TW201120711A - Calculation method of touch position - Google Patents

Abstract

A calculation method of a touch position applied in a touch panel is provided. A plurality of sensing traces of the touch panel are continuously scanned and a base value of each of the sensing traces not touched is calculated. At the first touch, a single point touch position is calculated and the scanning is remaining for determining whether a single point touch mode or a multi-point touch mode is. In the multi-point touch mode, the sensing traces corresponding to the touched positions are determined. The signals of the sensing traces near the above sensing traces corresponding to the touched positions are used to calculate the touch positions of the multi-point touch mode.

Description

201120711 wry〇uj-C400-0910 31627twf.doc/n VI. Description of the Invention: [Technical Field] The present invention relates to a method for calculating a touch position, and relates to a method for calculating a multi-touch position ,. In particular, [prior art] At present, the touch panel can be roughly divided into a resistive type, a sound wave type, and an electromagnetic type control panel, wherein ===, the multi-touch characteristic can provide a more humanized fall. = Control = board and capacity, the panel is gradually favored by the market. Therefore, the touch: develops toward the accuracy of the multi-touch in the south. Continuation [Invention] The method can accurately calculate the touch position of the multi-touch. The present invention proposes a control panel for a touch position. The touch panel has a sequential arrangement = a touch and a plurality of second sensing axes arranged in sequence. The first sensing axis Xi and the second sensing axis are two: number. A first direction of the second sensing axis Yj is continuously scanned. The sensing-axis method includes the following steps: Calculating the axis Yj with a first reference value NTxi_ and calculating the second reference value NTyj(t). Column 201120711 w r y〇\j i -^,400-0910 31627twf.doc/n Whether the touch panel is touched. After being touched for the first time, judge - single point mode or one multi-touch mode. When it is judged to be in the single-touch mode, the calculation of the single-touch position is entered. When it is determined that the multi-touch mode is used, then = at least one of the first sensing axis Xi and at least one of the second two axes Yj are used to define a first touch position and two second positions, and calculate The first touch position and the second touch position. According to the above, the present invention calculates a signal line when each sensing axis is not touched as a reference value for the touch position positioning calculation. In this way, η improves the positioning accuracy of the touch position. In addition, the present invention can benefit the signal of the adjacent sensing axis to perform the positioning calculation of the multi-touch position. In order to make the present invention and the gamma energy more precise, the following embodiments are described in detail with reference to the accompanying drawings. [Embodiment] FIG. 1 is a schematic diagram of a touch panel, and FIG. 1 is a flow chart of the actual-contact calculation of the present invention. The panel (10) has a plurality of first sensing lines Χι arranged in sequence, and a plurality of second sensing axes Yj arranged in order, and an integer in the beans. In the present embodiment, the description is made with five first-sensing bets; and five second sensing axes Y1 to Y5, that is, i and j are any integers of 1-5. Further, the first sensing axis defines a parallel second sense m and a second direction m of the parallel first sense axis Xi. When the user touches or touches the 201120711 wry»ul-C400-0910 31627twf.doc/n control panel 100 with a potential object, such as a finger, the first position corresponding to the touched panel 100 is touched. The capacitance values in the sensing axis Xi and the second sensing axis Yj are varied. Generally, when the capacitance values sensed by the first sensing axis Xi and the second sensing axis edge are respectively greater than a first threshold value preset by the touch panel 1 以及 and a second threshold value, It is considered as the occurrence of touch action. The touch panel 100 can perform the positioning of the touch position according to the change of the capacitance value to enable the electronic device to correctly execute the instruction that the user wants to convey. In detail, please refer to FIG. 1A and FIG. 1 simultaneously, the calculation method of the touch position of the touch panel 100 includes the following steps. First, step 10 is performed to continuously scan the first sensing axis Xi and the second sensing axis Yj and record a first capacitive signal (: ΧΚ〇 and each second sense) of each first sensing axis Xi at each scan. The measurement axis Yj is a capacitance signal CYj(1) of each of the people, and t is the number of scans. In addition, in the state of no touch, the first capacitance signal of each first sensing axis xi is And calculating a second capacitance signal (3γΚ〇 of each of the second sensing axes Yj to obtain a first reference value NTxi(1) and a first reference value NTyj(t), respectively. It is worth mentioning that no matter the touch action When it occurs, the calculation of the first reference value NTxi(t) and the second reference value NTyj(t) is continuously performed as long as the touch panel 1 is not touched. In this embodiment, the first reference value NTxi(1) is an average value, a maximum value or a minimum value of the first capacitive signals Cxi(1) to Cxi(M) when the first sensing axis Xi is scanned from the first scanning to the t-th scan. The second reference value NTyj(1) may be from the second scan to the t-1 for each second sensing axis Yj The average value of the second capacitance signal CYj(1)~CYj(4) during scanning is 201120711 wr^oui-v.400-0910 31627twf.doc/n value, a maximum value or a minimum value. However, the touch panel 100 is in different external environments. The first capacitive signal CXi(t) of each of the first sensing axes Xi and the second capacitive signal CYj(t) of each of the second sensing axes Yj may have different values. For example, different temperatures and humidity will be Affecting the magnitude of the first capacitive signal cxi(t) and the second capacitive signal CYj(1). In particular, if the environment changes drastically in a short period of time, the first capacitive signal cxi(t) and the second capacitive signal CYj(1) will be caused. The first reference value NTxi(1) and the second reference value NTyj(t) may not be truly represented by directly floating the first capacitive signal cxiw and the second capacitive signal CYj(1). The average state of the external environment. Therefore, 'to compensate for the impact of the environment on the capacitance signal in a short period of time' the first reference value NTxi (1) and the second reference value > ^ ^ (〇 can be in other ways For example, the first reference value NTxi(1) is, for example, NTxi(t) ~(1 -α)XNTxi(t-2) +axCxi{t~i) (Equation 7), where NTxi(1) is Cxi(1) And α is 0 〇 5. The second reference value NT 』 (1) is also clear w = (1-«) x qing (Bu (Equation 8), which; NTyj (l) is CYj (1) and a is for example 〇. 〇 5. Of course. , a can be changed with different δ and 6 products, here only 0.05 as an example. In fact, α is between 04, and the smaller α is, the smaller the influence of the electric valley generated when the sudden change of the environment is on the first reference value NTxi(1) and the second reference value NTyj(t), so that the first reference is made. The value NTxi(1) and the second reference value NTyj(t) more realistically reflect the average state of the environment. 1-C400-0910 31627twf.doc/n 201120711

Τ» A W Then proceed to step 20 to determine if a touch action has occurred. The details of the ancient ^ touch action occurs in the following way: the first - capacitance signal % ^ in the first - Η槛 value, and the second capacitance CYj (t) is greater than the second homing value, the corresponding - The first-sensing (10) Xi and the corresponding one of the second sensing axes Yj are regarded as being touched. It is worth mentioning that, the first, and the threshold value of the first panel is difficult to set the panel 1 () (), the wiring design and circuit planning will make the first threshold and the second when the touch action is not When the 'touch panel' just happened: If the touch action occurs for the first time, proceed to step 3〇. Step 3 = Record to judge - single touch mode or - multi-touch mode. Right _ is the morning control mode riding step · For the multi-touch mode, go to step 5 〇. Right Judgment After the second scan, it is found that in the Uth scan, only the i-th brother-sensing axis Xl and the jth second sensing axis are cut off early. In addition, in the first drawing after the t1st reading, the first sensing axis and the second sensing axis are in the middle, and the bar is touched to determine the multi-touch mode. After determining that the single-touch mode is performed, step 4 is performed, and the calculation of the touch position is performed. The first touch position of the single touch position is from the first scan to the U: the second sweep, and the reference value chest (6) is used to calculate the first direction 〇1 on the brother: the touch position The coordinate 第 in the first direction D1: In addition, 'early 201120711 wr?〇ul-vJ4〇〇-〇91〇31627twf.doc/n [Z.(C male)-most i(6)) (gonggong) position X = j ^i_一伊^(Cxi(n)-NTxi(t\)) At the same time, the second reference value is calculated from the second reference value NTy at the time of the second scan by the second sensing axis Yj. In addition, the coordinate 丫 of the single-touch position in the second direction 1) 2 is: (Formula 2) ^KCYKtD-NTyjitl)) position Y = ___ ~~ i ^(Cy(zi) - NTyj(tl)) In this embodiment, the single-touch position is calculated by using the difference between the measured axis Xi and the Yj (four) capacitive signal and the reference value of each axis before the touch. Therefore, the calculation of the single-touch position is not susceptible to the positioning error caused by the capacitive signal when the touch panel 100 is not touched. Specifically, if part of the sensing axis χί and Matsuji = Tiger are low, directly using the electric control when touched = 1 1 control position may cause the positioning result to be biased or deviated from this. Low sensing axes Xi and Yj. Therefore, the accuracy of 1 bit, when sensing the axes Xi and Yj are touched, first compare with the reference value (ie, subtract the reference value) and then perform '201120711 -r, ol-C4〇〇.〇 91〇31627twf.d〇c/n According to the above, at the t2th scanning, at least three of the first sensing axis % and the second sensing axis Yj are touched to determine the multi-touch mode, Go to step 5〇. The step 50 is, for example, determining which of the at least one first sensing axis Xi and the at least one second sensing axis Yj that are touched to define a first touch position and a second touch position. The method for determining the first sensing axis edge and the second sensing axis Yj for defining the touch position and the second touch position is, for example, comparing the sensing axis touched by the t-th scanning after the t-th scan . 〃 Rain meter, suppose that in the t2nd scan, the first sensing axis Xi has been touched when the first scanning is used to define the time when the drawing has been touched. Used to define the second touch position. 4, set the other, to f outside the second t2 scan, the first - sense axis ^ right mouth = the first touch of the touch: use: the first position and the second touch position. Of course = two (meaning = sense _ line Yj h has - fine ^, when the object uses the touch position - sense the second touch position of the first - touch position stem, sense _ line YJ after 'go step 52 1 : The position of the younger brother is recorded in ^^ 201120711 rv i 7〇v 1' ^400-0910 31627twf.doc/n w+oy^i(Gci(n) - NTxi(tl)) position—X\ = ---( Formula 3) ^ (C*/(ii) - ^Γχί(ίΙ)) i=na where a is a positive integer. In fact, the value of 'a can be the touch panel in the touch panel loo by the lines Xi and Yj The wiring density is set. The higher the wiring density of the sensing axes Xi and Yj, the larger the value of a. The coordinate Y1 of the first touch position in the second direction is: m+a ^ i(CYj(ti) - NTyj{t\)) position—Υ\ = - (Formula 4) ^(CYjVD-NTyjXtl)) j=ma Here, m and η are the first sensing axes 定义ι and the second defining the first touch position. The order of the axis Yj is sensed. That is, m and η are the results judged in step 50. Assuming that the first touch position is defined by the first sensing axis χ3 and the second sensing, line Υ2, then m=3, η=2. Therefore, the first touch position, for example, is calculated by subtracting the capacitance signal from the first sensing axis Χ2 Χ4 and the second sensing axis γι γ3 with the corresponding reference value. In addition, the first touch position $ has been touched during the tl scan, so the first touch is set by the U-time previous capacitive signal as the reference value, ie NTxi(tl) and NTyj (tl). Then, step 54 is performed to calculate the second touch position. The second touch position 201120711 wr?〇ul-C400-0910 31627twf.doc/n is set to be touched when the t2th scan is performed. Therefore, the calculation of the second touch position is based on the t2nd previous capacitive signal. value. Therefore, in this case, the first reference value NTxi(t2) when the first sensing axis Xi is from the first scanning to the first scanning and the second sensing axis Yj are obtained from the third scanning to the t2. The second reference value NTyj(t2) at the time of -1 scanning. Specifically, the coordinate X2 of the second touch position in the first direction is . p+a 〉: i(Cxi(t2) — NTxi(t2)) φ P—_X2 = book-(formula 5) ^'( Cxi(t2) — NTxi(t2)) The coordinate Y2 of the touch position in the second direction is:

^ i(Crj(t2) - NTyj{t2)) position Y2 = ΐΞΒζΞ.___ — 9+α[(C--((2))) (Formula 6) Ρ and q are the second touch positions defined The order of the first sensing axis Yj. After sensing the axis Xi and the second, after performing the above calculation to obtain the touch position coordinates, the outputs of the blocks (ie, step 6G) can be read to execute the corresponding method. = However, the above coordinates can also be recalculated into resolution coordinates according to the resolution of the touch panel 1〇〇 and then rotated. Of course, if there is a third touch position generated during the subsequent t3nd underscan, then steps 50-52 are continued, and a third touch position is further calculated. Wherein, step 5: in addition to determining the first touch position and the second touch ^ 201120711 WFy8Ol-tJ400-0910 31627twf.doc/n

In addition to the sensed Korean line, the sensing axis corresponding to the third touch position is determined and the third touch position is calculated from the corresponding sensing axis. It is worth mentioning that when the sensing axis corresponding to the touch position is the sensing axis that has been touched, the corresponding sensing axis will sense the capacitance value higher than that of the previous touch state. Capacitance value. Therefore, when the third touch position is located at the sensing axis that has been touched, the sensing axis corresponding to the third touch position can be judged based on the change in the capacitance value. In this embodiment, the sensing axis of the touched sensing axis is used for calculation, so that a plurality of touch positions can be calculated to achieve the function of multi-touch. The following is an example of a method for calculating the multi-touch of the touch panel 1 . FIG. 2 is a view showing a case where the touch panel of FIG. 1 is touched. Referring to FIG. 1B and FIG. 2, the touch panel 100 is continuously turned on. Assume that at the fifth scan, position P1 is touched, 2. The judgment is "Yes". At this time, the first sensing axis=signal cX3(5) is greater than the first threshold value, and the second capacitive signal Cy2(5) on the second sensing axis γ2 is greater than the second threshold value. In addition, the touch panel (7)

Scanning and recording are further continued to determine a single touch mode or a multi-touch volume, which is the aforementioned step 30. Worker

Ik, that is, in the seventh scanning operation, in addition to the position, control, and position P2 is also touched. The first sensing capacity on the axis χ4, the number (: 7) will also be greater than the first threshold value, and the second capacitive signal on the second sensing axis (: state 4) will be greater than the second threshold value. In the past, there are four sensing axes that are touched, that is, the judgment in step 3: ^, control mode.句夕.,.占占12 201120711 wr you 1-C400-0910 31627twf.doc/n Next, proceed to step 50' to determine the touched first sensing axis X3, the first sensing axis X4, the second Which of the sensing axis Y2 and the second sensing axis Y3 is used to define the first touch position P1 and the second touch position P2. In the present embodiment, the first sensing axis X3 and the first sensing axis 34 are determined to be touch at the 5th scanning. Therefore, the first sensing axis X3 is used to define the first touch position pi, and the first sensing axis X4 is used to define the second touch position P2. Similarly, the first sensing axis Y2 is determined to be a touch at the 5th scan, so that the first touch position P1 is defined. The second sensing axis ¥3 is used to define the second touch position P2. In other words, the sensing axis that is first determined to be touched is used to deny the first touch position ρ, and then the sensing axis determined to be touch is used to define the second touch position p2. After determining the sensing axes of the touch positions P1 and P2, the touch positions P1 and p2 are calculated using the corresponding sensing axes, that is, step 52 and step 54 are performed. Here, the first touch position ρι is calculated using the first sensing axis X3 and the second sensing axis Y2. The second touch position P2 is calculated by using f-sensing axis, line Χ4, 乂 and second sensing line γ3: The calculation of the first touch position P1 and the second touch position P2 is calculated, for example, by using the sensing axes of the corresponding sensing axes Χ3, χ4, γ2, and γ3. That is to say, in the calculation method of the present embodiment, the a in the above formulas 4 to 6 are all exemplified by 丄. In detail, the first sensing axes χ2, χ3, and χ4 are first ^ First scan to the fourth scan recorded the first capacitor signal 13 201120711 WFy8Ol-U400-0910 31627twf.doc/n

Cx2 (U to Cx2 (4), CX3 (1) to CX3 (4), and cx4 (1) to Cx4 (4) are calculated as corresponding first reference values NTx2 (5), NTx3 (5), and NTx4 (5). Here, the reference value can be used for these. The average value and maximum value of the capacitance signal are calculated according to the above formula 7. Of course, the 'reference value can also be the value obtained by these capacitance signals according to other statistical methods. Then 'the first sensing axis X2, X3 and X4 substitutes the first capacitive signals CX2(5), Cx3(5), and Cx4(5) of the fifth scan with the first reference values NTx2(5), NTx3(5), and NTx4(5), respectively, and The following formula ^^•(CnXS)-book, (3)) position X\- ^-- 4 ^](Cxi(5)-iV7x/(5)) i=2 , and find the first touch position P1 The coordinate XI in the first direction D1. Similarly, the second sensing axis Yb Y2 and Y3 record the first capacitive signals Cyl(1)~Cyi(4), Cy2(1)~Cy2(4), and CyS(1)~Cy3(4) recorded from the first scan to the fourth scan. It is calculated as the corresponding second reference values NTyl(5), NTy2(5), and NTy3(5). Next, the second sensing axes Y1, Y2, and Y3 are the second capacitive signals cyl(7), Cy2(7), and Cy3(5) of the fifth scan and the second reference values NTyl(5), NTy2(5), and NTy3(5). Substituting into Equation 4, the following formula 3 J^KCrjX5)-NTyj(5)) position _Y\ = --- 乞(Cm, _NTyj(5)) 7=1, and the first touch 201120711 wr 7 is obtained. 〇υ 1-C400-0910 31627twf.doc/n Position Ρ1 is the coordinate Υ1 in the second direction D2. Then, the second touch position P2 is calculated, that is, step 54. The first sensing axes X3, X4, and X5 are calculated from the first to sixth scans of the first capacitive signals Cx3(1) to Cx3(6), Cx4(1) to Cx4(6), and Cx5(1) to Cx5(6). The first reference values are NTx3(7), NTx4(7), and NTx5(7). And, the first sensing axes χ3, Χ4, and X5 are at the 7th scan of the first capacitive signals CX3(7), Cx4(7), and Cx5(7) and the first reference values NTx3(7), NTx4 ( 7) and NTx5(7) are substituted into formula 5, and the following formula 5 (7)-new, (7)) position_X2 ~ ----- NTxi(JJ) is obtained, and the second touch position P2 is obtained in the first direction. Coordinate X2 on D1. Similarly, the first sensing axes Y2, Y3, and Y4 record the first capacitive signals Cy2(1)~Cy2(6), Cy3(l)~Cy3(6), and (1)~Cy4(6) recorded from the first scan to the sixth scan. It is calculated as corresponding second reference values NTy2(7), NTy3(7), and NTy4(7). The second sensing axes Y2, Y3, and Y4 are substituted into the sixth capacitive signal cy2(7), Cy3(7), and CV(7) at the 7th scan and the second reference values NTy2(7), NTy3(7), and NTy4(7). The following formula 4 ^iiCYm-NTyjil)) position Y2 = horse ----- 4 ^(CmD-NTyjXl)) j=2 to obtain the second touch 15 201120711 w^y»u 1-^00-0910 31627twf.d〇c/n The coordinate γ2 of position P2 in the second direction £)2. Then, the coordinates of the first touch position P1 (X Bu Y1) and the coordinates of the second touch position P2 (χ2, Υ2) are rotated or the coordinates of the first touch position η (XI ' Υ 1) and the first The resolution of the coordinates (χ2, touch panel U) 0 of the two touch positions ρ2 is converted into a corresponding one (Xb second resolution coordinate (Χ2, Υ2,)) and output, for example, touch If the resolution of the panel 100 is set to =0x500 ', the first touch position ρι is in the first direction m.

= is called X1 'the resolution coordinate in the second direction D2 Υ 1 = (500/5) χΥ Similarly, the resolution of the second touch position p2 in the first direction D1 coordinates χ 2, = (5 〇〇 / 5 ) χχ 2, the resolution coordinate Y2 in the second direction, = (5 〇〇 / 5) xY2. In other embodiments, the resolution of the touch panel (10) can vary from design to design. y In general, the present embodiment utilizes the touched sensing axis and its front and rear sensing axes to position the touch position. Therefore, the touch panel (10) can efficiently calculate a plurality of touch points to improve the usability of the touch panel 100.

As described above, the calculation method of the touch position of the present invention will be compared with the capacitive signal when the touch signal is not touched, and the touch position can be correctly obtained. In addition, the present invention can calculate a touch position by using a plurality of touch scales to complete a plurality of touch points = t, and make the touch surface (four) more complex. In the case of further steps, this & month can use different methods to obtain the reference value of the capacitive signal when the touch is not touched. Therefore, the fluctuation of the capacitance value caused by the change of the ring 1 can be compensated and is further improved. 16 201120711 wry〇ul- C400-0910 31627twf.d〇c/n Positioning accuracy of high touch position. The present invention has been disclosed in the above embodiments, but it is not intended to limit the invention to those skilled in the art, and it is possible to make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a schematic diagram of a touch panel. FIG. 1B is a flow chart of a method for calculating a touch position according to an embodiment of the present invention. FIG. 2 is a continuation of the case where the touch panel of FIG. 1A is touched. [Main component symbol description] 10, 20, 30, 40, 50, 52, 54, 60: Step 1: Touch panel D1: First direction • D2: Second direction P1: First touch position P2: Second touch position Xi, XI~X5: first sensing axis Yj, Y1 YY5: second sensing axis 17

Claims (1)

201120711 w^Wi-^400-〇91〇31627twf.doc/n 7. Patent application scope: 1. A calculation method of touch position, applied to a touch panel, the touch panel has multiple pieces arranged in order a first sensing axis Xi and a plurality of second sensing axes Yj arranged in sequence, wherein i and j are positive integers, and the first sensing axes Xi are intersected with the second sensing axes YJ to define a first direction parallel to the second sensing axes Yj and a second direction parallel to the first sensing axes Xi. The calculation method of the touch positions includes: ° continuously scanning the first senses Measuring axis Xi and the second sensing axis ruins Yj and recording a first electric valley signal CxiW and each of the second sensing axes Yj of each of the first sensing axes Xi at each scanning a second capacitive signal CYjW during scanning, where t is the number of scans; when not touched, the first capacitive signals cXiWa and the second sensing axes Yj of each of the first sensing axes Xi are calculated. The second capacitance signals CYj(1) respectively obtain a first reference value NTxi(1) and a first The reference value NTyj(t); determining whether the touch panel is touched, wherein the first capacitive signal CxiW is greater than a first threshold value, and the second capacitive signal cYj(t) is greater than a second threshold value Corresponding one of the first sensing axis X i and one of the corresponding second sensing axes Yj are regarded as being touched; after being touched for the first time, scanning and recording are continued to determine a single point Touch mode or a multi-touch mode; determining that the single touch is determined only when one of the brothers one sensing axis Xi and one of the first sensing axes Yj are touched during 苐tl scanning Control mode 18 201120711 »» X 1-C400-0910 31627twf.doc / n type 'and according to the first sense - line Xi and the second sense ^. The capacitance signal and the benchmark (four) bad money line - single control Location = calculation; and After the t2th scan, a total of at least three first sensing axis along the second sensing axis Yj are touched, and then the multi-touch mode is determined. According to the first sensing axis Xi, the The second sensing axis Yj and the difference between the lower sensing signal axis Xi and the second axis sensing signal Yj and the reference value of the second sensing gift Yj perform a multi-touch position calculation. 2. The touch position=calculation method according to claim 1, wherein the calculation method of the single touch position comprises: °# obtaining each of the first sensing axes Xi from the ith scan to the ti_i The first reference value NTxi(tl) at the time of the second scan, and the coordinate X in the single point direction is: ^ ^/(Gc/(ii)-iV7jcz(il)) position^ = Αή-( formula Y^{Cxm)-NTxi{t\)) /=1; and ^ obtain the second reference value NTyj(6) when the second sensing axis Yj is from the first scan to the tMth insertion, and the The coordinate Y of the single touch position in the = direction - direction is: ^ i{CYj{t\) - NTyjitl)) position ^γ = - (Formula 2) 7=1 Ά -kbi 19 201120711 w^»ui- C400-〇91〇31627twf.doc/n 3. The calculation method of the touch position as described in claim 2, wherein the calculation method of the multi-touch position comprises: determining at least one of the touched Which one of the sensing axis Xi and the at least one second sensing axis Yj is used to define a first touch position and a second touch position, and calculate the first touch position and the second touch position The method for calculating the first touch position includes: the coordinate XI of the first touch position in the first direction is: «+〇position_X\ - ^KCxm- NTxi(tl)) n+a ^(〇 Χί(η)-ΝΤχι(ύ)) (Equation 3) 'where a is a positive integer; and the coordinate Y1 of the first touch position in the second direction is: m+a 5] 状-师(6)) position _Y\ =丄__ — m+a J]( CmD-NTyj(tl)) jma (Formula 4) 'where m and n are the order of the first sensing axis along which the first touch position is defined and the second sensing axis Yj; The method for controlling the position includes: obtaining the first reference value NTxi(t2) when each of the first sensing axes Xi is scanned from the first scan to the t2-l time, and the second touch position is at the The coordinate X2 in one direction is: P + Q i(Cxi(t2) — Λ^7χ/(/2)) position—= __ — ρ+α (Cr/(/2) — Λ^7χ/(ί2)) ΐ~ρ~α (Formula 5) 20 201120711 wry6ui-C400-0910 31627twf.doc/n; and obtaining the second reference value NTyj(t2) when each of the second sensing axes Yj is scanned from the first scan to the t2-th scan, and the The coordinate Y2 of the second touch position in the second direction is: q+a (formula 6), where P ^i{CYm)-NTym)) position Y2 — _ ~~ g+a ^(CYjVD-NTyjXtl)) And q is an order in which the second sensing axis xi and the second sensing axis Yj of the second touch position are defined. 4. The calculation of the touch position according to claim 3, wherein the first reference value NTxi(1) is the number of the first sensing axes % from the first scan to the t-1 scan The first capacitance signal ^χκυ~〇0 (called an average value, a maximum value or a minimum value. 5. The calculation of the touch position as described in the third application of the patent scope: .r:w which is the first A reference value NTxi (t factory for service = (1 ~ α) 一 1 2) + axCW i) (Equation 7), NTxi (1) is Cxi (1) and a is between 〇 and 1. 6. The method for calculating the touch position as described in item 5 of the scope of the patent application, wherein a is 〇.〇5. ° The calculation of the touch position as described in item 3 of the patent application scope, 'the second second reference value NTyj(1) is the time when the second sensing axis 'scans from the first person to the tith scan The second capacitance signal Cyki} - the average value, a maximum value or a minimum value. 201120711 wr^eui-^400-0910 31627twf.doc/n 8. The calculation method of the touch position as described in claim 3, wherein the second reference value NTyKt) is ^Tyj{t) = (1) -α) XNTyj(t - 2) -1 + ax Cyj{t -1) (Equation 8), NTyj(l) is CYj(1) and α is between 〇1. 9. For the calculation method of the touch position as described in the patent scope, 8th, where α is 0.05. 10. The method for calculating a touch position as described in claim 3, wherein in the multi-touch mode, when two of the first sensing axes xi are touched, then When the ti scan is performed, one of the touches is used to define the first touch position, and the other is used to define the second touch position. 11. The method for calculating a touch position according to claim 3, wherein in the multi-touch mode, when two of the second sensing axes are touched, the first time is tl One of the touches is used to distinguish the first touch position and the other is used to define the second touch position. 12. The method according to claim 3, wherein in the multi-touch mode, when only one of the first sensing axes & touches is touched, The first sensing axis of the touch is used to define the first touch position and the second touch position at the coordinates of the first touch. Clause 13. The calculation method of the touch position as described in claim 3, wherein in the multi-touch mode towel, when only one of the second sensing axes is touched, The second sensing axis J of the touch is: the first touch position and the second touch position are in the second direction: 22 201120711 J1-C400-0910 31627twf.doc/n 14. The method for calculating the touch position according to the third item further includes: the coordinates (XI, Y1) of the first touch position P1 and the coordinates (X2, Y2) of the second touch position P2 according to the touch panel. One resolution is converted into a corresponding first resolution coordinate (ΧΓ, ΥΓ) and a second resolution coordinate (X2', Y2') and output. twenty three