KR20160128613A - DISPlAY WITH TOUCH SENSOR AND METHOD OF DRIVING THE SAME - Google Patents

DISPlAY WITH TOUCH SENSOR AND METHOD OF DRIVING THE SAME Download PDF

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Publication number
KR20160128613A
KR20160128613A KR1020150060269A KR20150060269A KR20160128613A KR 20160128613 A KR20160128613 A KR 20160128613A KR 1020150060269 A KR1020150060269 A KR 1020150060269A KR 20150060269 A KR20150060269 A KR 20150060269A KR 20160128613 A KR20160128613 A KR 20160128613A
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South Korea
Prior art keywords
data
current frame
scroll
frame
input
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KR1020150060269A
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Korean (ko)
Inventor
서웅진
임경호
장준우
박태용
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엘지디스플레이 주식회사
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Priority to KR1020150060269A priority Critical patent/KR20160128613A/en
Publication of KR20160128613A publication Critical patent/KR20160128613A/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • G06F3/0485—Scrolling or panning
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0252—Improving the response speed

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The present invention relates to a display device having a touch sensor which can increase a response speed of a liquid crystal and to a method for driving the same. According to the present invention, the display device having a touch sensor: predicts data of a previous frame before scrolling based on scroll data including a scroll speed and a scroll direction; and overdrives data of the current frame according to a comparison result of the predicted data of the previous frame and the data of the current frame.

Description

Technical Field [0001] The present invention relates to a display device having a touch sensor,

The present invention relates to a display device having a touch sensor and a driving method thereof, and more particularly to a display device having a touch sensor capable of improving a response speed of liquid crystal and a driving method thereof.

A user interface (UI) enables a person (user) to easily control various electronic devices as he / she wants. Representative examples of such a user interface include a keypad, a keyboard, a mouse, an on screen display (OSD), a remote controller having infrared communication or radio frequency (RF) communication function, and the like. User interface technology has been developed to enhance the user's sensibility and ease of operation. Recently, the user interface has evolved into a touch UI, a voice recognition UI, a 3D UI, and the like.

The touch UI is essential for portable information devices. The touch UI is implemented by a method of forming a touch screen on the screen of a display device. Such a touch screen can be implemented in a capacitive manner. The capacitive touch screen senses touch input by sensing a change in capacitance or a charge variation of the touch sensor when a finger or a conductive material contacts the touch sensor.

Of the display devices used in the touch UI, the liquid crystal display device not only slows the response speed of the liquid crystal itself, but also slows down the response speed in a low-temperature environment, thereby deteriorating the image quality. Particularly, when the user moves the image displayed on the screen of the display device by scrolling, there is a problem that a motion blur phenomenon in which the image is attracted due to the slow response characteristic of the liquid crystal is caused.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a display device having a touch sensor capable of improving a response speed of a liquid crystal and a driving method thereof.

In order to achieve the above object, a display device having a touch sensor and a driving method thereof according to the present invention predicts data of a previous frame before scrolling based on scroll data including a scroll speed and a scroll direction, The data of the current frame is overdriven in accordance with the result of comparison between the data of the frame and the data of the current frame.

The present invention can predict the data of the previous frame without the frame memory through the data of the current frame and the scroll data. The predicted data of the previous frame is compared with the data of the current frame, and the data of the current frame is modulated with the overdrive data according to the comparison result, thereby improving the liquid crystal response speed. Further, in the present invention, since the data of the previous frame can be predicted without the frame memory, the cost can be prevented from rising.

1 is a block diagram showing a display device having a touch sensor according to the present invention.
FIG. 2 is a diagram for explaining a scroll direction of scroll data generated by the scroll data generation unit shown in FIG. 1. FIG.
3 is a block diagram for specifically explaining the data modulation unit shown in FIG.
FIG. 4 is a diagram for explaining a calculation process of data of a previous frame predicted by the scroll operation unit shown in FIG. 3. FIG.
FIG. 5 is a diagram for explaining overdrive data generated in the overdrive processing unit shown in FIG.
6 is a diagram for explaining the response speed of the liquid crystal cell according to the present invention.
7 is a flowchart illustrating a method of driving a display device having a touch sensor according to the present invention.

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

1 is a block diagram showing a display device having a touch sensor according to the present invention.

1 includes a display panel 100, a panel driver including a data driver 108 and a gate driver 106 for driving the display panel 100, a timing controller 130 for controlling the panel driver, A touch screen 102 on the display panel 100 and a touch controller 116 for driving the touch screen 102. [ The timing controller 130 and the touch controller 116 are connected to the host system 104.

The display panel 100 includes a pixel array in which a plurality of pixels are arranged. The pixel array displays a graphical user interface (GUI) and other images including pointers or cursors.

When a liquid crystal panel is used as the display panel 100, the display panel 100 includes a color filter substrate on which a color filter array is formed, a thin film transistor substrate on which a thin film transistor array is formed, a liquid crystal layer between the color filter substrate and the thin film transistor substrate And a polarizing plate attached to the outer surfaces of the color filter substrate and the thin film transistor substrate, respectively. The display panel 100 displays an image through a pixel matrix in which a plurality of pixels are arranged. Each pixel implements a desired color by a combination of red, green, and blue sub-pixels that adjust the light transmittance by varying the liquid crystal array according to the data signal. Each sub-pixel has a thin film transistor connected to the gate line GL and the data line DL, a liquid crystal cell connected in parallel with the thin film transistor, and a storage capacitor. The liquid crystal cell charges the difference voltage between the data signal supplied to the pixel electrode through the thin film transistor and the common voltage supplied to the common electrode, and drives the liquid crystal according to the charged voltage to adjust the light transmittance. The storage capacitor stably maintains the voltage charged in the liquid crystal capacitor.

The data driver 108 converts the overdrive data from the timing controller 130 into an analog data voltage in response to the data control signal from the timing controller 130 so that the data line DL).

The gate driver 106 sequentially drives the gate line GL of the display panel 100 in response to the gate control signal from the timing controller 130. The gate driver 106 supplies the gate-on voltage for the corresponding scan period of each gate line GL and supplies the gate-off voltage for the remaining period during which the other gate line GL is driven.

The timing controller 130 processes the image data input from the host system 104 and supplies the processed image data to the data driver 108. That is, when the touch input is determined as a scroll input from the scroll data generator 140 of the host system 104, the timing controller 130 modulates the data of the current frame into hyperbolic data and outputs it to the data driver 108 And outputs the data of the current frame to the data driver 108 as it is in the case of the touch input other than the scroll input. The timing controller 130 is connected to the data driver 108 using a plurality of synchronization signals input from the host computer 50, that is, a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a data enable signal, A data control signal DCS for controlling the driving timing of the gate driver 106 and a gate control signal GCS for controlling the driving timing of the gate driver 106 are generated. The timing controller 130 outputs the generated data control signal DCS and the gate control signal GCS to the data driver 108 and the gate driver 106, respectively. The data control signal DCS includes a source start pulse and a source sampling clock for controlling the latch of the data signal, a polarity control signal for controlling the polarity of the data signal, a source output enable signal for controlling the output period of the data signal, . The gate control signal GCS includes a gate start pulse and a gate shift clock for controlling the scanning of the gate signal, a gate output enable signal for controlling the output period of the gate signal, and the like. The timing controller 130 supplies a synchronization signal (a vertical synchronization signal Vsync and a horizontal synchronization signal Hsync) to the touch controller 116 to control the driving timing of the liquid crystal panel 100 and the driving timing of the touch screen 102 So that the operation timing of the touch controller 116 can be controlled.

The touch screen 102 recognizes a touch by sensing a change in capacitance caused by a small amount of charge moving to a touch point when a conductor such as a human body or a stylus is touched. The touch screen 102 may be mounted on the display panel 100 or the touch sensor of the touch screen 102 may be embedded in the pixel array in an in-cell type together with the pixel array of the display panel 100 .

The touch screen 102 includes a Tx line, which is a plurality of transmission lines formed by electrically connecting a plurality of first sensing electrodes arranged in a first direction, and a plurality of second sensing elements arranged in a second direction crossing the first direction. And an Rx line which is a plurality of reception lines configured by electrically connecting electrodes. Each of the touch sensors has a mutual capacity formed between the Tx line and the Rx line. The mutual capacitance type touch screen 102 supplies a driving signal to the Tx lines and individually senses the capacitance change of each of the touch sensors through the Rx lines in synchronization with the driving signal.

The touch controller 116 supplies a driving signal to the Tx lines of the touch screen 102 and uses the read out signal output through the Rx line of the touch screen 102 to determine whether to touch each touch node 102 And supplies touch coordinate data TCD to the host system 104 in accordance with the result.

The host system 104 supplies the image data and the plurality of synchronizing signals to the timing controller 130 and analyzes the touch coordinate data TCD input from the touch controller 116, Run the program.

In particular, the host system 104 includes a scroll data generator 140 for generating scrolling data (SCR) when scrolling is determined by determining whether to scroll.

The scroll data generator 140 determines whether the touch coordinate data TCD input from the touch controller 116 is scrolled. Here, the scrolling means that the touch is released (drag-releasing point) after touching the touch screen (drag start point), moving the touch screen by a predetermined length while maintaining the touch state. When the scroll is generated, the scroll data generator 140 detects the coordinate of each of the start point and the release point of the drag, the speed of the drag, the pressure sensed at the drag, and the like to generate the scroll data including the scroll direction and the scroll speed SCR).

That is, as shown in FIG. 2, the scroll data generating unit 140 generates a scroll data in which the scroll direction is a positive X value when each coordinate value of the release point is scrolled from the left side to the right side, Direction, the scroll direction is a negative Y value. If the scroll direction is from the bottom to the upward direction, the scroll direction is a positive Y value. If the scroll direction is upward to downward, the scroll direction is a negative Y value Generates scroll data (SCR).

The scroll data generator 140 generates scroll data SCR having a higher scroll speed as the pressure detected at the time of drag input is larger, the drag speed is faster, or the coordinate change amount of each of the start point and the release point of the drag input is larger, . For example, the scroll data generator 140 sets the scroll speed to be proportional to the speed of the drag, and the unit is the pixel per frame (ppf).

The scroll data generator 140 is embedded in the host system 104. However, the scroll data generator 140 may be embedded in the timing controller 130 together with the data modulator 120. [

3, the data modulation unit 120 includes a scroll operation unit 122 for predicting data of a previous frame Fn-1 and an override processing unit 124 for modulating data of the current frame Fn Respectively.

The scroll operation unit 122 moves the data of the current frame Fn scrolled based on the scroll data SCR including the scroll direction and the scroll speed to predict the data of the previous frame Fn- do. That is, the scroll operation unit 122 moves the data of the current frame Fn by the scroll speed in the direction opposite to the scroll direction included in the scroll data SCR to predict the data of the previous frame Fn-1, And supplies the data of the previous frame (Fn-1) to the overdrive processing unit (124). For example, when scroll data including a scrolling speed of 2 ppf and a scroll direction that is a positive X direction are input as shown in FIG. 4, the scroll operation unit 122 scrolls the current frame Fn in the negative X direction Data is shifted by 2 pixels to predict and generate data of the previous frame Fn-1.

The overplay processing unit 124 compares the data of the current frame Fn with the data of the previous frame Fn-1 predicted by the scroll computing unit 122, And modulates it with the overdrive data set in advance and outputs it. That is, if the overdrive processing unit 124 determines that the data of the current frame Fn is smaller than the data of the previous frame Fn-1, Fn. If the overdrive processing unit 124 determines that the current frame Fn is larger than the previous frame Fn-1 data, the overdrive processing unit 124 outputs the data of the current frame Fn to the overdrive data larger than the current frame Fn Modulate. If the data of the current frame Fn and the data of the predicted previous frame Fn-1 are the same, the overplay processing unit 124 outputs the data of the current frame Fn as it is. The current frame data Fn is directly output to the edge pixels of the screen where the data of the previous frame Fn-1 can not be predicted by the movement of the data according to the scrolling.

For example, if the data of the predicted previous frame Fn-1 and the data of the current frame Fn are 64 gray or 192 gray as shown in Table 1 and FIG. 5, And outputs the data of the frame Fn as it is. If the predicted data of the previous frame Fn-1 is 64 gray and the data of the current frame Fn is 192 gray, the over-drive processing unit 124 determines whether the data of the previous frame Fn- 205 gray, and outputs the modulated data to the data driver 106 via the timing controller 130. [0050] When the predicted data of the previous frame Fn-1 is 192 gray and the data of the current frame Fn is 64 gray, the over-drive processing unit 124 outputs the overdrive data smaller than the data of the current frame Fn 51 gray and outputs the data to the data driver 106 through the timing controller 130. [ On the other hand, Table 1 shows an example of the overdrive data set in advance in the overdrive processing unit, and may vary depending on the panel characteristics and the driving method.


 Predicted previous frame data 0 ... 63 64 ... 191 192 ... 255 prefecture
ashes
The
re
being
place
this
foundation 0 0 ... 0 0 ... 0 0 ... 0 ... ... ... ... ... ... ... ... ... ... 63 69 ... 63 63 ... 50 50 ... 44 64 70 ... 64 64 ... 51 51 ... 45 ... ... ... ... ... ... ... ... ... ... 191 210 ... 204 204 ... 191 191 ... 185 192 211 ... 205 205 ... 192 192 ... 186 ... ... ... ... ... ... ... ... ... ... 255 255 ... 255 255 ... 255 255 ... 255

The data driver 106 converts the over driving data into the over driving data voltage of the positive / negative polarity and supplies it to the data lines DL. Accordingly, as shown in FIG. 6, the liquid crystal cell can improve the liquid crystal response speed by charging the over driving data voltage V2 higher than the input data voltage V1 of the current frame period. That is, since the liquid crystal response curve LC2 of the over driving data voltage V2 completes the transition faster than the liquid crystal response curve LC1 of the input data voltage V1, it is possible to quickly reach the luminance of the target gray level within the current frame period have.

As described above, the present invention can predict the data of the previous frame without the frame memory through the data of the current frame and the scroll data. The predicted data of the previous frame is compared with the data of the current frame, and the data of the current frame is modulated with the overdrive data according to the comparison result, thereby improving the liquid crystal response speed. Further, in the present invention, since the data of the previous frame can be predicted without the frame memory, the cost can be prevented from rising.

7 is a flowchart illustrating a method of driving a display device having a touch sensor according to an embodiment of the present invention. The display device shown in FIG. 1 and FIG. 3 will be described in detail with reference to FIG.

7, when the data of the current frame is input (step S11), the scroll data generator 140 determines whether the touch screen 102 has scrolled (step S12).

When the scroll is generated, the scroll data generator 140 generates scroll data including the scroll direction and the scroll speed from the still image of the previous frame to the still image of the current frame (step S13). The scroll operation unit 122 predicts the data of the previous frame through the scroll data including the scroll direction and the scroll speed. The over-driving processing unit 124 compares the data of the predicted previous frame with the data of the input current frame, and modulates the data of the current frame into the over driving data according to the comparison result (step S14). The over driving data of the current frame is output to the driving circuit of the display panel through the timing controller 130 (step S15).

On the other hand, when no scrolling occurs, the data of the current frame is directly output to the driving circuit of the display panel through the timing controller 130.

The display device of the present invention is not limited to the liquid crystal display device but may be a field emission display device, a plasma display panel (Plasma Display Panel), and an organic light emitting display device And a flat panel display device such as an electroluminescence device (EL) including an organic light emitting diode (OLED).

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, 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 according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

122: scroll operation unit 124:
140: scroll data generating unit

Claims (8)

A display panel for displaying an image;
A touch screen having a touch sensor for sensing a touch of a user generated on the display panel;
A scroll data generator for generating scroll data including a scroll speed and a scroll direction through a touch input sensed by the touch screen;
Wherein the scrolling unit scrolls the data of the current frame after scrolling to predict data of a previous frame before scrolling, and calculates a difference between the data of the previous frame and the data of the current frame, And a data modulator for overdriving the data. The method according to claim 1,
The data modulator
A scroll operation unit for moving data of the current frame by the scroll speed in a direction opposite to the scroll direction and predicting data of the previous frame;
And an override processing unit for comparing the data of the predicted previous frame with the data of the current frame and modulating the data of the current frame into overdrive data according to the comparison result. The method according to claim 1,
A data driver connected to a data line of the display panel;
And a timing controller for controlling the data driver,
The scroll data generator determines whether the touch input is a scroll input,
Wherein the timing controller outputs the overdrive data of the current frame to the data driver when the input is the scroll input and outputs the data of the current frame to the data driver when the input is the remaining input except for the scroll input, . 3. The method of claim 2,
The over-
If the data of the current frame is smaller than the data of the predicted previous frame, modulates the data of the current frame with the overdrive data smaller than the data of the current frame,
If the data of the current frame is larger than the data of the predicted previous frame, modulates the data of the current frame with the overdrive data larger than the data of the current frame,
And outputs the data of the current frame as it is if the data of the current frame is the same as the data of the predicted previous frame. Sensing a user's touch generated on a display panel displaying an image through a touch sensor;
Generating scroll data including a scroll speed and a scroll direction through the sensed touch input;
Moving the data of the current frame after scrolling based on the scroll data to predict data of a previous frame before scrolling;
And driving the data of the current frame based on a result of comparison between the data of the predicted previous frame and the data of the current frame. 6. The method of claim 5,
The step of predicting data of the previous frame
And moving the data of the current frame by the scroll speed in a direction opposite to the scroll direction to predict data of the previous frame. 6. The method of claim 5,
Outputting the over driving data of the current frame to a data driver connected to the data line of the display panel when the touch input is a scroll input,
And outputting the data of the current frame as it is to the data driver when the touch input is the remaining input except for the scroll input. 6. The method of claim 5,
The step of over-driving the data of the current frame
If the data of the current frame is smaller than the data of the predicted previous frame, modulates the data of the current frame with the overdrive data smaller than the data of the current frame,
If the data of the current frame is larger than the data of the predicted previous frame, modulates the data of the current frame with the overdrive data larger than the data of the current frame,
And outputting the data of the current frame as it is if the data of the current frame and the data of the predicted previous frame are the same.
KR1020150060269A 2015-04-29 2015-04-29 DISPlAY WITH TOUCH SENSOR AND METHOD OF DRIVING THE SAME KR20160128613A (en)

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