CN101566893B

CN101566893B - Method for realizing one-layer IT0 wiring on touch-control panel and working principle and flow

Info

Publication number: CN101566893B
Application number: CN2009100269962A
Authority: CN
Inventors: 刘代强; 洪锦维
Original assignee: Suzhou Pixcir Microelectronics Co Ltd
Current assignee: Suzhou Pixcir Microelectronics Co Ltd
Priority date: 2009-05-22
Filing date: 2009-05-22
Publication date: 2012-01-04
Anticipated expiration: 2029-05-22
Also published as: CN101566893A

Abstract

The invention provides a method for wiring only one layer of ITO on a touch-control panel. The method comprises the following steps that: (a) mutually parallel ITOs consist of a plurality of polygons and connecting lines; (b) a polygon on each ITO is a regular polygon with the same size and the same shape; (c) polygons on two arbitrary adjacent ITOs are staggered and complemented; (d) the gap width between the two arbitrary adjacent ITOs is the same; and (e) both the length and the width of connecting lines connecting two arbitrary polygons on each ITO are the same respectively. The method capable of realizing the wiring on the touch-control panel only through one layer of ITO not only reduces the workload of workers but also improves the qualified rate of products and saves the cost.

Description

The implementation method of one-layer IT 0 wiring on touch-control panel and method of work and flow process

Technical field

The present invention relates to a kind of wiring method on contact panel, how to realize ITO and relevant method of work and flow process, refer in particular to the implementation method that only connects up with one deck ITO, and under this wire laying mode the method for work and the flow process of touch-control.

Background technology

Along with the continuous development of electronic technology, can be used for continuously hand-written touch screen and more and more receive making a pet of of people, not only because it is simple to operate, functional diversity outer but also price also descends gradually with the multiple spot input; Usually; Touch-screen generally comprises a contact panel, a controller and a software driver, and wherein contact panel is the transparent panel that has touch sensitive surface, generally is positioned at the front of display screen; The viewing area of display screen that made touch-sensitive surface covers; Contact panel writes down touch event, and sends to controller to touch signal, by controller computer system is sent in these information processings again; At last, software driver is translated into computer event to touch event.

At present, in the touch technology field, generally be to have applied a kind of material that can stored charge on the contact panel; This material need possess the good and higher characteristic of transparency of electric conductivity simultaneously, like ITO (being commonly called as indium tin oxide), usually need be on panel applied in two coats; A kind of mode is two-sided bilayer, and promptly the upper and lower surface at panel all respectively covers one deck ITO, and another kind of mode is a single-surface double-layer; Promptly only on the one side of panel, cover two-layer ITO, wherein, have insulation course between the two-layer ITO; No matter be which kind of mode, among the two-layer ITO, one deck is the ITO electrode matrix of directions X; One deck is the ITO electrode matrix of Y direction, during operation, just can help the recognizing touch operation incident through monitoring the signal that occurs on each electrode and change, occur position and the amplitude that signal changes.Realize all these functions, all need two-layer ITO is fitted in accurately on the corresponding panel and could realize, and when two-layer applying, will inevitably run into the low problem of binding yield, can cause the increase of cost so virtually.

Therefore need provide a kind of to need one deck ITO on contact panel, to connect up just can to realize the wiring method of touch-control, solve above problem for the user.

Summary of the invention

The actual technical matters to be solved of the present invention is how only can conduct electricity not only transmittance but also good material such as ITO through one deck on contact panel, connect up with the method for realization touch-control.

In order to realize above-mentioned purpose of the present invention, the invention provides a kind of wiring method of one deck ITO on contact panel that only pass through, this method may further comprise the steps: every the ITO that (a) is parallel to each other is made up of some polygons and connecting line; (b) regular polygon that the polygon on every ITO is a size, shape is identical; (c) staggered complementary between the polygon on any adjacent two ITO; (d) gap width between adjacent two ITO is identical arbitrarily; (e) length of every any two polygonal connecting lines of the last connection of ITO is identical respectively with width.

The present invention also provides a kind of and only on contact panel, connected up to realize the method for work of touch-control through one deck ITO, may further comprise the steps: (a) when certain electric current passes through every ITO line, the ITO polygon produces certain voltage drop; (b) utilize scrambler that the polygonal mid-point voltage of each ITO is encoded; (c) touch point coordinate is confirmed through the adjacent polygonal phase alignment of ITO that has voltage drop to change.

The present invention provides a kind of again and only on contact panel, has connected up to realize the workflow of touch-control through one deck ITO, and may further comprise the steps: the every lead-in wire of (a) drawing from the electrode of ITO matrix connects touch-control IC successively; (b) handle the simulating signal of exporting by touch-control IC and change into digital signal through analog to digital converter ADC; (c) utilize scrambler that digital signal is encoded; (d) signal after will encoding is transferred to encode among the MCU computing and processing; (e) the calculation process result that will encode sends to main frame.

Implementation method and method of work and the flow process that only needs one deck ITO on contact panel, to connect up of the present invention is because only need one deck ITO, so therefore the low problem of yield that produces when not having two-layer fit has practiced thrift cost.

Description of drawings

Fig. 1 is the three-dimensional exploded view that the present invention utilizes the touch-screen of one deck ITO composition;

Fig. 2 is the ITO cabling of a kind of Y of the being parallel to axle that the present invention relates to;

Fig. 3 is the ITO cabling that the another kind that the present invention relates to is parallel to the X axle;

Fig. 4 is the workflow diagram that the present invention realizes touch-control;

If Fig. 5 is among the present invention the skeleton view of finger on ITO;

Embodiment

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

See also shown in Figure 1; The touch screen; Comprise contact panel such as base plate glass 1; Or the upper surface of base plate glass 1 is coated with the octagonal shape ITO matrix 2 that laterally vertically connects, and above ITO matrix 2, is coated with diaphragm 3, also can plate the hardness height under special circumstances, corrosion-resistant material adapts to different environment.

Please consult Fig. 2 and shown in Figure 3 simultaneously, or can otherwise be covered with one deck ITO matrix 2 through sputter, plating at the upper surface of base plate glass 1, this every ITO is made up of with connecting line 22 some octagons 21; And be parallel to each other between every ITO, wherein, the regular polygon that the octagon on every ITO is a size, shape is identical; And arbitrarily be staggered complementary the arrangement between the octagon 21 on adjacent two ITO, the gap width d between adjacent two ITO is identical arbitrarily, and the length that every ITO goes up the connecting line 22 that connects any two octagons 21 is also identical respectively with width; This ITO matrix can be the cabling that is parallel to the X axle, can be the cabling that is parallel to the Y axle also, after powering on; When certain electric current flows through every ITO line, because ITO itself has resistance, according to Ohm law; U=IR (U representative voltage wherein; I represents electric current, and R represents resistance), owing to shape, the size of each ITO octagon 21 are all the same; Each ITO octagon 21 all can produce identical voltage drop; Thereby can obtain the mid-point voltage of each ITO octagon 21, will change into digital signal by the simulating signal that this voltage drop produces through analog-to-digital conversion device ADC then, and then to this encoding digital signals; When touch-control took place, touch point coordinate was through computing obtains through coding to coding that the octagonal mid point of adjacent ITO that voltage drop changes is arranged.

See also the workflow synoptic diagram of said one deck ITO on contact panel that be shown in Figure 4; The every lead-in wire that picks out from each electrode of ITO matrix 2 is connected on the touch-control IC successively; Simulating signal through after the touch-control IC processing changes into digital signal through analog-to-digital conversion device ADC; And then by scrambler it is encoded, the processing of the signal after will encoding at last through single-chip microprocessor MCU obtains touch point coordinate and sends in the main frame, so just realized the touch-control of one deck ITO on contact panel.

See also shown in Figure 5; When or other object that can be used for touch-control of finger touched touch screen, touch point coordinate X, Y were definite through the adjacent octagonal phase alignment of ITO that the voltage drop change is arranged, described phase alignment; Be meant the adjacent formed geometric mid point of ITO octagon mid point that has voltage drop to change; The coordinate figure of this phase alignment is obtained by the coding computing of ITO octagon mid point coding, if finger touch is A to the useful area zone on the ITO, should relate to three adjacent ITO octagon B1, B2 and B3 by zone A so; The encoded radio of the octagonal mid point C1 of corresponding these three ITO, C2 and C3 can obtain through the coding to its mid-point voltage value; These three central points are linked in sequence successively constitutes a triangle C1C2C3, and the geometric center D of this triangle C1C2C3 promptly is corresponding touch point, and the coordinate figure of central point D can be calculated by the coding computing of these three central point C1, C2 and C3 coding; Thereby can obtain the touch point accurate localization; In like manner, and the like, if the useful area of contact only relates to two adjacent octagons; When promptly having only 2 adjacent ITO octagon generation voltage drops to change; The geometric center of the line segment that then is connected by these two octagonal mid points of ITO is that mid point is exactly the touch point accurate localization, and is same, and this touch point coordinate value also is that the coding computing through these two the octagonal mid points codings of the ITO that has voltage drop to change obtains.

More than the implementation method that on contact panel, connects up through one deck ITO; Not being must be octagonal shape, can be other shape also, like various regular polygons such as rhombus, hexagons; Contact panel both can make glass substrate, also can be the substrate that resin, film etc. constitute.

The implementation method and method of work and the flow process that below only need one deck ITO on contact panel, to connect up, the low problem of yield when not only having overcome two-layer ITO and fitting, thus improved the qualification rate of product, and practiced thrift cost.

Claims

1. one kind is only passed through the wiring method of one deck ITO on contact panel, and this method may further comprise the steps:

(a) every the ITO that is parallel to each other is made up of some polygons and connecting line;

(b) regular polygon that the polygon on every ITO is a size, shape is identical;

(c) staggered complementary between the polygon on any adjacent two ITO;

(d) gap width between adjacent two ITO is identical arbitrarily;

(e) length of every any two polygonal connecting lines of the last connection of ITO is identical respectively with width.

2. as claimed in claim 1 only through the wiring method of one deck ITO on contact panel, it is characterized in that: the wiring method of said one deck ITO or be parallel to the X axle or be parallel to the Y axle.

3. one kind is adopted the wiring method of one deck ITO on contact panel that only pass through as claimed in claim 1 to realize the method for work of touch-control, may further comprise the steps:

(a) when certain electric current passes through every ITO line, the ITO polygon produces certain voltage drop, thereby obtains the polygonal mid-point voltage of said ITO;

(b) simulating signal that above-mentioned voltage drop is produced changes into digital signal;

(c) utilize scrambler that the polygonal mid-point voltage of each ITO is encoded;

(d) touch point coordinate is confirmed through the adjacent polygonal phase alignment of ITO that has voltage drop to change.

4. one deck ITO that only passes through as claimed in claim 3 connects up on contact panel to realize the method for work of touch-control, and it is characterized in that: the phase alignment in said (c) is meant the formed geometric mid point of the polygonal mid point of ITO that has voltage drop to change by adjacent.

5. one deck ITO that only passes through as claimed in claim 3 connects up on contact panel to realize the method for work of touch-control, it is characterized in that: the coordinate figure of the phase alignment in said (c) is obtained through the coding computing by the polygonal mid point coding of ITO.

6. one kind is adopted the wiring method of one deck ITO on contact panel that only pass through as claimed in claim 1 to realize the workflow of touch-control, may further comprise the steps:

The every lead-in wire of (a) drawing from the electrode of ITO matrix connects touch-control IC successively;

(b) handle the simulating signal of exporting by touch-control IC and change into digital signal through analog to digital converter ADC;

(c) utilize scrambler that digital signal is encoded;

(d) signal after will encoding is transferred to encode among the MCU computing and processing;

(e) the calculation process result that will encode sends to main frame.

7. one deck ITO that only passes through as claimed in claim 6 connects up on contact panel to realize the workflow of touch-control, it is characterized in that: be the relevant position that is connected to touch-control IC from the every lead-in wire that the electrode of said one deck ITO matrix is drawn successively in the said step (a).