KR20150114405A - Touch panel, display device and method of driving the same - Google Patents

Abstract

The present invention relates to a touch panel, a display device, and a driving method thereof. More specifically, the display device in which at least two sub-reception electrodes are formed has an electrically insulated reception electrode which is disposed between every two sub-drive electrodes forming one driving electrode.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch panel, a display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel, a display device and a driving method thereof, and more particularly to a display device and a driving method thereof, in which a touch panel is formed on a panel.

The touch panel includes a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting display (OLED), an electrophoretic display (EPD) And is a type of an input device that is provided on the same display device and allows the user to directly touch the screen with a finger or a pen while viewing the display device to input information.

A method of manufacturing a liquid crystal display having a touch panel includes an add-on method in which a panel for outputting an image and a touch panel for detecting touch are separately manufactured and then joined together, And an in-cell system built in the system.

2. Description of the Related Art In recent years, in order to make a portable terminal such as a smart phone or a tablet PC slimmer, a demand for an in-cell type display device in which a touch panel is built in a panel of the display device is increasing.

In the in-cell type display device, the common electrodes for video output are divided into a plurality of touch driving areas and a plurality of touch sensing areas, as disclosed in U.S. Patent No. 7,859,521. The in-cell type display device detects mutual capacitance between mutual capacitance between the touch driving area and the touch sensing area, thereby measuring the amount of mutual capacitance generated when the touch is generated, thereby recognizing the touch.

In other words, the conventional in-cell type display device simultaneously performs the video output function and the touch detection function. To this end, in a conventional in-cell type display device, a common voltage is supplied to common electrodes during a video output period, and a touch driving signal is supplied to the common electrodes during a touch sensing period.

That is, in the mutual capacitance type in-cell type display device using the common electrode, the common electrode is also used as a driving electrode and a receiving electrode necessary for touch sensing, and the video output period and the touch sensing period are temporally separated.

Therefore, during the video output period, the driving electrode and the receiving electrode serve as a common electrode. In addition, a periodic driving pulse is applied to a driving electrode constituting a common electrode between the touch sensors, and a touch driver senses whether or not the touch driver uses a sensing signal received through a receiving electrode constituting a common electrode.

1 is a waveform diagram illustrating an image output period and a touch sensing period in a conventional in-cell type display device.

1, a period corresponding to one frame (hereinafter, simply referred to as a " one frame period ") corresponds to a video output period (Display) And touch sensing period (Touch).

A touch panel applied to a conventional in-cell type display device includes a driving electrode to which a common voltage is supplied during a video output period and a driving voltage is supplied between touch detectors, a common voltage is supplied during a video output period, As shown in Fig.

In the video output period, a common voltage is supplied to the driving electrode and the receiving electrode.

In the touch sensor, a pulse-shaped touch driving signal is supplied to the driving electrode, and a reference voltage is supplied to the receiving electrode.

In this case, when the one-frame period starts, the video output period starts first, and after the video output period, the touch sensing period advances.

2 is an exemplary view showing a configuration of a conventional touch panel using a capacitive method, and is an example of a configuration of a mutual touch panel in particular.

The touch panel using the capacitive method includes driving electrodes TX1 to TX6 to which a common voltage is supplied during a video output period and a touch driving signal is supplied between touch detectors, And receiving electrodes RX1 to RX4 to which a common voltage is supplied during the video output period and reference voltages are supplied between the touch detectors. The number of the driving electrodes and the number of the receiving electrodes may be variously changed according to the size and shape of the touch panel.

For example, when the touch driving signals are sequentially supplied to the driving electrodes TX1 to TX6, the sensing signals are received through the receiving electrodes RX1 to RX4. In this case, the touch driver supplies a plurality of repetitive touch driving signals to each of the driving electrodes to accumulate the sensing signals corresponding to the touch driving signals, It is possible to judge whether or not the touch panel is touching.

In the above-described conventional display device, the following problems may occur.

First, as the size of the touch panel constituting the display device is increased, the number of driving electrodes formed on the touch panel is increased, thereby increasing the time required for supplying the touch driving signal to the driving electrodes . Therefore, as the size of the touch panel increases, the period of time during which the touch can be detected is reduced. For example, when it is assumed that the touch driving signals are sequentially supplied to the ten driving electrodes constituting the touch panel for one second, the touch electrodes are sequentially driven by the twenty driving electrodes constituting the touch panel having the increased size In order for the signals to be supplied, it takes 2 seconds. Accordingly, when the size of the touch panel is increased, the number of times the touch panel is judged to be touched for one minute is reduced, thereby reducing the sensing sensitivity. This phenomenon may occur in the add-on type display device as well as in the in-cell type display device.

In particular, in the in-cell type display device, one frame period should be divided into a touch sensing period and a video output period, and a ratio of a touch sensing period and a video output period is also set to be constant. Therefore, assuming that the touch sensing period is constant, in a touch panel having an increased size, a period during which the touch driving signal is supplied to each driving electrode, that is, the number of touch driving signals must be reduced. As a result, the touch sensitivity in the in-cell type display device is reduced more than the touch sensitivity in the add-on type display device.

Thirdly, in the in-cell type display device, various common noises easily flow into the driving electrode and the receiving electrode, and the touch sensitivity is further reduced. The common noise flows into the driving electrode and the receiving electrode of the touch panel in a generally similar manner. Examples of the common noise include noise caused by static electricity, charger noise generated when the system battery is charged, noise caused by the display device driving signal, and backlight driving signal noise of the liquid crystal display device.

Fourth, such noise may occur at a specific frequency, a certain waveform, or in a form difficult to predict. Therefore, in order to solve the common noise, a variety of complicated noise signal processing filters must be added, thereby increasing the amount of computation.

Fifth, if the voltage of the touch driving signal is artificially increased to increase the touch sensitivity, the power consumption is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a plasma display panel in which at least two sub-receiving electrodes are formed for each of two sub- A touch panel, a display device, and a driving method thereof are provided.

In addition, in the present invention, two sub-receiving electrodes are formed between two sub-driving electrodes forming one driving electrode, two sub-receiving electrodes forming a pair of receiving electrodes electrically insulated from each other, A touch panel, a display device, and a driving method thereof, which are capable of reducing common noise by being connected to differential amplifiers.

According to an aspect of the present invention, there is provided a display device including: a panel on which an image is displayed; A touch panel including a plurality of driving electrodes and receiving electrodes; And a touch sensing unit configured to supply a touch driving signal to the plurality of driving electrodes and to determine whether the panel is touched through sensing signals received from the receiving electrodes, And a sub-driving electrode arranged in a first direction of the panel and connected to the driving electrode wiring, wherein the receiving electrode is arranged in a second direction perpendicular to the first direction and is connected to the sub- At least two sub-receiving electrodes constituting a receiving electrode electrically insulated from each other are formed between two sub-driving electrodes constituting one driving electrode.

According to an aspect of the present invention, there is provided a method of driving a display device, Supplying a touch driving signal to each of the driving electrodes arranged; Driving signal is supplied to the n-th driving electrode among the driving electrodes, the at least two receiving electrodes among the two sub-driving electrodes among the sub-driving electrodes constituting the n-th driving electrode, ; And analyzing the sensed signals to determine whether or not a touch is made in at least two positions arranged along a second direction perpendicular to the first direction between the two subordinate driving electrodes.

According to an aspect of the present invention, there is provided a touch panel including: a driving electrode including a plurality of sub-driving electrodes arranged in a first direction; And a plurality of sub-receiving electrodes arranged in a second direction, and at least two sub-receiving electrodes electrically insulated from each other are arranged between adjacent sub-driving electrodes.

According to the present invention, compared with the conventional method, the touch sensing can be performed at a speed twice as high as that of the conventional method, and thus the performance of the touch panel can be improved.

Further, the present invention is suitable for an in-cell type display device in which a sensing period is short because time-divisional driving is used. That is, according to the present invention, the touch sensing function of the in-cell type display device can be improved, and a large-screen type invisible display device having a touch panel can be developed.

According to the present invention, since at least two receiving electrodes electrically insulated from each other are disposed between adjacent sub-driving electrodes, the touch sensitivity can be improved by two receiving electrodes. According to the present invention, according to the present invention, at least two sensing electrodes electrically insulated from each other are arranged between adjacent sub-driving electrodes, and two sensing signals are detected with respect to a single touch driving signal supplied to the driving electrodes . Therefore, it is possible to perform touch sensing at a speed twice as fast.

In addition, there is an effect that a large-screen in-cell type display device can be developed by compensating the reduction of the touch signal intensity or compensating for the common noise by the differential amplifier connected to the receiving electrode.

FIG. 1 is a waveform diagram showing an image output period and a touch sensing period in a conventional in-cell type display device. FIG.
2 is an exemplary view showing a configuration of a conventional touch panel using a capacitive method.
3 is an exemplary view schematically showing a configuration of a display device according to the present invention;
4 is a view schematically showing a configuration of a touch panel applied to a display device according to a first embodiment of the present invention;
FIG. 5 is an exemplary view schematically showing a configuration of a touch panel applied to a display device according to a second embodiment of the present invention; FIG.
6 is a plan view of one embodiment of a panel applied to a display device according to the present invention.
7 is an exemplary view showing the configuration of a touch panel and a touch sensing unit applied to a display device according to a third embodiment of the present invention;
FIG. 8A and FIG. 8B are schematic views illustrating a configuration of a touch sensing unit applied to a display device according to a third embodiment of the present invention; FIG.
9 is a diagram illustrating a configuration of a touch panel and a touch sensing unit applied to a display device according to a fourth embodiment of the present invention.
10 is a plan view of an embodiment of a panel applied to a display device according to a third embodiment of the present invention.
11 is an exemplary view for explaining a method of manufacturing a panel applied to a display device according to the present invention.
FIG. 12 is another exemplary view for explaining a method of manufacturing a panel applied to a display device according to the present invention; FIG.
13 is a cross-sectional view taken along the line A-A 'shown in Fig. 12;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, for convenience of explanation, a liquid crystal display device will be described as an example of the present invention, but the present invention is not limited thereto. That is, the present invention can be applied to various display devices.

3 is an exemplary view schematically showing a configuration of a display device according to the present invention.

3, the display device according to the present invention includes a panel 100 on which an image is displayed, a touch panel 500 including a plurality of driving electrodes and receiving electrodes, A panel driver 200, 300, 400 for sequentially supplying scan pulses to the gate lines GL1 to GLg and supplying data voltages to the data lines DL1 to DLd formed on the panel 100, And a touch sensing unit 600 configured to supply a touch driving signal to the plurality of driving electrodes and to determine whether the panel is touched through sensing signals received from the receiving electrodes.

First, the panel 100 may be attached to the touch panel 500 by a bonding part such as UV resin, OCR (Optically Clear Resin) or OCA (Optically Clear Adhesive) The touch panel may be built in.

When the panel 100 is a liquid crystal panel, the lower substrate (TFT substrate) of the panel 100 includes a plurality of data lines DL1 to DLd, a plurality of gate lines GL1 to GLg, thin film transistors (TFTs) formed in pixels formed at intersections of the data lines and the gate lines, and thin film transistors (TFTs) formed in each of the pixels, And common electrodes for driving the liquid crystal filled in the pixel are formed along with the pixel electrode.

That is, the pixels are arranged in a matrix form by the intersection structure of the data lines DL1 to DLd and the gate lines GL1 to GLg, and each of the pixels includes the TFT, the pixel electrode, An electrode is formed. When the touch panel is built in the panel 100, the touch panel includes the common electrodes.

A black matrix (BM) and a color filter are formed on an upper substrate (CF substrate) of the panel 100.

A polarizing plate is attached to each of the upper substrate and the lower substrate of the panel 100, and an alignment layer for setting the pretilt angle of the liquid crystal is formed on the inner surface in contact with the liquid crystal. A column spacer CS for maintaining a cell gap may be formed between the upper substrate and the lower substrate of the panel 100.

However, as described above, the panel 100 may be formed in various types and shapes other than the liquid crystal panel.

3, the panel driver 200, 300, 400 includes a data driver (not shown) for supplying a data voltage to the data lines DL1 to DLd formed on the panel 100 A gate driver 200 for sequentially supplying the scan pulses to the gate lines GL1 to GLg formed in the panel 100 while the data voltage is output, And a timing controller (400) for controlling the gate driver (200).

The timing controller 400 receives a timing signal such as a data enable signal DE and a dot clock signal CLK from an external system and outputs the timing signal to the data driver 300 and the gate driver 200 And generates control signals (GCS, DCS) for controlling the operation timing.

In addition, the timing controller 400 rearranges the input image data input from the external system, and outputs the rearranged image data to the data driver 300.

The gate control signals GCS generated in the timing controller 400 include a gate start pulse GSP, a gate shift clock GSC, a gate output enable signal GOE, and the like.

A source start pulse SSP, a source shift clock signal SSC, a source output enable signal SOE and a polarity control signal POL are input to the data control signals DCS generated by the timing controller 400 .

The timing controller 400 may generate a touch control signal for controlling the operation timing of the touch sensing unit 600 to control the touch sensing unit 600.

That is, the timing controller 400 generates a touch synchronous signal (TSS) for repeating a plurality of video output periods and a plurality of touch sensing periods during one frame period, and transmits the generated touch synchronous signal TSS to the touch sensing unit 600 .

Next, the data driver 300 converts the image data input from the timing controller 400 into the data voltage, and supplies a data voltage for one horizontal line in each horizontal period in which a scan pulse is supplied to the gate line To the data lines. That is, the data driver 300 converts the image data into data voltages using gamma voltages supplied from a gamma voltage generator (not shown), and outputs the data voltages to the data lines.

The data driver 300 shifts a source start pulse (SSP) transmitted from the timing controller 400 according to a source shift clock (SSC) to generate a sampling signal. The data driver 300 latches the image data RGB input according to the source shift clock SSC according to the sampling signal and changes the data voltage to the data voltage, And supplies the data voltages to the data lines in units of horizontal lines in response to an Output Enable (SOE) signal.

For this, the data driver 300 may include a shift register unit, a latch unit, a digital-analog converter, and an output buffer.

The shift register unit outputs a sampling signal using the data control signals received from the timing controller 400.

The latch unit latches the digital image data (Data) sequentially received from the timing controller (400), and simultaneously outputs the digital image data (Data) to the digital-analog converter (DAC).

The digital-to-analog converter converts the image data transmitted from the latch unit into a data voltage of positive or negative polarity and outputs the same. That is, the digital-analog converter uses the gamma voltage supplied from the gamma voltage generator (not shown) to generate the image data in accordance with the polarity control signal POL transmitted from the timing controller 400, Polarity data voltage and outputs the data voltage to the data lines.

The output buffer outputs a positive or negative polarity data voltage transmitted from the digital-analog converter to the data lines of the panel according to a source output enable signal (SOE) transmitted from the timing controller (400) Output.

Lastly, the gate driver 200 shifts a gate start pulse (GSP) transmitted from the timing controller 400 according to a gate shift clock (GSC) On voltage Von to the scan lines GL1 to GLg. The gate driver 200 supplies a gate off voltage Voff to the gate lines GL1 to GLn during the remaining period when the scan pulse having the gate on voltage Von is not supplied.

In the above description, the data driver 300, the gate driver 200 and the timing controller 400 are independently configured. However, at least one of the data driver 300 and the gate driver 200 May be configured in the timing controller 400.

Third, the touch panel 500 applied to the present invention is formed in the panel 100 using a capacitive method. The touch panel may be formed on the panel 100 using an in-cell type, an ed-on type, or a hybrid in-cell type.

The in-cell type touch panel includes driving electrodes and receiving electrodes formed on the panel 100. That is, in the above-described Insel-type touch panel, both the driving electrodes and the receiving electrodes are formed on the panel 100.

The add-on type touch panel is fabricated independently of the panel 100 that outputs an image, and is then attached to the panel 100.

In the hybrid in-cell type touch panel, one of the driving electrode and the receiving electrode is formed on the lower substrate, and the other is formed on the upper substrate. For example, when the driving electrodes are formed on the lower substrate, the receiving electrodes may be formed on the upper substrate.

As described above, the touch panel 500 applied to the present invention may be formed in various forms such as an inshell type, an add-on type, or a hybrid insell type.

In addition, the driving electrodes and the receiving electrodes of the touch panel 500 may be formed in a metal-mesh structure. In this case, the touch panel has a low resistance and can be enlarged accordingly. Furthermore, since the metal mesh structure has superior bending characteristics to transparent electrodes such as ITO, it can be realized as a flexible touch panel. In addition, the touch panel 500 may be configured as a mutual or self-capacitance type, but the touch panel 500 applied to the present invention is configured in a mutual manner.

Therefore, for convenience of explanation, the present invention will be described below as an example of an inshell type touch panel 500 configured in a mutual manner.

The insensitive-type touch panel 500 includes driving electrodes and receiving electrodes, and the driving electrodes and the receiving electrodes constitute the common electrodes. That is, some of the common electrodes used for the video output are used as the driving electrodes, and a part of the common electrodes are used as the receiving electrodes.

In this case, each of the driving electrodes constituting the touch panel is composed of sub-driving electrodes connected to the driving electrode wiring.

Each of the receiving electrodes constituting the touch panel is composed of sub-receiving electrodes connected to a receiving electrode wiring.

In addition, at least two sub-receiving electrodes are formed to form a receiving electrode electrically insulated from each other between two sub-driving electrodes forming one driving electrode.

The touch panel 500 will be described in detail below with reference to the drawings.

Fourth, the touch sensing unit 600 senses whether the touch panel 500 is touched or touched by using the sensing signals received from the receiving electrodes. That is, when a touch driving signal for touch detection is sequentially supplied to the driving electrodes, when a user touches a specific area of the touch panel 500 with a finger or a pen, the driving electrodes and the receiving electrodes And the change of the capacitance changes the magnitude of the sensing signal transmitted from the receiving electrode to the touch sensing unit 600. [

The receiving electrodes are connected to the touch sensing unit 600 via receiving electrode lines RL1 to RLs and the driving electrodes are connected to the touch sensing unit 600 through driving electrode lines TL1 to TLk. And the touch sensing unit 600 determines whether the panel 100 is touched or touched by using the sensing signals received from the receiving electrodes as described above.

Particularly, the touch sensing unit 600 sequentially supplies the touch driving signals to the driving electrodes formed in the first direction of the panel 100. When the touch driving signal is supplied to the n < th > driving electrode among the driving electrodes, the touch sensing unit 600 includes at least two receiving electrodes formed between the sub- Lt; / RTI > Next, the touch sensing unit 600 analyzes the sensing signals to generate at least two of the sub-driving electrodes in the second direction perpendicular to the first direction It is determined whether or not the position is touched.

For this, the touch sensing unit 600 may include a touch driver for sequentially supplying the touch driving signal to the driving electrodes between the touch sensors, and a sensing unit for sensing the sensing signals transmitted from the sensing electrodes, And a touch receiver for determining whether the touch panel 500 is touched or touched.

The configuration and function of the touch sensing unit 600 will be described below in detail with reference to FIG.

4 is a schematic view showing a configuration of a touch panel applied to a display device according to a first embodiment of the present invention. Hereinafter, the touch panel 500 and the touch sensing unit 600 applied to the display device according to the first embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG.

The touch panel 500 includes a plurality of driving electrodes TX formed in a first direction of the panel 100 and a plurality of receiving electrodes RX formed in a second direction perpendicular to the first direction, . The number of the driving electrodes TX and the number of the receiving electrodes RX may be variously set according to the size and shape of the touch panel 500. Hereinafter, the touch panel 500 including three driving electrodes TX1 to TX3 and eight receiving electrodes RX1 to RX8 as shown in FIG. 4 will be described as an example. do.

In addition, at least two sub-receiving electrodes may be formed between each of the two sub-driving electrodes forming one driving electrode, the sub-receiving electrodes being electrically insulated from each other. Hereinafter, the touch panel 500 will be described with reference to FIG. 4, in which two sub-receiving electrodes are formed between two sub-driving electrodes.

First, each of the driving electrodes TX1 to TX3 formed in the first direction of the panel 100 is composed of sub-driving electrodes connected to one driving electrode wiring line TL.

For example, the first driving electrode TX1 is composed of five sub-driving electrodes t11 to to15 connected through the first driving electrode wiring TL1, and the second driving electrode TX2 is composed of the second driving electrode TX1, And five sub-driving electrodes t21 to t25 connected through the driving electrode wiring TL2 and the third driving electrode TX3 is composed of five sub-driving electrodes connected through the third driving electrode wiring TL3 And drive electrodes t31 to t35.

The first driving electrode wiring TL1, the second driving electrode wiring TL2 and the third driving electrode wiring TL3 are connected to the touch sensing unit 600, and in particular, the touch sensing unit The touch driver 610 is connected to the touch driver 610.

Second, each of the receiving electrodes RX1 to RX8 formed in a second direction perpendicular to the first direction is composed of sub-receiving electrodes connected to one receiving electrode line RL.

For example, the first receiving electrode RX1 is composed of three sub-receiving electrodes r11, r31 and r51 connected through a first receiving electrode line RL1, and the second receiving electrode RX2 is composed of three sub- And the seventh receiving electrode RX7 is connected through the seventh receiving electrode wiring RL7 to the third receiving electrode RL2 via three receiving electrodes r21, r41 and r61 connected via the second receiving electrode wiring RL2, And the eighth receiving electrode RX8 is composed of three sub receiving electrodes r24, r44 and r54 connected through the eighth receiving electrode wiring RL8. r64).

Third, two sub-receiving electrodes are formed between the two sub-driving electrodes forming one driving electrode TX to form a receiving electrode RX electrically insulated from each other.

For example, between the first sub-driving electrode t11 and the second sub-driving electrode t12 of the sub-driving electrodes t11, t12, t13, t14 and t15 forming the first driving electrode TX1, A first sub reception electrode r11 which is one of the sub reception electrodes forming the first reception electrode RX1 and a second reception electrode R11 which is one of sub reception electrodes forming the second reception electrode RX2, 2-1 sub-receiving electrodes r21 are formed.

Fourth, the sub-receiving electrodes formed between two sub-driving electrodes are formed in a line along the second direction.

For example, between the first sub-driving electrode t11 and the second sub-driving electrode t12 of the sub-driving electrodes t11, t12, t13, t14 and t15 forming the first driving electrode TX1, A first sub reception electrode r11 which is one of the sub reception electrodes forming the first reception electrode RX1 and a second reception electrode R11 which is one of sub reception electrodes forming the second reception electrode RX2, 2-1 sub-receiving electrodes r21 are formed, and the 1-1th sub-receiving electrode r11 and the 2-1th receiving electrodes r21 are formed in a line along the second direction.

For example, sub-receiving electrodes forming two receiving electrodes are alternately arranged along the second direction. In addition, the reception electrode lines disposed between the adjacent sub-driving electrodes are arranged to overlap with the sub-reception electrodes alternately arranged in the second direction.

In addition, since two receiving electrodes are formed for the one driving electrode, a mutual capacitance is formed.

In addition, between the first sub-driving electrode t21 and the second sub-driving electrode t22 of the sub-driving electrodes t21, t22, t23, t24 and t25 forming the second driving electrode TX2, The first and second receiving electrodes R31 and RX2 form one of the sub receiving electrodes forming the first receiving electrode RX1 and the second receiving electrode RX2, Two sub receiving electrodes r41 are formed. The 1-2 sub-receiving electrode r31 and the 2-2 sub-receiving electrode r41 are formed in a line along the second direction.

In this case, the 1-1th sub-receiving electrode r11 and the 1-2th sub-receiving electrode r31 are connected to the 1-3th receiving electrode r51 via the first receiving electrode wiring RL1, Thereby forming the first receiving electrode RX1. The 2-1th sub-receiving electrode r21 and the 2-2th sub-receiving electrode r41 are connected to the 2-3th sub-receiving electrode r61 via the second receiving electrode line RL2 Thereby forming the second receiving electrode RX2. That is, the sub-receiving electrodes forming one of the sub-receiving electrodes r11, r21, r31, r41, r51, and r61 formed in a row along the second direction are connected to one receiving electrode wiring .

The first receiving electrode line RL1, the second receiving electrode line RL2 and the other receiving electrode lines RL3 to RL8 are connected to the touch sensing unit 600, And the touch input unit 620 constituting the touch panel unit 600.

Fifth, when the touch driving signal is supplied to the n < th > driving electrode among the driving electrodes, the touch sensing unit 600 uses the position information in the first direction of the receiving electrode, And calculates a first coordinate value corresponding to the first direction. The touch sensing unit 600 may include the n-th driving electrode among the sub-receiving electrodes constituting the receiving electrode on which the position information in the second direction and the sensing signal corresponding to the touch are received, The second coordinate value corresponding to the second direction is calculated using the position information in the second direction of the mth sub-receiving electrode formed between the sub-driving electrodes. The touch sensing unit 600 is configured to determine a position where a touch is generated by using the first coordinate value and the second coordinate value.

For example, each of the sub-receiving electrodes shown in FIG. 4 has a first coordinate value (X axis, i.e., a coordinate value in the horizontal axis direction in FIG. 4) and a second coordinate value (Y axis, (Coordinate values in the direction of the vertical axis)) can be represented by one coordinate (X, Y). That is, the coordinate of r11 is (1,1), the coordinate of r21 is (1,2), the coordinate of r61 is (1,6), the coordinate of r14 is (4,1) (4,2), and the coordinate of r64 is (4,6). The numbers representing the sub-receiving electrodes r11 to r64 shown in Fig. 4 are described in the order of the Y-axis direction and the order of the X-axis direction. Therefore, the first digit of each of the numbers representing the sub reception electrodes corresponds to the Y coordinate value of the coordinates (X, Y), and the back digit corresponds to the X coordinate value. That is, the coordinates (X, Y) of the sub-receiving electrodes indicated by r64 are (4, 6), while the sub-receiving electrodes are indicated by r64.

In this case, a total of 24 coordinates can be set. Hereinafter, a method of calculating the coordinates (1,1) corresponding to r11 among the sub-receiving electrodes by the touch sensing unit 600 will be described as an example of the present invention.

For example, when the touch driving signal is supplied to the first driving electrode TX, the sensing signal corresponding to the touch is received from the first receiving electrode RX1, The first coordinate is calculated using the position information indicating that the first receiving electrode RX1 is formed at the first position from the left end of the first direction. That is, the first coordinate value is '1'.

In addition, the touch sensing unit 600 includes the first receiving electrode RX1, which receives the position information of the first driving electrode TX1 in the second direction and the sensing signal corresponding to the touch, The position information in the second direction of the 1-1 sub receiving electrode r11 formed between the sub driving electrodes t11 and t12 constituting the first driving electrode TX1 among the sub receiving electrodes To calculate a second coordinate value corresponding to the second direction.

The sensing signal is received when the touch driving signal is supplied to the first driving electrode TX1 so that the first driving electrode TX1 is electrically connected to the touch panel 500 are formed on the first line in the second direction. Also, the touch sensing unit 600 is located at an upper position than the 2-1th receiving electrode r21 when the 1-1th sub-receiving electrode r11 is based on the second direction Can be determined. Therefore, the touch sensing unit 600 can determine that the touch position is the first line in the second direction, and in particular, the upper direction among the first lines. Accordingly, the second coordinate value becomes '1'.

The touch sensing unit 600 can determine the position where the touch is generated by using the first coordinate and the second coordinate. In the above example, the touch sensing unit 600 can recognize that the touch is made at the first position with respect to the first direction and at the first position with respect to the second direction. Accordingly, the touch sensing unit 600 can recognize that a touch is generated at coordinates (1,1) out of a total of 24 positions formed on the touch panel 500.

The touch sensing unit 600 may include the touch driver 610 and the touch receiving unit 620 as described above.

The touch driver 610 sequentially supplies the touch driving signals to the driving electrodes, and the touch receiving unit 620 receives the sensing signals from the receiving electrodes.

In this case, the touch position determination process as described above may be performed in the touch receiving unit 620 or may be performed in another component of the touch sensing unit 600.

5 is a diagram schematically illustrating a configuration of a touch panel applied to a display device according to a second embodiment of the present invention.

The touch panel 500 includes a plurality of driving electrodes TX formed in a first direction of the panel 100 and a plurality of receiving electrodes RX formed in a second direction perpendicular to the first direction, . The number of the driving electrodes TX and the number of the receiving electrodes RX may be variously set according to the size and shape of the touch panel 500.

The touch panel 500 according to the first embodiment is composed of three driving electrodes TX1 to TX3 and eight receiving electrodes RX1 to RX8 as shown in FIG. However, as shown in FIG. 5, the touch panel 500 applied to the second embodiment is composed of two driving electrodes TX1 and TX2 and twelve receiving electrodes RX1 to RX12.

In addition, in the touch panel 500 according to the first embodiment, as shown in FIG. 4, electrically insulated receiving electrodes are formed between two sub-driving electrodes forming one driving electrode Two sub receiving electrodes are formed. However, in the touch panel 500 according to the second embodiment, as shown in FIG. 5, electrically insulated receiving electrodes are formed between two sub-driving electrodes forming one driving electrode Three sub receiving electrodes are formed.

That is, the touch panel 500 applied to the second embodiment is different from the touch panel applied to the first embodiment in that the sub-driver electrodes formed between two sub-drive electrodes forming one drive electrode Except that the number of the receiving electrodes is one more and the number of the driving electrodes is one less than that of the touch panel according to the first embodiment.

As the number of driving electrodes formed on the touch panel 500 is reduced and the number of sub receiving electrodes formed between two sub driving electrodes is increased, the driving speed of the touch panel may be increased.

For example, in order to determine whether the touch panel is touched with respect to 24 coordinates using the conventional touch panel as shown in FIG. 2, six touch driving signals are sequentially applied to six driving electrodes TX1 to TX6 Should be supplied.

However, in order to determine whether the touch panel is applied to the 24 coordinates using the touch panel applied to the first embodiment of the present invention as shown in FIG. 4, three touch driving signals are sequentially applied to the three driving electrodes (TX1 to TX3). That is, in the first embodiment of the present invention, it is determined whether or not touches of the same number of coordinates as the number formed on the conventional touch panel, using touch drive signals less than the number of conventional touch drive signals, can do. Therefore, the driving time for driving the touch panel 500 can be reduced as compared with the related art.

5, in order to determine whether or not to touch the 24 coordinates using the touch panel applied to the second embodiment of the present invention, a total of two touch driving signals are sequentially applied to two driving electrodes TX1 to TX2). That is, in the second embodiment of the present invention, it is determined whether or not touches are performed on the same number of coordinates as the number formed on the conventional touch panel, by using the touch driving signals less than the number of the conventional touch driving signals can do. Therefore, the driving time for driving the touch panel 500 can be reduced as compared with the related art.

More specifically, in the first embodiment or the second embodiment of the present invention, when a touch driving signal is supplied to one driving electrode, touches are simultaneously performed at two different positions or three positions along the second direction Can be judged. Therefore, it is possible to determine whether or not the touch panel 500 has been touched by using a smaller number of touch driving signals than in the prior art. Accordingly, in the display device to which the present invention is applied, the time for supplying the touch driving signals to the touch panel 500 can be reduced.

However, since the time for supplying the touch driving signal to one driving electrode is not reduced, the touch sensitivity for each of the driving electrodes is not reduced.

On the other hand, the total time for supplying the touch driving signals to all the driving electrodes may be reduced. Therefore, the time for supplying the touch driving signal to each of the driving electrodes can be increased by a time corresponding to the decreasing time, thereby improving the touch sensitivity. In other words, the cumulative time required to drive all the driving electrodes of the touch panel 500 can be reduced by the first and second embodiments of the present invention. On the other hand, in the first embodiment and the second embodiment, the cumulative time can be increased to improve the touch sensitivity. Each time for driving each driving electrode to increase the cumulative time can be increased. Therefore, the respective driving electrodes can be supplied with the touch driving signal for a longer time. When the cumulative time of the first embodiment and the second embodiment is equal to the cumulative time of the conventional touch panel shown in Fig. 2, better touch sensitivity can be achieved.

FIG. 6 is a plan view of a panel according to an embodiment of the present invention. FIG. 6 is a plan view of a touch panel applied to the first embodiment of the present invention.

As described above, the touch panel 500 applied to the present invention can be manufactured separately from the panel 100, and then attached to the panel 100. The touch panel may be incorporated in the panel 100 as described in the first and second embodiments.

A top view of one embodiment of the panel 100 with the touch panel 500 incorporated therein is shown in FIG. Particularly, Fig. 6 shows a part of the panel 100 applied to the first embodiment of the present invention.

The touch panel 500 according to the first embodiment of the present invention is composed of three driving electrodes TX1 to TX3 and eight receiving electrodes RX1 to RX8, Two sub-receiving electrodes are formed in between. Figure 6 shows a portion of the panel 100 shown in Figure 4.

In the panel 100, a pixel P is formed in an area where data lines and gate lines cross each other.

Each of the sub driving electrodes t11 to t35 and the sub receiving electrodes r11 to r64 is formed in an area corresponding to at least one or more pixels.

For example, as shown in FIG. 6, one sub-driving electrode is formed in an area corresponding to sixteen pixels (P), and one sub-receiving electrode is formed in six pixels (P) And is formed in the corresponding region.

The five sub-driving electrodes forming one driving electrode may be connected through one driving electrode wiring TL1, TL2 and TL3 as shown in Fig. 4, And may be connected through two subordinate driving electrode wirings branched from the driving electrode wirings TL1, TL2 and TL3.

For example, in FIG. 6, a first driving electrode line TL1 constituted by one line is formed in a non-display area of the panel 100, and in the display area of the panel 100, Two subordinate driving electrode wirings TL1a and TL1b branched from the wiring TL1 are formed. The five sub-driving electrodes t11, t12, t13, t14 and t15 forming the first driving electrode TX1 are electrically connected to each other through the two subordinate driving electrode lines TL1a and TL1b have.

The first sub drive electrode t11 is connected to at least one contact hole C and the second sub drive electrode line TL1b connected to the first sub drive electrode line TL1a, A contact hole C is formed. In the panel shown in Fig. 6, the first sub-driving electrode t11 is connected to the first slave driving electrode wiring TL1a via the four contact holes C, and four other contact holes C And is connected to the second slave driving electrode wiring TL1b through the second slave driving electrode wiring TL1b. In Fig. 6, a region represented by a dot is a contact hole C.

And the driving electrode wiring or the slave driving electrode wiring is formed along the first direction in the display region.

When the gate line is formed along the first direction, the driving electrode wiring or the slave driving electrode wiring may be formed in parallel with the gate line. In this case, the driving electrode wiring or the slave driving electrode wiring may be formed in the same layer as one gate line.

The three sub-reception electrodes forming one reception electrode may be connected through one reception electrode wiring as shown in Figs. 4 and 6, but two or more sub-reception electrodes branched from one reception electrode wiring, And may be connected through wirings.

For example, in FIG. 4, a first receiving electrode line RL1 formed by one line is formed in the non-display region of the panel 100, and three sub-electrodes forming the first receiving electrode RX1 The receiving electrodes r11, r31 and r51 are electrically connected to each other through the receiving electrode wiring RL1.

In this case, at least one contact hole C connected to the reception electrode wiring RL1 is formed in the first sub reception electrode r11. In the panel shown in Fig. 6, the first sub-reception electrode r11 is connected to the first reception electrode line RL1 through one contact hole C. In Fig. 6, a region represented by a dot is a contact hole C.

The receiving electrode wiring is formed along the second direction.

When the data lines are formed along the second direction, the reception electrode lines may be formed in parallel with the data lines. As another example, the receiving electrode wiring may be formed so as to overlap the data line with the data line and the insulating film interposed therebetween.

FIG. 7 is a diagram illustrating a configuration of a touch panel and a touch sensing unit applied to a display device according to a third embodiment of the present invention. The display device according to the third embodiment of the present invention is similar to the display device according to the first and second embodiments of the present invention. Therefore, in the following description, the same or similar contents as those described with reference to Figs. 3, 4 and 6 are omitted or briefly described. In particular, the structures of the touch panel 500 and the touch sensing unit 600 will be described below.

The configuration of the touch panel 500 applied to the third embodiment of the present invention is as follows.

The touch panel 500 includes a plurality of driving electrodes TX formed in a first direction of the panel 100 and a plurality of reception electrodes RX formed in a second direction crossing the first direction. . The number of the driving electrodes TX and the number of the receiving electrodes RX may be an even number and may be variously set according to the size and shape of the touch panel 500. [ Hereinafter, the touch panel 500 having three driving electrodes TX1 to TX3 and eight receiving electrodes RX1 to RX8 as shown in FIG. 7 will be described as an example. do.

In addition, two sub-receiving electrodes are formed between each of the two sub-driving electrodes forming one driving electrode, each sub-receiving electrode forming a pair of receiving electrodes electrically insulated from each other. Hereinafter, the touch panel 500 will be described with reference to FIG. 7, in which two sub-receiving electrodes are formed between two sub-driving electrodes.

First, each of the driving electrodes TX1 to TX3 formed in the first direction of the panel 100 is composed of sub-driving electrodes connected to one driving electrode wiring line TL.

For example, the first driving electrode TX1 is composed of five sub-driving electrodes t11 to t15 connected through the first driving electrode wiring TL1, and the second driving electrode TX2 is composed of the second driving electrode TX1, And five sub-driving electrodes t21 to t25 connected through the driving electrode wiring TL2 and the third driving electrode TX3 is composed of five sub-driving electrodes connected through the third driving electrode wiring TL3 And driving electrodes t31 to t35.

The first driving electrode wiring TL1, the second driving electrode wiring TL2 and the third driving electrode wiring TL3 are connected to the touch sensing unit 600, and in particular, the touch sensing unit The touch driver 610 is connected to the touch driver 610.

Second, each of the receiving electrodes RX1 to RX8 formed in a second direction intersecting with the first direction is composed of sub-receiving electrodes connected to one receiving electrode line RL.

For example, the first receiving electrode RX1 is composed of three sub receiving electrodes r11, r31 and r51 connected through a first receiving electrode line RL1. The second receiving electrode RX2 is composed of three sub receiving electrodes r21, r41 and r61 connected through a second receiving electrode line RL2. The seventh receiving electrode RX7 is composed of three sub receiving electrodes r14, r34 and r54 connected through a seventh receiving electrode line RL7. The eighth receiving electrode RX8 is composed of three sub receiving electrodes r24, r44 and r64 connected to the eighth receiving electrode line RL8.

Third, two sub-driving electrodes are formed to form a pair of receiving electrodes RX electrically insulated from each other between two sub-driving electrodes forming one driving electrode TX.

For example, between the first sub-driving electrode t11 and the second sub-driving electrode t12 of the sub-driving electrodes t11, t12, t13, t14 and t15 forming the first driving electrode TX1, A first sub reception electrode r11 which is one of the sub reception electrodes forming the first reception electrode RX1 and a second reception electrode R11 which is one of sub reception electrodes forming the second reception electrode RX2, 2-1 sub-receiving electrodes r21 are formed.

Fourth, the sub-receiving electrodes formed between two sub-driving electrodes are formed in a line along the second direction.

For example, between the first sub-driving electrode t11 and the second sub-driving electrode t12 of the sub-driving electrodes t11, t12, t13, t14 and t15 forming the first driving electrode TX1, A first sub reception electrode r11 which is one of the sub reception electrodes forming the first reception electrode RX1 and a second reception electrode R11 which is one of sub reception electrodes forming the second reception electrode RX2, 2-1 sub-receiving electrodes r21 are formed. The 1-1th sub-receiving electrode r11 and the 2-1th receiving electrode r21 are formed in a line along the second direction.

In addition, between the first sub-driving electrode t21 and the second sub-driving electrode t22 of the sub-driving electrodes t21, t22, t23, t24 and t25 forming the second driving electrode TX2, The first and second receiving electrodes R31 and RX2 form one of the sub receiving electrodes forming the first receiving electrode RX1 and the second receiving electrode RX2, Two sub receiving electrodes r41 are formed. The 1-2 sub-receiving electrode r31 and the 2-2 sub-receiving electrode r41 are formed in a line along the second direction.

In this case, the 1-1th sub-receiving electrode r11 and the 1-2th sub-receiving electrode r31 are connected to the 1-3th receiving electrode r51 via the first receiving electrode wiring RL1, Thereby forming the first receiving electrode RX1. The 2-1th sub-receiving electrode r21 and the 2-2th sub-receiving electrode r41 are connected to the 2-3th sub-receiving electrode r61 via the second receiving electrode line RL2 Thereby forming the second receiving electrode RX2. That is, the sub-receiving electrodes forming one of the sub-receiving electrodes r11, r21, r31, r41, r51, and r61 formed in a row along the second direction are connected to one receiving electrode wiring .

The first receiving electrode line RL1, the second receiving electrode line RL2 and other receiving electrode lines RL3 to RL8 are connected to the touch sensing unit 600, And the touch input unit 620 constituting the touch panel unit 600.

As described above, two sub-receiving electrodes may be formed to form a pair of receiving electrodes electrically insulated from each other between two sub-driving electrodes forming one driving electrode. &Quot; two sub-receiving electrodes formed between two sub-driving electrodes " may mean " two sub-receiving electrodes formed between adjacent sub-driving electrodes ".

The configuration of the touch sensing unit 600 applied to the third embodiment of the present invention is as follows.

The touch sensing unit 600 senses whether the touch panel 500 is touched or touched by using a pair of sensing signals received from the pair of receiving electrodes. That is, when a touch driving signal for touch detection is sequentially supplied to the driving electrodes, if a user touches a specific area of the touch panel 500 with a finger or a pen, The capacitance between the receiving electrodes changes and the change in the capacitance changes the magnitude of the sensing signal transmitted from the receiving electrode to the touch sensing unit 600.

The pair of receiving electrodes are connected to the touch sensing unit 600 through the receiving electrode lines RL1 to RLs. The driving electrodes are connected to the touch sensing unit 600 through driving electrode lines TL1 to TLk. As described above, the touch sensing unit 600 determines whether or not the panel 100 is touched by using a pair of sensing signals received from the pair of receiving electrodes.

Particularly, the touch sensing unit 600 sequentially supplies the touch driving signals to the driving electrodes formed in the first direction of the panel 100. When the touch driving signal is supplied to the n < th > driving electrode of the driving electrodes, the touch sensing unit 600 may include a pair of receiving electrodes formed between the sub- Lt; RTI ID = 0.0 > a < / RTI > In this case, the pair of reception electrodes are connected to differential amplifiers (Damp), and the differential amplifier (Damp) differentiates the pair of sensing signals. The touch sensing unit 600 determines whether at least two positions formed between the sub-driving electrodes and formed in a second direction intersecting the first direction are touched. In this case, the common noise applied to the pair of receiving electrodes can be reduced.

For this, the touch sensing unit 600 may include a touch driver for sequentially supplying the touch driving signal to the driving electrodes between the touch sensors, And a touch receiver for determining whether the touch panel 500 is touched or touched by using differential amplifiers for differential processing the sensing signals of the touch panel 500 and differential sensing signals output from the differential amplifiers. The differential amplifier may also be referred to as a differential amplifier.

The configuration and functions of the touch panel 500 and the touch sensing unit 600 according to the third embodiment of the present invention will be described below in detail with reference to FIGS. 7, 8A, and 8B.

8A and 8B are schematic views illustrating a configuration of a touch sensing unit applied to a display device according to a third embodiment of the present invention. In the following description, the same or similar contents as those described with reference to Figs. 3 to 7 are omitted or briefly described.

The touch receiving unit 620 constituting the touch sensing unit 600 includes four differential amplifiers Damp1 to Damp4 connected to eight receiving electrodes RX1 to RX8. When the touch sensing signal is supplied to the n-th driving electrode among the driving electrodes, the touch sensing unit 600 senses the differential sensing signal, which is determined to have generated a touch, The first coordinate corresponding to the first direction is calculated using the position information in the first direction. The touch sensing unit 600 includes the n-th driving electrode of the n-th driving electrode and the n-th driving electrode of the sub-receiving electrodes constituting the receiving electrode receiving the differential signal The second coordinates corresponding to the second direction are calculated using the position information in the second direction of the mth sub-receiving electrode formed between the sub-driving electrodes. The touch sensing unit 600 can determine the position where the touch is generated by using the first coordinate and the second coordinate.

For example, each of the sub-reception electrodes shown in FIG. 7 has a first coordinate value (X axis, i.e., a coordinate value in the horizontal axis direction in FIG. 7) and a second coordinate value (Y axis, (Coordinate values in the vertical axis direction) of the coordinates (X, Y). That is, the coordinate of r11 is (1,1), the coordinate of r21 is (1,2), the coordinate of r61 is (1,6), the coordinate of r14 is (4,1) (4,2), and the coordinate of r64 is (4,6). The numbers of the sub-receiving electrodes shown in FIG. 7, that is, the numbers representing t11 to t35 and r11 to r64 are described in the Y-axis direction and the X-axis direction. Therefore, the first digit of each of the numbers representing the sub reception electrodes corresponds to the Y coordinate value of the coordinates (X, Y), and the back digit corresponds to the X coordinate value. That is, the coordinates (X, Y) of the sub-receiving electrodes indicated by r64 are (4, 6), while the sub-receiving electrodes are indicated by r64.

In this case, a total of 24 coordinates can be set. Hereinafter, the present invention will be described by way of an example of a method in which the touch sensing unit 600 calculates coordinates (1,1) corresponding to r11 among the sub-receiving electrodes.

For example, when the touch driving signal is supplied to the first driving electrode TX, the sensing signal transmitted from the first receiving electrode RX1 is received at the (+) input terminal of the first differential amplifier Damp1 And the sensing signal transmitted from the second receiving electrode RX2 is received at the negative input terminal of the first differential amplifier Damp1. The touch sensing unit 600 may use position information indicating that the first receiving electrode RX1 and the second receiving electrode RX2 are formed at the first position from the left end of the first direction, The first coordinate is calculated. That is, the first coordinate is '1'.

In addition, the touch sensing unit 600 may receive the position information of the first driving electrode TX1 in the second direction and the sub-receiving electrodes RX1 and RX2 of the first receiving electrode RX1, The first sub-receiving electrode r11 formed between the sub-driving electrodes t11 and t12 constituting the first driving electrode TX1 in the second direction, And calculates second coordinates corresponding to the two directions.

A case where the user's finger touches the 1-1th sub-receiving electrode r11 and the 2-1th sub-receiving electrode r21 are compared will be described as an example to calculate the second coordinate value.

For example, when the finger touches the 1-1th sub-receiving electrode r11, part of the mutual cap of the 1-1th sub-receiving electrode r11 moves through the finger, so that when the intensity of the sensing signal is not touching All lower.

On the other hand, since the 2 < -1 > sub receiving electrode r21 has no touch, the intensity of the sensing signal transmitted from the 2 < nd > -1 sub receiving electrode corresponds to the fundamental intensity not judged to be a touch.

At this time, the touch sensing unit 600 senses the sensing signal transmitted from the 1-1th sub-receiving electrode r11 to the information input to the (+) input terminal of the first differential amplifier (Damp1) -1 The receiving signal transmitted from the sub-receiving electrode r21 has information input to the negative input terminal of the first differential amplifier Damp1.

The first differential amplifier (Damp1) outputs the intensity difference of the sense signals transmitted from the first receiving electrode (RX1) and the second receiving electrode (RX2). At this time, the output of the first differential amplifier (Damp1) outputs a negative voltage lower than 0V. Accordingly, the touch sensing unit 600 determines that the first 1-1 sub receiving electrode r11 has a touch based on the polarity of the voltage.

In summary, the touch sensing unit analyzes the output voltage of the differential amplifier, that is, the polarity and the voltage intensity of the differentiated signal, and determines the receiving electrode on which the sensing signal corresponding to the touch is received.

The sensing signal is received when the touch driving signal is supplied to the first driving electrode TX1 so that the first driving electrode TX1 is electrically connected to the touch panel 500 are formed on the first line in the second direction. Also, the touch sensing unit 600 is located at an upper position than the 2-1th receiving electrode r21 when the 1-1th sub-receiving electrode r11 is based on the second direction I know. Therefore, the touch sensing unit 600 can determine that the touch position is the first line in the second direction, and in particular, the upper direction among the first lines. Therefore, the second coordinate is '1'.

The touch sensing unit 600 can determine the position where the touch is generated by using the first coordinate and the second coordinate. In the above example, the touch sensing unit 600 can recognize that the touch is made at the first position with respect to the first direction and at the first position with respect to the second direction. Accordingly, the touch sensing unit 600 can recognize that the touch is generated at the coordinates (1,1) among the total 24 positions formed on the touch panel 500. [

For example, when the finger touches the 2-1 sub-receiving electrode r21, the part of the mutual cap of the 2-1th sub-receiving electrode r21 moves through the finger, so that the signal intensity of the sensing signal is lowered.

On the other hand, since the 1-1th sub-receiving electrode r11 has no touch, the intensity of the sensing signal transmitted from the 1-1th sub-receiving electrode corresponds to the fundamental intensity at which the touch is not judged to have occurred.

At this time, the touch sensing unit 600 senses that the sensing signal transmitted from the 2-1 th receiving electrode r21 is connected to the (-) input terminal of the first differential amplifier Damp1, And the information that the sensing signal transmitted from the sub receiving electrode r11 is connected to the (+) input terminal of the first differential amplifier (Damp1).

The first differential amplifier (Damp1) outputs the intensity difference of the sense signals transmitted from the first receiving electrode (RX1) and the second receiving electrode (RX2). At this time, the output of the first differential amplifier (Damp1) is a positive voltage higher than 0V. Accordingly, the touch sensing unit 600 determines that there is a touch on the (2-1) th sub-receiving electrode r21 based on the polarity of the voltage.

The sensing signal is received when the touch driving signal is supplied to the first driving electrode TX1 so that the first driving electrode TX1 is electrically connected to the touch panel 500 are formed on the first line in the second direction.

Also, the touch sensing unit 600 is positioned at a lower level than the first-first sub-receiving electrode r11 when the second-first-sub receiving electrode r21 is in the second direction I know. Accordingly, the touch sensing unit 600 can determine that the position where the touch is currently performed is the first line in the second direction, specifically, the bottom direction of the first line. Accordingly, the second coordinate becomes '2'.

In particular, the pair of sense signals input to the first differential amplifier (Damp1) may include a common noise. As shown in Figs. 8A and 8B, the touch sensitivity may be lowered by the common noise. However, according to the output signal of the first differential amplifier (Damp1), the common noise is reduced or canceled and the touch sensitivity is improved.

The touch sensing unit 600 includes the touch sensing unit 620 including the touch driver 610 and the differential amplifiers Damp1 to Damp4 as described above, .

The touch driver 610 sequentially supplies the touch driving signals to the driving electrodes, and the touch receiving unit 620 receives the sensing signals from the receiving electrodes.

In this case, the touch position determination process as described above may be performed in the touch receiving unit 620 or may be performed in another component of the touch sensing unit 600.

9 is a diagram illustrating the configuration of a touch panel and a touch sensing unit applied to a display device according to a fourth embodiment of the present invention. The touch panel 500 includes a plurality of driving electrodes TX formed in a first direction of the panel 100 and a plurality of reception electrodes RX formed in a second direction crossing the first direction. . The number of the driving electrodes TX and the number of the receiving electrodes RX may be variously set according to the size and shape of the touch panel 500. In the following description, the same or similar contents as those described with reference to Figs. 3 to 8 are omitted or briefly described.

The touch panel 500 applied to the fourth embodiment is composed of three driving electrodes TX1 to TX3 and eight receiving electrodes RX1 to RX8 in the same manner as the third embodiment shown in Fig. . However, in the touch panel 500 according to the fourth embodiment, as shown in FIG. 9, the structures of the sub-receiving electrodes of the eight receiving electrodes RX1 to RX8 are modified. The difference of the fourth embodiment is that one sub-receiving electrode formed between two sub-driving electrodes forming one driving electrode extends in the second direction and the other two sub-driving electrodes As shown in FIG.

For example, the extended second-first sub-receiving electrode r21 is formed so as to correspond to the sub-driving electrodes t11, t21, t21 and t22 of the two driving electrodes TX1 to TX2 at the same time. However, since the touch driving signal is sequentially applied to each driving electrode, the operation of the fourth embodiment is substantially the same as that of the third embodiment.

In other words, when a touch driving signal is applied to the first driving electrode TX1, a sensing signal is generated by the first sub driving electrode t11 in the extended second-first sub receiving electrode r21. However, since no touch driving signal is applied to the second driving electrode TX2, there is no sensing signal generated by the second driving electrode TX2.

In the opposite case, if a touch driving signal is applied to the second driving electrode TX2, a sensing signal is generated by the second sub-driving electrode t21 in the extended second-first sub-receiving electrode r21 do. However, since no touch driving signal is applied to the first driving electrode TX1, there is no sensing signal generated by the first driving electrode TX1.

In summary, the extended sub-receiving electrode outputs a sensing signal in accordance with the touch driving signal supplied to one of the two driving electrodes adjacent in the second direction.

In the fourth embodiment, the area of the sub receiving electrode formed on the touch panel 500 in the second direction is larger than the area of the sub receiving electrode formed on the touch panel 500 in the second direction in the third embodiment Lt; / RTI > Accordingly, in the fourth embodiment, a similar common noise can be received at each sub receiving electrode. Referring to FIGS. 8A and 8B again, as the common noises applied to the pair of mutually electrically isolated receiving electrodes are similar to each other, the effect of reducing the common noise in the differential amplifier can be further increased.

In order to determine whether the touch panel is touched with respect to 24 coordinates using the conventional touch panel as shown in FIG. 2, six touch driving signals are sequentially applied to six driving electrodes (TX1 to TX6).

However, in order to determine whether or not to touch the 24 coordinates using the touch panel applied to the third embodiment of the present invention as shown in FIG. 7, three touch driving signals are sequentially applied to the three driving electrodes (TX1 to TX3). That is, in the third embodiment of the present invention, it is judged whether or not touches are performed on the same number of coordinates as the number formed on the conventional touch panel, by using the touch driving signals which are three smaller than the number of the conventional touch driving signals And the common noise can be reduced. Therefore, the driving time for driving the touch panel 500 can be reduced as compared with the related art, and the touch sensitivity can also be improved.

In other words, in the third or fourth embodiment of the present invention, when a touch driving signal is supplied to one driving electrode, touches are simultaneously performed at two positions electrically insulated from each other along the second direction Can be determined. Therefore, it is possible to determine whether or not the touch panel 500 has been touched by using a smaller number of touch driving signals than in the prior art. Accordingly, in the display device to which the present invention is applied, the time for supplying the touch driving signals to the touch panel 500 can be reduced.

However, since the time for supplying the touch driving signal to one driving electrode is not reduced, the touch sensitivity for each of the driving electrodes is not reduced.

On the other hand, the time for supplying the touch-driving signals as a whole can be reduced. Therefore, the time for supplying the touch driving signal to each of the driving electrodes can be increased by a time corresponding to the decreasing time, thereby improving the touch sensitivity. In other words, the cumulative time required for driving all the driving electrodes of the touch panel 500 can be reduced by the third and fourth embodiments of the present invention.

In addition, by subjecting the sensing signals received through the pair of receiving electrodes electrically insulated from each other to differential processing, the common noise can be reduced, thereby further improving the touch sensitivity.

In addition, when the common noise is reduced by the differential amplifier, the touch sensitivity can be improved even when the intensity of the touch signal is reduced as the length of the receiving electrode wiring corresponding to the panel size is increased. That is, the differential amplifier can compensate for the reduction of the intensity of the touch signal or compensate for the common noise according to the increase of the length of the receiving electrode wiring corresponding to the panel size.

FIG. 10 is a plan view of a panel to be applied to a display device according to a third embodiment of the present invention. FIG. 10 is a plan view of a touch panel applied to a third embodiment of the present invention. In the following description, the same or similar contents as those described with reference to Figs. 3, 4, 6, 8 and 9 are omitted or briefly described.

As described above, the touch panel 500 applied to the present invention can be manufactured separately from the panel 100, and then attached to the panel 100. Also, the touch panel may be incorporated in the panel 100 as described in the third and fourth embodiments.

FIG. 10 is a plan view of an embodiment of the panel 100 in which the touch panel 500 is embedded. Particularly, Fig. 10 shows a part of the panel 100 applied to the third embodiment of the present invention shown in Fig. For simplicity of the drawing, some reference numerals are omitted in Fig.

The touch panel 500 according to the third embodiment of the present invention is composed of three driving electrodes TX1 to TX3 and eight receiving electrodes RX1 to RX8, Two sub-receiving electrodes are formed in between. FIG. 10 shows a portion of the panel 100 shown in FIG.

In the panel 100, a pixel P is formed in an area where data lines and gate lines cross each other.

Each of the sub driving electrodes t11 to t35 and the sub receiving electrodes r11 to r64 is formed in a region corresponding to at least one or more pixels.

For example, as shown in FIG. 10, one sub-driving electrode is formed in an area corresponding to sixteen pixels (P), and one sub-receiving electrode is formed in six pixels (P) And is formed in the corresponding region.

The five sub-driving electrodes forming one driving electrode may be connected through one driving electrode wiring TL1, TL2 and TL3 as shown in Fig. 7, And may be connected through two subordinate driving electrode wirings branched from the driving electrode wirings TL1, TL2 and TL3.

For example, in FIG. 10, a first driving electrode line TL1 constituted by one line is formed in a non-display area of the panel 100. In the display area of the panel 100, Two subordinate driving electrode wirings TL1a and TL1b branched from the wiring TL1 are formed. The five sub-driving electrodes t11, t12, t13, t14 and t15 forming the first driving electrode TX1 are electrically connected to each other through the two subordinate driving electrode lines TL1a and TL1b have.

The first sub drive electrode t11 is connected to at least one contact hole C and the second sub drive electrode line TL1b connected to the first sub drive electrode line TL1a, A contact hole C is formed. In the panel shown in FIG. 10, the first sub-driving electrode t11 is connected to the first subordinate driving electrode wiring TL1a through the four contact holes C, and the four subordinate driving electrodes t11, And is connected to the second slave driving electrode wiring TL1b through the second slave driving electrode wiring TL1b. In Fig. 10, a region represented by a dot is a contact hole C. In Fig.

And the driving electrode wiring or the slave driving electrode wiring is formed along the first direction in the display region.

When the gate line is formed along the first direction, the driving electrode wiring or the slave driving electrode wiring may be formed in parallel with the gate line. In this case, each of the driving electrode lines or the slave driving electrode lines may be formed in the same layer as one gate line.

The three sub-reception electrodes forming one reception electrode may be connected through one reception electrode wiring (RL1 to RL8) as shown in Figs. 7 and 10, but two Or may be connected via more than one slave receiving electrode wires.

For example, in FIG. 10, a first receiving electrode line RL1 formed in one line is formed in the non-display region of the panel 100. The three sub receiving electrodes r11, r31 and r51 forming the first receiving electrode RX1 are electrically connected to each other through the receiving electrode wiring RL1.

In this case, at least one contact hole C connected to the reception electrode wiring RL1 is formed in the first sub reception electrode r11. In the panel shown in Fig. 10, the first sub reception electrode r11 is connected to the reception electrode wiring RL1 through one contact hole C. In Fig. 10, a region represented by a dot is a contact hole C. In Fig.

The receiving electrode wiring is formed along the second direction.

When the data lines are formed along the second direction, the reception electrode lines may be formed in parallel with the data lines. As another example, the receiving electrode wiring may be formed so as to overlap the data line with the data line and the insulating film interposed therebetween.

The number of the contact holes C may vary depending on the area or size of the driving electrode and the receiving electrode.

11 is a view for explaining a method of manufacturing a panel applied to a display device according to the present invention. In particular, FIG. 11 is a cross-sectional view illustrating a method of manufacturing a panel in which a first sub- 1 < / RTI > pixel < RTI ID = 0.0 > P1. ≪ / RTI > 12 is a diagram illustrating another example of a method of manufacturing a panel applied to a display device according to the present invention. Specifically, a first sub-receiving electrode r21 constituting a second receiving electrode RX2 is formed And the second pixel P2 having the second pixel P2. 13 is an exemplary view showing a section cut along the line A-A 'shown in FIG.

A method of manufacturing a panel applied to a display device according to the present invention will be described with reference to FIGS. 11 to 13. FIG.

First, as shown in Figs. 11A and 12A, sub-driving electrodes t21, t22, t23, and t23 constituting the second driving electrode TX2 are formed on the base substrate 101, a second subsidiary driving electrode wiring TL2b, a gate line, and a gate electrode 102 for electrically connecting the first and second driver electrodes t24 and t25 are formed.

Next, a gate insulating film 104 as shown in FIG. 13 is deposited on top of the second slave driving electrode wiring TL2b, the gate line, and the gate electrode 102. Next, as shown in FIG.

Next, an active layer 105 is deposited on top of the gate electrode 102, as shown in Figs. 11 (b) and 12 (b).

Next, as shown in Figs. 11 (c), 12 (c) and 13, the data line 106 and the source / drain electrodes are deposited.

Next, as shown in Figs. 11 (d), 12 (d) and 13, a first protective film 107 is deposited. In this case, the first passivation layer 107 may have a thickness of 0.1 to 0.2 탆.

Next, as shown in FIG. 11 (e), FIG. 12 (e) and FIG. 13, an organic insulating film 108 is deposited on the top of the first protective film 107. In this case, the organic insulating layer 108 may be formed to a thickness of 0.1 to 2 탆.

Next, as shown in FIGS. 11 (f), 12 (f) and 13, a pixel electrode 109 is deposited on the top of the organic insulating film 108.

Next, as shown in FIG. 12 (g) and FIG. 13, the second receiving electrode wiring line RL2 is deposited on the top of the organic insulating film 108 so as to overlap with the data line 106. In this case, a separate component is not deposited on the first pixel P1.

Next, as shown in Figs. 11 (h), 12 (h) and 13, a second protective film 111 is deposited.

Finally, the sub-driving electrode and the sub-receiving electrode are deposited for each region, the sub-driving electrode is connected to the driving electrode wiring, and the sub-receiving electrode is connected to the receiving electrode wiring.

For example, as shown in (i) of FIG. 11, a first sub-driving electrode t21 constituting a second driving electrode TX2 is deposited on the first pixel P1, The driving electrode t21 is electrically connected to the second slave driving electrode line TL2b through the contact hole C. [

12 (i) and FIG. 13, a first sub-receiving electrode r21 constituting the second receiving electrode RX2 is deposited on the second pixel P2, 1 sub receiving electrode r21 is electrically connected to the second receiving electrode line RL2 through the contact hole C. [

In this case, as described above, the second receiving electrode line RL2 is formed so as to overlap the data line 110 formed on the panel with the second protective film 111 interposed therebetween .

A contact hole for connecting the first sub driving electrode t21 and the second slave driving electrode wiring TL2b and a contact hole for connecting the first sub receiving electrode r21 and the second receiving electrode wiring RL2, May be formed at various positions in addition to the positions as shown in Figs. 11 (i), 12 (i) and 13.

Hereinafter, with reference to Figs. 3 to 13, a method of driving a display device according to the present invention will be described. In particular, the present invention will be described below with reference to the first and third embodiments of the present invention.

The touch sensing unit 600 sequentially supplies touch driving signals to the driving electrodes TX1 to TX3 formed in the first direction of the panel 100. [

For example, when the touch sensing period comes, the touch sensing unit 600 supplies the touch driving signal to the first driving electrode TX1 and then the second driving electrode TX2, Supplies a touch driving signal to the third driving electrode TX3, and then supplies the touch driving signal to the third driving electrode TX3.

Next, when the touch driving signal is supplied to the n-th driving electrode among the driving electrodes, the touch sensing unit 600 generates at least two And receives sensing signals from the receiving electrodes.

For example, between the first sub-driving electrode t11 and the second sub-driving electrode t12 forming the first driving electrode TX1, a first sub-receiving electrode RX1 forming the first receiving electrode RX1, And a first sub receiving electrode r21 forming the electrode r11 and the second receiving electrode RX2 are formed.

In this case, when the touch driving signal is supplied to the first driving electrode TX1, the touch sensing unit 600 receives a sensing signal from each of the two sub-receiving electrodes r11 and r21.

Lastly, in the first embodiment of the present invention, the touch sensing unit 600 analyzes the sensing signals to generate at least two sub-driving electrodes in the second direction perpendicular to the first direction It is determined whether or not two positions are touched. Hereinafter, the present invention is described as an example in which a sensing signal corresponding to a touch is received from a first sub receiving electrode r11 forming the first receiving electrode RX1.

In the above example, the touch sensing unit 600 senses the first sub-receiving electrode r11 using the position information of the first sub receiving electrode r11 in the first direction, The first coordinate value corresponding to the first coordinate value is calculated. In this case, the touch sensing unit 600 knows that the first sub receiving electrode r11 is formed between the first sub driving electrode t11 and the second sub driving electrode t12. That is, the first sub reception electrode r11 is formed in the first line in the first direction. Accordingly, the touch sensing unit may set '1' as the value of the first coordinate (X).

In addition, the touch sensing unit 600 may include a plurality of sub-driving electrodes among the sub-driving electrodes constituting the first driving electrode, among the sub-receiving electrodes constituting the first receiving electrode RX1, The second coordinate corresponding to the second direction is calculated by using the position information of the first sub reception electrode r11 formed in the second direction in the second direction. In this case, in addition to the position information of the first sub receiving electrode r11, position information of the first driving electrode in the second direction is further used.

In this case, the touch sensing unit 600 knows that the first driving electrode is formed at the top of the panel with respect to the second direction. The touch sensing unit 600 may be configured such that the first sub receiving electrode r11 forming the first receiving electrode RX1 is connected to the first sub receiving electrode RX1 forming the second receiving electrode RX1 are formed on the upper side with respect to the second direction. That is, the first sub receiving electrode r11 is formed at a position corresponding to the first driving electrode TX1 formed at the top of the panel with respect to the second direction. The first sub receiving electrode r11 is formed at the upper end of the first sub receiving electrode r21 forming the second receiving electrode RX2 with respect to the first driving electrode TX1, . Accordingly, the touch sensing unit 600 may set '1' as the value of the second coordinate (Y).

The touch sensing unit 600 uses the first coordinate and the second coordinate to determine that the position where the touch is finally generated is the coordinate (1,1).

Also, in the third embodiment of the present invention, the touch sensing unit 600 differentiates the sensing signals using differential amplifiers. Next, the touch sensing unit 600 determines whether or not to touch at least two positions of the second direction intersecting the first direction, disposed between the sub-driving electrodes, And strength. Hereinafter, the present invention will be described as an example in which a non-processed sensing signal, which is determined to have generated a touch, is received from a first sub receiving electrode r11 forming the first receiving electrode RX1.

In the above example, the touch sensing unit 600 uses the position information in the first direction of the first sub receiving electrode r11 on which the differential signal is received, 1 < / RTI > In this case, the touch sensing unit 600 knows that the first sub receiving electrode r11 is formed between the first sub driving electrode t11 and the second sub driving electrode t12. That is, the first sub reception electrode r11 is formed in the first line in the first direction. Accordingly, the touch sensing unit may set '1' as the first coordinate value (X).

In addition, the touch sensing unit 600 may be configured to receive the position information of the first driving electrode in the second direction and the sub-receiving electrodes RX1 of the first receiving electrode RX1, The second coordinates corresponding to the second direction are obtained by using the position information in the second direction of the first sub reception electrode r11 formed between the sub drive electrodes constituting the first drive electrode, .

In this case, the touch sensing unit 600 knows that the first driving electrode is formed at the top of the panel with respect to the second direction. The touch sensing unit 600 may be configured such that the first sub receiving electrode r11 forming the first receiving electrode RX1 is connected to the first sub receiving electrode RX1 forming the second receiving electrode RX1 are formed on the upper side with respect to the second direction. That is, the first sub receiving electrode r11 is formed at a position corresponding to the first driving electrode TX1 formed at the top of the panel with respect to the second direction. The first sub receiving electrode r11 is formed on the upper side of the second sub receiving electrode r21 forming the second receiving electrode RX2 with respect to the first driving electrode TX1, . Accordingly, the touch sensing unit 600 may set '1' as the second coordinate value (Y).

The touch sensing unit 600 may determine that the position where the touch is generated finally is the coordinate (1,1) by using the first coordinate and the second coordinate.

The present invention includes a panel in which an image is displayed, a plurality of driving electrodes formed in a first direction of the panel, and a plurality of pair of receiving electrodes formed in a second direction crossing the first direction A plurality of sensing electrodes for sensing a touch panel and a plurality of sensing electrodes for sensing a touch on the touch panel by sequentially supplying a touch driving signal to the touch panel and the plurality of driving electrodes, And a touch sensing unit for determining the touch sensing unit. The touch sensing unit includes differential amplifiers. Each of the differential amplifiers is configured to be electrically connected to the pair of receiving electrodes to differentiate the pair of sensing signals. Each of the driving electrodes is composed of sub-driving electrodes connected to the driving electrode wiring. Each of the pair of reception electrodes is composed of sub-reception electrodes connected to the reception electrode wiring. And two sub-receiving electrodes forming a pair of receiving electrodes are disposed between two sub-driving electrodes forming one driving electrode.

Wherein the touch sensing unit comprises a pair of receiving electrodes including a receiving electrode receiving a sensing signal corresponding to a touch among the differential sensing signals when the touch driving signal is supplied to the n < th > driving electrode among the driving electrodes, The first coordinate corresponding to the first direction is calculated using the positional information in the first direction. The touch sensing unit may include a touch sensing unit for sensing position information of the nth driving electrode in the second direction and sub driving electrodes constituting the nth driving electrode among the sub receiving electrodes constituting the receiving electrode receiving the sensing signal The second coordinates corresponding to the second direction are calculated using the position information of the mth sub-receiving electrode formed in the second direction. The touch sensing unit may use the first coordinate and the second coordinate to determine a position at which the touch is generated.

One sub-receiving electrode of the two sub-receiving electrodes is formed between two sub-driving electrodes that extend in the second direction and constitute another driving electrode adjacent to the driving electrode.

According to another aspect of the present invention, there is provided a method of driving a plasma display panel, including the steps of sequentially supplying a touch driving signal to driving electrodes formed in a first direction of a panel, Receiving a pair of sensing signals from two receiving electrodes formed between sub-driving electrodes forming an electrode; The method of claim 1, further comprising the steps of differentiating the pair of received sensing signals, analyzing the differentiated sensed signals, determining, for each of the sub-driving electrodes, And determining whether or not the user touches the touch panel.

Wherein the step of receiving the sensing signals comprises the step of generating a plurality of sub-driving electrodes each formed between the two sub-driving electrodes forming the n < th > driving electrode, And receives a detection signal.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: panel 200: gate driver
300: Data driver 400: Timing controller
500: touch panel 600: touch sensing part

Claims (22)

A panel on which an image is displayed;
A touch panel including a plurality of driving electrodes and receiving electrodes; And
And a touch sensing unit configured to supply a touch driving signal to the plurality of driving electrodes and to determine whether or not to touch the panel through sensing signals received from the receiving electrodes,
Wherein each of the plurality of driving electrodes includes a sub-driving electrode arranged in a first direction of the panel and connected to the driving electrode wiring,
Wherein the receiving electrode includes a sub receiving electrode arranged in a second direction perpendicular to the first direction and connected to the receiving electrode wiring,
Wherein at least two sub-receiving electrodes constituting a receiving electrode electrically insulated from each other are formed between two sub-driving electrodes constituting one driving electrode. The method according to claim 1,
And at least two sub-receiving electrodes formed between the two sub-driving electrodes are arranged in a row along the second direction. 3. The method of claim 2,
And the sub reception electrodes constituting one reception electrode of the sub reception electrodes are connected to one reception electrode wiring. The method of claim 3,
Further comprising differential amplifiers electrically connected to the pair of reception electrode wires,
Wherein each of the differential amplifiers is configured to differentiate the pair of sensing signals received from the pair of receiving electrode lines. 5. The method of claim 4,
Wherein the differential amplifier is configured to compensate for the reduction of the intensity of the touch signal or to compensate for the common noise according to an increase in the length of the receiving electrode wiring corresponding to the panel size. The method according to claim 1,
Wherein the touch panel is attached to the panel or embedded in the panel. The method according to claim 1,
The touch sensing unit includes:
When the touch driving signal is supplied to the n < th > driving electrode among the driving electrodes, a sensing signal, which is determined to have generated a touch, is received in the first direction Calculates a corresponding first coordinate,
Th sub-driver electrode and the sub-driver electrode of the n sub-sub-sub-driver sub-driver electrode, Calculating a second coordinate corresponding to the second direction by using the position information of the sub receiving electrode in the second direction,
Wherein the display device is configured to determine a position at which a touch is generated using the first coordinate and the second coordinate. The method according to claim 1,
Wherein the panel further comprises a gate line, a data line and a gate insulating film over the gate line,
The driving electrode wiring is formed in the same layer as the gate line,
And the receiving electrode wiring is configured to overlap the data line with the insulating film interposed therebetween. 8. The method of claim 7,
Wherein the sub-driving electrode is configured to sandwich the driving electrode wiring and the insulating film, and is connected to the driving electrode wiring through a contact hole included in the insulating film. The method according to claim 1,
Two sub-receiving electrodes constituting a pair of receiving electrodes are arranged between two sub-driving electrodes constituting one driving electrode,
Wherein the touch sensing unit supplies a touch driving signal to the plurality of driving electrodes,
Wherein the touch sensing unit is configured to determine whether the touch panel is touched by using a pair of sensing signals received from the pair of receiving electrodes. 11. The method of claim 10,
The touch sensing unit includes:
Wherein when the touch driving signal is supplied to the n < th > driving electrode among the driving electrodes, the pair of receiving electrodes including the receiving electrode receiving the sensing signal corresponding to the touch among the non- Calculates a first coordinate corresponding to the first direction using position information in the first direction,
And the sub-driving electrode of the n-th driving electrode among the sub-receiving electrodes constituting the receiving electrode receiving the sensing signal corresponding to the touch and the position information of the n-th driving electrode in the second direction, Calculating a second coordinate corresponding to the second direction using position information of the mth sub-receiving electrode in the second direction,
Wherein the display device is configured to determine a position at which a touch is generated using the first coordinate and the second coordinate. 11. The method of claim 10,
And one sub-receiving electrode of the two sub-receiving electrodes is formed between two sub-driving electrodes extending in the second direction and constituting another driving electrode adjacent to the n-th driving electrode / RTI > Supplying a touch driving signal to each of the driving electrodes arranged in the first direction of the panel;
Driving signal is supplied to the n-th driving electrode among the driving electrodes, the at least two receiving electrodes among the two sub-driving electrodes among the sub-driving electrodes constituting the n-th driving electrode, ; And
And determining whether to touch at least two positions arranged along a second direction perpendicular to the first direction between the two sub-driving electrodes by analyzing the sensing signals, Way. 14. The method of claim 13,
Wherein the receiving the sensing signals comprises:
Driving electrodes are formed between two sub-driving electrodes among the sub-driving electrodes forming the n < th > driving electrode, and receive sensing signals from at least two sub-receiving electrodes electrically insulated from each other A method of driving a display device. 14. The method of claim 13,
Wherein the analyzing of the sensing signals comprises:
Calculating a first coordinate value corresponding to the first direction using position information in the first direction of the reception electrode which is determined to have generated a touch;
Th sub-driver electrode and the sub-driver electrode of the n sub-sub-sub-driver sub-driver electrode, Calculating a second coordinate corresponding to the second direction using position information of the sub receiving electrode in the second direction; And
And using the first coordinate and the second coordinate to determine a position at which the touch is generated. 14. The method of claim 13,
Wherein the receiving the sensing signals comprises:
And a pair of driving electrodes disposed between two sub-driving electrodes among the sub-driving electrodes constituting the n-th driving electrode when the touch driving signal is supplied to the n-th driving electrode among the driving electrodes, Receiving detection signals,
Wherein the analyzing of the sensing signals comprises:
The control unit analyzes the differential signal through the differential amplifying unit connected to the pair of receiving electrodes and determines whether or not the two touch electrodes are touched at the two positions arranged in the second direction crossing the first direction among the sub- And judging whether or not the display device is operating. 14. The method of claim 13,
Wherein the receiving the sensing signals comprises:
Wherein each of the sub-driving electrodes is formed between two sub-driving electrodes forming the n-th driving electrode and receives a sensing signal from each of two sub-receiving electrodes forming a pair of receiving electrodes. Driving method. A driving electrode including a plurality of sub-driving electrodes arranged in a first direction; And
And a receiving electrode including a plurality of sub-receiving electrodes arranged in a second direction,
And at least two sub-receiving electrodes electrically insulated from each other are disposed between adjacent sub-driving electrodes. 19. The method of claim 18,
The sub-driving electrodes are electrically connected to each other by a driving electrode wiring,
And the sub receiving electrodes are electrically connected to each other by a receiving electrode wiring. 20. The method of claim 19,
The sub-driving electrode is disposed with the driving electrode wiring and the insulating film interposed therebetween,
The sub receiving electrode is disposed with the receiving electrode wiring and the insulating film interposed therebetween,
Wherein the sub-driving electrode is connected to the driving electrode wiring through a contact hole formed in the insulating film,
And the sub receiving electrode is connected to the receiving electrode wiring via a contact hole formed in the insulating film. 19. The method of claim 18,
And the sub-receiving electrodes forming the at least two receiving electrodes are alternately arranged along the second direction. 22. The method of claim 21,
And the reception electrode lines disposed between the adjacent sub-driving electrodes overlap the sub-reception electrodes arranged alternately in the second direction.

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