KR20170126351A - In cell type display panel and in cell type display apparatus using the same - Google Patents

Abstract

The purpose of the present invention is provide an in-cell type display panel where each of two touch electrodes adjacent to each other along at least one boundary gate line is arranged to overlap with the boundary gate line, and an in-cell type display device using the same. To this end, the in-cell display panel according to the present invention includes data lines to which a data voltage is supplied, gate lines to which a gate pulse is supplied, touch electrodes which are independently arranged, and touch lines which is electrically connected to any one among the touch electrodes and are arranged in parallel with the data lines. Each of the two touch electrodes adjacent to each other along the at least one boundary gate line among the gate lines is arranged to overlap with the boundary gate line. Accordingly, the present invention can prevent an image failure of a transverse line type between the touch electrodes.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an in-cell type display panel and an in-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display panel, and more particularly to an in-cell type display panel having a touch panel built therein and an in-cell type display device using the same.

The touch panel is installed in a display device such as a liquid crystal display device (LCD), an organic light emitting display device (OLED) and an electrophoretic display device (EPD) And is a kind of an input device that allows information to be input by directly touching the screen with a finger or a pen while viewing the display device.

A method of manufacturing a display device having a touch panel includes an in-cell method in which a touch panel is embedded in a display panel for outputting an image. A display device using an in-cell type display panel is referred to as an in-cell type display device.

FIG. 1 is a diagram illustrating a configuration of a conventional in-cell type display device, and FIG. 2 is a diagram illustrating waveforms of signals applied to a conventional in-cell type display device. In FIG. 2, the waveform indicated by the Nomal Model represents the waveform of the common voltage in the general display panel, not the in-cell type.

The in-cell type display panel can be classified into a self-cap type and a mutual type. 1, an inserting type display panel 10 using a self-capping method is shown. A plurality of touch electrodes 12 are arranged in the display area 11 of the in-cell type display panel 10 using the self cap method.

The touch electrodes 12 are supplied with a touch driving signal or a common voltage from a driver IC 30 attached to the flexible printed circuit board 50.

In the video display period, the touch electrodes 12 are supplied with a common voltage through the touch lines 13. [ During the touch sensing period, the touch driving signals are supplied to the touch electrodes 12 through the touch lines 13. During the video display period, the driver IC 30 supplies the data voltages to the data lines DL1 to DLd included in the in cell type display panel 10. [

The touch lines 13 are electrically connected to any one of the touch electrodes 12 as shown in FIG.

In this case, coupling occurs between the gate line and the common electrode at the rising and polling times of the gate pulse sequentially supplied to the gate lines. This phenomenon can be applied to only one common electrode.

Therefore, as shown in FIG. 2, the first common voltage Vcom # 1 to be polled as the n-1th gate pulse GPn-1 is polled is the same as the first common voltage Vcom # Can be offset by one. Here, the (n-1) th gate pulse GPn-1 is a gate pulse supplied to the (n-1) th gate line Gn-1 and the first common voltage Vcom # And the n-th gate pulse GPn is a gate pulse supplied to the n-th gate line GLn, which is superposed on the first common electrode 61.

However, as shown in Y of FIG. 2, the first common voltage Vcom # 1 polled as the n-th gate pulse GPn is polled is turned on when the (n + 1) -th gate pulse GPn + It is not canceled by that. Here, the n-th gate pulse GPn is a gate pulse supplied to the n-th gate line GLn, the first common voltage Vcom # 1 is a common voltage supplied to the first common electrode 61, The first gate pulse GPn + 1 is a gate pulse supplied to the (n + 1) th gate line GLn + 1, which is superimposed on the second common electrode 62.

The reason for the above phenomenon is that the first common electrode 61 and the second common electrode 62 are separated from each other so that the first common electrode 61 is connected to the first gate line of the second common electrode 62 The coupling between the first common electrode 61 and the first gate line GLn + 1 of the second common electrode 62 is not generated.

As a result, a level difference of the coupling signal is generated in the common electrodes which are separated from each other, and the level of the common voltage becomes unstable due to this level difference. As a result, the Vrms value changes, and therefore, a bright horizontal line-shaped image defect occurs when the pixel is charged.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide an Insel-type display panel and a method of fabricating the same, in which each of two touch electrodes adjacent to each other along at least one boundary gate line, Type display device using the in-cell type display device.

According to an aspect of the present invention, there is provided an in-cell type display panel including at least one of data lines to which a data voltage is supplied, gate lines to which gate pulses are supplied, independently arranged touch electrodes, And touch lines arranged in parallel with the data lines.

Each of the two touch electrodes adjacent to each other along at least one boundary gate line among the gate lines is disposed to overlap the boundary gate line.

Each of the opposing surfaces of the two touch electrodes adjacent to each other along the boundary gate line is composed of a plurality of protrusions and a plurality of depressions.

Protrusions of one of the two touch electrodes are inserted into depressions of another touch electrode. Protrusions of another touch electrode are inserted into depressions of one of the two touch electrodes.

The boundary gate line is disposed across the protrusions and the depressions. Each of the touch lines is overlapped with the corresponding data line.

The insell type display panel further includes dummy lines overlapping the data lines and arranged in parallel with the touch lines. Each of the dummy lines is electrically connected to one of the touch electrodes. Each of the touch electrodes is connected to at least one of the dummy lines.

Each of the opposing surfaces of the two touch electrodes adjacent to each other along the boundary gate line is composed of a plurality of protrusions and a plurality of depressions, and the protrusions of one of the two touch electrodes The protrusions of another touch electrode are inserted into depressions of one of the two touch electrodes, and the dummy line extends to the protrusion.

The dummy line is connected to the touch electrode in at least one pixel overlapping the protrusion.

According to another aspect of the present invention, there is provided an in-cell type display device including an in-cell type display panel, a gate driver sequentially outputting gate pulses, A touch driver for supplying a common voltage to the touch electrodes during a video display period, and a data driver for outputting a data voltage. In this case, the Insel type display panel is electrically connected to any one of data lines to which a data voltage is supplied, gate lines to which gate pulses are supplied, touch electrodes that are independently arranged, and the touch electrodes, And touch lines disposed in parallel with the data lines. Each of the two touch electrodes adjacent to each other along at least one boundary gate line among the gate lines is disposed to overlap the boundary gate line.

According to the present invention, in the self-cap type in-cell type display panel in which the common electrode is divided, a horizontal line-shaped image defect does not occur between the touch electrodes adjacent to each other along the gate line.

1 is an exemplary view showing a configuration of a conventional in-cell type display device.
2 is a diagram illustrating waveforms of signals applied to a conventional in-cell type display device.
Fig. 3 is an exemplary view schematically showing a configuration of an in-cell type display device according to the present invention; Fig.
4 is a view showing an example of a part of an in-cell type display panel according to a first embodiment of the present invention.
5 is an exemplary view showing a portion of an in-cell type display panel according to a second embodiment of the present invention;
6 is a view showing an example of a portion of an in-cell type display panel according to a third embodiment of the present invention;
7 is an exemplary view showing a part of an in-cell type display panel according to a fourth embodiment of the present invention;
8 is a diagram illustrating waveforms of signals applied to an in-cell type display device according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. To fully disclose the scope of the invention to a person skilled in the art, and the invention is only defined by the scope of the claims.

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In the case where the word 'includes', 'having', 'done', etc. are used in this specification, other parts can be added unless '~ only' is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if the temporal relationship is described by 'after', 'after', 'after', 'before', etc., May not be continuous unless they are not used.

The term " at least one " should be understood to include all possible combinations from one or more related items. For example, the meaning of 'at least one of the first item, the second item and the third item' means not only the first item, the second item or the third item, but also the second item, the second item and the third item, Means any combination of items that can be presented from more than one.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is an exemplary view schematically showing a configuration of an in-cell type display device according to the present invention.

As shown in FIG. 3, the in-cell type display device according to the present invention includes an in-cell type display panel 100, a gate driver 200 for sequentially outputting gate pulses, A touch driver for supplying a touch driving signal to the touch electrodes, a touch driver for supplying a common voltage to the touch electrodes during an image display period, a data driver for outputting a data voltage, And a control driver (400) for controlling the driver.

First, the in cell type display panel 100 includes data lines DL1 to DLd to which the data voltages are supplied, gate lines GL1 to GLg to which the gate pulses are supplied, TE, and touch lines TL arranged to overlap with the data lines DL1 to DLd. The in cell type display panel 100 may further include dummy lines overlapping the data lines DL1 to DLd and arranged in parallel with the touch lines TL.

Each of the touch electrodes TE overlaps at least one of the gate lines, at least one of the data lines, and at least one of the touch lines, and may overlap with at least one of the dummy lines.

Each of the touch lines TL is electrically connected to one of the touch electrodes disposed along the data lines. The touch line TL is electrically connected to the touch electrode TE through a touch contact TP.

When the in cell type display panel 100 is a liquid crystal panel, the data lines DL1 to DLd, the gate lines GL1 to GLg ), Pixels defined by the data lines DL1 to DLd and the gate lines GL1 to GLg, and the touch electrodes TE are provided, and the second substrate CF is provided with color filters and black matrixes And a liquid crystal is injected between the first substrate and the second substrate. The color filter may be provided on the first substrate. Each of the pixels is provided with a thin film transistor (TFT) and a pixel electrode for driving the liquid crystal along with the touch electrode TE. For example, the pixels are arranged in a matrix form by an intersection structure of the data lines DL1 to DLd and the gate lines GL1 to GLg, and each of the pixels includes the thin film transistor, And a touch electrode unit constituting the touch electrode TE.

However, the in-cell type display panel 100 may be formed in various types and shapes other than the liquid crystal panel.

As the touch electrode TE, a touch driving signal is supplied during a touch sensing period, and a common voltage is supplied during an image display period. Therefore, the touch electrode also functions as a common electrode.

The touch electrodes TE are provided in the display region 110 of the in cell type display panel 100.

The touch electrodes TE are driven by self-capping.

For example, the touch electrode TE is charged with a voltage by a current or voltage supplied from the touch driver. The voltage charged in the touch electrode TE is discharged over time.

When the user's finger touches the touch electrode TE, the time or amount of discharge of the charging voltage is such that when the user's finger is not in contact with the touch electrode TE, It differs from discharge time or discharge amount.

Accordingly, the presence or absence of a touch or the touch position in the in-cell type display panel 100 can be detected through analysis of a change amount of the time during which the charge voltage is discharged or a change amount of the amount by which the charge voltage is discharged.

The touch driver supplies current or voltage to the touch electrodes TE through the touch lines TL and senses the sensing signals TE transmitted from the touch electrodes TE through the touch lines TL. Lt; / RTI >

The touch driver may analyze the sensing signals to directly determine whether the touch panel 100 has a touch or not. However, the process of determining whether or not the touch is performed on the in-cell type display panel 100 may be performed by another component.

Second, the gate driver 200 sequentially outputs gate pulses to the gate lines GL1 to GLg.

The gate driver 200 shifts a gate start pulse (GSP) transmitted from the control driver 400 according to a gate shift clock (GSC) and sequentially shifts the gate lines GL1 0.0 > GLg < / RTI > with a gate-on voltage Von.

The gate driver 200 supplies the gate off voltage Voff to the gate lines GL1 to GLg for the remaining period when the gate pulse having the gate on voltage Von is not supplied.

The gate driver 200 may be formed in an integrated circuit (IC), and then mounted in a non-display area formed on the outer side of the display area 110 among the in-cell type display panels 100.

The gate driver 200 may be connected to the gate lines GL1 to GLg, the data lines DL1 to DLd, the touch electrodes TE, the touch lines TL, DL). ≪ / RTI > For example, the gate driver 200 may be embedded in the in-cell type display panel 100. This type of gate driver 200 is referred to as a gate-in-panel (GIP) type gate driver.

As shown in FIG. 3, the gate driver 200 may be disposed only in one of the non-display areas of the invisible display panel 100, but two non- Regions, respectively.

Thirdly, the touch driver supplies a touch driving signal to the touch sensors (TE) provided in the in-cell type display panel 100 between the touch sensors. In the video display period, the touch electrodes .

Fourth, the data driver outputs the data voltage to the data lines DL1 to DL1.

The touch driver and the data driver may be independently configured and then mounted on the in-cell type display panel 100.

However, the touch driver and the data driver may be configured as one driver and then mounted on the in-cell type display panel 100. 3, a driving driver 300 having the touch driver and the data driver integrated therein is shown as an example of the present invention.

The driving driver 300 is connected to the touch lines TL and the data lines DL1 to DLd.

The driving driver 300 supplies data voltages to the data lines DL1 to DLd during a video display period and supplies a common voltage to the touch electrodes.

The driving driver 300 supplies a touch driving signal to the touch electrodes TE through the touch lines TL and transmits the touch driving signals from the touch electrodes TE through the touch lines TL Lt; / RTI > Also, the driving driver 300 may determine whether the touch panel 100 has a touch or a touch using the sensing signals. In this case, the function of determining whether or not there is touch or the touch position may be executed in another component.

The driving driver 300 may be an integrated circuit (IC). In this case, the driving driver 300 may be mounted on the flexible film 500, and the flexible film 500 may be mounted on the incentive type display panel 100. The driving driver 300 may be electrically connected to the data lines DL1 to DLd and the touch lines TL through the flexible film 500. [

However, the driving driver 300 may be mounted directly on the in-cell type display panel 100. [

Fifth, the control driver 400 controls the gate driver 200, the data driver, and the touch driver. When the data driver and the touch driver are included in the driving driver 300, the control driver 400 may control the functions of the driving driver 300.

The control driver 400 may be mounted on the printed circuit board 600. In this case, the flexible film 500 is attached to the in-cell type display panel 100 and the printed circuit board 600. The control driver 400 may be electrically connected to the driving driver 300 through the flexible film 500.

4 is a view illustrating a part of the in-cell type display panel according to the first embodiment of the present invention. Particularly, the first touch electrode TE1 and the second touch electrode TE2 shown in FIG. Fig.

3 and 4, the in-cell type display panel 100 according to the first embodiment of the present invention includes data lines DL1 to Dld to which a data voltage is supplied, The touch lines TL which are electrically connected to one of the gate lines GL1 to GLg, the independently arranged touch electrodes TE and the touch electrodes, and arranged in parallel with the data lines, .

In the following description, as shown in FIGS. 3 and 4, the present invention is described by taking two touch electrodes adjacent to each other as an example. The touch electrode disposed at the upper end of at least one gate line (hereinafter simply referred to as a boundary gate line) GLn disposed between the two touch electrodes among the two touch electrodes is a first touch electrode TE1 ), And the touch electrode disposed at the lower end of the boundary gate line GLn is referred to as a second touch electrode TE2.

The touch line connected to the first touch electrode TE1 is referred to as a first touch line TL1 and the touch line connected to the second touch electrode TE2 is referred to as a second touch line (TL2).

Here, each of the two touch electrodes TE1 and TE2 adjacent to each other along at least one boundary gate line GLn of the gate lines GL1 to GLg is overlapped with the boundary gate line GLn .

Each of the touch electrodes TE includes at least two of the gate lines GL, at least two of the data lines DL and at least one of the touch lines GL, TL).

Here, each of the touch lines is overlapped with the corresponding data line. For example, the first touch line TL1 may be arranged to overlap the data line with an insulator therebetween, and may be disposed in parallel with the data line. Also, the second touch line TL2 may be arranged to overlap with another data line with an insulator therebetween, and may be arranged in parallel with the another data line.

The two touch electrodes adjacent to each other along the boundary gate line GLn, that is, the opposing surfaces of the first touch electrode TE1 and the second touch electrode TE2 are formed in a sawtooth pattern . Each of the sawtooth patterns includes a plurality of protrusions and a plurality of depressions.

For example, the first sawtooth pattern 710 formed on the first touch electrode TE1 may include first protrusions 711 and first depressions 711, as shown in the K region of FIGS. 3 and 4 712).

The second sawtooth pattern 720 formed on the second touch electrode TE2 includes the second protrusions 721 and the second depressions 722 as shown in the K region of FIGS. do.

Protrusions of one of the two touch electrodes are inserted into depressions of another touch electrode and protrusions of another touch electrode are formed in depressions of one of the two touch electrodes .

For example, the first projections 711 of the first sawtooth pattern 710 provided on the first touch electrode TE1 may be formed on the second sawtooth pattern TE1 provided on the second touch electrode TE2, 720 are inserted into the second depressions 722 of the first touch pattern TE1 and the first depressions 712 of the first touch pattern 710 provided on the first touch electrode TE1, The second protrusions 721 of the second tooth pattern 720 provided on the electrode TE2 are inserted.

The boundary gate line GLn is disposed across the protrusions and the depressions.

3 and 4, the boundary gate line GLn provided at the boundary between the first touch electrode TE1 and the second touch electrode TE2 is electrically connected to the first touch electrode TE1, The first protrusions 711 and the first depressions 712 of the electrode and the second protrusions 721 and the second depressions 722 of the second touch electrode are disposed so as to cross the first protrusions 711 and the first depressions 712, do.

3 and 4, the first protrusions 711 and the first depressions 712 of the first touch electrode, the second protrusions 721 of the second touch electrode 721, And one of the boundary gate lines GLn crossing the second depressions 722 are illustrated, but two or more of the boundary gate lines may be arranged to cross the protrusions and the depressions.

One unit touch electrode UTE constituting the first touch electrode TE1 may correspond to one pixel constituting the in cell type display panel 100. [

For example, in FIG. 4, the first touch electrode TE1 may be composed of the unit touch electrodes UTE corresponding to one pixel, and the second touch electrode TE1 may be composed of one unit pixel And may be composed of another corresponding unit touch electrodes UTE.

In this case, the first touch electrode line TL1 may be arranged so as to overlap the data line with an insulator interposed therebetween, and may be disposed in parallel with the data line. Also, the second touch line TL2 may be arranged to overlap with another data line with an insulator therebetween, and may be arranged in parallel with the another data line.

One unit touch electrode UTE constituting the first touch electrode TE1 may correspond to at least two or more pixels.

For example, in FIG. 4, the unit touch electrode UTE may be arranged to correspond to red, green, and blue pixels.

In this case, three data lines may be overlapped on each unit touch electrode UTE. When the unit touch electrode UTE overlaps the first touch electrode line TL1 and the three data lines, any one of the three data lines may be connected to the first touch electrode line TL1, Can be overlapped side by side. When the unit touch electrode UTE overlaps the second touch electrode line TL2 and three data lines, any one of the three data lines may be connected to the second touch electrode line TL2, As shown in FIG.

However, the unit touch electrode UTE may be arranged to correspond to four or more pixels.

Also, FIG. 4 shows an in-cell type display panel in which one unit touch electrode UTE is arranged to correspond to one gate line. However, at least two gate lines may correspond to one unit touch electrode UTE.

In this case, at least two boundary gate lines may be arranged to traverse the protrusions and the depressions.

The first touch line TL1 is arranged to overlap with the first touch electrode TE1 and the second touch electrode TE2. In this case, the first touch line TL1 is electrically connected to the first touch electrode TE1 in at least one pixel. 4 shows an in-cell type display panel in which the first touch line TL1 is electrically connected to the first touch electrode TE1 at every pixel. However, the first touch line TL1 includes at least one And may be electrically connected to the first touch electrode TE1 at the pixel.

The first touch line TL1 is not electrically connected to the second touch electrode TE2. The first touch line TL1 overlaps with another touch electrodes disposed along the first touch line TL1 but is not electrically connected to the other touch electrodes TL1.

The first touch line TL1 is disposed in parallel with the data line and overlapped with the data line with an insulator interposed therebetween. In the non-display area, It is electrically connected to the driver.

The second touch line TL2 is not overlapped with the first touch electrode TE1 but is overlapped with the second touch electrode TE1 and electrically connected only to the first touch electrode TE2 . 4 shows an in-cell type display panel in which the second touch line TL2 is electrically connected to the second touch electrode TE2 at every pixel. However, the second touch line TL2 includes at least one Pixel may be electrically connected to the second touch electrode TE2.

The first touch line TL1 overlaps with another touch electrodes disposed along the first touch line TL1 but is not electrically connected to the other touch electrodes TL1.

The first touch line TL1 is disposed in parallel with the data line and overlapped with the data line with an insulator interposed therebetween. In the non-display area, It is electrically connected to the driver.

5 is a view illustrating a portion of an in-cell type display panel according to a second embodiment of the present invention. Particularly, the first and second touch electrodes TE1 and TE2 shown in FIG. Fig. In the following description, the same or similar contents as those described in the first embodiment are omitted or briefly described.

As in the first embodiment, the insensitive display panel according to the second embodiment of the present invention includes data lines DL1 to Dld to which data voltages are supplied, gate lines GL1 to GLg to which gate pulses are supplied, And touch lines (TL) electrically connected to any one of the touch electrodes (TE) and the touch electrodes arranged independently and arranged in parallel with the data lines. Here, each of two touch electrodes adjacent to each other along at least one boundary gate line among the gate lines is arranged to be overlapped with the boundary gate line. Each of the opposing surfaces of the two touch electrodes adjacent to each other along the boundary gate line is composed of a plurality of protrusions and a plurality of depressions, and the protrusions of one of the two touch electrodes And protrusions of another touch electrode are inserted into depressions of one of the two touch electrodes. The boundary gate line is disposed across the protrusions and the depressions. Each of the touch lines is overlapped with the corresponding data line.

In particular, in the in-cell type display panel according to the second embodiment of the present invention, the touch line overlaps with all the touch electrodes overlapping the data lines overlapping with the touch line.

For example, in the first embodiment, the second touch line TL2 is not overlapped with the first touch electrode TE1. However, in the second embodiment, the second touch line TL2 also extends to the first touch electrode TE1 and overlaps with the first touch line TL1. In this case, the second touch line TL2 is not electrically connected to the first touch electrode TL1.

Each of the other touch lines is disposed so as to overlap with all of the pixels arranged from the upper end to the lower end of the in-cell type display panel.

By the above-described structure, the characteristics of the touch electrodes can be made uniform, and thus the characteristics of the common voltage can be made uniform, and therefore, the image quality can be improved.

6 is a view illustrating a portion of an in-cell type display panel according to a third embodiment of the present invention. Particularly, the first touch electrode TE1 and the second touch electrode TE2 shown in FIG. Fig. In the following description, the same or similar contents as those described in the first embodiment and the second embodiment are omitted or briefly described.

The in-cell type display panel according to the third embodiment of the present invention basically includes all the features described in the second embodiment.

Particularly, the incentive type display panel according to the third embodiment of the present invention further includes dummy lines overlapping the data lines and arranged in parallel with the touch lines.

Each of the dummy lines is electrically connected to one of the touch electrodes, and each of the touch electrodes is connected to at least one of the dummy lines.

For example, the first dummy line DL1 is overlapped with the first touch electrode TE1 and overlapped with the first touch line TL1, and overlapped with the first touch electrode TE1, And is overlapped with any one of the data lines overlapping the first touch electrode TE1 with an insulator interposed therebetween. In this case, the first dummy line DL1 is electrically connected to the first touch electrode TE1.

The second dummy line DL2 overlaps with the data lines overlapping with the second touch electrode TE2 in parallel with the second touch line TL2 and overlapping with the second touch electrode TE2, And overlaps with any one of the data lines overlapping the second touch electrode TE2 with an insulator interposed therebetween. In this case, the second dummy line DL2 is electrically connected to the second touch electrode TE2.

Particularly, in the third embodiment, the first dummy line DL1 is electrically connected to the first touch electrode TE1 in one pixel, and the second dummy line DL2 is electrically connected to the first touch electrode TE1 in one pixel, 2 touch electrode TE2. In this case, the first dummy line DL1 may be electrically connected to the first touch electrode TE1 at a pixel overlapping the first protrusion 711, and the second dummy line DL2 may be electrically connected to the first touch electrode TE1, And may be electrically connected to the second touch electrode TE2 at a pixel overlapping the second protrusion 721. [ The first dummy line DL1 extends in the direction of the first protrusion 711 so as to overlap with the first protrusion 711 and the second dummy line DL2 extends in the direction of the second protrusion 711, And extends in the direction of the second protrusion 721 so as to overlap with the second protrusion 721.

The first touch electrode TE1 may be overlapped with at least two first dummy lines DL1 and the second touch electrode TE2 may be overlapped with at least two second dummy lines DL2. . In this case, each of the first dummy lines DL1 is electrically connected to the first touch electrode TE1, each of the second dummy lines DL2 is electrically connected to the second touch electrode TE2, And is electrically connected.

In other words, in the third embodiment, the opposing surfaces of the two touch electrodes adjacent to each other along the boundary gate line GLn are composed of a plurality of protrusions and a plurality of depressions, Protrusions of one of the plurality of touch electrodes are inserted into depressions of another touch electrode and protrusions of another touch electrode are inserted into depressions of one of the two touch electrodes And the dummy line extends to the protrusion.

According to the third embodiment of the present invention, a uniform common voltage can be supplied to all the pixels corresponding to one touch electrode. Also, the characteristics of the touch electrodes separated from each other can be made uniform.

7 is a view illustrating a portion of the in-cell type display panel according to the fourth embodiment of the present invention. Particularly, the first touch electrode TE1 and the second touch electrode TE2 shown in FIG. Fig. In the following description, the same or similar contents as those described in the first to third embodiments are omitted or briefly described.

The in-cell type display panel according to the fourth embodiment of the present invention basically includes all the features described in the third embodiment.

The first dummy line DL1 is connected to the first touch electrode TE1 in at least two pixels and in particular the first protrusion 711 is connected to the first touch electrode TE1 in at least two pixels, And at least one pixel overlapped with the first touch electrode TE1. The second dummy line DL2 is connected to the second touch electrode TE2 in at least two pixels. In particular, in at least one pixel overlapping the second protrusion 721, (TE2).

According to the fourth embodiment of the present invention, a uniform common voltage can be supplied to all the pixels corresponding to one touch electrode. Also, the characteristics of the touch electrodes separated from each other can be made uniform.

8 is a diagram illustrating waveforms of signals applied to the in-cell type display device according to the present invention. In FIG. 8, the waveform indicated by the Nomal Model represents the waveform of the common voltage in the general display panel, not the in-cell type.

The in-cell type display panel according to the present invention uses a self-capping method. A plurality of touch electrodes TE are arranged in the display area 110 of the in-cell type display panel 100 using the self cap method. The touch electrodes TE are supplied with a touch driving signal or a common voltage from the driving driver 300 attached to the flexible printed circuit board 500. For example, in the video display period, the touch electrodes TE are supplied with a common voltage through the touch lines TL. In the touch sensing period, the touch driving signals are supplied to the touch electrodes TE through the touch lines TL. During the video display period, the driving driver 300 supplies data voltages to the data lines DL1 to DLd included in the in-cell type display panel 100. [ The touch lines TL are electrically connected to any one of the touch electrodes TE.

In the present invention, coupling occurs between the gate line and the common electrode at the rising and polling times of the gate pulse sequentially supplied to the gate lines.

8, the first common voltage Vcom # 1, which is polled as the n-1th gate pulse GPn-1 is polled, is turned on when the n-th gate pulse GPn is grounded Can be offset by one. The n-1th gate pulse GPn-1 is a gate pulse supplied to the (n-1) th gate line Gn-1 shown in FIG. 3 to FIG. 7, The nth gate pulse GPn is a common voltage supplied to the first touch electrode TE1 and overlaps with the protrusions 711 and 721 of the first touch electrode TE1 and the second touch electrode TE2 , and the gate pulse supplied to the n-th gate line GLn.

8, the first common voltage Vcom # 1 polled as the n-th gate pulse GPn supplied to the n-th gate line GLn is polled is supplied to the n + The first gate pulse GPn + 1 is grounded. Here, the n-th gate pulse GPn is a gate pulse supplied to the n-th gate line GLn shown in Figs. 3 to 7, the first common voltage Vcom # 1 is a gate pulse supplied to the first touch electrode TE1, The n + 1th gate pulse GPn + 1 is a common voltage supplied to n + 1, which is a common voltage supplied to the first touch electrode TE1 and the second touch electrode TE2, overlapped with the protrusions 711 and 721 of the first touch electrode TE1 and the second touch electrode TE2. Th gate line GLn + 1.

In the present invention, both the first touch electrode TE1 and the second touch electrode TE2 are connected to the boundary gate lines GLn (GL1, GL2) at the interface between the first touch electrode TE1 and the second touch electrode TE2, The (n + 1) -th gate pulse GPn + 1 supplied to the (n + 1) -th gate line GLn + 1 overlapping only the second touch electrode TE2 is overlapped with the first touch It may also affect the electrode TE1.

Thus, a horizontal line-shaped image defect due to a difference in common voltage is not generated at the boundary between the two touch electrodes which are separated from each other.

The present invention described above is briefly summarized as follows.

Conventionally, in a display panel using an in-cell type self-capping method, a horizontal line defect occurs between touch electrodes separated from each other along a gate line. For example, in a display panel using an in-cell type self-capping method, there arises a difference in capacitance between the inside of the touch electrode and the boundary of the touch electrodes. Particularly, the capacitance between the touch electrode and the gate line within the touch electrode and the difference between the capacitance between the touch electrode and the gate line at the boundary of the touch electrode cause a difference in coupling of the common voltage. The difference in the coupling also affects the difference in the effective values (Vrms) of the common electrodes when the pixels are charged. This effect generates a dim shape in the form of a horizontal line.

In order to solve the above problems, the opposing surfaces of the two touch electrodes TE1 and TE2 adjacent to each other along the boundary gate line GLn are formed in a sawtooth pattern. For example, each of the sawtooth patterns includes a plurality of protrusions and a plurality of depressions. Due to the sawtooth patterns, a horizontal line defect does not occur between the two touch electrodes TE1 and TE2 adjacent to each other along the boundary gate line GLn.

In other words, in the present invention, the opposing surfaces of the two touch electrodes adjacent to each other along the gate line are formed in a sawtooth pattern, and the sawtooth patterns of the two touch electrodes are repeatedly crossed. In this case, the boundary gate lines disposed between the two touch electrodes are arranged to cross a plurality of protrusions and a plurality of depressions intersecting with each other. Accordingly, the difference between the effective values (Vrms) of the two common electrodes adjacent to each other can be minimized, so that a dimming in the form of a horizontal line is not generated between the two common electrodes.

In this case, the width of the area where the two touch electrodes adjacent to each other cross each other may be less than 1/2 of the width of each of the two touch electrodes.

According to the present invention, since the voltage change due to the coupling at the common electrodes adjacent to each other along the boundary gate line can be compensated, the coupling levels at all the touch electrodes can be uniformly maintained.

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: Insell type display panel 200: Gate driver
300: drive driver 400: control driver

Claims (8)

Data lines to which a data voltage is supplied;
Gate lines to which gate pulses are supplied;
Touch electrodes disposed independently; And
And touch lines electrically connected to any one of the touch electrodes and disposed in parallel with the data lines,
Wherein two touch electrodes adjacent to each other along at least one boundary gate line of the gate lines are disposed so as to overlap with the boundary gate line. The method according to claim 1,
Each of the opposing surfaces of the two touch electrodes adjacent to each other along the boundary gate line is composed of a plurality of protrusions and a plurality of depressions,
Protrusions of one of the two touch electrodes are inserted into depressions of another touch electrode,
Type display panel in which protrusions of another touch electrode are inserted into depressions of one of the two touch electrodes. 3. The method of claim 2,
Wherein the boundary gate line is disposed across the protrusions and the depressions. The method according to claim 1,
Wherein each of the touch lines is overlapped with the corresponding data line in parallel. The method according to claim 1,
Further comprising dummy lines overlapping the data lines and arranged in parallel with the touch lines,
Each of the dummy lines is electrically connected to one of the touch electrodes,
And each of the touch electrodes is connected to at least one of the dummy lines. 6. The method of claim 5,
Each of the opposing surfaces of the two touch electrodes adjacent to each other along the boundary gate line is composed of a plurality of protrusions and a plurality of depressions,
Protrusions of one of the two touch electrodes are inserted into depressions of another touch electrode,
And protrusions of another touch electrode are inserted into depressions of one of the two touch electrodes,
Wherein the dummy line extends to the protrusion. The method according to claim 6,
Wherein the dummy line is connected to the touch electrode in at least one pixel overlapping the protrusion. An insell type display panel;
A gate driver sequentially outputting gate pulses;
A touch driver for supplying a touch driving signal to the touch electrodes provided on the in-cell type display panel between the touch sensors, and supplying a common voltage to the touch electrodes during a video display period; And
And a data driver for outputting a data voltage,
The in-line type display panel includes:
Data lines to which a data voltage is supplied;
Gate lines to which gate pulses are supplied;
Touch electrodes disposed independently; And
And touch lines electrically connected to any one of the touch electrodes and arranged in parallel with the data lines,
Wherein two touch electrodes adjacent to each other along at least one boundary gate line among the gate lines are arranged to be overlapped with the boundary gate line.

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