TW201112065A - Touch panel and a method of locating a touch point of the same - Google Patents

Abstract

The present invention is directed to a touch panel and a method of locating a touch point. An insulating layer is disposed between a first insulating substrate and a second insulating substrate. A first conductive film with anisotropic impedance is disposed between the first insulating substrate and the insulating layer, and a second conductive film with anisotropic impedance is disposed between the insulating layer and the second insulating substrate. Multiple first pads are configured along a first direction for the first conductive film, and multiple second pads are configured along a second direction for the second conductive film. The first conductive film has least impedance along the second direction, and the second conductive film has least impedance along the first direction.

Description

201112065 VI. Description of the Invention: [Technical Field] The present invention relates to a touch panel, and more particularly to a touch panel having an electrical impedance anisotropic conductive film and a method for positioning the touch point thereof. [Prior Art] Touch Panels (TouchPanel) or Touch Screens (T〇uchScreen) are increasingly used in electronic devices, especially portable or handheld electronic devices, such as Personal Digital Assistant (PDA). ) or mobile phone. The touch panel is an application technology that combines resistive, capacitive or optical touch technology with a display panel. Due to the mature development of liquid crystal display (1) (4) Crystal Display 'LCD) panel technology in recent years, the application of touch technology to liquid crystal display panels and the development of liquid crystal panel inspection has become a trend. The conventional capacitive touch panel mainly comprises two pattern layers of transparent material, which are formed on the upper and lower surfaces of the glass, and the two-dimensional coordinates are determined by the spring layers of the two patterns. The transparent conductive material used in the conventional touch panel is generally Indium Tin Oxide (Indium Tin Oxide), and the manufacturing of the touch panel mainly uses semiconductor manufacturing technologies such as lithography, exposure, and side technologies. Since the process must be complicated in many steps, the touch panel yield cannot be improved, and it cannot be reduced. Moreover, due to the limitation of riding, the touch accuracy of the traditional touch panel cannot break through the bottleneck. In view of the above, there is an urgent need to propose a mine-control panel structure and its positioning method to improve the shortcomings of the above conventional touch panel. 201112065 [Summary of the Invention] In view of the above-mentioned conventional towel panel of the conventional towel, the object of the embodiment of the present invention is to propose a method for controlling the anisotropy of the electrical impedance resistance = its touch point positioning method Create yield, reduce costs and increase resolution. According to the invention - the touch panel hides an insulating substrate, a first conductive film, an insulating layer, a second conductive film, and a second insulating substrate from bottom to top. The 'first-conductive film and the second conductive film have an electrical impedance anisotropy, and are, for example, a carbon nanotube (C-nNanGTube, CNT) film. The plurality of first electrical signals are disposed in a first direction of the first conductive contact, for example, and the plurality of second electrical contact pads are disposed in a second direction of the periphery of the second conductive film, such as a gamma axis. Wherein, the electrical resistance of the first conductive film in the second direction is smaller than the electrical impedance of the other direction, and the electrical impedance of the second conductive 2 in the first direction is smaller than the electrical impedance of the other direction. In addition, the touch panel according to the embodiment of the present invention further includes a driving circuit for inputting a human electrical signal to the first or the first signal contact pad and the sensing circuit to read the electrical signal sensed by the second or the first electrical contact. . When positioning the touch point, Wei, input the electrical signal to the first or second electric contact pad 1 and read the electrical signal sensed by the second or the first electrical contact. : According to the electrical signal received by the item, determine the touch surface on the touch surface of the touch panel and touch it on the touch panel, thereby reducing the cost and simplifying the process in the process, and uploading the position to improve the positioning. The accuracy. [Embodiment] Fig. 1 is a structural exploded view of the panel 1 of the present invention. In the present embodiment, the first insulating substrate u, the first conductive film 12, the insulating film 201112065, the second conductive film 14, and the second insulating substrate 玷 are formed. In the present specification, "upper" and "lower" refer only to the relative orientation. In the present embodiment, "on" refers to the direction of the touch surface of the touch panel, and "down" refers to the faraway touch. The second conductive film 14 is closer to the touch surface of the touch panel than the first conductive film 12. The first insulating substrate 11 of the embodiment is used as the lower substrate, and the second insulating substrate 15 is used as the upper surface. The substrate, the insulating layer 13 is m between the first insulating substrate u and the second insulating substrate 15. Further, the first conductive film 12 is disposed between the first insulating substrate and the insulating layer 13, and the second conductive film 14 is disposed between the insulating layer 13 and the second insulating substrate 15. However, depending on various functional requirements, additional layers may be interposed between the above layers. On the periphery of the first conductive film 12, along the first direction For example, the brake is disposed in the direction or the horizontal axis direction, and a plurality of first electrical contact pads 12 are disposed. On the periphery of the second conductive film 14, a plurality of the second conductive film 14 are disposed in the second direction, for example, the γ-axis direction or the vertical axis direction. The second signal is lightly connected to the 14th. The first direction of the actual _ towel is selective. The ground is perpendicular to the direction 'but in other secrets, the first direction is not limited to be perpendicular to the second direction. The material of the first insulating substrate 11 or the second insulating substrate 15 may be selectively one of the lower-column materials or a portion thereof Combination: Poly-Ethylene-Terephthalate (PET), Polycarbonate (P〇ly Carb〇n, PC) t ▼ propyl amide m day (p〇iy_Methyi_Meth-Acrylate, PMMA) , Poly-Imide 'PI, polyethylene (p〇ly_Ethylene, pE). The material of the insulating layer 13 can be, but is not limited to, glass or polymer material ^ first - electrical signal contact 塾 120, The material of the second electrical contact 塾14〇 may be a conductor such as a metal. The first conductive film 12 and the second conductive film 14 are generally conductive films having electrical anisotropy, such as a carbon nanotube or a so-called carbon nanotube. Carbon nanotube tube (Carb〇nNan〇Tube, cnt) film or CNT film processed by side or f-ray. In the case of (4) film processed by laser cutting 201112065, there will be a plurality of Wei cut riding on the CNT film. The lion treatment does not affect the electrical impedance anisotropy originally possessed by the CNT film. In this embodiment, the first The conductive film U and the second conductive film 14 are made of a cnt film which has not been subjected to _ or laser cutting treatment, and the manufacturing process is based on a substrate of a stone wafer or other material. Phase deposition (Chemical Vap〇rDep〇siti〇n, C deletion

Method; then, the squeezing technique is formed by pulling out the carbon nanotubes of the roots. These carbon nanotubes are connected to the front and rear ends by the force of VanDerWaals to form a conductive elongated structure having a directionality and parallel arrangement. The formed carbon nanotube film will have the smallest residual resistance in the direction of the recording, and (4) has the largest electrical impedance in the direction of stretching, and thus has an electrical impedance anisotropy. • FIG. 1C shows a capacitor formed at the touch point of the touch panel i, wherein a first capacitor C1 is formed between the first conductive film 12 and the first conductive film 14, and the second conductive film 14 and the stylus or finger are formed. A second capacitance Q is formed between 16. When the finger 16 touches a different position, the formed second capacitance threshold and the first capacitance α value will be different. Therefore, the lion of the touch panel 1 is a capacitive touch panel. 2A shows a touch point positioning system of a touch panel according to a first embodiment of the present invention, in which the electric resistance of the first conductive film u in the second direction, for example, the γ-axis direction or the vertical axis direction, is in other directions. The electrical impedance is minimum n the electric film along the first direction, and the electrical impedance in the direction of the x-axis or the horizontal axis is the smallest relative to the electrical impedance in the other direction. Each of the first-telephone contact pads 12G is respectively connected by wires to a telecommunication input circuit or a driving circuit 17 for inputting the same pulse waveform or other waveform electrical signals to each of the first telecommunication contacts one by one or simultaneously. (4) Hey. Each of the second electrical relays is connected to a telecommunications circuit or a sensing circuit 18' for reading the inductive electrical signals of the respective second electrical contact pads (10). In other words, the first-telephone contact 塾120 is used as a drive

201112065 The dynamic signal contact pad, the second electrical contact pad 140 acts as a sensing electrical contact. The drive circuit 17 and the sense circuit 18 are controlled by a controller 19. Fig. 2B shows a merged schematic of the first conductive film 12 and the second conductive film 14 in Fig. 2A. In the schematic diagrams of Figures 2A and 2B, ten first electrical contact pads 120' are shown, numbered 3, 8, 13, 18, 23, 28, 33, 38, 43 and you, and ten The three second electrical contact pads 14 are numbered 3, 8, 13, 18, 23, 28, 33, 38, 43, 48, 53, 58, and 63, respectively. The first capacitor C1 value and the second capacitor generated when the stylus or the finger 16 touches the touch panel 1 by the touch point positioning system 2A of the touch panel shown in FIG. 2A and FIG. 2B The value of C2 will cause the sensing signals of all the second electrical contact pads 140 to have specific characteristics. Thus, the position coordinates of the touch points on the touch surface of the touch panel 1 such as the X-axis or the horizontal axis can be determined. The coordinates of the coordinates and the γ axis or the vertical axis. 3A shows a touch point positioning system 2 of a touch panel according to a second embodiment of the present invention. Similarly to FIG. 2A, the electrical impedance of the first conductive film 12 in the second direction, for example, the γ-axis direction or the vertical axis direction is relative to The electrical impedance in the other direction is the smallest; the electrical impedance of the second conductive film 14 in the first direction, for example, the x-axis direction or the horizontal axis direction, is the smallest relative to the other 10 directions. Different from FIG. 2A, each of the second electrical signal contacts 140 is electrically connected to a signal input circuit or a drive circuit 17 respectively, and the same pulse waveform or other waveforms are input to each other at the same time or simultaneously. The second electrical signal contacts the 塾140. Each of the first telecommunication contact pads 12 is electrically connected to a telecommunication reading circuit or sensing circuit 18 for reading or sensing the inductive electrical signals of the respective first telecommunication contacts 120. In other words, the second electrical contact pad 14 is used as the driving electrical signal contact, and the first electrical contact 塾 (10) is used as the sensing electrical signal. The drive circuit 17 and the sense circuit 18 are controlled by a controller 19. 201112065 FIG. 2 shows a combination of the first conductive film 12 and the second conductive film (4) in FIG. 3A or the schematic diagram of FIG. 3B, showing ten number of t-contact pads U of 3, 8, 13, 18, 23 respectively. , 28, 33, 38, 43 and 48, and showed no more than 13 second telecommunication contacts 蛰14〇,

When the touch panel positioning system 2B, # stylus or finger Μ touches the Z control panel 1, the occupational H-capacity C1 value and the second capacitance C2 value will cause all the first-wei number After receiving the 12G, the electric saki has a specific feature', and thus the position coordinates of the touch point on the touch surface of the touch panel 1 such as the coordinates of the X-axis or the horizontal axis and the coordinates of the Y-axis or the vertical axis can be determined. 4A shows a method of locating a touch point of a touch panel according to an embodiment of the invention. First, in step 31, the same pulse waveform or other waveform electrical signals are input to the respective driving electrical signal contact pads from the driving circuit 17 one by one or simultaneously, which may be the first electrical signal contact 120 of the figure or the second of FIG. 3B. The telecommunication number is in contact with 塾14〇. Then, in step 32, the sensing of the sensing signal contact 透过 by the sensing circuit 18 can be the second electrical contact pad 14A of FIG. 2B or the first of FIG. 3B. The number of electrical signals is 120. Finally, in step 33, through the controller 19, the touch point two positions on the touch surface of the read-only telecommunications control panel i. "For the touch point positioning system 2A of the touch panel shown in FIG. 2B, the first conductive film 12 is used as the lower conductive film and the second conductive film is used as the upper conductive film, that is, the guide is driven under the guide In this case, the specific implementation of the collision point position determining step 33 includes steps 331 and 332 of FIG. 4A, wherein 'step 33 identifies all the electrical signals read. Among them, the amplitude of the waveform is the largest compared to the untouched change at the touch--the sense corresponding to the electrical subtraction 201112065. The position of the electrical signal contact 塾 position coordinate, for example, the second electrical contact pad 14 编号 of the number 13 The touch point is in the second direction or the coordinate of the γ axis or the vertical axis. Step 3 is the comparison step 3; 31A is read from the sensed contact contact pad found, for example, the second telecommunication number of the 13th number The signal of H4〇 is not touched and touched as shown in the waveform of Figure 2C. The drive signal corresponding to the maximum amplitude or amplitude change of the signal is contacted with the position coordinate of the money-electric signal contact 塾12〇. Touch the point in the first direction or the X or horizontal axis When the electrical signals received by the respective first electrical contact pads 12 are pulse waveforms, the sensing electrical signals read by the respective second electrical contact pads 140 have the same as if a touch point is generated. The waveform shown in FIG. 2C, wherein the respective waveform segments from left to right are the result of the pulse signals input through the ten first electrical contact pads 120 of numbers 3 to 48, respectively. The amplitude or amplitude of the induced electrical signal caused by the pulse signal input by the first electrical contact pad 12 of the second electrical contact 140 is the largest. Figure 2D shows that the touch panel has not been touched yet. At the touch point, corresponding to a pulse signal input by a specific driving electrical contact pad or the first electrical contact pad 120, the electrical signal read by a sensing electrical contact pad or the second electrical contact pad 140 An enlarged view of the waveform 20A. FIG. 2E shows a pulse signal input based on the specific driving electrical contact pad or the first electrical contact pad 120 when there is a touch point on the touch panel, corresponding to the touch point. An enlarged view of the electrical signal contact pad or second electrical contact pad 140, such as the waveform 21A of the electrical signal read by the second electrical contact pad numbered 13. The stylus or finger touches the touch. Obviously, when the stylus or finger touches the touch When the control panel generates a touch point as shown in FIG. 2B, as shown in FIG. 2E, the sensing signal contact pad or the second electrical contact pad 140 corresponding to the touch point number 13 is read. The waveform 21A of the electrical signal is collapsed compared to the waveform 20 of the electrical signal read by the same contact pad when not touched. Thus, the can 331A can touch the touch point in the second direction. Or the position coordinate of the Y-axis or the vertical axis. In addition, according to the step 3, the position coordinates of the touch point in the first direction or the x-axis or the horizontal axis can be touched.

In the touch point positioning system 2 of the touch panel shown in FIG. 3A, the first conductive film I2 serves as a lower conductive film and the second conductive film w serves as an upper conductive film, that is, the system drives the upper conductive surface and _ lower guide. In this case, the specific implementation of the step location block determination step 33 includes steps 331β and 332B of FIG. W, wherein the step 331B is to find the read_electric signal, and the waveform amplitude is the minimum value of the Lu minimum. The position of the driving electrical contact pad or the second electrical contact 塾 (10) is private, and the coordinates of the touch point in the second direction or the γ axis or the vertical axis are obtained. Step 332 is used to determine the first direction of the touch point position or the coordinate of the X-axis or the horizontal axis. When the electrical signals received by the respective driving electrical contact pads or the second electrical contact pads 14 are pulsed, the electrical contact pads or the first electrical contact pads 120 are generated at the touch-points. The waveform of the read electrical signal is as shown in FIG. 3C. The left and right waveform segments are respectively input through the pulse signals input by the twelve second electrical contact pads 14 of the number 3 to The result. In addition, the inductive electrical signal caused by the pulse signal input by the driving electrical contact pad or the second electrical contact pad 14 that is closest to the sensing telecommunication contact pad or the first telecommunication contact pad 120 The amplitude or amplitude of the waveform is maximum. FIG. 3D shows a pulse signal corresponding to a specific driving signal contact or a second electrical contact pad 140 when there is no touch point on the touch panel, and a sensing signal contact or first telecommunication. An enlarged view of the waveform 20B of the electrical signal read by the contact pad 120. FIG. 3E shows a pulse signal input corresponding to the specific driving electrical signal contact pad or the second electrical contact pad 14 when there is a touch point on the touch panel, and the sensing electrical signal contact corresponding to the touch point The pad or first electrical contact pad 12, for example, number 11 7 201112065 is an enlarged view of the waveform 21B of the electrical signal read by the first electrical contact pad of 13. Obviously, when the stylus or finger touches the touch panel to generate a touch point as shown in FIG. 3A, 'as shown in FIG. 3A', the number corresponding to the touch point is the first telecommunication contact. The waveform 21 of the electrical signal read by the pad 120 is significantly different from the waveform 20 of the electrical signal read by the same electrical contact pad 120. However, the change of the waveform 21Β at the touch here is less susceptible to the change of the untouched waveform 2〇β due to the RC delay, and thus cannot be used as the touch point position in the first direction or The judgment of the coordinates of the X-axis or the horizontal axis. However, as shown in FIG. 3C, 'see the read signal of each of the sensing telecommunication contact pads or the first telecommunication contact pad 120' via the driving telecommunication contact pad or the second telecommunication contact number 13 The amplitude of the waveform caused by the 140 input pulse signal is the smallest, so that the coordinates of the second direction or the x-axis or the vertical axis can be determined accordingly. Therefore, according to step 331 Β 'find one of the reading signals, the waveform of the waveform of FIG. 3c is the minimum position corresponding to the driving electric signal contact pad position coordinate 'getting the touch point in the second direction or the yaw axis or vertical The position coordinates of the axis. As for the judgment of the touch point in the first direction or the X-axis or the horizontal axis coordinate, according to step 332, the _ system compares all of the read signals corresponding to the drive electrical contact pads found in step 332. The waveform is used to find the position coordinate of the sensing signal contact pad corresponding to the electrical signal whose amplitude is changed to the maximum when the waveform is not touched and touched, for example, the first electrical contact pad 120 of the number 13 is obtained, and the touch point is obtained. Coordinates in the first direction or the X-axis or the horizontal axis. However, in the above step 332, the read signal of the adjacent sensing electrical contact pad or the first electrical contact pad 120 is based on the same driving electrical contact pad, such as the second electrical contact pad 140 numbered 13. The waveform caused by the input pulse signal is similar in amplitude when it is not touched and touched, so it is easy to cause misjudgment of the first party 12 201112065. To this end, Fig. 40 shows another example of the coordinate determination step 33. In this embodiment, the second flag determining step 331C is the same as step 331B. The coordinates of the second electrical contact pad based on the above-mentioned same or the Y-axis or the vertical axis are number 13; the coordinates at the position. Next, in step 332C, corresponding to the second direction or the Y-axis or the first direction of the recorded object or the direction of the X-axis or the horizontal axis, select a touch point 'as shown by _ 5A'. The axis coordinates of the touch point are numbered 3, 8, respectively.

The coordinates of the first electrical contact pads 120 of 13, 28 and 43. Then, in step 333C, the difference of the electrical signals of the sensing electrical signals corresponding to the touch sensing pads or the first signal contact pads 120 of the touch points when not touched and touched are calculated and stored. The unit of the signal difference value is, for example, millivolt (mv). Then, in step 334C, the X-axis coordinate of the touch point whose position is unknown is obtained according to the difference between the electric signal stored in step 333C and the difference of the electric signal of the touch point whose position is unknown.

Table 1 below shows an example of actual values in which the coordinates of the first direction or the x-axis or the horizontal axis and the coordinates of the second direction or the x-axis or the vertical axis respectively sense the telecommunication contact pad or the first telecommunication contact pad 120. And the number indicating of the driving electrical contact pad or the second electrical contact pad 140. Table 1 Χ^χ axis 3 8 13 28 43 Υ 3 215 247 279 380 469 8 200 237 272 374 462 13 184 221 263 370 461 18 166 200 243 365 459 23 147 178 217 356~ 456 13 201112065 28 127 154 189 337 449 33 107 130 160 296 438 38 87.2 106 130 244~42〇~ 43 66.9 81.1 100 189 378 48 50.1 60.8 75.2 144~ ---_ 313 **— ——1

The data in Table 1 can be plotted as shown in Figure 5B. The vertical axis in the graph indicates the electrical signal difference when the electrical signal read by the sensing contact pad is not touched and touched, and the horizontal axis indicates the coordinate of the first direction or the X-axis or the horizontal axis. The data in Table 1 or Figure can be stored in advance or touched by the user before using the touch panel. After the step 331C reaches the coordinates of the second direction or the γ axis or the vertical axis, the corresponding first direction or the coordinates of the X axis or the horizontal axis can be obtained from the table 1 or FIG. 5B according to the electrical signal difference * by step 334C. . The above is only the preferred embodiment of the present invention, and is intended to be limited to the application of the present invention. Any other equivalent changes or modifications that are not departing from the spirit of the invention should be included in the following. Within the scope of the patent application.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a cross-sectional view showing the structure of a touch panel according to an embodiment of the present invention. FIG. FIG. 1C shows the capacitance formed by the touch panel at a touch point. 2A is a schematic diagram showing the combination of the first conductive film and the second conductive film in FIG. 2A according to the touch point positioning system of the touch panel of the first embodiment of the present invention. FIG. 2C shows the contact of the second conductive film and the second conductive film. The waveform of the electrical signal sensed at the touch. 14 201112065 FIG. 2D shows the telecommunication signal corresponding to a pulsed electrical signal input by a certain sensing signal contact pad when there is no touch point on the touch panel of FIG. 2B. A magnified view of the waveform of the number. 2E shows a pulsed electrical signal input corresponding to a specific driving electrical contact pad when there is a touch point on the touch panel of FIG. 2B, and a sensing electrical contact pad is not touched or touched. The waveform of the read electrical signal is enlarged. FIG. 3A shows a touch point positioning system of a touch panel according to a second embodiment of the present invention. FIG. 3B shows a merged schematic view of the first conductive film and the second conductive film in FIG. 3A. • Figure 3C shows a waveform diagram of the electrical signal sensed by one of the sensed electrical contact pads of Figure 3B as it is generated at a touch point. FIG. 3D shows the waveform of the electrical signal read by a sensing electrical contact pad corresponding to the input pulse signal of a specific driving electrical signal contact 尚未 when there is no touch point on the touch panel of FIG. 3B. Enlarged image. FIG. 3E shows a pulsed electrical signal input corresponding to a specific driving electrical contact pad when there is a touch point on the touch panel of FIG. 3B, and a sensed electrical signal is contacted when it is not touched or touched. The waveform of the read electrical signal is enlarged. FIG. 4A shows a method for positioning a touch point of a touch panel according to an embodiment of the invention. Fig. 4B shows an implementation flow of the step of judging the coordinates of the touch point position of the system according to Fig. 2B. Fig. 4C shows the implementation flow of the step of determining the touch point position of the system according to Fig. 3B. Fig. 4D shows another implementation flow of the step of determining the coordinates of the touch point position of the system according to Fig. 3B. Figure 5A shows the number of touch points selected in the X-axis direction corresponding to the drive electrical contact pad numbered 13. 15 201112065 FIG. 5B is a graph showing a plurality of contact electric field difference peaks 4 selected in the X-axis direction corresponding to the driving electrical contact pad numbered 13.

[Main component symbol description] 1 touch panel 11 first insulating substrate 12 first conductive film 120 first electrical contact pad 13 insulating layer 14 second conductive film 140 second electrical contact pad 15 second insulating substrate 16 finger 17 Drive circuit 18 Sensing circuit 19 Waveform 21A when the controller 20A is not touched Waveform 20B when touched Waveform 21B when not touched Waveform when touched 2A Touch point positioning system of the touch panel 2B Touch panel Touch Point Positioning System 31-33 Steps 331A-332A Step 33 includes the implementation steps 331B-332B Step 33 includes the implementation steps 16 201112065 331C-334C Step 33 of the implementation step C1 First capacitor C2 Second capacitor

17

Claims (1)

201112065 VII. Patent application scope: 1. A touch panel comprising: a first insulating substrate; a second insulating substrate; an insulating layer disposed between the first insulating substrate and the second insulating substrate; The first conductive film has an electrical impedance anisotropy, and the first insulating substrate and the absolute substrate have an impedance anisotropy, and the second insulating layer is connected to the nth electrical connection. Configuring _$—conducting the edge-to-first direction of the second electric contact pad, disposed in the second side of the second guiding periphery, wherein the electrical resistance of the second direction is less than Wei= The CNT film of the conductive film in the first direction is smaller than the other direction. The touch panel of the second aspect of the invention is the laser cutting wire. The second insulative substrate of the board and the second insulative substrate, wherein the material of one of the transmitting-insulating bases is a combination of lower parts: fv>. 18 201112065 poly(p-phenylene terephthalate) Self-purpose (PET), polycarbonate (pc), polymethyl methacrylate (PMMA), polyamidamine (PI) and polyethylene (pE). 5. The touch panel of claim 1, wherein the first direction is perpendicular to the second direction. 6. The touch panel of claim i, further comprising: a driving circuit that inputs an electrical signal to the first electrical contact 塾; and a sensing circuit that reads the second Electric 峨 _ the electrical signal sensed by the pad. 7. The touch panel of claim 6, further comprising a controller that controls the driving circuit and the wei, and determines the touch panel based on the electrical signal read by the domain road The location of the touch point. < The touch panel of claim i, further comprising: a driving circuit that inputs an electrical signal to the second electrical contact; and a sensing circuit that reads the scale - the electrical signal The electrical signal of the chick. The touch panel of the eighth aspect of the invention further includes a controller, the driver circuit and the sensing circuit, and the position of the touch point on the touch panel is turned according to the domain measurement.触·Magic Control Panel Touching Gorge Method This panel includes—with a resistor ί layer=ΠΓ a second conductive film with anisotropy, an absolute, a μ-conductive film and the second conductive film, The second conductive film is disposed in the second direction of the second conductive display edge, wherein the second conductive film is disposed on the first conductive pad and the second electrical contact is disposed in the second direction The first conductive non-proximate control panel is controlled by the surface, and the positioning is performed by the τ column step: 3 inputting a signal to the first electrical contact pads; reading the electrical signals sensed by the second electrical contact pads And determining the position of the touched surface on the touch surface based on the read scale electrical signal. The touch point positioning method of the touch panel according to claim 10, wherein one of the first conductive film and the second conductive film comprises a CNT film. 12. The touch point positioning method of the touch panel according to the first aspect of the invention, wherein the first direction is perpendicular to the second direction. 13 . The touch point positioning method of the touch panel according to claim 1 , wherein the step of determining the position of the touch point on the touch surface according to the read electrical signals includes: The amplitude of the waveform of all the electrical signals is the position coordinate of the second electrical contact pad corresponding to the largest one of the electrical signals when the touch is changed from the touch; and the comparison is read from the second electrical signal. The waveform of the contact pad's electrical signal is not touched and touched, and the position coordinate of the first electrical contact pad corresponding to the maximum amplitude of the waveform is found. 14. A method for locating a touch point of a touch panel, the touch panel comprising a resistor 20 201112065=to the H-guide surface, the first touch of the electrical impedance anisotropy is disposed in the first complex-electric signal The contact 塾 is disposed in the second direction of the second gas signal and the second plurality of electrical signals, and the second conductive film is adjacent to the control panel, and includes the following steps: the electrical signal is input to the Waiting for the second electrical contact pad; reading the electrical signal sensed by the first electrical contact pads; and determining the position of the touched point on the surface according to the read position. The touch point positioning method of the panel of claim 14 , wherein the first conductive film and the second conductive film comprise -CNT臈. 16 · The touch panel of claim 15 The touch point positioning method, wherein the CNT film has a plurality of laser cutting lines. The touch point positioning method of the touch panel according to claim 14, wherein the first direction is perpendicular to the second direction 18. Touch as described in claim 14 The method for locating the touch point of the panel, wherein the step of determining the position of the touch point on the touch surface according to the electrical signal taken by aj includes: finding out that the waveform amplitude of the one of the read ones is the smallest The position coordinates of the two electrical contact pads; and comparing the waveforms of all the electrical signals read corresponding to the second electrical contact pads 21 201112065, to find out that the waveform touches the corresponding first electrical signal when not touched The amplitude of the pad is changed to the coordinate of the largest electrical signal. 19. The method for locating the touch point of the touch panel according to claim 14 of the patent application, wherein according to the electrical signals taken by w, judging The step of touching the position of the touch point on the surface includes: finding a position coordinate of the second electrical contact pad corresponding to the minimum amplitude of the waveform in one of the reading signals; calculating and storing respectively corresponding to the second electrical signal The difference between the electrical signals of the plurality of touch points selected in the first direction of the contact pad at the position of the contact pad when not touched and when touched; and according to the stored electrical signal The difference judges the position coordinates of the touch point in the first direction. twenty two