touch-control electrodes on an ITO layer, simple in structure, and has reduced the ITO layer, has also reduced the cost of touch-screen.In addition, owing to laid the electrode of two kinds of different structures, cause the distribution of said ITO layer top electrode tightr, even part has also had good sensing capability on the edge of, improved the edge definition and the linearity of ITO layer.

The present invention is not limited to the foregoing description, and said touch-control electrode also can be selected other shapes for use, and the said unit area that comprises what depend on, just gives unnecessary details no longer one by one because principle is identical, all should list in protection scope of the present invention.

Claims

1. the wire structures of an individual layer ITO; Be laid with two kinds of touch-control electrodes on its ITO layer; Said first kind of touch-control electrode is unidirectional zigzag fashion; Said second kind of touch-control electrode then is two-way zigzag fashion; Be laid with at least one said second kind of touch-control electrode between said two first kind of touch-control electrodes, the mutual interlock of sawtooth between any two adjacent electrodes is characterized in that: on said second kind of touch-control electrode on per two same directions the intersection point between the adjacent tooth drop on the same straight line.

2. wire structures as claimed in claim 1 is characterized in that: said first kind of touch-control electrode is laid in the edge of said ITO layer.

3. wire structures as claimed in claim 2 is characterized in that: the electrode shape size on the edge of ITO layer is merely the half the of said first kind of touch-control electrode or second kind of touch-control electrode.

4. wire structures as claimed in claim 1 is characterized in that: the zigzag fashion of said first kind of touch-control electrode is corresponding with the zigzag fashion of said second kind of touch-control electrode.

5. like claim 1 or 4 described wire structures, it is characterized in that: said zigzag fashion can be that triangle also can be an arc.

6. wire structures as claimed in claim 1 is characterized in that: the adjacent edge of said touch-control electrode of any two mutual interlocks leaves the space.