Touch sensing module, display device including the same, and electronic device

Abstract

The invention relates to a touch sensing module, a display device including the touch sensing module, and an electronic device including the display device. According to one aspect of the present disclosure, a touch sensing module has a touch sensing unit including touch electrodes arranged in a touch sensing area and touch lines connected to the touch electrodes one to one; and a touch driver that detects touch position coordinates by analyzing touch sensing signals detected from the touch electrodes, in which the touch sensing unit includes: first to n-th signal selection circuit units that respectively supply touch driving signals to the touch electrodes through the touch lines and receive touch sensing signals from the touch electrodes; and first to n-th antistatic circuit units applying a constant voltage of a preset level to input / output terminals of the first to n-th signal selection circuit units, where n is a natural number equal to or greater than 1.

Description

Technical Field

[0001] This disclosure relates to touch sensing modules and display devices including the same. Background Technology

[0002] With the development of the information society, the demand for display devices has increased rapidly. Display devices are integrated into various electronic devices such as smartphones, digital cameras, laptops, navigation devices, and smart TVs.

[0003] Display devices can take the form of flat panel display devices, such as liquid crystal displays, field emission displays, and organic light-emitting displays. Among these flat panel display devices, the light-emitting display includes light-emitting elements that enable each pixel of the display panel to emit light independently. Therefore, light-emitting display devices can display images without a backlight unit that provides light to the display panel.

[0004] Recently, display devices have included touch sensing modules for detecting user touch as one of the input sources. The touch sensing module includes a touch sensing unit and a touch driver. Touch electrodes are arranged in the touch sensing unit, and the touch driver detects the amount of charge in the capacitance between the touch electrodes. The touch sensing module can be integrally formed with the image display unit of the display device, or it can be mass-produced with its mounting in front of the image display unit. Summary of the Invention

[0005] This disclosure provides a touch sensing module and a display device including the touch sensing module, the touch sensing module being able to securely protect a signal selection circuit that independently provides touch driving signals to the touch electrodes of the touch sensing unit and detects touch sensing signals.

[0006] This disclosure also provides a touch sensing module and a display device including the touch sensing module, wherein an anti-static circuit is selectively formed in the pad units of the signal input / output terminals of a signal selection circuit to minimize damage applied to the signal selection circuit.

[0007] However, the aspects of this disclosure are not limited to those set forth herein. These and other aspects of the disclosure will become apparent to those skilled in the art from the following detailed description of the disclosure.

[0008] According to one aspect of this disclosure, a touch sensing module includes: a touch sensing unit, including touch electrodes disposed in a touch sensing area and touch lines connected one-to-one with the touch electrodes; and a touch driver, which detects touch position coordinates by analyzing touch sensing signals detected from the touch electrodes, wherein the touch sensing unit includes: a first signal selection circuit unit to an nth signal selection circuit unit, which respectively provide touch driving signals to the touch electrodes through the touch lines and receive touch sensing signals from the touch electrodes; and a first antistatic circuit unit to an nth antistatic circuit unit, which apply a constant voltage of a preset magnitude to the input / output terminals of the first signal selection circuit unit to the nth signal selection circuit unit, wherein n is a natural number equal to or greater than 1.

[0009] According to another aspect of this disclosure, a display device includes: a display panel including a display area having a plurality of pixels; and a touch sensing module extending to the front of the display panel and detecting a user's touch, wherein the touch sensing module includes: a touch sensing unit including touch electrodes disposed in the touch sensing area and touch lines connected one-to-one with the touch electrodes; and a touch driver that detects touch position coordinates by analyzing touch sensing signals detected from the touch electrodes, wherein the touch sensing unit includes: a first signal selection circuit unit to an nth signal selection circuit unit that respectively provides touch driving signals to the touch electrodes through the touch lines and receives touch sensing signals from the touch electrodes; and a first antistatic circuit unit to an nth antistatic circuit unit that applies a constant voltage of a preset level to the input / output terminals of the first signal selection circuit unit to the nth signal selection circuit unit, where n is a natural number equal to or greater than 1. The touch sensing module according to embodiments of this disclosure and the display device including the touch sensing module can safely protect the signal selection circuit formed in the touch sensing unit from overvoltage and overcurrent caused by static electricity, etc.

[0010] Furthermore, since the anti-static circuit of the electrostatic circuit type is selectively formed in the pad cells of the signal input / output terminals of the signal selection circuit, the electrical damage applied to the signal selection circuit can be minimized, while the magnitude of the input / output signal is stabilized to a constant voltage.

[0011] However, the effects of this disclosure are not limited to those set forth herein. The above and other effects of this disclosure will become more apparent to those skilled in the art upon reference to the claims. Attached Figure Description

[0012] These and / or other aspects will become apparent and more readily understood from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0013] Figure 1This is a plan view of a display device according to an embodiment of the present disclosure;

[0014] Figure 2 yes Figure 1 A detailed side sectional view of the display device;

[0015] Figure 3 It is shown Figure 1 and Figure 2 A block diagram showing the electrical connections between the display panel and the driver;

[0016] Figure 4 yes Figure 1 and Figure 2 A schematic layout diagram of an embodiment of the touch sensing unit shown;

[0017] Figure 5 It is shown Figure 4 The circuit diagram shown is of the first signal selection circuit unit and the signal selection circuit and the first anti-static circuit unit according to the first embodiment.

[0018] Figure 6 It is shown Figure 4 The circuit diagrams shown are of the first signal selection circuit unit, the signal selection circuit and the first anti-static circuit unit according to the second embodiment.

[0019] Figure 7 yes Figure 5 The block diagram of the first antistatic circuit unit shown; and

[0020] Figure 8 yes Figure 7 The circuit diagrams of the second and third antistatic circuits are shown. Detailed Implementation

[0021] This disclosure will now be described more fully below with reference to the accompanying drawings, in which preferred embodiments of the disclosure are illustrated. However, this disclosure may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0022] It will be understood that when a layer is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or there can be an intervening layer. Throughout the specification, the same reference numerals denote the same parts.

[0023] It will be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the teachings of this disclosure, the first element discussed below may be referred to as the second element. Similarly, the second element may also be referred to as the first element.

[0024] Each of the features in the various embodiments of this disclosure can be combined, either partially or entirely, or with each other, and various interactions and drives are technically possible. Each embodiment can be implemented independently of each other or can be implemented together in a related manner.

[0025] In the following description, specific embodiments will be described with reference to the accompanying drawings.

[0026] Figure 1 This is a plan view of a display device 10 according to an embodiment of the present disclosure. Figure 2 yes Figure 1 A detailed side sectional view of the display device 10.

[0027] refer to Figure 1 and Figure 2 The display device 10 according to the embodiments can be applied to portable electronic devices, such as tablet personal computers (PCs), portable multimedia players (PMPs), navigation devices, ultra-mobile PCs (UMPCs), e-books, e-notebooks, mobile phones, smartphones, and mobile communication terminals. For example, the display device 10 can be used as a display unit for televisions, laptop computers, monitors, billboards, or Internet of Things (IoT) devices.

[0028] The display device 10 according to the embodiments can be classified differently depending on the display method. For example, the display device 10 can be classified and configured as a micron-sized light-emitting diode display device, a nano-sized light-emitting diode display device, a liquid crystal display (LCD) device, a plasma display panel (PDP), a field emission display (FED) device, an electrophoretic display (EPD) device, an organic light-emitting diode display device, an inorganic electroluminescent (EL) display device, or a quantum dot light-emitting display device (QED). An organic light-emitting diode display device will be described below as an example of the display device 10 according to the embodiments. Unless otherwise specified, the organic light-emitting diode display device applied to the embodiments will be simply referred to as display device 10. However, the display device 10 according to the embodiments is not limited to organic light-emitting diode display devices, and other display devices listed above or known in the art can also be applied within the spirit of the art.

[0029] The display device 10 according to the embodiments may have a rectangular shape, a square shape, a circular shape, an elliptical shape, or other quadrilateral shape in a plan view. Furthermore, when the display device 10 is a mobile device such as a tablet PC, it may have a rectangular shape with its long side positioned horizontally. However, this disclosure is not limited to this, and the long side may also be positioned vertically, or the display device 10 may be rotatably mounted so that the long side can be variably positioned in either the horizontal or vertical direction.

[0030] refer to Figure 2 The display device 10 includes a display panel 100, a data driver 200, a circuit board 300, and a touch driving circuit 400. The touch driving circuit 400 can also be called a display driver. The display panel 100 includes a display unit DU and a touch sensing unit TSU disposed on the display unit DU. The display unit DU includes a substrate SUB, a thin-film transistor layer TFTL, a light-emitting layer EML, and an encapsulation layer TFEL. Although in Figure 2 Not explicitly shown, but the display device 10 can be as follows: Figure 1 The non-display area NDA includes a first scan driver 210 and a second scan driver 211.

[0031] The display panel 100 of the display device 10 includes a display unit DU for displaying images, and a touch sensing unit TSU for detecting touches such as those from a human body part like a finger or an electronic pen is disposed on the display unit DU. The display unit DU of the display panel 100 may include multiple pixels SP and display images through the pixels SP. Furthermore, the touch sensing unit TSU of the display panel 100 may be mounted on the front of the display panel 100 or may be integrally formed with the display panel 100. The touch sensing unit TSU may include multiple touch electrodes and may use the touch electrodes to detect user touches capacitively.

[0032] The first scan driver 210 provides a gate scan signal to the pixel SP for each horizontal line via the gate line of the display unit DU for each horizontal line, based on a first gate control signal from the touch driving circuit 400. The first scan driver 210 drives the pixel SP sequentially line by line by providing gate scan signals to the gate lines for each horizontal line. Furthermore, the second scan driver 211 provides a compensation gate scan signal to the compensation gate line of the display unit DU for each horizontal line based on a second gate control signal. The second scan driver 211 controls the pixel driving voltage of the pixel SP to be output line by line by providing compensation gate scan signals to the compensation gate line for each horizontal line.

[0033] The data driver 200 may include multiple data driver integrated circuits. The data driver 200 outputs data voltages to the pixels SP of the display unit DU based on image data, using data drive control signals from the touch drive circuit 400. Specifically, the data driver integrated circuits can provide data voltages to the data lines connected to the pixels SP horizontally, one horizontal line at a time, within each horizontal cycle.

[0034] The touch driver circuit 400 can function as a main processor or be integrated with it. Therefore, the touch driver circuit 400 can control the overall function of the display device 10. For example, the touch driver circuit 400 sorts image data from external sources and provides the sorted image data to the data driver integrated circuit of the data driver 200, and controls the driving timing of the data driver 200. Furthermore, the touch driver circuit 400 controls the gate scan signal output timing of the first scan driver 210 and the compensation gate scan signal output timing of the second scan driver 211. Additionally, the touch driver circuit 400 generates data control signals to control the data voltage output timing of the data driver integrated circuit included in the data driver 200.

[0035] The touch driving circuit 400 can detect touch coordinate information included in the touch data of the touch sensing unit (TSU), and then generate digital image data based on the touch coordinate information. Furthermore, the touch driving circuit 400 can run an application indicated by an icon displayed at the user's touch coordinates. For example, the touch driving circuit 400 can receive coordinate data from an electronic pen, determine the touch coordinates of the electronic pen, and then generate digital image data based on the touch coordinates, or run an application indicated by an icon displayed at the touch coordinates of the electronic pen.

[0036] refer to Figure 2 The display panel 100 can be divided into a main region MA and a sub-region SBA. The main region MA may include a display region DA having pixels SP for displaying images and a non-display region NDA disposed around the display region DA. In the display region DA, light can be emitted from the emission region or aperture region of each pixel SP to display an image. For this purpose, each pixel SP of the display region DA may include pixel circuitry containing switching elements, a pixel defining layer defining the emission region or aperture region, and a self-emissive element.

[0037] The non-display area NDA can be any peripheral area of ​​the display area DA or an area outside the display area DA. The non-display area NDA can be defined as the edge area of ​​the main area MA of the display panel 100. In the non-display area NDA, fan-out lines (not shown) can be formed to connect the first scan driver 210 and the second scan driver 211, the data driver 200 and the touch driving circuit 400 to the display area DA.

[0038] The sub-region SBA can extend from one side of the main region MA. The sub-region SBA can be made of a flexible film that can be bent, folded, rolled, etc. For example, when the sub-region SBA is bent, it can overlap with the main region MA in the thickness direction (Z-axis direction). The sub-region SBA may include a data driver 200 and pad units connected to the circuit board 300. Although in Figure 2 It is not explicitly depicted, but the pad units are located between the circuit board 300 and the thin-film transistor layer (TFTL). Alternatively, the sub-region SBA can be omitted, and the data driver 200 and the pad units can be located in the non-display area NDA.

[0039] The data driver 200 can be formed as multiple integrated circuits and mounted on the display panel 100 using a chip-on-glass (COG) method, a chip-on-plastic (COP) method, or an ultrasonic bonding method. For example, the data driver 200 can be disposed in a sub-region SBA and can overlap with the main region MA in the thickness direction (Z-axis direction) by bending the sub-region SBA. In another example, the data driver 200 can be mounted on a circuit board 300.

[0040] The circuit board 300 can be electrically connected to the pad units of the display panel 100 via an anisotropic conductive film (ACF). For this purpose, the leads of the circuit board 300 can be electrically connected to the pad units of the display panel 100. The circuit board 300 can be a flexible printed circuit board, a rigid printed circuit board, or a flexible film such as a chip-on-film.

[0041] The touch driver circuit 400 can be mounted on the circuit board 300. The touch driver circuit 400 can be formed as an integrated circuit.

[0042] Figure 3 It is shown Figure 1 and Figure 2 A block diagram showing the electrical connection between the display panel 100 and the driver.

[0043] refer to Figure 3 Multiple pixels SP are arranged in a matrix in the display area DA. In addition, multiple gate lines GL and multiple compensation gate lines CL are arranged in the display area DA and the non-display area NDA, respectively. Each gate line GL is connected to a pixel SP corresponding to a horizontal line, and each compensation gate line CL is connected to a pixel SP corresponding to a horizontal line.

[0044] Gate line GL and compensation gate line CL can extend in the X-axis direction (which is a first horizontal direction) and can be spaced apart from each other in a first vertical direction intersecting the first horizontal direction. Gate line GL and compensation gate line CL can be arranged at regular intervals along the first vertical direction.

[0045] Based on the first gate control signal GCS1 from the touch driver circuit 400, the first scan driver 210 provides a gate scan signal to the pixel SP for each horizontal line via a gate line GL for each horizontal line. The gate line GL sequentially provides the gate scan signals generated sequentially from the first scan driver 210 in each horizontal cycle to the pixel SP line by line.

[0046] The second scan driver 211 controls the pixel driving voltage and current of the pixel SP to be output horizontally to the voltage detection line one by one. To this end, the second scan driver 211 sequentially provides compensation gate scan signals to the compensation gate line CL for each horizontal line based on the second gate control signal GCS2 from the touch driving circuit 400. The compensation gate line CL sequentially provides the compensation gate scan signals generated sequentially from the second scan driver 211 in each horizontal cycle to the pixel SP one by one.

[0047] The gate scan signal of the first scan driver 210 and the compensation gate scan signal of the second scan driver 211 can be generated alternately in different timings in different horizontal cycles. For example, the gate scan signal can be provided to the gate line GL in each horizontal cycle first, and the compensation gate scan signal can be provided to the compensation gate line CL in each subsequent horizontal cycle.

[0048] Furthermore, multiple data lines DL, each connected to a vertically aligned pixel SP, are arranged in the display area DA and the non-display area NDA. The data lines DL are electrically connected to the data driver 200. The data voltage determines the emission brightness of each pixel SP. Additionally, multiple voltage detection lines VDL, each connected to a vertically aligned pixel SP, are arranged in the display area DA and the non-display area NDA. The voltage detection lines VDL are electrically connected to the data driver 200. For horizontally aligned pixels SP, a pixel driving voltage is shared with the voltage detection lines VDL in response to a compensation gate scan signal input in each horizontal cycle. Therefore, the data driver 200 receives the pixel driving voltage and current of each pixel SP horizontally via the voltage detection lines VDL.

[0049] Specifically, the data driver integrated circuit of the data driver 200 receives and senses the pixel driving voltage and current for each horizontal line of the pixel SP in each horizontal cycle via the voltage detection line VDL. For example, the data driver integrated circuit can sequentially sense the pixel driving voltage and current received from the pixel SP for each horizontal line in each horizontal cycle.

[0050] The data-driven integrated circuit generates voltage sensing data or current sensing data by performing analog-to-digital modulation on the pixel driving voltage and current of the sensed pixel SP according to the level of the pixel driving voltage and the amount of the current. The data-driven integrated circuit transmits the voltage sensing data and current sensing data to the touch driving circuit 400 in units of at least one horizontal line.

[0051] The touch driving circuit 400 can receive digital image data RGB DATA and timing synchronization signal TCDATA from an external source. The touch driving circuit 400 sorts the externally input digital image data RGB DATA in units of at least one frame according to the resolution of the display area DA. Then, the touch driving circuit 400 sequentially provides the sorted image data to the data driving integrated circuit of the data driver 200 in units of at least one horizontal line. Furthermore, the touch driving circuit 400 controls the operation timing of the data driver 200 by generating a data driving control signal DCS based on the timing synchronization signal TC DATA. Additionally, the touch driving circuit 400 independently controls the operation timing of the first scan driver 210 and the second scan driver 211 by generating a first gate control signal GCS1 and a second gate control signal GCS2.

[0052] The data driver integrated circuit of the data driver 200 provides data voltage according to image data DATA to the data line DL of the display unit DU based on the data driver control signal DCS. Here, the data driver integrated circuit can provide data voltage to the data line DL connected to the pixel SP one horizontal line at a time in each horizontal cycle.

[0053] Figure 4 yes Figure 1 and Figure 2 The diagram shows a schematic layout of an embodiment of the touch sensing unit (TSU).

[0054] refer to Figure 4 The touch sensing unit (TSU) includes touch electrodes SE, touch lines SL, first signal selection circuit units MU1 to nth signal selection circuit units MUn, first anti-static circuit units ESD1 to nth anti-static circuit units ESDn, and a touch driver that detects the touch position coordinates by analyzing the touch sensing signals. Since the touch driver is formed as an integrated circuit, it is integrally formed with the touch driving circuit 400.

[0055] Specifically, the main region MA of the touch sensing unit TSU includes a touch sensing region TSA for detecting user touches and a touch peripheral region TPA disposed around the touch sensing region TSA. The touch sensing region TSA can be connected to... Figures 1 to 3 The display area DA overlaps, and the touch peripheral area TPA can overlap with the non-display area NDA.

[0056] Multiple touch electrodes SE can be formed in the touch sensing area TSA, and these touch electrodes SE can be arranged in a matrix structure in a planar view. The touch electrodes SE are connected one-to-one to touch lines SL extending from the touch sensing area TSA into the touch periphery area TPA. The touch lines SL extend from a corresponding touch electrode SE in the touch sensing area TSA into the touch periphery area TPA.

[0057] exist Figure 4 The diagram illustrates a structure where each of the touch electrodes SE is formed in a rectangular planar shape as an example. However, this disclosure is not limited thereto. For example, the touch electrodes SE may also be formed in planar shapes other than rectangles, such as rhombuses, squares, polygons other than quadrilaterals, circles, or ellipses.

[0058] The touch electrodes SE are connected to the touch lines SL extending in one side direction of the touch sensing area TSA, so as to receive touch drive signals through the touch lines SL.

[0059] Each touch line SL that passes through a portion of the touch periphery region TPA is connected to any one of the first signal selection circuit units MU1 to the nth signal selection circuit unit MUn formed in the sub-region SBA of the display panel 100. For example, each touch line SL that passes through the area between the touch electrodes SE is connected to any one of the first signal selection circuit units MU1 to the nth signal selection circuit unit MUn formed in the sub-region SBA. In this case, the touch line SL can be connected one-to-one to the first touch pad and the second touch pad provided in the pad unit. Here, n is a natural number equal to or greater than 1, and n (or the number of signal selection circuit units) can vary depending on the number of touch electrodes SE.

[0060] The first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn respectively provide touch drive signals to the touch electrode SE via the touch line SL, and receive touch sensing signals from the touch electrode SE. For example, the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn respectively provide touch drive signals to the touch electrode SE via the touch line SL within a first preset period. Furthermore, they respectively detect the touch sensing signals received from the touch electrode SE via the touch line SL within a second preset period. Here, the first preset period (or first cycle) and the second preset period (or second cycle) can be preset in units of at least one frame period.

[0061] Each of the first signal selection circuit units MU1 to the nth signal selection circuit unit MUn includes a first signal selection circuit to an nth signal selection circuit. For example, the first signal selection circuit unit MU1 includes a first signal selection circuit to an nth signal selection circuit that are connected one-to-one to the touch electrode SE via touch lines SL. Similarly, the nth signal selection circuit unit MUn also includes a first signal selection circuit to an nth signal selection circuit that are connected one-to-one to the touch electrode SE via touch lines SL. As mentioned above, n is a natural number equal to or greater than 1, and n (or the number of signal selection circuits) can vary depending on the number of touch electrodes SE.

[0062] Each of the first signal selection circuits MU1 to the nth signal selection circuit units MUn can receive touch drive signals of different voltage levels through a separate power supply unit. Then, each of the first signal selection circuits to the nth signal selection circuit can, in response to a touch control signal input from the touch drive circuit 400 in the first cycle, provide any one of the touch drive signals to the touch line SL and the touch electrode SE connected one-to-one with the touch line SL.

[0063] On the other hand, in response to a touch control signal input from the touch driving circuit 400 in the second cycle, each of the first to nth signal selection circuits electrically connects the one-to-one connected touch line SL and touch electrode SE to the touch sensing signal output line. That is, each of the first to nth signal selection circuits can control the touch sensing voltage of the touch electrode SE to be transmitted to the touch line SL and the touch sensing signal output line in response to the touch control signal input from the touch driving circuit 400 in the second cycle.

[0064] The first anti-static circuit unit ESD1 to the nth anti-static circuit unit ESDn can be connected one-to-one to the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn, and can apply a preset level constant voltage to the signal input / output lines (or input / output lines or input / output terminals) of the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn.

[0065] Each of the first antistatic circuit unit ESD1 to the nth antistatic circuit unit ESDn includes at least one antistatic circuit, which applies a preset level constant voltage to at least one of the signal input / output lines (or input / output terminals) of the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn.

[0066] For example, at least one antistatic circuit included in each of the first antistatic circuit units ESD1 to the nth antistatic circuit unit ESDn can be connected to at least one of the signal input / output lines (or input / output terminals) of the first signal selection circuit to the nth signal selection circuit included in the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn.

[0067] At least one anti-static circuit applies a preset constant voltage to at least one of the signal input / output lines (or input / output terminals) of the first to nth signal selection circuits. Therefore, under constant voltage conditions, at least one of the signal input / output lines (or input / output terminals) of the first to nth signal selection circuits can change its voltage level in real time according to changes in the voltage level of the input / output signal. Thus, even if overcurrent or overvoltage caused by static electricity is applied to the signal input / output lines (or input / output terminals) of the first to nth signal selection circuits, the signal input / output lines (or input / output terminals) of the first to nth signal selection circuits can quickly change to a constant voltage state, thereby stably maintaining their voltage levels.

[0068] Figure 5 It is shown Figure 4 The circuit diagram shown is of the first signal selection circuit unit MU1 and the signal selection circuit and the first anti-static circuit unit ESD1 according to the first embodiment.

[0069] refer to Figure 5 Each of the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn may include the first signal selection circuit MUX1 to the nth signal selection circuit MUXn.

[0070] For example, the first signal selection circuit unit MU1 may include first signal selection circuits MUX1 to nth signal selection circuits MUXn, which are connected one-to-one to the touch electrode SE via touch lines SL. When the first signal selection circuits MUX1 to nth signal selection circuits MUXn are arranged in a 24×2 array, the first signal selection circuit unit MU1 may include 48 signal selection circuits MUX1 to MUXn.

[0071] Similarly, the nth signal selection circuit unit MUn also includes first signal selection circuits MUX1 to nth signal selection circuits MUXn, which are connected one-to-one to the touch electrode SE via touch lines SL. In this way, when the first signal selection circuits MUX1 to nth signal selection circuits MUXn are arranged in a 24×2 array, each of the signal selection circuit units MU1 to MUn can include 48 signal selection circuits MUX1 to MUXn.

[0072] Each of the signal selection circuits MUX1 to MUXn may include a plurality of switching elements T1 to T4 electrically connected to each other in a combination of series and parallel configurations.

[0073] For example, the first signal selection circuit MUX1 includes a first switching element T1 and a second switching element T2. The first electrode terminal of the first switching element T1 and the first electrode terminal of the second switching element T2 are connected in parallel to the touch line SL, and the touch line SL is successively connected to the touch electrode SE. The first signal selection circuit MUX1 also includes a third switching element T3 and a fourth switching element T4. The first electrode terminal of the third switching element T3 and the first electrode terminal of the fourth switching element T4 are connected in parallel to the second electrode terminal of the first switching element T1.

[0074] The first electrode terminal of the first switching element T1 is connected in parallel with the first electrode terminal of the second switching element T2 to any touch line SL connected to the touch electrode SE, and the second electrode terminal of the first switching element T1 is connected to the first electrode terminal of the third switching element T3 and the first electrode terminal of the fourth switching element T4. In addition, the gate electrode terminal of the first switching element T1 is connected to the first switching channel terminal SC1 to receive the first touch control signal input from the touch driving circuit 400.

[0075] The first electrode terminal of the second switching element T2 is connected in parallel with the first electrode terminal of the first switching element T1 to any one of the touch lines SL that are successively connected to the touch electrode SE, and the second electrode terminal of the second switching element T2 is connected to the second touch drive signal input channel CH3. In addition, the gate electrode terminal of the second switching element T2 is connected to the second switching channel terminal SC2 to receive the second touch control signal input from the touch drive circuit 400.

[0076] The first electrode terminal of the third switching element T3 and the first electrode terminal of the fourth switching element T4 are connected in parallel to the second electrode terminal of the first switching element T1, and the second electrode terminal of the third switching element T3 is connected to the first touch drive signal input channel CH2. Furthermore, the gate electrode terminal of the third switching element T3 is connected to the third switching channel terminal SC3 to receive the third touch control signal input from the touch drive circuit 400.

[0077] The first electrode terminal of the fourth switching element T4 is connected in parallel with the first electrode terminal of the third switching element T3 to the second electrode terminal of the first switching element T1, and the second electrode terminal of the fourth switching element T4 is connected to the touch sensing signal output line and the touch sensing signal output channel CH1. Furthermore, the gate electrode terminal of the fourth switching element T4 is connected to the fourth switching channel terminal SC4 to receive sensing control signals from the touch driving circuit 400.

[0078] The first switching element T1 is turned on in the first cycle in response to a first touch control signal input from the touch driving circuit 400 through the first switching channel terminal SC1. When turned on, the first switching element T1 allows a first touch driving signal input to the second electrode terminal of the first switching element T1 through the third switching element T3 to be transmitted to the first electrode terminal of the first switching element T1 and the touch line SL.

[0079] The second switching element T2 is turned on in the first cycle in response to a second touch control signal input from the touch driving circuit 400 through the second switching channel terminal SC2 to the gate electrode terminal of the second switching element T2. When turned on, the second switching element T2 allows the second touch driving signal input through the second touch driving signal input channel CH3 to the second electrode terminal of the second switching element T2 to be transmitted to the first electrode terminal of the second switching element T2 and the touch line SL.

[0080] The touch driving circuit 400 can selectively generate a first touch control signal or a second touch control signal in the first cycle and transmit the first touch control signal or the second touch control signal to the first switch channel terminal SC1 or the second switch channel terminal SC2, and can transmit a third touch control signal to the third switch channel terminal SC3 in the first cycle.

[0081] The third switching element T3 is turned on in the first cycle in response to a third touch control signal input from the touch driving circuit 400 through the third switching channel terminal SC3 to the gate electrode terminal of the third switching element T3. When turned on, the third switching element T3 allows the first touch driving signal input to the first touch driving signal input channel CH2 to be transmitted to the second electrode terminal of the first switching element T1.

[0082] In the second cycle, the touch driving circuit 400 provides a first touch control signal to the first switch channel terminal SC1 and the gate electrode terminal of the first switch element T1, and simultaneously provides a sensing control signal to the fourth switch channel terminal SC4 and the gate electrode terminal of the fourth switch element T4.

[0083] Therefore, the first switching element T1 is turned on in the second cycle in response to the first touch control signal input from the touch driving circuit 400 through the first switching channel terminal SC1. When turned on, the first switching element T1 electrically connects the touch line SL connected to its first electrode terminal and the first electrode terminal of the fourth switching element T4.

[0084] Simultaneously, the fourth switching element T4 is turned on by a sensing control signal input from the touch driving circuit 400 through the fourth switching channel terminal SC4 to the gate electrode terminal of the fourth switching element T4 during the second cycle. When turned on, the fourth switching element T4 electrically connects the second electrode terminal of the first switching element T1 to the touch sensing signal output line and the touch sensing signal output channel CH1. Therefore, during the second cycle, the touch sensing voltage of the touch electrode SE can be transmitted to the touch driving circuit 400 through the touch line SL, the touch sensing signal output line, and the touch sensing signal output channel CH1.

[0085] refer to Figure 5 Each of the first antistatic circuit unit ESD1 to the nth antistatic circuit unit ESDn includes one or more antistatic circuits D1 to D6, which apply a constant voltage of a preset level to one or more of the signal input / output lines (or input / output terminals) of the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn.

[0086] For example, the first antistatic circuit D1 of the first antistatic circuit unit ESD1 is connected in parallel with the first switching channel terminal SC1 to the gate electrode terminal of the first switching element T1 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0087] The second antistatic circuit D2 and the second switching channel terminal SC2 are connected in parallel to the gate electrode terminal of the second switching element T2 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0088] The third antistatic circuit D3 and the second touch drive signal input channel CH3 are connected in parallel to the second electrode terminal of the second switching element T2, which is included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0089] The fourth anti-static circuit D4 is connected in parallel with the third switching channel terminal SC3 to the gate electrode terminal of the third switching element T3 included in each of the first signal selection circuits MUX1 to the nth signal selection circuits MUXn.

[0090] The fifth anti-static circuit D5 is connected in parallel with the first touch drive signal input channel CH2 to the second electrode terminal of the third switching element T3, which is included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0091] The sixth antistatic circuit D6 is connected in parallel with the fourth switching channel terminal SC4 to the gate electrode terminal of the fourth switching element T4 included in each of the first signal selection circuits MUX1 to the nth signal selection circuits MUXn.

[0092] Figure 6 It is shown Figure 4 The circuit diagram shown is of the first signal selection circuit unit MU1 and the signal selection circuit and the first anti-static circuit unit ESD1 according to the second embodiment.

[0093] refer to Figure 6 Each of the first antistatic circuit unit ESD1 to the nth antistatic circuit unit ESDn includes one or more antistatic circuits D1 to D4, which apply a constant voltage of a preset level to one or more of the signal input / output lines (or input / output terminals) of the first signal selection circuit unit MU1 to the nth signal selection circuit unit MUn.

[0094] In other words, the anti-static circuits D1 to D4 included in each of the first anti-static circuit units ESD1 to the nth anti-static circuit unit ESDn can be respectively connected to the gate electrode terminals of the first switching element T1 to the fourth switching element T4 included in each of the first signal selection circuits MUX1 to the nth signal selection circuits MUXn.

[0095] For example, the first antistatic circuit D1 of the first antistatic circuit unit ESD1 is connected in parallel with the first switching channel terminal SC1 to the gate electrode terminal of the first switching element T1 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0096] The second antistatic circuit D2 and the second switching channel terminal SC2 are connected in parallel to the gate electrode terminal of the second switching element T2 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0097] The third antistatic circuit D3 and the third switching channel terminal SC3 are connected in parallel to the gate electrode terminal of the third switching element T3, which is included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0098] The fourth anti-static circuit D4 and the fourth switching channel terminal SC4 are connected in parallel to the gate electrode terminal of the fourth switching element T4, which is included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0099] Figure 7 yes Figure 5 The block diagram shown is of the first antistatic circuit unit ESD1.

[0100] refer to Figure 5 and Figure 7 The first anti-static circuit D1 of the first anti-static circuit unit ESD1 can be connected to the gate electrode terminal of the first switching element T1 and the connection line T1G of the first switching channel terminal SC1 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn.

[0101] The second anti-static circuit D2 can be connected to the gate electrode terminal of the second switching element T2 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn, and the connection line T2G of the second switching channel terminal SC2.

[0102] The third anti-static circuit D3 can be connected to the second electrode terminal of the second switching element T2 included in each of the first signal selection circuits MUX1 to the nth signal selection circuits MUXn, and the connection line T2S of the second touch drive signal input channel CH3.

[0103] The fourth anti-static circuit D4 can be connected to the gate electrode terminal of the third switching element T3 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn, as well as the connection line of the third switching channel terminal SC3.

[0104] The fifth anti-static circuit D5 can be connected to the second electrode terminal of the third switching element T3 included in each of the first signal selection circuits MUX1 to the nth signal selection circuit MUXn, and the connection line T3S of the first touch drive signal input channel CH2.

[0105] The sixth anti-static circuit D6 can be connected to the gate electrode terminal of the fourth switching element T4 included in each of the first signal selection circuits MUX1 to the nth signal selection circuits MUXn, and the connection line T4G of the fourth switching channel terminal SC4.

[0106] Figure 8 yes Figure 7 The circuit diagrams of the second antistatic circuit D2 and the third antistatic circuit D3 are shown.

[0107] refer to Figure 7 and Figure 8 The first antistatic circuit unit ESD1 to the nth antistatic circuit unit ESDn includes one or more antistatic circuits D1 to D6, each comprising a plurality of constant voltage application type thin film transistors arranged in parallel to apply a high potential constant voltage from the high potential voltage source VGH toward the input / output line, and a plurality of constant voltage output type thin film transistors arranged in parallel to apply a high potential constant voltage from the input / output line toward the low potential voltage source VGL.

[0108] Specifically, refer to Figure 8 The first thin-film transistor T11 can be connected in a diode structure, such that the first electrode terminal is connected to the high potential voltage source VGH, and the second electrode terminal is connected to the input / output line, so that the high potential constant voltage of the high potential voltage source VGH is applied to the input / output line.

[0109] The second thin-film transistor T12 can be connected in parallel with the first thin-film transistor T11, and the second thin-film transistor T12 can be connected in a diode structure, such that the first electrode terminal is connected to the input / output line, and the second electrode terminal is connected to the high potential voltage source VGH, so that the high potential constant voltage of the high potential voltage source VGH is applied toward the input / output line.

[0110] The third thin-film transistor T21 can be connected in a diode structure, such that the first electrode terminal is connected to the low potential voltage source VGL, and the second electrode terminal is connected to the input / output line, such that the high potential constant voltage of the input / output line is applied toward the low potential voltage source VGL.

[0111] The fourth thin-film transistor T22 can be connected in parallel with the third thin-film transistor T21, and the fourth thin-film transistor T22 can be connected in a diode structure, such that the first electrode terminal is connected to the input / output line, and the second electrode terminal is connected to the low potential voltage source VGL, so that the high potential constant voltage of the input / output line is applied toward the low potential voltage source VGL.

[0112] The fifth thin-film transistor T31 can be connected in a diode structure, such that the first electrode terminal is connected to the low potential voltage source VGL, and the second electrode terminal is connected to the input / output line, such that the high potential constant voltage of the input / output line is applied toward the low potential voltage source VGL.

[0113] The sixth thin-film transistor T32 can be configured in parallel with the fifth thin-film transistor T31, and the sixth thin-film transistor T32 can be connected in a diode configuration such that the first electrode terminal is connected to the input / output line and the second electrode terminal is connected to the low potential voltage source VGL, so that the high potential constant voltage of the input / output line is applied toward the low potential voltage source VGL.

[0114] The seventh thin-film transistor T41 can be connected in a diode structure, such that the first electrode terminal is connected to the high potential voltage source VGH, and the second electrode terminal is connected to the input / output line, so that the high potential constant voltage of the high potential voltage source VGH is applied toward the input / output line.

[0115] The eighth thin-film transistor T42 can be connected in parallel with the seventh thin-film transistor T41, and the eighth thin-film transistor T42 can be connected in a diode structure such that the first electrode terminal is connected to the input / output line, and the second electrode terminal is connected to the high potential voltage source VGH, so that the high potential constant voltage of the high potential voltage source VGH is applied toward the input / output line.

[0116] In this way, the antistatic circuits D1 to D6 included in each of the first antistatic circuit units ESD1 to the nth antistatic circuit unit ESDn can safely protect the first signal selection circuits MUX1 to the nth signal selection circuits MUXn formed in the touch sensing unit TSU from the effects of overvoltage and overcurrent caused by static electricity.

[0117] Furthermore, since the anti-static circuits D1 to D6 of the electrostatic circuit type are selectively formed in the pad units of the signal input / output terminals of the first signal selection circuit MUX1 to the nth signal selection circuit MUXn, the electrical damage applied to the signal selection circuits MUX1 to MUXn can be minimized, while the level of the input / output signal is stabilized to a constant voltage level.

[0118] In concluding this detailed description, those skilled in the art will understand that many variations and modifications can be made to the preferred embodiments without substantially departing from the principles of this disclosure. Therefore, the preferred embodiments disclosed herein are used in a general and descriptive sense only and not for purposes of limitation.

Claims

1. A touch sensing module, comprising: A touch sensing unit includes touch electrodes arranged in a touch sensing area and touch lines connected one-to-one with the touch electrodes; as well as The touch driver detects the touch position coordinates by analyzing the touch sensing signals detected from the touch electrodes. The touch sensing unit includes: The first signal selection circuit unit to the nth signal selection circuit unit respectively provide touch driving signals to the touch electrode through the touch line, and receive the touch sensing signal from the touch electrode; and The first antistatic circuit unit to the nth antistatic circuit unit apply a constant voltage of a preset level to the input / output terminals of the first signal selection circuit unit to the nth signal selection circuit unit, where n is a natural number equal to or greater than 1.

2. The touch sensing module according to claim 1, wherein, Each of the first to the nth signal selection circuit units includes a first to nth signal selection circuit connected one-to-one with the touch electrode via the touch line. The first to the nth signal selection circuits receive touch drive signals of different voltage levels through a power supply unit. Each of the first to the nth signal selection circuits, in response to a touch control signal input in the first cycle, provides any one of the touch drive signals to a touch line among the touch lines and a touch electrode among the touch electrodes connected to the touch line. Each of the first to the nth signal selection circuits, in response to a touch control signal input in the second cycle, electrically connects the touch line and the touch electrode to the touch sensing signal output line.

3. The touch sensing module according to claim 2, wherein, The first antistatic circuit unit to the nth antistatic circuit unit are connected one-to-one to the first signal selection circuit unit to the nth signal selection circuit unit, and a constant voltage of a preset level is applied to the signal input / output lines of the first signal selection circuit unit to the nth signal selection circuit unit.

4. The touch sensing module according to claim 2, wherein, Each of the first to the nth antistatic circuit units includes at least one antistatic circuit, which applies a constant voltage of a preset level to at least one of the signal input / output lines of the first to the nth signal selection circuit units. The at least one anti-static circuit is connected to at least one signal input / output line among the signal input / output lines from the first signal selection circuit to the nth signal selection circuit, and applies a constant voltage of a preset level to the at least one signal input / output line.

5. The touch sensing module according to claim 2, wherein, Each of the first to the nth signal selection circuits includes: A first switching element and a second switching element, wherein the first electrode terminals of the first switching element and the second switching element are connected in parallel to a touch line connected to either touch electrode; and A third switching element and a fourth switching element, wherein the first electrode terminal of the third switching element and the first electrode terminal of the fourth switching element are connected in parallel to the second electrode terminal of the first switching element.

6. The touch sensing module according to claim 5, wherein, The first electrode terminal of the first switching element and the first electrode terminal of the second switching element are connected in parallel to either touch line. The second electrode terminal of the first switching element is connected to the first electrode terminal of the third switching element and the first electrode terminal of the fourth switching element. The gate electrode terminal of the first switching element is connected to the first switching channel terminal to receive a first touch control signal input from the display driver. The second electrode terminal of the second switching element is connected to the second touch drive signal input channel. The gate electrode terminal of the second switching element is connected to the second switching channel terminal to receive a second touch control signal input from the display driver. The second electrode terminal of the third switching element is connected to the first touch drive signal input channel. The gate electrode terminal of the third switching element is connected to the third switching channel terminal to receive a third touch control signal input from the display driver. The second electrode terminal of the fourth switching element is connected to the touch sensing signal output line and the touch sensing signal output channel, and The gate electrode terminal of the fourth switching element is connected to the fourth switching channel terminal to receive a sensing control signal input from the display driver.

7. The touch sensing module according to claim 6, wherein, The display driver: During the first cycle, the first touch control signal or the second touch control signal is selectively generated and transmitted to the first switch channel terminal or the second switch channel terminal. In the first cycle, the third touch control signal is transmitted to the third switch channel terminal, and During the second cycle, the first touch control signal is provided to the first switch channel terminal and the gate electrode terminal of the first switch element, and the sensing control signal is simultaneously provided to the fourth switch channel terminal and the gate electrode terminal of the fourth switch element.

8. The touch sensing module according to claim 7, wherein, The first switching element is turned on in response to the first touch control signal input from the display driver via the first switching channel terminal during the first cycle, and while the first switching element is turned on, it receives a first touch drive signal from the third switching element at the second electrode terminal of the first switching element and transmits the first touch drive signal to the touch line. The second switching element is turned on during the first cycle in response to a second touch control signal input from the display driver to the gate electrode terminal of the second switching element via the second switching channel terminal. While the second switching element is turned on, it receives a second touch drive signal from the second touch drive signal input channel at the second electrode terminal of the second switching element and transmits the second touch drive signal to the touch line. The third switching element is turned on in response to the third touch control signal input from the display driver to the gate electrode terminal of the third switching element through the third switching channel terminal during the first cycle, and in the state where the third switching element is turned on, it receives the first touch driving signal at the first touch driving signal input channel and transmits the first touch driving signal to the second electrode terminal of the first switching element.

9. The touch sensing module according to claim 7, wherein, The first switching element is turned on in response to the first touch control signal input from the display driver via the first switching channel terminal during the second cycle, and the touch line connected to the first electrode terminal of the first switching element is electrically connected to the first electrode terminal of the fourth switching element. The fourth switching element is turned on during the second cycle via the sensing control signal input from the display driver to the gate electrode terminal of the fourth switching element through the fourth switching channel terminal, and the second electrode terminal of the first switching element is electrically connected to the touch sensing signal output line and the touch sensing signal output channel.

10. The touch sensing module according to claim 6, wherein, Each of the first to the nth antistatic circuit units includes at least one antistatic circuit, which applies a constant voltage of a preset level to at least one of the signal input / output lines of the first to the nth signal selection circuit units.

11. The touch sensing module according to claim 10, wherein, Each of the first to the nth antistatic circuit units includes: A first anti-static circuit is connected to the gate electrode terminal and the first switching channel terminal of the first switching element included in each of the first signal selection circuits to the nth signal selection circuit; The second anti-static circuit is connected to the gate electrode terminal and the second switching channel terminal of the second switching element included in each of the first signal selection circuit to the nth signal selection circuit; The third anti-static circuit is connected to the second electrode terminal of the second switching element included in each of the first to nth signal selection circuits and the second touch drive signal input channel; A fourth anti-static circuit is connected to the gate electrode terminal and the third switching channel terminal of the third switching element included in each of the first to the nth signal selection circuits; A fifth anti-static circuit is connected to the second electrode terminal of the third switching element included in each of the first to nth signal selection circuits and the first touch drive signal input channel; and A sixth anti-static circuit is connected to the gate electrode terminal and the fourth switching channel terminal of the fourth switching element included in each of the first to the nth signal selection circuits.

12. The touch sensing module according to claim 10, wherein, Each of the first to the nth antistatic circuit units includes: A first anti-static circuit is connected to the gate electrode terminal and the first switching channel terminal of the first switching element included in each of the first signal selection circuits to the nth signal selection circuit; The second anti-static circuit is connected to the gate electrode terminal and the second switching channel terminal of the second switching element included in each of the first signal selection circuit to the nth signal selection circuit; A third anti-static circuit is connected to the gate electrode terminal and the third switching channel terminal of the third switching element included in each of the first to nth signal selection circuits; and A fourth anti-static circuit is connected to the gate electrode terminal and the fourth switching channel terminal of the fourth switching element included in each of the first to the nth signal selection circuits.

13. The touch sensing module according to claim 10, wherein, The at least one antistatic circuit includes: A first thin-film transistor is connected in a diode structure such that the first electrode terminal of the first thin-film transistor is connected to a high potential voltage source, and the second electrode terminal of the first thin-film transistor is connected to an input / output line, such that a high potential constant voltage from the high potential voltage source is applied to the input / output line; A second thin-film transistor is arranged in parallel with the first thin-film transistor and connected in the diode structure, such that the first electrode terminal of the second thin-film transistor is connected to the input / output line, and the second electrode terminal of the second thin-film transistor is connected to the high potential voltage source, such that the high potential constant voltage of the high potential voltage source is applied toward the input / output line; A third thin-film transistor is connected in the diode structure such that the first electrode terminal of the third thin-film transistor is connected to a low-potential voltage source, and the second electrode terminal of the third thin-film transistor is connected to the input / output line such that a high-potential constant voltage is applied to the low-potential voltage source on the input / output line. A fourth thin-film transistor is arranged in parallel with the third thin-film transistor and connected in the diode structure, such that the first electrode terminal of the fourth thin-film transistor is connected to the input / output line and the second electrode terminal of the fourth thin-film transistor is connected to the low potential voltage source, such that the high potential constant voltage of the input / output line is applied toward the low potential voltage source; A fifth thin-film transistor is connected in the diode structure such that the first electrode terminal of the fifth thin-film transistor is connected to the low potential voltage source, and the second electrode terminal of the fifth thin-film transistor is connected to the input / output line such that the high potential constant voltage of the input / output line is applied toward the low potential voltage source; A sixth thin-film transistor is arranged in parallel with the fifth thin-film transistor and connected in the diode structure, such that the first electrode terminal of the sixth thin-film transistor is connected to the input / output line and the second electrode terminal of the sixth thin-film transistor is connected to the low potential voltage source, such that the high potential constant voltage of the input / output line is applied toward the low potential voltage source; A seventh thin-film transistor, connected in the diode structure, such that the first electrode terminal of the seventh thin-film transistor is connected to the high-potential voltage source, and the second electrode terminal of the seventh thin-film transistor is connected to the input / output line, such that the high-potential constant voltage of the high-potential voltage source is applied toward the input / output line; and An eighth thin-film transistor is arranged in parallel with the seventh thin-film transistor and connected in the diode structure such that the first electrode terminal of the eighth thin-film transistor is connected to the input / output line and the second electrode terminal of the eighth thin-film transistor is connected to the high potential voltage source such that the high potential constant voltage of the high potential voltage source is applied toward the input / output line.

14. A display device, comprising: The display panel includes a display area with multiple pixels arranged in it; as well as A touch sensing module extends to the front of the display panel and detects the user's touch. The touch sensing module includes: A touch sensing unit includes touch electrodes disposed in a touch sensing area and touch lines connected one-to-one with the touch electrodes; and The touch driver detects the touch position coordinates by analyzing the touch sensing signals detected from the touch electrodes. The touch sensing unit includes: The first signal selection circuit unit to the nth signal selection circuit unit respectively provide touch driving signals to the touch electrode through the touch line, and receive the touch sensing signal from the touch electrode; and The first antistatic circuit unit to the nth antistatic circuit unit apply a constant voltage of a preset level to the input / output terminals of the first signal selection circuit unit to the nth signal selection circuit unit, where n is a natural number equal to or greater than 1.

15. Electronic devices, including display devices, in, The display device includes: The display panel includes a display area with multiple pixels arranged thereon; and A touch sensing module extends to the front of the display panel and detects the user's touch, wherein the touch sensing module includes: A touch sensing unit includes touch electrodes disposed in a touch sensing area and touch lines connected one-to-one with the touch electrodes; and The touch driver detects the touch position coordinates by analyzing the touch sensing signals detected from the touch electrodes. The touch sensing unit includes: The first signal selection circuit unit to the nth signal selection circuit unit respectively provide touch driving signals to the touch electrode through the touch line, and receive the touch sensing signal from the touch electrode; and The first antistatic circuit unit to the nth antistatic circuit unit apply a constant voltage of a preset level to the input / output terminals of the first signal selection circuit unit to the nth signal selection circuit unit, where n is a natural number equal to or greater than 1.

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