Patent Publication Number: US-2023161435-A1

Title: Touch apparatus and touch detection method thereof

Description:
TECHNICAL FIELD 
     The present disclosure relates to a touch apparatus and a touch detection method of the touch apparatus. More particularly, the present invention relates to a touch apparatus for detecting a touch by a stylus pen, and a touch detection method of the touch apparatus. 
     BACKGROUND ART 
     Various terminals such as a mobile phone, a smart phone, a tablet PC, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigator, and the like are provided with a touch sensor. 
     In such a terminal, the touch sensor may be located on a display panel where an image is displayed, or may be disposed in one region of a terminal body. As a user interacts with the terminal by touching the touch sensor, the terminal can provide an intuitive user interface to the user. 
     The user may use a stylus pen for sophisticated touch input. Such a stylus pen can transmit and receive signals through a touch sensor using an electrical and/or magnetic method. 
     DISCLOSURE 
     Technical Problem 
     Exemplary embodiments are intended to provide a touch apparatus and a touch detection method thereof that facilitate signal processing for detecting touch coordinates. 
     Exemplary embodiments are intended to provide a touch apparatus and a touch detection method thereof to determine the type of a touch object. 
     Exemplary embodiments are intended to provide a touch apparatus with improved touch detection performance and a touch detection method thereof. 
     Technical Solution 
     In order achieve the above-stated or other purpose of the present invention, a touch apparatus according to a first exemplary embodiment of the present invention includes: a touch sensor; and a touch controller that operates in a resonance driving mode during which a first driving signal is output for generation of a resonance signal of a stylus pen to the touch sensor and an idle mode during which the driving signal output to the touch sensor is stopped, and obtains first touch coordinate information from a detection signal input from the touch sensor during the resonance driving mode. 
     In the touch apparatus according to the first exemplary embodiment, the touch controller obtains an effective signal by using a baseline signal, and the detection signal output from the touch sensor during the resonance driving mode, and obtains the first touch coordinate information from the effective signal. 
     In the touch apparatus according to the first exemplary embodiment, the touch controller may determine a type of a touch object that generated a touch input by using the effective signal. 
     In the touch apparatus according to the first exemplary embodiment, the touch controller may recognize the touch object as the stylus pen when the effective signal is a signal that corresponds to a resonance signal of the stylus pen. 
     In the touch apparatus according to the first exemplary embodiment, when a touch input with respect to the touch sensor is detected, the touch controller may determine a type of a touch object that generated the touch input from the detection signal input from the touch sensor during the idle mode. 
     In the touch apparatus according to the first exemplary embodiment, a frequency of the first driving signal may correspond to a resonance frequency of the stylus pen. 
     In the touch apparatus according to the first exemplary embodiment, the touch controller may operate in a normal driving mode during which a second driving signal of which a frequency is different from that of the first driving signal is output to the touch sensor. 
     In the touch apparatus according to the first exemplary embodiment, the touch controller obtains second touch coordinate information by using a detection signal input from the touch sensor during the normal driving mode. 
     In the touch apparatus according to the first exemplary embodiment, a frequency of the first driving signal in the resonance driving mode may be different from a frequency of the second driving signal in the normal driving mode. 
     A touch detection method of a touch apparatus according to a second exemplary embodiment of the present invention includes: entering a resonance driving mode, and outputting a first driving signal for generation a resonance signal of a stylus pen to a touch sensor; receiving a detection signal from the touch sensor during the resonance driving mode; obtaining first touch coordinate information from the detection signal; and entering an idle mode, and stopping outputting of a driving signal with respect to the touch sensor. 
     In the touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention, the obtaining of the first touch coordinate information may include: obtaining an effective signal by using a baseline signal, and the detection signal received from the touch sensor during the resonance driving mode; and obtaining the first touch coordinate information from the effective signal. 
     The touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention may further include recognizing a touch object that generated a touch input by using the effective signal. 
     In the touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention, the recognizing of the touch object may include recognizing the touch object as the stylus pen when the effective signal is a signal corresponding to a resonance signal of the stylus pen. 
     The touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention may further include, while opening in the idle mode, determining a type of a touch object that generated the touch input from the detection signal received from the touch sensor. 
     In the touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention, the determining of the type of the touch object while operating in the idle mode may include determining the touch object as the stylus pen when the detection signal input from the touch sensor during the idle mode includes a signal component that corresponds to a resonance signal of the stylus pen. 
     In the touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention, a frequency of the first driving signal may correspond to a resonance frequency of the stylus pen. 
     The touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention may further include: operating in a normal driving mode during which a second driving signal of which a frequency is different from the frequency of the first driving signal is output to the touch sensor; and obtaining second touch coordinate information by using a detection signal input from the touch sensor during the normal driving mode. 
     In the touch detection method of the touch apparatus according to the second exemplary embodiment of the present invention, the first driving signal in the resonance driving mode may have a different frequency from a frequency of the second driving signal in the normal driving mode. 
     A touch apparatus according to a third exemplary embodiment of the present invention includes: a touch sensor that includes a plurality of first touch electrodes for obtaining a coordinate value in a first coordinate axis, and a plurality of second touch electrodes for obtaining a coordinate value in a second coordinate axis that perpendicularly crosses the first coordinate axis; and a touch controller that operates in a driving mode during which a driving signal for generation of a resonance signal of a stylus pen is output to the touch sensor, and an idle mode during which the outputting of the driving signal is stopped, and obtains touch coordinate information from a detection signal input from the touch sensor during a driving mode section during which the touch controller operates in the driving mode. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may simultaneously output the driving signal to the plurality of first touch electrodes during a first driving mode section and may simultaneously output the driving signal to the plurality of second touch electrodes during a second driving mode section, which is the next driving mode section of the first driving mode section, and may obtain the touch coordinate information by using a detection signal input from at least one type of touch electrodes among the plurality of first touch electrodes and the plurality of second touch electrodes during the first and second driving mode sections. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may obtain a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals input from the plurality of second touch electrodes during the first driving mode section, and may obtain a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals input from the plurality of first touch electrodes during the second driving mode section. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may obtain a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals input from the plurality of first touch electrodes during the first driving mode section, and may obtain a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals input from the plurality of second touch electrodes during the second driving mode section. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may simultaneously output the driving signal to the plurality of first and second touch electrodes, and obtains the touch coordinate information by using a detection signal input from the plurality of touch electrodes and/or the plurality of second touch electrodes during the driving mode. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may obtain a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals received from the plurality of second touch electrodes, and may obtain a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals input from the plurality of first touch electrodes during the driving mode section. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may obtain a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals input from the plurality of first touch electrodes during the first driving mode section, and may obtain a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals input from the plurality of second touch electrodes during a second driving mode section, which is a driving mode section next to the first driving mode section. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may simultaneously output the driving signal to the plurality of first touch electrodes during the driving mode section and obtains a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals input from the plurality of second touch electrodes during the driving mode, and may obtain a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals input from the plurality of first touch electrodes for an idle mode section during which the touch controller operations in the idle mode, which is consecutive to the driving mode section. 
     In the touch apparatus according to the third exemplary embodiment of the present invention, the touch controller may determine a type of a touch object that generated the touch input by using a detection signal received from the touch sensor while operating in the idle mode. 
     In addition, a touch apparatus according to a fourth exemplar embodiment of the present invention includes: a touch sensor that includes a plurality of touch electrodes that are arranged in a dot matrix format; and a touch controller that operates in a driving mode during which a driving signal for generation of a resonance signal of a stylus pen is output to the plurality of touch sensors, and obtains touch coordinate information from a detection signal input from the touch sensor during a driving mode section during which the touch controller operates in the driving mode. 
     In addition, according to a fifth exemplary embodiment of the present invention provides a touch detection method of a touch apparatus that is provided with a touch sensor that includes a plurality of first touch electrodes for obtaining a coordinate value in a first coordinate axis and a plurality of second touch electrodes for obtaining a coordinate value in a second coordinate axis that perpendicularly crosses the first coordinate axis, is provided. The touch detection method includes: entering a first driving mode section, and simultaneously outputting a driving signal for generation of a resonance signal of a stylus pen to the plurality of first touch electrodes; obtaining a first coordinate value that constitutes touch coordinate information by using a detection signal input from at least one type of touch electrode among the plurality of first touch electrodes and the plurality of second touch electrodes during the first driving mode section; entering a second driving mode section, and simultaneously outputting the driving signal to the plurality of second touch electrodes; and obtaining a second coordinate value that constitutes the touch coordinate information by using a detection signal input from the plurality of first touch electrodes and/or the plurality of second touch electrodes during the second driving mode section. 
     In the touch detection method according to the fifth exemplary embodiment, the obtaining the first coordinate value comprises obtaining the first coordinate value in the second coordinate axis among the touch coordinate information by using detection signals input from the plurality of second touch electrodes, and the obtaining the second coordinate value comprises obtaining the second coordinate value in the first coordinate axis among the touch coordinate information by using detection signals input from the plurality of first touch electrodes. 
     In the touch detection method according to the fifth exemplary embodiment, the obtaining the first coordinate value comprises obtaining the first coordinate value in the first coordinate axis among the touch coordinate information by using detection signals input from the plurality of first touch electrodes, and the obtaining the second coordinate value comprises obtaining the second coordinate value in the second coordinate axis among the touch coordinate information by using detection signals input from the plurality of second touch electrodes. 
     The touch detection method according to the fifth exemplary embodiment may further include: when entering an idle mode section after termination of the first driving mode section, disabling outputting of the driving signal; and determining a type of a touch object that generated the touch input by using a detection signal received from the plurality of first touch electrodes or the plurality of second touch electrodes during the idle mode section. 
     In addition, according to a sixth exemplary embodiment of the present invention, a touch detection method of a touch apparatus provided with a touch sensor that includes a plurality of first touch electrodes for obtaining a coordinate value in a first coordinate axis, and a plurality of second touch electrodes for obtaining a coordinate value in a second coordinate axis that perpendicularly crosses the first coordinate axis, is provided. The touch detection method includes: entering a driving mode section, and simultaneously outputting a driving signal for generation of a resonance signal of a stylus pen to the plurality of first and second touch electrode; and obtaining the touch coordinate information by using a detection signal input from at least one type of touch electrode among the plurality of first touch electrodes and the plurality of second touch electrodes during the driving mode section. 
     In the touch detection method according to the sixth exemplary embodiment, the obtaining the touch coordinate information may include: obtaining a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals received from the plurality of second touch electrodes during the driving mode section; and obtaining a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals received from the plurality of first touch electrodes during the driving mode section. 
     In the touch detection method according to the sixth exemplary embodiment, the obtaining the touch coordinate information may include: obtaining a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals received from the plurality of first touch electrodes when the driving mode section is a first driving mode section; and obtaining a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals received from the plurality of second touch electrodes when the driving mode section is a second driving mode section. 
     In the touch detection method according to the sixth exemplary embodiment, the obtaining the touch coordinate information may include: obtaining a coordinate value in the first coordinate axis among the touch coordinate information by using detection signals received from the plurality of first touch electrodes during the driving mode section, and the touch detection method may further include, when entering an idle mode during which an output of the driving signal is disabled, obtaining a coordinate value in the second coordinate axis among the touch coordinate information by using detection signals received from the plurality of second touch electrodes when the driving mode section is a second driving mode section. 
     The touch detection method according to the sixth exemplary embodiment may further include: when entering an idle mode section after termination of the driving mode section, disabling outputting of the driving signal; and determining a type of a touch object that generated the touch input by using a detection signal received from the plurality of first touch electrodes or the plurality of second touch electrodes during the idle mode section. 
     Advantageous Effects 
     The touch apparatus and the touch detection method thereof according to the present disclosure may improve touch detection performance by increasing intensity of a resonance signal generated from a resonance stylus pen. 
     In addition, the touch apparatus and the touch detection method thereof according to the present disclosure improve the signal-to-noise ratio (SNR) of an effective signal used for detecting touch coordinates, and secure sufficient touch signal processing time. 
     In addition, the touch apparatus and the touch detection method thereof according to the present disclosure can promptly determine a type of a touch object. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
         FIG.  1    schematically illustrates a touch apparatus according to an exemplary embodiment of the present invention. 
         FIG.  2    illustrates an example of touch input detection of a stylus pen of the touch apparatus according to the exemplary embodiment of the present invention. 
         FIG.  3    is provided for description of generation of a resonance signal of the stylus pen of  FIG.  2   . 
         FIG.  4    is provided for description of a touch coordinate information acquisition method of the touch apparatus according to the exemplary embodiment of the present invention. 
         FIG.  5    illustrates another example of the driving mode of the touch apparatus according to the exemplary embodiment of the present invention. 
         FIG.  6    schematically illustrates a touch detection method of the touch apparatus according to the exemplary embodiment of the present invention. 
         FIG.  7    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. 
         FIG.  8    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  7   . 
         FIG.  9    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. 
         FIG.  10    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  9   . 
         FIG.  11    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. 
         FIG.  12    shows an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  11   . 
         FIG.  13    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. 
         FIG.  14    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  13   . 
         FIG.  15    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. 
         FIG.  16    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  15   . 
         FIG.  17    illustrates another example of a touch apparatus according to another exemplary embodiment of the present invention. 
         FIG.  18    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. 
     
    
    
     MODE FOR INVENTION 
     The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. 
     In describing the present invention, parts that are not related to the description will be omitted. Like reference numerals generally designate like elements throughout the specification. 
     In addition, unless explicitly described to the contrary, the word “comprise” and variations such as “comprises” or “comprising” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements. 
     Hereinafter, a touch apparatus and a touch detection method of the touch apparatus according to exemplary embodiments will be described with reference to the accompanying drawings. 
       FIG.  1    schematically illustrates a touch apparatus according to an exemplary embodiment of the present invention, and  FIG.  2    illustrates an example of touch input detection of a stylus pen of the touch apparatus according to the exemplary embodiment of the present invention.  FIG.  3    is provided for description of generation of a resonance signal of the stylus pen of  FIG.  2   , and  FIG.  4    is provided for description of a touch coordinate information acquisition method of the touch apparatus according to the exemplary embodiment of the present invention. 
     Referring to  FIG.  1    and  FIG.  2   , a touch apparatus  100  may include a touch panel  110  and a touch controller  120 . 
     The touch panel  110  may include a substrate  111  and a touch sensor  112  that is disposed on the substrate  111 . 
     The touch sensor  112  may be used to detect a touch input (direct touch or proximity touch) by a touch object. The touch sensor  112  operates by receiving a driving signal from the touch controller  120 , and may output a detection signal corresponding to a touch detection result to the touch controller  120 . 
     The stylus pen  200  generates a resonance signal responding to the driving signal applied to the touch sensor  112 , and the touch sensor  112  may detect a touch by detecting the resonance signal generated by the stylus pen  200 . 
     For example, in  FIG.  2   , the stylus pen  200  may operate in an electrically coupled resonance (ECR) method. The ECR-type stylus pen  200  may include a conductive tip  210 , a resonance circuit  220 , a ground  230 , and a body  240 . 
     The conductive tip  210  is at least partially formed of a conductive material (e.g., metal, conductive rubber, conductive fabric, conductive silicone, etc.), and may be electrically connected to the resonance circuit  220 . 
     The resonance circuit  220  is an LC resonance circuit, and may resonant with the driving signal received from the touch sensor  112  of the touch apparatus  100 . A resonance signal (hereinafter, referred to as “pen resonance signal”) generated by the resonance circuit  220  resonating with the driving signal of the touch sensor  112  may be output to the touch sensor  112  through the conductive tip  210 . As shown in  FIG.  3   , the resonance circuit  220  may output a pen resonance signal due to resonance through the conductive tip  210  in a section in which a driving signal is input from the touch sensor  112  and some sections thereafter. The resonance circuit  220  is disposed in the body  240 , and may be electrically connected to the ground  230 . 
     Such an ECR-type stylus pen  200  may generate a touch input by transmitting the pen resonance signal generated responding to the driving signal that is applied to the touch sensor  120  to the touch sensor  112  through the electrically coupled resonance by the conductive tip  210 . Thus, the touch controller  120  may output a driving signal that includes a frequency signal (e.g., a sine wave, a square wave, and the like), which corresponds to a resonance frequency of the stylus pen  200 , to the touch sensor  112  to thereby generate the pen resonance signal of the stylus pen  200 . 
     The touch sensor  112  may include a plurality of touch electrodes for detection of a touch input. For example, in  FIG.  1   , the touch sensor  112  may include a plurality of first touch electrodes  301  and a plurality of second touch electrodes  302 . In the present document, the plurality of first touch electrodes  301  are touch electrodes for acquiring coordinate values in a first coordinate axis (e.g., Y coordinate axis), and the plurality of second touch electrodes  302  are touch electrodes for acquiring coordinate values in a second coordinate axis (e.g., X coordinate axis) that perpendicularly crosses the first coordinate axis. 
     The respective touch electrodes  301  and  302  of the touch sensor  112 , the conductive tip  210  of the stylus pen  200 , and the substrate  111  of the touch panel  110  form capacitance Cx by the ECR, and the touch sensor  112  may detect a touch input by outputting an electrical signal (detection signal) corresponding to the capacitance Cx. 
     The touch sensor  112  may be used to detect a touch input by a touch object (e.g., a user&#39;s body (a finger and the like), or a passive or active stylus pen operating by a capacitive coupling method other than the ECR method) other than the ECR-type stylus pen  20 . 
     Meanwhile, in  FIG.  2   , a case that the touch sensor  112  is used to detect a touch input of the stylus pen  200  driven by the ECR method is exemplarily illustrated, but the present invention is not limited thereto. The touch sensor  112  may be modified to detect a touch input of another type of stylus pen that generates a resonance signal responding to a driving signal applied to the touch sensor  112 , and this is well known to a person of ordinary skill in the art. 
     In the following, in order to distinguish a stylus pen operating in a manner that generates a resonance signal in response to a driving signal applied to the touch sensor  112 , as in the ECR method described above, from a passive or active type stylus pen operating in a different manner, a stylus pen that generates a resonance signal in response to a driving signal applied to the touch sensor  112  is collectively referred to as a resonant stylus pen. 
     The touch controller  120  controls driving of the touch sensor  112 , and may output touch data that includes touch coordinate information corresponding to a touch detection result of the touch sensor  112 . 
     Regardless of an operating method, when the resonance stylus pen  200  touches the touch apparatus  100 , as shown in  FIG.  3   , the resonance stylus pen  200  may output a pen resonance signal in a touch driving mode section during which a driving signal is applied to the touch sensor  112  and some sections of an idle mode section during which the driving signal is disabled. Thus, the touch controller  120  receives detection signals of touch electrodes that form the touch sensor  112  during the touch driving mode section and some sections of the idle mode section, and may acquire position information (hereinafter, referred to as touch coordinate information) of a position where a touch of the resonance stylus pen  200  is generated. 
     Referring to  FIG.  4   , a detection signal  11  received from touch electrodes during the driving mode section during which driving signals are output to the touch electrodes may not only include a signal  13  corresponding to a pen resonance signal of the resonance stylus pen  200 , but may also include a signal  12  corresponding to a driving signal applied to the touch sensor  112 . Thus, in order to acquire touch coordinate information from the detection signal  11  received from the touch sensor  112  during the driving mode section, a valid signal used in touch coordinate detection, that is, a signal corresponding to the pen resonance signal  13  of the resonance stylus pen  200 , needs to be extracted. For this, the touch controller  120  may extract a valid signal  13  from the detection signal  11  and a baseline signal  12 . Here, the baseline signal  12  may store and use the detection signal  12  received from a touch electrode when no touch is generated, or a detection signal received from a touch electrode other than a touch electrode where a current touch needs to be detected may be used. 
     That is, the touch controller  120  may acquire a valid signal component (e.g., amplitude or signal intensity) that corresponds to a resonance signal of the resonance stylus pen  200  from a signal component difference between the baseline signal  12  and a detection signal  11  that is actually received from the touch sensor  112 . 
     When the valid signal component is acquired through such a method, the touch controller  120  may acquire touch coordinate information through comparison with a predetermined threshold value. Here, signal components of the baseline signal  12  used to detect the valid signal component may be pre-acquired by measuring a detection signal output from the touch sensor  112  when no touch is generated, may be estimated from a driving signal output to the touch sensor  112  during the driving mode, or may be a detection signal received from another touch sensor in a state where no touch is generated. 
     Meanwhile, the touch sensor  112  may be used to detect a touch input by a touch object (e.g., a user&#39;s body, or a stylus pen operating by a method other than resonance, and the like) the resonance stylus pen  200 . In this case, valid signal components extracted from the detection signal of the touch sensor  112  input during the driving mode may be a signal component that corresponds to a capacitance change due to a touch by a touch object other than the resonance stylus pen  200 . Thus, the touch controller  120  may additionally perform a process for determining a type of a touch object by using the detection signal output from the touch sensor  112 . 
     For example, the touch controller  120  may use valid signal components extracted from the detection signal of the touch sensor  112 , received during the touch driving mode, to determine a type of a touch object. When a signal component corresponding to a resonance signal of the stylus pen  200  is detected from the valid signal (refer to reference numeral  13  of  FIG.  4   ) extracted from the detection signal of the touch controller  120 , the touch controller  120  may determine the touch object as a resonance stylus pen. On the contrary, when a signal component corresponding to the resonance signal of the resonance stylus pen is not detected from the valid signal  13 , the touch controller  120  may determine that the type of the touch object is not a resonant stylus pen but a user&#39;s body part or another type of stylus pen. 
     In addition, for example, the touch controller  120  may determine the type of the touch object that generated the touch input from the detection signal received from the touch sensor  112  during the idle mode section. When a touch input by the resonance stylus pen  200  occurs, the resonance signal of the resonance stylus pen  200  continues not only during the touch driving mode section, but also during some subsequent idle mode sections. Thus, the resonance signal of the resonance stylus pen  200  affects the detection signal of the touch sensor  112  even in the idle mode. Accordingly, when a touch input is detected in the touch driving mode, the touch controller  120  may determine the type of the touch object that generated the touch input by analyzing the detection signal in the subsequent idle mode section. 
     Meanwhile, in  FIG.  3   , a case in which the driving mode of the touch sensor  112  is divided into a touch driving mode that outputs a driving signal for generating a resonance signal and an idle mode is illustrated as an example, but the present invention is not limited thereto. For example, when the touch sensor  112  is commonly used to detect a touch by a resonance stylus pen and a touch by another touch object (user&#39;s body part or other type of stylus pen), the touch driving mode of the touch sensor may be divided into a normal driving mode and a resonance driving mode as shown in  FIG.  5   . 
       FIG.  5    illustrates another example of the driving mode of the touch apparatus according to the exemplary embodiment of the present invention. 
     Referring to  FIG.  5   , the driving mode of the touch sensor  112  may include a normal driving mode, which is a touch driving mode, a resonance driving mode, and an idle mode. 
     The normal driving mode is a mode during which a driving signal is applied to the touch sensor  112  for detecting a touch input by touch objects (user&#39;s body parts or other types of stylus pens) other than the resonance stylus pen. During the normal driving mode, the touch controller  120  outputs the driving signal to the touch sensor  112 , and may acquire touch coordinate information based on signal intensity of the detection signal received from the touch sensor  112 . 
     The resonance driving mode is a mode that corresponds to the touch driving mode of  FIG.  3   , and is a mode during which a driving signal is applied to the touch sensor  112  for generating a resonance signal of the resonance stylus pen. During the resonance driving mode, the touch controller  120  outputs the driving signal to the touch sensor  112 , and may acquire touch coordinate information by a touch input of the resonance stylus pen from the detection signal received from the touch sensor  112 . In addition, during the resonance driving mode, the touch controller  120  may acquire touch coordinate information corresponding to a touch input by a user&#39;s body part from the detection signal received from the touch sensor  112 . 
     Meanwhile, a frequency of the driving signal applied to the touch sensor  112  corresponds to a resonance frequency of the resonance stylus pen. For example, a frequency of the driving signal output to the touch sensor  112  during the resonance driving mode may be around 400 kHz. On the contrary, a frequency of the driving signal output to the touch sensor  112  during the normal driving mode is set to be different from the resonance frequency of the resonance stylus pen. For example, a frequency of the driving signal output to the touch sensor  112  during the normal driving mode may be set to be around 200 kHz. The frequency setting of the driving signal is only an example, and may be set to a value different from the above. 
     Referring to  FIG.  2   , impedance by the capacitance Cx is decreased as the frequency of the driving signal applied to the touch sensor  112  is increased. Accordingly, receiving sensitivity of the touch sensor  112  receiving the pen resonance signal of the resonance stylus pen  200  increases as the frequency of the driving signal applied to the touch sensor  112  increases, and the signal-to-noise ratio (SNR) of the pen resonance signal received by the touch sensor  112  may be improved. Thus, in order to detect the pen resonance signal of the resonance stylus pen, it is necessary to set the frequency of the driving signal to be as in the resonance driving mode of  FIG.  5   . 
     Meanwhile, in the resonance driving mode during which the frequency of the driving signal applied to the touch sensor  112  is set to be high, a touch input by the resonance stylus pen and a touch input by other types of touch objects (user&#39;s body parts or other types of stylus pens) both can be detected. On the other hand, in the normal driving mode during which the frequency of the driving signal applied to the touch sensor  112  is set to be relatively low compared to the resonance driving mode, even if a touch input by the resonant stylus pen occurs, a signal component corresponding to the pen resonance signal may hardly be included in the detection signal of the touch sensor  112 . 
     The idle mode is a mode during which the driving signal applied to the touch sensor  112  is disabled. When a touch input is detected in the resonance driving mode, the touch controller  120  may determine the type of the touch object that generated the touch input by analyzing a detection signal in the subsequent idle mode section. That is, when a signal component corresponding to the resonance signal of the resonant stylus pen is detected from the detection signal received from the touch sensor  112  even after entering the idle mode section, the type of the touch object may be determined as a resonant stylus pen. 
     The touch apparatus  100  having the above-described structure may be coupled to an electronic device such as a display and used as an input device. 
       FIG.  6    schematically illustrates a touch detection method of the touch apparatus according to the exemplary embodiment of the present invention. A touch detection method shown in  FIG.  6    may be executed by the touch controller  120  of the touch apparatus  100  described with reference to  FIG.  1    to  FIG.  5   . 
     Referring to  FIG.  6   , the touch apparatus  100  according to the exemplary embodiment of the present invention applies a driving signal to the touch sensor  112  (S 11 ), and receives a detection signal from the touch sensor (S 12 ) as the touch apparatus  100  enters the touch driving mode (S 10 ). 
     When receiving the detection signal from the touch sensor  112  in the touch driving mode section, the touch apparatus  100  detects an effective signal component corresponding to a pen resonance signal from the received detection signal (S 13 ), and acquires touch coordinate information by analyzing the detected effective signal component (S 14 ). 
     In S 13  and S 14 , the touch apparatus  100  acquires the effective signal component corresponding to the pen resonance signal from a signal component difference between a baseline signal and the detection signal received from the touch sensor  112 , and acquires touch coordinate information due to an ECR pen by analyzing the acquired effective signal component. 
     After that, the touch apparatus  100  enters the idle mode (S 150 ), and disables the driving signal output to the touch sensor  112  (S 16 ). 
     The touch apparatus  100  may perform continuous touch detection by repeating S 10  and S 16  while the touch apparatus  100  is driven. 
     As described above, according to the touch detection method described referring to  FIG.  6   , the touch apparatus  100  detects the touch coordinate information from the detection signal received from the touch sensor  112  for the touch driving mode during which the driving signal is output to the touch sensor  112  rather than for the idle mode during which the driving signal is not applied to the touch sensor  112 . Accordingly, compared to the conventional method of acquiring the touch coordinate information of the resonance stylus pen by receiving the detection signal while the driving signal is not applied to the touch sensor, the SNR of the effective signal used for touch coordinate detection is improved, and sufficient touch signal processing time can be secured. 
     Meanwhile, intensity of the resonance signal of the stylus pen  200 , generated responding to the driving signal of the touch sensor  112  may be increased as the number of driving channels to which the same driving signal is simultaneously applied is increased in the touch sensor  112 . Thus, in the exemplary embodiment of the present invention to be described later, the intensity of the resonance signal generated by the resonance stylus pen  200  may be increased by increasing the number of driving channels to which the driving signal is simultaneously applied. For example, the touch controller  120  may simultaneously output the same driving signal to all of the plurality of first touch electrodes  301  and/or to all of the plurality of second touch electrodes  302 . 
       FIG.  7    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. In addition,  FIG.  8    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  7   . 
     The touch detection method of  FIG.  7    is a touch detection method in a case that the touch apparatus  100  described with reference to  FIG.  1    to  FIG.  5    operates in a mutual capacitance manner, and may be performed by the touch controller  120 . In addition, first and second driving mode sections in  FIG.  7    and  FIG.  8    may be sections corresponding to the touch driving mode of  FIG.  3    or the resonance driving mode of  FIG.  5   , and first and second idle mode sections may be sections corresponding to the idle modes of  FIG.  3    and  FIG.  5   . 
     Referring to  FIG.  7    and  FIG.  8   , the touch controller  120  enters the first driving mode section (S 101 ), and simultaneously applies a driving signal for generation of a resonance signal of the resonance stylus pen  200  to all of the first touch electrodes  301  that form the touch sensor  112  (S 102 ). 
     In addition, the touch controller  120  receives detection signals from the second touch electrodes  302  during the first driving mode section (S 103 ), and acquires touch coordinate information (coordinate values in the second coordinate axis (e.g., X-coordinate axis) at a position where a touch of the resonance stylus pen  200  by using the received detection signal (S 104 ). 
     After that, when the first driving mode section is terminated and the touch controller  120  enters the first idle mode section (S 105 ), the touch controller  112  disables the driving signal output to the touch sensor  112 . Meanwhile, the touch controller  120  receives detection signals from the plurality of first touch electrodes  301  or the plurality of first and second touch electrodes  301  and  302  during the first idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signals. 
     In addition, when the first idle mode section is terminated and the touch controller  120  enters the second driving mode section (S 106 ), the touch sensor  112  simultaneously applies a driving signal for generation of a resonance signal of the resonance stylus pen  200  to all of the second touch electrodes  302  that form the touch sensor  112  (S 107 ). 
     In addition, the touch controller  120  receives a detection signal from the first touch electrode  301  during the second driving mode section (S 108 ), and acquires touch coordinate information (i.e., coordinate values of touch coordinate information (i.e., first coordinate axis (e.g., Y-coordinate axis)) at a position where a touch of the resonance stylus pen  200  is generated by using the received detection signal (S 109 ). 
     When the second driving mode section is terminated and the touch controller  120  enters the second idle node section (S 110 ), the touch controller  120  disables the driving signal output to the touch sensor  112 . Meanwhile, the touch controller  120  receives detection signals from only the plurality of second touch electrodes  302  or from all of the first and second touch electrodes  301  and  302  during the second idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signal. 
     The touch apparatus  100  may perform continuous touch detection by repeating S 101  and S 110  while the touch apparatus  100  is driven. 
     As described above, in the touch detection method described with reference to  FIG.  7    and  FIG.  8   , the same driving signal is simultaneously applied to all the first touch electrodes  301  in the first driving mode section, and the same driving signal is simultaneously applied to all the second touch electrodes  302  in the second driving mode section such that intensity of the resonance signal of the stylus pen  200 , responding to the driving signal, is improved. 
     In addition, compared to the conventional method of acquiring the touch coordinate information of the resonance stylus pen by receiving the detection signal while the driving signal is not applied to the touch sensor, the SNR of the effective signal used for touch coordinate detection is improved, and sufficient touch signal processing time can be secured by detecting the touch coordinate information from the detection signal received from the touch sensor  112  for the driving mode during which the driving signal is output to the touch sensor  112 . 
     On the other hand, in a touch apparatus operating in a mutual capacitance method, when simultaneously outputting the same driving signal for generating a resonance signal of the stylus pen  200  to all touch electrodes extending in the same direction, only the touch coordinate value for one coordinate axis can be obtained. For example, when a driving signal is simultaneously applied to the first touch electrodes  301 , the touch coordinate value of the first coordinate axis (e.g., Y-coordinate axis) divided by the first touch electrode  301  cannot be obtained, and thus only touch coordinate values at the second coordinate axis (e.g., X-coordinate axis) divided by the second touch electrode  302  can be obtained. 
     Thus, in the touch detection method described with reference to  FIG.  7    and  FIG.  8   , in order to solve the above stated problem, touch coordinate values in the second coordinate axis are obtained by using detection signals of the second touch electrodes  302  in the first driving mode section during which the driving signal is simultaneously applied to the first touch electrodes  301 , and touch coordinate values in the first coordinate axis are obtained by using detection signals of the first touch electrode  301  in the second driving mode section during which the driving signal is simultaneously applied to the second touch electrodes  302 . 
       FIG.  9    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention.  FIG.  10    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  9   . 
     The touch detection method of  FIG.  9    is a touch detection method in a case that the touch apparatus  100  described with reference to  FIG.  1    to  FIG.  4    operates in the mutual capacitance method, and may be performed by the touch controller  120 . In addition, in  FIG.  9    and  FIG.  10   , a driving mode section may be a section corresponding to the touch driving mode of  FIG.  3    or the resonance driving mode of  FIG.  5   , and an idle mode section may be a section corresponding to the idle modes of  FIG.  3    and  FIG.  5   . 
     Referring to  FIG.  9    and  FIG.  10   , the touch controller  120  enters a driving mode (S 201 ), and simultaneously applies a driving signal for generating a resonance signal of the resonance stylus pen  200  to all of the first touch electrodes  301  that form the touch sensor  112  (S 201 ). 
     In addition, the touch controller  120  receives detection signals from the second touch electrodes  302  during the driving mode section (S 203 ), and obtains touch coordinate information (i.e., coordinate values at a position in the second coordinate axis (e.g., X-coordinate axis)) at a position where a touch of the resonance stylus pen  20  is generated by using the received detection signal (S 204 ). 
     After that, the driving mode section is terminated and thus the touch controller  120  enters the idle mode section (S 205 ), and the touch controller  120  disables the driving signal output to the touch sensor  112 . In addition, the touch controller  120  receives detection signals from the first touch electrodes  301  for a predetermined time period after entering the idle mode section (S 206 ), and obtains touch coordinate information (i.e., coordinate values in the first coordinate axis (e.g., Y-coordinate axis) at a position where a touch of the stylus pen  200  is generated by using the received detection signal (S 207 ). 
     Meanwhile, the touch controller  120  receives detection signals from only the plurality of first touch electrodes  301  or from all of the first and second touch electrodes  301  and  302  during the idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signal. 
     The touch apparatus  100  may perform continuous touch detection by repeating S 201  and S 207  while the touch apparatus  100  is driven. 
     As described above, in the touch detection method described with reference to  FIG.  9    and  FIG.  10   , the same driving signal is applied to all of the first and second touch electrodes  301  and  302  in the driving mode section such that intensity of the resonance signal of the resonance stylus pen, responding to the driving signal, can be improved. 
     In addition, some touch coordinate information is obtained by processing the detection signals of the plurality of second touch electrodes  302  during the driving mode in which the driving signal is output to the touch sensor  112 , and remaining touch coordinate information is obtained by processing the detection signals of the plurality of first touch electrodes  301  during the idle mode such that the SNR of an effective signal used for touch coordinate detection can be improved, and sufficient touch signal processing time can be secured. 
     In addition, in order to solve a coordinate acquisition problem that occurs due to simultaneous application of the same driving signal to all the driving electrodes, a touch coordinate value in the second coordinate axis is obtained by using the detection signals of the second touch electrodes  302  in the driving mode section, and a touch coordinate value in the first coordinate axis is obtained by using the detection signals of the first touch electrodes  301  in some section during which a resonance signal is received in the idle mode section. 
     Meanwhile, for the touch apparatus operating in the mutual capacitance method to obtain touch coordinate information by using the touch detection methods described with reference to  FIG.  7    and  FIG.  9   , the touch apparatus needs a driving signal for generation of a resonance signal of the stylus pen  200  not only with respect to the touch electrodes operating as driving electrodes but also with respect to touch electrodes operating as detection electrodes. In addition, the touch apparatus needs to receive and process detection signals not only with respect to touch electrodes operating as detection electrodes, but also with respect to touch electrodes operating as driving electrodes. Thus, in order to implement the touch detection method described with reference to  FIG.  7    and  FIG.  9   , the touch controller  120  may be designed to enable output of a driving signal, receiving of a detection signal, and acquisition of touch coordinate information using the same for all of the plurality of first touch electrodes  301  and the plurality of second touch electrodes  302 . 
       FIG.  11    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. In addition,  FIG.  12    shows an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  11   . 
     The touch detection method of  FIG.  11    illustrates a case that the touch apparatus  100  described with reference to  FIG.  1    to  FIG.  4    operates in a self-capacitive method, and may be performed by the touch controller  120 . In addition, first and second driving mode sections in  FIG.  11    and  FIG.  12    are sections corresponding to the touch driving mode of  FIG.  3    or the resonance driving mode of  FIG.  5   , and first and second idle mode sections are sections corresponding to the idle modes of  FIG.  3    and  FIG.  5   . 
     Referring to  FIG.  11    and  FIG.  12   , the touch controller  120  enters the first driving mode section (S 301 ), and the touch controller  120  simultaneously applies a driving signal for generation of a resonance signal of the resonance stylus pen  200  to all of the first touch electrodes  301  that form the touch sensor  112  (S 302 ). 
     In addition, the touch controller  120  receives a detection signal (S 303 ) from the first touch electrodes  301  during the first driving mode section, and obtains touch coordinate information (i.e., a coordinate value in the first coordinate axis (e.g., Y-coordinate axis)) at a position where a touch of the resonance stylus pen  200  is generated by using the received detection signal (S 304 ). 
     After that, when the touch controller  120  enters the first idle mode section after termination of the first driving mode section (S 305 ), the touch controller  120  disables the driving signal output to the touch sensor  112 . Meanwhile, the touch controller  120  receives detection signals from only the plurality of second touch electrodes  302  or from all of the first and second touch electrodes  301  and  302  during the first idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signal. 
     In addition, when the touch controller  120  enters the second driving mode section after termination of the first idle mode section (S 306 ), the touch controller  120  simultaneously applies the driving signal for generation of the resonance signal of the resonance stylus pen  200  to all of the second touch electrodes  302  that form the touch sensor  112  (S 307 ). 
     In addition, the touch controller  120  receives detection signals from the second touch electrodes  302  during the second driving mode section (S 308 ), and obtains touch coordinate information (i.e., a coordinate value in the second coordinate axis (e.g., X-coordinate axis)) at a position where a touch of the resonance stylus pen  200  is generated by using the received detection signal (S 309 ). 
     In addition, when the touch controller  120  enters the second idle mode section after termination of the second driving mode section (S 310 ), the touch controller  120  disables the driving signal output to the touch sensor  112 . Meanwhile, the touch controller  120  receives detection signals from only the plurality of first touch electrodes  301  or from all of the first and second touch electrodes  301  and  302  during the second idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signal. 
     The touch apparatus  100  may perform continuous touch detection by repeating S 301  and S 310  while the touch apparatus  100  is driven. 
     As described above, in the touch detection method described with reference to  FIG.  11    and  FIG.  12   , the same driving signal is simultaneously applied to all the first touch electrodes  301  in the first driving mode section, and the same driving signal is simultaneously applied to all the second touch electrodes  302  in the second driving mode section such that intensity of the resonance signal of the stylus pen  200 , responding to the driving signal, is improved. 
     In addition, since the touch coordinate information is detected from the detection signal received from the touch sensor  112  not for the idle mode during which the driving signal is not applied to the touch sensor  112  but for the driving mode during which the driving signal is output to the touch sensor  112 , compared to the conventional method of acquiring the touch coordinate information of the resonant stylus pen by receiving the detection signal while the driving signal is not applied by the touch sensor, the SNR of the effective signal used for touch coordinate detection is improved, and sufficient touch signal processing time can be secured. 
       FIG.  13    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. In addition,  FIG.  14    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  13   . 
     The touch detection method of  FIG.  13    illustrates a case that the touch apparatus  100  described with reference to  FIG.  1    to  FIG.  4    operates in a self-capacitive method, and may be performed by the touch controller  120 . In addition, a driving mode section in  FIG.  13    and  FIG.  14    is a section corresponding to the touch driving mode of  FIG.  3    or the resonance driving mode of  FIG.  5   , and an idle mode section is a section corresponding to the idle modes of  FIG.  3    and  FIG.  5   . 
     Referring to  FIG.  13    and  FIG.  14   , the touch controller  120  enters the driving mode section (S 401 ), and the touch controller  120  simultaneously applies a driving signal for generation of a resonance signal of the resonance stylus pen  200  to all of the first and second touch electrodes  301  and  302  that form the touch sensor  112  (S 402 ). 
     In addition, the touch controller  120  receives a detection signal from all of the first and second touch electrodes  301  and  302  during the driving mode section (S 403 ), and obtains touch coordinate information (i.e., a coordinate value in the second coordinate axis (e.g., X-coordinate axis) and a coordinate value in the first coordinate axis (e.g., Y-coordinate axis)) at a position where a touch of the resonance stylus pen  200  is generated by using the received detection signal (S 404 ). 
     After that, when the touch controller  120  enters the idle mode section after termination of the driving mode section (S 405 ), the touch controller  120  disables the driving signal output to the touch sensor  112 . Meanwhile, the touch controller  120  receives detection signals from only the plurality of first touch electrodes  301  or from all of the first and second touch electrodes  301  and  302  during the idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signal. 
     The touch apparatus  100  may perform continuous touch detection by repeating S 401  and S 405  while the touch apparatus  100  is driven. 
     As described above, in the touch detection method described with reference to  FIG.  13    and  FIG.  14   , the same driving signal is simultaneously applied to all the touch electrodes  301  and  302  in the driving mode section such that intensity of the resonance signal of the stylus pen  200 , responding to the driving signal, is improved. 
     In addition, since the touch coordinate information is detected from the detection signal received from the touch sensor  112  not for the idle mode during which the driving signal is not applied to the touch sensor  112  but for the driving mode during which the driving signal is output to the touch sensor  112 , compared to the conventional method of acquiring the touch coordinate information of the resonant stylus pen by receiving the detection signal while the driving signal is not applied by the touch sensor, the SNR of the effective signal used for touch coordinate detection is improved, and sufficient touch signal processing time can be secured. 
       FIG.  15    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. In addition,  FIG.  16    illustrates an example of a driving signal output to touch electrodes according to the touch detection method of  FIG.  15   . 
     The touch detection method of  FIG.  15    illustrates a case that the touch apparatus  100  described with reference to  FIG.  1    to  FIG.  4    operates in a self-capacitive method, and may be performed by the touch controller  120 . In addition, a driving mode section in  FIG.  15    and  FIG.  16    is a section corresponding to the touch driving mode of  FIG.  3    or the resonance driving mode of  FIG.  5   , and an idle mode section is a section corresponding to the idle modes of  FIG.  3    and  FIG.  5   . 
     Referring to  FIG.  15    and  FIG.  16   , the touch controller  120  enters the first driving mode section (S 501 ), and the touch controller  120  simultaneously applies a driving signal for generation of a resonance signal of the resonance stylus pen  200  to all of the first and second touch electrodes  301  and  302  that form the touch sensor  112  (S 502 ). 
     In addition, the touch controller  120  receives a detection signal from all of the first touch electrodes  301  during the first driving mode section (S 503 ), and obtains touch coordinate information (i.e., a coordinate value in the second coordinate axis (e.g., X-coordinate axis)) at a position where a touch of the resonance stylus pen  200  is generated by using the received detection signal (S 504 ). 
     After that, when the touch controller  120  enters the idle mode section after termination of the driving mode section (S 505 ), the touch controller  120  disables the driving signal output to the touch sensor  112 . Meanwhile, the touch controller  120  receives detection signals from the second touch electrodes  302  during the first idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signal. 
     In addition, when the first idle mode section is terminated and the touch controller  120  enters the second driving mode section (S 506 ), the touch controller  120  simultaneously applies a driving signal for generation of the resonance signal of the resonance stylus pen  200  to all of the first and second touch electrodes  301  and  302  that form the touch sensor  112  (S 507 ). 
     In addition, the touch controller  120  receives the detection signal from the second touch electrodes  302  during the second driving mode section (S 508 ), and obtains touch coordinate information (i.e., a coordinate value in the second coordinate axis (e.g., X-coordinate axis)) at a position where a touch of the resonance stylus pen  200  is generated by using the received detection signal (S 509 ) 
     In addition, when the touch controller  120  enters the second idle mode section after termination of the second driving mode section (S 510 ), the touch controller  120  disables the driving signal output to the touch sensor  112 . Meanwhile, the touch controller  120  receives detection signals from only the plurality of first touch electrodes  301  during the second idle mode section, and may determine the type of the touch object that generated the touch input by analyzing the received detection signal. 
     The touch apparatus  100  may perform continuous touch detection by repeating S 501  and S 510  while the touch apparatus  100  is driven 
     As described above, in the touch detection method described with reference to  FIG.  15    and  FIG.  16   , the same driving signal is applied to all of the touch electrodes  301  and  302  in the driving mode section such that intensity of the resonance signal of the resonance stylus pen, responding to the driving signal, can be improved. 
     In addition, since the touch coordinate information is detected from the detection signal received from the touch sensor  112  not for the idle mode during which the driving signal is not applied to the touch sensor  112  but for the driving mode during which the driving signal is output to the touch sensor  112 , compared to the conventional method of acquiring the touch coordinate information of the resonant stylus pen by receiving the detection signal while the driving signal is not applied by the touch sensor, the SNR of the effective signal used for touch coordinate detection is improved, and sufficient touch signal processing time can be secured. 
       FIG.  17    illustrates another example of a touch apparatus according to another exemplary embodiment of the present invention. 
     Referring to  FIG.  17   , a touch apparatus  100 ′ includes a touch panel  110 ′ and a touch controller  120 ′, and the touch panel  110 ′ may include a substrate  111 ′ and a touch sensor (refer to reference numeral  112  of  FIG.  2   ) disposed on the substrate  111 ′. 
     The touch apparatus  100 ′ of  FIG.  17    is a touch apparatus operating in a self-capacitive method, and the touch sensor  112  may include a plurality of touch electrodes  301 ′ arranged in a dot matrix format. 
     A plurality of touch electrodes  301 ′ receive a driving signal for generation of a resonance signal of a resonance stylus pen (refer to reference numeral  200  of  FIG.  2   ) from the touch controller  120 ′, and may output a detection signal corresponding to a touch detection result to the touch controller  120 ′. 
     The touch controller  120 ′ controls driving of the plurality of touch electrodes  301 ′, and may output touch coordinate information corresponding to the touch detection result by using the detection signal input from the plurality of touch electrodes  301 ′. 
       FIG.  18    schematically illustrates a touch detection method according to another exemplary embodiment of the present invention. 
     The touch detection method illustrated in  FIG.  18    may be performed by the touch apparatus  100 ′ described with reference to  FIG.  17   . In addition, a driving mode in  FIG.  18    is a section corresponding to the touch driving mode of  FIG.  3    or the resonance driving mode of  FIG.  5   , and an idle mode section is a section corresponding to the idle modes of  FIG.  3    and  FIG.  5   . 
     Referring to  FIG.  18   , a touch controller  120 ′ enters a driving mode section (S 601 ), and simultaneously applies a driving signal for generation of a resonance signal of a stylus pen  200  to all of a plurality of touch electrodes  301 ′ that form a touch sensor  112  (S 602 ). 
     In addition, the touch controller  120  receives a detection signal from all of the plurality of touch electrodes  301 ′ during the driving mode section (S 603 ), and obtains touch coordinate information at a position where a touch of the stylus pen  200  is generated by using the received detection signal (S 604 ). 
     In the touch electrodes  301 ′ arranged in the dot matrix format, coordinate values in the corresponding first and second coordinate axes are mapped for each touch electrode. Thus, the touch controller  120  can acquire all coordinate values in the first and second coordinate axes constituting the touch coordinate information simply by detecting the touch electrode  301 ′ where the touch is generated. 
     After that, when the touch controller  120  enters an idle mode section after termination of the driving mode section (S 605 ), the touch controller  120  disables a driving signal output to the plurality of touch electrodes  301 ′. Meanwhile, the touch controller  120  may receive detection signals from the plurality of touch electrodes  301 ′ during the idle mode section, and determine the type of the touch object that generated the touch input by analyzing the received detection signals. 
     The touch apparatus  100  may perform continuous touch detection by repeating S 601  and S 605  while the touch apparatus  100  is driven. 
     As described above, in the touch detection method described with reference to  FIG.  18   , the same driving signal is simultaneously applied to all the touch electrodes  301 ′ in the driving mode section to thereby improve intensity of the resonance signal of the resonance stylus pen  200  responding to the driving signal. 
     In addition, since the touch coordinate information is detected from the detection signal received from the touch sensor  112  not for the idle mode during which the driving signal is not applied to the touch sensor  112  but for the driving mode during which the driving signal is output to the touch sensor  112 , compared to the conventional method of acquiring the touch coordinate information of the resonant stylus pen by receiving the detection signal while the driving signal is not applied by the touch sensor, the SNR of the effective signal used for touch coordinate detection is improved, and sufficient touch signal processing time can be secured. 
     The detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The range of the present invention should be determined by rational interpretation of the attached claims, and all changes within the equivalent range of the present invention are included in the range of the present invention.