KR102528996B1 - Touch display device - Google Patents

Abstract

The present invention relates to a touch display device capable of reducing power consumption while minimizing deterioration in perceptual image quality by adaptively setting a luminance deterioration area according to user behavior information including touch information. Based on heat map matching based on touch information, the device can reduce power consumption while minimizing perceived image quality deterioration according to the user's behavior by adaptively setting an indifferent area that is specified during a user's touch operation and applying a luminance reduction process. there is.

Description

Touch display device {TOUCH DISPLAY DEVICE}

The present invention relates to a touch display device capable of reducing power consumption while minimizing deterioration in perceived image quality by adaptively setting a luminance reduction area according to user behavior information including touch information.

Touch sensors capable of inputting information by touch on the screen of the display are being applied to various displays such as laptops, monitors, and home appliances as well as portable information devices such as smart phones and tablets.

A touch sensor is applied to a display by attaching a touch panel on a display panel or embedding a touch electrode in a display panel. The touch sensor may use various touch sensing methods such as a resistive film method, a capacitance method, an electromagnetic induction method, an infrared method, and an ultrasonic method, and recently, a capacitance method is mainly used.

One of the important technical challenges of electronic devices such as touch display devices is a technology for reducing power consumption.

In order to reduce power consumption, the touch display device applies a convex algorithm that gradually reduces the luminance of the image from the center of the screen where the user's interest is high to the left and right peripheries of the screen where the user's interest is low. have the same problem.

Since the conventional convex algorithm assumes that the user's region of interest is concentrated in the center of the screen, when the user's region of interest moves to the periphery, there is a problem in that image quality perceived by the user is degraded due to decrease in luminance.

In the conventional convex algorithm, power consumption is reduced as the gain increases, but there is a limit to reducing power consumption due to a problem of deterioration in image quality due to non-uniformity of luminance.

The conventional convex algorithm has limitations in reducing power consumption because it is difficult to apply the conventional convex algorithm to secure image visibility when ambient illumination is high.

The present invention provides a touch display device capable of reducing power consumption while minimizing perceived image quality degradation by adaptively setting a luminance reduction area according to user behavior information including touch information.

In the touch display device according to an exemplary embodiment, the timing controller receives touch information from a host system, matches the touch information with a heat map of a region of interest stored in a memory, sets a user's disinterested region based on the touch information, and sets the user's disinterested region based on the touch information. A luminance reduction process is applied to the image of the region.

The timing controller according to an embodiment may set a user's main focus area and an indifferent area excluding the main focus area by using touch coordinates and user focus information.

The timing controller according to an embodiment may apply a contour blurring process using a blurring function before applying the luminance reduction process to the image of the indifferent region.

The timing controller according to an embodiment may differentially apply a gain for reducing luminance of an image of an indifferent region according to illuminance information.

According to an embodiment, the timing controller determines a user's finger shape function using touch coordinates and touch shape prediction information supplied from a host system and user focus information, sets a hidden area corresponding to the determined finger shape function, and A luminance reduction process may be applied to the image of the hidden area.

The touch display device according to an embodiment minimizes the deterioration of perceived image quality according to the user's behavior by adaptively setting an area of indifference specified during a user's touch operation based on heat map matching based on touch information and applying a luminance reduction process. while reducing power consumption.

The touch display device according to an exemplary embodiment may further reduce power consumption by further applying a blurring process before a luminance reduction process for an indifferent area.

The touch display device according to an embodiment can increase the luminance reduction rate for the luminance reduction area and reduce power consumption when the ambient illumination is high by adjusting the luminance reduction rate for each position of the indifferent area according to the ambient illumination.

A touch display device according to an exemplary embodiment adaptively sets a hidden area of a screen covered by a user's finger based on hidden area matching based on touch information and user focus information, and applies a luminance reduction process to adjust the user's behavior. Accordingly, it is possible to reduce power consumption while minimizing deterioration of image quality perceived by the user.

In the case of using an organic light emitting diode (OLED) display, the touch display device according to an exemplary embodiment reduces deterioration of the light emitting device by reducing luminance of an indifferent or hidden area, thereby improving the lifespan of the light emitting device.

1 is a block diagram schematically illustrating a configuration of a touch display device according to an exemplary embodiment.
2 is a plan view illustrating a self-capacitance type touch sensor array according to an exemplary embodiment.
3 is a plan view illustrating a touch sensor array of a mutual capacitance method according to an exemplary embodiment.
4 is diagrams illustrating a region of interest and a region of indifference according to touch positions of a touch display device according to an exemplary embodiment.
5 is a flowchart illustrating a method of driving a touch display device according to an exemplary embodiment step by step.
6 is diagrams illustrating an interresting heat map and a scrolling heat map according to an embodiment.
7 are graphs illustrating a blurring function and a convex function applied to an indifferent region according to an exemplary embodiment.
8 to 15 are diagrams illustrating various methods of setting an indifferent region according to touch coordinates of a touch display device according to an exemplary embodiment.
16 is a flowchart illustrating a method of driving a touch display device according to an exemplary embodiment.
17 is diagrams illustrating predicted finger shapes in a touch display device according to an exemplary embodiment.
18 are diagrams illustrating a method of setting a hidden area of a touch display device according to an exemplary embodiment.

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

1 is a block diagram schematically illustrating a configuration of a touch display device according to an exemplary embodiment.

Referring to FIG. 1 , a touch display device according to an exemplary embodiment includes a panel 100, a gate driver 200, a data driver 300, a timing controller 400, a touch driver 500, a touch controller 600, Host system 700 and the like.

The panel 100 includes a pixel array that displays an image and a touch sensor array that senses a user's touch input. The panel 100 may be a liquid crystal display panel with a touch sensor array, an organic light emitting diode (OLED) display panel, or other display panel.

The pixel array of the panel 100 includes a plurality of pixels to display an image, and each pixel has two colors, three colors, or four colors among white (W), red (R), green (G), and blue (B). It may consist of color subpixels. Each of the sub-pixels is connected to a gate line driven by the gate driver 200 and a data line driven by the data driver 300, and is independently driven through at least one thin film transistor to generate light having a brightness corresponding to the data signal. provides

The gate driver 200 receives a plurality of gate control signals from the timing controller 400 and performs a shift operation to individually drive the gate lines of the panel 100 .

The data driver 300 is controlled according to the data control signal supplied from the timing controller 400, converts the digital data supplied from the timing controller 400 into an analog data signal using gamma voltages, and converts the data of the panel 100. A corresponding data signal is supplied to each of the lines.

The touch sensor array of the panel 100 may be located on or embedded in the pixel array, may provide various touch sensing methods, and be driven and sensed by the touch driver 500 .

For example, the self-capacitance type touch sensor array 110 according to an embodiment shown in FIG. 2 or the mutual capacitance type touch sensor according to an embodiment shown in FIG. 3 An array 120 may be used.

Referring to FIG. 2 , the self-capacitance type touch sensor array 110 according to an exemplary embodiment includes a plurality of touch electrodes TE arranged in a matrix form, and each touch electrode TE includes each routing line RL. ) and is driven and sensed by the touch driver 500 (FIG. 1). The touch electrodes TE embedded in the pixel array may serve as a common electrode of the pixel array. The touch driver 500 supplies a touch driving signal to each touch electrode TE through each routing line RL and then reads out a signal fed back from the corresponding touch electrode TE. The touch driver 500 differentially amplifies and processes the touch driving signal and the readout signal for each touch electrode TE, converts the sensing data representing the amount of change in self capacitance (signal delay amount), and supplies the converted sensing data to the touch controller 600. do.

Referring to FIG. 3 , in the touch sensor array 120 of a mutual capacitance method according to an exemplary embodiment, a plurality of first touch electrodes TE1 disposed in a first direction (X) connect a first connection electrode B1. A plurality of receiving lines configured by connecting a plurality of transmission lines TX and a plurality of second touch electrodes TE2 disposed in the second direction Y through a first connection electrode B2. A plurality of first routing lines RL1 connecting the transmission lines RX and a plurality of transmission lines TX to the touch driver 500 and a plurality of receiving lines RX are connected to the touch driver 500, respectively. A plurality of second routing lines RL2 are provided, and mutual capacitance is formed between the first and second touch electrodes TE1 and TE2 by the intersection of the first and second connection electrodes B1 and B2. The touch driver 500 sequentially drives a plurality of transmission lines (TX), amplifies and signal-processes readout signals received through a plurality of reception lines (RX), and converts them into sensing data representing a change in mutual capacitance, thereby providing a touch controller (600).

The touch driver 500 may be embedded in the data driver 300 or the touch controller 600 . The touch controller 600 may be embedded in the host system 700 .

The touch controller 600 controls driving timing of the touch driver 500 and receives sensing data from the touch driver 500 and compares it with reference data to determine whether a touch has occurred. The touch controller 600 integrates positions of adjacent touch electrodes determined to have occurred as a touch area into a touch area, calculates touch coordinates for the touch area, and supplies them to the host system 700 .

The host system 700 executes a command corresponding to the touch coordinates supplied from the touch controller 600 . The host system 700 may predict a touch scroll operation performed by a user through analysis of touch coordinates. The host system 700 provides touch information including touch coordinates and touch scroll prediction to the timing controller 400 .

The host system 700 supplies source images and timing control signals to the timing controller 400 . The timing control signals may include a dot clock, a data enable signal, a vertical sync signal, a horizontal sync signal, and the like.

The host system 700 may track the user's focus by analyzing the user's face image periodically photographed through the camera 800 and further supply the tracked user's focus information to the timing controller 400 .

The host system 700 may sense the ambient illuminance through the illuminance sensor 900 and further supply the sensed illuminance information to the timing controller 400 .

The timing controller 400 controls the gate driver 200 and the data driver 300 using timing control signals supplied from the host system 700 and timing setting information stored therein. The timing controller 400 generates a plurality of gate control signals for controlling driving timing of the gate driver 200 and supplies them to the gate driver 400 . The timing controller 400 generates a plurality of data control signals for controlling driving timing of the data driver 300 and supplies them to the data driver 300 .

The timing controller 400 performs various image processing for image quality compensation and power consumption reduction on the entire source image supplied from the host system 700, and then supplies image-processed data to the data driver 300.

In particular, the timing controller 400 tends to be specified on the screen when a touch is repeated, such as a user's touch scroll, based on heat map matching by the user's touch information supplied from the host system 700. It is possible to reduce power consumption by setting the user's interest region and indifference region, and applying a luminance reduction process to the image of the indifference region 10 .

For example, as shown in FIG. 4(A), the timing controller 400 moves the user's region of interest 10 and The indifferent regions 20 may be separately set, and a luminance reduction process may be applied to an image of the indifferent region 10 . However, when the touch coordinates (x, y) are located in the center of the display area as shown in FIG. can

Meanwhile, the timing controller 400 may further receive user focus information from the host system 700 and, as shown in FIG. It can be set to an oval shape, etc. As shown in FIG. 4(C) , the timing controller 400 may set the main focus area 12 smaller than the set area of interest 10 based on the touch coordinates (x, y) to an elliptical shape, etc. Since an area under the region of interest 12 may be set as the indifferent region 22, the number of indifferent regions 22 subjected to luminance reduction processing may increase, thereby further reducing power consumption.

The timing controller 400 may further reduce power consumption by further performing a blurring process on the images of the indifferent regions 20 and 22 before the luminance reduction process.

The timing controller 400 may differentially apply the gain of the luminance control function (Gaussian function) applied to the indifferent regions 20 and 22 according to the supplied illuminance information supplied from the host system 700 . Accordingly, since the user is insensitive to changes in brightness when the illuminance is high, power consumption can be further reduced by increasing the luminance reduction rate according to the position in the indifferent regions 20 and 22 by applying a small gain.

5 is a flowchart illustrating a method of driving a touch display device according to an exemplary embodiment, and is performed by the timing controller 400 shown in FIG. 1 .

The timing controller 400 receives and inputs touch information including touch coordinates representing the user's touch position and prediction of the user's touch scroll from the host system 700 (S402).

The timing controller 400 uses the user's touch information supplied from the host system 700 and the heat map stored in the memory M to match the touch information and the heat map to determine the user's area of interest and An indifference area is set (S406). In the memory M, as shown in FIG. 6(A), an interesting heat map representing the region of interest of the user as a heat map during scrolling, and a scrolling operation as shown in FIG. 6(B) A scrolling heat map showing a selected luminance reduction area for the area where this occurs is stored. The timing controller 400 applies the user's touch information to the scroll heat map and the interesting heat map to set the interest area 10 (FIG. 4) and the indifference area 20 (FIG. 4) where the touch information and the heat map match. do.

Meanwhile, the timing controller 400 may further input user focus information through the host system 700 (S403), and use the user's touch information and focus information to determine the main focus area 12 (FIG. 4) and the indifferent area. (22; Fig. 5) can be set.

The timing controller 400 inputs the image supplied from the host system 700 (S408) and performs a luminance reduction process (S410) on the image corresponding to the indifferent regions 20 and 22 set in the previous step (S406). After that, the processed image is output (S412). The timing controller 400 performs a luminance control function (S410) as shown in FIG. Gains (a1, a2) of the Gaussian function) may be differentially applied.

Meanwhile, the timing controller 400 further applies a blurring process (S409) to the images corresponding to the indifferent areas 20 and 22 before the luminance reduction process (S410) to the images of the indifferent areas 20 and 22. can The timing controller 400 detects the contour of the image from the image of the indifferent region through the edge detection method, and corrects the detected contour data by applying a Gaussian function mask as shown in FIG. 7(A) to blur the contour. Blur processing is performed.

On the other hand, the timing controller 400 analyzes the image characteristics of the indifferent region, and disables the blurring process when the image of the indifferent region is a complex image or a text image to prevent deterioration in image quality.

7 are graphs illustrating a blurring function and a convex function applied to an indifferent region according to an exemplary embodiment.

Referring to FIG. 7 , the timing controller 400 uses a Gaussian function for both the blurring function and the convex function applied to the indifferent regions 20 and 22 ( FIG. 4 ).

Referring to FIG. 7(A), the timing controller 400 shows a blurring function graph applied to blur the outline of the image in the indifferent regions 20 and 22 (FIG. 4), expressed in Equation 1 below. is expressed

<Equation 1>

In Equation 1 above, x and y are pixel location information, and σ is a gradient value that determines the gain of the above function and is determined by the designer. As the value of σ increases, the shape of the function graph spreads as shown in FIG.

7(B) shows a convex function graph applied when adjusting the luminance of the entire conventional panel, and FIG. 7(C) shows a graph of the convex function applied when adjusting the luminance of an indifferent area according to an embodiment. As shown, only 1/2 of the convex function graph shown in FIG. 7(B) is used. The convex function can be expressed as Equation 2 below.

<Equation 2>

In Equation 2 above, a, b, and c are constants, Width represents the number of pixels in the X direction of the non-interest region, Height represents the number of pixels in the Y direction of the non-interest region, and σ _x and σ _y are As a slope value that determines the gain of the function, it is the same as in Equation 2 above, and σ _x is applied differently depending on the average picture level (APL) of the image.

As shown in FIG. 7(B), the convex function has a characteristic that the overall luminance decreases as the value of a decreases, and the peripheral luminance reduction rate increases as the value of σ decreases. Therefore, since the user is insensitive to changes in brightness when the illuminance is high, as shown in FIG. 7(C), a relatively small value of a can be applied to give a small gain to the indifferent area.

In other words, the timing controller 400 may adjust the luminance by differentially applying a gain value to the image of the indifferent region according to the illuminance information as shown in Table 1 below.

illuminance Applied Gain σ _x darkroom = 5 lux 80-90% 500 indoor illumination = 500 lux 60-70% 500 Burial roughness = 1000 lux 50-60% 500 outdoor illumination >1000lux 10-50% 500

The timing controller 400 applies the convex function shown in FIG. 7(C) when adjusting the luminance of the image of the indifferent region so that the luminance gradually decreases as the distance from the boundary between the region of interest and the region of indifference increases. Power consumption can be reduced by giving a small recording gain to further reduce the luminance.

8 to 15 are diagrams illustrating a method of setting different indifferent regions according to touch coordinates in a timing controller of a touch display device according to an exemplary embodiment.

8 illustrates indifferent areas set according to touch coordinates of a user's hand when the major axis of the touch display according to an embodiment is in the vertical direction, and FIG. When it is a direction, it indicates areas of indifference set according to the touch coordinates of one hand of the user.

8(A) and 9(A), when the touch coordinates (x, y) are (X/2, Y/2) located at the center of the screen, the timing controller 400 does not set an indifferent area. and disable luminance control. 8 and 9, X means the maximum value of the X-axis coordinate and Y means the maximum value of the Y-axis coordinate.

Referring to FIGS. 8(B) to 8(D) and 9(B) to 9(D), among the touch coordinates (x,y), the x coordinate is between 0.25X<x<0.75X and the y coordinate When is smaller than Y/2, the timing controller 400 sets an area below the y-coordinate as an indifferent area and applies a luminance reduction process to an image in the indifferent area. For example, as shown in FIGS. 8(B) to 8(D) and 9(B) to 9(D), the luminance of the indifferent area set by the timing controller 400 is downward in the Y direction. It may be gradually reduced as the y-coordinate becomes smaller.

10 illustrates indifferent areas set according to touch coordinates of a user's hand when the major axis of the touch display according to an embodiment is in the vertical direction, and FIG. 11 illustrates regions in which the major axis of the touch display according to an embodiment is horizontal When it is a direction, it indicates areas of indifference set according to the touch coordinates of one hand of the user.

Referring to FIGS. 10(A) and 11(A) , when the x coordinate of the touch coordinates (x, y) is less than 0.25X and the y coordinate is greater than Y/2, the timing controller 400 sets an indifferent area. and disable luminance control.

10(B) to 10(D) and 11(B) to 11(D), among touch coordinates (x, y), the x coordinate is smaller than 0.25X and the y coordinate is smaller than Y/2. If it is small, the timing controller 400 sets a triangular area below the diagonal connecting the touch coordinates (x,y) and (X,0) coordinates in the area below the y coordinate reference as an indifferent area, and the image of the indifferent area A luminance reduction process is applied to . For example, as shown in FIGS. 10(B) to 10(D) and 11(B) to 11(D), the luminance of the indifferent area set by the timing controller 400 is downward in the Y direction. It may be gradually reduced as the y-coordinate becomes smaller.

12 illustrates indifferent areas set according to touch coordinates of a user's hand when the long axis of the touch display according to an embodiment is in the vertical direction, and FIG. When it is a direction, it indicates areas of indifference set according to the touch coordinates of one hand of the user.

Referring to FIGS. 12(A) and 13(A) , when the x coordinate of the touch coordinates (x, y) is greater than 0.75X and the y coordinate is greater than Y/2, the timing controller 400 sets an indifferent area and disable luminance control.

Referring to FIGS. 12(B), 12(C), 13(B), and 13(C), among touch coordinates (x, y), the x coordinate is greater than 0.75X and the y coordinate is greater than Y/2. If it is small, the timing controller 400 sets the triangular area below the diagonal line connecting the touch coordinates (x,y) and (0,0) coordinates in the area below the y coordinate as an indifferent area, and the image of the indifferent area A luminance reduction process is applied to As shown in FIGS. 12(B), 12(C), 13(B), and 13(C), the luminance of the indifferent area set by the timing controller 400 goes downward in the Y direction, that is, y As the coordinate becomes smaller, it may be gradually reduced.

FIG. 14 illustrates areas of indifference set according to touch coordinates of both hands of a user when the major axis of the touch display according to an exemplary embodiment is in the vertical direction, and FIG. At this time, indifference areas set according to the touch coordinates of both hands of the user are shown.

14(A) to 14(C) and 15(A) to 15(C), among the first touch coordinates (x1, y1) and the second touch coordinates (x2, y2), x1 and x2 Regardless of the coordinates, if at least one of the coordinates y1 and y2 is greater than Y/2, the timing controller 400 does not set an indifferent region and disables luminance control.

Referring to FIGS. 14(D), 14(E), 15(D), and 15(E), among the first touch coordinates (x1, y1) and the second touch coordinates (x2, y2), x1 and x2 Regardless of the coordinates, if both the y1 and y2 coordinates are smaller than Y/2, the timing controller 400 sets the area below the y1 and y2 coordinates as the indifferent area based on the smaller coordinate value of the y1 and y2 coordinates, and the image of the indifferent area A luminance reduction process is applied to . As shown in FIGS. 14(D), 14(E), 15(D), and 15(E), the luminance of the indifferent area set by the timing controller 400 goes downward in the Y direction, that is, y As the coordinate becomes smaller, it may be gradually reduced.

16 is a flowchart illustrating a method of driving a touch display device according to an exemplary embodiment, FIG. 17 is diagrams illustrating finger shapes predicted in the touch display device according to an exemplary embodiment, and FIG. 18 is a touch screen according to an exemplary embodiment. These diagrams show a method for setting a hidden area of a display device, which is performed by the timing controller 400 shown in FIG. 1 .

The timing controller 400 receives and inputs various touch information including touch prediction shape information such as touch force and touch area size along with the user's touch coordinates from the host system 700 (S702), and inputs them (S702). User focus information tracked by the camera 800 is input through (S403).

17(A) to 17(D) by comprehensively using the user's touch behavior information including the user's touch coordinates, touch prediction shape information such as touch force and touch area size, and the user's focus information. As shown, the finger shape according to the user's touch behavior can be predicted. Data obtained by modeling a finger shape according to a user's touch behavior shown in FIGS. 17(A) to 17(D) are stored in a memory.

The timing controller 400 matches the user's touch behavior information supplied from the host system 700 with the modeling data stored in the memory to match the user's touch behavior as shown in FIGS. 18(A) and 18(B) . A finger shape function to be is determined (S706).

The timing controller 400 sets an area where the user's touch coordinates and a finger shape function match with a hidden map stored in the memory as a hidden area as shown in FIGS. 18(C) and 18(D) . do. The hidden regions shown in FIGS. 18(C) and 18(D) that match the finger shape functions of FIGS. 18(A) and 18(B) are stored as hidden maps in the memory.

The timing controller 400 inputs the image supplied from the host system 700 (S710), and performs luminance reduction processing on the image corresponding to the set hidden area as shown in FIGS. 18(C) and 18(D). After performing (S710), the processed image is output (S714). Power consumption can be reduced by reducing the luminance at the end of the hidden area.

The touch display device according to an embodiment minimizes the deterioration of perceived image quality according to the user's behavior by adaptively setting an area of indifference specified during a user's touch operation based on heat map matching based on touch information and applying a luminance reduction process. while reducing power consumption.

The touch display device according to an exemplary embodiment may further reduce power consumption by further applying a blurring process before a luminance reduction process for an indifferent area.

The touch display device according to an embodiment can increase the luminance reduction rate for the luminance reduction area and reduce power consumption when the ambient illumination is high by adjusting the luminance reduction rate for each position of the indifferent area according to the ambient illumination.

A touch display device according to an exemplary embodiment adaptively sets a hidden area of a screen covered by a user's finger based on hidden area matching based on touch information and user focus information, and applies a luminance reduction process to adjust the user's behavior. Accordingly, it is possible to reduce power consumption while minimizing deterioration of image quality perceived by the user.

In the case of using an organic light emitting diode (OLED) display, the touch display device according to an exemplary embodiment reduces deterioration of the light emitting device by reducing luminance of an indifferent or hidden area, thereby improving the lifespan of the light emitting device.

The above description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. Therefore, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed by the claims below, and all techniques within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: panel 200: gate driver
300: data driver 400: timing controller
500: touch driver 600: touch controller
700: host system 800: camera
900: illuminance sensor 10, 12: region of interest
20, 22: regions of non-interest

Claims (12)

A panel including a pixel array and a touch sensor array;
a gate driver and a data driver driving the pixel array;
a timing controller controlling the gate driver and the data driver;
a touch driver for driving and sensing the touch sensor array;
a touch controller receiving sensing data from the touch driver and calculating touch coordinates;
a host system that predicts a user's touch behavior by analyzing touch coordinates supplied from the touch controller, and supplies touch information including the touch coordinates and user's touch behavior information to the timing controller;
The timing controller
By receiving the touch information from the host system and matching the touch information with a heat map for the region of interest stored in the memory, a user's indifferent region is set based on the touch information, and a luminance reduction process is performed on the image of the set indifferent region. apply,
The timing controller
The touch display apparatus of claim 1 , wherein a contour blurring process is applied to the image of the indifferent region using a blurring function before the luminance reduction process is applied. The method of claim 1,
The host system supplies the touch coordinates and user's scroll prediction information to the timing controller;
wherein the timing controller sets the indifferent area by matching the touch coordinates and scroll prediction information with the heat map. The method of claim 1,
The host system tracks the user's focus using a camera and supplies extracted user focus information and the touch coordinates to the timing controller;
wherein the timing controller sets the user's main focus area and the indifferent area excluding the main focus area by using the touch coordinates and the user focus information. delete The method of claim 1,
The timing controller
A touch display device that gradually reduces luminance of the image of the indifferent region according to pixel positions. The method of claim 1,
Sensing the illuminance through an illuminance sensor of the host system and supplying illuminance information to the timing controller;
The touch display device of claim 1 , wherein the timing controller differentially applies a gain for reducing luminance of the image of the indifferent region according to the illuminance information. The method of claim 1,
The timing controller
The touch coordinates correspond to a user's one-handed touch,
Among the touch coordinates, when the Y-axis coordinate is less than 1/2 of the maximum value of the Y-axis and the X-axis coordinate is located between 1/4 and 3/4 of the maximum value of the X-axis,
A touch display device that sets an area below the Y-axis coordinate as the indifferent area. The method of claim 1,
The timing controller
The touch coordinates correspond to a user's one-handed touch,
Among the touch coordinates, when the Y-axis coordinate is less than 1/2 of the maximum value of the Y-axis and the X-axis coordinate is less than 1/4 of the maximum value of the X-axis,
and setting an area under a diagonal line connecting the touch coordinates and the coordinates of the maximum value on the X axis and the minimum value on the Y axis as the indifferent region. The method of claim 1,
The timing controller
The touch coordinates correspond to a user's one-handed touch,
Among the touch coordinates, if the Y-axis coordinate is less than 1/2 of the maximum value of the Y-axis and the X-axis coordinate is greater than 3/4 of the maximum value of the X-axis,
and setting an area below a diagonal line connecting the touch coordinates and the coordinates of the minimum X-axis and minimum Y-axis values as the indifferent area. The method of claim 1,
The timing controller
The touch coordinates include first and second touch coordinates corresponding to a user's touch with both hands,
If the Y-axis coordinate of the first and second touch coordinates, regardless of the X-axis coordinate, corresponds to the first condition that is less than 1/2 of the maximum Y-axis value,
An area less than or equal to a smaller value among the Y-axis coordinates of the first and second touch coordinates is set as the indifferent area;
and disabling the indifferent region setting and luminance reduction processing when the first and second touch coordinates are coordinates other than the first condition. The method of claim 1,
The timing controller
The touch coordinates correspond to a user's one-handed touch,
located at the midpoint of the X-axis and Y-axis, or
A touch for disabling the indifferent area setting and luminance reduction process when the X-axis coordinate is less than 1/4 or greater than 3/4 of the maximum value of the X-axis and the Y-axis coordinate is greater than 1/2 of the maximum value of the Y-axis display device. A panel including a pixel array and a touch sensor array;
a gate driver and a data driver driving the pixel array;
a timing controller controlling the gate driver and the data driver;
a touch driver for driving and sensing the touch sensor array;
a host system detecting and supplying touch coordinates and touch shape prediction information to the timing controller using sensing information of the touch driver, and detecting focus information of a user tracked through a camera and supplying the detected information to the timing controller;
The timing controller
The user's finger shape function is determined using the touch coordinates and touch shape prediction information supplied from the host system and the user focus information, a hidden area corresponding to the determined finger shape function is set, and an image of the hidden area is set. Luminance reduction processing is applied to
The timing controller
The touch display apparatus of claim 1 , wherein a contour blurring process is applied to the image of the hidden area using a blurring function before the luminance reduction process is applied.

Images