KR20120116789A - In cell type touch display device and method for compensating touch data using the same - Google Patents

Abstract

PURPOSE: A touch cell embedding type displaying device and a touch sensing data correcting method are provided to digitize an extracted noise component and correct touch sensing data based on the digitized noise component, thereby generating the touch sensing data with a more accurate value. CONSTITUTION: A plurality of touch sensing sensors(TS) outputs touch sensing signals according to touch of an external. A plurality of lead out lines transmits the touch sensing signals. A plurality of dummy lines is formed in at least one place by one among gaps between lead out lines which are closed each other and the lead out lines A touch data analyzing unit(TDA) generates a plurality of touch sensing data. The touch data analyzing unit generates a plurality of dummy data corresponding to dummy signals from a plurality of the dummy lines. [Reference numerals] (DD) Data driver; (GD) Gate driver; (SD) Scan driver; (TDA) Touch data analysis unit

Description

Touch cell built-in display device and touch sensing data correction method {IN CELL TYPE TOUCH DISPLAY DEVICE AND METHOD FOR COMPENSATING TOUCH DATA USING THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch display device, and more particularly, to a touch cell built-in display device capable of removing noise from touch sense data and a method for correcting touch sense data thereof.

The touch display device reads the touch detection signals from the touch detection sensors embedded therein and determines whether the touch is present and the touch position. However, the touch detection signals are often distorted due to various noises from inside or outside the touch display device.

1 is a diagram illustrating a touch discrimination situation based on normal touch sense data and distorted touch sense data.

FIG. 1 (a) shows a touch discrimination situation under ideal conditions where no noise component is mixed with the touch sensing data. In this case, since both the touch sensing data and the common voltage have a stable value, the touch sensing data corresponds to a part touched by a finger. It can be seen that only the touch detection data is normally below the threshold value.

On the other hand, (b) of FIG. 1 shows a touch discrimination situation in a condition close to an actual driving environment in which noise components are mixed with touch sensing data. In this case, since both the touch sensing data and the common voltage are distorted, In addition to the corresponding touch sensing data, it can be seen that the touch sensing data corresponding to other parts not touched are separated below the threshold value.

As such, when a noise component is added to the touch sensing data, a problem arises in that it is impossible to determine whether the touch is accurate or the touch position.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a dummy line inside the display panel, selectively detects only an external noise component (dummy signal) through the dummy lines, and detects the detected noise component. SUMMARY OF THE INVENTION An object of the present invention is to provide a touch cell embedded display device and a method of correcting touch sense data, which can digitalize and generate touch sense data having more accurate values by correcting touch sense data based on the digitized noise component.

According to another aspect of the present invention, there is provided a touch cell embedded display device including: a plurality of touch detection sensors configured to output a touch detection signal according to a touch from the outside; A plurality of lead-out lines for transmitting touch sensing signals from the plurality of touch sensing sensors; A plurality of dummy lines formed at least one of the lead-out line and the lead-out line adjacent to each other; Generating a plurality of touch sensing data corresponding to touch sensing signals from the plurality of readout lines, generating a plurality of dummy data corresponding to dummy signals from the plurality of dummy lines, and And a touch data analyzer configured to correct the plurality of touch sensing data based on a plurality of dummy data.

One dummy line is formed between each 2k-1th lead (k is a natural number) and the 2kth leadout line; The k-th dummy line is formed between the 2k-1th lead-out line and the 2kth lead-out line.

The plurality of touch sensing sensors are configured of i * j (i and j are natural numbers); The i * j touch sensors are arranged in an i * j matrix; The plurality of lead-out lines consist of j pieces; The plurality of dummy lines are composed of j / 2; The i touch sensing sensors included in the p-th column (p is a natural number) are commonly connected to the p-th lead-out line.

The touch data analysis unit receives i * j touch sensing signals and generates i * j touch sensing data; receive (i * j) / 2 dummy signals and generate (i * j) / 2 dummy data; J dummy groups including i dummy data are formed by dividing the (i * j) / 2 dummy data by i, and the average of the j dummy data included in each dummy group is averaged. Calculating dummy data; And i touch sensing data generated by i touch sensing signals from the 2k-th lead-out line and i touch sensing data generated by i touch sensing signals from the 2kth lead-out line. Each of them is corrected using average dummy data generated by i dummy signals from the k-th dummy line.

The touch data analysis unit subtracts the average dummy data related to the kth dummy line from each of the i touch sensing data related to the 2k-1th lead-out line, thereby i-connected to the 2k-1th lead-out line. Generating i corrected touch sensing data corresponding to the touch sensing sensors; And i corresponding to the i touch sensing sensors connected to the 2k th readout line by subtracting the average dummy data related to the kth dummy line from each of the i touch sensing data related to the 2kth readout line. Generating two corrected touch sensing data.

Each of the plurality of touch detection sensors may include: a first switching element controlled according to a first scan signal from a first scan line and connected between a DC driving power supply line and a node; A second switching element controlled according to a second scan signal from a second scan line and connected to the node and one lead-out line; And a sensing capacitor connected to the node and the common electrode; The first scan signal is output before the second scan signal.

A plurality of gate lines sequentially driven according to a plurality of gate signals sequentially output; A plurality of data lines for transmitting image data; And a pixel switching element controlled according to a gate signal from any one of the gate lines, and connected to any one of the data lines and the pixel electrodes.

A step of transmitting a plurality of touch detection signals output from the plurality of touch detection sensors through a plurality of lead-out lines; Transmitting, through the plurality of dummy lines, a plurality of dummy signals generated by a plurality of dummy lines formed one by one between at least one of the lead-out line and the lead-out line adjacent to each other; Generating a plurality of touch sensing data corresponding to touch sensing signals from the plurality of readout lines, generating a plurality of dummy data corresponding to dummy signals from the plurality of dummy lines, and And correcting the plurality of touch detection data based on the plurality of dummy data.

One dummy line is formed between each 2k-1th lead line (k is a natural number) and the 2nth leadout line; The k-th dummy line is formed between the 2k-1th lead-out line and the 2kth lead-out line.

The plurality of touch sensing sensors are configured of i * j (i and j are natural numbers); The i * j touch sensors are arranged in an i * j matrix; The plurality of lead-out lines consist of j pieces; The plurality of dummy lines are composed of j / 2; The i touch sensing sensors included in the p-th column (p is a natural number) are commonly connected to the p-th lead-out line.

Step C-1 includes receiving i * j touch sensing signals and generating i * j touch sensing data; a step C-2 of receiving (i * j) / 2 dummy signals to generate (i * j) / 2 dummy data; J dummy groups including i dummy data are formed by dividing the (i * j) / 2 dummy data by i, and the average of the j dummy data included in each dummy group is averaged. C-3 step of calculating dummy data; And i touch sensing data generated by i touch sensing signals from the 2k-th lead-out line and i touch sensing data generated by i touch sensing signals from the 2kth lead-out line. And each step C-4 is corrected using the average dummy data generated by the i dummy signals from the k-th dummy line.

In step C-4, i connected to the 2k-1th lead-out line by subtracting the average dummy data related to the kth dummy line from each of the i touch sensing data related to the 2k-1th lead-out line. Generating i corrected touch sensing data corresponding to two touch sensing sensors; And i corresponding to the i touch sensing sensors connected to the 2k th readout line by subtracting the average dummy data related to the kth dummy line from each of the i touch sensing data related to the 2kth readout line. Generating two corrected touch sensing data.

In the present invention, a touch having a more accurate value by selectively detecting only an external noise component (dummy signal) through the dummy lines, digitizing the detected noise component, and correcting the touch sensing data based on the digitized noise component. Sensing data can be generated.

1 is a diagram illustrating a touch discrimination situation by normal touch sensing data and distorted touch sensing data.
2 illustrates a touch cell embedded display device according to an exemplary embodiment of the present invention.
3 is a timing diagram of signals output from the gate driver and the scan driver of FIG.
FIG. 4 is a diagram for describing an arrangement structure between the leadout lines and the dummy lines of FIG. 2.
FIG. 5 is a detailed configuration diagram of one pixel including the touch sensor in FIG. 2.
6A and 6B illustrate a method of generating corrected touch sensing data according to the present invention.
7 illustrates waveforms of corrected touch sensing data obtained through a touch data analyzing unit according to an exemplary embodiment of the present invention.
8 is a view for explaining the conventional problem and the effect of the present invention.

2 is a diagram illustrating a touch cell embedded display device according to an exemplary embodiment of the present invention, and FIG. 3 is a timing diagram of signals output from the gate driver and the scan driver of FIG. 2.

As shown in FIG. 2, the touch cell built-in display device according to an exemplary embodiment of the present invention includes a display panel DP in which a plurality of pixels PXL are formed, a plurality of touch detection sensors TS, and a plurality of readouts. Lines ROL1 to ROLj, a plurality of dummy lines DML1 to DML (i / 2), a touch data analyzer TDA, a data driver DD, a gate driver GD, and a scan driver SD. Include.

The pixels PXL are composed of m * n pieces (m and n are natural numbers). The m * n pixels PXL are formed in m * n pixel PXL regions formed by crossing m gate lines GL1 through GLm and n data lines DL1 through DLn intersecting with the m gate lines GL1 through GLm. do. At this time, the m * n pixels PXL are arranged in an m * n matrix.

The m * n pixels PXL are divided into a plurality of red pixels R, a plurality of green pixels G, and a plurality of blue pixels B. Each of the red pixels R displays a red image, each of the green pixels G displays a green image, and each of the blue pixels B displays a blue image. In this case, the red pixel R, the green pixel G, and the blue pixel B included in one row and adjacent to each other form one unit pixel. This unit pixel displays one unit image composed of red, green, and blue.

As shown in FIG. 3, the gate driver GD sequentially outputs m gate signals Vg1 to Vgm for sequentially driving m gate lines in every frame period, and these m gate signals To m gate lines in turn.

The data driver DD simultaneously outputs n image data every horizontal period during which one gate line is driven, and simultaneously supplies these n image data to n data lines.

Each of the touch detection sensors TS outputs a touch detection signal according to a touch from the outside. The touch detection sensors TS are embedded in the display panel DP together with the pixels PXL. In this case, the touch detection sensors TS are formed in some pixels PXL. These touch detection sensors TS are composed of i * j pieces (i is a natural number smaller than m, j is a natural number smaller than n). These i * j touch sensors TS are arranged in the form of an i * j matrix.

As shown in FIG. 3, the i * j touch sensing sensors TS are driven according to the 2i scan signals Vs1 to Vs2i sequentially output. In this case, the j touch detection sensors TS included in one row receive two scan signals having sequential output timings. To this end, the 2q-1 th (q is a natural number) scan line and the 2q th scan line are commonly connected to the j touch detection sensors TS included in the q th row.

As illustrated in FIG. 3, the scan driver SD sequentially outputs 2i scan signals for sequentially driving 2i scan lines every frame period, and outputs the 2i scan signals to 2i scan lines. In turn. These 2i scan signals are output immediately after all m gate signals are output.

The lead outlines consist of j pieces. These j lead-out lines transmit i * j touch detection signals from i * j touch detection sensors TS. The i touch sensors TS included in the p-th column (p is a natural number) are commonly connected to the p-th lead-out line.

The dummy lines are formed at least one of the lead-out lines and the lead-out lines adjacent to each other. These dummy lines consist of j / 2. These dummy lines are lines which are not connected to any touch sensor TS. Each side of these dummy lines is connected to the data analysis unit, and the other side is floated. Therefore, signals of external noise-related components are applied to these dummy lines, not touch detection signals.

Here, the configuration of the j lead-out lines and the j / 2 dummy lines will be described in more detail as follows.

FIG. 4 is a diagram for describing an arrangement structure between the leadout lines and the dummy lines of FIG. 2.

As shown in FIG. 4, the k-th dummy line is formed between the 2k-1th lead-out line and the 2kth lead-out line. That is, two lead-out lines are disposed adjacent to both sides of one dummy line. For example, the first lead-out line ROL1 is disposed adjacent to the left side of the first dummy line DML1, and the second lead-out line ROL2 is adjacent to the right side of the first dummy line DML1. Is placed.

The touch data analyzer TDA receives i * j touch sensing signals from j readout lines and receives (i * j) / 2 dummy signals from j / 2 dummy lines. The i * j touch detection signals are current components, and the touch data analysis unit (TDA) converts I * j touch detection signals into voltages, and converts the voltages into digital signals to convert I * j touches. Generate sensed data. The touch data analyzer TDA converts (i * j) / 2 dummy signals into digital signals to generate (i * j) / 2 dummy data. In this case, when the (i * j) / 2 dummy signals are current components, the (i * j) / 2 dummy signals may be converted into a voltage and then converted into a digital signal as described above.

 The i * j touch sensing data are data corresponding to 1: 1 of the i * j touch sensing sensors TS. The (i * j) / 2 dummy data are signals corresponding to 1: 2 to the i * j touch detection sensors TS. That is, one dummy data is data corresponding to two touch detection sensors TS located on both sides of one dummy line providing the dummy data. The touch data analyzer TDA corrects i * j touch sense data based on (i * j) / 2 dummy data.

As described above, the present invention selectively detects only an external noise component (dummy signal) through the dummy lines DML1 to DML (i / 2), digitizes the detected noise component, and based on the digitized noise component. By correcting the touch sensing data, the touch sensing data having a more accurate value can be generated. For example, corrected touch sensing data may be generated by subtracting dummy data corresponding to the corresponding dummy line from each of the touch sensing data. Therefore, the corrected touch sensing data do not include a noise component.

Alternatively, the corrected touch sensing data may be generated by averaging the dummy data corresponding to one dummy line to extract the average dummy data, and subtracting the average dummy data corresponding to the dummy line from each touch data. have.

Meanwhile, the configuration of the pixel PXL and the touch sensor TS in FIG. 2 will be described in detail.

FIG. 5 is a detailed configuration diagram of one pixel PXL having the touch sensor TS shown in FIG. 2.

Since all the pixels PXL with the touch detection sensor TS have the same configuration, one pixel connected to the first gate line GL1, the first data line DL1, and the first lead-out line ROL1 ( PXL) is representatively described.

As illustrated in FIG. 5, one touch sensor TS includes a first switching element TR1, a second switching element TR2, and a sensing capacitor Css.

The first switching element TR1 is controlled according to the first scan signal Vg1 from the first scan line SL1 and is connected between the DC driving power line PL and the node nd. Here, the DC drive voltage PL is supplied with a DC drive voltage maintained at a constant voltage.

The second switching element TR2 is controlled according to the second scan signal Vg2 from the second scan line SL2 and is connected to the node nd and the first readout line ROL1.

The sensing capacitor Css is connected to the node nd and the common electrode. The common electrode CE is supplied with a common voltage maintained at a constant voltage.

Referring to the operation of the touch sensor (TS) having such a configuration as follows.

First, the operation of the touch sensor TS when the touch is not applied to the touch sensor TS is described.

First, the first switching device TR1 is turned on by the first scan signal Vs1. Then, the DC driving voltage is supplied to the node nd through the turned-on first switching device TR1. Then, the sensing capacitor Css is charged with the difference voltage between the DC driving voltage and the common voltage.

Thereafter, the second switching device TR2 is turned on by the second scan signal Vs2. At this time, the first switching device TR1 is turned off. Then, the current according to the difference voltage charged in the sensing capacitor Css through the turned-on second switching element TR2, that is, the touch sensing signal flows along the first lead-out line ROL1. The touch detection signal applied to the first lead out line ROL1 is supplied to the touch data analyzer TDA.

Next, the operation of the touch sensor TS when the touch is applied to the touch sensor TS from the outside will be described.

The operation at this time is the same as when the above-described touch is not applied, and the difference voltage stored in the sensing capacitor Css is reduced only by the touch. That is, when a touch is applied from the outside, the body of the user connected to the ground serves as a capacitor, thereby reducing the amount of charge of the sensing capacitor Css. Then, the amount of current supplied to the first lead-out line ROL1, that is, the amount of the touch detection signal, becomes relatively small.

The touch data analyzer TDA may determine the touch position and the touch by determining the size of the touch detection signal.

The pixel PXL includes a pixel switching element TR_P, a liquid crystal capacitor Clc, and a storage capacitor Cst.

The pixel switching element TR_P is turned on by the first gate signal Vg1 from the first gate line GL1, and the image data from the first data line DL1 is turned on by the pixel electrode (not shown). Is not supplied). The pixel electrode may be one terminal of the liquid crystal capacitor Clc and the storage capacitor Cst.

The pixel PXL not including the touch detection sensor also has the same structure as the pixel PXL shown in FIG. 5.

Meanwhile, a method of generating corrected touch detection data by the touch data analyzer TDA according to the present invention will be described in detail.

6A and 6B illustrate a method of generating corrected touch sense data according to the present invention.

Let i and j be 31 and 58, respectively, as shown in Figs. 6A and 6B. The numerical values are limited for convenience of explanation only, and the numerical values of i and j in the present invention may vary as much as the area of the display panel DP.

First, m to n gate lines are driven by sequentially driving the first to m gate lines so that m * n pixels PXL receive image data to display an image.

Thereafter, i * j (i.e., 1798 (31 * 58)) touch sensing sensors TS are operated by driving 2i (i.e., 62 (2 * 31) scan lines sequentially). Outputs 1798 touch sensing signals and (i * j) / 2 (i.e. 899 (1789/2)) dummy lines (i * j) / 2 (i.e. 899) In this case, i * j (i.e., 1798) touch detection signals are sequentially output in rows, and (i * j) / 2 (ie, 899) dummy data. Are also sequentially output in units of rows, that is, j (ie 58) touch sensing signals are output each time one row is driven, and j / 2 (ie, 29 (58/2)) are output. ) Dummy signals are output.

Thereafter, as shown in FIG. 6A, the touch data analyzer TDA receives i * j (ie, 1798 (31 * 58)) touch detection signals and receives i * j (ie, 1798). 31 * 58), the touch sensing data R1_1 to R58_31 are generated.

Also, as shown in FIG. 6A, the touch data analyzer TDA receives (i * j) / 2 dummy signals (i.e., 899 (1789/2)) and receives (i * j) / Two dummy data D1_1 to D29_31 are generated (that is, 899 (1789/2)).

Subsequently, i (i.e., 31) touch sensing data generated by i (i.e., 31) touch sensing signals from the 2n-1th lead-out line and i from the 2n-th lead-out line Each of the i touch sensing data generated by the (ie, 31) touch sensing signals is corrected using each of the i dummy data generated by the i dummy signals from the nth dummy line. .

That is, i touches connected to the 2n-1th lead-out line are subtracted from each of the i touch sensed data related to the 2n-1th lead-out line by subtracting the i touch sensed data related to the n-th dummy line from each other. I corrected touch sensing data corresponding to the touch sensing sensors TS are generated. For example, the first to 31st dummy data D1_1 to D1_31 related to the first dummy line correspond to each other from the first to 31st touch sensing data R1_1 to R1_31 related to the first lead-out line. Subtract things from each other. In detail, the first dummy data D1_1 is subtracted from the first touch sensing data R1_1, the second dummy data D1_2 is subtracted from the second touch sensing data R1_2, and the third touch sensing data R1_3. ) By subtracting the third dummy data D1_3 and subtracting the thirty-first dummy data D1_31 from the thirty-first touch detection data R1_31, as shown in FIG. 6B. First to 31st corrected touch sensing data r1_1 to r1_31 for each of the touch sensing data R1_1 to R1_31 are generated.

Then, i touch sensing sensors connected to the 2nth lead-out line by subtracting i touch sensing data related to the nth dummy line from each of the i touch sensing data related to the 2nth lead-out line, respectively. I corrected touch sensing data corresponding to the TSs are generated. For example, the first to 31st dummy data D1_1 to D1_31 related to the first dummy line correspond to each other from the 32nd to 62nd touch sensing data R2_1 to R2_31 related to the second lead-out line. Subtract things from each other. Specifically, the first dummy data D1_1 is subtracted from the thirty-second touch sense data R2_1, the second dummy data D1_2 is subtracted from the thirty-third touch sense data R2_2, and the thirty-fourth touch sense data R3_3. ) By subtracting the third dummy data D1_3 from the second dummy data D1_3 and subtracting the thirty-first dummy data D1_31 from the sixty-second touch detection data R2_31, as shown in FIG. 6B. Thirty-second to sixty-second corrected touch sensing data r2_1 to r2_31 for each of the touch sensing data R2_1 to R2_31 are generated.

In this manner, corrected touch sensing data for each of i * j touch sensors (ie, 1798 touch sensing data) may be generated.

Instead of the above method, corrected touch sensing data for each of i * j touch sensors (ie, 1798) may be generated using the average dummy data as follows.

As shown in FIG. 6A, the touch data analyzer TDA receives i * j (ie, 1798 (31 * 58)) touch sensing signals and receives i * j (ie, 1798 (31 *). 58) to generate touch detection data R1_1 to R58_31.

Also, as shown in FIG. 6A, the touch data analyzer TDA receives (i * j) / 2 dummy signals (i.e., 899 (1789/2)) and receives (i * j) / Two dummy data D1_1 to D29_31 are generated (that is, 899 (1789/2)).

Then, by dividing (i * j) / 2 (i.e., 899) dummy data by i (i.e. 31), j (i.e. 58) dummy groups including i dummy data are formed. For each dummy group, the average of i (ie, 31) dummy data included in the dummy group is taken to calculate j (ie, 58) average dummy data. For example, one average dummy data may be obtained by dividing the sum of all of the first to 31st dummy data D1_1 to D1_31 of FIG. 6A by 31. In this manner, first to 58th average dummy data corresponding to the first to 58th dummy lines may be obtained.

Next, i (i.e., 31) touch sensing data generated by i (i.e., 31) touch sensing signals from the 2n-1th lead-out line and from 2n -th lead-out line Each of the i (i.e. 31) touch sensing data generated by the i (i.e. 31) touch sensing signals, i (i.e. 31) dummy signals from the nth dummy line Correct using the average dummy data generated by

That is, the i touch detection sensors TS connected to the 2n-1th lead-out line by subtracting the average dummy data related to the nth dummy line from each of the i touch sensing data related to the 2n-1th lead-out line Generates i corrected touch sensing data corresponding to. For example, the first average dummy data related to the first dummy line is subtracted from each of the first to 31 th touch sensing data R1_1 to R1_31 related to the first lead-out line. Specifically, the first average dummy data is subtracted from the first touch sense data R1_1, the first average dummy data is subtracted from the second touch sense data R1_2, and the first average dummy data is subtracted from the third touch sense data R1_3. By subtracting the average dummy data and subtracting the first average dummy data from the 31st touch sensing data R1_31, the first to 31st touch sensing data R1_1 to R1_31 as shown in FIG. 6B. 1st to 31st corrected touch sensing data r1_1 to r1_31 for each of them are generated.

Then, i corresponding to the i touch sensing sensors TS connected to the 2 nth lead-out line by subtracting the average dummy data related to the n-th dummy line from each of the i touch sensing data related to the 2n-th lead-out line Generate two corrected touch sensing data. For example, the first average dummy data related to the first dummy line is subtracted from each of the 32nd to 62nd touch sensing data R2_1 to R2_31 related to the second lead-out line. Specifically, the first average dummy data is subtracted from the thirty-third touch sensing data R2_1, the first average dummy data is subtracted from the thirty-third touch sensing data R2_2, and the first average dummy data is extracted from the thirty-fourth touch sensing data R3_3. By subtracting the average dummy data and subtracting the first average dummy data from the 62nd touch sensing data R2_31, the 32nd to 62nd touch sensing data R2_1 to R2_31 as shown in FIG. 6B. Thirty-second to sixty-second corrected touch sensing data r2_1 to r2_31 are generated.

In this manner, corrected touch sensing data for each of i * j touch sensors (ie, 1798 touch sensing data) may be generated.

FIG. 7 illustrates waveforms of corrected touch sensing data obtained through the touch data analyzer TDA according to an exemplary embodiment of the present invention.

As shown in FIG. 7, only the corrected touch sensing data of the portion corresponding to the portion touched by the finger by the corrected touch sensing data correctly has a numerical value below the threshold, and the corrected touch corresponding to the remaining region except for this touch portion. It can be seen that the sensed data have a value that correctly exceeds the threshold. That is, according to the present invention, since the noise from the outside is removed from the touch sensing data, it can be seen that the touch is surely determined.

8 is a view for explaining the conventional problem and the effect of the present invention.

FIG. 8A illustrates waveforms of touch sensing data provided by a conventional touch display device. The touch sensing data includes a large number of noise components, so that the touch sensing data may have a large deviation based on a threshold value. It can be seen that it is swinging up and down. On the contrary, (b) of FIG. 8 illustrates waveforms of the corrected touch sensing data provided by the touch cell embedded display device according to the present invention. It can be seen that only the touch sensing data corresponding to the touched portion of the data are correctly separated below the threshold.

8 (a) and (b), the numerical values (5, 10, ..., 30) displayed on the X axis mean the values of i described above, and the numerical values (5, 10, ...) displayed on the Y axis. , 50) means the value of j described above. The coordinates of the X and Y axes mean respective coordinates of i * j touch detection sensors in the display panel. In addition, the numerical values (0, 500, ..., 2500) displayed on the Z-axis in FIG. 8A mean the sizes of the i * j touch sensing data for each, and in FIG. The numerical values (0, 500, ..., 2500) displayed on the Z axis mean the size of each of the i * j corrected touch sensing data.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Will be clear to those who have knowledge of.

GL #: #th gateline DL #: #th dataline
ROL #: #th lead-out line DML #: #th dummy line
SL #: #th scanline DD: data driver
GD: Gate Driver SD: Scan Driver
PXL: Pixel TS: Touch Sensor
R: red pixel G: green pixel
B: blue pixel PN: display panel
TDA: Touch Data Analysis Department

Claims (12)

A plurality of touch detection sensors outputting a touch detection signal according to a touch from the outside;
A plurality of lead-out lines for transmitting touch sensing signals from the plurality of touch sensing sensors;
A plurality of dummy lines each formed at least one of the lead-out line and the lead-out line adjacent to each other; And,
Generate a plurality of touch sense data corresponding to touch sense signals from the plurality of lead out lines, generate a plurality of dummy data corresponding to dummy signals from the plurality of dummy lines, And a touch data analyzer configured to correct the plurality of touch sensing data based on dummy data. The method of claim 1,
One dummy line is formed between each 2k-1th lead (k is a natural number) and the 2kth leadout line;
The k-th dummy line is formed between the 2k-1th lead-out line and the 2kth lead-out line. The method of claim 2,
The plurality of touch sensing sensors are configured of i * j (i and j are natural numbers);
The i * j touch sensors are arranged in an i * j matrix;
The plurality of lead-out lines consist of j pieces;
The plurality of dummy lines are composed of j / 2; And,
i touch sensing sensors included in a p-th column (p is a natural number) are commonly connected to a p-th lead-out line. The method of claim 3, wherein
The touch data analysis unit,
receive i * j touch sense signals and generate i * j touch sense data;
receive (i * j) / 2 dummy signals and generate (i * j) / 2 dummy data;
J dummy groups including i dummy data are formed by dividing the (i * j) / 2 dummy data by i, and the average of the j dummy data included in each dummy group is averaged. Calculating dummy data; And,
I touch sensing data generated by i touch sensing signals from 2k-1th lead-out line and i touch sensing data generated by i touch sensing signals from 2kth lead-out line, respectively And correcting the average by using the dummy data generated by the i dummy signals from the k-th dummy line. The method of claim 4, wherein
The touch data analysis unit,
Corresponding to the i touch sensing sensors connected to the 2k-1th lead-out line by subtracting the average dummy data related to the k-th dummy line from each of the i touch sensing data related to the 2k-1th lead-out line. Generate i corrected touch sense data; And,
I corrections corresponding to the i touch sensing sensors connected to the 2k th readout line by subtracting the average dummy data related to the n th dummy line from each of the i touch sensing data related to the 2k th readout line And a touch cell embedded display device for generating touch sensing data. The method of claim 1,
Each of the plurality of touch detection sensors,
A first switching element controlled according to the first scan signal from the first scan line and connected between the DC drive power line and the node;
A second switching element controlled according to a second scan signal from a second scan line and connected to the node and one lead-out line; And,
A sensing capacitor connected to said node and a common electrode;
And the first scan signal is output before the second scan signal. The method of claim 1,
A plurality of gate lines sequentially driven according to a plurality of gate signals sequentially output;
A plurality of data lines for transmitting image data; And,
And a pixel switching element controlled according to a gate signal from any one of the gate lines, and connected to any one of the data lines and the pixel electrodes. A step of transmitting a plurality of touch detection signals output from the plurality of touch detection sensors through a plurality of lead-out lines;
Transmitting, through the plurality of dummy lines, a plurality of dummy signals generated by a plurality of dummy lines formed one by one between at least one of the lead-out line and the lead-out line adjacent to each other; And,
Generate a plurality of touch sense data corresponding to touch sense signals from the plurality of lead out lines, generate a plurality of dummy data corresponding to dummy signals from the plurality of dummy lines, And correcting the plurality of touch sensing data based on the dummy data. The method of claim 8,
One dummy line is formed between each 2k-1th lead (k is a natural number) and the 2kth leadout line;
The k-th dummy line is formed between the 2k-1th lead-out line and the 2kth lead-out line. The method of claim 9,
The plurality of touch sensing sensors are configured of i * j (i and j are natural numbers);
The i * j touch sensors are arranged in an i * j matrix;
The plurality of lead-out lines consist of j pieces;
The plurality of dummy lines are composed of j / 2; And,
i touch sensing sensors included in a p-th column (p is a natural number) are commonly connected to a p-th lead-out line. 11. The method of claim 10,
Step C,
a step C-1 of receiving i * j touch sensing signals and generating i * j touch sensing data;
a step C-2 of receiving (i * j) / 2 dummy signals to generate (i * j) / 2 dummy data;
J dummy groups including i dummy data are formed by dividing the (i * j) / 2 dummy data by i, and the average of the j dummy data included in each dummy group is averaged. C-3 step of calculating dummy data; And,
I touch sensing data generated by i touch sensing signals from 2k-1th lead-out line and i touch sensing data generated by i touch sensing signals from 2kth lead-out line, respectively And correcting by using the average dummy data generated by the i dummy signals from the k-th dummy line. The method of claim 11,
In step C-4,
Corresponding to the i touch sensing sensors connected to the 2k-1th lead-out line by subtracting the average dummy data related to the k-th dummy line from each of the i touch sensing data related to the 2k-1th lead-out line. Generate i corrected touch sense data; And,
I corrections corresponding to the i touch sensing sensors connected to the 2k th readout line by subtracting the average dummy data related to the kth dummy line from each of the i touch sensing data related to the 2kth leadout line Touch sensing data correction method for a touch cell embedded display device, characterized in that for generating touch sensing data.

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