TW201716964A - Touch sensitive system and apparatus and method for measuring signals of touch sensitive screen - Google Patents

Abstract

The present invention provides an apparatus for measuring signals of touch sensitive screen, which comprises multiple conductive strips including multiple parallel driving strips and multiple parallel sensing strips. Multiple intersecting areas are located at the intersections of these multiple driving and sensing strips. The apparatus comprises a driving circuit and a sensing circuit. The driving circuit sequentially provides a first driving signal and a second driving signal to a first set of the driving strips and a second set of the driving strips, respectively. The sensing circuit sequentially senses a first signal and a second signal of at least one sensing strips corresponding to the first driving signal and the second driving signal, respectively. The time duration of the first driving signal is different from the time duration of the second driving signal. There are multiple intervals laid inbetween the multiple conductive strips. At least two neighboring intervals are different.

Description

Signal measurement device and method for touch system and touch screen

The present invention relates to touch screens, and more particularly to techniques for controlling parameters of front end modules to level the touch screen.

The touch panel or the touch screen is already one of the main input and output devices of modern electronic devices. In the present application, the term touch screen is used uniformly to indicate a touch panel that is not displayed or a touch screen that is displayed. The capacitive touch screen is a capacitive coupling between the human body and the human body, causing a change in the detection signal to determine the position of the human body on the capacitive touch screen. When the human body touches, the noise of the environment in which the human body is located is also injected with the capacitive coupling between the human body and the capacitive touch screen, and also changes the detection signal. Since the noise is constantly changing, it is not easy to be predicted. When the noise is relatively small, it is easy to make no judgment or touch the positional deviation.

In addition, since the signal passes through some load circuit, such as capacitive coupling, the phase difference between the signal received by the detecting strip and the signal supplied to the driving strip is generated. When the periods of the driving signals are the same, different phase differences indicate that the signal delays are received at different times. If the phase difference is directly ignored, the starting phase of the signal measurement is different and different results are generated. If the results of the measurements corresponding to different conductive strips are very different, it will be difficult to determine the correct position.

In addition, the resistance of the resistor-capacitor circuit through which the driving signal passes may be different with respect to different driving strips, which may cause the image obtained by the touch screen to be high or low during mutual capacitance detection, which is not conducive to detection.

It can be seen that the above prior art obviously has inconveniences and defects, and needs to be further improved. In order to solve the above problems, the relevant manufacturers do not bother to find a solution, but the design that has not been applied for a long time has been developed, and the general products and methods have no suitable structure and methods to solve the above problems. Obviously it is an issue that the relevant industry is anxious to solve. Therefore, how to create a new technology is one of the current important research and development topics, and it has become the goal that the industry needs to improve.

In an embodiment of the invention, a signal measuring device for a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. The driving time of the first driving signal is different from the driving time of the second driving signal, and at least two adjacent spacings of the plurality of spacings between the plurality of conductive strips are different.

In another embodiment of the present invention, a signal measurement method of a touch screen is provided. The touch screen described above comprises a plurality of driving conductive strips arranged in parallel and a plurality of detections arranged in parallel A plurality of conductive strips composed of conductive strips. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein a driving time of the first driving signal is different from the second driving signal The driving time, at least two of the plurality of spacings between the plurality of conductive strips are different.

In an embodiment of the invention, a signal measuring device for a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. At least one of the following conditions or any combination thereof is established: the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, and the variable resistor is generated when the detecting circuit generates the first signal When the detecting circuit generates the second signal, the variable resistor is set to a second resistance value, and the first resistance value is different from the second resistance value; The measuring circuit generates the first signal by using a first detection time length, and the detecting circuit generates the second signal by using a second detection time length, wherein the first detection time length is different from the second Detecting a length of time; the detecting circuit is connected to at least one detecting conductive strip via an amplifier, and when the detecting circuit generates the first signal, the amplifier is set to a first a magnification value, when the detecting circuit generates the second signal, the amplifier is set to a second magnification value, the first magnification value is different from the second magnification value; the detecting circuit passes a first Generating the first signal after delaying the phase difference, the detecting circuit generates the second signal after a second delay phase difference, wherein the first delay phase difference is different from the second delay phase difference; a potential of the driving signal is different from a potential of the second driving signal; a first driving timing point for providing the first driving signal is different from a second driving timing point for providing the second driving signal; and the first The driving time of the driving signal is different from the driving time of the second driving signal, wherein at least two adjacent spacings of the plurality of spacings between the plurality of conductive strips are different.

In another embodiment of the present invention, a signal measurement method of a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein at least one of the following conditions or any combination thereof is established: the detecting circuit Connected to the at least one detecting conductive strip via a variable resistor, wherein the detecting circuit generates the first signal, the variable resistor is set to a first resistance value, and the detecting circuit generates the second signal When the variable resistor is set to a second resistance value, the first resistance value is different from the second resistance value; the detecting circuit generates the first signal by using a first detection time length, The detecting circuit generates the second signal by using a second detecting time length, wherein the first detecting time length is different from the second detecting time length; the detecting circuit is connected to at least one detective via an amplifier Measuring the conductive strip, Said detecting circuit generates the first signal The amplifier is set to a first magnification value, and when the detecting circuit generates the second signal, the amplifier is set to a second magnification value, and the first magnification value is different from the second magnification value; The detecting circuit generates the first signal after a first delay phase difference, and the detecting circuit generates the second signal after a second delay phase difference, wherein the first delay phase difference is different from the first a delay phase difference; a potential of the first driving signal is different from a potential of the second driving signal; a first driving timing point for providing the first driving signal is different from a second providing a second driving signal Driving a timing point; and driving time of the first driving signal is different from driving time of the second driving signal, wherein at least two adjacent spacings of the plurality of spacings between the plurality of conductive strips are different.

In an embodiment of the invention, a touch system is provided, comprising the above touch screen and signal measuring device.

11‧‧‧ clock circuit

12‧‧‧ Pulse width adjustment circuit

131‧‧‧Drive Switch

132‧‧‧Detection switch

141‧‧‧Drive selection circuit

142‧‧‧Detection selection circuit

151‧‧‧ drive electrodes

152‧‧‧Detection electrode

16‧‧‧Variable resistor

17‧‧‧Amplification circuit

18‧‧‧Measurement circuit

19‧‧‧External conductive objects

41‧‧‧Drive circuit

42‧‧‧Detection circuit

43‧‧‧Storage circuit

44‧‧‧ Frequency setting

45‧‧‧Control circuit

51‧‧‧Complete image

52‧‧‧Single-electrode-driven 壹 dimensional sensing information

62‧‧‧Two-electrode driven 壹 dimensional sensing information

61‧‧‧Retracted image

71‧‧‧Extended image

721‧‧‧1st single-electrode driven 壹 dimensional sensing information

722‧‧‧Second-side single-electrode driven 壹 dimensional sensing information

1310‧‧‧Control Module

1340‧‧‧ Front End Module

1341‧‧‧Drive Module

1342‧‧‧Detection module

1500‧‧‧ touch screen

1510, 1510a~1510k‧‧‧ first electrode

1590, 1590ab~1590kl‧‧‧ spacing

1600‧‧‧ touch screen

1610, 1610a, 1610z‧‧‧ first electrode

1702, 1704, 1706‧‧‧ position

1710, 1710a~1710d‧‧‧ first electrode

1712‧‧‧Electrical sheet

1722‧‧‧Conductor

1724‧‧‧Conductor

1732‧‧‧Conductor

1734‧‧‧Conductor

1810, 1810a~1810d‧‧‧ first electrode

1820, 1820a~1820d‧‧‧Second electrode S drive signal

1 and FIG. 4 are schematic diagrams of a capacitive touch screen and a control circuit thereof according to the present invention; FIG. 2A is a schematic diagram of a single-electrode driving mode; FIG. 2B and FIG. 2C are schematic diagrams of a two-electrode driving mode; FIG. 3A and FIG. FIG. 5 is a schematic diagram of generating a complete image; FIG. 6 is a schematic diagram of generating a retracted image; FIG. 7A and FIG. 7B are schematic diagrams of generating an expanded image; FIG. 8 is a schematic diagram of a method for detecting a capacitive touch screen; FIG. A schematic diagram of a process for generating an expanded image according to the present invention; FIG. 9A and FIG. 9B are schematic diagrams showing different phase differences of driving signals via different driving conductive strips; 10 and FIG. 11 are schematic flowcharts of a signal measurement method of a touch screen according to a first embodiment of the present invention; FIG. 12 is a flow chart of a signal measurement method of another touch screen according to the present invention; FIG. 14 is a schematic diagram of a signal measurement method of a touch screen according to an embodiment of the invention; FIG. 15 is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present invention; FIG. 17 is a schematic diagram of a partial electrode structure of a touch screen according to an embodiment of the present application; FIG. 18 is a partial electrode structure of a touch screen according to an embodiment of the present application; A schematic diagram.

The invention will be described in detail below with some embodiments. However, the invention may be applied to other embodiments in addition to the disclosed embodiments. The scope of the present invention is not limited by the embodiments, which are subject to the scope of the claims. To provide a clearer description and to enable those skilled in the art to understand the invention, the various parts of the drawings are not drawn according to their relative dimensions, and the ratio of certain dimensions to other related dimensions will be highlighted. The exaggerated and irrelevant details are not completely drawn to illustrate the simplicity of the illustration.

Capacitive touch screens are susceptible to noise interference, especially from the human body that touches the touch screen. The invention adopts an adaptive driving and/or detecting method to achieve the purpose of reducing noise interference.

In a capacitive touch screen, a plurality of electrodes arranged longitudinally and laterally are used to detect the position of the touch, wherein the power consumption is positively correlated with the number of electrodes driven at the same time and the voltage of the driving. When performing touch detection, noise may be transmitted to the capacitive touch with the conductor of the touch Touching the screen makes the signal-to-noise ratio (S/N ratio) worse, which is easy to cause misjudgment and positional deviation of the touch. In other words, the signal-to-noise ratio changes dynamically with the object being touched and the environment in which it is located.

1 is a schematic diagram of a capacitive touch screen and a control circuit thereof, including a clock circuit 11, a pulse width modulation circuit 12, a driving switch 131, a detecting switch 132, and a driving selection. The circuit 141, a detection selection circuit 142, at least one driving electrode 151, at least one detecting electrode 152, a variable resistor 16, an amplifying circuit 17, and a measuring circuit 18. The capacitive touch screen may include a plurality of driving electrodes 151 and a plurality of detecting electrodes 152, and the driving electrodes 151 and the detecting electrodes 152 overlap at a plurality of overlapping portions.

The clock circuit 11 provides a clock signal for providing the entire system according to an operating frequency, and the pulse width modulation circuit 12 provides a pulse width modulation signal according to the clock signal and a pulse width modulation parameter to drive the driving electrode. 151. The drive switch 131 controls the driving of the drive electrode 151, and at least one drive electrode 151 is selected by the drive selection circuit 141. In addition, the detection switch 132 controls the electrical coupling between the drive electrode and the measurement circuit 18. When the driving switch 131 is on, the detecting switch 132 is off, and the pulse width modulation signal is supplied to the driving electrode 151 coupled by the driving selection circuit 141 via the driving selection circuit 141, wherein the driving electrode 151 can be There are a plurality of strips, and the selected driving electrodes 151 may be one, two, or a plurality of the driving electrodes 151. When the driving electrode 151 is driven by the pulse width modulation signal, the overlapping of the detecting electrode 152 and the driven driving electrode 151 overlaps, and each detecting electrode 152 is capacitive with the driving electrode 151. An input signal is provided when coupled. The variable resistor 16 provides an impedance according to a resistance parameter, and the input signal is supplied to the detection selection circuit 142 via the variable resistor 16. The detection selection circuit 142 selects one, two, and three of the plurality of detection electrodes 152. A plurality of or all of the detecting electrodes 152 are coupled to the amplifying circuit 17, and the input signals are based on a gain parameter via the amplifying circuit 17. It is then supplied to the measurement circuit 18. The measurement circuit 18 detects the input signal according to the pulse width modulation signal and the pulse signal. The measurement circuit 18 can sample the detection signal according to at least one phase according to a phase parameter. For example, the measurement circuit 18 can have at least An integrating circuit, each integrating circuit integrating an input signal of the input signal in at least one phase according to a phase parameter to measure a size of the input signal. In an example of the present invention, each of the integrating circuits may further integrate the signal difference of the pair of input signals in the input signal according to the phase parameter, or respectively according to the phase parameter, and at least one phase according to the phase parameter respectively. Integrating the difference in signal differences of the two pairs of input signals in the input signal. In addition, the measurement circuit 18 can also include at least one analog-to-digital circuit (ADC) to convert the result detected by the integration circuit into a digital signal. In addition, the ordinary skill in the art can be inferred that the input signal can be first amplified by the amplifying circuit 17 and then supplied to the measuring circuit 18 by the detecting and selecting circuit 142, which is not limited by the present invention.

In the present invention, the capacitive touch screen has at least two driving modes, which are divided into a most power-saving single-electrode driving mode, a two-electrode driving mode, and have at least one driving potential. Each of the drive modes has at least one operating frequency corresponding to different drive potentials, each of which corresponds to a set of parameters, and each of the drive modes represents a different degree of power consumption corresponding to a different drive potential.

The electrode of the capacitive touch screen can be divided into a plurality of driving electrodes 151 and a plurality of detecting electrodes 152, and the driving electrodes 151 and the detecting electrodes 152 overlap at a plurality of intersections. Referring to FIG. 2A, in the single-electrode driving mode, one driving electrode 151 is driven at a time, that is, only one driving electrode 151 is supplied with the driving signal S at the same time, and when any driving electrode 151 is driven, all detecting electrodes are detected. 152 signal to produce a dimensional sense News. Accordingly, after driving all of the driving electrodes 151, the pupil dimensional sensing information corresponding to each of the driving electrodes 151 can be obtained to constitute a complete image with respect to all the overlapping portions.

Referring to FIGS. 2B and 2C, in the two-electrode driving mode, adjacent pairs of driving electrodes 151 are driven at a time. In other words, the n driving electrodes 151 are driven a total of n-1 times, and when any pair of driving electrodes 151 are driven, the signals of all the detecting electrodes 152 are detected to generate a dimensional sensing information. For example, first, as shown in FIG. 2B, a driving signal S is simultaneously supplied to the first pair of driving electrodes 151, and if there are five, it is driven four times. Next, as shown in FIG. 2C, the driving signal S is simultaneously supplied to the second pair of driving electrodes 151, and so on. Accordingly, after driving each pair of driving electrodes 151 (total n-1 pairs), the 壹 dimensional sensing information corresponding to each pair of driving electrodes 151 can be obtained to form a retracted image with respect to the complete image. The number of pixels in the indented image is less than the number of pixels in the full image. In another example of the present invention, the two-electrode driving mode further includes performing single-electrode driving on the driving electrodes 151 on both sides, and detecting the signals of all the detecting electrodes 152 to generate signals when the single driving electrodes 151 are driven on either side. A dimension sensing information is provided to provide two additional dimensions of sensing information, and an inflated image to form an expanded image. For example, the 壹 dimensional sensing information corresponding to the two sides is respectively placed on both sides of the retracted image to form an expanded image.

A person having ordinary knowledge in the art can infer that the present invention can further include a three-electrode driving mode, a four-electrode driving mode, and the like, and details are not described herein again.

The aforementioned driving potential may include, but is not limited to, at least two driving potentials, such as a low driving potential and a high driving potential, and a higher driving potential has a higher signal to noise ratio.

According to the foregoing, in the single electrode driving mode, a complete image can be obtained, and in the two electrode driving mode, a retracted image or an expanded image can be obtained. The full image, the inner thumbnail or the expanded image may be before the external conductive object 19 approaches or touches the capacitive touch screen and the capacitor When the touch screen is obtained, the amount of change of each pixel is generated to determine the position of the external conductive object 19. Wherein, the external conductive object 19 may be one or more. As described above, when the external conductive object 19 approaches or touches the capacitive touch screen, or is capacitively coupled with the driving electrode 151 and the detecting electrode 152, noise interference occurs even when the driving electrode 151 is not driven. The external conductive object 19 may also be capacitively coupled to the drive electrode 151 and the detection electrode 152. In addition, noise may also interfere with other channels.

Accordingly, in an example of the present invention, when the noise detection process is performed, the driving switch 131 is turned off, and the detecting switch 132 is turned on. At this time, the measuring circuit can generate a signal according to the signal of the detecting electrode 152. The 壹 dimension sensing information of the noise detection is used to determine whether the noise interference is within the allowable range. For example, whether the value of the dimensional sensing information of the noise detection exceeds a threshold value, or whether the sum or average of all the values of the dimensional sensing information of the noise detection exceeds a threshold. Limits to determine if the noise interference is within the acceptable range. A person skilled in the art can infer other ways of determining whether the noise interference is within the allowable range by using the 壹-dimensional sensing information of the noise detection, and the present invention does not describe it.

The noise detection program may be performed when the system is started or each time the complete image, the retracted image or the expanded image is acquired, or the complete image, the retracted image or the expanded image may be obtained periodically or repeatedly. When performing, or detecting that an external conductive object is approaching or touching, a person skilled in the art can infer other appropriate timings for performing the noise detection procedure, and the present invention is not limited thereto.

The present invention further provides a frequency changing procedure for performing frequency switching when it is determined that the noise interference exceeds the allowable range. The measurement circuit is provided with a plurality of sets of frequency settings, which may be stored in a memory or other storage medium to provide a measurement circuit for selection in a frequency conversion program, and based on the selected The frequency controls the clock signal of the clock circuit 11. The frequency changing procedure may be to select an appropriate frequency setting one by one in the frequency setting, for example, selecting one of the frequency settings one by one and performing a noise detection procedure until the noise interference is detected to be within an allowable range. The frequency changing procedure may also be to select an optimum frequency setting one by one in the frequency setting. For example, the frequency setting is selected one by one and the noise detection process is performed to detect the frequency setting in which the noise interference is the smallest, for example, the maximum value of the maximum size sensing information detected by the noise detection is the minimum frequency setting. , or the sum or average of all values of the 壹 dimensional sensing information of the noise detection is the minimum frequency setting.

The frequency setting corresponds to, but not limited to, a driving mode, a frequency, and a parameter group. The parameter group may be a group including, but not limited to, the following set of parameters: the foregoing resistance parameter, the aforementioned gain parameter, the aforementioned phase parameter, and the aforementioned pulse width modulation parameter, and those skilled in the art having ordinary knowledge may infer that other Capacitive touch screen and related parameters of its control circuit.

The frequency setting may be as shown in the following Table 1, including a plurality of driving potentials. The following is exemplified by the first driving potential and the second driving potential. Those having ordinary knowledge in the art may infer that there may be more than three types of driving. Potential. Each of the driving potentials may have a plurality of driving modes, including but not limited to a group selected from the group consisting of a single electrode driving mode, a two-electrode driving mode, a three-electrode driving mode, a four-electrode driving mode, and the like. Each of the drive modes corresponding to each of the drive potentials has a plurality of frequencies, each of which corresponds to one of the aforementioned parameter sets. Those of ordinary skill in the art can deduce that the frequency of each of the driving modes corresponding to each driving potential may be completely different or partially the same, and the present invention is not limited thereto.

Table 1

According to the above, the present invention provides a method for detecting a capacitive touch screen, please refer to FIG. 3A. First, as shown in step 310, a plurality of frequency settings are sequentially stored according to the power consumption, each frequency setting is a driving mode corresponding to a driving potential, and each frequency setting has a frequency and a parameter group, wherein the driving potential There is at least one. Next, as step Step 320, initializing the setting of the measuring circuit according to the parameter set of one of the frequency settings, and as shown in step 330, detecting a parameter from the detecting electrode according to a parameter group of the measuring circuit Signaling and generating a dimensional sensing information based on the signal from the detecting electrode. Then, as shown in step 340, it is determined whether the interference of a noise exceeds a allowable range according to the sensing information of the UI dimension. Then, as shown in step 350, when the interference of the noise exceeds the allowable range, the operating frequency and the measuring circuit are respectively changed according to the frequency and the parameter group of one of the frequency settings. After the setting, the UI dimension sensing information is generated, and according to the UI dimension sensing information, it is determined whether the interference of the noise exceeds the allowable range until the interference of the noise does not exceed the allowable range of the process. Alternatively, as shown in step 360 of FIG. 3B, when the interference of the noise exceeds the allowable range, the operating frequency and the setting of the measuring circuit are respectively changed according to the frequency and the parameter group set according to each frequency. And generating the UI dimension sensing information, and determining interference of the noise according to the UI dimension sensing information, and changing the operating frequency by a frequency set by a frequency that is lowest by the noise interference and a parameter group respectively And the setting of the measuring circuit.

For example, as shown in FIG. 4, a detecting device for detecting a capacitive touch screen according to the present invention includes: a storage circuit 43, a driving circuit 41, and a detecting circuit 42. As shown in the foregoing step 310, the storage circuit 43 includes a plurality of frequency settings 44, which are sequentially stored according to the power consumption size. The storage circuit 43 can be a circuit, a memory or any storage medium capable of storing electromagnetic recordings. In an example of the present invention, the frequency setting 44 may be configured in a look-up manner. In addition, the frequency setting 44 may also store power consumption parameters.

The driving circuit 41 may be an integration of a plurality of circuits, and may include but is not limited to the foregoing clock circuit 11, pulse width modulation circuit 12, driving switch 131, detecting switch 132, and driving selection. Circuit 141 is selected. The circuit listed in this example is convenient for the description of the present invention, and the driving circuit 41 may include only a part of the circuit or add more circuits, and the invention is not limited thereto. The driving circuit 41 is configured to provide a driving signal to at least one driving electrode 151 of a capacitive touch screen according to an operating frequency. The capacitive touch screen includes a plurality of driving electrodes 151 and a plurality of detecting electrodes 152, and the driving electrodes 151 and the detecting electrode 152 overlap at a plurality of overlaps.

The detection circuit 42 can be an integration of a plurality of circuits, and can include, but is not limited to, the aforementioned measurement circuit 18, the amplification circuit 17, the detection selection circuit 142, and even the variable resistor 16. The circuit listed in this example is convenient for the description of the present invention. The detecting circuit 42 may include only a part of the circuit or add more circuits, and the invention is not limited thereto. In addition, the detecting circuit 42 further includes performing the foregoing steps 320 to 340, and performing step 350 or step 360. In the example of FIG. 3B, the frequency setting may be stored in order not according to the power consumption.

As described earlier, the UI dimension sensing information for determining whether the interference of the noise exceeds the allowable range is generated when the driving signal is not supplied to the driving electrode 151. For example, when the drive switch 131 is turned off and the detection switch 132 is turned on.

In an example of the present invention, the at least one driving potential has a plurality of driving modes, and the driving mode includes a single-electrode driving mode and a two-electrode driving mode, wherein the driving signal simultaneously provides only the driving in the single-electrode driving mode One of the electrodes, and in the two-electrode drive mode, the drive signal provides only one pair of the drive electrodes at the same time. The power consumption of the single-electrode driving mode is smaller than the power consumption of the two-electrode driving mode. In addition, in the single-electrode driving type, the detecting circuit respectively generates the 壹-dimensional sensing information when each driving electrode is supplied with a driving signal to form a complete image, and wherein the two electrodes are In the driving mode, the detecting circuit is separately generated when each pair of driving electrodes is supplied with a driving signal The 壹 dimension senses information to form a retracted image, wherein the pixels of the retracted image are smaller than the pixels of the complete image. In addition, the detecting circuit in the two-electrode driving mode may further comprise driving the two electrodes separately, and when a single driving electrode on either side is driven, detecting signals of all detecting electrodes to respectively generate the 壹 dimensional sensing Information that two two-dimensional sensing information generated by driving the electrodes on both sides are placed on both sides of the retracted image to form an expanded image, and the pixels of the expanded image are larger than the The pixels of the full image.

In another example of the present invention, the driving potential includes a first driving potential and a second driving potential, wherein the single-electrode driving mode corresponding to the first driving potential generates power consumption of the complete image The size > the two-electrode driving mode corresponding to the first driving potential generates a power consumption amount of the retracted image > the single-electrode driving mode corresponding to the second driving potential generates a consumption of the complete image Electric size.

In another example of the present invention, the driving potential includes a first driving potential and a second driving potential, wherein the single-electrode driving mode corresponding to the first driving potential generates power consumption of the complete image The size > the single electrode driving mode corresponding to the second driving potential produces a power consumption of the complete image.

In addition, in an example of the present invention, the signals of each detecting electrode are respectively supplied to the detecting circuit through a variable resistor, and the detecting circuit is a parameter group according to one of the frequency settings. The impedance of the variable resistor is set. In addition, the signal of the detecting electrode is detected after being amplified by at least one amplifier circuit, and the detecting circuit sets the gain of the amplifying circuit according to a parameter group of one of the frequency settings. Furthermore, the drive signal is generated based on a parameter set of one of the frequency settings.

In an example of the present invention, each value of the UI dimension sensing information is separately The signal is generated according to the signal of the detecting electrode at a set period, wherein the set period is set according to a parameter group of one of the frequency settings. In another example of the present invention, each value of the UI dimension sensing information is generated according to a signal of the detecting electrode by at least one set phase, wherein the set phase is according to the frequency. Set one of the parameter groups to set.

In addition, the foregoing driving circuit 41, detecting circuit 42 and storage circuit 43 may be controlled by a control circuit 45. The control circuit 45 can be a programmable processor or other control circuit, and the invention is not limited thereto.

Please refer to FIG. 5, which is a schematic diagram of a single electrode driving mode according to the present invention. The driving signal S is sequentially supplied to the first driving electrode, the second driving electrode, ... until the last driving electrode, and generates a single-electrode driving 壹 dimensional sensing information when each driving electrode is driven by the driving signal S 52. The single-electrode-driven 壹-dimensional sensing information 52 generated when each driving electrode is driven may constitute a complete image 51, and each value of the complete image 51 respectively corresponds to a change in capacitive coupling of one of the electrode intersections. .

Furthermore, each value of the complete image corresponds to the position of one of the overlaps, respectively. For example, the central positions of each of the driving electrodes respectively correspond to a first 壹 dimension coordinate, and the center of each of the detecting electrodes respectively corresponds to a second 壹 dimension coordinate. The first 壹 dimension coordinates may be one of a lateral (or horizontal, X-axis) coordinate and a longitudinal (or vertical, Y-axis) coordinate, and the second 壹 dimensional coordinate may be a lateral (or horizontal, X-axis) coordinate and longitudinal (or Vertical, Y-axis) Another of the coordinates. Each of the overlaps corresponds to a one-dimensional coordinate of the driving electrode and the detecting electrode overlapping at the overlapping, and the dimension of the dimension is composed of the first dimension and the second dimension, such as (first) Dimension coordinates, second dimension coordinates) or (second dimension coordinates, first dimension coordinates). In other words Each of the single-electrode-driven 壹-dimensional sensing information respectively corresponds to a first 壹 dimension coordinate at a center of one of the driving electrodes, wherein each value of the single-electrode-driven 壹 dimension sensing information (or each of the complete images) A value) respectively corresponds to a 贰 dimension coordinate formed by a first 壹 dimension coordinate at a center of one of the drive electrodes and a second 壹 dimension coordinate at a center of one of the detection electrodes. Similarly, each value of the complete image corresponds to a central position of one of the overlapping portions, that is, a first 壹 dimension coordinate corresponding to a center of one of the driving electrodes and a center of one of the detecting electrodes, respectively. The second dimension coordinates formed by the second dimension coordinates.

Please refer to FIG. 6, which is a schematic diagram of a two-electrode driving mode according to the present invention. The driving signal S is sequentially supplied to the first pair of driving electrodes, the second pair of driving electrodes, ... until the last pair of driving electrodes, and when each pair of driving electrodes is driven by the driving signal S, a two-electrode driving 壹 dimensional sense is generated Information 62. In other words, the N drive electrodes can constitute N-1 pairs (multiple pairs) of drive electrodes. The two-electrode-driven 壹-dimensional sensing information 62 generated when each pair of driving electrodes is driven may constitute a retracted image 61. The number of values (or pixels) of the retracted image 61 is less than the number of values (or pixels) of the full image 51. Relative to the complete image, each of the two-electrode-driven 壹-dimensional sensing information of the retracted image corresponds to a first 壹 dimension coordinate at a central position between the pair of driving electrodes, and each value corresponds to the pair of driving electrodes respectively A first dimension coordinate of the central location and a second dimension coordinate formed by a second dimension coordinate at the center of one of the detecting electrodes. In other words, each value of the indented image corresponds to a position between the centers of the pair of overlaps, that is, a first dimension coordinate corresponding to a central position between the pair of driving electrodes (or one of the plurality of pairs of driving electrodes), respectively. An 贰 dimension coordinate formed by a second 壹 dimension coordinate in the center of one of the detecting electrodes.

Please refer to FIG. 7A, which is a schematic diagram of performing first-side single-electrode driving in the two-electrode driving mode according to the present invention. The drive signal S is provided to the drive closest to the first side of the capacitive touch screen The electrode is moved, and the first side-by-side dimension sensing information 721 of the single-electrode driving is generated when the driving electrode 151 closest to the first side of the capacitive touch screen is driven by the driving signal S. Referring again to FIG. 7B, a schematic diagram of the second side single electrode driving in the two-electrode driving mode according to the present invention is shown. The driving signal S is supplied to the driving electrode 151 closest to the second side of the capacitive touch screen, and generates a second side 壹 dimension sense of the single electrode driving when the driving electrode 151 closest to the second side of the capacitive touch screen is driven by the driving signal S Information 722. The single-electrode-driven 壹-dimensional sensing information 721 and 722 generated when the driving electrodes of the first side and the second side are driven are respectively placed outside the first side and the second side of the retracted image 61 to form an expanded image. 71. The number of values (or pixels) of the expanded image 71 is greater than the number of values (or pixels) of the full image 51. In an example of the present invention, the first side-side dimension sensing information 721 of the single-electrode driving is generated first, and then the indented image 61 is generated, and then the second-side-side dimension sensing information 722 of the single-electrode driving is generated to form An external expansion image 71. In another example of the present invention, the retracted image 61 is first generated, and the first side and second side slanting sensing information 721 and 722 of the single electrode driving are respectively generated to form an expanded image 71.

In other words, the expanded image is composed of the first side 壹 dimension sensing information driven by the single electrode, the retracted image and the second side 壹 dimension sensing information driven by the single electrode. Since the value of the retracted image 61 is a two-electrode drive, the average size will be greater than the average size of the values of the first side and second side 壹 dimension images of the single electrode drive. In an example of the present invention, the values of the first side and second side dimension sensing information 721 and 722 are scaled up and then placed outside the first side and the second side of the indented image 61, respectively. The ratio may be a preset multiple, and the preset multiple is greater than 1, or may be generated according to a ratio between a value of the two-electrode-driven 壹-dimensional sensing information and a value of the single-electrode-driven 壹-dimensional sensing information. For example, the ratio of the sum (or average) of all values of the first dimension sensing information 721 of the first side to the sum (or average) of all values of the pupil dimension sensing information 62 of the adjacent first side of the indented image. For example, the value of the first side 壹 dimension sensing information 721 is enlarged outside the scale and placed outside the first side of the retracted image 61. Similarly, the sum (or average) of all values of the second dimension sensing information 722 of the second side and the sum (or average) of all values of the second dimension sensing information 62 of the adjacent second side of the indented image, second The value of the side squint sensing information 722 is placed outside the second side of the retracted image 61 after being scaled up. For another example, the aforementioned ratio may be a ratio of the sum (or average) of all values of the indented image 61 to the sum (or average) of all values of the first and second sides of the pupil dimensional sensing information 721 and 722.

In the single-electrode driving mode, each value (or pixel) of the complete image corresponds to a 贰 dimension position (or coordinate) at a stack, which is a first 壹 dimension position corresponding to the driving electrodes stacked at the overlap (or coordinates) consisting of a second dimension position (or coordinate) corresponding to the detection electrode, such as (first dimension position, second dimension position) or (second dimension position, first dimension position) . A single external conductive object may be capacitively coupled to one or more overlaps, and a capacitive coupling change at the intersection with the external conductive object may cause a change in capacitive coupling, corresponding to a corresponding value in the complete image, ie, the reaction is external The conductive object corresponds to the corresponding value in the complete image. Therefore, the centroid position (贰 dimension) of the external conductive object can be calculated according to the corresponding value of the external conductive object corresponding to the 贰 dimension coordinate in the complete image.

According to an example of the present invention, in the single-electrode driving mode, the corresponding pupil position of each of the electrodes (the driving electrode and the detecting electrode) is the position of the center of the electrode. According to another example of the present invention, in the two-electrode driving mode, the position of the 壹 dimension of each pair of electrodes (the driving electrode and the detecting electrode) is the position between the two electrodes.

In the retracted image, the first 壹 dimension sensing information corresponds to a central position of the first pair of driving electrodes, that is, a first 壹 dimension position between the first and second driving electrodes (the first pair of driving electrodes) . If the centroid position is simply calculated, only the first pair of drive electrodes can be calculated. The position between the center and the center of the last pair of driving electrodes, the range of the position calculated according to the retracted image lacks the range between the central position of the first pair of driving electrodes (the first 壹 dimension position in the center) and the central position of the first driving electrode And the range between the center position of the last pair of drive electrodes and the center position of the last drive electrode.

The first side and the second side 感 dimension sensing information correspond to the positions of the first and last driving electrodes respectively in the expanded image, so that the range ratio of the position calculated according to the expanded image is The range of positions calculated from the retracted image increases the range between the center position of the first pair of driving electrodes (the first 壹 dimension position in the center) and the central position of the first driving electrode, and the center position and the last position of the last pair of driving electrodes The range between the central positions of the drive electrodes. In other words, the range of positions calculated from the expanded image includes the range of positions calculated from the complete image.

Similarly, the aforementioned two-electrode driving mode can be expanded to a multi-electrode driving mode, that is, a plurality of driving electrodes are simultaneously driven. In other words, the drive signal is provided to a plurality of (all) drive electrodes of a group of drive electrodes simultaneously, for example, a set of drive electrodes has two, three or four drive electrodes. The multi-electrode driving mode includes the aforementioned two-electrode driving mode, and does not include the aforementioned single-electrode driving mode.

Please refer to FIG. 8 , which illustrates a method for detecting a capacitive touch screen according to the present invention. As shown in step 810, a capacitive touch screen having a plurality of driving electrodes and a plurality of detecting electrodes arranged in parallel is provided, wherein the driving electrodes and the detecting electrodes overlap at a plurality of overlaps. For example, the driving electrode 151 and the detecting electrode 152 described above. Next, as shown in step 820, a driving signal is supplied to one of the driving electrodes and one of the driving electrodes to drive the electrodes in the single electrode driving mode and the multi-electrode driving mode, respectively. That is, the drive in a unipolar drive mode The motion signal is supplied to only one of the drive electrodes at a time, and in a multi-electrode drive mode, the drive signal is a set of drive electrodes that are simultaneously supplied with the drive electrodes, except for the last N drive electrodes. Each of the driving electrodes and the two driving electrodes adjacent to the rear constitute a group of driving electrodes that are simultaneously driven, and the number of driving electrodes of N being a group of driving electrodes is reduced by one. The supply of the drive signal may be provided by the aforementioned drive circuit 41. Then, as shown in step 830, each time the driving signal is provided, the sensing information is acquired by the detecting electrode to obtain a plurality of multi-electrode driving 壹 dimensional sensing in the multi-electrode driving mode. Information and 壹 dimensional sensing information of the first side and the second side single electrode driving in the single electrode driving mode. For example, in the multi-electrode driving mode, a multi-electrode driven 壹 dimensional sensing information is respectively obtained when each set of driving electrodes is supplied with a driving signal. For example, in the single-electrode driving mode, a first-side single-electrode-driven 壹-dimensional sensing information and a second-side single-electrode-driven 壹 are respectively obtained when the first driving electrode and the last driving electrode provide a driving signal. Dimensional sensing information. The acquisition of the dimensional sensing information may be obtained by the detection circuit 42 described above. The 壹 dimensional sensing information includes the multi-electrode driven 壹 dimensional sensing information (inward reduced image) and the first side and the second side single electrode driven 壹 dimensional sensing information. Then, as shown in step 840, the first-dimensional single-electrode-driven 壹-dimensional sensing information, all multi-electrode-driven 壹-dimensional sensing information, and the second-side single-electrode-driven 壹-dimensional sensing information are sequentially displayed. Generate an image (extended image). Step 840 can be accomplished by the aforementioned control circuitry.

As described earlier, the potential of the driving signal in the single-electrode driving mode is not necessarily the same as the potential of the driving signal in the multi-electrode driving mode, and may be the same or different. For example, the single electrode driving is driven by a large first alternating current potential, and the ratio of the first alternating current potential to the second alternating current potential is a predetermined ratio with respect to the second alternating current potential driven by the multi-electrode. In addition, step 840 is to sense all values of the information according to the first dimension and the second side single electrode driving The images are generated by multiplying the same or different preset ratios respectively. Further, the frequency of the drive signal in the single-electrode drive mode is different from the frequency of the drive signal in the multi-electrode drive mode.

The number of driving electrodes of a group of driving electrodes may be two, three, or even more, and the present invention is not limited thereto. In a preferred mode of the invention, the number of drive electrodes for a set of drive electrodes is two. When the number of driving electrodes of one set of driving electrodes is two, each of the driving electrodes respectively corresponds to a second dimension coordinate, wherein each of the plurality of (dual) electrodes drives the 壹 dimension sensing information corresponding to one of the driving electrodes The first 壹 dimension coordinates of the center between the driving electrodes, and the first side and the second side single electrode driving 壹 dimension sensing information respectively correspond to the first 壹 dimension coordinates of the first strip and the last driving electrode.

Similarly, when the number of driving electrodes of a group of driving electrodes is multiple (two or more), each driving electrode respectively corresponds to a second dimensional coordinate, wherein each multi-electrode driven 壹 dimensional sensing information respectively corresponds to a first 壹 dimension coordinate centered between the two driving electrodes of the driving electrode, and the first side and the second side single electrode driving 壹 dimension sensing information respectively correspond to the first The first 壹 dimension coordinate with the last drive electrode.

In addition, each of the detecting electrodes respectively corresponds to a second 壹 dimension coordinate, and each value of each 壹 dimension sensing information respectively corresponds to a second 壹 dimension coordinate of one of the detecting electrodes.

Please refer to FIG. 9A and FIG. 9B , which are schematic diagrams for detecting that a conductive strip receives a capacitive coupling signal via a driving strip. Since the signal passes through some load circuit, such as capacitive coupling, the phase difference between the signal received by the detecting strip and the signal supplied to the driving strip is generated. For example, when the driving signal is supplied to the first driving conductive strip, the first signal detected by the conductive strip and the signal supplied to the driving strip will generate a first phase difference ,1, as shown in FIG. 9A, and driven. When the dynamic signal is supplied to the second driving conductive strip, the first signal detected by the conductive strip and the signal supplied to the driving strip will generate a second phase difference ψ2, as shown in FIG. 9B. In an embodiment of the invention, the phase difference may indicate the time when the signal passes through the load circuit, and may also indicate the time difference between the detection of the conductive strip receiving the capacitive coupling signal via the driving strip and the driving of the strip. Since the position of each driving strip is different, the phase difference of the same detecting strip for different driving strips is different.

The first phase difference ψ1 and the second phase difference ψ2 may differ depending on the RC circuit through which the drive signal passes. When the periods of the driving signals are the same, different phase differences indicate that the signal delays are received at different times. If the phase difference is directly ignored, the starting phase of the signal measurement is different and different results are generated. For example, suppose the phase difference is 0, and the signal is a sine wave, and the amplitude is A. When detecting signals at phases of 30 degrees, 90 degrees, 150 degrees, 210 degrees, 270 degrees, and 330 degrees, |1/2A|, |A|, |1/2A|, |-1/2A are obtained, respectively. |, |-A| and |-1/2A| signals. However, when the phase difference is 150 degrees, the phase of the measurement is deviated, so that when the phase is 180 degrees, 240 degrees, 300 degrees, 360 degrees, 420 degrees, and 480 degrees, the signals are respectively 0, - A, - A, 0, A and A signal.

From the foregoing example, it can be seen that the delay of the initial phase of the measurement due to the aforementioned phase difference causes the result of the signal measurement to be completely different, regardless of whether the driving signal is a sine wave or a square wave (such as PWM). The difference exists.

In addition, each time a driving signal is supplied, it may be provided to an adjacent plurality of driving conductive strips, wherein the driving conductive strips are sequentially arranged in parallel. In the preferred embodiment of the invention, two adjacent drive strips are provided, so that in one scan, n drive strips are provided in total. N-1 drive signals, each time providing a set of drive strips, for example, first to the first and second drive strips, and second to the second and third strips ,So on and so forth. As previously described, each time a drive signal is provided, the set of drive strips provided may be one, two or more strips, and the present invention does not limit the number of drive strips provided per drive signal. Each time the driving signal is provided, all the signals for detecting the measured strips can be combined into one dimensional sensing information, and all the dimensional sensing information in one scan can form a dimensional sensing information, which can be regarded as an image. .

Accordingly, in a first embodiment of the preferred mode of the present invention, different phase differences are used for different conductive strips to delay the detection signal. For example, a plurality of phase differences are first determined, and when each group of driving strips is supplied with a driving signal, the signals are measured according to each phase difference, and the phase difference according to the largest one of the measured signals is closest. The phase difference between the signal supplied to the front of the driving strip and the signal after the detecting strip is received is referred to as the closest phase difference in the following description. The measurement of the signal may be: selecting one of the detecting conductive strips to measure according to each phase difference, or selecting a plurality of or all detecting conductive strips to measure according to each phase difference, according to multiple or all The sum of the signals of the conductive strips is detected to determine the closest phase difference. According to the above, the closest phase difference of each set of conductive strips can be judged. In other words, when each set of conductive strips is supplied with a driving signal, all the detected conductive strips are delayed by the closest phase difference of the supplied driving signals. Make measurements.

In addition, the signal may not need to be measured according to all phase differences, and the signal may be measured according to a phase difference in the phase difference(s) until the measured signal is incremented and then decremented. Stop, where the phase difference based on the largest of the measured signals is the closest phase difference. In this way, an image with a larger signal can be obtained.

In addition, a set of the driving conductive strips may be first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips, and the closest phase difference of the reference conductive strips is first detected as a level phase. Poor, and then detect the phase difference of the non-reference drive strip closest to the leveling phase difference, called the most leveling phase difference. For example, a signal measured according to the leveling phase difference of the reference conductive strip is used as a leveling signal, and each phase difference of each set of non-reference driving strips is separately measured, and the measured signal is the most connected. The phase difference on which the leveling signal is applied is the leveling phase difference of the driving conductive strip to which the driving signal is supplied. In this way, the leveling phase difference of each group of driving strips can be determined, and the measurement of the post-delay signal can be performed according to the leveling phase difference of each group of driving strips, so that a relatively flat image, that is, a difference between signals in the image can be obtained. Very small. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal.

In the foregoing description, each time the drive signal is supplied, the same phase difference is used for all of the detected conductive strips, and those skilled in the art can infer that, each time a drive signal is supplied, each time A set of detecting conductive strips adopts respective closest phase difference or leveling phase difference. In other words, each time the driving signal is supplied, the signal is measured for each phase difference of each group of detecting strips to determine the closest phase difference or level difference.

In fact, in addition to using the phase difference to delay the measurement to obtain a larger or relatively flat image, it is also possible to obtain a relatively flat image with different magnification, impedance, and measurement time.

Accordingly, the present invention proposes a signal measurement method for a touch screen, as shown in FIG. As shown in step 1010, a touch screen is provided. The touch screen includes a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel, the driving strips and the The detecting conductive strips overlap in a plurality of overlapping regions. Additionally, as shown in step 1020, a delay phase difference for each or each set of drive strips is determined. Then, as shown in step 1030, a driving signal is sequentially supplied to one or a group of the driving conductive strips, and the driving conductive strips provided with the driving signals and the detecting conductive strips are mutually capacitively coupled. Next, as shown in step 1040, each time the drive signal is supplied, the signal of each detected combination of the supplied drive signals is measured after delaying the corresponding phase difference.

Accordingly, in the signal measuring device of the touch panel of the present invention, the aforementioned step 1030 may be implemented by the aforementioned driving circuit 41. Additionally, step 1040 can be implemented by the aforementioned detection circuit 42.

In an example of the invention, the retardation phase difference of each or each set of drive strips is selected from a plurality of predetermined phase differences, such as picking the aforementioned nearest phase difference. Each set of conductive strips refers to a plurality of conductive strips that are simultaneously supplied with drive signals during a plurality of driving operations, for example, by the drive selection circuit 141 of the aforementioned drive circuit 41. For example, one or a set of conductive strips of the drive strips are sequentially selected as selected strips, as implemented by drive circuitry 41. Next, the delayed phase difference of the selected conductive strips is selected from a plurality of predetermined phase differences. Wherein, when the driving signal is supplied to the selected conductive strip, the signal measured after delaying the delayed phase difference is greater than the signal detected after delaying other predetermined phase differences. For example, it is implemented by the detection circuit 42 described above, and the detected delay phase difference can be stored in the storage circuit 43.

In addition, the aforementioned leveling phase difference may also be selected. For example, one or a set of conductive strips of the drive strips are selected as reference strips, and other strips or other sets of strips are used as non-reference strips, as implemented by drive circuitry 41. Thereafter, a delay phase difference of the reference conductive strip is selected from a plurality of predetermined phase differences, wherein when the driving signal is supplied to the reference conductive strip, The signal detected after delaying the delay phase difference is greater than the signal detected after delaying other predetermined phase differences. The delay phase difference of the reference conductive strip is the aforementioned leveling phase difference. Next, the signal detected by delaying the delayed phase difference is used as a reference signal, and then one or a group of non-reference conductive strips of the non-reference conductive strip are sequentially selected as the selected conductive strip, and Determining a delay phase difference of the selected conductive strip from a plurality of predetermined phase differences, such as the most leveling phase difference described above, wherein the delayed phase difference is detected after the driving signal is supplied to the selected conductive strip The signal detected by the signal is closest to the reference signal compared to the signal delayed by other predetermined phase differences. The above may be implemented by the detection circuit 42.

In an example of the present invention, when the driving signal is supplied to the reference conductive strip or the selected conductive strip, the plurality of measured signals in the detecting conductive strip are detected by the detecting conductive strip One of the measured signals. In other words, the delay phase difference is selected based on the same signal that detects the conductive strip. In another example of the present invention, when the driving signal is supplied to the reference conductive strip or the selected conductive strip, the plurality of measured signals in the detecting conductive strip are detected by the detecting conductive At least two of the strips detect the sum of the signals measured by the strips. In other words, the delay phase difference is selected based on the sum of the signals of the same plurality of detecting conductive strips or all of the detecting conductive strips.

As previously described, there may be a corresponding delay phase difference for each or each set of overlapping regions of the driven conductive strip that overlap each of the detecting conductive strips. In the following description, each or each group of conductive strips is driven and each strip or each set of detecting strips is overlapped as a detection combination. In other words, the drive signal can be provided to one or more drive strips simultaneously, and the signal can also be measured by one or more sense strips. When the measurement generates a signal, the driving signal is supplied with one or more driving conductive strips and the measured one or more detecting conductive The bar is called a detection combination. For example, in a single drive or multiple drives, the signal value is detected by a conductive strip, or a difference is measured by two conductive strips, or a double difference is measured by three conductive strips. The difference is the difference between the signals of the two adjacent conductive strips, and the double difference is among the three adjacent conductive strips, and the difference between the signals of the first two conductive strips is subtracted from the difference between the signals of the two conductive strips. difference.

Accordingly, in another example of the present invention, a signal measurement method of a touch screen is shown in FIG. As shown in step 1110, a touch screen is provided. The touch screen includes a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel, the driving strips and the detecting conductive The strips overlap in multiple overlapping zones. In addition, as shown in step 1120, each or each group of conductive strips is driven and each strip or each set of detecting strips is overlapped as a detection combination, and as shown in step 1130, each detection is determined. A delayed phase difference of the combination. Thereafter, as shown in step 1140, a driving signal is sequentially supplied to one or a group of the driving conductive strips, and the driving conductive strips and overlapping detectors of the driving signals provided in the detecting combination of the driving signals are provided. The conductive strips are tested for mutual capacitive coupling. Next, as shown in step 1150, each time the drive signal is provided, the signal of each detected combination of the provided drive signals is measured after delaying the corresponding phase difference.

Accordingly, in a signal measuring apparatus of the present invention, step 1140 may be implemented by the aforementioned driving circuit 41, and step 1150 may be implemented by the aforementioned detecting circuit 42.

In an example of the present invention, the step 1130 may include: sequentially selecting one of the detection combinations as the selected detection combination, which may be implemented by the foregoing driving circuit 41; and by a plurality of predetermined phase differences Selecting a delay phase difference of the selected detection combination, wherein the signal after the delay phase difference is delayed when the driving signal is supplied to the selected detection combination The signal detected after being delayed by other predetermined phase differences may be implemented by the aforementioned detecting circuit 42.

In another example of the present invention, determining the delay phase difference for each detection combination may also be implemented as described below. Selecting one of the detection combinations as a reference detection combination, and other detection combinations as a non-reference detection combination, and sequentially selecting one of the non-reference detection combinations as the selected detection combination, which may be The aforementioned drive circuit 41 is implemented. In addition, a delay phase difference of the reference detection combination is selected from a plurality of predetermined phase differences, wherein when the driving signal is supplied to the reference detection combination, the signal detected after delaying the delay phase difference is greater than delaying other predetermined phases The signal detected after the difference is detected, and the signal detected by the reference detection combination delaying the delay phase difference is used as a reference signal. In addition, a delay phase difference of the selected detection combination is selected from a plurality of predetermined phase differences, wherein when the driving signal is supplied to the selected detection combination, the signal detected after delaying the delayed phase difference is compared with The signal detected after delaying other predetermined phase differences is closest to the reference signal. The above may be implemented by the detection circuit 42 described above.

In a first embodiment of the invention, the delay phase difference described above can be implemented using various delay circuits. For example, selecting one of a plurality of fixed delay lines, using a programmable digital delay element, or delaying certain clock signals is implemented. One of ordinary skill in the art will appreciate that many practices can be implemented and the present invention does not limit the implementation of delay phase differences.

In a second embodiment of the present invention, the signal is measured by a control circuit, and the signals of each group of detecting conductive strips are respectively measured through a variable resistor, and the control circuit is driven according to each group. The conductive strip determines the impedance of the variable resistor. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First set multiple Presetting the impedance, and detecting a signal detecting the conductive strip when the reference conductive strip (possibly one or more) is supplied with the driving signal, or detecting the sum of the signals of the plurality of or all detecting the conductive strip, as A leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset impedance that can cause the leveling signal to fall within the preset operating range can be used as the leveling impedance of the reference strip. Next, when each set of non-reference conductive strips is supplied with a driving signal value, the variable resistor is respectively adjusted according to each preset impedance, and the signal of the detecting strip is detected, or the plurality or all of the detecting strips are detected. The sum of the signals of the conductive strips is measured to compare the preset impedance of the most advanced leveling signal as a leveling impedance relative to the set of non-reference conductive strips to which the drive signal is supplied. In this way, the leveling impedance of each group of driving strips can be determined, and the impedance of the variable resistor can be adjusted according to the leveling impedance of each group of driving strips (adjusting the variable resistor to the leveling impedance), thereby obtaining a relatively flat image, that is, The difference between the signals in the image is small.

In the foregoing description, each time the drive signal is supplied, the same leveling impedance is used for all of the detected conductive strips, which can be inferred by those skilled in the art, or each time a drive signal is supplied, A set of detecting conductive strips adopts respective leveling impedances. In other words, each time the driving signal is supplied, the measurement of each predetermined impedance of each group of detecting strips is performed to determine the predicted impedance of the closest leveling signal, thereby obtaining each A set of driving conductive strips is provided with a leveling impedance of each of the strips when the driving signal is supplied to respectively adjust the impedance of the variable resistor electrically coupled to each of the detecting strips.

The aforementioned control circuit may be composed of one or more integrated circuit ICs in addition to electronic components. In an example of the present invention, the variable resistor may be built into the IC, and the impedance of the variable resistor may be controlled by a programmable program such as a firmware in the IC. For example, a variable resistor is composed of a plurality of resistors and is controlled by a plurality of switches, which are activated by different switches. The impedance of the variable resistor is adjusted on and off. Since the variable resistor and the programmable program are well-known technologies, they will not be described herein. The variable resistors in the IC can be controlled by the programmable program to be applied to different characteristics of the touch panel via the body correction method, which can effectively reduce the cost and achieve commercial mass production.

In a third embodiment of the present invention, the signal is measured by a control circuit, and the signals of each group of detecting conductive strips are respectively measured by a detecting circuit (such as an integrator), and the control circuit is based on Each set of driving strips determines the magnification of the detecting circuit, for example, the magnification of the amplifying circuit 17 shown in FIGS. 1 and 4. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset magnifications are set, and a signal for detecting the conductive strips is detected when the reference conductive strips (possibly one or more) are supplied with driving signals, or signals for detecting multiple or all of the conductive strips are detected. The sum of the signals is used as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset magnification that can cause the leveling signal to fall within the preset working range can be used as the leveling magnification of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal value, the detection circuit is respectively adjusted according to each preset magnification, and the signal of the detecting conductive strip is detected, or the plurality or all of the signals are detected. A summation of the signals of the conductive strips is detected to compare the preset magnification of the most advanced leveling signal as a leveling magnification of the set of non-reference conductive strips to which the drive signal is supplied. In this way, the leveling magnification of each group of driving strips can be determined, and the magnification of the detecting circuit can be adjusted according to the leveling magnification of each group of driving strips, so that a relatively flat image can be obtained, that is, between the signals in the image. The difference is small.

In the foregoing description, each time the drive signal is supplied, the same level of magnification is used for all of the detected conductive strips, and those skilled in the art can push It is also known that each time the driving signal is supplied, each group of detecting conductive strips adopts a respective leveling magnification. In other words, each time the driving signal is supplied, the signal is measured for each preset magnification of each group of detecting strips to determine the predicted magnification of the closest leveling signal, respectively. The leveling magnification of each of the detected conductive strips is obtained when each set of driving conductive strips is supplied with a driving signal.

In a fourth embodiment of the present invention, the signal is measured by a control circuit, and each group of signals for detecting the conductive strips is respectively measured by a detecting circuit (such as an integrator), and the control circuit is based on Each set of drive strips determines the measurement time of the detection circuit. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset measurement times are set, and a signal for detecting the conductive strip is detected when the reference conductive strip (possibly one or more) is supplied with the driving signal, or a plurality of or all detecting conductive strips are detected. The sum of the signals is used as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset measurement time that can cause the leveling signal to fall within the preset working range can be used as the leveling measurement time of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal value, the detecting circuit is respectively adjusted according to each preset measuring time, and the signal of detecting the strip is detected, or the plurality of strips or signals are detected. The sum of the signals of all the strips is detected to compare the preset measurement time closest to the leveling signal as the leveling time relative to the set of non-reference strips to which the drive signal is supplied. In this way, the leveling measurement time of each group of driving strips can be determined, and the measuring time of the detecting circuit can be adjusted according to the leveling measurement time of each group of driving strips, so that a relatively flat image can be obtained, that is, in the image. The difference between the signals is small.

In the foregoing description, each time the drive signal is supplied, all the conductive signals are detected. The strips use the same leveling measurement time, and those skilled in the art can infer that the detection strips of each group use their respective leveling measurement times each time the driving signal is supplied. In other words, each time the driving signal is supplied, the measurement of each preset measurement time of each group of detecting strips is performed to determine the predicted measuring time of the closest leveling signal. This obtains the leveling measurement time of each of the detecting conductive strips when each set of driving conductive strips is supplied with a driving signal.

In a fifth embodiment of the present invention, the control signal is a driving time length for which each set of driving conductive strips is supplied with a driving signal according to each set of driving conductive strips. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset driving time lengths are set, and when a reference conductive strip (possibly one or more) is supplied with a driving signal for a predetermined driving time, detecting a signal for detecting the conductive strip, or detecting more The total of the strip or all detected strip signals is used as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset driving time that can cause the leveling signal to fall within the preset working range can be used as the preset driving time of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal, the driving circuit is respectively adjusted according to each preset driving time, and the signal of the detecting conductive strip is detected, or the multiple or all detecting is detected. The summing of the signals of the conductive strips to compare the preset driving time closest to the leveling signal as the leveling driving time of the set of non-reference conductive strips. In this way, the leveling driving time of each group of driving strips can be determined, and the driving time of the driving circuit can be adjusted according to the leveling driving time of each group of driving strips, so that a relatively flat image, that is, a difference between signals in the image can be obtained. Very small.

In the foregoing description, each drive signal is supplied with each drive signal The strips use the same leveling drive time, and those skilled in the art will be able to deduce that each set of drive strips will each have its own leveling drive time each time a drive signal is provided. In other words, each time the driving signal is supplied, each group of driving strips is respectively provided with a driving signal for a certain driving time to determine the predicted driving time of the closest leveling signal, and accordingly each is obtained. The leveling drive time when the group drive strip is supplied with the drive signal.

In a sixth embodiment of the invention, the control signal is a drive potential that determines a drive signal for each set of drive strips to be provided in accordance with each set of drive strips. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset driving potentials are set, and when the reference conductive strips (possibly one or more) provide a driving signal at a predetermined driving potential, detecting a signal detecting the conductive strips, or detecting a plurality of or All detected the sum of the bus bar signals as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset driving potential that can cause the leveling signal to fall within the preset operating range can be used as the preset driving potential of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal, the driving circuit is respectively adjusted according to each preset driving potential, and the signal of the detecting conductive strip is detected, or the multiple or all detecting is detected. The sum of the signals of the conductive strips is compared to the preset drive potential closest to the leveling signal as the leveling drive potential of the set of non-reference conductive strips. In this way, the leveling driving potential of each group of driving strips can be determined, and the driving potential of the driving circuit can be adjusted according to the leveling driving potential of each group of driving strips, so that a relatively flat image, that is, a difference between signals in the image can be obtained. Very small.

In the foregoing description, each drive signal is supplied with each drive signal The strips employ the same leveling drive potential, as will be appreciated by those of ordinary skill in the art, and each set of drive strips may each employ a respective leveling drive potential each time a drive signal is provided. In other words, each time the driving signal is supplied, a certain driving potential is respectively supplied to each group of driving strips to determine the predicted driving potential of the closest leveling signal, thereby obtaining each group of driving strips accordingly. The leveling drive potential when the drive signal is supplied.

In a seventh embodiment of the present invention, the driving timing of each of the driving strips to be supplied with the driving signal can be determined according to each set of driving strips. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset driving timing points are set, and when the reference conductive strip (possibly one or more) is provided with a driving signal at a predetermined driving timing, detecting a signal for detecting the conductive strip, or detecting Measure the sum of multiple or all detected conductive strip signals as a leveling signal. In addition, the leveling signal may fall within a predicted working range and does not necessarily need to be the best or maximum signal. In other words, any preset driving timing point that can cause the leveling signal to fall within the preset working range can be used as the preset driving timing point of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal, the timing of providing the driving signal by the driving circuit is adjusted according to each preset driving timing point, and detecting the signal of the detecting conductive strip, or detecting the signal The sum of the signals of the plurality of or all of the detected conductive strips is compared to the preset driving timing point closest to the leveling signal as the leveling driving timing of the set of non-reference conductive strips. In this way, it can be determined that the driving timing of each group of driving strips is driven according to the driving timing of each group of driving strips, so that a relatively flat image can be obtained, that is, the difference between the signals in the image is small.

In the foregoing description, each drive signal is provided with the same drive timing point for all of the drive strips, as will be appreciated by those of ordinary skill in the art, It is also possible that each set of driving strips adopts a respective leveling driving timing point each time a driving signal is supplied. In other words, each time the driving signal is supplied, a driving signal is supplied to each group of driving strips at the driving time point thereof to determine the predicted driving timing point of the closest leveling signal, and accordingly, each is obtained. A set of driving timing points when a driving strip is supplied with a driving signal.

A person skilled in the art having ordinary knowledge can infer that in the seventh embodiment, changing the driving timing is equivalent in effect to the delay phase difference of the adjustment detecting circuit of the first embodiment. The two take the propagation time between the driving strip and the detecting strip from the driving circuit and the detecting circuit. The delay phase difference of the detection circuit can be adjusted, and the driving timing of the driving circuit can also be adjusted to enhance or reduce the strength of the received signal.

In the foregoing description, the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, and the seventh embodiment may be selected one or a plurality of mixed implementations, The invention is not limited. In addition, when measuring the leveling signal, one or more detecting conductive strips farthest from the detecting conductive strip may be selected for signal detection to generate a leveling signal. For example, the farthest signal of the detecting strip can be used to generate the leveling signal, or the farthest detecting the differential signal of the strip to generate the leveling signal (difference value), or the farthest three detectors The difference between the differential signals of the first two and the last two detecting conductive strips in the conductive strip is measured to generate a leveling signal (double difference). In other words, the leveling signal can be a signal value, a difference value, or a double difference value, or can be other values generated based on one or more signals detecting the conductive strip.

Please refer to FIG. 12, which is a signal measurement method of a touch screen according to the present invention. As shown in step 1210, a touch screen is provided. The touch screen includes a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel, and the driving conductive strips are The detecting conductive strips overlap in a plurality of overlapping regions. In addition, as shown in step 1220, one or a set of drive strips of the drive strip are selected as reference strips, and other strips or other sets of strips act as non-reference strips. The reference conductive strips may drive the conductive strips in the first or first group, or may be driven strips in other locations, and the invention is not limited thereto. Next, as shown in step 1230, a driving signal is provided to the reference conductive strip, and the signal of the at least one detecting conductive strip is detected according to one of the parameter sets. And, as shown in step 1240, when the signal of the at least one detecting conductive strip is not within a preset signal range, detecting the at least one detecting conductive strip according to one of the other parameter groups. The signal until the signal of the at least one detecting conductive strip falls within a preset signal range. In addition, as shown in step 1250, when the reference conductive strip is supplied with the driving signal, the at least one detecting conductive strip falls within the preset signal range as a leveling signal, and the parameter group according to the reference conductive strip is used as a parameter group. The initial parameter set of the reference strip. Next, as shown in step 1260, drive signals are sequentially provided to each or each set of non-reference conductive strips, and, as shown in step 1270, each or each set of non-reference conductive strips is provided with a drive. During the signal, the signal of the at least one detecting conductive strip is detected according to the parameter group 1 in sequence. Then, as shown in step 1280, determining an initial parameter set in each or each set of non-reference conductive strips, wherein each or each set of non-reference conductive strips is provided with a driving signal value, according to the initial parameter group detection The at least one signal detecting the conductive strip is closest to the leveling signal than the signal detecting the at least one detecting conductive strip according to the other parameter group.

According to the first, second, third, fourth, fifth, sixth and seventh embodiments previously described, the parameter group may be a resistance value for detecting a delay phase difference, a variable resistance, and a detection circuit. The magnification, the measurement time of the detection circuit, the drive time of the drive circuit, the drive potential of the drive circuit, and the drive timing of the drive circuit. In a first example of the present invention, detecting The circuit is connected to the at least one detecting conductive strip via a variable resistor, wherein the resistance of the variable resistor is changed according to an initial parameter of the conductive strip to which the driving signal is supplied. In a second example of the present invention, the time at which the signal is detected is changed in accordance with the initial parameters of the conductive strip to which the drive signal is supplied. In a third example of the present invention, the at least one detecting conductive strip is amplified by an amplifier and provided to the detecting circuit, wherein the amplification circuit of the detecting circuit is amplified according to the conductive strip provided with the driving signal. The initial parameters are changed. In addition, in a fourth example of the present invention, the at least one detecting strip is detected after a delay phase difference, wherein the delay phase difference is based on the initiality of the conductive strip to which the driving signal is supplied. Parameters to change. In a fifth example of the present invention, the driving time is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied. In a sixth example of the present invention, the driving potential is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied. In a seventh example of the present invention, the driving timing point is changed according to an initial parameter of a conductive strip to which a driving signal is supplied.

Therefore, referring to FIG. 4, the signal measurement of a touch screen according to the present invention includes: a touch screen, a driving circuit 41, a detecting circuit 42 and a control circuit 45. The touch screen includes a plurality of conductive strips 151 arranged in parallel and a plurality of conductive strips 152 arranged in parallel. The driving strips 151 and the detecting strips 152 overlap the plurality of strips. Overlapping area. The driving circuit 41 provides a driving signal to one or a group of driving conductive strips 151, wherein one or a group of driving conductive strips 151 of the driving conductive strips 151 is a reference conductive strip, and other strips or other groups of driving conductive strips 151 are Non-reference conductive strip. The detecting circuit 42 generates an evaluation signal of the driving conductive strip 151 to which the driving signal is supplied by the signal of the at least one detecting conductive strip 152 according to one of the plurality of sets of parameter groups each time the driving signal is supplied. The control circuit 45 selects, by the parameter group, a set of initial parameter sets as reference conductive strips to be evaluated by the detecting circuit according to the initial parameter set. The signal is used as a leveling signal, and the initial parameter set of each or each set of non-reference conductive strips is separately selected by the parameter set, wherein each or each set of non-reference conductive strips is evaluated according to an initial parameter set. The evaluation signal is closest to the leveling signal compared to the evaluation signal generated from other parameter sets. Furthermore, the parameter set may be stored in the storage circuit 43.

The evaluation signal can be generated based on one or more signals that detect the conductive strip. For example, the evaluation signal is generated by one of the detected conductive strips. For another example, the evaluation signal is generated by summing up at least two signals of the detecting conductive strips.

In addition, in an example of the present invention, the controller may sequentially generate an evaluation signal of the reference conductive strip by the detecting circuit according to one of the parameter groups, and use the generated evaluation signal of the largest reference conductive strip. The parameter set is used as the initial parameter set of the reference strip. In another example of the present invention, the controller may be configured to sequentially generate an evaluation signal of the reference conductive strip by the detecting circuit according to one of the parameter groups, and evaluate the first reference conductive strip that meets a condition. The parameter set on which the signal is based serves as the initial parameter set of the reference strip.

According to the first, second, third, fourth, fifth, sixth and seventh embodiments previously described, the parameter group may be a resistance value for detecting a delay phase difference, a variable resistance, and a detection circuit. The magnification, the measurement time of the detection circuit, the drive time of the drive circuit, the drive potential of the drive circuit, and the drive timing of the drive circuit. In a first example of the present invention, the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, wherein the detecting circuit is changed according to an initial parameter of the conductive strip to which the driving signal is supplied. The resistance of the variable resistor. In a second example of the present invention, the detecting circuit changes the time of detecting the signal according to an initial parameter of the conductive strip to which the driving signal is supplied. In a third example of the present invention, the at least one detecting conductive strip is amplified by an amplifier and provided to the detecting circuit, wherein the detecting circuit is an amplifier The magnification of the amplification circuit is changed according to the initial parameters of the conductive strip to which the drive signal is supplied. In addition, in a fourth example of the present invention, the detecting circuit starts measuring the signal of the at least one detecting conductive strip after a delay phase difference, wherein the detecting circuit is conductive according to the supplied driving signal. The initial parameters of the bar are used to change the delay phase difference. In a fifth example of the present invention, the driving time is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied. In a sixth example of the present invention, the driving potential is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied. In a seventh example of the present invention, the driving timing is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied.

In the second example described above, the time of detecting the signal is changed according to the conductive strip to which the driving signal is supplied. Similarly, in the fifth example described above, the driving time is changed in accordance with the conductive strip to which the driving signal is supplied. Similarly, in the seventh example described above, the timing of providing the driving signal is changed in accordance with the conductive strip to which the driving signal is supplied. Both the detection time and the drive time are related to the length of time.

In an embodiment of the invention, the driving time and the detecting time are all synchronized. In other words, in this case, the length of the detection time must be equal to the length of the driving time. Adjust the length of the drive time, and also adjust the length of the detection time. Adjust the length of the detection time, and also adjust the length of the drive time. One of ordinary skill in the art can infer that when the driving time and the detecting time are all synchronized, the energy required to drive the conductive strips in the detecting time is not wasted. That is to say, this embodiment has higher energy efficiency.

In another embodiment of the invention, the driving time and the detecting time are at least partially simultaneous. In some cases, the length of the detection time can be equal to the length of the drive time. However, within the partial detection time, the corresponding driving strip does not receive the driving signal. same Ground, within a portion of the drive time, the detection circuit does not detect the corresponding detection strip. In other cases, the length of the detection time is greater than the length of the driving time; that is, within a portion of the detection time, the corresponding driving strip does not receive the driving signal. In the remaining cases, the length of the driving time is greater than the length of the detecting time; that is, within a portion of the driving time, the detecting circuit does not detect the corresponding detecting strip. A person skilled in the art can infer that the above-mentioned driving time and detection time are only partially simultaneous embodiments, and the energy efficiency is worse than the embodiment in which the driving time and the detecting time are all synchronized.

However, in the real world, the driving signal emitted by the driving circuit must pass through the transmission of the driving conductive strip and other circuits, and the transmission of the induced detecting conductive strip and other circuits, and the delay is obtained after a delay time or phase difference. Measuring circuit. In other words, if the driving time and the detecting time are completely the same, the driving signal may not be received at the beginning of the detecting time, and the driving signal is continuously received after the detecting time ends. Therefore, one of ordinary skill in the art will appreciate that the drive time and the detection time can be synchronized only when the delay time or phase difference is known exactly. That is to say, the driving time length is equivalent to the detection time length, but the timing of the detection time starts later than the driving time up to the above phase difference. Similarly, in the real world, the material or resistance of each conductive strip is not the same due to the process of the touch screen or the touch panel. In addition, environmental factors such as humidity and temperature do not necessarily have the same effect on each conductive strip. Therefore, the delay time or phase difference described above may not be known exactly.

One advantage that needs to be pointed out at the same time or in synchronization is that the scan time can be accelerated. In one example, when the driving time is longer than the detection time, even if the detection time has ended, it is necessary to wait for the end of the driving time before scanning the next or next set of driving electrodes. If you can make the detection time even synchronous with the drive time, you don't have to wait for the drive. With the moving time, you can scan the next or next set of drive electrodes immediately.

In some embodiments of the invention, although the length of the drive time can be adjusted, the timing at which the drive signal is issued is a constant period. For example, the first drive electrode can be driven at t, the drive is stopped at t+3; the second drive electrode is driven at t+5, stopping at t+7.5; the third is driven at t+10 The electrode stops driving at t+12. For the first drive electrode, the drive time lasted for 3 time units. For the second drive electrode, the drive time lasted 2.5 time units. For the third drive electrode, the drive time only lasted. 2 time units. However, regardless of the change in driving time, the timing points at which the adjacent drive electrodes are driven are separated by 5 time units. That is, the time when the second driving electrode is driven is 5 time units from the time when the first driving electrode is driven; and the time when the third driving electrode is driven is 5 times shorter than the driving time of the second driving electrode. time unit.

In other embodiments of the present invention, in addition to adjusting the length of the driving time, the timing of issuing the driving signal can be adjusted. For example, the first drive electrode can be driven at t, and the drive is stopped at t+3; the second drive electrode is driven at t+5.5, stopping at t+8.5; driving the third at t+11.5 The electrode stops driving at t+14.5. For the first drive electrode, the drive time lasts for 3 time units, for the second drive electrode, the drive time lasts for 3 time units, and for the third drive electrode, the drive time continues. 3 time units. Although the length of the driving time does not change, the timing at which the adjacent driving electrodes are driven changes. That is, the time when the second driving electrode is driven is 5.5 time units from the time when the first driving electrode is driven; and the time when the third driving electrode is driven is 6 times shorter than the driving time of the second driving electrode. time unit.

Please refer to FIG. 13 , which is a block diagram of a touch system according to an embodiment of the invention. intention. The touch system includes a control module 1310 and a front-end module 1340, and a touch panel or a touch screen. The plurality of first conductive strips or the driving conductive strips or the driving electrodes 151 and the plurality of second conductive strips or the detecting conductive strips or the detecting electrodes 152 may be further included on the touch panel or the touch screen.

The control module 1310 and the front end module 1340 may be located in a single integrated circuit, or may be located in a plurality of integrated circuits. If they are located within a single integrated circuit, they may be on the same or different wafers. Both can be the same process or different processes. In short, the present invention is not limited to the embodiment thereof.

The front end module 1340 can include a driving module 1341 and a detecting module 1342. Please refer to the driving circuit 41 and the detecting circuit 42 of FIG. 4 . In an embodiment, the drive module 1341 may include all or a portion of the components of the drive circuit 41. In an example, the driving module 1341 can receive the clock signal, and generate a driving signal according to the clock signal, and provide the driving signal to one, a plurality of or all of the driving electrodes 151 through a driving selection circuit. The drive signal can be a square wave, a sine wave, or any composite waveform. The control module 1310 can set the waveform, the potential, the driving time length, the driving timing, and the like of the driving signal in accordance with the driven driving electrode 151.

In an embodiment, the detection module 1342 may include all or part of the components of the detection circuit 42. In an example, the detection module 1342 can include a detection selection circuit to select which one or which detection electrodes 152 are connected. The detection module 1342 may include a variable resistor, an amplifier, an integrator, and/or an analog digital converter. The control module 1310 can set the resistance of the variable resistor, the amplification factor or gain of the amplifier, the integration time length of the integrator, and/or the delay phase difference of the integrator according to the driven driving electrode 151. Option.

One of ordinary skill in the art understands that, in an embodiment, the control module The control options of the driver module 1341 and the detection module may be selected from the plurality of preset parameter groups described above, and the parameter groups may be stored in the control module 1310 or in other memory. These control options may be preset or dynamically generated, and the present invention does not limit the timing of setting parameters.

The applicant specifically points out that although the present invention is not limited to whether the detection data of the detection module 1342 is received, for example, the above-mentioned 壹 dimension or 贰 dimension sensing information, the sensing information is adjusted for correction. The impact of an environment or process on sensing information. However, one of the main spirits of the present invention is to control the various control options of the front end module 1340 by using the control module 1310, so as to control the front end module 1340 to first correct the influence of the electrode layout, the environment, or the process on the sensing information.

One of the benefits of the correction of the front end module 1340 is that the influence of the sensing information caused by the electrode layout, the environment, or the process is avoided as much as possible beyond the correction range of the sensing information by the control module 1310.

The second benefit of the correction of the front end module 1340 is that the parameter set that the control module 1310 needs to store or control is small. For example, when the touch screen has M first conductive strips 151 and N second conductive strips 152, even if the control module 1310 is driven according to the first conductive strip 151, the potential of the driving signal, the driving time length, Seven parameters such as the driving timing, the variable resistance of the detecting circuit, the magnification, the detection time length, the detection delay time or the phase difference are adjusted. In the single-electrode scanning mode, the control module 1310 only needs to control at most 7M parameters. If the subsequent correction operation is to be performed on the image or the 贰 dimensional sensing information, the control module 1310 needs to correct the MxN sensing information. In general, the number of second conductive strips will be greater than seven. Moreover, the examples do not necessarily regulate all of the above seven parameters. Therefore, the control module 1310 needs Perform at least one mathematical operation on the MxN sensing information. Similarly, in the multi-electrode scanning mode, the same is true. Therefore, the front end module 1340 performs the prior correction, which can effectively reduce the computing resources.

Returning to Fig. 13, when the single electrode scan is performed, the drive signal via the drive electrode 151A is transmitted a greater distance than the drive signal via the drive electrode 151Z. If all the options or conditions are the same, the sensing information about the driving electrode 151A should be worse than the sensing information about the driving electrode 151Z. In a relatively straightforward example, the phase difference can be adjusted such that the phase difference of the detecting driving electrode 151A is greater than the phase difference of the detecting driving electrode 151Z, so that the two sensing information are leveled. Assuming that the material and process problems of the respective conductive strips are neglected, the phase difference of the detected driving electrodes 151A can be obtained> the phase difference of the detecting driving electrodes 151B> the phase difference of the detecting driving electrodes 151C>...> detecting the driving electrodes The result of the phase difference of 151Z. These phase differences may have a linear relationship. Therefore, the control module 1310 can calculate the phase difference of each of the driving electrodes 151 by knowing the phase difference and the linear gradient (slope) of the detecting driving electrode 151A.

However, it is also possible to adjust the other parameters to make the two sensing information level. For example, the driving potential of the driving electrode 151A can be made larger than the driving potential of the driving electrode 151Z so that the two sensing information tends to be flat. Similarly, assuming that the material and process problems of the respective conductive strips are ignored, the driving potential of the driving electrode 151A > the driving potential of the driving electrode 151B > the driving potential of the driving electrode 151C > ... > the driving potential of the driving electrode 151Z can be obtained. These drive potentials may have a linear relationship. Therefore, the control module 1310 can calculate the driving potential of each driving electrode 151 by knowing the driving potential and the linear gradient (slope) of the driving electrode 151A.

Similarly, those skilled in the art can understand that at least, but not limited to, the potential of the driving signal, the driving time length, the driving timing, the variable resistance of the detecting circuit, the magnification, and the detection time length. Seven parameters such as detection delay time or phase difference are adjusted, so that the sensing information can be leveled. It is assumed that the control module 1310 may specifically target the strip or the set of driving electrodes 151 when the impedance value of a certain driving electrode 151 is particularly large due to the influence of the process, or when the electrical properties of the adjacent driving electrodes 151 are not linear. Store its parameters. For example, the drive electrodes 151A and 151Z of the first side and the second side may have different shapes or areas from the other drive electrodes 151 and may not have a linear relationship with the electrical properties of the adjacent drive electrodes 151. Therefore, the control module 1310 can store its parameters specifically for the drive electrodes 151A and 151Z.

Please refer to FIG. 14A, which is a signal measurement method of a touch screen according to an embodiment of the present invention. Reference may be made to the embodiment of FIG. 4 or FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: step 1410, sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and step 1420, sequentially detecting Measuring, by the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein the driving time of the first driving signal is different from The driving time of the second driving signal.

Please refer to FIG. 14B, which is a signal measurement method of a touch screen according to an embodiment of the present invention. Reference may be made to the embodiment of FIG. 4 or FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: at step 1430 A first driving signal and a second driving signal are respectively supplied to an adjacent first driving strip and a second driving strip, respectively, in a first driving time and a second driving time. In step 1440, a third driving signal and a fourth driving signal are respectively provided to the adjacent third group of driving strips and a fourth group of driving, respectively, in a third driving time and a fourth driving time. Conductive strip. Then, in step 1450, the signals of the at least one detecting conductive strip are sequentially detected to generate a corresponding one of the first driving signal, the second driving signal, the third driving signal, and the fourth driving signal. a signal, a second signal, a third signal and a fourth signal, wherein a first time difference between the second driving time and the first driving time is different from the fourth driving time and the third driving time A second time difference between the two.

Please refer to FIG. 14C, which is a signal measurement method of the touch screen according to an embodiment of the present invention. Reference may be made to the embodiments of FIG. 4, FIG. 13, and FIG. 14B. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: in step 1460, a first driving signal, a second driving time, and a third driving time are sequentially provided, respectively, a first driving signal, a second driving signal, and a third The driving signal is sent to an adjacent first set of driving strips, a second set of driving strips and a third set of driving strips. In step 1470, the signals of the at least one detecting conductive strip are sequentially detected to generate a first signal and a second signal corresponding to the first driving signal, the second driving signal, and the third driving signal, respectively. And a third signal, wherein a first time difference between the second driving time and the first driving time is different from a second time difference between the third driving time and the fourth driving time.

Please refer to FIG. 14D, which is a signal measurement method of a touch screen according to an embodiment of the present invention. Reference may be made to the embodiments of FIG. 4, FIG. 13, FIG. 14B, and FIG. 14C. Touch screen contains parallel rows A plurality of conductive strips of the column and a plurality of conductive strips of the plurality of detecting conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: in step 1480, sequentially providing a first driving signal and a second driving signal to a first driving strip and a second driving timing point and a second driving timing point. The second group drives the conductive strips. And in step 1490, a first signal and a second signal corresponding to the first driving signal and the second driving signal are respectively generated according to the signal detected by the at least one detecting conductive strip, wherein the first The driving timing point is different from the second driving timing point.

In the present invention, the above-mentioned driving timing point may refer to a time difference of a starting time point provided by two driving signals before and after, or may be a time difference with respect to a fixed clock signal.

In an embodiment of the present application, the touch screen may include a plurality of first electrodes parallel to the first axial direction, a plurality of second electrodes parallel to the second axial direction, and a plurality of dummy electrodes. In an example, the control device of the touch screen can perform self-capacitance detection by using the plurality of first electrodes and the plurality of second electrodes to detect a proximity object that is close to or in contact with the touch screen (referred to as a proximity). In another example, the control device of the touch screen can perform mutual capacitance detection by using the plurality of first electrodes and the plurality of second electrodes to detect the proximity object.

In the conventional technique, the spacing between each of the first electrodes is the same, and the spacing between each of the second electrodes is also the same. In general, the pitch of existing designs is about a distance of about 4 mm or less. Since the size of the touch screen is getting larger, more and more first electrodes and second electrodes are required. As the number of electrodes increases, more winding space is required at the edge of the touch screen, and the touch screen control device also requires more and more pins or contacts to connect. However, the winding space and the pin of the integrated circuit are limited. Therefore, the present application reduces the number of electrodes by designing electrodes with different pitches, thereby saving the above-mentioned winding space and product. The pin of the body circuit.

Please refer to FIG. 15 , which is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present application. In the upper half (a) of FIG. 15, a touch screen 1500 and a plurality of first electrodes 1510 included in the touch screen 1500 are included. In Fig. 15, the labels of the first electrodes are 1510a, 1510b, ..., and 1510k from left to right. In other embodiments, there may be other numbers of first electrodes 1510. In an embodiment, the first electrodes 1510 are all parallel to the first axis, that is, the vertical axis of FIG. Although the first electrode 1510 on FIG. 15 is simply a line segment, one of ordinary skill in the art will appreciate that the shape of the first electrode 1510 can be varied in many ways, except that its major axis is along the first axis. It is to be noted that, in Fig. 15, the above-described plurality of second electrodes and dummy electrodes parallel to the second axial direction are not shown.

It can be noted that in the lower half (b) of Fig. 15, the distance between these first electrodes 1510 is specifically divided, which is referred to as a pitch 1590. The pitch 1590ab is the distance between the first electrodes 1510a and 1510b, and the pitch 1590bc is the distance between the first electrodes 1510b and 1510c, and so on, as shown in the following table.

In the embodiment shown in FIG. 15, the closer to the middle of the touch screen 1500, the smaller the pitch closer to the edge of the touch screen 1500. The pitch 1590 between the first electrodes 1510 in the middle of the touch screen 1500 can reach a maximum value, for example, the pitch 1590ef is equal to the pitch 1590fg, and the pitches 1590ef and 1590fg are the largest among all the pitches 1590. In other words, at multiple spacings of 1590 Among them, there are a plurality of values of the pitch 1590 being the maximum value. However, in another embodiment of the invention, only one of the values of the spacing 1590 may be a maximum.

In an embodiment, since none of the first electrodes 1510 is located in the middle of the touch screen 1500, one of the pitches 1590 having the largest value is located in the middle of the touch screen 1500. In another embodiment, if a certain first electrode 1510 is located at the middle line of the touch screen 1500, one of the pitches 1590 having the maximum value is located on both sides of the first electrode 1510 of the intermediate line, such as the first electrode. 1510f.

In the embodiment shown in FIG. 15, the distribution of the pitches 1590 is bilaterally symmetric, with the intermediate line of the touch screen 1500 or the first electrode 1510f being the axis of symmetry. The spacing 1590ef and the spacing 1590gh are corresponding spacings 1590, both of which are six units in length. Thus, a symmetrical structure is formed between the pitches 1590 of FIG. However, the present application does not limit each of the pitches 1590 to form a bilaterally symmetric structure, nor does it limit that the pitch 1590 having a maximum value must be located in the middle or near the middle of the touch screen 1500.

One of the features of the present application is that a certain first pitch is different from a certain second pitch. In an embodiment, a third pitch is different from the first pitch and the second pitch. In an embodiment, the first pitch and the second pitch are adjacent pitches. In another embodiment, the first pitch and the second pitch are non-adjacent pitches. In an embodiment, when the first pitch is greater than the second pitch, the second pitch is closer to the middle line of the touch screen.

The difference between the adjacent pitches 1590 is called the pitch slope. To avoid confusion, the pitch slope can be defined as the ratio of the larger and smaller of the adjacent pitches, called the rising slope. Or defined as the ratio of the smaller of the adjacent spacing to the larger one, called the falling slope. In the rightmost column of the above table is the rising and falling slope of the adjacent spacing.

Since the distribution of these pitches 1590 is bilaterally symmetric in the embodiment shown in Fig. 15, the pitch slope is also symmetrical. For example, with the middle line of the touch screen 1500 or the first electrode 1510f as the axis of symmetry, the slope between the pitches 1590ab and 1590bc is equal to the slope between the pitches 1590jk and 1590kl. In this embodiment, the closer the rising slope is to the middle of the touch screen 1500 and the higher the falling slope, the higher the rising slope from the middle of the touch screen 1500 and the lower the falling slope. However, the present application does not limit each of the pitch slopes to form a bilaterally symmetric structure, nor does it limit that the 100% pitch rise or fall slope must be located in the middle or near the middle of the touch screen.

One of the features of the present application is that a certain first pitch slope is different from a certain second pitch slope. In an embodiment, a certain third pitch slope is different from the first pitch slope and the second pitch slope. In an embodiment, the first pitch slope and the second pitch slope are adjacent pitch slopes. In another embodiment, the first pitch slope and the second pitch slope are non-adjacent pitch slopes. In an embodiment, when the first pitch rising slope is greater than the second pitch rising slope, the second pitch rising slope corresponds to a pitch closer to the middle line of the touch screen. When the first pitch falling slope is greater than the second pitch falling slope, the pitch corresponding to the first pitch is closer to the middle line of the touch screen.

In order to reduce the number of electrodes, the corresponding winding space and the pin position of the integrated circuit are reduced. In an embodiment of the present application, the distance between the electrodes can be increased to 4 mm or more, for example, greater than 4.5 mm, to gradually reach a maximum pitch of about 7 mm to 8 mm. The above figures are merely examples, and the present application is not limited to the above-described pitch design.

If such a large distance is maintained at the edge of the touch screen, if the object is near the edge of the touch screen, the amount of the electrode closest to the edge may be reduced to be similar to the noise value and is likely to be filtered out. Since the amount of induction is relatively small, the position of the close object is quite difficult to calculate. Therefore, the present application proposes the above solution to make the electrode near the edge of the touch screen Gradually dense, so there are more electrodes that can sense the proximity object, and the calculated position can be more accurate. In addition, the present application also proposes a design that directly places the electrodes on the edge of the touch screen, which will be described later.

Please refer to FIG. 16 , which is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present application. Similar to the embodiment shown in Fig. 15, Fig. 16 does not show a plurality of second electrodes and dummy electrodes parallel to the second axial direction, and only a plurality of first electrodes 1610 parallel to the first axial direction are shown. In this embodiment, the spacing between the remaining first electrodes 1610 is the same except for the two first electrodes 1610a and 1610z closest to the edge. In this design, the first electrodes 1610a and 1610z can be utilized to enhance the proximity of the object detecting the edge of the touch screen 1600, and the number of the first electrodes 1610 can be reduced as much as possible.

In one embodiment, the first electrodes 1610a and 1610z are located just in the middle of the distance between the adjacent first electrode 1610 and the edge of the touch screen 1600. In one embodiment, the distance between the adjacent first electrode 1610 and the edge of the touch screen 1600 is equal to the spacing between all of the first electrodes 1610 except the first electrodes 1610a and 1610z.

When performing mutual capacitance detection, the position of the proximity object on the touch screen 1600 can be calculated according to the position of each of the first electrodes 1610 and the amount of sensing received. When the shape design of a certain first electrode 1610 is the same as that of the other first electrodes 1610, it is not necessary to correct the sensing amount of a certain first electrode 1610. For example, in the embodiment shown in FIG. 16, the shape of the first electrode 1610a and the other first electrodes 1610 are the same strip shape, and when the area is the same, there is no need to correct the amount of the first electrode 1610a. . However, when the shape design of a certain first electrode is different from that of the other first electrodes, it is necessary to correct the amount of inductance.

Please refer to FIG. 17 , which is a part of a touch screen according to an embodiment of the present application. A schematic diagram of the electrode structure. The same as the embodiment shown in FIG. 15, FIG. 17 does not show a plurality of second electrodes and dummy electrodes parallel to the second axial direction, and only shows parallel to the first axial direction (vertical axial direction in the drawing). A plurality of first electrodes 1710. The embodiment shown in Figure 17 includes four first electrodes 1710. Located at the far left is a first electrode 1710a whose position in the second axial direction (horizontal axis in the drawing) is 0, and the first electrode 1710a includes a plurality of triangular conductive sheets 1712. Since the first electrode 1710a is located at the left edge of the touch screen, the conductive sheet 1712 is located on the right side of the first electrode 1710a and extends to the right by about 2.5 units.

The first electrode 1710b is located at a position 6 in the second axial direction and includes a plurality of quadrilateral conductive sheets, each of which is composed of two left and right triangular conductive sheets 1722 and 1724. The triangular conductive sheet 1722 on the left side has the same shape as the triangular conductive sheet 1712, but is opposed to each other and extends leftward by the first electrode 1710b by about 2.5 units. The triangular conductive sheet 1724 on the right side has the same shape as the triangular conductive sheet 1732, but in the opposite direction, extending from the first electrode 1710b to the right by about 4.5 units.

Three types of first electrodes 1710 can be seen in FIG. The first electrode 1710a belongs to the first type, which is located at the edge of the touch screen, and its electrode shape can only be biased to one side. The first electrode 1710b belongs to the second type, which is located in the middle of the touch screen, but its electrode shape is asymmetrical due to the difference in the pitch between the left and right sides. The first electrode 1710c belongs to the third type, which is located in the middle of the touch screen, and because the spacing between the two sides is the same, the shape of the electrodes is symmetrical.

Assuming that the same proximity objects are respectively connected to different positions 1702, 1704, and 1706, the inductance of the first electrode 1710 at each position is different, which causes the amount of inductance to be different. For example, in the embodiment shown in the third figure, the ratio of the area of the conductive sheets associated with the first electrodes 1710a, 1710b and 1710c is 2.5 to 7 to 9. When the proximity object is at position 1702, the area of the conductive strip 1712 of the first electrode 1710a will be less than the proximity object at position 1704. The sum of the areas of the conductive sheets 1722 and 1724 of the first electrode 1710b. In addition, when the proximity object is at position 1702, the first electrode 1710c may have been unable to detect its amount of induction. However, when the proximity object is at position 1704, the first electrodes 1710a and 1701c can also detect the amount of inductance.

It will be understood by those skilled in the art that the embodiment shown in Fig. 17 uses a triangular conductive sheet as the shape of the electrode, but the present application is not limited to such an electrode shape. For example, an electrode shape such as a hexagonal shape, an octagonal shape, an N-sided shape, a square spiral shape, a circular spiral shape, or the like can also be used.

Compared with the embodiment shown in Figs. 15 and 16, the first electrode 1710a located at the edge of the touch screen is added in the embodiment of Fig. 17. The first electrode 1710a is closer to the edge of the touch screen than the first electrodes 1610a and 1610z shown in FIG. 16, and thus has a better detection effect for the proximity object at the edge of the touch screen.

It is premature that since the electrode shapes of the first electrodes 1710a and 1710b of the first type and the second type are different, it is necessary to correct the amount of induction of the two types of electrodes. The modified step can multiply the amount of inductance by a coefficient, which can be obtained by looking up the table or calculated according to a function. In an embodiment, the function may be a linear function or a quadratic function. In one embodiment, the coefficient may be related to the area of the conductive sheet, or to the area of the conductive sheet of the adjacent electrode, and also to the spacing between adjacent electrodes.

In addition to correcting the amount of inductance multiplied by the coefficient in the digital processing section, it can be corrected first in the analog front end (AFE) circuit section. The present application may include correction at the digit front end, or may be performed in the step of digital processing, or may be performed in both. As long as the steps and/or coefficients of these corrections are The different pitch correlation between adjacent electrodes, the different sensing areas caused by different pitches, or the different sensor area areas are all within the scope of the present application.

In an embodiment, when mutual capacitance detection is used, the driving signal is sequentially supplied to the second electrode parallel to the second axis, and then the sensing amount of each of the first electrodes is measured to detect the proximity object. In connecting the respective second electrode driving portions, the analog front end circuit can control the driving time of the driving signal and the voltage of the driving signal. In the portion connecting the respective first electrodes, the analog front end circuit can provide a variable resistor, an amplifier, and an integrator to measure the above-mentioned amount of inductance. Therefore, the analog front-end circuit can control the resistance value of the variable resistor, the gain value of the amplifier, the integration timing of the integrator (or the phase difference or time difference from the drive signal), and the length of the integration time.

Therefore, according to each of the second electrodes to which the driving signal is supplied, the analog front end circuit can adjust one of the above parameters or any combination thereof for adjusting the sensing amount. In an embodiment, the amplifier gain coefficient of the first electrode 1710a can be adjusted to be 9/2.5 times the amplifier gain coefficient of the first electrode 1710c according to the area of the associated conductive sheet, and the amplifier gain coefficient of the first electrode 1710b can be adjusted to The first electrode 1710c has an amplifier gain coefficient of 9/7 times. In another embodiment, the resistance of the variable resistance of the first electrode 1710b can be adjusted to be 7/2.5 times of the variable resistance group value of the first electrode 1710a, and the resistance of the variable resistance of the first electrode 1710b is blocked. The value is adjusted to be 9/2.5 times the value of the variable resistance group of the first electrode 1710a.

When the mutual capacitance detects the proximity object, the difference between the detected values of the adjacent first electrodes 110 and/or the double difference (ie, the difference between the two differences) may be utilized to reduce the interference of the noise. Then make subsequent judgments. The above difference and/or double difference is an action of subtracting the adjusted value. Similarly, in an embodiment, the adjustment can be made directly in the analog front end circuit, or The difference and/or double difference operations are performed directly on the analog front end circuit. Of course, it is also possible to leave the portion of the digital processing before performing the adjustment and the difference and/or the difference between the brushes.

In the foregoing embodiments, the plurality of pitch slopes other than 100% are different. In an embodiment, the slope of the pitch other than 100% may be set within a certain range for convenience of design or calculation. For example, the pitch slope can be set to 5% ± 1%. In this way, the above adjustment process can be simplified. If the pitch slope is set to a small value, or a less accurate position of the proximity object can be accepted, the pitch slope can even be ignored.

One of the features of the present application is that a certain first pitch slope is equal to a certain second pitch slope, and the two are not 100%. In an embodiment, the difference between the slope of the first pitch and the slope of the second pitch falls within a range. In an embodiment, in an embodiment, the first pitch slope and the second pitch slope are adjacent pitch slopes. In another embodiment, the first pitch slope and the second pitch slope are non-adjacent pitch slopes.

In the embodiments of the first to third figures, the first electrode parallel to the first axial direction is used as an illustration. However, one of ordinary skill in the art will appreciate that the above-described different pitch designs can also be applied simultaneously to the second electrode parallel to the second axis in order to reduce the winding space of the second electrode and the footprint of the integrated circuit.

Please refer to FIG. 18 , which is a schematic diagram of a partial electrode structure of a touch screen according to an embodiment of the present application. Different from the first three figures, the fourth figure is provided with three types of first electrodes 1810 and second electrodes 1820.

Figure 18 shows the upper left corner portion of the touch screen, and the second electrode 1820a is located at the upper edge portion of the touch screen. One of ordinary skill in the art will appreciate that the first electrode 1810 and the second electrode 1820 may be on the same substrate or on different substrates. When located on different substrates At this time, bridging may not be required between the respective conductive sheets of the second electrode 1820. When located on the same substrate, one of the first electrode 1810 and the second electrode 1820 must be bridged between the respective conductive sheets to electrically couple the conductive sheets. The second electrode 1820 can also be connected to the control device from the left side instead of being connected to the control device from the right side. For ease of drawing and understanding, FIG. 18 is bridged between the respective conductive sheets of the second electrode 1820. It will be understood by those skilled in the art that FIG. 18 is only one of the embodiments, and the present application also Can be applied to the above changes.

The second electrode 1820a is identical to the first electrode 1810a and is of the first type described above, both of which are located at the edge of the touch screen, so that the associated conductive sheet or electrode design contains only half of the sides. The second electrode 1820b is the same as the first electrode 1820b, and is of the second type described above, and the associated conductive sheet is a quadrilateral. The conductive sheet of the first electrode 1810b shown in FIG. 18 is not a rhombic shape that is bilaterally symmetrical as compared with the first electrode 1710b shown in FIG. The second electrode 1820c is the same as the first electrode 1810c and is of the third type described above.

When the same driving signals are respectively transmitted to the second electrodes 1820a and 1820b, since the conductive sheet areas of the two are different from the distances of the other second electrodes 1820, different sensing values are generated for the same first electrode 1810. As described above, the present application can adjust the sensing value by analogizing the front end and/or the digital processing portion, and the above adjustment is performed according to the different second electrode 1820 to which the driving signal is supplied.

In an embodiment, the voltage value when the second electrode 1820a is driven may be adjusted to be higher than the voltage value when the second electrode 1820b is driven. The voltage value when the second electrode 1820b is driven can be adjusted to be higher than the voltage value when the second electrode 1820c is driven. In another embodiment, when the same driving signal is supplied to the second electrode 1820a, the analog front end circuit can adjust the resistance of the variable resistor to be lower than when the same driving signal is supplied to the second electrode 1820b. When When the same driving signal is supplied to the second electrode 1820b, the analog front end circuit can adjust the resistance of the variable resistor to be lower than when the same driving signal is supplied to the second electrode 1820c.

One of ordinary skill in the art will appreciate that in the receiving portion of the analog front end circuit, in addition to being adjustable for different second electrodes 1820 being driven, adjustments may be made to different first electrodes 1810 simultaneously. In an embodiment, assuming that there are M first electrodes 1810 and N second electrodes 1820, the analog front end circuit can control the MXN group coefficients at most for one complete scan of the touch screen, and each set of coefficients can include the above coefficients. In one or any combination thereof, the coefficients may include, but are not limited to, the driving time of the driving signal of the driving end and the voltage of the driving signal, and the resistance value of the variable resistor at the receiving end, the gain value of the amplifier, and the integration timing of the integrator ( Or a coefficient such as a phase difference or a time difference from a drive signal, and an integration time length.

In some embodiments, the driving signal can be simultaneously supplied to two or more sets of second electrodes 1820, and the number of the above coefficient groups can be at most the number of groups of the driven second electrodes 1820 and N. product. One of ordinary skill in the art will appreciate that in some embodiments, corrections may not be required for each coefficient set.

According to various embodiments described above and possible variations thereof, the present application proposes a touch screen having electrode designs with different pitches, and a method of mutual capacitance detection thereof. According to the touch screen manufactured by the present application, the distance between the electrodes can be increased, the number of electrodes can be reduced, and the detection performance of the edge of the touch screen can be maintained or even improved, so as to reduce the winding space and the position of the integrated circuit that needs to be occupied. .

In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen described above includes a plurality of drivers arranged in parallel The conductive strips and the plurality of conductive strips of the plurality of detecting conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. The driving time of the first driving signal is different from the driving time of the second driving signal.

In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14A. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein a driving time of the first driving signal is different from the second driving signal Drive time.

In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects that the signals of the at least one detecting conductive strip respectively generate corresponding to the first driving signal and the second A first signal and a second signal of the driving signal. At least one of the following conditions or any combination thereof is established: the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, and the variable resistor is generated when the detecting circuit generates the first signal When the detecting circuit generates the second signal, the variable resistor is set to a second resistance value, and the first resistance value is different from the second resistance value; The measuring circuit generates the first signal by using a first detection time length, and the detecting circuit generates the second signal by using a second detection time length, wherein the first detection time length is different from the second Detecting the length of time; the detecting circuit is connected to at least one detecting conductive strip via an amplifier, and when the detecting circuit generates the first signal, the amplifier is set to a first magnification value, and the detecting When the circuit generates the second signal, the amplifier is set to a second magnification value, the first magnification value is different from the second magnification value; and the detecting circuit generates the first after a first delay phase difference Signal, the detection The second signal is generated after the second delay phase difference, wherein the first delay phase difference is different from the second delay phase difference; the potential of the first driving signal is different from the potential of the second driving signal; And a driving time of the first driving signal is different from a driving time of the second driving signal.

In another embodiment of the present invention, a signal measurement method of a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein at least one of the following conditions or any of the following conditions In combination, the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, and when the detecting circuit generates the first signal, the variable resistor is set to a first resistance value. When the detecting circuit generates the second signal, the variable resistor is set to a second resistance value, the first resistance value is different from the second resistance value; the detecting circuit uses a first detection time Generating the first signal by the length, the detecting circuit generates the second signal by using a second detecting time length, wherein the first detecting time length is different from the second detecting time length; the detecting circuit Connected to at least one of the detecting conductive strips via an amplifier, wherein the detecting circuit generates the first signal, the amplifier is set to a first magnification value, and the detecting circuit generates the second signal when the amplifier Is set to a second magnification value, the first magnification value is different from the second magnification value; the detection circuit generates the first signal after a first delay phase difference, and the detection circuit passes through a Generated after the second delay phase difference a second signal, wherein the first delay phase difference is different from the second delay phase difference; a potential of the first driving signal is different from a potential of the second driving signal; and a driving time of the first driving signal is different from The driving time of the second driving signal.

In an embodiment of the invention, a touch system is provided, comprising the above touch screen and signal measuring device.

In an embodiment, the driving time of the first driving signal and the driving time of the second driving signal are two sets of parameter values among the plurality of groups of parameters.

In an embodiment, a time length ratio of a driving time of the first driving signal to a driving time of the second driving signal corresponds to one or a combination of the following parameters: the first group of the driving conductive strips and the first An area ratio of the two sets of driving conductive strips; and a spacing between the first set of the driving conductive strips and the adjacent driving conductive strips and the second set of the driving conductive strips and adjacent ones One of the pitch ratios of the pitch of the driving strips.

In an embodiment, wherein a driving time of the first driving signal and a potential ratio of the second driving signal correspond to one or a combination of the following parameters: the first group of the driving conductive strips and the second group And an area ratio of the driving strip; and a spacing between the first set of the driving strips and the adjacent driving strips and a spacing between the second set of the driving strips and the spacing of the driving strips.

In an embodiment, the detecting circuit generates the first signal by using a first detection time length, and generates the second signal by using a second detection time length. The first detection time corresponds to a driving time of the first driving signal, and the second detection time corresponds to a driving time of the second driving signal.

In an embodiment, the first detection time is the same as the driving time of the first driving signal, and the second detecting time is the same as the driving time of the second driving signal, and the first detecting time is different from the driving time. Second detection time.

In an embodiment, the first detection time is greater than a driving time of the first driving signal, and the second detection time is greater than a driving time of the second driving signal.

In an embodiment, the detecting circuit generates the first signal after a first delay phase difference, and generates the second signal after a second delay phase difference, wherein the first delay phase difference Different from the second delay phase difference.

In one embodiment, the first set of driving conductive strips comprises one or more consecutive driving conductive strips, and the second set of driving conductive strips comprises one or more consecutive driving conductive strips, the first group of The drive strips and the second set of drive strips comprise the same number of the drive strips.

In an embodiment, the first set of the driving conductive strips and the second set of the driving conductive strips do not include any one of the driving strips of the touch screen.

In an embodiment, the driving circuit and the detecting circuit are part of a front end module.

In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips, respectively, at a first driving timing point and a second driving timing point. . The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. The first driving opportunity point is different from the second driving timing point.

In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14D. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group respectively according to a first driving timing point and a second driving timing point Driving the conductive strips; sequentially detecting, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein the A drive timing point is different from the second drive timing point.

In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive signals in a first driving time and a second driving time. article. The driving circuit sequentially supplies a third driving signal and a fourth driving signal to a third group of the driving conductive strips and a fourth group of the driving conductive signals, respectively, in a third driving time and a fourth driving time. article. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal corresponding to the first driving signal, the second driving signal, the third driving signal, and the fourth driving signal, respectively. a second signal, a third signal, and a fourth signal. The first time difference between the second driving time and the first driving time is different from a second time difference between the fourth driving time and the third driving time.

In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14B. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: providing a first driving signal and a second driving signal to a adjacent one of the first group of driving strips and a second according to a first driving time and a second driving time, respectively. And driving the conductive strips; respectively, providing a third driving signal and a fourth driving signal to a third group of the driving conductive strips and a fourth group respectively according to a third driving time and a fourth driving time Driving the conductive strips; and sequentially detecting, by the signals of the at least one detecting conductive strip, corresponding to the first driving signal, the second driving a first signal, a second signal, a third signal, and a fourth signal of the third driving signal and the fourth driving signal, wherein the second driving time is between the first driving time and the first driving time A first time difference is different from a second time difference between the fourth driving time and the third driving time.

In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal, a second driving signal and a third driving signal to an adjacent first group in a first driving time, a second driving time and a third driving time. The driving strip, a second set of the driving strips and a third set of the driving strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal, the second driving signal and the third driving signal, respectively A third signal. The first time difference between the second driving time and the first driving time is different from a second time difference between the third driving time and the second driving time.

In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14C. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: providing a first driving signal, a second driving signal and a third driving signal to adjacent ones in a first driving time, a second driving time and a third driving time, respectively. a first set of the driving strips, a second set of the driving conductive strips and a third set of the driving conductive strips; and sequentially detecting signals generated by the at least one detecting conductive strips respectively corresponding to the first driving signals, the second driving signals, and the a first signal, a second signal and a third signal of the third driving signal, wherein a first time difference between the second driving time and the first driving time is different from the third driving time and the A second time difference of the second driving time.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention; any equivalent changes or modifications which are made in the spirit of the present invention should be included in the following. The scope of the patent application.

151‧‧‧ drive electrodes

152‧‧‧Detection electrode

1310‧‧‧Control Module

1340‧‧‧ Front End Module

1341‧‧‧Drive Module

1342‧‧‧Detection module

Claims (15)

A signal measuring device for a touch screen, wherein the touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel, and the driving conductive strips and the detecting conductive The signal measuring device includes: a driving circuit, sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group Driving a conductive strip; and a detecting circuit sequentially detecting, by the signal of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, The driving time length of the first driving signal is different from the driving time length of the second driving signal, wherein at least two adjacent spacings of the plurality of spacings between the plurality of conductive strips are different. The signal measuring device of claim 1, wherein any two of the plurality of pitches have different adjacent pitches. The signal measuring device of claim 1, wherein a first pitch of the plurality of pitches is greater than a second pitch, the first pitch being closer to a center of the touch screen than the second pitch. The signal measuring device of claim 1, wherein the spacing is the same except for the two spacings closest to the edge. The signal measuring device of claim 1, wherein the plurality of pitches are according to the touch screen The centerline is symmetrical. The signal measuring device of claim 1, wherein the plurality of pitches are between 4 mm and 8 mm. The signal measuring device of claim 1, wherein the plurality of conductive strips comprise two edge conductive strips located at an edge of the touch screen. The signal measuring device of claim 7, wherein a third conductive strip of the plurality of conductive strips adjacent to the edge conductive strips in parallel comprises a plurality of non-parallelogram shaped quadrilateral conductive sheets. A method for measuring a signal of a touch screen, wherein the touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel, the driving strips and the detecting conductive The strips are overlapped in a plurality of overlapping regions, and the signal measuring method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; And sequentially detecting, by the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein the first driving signal is The driving time length is different from the driving time length of the second driving signal, wherein at least two adjacent spacings of the plurality of spacings between the plurality of conductive strips are different. The signal measurement method of claim 9 , wherein when the plurality of detection strips have different spacings, the signal measurement method further comprises: conducting electrical conductivity according to the plurality of detection strips The area of the slice, adjusting the sensing value of the plurality of detecting conductive strips. The signal measurement method of claim 9, wherein when the plurality of pitches between the plurality of driving conductive strips are different, the signal measuring method further comprises: the conductive sheet area according to the plurality of driving conductive strips And adjusting a voltage value of the driving signal sent by the plurality of driving conductive strips. The signal measurement method of claim 9, wherein a driving time length of the first driving signal and the second driving signal are different when a plurality of pitches between the plurality of driving conductive strips are different The driving time length is relative to the conductive strip area of the first group of the driving conductive strips and the second group of the driving conductive strips. A signal measuring device for a touch screen, wherein the touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel, and the driving conductive strips and the detecting conductive The signal measuring device includes: a driving circuit, sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group Driving a conductive strip; and a detecting circuit sequentially detecting, by the signal of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, Wherein at least one of the following conditions or any combination thereof is established: the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, the detecting When the first circuit generates the first signal, the variable resistor is set to a first resistance value, and when the detecting circuit generates the second signal, the variable resistor is set to a second resistance value, the first The resistance value is different from the second resistance value; the detection circuit generates the first signal by using a first detection time length, and the detection circuit generates the second signal by using a second detection time length, The first detection time length is different from the second detection time length; the detection circuit is connected to at least one of the detection conductive strips via an amplifier, and the detection circuit generates the first signal when the amplifier When the detection circuit generates the second signal, the amplifier is set to a second magnification value, and the first magnification value is different from the second magnification value; the detection circuit is configured to be a first magnification value. After the first delayed phase difference is generated, the first signal is generated, and the detecting circuit generates the second signal after a second delayed phase difference, wherein the first delayed phase difference is different from the second delayed phase difference The first drive letter a potential different from a potential of the second driving signal; a first driving timing point for providing the first driving signal is different from a second driving timing point for providing the second driving signal; and the first driving signal The driving time length is different from the driving time length of the second driving signal, wherein at least two adjacent spacings of the plurality of spacings between the plurality of conductive strips are different. A method for measuring a signal of a touch screen, wherein the touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel, the driving strips And the detecting conductive strip overlaps the plurality of overlapping regions, the signal measuring method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a first Two sets of the driving conductive strips; and sequentially detecting, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein at least One of the following conditions or any combination thereof is established: the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, and the variable resistor is set when the detecting circuit generates the first signal a first resistance value, when the detecting circuit generates the second signal, the variable resistor is set to a second resistance value, the first resistance value is different from the second resistance value; the detecting circuit The first signal is generated by using a first detection time length, and the detection circuit generates the second signal by using a second detection time length, wherein the first detection time length is different from the second detection Length of time; the detection circuit An amplifier is connected to the at least one detecting conductive strip. When the detecting circuit generates the first signal, the amplifier is set to a first magnification value, and when the detecting circuit generates the second signal, the amplifier is Set to a second magnification value, the first magnification value is different from the second magnification value; the detecting circuit generates the first signal after a first delay phase difference, and the detecting circuit passes a first Generating the second signal after delaying the phase difference, wherein the first delay phase difference is different from the second delay phase difference; the potential of the first driving signal is different from the potential of the second driving signal; providing the first a first driving timing of the driving signal is different from providing the second driving a second driving timing point of the signal; and a driving time length of the first driving signal is different from a driving time length of the second driving signal, wherein at least two of the plurality of spacings between the plurality of conductive strips The adjacent spacing is different. A touch control system comprising: a touch screen comprising a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel; the driving conductive strips and the detecting conductive strips Overlapping a plurality of overlapping regions, wherein at least two of the plurality of spacings between the plurality of conductive strips are different in spacing; and a signal measuring device comprising: a driving circuit, sequentially providing one The first driving signal and the second driving signal are respectively applied to the first group of the driving conductive strips and the second group of the driving conductive strips; and a detecting circuit sequentially detecting the signals of the at least one detecting conductive strips Generating a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein a driving time length of the first driving signal is different from a driving time length of the second driving signal.