KR102522532B1 - Touch sensor integrated type display device - Google Patents

Abstract

The present invention relates to a liquid crystal display with a built-in touch sensor capable of improving touch sensitivity, comprising: a plurality of data lines and a plurality of gate lines disposed to cross each other; a plurality of thin film transistors formed at intersections of the plurality of data lines and the plurality of gate lines; a plurality of pixel electrodes disposed to cross each of the gate lines between the plurality of data lines and connected to the thin film transistors; a plurality of touch electrodes overlapping the data lines and gate lines and formed to contact and not overlap with the plurality of pixel electrodes; a plurality of touch routing wires connected to the plurality of touch electrodes and arranged in parallel in one direction; and a common electrode formed to overlap the plurality of data lines and gate lines, the plurality of pixel electrodes, and the plurality of touch electrodes.

Description

Touch sensor built-in display device {TOUCH SENSOR INTEGRATED TYPE DISPLAY DEVICE}

The present invention relates to a display device with a built-in touch sensor.

Recently, various input devices such as a keyboard, a mouse, a track ball, a joystick, and a digitizer are being used to configure an interface between a user and home appliances or various information communication devices. However, using the above-described input device has a problem in that it requires learning how to use it and causes inconvenience such as occupying space. Accordingly, demand for an input device that is convenient, simple, and capable of reducing malfunctions is increasing day by day. In response to such a demand, a touch sensor has been proposed in which a user inputs information by directly contacting a screen with a finger or a pen.

The touch sensor is simple, has few malfunctions, allows input without using a separate input device, and is applied to various display devices because of the convenience that the user can quickly and easily manipulate through the contents displayed on the screen. there is.

The touch sensor used in the above-described display device may be classified into an add-on type, an on-cell type, and an integrated type or in-cell type according to its structure. The top plate attachment type is a method in which the touch sensor module is attached to the top plate of the display device after separately manufacturing the display device and the touch sensor module. The upper plate integrated type is a method in which touch sensor elements are directly formed on the surface of the upper glass substrate of the display device. The built-in type is a method of embedding touch sensor elements inside the display device to achieve thinness and increase durability of the display device.

Among them, the built-in touch sensor is relatively widely used because the common electrode of the display device can be shared as a touch/common electrode, so the thickness can be reduced, and the touch element is formed inside the display device to increase durability.

The built-in touch sensor is attracting attention because it can solve the disadvantages of the top plate-attached touch sensor and the top plate integrated touch sensor in terms of durability and thinning. These built-in touch sensors are classified into an optical type and a capacitance type according to the method of detecting a touched part, and the capacitance type is further subdivided into a self capacitance type and a mutual capacitance type. do.

The self-capacitance touch sensor is a method of forming a plurality of independent patterns in a touch area of a touch sensing panel and measuring a change in capacitance of each independent pattern to determine whether or not a touch has been made. In the mutual capacitance type touch sensor, X-axis electrode lines (eg, driving electrode lines) and Y-axis electrode lines (eg, sensing electrode lines) are formed in the touch/common electrode formation area of the touch sensing panel. After forming a matrix by crossing each other, applying a driving pulse to the X-axis electrode lines, and then changing the voltage appearing at the sensing nodes defined by the intersection of the X-axis electrode lines and the Y-axis electrode lines through the Y-axis electrode lines It is a method of determining whether a touch is detected by detecting a touch screen.

The mutual capacitance type touch sensor has a very small size of mutual capacitance generated during touch recognition, but a very large parasitic capacitance between the gate line and the data line constituting the display device. There is a problem that is difficult to accurately recognize.

In addition, since the mutual capacitance type touch sensor needs to form a plurality of touch driving lines for touch driving and a plurality of touch sensing lines for touch sensing on a common electrode for multi-touch recognition, a very complex wiring structure is required. There is a problem being

Compared to mutual capacitance type touch sensors, self-capacitance type touch sensors can increase touch precision with a simple wiring structure, so they are widely used as needed.

Hereinafter, a display device with a built-in touch sensor will be described with reference to FIGS. 1 and 2 . 1 is a plan view of a conventional display device with a built-in touch sensor, and FIG. 2 is a plan view showing a touch sensing position obtained by the display device with a built-in touch sensor of FIG. 1 .

Referring to FIG. 1, the conventional touch sensor built-in display device includes touch/common electrodes (T11~T1a, T21~T2a, T31~T3a, T41~T4a, T51~T5a, T61~T6a, T71~T7a, T81~ T8a) is disposed, and includes an active area AA where data is displayed and a bezel area BA which is disposed outside the active area AA and where various wires, sources, and the touch driving IC 10 are disposed.

The active area AA includes a plurality of touch/common electrodes divided into a first direction (eg, x-axis direction) crossing each other and a second direction (eg, y-axis direction) crossing the first direction. (T11~T1a, T21~T2a, T31~T3a, T41~T4a, T51~T5a, T61~T6a, T71~T7a, T81~T8a) and a plurality of touch/common electrodes (T11~T1a, T21~T2a) A plurality of touch/common routing wires (W11 to W81, W12 W82, W13~W83, W14~W84, W15~W85, W16~W86, W17~W87, W18~W88, W19~W89, W1a~W8a).

The plurality of touch/common electrodes T11 to T1a, T21 to T2a, T31 to T3a, T41 to T4a, T51 to T5a, T61 to T6a, T71 to T7a, and T81 to T8a in the active area AA are It is formed by dividing the common electrode, and operates as a common electrode in the display driving mode for displaying data, and as a touch/common electrode in the touch driving mode for recognizing the touch position.

The bezel area BA is disposed outside the active area AA and includes a source and touch driving IC 10 and various wires. When driving the display, the source and touch driving IC 10 supplies display data to the data lines in synchronization with the driving of the gate lines (not shown) of the display device, and supplies a common voltage to the touch/common electrodes (common electrodes). supply The source and touch driving IC 10 also supplies a touch driving voltage to the touch/common electrodes during touch driving, and scans the change in capacitance of the touch/common electrode before and after the touch to calculate the touch position where the touch was performed. do. Various wires are connected to touch/common electrodes (T11~T1a, T21~T2a, T31~T3a, T41~T4a, T51~T5a, T61~T6a, T71~T7a, T81~T8a) and extended touch/common routing Wires (W11~W81, W12~W82, W13~W83, W14~W84, W15~W85, W16~W86, W17~W87, W18~W88, W19~W89, W1a~W8a), source and touch drive IC ( 10), gate wires (not shown), data wires (not shown), and the like.

Referring to FIG. 2, the touch/common electrodes (T11 to T1a, T21 to T2a, T31 to T3a, T41 to T4a, T51 to T5a, T61 to T6a, T71 to T7a, T81 to T8a) are affected when a touch is performed. It has touch sensing nodes (SW11 to SW1a, SW21 to SW2a, SW31 to SW3a, SW41 to S4a, SW5 to S5a, S61 to S6a, SW1 to S7a, S81 to S8a) recognized as touch positions.

In the conventional touch sensor built-in display device described above, the size of one touch/common electrode is formed to correspond to the size of approximately dozens of pixel electrodes, and a touch/common routing wire is independently connected to each touch/common electrode. . The number of touch/common electrodes is a value multiplied by the number of touch/common electrodes arranged in columns and rows. As the display device has become larger in accordance with the recent trend of larger display devices, the number of touch/common electrodes has increased rapidly. As such, if the number of touch/common electrodes increases rapidly with the trend of larger display devices, the number of touch/common routing wires connected to the touch/common electrodes arranged in one row is the number of pixel electrodes corresponding to each touch/common electrode. It becomes more than the number of rows. Accordingly, when a touch/common routing wire that does not overlap with the data line is generated, an aperture ratio of the display device is reduced.

In addition, in order to prevent an aperture ratio from deteriorating, when a touch/common routing wire is not connected to some touch/common electrodes or when a touch is performed on a touch/common electrode to which the touch/common routing wire is not connected, the exact touch location is recognized. There was a problem with not being able to do it. As such, the display device with a built-in touch sensor in the related art is limited in the size to which it can be applied, and the number of channels according to the number of touch/common electrode routing wires also increases, so that the source and touch driver IC connected to the touch/drive electrodes ( 10), there was a problem in that the manufacturing cost increased as the size increased.

Accordingly, an object of the present invention is to provide a display device with a built-in touch sensor capable of solving the above-described conventional problems.

A display device with a built-in touch sensor according to the present invention includes a display panel, a data driving circuit, a scan driving circuit, a multiplex unit, a readout IC, and a touch controller. The display panel includes data lines supplying data voltages to pixels, gate lines supplying scan pulses to the pixels, a plurality of touch/common electrodes that are divided and arranged, and each of the plurality of touch/common electrodes. It includes a plurality of connected touch/common routing wires, and is time-division driven in a display driving period and a touch sensor driving period. A data driving circuit supplies a video data voltage to the data lines during a display driving period. A scan driving circuit sequentially supplies scan pulses synchronized with the video data voltage to the gate lines during the display driving period. The multiplex unit supplies a common voltage to the plurality of touch/common electrodes during the display driving period, and supplies a touch driving voltage to the plurality of touch/common electrodes a plurality of times during the touch sensor driving period. A plurality of touch/common electrodes are sensed multiple times in a self capacitance method and a mutual capacitance method. The readout IC receives sensing voltages sensed from the plurality of touch/common electrodes via the multiplexer during the touch sensor driving period. The touch controller supplies a plurality of switching control signals to the multiplex unit and calculates a touch position based on sensing voltages received from the readout IC.

In addition, the display device with a built-in touch sensor further includes a switching block, an integration block, and a timing controller. The switching block is connected to the multiplex unit to supply the common voltage to the plurality of touch/common electrodes during the display driving period, and to supply the touch driving voltage to the plurality of touch/common electrodes during the touch sensor driving period. and is switched to output the sensing voltages. The integration block integrates the sensing voltages supplied from the switching block during the touch sensor driving period and outputs the integrated sensing voltage to the readout IC. The timing controller generates timing control signals for controlling operation timings of the data driving circuit and the scan driving circuit and a touch/display control signal for controlling the switching block.

In addition, the multiplexer includes a first multiplexer having input terminals connected to the plurality of touch/common electrodes, and the switching block includes a plurality of switching parts selectively connected to output terminals of the first multiplexer. And, the integration block includes a plurality of integrators each connected to the plurality of switching units.

In addition, the first multiplexer supplies the touch driving voltage supplied through the plurality of switching units to the plurality of touch/common electrodes during the touch sensor driving period, senses each of the plurality of touch/common electrodes, and The obtained first sensing voltages are output.

In addition, the first multiplexer includes a plurality of 1-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 1-1 control signal supplied from the touch controller; / A plurality of 1-2 switching elements connected to each of the drive electrodes and switched according to a 1-2 control signal supplied from the touch controller, and connected to each of the plurality of touch/drive electrodes to control the touch controller A plurality of 1-3 switching elements switched according to a 1-3 control signal supplied from and connected to each of the plurality of touch/drive electrodes according to a 1-4 control signal supplied from the touch controller It includes a plurality of 1st to 4th switching elements that are switched.

Further, the multiplexer includes a second multiplexer having input terminals connected to the plurality of touch/common electrodes, and output terminals of the second multiplexer are selectively connected to the plurality of integrators.

Also, during the touch sensor driving period, the second multiplexer converts the touch driving voltage supplied through the plurality of switching units to one of the plurality of touch/common electrodes of the first row and the second row adjacent to each other in the horizontal direction. Second sensing voltages obtained by supplying the plurality of touch/common electrodes of a row and sensing the plurality of touch/common electrodes of another row are output.

In addition, the second multiplexer includes a plurality of 2-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 2-1 control signal supplied from the touch controller; A plurality of 2-2 switching elements connected to each of the driving electrodes and switched according to a 2-2 control signal supplied from the touch controller, and a plurality of 2-2 switching elements connected to each of the plurality of touch/driving electrodes to obtain information from the touch controller It includes a plurality of 2-3 switching elements that are switched according to the supplied 2-3 control signal.

Further, the multiplexer includes a third multiplexer having input terminals connected to the plurality of touch/common electrodes, and output terminals of the third multiplexer are selectively connected to the plurality of integrators.

In addition, the third multiplexer transmits the touch driving voltage supplied through the plurality of switching units during the touch sensor driving period to a plurality of touch/common electrodes in one column among the plurality of touch/common electrodes in the first and second columns adjacent to each other in the vertical direction. supply to the touch/common electrodes, and output second sensing voltages obtained by sensing the plurality/common electrodes in another row.

In addition, the third multiplexer includes a plurality of 3-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to the 3-1 control signal supplied from the touch controller, and the plurality of touch/drive electrodes. A plurality of 3-2 switching elements connected to each of the driving electrodes and switched according to a 3-2 control signal supplied from the touch controller, and a plurality of 3-2 switching elements connected to each of the plurality of touch/driving electrodes from the touch controller A plurality of 3-3 switching elements switched according to a supplied 3-3 control signal, and a plurality of 3-4 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 3-4 control signal supplied from the touch controller It includes a plurality of 3-4 switching elements.

Further, the multiplexer includes a fourth multiplexer having input terminals connected to the plurality of touch/common electrodes, and output terminals of the fourth multiplexer are selectively connected to the plurality of integrators.

Also, during the touch sensor driving period, the fourth multiplexer transmits the touch driving voltage supplied through the plurality of switching units to one diagonal of a plurality of touch/common electrodes in the first and second diagonal directions adjacent to each other in the diagonal direction. Fourth sensing voltages obtained by supplying the touch/common electrodes in one diagonal direction and sensing multiple/common electrodes in another diagonal direction are output.

In addition, the fourth multiplexer includes a plurality of 4-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 4-1 control signal supplied from the touch controller; A plurality of 4-2 switching elements connected to each of the driving electrodes and switched according to a 4-2 control signal supplied from the touch controller, and a plurality of 4-2 switching elements connected to each of the plurality of touch/driving electrodes to obtain information from the touch controller. A plurality of 4-3 switching elements switched according to the supplied 4-3 control signal and connected to each of the plurality of touch/drive electrodes and switched according to the 4-4 control signal supplied from the touch controller It includes a plurality of fourth-fourth switching elements.

In addition, a plurality of integrators integrate the first to fourth sensing voltages and output them to the readout IC.

In addition, the size of the touch/common electrodes located on each side of the plurality of touch/common electrodes is smaller than that of the other touch/common electrodes.

In addition, each of the plurality of touch/common electrodes includes a stem portion, at least one branch portion extending from the stem portion, and at least one concave portion formed inside the stem portion, and the touch/common electrode At least one branch is disposed within the concave portion of the touch/common electrode adjacent thereto.

In addition, the at least one branch may have a shape of one of a bar shape, a sawtooth shape, a T shape, and an inverted T shape.

Also, the plurality of touch/common electrodes may have the same size.

Also, among the plurality of touch/common electrodes, the size of the touch/common electrodes positioned on each side may be smaller than that of the other touch/common electrodes.

According to the touch sensor integrated display device according to the present invention, since the size of the touch/common electrode can be formed much larger than that of the conventional touch sensor integrated display device, it can be applied to a large screen display device and reduce the number of touch channels of the readout IC. This can have the effect of reducing manufacturing costs.

In addition, even if the size of the touch/common electrode is increased to a size larger than that of the conventional touch/common electrode, the same touch resolution as in the prior art can be obtained by self-capacitance sensing and a plurality of mutual capacitance sensing. there is

In addition, according to the touch/common electrodes according to the present invention, the first branch portions of the touch/common electrodes adjacent to each other are coupled to the first concave portions and the second branch portions Tb2 and the second concave portions are coupled to each other. Since the length of each side of the adjacent touch/common electrodes can be increased, a mutual capacitance value obtained by mutual capacitance sensing is increased, thereby increasing touch resolution.

1 is a plan view of a conventional display device with a built-in touch sensor;
2 is a plan view showing a touch sensing position obtained by the display device with a built-in touch sensor of FIG. 1;
3 is a block diagram schematically showing a display device with a built-in touch sensor according to an embodiment of the present invention;
4 is a partially exploded perspective view schematically illustrating a partial area of a display device with a built-in touch sensor according to an embodiment of the present invention;
5 is a block diagram schematically showing a basic configuration for touch recognition of a display device with a built-in touch sensor according to an embodiment of the present invention;
6A is a circuit diagram showing a configuration for sensing each of touch/common electrodes of a display device with a built-in touch sensor according to an embodiment of the present invention in a self-capacitance manner;
6B is a plan view for explaining a step of sensing touch/common electrodes in a self-capacitance method using the circuit diagram shown in FIG. 6A;
6C is a plan view showing sensing positions of touch/common electrodes that can be sensed in a self-capacitance method using the circuit diagram shown in FIG. 6A;
7A is a circuit diagram showing a configuration for sensing touch/common electrodes of a touch sensor built-in display device according to an embodiment of the present invention in a first mutual capacitance method after self-capacitance sensing;
7B is a plan view for explaining a step of sensing touch/common electrodes in a 1-1 mutual capacitance method using the circuit diagram shown in FIG. 7A;
7C is a plan view additionally illustrating sensing positions that can be sensed in the 1-1 mutual capacitance method shown in FIG. 7B;
7D is a plan view for explaining a step of sensing touch/common electrodes in a 1-2 mutual capacitance method using the circuit diagram shown in FIG. 7A;
FIG. 7E is a plan view additionally showing sensing positions that can be sensed in the 1-2 mutual capacitance method shown in FIG. 7D;
8A is a circuit diagram showing a configuration for sensing touch/common electrodes of a display device with a built-in touch sensor according to an embodiment of the present invention after first mutual capacitance sensing;
8B is a plan view for explaining a step of sensing touch/common electrodes in a 2-1 mutual capacitance method using the circuit diagram shown in FIG. 8A;
8C is a plan view additionally illustrating sensing positions that can be sensed in the 2-1 mutual capacitance method shown in FIG. 8B;
8D is a plan view for explaining a step of sensing touch/common electrodes in a 2-2 mutual capacitance method using the circuit diagram shown in FIG. 8A;
8E is a plan view additionally illustrating sensing positions that can be sensed in the 2-2 mutual capacitance method shown in FIG. 8D;
9A is a circuit diagram showing a configuration for sensing touch/common electrodes of a touch sensor built-in display device according to an embodiment of the present invention in a third mutual capacitance method after sensing in a second mutual capacitance method;
9B is a plan view for explaining a step of sensing the touch/common electrodes shown in FIG. 9A in a 3-1 mutual capacitance method;
9C is a plan view illustrating sensing positions sensed by the 3-1 mutual capacitance method shown in FIG. 9B;
9D is a plan view for explaining a step of sensing the touch/common electrodes shown in FIG. 9A in a 3-2 mutual capacitance method;
9E is a plan view showing sensing positions sensed by the 3-2 mutual capacitance method shown in FIG. 9D;
9F is a plan view for explaining a step of sensing the touch/common electrodes shown in FIG. 9A in a 3-3 mutual capacitance method;
9g is a plan view illustrating sensing positions sensed by the 3-3 mutual capacitance method shown in FIG. 9f;
9H is a plan view for explaining a step of sensing the touch/common electrodes shown in FIG. 9A in a 3-4 mutual capacitance method;
9I is a plan view illustrating sensing positions sensed by the 3-4 mutual capacitance method shown in FIG. 9H;
10 is a plan view showing the configuration of touch/common electrodes of a display device with a built-in touch sensor according to another embodiment of the present invention;
FIG. 11 is a plan view illustrating a touch sensing position obtained by the touch sensor built-in display device of FIG. 10;
12A is a plan view showing touch sensing positions obtained by a conventional display device with a built-in touch sensor;
12B is a plan view illustrating touch sensing positions obtained by a display device with a built-in touch sensor according to an embodiment of the present invention;
13 is a plane showing a first example of a touch/common electrode for increasing a mutual capacitance value according to an embodiment of the present invention;
14 is a plan view showing a second example of a touch/common electrode for increasing a mutual capacitance value according to an embodiment of the present invention;
15 is a plan view showing a third example of a touch/common electrode according to an embodiment of the present invention;
16 is a graph showing mutual capacitance values depending on the length and width of the branch of each touch/drive electrode in the touch sensor integrated display device according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Like reference numbers throughout the specification indicate substantially the same elements. In the following description, if it is determined that a detailed description of a known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

The touch sensor built-in display device of the present invention includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting diode display (Organic It can be implemented with touch sensors embedded in an in-cell type in flat panel display devices such as Light Emitting Display (OLED) and Electrophoresis (EPD). In the following embodiments, a liquid crystal display element will be described as an example of a flat panel display element, but it should be noted that the display device of the present invention is not limited to the liquid crystal display device.

First, referring to FIGS. 3 and 4 , a display device with a built-in touch sensor according to an embodiment of the present invention will be described in detail. FIG. 3 is a schematic block diagram of a display device with a built-in touch sensor according to an embodiment of the present invention, and FIG. 4 is a partial exploded perspective view schematically showing a partial area of the display device with a built-in touch sensor according to an embodiment of the present invention. am.

A touch sensor built-in display device according to an embodiment of the present invention includes a display panel 100, a data driving circuit 202, a scan driving circuit 204, a timing controller 104, a multiplex unit (MUX), and a switching block (SB). ), an integration block (IB), a read-out integrated chip (ROIC), a touch controller (Touch controller, 306), and the like.

In the display panel 100, a liquid crystal layer is formed between two glass substrates. On the lower substrate of the display panel 100, a plurality of data lines (D1 to Dm, where m is a positive integer) and a plurality of gate lines (G1 to Gn, where n is a positive integer) crossing the data lines (D1 to Dm). an integer of), a plurality of thin film transistors (TFT) formed at intersections of the data lines (D1 to Dm) and the gate lines (G1 to Gn), and a plurality of data voltages for charging the liquid crystal cells (Clc). A pixel array including a pixel electrode P, a storage capacitor Cst connected to the pixel electrode P to maintain the voltage of the liquid crystal cell, and touch/common electrodes T are formed.

The pixels of the display panel 100 are formed in a pixel area defined by the data lines D1 to Dm and the gate lines G1 to Gn and are arranged in a matrix form. The liquid crystal cell of each of the pixels is driven by an electric field applied according to a voltage difference between the data voltage applied to the pixel electrode P and the common voltage Vcom applied to the touch/common electrode T, thereby increasing the transmission amount of incident light. to adjust The thin film transistors TFT are turned on in response to gate pulses from the gate lines G1 to Gn to supply voltages from the data lines D1 to Dm to the pixel electrode P of the liquid crystal cell.

The upper glass substrate SUB2 of the display panel 100 may include a black matrix BM, color filters R, G, and B, and an overcoat layer OC covering them. Meanwhile, the lower glass substrate SUB1 of the display panel 100 may be implemented with a color filter on TFT (COT) structure. In this case, the black matrix and color filters may be formed on the lower glass substrate of the display panel 100 .

The touch/common electrode (T) is formed on the upper glass substrate in vertical electric field driving methods such as TN (Twisted Nematic) mode and VA (Vertical Alignment) mode, IPS (In Plane Switching) mode and FFS (Fringe Field Switching) mode It is formed on the lower glass substrate together with the pixel electrode P in the horizontal electric field driving method. The touch/common electrodes T may be connected to the touch/common routing wires W11 to W45 to receive a common voltage Vcom.

Polarizing plates are attached to each of the upper glass substrate SUB2 and the lower glass substrate SUB1 of the display panel 100, and an alignment layer for setting a pretilt angle of the liquid crystal is formed on an inner surface in contact with the liquid crystal. A column spacer may be formed between the upper glass substrate SUB2 and the lower glass substrate SUB1 of the display panel 100 to maintain a cell gap of the liquid crystal cell.

The data driving circuit 202 includes a plurality of source drive integrated circuits (ICs). The source drive ICs output analog video data voltages during a preset display driving period. The source drive ICs latch digital video data (RGB) input from the timing controller 104. The source drive ICs convert the digital video data (RGB) into analog positive/negative polarity gamma compensation voltages and output analog video data voltages. The analog video data voltage is supplied to the data lines D1 to Dm.

The scan drive circuit 204 includes one or more scan drive ICs. The scan drive IC sequentially supplies scan pulses (or gate pulses) synchronized with the analog video data voltage to the gate lines (G1 to Gn) under the control of the timing controller 104 during the display driving period, so that the analog video data voltage is written. Select the line of the display panel to be used. The scan pulse is generated as a pulse swinging between a gate high voltage and a gate low voltage. The scan driving circuit 204 continuously supplies the gate low voltage to the gate lines G1 to Gn without generating a scan pulse during the touch sensor driving period. Therefore, the gate lines G1 to Gn supply gate pulses to the thin film transistors (TFTs) of the pixels during the display period to sequentially select lines on which data is to be written in the display panel 100, and during the touch sensor driving period maintain low voltage.

The timing controller 104 receives timing signals such as a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), a data enable signal (DE), and a main clock (MCLK) input from an external host system. Timing control signals for controlling operation timings of the data driving circuit 202 and scan driving circuit 204 and a touch/display control signal Ctd for controlling the switching block SB are generated. The timing control signals of the scan driving circuit 204 include a gate start pulse (GSP), a gate shift clock (GSC), a gate output enable signal (GOE), and a shift direction control signal. (DIR) and the like. The timing control signal of the data driving circuit 202 includes a source sampling clock (SSC), a polarity control signal (Polarity, POL), a source output enable signal (Source Output Enable, SOE), and the like.

The timing controller 104 time-divides one frame period into at least one display driving period and at least one touch sensor driving period by controlling the timing control signals. The timing controller 104 enables outputs of the data driving circuit 202 and the scan driving circuit 204 during the display driving period to display video data on pixels. The timing controller 104 detects the touch position of the touch screen by driving the touch controller TC during the touch sensor driving period. The display driving period and the touch sensor driving period may be appropriately adjusted in consideration of panel characteristics according to the type of the display panel 100 .

The multiplex unit (MUX) supplies a touch driving voltage to the touch/common electrodes (T) according to the touch/display control signal (Ctd), and the touch/common electrodes (T) are self-capacitance and mutual capacitance sensed in this way to output sensing voltages.

The integration block IB integrates and outputs the sensing voltages supplied from the multiplex unit MUX.

A read-out integrated chip (ROIC) converts the integrated sensing voltages supplied from the integration block (IB) into digital data in a human interface device (HID) format and outputs it.

The touch controller TC supplies switching control signals C11 to C44 for controlling the multiplex unit MUX to the multiplex unit MUX. The touch controller (TC) analyzes digital data input from the read-out IC (ROIC) with a preset touch recognition algorithm to calculate coordinate values. The coordinate value data of the touch position output from the touch controller TC is transmitted to an external host system (not shown). The host system executes an application program indicated by the coordinate value of the touch position.

Next, with reference to FIG. 5 , a configuration for touch recognition of a display device with a built-in touch sensor according to an embodiment of the present invention will be described in more detail. 5 is a block diagram schematically illustrating a basic configuration for touch recognition of a display device with a built-in touch sensor according to an embodiment of the present invention.

Referring to FIG. 5 , a display device with a built-in touch sensor according to an embodiment of the present invention includes a plurality of touch/common electrodes (T11 to T15, T21 to T25, T31 to T35, T41 to T45) disposed in a display area, Touch/common routing wires (W11~W41, W12~W42, W13~W43, W14~W44, W15 to W45), a multiplex unit (MUX), an integration block (IB), a read-out IC (ROIC), and a touch controller (TC).

The plurality of touch/common electrodes (T11 to T15, T21 to T25, T31 to T35, and T41 to T45) have a first direction (eg, x-axis direction) crossing each other and a second direction crossing the first direction. (eg, in the y-axis direction).

The plurality of touch/common routing wires (W11 to W41, W12 to W42, W13 to W43, W14 to W44, and W15 to W45) include a number of touch/common electrodes (T11 to T15, T21 to T25, T31 to T35, T41 to T45) are connected to each other and arranged in the second direction.

The multiplex unit (MUX) includes a first multiplexer (MUX-S) for sensing the plurality of touch/common electrodes (T11 to T15, T21 to T25, T31 to T35, and T41 to T45) in a self-capacitance method, a plurality of A second multiplexer (MUX-M1) for sensing the touch/common electrodes (T11 to T15, T21 to T25, T31 to T35, and T41 to T45) in the horizontal direction in a first mutual capacitance method, a plurality of touch/common electrodes A third multiplexer (MUX-M2) for sensing the common electrodes (T11 to T15, T21 to T25, T31 to T35, T41 to T45) in a second mutual capacitance method in the vertical direction, and a plurality of touch/common electrodes and a fourth multiplexer (MUX-M4) for sensing T11 to T15, T21 to T25, T31 to T35, and T41 to T45 in a diagonal third mutual capacitance method. The specific configuration of the first to fourth multiplexers (MUX-S, MUX-M1 to MUX-M3) will be described in detail in related parts when describing FIGS. 6A to 9I.

The integration block IB includes first to fifth integrators I1 to I5, and the first to fourth multiplexers MUX-S, MUX-M1, MUX-M2, and MUX of the multiplex unit MUX. - Integrate and output the sensing voltages output from M3).

A read-out integrated chip (ROIC) converts the integrated sensing voltages supplied from the integration block (IB) into digital data in a human interface device (HID) format and outputs it.

The touch controller (TC) analyzes digital data input from the read-out IC (ROIC) with a preset touch recognition algorithm to calculate coordinate values. The coordinate value data of the touch position output from the touch controller TC is transmitted to an external host system (not shown). The host system executes an application program indicated by the coordinate value of the touch position.

Next, a touch recognition method of a display device with a built-in touch sensor according to an embodiment of the present invention will be described in detail with reference to FIGS. 6A to 9I .

The touch recognition of the display device with a built-in touch sensor according to an embodiment of the present invention includes a self-capacitance sensing step of sensing each of the touch/common electrodes in a self-capacitance method (see FIGS. 6A to 6C), and the touch/common electrodes. A first mutual capacitance sensing step of sensing in the horizontal direction by a mutual capacitance method (see FIGS. 7A to 7E ), and a second mutual capacitance sensing step of sensing the touch/common electrodes in a vertical direction by a mutual capacitance method. (see FIGS. 8A to 8E ), and a third mutual capacitance sensing step (see FIGS. 9A to 9I ) of sensing the touch/common electrodes in a diagonal direction by a mutual capacitance method. In the description of the embodiment of the present invention, it has been described that the self-capacitance sensing step and the first to third mutual capacitance sensing steps are sequentially performed, but the order of these sensing steps may be changed in any way.

1. Self-capacitive sensing

Next, the self capacitance sensing step will be described with reference to FIGS. 6A to 6C. 6A is a circuit diagram for explaining a step of sensing each of the touch/common electrodes of the display device with a built-in touch sensor according to an embodiment of the present invention in a self-capacitance method, and FIG. 6B is a self-capacitance method shown in FIG. 6A FIG. 6C is a plan view showing the sensing positions sensed by the self-capacitance method shown in FIG. 6A.

Referring to FIG. 6A , a display device with a built-in touch sensor according to an embodiment of the present invention for self-capacitance sensing includes a first multiplexer MUX-S of a multiplex unit MUX and a first multiplexer MUX-S. ) and the integration block (IB) to supply a common voltage (Vcom) during the display driving period, and a switching block (SB) for supplying the touch sensor driving voltage (Vtx) during the touch sensor driving period.

The first multiplexer MUX-S includes the 1-1st to 4-20th switching elements Sa01 to Sa20, Sb01 to Sb20, Sc01 to Sc20, and Sd01 to Sd20.

The 1-1 switching element Sa01 includes a first terminal connected to the 1-1 touch/drive routing wire W11 connected to the 1-1 touch/drive electrode T11, and a first integrator I1. and a control terminal for receiving the 1-1 control signal C11 supplied from the touch controller TC.

The 1-2 switching element Sa02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-3 switching element Sa03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-4 switching element Sa04 has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-5 switching element Sa05 includes a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12, and a second integrator I2. and a control terminal for receiving the 1-1 control signal C11 supplied from the touch controller TC.

The 1-6th switching element Sa06 has a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the first control signal SW1 supplied from the touch controller TC.

The 1-7th switching element Sa07 has a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-8th switching element Sa08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-9th switching element Sa09 includes a first terminal connected to the 1-3th touch/drive routing wire W13 connected to the 1-3th touch/drive electrode T13, and a third integrator I3. and a control terminal for receiving the 1-1 control signal C11 supplied from the touch controller TC.

The 1-10th switching element Sa10 has a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-11th switching element Sa11 has a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-12th switching element Sa12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-13th switching element Sa13 includes a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14, and a fourth integrator I4. and a control terminal for receiving the 1-1 control signal C11 supplied from the touch controller TC.

The 1-14th switching element Sa14 has a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-15th switching element Sa15 has a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-16th switching element Sa16 has a first terminal connected to the 4-4th touch/drive routing wire W44 connected to the 4-4th touch/drive electrode T43 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-17th switching element Sa17 includes a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15, and a fourth integrator I4. and a control terminal for receiving the 1-1 control signal C11 supplied from the touch controller TC.

The 1-18th switching element Sa18 has a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-19th switching element Sa19 has a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 1-20th switching element Sa20 has a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-1 control signal C11 supplied from the touch controller TC.

The 2-1 switching element Sb01 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 1-1 touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-2 switching element Sb02 includes a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-2 control signals (SW12) supplied from the touch controller (TC).

The 2-3 switching element Sb03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-4th switching element Sb04 has a first terminal connected to the 4-1st touch/drive routing wire W41 connected to the 4-1st touch/drive electrode T41 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-5th switching element Sb05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-6th switching element Sb06 includes a first terminal connected to the 2-2nd touch/drive routing wire W22 connected to the 2-2nd touch/drive electrode T22, and a second integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-2 control signals (SW12) supplied from the touch controller (TC).

The 2-7th switching element Sb07 has a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-8th switching element Sb08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-9th switching element Sb09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-10 switching element Sb10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-2 control signals (SW12) supplied from the touch controller (TC).

The 2-11th switching element Sb11 has a first terminal connected to the 3-3rd touch/drive routing wire W33 connected to the 3-3rd touch/drive electrode T33 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-12th switching element Sb12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-13th switching element Sb13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-14th switching element Sb14 includes a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24, and a fourth integrator I4. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-2 control signals (SW12) supplied from the touch controller (TC).

The 2-15th switching element Sb15 has a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34 and a ground terminal GND. It includes a second terminal to be connected and a control terminal for receiving the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-16th switching element Sb16 has a first terminal connected to the 4-4th touch/drive routing wire W44 connected to the 4-4th touch/drive electrode T43 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals SW12 supplied from the touch controller TC.

The 2-17th switching element Sb17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals C12 supplied from the touch controller TC.

The 2-18th switching element Sb18 includes a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25, and a fifth integrator I5. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 1-2 control signals (C12) supplied from the touch controller (TC).

The 2-19th switching element Sb19 has a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals C12 supplied from the touch controller TC.

The 2-20th switching element Sb20 has a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-2 control signals C12 supplied from the touch controller TC.

The 3-1st switching element Sc01 has a first terminal connected to the 2-1st touch/drive routing wire W21 connected to the 1-1st touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-2 switching element Sc02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-3 switching element Sc03 includes a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-3 control signals (C13) supplied from the touch controller (TC).

The 3-4th switching element Sc04 has a first terminal connected to the 4-1st touch/drive routing wire W41 connected to the 4-1st touch/drive electrode T41 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-5 switching element Sc05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-6th switching element Sc06 has a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-7th switching element Sc07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a second integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-3 control signals (C13) supplied from the touch controller (TC).

The 3-8th switching element Sc08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-9th switching element Sc09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-10th switching element Sc10 has a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-11th switching element Sc11 includes a first terminal connected to the 3-3rd touch/drive routing wire W33 connected to the 3-3rd touch/drive electrode T33, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-3 control signals (C13) supplied from the touch controller (TC).

The 3-12th switching element Sc12 has a first terminal connected to the 4-3rd touch/drive routing wire W43 connected to the 4-3rd touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-13th switching element Sc13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-14th switching element Sc14 has a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-15th switching element Sc15 includes a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34, and a fourth integrator I4. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-3 control signals (C13) supplied from the touch controller (TC).

The 3-16th switching element Sc16 has a first terminal connected to the 4-4th touch/drive routing wire W44 connected to the 4-4th touch/drive electrode T43 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-17th switching element Sc17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-18th switching element Sc18 has a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 3-19th switching element Sc19 includes a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35, and a fifth integrator I5. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 1-3 control signals (C13) supplied from the touch controller (TC).

The 3-20th switching element Sc20 has a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-3 control signals C13 supplied from the touch controller TC.

The 4-1 switching element Sd01 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 1-1 touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-2 switching element Sd02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-3 switching element Sd03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-4 switching element Sd04 includes a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41, and a first integrator I1. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 1-4 control signals (C14) supplied from the touch controller (TC).

The 4-5th switching element Sd05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-6th switching element Sd06 has a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-7th switching element Sd07 has a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-8 switching element Sc08 includes a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42, and a second integrator I2. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 1-4 control signals (C14) supplied from the touch controller (TC).

The 4-9th switching element Sd09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-10th switching element Sd10 has a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-11th switching element Sd11 has a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-12th switching element Sd12 has a first terminal connected to the 4-3rd touch/drive routing wire W43 connected to the 4-3rd touch/drive electrode T42, and a third integrator I3. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 1-4 control signals (C14) supplied from the touch controller (TC).

The 4-13th switching element Sd13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-14th switching element Sd14 has a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-15th switching element Sd15 has a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-16th switching element Sd16 includes a first terminal connected to the 4-4th touch/drive routing wire W44 connected to the 4-4th touch/drive electrode T43, and a fourth integrator I4. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 1-4 control signals (C14) supplied from the touch controller (TC).

The 4-17th switching element Sd17 has a first terminal connected to the 1-5 touch/drive routing wires W15 connected to the 1-5 touch/drive electrodes T15 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-18th switching element Sd18 has a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-19th switching element Sd19 has a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 1-4 control signals C14 supplied from the touch controller TC.

The 4-20th switching element Sd20 includes a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45, and a fifth integrator I5. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 1-4 control signals (C14) supplied from the touch controller (TC).

The 1-1st to 4-20th switching elements Sa01 to Sa20, Sb01 to Sb20, Sc01 to Sc20, and Sd01 to Sd20 may be implemented as switching thin film transistors.

The switching block SB is disposed between the first multiplexer MUX-S and the integration block IB, and includes first to fifth switching units SW1 to SW5.

The first switching unit (SW1) is connected to the second terminals of the 1-1, 2-2, 3-3, 4-4 switching elements (Sa01, Sb02, Sc03, Sd04) 1- 1 terminal (n11), the 1-2 terminal (n12) connected to the first input terminal (a) of the first integrator (I1), and the 1-3 terminal (n13) to which the common voltage (Vcom) is applied. include The first switching unit (SW1) supplies the common voltage (Vcom) to the first multiplexer (MUX-S) when the display is driven by the touch/display control signal (Ctd) supplied from the timing controller 104, and the touch sensor During driving, the touch driving voltage Vtx is supplied to the first multiplexer MUX-S.

The second switching unit (SW2) is connected to the second terminals of the 1st to 5th, 2nd to 6th, 3rd to 7th, and 4th to 8th switching elements Sa05, Sb06, Sc07, and Sd08. 1 terminal (n21), the 2-2 terminal (n22) connected to the first input terminal (a) of the second integrator (I2), and the 2-3 terminal (n23) to which the common voltage (Vcom) is applied. include The second switching unit (SW2) supplies the common voltage (Vcom) to the first multiplexer (MUX-S) when the display is driven by the touch/display control signal (Ctd) supplied from the timing controller 104, and the touch sensor During driving, the touch driving voltage Vtx is supplied to the first multiplexer MUX-S.

The third switching unit SW3 is connected to the second terminals of the 1-9th, 2-10th, 3-11th, and 4-11th switching elements Sa09, Sb10, Sc11, and Sd12. 1 terminal (n31), the 3-2 terminal (n32) connected to the first input terminal (a) of the third integrator (I3), and the 3-3 terminal (n33) to which the common voltage (Vcom) is applied. include The third switching unit (SW3) supplies the common voltage (Vcom) to the first multiplexer (MUX-S) when the display is driven by the touch/display control signal (Ctd) supplied from the timing controller 104, and the touch sensor During driving, the touch driving voltage Vtx is supplied to the first multiplexer MUX-S.

The fourth switching unit SW4 is connected to the second terminals of the 1st to 13th, 2nd to 14th, 3rd to 15th, and 4th to 16th switching elements Sa13, Sb14, Sc15, and Sd16. 1 terminal (n41), the 4-2 terminal (n42) connected to the first input terminal (a) of the 4 integrator (I4), and the 4-3 terminal (n43) to which the common voltage (Vcom) is applied. include The fourth switching unit (SW4) supplies the common voltage (Vcom) to the first multiplexer (MUX-S) when the display is driven by the touch/display control signal (Ctd) supplied from the timing controller 104, and touch sensor During driving, the touch driving voltage Vtx is supplied to the first multiplexer MUX-S.

The fifth switching unit SW5 is a 5-, connected to second terminals of the 1-17th, 2-18th, 3-19th, and 4-20th switching elements Sa17, Sb18, Sc19, and Sd20. 1 terminal (n51), the 5-2 terminal (n52) connected to the first input terminal (a) of the 5 integrator (I5), and the 5-3 terminal (n53) to which the common voltage (Vcom) is applied. include The third switching unit (SW3) supplies the common voltage (Vcom) to the first multiplexer (MUX-S) when the display is driven by the touch/display control signal (Ctd) supplied from the timing controller 104, and the touch sensor During driving, the touch driving voltage Vtx is supplied to the first multiplexer MUX-S.

Each of the first to fifth switching units SW1 to SW5 may include, for example, an n-MOS transistor and a p-MOS transistor. In this configuration, the two transistors can be operated in opposite ways with one control signal. Of course, each of the first to fifth switching block units SW1 to SW5 may be configured using two identical transistors. In this case, the signals supplied to the two transistors must be opposite to each other.

Referring to FIG. 6A, when the display of the touch sensor built-in display device according to an embodiment of the present invention is driven, the first to fifth switching units (SW1 to SW5) are connected to the common voltage (Vcom) by the touch/display control signal (Ctd). ) Connect the supply source and the first multiplexer (MUX-S). The first to fourth switching elements Sa01 to Sa20, Sb01 to Sb20, Sc01 to Sc20, and Sd01 to Sd20 of the first multiplexer MUX-S control signals C1 to C4 supplied from the touch controller TC. ) is turned on by Accordingly, the common voltage (Vcom) is supplied to all touch/common electrodes (T11~T15, T21~ T25, T31~T35, T41~T45), and data is displayed on the display screen.

When the touch sensor of the touch sensor built-in display device according to the embodiment of the present invention is driven, the first to fifth switching units (SW1 to SW5) operate on the integration block (IB) and the first multiplexer by the touch/display control signal (Ctd). (MUX-S) is connected. The touch controller TC sequentially supplies the 1-1 to 1-4 switching control signals C11 to C14 from the multiplex unit MUX to the first multiplexer MUX-S.

First, when the touch controller TC supplies the 1-1st switching control signal C11 to the 1st multiplexer MUX-S of the multiplex unit MUX, the 1-1st switching control signal C11 is 1 is supplied to the control terminals of the 1-1 to 1-20 switching elements Sa01 to Sa20 of the multiplexer MUX-S to control the 1-1 to 1-20 switching elements Sa01 to Sa20. turn on

Accordingly, the touch sensor driving voltage (Vtx) is applied to the first to fifth switching units SW1 to SW5 and the 1-1 to 1-20 switching elements Sa01 to Sa20. The 1-1 to 1-5th touch/common electrodes T11 to T15 are sensed simultaneously with being supplied to the 1-5th touch/common electrodes T11 to T15. The sensed 1-1 to 1-5 sensing voltages are transmitted through the 1-1 to 1-20 switching elements Sa01 to Sa20 and the first switching unit SW1 to the first to fifth integrators I1. ~ I5) is supplied to the first input terminals (a).

The first to fifth integrators (I1 to I5) supply and sense the touch sensor driving voltage several times, integrate the sensed 1-1 to 1-5 sensing voltages, and integrate the integrated 1-1 to 1 -5 Sensing voltages are output to the read-out IC (ROIC).

The read-out IC (ROIC) converts the integrated sensing voltages 1-1 to 1-5 into digital data in HID format and outputs the converted digital data.

The touch controller (TC) analyzes digital data input from the read-out IC (ROIC) with a preset touch recognition algorithm to calculate coordinate values. Accordingly, it is identified where the touch was performed among the sensing positions SW11 to SW15 of the 1-1st to 1-5th touch/common electrodes T11 to T15 in the first row shown in FIGS. 6B and 6C. You can do it.

Next, when the touch controller TC supplies the 1-2 switching control signal C12 to the 1st multiplexer MUX-S of the multiplex unit MUX, the 1-2 switching control signal C12 is It is supplied to the control terminals of the 2-1st to 2-20th switching elements (Sb01 to Sb20) of the 1st multiplexer (MUX-S), and the 2-1st to 2-20th switching elements (Sb01 to Sb20) turn on

Accordingly, the touch sensor driving voltage (Vtx) is transmitted through the first to fifth switching units SW1 to SW5 and the 2-1 to 2-20 switching elements Sb01 to Sb20. The 2-1st to 2-5th touch/common electrodes T21 to T25 are sensed simultaneously with being supplied to the 2-5th touch/common electrodes T21 to T25. And the sensed 2-1st to 2-5th sensing voltages are the 1st to 2nd through the 2-1st to 2-20th switching elements Sb01 to Sb20 and the 1st to 5th switching units SW1 to SW5. It is supplied to the first input terminals (a) of the fifth integrators (I1 to I5).

The first to fifth integrators (I1 to I5) supply and sense the touch sensor driving voltage several times, integrate the sensed 2-1 to 2-5 sensing voltages, and integrate the integrated 2-1 to 2-th integrators. -5 Sensing voltages are output to the read-out IC (ROIC).

The read-out IC (ROIC) converts the integrated 2-1st to 2-5th sensing voltages into HID format digital data and outputs them.

The touch controller (TC) analyzes digital data input from the read-out IC (ROIC) with a preset touch recognition algorithm to calculate coordinate values. Accordingly, it is identified where the touch was performed among the sensing positions SW21 to SW25 of the 2-1st to 2-5th touch/common electrodes T21 to T25 in the second row shown in FIGS. 6B and 6C. You can do it.

Next, when the touch controller TC supplies the 1-3 switching control signal C13 to the first multiplexer MUX-S of the multiplex unit MUX, the 1-3 switching control signal C13 is It is supplied to the control terminals of the 3-1st to 3-20th switching elements (Sc01 to Sc20) of the first multiplexer (MUX-S) and the 3-1st to 3-20th switching elements (Sc01 to Sc20) turn on

Accordingly, the touch sensor driving voltage (Vtx) is transmitted through the first to fifth switching units SW1 to SW5 and the 3-1 to 3-20 switching elements Sc01 to Sc20. The 3-1st to 3-5th touch/common electrodes T31 to T35 are sensed simultaneously with being supplied to the 3-5th touch/common electrodes T31 to T35. And the sensed 3-1st to 3-5th sensing voltages are the 1st to 3-5th sensing voltages through the 3-1st to 3-20th switching elements (Sc01 to Sc20) and the 1st to 5th switching units (SW1 to SW5). It is supplied to the first input terminals (a) of the fifth integrators (I1 to I5).

The first to fifth integrators (I1 to I5) supply and sense the touch sensor driving voltage several times, integrate the sensed 3-1 to 3-5 sensing voltages, and integrate the integrated 3-1 to 3 th integrators. -5 Sensing voltages are output to the read-out IC (ROIC).

The read-out IC (ROIC) converts the integrated 3-1st to 3-5th sensing voltages into HID format digital data and outputs them.

The touch controller (TC) analyzes digital data input from the read-out IC (ROIC) with a preset touch recognition algorithm to calculate coordinate values. Accordingly, it is identified where the touch was performed among the sensing positions SW31 to SW35 of the 3-1st to 3-5th touch/common electrodes T31 to T35 in the third row shown in FIGS. 6B and 6C. You can do it.

Next, when the touch controller TC supplies the -14th switching control signal C14 to the first multiplexer MUX-S of the multiplex unit MUX, the 1-4th switching control signal C14 is It is supplied to the control terminals of the 4-1st to 4-20th switching elements (Sd01 to Sd20) of 1 multiplexer (MUX-S) to control the 4-1st to 4-20th switching elements (Sd01 to Sd20). turn on

Accordingly, the touch sensor driving voltage (Vtx) is transmitted through the first to fifth switching units SW1 to SW5 and the 4-1 to 4-20 switching elements Sd01 to Sd20. The 4-1st to 4-5th touch/common electrodes T41 to T45 are sensed simultaneously with being supplied to the 4-5th touch/common electrodes T41 to T45. And the sensed 4-1st to 4-5th sensing voltages are the 1st to 4th through the 4-1st to 4-20th switching elements Sd01 to Sd20 and the 1st to 5th switching units SW1 to SW5. It is supplied to the first input terminals (a) of the fifth integrators (I1 to I5).

The first to fifth integrators (I1 to I5) supply and sense the touch sensor driving voltage several times, integrate the sensed 4-1 to 4-5 sensing voltages, and integrate the integrated 4-1 to 4th integrators. -5 Sensing voltages are output to the read-out IC (ROIC).

The read-out IC (ROIC) converts the integrated 4-1st to 4-5th sensing voltages into HID format digital data and outputs them.

The touch controller (TC) analyzes digital data input from the read-out IC (ROIC) with a preset touch recognition algorithm to calculate coordinate values. Accordingly, it is identified where the touch was performed among the sensing positions SW41 to SW45 of the 4-1st to 4-5th touch/common electrodes T41 to T45 in the fourth row shown in FIGS. 6B and 6C. You can do it.

Through the above-described touch sensor sensing step, the sensing positions (SW11 to SW15, SW21 to SW25, SW31 to SW35, SW41 to SW45) of the touch/common electrodes (T11 to T15, T21 to T25, T31 to T35, T41 to T45) ), it is possible to identify where the touch was performed. Sensing positions obtained through the self-capacitance sensing step are as shown in FIG. 6C.

2. First mutual capacitive sensing

When the self-capacitance sensing is completed, first mutual capacitance sensing is performed.

Hereinafter, the first mutual capacitance sensing step will be described with reference to FIGS. 7A to 7E. FIG. 7A is a circuit diagram showing a configuration for sensing touch/common electrodes of a display device with a built-in touch sensor according to an embodiment of the present invention after sensing by a self-capacitance method in a first mutual capacitance method. FIG. A plan view for explaining the step of sensing the touch/common electrodes in the 1-1 mutual capacitance method using the circuit diagram shown in FIG. 7A, and FIG. 7C is the 1-1 mutual capacitance sensing method shown in FIG. 7B. FIG. 7d is a plan view additionally showing possible sensing positions, and FIG. 7d is a plan view illustrating a step of sensing touch/common electrodes in a 1-2 mutual capacitance method using the circuit diagram shown in FIG. 7a, and FIG. 7e is a plan view additionally illustrating sensing positions that can be sensed in the 1-2 mutual capacitance method shown in FIG. 7D.

Referring to FIG. 7A , a display device with a built-in touch sensor according to an embodiment of the present invention includes a second multiplexer MUX-M1 of a multiplex unit MUX for first mutual capacitance sensing. The second multiplexer MUX-M1 includes m1-1 to m3-20 switching elements mSa01 to mSa20, mSb01 to mSb20, and mSc1 to mSc20.

The m1-1 th switching element mSa01 includes a first terminal connected to the 1-1 touch/drive routing wire W11 connected to the 1-1 touch/drive electrode T11, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-1st control signal C21 supplied from the touch controller TC.

The m1-2 switching element mSa02 includes a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-1st control signal (C21) supplied from the touch controller (TC).

The m1-3 switching element mSa03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-4th switching element mSa04 has a first terminal connected to the 4-1 touch/drive routing wire W31 connected to the 4-1 touch/drive electrode T31 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-5 switching element mSa05 includes a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-1st control signal C21 supplied from the touch controller TC.

The m1-6th switching element mSa06 includes a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22, and a first integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-1st control signal (C21) supplied from the touch controller (TC).

The m1-7th switching element mSa07 has a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-8th switching element mSa08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-9th switching element mSa09 includes a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-1st control signal C21 supplied from the touch controller TC.

The m1-10th switching element mSa10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-1st control signal (C21) supplied from the touch controller (TC).

The m1-11th switching element mSa11 has a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-12th switching element mSa12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-13th switching element mSa13 includes a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-1st control signal C21 supplied from the touch controller TC.

The m1-14th switching element mSa14 includes a first terminal connected to the 2-4 touch/drive routing wire W24 connected to the 2-4 touch/drive electrode T24, and a fourth integrator I4. It includes a second terminal input to the first input terminal (a) of and a control terminal for receiving the 2-1st control signal (C21) supplied from the touch controller (TC).

The m1-15th switching element mSa15 has a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-16th switching element mSa16 has a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-17th switching element mSa17 includes a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-1st control signal C21 supplied from the touch controller TC.

The m1-18th switching element mSa18 includes a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25, and a fifth integrator I5. It includes a second terminal input to the first input terminal (a) of and a control terminal for receiving the 2-1st control signal (C21) supplied from the touch controller (TC).

The m1-19th switching element mSa19 has a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m1-20th switching element mSa20 has a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-1st control signal C21 supplied from the touch controller TC.

The m2-1st switching element mSb01 has a first terminal connected to the 1-1 touch/drive routing wire W11 connected to the 1-1 touch/drive electrode T11 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-2 switching element mSb02 includes a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-2nd control signal (C22) supplied from the touch controller (TC).

The m2-3 switching element mSb03 includes a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-2 control signal C22 supplied from the touch controller TC.

The m2-4th switching element mSb04 has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-5th switching element mSb05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-6th switching element mSb06 includes a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22, and a second integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-2nd control signal (C22) supplied from the touch controller (TC).

The m2-7th switching element mSb07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-2 control signal C22 supplied from the touch controller TC.

The m2-8th switching element mSb08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-9th switching element mSb09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-10th switching element mSb10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-2nd control signal (C22) supplied from the touch controller (TC).

The m2-11th switching element mSb11 includes a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-2 control signal C22 supplied from the touch controller TC.

The m2-12th switching element mSb12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-13th switching element mSb13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-14th switching element mSb14 includes a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24, and a fourth integrator I4. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-2nd control signal (C22) supplied from the touch controller (TC).

The m2-15th switching element mSb15 includes a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-2 control signal C22 supplied from the touch controller TC.

The m2-16th switching element mSb16 has a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-17th switching element mSb17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m2-18th switching element mSb18 includes a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25, and a fifth integrator I5. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 2-2nd control signal (C22) supplied from the touch controller (TC).

The m2-19th switching element mSb19 includes a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-2 control signal C22 supplied from the touch controller TC.

The m2-20th switching element mSb20 has a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 2-2nd control signal C22 supplied from the touch controller TC.

The m3-01th switching element mSc01 has a first terminal connected to the 1-1 touch/drive routing wire W11 connected to the 1-1 touch/drive electrode T11 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-02 switching element mSc02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-03 switching element mSc03 includes a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-3 control signals C23 supplied from the touch controller TC.

The m3-04th switching element mSc04 includes a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 2-3 control signals (C23) supplied from the touch controller (TC).

The m3-05 switching element mSc05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-06th switching element mSc06 has a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-07th switching element mSc07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-3 control signals C23 supplied from the touch controller TC.

The m3-08th switching element mSc08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42, and a second integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 2-3 control signals (C23) supplied from the touch controller (TC).

The m3-09th switching element mSc09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-10th switching element mSc10 has a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-11th switching element mSc11 includes a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-3 control signals C23 supplied from the touch controller TC.

The m3-12th switching element mSc12 includes a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 2-3 control signals (C23) supplied from the touch controller (TC).

The m3-13th switching element mSc13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-14th switching element mSc14 has a first terminal connected to the 2-4 touch/drive routing wire W24 connected to the 2-4 touch/drive electrode T24 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-15th switching element mSc15 includes a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-3 control signals C23 supplied from the touch controller TC.

The m3-16th switching element mSc16 includes a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44, and a fourth integrator I4. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 2-3 control signals (C23) supplied from the touch controller (TC).

The m3-17th switching element mSc17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-18th switching element mSc18 has a first terminal connected to the 2-5 touch/drive routing wire W25 connected to the 2-5 touch/drive electrode T25 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 2-3 control signals C23 supplied from the touch controller TC.

The m3-19th switching element mSc19 includes a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 2-3 control signals C23 supplied from the touch controller TC.

The m3-20th switching element mSc20 includes a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45, and a fifth integrator I5. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 2-3 control signals (C23) supplied from the touch controller (TC).

The m1-1 to m3-20th switching elements (mSa01 to mSa20, mSb01 to mSb20, and mSc01 to mSc20) may be implemented as switching thin film transistors.

Next, the first mutual capacitance sensing step in the horizontal direction will be described with reference to FIGS. 7A to 7E.

First, when the touch controller TC supplies the 2-1st switching control signal C21 to the 2nd multiplexer MUX-M1 of the multiplex unit MUX, the 2-1st switching control signal C21 is 2 It is supplied to the control terminals of the m1-1 to m1-20th switching elements (mSa01 to mSa20) of the multiplexer (MUX-M1) so that the m1-1 to m1-20th switching elements (mSa01 to mSa20) turn on

Accordingly, the touch sensor driving voltage Vtx is supplied to the 1-1 to 1-5 touch/common electrodes T11 to T15 in the first row. Also, the 2-1st to 2-5th touch/common electrodes T21 to T25 of the second row are respectively connected to the first input terminals of the first to fifth integrators I1 to I5.

Therefore, as shown in FIG. 7B, between the 1-1st to 1-5th touch/common electrodes T11 to T15 and the 2-1st to 2-5th touch/common electrodes T21 to T25 Since the formed mutual capacitance is sensed through the 2-1st to 2-5th touch/common electrodes T21 to T25 to obtain the sensing voltage Vrx, the sensing position of the first horizontal position is shown in FIG. 7C. (h11 to h15) can be obtained.

Next, the touch controller TC stops supplying the 2-1st switching control signal C21 and transmits the 2-2nd switching control signal C22 to the 2nd multiplexer MUX-M1 of the multiplexer MUX. is supplied, the 2-2 switching control signal C22 is supplied to the control terminals of the m2-1 to m2-20 switching elements mSb01 to mSb20 of the second multiplexer MUX-M1, and is supplied to the control terminals of the m2-th switching elements mSb01 to mSb20. The -1st to m2-20th switching elements (mSb01 to mSb20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is supplied to the 3-1st to 3-5th touch/common electrodes T31 to T35 in the third row. Also, the 2-1st to 2-5th touch/common electrodes T21 to T25 of the second row are respectively connected to the first input terminals of the first to fifth integrators I1 to I5.

Therefore, as shown in FIG. 7D, between the 2-1st to 2-5th touch/common electrodes T21 to T25 and the 3-1st to 3-5th touch/common electrodes T31 to T35 Since the formed mutual capacitance is sensed through the 2-1st to 2-5th touch/common electrodes T21 to T25 to obtain the sensing voltage Vrx, the sensing position of the second horizontal position is shown in FIG. 7E. fields (h21 to h25) can be obtained.

Next, the touch controller TC stops supplying the 2-2 switching control signal C22 and transmits the 2-3 switching control signal C23 to the 2 multiplexer MUX-M1 of the multiplex unit MUX. is supplied, the 2-3 switching control signal C23 is supplied to the control terminals of the m3-1 to m3-20 switching elements mSc01 to mSc20 of the second multiplexer MUX-M1 and is supplied to the m3-th switching control signal C23. The -1st to m3-20th switching elements (mSc01 to mSc20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is supplied to the 3-1st to 3-5th touch/common electrodes T31 to T35 in the third row. Also, the 4-1st to 4-5th touch/common electrodes T41 to T45 in the fourth row are respectively connected to the first input terminals of the first to fifth integrators I1 to I5.

Therefore, as shown in FIG. 7D, between the 3-1st to 3-5th touch/common electrodes T31 to T35 and the 4-1st to 4-5th touch/common electrodes T41 to T45 Since the formed mutual capacitance is sensed through the 4-1st to 4-5th touch/common electrodes T41 to T45 to obtain the sensing voltage Vrx, the sensing position of the third horizontal position is shown in FIG. 7E. (h31 ~ h35) can be obtained.

3. Mutual capacitance sensing

When the first mutual capacitance sensing is completed, the second mutual capacitance sensing is performed.

Hereinafter, the second mutual capacitance sensing step will be described with reference to FIGS. 8A to 8E. FIG. 8A is a circuit diagram showing a configuration for sensing touch/common electrodes of a display device with a built-in touch sensor according to an embodiment of the present invention after first mutual capacitance sensing, and FIG. 8B is a second mutual capacitance sensing configuration. A plan view for explaining the step of sensing the touch/common electrodes in the 2-1 mutual capacitance method using the circuit diagram shown in FIG. 8A, and FIG. 8C is the 2-1 mutual capacitance method shown in FIG. FIG. 8D is a plan view additionally illustrating sensing positions that can be sensed, and FIG. 8D is a plan view illustrating a step of sensing touch/common electrodes in a 2-2 mutual capacitance method using the circuit diagram shown in FIG. 8A. FIG. 8E is a plan view additionally illustrating sensing positions that can be sensed in the 2-2 mutual capacitance method shown in FIG. 8D.

Referring to FIG. 8A , the touch sensor built-in display device according to an embodiment of the present invention includes a third multiplexer MUX-M2 of the multiplex unit MUX for second mutual capacitance sensing. The third multiplexer MUX-M2 includes n1-1 to n420th switching elements nSa01 to nSa20, nSb01 to nSb20, nSc01 to nSc20, and nSd01 to nSd20.

The n1-1th switching element nSa01 includes a first terminal connected to the 1-1st touch/drive routing wire W11 connected to the 1-1st touch/drive electrode T11, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-2 th switching element nSa02 includes a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-3 th switching element nSa03 includes a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-4th switching element nSa04 includes a first terminal connected to the 4-1 touch/drive routing wire W31 connected to the 4-1 touch/drive electrode T31, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-5th switching element nSa05 includes a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-1 control signal (C31) supplied from the touch controller (TC).

The n1-6th switching element nSa06 includes a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22, and a second integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-1 control signal (C31) supplied from the touch controller (TC).

The n1-7th switching element nSa07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-1 control signal (C31) supplied from the touch controller (TC).

The n1-8th switching element nSa08 includes a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42, and a fourth integrator I4. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-1 control signal (C31) supplied from the touch controller (TC).

The n1-9th switching element nSa09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-10th switching element nSa10 has a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-11th switching element nSa11 has a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-12th switching element nSa12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-13th switching element nSa13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-14th switching element nSa14 has a first terminal connected to the 2-4 touch/drive routing wire W24 connected to the 2-4 touch/drive electrode T24 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-15th switching element nSa15 has a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-16th switching element nSa16 has a first terminal connected to the 4-4th touch/drive routing wire W44 connected to the 4-4th touch/drive electrode T44 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-17th switching element nSa17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-18th switching element nSa18 has a first terminal connected to the 2-5 touch/drive routing wire W25 connected to the 2-5 touch/drive electrode T25 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-19th switching element nSa19 has a first terminal connected to the 3-5 touch/drive routing wire W35 connected to the 3-5 touch/drive electrode T35 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n1-20th switching element nSa20 has a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-1 control signal C31 supplied from the touch controller TC.

The n2-1st switching element nSb01 is connected to the first terminal connected to the 1-1st touch/drive routing wire W11 connected to the 1-1st touch/drive electrode T11 and to the ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-2 th switching element nSb02 is connected to the first terminal connected to the 2-1st touch/drive routing wire W21 connected to the 2-1st touch/drive electrode T21 and to the ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-3 th switching element nSb03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-4th switching element nSb04 has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-5th switching element nSb05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-6th switching element nSb06 has a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-7th switching element nSb07 has a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-8th switching element nSb08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-9th switching element nSb09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-10th switching element nSb10 has a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-11th switching element nSb11 has a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-12th switching element nSb12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-13th switching element nSb13 includes a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 3-2 control signal (C32) supplied from the touch controller (TC).

The n2-14th switching element nSb14 includes a first terminal connected to the 2-4 touch/drive routing wire W24 connected to the 2-4 touch/drive electrode T24, and a second integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 3-2 control signal (C32) supplied from the touch controller (TC).

The n2-15th switching element nSb15 includes a first terminal connected to the 3-4 touch/drive routing wire W34 connected to the 3-4 touch/drive electrode T34, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 3-2 control signal (C32) supplied from the touch controller (TC).

The n2-16th switching element nSb16 includes a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44, and a fourth integrator I4. It includes a second terminal connected to the first input terminal (a) of and a control terminal for receiving the 3-2 control signal (C32) supplied from the touch controller (TC).

The n2-17th switching element nSb17 includes a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-18th switching element nSb18 includes a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-19th switching element nSb19 includes a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n2-20th switching element nSb20 includes a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-2 control signal C32 supplied from the touch controller TC.

The n3-1 th switching element nSc01 has a first terminal connected to the 1-1 touch/drive routing wire W11 connected to the 1-1 touch/drive electrode T11 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-2 th switching element nSc02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-3 switching element nSc03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-4th switching element nSc04 has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-5th switching element nSc05 includes a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12, and a first integrator I1. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-3 control signal (C33) supplied from the touch controller (TC).

The n3-6th switching element nSc06 includes a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22, and a second integrator I2. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-3 control signal (C33) supplied from the touch controller (TC).

The n3-7th switching element nSc07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a third integrator I3. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-3 control signal (C33) supplied from the touch controller (TC).

The n3-8th switching element nSc08 includes a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42, and a fourth integrator I4. It includes a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-3 control signal (C33) supplied from the touch controller (TC).

The n3-9th switching element nSc09 includes a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-10th switching element nSc10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-11th switching element nSc11 includes a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-12th switching element nSc12 includes a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-13th switching element nSc13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-14th switching element nSc14 has a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-15th switching element nSc15 has a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-16th switching element nSc16 has a first terminal connected to the 4-4th touch/drive routing wire W44 connected to the 4-4th touch/drive electrode T44 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-17th switching element nSc17 has a first terminal connected to the 1-5 touch/drive routing wire W15 connected to the 1-5 touch/drive electrode T15 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-18th switching element nSc18 has a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-19th switching element nSc19 has a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n3-20th switching element nSc20 has a first terminal connected to the 4-5 touch/drive routing wire W45 connected to the 4-5 touch/drive electrode T45 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 3-3 control signal C33 supplied from the touch controller TC.

The n4-1st switching element nSd01 is connected to the first terminal connected to the 1-1st touch/drive routing wire W11 connected to the 1-1st touch/drive electrode T11 and to the ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-2 th switching element nSd02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-3 th switching element nSd03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-4th switching element nSd04 has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-5th switching element nSd05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-6th switching element nSd06 has a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-7th switching element nSd07 has a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-8th switching element nSd08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-9th switching element nSd09 includes a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-4th control signal C34 supplied from the touch controller TC.

The n4-10th switching element nSd10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-4th control signal C34 supplied from the touch controller TC.

The n4-11th switching element nSd11 includes a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-4th control signal C34 supplied from the touch controller TC.

The n4-12th switching element nSd12 includes a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 3-4th control signal C34 supplied from the touch controller TC.

The n4-13th switching element nSd13 includes a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14, and a fourth integrator I4. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-4th control signals (C34) supplied from the touch controller (TC).

The n4-14th switching element nSd14 includes a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24, and a first integrator I1. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-4th control signals (C34) supplied from the touch controller (TC).

The n4-15th switching element nSd15 includes a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34, and a second integrator I2. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-4th control signals (C34) supplied from the touch controller (TC).

The n4-16th switching element nSd16 includes a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44, and a third integrator I3. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 3-4th control signals (C34) supplied from the touch controller (TC).

The n4-17th switching element nSd17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-18th switching element nSd18 has a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-19th switching element nSd19 has a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

The n4-20th switching element nSd20 has a first terminal connected to the 4-5 touch/drive routing wire W45 connected to the 4-5 touch/drive electrode T45 and a ground terminal GND. It includes a second terminal to be connected and a control terminal to receive the 3-4 control signals C34 supplied from the touch controller TC.

Next, the second mutual capacitance sensing step in the vertical direction will be described with reference to FIGS. 8A to 8E.

First, when the touch controller TC supplies the 3-1st switching control signal C31 to the 3rd multiplexer MUX-M2 of the multiplex unit MUX, the 3-1st switching control signal C31 is 3 It is supplied to the control terminals of the n1-1 to n1-20th switching elements (nSa01 to nSa20) of the multiplexer (MUX-M2) so that the n1-1 to n1-20th switching elements (nSa01 to nSa20) turn on

Accordingly, the touch sensor driving voltage Vtx is supplied to the 1-1st to 4-1st touch/common electrodes T11 to T41 in the first row. Also, the 1-2th to 4-2nd touch/common electrodes T12 to T42 in the second column are respectively connected to the first input terminals of the first to fourth integrators I1 to I4.

Therefore, as shown on the left side of FIG. 8B, the 1-1 to 4-1 touch/common electrodes T11 to T41 and the 1-2 to 4-2 touch/common electrodes T12 to T42 Since the mutual capacitance formed therebetween is sensed through the 1-2th to 4-2th touch/common electrodes T12 to T42 to obtain the sensing voltage Vrx, as shown on the left side of FIG. 8E, the first Sensing positions v11 to v14 of the vertical position may be obtained.

Next, the touch controller TC stops supplying the 3-1 switching control signal C31 and sends the 3-2 switching control signal C32 to the 3 multiplexer MUX-M2 of the multiplex unit MUX. is supplied, the 3-2 switching control signal C32 is supplied to the control terminals of the n2-1 to n2-20 switching elements nSb01 to nSb20 of the third multiplexer MUX-M2, and is supplied to the n2-th switching control signal C32. -1 to n2-20 th switching elements (nSb01 to nSb20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is supplied to the 1-5th to 4-5th touch/common electrodes T15 to T45 in the fifth column. In addition, the 1-4th to 4th-4th touch/common electrodes T14 to T44 in the fourth column are respectively connected to the first input terminals of the first to fourth integrators I1 to I4.

Therefore, as shown on the right side of FIG. 8B, the 1-4th to 4-4th touch/common electrodes T14 to T44 and the 1-5th to 4-5th touch/common electrodes T15 to T45 Since the mutual capacitance formed therebetween is sensed through the 1-4th to 4-4th touch/common electrodes T14 to T44 to obtain the sensing voltage Vrx, as shown on the right side of FIG. 8E, the second Sensing positions v21 to v24 of the vertical position may be obtained.

Next, the touch controller TC stops supplying the 3-2 switching control signal C32 and sends the 3-3 switching control signal C33 to the 3 multiplexer MUX-M2 of the multiplex unit MUX. is supplied, the 3-3 switching control signal C33 is supplied to the control terminals of the n3-1 to n3-20 switching elements nSc1 to nSc20 of the third multiplexer MUX-M2 to control the n3-th switching control signal C33. The -1st to n3-20th switching elements (nSc01 to nSc20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is supplied to the 1-3 to 4-3 touch/common electrodes T13 to T43 in the third column. Also, the 1-2th to 4-2nd touch/common electrodes T12 to T42 in the second column are respectively connected to the first input terminals of the first to fourth integrators I1 to I4.

Therefore, as shown on the left side of FIG. 8D, the 1-2th to 4-2th touch/common electrodes T12 to T42 and the 1-3rd to 4-3th touch/common electrodes T13 to T43 Since the mutual capacitance formed therebetween is sensed through the 1-2th to 4-2th touch/common electrodes T12 to T42 to obtain the sensing voltage Vrx, as shown on the left side of FIG. 8E, the third Vertical sensing positions v31 to v34 may be obtained.

Next, the touch controller TC stops supplying the 3-3 switching control signal C33 and sends the 3-4 switching control signal C34 to the 3 multiplexer MUX-M2 of the multiplex unit MUX. is supplied, the 3rd-4th switching control signal C34 is supplied to the control terminals of the n4-1th to n4-20th switching elements nSd1 to nSd20 of the third multiplexer MUX-M2 and is supplied to the n4th switching control signal C34. -1 to n4-20 th switching elements (nSd01 to nSd20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is supplied to the 1-3 to 4-3 touch/common electrodes T13 to T43 in the third column. And, the 1-4th to 4th-4th touch/common electrodes T14 to T44 in the fourth column are respectively connected to the first input terminals of the 4th and 1st to 3rd integrators I4 and I1 to I3. Connected.

Therefore, as shown in the right side of FIG. 8D, the 1-3th to 4-3th touch/common electrodes T13 to T43 and the 1-4th to 4-4th touch/common electrodes T14 to T44 Since the mutual capacitance formed therebetween is sensed through the 1-4th to 4-4th touch/common electrodes T14 to T44 to obtain the sensing voltage Vrx, as shown on the right side of FIG. 8E, the fourth Vertical sensing positions v41 to v44 may be obtained.

4. Third mutual capacitive sensing

When the second mutual capacitance sensing is completed, the third mutual capacitance sensing is performed.

Hereinafter, the third mutual capacitance sensing step will be described with reference to FIGS. 9A to 9I. 9A is a circuit diagram showing a configuration for sensing touch/common electrodes of a display device with a built-in touch sensor according to an embodiment of the present invention after sensing in a second mutual capacitance method in a third mutual capacitance method, and FIG. 9B is a plan view for explaining the step of sensing the touch/common electrodes shown in FIG. 9A by the 3-1 mutual capacitance method, and FIG. 9C is the sensing sensed by the 3-1 mutual capacitance method shown in FIG. 9B. FIG. 9D is a plan view illustrating a step of sensing the touch/common electrodes shown in FIG. 9A in a 3-2 mutual capacitance method, and FIG. 2 is a plan view showing sensing positions sensed by the mutual capacitance method, and FIG. 9f is a plan view illustrating a step of sensing the touch/common electrodes shown in FIG. 9a by the 3-3 mutual capacitance method, and FIG. 9g is a plan view showing sensing positions sensed by the 3-3 mutual capacitance method shown in FIG. 9F, and FIG. 9H is a step of sensing the touch/common electrodes shown in FIG. 9A by the 3-4 mutual capacitance method. FIG. 9i is a plan view illustrating sensing positions sensed by the 3-4 mutual capacitance method shown in FIG. 9h.

Referring to FIG. 9A , the touch sensor built-in display device according to an embodiment of the present invention includes a fourth multiplexer MUX-M3 of the multiplex unit MUX for third mutual capacitance sensing. The fourth multiplexer MUX-M3 includes the o1-1 to o3-20th switching elements oSa01 to oSa20, oSb01 to oSb20, oSc01 to oSc20, and oSd01 to oSd20.

The o1-1st switching element oSa01 has a first terminal connected to the 1-1st touch/drive routing wire W11 connected to the 1-1st touch/drive electrode T11 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-2th switching element oSa02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-3th switching element oSa03 includes a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31, and a first integrator I1. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-1 control signal (C41) supplied from the touch controller (TC).

The o1-4th switching element oSa04 includes a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-5th switching element oSa05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-6th switching element oSa06 has a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-7th switching element oSa07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-8th switching element oSa08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42, and a second integrator I2. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-1 control signal (C41) supplied from the touch controller (TC).

The o1-9th switching element oSa09 includes a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13, and a third integrator I3. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-1 control signal (C41) supplied from the touch controller (TC).

The o1-10th switching element oSa10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-11th switching element oSa11 has a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-12th switching element oSa12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-13th switching element oSa13 includes a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-14th switching element oSa14 includes a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24, and a third integrator I3. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-1 control signal (C41) supplied from the touch controller (TC).

The o1-15th switching element oSa15 includes a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-16th switching element oSa16 has a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-17th switching element oSa17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-18th switching element oSa18 includes a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o1-19th switching element oSa19 includes a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35, and a fifth integrator I5. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-1 control signal (C41) supplied from the touch controller (TC).

The o1-20th switching element oSa20 has a first terminal connected to the 4-5 touch/drive routing wire W45 connected to the 4-5 touch/drive electrode T45 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-1 control signal C41 supplied from the touch controller TC.

The o2-1th switching element oSb01 is connected to the first terminal connected to the 1-1st touch/drive routing wire W11 connected to the 1-1st touch/drive electrode T11 and to the ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-2 switching element oSb02 includes a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21, and a first integrator I1. A second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-2 control signal (C42) supplied from the touch controller (TC).

The o2-3 switching element oSb03 includes a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-4th switching element (oSb04) has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-5th switching element oSb05 has a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-6th switching element oSb06 includes a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-7th switching element oSb07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a second integrator I2. A second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-2 control signal (C42) supplied from the touch controller (TC).

The o2-8th switching element oSb08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-9th switching element oSb09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-10th switching element oSb10 has a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-11th switching element oSb11 includes a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33, and a touch sensor driving voltage source (Vtx ) and a control terminal for receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-12th switching element oSb12 includes a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43, and a third integrator I3. A second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-2 control signal (C42) supplied from the touch controller (TC).

The o2-13th switching element oSb13 includes a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14, and a fourth integrator I4. A second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-2 control signal (C42) supplied from the touch controller (TC).

The o2-14th switching element oSb14 includes a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-15th switching element oSb15 has a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-16th switching element oSb16 has a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-17th switching element oSb17 includes a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15, and a touch sensor driving voltage source (Vtx ) and a control terminal for receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-18th switching element oSb18 includes a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25, and a fifth integrator I5. A second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-2 control signal (C42) supplied from the touch controller (TC).

The o2-19th switching element oSb19 has a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o2-20th switching element oSb20 has a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-2 control signal C42 supplied from the touch controller TC.

The o3-1th switching element oSc01 includes a first terminal connected to the 1-1 touch/drive routing wire W11 connected to the 1-1 touch/drive electrode T11, and a first integrator I1. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-3 control signal (C43) supplied from the touch controller (TC).

The o3-2 switching element oSc02 includes a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-3 switching element oSc03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-4th switching element oSc04 has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-5th switching element oSc05 includes a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-6th switching element oSc06 includes a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22, and a second integrator I2. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-3 control signal (C43) supplied from the touch controller (TC).

The o3-7th switching element oSc07 includes a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-8th switching element oSc08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-9th switching element oSc09 has a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-10th switching element oSc10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-11th switching element oSc11 includes a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33, and a third integrator I3. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-3 control signal (C43) supplied from the touch controller (TC).

The o3-12th switching element oSc12 includes a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-13th switching element oSc13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-14th switching element oSc14 has a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-15th switching element oSc15 includes a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-16th switching element oSc16 has a first terminal connected to the 4-4 touch/drive routing wire W44 connected to the 4-4 touch/drive electrode T44, and a fourth integrator I4. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-3 control signal (C43) supplied from the touch controller (TC).

The o3-17th switching element oSc17 has a first terminal connected to the 1-5th touch/drive routing wire W15 connected to the 1-5th touch/drive electrode T15 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-18th switching element oSc18 has a first terminal connected to the 2-5 touch/drive routing wire W25 connected to the 2-5 touch/drive electrode T25 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-19th switching element oSc19 has a first terminal connected to the 3-5 touch/drive routing wire W35 connected to the 3-5 touch/drive electrode T35 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o3-20th switching element oSc20 has a first terminal connected to the 4-5 touch/drive routing wire W45 connected to the 4-5 touch/drive electrode T45 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-3 control signal C43 supplied from the touch controller TC.

The o4-1th switching element oSd01 has a first terminal connected to the 1-1 touch/drive routing wire W11 connected to the 1-1 touch/drive electrode T11 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-2th switching element oSd02 has a first terminal connected to the 2-1 touch/drive routing wire W21 connected to the 2-1 touch/drive electrode T21 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-3 switching element oSd03 has a first terminal connected to the 3-1 touch/drive routing wire W31 connected to the 3-1 touch/drive electrode T31 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-4th switching element oSd04 has a first terminal connected to the 4-1 touch/drive routing wire W41 connected to the 4-1 touch/drive electrode T41 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-5th switching element oSd05 includes a first terminal connected to the 1-2 touch/drive routing wire W12 connected to the 1-2 touch/drive electrode T12, and a second integrator I2. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-4th control signal (C44) supplied from the touch controller (TC).

The o4-6th switching element oSd06 includes a first terminal connected to the 2-2 touch/drive routing wire W22 connected to the 2-2 touch/drive electrode T22, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-7th switching element oSd07 has a first terminal connected to the 3-2 touch/drive routing wire W32 connected to the 3-2 touch/drive electrode T32 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-8th switching element oSd08 has a first terminal connected to the 4-2 touch/drive routing wire W42 connected to the 4-2 touch/drive electrode T42 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-9th switching element oSd09 includes a first terminal connected to the 1-3 touch/drive routing wire W13 connected to the 1-3 touch/drive electrode T13, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-10th switching element oSd10 includes a first terminal connected to the 2-3 touch/drive routing wire W23 connected to the 2-3 touch/drive electrode T23, and a third integrator I3. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-4th control signal (C44) supplied from the touch controller (TC).

The o4-11th switching element oSd11 includes a first terminal connected to the 3-3 touch/drive routing wire W33 connected to the 3-3 touch/drive electrode T33, and a touch sensor driving voltage source (Vtx ) and a control terminal for receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-12th switching element oSd12 has a first terminal connected to the 4-3 touch/drive routing wire W43 connected to the 4-3 touch/drive electrode T43 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-13th switching element oSd13 has a first terminal connected to the 1-4th touch/drive routing wire W14 connected to the 1-4th touch/drive electrode T14 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-14th switching element oSd14 includes a first terminal connected to the 2-4th touch/drive routing wire W24 connected to the 2-4th touch/drive electrode T24, and a touch sensor driving voltage source (Vtx ) and a control terminal for receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-15th switching element oSd15 includes a first terminal connected to the 3-4th touch/drive routing wire W34 connected to the 3-4th touch/drive electrode T34, and a fourth integrator I4. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-4th control signal (C44) supplied from the touch controller (TC).

The o4-16th switching element oSd16 includes a first terminal connected to the 4-4th touch/drive routing wire W44 connected to the 4-4th touch/drive electrode T44, and a touch sensor driving voltage source (Vtx). ) and a control terminal for receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-17th switching element oSd17 has a first terminal connected to the 1-5 touch/drive routing wires W15 connected to the 1-5 touch/drive electrodes T15 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-18th switching element oSd18 has a first terminal connected to the 2-5th touch/drive routing wire W25 connected to the 2-5th touch/drive electrode T25 and a ground terminal GND. A second terminal connected thereto and a control terminal receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-19th switching element oSd19 includes a first terminal connected to the 3-5th touch/drive routing wire W35 connected to the 3-5th touch/drive electrode T35, and a touch sensor driving voltage source (Vtx ) and a control terminal for receiving the 4-4th control signal C44 supplied from the touch controller TC.

The o4-20th switching element oSd20 includes a first terminal connected to the 4-5th touch/drive routing wire W45 connected to the 4-5th touch/drive electrode T45, and a fifth integrator I5. and a second terminal connected to the first input terminal (a) of and a control terminal receiving the 4-4th control signal (C44) supplied from the touch controller (TC).

Next, the third mutual capacitance sensing step in the diagonal direction will be described with reference to FIGS. 9A to 9I.

First, when the touch controller TC supplies the 4-1st switching control signal C41 to the 4th multiplexer MUX-M3 of the multiplex unit MUX, the 4-1st switching control signal C41 is 4 It is supplied to the control terminals of the o1-1 to o1-20th switching elements (oSa01 to oSa20) of the multiplexer (MUX-M3) to control the o1-1 to o1-20th switching elements (oSa01 to oSa20). turn on

Accordingly, the touch sensor driving voltage Vtx is applied to the 4-1st touch/common electrodes T41 in the 4th row and column 1, the 4-2nd touch/common electrode T42 in the 3rd row and 2nd column, and the 2nd row and 3rd column. The 2-3rd touch/common electrode T23, the 1-4th touch/common electrode T14 in the first row and 4th column, the 3rd-4th touch/common electrode T34 in the 3rd row and 4th column, and the second row It is supplied to the 2nd-5th touch/common electrodes T25 in the 5th column. The 3-1st touch/common electrode T31 in the third row and column 1 is connected to the first input terminal of the first integrator I1, and the 4-2nd touch/common electrode T42 in the 4th row and 2nd column is connected to the first input terminal of the second integrator I2, and the 1-3 touch/common electrodes T13 in the first row and third column are connected to the first input terminal of the third integrator I3, and The 2nd-4th touch/common electrode T24 in row 4 column is connected to the first input terminal of the 4th integrator I4, and the 3rd-5th touch/common electrode T35 in 3rd row 5th column is connected to the 5th integrator I4. It is connected to the first input terminal of (I5).

As a result, sensing positions d11, d12, and d13 as shown in FIG. 9C are obtained.

Specifically, as shown in FIG. 9B, between the 3-1st touch/common electrode T31 and the 3-2nd touch/common electrode T32, between the 3-1st touch/common electrode T31 and the 4th-1st touch/common electrode T31. Between the 1st touch/common electrode T32, between the 4-1st touch/common electrode T41 and the 4-2nd touch/common electrode T42, and between the 4-2nd touch/common electrode T42 and the 3rd The sensing position d11 as shown in FIG. 8E is obtained by the mutual capacitance formed between the -2 touch/common electrodes T32.

In addition, between the 1-3 touch/common electrode T13 and the 1-4 touch/common electrode T14, the 1-3 touch/common electrode T13 and the 2-3 touch/common electrode T23 between the 2-3rd touch/common electrode T23 and the 2-4th touch/common electrode T24, and between the 2-4th touch/common electrode T24 and the 1-4th touch/common electrodes ( The sensing position d12 as shown in FIG. 9C is obtained by the mutual capacitance formed between T42).

In addition, between the 2-4th touch/common electrode T24 and the 2-5th touch/common electrode T25, the 2-4th touch/common electrode T24 and the 3-4th touch/common electrode T34 between the 3-4th touch/common electrode T34 and the 3-5th touch/common electrode T35, and between the 3-5th touch/common electrode T35 and the 2-5th touch/common electrodes ( The sensing position d13 as shown in FIG. 9C is obtained by the mutual capacitance formed between T25).

Next, the touch controller TC stops supplying the 4-1 switching control signal C41, and the 4-2 switching control signal C42 is sent to the 3 multiplexer MUX-M2 of the multiplex unit MUX. ) is supplied, the 4-2 switching control signal C42 is supplied to the control terminals of the o2-1 to o2-20 switching elements oSb01 to oSb20 of the 4th multiplexer MUX-M3. The o2-1 to o2-20th switching elements (oSb01 to oSb20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is applied to the 3-1st touch/common electrodes T31 in the third row and column 1, the 2-2nd touch/common electrode T22 in the second row and second column, and the fourth row and second column. The 4-2nd touch/common electrode T42, the 3-3rd touch/common electrode T33 in the third row and column 3, the 2-4th touch/common electrode T24 in the second row and fourth column, and the first row It is supplied to the 1st-5th touch/common electrodes T15 in the 5th column. The 2-1st touch/common electrode T21 in the second row and column 1 is connected to the first input terminal of the first integrator I1, and the 3-2nd touch/common electrode T32 in the 3rd row and 2nd column is connected to the first input terminal of the second integrator I2, and the 4-3 touch/common electrode T43 in the fourth row and third column is connected to the first input terminal of the third integrator I3, and The 1st-4th touch/common electrode T14 in row 4 column is connected to the first input terminal of the 4th integrator I4, and the 2nd-5th touch/common electrode T25 in the 2nd row 5th column is connected to the 5th integrator. It is connected to the first input terminal of (I5).

As a result, sensing positions d21, d22, and d23 as shown in FIG. 9E are obtained.

Specifically, as shown in FIG. 9D, between the 2-1st touch/common electrode T21 and the 2-2nd touch/common electrode T22, between the 2-1st touch/common electrode T21 and the 3rd-first touch/common electrode T21. Between the 1st touch/common electrode T31, between the 3-1st touch/common electrode T31 and the 3-2nd touch/common electrode T32, and between the 3-2nd touch/common electrode T32 and the 3rd The sensing position d21 as shown in FIG. 9E is obtained by the mutual capacitance formed between the -2 touch/common electrodes T32.

In addition, between the 3-2nd touch/common electrode T32 and the 3-3rd touch/common electrode T33, the 3-2nd touch/common electrode T32 and the 4-2nd touch/common electrode T42 between the 4-2nd touch/common electrode T42 and the 4-3rd touch/common electrode T43, and between the 4-3rd touch/common electrode T43 and the 3-3rd touch/common electrodes ( The sensing position d22 as shown in FIG. 9E is obtained by the mutual capacitance formed between T33).

In addition, between the 1-4th touch/common electrode T14 and the 1-5th touch/common electrode T15, the 1-4th touch/common electrode T14 and the 2-4th touch/common electrode T24 between the 2-4th touch/common electrode T24 and the 2-5th touch/common electrode T25, and between the 2-5th touch/common electrode T25 and the 1-5th touch/common electrodes ( The sensing position d23 as shown in FIG. 9E is obtained by the mutual capacitance formed between T15).

Next, the touch controller (TC) stops supplying the 4-2 switching control signal (C42), and the 4-3 switching control signal (C43) to the third multiplexer (MUX-M2) of the multiplex unit (MUX). ) is supplied, the 4-3 switching control signal C43 is supplied to the control terminals of the o3-1 to o3-20 switching elements oSc01 to oSc20 of the 4th multiplexer MUX-M3. The o3-1 to o3-20th switching elements (oSc01 to oSc20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is applied to the 2-1st touch/common electrodes T21 in the second row and column 1, the 1-2nd touch/common electrode T12 in the 1st row and 2nd column, and the 3rd row and 2nd column. The 3-2nd touch/common electrode T32, the 2-3rd touch/common electrode T23 in the second row and column 3, the 4-3rd touch/common electrode T43 in the 4th row and 3rd column, and the third row It is supplied to the 3rd-4th touch/common electrodes T34 in the fourth row. The 1-1st touch/common electrode T11 of the 1st row and 1st column is connected to the 1st input terminal of the 1st integrator I1, and the 2-2nd touch/common electrode T22 of the 2nd row and 2nd column is connected to the first input terminal of the second integrator I2, the 3-3 touch/common electrode T33 in the third row and third column is connected to the first input terminal of the third integrator I3, and The 4-4th touch/common electrode T44 in row 4 column is connected to the first input terminal of the fourth integrator I4.

As a result, sensing positions d31, d32, and d33 as shown in FIG. 9G are obtained.

Specifically, as shown in FIG. 9F, between the 1-1st touch/common electrode T11 and the 1-2nd touch/common electrode T12, between the 1-1st touch/common electrode T11 and the 2nd- Between the 1st touch/common electrode T21, between the 2-1st touch/common electrode T21 and the 2-2nd touch/common electrode T22, and between the 2-2nd touch/common electrode T22 and the 1st The sensing position d31 as shown in FIG. 9G is obtained by the mutual capacitance formed between the -2 touch/common electrodes T12.

In addition, between the 2-2nd touch/common electrode T22 and the 2-3rd touch/common electrode T23, the 2-2nd touch/common electrode T22 and the 3-2nd touch/common electrode T32 between the 3-2nd touch/common electrode T32 and the 3-3rd touch/common electrode T33, and between the 3-3rd touch/common electrode T33 and the 2-3rd touch/common electrodes ( The sensing position d32 as shown in FIG. 9G is obtained by the mutual capacitance formed between T23).

In addition, between the 3-3rd touch/common electrode T33 and the 3-4th touch/common electrode T34, the 3-3rd touch/common electrode T33 and the 4-3rd touch/common electrode T43 between the 4-3rd touch/common electrode T43 and the 4-4th touch/common electrode T44, and between the 4-4th touch/common electrode T44 and the 3-4th touch/common electrodes ( The sensing position d33 as shown in FIG. 9G is obtained by the mutual capacitance formed between T34).

Next, the touch controller (TC) stops supplying the 4-3 switching control signal (C43), and the 4-4 switching control signal (C44) is transmitted to the third multiplexer (MUX-M2) of the multiplex unit (MUX). ) is supplied, the 4-4th switching control signal C44 is supplied to the control terminals of the o4-1th to o4-20th switching elements oSd01 to oSd20 of the 4th multiplexer MUX-M3. The o4-1 to o4-20th switching elements (oSd01 to oSd20) are turned on.

Accordingly, the touch sensor driving voltage Vtx is applied to the 2-2 touch/common electrodes T22 in the second row and column 2, the 1-3 touch/common electrodes T13 in the first row and third column, and the third row and column 3 The 3-3rd touch/common electrode T33, the 2-4th touch/common electrode T24 in the second row and 4th column, the 4th-4th touch/common electrode T44 in the 4th row and 4th column, and the 3rd row It is supplied to the 3-5th touch/common electrode T35 in the 5th column. The 1-2 touch/common electrode T11 in the first row and column 2 is connected to the first input terminal of the second integrator I2, and the 2-3 touch/common electrode T23 in the second row and column 3 is connected to the first input terminal of the second integrator I2. is connected to the first input terminal of the third integrator I3, and the 3rd-4th touch/common electrodes T34 in the third row and fourth column are connected to the first input terminal of the fourth integrator I4, and The 4th-5th touch/common electrode T45 in row 5 column is connected to the first input terminal of the 4th 5th integrator I5.

As a result, sensing positions d41, d42, and d43 as shown in FIG. 9I are obtained.

Specifically, as shown in FIG. 9H, between the 1-2nd touch/common electrode T12 and the 1-3rd touch/common electrode T13, between the 1-2nd touch/common electrode T12 and the 2nd- Between the 2-touch/common electrode T22, between the 2-2nd touch/common electrode T22 and the 2-3rd touch/common electrode T23, and between the 2-3rd touch/common electrode T23 and the 1st -3 The sensing position d41 as shown in FIG. 9I is obtained by the mutual capacitance formed between the touch/common electrodes T13.

In addition, between the 2-3rd touch/common electrode T23 and the 2-4th touch/common electrode T24, the 2-3rd touch/common electrode T23 and the 3-3rd touch/common electrode T33 between the 3-3rd touch/common electrode T33 and the 3-4th touch/common electrode T34, and between the 3-4th touch/common electrode T34 and the 2-4th touch/common electrodes ( The sensing position d42 as shown in FIG. 9I is obtained by the mutual capacitance formed between T24).

In addition, between the 3-4th touch/common electrode T34 and the 3-5th touch/common electrode T35, the 3-4th touch/common electrode T34 and the 4-4th touch/common electrode T44 between the 4-4th touch/common electrode T44 and the 4-5th touch/common electrode T45, and between the 4-5th touch/common electrode T45 and the 3-5th touch/common electrodes ( The sensing position d43 as shown in FIG. 9I is obtained by the mutual capacitance formed between T35).

Next, a display device with a built-in touch sensor according to a modified embodiment of the present invention will be described with reference to FIGS. 10 and 11 . 10 is a plan view showing the configuration of touch/common electrodes of a display device with a built-in touch sensor according to a modified embodiment of the present invention, and FIG. 11 is a plan view showing a touch sensing position obtained by the display device with a built-in touch sensor of FIG. 10 am.

The display device with a built-in touch sensor according to the modified embodiment of the present invention of FIG. 10 includes touch/common electrodes (T11' to T15', T21', T25', T31', T35', T41 to T45 disposed on each side). ') is smaller than the touch/common electrodes (T11 to T15, T21, T25, T31, T35, and T41 to T45) shown in FIG. It is the same as the built-in display device. Therefore, in order to avoid redundant description, descriptions of the configuration and touch sensing of FIG. 10 are omitted.

According to the touch sensor built-in display device according to the modified embodiment shown in FIG. 10, as shown in FIG. 11, since the distance between the inner sensing positions and the sensing positions of each side is narrowed, it is disposed at the corner or each side. When a touch is performed at a location where a touch is performed, there is an advantage in that touch resolution can be improved.

In the display device with a built-in touch sensor according to the above-described embodiments of the present invention, the size of the touch/common electrode can be formed to be 4 times or more smaller than the size of the conventional touch/common electrode while maintaining the same touch resolution as the conventional one. there is.

Referring to FIGS. 12A and 12B , a conventional display device with a built-in touch sensor will be compared with a display device with a built-in touch sensor according to an embodiment of the present invention. 12A is a plan view showing touch/common electrodes and touch sensing positions of a conventional display device with a built-in touch sensor, and FIG. 12B is a plane showing touch/common electrodes and touch points of a display device with a built-in touch sensor according to an embodiment of the present invention. It is a plan view showing the sensing locations.

As shown in FIG. 12A, in a display device with a built-in touch sensor, touch/common electrodes are arranged in 10 horizontally and 8 vertically, totaling 80 (T11~T1a, T21~T2a, T31~T3a, T41~T4a). , T51~T5a, T61~T6a, T71~T7a, T81~T8a). Therefore, the touch/common electrodes (11~T1a, T21~T2a, T31~T3a, T41~T4a, T51~T5a, T61~T6a, T71~T7a, T81~T8a) are sensed by the self-capacitance method. A total of 80 sensing positions (S11 to S1a, S21 to S2a, S31 to S3a, S41 to S4a, S51 to S5a, S61 to S6a, S71 to S7a, and S81 to S8a) are the same as the number of touch/common electrodes.

In contrast, in the display device with a built-in touch sensor according to an embodiment of the present invention, as shown in FIG. T31 to T35, T41 to T45). On the other hand, the number of sensing positions obtained by the self capacitance method and the mutual capacitance method of these touch/common electrodes is 80 (S11~S15, S21~S25, S31~S35a, S41~S45; h11~h15, which is four times the number of touch/common electrodes). , h11~h15, h11~h15, h11~h15; v11~v14, v11~v14, v11~v14, v41~v44; d11~d13, d21~d23, d31~d33, d41~d43).

As described above, according to the touch sensor built-in display device according to the embodiment of the present invention, the size of the conventional touch/common electrode can be increased by more than 4 times, so it can be applied to a large screen display device and can be used as a read-out IC (ROIC) Since the number of touch channels can be reduced, the technical effect of cost reduction can be obtained.

In addition, even if the size of the conventional touch/common electrode is increased more than four times, the same touch resolution can be obtained by self-capacitance sensing and first to third mutual capacitance sensing.

Next, touch/common electrodes of a display device with a built-in touch sensor according to an embodiment of the present invention will be described with reference to FIGS. 5 and 13A to 15C.

In the touch/common electrodes T11 to T45 of the display device with a built-in touch sensor according to the embodiment of FIG. 5 of the present invention, each side of the touch electrodes T11 to T45 is linear.

In the display device with a built-in touch sensor as shown in FIG. 5, when each touch/common electrode is formed in a rectangular shape and the size is 4.5 mm × 4.5 mm, the self-capacitance type sensing of the present invention can be achieved. The self-capacitance obtained through this was measured as 9.96 pF per touch/common electrode. In contrast, the mutual capacitance obtained through mutual capacitance sensing was measured to be 0.094pF. As such, since the capacitance measured by the mutual capacitance method is only 0.9% of the capacitance measured by the self-capacitance method, in the display device with a built-in touch sensor having a rectangular touch/common electrode configuration, There could be a difference in touch performance.

Therefore, it is necessary to increase a mutual capacitance value obtained through mutual capacitance sensing according to an embodiment of the present invention.

13 to 15 are diagrams illustrating various examples of a touch/common electrode for increasing a mutual capacitance value through mutual capacitance sensing according to an embodiment of the present invention.

13 is a plan view illustrating a first example of a touch/common electrode for increasing a mutual capacitance value according to an embodiment of the present invention. 14 is a plan view illustrating a second example of a touch/common electrode for increasing a mutual capacitance value according to an embodiment of the present invention. 15 is a plan view illustrating a third example of a touch/common electrode according to an embodiment of the present invention.

13 to 15, each of the touch/common electrodes T11 to T45 includes a stem portion Ta, at least one branch portion Tb extending from the stem portion Ta, and a stem portion ( and at least one concave portion Tc formed inside Ta). The branch portions Tb and the concave portions Tc of the touch/common electrodes adjacent to each other are arranged to be engaged with each other. In this specification, the term coupling (coupling) means that the branch portion and the concave portion are engaged with each other without physical contact.

Hereinafter, the touch/common electrode T22 disposed in the second row and the second column and the touch/common electrodes T12, T21, T23, and T32 adjacent thereto will be described as an example of an engagement structure of the touch/common electrodes adjacent to each other. do it with

The first concave portion Tc1 of the first side (left side) of the touch/common electrode T22 disposed in the second row and second column is the first concave portion Tc1 of the touch/common electrode T21 disposed in the second row and first column. It is coupled to the branch portion Tb1. The second branch portion Tb2 of the second side (upper side) of the touch/common electrode T22 is coupled to the second concave portion Tc2 of the touch/common electrode T12 disposed in the first row and second column. The first branch portion Tb1 of the third side (right side) of the touch/common electrode T22 is coupled to the first concave portion Tc1 of the touch/common electrode T23 disposed in the second row and third column. The second concave portion Tc2 of the fourth side (lower side) of the touch/common electrode T22 is coupled to the second branch portion Tb2 of the touch/common electrode T32 disposed in the third row and second column.

In this way, the first branch portions Tb1 of all touch/common electrodes adjacent to each other are combined with the first concave portions Tc1 of the adjacent touch/common electrodes, and the second branch portions Tb2 are the second concave portions. Combines with (Tc2).

As described above, each of the touch/common electrodes adjacent to each other is coupled between the first branch portions Tb1 and the first concave portions Tc1 and the second branch portions Tb2 are coupled with the second concave portions Tc2. The length of the side increases. Therefore, since the mutual capacitance value obtained by mutual capacitance sensing increases, an effect of increasing touch resolution can be obtained. Table 1 below shows when the size of each touch/common electrode according to the embodiment of FIG. 13 is 4.5 mm × 9.0 mm and the widths W of the branches Tb1 and Tb2 are 1.5 mm and 2.25 mm, respectively. and when the lengths (L) are 1.0 mm, 3.0 mm, and 6.0 mm, the value of mutual capacitance between the touch/common electrodes measured by the mutual capacitance method is shown. In Table 1, Cm represents the mutual capacitance before the touch, Cm' represents the mutual capacitance after the touch, and Cm represents the difference between the mutual capacitance before and after the touch, respectively, and the unit is pF.

1.0mm (L) 3.0mm (L) 6.0mm (L) 1.5mm (W) cm 0.93 cm 2.01 cm 3.71 cm' 0.77 cm' 1.65 cm' 3.01 cm 0.16 cm 0.35 cm 0.70 2.25mm (W) cm 0.75 cm 1.48 cm 2.62 cm' 0.62 cm' 1.21 cm' 2.12 cm 0.13 cm 0.26 cm 0.50

Table 1 is graphically represented as shown in FIG. 16 . 16 is a graph showing mutual capacitance values depending on the length and width of each branch of each touch/drive electrode in a touch sensor integrated display device according to an embodiment of the present invention.

As can be seen from Table 1 and FIG. 16, the mutual capacitance value (ie, the difference between the mutual capacitance values before and after the touch) is proportional to the length of the touch/common electrode branch and inversely proportional to the width. . In addition, the mutual capacitance value obtained by the touch/common electrode of the second example structure of the present invention is 0.13pF to 0.70pF, which is about 1.5 to 7.4 times larger than the 0.094pF obtained by the conventional touch/common electrode structure. can know

Through the above description, those skilled in the art will know that various changes and modifications are possible without departing from the technical spirit of the present invention. For example, in the embodiment of the present invention, an example in which the touch/common electrodes are arranged in 4 rows and 5 columns has been described, but the present invention is limited thereto only by way of example, and the rows and columns of the touch/common electrodes are It can be changed according to the needs of the display device. In addition, each touch/common electrode of the present invention includes a stem portion, a branch portion extending from the stem portion, and a concave portion formed into the stem portion, and the branch portions are bar-shaped, sawtooth-shaped, T-shaped, or inverted-T-shaped. Although it has been described as an example, the shape of the branch portion is not limited thereto, and may have any shape as long as it has a coupling portion that engages with each other in a concave or convex manner. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be determined by the claims.

100: display panel 104: timing controller
202: data driving circuit 204: scan driving circuit
C11~C44: switching control signal Ctd: touch/display control signal
MUX: multiplex unit MUX-S: first multiplexer
Sa01 to Sa20, Sb01 to Sb20, Sc01 to Sc20, Sd01 to Sd20: 1st switching element
MUX-M2: 2nd multiplexer
mSa01 to mSa20, mSb01 to mSb20, mSc01 to Sc20: 2nd switching element
MUX-M3: 3rd multiplexer
nSa01~nSa20, nSb01~nSb20, nSc01~nSc20, nSd01~nSd20: 3rd switching element
MUX-M4: 4th multiplexer
oSa01~oSa20, oSb01~oSb20, oSc01~oSc20, oSd01~Sd20: 4th switching element
SB: switching blocks SW1 to SW5: first to fifth switching units
IB: Integral blocks I1 to I5: 1st to 5th integrators
ROIC: Readout IC TC: Touch Controller
T11~T15, T21~T25, T31~T35, T41~T45: touch/common electrode
W11~W41, W12~W42, W13~W43, W14~W44, W15~W45: touch/common routing wiring

Claims (20)

It includes data lines and gate lines that cross each other, a plurality of touch/common electrodes that are divided and arranged in directions that cross each other, and a plurality of touch/common routing wires respectively connected to the plurality of touch/common electrodes. , a display panel that is time-division driven in a display driving period and a touch sensor driving period;
a data driving circuit supplying video data voltages to the data lines during the display driving period;
a scan driving circuit that sequentially supplies scan pulses synchronized with the video data voltage to the gate lines during the display driving period;
During the display driving period, a common voltage is supplied to the plurality of touch/common electrodes, and during the touch sensor driving period, after supplying a touch driving voltage to the plurality of touch/common electrodes a plurality of times, the plurality of touches / A multiplex unit that senses the common electrodes a plurality of times in a self-capacitance method and a mutual capacitance method;
a readout integrated circuit (IC) for receiving sensing voltages sensed from the plurality of touch/common electrodes via the multiplex unit during the touch sensor driving period; and
A touch controller supplying a plurality of switching control signals to the multiplex unit and calculating a touch position based on sensing voltages received from the readout IC;
The multiplex unit includes a first multiplexer for sensing the plurality of touch/common electrodes in a self-capacitance method, a second multiplexer for sensing the plurality of touch/common electrodes in a first mutual capacitance method in a horizontal direction, and A touch sensor including a third multiplexer for sensing the touch/common electrodes in a vertical second mutual capacitance method, and a fourth multiplexer for sensing the plurality of touch/common electrodes in a diagonal third mutual capacitance method Built-in display.
According to claim 1,
connected to the multiplex unit to supply the common voltage to the plurality of touch/common electrodes during the display driving period, and to supply the touch driving voltage to the plurality of touch/common electrodes during the touch sensor driving period; , a switching block that is switched to output the sensing voltages;
an integration block for integrating the sensing voltages supplied from the switching block and outputting the integrated sensing voltages to the readout IC during the touch sensor driving period; and
and a timing controller generating timing control signals for controlling operation timings of the data driving circuit and the scan driving circuit, and a touch/display control signal for controlling the switching block.
According to claim 2,
The first multiplexer includes input terminals connected to the plurality of touch/common electrodes, the switching block includes a plurality of switching units selectively connected to output terminals of the first multiplexer, and the integration block is a display device with a built-in touch sensor including a plurality of integrators respectively connected to the plurality of switching units.
According to claim 3,
The first multiplexer supplies a touch driving voltage supplied through the plurality of switching units to the plurality of touch/common electrodes during the touch sensor driving period, and senses each of the plurality of touch/common electrodes. A display device with a built-in touch sensor that outputs first sensing voltages.
According to claim 4,
The first multiplexer includes a plurality of 1-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 1-1 control signal supplied from the touch controller, and the plurality of touch/drive electrodes. A plurality of 1-2 switching elements connected to each of the electrodes and switched according to a 1-2 control signal supplied from the touch controller, and connected to each of the plurality of touch/drive electrodes supplied from the touch controller A plurality of 1-3 switching elements switched according to a 1-3 control signal that is connected to each of the plurality of touch/drive electrodes and switched according to a 1-4 control signal supplied from the touch controller A display device with a built-in touch sensor including a plurality of 1-4th switching elements.
According to claim 4,
The second multiplexer includes input terminals connected to the plurality of touch/common electrodes and output terminals selectively connected to the plurality of integrators.
According to claim 6,
During the touch sensor driving period, the second multiplexer converts the touch driving voltage supplied through the plurality of switching units to a plurality of touch/common electrodes of any one of the plurality of touch/common electrodes of the first and second columns adjacent to each other in the horizontal direction. A display device with a built-in touch sensor that supplies touch/common electrodes and outputs second sensing voltages obtained by sensing multiple/common electrodes in another row.
According to claim 7,
The second multiplexer includes a plurality of 2-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 2-1 control signal supplied from the touch controller, and the plurality of touch/drive electrodes. A plurality of 2-2 switching elements connected to each of the electrodes and switched according to the 2-2 control signal supplied from the touch controller, and connected to each of the plurality of touch/drive electrodes supplied from the touch controller A display device with a built-in touch sensor including a plurality of 2-3 switching elements that are switched according to a 2-3 control signal.
According to claim 7,
The third multiplexer includes input terminals connected to the plurality of touch/common electrodes and output terminals selectively connected to the plurality of integrators.
According to claim 9,
The third multiplexer, during the touch sensor driving period, transmits the touch driving voltage supplied through the plurality of switching units to one of the plurality of touch/common electrodes of the first row and the second row adjacent to each other in the vertical direction. A display device with a built-in touch sensor that supplies the plurality of touch/common electrodes and outputs third sensing voltages obtained by sensing the plurality/common electrodes of another row.
According to claim 10,
The third multiplexer includes a plurality of 3-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 3-1 control signal supplied from the touch controller, and the plurality of touch/drive electrodes. A plurality of 3-2 switching elements connected to each of the electrodes and switched according to a 3-2 control signal supplied from the touch controller, and connected to each of the plurality of touch/drive electrodes supplied from the touch controller A plurality of 3-3 switching elements switched according to a 3-3 control signal that is connected to each of the plurality of touch/drive electrodes and switched according to a 3-4 control signal supplied from the touch controller A display device with a built-in touch sensor including a plurality of 3-4 switching elements.
According to claim 10,
The fourth multiplexer includes input terminals connected to the plurality of touch/common electrodes and output terminals selectively connected to the plurality of integrators.
According to claim 12,
During the touch sensor driving period, the fourth multiplexer transmits the touch driving voltage supplied through the plurality of switching units in a diagonal direction to any one of a plurality of touch/common electrodes in first and second diagonal directions adjacent to each other in a diagonal direction. A display device with a built-in touch sensor for supplying to touch/common electrodes and outputting fourth sensing voltages obtained by sensing multiple/common electrodes in another diagonal direction.
According to claim 13,
The fourth multiplexer includes a plurality of 4-1 switching elements connected to each of the plurality of touch/drive electrodes and switched according to a 4-1 control signal supplied from the touch controller, and the plurality of touch/drive electrodes. A plurality of 4-2 switching elements connected to each of the electrodes and switched according to a 4-2 control signal supplied from the touch controller, and connected to each of the plurality of touch/drive electrodes supplied from the touch controller A plurality of 4-3 switching elements switched according to a 4-3 control signal that is connected to each of the plurality of touch/drive electrodes and switched according to a 4-4 control signal supplied from the touch controller A display device with a built-in touch sensor including a plurality of 4th-4th switching elements. According to claim 13,
The plurality of integrators integrate the first to fourth sensing voltages and output the integrated touch sensor to the read-out IC. According to any one of claims 1 to 15,
The touch/common electrodes positioned on each side of the plurality of touch/common electrodes are smaller in size than the other touch/common electrodes.
According to any one of claims 1 to 15,
Each of the plurality of touch/common electrodes includes a stem portion, at least one branch portion extending from the stem portion, and at least one concave portion formed inside the stem portion;
At least one branch of the touch/common electrode is disposed within a concave portion of the touch/common electrode adjacent thereto.
18. The method of claim 17,
The at least one branch part has a touch sensor embedded display device having one of a bar shape, a sawtooth shape, a T shape, and an inverted T shape.
18. The method of claim 17,
The plurality of touch/common electrodes have the same size as the display device with a built-in touch sensor.
18. The method of claim 17,
The touch/common electrodes positioned on each side of the plurality of touch/common electrodes are smaller in size than the other touch/common electrodes.

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