TWI253584B - Coordinate positioning system of touch panel - Google Patents

Abstract

A coordinate positioning system of touch panel is disclosed, which comprises a analog resistive touch panel, a signal amplifier module, an adder module, a subtractor module, and a divider module. The signal amplifier module receives and processes the current signal which is generated by the user's clicking the specific position of the touch panel and comprises the specific position message, so as to generate the output of a first set of amplifying signal and a second set of amplifying signal. The adder module proceeds the adding computation onto the first set of amplifying signal and a second set of amplifying signal, so as to generate the first adding signal and the second adding signal for outputting. The subtracter module proceeds the subtracting computation onto the first set of amplifying signal and a second set of amplifying signal, so as to generate the first subtracting signal and the second subtracting signal for outputting. The divider module proceeds the dividing computation onto the first adding signal and a first subtracting signal to generate the first coordinate signal, and proceeds the dividing computation onto the second adding signal and a second subtracting signal to generate the second coordinate signal, so that the coordinate of the specific position on the panel can be assured according to the first and the second coordinate signals.

Description

1253584 IX. Description of the invention: [Technical field to which the invention pertains] relates to a touch panel seat calibration (four), system, in particular, a coordinate positioning of an analog resistive touch panel, [prior art] & ° production ί:: The popularity of the 'keyboard and mouse has become the general public to accept the process of reading X," and because of the advancement of electronic technology, the introduction of poor input devices continue to develop new products, the combination of the curtain The control panel (TouchPaneI) has been developed as ', - / recent years' 3C products in the pursuit of short, light and thin, the hand into the system has become the data wheel φ,, ancient ^ input, transparent network: same as the traditional The keyboard and the slip-on oxygen touch panel can be directly attached to the display as the space occupied by the input system and the mouse. The touch panel is user-friendly;::!, almost no teaching or learning is required. Directly use the function indicators on the (four) side to select the required application computer, ship, mobile phone, notebook computer and eye-catching touch panel technology are mainly divided into optical, ultrasonic, infrared, spring, capacitive And resistance type. According to the principle of touch technology = panel system, the light interception method produces induction, generally applied to high 2 ..., 'eight 饧 较 、, lower resolution, so the general convenience is not high; Waves, touch panels are induced by ultrasonic sensing, which have the disadvantages of being inconvenient and externally disturbed, and cannot use harder materials as the touch medium. Therefore, it is easy to cause interference due to water droplets or oil stains. Only 18163 5 1253584 can be applied to larger size products, such as public inquiry machines and other information devices; while capacitive panels are waterproof, scratch-resistant, and have high transparency, and can be applied to various types, winter: products The disadvantage is that the panel process is more complicated and needs to be coated with a multi-layer film. Therefore, the cost is high, and it cannot be applied to small-sized products at this stage; the resistance type is induced by the pressure-measuring method, and the technical principle is to utilize indium tin oxide (ITO). Conductive glass and conductive plastic film (iT〇PET Fiim) are the main raw materials/3⁄4% with spacer between the upper and lower coated transparent electrodes. When a finger, stylus or other object applies pressure to the upper electrode 2 The upper and lower electrodes are turned on and generate a potential difference, and the coordinates of the pressure object are further calculated and displayed on the display. Since the resistive touch panel is more affordable, the current touch panels are mostly such touch panels. The touch panel is roughly divided into a digital touch panel and an analog type = empty panel. The digital resistive touch panel is formed on the upper substrate to form a plurality of conductor films, and a plurality of longitudinal conductor films are formed on the lower substrate. The substrate and the lower substrate are disposed opposite to each other, thereby forming a plurality of laterally and longitudinally-connected conductor films to form a plurality of matrix-arranged conductors. Therefore, the detection manner of the touched position is based on the current value of the conductive poles that are turned on or The voltage value is used as a reference. However, if the digital resistive touch panel needs to increase the input position solution = the number of wires to increase the number of t-wires, the relative narrowing of the plurality of wire film spoons, the table and the line spacing are This requires the use of more precise exposure micro-development technology: the need to make the touch panel manufacturing cheap, high-capacity demand is extremely faint in the shortcomings of the above-mentioned digital resistive touch panel Accordingly, that type 1816361253584 development than the resistive touch panel (Analog Resistive T〇uchpane]) of. As shown in FIG. 1 , the conventional analog resistive touch panel coordinate positioning method is an electrode 1 〇〇 and 1 〇 1 on the opposite side of the conductive glass 10 (the electrodes 100 and 101 are used to detect the touch panel). Whether the γ-axis is touched or not) applies a 5V bias voltage to generate a uniform potential field (as shown) in the conductive glass 1〇, and electrodes 12〇 and 121 on opposite sides of the film 12 (the electrodes 120 and 121) Applying a 5V bias voltage to detect whether the axis of the touch panel is touched to generate a uniform potential field on the surface of the ΙΤ〇ρΕτ film 12, and the ΙΤ0 conductive glass 1〇&ΙΤ〇ρΕτ film Η The domain plates na, 13b are respectively supported, and the ΙΤ〇 conductive glass 1〇 and ιτ〇 PET film 12 are separated by a spacing point (DGtSpa(10)) 14, when the finger 16 corners and the upper part (4) ITQ PET film material, the IT 〇 conductive glass 1〇 and the PET film 12 are in contact with each other and generate an on current (the on current is an X-axis current signal or a ¥axis current signal) for calculating the position of the applied point. ..., and the above-mentioned coordinate positioning method needs to hold t on the lower conductive glass ^IT〇pET film 12; and then generate a uniform electric field 'to make the touch I: 1!; thus causing a large amount of power loss waste . In addition, in this pass, the output of the χ axis and the Υ axis is two ±, and the axis signal is processed to process the single-axis, := requires time-sharing (only at the same time - the axis can be positioned after the axis positioning is completed) The touch panel slows down, and the 5V bias causes the panel to have poor resolution: The touch panel of the control panel is covered with a conductive, four-sided panel scanning signal; two: the conductive ore direction produces an alternating current gradient. The surface of the heart and the coffee has a % signal to the imitation I-inch house and touches the point. In the circuit, the detection is defined as a complex structure in the circuit on the touch panel, and the position is checked. This is noisy, costly and not efficient. The structure is simple: 2 = No. 4897511 also reveals a kind of circuit rack 2Α :: The method of touching the position of the panel sensor. As shown in the figure, the touch panel sensor: The transparent resistance of the resistor? v 七 曰, with a pre-surface appearance), and the resistance layer between the resistance/? has a gap (the opposite ends of the ig are formed with wires 5a, 5b, the electricity, the opposite edge of the 曰❺ A wire orthogonal to the wires 5a, 5b is formed: two: r, r? is disposed on the periphery of the device with a grounding resistance Rg u connected to the ... and the wire 5b. The field does not touch the touch panel In the case of the sensor, the resistance f 2, 2' is phase separated. At this time, the equivalent resistance between the wire and the turns is called, and the equivalent resistance between the wire 5a and the north is Riq, in this case' Since the current supplied by the constant current source 7 cannot flow through the resistance layer 252, the wires 5a and 5b and the wires 5a, 5b have no electricity: a difference is generated, resulting in the wires 4 and 5] 3 and the wires 5a. The same as the input of the 讣, subtractor 8 and subtractor 9, so that the subtractors 8 and 9 output Vxo=05Vy〇=〇. 18163 8 1253584, the resistance sound 2 2... on the touch panel sensor,” When the electrical connection is made through the resistor layer in the middle interval, the conductor has the equivalent resistance between the conductor 5 a and the point is RU, and the ratio between the two points is The iso-resistance is Rui, and the equivalent resistance between the resistance sound 4 line 5a and the position p is the equivalent of the illusion 'P between the P-capsules Μ V, the spring 5b and the point] 扪 hand effect% resistance is R1 , and the contact resistance of the resistive layer 2盥 is Rc. From the strange current: at line P, line 5a, point p, and wire % "pass path guide, kiss command 4 to find the power and call and pass The grounding resistance ^ is a potential difference between Ru' 5a and point p: a potential difference is generated between ^ and ^. Here, the resistance of the point p is helmet-poor, and the tower is weak, due to the subtractor The turn-in power Π * The current of the resistor Rul is the resistance of the Rux current j, the left wx of the wire w is applied to the two inputs of the subtractor 8) The potential difference is XV (that is, the potential difference, ie v - v The error is detected by the subtractor δ, and the potential difference can be detected by the subtractor 9; 2. Coordinate: Similarly, the Υ axis coordinate of the point ρ is measured. y P Yo Vy, 攸 检 - - - : : = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Resistive touch panel. Clear, into:: τ - a fast positioning speed, high resolution, circuit frame: 2 low cost, and can save energy touch panel coordinates == avoid the lack of conventional technology 18163 9 1253584 SUMMARY OF THE INVENTION In view of the above-mentioned conventional techniques, a coordinate positioning speed is fast and the resolution is 0. The main purpose of the present invention is to provide a simple circuit structure of the touch panel coordinate positioning system and reduce the product cost. Another object of the present invention is to provide a touch panel coordinate positioning system with high reliability. A further object of the present invention is to provide a panel coordinate positioning system. For the above and other purposes, the present invention discloses a touch panel coordinate positioning system, which mainly includes an analog resistive touch panel, which is used to touch a specific position on the panel to generate the included The signal output of the position coordinate message; the signal amplification module is for receiving and processing the electrical signal outputted by the panel and at least generating the output of the first group of amplified signals and the second group of amplified signals; the addition module is used Adding the first set of amplified signals to generate a first added signal output, and adding the second set of amplified signals to generate a second added signal output; the subtracting set is used to The first set of amplification signals is subtracted to generate a first subtraction signal output, and the second set of amplified signals is subtracted to generate a second subtraction signal rounding; and a dividing module is used to a summation signal and the first subtraction signal are divided to generate a first coordinate signal, and the second addition signal and the second subtraction signal are divided by Health second coordinate signal, it may serve to determine the position of the touched touch panel according to the first and second signals a standard. The signal amplification module, the addition module, the subtraction module and the division module form a coordinate positioning circuit of the 10 18163 1253584 analog resistive touch panel. Compared with the prior art, the present invention has the advantages of simple circuit structure, fixed (four)=red panel coordinate positioning system, and the like, and the advantages of high clamping speed and high resolution. The following example is explained by a specific example of 4 inch 孰籴, 孰籴J: 卜姑荈a, 丨+^月 yoke 睁 ^ ^ ir ir by the contents disclosed in this manual easily 『二”乡For the implementation or application, the details in the present specification are also various (four) and changed. The shirt is carried out in the spirit of the present invention as shown in FIG. 3A, which is the touch panel coordinate positioning system of the present invention, and the washing method is adopted. The basic structure block diagram 3. The touch panel coordinate positioning system 3 includes: an analog resistive touch panel % (the structure is not shown in FIG. 3B) is used to generate a specific position on the panel by the user. The current signal output includes the coordinate information of the position; the signal amplification module 31' is configured to receive and process the current signal output by the panel to generate an amplified signal output, and the amplified signal includes at least a majority of the first group of amplified signals and a majority The second group of amplification signals; the addition module 32 is configured to add the first group of amplified signals to generate a first addition signal output, and add the second group of amplified signals to generate a second addition signal output; the subtraction module 33 is configured to perform subtraction on the first group of amplified signals to generate a first subtraction signal output, and perform subtraction on the second group of amplification signals to generate a brother The second subtraction signal output ·, and the dividing module 34' is configured to perform a first coordinate signal on the first addition signal and the first subtraction signal to generate a first coordinate signal, and the second addition signal and the second addition signal The subtraction signal is divided to generate a second coordinate signal, and the position coordinates of the panel are determined according to the first and second coordinate signals. The signal amplification module 31, the addition module 32, the subtraction mode The group 33 and the dividing module 34 constitute the coordinate positioning circuit 35 of the analog resistive touch panel. ',,, 1, 1 , the small 匕 still 3 yuan force into the fast" 1 υ, 311, 312 ' 313 ( The signal amplifiers 31〇' 311, 312, 313 are shown in FIG. 4 of the rear station), and the amplifiers 31〇, 3ii, 3i2, 313 are transmitted through the external cable 36 and four surfaces of the conductive film layer 300. Wire 3〇3 Connection, but may, depending on need, the signal amplifier 310, Bu 31 312, may achieve the same function of the amplifier circuit or the generation of said electronic component.忒Signal amplifier 3 1 〇, 3 11,3 12m A & ^ can also be a current amplifier, for the door to a strong amplifier 'dry' between the present invention, in the invention scars, voltage amplifier This is illustrated by way of example and not by way of limitation. . The adding module 32 includes an adder 32 〇, a 3-state 320, and a 32 1 is a fourth to two adder 320, 321 which will be described later, and may be replaced by a singularity. 'Amplifier circuit or electronic unit that achieves the same function. The subtraction module 33 includes subtraction 330, 331 is 4 ° ° as described later (the subtractor 330, 33 1 can also be achieved by the phase J). This subtraction is replaced as needed. . Functional amplifier circuit or electronic component The division module 34 includes division 1 (the dividers 18) 63 】 2 1253584 (10), and (4) is a fourth diagram 34 〇 341, which will be described later, to achieve the requirements of the quasi-servant. This division is replaced by D. The amplifier circuit or electronic component of the same type as shown in Figure 3B is the analog resistive touch panel in the positioning system = Ming touch panel coordinate resistive touch panel 3Q is the traditional analogy = and Structure, the analog panel 30 includes a guide, a resistive touch panel, and the touch (field, then... (^, test ^: strip high-conductivity metal electrode printing method printed on the conductive thin:) The electrodes 300a, 3_, 3〇〇c, 3〇2: (the metal is shown); the conductive j3 opposite to the conductive film layer 300 is applied to the thin film layer 101 of FIG. 4 which will be described later. There is a bias v (such as V 2 3 -1,: the analog resistive touch panel comprises a substrate 3: / =). wherein, the conductive film layer 3, 301, and the == system Used to respectively support ^ ^ I, 306 ( D〇t Spacer } fa1 ;;; ^ 3; ° 5 301 ^ 〇.! V to 20V, and now the pv count ^ gate ^ open. In the example of the repeated V value system, the core factory/value is preferably 0·5ν^ν, which is 〇5V in the present embodiment. The conductive film layer 300, 301 is a system: value:::Τ〇) The material is made of 'and the conductive film layer 3, 3. 3 ohms 4: to: 咐 ^ 岑 岑 / tens to 200 ohms / square. As shown in Figure 4, it is the touch of Figure 3A above Face ^ (four) (four) block diagram. As shown in the figure, 'the center point 0 of the conductive bond layer 300 of the resistive touch gold corpse 1 is defined as the coordinate origin, and the direction of the electric i& 300a is defined as the γ axis direction. The metal electrode 18163 13 1253584 has a direction of X ♦ from the direction of the person p. Therefore, the metal electrodes 300a and 300b are used for the direction of the axis of the conductive film layer, and the metal electrodes 300c and 300d are used. w flat, 曰 a #, bitter is used to measure whether the γ-axis direction of the conductive film layer 3 被 is touched by the user, and the wires are respectively torn with the signal amplifiers 31〇, 311, 312, 313 in the signal Electrically connected. When the user touches the specific position on the resistive touch panel 3, the conductive thin film layer 300 '3 () 1 is electrically connected and stored. The difference ν (provided by the two bias voltages V), by touching the position ρ of the conductive thin film layer 3 (8) to the high-conductivity metal electrodes on the four sides of the conductive enamel film layer 30Q, respectively, 3嶋, 3〇〇c, 300d have different The distance between La, Lb, Lc, and ^ (ie, the distance between the gold electrodes 300a and 300b is the distance La plus the distance Lb, and the distance between the metal battery 3〇〇c and 300d is the distance Lc plus the distance (4), and further, the conductive film layer 300 surface produces relative impedance Rm

Rd, and the impedance of the conductive film layer 3GG of the money Ra, Rb, Rc,

Rd is converted into a corresponding current signal by the Ohm's law, and the metal electrodes 300a, 3_, hiring, 3_, the wires 3〇3 and the external wires 36 output the current signal 至^^ to the coordinate positioning a circuit structure such that the signal amplifier of the coordinate circuit % converts the current signal ^^^^ into a voltage signal of %, ^, ^,

Vd, and adding, subtracting, and dividing the voltage signal by the adders, subtractors, and dividers to generate a first coordinate signal

Nvx- ( va — vb) / ( Va + Vb) and the second coordinate signal ... corpse (Vc -

Vd) / (Vc + Vd), 俾 can be based on the first and second coordinate signals ^,

Nvy determines the coordinates of the specific position p on the analog resistive touch panel. It is in 18163 14 1253584.亥ί座 ' δί1唬Ννχ is a coordinate value indicating the position p on the x-axis, and its range is "to + 1," the second coordinate signal NVy is a coordinate value indicating the position on the WY axis, and its range Is for... The first (four) sense and the second coordinate signal Nvy indicate the ratio of the position P to the central axis offset 倍: the ratio of the total effective side length of the touch panel 30. In more detail, apply the law of resistance (R=PL/A), where the parameter R is the position? To the four sides of the conductive thin film layer 300, the highly conductive all-electrode electrodes (300a, 300b, 300c and %__, the gate hairs (10), and the parameter p is the conductive thin static reactance (Ra, Rb, Rc,

The resistivity of the amine-conducting layer 300, the parameter L A 2 = the plate 30 is on the electroconductive thin film layer 3. . The effective length of the generated resistance wire, 3: the contact position Ρ and the respective highly conductive metal electrodes (3〇〇a, A is effective for touching the touch panel in the > The electric and spring cross-sectional area is assumed to be the thickness of the conductive thin film layer 3, which is the width of the effective electric resistance line, and the straight line is a constant value: the cross-sectional area A is the value of ^. The position is located on the conductive film layer 3 of the resistive touch panel 30, and the conductive material of the high conductivity metal electrode (30〇a, 3〇〇b, 3〇〇c& 3) Therefore, the electric 4 is homogeneous p for each highly conductive metal electrode (300a, listening, 3〇 (that is, the distance from the heart ... ^ (4) is proportional relationship. The length "again" applies Ohm's law V = IR, where the number of tables 溥The thickness applied to the film layer 301, / is the number of turns R is the point P to the impedance of each of the high-conductor 18163 15 1253584 metal electrodes (3〇〇a, 300b, 300c and 3〇Od) (Ra, Rb) , Rc, Rd), and the parameter I are outputted by the metal electrodes (3〇〇a, 3〇〇b, 300c and 300d) through the wires 303 The flow signals (Ia, lb, Ic, Id) are known by Ohm's law V II IR, and the current signals (Ia, Ic, Id, id) and the position P are turned to the respective highly conductive metal electrodes 3 〇 Qa, 300b, 300c, The distances of 3 00d are inversely proportional to the distances La, Lb, Lc, and Ld. The signal amplifiers 310, 311, 3i2, and 313 in the coordinate clamp circuit 35 (the signal amplifiers 310, 311, 312, and 313 are voltage amplifiers) are received. And processing the current signals la, lb, Ic, and Id to generate voltage signals Va, Vb, Vc, Vd (where Va=kIa5Vb=kIb, VC=kIC5Vd=kId5k have the same value), and the adder 320 is the voltage signal. Va and Vb are added to generate a first addition signal (Va+Vb) output, and the adder 321 adds the voltage amplification signals Vc and Vd to generate a second addition signal (Vc+Vd) output. The subtractor 330 subtracts the voltage amplification signals Va and Vb to generate a first subtraction signal (Va_vb) output. The subtractor 33 1 subtracts the voltage amplification signals Vc and Vd to generate a first The second subtraction signal (Vc - Vd) output, the divider 340 is the first plus The signal (Va+Vb) and the first subtraction signal (va_Vb) are divided to generate a first coordinate signal Nvx=(Va−Vb)/(Va+Vb), and the divider 341 is the second addition signal (Vc+Vd) and the second subtraction signal (Vc_Vd) are divided to generate a second coordinate signal Nvy=(Vc~Vd)/(Vc+Vd). The coordinate equation: X-axis direction coordinate Νχχ (X-direction side length) / 2 (Formula 1) Υ-axis direction coordinate = Nyx (Υ direction side length) / 2 (Formula 2) 16 18163 1253584 (Formula 3) (Formula 4 )

Nx-( Ia-Ib) /(Ia+Ib) Ny=(Ic—Id)/ (Ic+Id) where the X-direction side length is the distance La plus the distance Lb, and the Y-direction side length is the distance Lc Plus the distance Ld. Νχ and Ny represent the ratio of the offset of the central axis of the position Ρ to the total effective side length of the touch panel 3〇. From the above Va two kIa, Vb=kIb, Vc two kIc, Vd=kId and the same k value, Nx = Nvx, Ny = Nvy, so according to the Ννχ, Nvy and the above equation (Formula 1), (Formula 2 ) determining the coordinates of a specific position p on the touch panel. However, the touch panel coordinate positioning system 3 (represented here) is electrically connected to display the first coordinate signal Ννχ indicating the X-axis coordinate information and the Y-axis coordinate indicating the position 卩The second coordinate signal Nvy of the message is input to the signal processing circuit for more accurate correction' and the signal processing circuit can also make the electronic clothing combined with the touch panel system according to the first signal mark Ννχ, Νν For example, the signal processing circuit converts the first Nvx, Nvy into a digital signal and converts the display of the camphor control with the panel to display the inner valley of the person. However, the composition of the news of the Lu Xu Wang, the principle of the rabbit Iw 扎 唬 processing circuit, and 仏 仏 业界 业界 业界 业界 业界 业界 业界 不再 不再 不再 不再 卜 卜 卜 卜 卜 卜 卜 卜 卜 卜 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述), (Formula 2), (Formula + 'division operation is insensitive to the process, showing phase A and each advantage, and can also adjust the market of these fields according to actual needs, or Add relevant parameters to the equation to: The number is calculated according to the coordinates of 18163 17 1253584. The figure shown in Figure 5 is used to illustrate the circuit diagram of the touch surface = standard positioning line shown in Figure 4 above. The amplifiers 311, 311, 312, and 313 are electrically connected to the wires 3 〇 3 on the (four) layer 300 of the panel 30 through the external cable %. The signal is amplified to 3 1 0 by the amplifier a 1 And the voltage of the Leiyang-^ DO A1 and the resistor Rf is amplified as 'the signal amplifier 311 is a voltage amplifier composed of the amplifier A2 and the resistor element; the signal amplifier 312 is composed of the amplifier 3 and the package resistor a voltage amplifier composed of a device Rf; the signal amplifier 313 is a voltage amplifier composed of an amplifier A4 and a resistor element Rf. The amplifier is also amplified by Α1; Α2'Α3'Α4#^^^^ΑΕ (Operational amplAer), the resistor element The resistance of Rf is ι〇〇 ohm (9). The front end resistances of these signal amplifiers 31〇, 311, 312 and 313 are touched to 〇Ω, preferably Ω to 1〇〇〇Ω. The adder 320 in the module % is composed of an amplifier Α5 and a plurality of resistor elements. The addition method: 32i is composed of an amplifier A7 and a plurality of resistor elements. The amplifiers A5 'A7 are operational amplifiers, and the resistance of the resistor elements Ra is 10 ΚΩ. The subtractor in the subtraction module 33 is the subtractor The 〇 33 is composed of an amplifier A6 and a plurality of resistive elements Ra, which are composed of amplifying crying A8 and recording: element Ra. Among them, the amplifiers Α6, Αδ are transmission amplifiers, and the resistive elements Ra The resistance is ι〇κω. The divisions 34〇, 34 of the division 杈, and 34 are, for example, a division wafer (π). Since the above-mentioned operational amplifiers, division chips, etc. are electronic components commonly used in the electronics industry, their operation and functions will not be described herein. 18] 63 18 1253584 When the user touches a specific position p on the panel 30, the conductive film layer 300 has four conductive metal electrodes (3〇〇a, 3〇〇b, 3〇〇c, 3〇〇d). And the current signals (Ia, Ib, Ic, Id) outputted by the wires 303 are respectively fed to the amplifier A; 1, A2, A3, A4 are converted into voltage signals (Va, vb, Vc, Vd) and output to the amplifier The amplifiers A5, a7 of the force port processors 320, 321 generate the addition signals (Va + Vb) and (Vc + Vd) outputs, and output the voltage chaos (Va, Vb, Vc, Vd) to the subtractor 33.放大, 331 in the amplification of A6, A8 generate subtraction signals (va_) and (Vc__) know that the divider 340 can be used to divide the addition signal (Va + Vb) and subtraction signal (Va - Vb) The first coordinate signal Ννχ= (Va — Vb) / ( Va+Vb) is generated, and the adder 341 divides the addition signal (Vc+Vd) and the subtraction signal (Vc-Vd) to generate the second brother. The signal number Nv corpse (Vc-Vd) / (Vc + Vd), and then the position p coordinate is determined according to the first and the younger one. As shown in FIG. 6A and FIG. 6B, it is a basic structural diagram of the second embodiment of the present invention. For the sake of simplicity, the present embodiment only illustrates the difference from the first embodiment. The touch panel 4 of the present embodiment is used. The 〇 structure is the unbiased analog resistive touch panel disclosed in the applicant's party of the invention, and the patent application No. 93 of the patent application filed on September 9, 1993, as Shenyuemu S 93127250 5 The case of the tiger case # 'The internal structure of the resistive touch panel 4 包括 includes: the core layer 400 formed by the electret material (Eie gamma (10), having the first surface galvanic and the first The surface paste a is opposite to the second surface 4_; the transparent conductive film layer is provided with the first surface of the m layer 4GG; the transparent conductive film layer is 18163 19 1253584 K, and the second surface of the U is gamma b, Four high-conductivity metal electrodes 2, ^^^(4) and four wire cores are made of the network 4 = at the four edges of the transparent conductive film layer 401 (the gold ^ = , e'_ and the wire are as shown in Fig. 6B)接 Μ 术 术 术 术 边缘 边缘 边缘 边缘 边缘 边缘 边缘 边缘 边缘 边缘 边缘 边缘 边缘 边缘 接地 接地 接地 接地 接地 接地 接地 接地 接地The coordinate positioning circuit 35 of the control panel is connected to the large-mode (4) of the above-mentioned first embodiment, the t signal is placed at 31ϋΛ=, the signal of the circuit 33512 is placed as a voltage amplifier, and the signal amplifiers are A voltage amplifier composed of an operational amplifier 13 A 2, A 3 and A 4 ) 'Thunder resistance open pf η 7 with a pain-w匕 resistance element Rf and a capacitance element Cf (as shown in the figure). ', 3U, 312, 313, ... depending on the size of the tiger to enlarge the second. Also for the current amplifier, and 兮: the relay can also be replaced by the same function = parts. Referring to FIG. 6B, 'the center of the conductive film layer is defined to indicate the origin, the metal electrode 4〇1', and the direction of the electrode is the Y-axis direction, so the full port=, the gold is used to detect the conductive The film layer 4Q1 % a'401b touches, the metal electrode is turned on by the user to point V4...曰d to detect the second layer of the conductive film layer 401: set to be touched by the user. When the touch is touched When the position of the broken plate on the control panel 4 is p, the conductive film layer 4〇1, 4 is straw-charged by the core layer 400 The table ', the 〇 402 402 produces at least 〇 ι 以上 以上 ^ ^ ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι Conductive metal electrode correction heart 丨 丨 丨 丨 ^ ^ ^ ^ ^ ^ ^ ^ 分别 分别 分别 分别 分别 分别 分别

Lc, Ld (that is, the distance between the metal electrodes 401a, 401b is the distance "plus the distance Lb, the distance between the metal electrodes 401c, 401d is the distance Lc plus the distance

Ld), and then the relative impedance is generated on the surface of the conductive film layer 4 ()1

Ra, Rb, Rc, Rd, and the impedance of the corresponding conductive film layer 4〇ι

Ra, Rb, RC, and Rd are converted into corresponding current signals la, lb, Ic, and Id by Ohm's law, and the current signals are transmitted through the metal electrodes 401a, 4〇lb, 4〇lc, 4〇id. Ia, Ib, Ic, Id are output to the coordinate clamp hair path 35 for subsequent signal processing, that is, the signal amplifiers 3 1 0 5 3 1 1 , 312 , 313 ' respectively receive the current signals la, lb,

Ic, Id and generate voltage amplification signals Va, vb, Vc, Vd, the adder 320' adds the voltage signals Va, vb to generate a first addition signal (Va + Vb) output, the adder 321 The voltage amplification signals Vc and Vd are added to generate a second addition signal (Vc+Vd) output, and the subtractor 330' subtracts the voltage amplification signals va and Vb to generate a first subtraction signal (Va — Vb) output, the subtractor 331 is to subtract the voltage amplification signals Vc, Vd to generate a second subtraction signal (Vc - Vd) output, the divider 34 is the first addition signal (Va + Vb) And the first subtraction signal (Va-Vb) performs a division operation to generate a first coordinate signal Nvx=(Va - Vb) / (Va+Vb), and the divider 341' is the second addition signal (vc+vd) And the second subtraction signal (Vc-Vd) performs a division operation to generate a second coordinate signal Nvy = (Vc - Vd) / (Vc + Vd), which may be based on the first and second coordinate signals and the above-mentioned content 21 18163 1253584 Determines a specific position p coordinate on the panel 40. As shown in Fig. 7, it is a circuit architecture diagram of the second embodiment of the present invention. Different from the first embodiment of the present invention, the coordinate positioning circuit %, the sigma amplification state 3 10 ′ is a voltage amplifier composed of an amplifier A 4 , a resistance element Rf and a capacitance element cf , and the signal amplifier 311 a voltage amplification state consisting of a large amplifier A2, a resistance element Rf and a capacitance element cf, and a voltage amplifier 312, which is a voltage amplifier composed of an amplifier A3, a resistor element elbow and a capacitance element Cf, the signal amplifier commits, The voltage is amplified by the amplifier A1, the resistor element Rf and the capacitor element cf. Among them, the resistance of the resistance element is 15 〇Ω, and the capacitance of the capacitance element is 1@°, which works as the circuit structure shown in the figure. The working principle of the % road wood structure is the same, so it is no longer compared with the prior art, the circuit structure of the present invention is simple, and the 'two-two touch surface f coordinate positioning system' is low, which can reduce the product cost:; The precision of the touch panel and the touch panel of the present invention can be used to control the coordinate position of the telecommunications plate of the XY axis and the coordinate position of the panel. 〜 仃 amp amp amp 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 提升 、 提升 提升 提升 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 触控 触控;= When the electret material is supplied, it is turned on and the power is lost. The electric binding film is in contact state. The power loss is wasted. It can be avoided that the conventional touch panel technology is easy to make the connection with the touch panel. The coordinates of the positioning 18163 22 1253584 road wood structure, according to the two layers of the touch panel continue to have a 0.5V bias, or can be caused by the title +, pre-existing between the amine layers, the electrification of the earth's electricity The body material provides a slight bias to the specific position coordinates on the touch panel, because: has the advantages of analyzing the south and high reliability. In the above, the embodiments are merely illustrative of the principles and advantages of the invention and are not intended to limit the invention. For example, and the enthalpy of the enthalpy, ^ 〇, the metal electrode V formed on the 401, the number of the table is not limited to four, can also be based on the guide 300, 40 1 difficult inspection, a, people, Book April fruit layer, person ===:=: ==== The scope of protection of the present invention 'should be as follows [simplified description of the drawing] $1 is the structure of a conventional analog resistive touch panel 2A and 2B are the schematic diagrams of the basic structure of the *resistive touch panel shown in the U.S. Patent No. 4,819,511; ^3A is the first touch panel coordinate positioning system of the present invention. FIG. 3B is a schematic structural diagram of a touch panel coordinate positioning resistive touch panel of the present invention; FIG. 4 is a detailed description of the touch panel coordinates of FIG. 3A. Schematic diagram of the basic structure of the positioning sequence and the system; FIG. 5 is a schematic diagram showing the life structure of the touch panel coordinate positioning system of FIG. 4; 18163 23 1253584 FIG. 6A is the second touch panel coordinate positioning system of the present invention. The structure of the analog resistive touch panel of the embodiment is not intended, FIG. 6B The basic architecture of the second embodiment of the touch panel coordinate positioning system of the present invention is not intended, and FIG. 7 is a schematic diagram for explaining the circuit architecture of the touch panel coordinate positioning system of FIG. [Main component symbol description] 10 ITO conductive glass 1005101, 120, 121 electrode 12 ITO PET film 13a, 13b substrate 14, 306 spacer point 16 finger 2, 2, transparent resistance layer 3 touch panel coordinate positioning system 30, 40 analog resistive touch Control panel 300, 301, 401, 402 conductive film layer 300a, 300b, 300c, 300d metal electrode 303, 403 wire 304, 305 substrate 31, 31, signal amplification module 310, 311, 312, 313 signal amplifier 310, 311, 312, 313' signal amplifier 32, 32 Addition modules 320, 321, 320, 321 , adders 24 18163 1253584 33 , 33 , subtraction modules 330 , 33 , 330 , 331 , subtractors 34 , 34 , division modules 340 , 341 , 340 ′, 34Γ divider 35, 35' coordinate positioning circuit 36 external wiring 400 core layer 400a first surface 400b second surface 401a, 401b, 401c, 401d metal electrode 5a' 5b, 5a, 5b wire 7 current source 8, 9 subtractor A1, A2, A3, A4, A5, A6, A7, A8 Amplifier Cf Capacitance element I, la, lb, Ic, Id Current signal L, La, Lb, Lc, Ld distance Nvx? Nvy first coordinate signal NVy second coordinate signal Rf resistive element R, Ra, Rb, Rc, Rd impedance bias voltage V Va, Vb, Vc, Vd voltage amplified signal

25 18163

Claims (1)

1253584 X. Patent application scope: h—a touch panel coordinate positioning system, comprising: an analog resistive touch panel, which is generated when a user touches a special position of the panel, and generates a coordinate message including a specific position on the panel. The signal output module is configured to receive and process the electrical signal outputted by the analog resistive touch panel to generate an amplified signal output, and the amplified signal #u includes at least the first group of amplified signals and the second group The amplification signal ·, ^ addition module is used for adding and subtracting the first group of amplified signals to generate a first addition signal output, and adding the second group of amplified signals to generate a second addition signal Outputting the _ minus 杈 group for subtracting the first set of amplified signals to generate a first subtraction signal output, and subtracting the second set of amplified signals to generate a second subtraction signal output; And two. The division group is configured to divide the first addition signal and the first subtraction 5 to generate a first coordinate signal, and to divide the second and the second subtraction signal In order to generate the second coordinate signal, 俾可佑妙 i #斤早j determines the 4-inch 疋 position coordinates on the panel based on the code of the younger brother and the second division. Shen: The scope of patents! The touch panel coordinate positioning system of the present invention, wherein the analog resistive touch panel comprises: μ conductive film layer 'the sides of the first conductive film layer are divided into two 2! electrodes and electrically connected to the metal electrode The wire passes through the μ to the pole to produce a signal corresponding to the coordinate position of the panel at a specific position of the panel according to the specific position of the user touching the panel, and outputs the signal to the source through the ¥4 The signal amplifying module; the second brother = the electric layer, which is opposite to the first conductive film layer, and a bias is applied to the two layers of the film; and a plurality of dot points (DotSpacer) are formed in the The first and second conductive films are spaced between the film layers. The application of the touch panel coordinate positioning system of the second item of the patent scope, wherein the '¥ touches the panel and the thickness of the film is connected n 吟, the young one and the second conductive thin "-V-pass" by the bias between the first and the first layer to generate a smear * ^ Ding / find the waist potential is, so that the first conductive The surface of the film layer is produced on the panel containing 7% of the The electrical signal of the coordinate information of the position, the metal electrode and the tomb of the mountain are sent to the signal amplification module. 4 · If you apply for a patented screenshot of the two touch panel coordinate positioning system 1 of Chu Weidi, The bias voltage is 0.1V to 20V. 八5 · If the touch panel coordinate positioning system of the 2nd application of the patent scope Chugan Yule 2, the bias voltage is 0.5¥ to 5V. The rib diagram wears a touch panel coordinate positioning system of the second brother. The ': analog resistive touch panel system includes: Z, a core layer, which is formed by an electret material, and the core layer has a surface and The fish comprises a female wearer X/10, a second surface opposite to the surface of the Haidi; a conductive film layer disposed on the first layer of the core layer and provided with metal electricity on each side of the surface of the first conductive film layer a wire electrically connected to the paste electrode, through which the metal electrode is generated according to a specific position of the user to touch the panel, corresponding to the panel 乂18163 27 1253584, through the guide _Xindi two conductive film layer, the system is set In the core layer ^ - eight (five), mouth And 々; kiss heart of the latent ι A ground terminal is grounded at an edge of the second conductive film layer. :; Applying for the touch panel coordinate positioning system of the sixth item of patent scope, when the point guide, #丄弟和弟一电电膜层 contact:! The piezoelectric properties of the electret material of the core layer are A potential difference is generated between the two layers of the second conductive film and the second conductive film layer, so that the surface of the conductive film layer generates a signal including a specific position on the panel, and the surface of the conductive film is enlarged by a π1 heart. The pole and the material wheel are sent to the news. 8 · As claimed in the patent scope, the first and the first materials are made. 2 or 6 touch panel coordinate positioning system, the second conductive film layer is made of indium tin oxide (IT〇) 9 · Please f (four) around the f 2 or 6 touch panel coordinate positioning system: ° Haidi - and second The conductive film layer has a resistance of 1 ohm/square to 2000 ohm/square. Person/dry 1()1°, special range 2 or 6 touch panel ticket positioning system The resistance of the first and second conductive film layers is 50 ohms to 200 ohms/square. Call it, its resistance • The touch panel seat clamping system of the first scope of the patent scope, the 'signal amplification module' includes most signal amplifiers. 11 Applying for the touch panel coordinate positioning system of item 11 of the patent scope. Each of the signal amplifiers of the fl唬 amplification group consists of an amplifier and 18163 28 1253584 components. As in the touch panel coordinate positioning system of the nth item of the patent application range, the front end resistance of the signal amplifiers is a gate of 1 〇〇 to 2 〇〇〇 ω, 14. The touch panel of claim 11 The coordinates of the coordinate system, γ, the front end resistance of the signal amplifiers are 2嶋 to 1〇15. The touch panel coordinate positioning system of the 12th item of the patent application scope is: The resistance of the resistor element is 100 Ω. In the touch panel coordinate positioning system of the invention, the signal amplifiers of the signal amplification module are composed of an amplifier resistance element and a capacitance element. 17·: The touch panel coordinate positioning system of the 16th patent application scope: the resistance value of the component is the discussion, the touch panel coordinate positioning system of the second application of the second patent, the ° Hai addition module It includes a number of adders. 19=The scope of the application of the item 1 is the m-plate coordinate positioning system. ΛAddition 桓, each adder in the group is turned on by the amplifier & resistance component. 2: The touch panel coordinate positioning system of claim 19, i. The resistance of the 71-piece resistor is 1GKH. The monthly patent consumption is 12, 16 or 19 touch panel coordinate positioning. The amplifier is an operational amplifier (Operationa! amplifier). In the touch panel coordinate positioning system of claim 1 of the patent scope, in 18163 29 1253584, the subtraction module includes a plurality of subtractors. ^Declare the touch panel coordinate system of the 22nd item of the patent track, complex:: The subtractor in the subtraction module is the touch of the 23rd member of the patent In the control panel coordinate positioning system, the resistance value of the 忒 resistor element is 1 〇ΚΩ. In the touch panel coordinate positioning of the 23rd item of the application scope, the amplifier is an operational amplifier. The patent application of the touch panel coordinate positioning system of the jth item, the division mode The group includes most dividers. ', Π: The touch panel coordinate positioning system of the 11th patent application scope, the complex 'the signal amplifier is a voltage amplifier and current amplification: —. /, τ之申》月专利The touch panel coordinate positioning system of Capricorn No. 18, in which the 'adder can be replaced by a similar function instrument and amplification: Saki / A, one (four) mouth patent application scope! Touch panel coordinate positioning system , complex: ^ signal amplification module, addition module, subtraction module and division die rental system constitute a standard positioning circuit., 3 0. The application of the patent range of the 29th touch panel coordinate positioning system, the road The first and second coordinate signals can be input to the circuit connected to the coordinate positioning circuit for correction. 311. The touch panel coordinate positioning system of claim 1 of the patent scope, The first coordinate signal is a 8163 30 1253584 x-axis coordinate information indicating a specific position on the touch panel. 32. The touch panel coordinate positioning system of claim 1, wherein the second coordinate signal is Indicates the Y-axis coordinate information of a specific position on the touch panel. 31 18163