CN101655761B - Touch-control sensing structure of touch panel and touch sensing method thereof - Google Patents

Abstract

The invention provides a touch-control sensing device of a touch panel and a touch sensing method thereof. The touch-control sensing device comprises a plurality of first leads and first conductors, which are arranged in parallel. One end of each first lead is electrically coupled with the first conductor so as to divide the first conductor into a plurality of first line segments, and the resistance of each first lead is less than the resistance of each line segment, wherein when a display area of the touch panel is applied by external force, the first lead corresponding to the position referred by the external force is electrically coupled with a reference potential. The contact control sensing device has capability of sensing multipoint touch, cannot reduce the aperture opening rate of pixels because of not adopting a transistor to form a sensing unit and have shorter touch reaction time.

Description

The touch sensing device of contact panel and touch sensing method thereof

Technical field

The invention relates to the technology of contact panel, and particularly relevant for a kind of touch sensing device and touch sensing method thereof of contact panel.

Background technology

Flourish along with Touch Screen (touch screen); The touch sensing device of at present existing two kinds of in-building type Touch Screens is widely used; Wherein a kind of is the passive type touch sensing device, and another kind is active touch sensing device, respectively like Fig. 1 and shown in Figure 2.

Fig. 1 is the synoptic diagram of the Touch Screen that adopts the passive type touch sensing device.Please with reference to Fig. 1, this Touch Screen includes data driver 110, contact panel 120 and touching signal processing circuit 130.Contact panel 120 includes a plurality of pixels, each pixel by thin film transistor (TFT) (thin-film transistor, TFT), storage capacitors Cst and pixel capacitance Clc constitute.In addition, contact panel 120 also includes many data lines 140, many gate lines 150, many common electric potential lines 160, a plurality of sensing cell 170, many touching signal read line 180-1 and many touching signal read line 180-2.These sensing cells 170 promptly are to be used for the touch position of sensing user on contact panel 120; And each sensing cell 170 is all through one of them of touching signal read line 180-1 and one of them electric property coupling touching signal processing circuit 130 of touching signal read line 180-2, so that let touching signal processing circuit 130 can obtain respectively the transverse axis coordinate and the ordinate of orthogonal axes of touch position according to the signal that touching signal read line 180-1 and 180-2 are transmitted.

Can know that by Fig. 1 the sensing resolution of this Touch Screen depends on the distribution density of the sensing cell 170 in the contact panel 120.Yet; Because each sensing cell 170 all needs to couple touching signal processing circuit 130 through touching signal read line 180-1 and 180-2; And the distribution density of sensing cell 170 often is subject to the port number of touching signal processing circuit 130, causes often compelled decline of sensing resolution of Touch Screen.And if the sensing resolution of Touch Screen is reluctant to sacrifice by manufacturer, must adopt the higher also more expensive touching signal processing circuit 130 of port number, cause the increase of cost.In addition; Also because each sensing cell 170 all need couple touching signal processing circuit 130 through touching signal read line 180-1 and 180-2; Event is along with the increase of the distribution density of sensing cell 170; The peripheral wiring of contact panel 120 also can and then increase, and causes frame (not illustrating) width of contact panel 120 also must increase.This passive type touch sensing device also has a shortcoming, is exactly its sensing that can only carry out single-point contact (single touch).

Fig. 2 is the synoptic diagram of the Touch Screen that adopts active touch sensing device.Please with reference to Fig. 2, this Touch Screen includes data driver 210, contact panel 220 and touching signal processing circuit 230.Contact panel 220 includes a plurality of pixels, each pixel also by thin film transistor (TFT) (thin-film transistor, TFT), storage capacitors Cst and pixel capacitance Clc constitute.In addition, contact panel 220 also includes many data lines 240, many gate lines 250, many common electric potential lines 260, a plurality of sensing cell 270 and many touching signal read lines 280.These sensing cells 270 are to be used for the touch position of sensing user on contact panel 220 equally; And each sensing cell 270 all through one of them electric property coupling touching signal processing circuit 230 of touching signal read line 280, is touched transverse axis coordinate and the ordinate of orthogonal axes that signal processing circuit 230 can obtain touch position according to the signal that touching signal read line 280 is transmitted so that let.

Can know by Fig. 2; The sensing resolution of this Touch Screen depends on the distribution density of the sensing cell 270 in the contact panel 220 equally; Distribution density at sensing cell 270 often is subject under the port number of touching signal processing circuit 230, and the sensing resolution of Touch Screen is often compelled to descend.If the sensing resolution of Touch Screen is reluctant to sacrifice by manufacturer, must adopt the higher also more expensive touching signal processing circuit 230 of port number, cause the increase of cost.In addition; Also because each sensing cell 270 all need couple touching signal processing circuit 230 through touching signal read line 280; Event is along with the increase of the distribution density of sensing cell 270; The peripheral wiring of contact panel 220 also can and then increase, and causes frame (not illustrating) width of contact panel 220 also must increase.

Though this active touch sensing device can carry out the sensing of multi-point touch (multi touch); Yet, thereby reduced aperture ratio of pixels (aperture ratio) and caused the decline of the transmittance of pixel because the sensing cell 270 of this kind framework is to be made up of thin film transistor (TFT).In addition,, and must operate, cause the touch-control reaction time of this Touch Screen slower along with the sweep velocity of gate line 250 also because the sensing cell 270 of this kind framework is coupled to gate line 250.

Summary of the invention

The object of the invention is exactly that a kind of touch sensing device of contact panel is being provided.Adopt the Touch Screen of this kind touch sensing device need not use the touching signal processing circuit of high channel number, just can enjoy high sensing resolution, and the peripheral wiring of the contact panel of Touch Screen is also less, thereby needn't increases the border width of contact panel.In addition, for traditional passive type touch sensing device, but touch sensing device of the present invention has the ability of sensing multi-point touch; And for traditional active place's control sensing structure, touch sensing device of the present invention can not reduce aperture ratio of pixels, and the touch-control reaction time is also very fast.

Another order of the present invention provides a kind of touch sensing method corresponding to above-mentioned touch sensing device.

The present invention proposes a kind of touch sensing device of contact panel.This touch sensing device includes many first leads that laterally arrange and first conductor.A wherein end electric property coupling first conductor of each first lead, first conductor being divided into a plurality of first line segments, and the resistance of each first lead is less than the resistance of each first line segment.Wherein, when the viewing area of contact panel receives an external force, just be able to electric property coupling one reference potential corresponding to first lead of this external force indication position.

The present invention proposes a kind of touch sensing method of contact panel in addition.Said contact panel adopts a touch sensing device; And this touch sensing device includes first conductor and many first leads that laterally arrange; Wherein, A wherein end electric property coupling first conductor of each first lead, first conductor being divided into a plurality of first line segments, and the resistance of each first lead is less than the resistance of each first line segment.And when the viewing area of contact panel receives an external force, just be able to electric property coupling one reference potential corresponding to first lead of this external force indication position.The method includes the following step: judged whether that the touching behavior takes place; And when the touching behavior takes place, calculate the coordinate of touch position according to the resistance of two equivalent resistances that recorded respectively from two ends of first conductor.

The present invention proposes the touch sensing device of another kind of contact panel again.This touch sensing device includes a conductor and two touching signal read lines.Said conductor has N conductive structure that laterally arranges, and each conductive structure has first lead and second lead that laterally arranges.Each lead has first end and second end, and first end points to first direction, and second end points to second direction.First end of the first end electric property coupling, second lead of first lead in K conductive structure, and second end of first lead of K+1 the conductive structure of the second end electric property coupling of second lead of K conductive structure, N and K are all natural number, and 1≤K＜N.Touch signal read lines then in order to distinguish two end points of the above-mentioned conductor of electric property coupling as for above-mentioned two.Wherein, when the viewing area of contact panel received an external force, above-mentioned conductor just was able to electric property coupling one reference potential corresponding to this external force indication position part.

The present invention reintroduces the touch sensing method of another kind of contact panel.Said contact panel adopts a touch sensing device, and this touch sensing device includes a conductor and two touching signal read lines.Said conductor has N conductive structure that laterally arranges, and each conductive structure has first lead and second lead that laterally arranges.Each lead has first end and second end, and first end points to first direction, and second end points to second direction.First end of the first end electric property coupling, second lead of first lead in K conductive structure, and second end of first lead of K+1 the conductive structure of the second end electric property coupling of second lead of K conductive structure, N and K are all natural number, and 1≤K＜N.When the viewing area of contact panel received an external force, above-mentioned conductor just was able to electric property coupling one reference potential corresponding to this external force indication position part.Touch signal read lines then in order to distinguish two end points of the above-mentioned conductor of electric property coupling as for above-mentioned two.Said method comprises the following steps: to have judged whether that the touching behavior takes place; And when the touching behavior took place, the resistance of the resulting equivalent resistance of a wherein end of the above-mentioned conductor of foundation was calculated the coordinate of touch position.

The present invention utilizes a conductor and the many leads that laterally arrange to constitute the touch sensing device that is suitable for sensing one dimension coordinate.Because the resistance of each lead is less than the resistance of each line segment of above-mentioned lead, so the resistance of each lead can be ignored.In case Touch Screen is judged when having the touching behavior to take place, and just can record the resistance of two equivalent resistances from two ends of above-mentioned conductor respectively, and because two measured resistances can be used to represent different line segment numbers, so can calculate a dimension coordinate of touch position according to this.And if adopt two groups of above-mentioned touch sensing devices, as long as judge the touch position of reality again, just can obtain the two-dimensional coordinate of touch position.

Similarly, the present invention also utilizes a plurality of conductive structures that laterally arrange to form a conductor, but and forms the touch sensing device of another kind sensing two-dimensional coordinate according to this.Because touch position is far away more from the end points of above-mentioned conductor, the resistance of measured equivalent resistance is just big more.Therefore, in case Touch Screen judge when having the touching behavior to take place, just can calculate the two-dimensional coordinate of touch position according to the resistance of the measured equivalent resistance of a wherein end of above-mentioned conductor.

Can know that through above explanation the present invention utilizes above-mentioned conductor to obtain the coordinate figure of touch position, and the end points that the touching signal processing circuit only need couple above-mentioned conductor can be operated.Therefore; Adopt the Touch Screen of touch sensing device of the present invention need not use the touching signal processing circuit of high channel number; Just can enjoy high sensing resolution, and the peripheral wiring of the contact panel of Touch Screen is also less, thereby needn't increases the border width of contact panel.In addition; Owing to can record the resistance of two equivalent resistances respectively from two ends of same conductor; To represent different line segment numbers; Or calculate the distance of touch position and conductor two ends according to the resistance of these two equivalent resistances, so for traditional passive type touch sensing device, but touch sensing device of the present invention has the ability of sensing multi-point touch.And for traditional active place's control sensing structure, touch sensing device of the present invention is not owing to adopt any transistor to constitute sensing cell, thus can not reduce aperture ratio of pixels, and the touch-control reaction time is also very fast.

Description of drawings

Fig. 1 is the synoptic diagram of the Touch Screen of employing passive type touch sensing device.

Fig. 2 is the synoptic diagram of the Touch Screen of the active touch sensing device of employing.

Shown in Figure 3 is the touch sensing device of accordinging to the contact panel of one embodiment of the invention.

Shown in Figure 4 is inner colored filter and the configuration relation of touch sensing device on the space of contact panel.

Fig. 5 is the diagrammatic cross-section of contact panel.

How Fig. 6 carries out the sensing of single-point contact in order to the touch sensing device of key diagram 3.

How Fig. 7 carries out the sensing of multi-point touch in order to the touch sensing device of key diagram 3.

Shown in Figure 8 is the touch sensing device of accordinging to the contact panel of another embodiment of the present invention.

Shown in Figure 9 is the touch sensing device of accordinging to the contact panel of another embodiment of the present invention.

Shown in Figure 10 is the touch sensing device of accordinging to the contact panel of another embodiment of the present invention.

Shown in Figure 11 is the touch sensing device of accordinging to the contact panel of another embodiment of the present invention.

Shown in Figure 12 is the touch sensing device of accordinging to the contact panel of another embodiment of the present invention.

Figure 13 is the process flow diagram according to the touch sensing method of one embodiment of the invention.

Shown in Figure 14 is the touch sensing device of accordinging to the contact panel of another embodiment of the present invention.

Figure 15 is the process flow diagram according to the touch sensing method of another embodiment of the present invention.

Drawing reference numeral

110,210: data driver

120,220: contact panel

130,230: the touching signal processing circuit

140,240: data line

150,250: gate line

160,260: the common electric potential line

170,270: sensing cell

180-1,180-2,280,312,314,322,324,812,814,822,824,912,914,922,924,1012,1014,1022,1024,1112,1114,1122,1124,1132,1134,1142,1144,1212,1214,1216,1218,1222,1224,1226,1228,1420,1430: touching signal read line

310,320,810,820,910,920,1010,1020,1110,1120,1130,1140,1210,1220,1410: conductor

330～348,830～856,930～952: lead

502: the lower surface of colored filter

504,512,514:ITO conductive material

506: the upper surface of array base palte

508,510: metal level

520: external force

602: contact panel

604: the viewing area

606,612: touch position

608,610,614,616: resistance

1210-1,1210-2,1220-1,1220-2: parts

1412: conductive structure

1414: the first leads

1416: the second leads

1440,1450: arrow

S1302, S1304, S1502, S1504: step

X1, X2, Y1, Y2: end points

Embodiment

For let above-mentioned and other purposes of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates appended accompanying drawing, elaborates as follows.

First embodiment:

Please with reference to Fig. 3, the touch sensing device that it is depicted as according to the contact panel of one embodiment of the invention is suitable for the two-dimensional coordinate of sensing touch position.As shown in the figure, this touch sensing device mainly includes conductor 310, conductor 320 and lead 330～348.In addition, this touch sensing device also includes touching signal read line 312,314,322 and 324.Lead 330～336th laterally arranges, and a wherein end electric property coupling conductor 310 of lead 330～336, so that conductor 310 is divided into a plurality of line segments.Lead 338～348th laterally arranges, and a wherein end electric property coupling conductor 320 of lead 338～348, so that conductor 320 is divided into a plurality of line segments.

Conductor 310 and 320 is to process with special material, makes the resistance of each line segment in conductor 310 and 320 all greater than the resistance of each lead.On the ideal, the resistance of each line segment in the conductor 310 and 320 should be much larger than the resistance of each lead.And in this example, conductor 310 and 320 is to adopt ITO (Indium Tin Oxide is translated into indium tin oxide) conductive material to process, and conductor 310 and 320 is orthogonal.As for touching signal read line 312 and 314; This two a wherein end is a wherein end points of electric property coupling conductor 310 separately, and the other end of touching signal read line 312 and 314 is all in order to electric property coupling touching signal processing circuit (not illustrating) or similar treatment circuit.Similarly, touching signal read line 322 and a wherein end of 324 be a wherein end points of electric property coupling conductor 320 separately, and the other end of touching signal read line 322 and 324 is all in order to above-mentioned touching signal processing circuit of electric property coupling or similar treatment circuit.

The colored filter (color filter) that touch sensing device shown in Figure 3 looks good with contact panel uses, and with Fig. 4 and Fig. 5 it is described.Shown in Figure 4 is inner colored filter and the configuration relation of touch sensing device on the space of contact panel.As shown in Figure 4, colored filter is to be configured on the touch sensing device.Please with reference to Fig. 5, it is the diagrammatic cross-section of contact panel.As shown in Figure 5, the lower surface 502 of colored filter is distributed with a plurality of substrate gap control materials (photo spacer), and has the lower surface 502 that one deck ITO conductive material (as indicating shown in 504) covers these substrate gap control materials and colored filter.In addition, this layer ITO conductive material 502 is gone back the reference potential Vcom (not illustrating) of electric property coupling contact panel.The upper surface 506 of array base palte disposes metal level 508 and 510.Metal level 508 is in order to form the lead 330～336 of Fig. 3, and metal level 510 is then in order to form the lead 338～348 of Fig. 3.Certainly, metal level 508 also can be the lead 338～348 in order to formation Fig. 3, and metal level 510 is then in order to form the lead 330～336 of Fig. 3.

Metal level 508 formed each lead all utilize ITO conductive material (as indicating shown in 512) to extend to the below that corresponding substrate gap is controlled material, and metal level 510 formed each lead also utilize ITO conductive material (as indicating shown in 514) to extend to the below of corresponding substrate gap control material.Thus; When the viewing area of contact panel (not illustrating) receives an external force when (as indicating shown in 520); Will force substrate gap control material to move down corresponding to this external force 520 indication positions; Cause ITO conductive material 504 to touch ITO conductive material 512 and 514 corresponding to this substrate gap control material, and then feasible horizontal lead and vertical lead electric property coupling reference potential Vcom corresponding to this substrate gap control material.That is to say, can be electrically coupled to reference potential Vcom corresponding to the horizontal lead of these external force 520 indication positions and vertical lead.

How Fig. 6 carries out the sensing of single-point contact in order to the touch sensing device of key diagram 3.Please with reference to Fig. 6, when the viewing area 604 of contact panel 602 receives an external force, corresponding to this external force indication position (, below being called touch position) as indicating shown in 606 just lead 334 and 342 be able to electric property coupling reference potential Vcom.Because touch position 606 is exactly lead 334 and 342 electric property coupling reference potential Vcom parts; So can be with in the lead 334; Begin to become resistance 608 by touch position 606 to the line segment equivalence of conductor 310; And can begin to become resistance 610 by touch position 606 in the lead 342 to the line segment equivalence of conductor 320.

Because the resistance of the resistance of above-mentioned each lead each line segment in conductor 310 and 320 makes that the resistance of above-mentioned resistance 608 and 610 is little of ignoring.Therefore, if the resistance of each line segment in the conductor 310 and 320 is R _s, the resistance from the measured equivalent resistance of Y1 end just can approximate 2R greatly so _s, and can approximate 3R greatly from the resistance of the measured equivalent resistance of Y2 end _sIn like manner, the resistance from the measured equivalent resistance of X1 end can approximate 3R greatly _s, and can approximate 4R greatly from the resistance of the measured equivalent resistance of X2 end _sThus; Just can calculate the transverse axis coordinate of touch position 606 from two measured resistances of two ends of conductor 310; And can calculate the ordinate of orthogonal axes of touch position 606 from two of conductor 320 two measured resistances, reach the detection of the two-dimensional coordinate of touch position 606.

How Fig. 7 carries out the sensing of multi-point touch in order to the touch sensing device of key diagram 3.Two touch position are arranged, respectively as indicating shown in 606 and 612 in Fig. 7.And in the sign 608,610,614 among the figure and 616 each corresponding naturally lead, begin to the resistance of the line segment institute equivalence one-tenth of corresponding conductor by touch position.Therefore, if the resistance of each line segment in the conductor 310 and 320 is R _s, and the resistance of resistance 608,610,614 and 616 is R in regular turn _M1, R _N1, R _M2And R _N2, so in theory, from the resistance R of the measured equivalent resistance of Y1 end _Y1, from the resistance R of the measured equivalent resistance of Y2 end _Y2, from the resistance R of the measured equivalent resistance of X1 end _X1And from the resistance R of the measured equivalent resistance of X2 end _X2This should be in regular turn shown in following formula (1)～formula (4):

$R_{Y1}=2R_s+\frac{R_{m1}\×(R_s+R_{m2})}{R_{m1}+(R_s+R_{m2})}---\left(1\right)$

$R_{Y2}=2R_s+\frac{R_{m2}\×(R_s+R_{m1})}{R_{m2}+(R_s+R_{m1})}---\left(2\right)$

$R_{X1}=3R_s+\frac{R_{n1}\×(2R_s+R_{n2})}{R_{n1}+(2R_s+R_{n2})}---\left(3\right)$

$R_{X2}=2R_s+\frac{R_{n2}\×(2R_s+R_{n1})}{R_{n2}+(2R_s+R_{n1})}---\left(4\right)$

Yet, because resistance R _M1, R _N1, R _M2And R _N2Little of ignoring the resistance R that therefore in fact records _Y1, R _Y2, R _X1And R _X2Can approximate 2R respectively greatly _s, 2R _s, 3R _sAnd 2R _s

Hold above-mentioned, by aforesaid 2R _s, 2R _s, 3R _sAnd 2R _sThese four numerical value can know that the length of counting conductor 310 about two line segments from the Y1 end will correspond to a touch position, and also can correspond to a touch position from the length of Y2 end counting conductor 310 about two line segments.In like manner, the length of counting conductor 320 about three line segments from the X1 end will correspond to a touch position, and also can correspond to a touch position from the length of X2 end counting conductor 320 about two line segments.Thus, will correspond to four possible touch position, comprise touch position 606 and 612, lead 334 and 346 this two confluces, also have lead 332 and 342 this two confluces.Owing in above-mentioned four possible touch position, have only two to be actual touch position, therefore must judge actual touch position again, to obtain the two-dimensional coordinate of practical touch position.

Below enumerate two kinds of modes of judging the practical touch position, but do not limit the present invention with this.Please refer again to Fig. 7.First kind of mode is to utilize above-mentioned formula (1) and formula (2) to calculate R _M1And R _M2Value, and utilize above-mentioned formula (3) and formula (4) to calculate R _N1And R _N2Value.Perhaps, known fixed value R also capable of using _sCalculate, for example directly with the actual resistance R that records _Y1Cut 2R _sObtain resistance R _M1, and directly with the actual resistance R that records _Y2Cut 2R _sObtain resistance R _M2In like manner, can be directly with the actual resistance R that records _X1Cut 3R _sObtain resistance R _N1, and directly with the actual resistance R that records _X2Cut 2R _sObtain resistance R _N2Next, just can be according to R _M1And R _M2The magnitude relationship of these two resistances, and R _N1And R _N2The magnitude relationship of these two resistances is judged actual touch position.With this example, because resistance R _M1Less than resistance R _M2, and resistance R _N1Greater than resistance R _N2So, should look touch position 606 and 612 and be actual touch position.Thus, just can obtain the two-dimensional coordinate of these two practical touch positions.

Please continue with reference to Fig. 7.The second way is to utilize the mistiming of touching to carry out the judgement of practical touch position.Suppose that touch position 606 at first is detected, just can write down touch position 606 earlier at the coordinate figure of X direction (i.e. the first dimension direction) with y direction (i.e. the second dimension direction).Subsequently, touch position 612 also is detected, so touch position 612, lead 334 and 346 this two confluces, also has lead 332 and 342 this two confluces all can be considered to be possible touch position.Thus, just can be according to the coordinate figure that is write down, come from these subsequent detection to possible touch position judge actual touch position.

For instance; Can be according to the coordinate figure that write down come from these subsequent detection to possible touch position; Remove the identical person of coordinate figure of X direction who possesses with the touch position 606 of record, just get rid of lead 334 and 346 this two confluces are the possibility of practical touch position.Then; According to the coordinate figure that write down come from these subsequent detection to possible touch position; Remove the identical person of coordinate figure of y direction who possesses with the touch position 606 of record, just get rid of lead 332 and 342 this two confluces are the possibility of practical touch position.Then, remaining possible touch position is regarded as actual touch position, just looks touch position 612 and be actual touch position.Certainly, also can be to remove the identical person of coordinate figure of y direction who possesses with the touch position 606 of record earlier, and then remove the identical person of coordinate figure who possesses with the X direction of the touch position 606 that writes down.Thus, just can further obtain the two-dimensional coordinate of two practical touch positions.

Further; When pushing thing the situation of take place sliding arranged; Each practical touch position that a very first time also capable of using is obtained from detected possible touch position of one second time (after the aforementioned very first time), is found out nearest person separately; The touch position of finding out being regarded as the practical touch position that above-mentioned second time obtained, and then obtain a coordinate group, so that utilize this coordinate group to demonstrate the above-mentioned sliding trace of pushing thing.

Second embodiment:

Teaching through first embodiment can be known, if only adopt the conductor 310 and the lead 330～336 of touch sensing device shown in Figure 3, or only adopts conductor 320 and lead 338～348, also can implement the sensing of touch position.If only implement the sensing of a dimension coordinate of touch position, just only need record two resistances from two ends of conductor, and a dimension coordinate that calculates touch position according to this gets final product; Yet, if will implement the sensing of the two-dimensional coordinate of touch position, just the above-mentioned formula (1) of need arranging in pairs or groups～formula (2) or formula (3)～formula (4) comes further to calculate the coordinate of another dimension.

The 3rd embodiment:

This embodiment is the wherein enforcement appearance attitude of first embodiment.Please with reference to Fig. 8, it is depicted as the touch sensing device according to the contact panel of another embodiment of the present invention.In Fig. 8, indicate 810 and 820 and all be expressed as conductor, indicate 812,814,822 and 824 and all be expressed as the touching signal read line, all be expressed as lead and indicate 830～856.This embodiment has increased the live width of lead 830～856, to reduce the resistance of lead 830～856.

The 4th embodiment:

This embodiment also is the wherein enforcement appearance attitude of first embodiment.Please with reference to Fig. 9, it is depicted as the touch sensing device according to the contact panel of another embodiment of the present invention.In Fig. 9, indicate 910 and 920 and all be expressed as conductor, indicate 912,914,922 and 924 and all be expressed as the touching signal read line, all be expressed as lead and indicate 930～952.The conductor 910 and 920 of this embodiment all has a plurality of continuous bendings, to increase the resistance of conductor 910 and 920.

The 5th embodiment:

This embodiment also is the wherein enforcement appearance attitude of first embodiment.Please with reference to Figure 10, it is depicted as the touch sensing device according to the contact panel of another embodiment of the present invention.In Figure 10, indicate 1010 and 1020 and all be expressed as conductor, indicate 1012,1014,1022 and 1024 and all be expressed as the touching signal read line, all be expressed as lead as for other horizontal straight line and vertical straight line.The conductor 1010 of this embodiment and 1020 this two to present cross staggered, and all horizontal leads electric property coupling conductor 1010 all, and all vertical leads electric property coupling conductor 1020 all.

The 6th embodiment:

This embodiment also is the wherein enforcement appearance attitude of first embodiment.Please with reference to Figure 11, it is depicted as the touch sensing device according to the contact panel of another embodiment of the present invention.In Figure 11; Indicate 1110,1120,1130 and 1140 and all be expressed as conductor; Indicate 1112,1114,1122,1124,1132,1134,1142 and 1144 and all be expressed as the touching signal read line, all be expressed as lead as for other horizontal straight line and vertical straight line.Wherein, conductor 1130 is parallel to conductor 1110, and conductor 1140 is parallel to conductor 1120.In addition, two ends of all horizontal leads are electric property coupling conductor 1110 and 1130 respectively, and two ends of all vertical leads difference electric property coupling conductor 1120 and 1140.

The conductor 1130 and 1140 of this embodiment is subsequent use conductor, and touching signal read line 1132,1134,1142 and 1144 is all subsequent use touching signal read line.When reaching, conductor 1110,1120 among the two relevant signal read line arbitrary being damaged arranged with this; For example be to receive static discharge (electrostatic discharge; ESD) impact and damaging; When causing to utilize conductor 1110 and 1120 correctly to detect touch position, just can utilize conductor 1130 and 1140 to detect touch position instead.Certainly, also can make into to be used as subsequent use conductor with conductor 1110 and 1120.Owing to have subsequent use conductor and subsequent use touching signal read line, the sensing of this touch sensing device is more stable, and is not afraid of the impact of static discharge.

The 7th embodiment:

This embodiment also is the wherein enforcement appearance attitude of first embodiment.Please with reference to Figure 12, it is depicted as the touch sensing device according to the contact panel of another embodiment of the present invention.In Figure 12, indicate 1210 and 1220 and all be expressed as conductor, indicate 1212,1214,1216,1218,1222,1224,1226 and 1228 and all be expressed as the touching signal read line, then all be expressed as lead as for other horizontal straight line and vertical straight line.The conductor 1210 of this embodiment is to be made up of parts 1210-1 and 1210-2, and parts 1210-1 and parts 1210-2 entity separation.Wherein, parts 1210-1 is in order to the horizontal lead of electric property coupling part, and parts 1210-2 is then in order to remaining horizontal lead of electric property coupling.

Similarly, conductor 1220 is to be made up of parts 1220-1 and 1220-2, and parts 1220-1 and parts 1220-2 entity separation.Wherein, parts 1220-1 is in order to vertical lead of electric property coupling part, and parts 1220-2 is then in order to remaining vertical lead of electric property coupling.Correspondence explanation by above-mentioned Fig. 3 can be known; Longitudinal conductor of a horizontal conductor collocation can carry out the detection of two touch position at least; Can carry out the detection of plural touch position so can know the touch sensing device that this Figure 12 shows by inference, but have the ability of sensing multi-point touch.

The teaching of above-mentioned first embodiment to the of integration seven embodiment can be summarized a basic mode of operation, and is shown in figure 13.Figure 13 is according to the process flow diagram of the touch sensing method of one embodiment of the invention, is applicable to a contact panel.Described contact panel adopts a touch sensing device; And this touch sensing device includes first conductor and many first leads that laterally arrange; Wherein, A wherein end electric property coupling first conductor of each first lead, first conductor being divided into a plurality of first line segments, and the resistance of each first lead is less than the resistance of each first line segment.And when the viewing area of contact panel receives an external force, just be able to electric property coupling one reference potential corresponding to first lead of this external force indication position.The method includes the following step: at first, judged whether that (shown in step S1302) takes place in the touching behavior; Then, when the touching behavior takes place, calculate the coordinate (shown in step S1304) of touch position according to the resistance of two equivalent resistances that recorded respectively from two ends of first conductor.

The 8th embodiment:

Please with reference to Figure 14, the touch sensing device that it is depicted as according to the contact panel of another embodiment of the present invention is suitable for the two-dimensional coordinate of sensing touch position.Shown in figure 14, this touch sensing device also includes touching signal read line 1420 and 1430 except including conductor 1410.Conductor 1410 has N conductive structure (as indicating shown in 1412) that laterally arranges.Each conductive structure has first lead and second lead that laterally arranges, respectively as indicating shown in 1414 and 1416.Each lead has first end and second end, and first end points to first direction (like the direction of arrow 1440 indications), and second end points to second direction (like the direction of arrow 1450 indications).

First end of the first end electric property coupling, second lead of first lead in K conductive structure; And second end of first lead of K+1 the conductive structure of the second end electric property coupling of second lead of K conductive structure; Wherein N and K are all natural number, and 1≤K＜N.Touch signal read lines then in order to distinguish two end points of electric property coupling conductor 1410 as for above-mentioned two.When the viewing area of contact panel received an external force, conductor 1410 just was able to electric property coupling reference potential Vcom corresponding to this external force indication position part.

Because touch position is far away more from the end points of conductor 1410, the resistance of measured equivalent resistance is just big more.Therefore, in case Touch Screen judge when having the touching behavior to take place, just can calculate the two-dimensional coordinate of touch position according to the resistance of the measured equivalent resistance of a wherein end of conductor 1410, to reach the detection of single-point contact.In addition, if calculate the two-dimensional coordinate of touch position, the detection that just can reach multi-point touch according to the resistance of two measured equivalent resistances of conductor 1,410 two ends.

Based on the teaching of above-mentioned the 8th embodiment, can summarize a basic mode of operation, shown in figure 15.Figure 15 is according to the process flow diagram of the touch sensing method of another embodiment of the present invention, is applicable to a contact panel.Described contact panel adopts a touch sensing device, and this touch sensing device includes a conductor and two touching signal read lines.Said conductor has N conductive structure that laterally arranges, and each conductive structure has first lead and second lead that laterally arranges.Each lead has first end and second end, and first end points to first direction, and second end points to second direction.First end of the first end electric property coupling, second lead of first lead in K conductive structure, and second end of first lead of K+1 the conductive structure of the second end electric property coupling of second lead of K conductive structure, N and K are all natural number, and 1≤K＜N.When the viewing area of contact panel received an external force, above-mentioned conductor just was able to electric property coupling one reference potential corresponding to this external force indication position part.Touch signal read lines then in order to distinguish two end points of the above-mentioned conductor of electric property coupling as for above-mentioned two.The method includes the following step: at first, judged whether that (as indicating shown in the S1502) takes place in the touching behavior; Then, when the touching behavior took place, the resistance of the resulting equivalent resistance of a wherein end of the above-mentioned conductor of foundation was calculated the coordinate of touch position (as indicating shown in the S1504).

What deserves to be mentioned is that can be known by above-mentioned each embodiment, touch sensing device proposed by the invention also is the touch sensing device of passive type, and extremely be fit to be used in the in-building type Touch Screen.In addition, realize that the present invention also only must revise wiring (layout) mode of contact panel, need not increase extra processing procedure.

In sum, the present invention utilizes a conductor and the many leads that laterally arrange to constitute the touch sensing device that is suitable for sensing one dimension coordinate.Because the resistance of each lead is less than the resistance of each line segment of above-mentioned lead, so the resistance of each lead can be ignored.In case Touch Screen is judged when having the touching behavior to take place, and just can record the resistance of two equivalent resistances from two ends of above-mentioned conductor respectively, and because two measured resistances can be used to represent different line segment numbers, so can calculate a dimension coordinate of touch position according to this.And if adopt two groups of above-mentioned touch sensing devices, as long as judge the touch position of reality again, just can obtain the two-dimensional coordinate of touch position.

Similarly, the present invention also utilizes a plurality of conductive structures that laterally arrange to form a conductor, but and forms the touch sensing device of another kind sensing two-dimensional coordinate according to this.Because touch position is far away more from the end points of above-mentioned conductor, the resistance of measured equivalent resistance is just big more.Therefore, in case Touch Screen judge when having the touching behavior to take place, just can calculate the two-dimensional coordinate of touch position according to the resistance of the measured equivalent resistance of a wherein end of above-mentioned conductor.

Can know that through above explanation the present invention utilizes above-mentioned conductor to obtain the coordinate figure of touch position, and the end points that the touching signal processing circuit only need couple above-mentioned conductor can be operated.Therefore; Adopt the Touch Screen of touch sensing device of the present invention need not use the touching signal processing circuit of high channel number; Just can enjoy high sensing resolution, and the peripheral wiring of the contact panel of Touch Screen is also less, thereby needn't increases the border width of contact panel.In addition; Owing to can record the resistance of two equivalent resistances respectively from two ends of same conductor; To represent different line segment numbers; Or calculate the distance of touch position and conductor two ends according to the resistance of these two equivalent resistances, so for traditional passive type touch sensing device, but touch sensing device of the present invention has the ability of sensing multi-point touch.And for traditional active place's control sensing structure, touch sensing device of the present invention is not owing to adopt any transistor to constitute sensing cell, thus can not reduce aperture ratio of pixels, and the touch-control reaction time is also very fast.

Though the present invention discloses as above with preferred embodiment; Right its is not that any those skilled in the art is not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little change and retouching, so protection scope of the present invention is when being as the criterion with claim institute confining spectrum.

Claims (13)

1. the touch sensing device of a contact panel is characterized in that, described touch sensing device comprises:

One first conductor; And

Many first leads that laterally arrange; Said first conductor of a wherein end electric property coupling of each said these first lead; So that said first conductor is divided into a plurality of first line segments, and the resistance of each said these first lead is less than the resistance of each said these first line segment

Wherein, when a viewing area of said contact panel receives an external force, just be able to electric property coupling one reference potential corresponding to first lead of said external force indication position;

One second conductor; And

Many second leads that laterally arrange; Said second conductor of a wherein end electric property coupling of each said these second lead; So that said second conductor is divided into a plurality of second line segments, and the resistance of each said these second lead is less than the resistance of each said these second line segment

Wherein, when the said viewing area of said contact panel receives said external force, just be able to the said reference potential of electric property coupling corresponding to second lead of said external force indication position;

One the 3rd conductor, the other end of said these first leads of electric property coupling, and be parallel to said first conductor; And

One the 4th conductor, the other end of said these second leads of electric property coupling, and be parallel to said second conductor.

2. touch sensing device as claimed in claim 1 is characterized in that, said first conductor has a plurality of continuous bendings.

3. touch sensing device as claimed in claim 1; It is characterized in that; Said first conductor is made up of one first parts and one second parts; Said first parts are in order to first lead of electric property coupling part, and said second parts are in order to remaining first lead of electric property coupling, and said first parts separate with said second component entity.

4. touch sensing device as claimed in claim 1; It is characterized in that; Said second conductor is made up of one the 3rd parts and one the 4th parts; Said the 3rd parts are in order to second lead of electric property coupling part, and said the 4th parts are in order to remaining second lead of electric property coupling, and said the 3rd parts separate with said the 4th component entity.

5. touch sensing device as claimed in claim 1 is characterized in that, said second conductor has a plurality of continuous bendings.

6. touch sensing device as claimed in claim 1 is characterized in that, said first conductor and said second conductor the two to present cross staggered.

7. touch sensing device as claimed in claim 1 is characterized in that, described touch sensing device more comprises two touching signal read lines, in order to two end points of said first conductor of difference electric property coupling.

8. the touch sensing method of a contact panel is characterized in that, said contact panel adopts a touch sensing device, and said touch sensing device includes:

One first conductor and many first leads that laterally arrange; Wherein, Said first conductor of a wherein end electric property coupling of each said these first lead, so that said first conductor is divided into a plurality of first line segments, and the resistance of each said these first lead is less than the resistance of each said these first line segment; And when a viewing area of said contact panel receives an external force, just be able to electric property coupling one reference potential corresponding to first lead of said external force indication position;

One second conductor and many second leads that laterally arrange; Said second conductor of a wherein end electric property coupling of each said these second lead is to be divided into a plurality of second line segments with said second conductor; And the resistance of each said these second lead is less than the resistance of each said these second line segment; When the said viewing area of said contact panel receives said external force, just be able to the said reference potential of electric property coupling corresponding to second lead of said external force indication position;

One the 3rd conductor, the other end of said these first leads of electric property coupling, and be parallel to said first conductor; And

One the 4th conductor, the other end of said these second leads of electric property coupling, and be parallel to said second conductor;

Said method comprises:

Judged whether that the touching behavior takes place; And

When the touching behavior takes place, utilize the resistance of two measured equivalent resistances of two ends of said first conductor to calculate in pairing first lead of touch position, begin to the resistance of the line segment of said first conductor by touch position; And utilize from the resistance of two measured equivalent resistances of two ends of said second conductor and calculate pairing second lead of touch position, begin to the resistance of the line segment of said second conductor by touch position;

Decide the coordinate of touch position according to the resistance that calculates.

9. touch sensing method as claimed in claim 8; It is characterized in that; When the touch position of two reality; Comprise calculating by above-mentioned two touch position beginning that said first arithmetic expression and said second arithmetic expression are in regular turn shown in following formula (1) and formula (2) to two resistances of two line segments of said second conductor according to one first arithmetic expression and one second arithmetic expression:

$R_{X1}=A{R}_s+\frac{R_{n1}\×(B{R}_s+R_{n2})}{R_{n1}+(B{R}_s+R_{n2})}---\left(1\right)$

$R_{X2}=C{R}_s+\frac{R_{n2}\×(B{R}_s+R_{n1})}{R_{n2}+(B{R}_s+R_{n1})}---\left(2\right)$

In above-mentioned two formulas, R _X1Be expressed as from the resistance of the measured equivalent resistance of one first end of said second conductor, R _X2Be expressed as from the resistance of the measured equivalent resistance of one second end of said second conductor, R _sBe expressed as the resistance of each line segment in said second conductor, R _N1One first touch position that is expressed as from above-mentioned two touch position begins to the resistance of the line segment of said second conductor, R _N2One second touch position that is expressed as from above-mentioned two touch position begins to the resistance of the line segment of said second conductor, and A, B and C are all natural number.

10. touch sensing method as claimed in claim 9; It is characterized in that; Described touch sensing method comprises more calculating by above-mentioned two touch position according to one the 3rd arithmetic expression and one the 4th arithmetic expression and begins to two resistances of two line segments of said first conductor that said the 3rd arithmetic expression and said the 4th arithmetic expression are in regular turn shown in following formula (3) and formula (4):

$R_{Y1}=D{R}_s+\frac{R_{m1}\×(E{R}_s+R_{m2})}{R_{m1}+({\mathrm{ER}}_s+R_{m2})}---\left(3\right)$

$R_{Y2}=F{R}_s+\frac{R_{m2}\×(E{R}_s+R_{m1})}{R_{m2}+({\mathrm{ER}}_s+R_{m1})}---\left(4\right)$

In above-mentioned two formulas, R _Y1Be expressed as from the resistance of the measured equivalent resistance of one first end of said first conductor, R _Y2Be expressed as from the resistance of the measured equivalent resistance of one second end of said first conductor, R _sBe expressed as the resistance of each line segment in said first conductor, R _M1Be expressed as from said first touch position and begin to the resistance of the line segment of said first conductor, R _M2Be expressed as from said second touch position and begin to the resistance of the line segment of said first conductor, D, E and F are all natural number.

11. touch sensing method as claimed in claim 8; It is characterized in that; When the touching behavior takes place; The touch position that at first is detected of record is at the coordinate figure of one first dimension direction with one second dimension direction, and according to the coordinate figure that is write down come from subsequent detection to possible touch position judge the touch position of reality.

12. touch sensing method as claimed in claim 11; It is characterized in that; Be according to the coordinate figure that write down come from subsequent detection to possible touch position; Remove possess with the record touch position said first the dimension direction the identical person of coordinate figure, and remove possess with the record touch position said second the dimension direction the identical person of coordinate figure, with remaining possible touch position is regarded as reality touch position.

13. touch sensing method as claimed in claim 12; It is characterized in that; When pushing thing the situation of take place sliding arranged; Comprise that more each the practical touch position that utilizes a very first time to obtain from detected possible touch position of one second time, finds out nearest person separately, the touch position of finding out being regarded as the practical touch position that said second time obtained, and then obtain a coordinate group; So that utilize said coordinate group to demonstrate the above-mentioned sliding trace of pushing thing, the wherein said very first time is prior to said second time.

Images