KR102175932B1 - Touch sensing system and driving method thereof - Google Patents

Abstract

The present invention relates to a touch sensing system and a driving method thereof, comprising: a touch screen including self-capacitive sensors formed on each of electrodes, mutual capacitive sensors formed between adjacent electrodes, and wires connected to the electrodes; And a touch sensing circuit configured to sense a touch input based on a change in capacity of the mutual capacitive sensors and sense a touch input based on a change in capacity of the self capacitive sensors.

Description

Touch sensing system and its driving method {TOUCH SENSING SYSTEM AND DRIVING METHOD THEREOF}

The present invention relates to a touch sensing system and a driving method thereof.

The user interface (UI) allows a person (user) to easily control various electronic devices as desired. Representative examples of such a user interface include a keypad, a keyboard, a mouse, an On Screen Display (OSD), a remote controller having an infrared or radio frequency (RF) communication function. User interface technology is constantly evolving in the direction of enhancing user sensitivity and operational convenience. Recently, user interfaces are evolving into touch UIs, voice recognition UIs, and 3D UIs.

Touch UI is essentially adopted in portable information devices. The touch UI is implemented by forming a touch screen on the screen of a display device. Such a touch screen may be implemented in a capacitive manner. The capacitive touch screen senses a touch input by sensing a change in capacitance, that is, an amount of change in charge of the touch sensor when a finger or a conductive material contacts the touch sensor.

The capacitive sensor may be implemented as a self-capacitance sensor or a mutual capacitance sensor. Each of the electrodes 12 of the self-capacitive sensor Cs is connected 1:1 to the sensor wires 12 formed along one direction as shown in FIG. 1. The mutual capacitance sensor is formed at the intersection of two orthogonal wirings Tx and Rx with a dielectric layer therebetween.

Referring to FIG. 1, wires 14 are connected to each of the electrodes 12 of the sensor. The self-capacitance sensor Cs includes a capacitance formed on each of the electrodes 12. When the driving signal is applied to the electrode through the wiring 14, electric charge Q is accumulated in the sensor. At this time, when a finger or a conductive object comes into contact with the electrode 14, a parasitic capacitance Cf is additionally connected to the self-capacitance sensor Cs, thereby changing a capacitance value. Accordingly, a capacitance value is different between the sensor touched by the finger and the sensor not touched, so that it is possible to determine whether or not the finger touched.

However, since the self-capacitive sensors as shown in FIG. 1 have a large number of wires 14, a dead zone in which the wires 14 are routed is large. The dead zone is an area in which a touch input cannot be sensed. In FIG. 2, (A) is a schematic diagram of sensing a touch input when a finger is touched on the electrode 12, and (B) is an example in which the touch input is not sensed when a finger is touched on the dead zone.

In a conventional touch sensing system using a self-capacitive sensor, as shown in FIG. 1, since there are many wires 14, the dead zone increases and the electrodes of the sensors cannot be densely formed, so the resolution is low. If the number of sensors is increased in order to increase the resolution, the number of wires 14 increases as the number of sensors, and thus the dead zone becomes larger. As a result, in the conventional touch sensing system, it is difficult not only to improve the resolution due to the structural problem of the self-capacitive sensor, but also to improve the sensing sensitivity (Sensitivity) and accuracy (Accuracy). In addition, in the conventional touch sensing system, as the number of sensors increases, the number of channels of the touch sensing integrated circuit (hereinafter referred to as “IC”) increases, and the size of the IC chip increases.

The present invention provides a touch sensing system capable of increasing resolution, sensing sensitivity, and accuracy, and a driving method thereof.

The touch sensing system of the present invention includes: a touch screen including self-capacitive sensors formed on each of the electrodes, mutual capacitive sensors formed between adjacent electrodes, and wires connected to the electrodes; And a touch sensing circuit configured to sense a touch input based on a change in capacity of the mutual capacitive sensors and sense a touch input based on a change in capacity of the self capacitive sensors.

The wires are connected 1:1 to the electrodes.

The touch sensing circuit applies a driving signal to one or more of the electrodes to charge electric charges to the self-capacitive sensors and the mutual capacitive sensors, and receives electric charges through other electrodes in synchronization with the driving signals, and the mutual capacitive sensor Touch input is sensed based on the change in capacity of the devices. The touch sensing circuit includes a sensing circuit that receives electric charges charged in the self-capacitive sensors and senses a touch input based on a change in capacity of the self-capacitive sensors.

The touch sensing circuit senses a touch input based on a change in capacity of the mutual capacitive sensors and at the same time senses a touch input based on a change in capacity of the self capacitive sensors.

The touch sensing circuit senses a touch input based on a change in capacity of the mutual capacitive sensors and then senses a touch input based on a change in capacity of the self capacitive sensors.

The driving method of the touch sensing system includes sensing a touch input based on a change in capacity of the mutual capacitive sensors; And sensing a touch input based on a change in capacitance of the self-capacitive sensors.

In the present invention, self-capacitive sensors are formed on each of the electrodes of a touch screen, and mutual capacitive sensors are formed in a wiring routing path between the electrodes. As a result, the touch sensing system of the present invention can improve the resolution, sensing sensitivity, and accuracy of the touch screen.

1 is a plan view showing an electrode and a wiring structure of a touch screen including self-capacitive sensors.
FIG. 2 is a cross-sectional view showing a touch sensing area and a dead zone in the touch screen of FIG. 1.
3 is a diagram showing a principle of removing a dead zone from a touch screen according to an embodiment of the present invention.
4 is a diagram showing a mutual capacitance sensing method using a self capacitance sensor.
5 is a diagram showing positions that can be sensed by a self-capacitance sensing method and positions that can be sensed by a mutual capacity sensing method.
6 to 8 are diagrams illustrating an electrode structure capable of increasing the number of sensing data compared to a rectangular electrode structure.
9 is a diagram showing a touch sensing circuit according to an embodiment of the present invention.
10 to 12 are waveform diagrams showing switch on/off timings of the touch sensing circuit shown in FIG. 9.
13 is a block diagram showing a touch sensing system according to an embodiment of the present invention.
14 to 16 are diagrams showing various combinations of a display panel and touch sensors.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numbers throughout the specification mean substantially the same elements. In the following description, when it is determined that detailed descriptions of known functions or configurations related to the present invention may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

3 and 4, a touch screen according to an embodiment of the present invention includes a plurality of electrodes 12 and wires 14 connected to each of the electrodes 12.

The touch sensors of this touch screen are divided into self-capacitive sensors Cs and mutual capacitive sensors Cm. A self-capacitive sensor Cs is formed on each of the electrodes 12, and a mutual capacitance sensor Cm is formed on the adjacent electrodes 12.

In the self-capacitance sensing method, a driving signal is applied to each of the electrodes 12 through the wiring 14 to supply the electric charge Q to the self-capacitance sensor Cs. Subsequently, when the capacitance change of the self-capacitive sensor Cs is sensed through the electrode 12 and the wiring 14 to which the driving signal is applied, a touch input on the electrode 12 may be sensed.

In the mutual capacitance sensing method, a driving signal is applied to one of the adjacent electrodes 12 through a wiring 14 to supply charge Q to the mutual capacitance sensor Cm. When the capacitance change is sensed through the other electrode Rx and the wiring 14 in synchronization, a touch input positioned between adjacent electrodes may be sensed. The mutual capacitance sensing method may sense a touch input on the wires 14.

The charge (Q) received through the self-capacitive sensor (Cs) and the mutual capacitive sensor (Cm) is accumulated in the integrator 30, and the sensing data (Q) as a digital value through an analog-to-digital converter (ADC) ( Or touch raw data). The touch sensing system executes a preset touch sensing algorithm to compare digital data with a preset threshold value, determines a change in capacity of the sensors Cs and Cm before and after the touch, and calculates coordinates of the touch input location.

In the case of the 3×3 electrodes as shown in FIG. 4, since the mutual capacitance sensing method can sense a touch input for each position between the electrodes, 12 pieces of sensing data can be obtained. When there are sensors of n×m (where n and m are positive integers of 2 or more), the number of sensing data that can be obtained by the mutual capacity sensing method is (n-1)×m + n×(m-1). The number of sensing data that can be obtained by the self-capacity sensing method is n×m. Accordingly, in the case of n×m sensors, the number of sensing data that can be obtained by the mutual capacity sensing method and the self capacity sensing method is (n-1)×m + n×(m-1) + n×m pieces.

Accordingly, the touch sensing system of the present invention not only can sense a touch input from each of the electrodes using self-capacitive sensors and mutual capacitive sensors, but also sense a touch input in the dead zone of the prior art using a mutual capacitive sensing method. Thus, the resolution, sensing sensitivity and accuracy of the touch screen can be improved. In FIG. 5,'⑥' is a touch input position that can be sensed by the self-capacitive sensing method. ①~⑤ are touch input positions that can be sensed by the mutual capacitive sensing method.

When the same electrodes are arranged more densely by changing the electrode formation as shown in FIGS. 6 to 8, the number of sensing data that can be obtained at the same size is greater than in the prior art, so that resolution, sensing sensitivity and accuracy can be further improved .

In the example of Fig. 6, the electrode 12 is patterned into a triangle. A routing path through which the wiring 14 passes is formed between the triangular electrodes 12. The triangular electrodes 12 may be staggered so that the routing path becomes a star shape.

In the example of FIG. 7, the electrode 12 is patterned in a diamond (or rhombus) shape. A routing path through which the wiring 14 passes is formed between the diamond-shaped electrodes 12. The diamond-shaped electrodes 12 may be staggered so that the routing path is bent in a zigzag shape.

In the example of Fig. 8, the electrode 12 is patterned in a hexagonal shape. A routing path through which the wiring 14 passes is formed between the hexagonal electrodes 12. The hexagonal electrodes 12 may be staggered so that the routing path is bent in a zigzag shape.

9 is a diagram showing a touch sensing circuit according to an embodiment of the present invention.

Referring to FIG. 9, the touch sensing circuit of the present invention includes a sensing unit (SU), a multiplexer (MUX), and the like.

The touch sensing circuit applies a driving signal to one or more electrodes 12 to charge electric charges to the touch sensors Cs and Cm, and receives electric charges through other electrodes in synchronization with the driving signals, thereby mutual capacitance sensors Cm. Touch input is sensed based on the change in capacity of. In addition, the touch sensing circuit receives electric charges charged in the self-capacitive sensors Cs and senses a touch input based on the change in capacities of the self-capacitive sensors Cs.

The sensing unit SU applies a driving signal to the touch sensors Cs and Cm, and receives electric charges from the self-capacitive sensors Cs and the mutual capacitive sensors Cm. The sensing unit SU includes a driving signal generator 91 and a sensing unit 92. The driving signal generator 91 generates a driving signal to supply electric charges to the touch sensors Cs and Cm. The driving signal may be generated in various forms such as a square wave type pulse, a sine wave, and a triangular wave. The driving signal may be applied N times to each of the touch sensors Cs and Cm so that charges may be accumulated N (N is a positive integer greater than or equal to 2) times in the integrator of the sensing unit 92. The sensing unit 92 accumulates the charge Q from the touch sensors Cs and Cm in the integrator 30, converts it into sensing data of a digital value through the ADC 32, and executes a touch sensing algorithm.

The multiplexer MUX includes driving switches T1 to T4 connecting the driving signal generator 91 and the wirings 14, and sensing switches S1 to connecting the sensing unit 92 and the wirings 14. S4). When the driving switches T1 to T4 are turned on, the driving signal from the driving signal generator 91 is transmitted to the electrodes 12 of the touch sensors Cs and Cm through the wirings 14. ) Is applied. When the sensing switches S1 to S4 are turned on, the electric charge Q of the touch sensors Cs and Cm is received by the sensing unit 92.

10 to 12 are waveform diagrams showing switch on/off timings of the touch sensing circuit shown in FIG. 9.

In the mutual capacitance sensing method, one or more driving switches T1 to T4 are turned on and at the same time, one or more sensing switches S1 to S4 are turned on. Charge Q is charged in the touch sensors Cs and Cm by the driving signal, and at the same time, the electric charge is received from the touch sensors Cs and Cm in the sensing unit 92. In the mutual capacitance sensing method, a touch input position between electrodes is sensed by analyzing charges received from the mutual capacitance sensors Cm. Here, the mutual capacitance sensors Cs have a capacitance value that is a sum of mutual capacitance and self capacitance connected in parallel through one electrode.

In the self-capacitance sensing method, the sensing switches S1 to S4 are turned on while the driving switches T1 to T4 are turned off. Then, the electric charge of the self-capacitive sensor Cs charged by the previous driving signal is received by the sensing unit 92. In the self-capacitance sensing method, a touch input position on electrodes is sensed by analyzing electric charges received from the self-capacitive sensor Cs.

Referring to FIG. 10, the mutual capacitance sensing method and the self capacitance sensing method are substantially simultaneously performed. For example, since there is almost no time difference between the first mutual capacitance sensing time and the first self capacitance sensing time, the mutual capacitance sensing method and the self capacitance sensing method are simultaneously performed. Sensing is the first mutual capacity sensing time, the first self-capacitance sensing time, the second mutual capacity sensing time, the second self-capacitance sensing time, the second mutual capacity sensing time, the second self-capacitance sensing time, and the fourth mutual capacity sensing time. , And the fourth self-capacitance sensing time sequence.

During the first mutual capacitance sensing time, the first driving switch T1 and the second to fourth sensing switches S2 to S4 are turned on, and the other switches S1 and T2 to T4 are turned off. In this case, the electric charge Q is received from the mutual capacitive sensors Cm connected to the second to fourth electrodes P2 to P4, and the touch input is sensed by the mutual capacitive sensing method. Subsequently, while the first sensing switch S1 is turned on during the first self-capacitance sensing time, the remaining switches S2 to S4 and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the first electrode P1, and the touch input is sensed by the self-capacitance sensing method.

At the second mutual capacity sensing time, the second driving switch T2, the first sensing switch S1, the third sensing switch S3, and the fourth sensing switch S4 are turned on and the other switches S2, T1, T3 are turned on. , T4) is turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, third, and fourth electrodes P1, P3, and P4, and a touch input is sensed by a mutual capacitive sensing method. Subsequently, while the second sensing switch S2 is turned on at the second self-capacitance sensing time, the remaining switches S1, S3, S4, and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the second electrode P2, and the touch input is sensed by the self-capacitance sensing method.

At the third mutual capacitance sensing time, the third driving switch T3, the first sensing switch S1, the second sensing switch S2, and the fourth sensing switch S4 are turned on and the other switches S3, T1, T2 are turned on. , T4) is turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, second, and fourth electrodes P1, P2, and P4, and a touch input is sensed by a mutual capacitive sensing method. Subsequently, while the third sensing switch S3 is turned on at the third self-capacitance sensing time, the remaining switches S1, S2, S4, and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the third electrode P3, and the touch input is sensed by the self-capacitance sensing method.

During the fourth mutual capacitance sensing time, the fourth driving switch T4 and the first to third sensing switches S1 to S3 are turned on, and the other switches S4, T1, T2, and T3 are turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, second, and third electrodes P1, P2, and P3, and the touch input is sensed by the mutual capacitive sensing method. Subsequently, while the fourth sensing switch S4 is turned on at the fourth self-capacitance sensing time, the remaining switches S1 to S3 and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the fourth electrode P4, and the touch input is sensed by the self-capacitance sensing method.

Referring to FIG. 11, the self capacitance sensing method is performed following the mutual capacitance sensing method. Sensing may be performed in the order of first to fourth self-capacitance sensing times after the first to fourth mutual capacity sensing times.

During the first mutual capacitance sensing time, the first driving switch T1 and the second to fourth sensing switches S2 to S4 are turned on, and the other switches S1 and T2 to T4 are turned off. In this case, the electric charge Q is received from the mutual capacitive sensors Cm connected to the second to fourth electrodes P2 to P4, and the touch input is sensed by the mutual capacitive sensing method. Subsequently, the second driving switch T2, the first sensing switch S1, the third sensing switch S3, and the fourth sensing switch S4 are turned on at the second mutual capacity sensing time, and the other switches S2 and T1 are turned on. , T3, T4) are turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, third, and fourth electrodes P1, P3, and P4, and a touch input is sensed by a mutual capacitive sensing method. Subsequently, the third driving switch T3, the first sensing switch S1, the second sensing switch S2, and the fourth sensing switch S4 are turned on at the third mutual capacity sensing time, and the other switches S3 and T1 are turned on. , T2, T4) are turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, second, and fourth electrodes P1, P2, and P4, and a touch input is sensed by a mutual capacitive sensing method.

The first sensing switch S1 is turned on during the first self-capacitance sensing time, while the remaining switches S2 to S4 and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the first electrode P1, and the touch input is sensed by the self-capacitance sensing method. Subsequently, while the second sensing switch S2 is turned on at the second self-capacitance sensing time, the remaining switches S1, S3, S4, and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the second electrode P2, and the touch input is sensed by the self-capacitance sensing method. Subsequently, while the third sensing switch S3 is turned on at the third self-capacitance sensing time, the remaining switches S1, S2, S4, and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the third electrode P3, and the touch input is sensed by the self-capacitance sensing method. Subsequently, at the fourth mutual capacitance sensing time, the fourth driving switch T4 and the first to third sensing switches S1 to S3 are turned on, and the other switches S4, T1, T2, and T3 are turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, second, and third electrodes P1, P2, and P3, and the touch input is sensed by the mutual capacitive sensing method. Subsequently, while the fourth sensing switch S4 is turned on at the fourth self-capacitance sensing time, the remaining switches S1 to S3 and T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the fourth electrode P4, and the touch input is sensed by the self-capacitance sensing method.

Referring to FIG. 12, the self-capacitance sensing method is performed following the mutual capacitive sensing method. Sensing may be performed in the order of self-capacitance sensing time after the first to fourth mutual capacitive sensing times.

During the first mutual capacitance sensing time, the first driving switch T1 and the second to fourth sensing switches S2 to S4 are turned on, and the other switches S1 and T2 to T4 are turned off. In this case, the electric charge Q is received from the mutual capacitive sensors Cm connected to the second to fourth electrodes P2 to P4, and the touch input is sensed by the mutual capacitive sensing method. Subsequently, the second driving switch T2, the first sensing switch S1, the third sensing switch S3, and the fourth sensing switch S4 are turned on at the second mutual capacity sensing time, and the other switches S2 and T1 are turned on. , T3, T4) are turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, third, and fourth electrodes P1, P3, and P4, and a touch input is sensed by a mutual capacitive sensing method. Subsequently, the third driving switch T3, the first sensing switch S1, the second sensing switch S2, and the fourth sensing switch S4 are turned on at the third mutual capacity sensing time, and the other switches S3 and T1 are turned on. , T2, T4) are turned off. In this case, the charge Q is received from the mutual capacitive sensors Cm connected to the first, second, and fourth electrodes P1, P2, and P4, and a touch input is sensed by a mutual capacitive sensing method.

The first to fourth sensing switches S1 to S4 are turned on during the self-capacitance sensing time, while the remaining switches T1 to T4 are turned off. In this case, the electric charge Q is received from the self-capacitive sensor Cs connected to the first to fourth electrodes P1 to P4, and the touch input is sensed by the self-capacitance sensing method.

13 is a block diagram showing a touch sensing system according to an embodiment of the present invention. 14 to 16 are diagrams showing various combinations of a display panel and touch sensors.

13 to 16, the touch sensing system of the present invention includes a touch screen (TSP) and a touch sensing circuit 100.

The touch screen TSP includes electrodes 12 of the touch sensors Cs and Cm and wires 14 connected 1:1 to the electrodes 12. The touch screen TSP is bonded on the upper polarizing plate POL1 of the display panel DIS as shown in FIG. 14, or formed between the upper polarizing plate POL1 and the upper substrate GLS1 of the display panel DIS as shown in FIG. 15. Can be. Also, the touch sensors Cs and Cm of the touch screen TSP may be embedded in the pixel array of the display panel DIS in an in-cell type as shown in FIG. 16. In FIGS. 14 to 16, "PIX" refers to a pixel electrode of a liquid crystal cell, "GLS2" refers to a lower substrate, and "POL2" refers to a lower polarizing plate.

The touch sensing circuit 100 may be implemented in a circuit configuration as shown in FIG. 9. The touch sensing circuit applies a driving signal to the touch sensors Cs and Cm and senses a change in capacitance of the touch sensors Cs and Cm before and after the touch to determine whether a conductive material such as a finger is touched and its location.

The display device of the present invention is a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an organic light emitting diode display (Organic Light Emitting Display). , OLED), and electrophoresis display devices (Electrophoresis, EPD).

The active area A/A of the display panel DIS includes a pixel array in which an input image is displayed. The pixel array includes a plurality of data lines (D1 to Dm, m is a positive integer greater than i), and a plurality of scan lines (G1 to Gn, n is greater than j) intersecting the data lines (D1 to Dm). Integer), and pixels arranged in a matrix form defined by an intersection structure of the data lines D1 to Dm and the scan lines G1 to Gn. The scan line is also called a gate line. A color filter may be formed on the display panel DIS to implement color.

The display driving circuit includes a data driving circuit 102, a scan driving circuit 104, and a timing controller 106 to write video data of an input image to pixels.

The data driving circuit 102 converts digital video data RGB input from the timing controller 106 into a gamma compensation voltage, generates a data voltage, and supplies the data voltage to the data lines D1 to Dm. The scan driving circuit 104 sequentially supplies scan pulses (or gate pulses) synchronized with the data voltage to the scan lines G1 to Gn to select a line of the display panel DIS in which data is to be written.

The timing controller 106 receives timing signals such as a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), a data enable signal (Data Enable, DE), and a main clock (MCLK) input from the host system. The timing controller 106 generates a scan timing control signal and a data timing control signal for controlling the operation timing of the data driving circuit 102 and the scan driving circuit 104. The scan timing control signal may include a gate start pulse (GSP), a gate shift clock, a gate output enable signal (Gate Output Enable, GOE), and the like. The data timing control signal may include a source sampling clock (SSC), a polarity control signal (Polarity, POL), a source output enable signal (Source Output Enable, SOE), and the like.

The host system is connected to an external video source device such as a navigation system, a set-top box, a DVD player, a Blu-ray player, a personal computer (PC), a home theater system, a broadcast receiver, a phone system, etc. Image data can be input from the device. The host system converts image data from an external video source device into a format suitable for display on the display panel DIS. In addition, the host system executes an application program associated with the coordinates (XY) of the touch input location received from the touch sensing circuit 100.

It will be appreciated by those skilled in the art through the above description that various changes and modifications can be made without departing from the technical idea of the present invention. Therefore, the technical scope of the present invention should not be limited to the content described in the detailed description of the specification, but should be determined by the claims.

TSP: Touch screen Cm: Touch sensor
SU: Sensing unit MUX: Multiplexer
91: drive signal generator 92: sensing unit
100: touch sensing circuit

Claims (11)

A touch screen including self-capacitive sensors formed on each of the electrodes, mutual capacitive sensors formed between adjacent electrodes, and wires connected to the electrodes; And
A touch sensing circuit sensing a touch input based on a change in capacity of the mutual capacitive sensors and sensing a touch input based on a change in capacity of the self capacitive sensors,
The touch sensing circuit,
A touch sensing system comprising providing coordinates of each of the self-capacitive sensor and the mutual capacitive sensor determined as a touch input position to a host system. The method of claim 1,
The touch sensing system, characterized in that the wires are connected 1:1 to the electrodes. The method of claim 1,
The touch sensing circuit,
Applying a driving signal to one or more of the electrodes to charge the self-capacitive sensors and the mutual capacitive sensors, and receiving the charge through another electrode in synchronization with the driving signal, based on the change in capacity of the mutual capacitive sensors To sense the touch input,
And a sensing circuit configured to sense a touch input based on a change in capacitance of the self-capacitive sensors by receiving electric charges charged in the self-capacitive sensors. The method of claim 3,
The touch sensing circuit,
A touch sensing system comprising sensing a touch input based on a change in capacity of the mutual capacitive sensors and sensing a touch input based on a change in capacity of the self capacitive sensors. The method of claim 3,
The touch sensing circuit is
A touch sensing system comprising sensing a touch input based on a change in capacity of the mutual capacitive sensors and then sensing a touch input based on a change in capacity of the self capacitive sensors. The method according to any one of claims 1 to 5,
The electrodes are patterned in any one of a square, a triangle, a diamond, and a hexagon,
The touch sensing system, characterized in that the routing paths of the wires have a star shape or a zigzag shape. In the driving method of a touch screen including self-capacitive sensors formed on each of the electrodes, mutual capacitive sensors formed between adjacent electrodes, and wires connected to the electrodes,
Sensing a touch input based on a change in capacity of the mutual capacitive sensors;
Sensing a touch input based on a change in capacitance of the self-capacitive sensors; And
And providing the coordinates of each of the self-capacitive sensor and the mutual capacitive sensor determined as a touch input position to a host system. The method of claim 7,
Sensing a touch input based on a change in capacity of the mutual capacitive sensors,
Applying a driving signal to one or more of the electrodes to charge the self-capacitive sensors and the mutual capacitive sensors, and receiving the charge through another electrode in synchronization with the driving signal, based on the change in capacity of the mutual capacitive sensors To sense the touch input,
Sensing a touch input based on a change in capacitance of the self-capacitive sensors,
A driving method of a touch sensing system, comprising receiving electric charges charged in the self-capacitive sensors and sensing a touch input based on a change in capacity of the self-capacitive sensors. The method of claim 8,
The step of sensing a touch input based on a change in capacity of the mutual capacitive sensors and the step of sensing a touch input based on a change in capacity of the self-capacitive sensors are performed simultaneously. The method of claim 8,
The driving method of a touch sensing system, characterized in that after the step of sensing a touch input based on a change in capacity of the mutual capacitive sensors, a step of sensing a touch input based on a change in capacity of the self capacitive sensors is performed. The method of claim 1,
The touch sensing circuit is
A plurality of driving signal generators generating a driving signal;
A plurality of sensing units for receiving electric charges; And
A plurality of driving switches connecting each of the wirings to a corresponding driving signal generator; And
A plurality of sensing switches connecting each of the wires to a corresponding sensing unit,
The driving switch elements are sequentially turned on to sequentially supply the driving signal to the wires to charge the mutual capacitance sensors and the self capacitance sensors,
Wires connected to mutual capacitance sensors to be sessioned through one or more sensing switch elements turned on in synchronization with the driving signal are connected to a corresponding sensing unit,
A touch sensing system in which wires connected to self-capacitive sensors to be sensed through other sensing switches turned on following sensing switch elements synchronized with the driving signal are connected to a corresponding sensing unit.

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