KR20170051774A - Techniques for driving panel - Google Patents

Abstract

The present invention provides a display apparatus for driving a display and driving a touch at the same time in a part of a time section or the whole time section. The display apparatus comprises: a panel in which a first data line group and a first sensor electrode group are positioned in a first area, and a second data line group and a second sensor electrode group are positioned in a second area; and a panel driving circuit for displaying and driving the first area in a first time section, sensing and driving the second area in the first time section, sensing and driving the first area in a second time section, and displaying and driving the second area in the second time section.

Description

TECHNIQUES FOR DRIVING PANEL < RTI ID = 0.0 >

The present invention relates to a technique for driving a panel.

A technology for recognizing an object approaching or touching a touch panel is referred to as a touch sensing technique.

The touch panel is placed on the same plane as the display panel so that the user can input a user operation signal to the touch panel while viewing the image on the display panel.

The user manipulation signal generation method provides an incredible user intuitiveness compared to the other previous user manipulation signal input methods (for example, a mouse input method or a keyboard input method).

According to this advantage, a touch sensing technique is applied to various electronic devices including a display panel.

On the other hand, the touch panel may be completely separated from the display panel depending on its shape. For example, in a form known as an add-on type, the touch panel and the display panel are completely separated.

On the other hand, the touch panel and the display panel can share some components with each other. For example, the sensor electrode positioned on the touch panel can be used as a common electrode of the display panel. This is the type known as the in-cell type.

Conventionally, a display device of an inscell type panel is divided into time zones and operates only in the display mode in the display section and in the touch mode only in the touch section.

In the conventional method, the frame time is divided into the display period and the touch period. However, due to the time limitation, the problem that the user can not allocate more than a certain period of time to the touch period occurs.

Generally, the longer the touch interval, the greater the signal to noise ratio (SNR). In the conventional method, since the length of the touch interval is short, the SNR is low and the sensitivity of the touch decreases.

If the touch interval is set longer to compensate for the problem of the touch sensitivity, the display interval may be reduced, which may cause an increase in circuit components for display. On the other hand, if the touch section is also maintained to maintain the display section, there may arise a problem of increasing components for touch sensing in order to improve the touch sensitivity.

In view of the foregoing, an object of the present invention is, in one aspect, to provide a technique for increasing the time for the touch driving while maintaining the time for the display driving.

In another aspect, an object of the present invention is to provide a technique for increasing time for driving a display while maintaining time for touch driving.

In another aspect, an object of the present invention is to provide a technique for increasing both time for display driving and touch driving.

In another aspect, an object of the present invention is to provide a technique for simultaneously performing display driving and touch driving in some time periods or entire time periods.

In order to achieve the above object, in one aspect, the present invention provides a display device that simultaneously performs display driving and touch driving in some time periods.

According to another aspect of the present invention, there is provided a data driver for supplying a data voltage selectively to a first data line and a second data line, the first data line supplying a data voltage to a first data line and the second time line supplying a data voltage to a second data line Supplying a sensor driving signal to a data driving circuit for supplying a data voltage and a second sensor electrode corresponding to a position of the second data line in a first time period and supplying a sensor driving signal to a first sensor electrode corresponding to a position of the first data line in a second time period And a sensor driving circuit for supplying a sensor driving signal to the sensor electrode.

According to another aspect of the present invention, there is provided a plasma display panel comprising a first data line and a first sensor electrode in a first region, a first data line and a second data line in a second region, A data driver circuit for driving the first data line and the second data line, the data driver circuit comprising: a switching unit selectively connected to the first data line and the second data line; And an output buffer unit for supplying the data voltage to the data line and supplying the data voltage to the second data line through the switching unit in the second time interval in which the sensor driving signal is supplied to the first sensor electrode.

According to another aspect of the present invention, there is provided a liquid crystal display device including a first sensor electrode and a second sensor electrode with respect to a panel in which a first data line and a first sensor electrode are positioned in a first region and a second data line and a second sensor electrode are positioned in a second region, A sensor driving circuit for driving two sensor electrodes, comprising: a sensor driver for supplying a sensor driving signal to a second sensor electrode in a first time period in which a data voltage is supplied to a first data line and receiving a reaction signal, A proximity or touch of an external object with respect to the panel is obtained by using a reaction signal received at an analog front end and a analog front end for supplying a sensor driving signal to a first sensor electrode in a second time interval when a voltage is supplied and receiving a reaction signal And a signal processing unit for sensing the sensor signal.

According to another aspect of the present invention, there is provided a liquid crystal display device including a panel in which a first data line group and a first sensor electrode group are located in a first region, a second data line group and a second sensor electrode group are located in a second region, And a panel driving circuit for driving the first area for driving the sensor and driving the second area for sensing, driving the first area for sensing in the second time slot, and driving the second area for display.

According to another aspect of the present invention, there is provided a data driver for supplying a data voltage selectively to a first data line, a second data line and a third data line, the first data line supplying a data voltage to the first data line, A data driving circuit for supplying a data voltage to the second data line at a time point and supplying a data voltage to the third data line at a third time slot; And supplying a sensor driving signal to a second sensor electrode corresponding to a position of the second data line in the first time period and a third sensor electrode corresponding to a position of the third data line, The sensor driving signal is supplied to the third sensor electrode corresponding to the position of the third data line and the first sensor electrode corresponding to the position of the first data line and corresponds to the position of the first data line in the third time interval And a sensor driving circuit for supplying a sensor driving signal to the first sensor electrode and the second sensor electrode corresponding to the position of the second data line.

According to another aspect of the present invention, there is provided a liquid crystal display device including a first data line and a first sensor electrode in a first region, a second data line and a second sensor electrode in a second region, And a third data line, wherein the first data line, the second data line, and the third data line are connected to the first data line, the second data line, A switching unit connected to one of the third data lines; And supplying a data voltage to the first data line through the switching unit in a first time interval in which a sensor driving signal is supplied to the second sensor electrode and the third sensor electrode, A third time slot in which a sensor driving signal is supplied to the first sensor electrode and the second sensor electrode, and a data voltage is supplied to the second data line through the switching unit in a second time slot, And an output buffer for supplying a data voltage to the third data line through the switching unit.

As described above, according to the present invention, on the one hand, there is an effect of increasing the time for the touch driving while maintaining the time for the display driving. According to another aspect of the present invention, there is an effect of increasing the time for driving the display while maintaining the time for the touch driving. In another aspect, the present invention has the effect of increasing both the time for display driving and the time for touch driving. On the other hand, there is an effect that the display driving and the touch driving are simultaneously performed in some time periods or all the time periods.

1 is a view schematically showing a display device according to an embodiment.
FIG. 2 is a first exemplary view showing that a plurality of display driving areas and a plurality of touch driving areas are located on the panel of FIG. 1. FIG.
FIG. 3 is a second exemplary view showing that a plurality of display driving areas and a plurality of touch driving areas are located on the panel of FIG. 1. FIG.
4A and 4B are diagrams for explaining data lines and sensing line driving signals supplied to the display driving region and the touch driving region.
5 is a view for explaining a gate driving signal supplied to the display driving region and the touch driving region.
6A and 6B are first exemplary views schematically showing a part of the configuration of a data driving circuit and a panel according to an embodiment in a double speed driving method.
7 is a second exemplary view schematically showing a part of the configuration of a data driving circuit and a panel according to an embodiment in a double speed driving method.
8 is a cross-sectional view of the panel for the data line cross portion of Fig. 7;
9 is a diagram schematically showing a part of the structure of a data driving circuit and a panel according to an embodiment in a triple speed driving system.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a view schematically showing a display device according to an embodiment.

Referring to FIG. 1, a display device 100 includes a panel 110, a data driving circuit 120, a gate driving circuit 130, and a sensor driving circuit 140.

A plurality of data lines DL connected to the data driving circuit 120 are formed in the panel 110 and a plurality of gate lines GL connected to the gate driving circuit 130 may be formed. In addition, a plurality of pixels (P) corresponding to the intersections of the plurality of data lines DL and the plurality of gate lines GL may be defined in the panel 110.

In each pixel P, a first electrode (for example, a source electrode or a drain electrode) is connected to the data line DL, a gate electrode is connected to the gate line GL, and a second electrode , A drain electrode, or a source electrode) is connected to the display electrode.

In addition, a plurality of sensor electrodes (SE: Sensor Electrode) may be further formed on the panel 110. One pixel P may be located in a region where the sensor electrode SE is located and a plurality of pixels P may be located thereon.

The panel 110 may include a display panel (DP) and a touch panel (TSP), wherein the display panel (DP) and the touch panel (TSP) have. For example, the plurality of sensor electrodes SE may be a configuration of the display panel DP (for example, a common electrode for applying a common voltage) and at the same time, a configuration of the touch panel TSP For example). Such a panel 110 may be referred to as an integral panel in view of the fact that some components of the display panel DP and the touch panel TSP are shared with each other, but the present invention is not limited to such a name. In addition, an in-cell type panel is known in which some components of the display panel DP and the touch panel TSP are shared, but this is only an example of the panel 110 described above. The applied panel is not limited to such an in-cell type panel.

The data driving circuit 120 supplies the data voltage to the data line DL to display the digital image on each pixel P of the panel 110. [

The data driving circuit 120 may include at least one data driver integrated circuit. The data driver integrated circuit may be connected to a bonding pad of the panel 110 by a tape automated bonding (TAB) method or a chip on glass (COG) And may be formed integrally with the panel 110, as the case may be. In addition, the data driving circuit 120 may be implemented by a chip on film (COF) method.

The gate driving circuit 130 supplies a gate driving signal to the gate line GL to turn on or off the transistor located in each pixel P.

1, the gate drive circuit 130 may be located on one side of the panel 110, or on both sides of the panel 110, divided into two, as shown in FIG.

In addition, the gate drive circuit 130 may include at least one gate driver integrated circuit. The gate driver integrated circuit may be connected to a bonding pad of the panel 110 by a tape automated bonding (TAB) method or a chip on glass (COG) method, or may be implemented as a GIP (Gate In Panel) And may be formed integrally with the panel 110, as the case may be. Also, the gate driving circuit 130 may be implemented by a chip on film (COF) method.

The sensor driving circuit 140 applies a sensor driving signal to all or a part of a plurality of sensor electrodes SE connected to the sensing line SL.

1, the sensor driving circuit 140 has a configuration separate from the data driving circuit 120 and the gate driving circuit 130 and is provided outside the data driving circuit 120 and the gate driving circuit 130 The data driver circuit 120 may be implemented as an internal structure of another driver integrated circuit including at least one of the data driver circuit 120 and the gate driver circuit 130, Or the internal structure of the gate drive circuit 130 may be implemented. In some cases, the data driving circuit 120 and the gate driving circuit 130 are integrated into one integrated circuit, which is referred to as a touch display driver IC (TDDI). However, the present invention is limited to such a designation no.

The sensor driving circuit 140 applies a sensor driving signal to all or a part of the plurality of sensor electrodes SE when a separate driver integrated circuit including the sensor driving circuit 140 includes a plurality of It is also possible to apply a sensor driving signal to all or a part of the sensor electrode SE of the sensor. Depending on the design method, the data driving circuit 120 or the gate driving circuit 130 including the sensor driving circuit 140 applies the sensor driving signal to all or a part of the plurality of sensor electrodes SE You can see.

This sensor driving circuit 140 is not limited to the implementation and design method, and may be a different configuration itself or may be a configuration located inside or outside of another configuration, if the performance functions described herein are the same or similar to each other have.

1, one sensor driving circuit 140 is shown as being located in the display device 100, but the display device 100 may include two or more sensor driving circuits 140.

In order for the sensor driving circuit 140 to apply the sensor driving signal to all or a part of the plurality of sensor electrodes SE, a sensing line SL connected to each of the plurality of sensor electrodes SE is required. Accordingly, the sensing line SL, which is connected to each of the plurality of sensor electrodes SE and transmits the sensor driving signal, is connected to the panel 110 in a first direction (e.g., longitudinal direction) or a second direction (e.g., As shown in FIG. The sensing line SL may be a line that is separated from the data line DL or the gate line GL but the sensing line SL and the data line DL may be the same line or may be connected to the sensing line SL The gate line GL may be the same line.

On the other hand, the display device 100 may employ a capacitive touch method that recognizes the proximity or touch of an object by detecting a change in capacitance through the sensor electrode SE.

The electrostatic touch method can be divided into mutual touch method and self touch method, for example.

In the mutual capacitive touch method, which is one type of electrostatic touch method, a sensor driving signal is applied to one sensor electrode (Tx electrode) and another sensor electrode (Rx electrode) coupled to the Tx electrode is sensed. In the mutual capacitive touch method, the value sensed by the Rx electrode changes depending on the proximity or touch of an object such as a finger or a pen. In the mutual capacitive touch method, the presence or absence of a touch, touch coordinates .

In the self-capacitance touch method, which is another type of electrostatic touch method, a sensor driving signal is applied to one sensor electrode, and then the sensor electrode is sensed again. In the self-capacitance touch method, the value sensed by one sensor electrode is changed according to proximity or touch of an object such as a finger or a pen. In the self-capacitance touch method, the presence or absence of a touch do. In the self-capacitance touch method, there is no distinction between the Tx electrode and the Rx electrode because the sensor electrode for sensing the driving signal and the sensing electrode for sensing are the same.

The display device 100 may adopt one of the above two capacitive touch methods (mutual capacitive touch method, self-capacitance touch method), or employ a third touch method. In the present specification, for convenience of explanation, an embodiment will be described on the assumption that a self-capacitance touch method is employed.

On the other hand, the display device 100 can drive the sensor electrode SE without distinguishing the display section from the touch section. As one example, the display apparatus 100 may apply the sensor driving signal to a part of the sensor electrode SE in a time period of supplying the data voltage.

The display device 100 may be provided with a display driving area (DDA) and a touch driving area (TDA). The display drive region DDA and the touch drive region TDA may be set in a direction in which the data lines DL are arranged. In other words, the display drive region DDA and the touch drive region TDA do not share the data line DL with each other.

As a more specific example, when the data lines DL are arranged in the longitudinal direction (Y direction) of the panel 110 and the gate lines GL are arranged in the horizontal direction (X direction) of the panel 110, The display driving area DDA and the touch driving area TDA are separated from each other in the horizontal direction (X direction). For example, the display driving area DDA and the touch driving area TDA are located on the left and right sides in the horizontal direction Respectively. Accordingly, the gate line GL may be located in both the display driving area DDA and the touch driving area TDA, while the data line DL may be located in one of the display driving area DDA and the touch driving area TDA. Area.

The display device 100 divides the panel 110 in the arrangement direction (X direction) of the gate line GL and sets one region as the display drive region DDA to drive the display, (TDA). In terms of space, the display device 100 divides the area of the panel 110 to drive a part of the display, and touch-drives a part of the area. In terms of time, the display apparatus 100 simultaneously performs display driving and touch driving on the panel 110. [

The display apparatus 100 can drive the panel 110 by setting a part of the area as the display drive area DDA and the other part of the area as the touch drive area TDA in the first time period.

The display apparatus 100 can drive the pixel P of the corresponding region by supplying the data voltage to the data line DL located in the display drive region DDA in the first time period. The display device 100 may simultaneously drive the sensor electrode SE located in the corresponding region by supplying a sensor driving signal to the sensor electrode SE located in the touch driving region TDA.

At this time, the sensor driving signal is not supplied to the sensor electrode SE located in the display driving area DDA and the data voltage may not be supplied to the data line DL located in the touch driving area TDA . In this case, display driving and sensor driving can be performed without mutual interference.

In the second time period, the display device 100 can set the positions of the display drive area DDA and the touch drive area TDA different from the first time period. For example, a region set as the display drive region DDA in the first time period is set as the touch drive region TDA in the second time period, and a region set as the touch drive region TDA in the first time period In this second time period, the display driving area DDA can be set.

The display apparatus 100 sets the same area between the first time period and the second time period included in one frame as the display driving area DDA and the other as the touch driving area TDA, It becomes possible to drive both the pixel P and the sensor electrode SE which are positioned.

As shown in FIG. 1, the display driving area DDA and the touch driving area TDA may be positioned on the panel 110, respectively. However, according to an embodiment, the plurality of display driving areas DDA, The driving area TDA may be located.

FIG. 2 is a first exemplary view showing that a plurality of display driving areas and a plurality of touch driving areas are located on the panel of FIG. 1. FIG.

Referring to FIG. 2, a plurality of display driving areas DDA and a plurality of touch driving areas TDA may be disposed on the panel 110. FIG. At this time, the region set as the display drive region DDA in the first time period is set as the touch drive region TDA in the second time period, and the region set as the touch drive region TDA in the first time period is set as the And can be reset to the display driving area (DDA) in the two-time interval.

FIG. 3 is a second exemplary view showing that a plurality of display driving areas and a plurality of touch driving areas are located on the panel of FIG. 1. FIG.

Referring to FIG. 3, a plurality of display driving areas DDA and a plurality of touch driving areas TDA may be disposed on the panel 110. At this time, in one time frame within one frame, each region may be set as the display driving region (DDA) and the remaining time periods as the touch driving region (TDA).

For example, an area set in the display drive area DDA in the first time period may be set as the touch drive area TDA in the second time period and the third time period. An area set as the display drive region DDA in the second time period may be set as the touch drive region TDA in the third time period and the first time period.

In general, since the storage capacitor is located in the pixel P, the pixel P driven once can continuously maintain a constant brightness within one frame. Accordingly, once the display driving area DDA is set and driven in one frame of one frame, the display driving is not caused even if the display driving is set to the touch driving area TDA in the remaining time period.

4A and 4B are diagrams for explaining data lines and sensing line driving signals supplied to the display driving region and the touch driving region.

4A, a first area 410 of the panel 110 is set as the display driving area DDA and a second area 420 of the panel 110 is set as the touch driving area TDA in the first time period, Lt; / RTI >

A plurality of pixels P and a plurality of sensor electrodes SE may be located in the respective regions DDA and TDA. At this time, a plurality of pixels P may be located in a region where the sensor electrode SE is located, and a plurality of data lines DL may be located.

A data voltage may be supplied to the first data line DLa located in the display driving area DDA. Accordingly, the data voltage is transmitted to the pixel P located in the display driving region DDA.

A specific voltage may be supplied to the sensor electrode SE located in the display drive region DDA. Here, the specific voltage may be a ground voltage or a voltage having a specific level such as the common voltage Vcom or a voltage having no specific level such as a floating voltage (a voltage in a floating state).

According to the embodiment, the sensor electrode SE can be utilized as a common electrode in driving the display. In this embodiment, the common voltage Vcom may be supplied to the sensor electrode SE located in the display driving area DDA.

The data voltage Vdata and the common voltage Vcom supplied to the display drive region DDA may be supplied by a data driving circuit (see 120 in FIG. 1) or may be supplied by another circuit (for example, a power supply circuit IC). ≪ / RTI >

A touch support signal (TSS) may be supplied to the second data line DLb located in the touch driving area TDA. A sensor driving signal (TDS: Touch Driving Signal) may be supplied to the sensor electrode SE located in the touch driving area TDA. A parasitic capacitance is formed between the sensor electrode SE and the data line DL and the parasitic capacitance may act to lower the touch sensitivity. The touch assist signal TSS is a signal of the parasitic capacitance It is a signal to eliminate or minimize the effect. In general, the touch assist signal TSS may be a signal having the same phase as the sensor driving signal TDS, or may be a floating voltage or a ground voltage.

Referring to FIG. 4B, in the second time period, the first area 410 of the panel 110 may be set as the touch driving area TDA and the second area 420 may be set as the display driving area DDA .

The touch assist signal TSS is supplied to the first data line DLa located in the first region 410 and the touch sensing signal TSS is supplied to the sensor electrode SE located in the first region 410, A signal TDS can be supplied. In the second time period, the data voltage Vdata may be supplied to the second data line DLb located in the second region 420 and the common voltage Vcom may be supplied to the sensor electrode SE.

On the other hand, although not shown in the figure, the data line DL located in the touch-driving area DDA can be floated. Here, floating of the data line DL is understood to be substantially the same as supplying the floating voltage to the touch assist signal TSS in the above description.

5 is a view for explaining a gate driving signal supplied to the display driving region and the touch driving region.

Referring to FIG. 5, a first gate line GLa and a second gate line GLb may be disposed on the panel 110. In FIG. Here, the first gate line GLa may be connected to the pixel P located in the first region 410 and the second gate line GLb may be connected to the pixel P located in the second region 420 have.

The first area 410 may be set as the display driving area DDA and the second area 420 may be set as the touch driving area TDA in the first time period.

The gate ON signal GS_ON is supplied to the first gate line GLa connected to the pixel P located in the display driving region DDA in the first time period and the gate- And a gate off signal GS_OFF may be supplied to the second gate line GLb connected to the gate P of the first transistor Q1.

The first region 410 may be set as the touch driving region TDA and the second region 420 may be set as the display driving region DDA in the second time period.

The gate off signal GS_OFF is supplied to the first gate line GLa connected to the pixel P located in the touch driving area TDA in the second time period and the gate- The gate-on signal GS_ON may be supplied to the second gate line GLb connected to the gate P of the first transistor Q1.

According to the gate line connection structure and the gate signal driving method, the gate off signal GS_OFF can be supplied to the pixel P located in the touch driving area TDA. When the gate off signal GS_OFF is supplied to the pixel P, the pixel P is isolated from the data line DL and is not affected by the voltage formed on the data line DL.

The sensor driving signal is supplied to the sensor electrode SE located in the touch driving area TDA and the voltage generated in the data line DL does not affect the pixel P, Or may be supplied with a touch assist signal TSS to the data line DL.

On the other hand, the data driving circuit can drive the data line DL with a double-speed driving method (DRD: Double Rated Driving). In the double-speed drive system (DRD), the data line (DL) is driven at twice the speed, so that two data lines (DL) can be driven in a time division manner by one channel. For example, the data driver circuit may connect the first data line and the second data line to one channel, drive the first data line in the first time interval, and drive the second data line in the second time interval .

According to this double-speed driving method, when a data voltage is supplied to one data line connected to a channel, the other data line may not be used for driving a display. The data driving circuit according to an embodiment can touch-drive an area where a data voltage is not supplied in the double-speed driving method (DRD), that is, an area where a data line not used for display driving is located.

6A and 6B are first exemplary views schematically showing a part of the configuration of a data driving circuit and a panel according to an embodiment in a double speed driving method.

Referring to FIGS. 6A and 6B, the first region 410 and the second region 420 may be positioned on the panel 110. The first data line DLa is located in the first area 410 and the first data line DLa and the first gate line GLa are disposed in the pixel area P in the first area 410 Can be connected. The second data line DLb is located in the second region 420 and the second data line DLb and the second gate line GLb are disposed in the second region 420. [ Can be connected.

The data driving circuit 120 can selectively supply a data voltage to the first data line DLa located in the first region 410 and the second data line DLb located in the second region 420 .

The first area 410 of the panel 110 in the first time period may be set as the display driving area DDA and the second area 420 may be set as the touch driving area TDA. In the second time period, the first area 410 of the panel 110 may be set as the touch driving area TDA and the second area 420 may be set as the display driving area DDA.

The data driving circuit 120 supplies the data voltage to the first data line DLa located in the display drive region DDA in the first time period and supplies the data voltage to the second data line DLa located in the display drive region DDA in the second time period. And the data voltage can be supplied to the data line DLb.

The data driving circuit 120 may include a switching unit (MUX) for selecting the first data line DLa and the second data line DLb. The switching unit MUX may be connected to the first data line DLa and the second data line DLb. The data driving circuit 120 supplies the data voltage to the first data line DLa located in the display driving region DDA in the first time period through the switching unit MUX, And the data voltage can be supplied to the second data line DLb located in the region DDA.

The data driving circuit 120 may include an output buffer 510. The output buffer 510 may be connected to the first data line DST located in the display driving region DDA in the first time period via the switching unit MUX DLa to supply the data voltage to the second data line DLb located in the display drive region DDA in the second time period. At this time, the data line to which the data voltage is not supplied may be in a floating state.

7 is a second exemplary view schematically showing a part of the configuration of a data driving circuit and a panel according to an embodiment in a double speed driving method.

Referring to FIG. 7, the first region 410 and the second region 420 may be positioned on the panel 110. FIG. The first data line DLa is located in the first area 410 and the first data line DLa and the first gate line GLa are disposed in the pixel area P in the first area 410 Can be connected. The second data line DLb is located in the second region 420 and the second data line DLb and the second gate line GLb are disposed in the second region 420. [ Can be connected.

The data driving circuit 120 can selectively supply a data voltage to the first data line DLa located in the first region 410 and the second data line DLb located in the second region 420 .

The switching unit MUX located in the data driving circuit 120 may be connected to the output buffer 510 and the touch support voltage source to the input side and to the first data line GLa and the second data line GLb to the output side have.

The first area 410 of the panel 110 in the first time period may be set as the display driving area DDA and the second area 420 may be set as the touch driving area TDA. In the second time period, the first area 410 of the panel 110 may be set as the touch driving area TDA and the second area 420 may be set as the display driving area DDA.

In the first time interval, the switching unit MUX may supply the data voltage to the first data line DLa and the touch support voltage TSS to the second data line DLb. In the second time interval, the switching unit MUX may supply the touch voltage TSS to the first data line DLa and the data voltage to the second data line DLb.

On the other hand, one display driving area DDA includes a plurality of data lines DL or a plurality of pixel columns, in which a pixel column is connected to one data line, can do. As a specific example, N (N is a natural number of 2 or more) data lines DL or N pixel columns may be located in the display driving area DDA. The first data line DLa and the second data line DLb are connected to a part of the panel 110 by a double-speed driving method (DRD) in which two data lines are connected to one output buffer 510, (For example, a link wiring area).

The first data line DLa or the second data line DLb may be positioned over two or more layers in the panel 110 in order to prevent the data lines from overlapping each other in the cross portion A. [

8 is a cross-sectional view of the panel for the data line cross portion of Fig. 7;

Referring to FIG. 8, the first data line DLa is a layer penetrating a passivation layer (PL) in a data line layer (DLL) to avoid overlap with the second data line DLb And is connected to a data line layer (DLL) via another via hole that is connected to a gate line layer (GLL) through a via hole and another via a passivation layer (PL) .

6 to 8, the present invention is applied to a double speed driving system (TRD: Triple Rated Driving) or M (M is a natural number of 4 or more) double speed driving system .

9 is a diagram schematically showing a part of the structure of a data driving circuit and a panel according to an embodiment in a triple speed driving system.

Referring to FIG. 9, a first region 910, a second region 920, and a third region 930 may be located on the panel 110. The first data line DLa is located in the first region 910 and the first data line DLa and the first gate line GLa are disposed in the pixel P located in the first region 410 Can be connected. The second data line DLb is located in the second region 920 and the second data line DLb and the second gate line GLb are disposed in the pixel region P in the second region 920 Can be connected. The third data line DLc is located in the third region 930 and the third data line DLc and the third gate line GLc are located in the third region 930 Can be connected.

The data driving circuit 120 includes a switching part MUX and is disposed in the first data line DLa and the second area 920 located in the first area 910 through the switching part MUX The second data line DLb and the third data line DLc located in the third region 930. In this case,

The first area 910 of the panel 110 in the first time period may be set as the display drive area DDA and the second area 920 and the third area 930 may be set as the touch drive area TDA have. The second area 920 of the panel 110 is set as the display driving area DDA and the third area 930 and the first area 910 are set as the touch driving area TDA in the second time period. . The third region 930 of the panel 110 in the third time period is set as the display drive region DDA and the first region 910 and the second region 920 are set as the touch drive region TDA .

The data driving circuit 120 may include an output buffer 510. The output buffer 510 may be connected to the first data line (D) located in the display driving area DDA in the first time period via the switching unit Supplies the data voltage to the second data line DLa located in the display drive region DDA in the second time period and supplies the data voltage to the second data line DLb located in the display drive region DDA in the third time period, And the data voltage can be supplied to the third data line DLb.

At this time, a sensor driving signal may be supplied to the sensor electrode SE located in the touch-driving area TDA to which the data voltage is not supplied.

Although not shown in the drawing, the touch driving circuit (refer to 140 in FIG. 1) includes a second region 920 corresponding to the touch driving region TDA in the first time period and a second region 920 corresponding to the sensor electrode SE to receive the response signal and to receive the response signal from the sensor electrode SE located in the third region 930 and the first region 910 corresponding to the touch drive region TDA in the second time period, And a sensor electrode SE positioned in the first region 910 and the second region 920 corresponding to the touch driving region TDA in the third time period, And an analog front end for supplying a driving signal and receiving a reaction signal. The touch driver circuit 140 may include a signal processor for sensing the proximity or touch of the external object to the panel 110 using the response signal received at the analog front end.

6 to 9, the switching unit MUX may be located in the panel 110, the data driving circuit 120 may be disposed in the data driving circuit 120, And the panel 110, as shown in FIG.

As described above, according to the embodiment of the present invention, the display driving and the touch driving can be performed simultaneously in some time periods or all the time periods, thereby increasing the time for the touch driving in one frame . When the time for the touch driving is increased, the touch sensitivity is increased.

In addition, according to the above-described embodiments, the panel can be spatially divided to perform display driving and touch driving at the same time. At this time, since the data voltage is not supplied to the data line in the area for driving the touch There is an effect that the data voltage does not affect the touch driving. In addition, since the touch-assist signal can be supplied to the data line located in the touch-driving area, the touch sensitivity can be increased.

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (6)

Wherein the data voltage is supplied to the first data line and the second data line, the first data line supplying the data voltage to the first data line and the second data line supplying data voltage to the second data line A drive circuit; And
Supplying a sensor driving signal to a second sensor electrode corresponding to a position of the second data line in the first time period and driving the sensor to a first sensor electrode corresponding to a position of the first data line in the second time period And a sensor driver circuit for supplying a signal.
Data for driving the first data line and the second data line with respect to a panel in which the first data line and the first sensor electrode are located in the first area and the second data line and the second sensor electrode are located in the second area, In the driving circuit,
A switching unit selectively connected to the first data line and the second data line; And
A data voltage is supplied to the first data line through the switching unit in a first time period in which a sensor driving signal is supplied to the second sensor electrode, and in a second time period in which a sensor driving signal is supplied to the first sensor electrode And an output buffer unit for supplying a data voltage to the second data line through the switching unit.
A sensor for driving the first sensor electrode and the second sensor electrode with respect to a panel in which the first data line and the first sensor electrode are located in the first region and the second data line and the second sensor electrode are located in the second region, In the driving circuit,
A second time period in which a data voltage is supplied to the first data line and a sensor driving signal is supplied to the second sensor electrode in a first time period in which a data voltage is supplied to the first data line, An analog front end for supplying a sensor driving signal to the first sensor electrode and receiving a reaction signal; And
And a signal processor for sensing the proximity or touch of an external object to the panel using the response signal received at the analog front end.
A panel in which the first data line group and the first sensor electrode group are located in the first region and the second data line group and the second sensor electrode group are located in the second region; And
And a panel driving circuit for driving the first region in a first time interval and driving the second region in a sensor driving manner, driving the first region in a second time interval and driving the second region in a display drive Device.
The data voltage is supplied to the first data line, the second data line and the third data line, the first data line supplying the data voltage to the first data line, the second data line supplying data voltage to the second data line, A data driving circuit for supplying a data voltage to the third data line at a third time slot; And
Supplying a sensor driving signal to a second sensor electrode corresponding to a position of the second data line in the first time period and a third sensor electrode corresponding to a position of the third data line, A third sensor electrode corresponding to a position of the third data line and a first sensor electrode corresponding to a position of the first data line, and supplies a sensor driving signal to the first sensor electrode corresponding to the position of the first data line in the third time period And a sensor driving circuit for supplying a sensor driving signal to a first sensor electrode and a second sensor electrode corresponding to a position of the second data line.
Wherein the first data line and the first sensor electrode are located in the first region, the second data line and the second sensor electrode are located in the second region, the third data line and the third sensor electrode are located in the third region, The data driver circuit driving the first data line, the second data line, and the third data line with respect to the data line,
A switching unit connected to one of the first data line, the second data line and the third data line; And
And supplies a data voltage to the first data line through the switching unit in a first time period in which a sensor driving signal is supplied to the second sensor electrode and the third sensor electrode, Wherein the first sensor electrode and the second sensor electrode supply a data voltage to the second data line through the switching unit in a second time period when the sensor driving signal is supplied to the first sensor electrode and the second sensor electrode, And an output buffer unit for supplying a data voltage to the third data line through the switching unit.

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