KR101696255B1 - liquid crystal display device and method of driving the same - Google Patents

Abstract

The present invention relates to a liquid crystal display device, comprising: a liquid crystal panel; And a timing control unit for separating the input image data signal into a left eye image signal and a right eye image signal, inserting and aligning a black data signal between the separated image data signals, and displaying the black data signal on the liquid crystal panel every frame, The time for displaying the video signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel and the left eye image signal and the right eye image signal in the black frame in which the black data signal is displayed And starts scanning the black data signal after a time corresponding to one frame is subtracted from a time displayed on the liquid crystal panel.

Description

[0001] The present invention relates to a liquid crystal display device and a method of driving the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device and a driving method thereof.

2. Description of the Related Art [0002] With the development of an information society, demands for a display device for displaying images have been increasing in various forms. Recently, a liquid crystal display (LCD), a plasma display panel (PDP) Various flat display devices such as an organic light emitting diode (OLED) have been utilized.

Of these flat panel display devices, liquid crystal display devices are widely used today because they have advantages of miniaturization, weight reduction, thinness, and low power driving. On the other hand, an active matrix type liquid crystal display device in which a large number of pixels are arranged in a matrix and a switching thin film transistor is formed in each of these pixels is widely used today.

In recent years, liquid crystal displays have realized three-dimensional stereoscopic images.

A passive method using a polarizing filter and an active method using a shutter glass are available as a method for implementing a three-dimensional image.

Here, the shutter glass system separates left and right images and displays them on a liquid crystal panel for each frame.

The shutter glass system has a problem that the left and right images interfere with each other. This is because the driving method of the liquid crystal display device is a holding method in which each pixel maintains a constant data voltage during every frame, thereby maintaining a constant light transmittance.

Further, since the time taken until the liquid crystal reacts and becomes a desired alignment state is longer than one frame due to the viscosity and elasticity, which are characteristics of physical properties of the liquid crystal, there is a problem that the left eye image or the right eye image can not reach the luminance to be expressed have.

The present invention has a problem in that a left eye image and a right eye image can not express a desired luminance due to a slow response speed of a liquid crystal in a shutter glass system.

In order to achieve the above-described object, the present invention provides a liquid crystal display comprising: a liquid crystal panel; And a timing control unit for separating the input image data signal into a left eye image signal and a right eye image signal, inserting and aligning a black data signal between the separated image data signals, and displaying the black data signal on the liquid crystal panel every frame, The time for displaying the video signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel and the left eye image signal and the right eye image signal in the black frame in which the black data signal is displayed And starts scanning the black data signal after a time corresponding to one frame is subtracted from a time displayed on the liquid crystal panel.

The timing control unit simultaneously inserts a black data signal into a liquid crystal panel that can not insert the black data signal at the end of the black frame.

The timing control unit applies the gate high voltage to at least one of the gate wirings, thereby inserting the black data signal into the data wiring corresponding thereto.

The timing control section increases the scan speed of the gate line to insert the black data signal into the data line corresponding thereto.

The time at which the scanning of the black data signal in the black frame starts is equal to or greater than the time at which the luminance of the upper end of the liquid crystal panel becomes the target luminance value after the corresponding frame.

The 3D stereoscopic image is implemented by the shutter glass method.

According to another embodiment of the present invention, there is provided a method of driving a liquid crystal display including a liquid crystal panel and a timing controller for inserting a black data signal into an input image data signal, the method comprising: separating the image data signal into a left eye image signal and a right eye image signal And inserting the black data signal into the black frame between the separated image data signals, wherein the time at which the left eye image signal and the right eye image signal are displayed on the liquid crystal panel, After a time obtained by subtracting a time corresponding to one frame from a time when the left eye image signal and the right eye image signal are displayed on the liquid crystal panel in a black frame in which the black data signal is displayed, A method of driving a liquid crystal display device that starts scanning a data signal.

The timing control unit simultaneously inserts a black data signal into a liquid crystal panel that can not insert the black data signal at the end of the black frame.

The timing control unit applies the gate high voltage to at least one of the gate wirings, thereby inserting the black data signal into the data wiring corresponding thereto.

The timing control section increases the scan speed of the gate line to insert the black data signal into the data line corresponding thereto.

The time at which the scanning of the black data signal in the black frame starts is equal to or greater than the time at which the luminance of the upper end of the liquid crystal panel becomes the target luminance value after the corresponding frame.

The 3D stereoscopic image is implemented by the shutter glass method.

The liquid crystal display device according to the present invention has the effect of improving the brightness of the left eye image and the right eye image in the shutter glass system to provide a clearer image quality.

1 is a schematic cross-sectional view illustrating a liquid crystal display device according to an embodiment of the present invention.
2 is a schematic sectional view showing a timing control unit according to an embodiment of the present invention;
3 is a flowchart illustrating an image display step according to an embodiment of the present invention.
4 is a schematic cross-sectional view illustrating an image processing unit according to an embodiment of the present invention.
5 is a schematic view illustrating a black data scanning method according to an embodiment of the present invention;

≪ Embodiment 1 >

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

1 is a view schematically showing a liquid crystal display device according to an embodiment of the present invention.

As shown in the figure, a liquid crystal display device 100 according to an embodiment of the present invention includes a liquid crystal panel 200, a backlight 800, and a driving circuit.

The liquid crystal panel 200 is provided with a plurality of gate lines GL extending along a row line direction and a plurality of data lines DL extending along a column line direction. The gate wiring GL and the data wiring DL intersect with each other to define a pixel P in the form of a matrix.

Each pixel P includes a switching thin film transistor T, a pixel electrode, a common electrode, a liquid crystal capacitor Clc, and a storage capacitor Cst.

The switching thin film transistor T is formed at the intersection of the gate line GL and the data line DL. The switching thin film transistor T is connected to the pixel electrode. On the other hand, a common electrode is formed corresponding to the pixel electrode. When a data voltage is applied to the pixel electrode and a common voltage is applied to the common electrode, an electric field is formed therebetween to drive the liquid crystal. The pixel electrode, the common electrode, and the liquid crystal located between these electrodes constitute a liquid crystal capacitor Clc. Each pixel P further includes a storage capacitor Cst, which serves to store the data voltage applied to the pixel electrode until the next frame.

The backlight 800 functions to supply light to the liquid crystal panel 200. As the backlight 800, a cold cathode fluorescent lamp (CCFL), an external electrode fluorescent lamp (EEFL), a light emitting diode (LED), or the like may be used.

The driving circuit unit may include a timing control unit 300, a gate driving unit 400, a data driving unit 500, a gamma reference voltage generating unit 600, and a lamp driving unit 700.

Here, the timing controller 300 inputs a video data signal D, a vertical synchronization signal, a horizontal synchronization signal, a clock signal, and a control signal TCS such as data enable from an external system such as a TV system or a video card . Although not shown, such signals may be input through the interface configured in the timing controller 300. [

The timing control unit 300 uses the input control signal TCS to control the gate control signal GCS for controlling the gate driving unit 400 and the data control signal DCS for controlling the data driving unit 500 . Further, it generates a lamp control signal (LCS) for controlling the lamp driver (700).

The timing control unit 300 receives the image data signal D from the external system and separates the image data signal D from the external system. That is, the image data signal D is separated into the left eye image signal LD and the right eye image signal RD.

Here, the timing control unit 300 inserts a black data signal BD between the separated video data signals D.

That is, the image data signal D input to the timing controller 300 is separated into the left and right eye image signals LD and RD, the black data signal BD is inserted between the left and right eye image signals LD and RD (For example, one frame) alternately to the data driver 500 in a predetermined period. This will be described in detail later.

Hereinafter, for the sake of convenience of description, when the left eye image signal LD, the right eye image signal RD, and the black data signal BD are referred to simultaneously, they are referred to as an output data signal Dout.

The gate driver 400 sequentially scans a plurality of gate lines GL in response to a gate control signal GCS supplied from the timing controller 300. [ For example, a plurality of gate lines GL are sequentially selected for each frame, and a gate voltage is output to the selected gate line GL. By the gate voltage, the switching thin film transistor T located on the row line is turned on. On the other hand, a turn-off voltage is supplied to the gate line GL until the scan of the next frame, so that the switching thin film transistor T maintains the turn-off state.

In the data driver 500, the data driver 500 applies a data voltage to the plurality of data lines DL in response to the data control signal DCS and the output data signal Dout supplied from the timing controller 300. [ . That is, the data voltage corresponding to the output data signal Dout is generated using the gamma reference voltage Vgamma, and the generated data voltage is output to the data line DL.

The gamma reference voltage generator 600 divides a high potential voltage and a low potential voltage to generate a plurality of gamma reference voltages Vgamma and supplies the generated gamma reference voltages Vgamma to the data driver 500.

The lamp driving unit 700 drives a plurality of lamps constituting the backlight 800 in response to the lamp control signal LCS supplied from the timing control unit 300.

More specifically, in the case of a frame in which the left eye image signal LD and the right eye image signal RD are displayed, a plurality of lamps are divided into at least one block, and a plurality of lamps are sequentially driven in block units do. For example, a plurality of ramps can be divided into two blocks. After a gate high voltage is applied to a gate line GL corresponding to each block, a plurality of ramps constituting the corresponding block are simultaneously turned on )do.

Further, in the case of a frame in which the black data signal BD is displayed, a plurality of lamps are turned off. The plurality of lamps are turned off to block the light from the liquid crystal panel 200. [

That is, the lamp driver 800 can turn on and off a plurality of lamps, for example, on a frame-by-frame basis. The frame in which the left eye image signal LD and the right eye image signal RD are displayed can turn on and off a plurality of lamps on a block basis and a frame in which the black data signal BD is displayed can display a plurality of lamps Off.

Hereinafter, the timing controller 300 according to the embodiment of the present invention will be described in detail.

First, the liquid crystal display 100 according to the embodiment of the present invention uses a shutter glass method to implement a three-dimensional stereoscopic image.

The shutter glass system includes a liquid crystal panel 200 for displaying left and right eye image signals LD and RD for each frame, and a shutter glass which is opened and closed synchronously with the liquid crystal panel 200. [

In this method, the left eye image signal LD and the right eye image signal RD, which are produced so that the binocular parallax exists, are displayed on the liquid crystal panel 200 alternately for each frame. In synchronism therewith, only the left side of the shutter glass is opened at the time of the left eye image signal LD, and only the right side of the shutter glass is opened at the time of the right eye image signal RD, thereby producing binocular parallax.

At this time, as the reaction speed of the liquid crystal layer is slow, for example, a motion blur phenomenon and a brightness reduction phenomenon appear in which the left eye image signal LD displayed in the previous frame appears in the right eye image signal RD of the current frame . Accordingly, in order to improve this, the black data BD is inserted between the frame in which the left eye image signal LD and the right eye image signal RD are displayed.

This will be described in more detail with reference to FIG.

2 is a view schematically showing a timing controller 300 according to an embodiment of the present invention.

2, the timing controller 300 according to the embodiment of the present invention may include a control signal generator 310 and an image processor 320.

The control signal generator 310 generates a control signal GCS for controlling the gate driver 400 and a data control signal GCS for controlling the data driver 500 using the input control signal TCS. (DCS). Further, it generates a lamp control signal (LCS) for controlling the lamp driver (700).

The gate control signal GCS includes a gate start pulse GSP, a gate shift clock GSC and a gate output enable signal GOE. The data control signal DCS includes a source start pulse (SSP), a source sampling clock (SSC), a source output enable (SOE) signal, a polarity signal (POL) . ≪ / RTI >

Here, the gate start pulse GSP serves to notify the start line of the screen, i.e., the first line in the vertical direction, and the gate shift clock GSC serves to indicate the start line of the screen in the pixel P of the liquid crystal panel 200 And specifies the time when the switching thin film transistor T is turned on. In addition, the gate output enable signal GOE serves to control the output of the gate driver 500.

The source start pulse SSP serves to notify the start point of the data in the horizontal direction, that is, the first pixel P, and the source shift clock SSC latches the data based on the rising and falling edges. (not shown). In addition, the embedded signal SOE serving as a source output controls the output of the data driver 500 and the polarity signal POL is a polarity signal to drive the liquid crystal in the positive polarity or the negative polarity. .

The image processor 320 receives the image data signal D from the external system and separates the image data signal D from the external system. That is, the image data signal D is separated into the left eye image signal LD and the right eye image signal RD, and the separated image signals are output to the data driver 500.

In addition, the image processing unit 300 inserts the black data signals BD between the separated image data signals, arranges them, and outputs the sorted data to the data driver 500.

That is, after separating the image data signal D input to the image processing unit 320 into left and right eye image signals LD and RD, a black data signal BD is provided between the left and right eye image signals LD and RD (For example, one frame) to the data driver 500 in an alternating manner.

For this purpose, the image processing unit 320 may include, for example, a line memory or a frame memory.

Hereinafter, the image processing unit 320 according to the embodiment of the present invention will be described in more detail with reference to FIGS.

FIG. 3 is a flowchart of inserting a black data signal BD into a video data signal D according to an embodiment of the present invention. FIG. 4 is a block diagram schematically showing an image processor 320 according to an embodiment of the present invention. And FIG. 5 is a view schematically showing a scan of a black data signal BD according to an embodiment of the present invention.

First, a black data insertion (BD) process according to an embodiment of the present invention will be described with reference to FIG.

3, for example, in the n-th frame, the left eye image signal LD (or the right eye image signal RD) separated from the image data signal D is aligned and is supplied to the data driver 500 . That is, the left eye image signal LD (or the right eye image signal RD) is displayed on the liquid crystal panel 200 (s1).

In the (n + 1) th frame, the black data signal BD is inserted, aligned, and transmitted to the data driver 500. That is, the black data signal BD is displayed on the liquid crystal panel 200 (s2).

Then, in the (n + 2) -th frame, the right eye image signal RD (or the left eye image signal LD) separated from the image data signal D is aligned and transmitted to the data driver 500. That is, the right eye image signal RD (or the left eye image signal LD) is displayed on the liquid crystal panel 200 (s3).

In the (n + 3) th frame, the black data signal BD is inserted, aligned and transmitted to the data driver 500. That is, the black data signal BD is displayed on the liquid crystal panel 200 (s4).

That is, the left eye image signal LD, the black data signal BD, the right eye image signal RD, and the black data signal BD are repeatedly displayed on the liquid crystal panel 200 alternately in units of frames, for example.

Hereinafter, the image processing unit 320 will be described with reference to FIG.

4, the image processing unit 320 may include an image separating unit 321 and a black data inserting unit 322.

The image separator 321 separates the left eye image signal LD from the input image data signal D and aligns the left eye image signal LD to the data driver 500. At this time, the left eye image signal LD is displayed on the liquid crystal panel 200 in one frame (for example, the n-th frame).

The image separator 323 separates the right eye image signal RD from the input image data signal D, and aligns the right eye image signal RD to the data driver 500. At this time, the right eye image signal RD is displayed on the liquid crystal panel 200 in one frame (for example, the (n + 2) th frame).

The black data inserting unit 322 inserts a black data signal BD between the left eye image signal LD and the right eye image signal RD and aligns the black data signal BD to deliver the black data signal BD to the data driver 500. That is, when the left eye image signal LD and the right eye image signal RD alternate with each other, the black data signal BD is inserted. Specifically, for example, if the nth frame is the left eye image signal LD in the liquid crystal panel 200, the (n + 1) th frame is displayed with the black data signal BD inserted.

Hereinafter, the scan of the black data signal BD of the black data inserter 322 according to the embodiment of the present invention will be described in detail with reference to FIG.

5, in the frame after the left eye image LD and the frame for displaying the right eye image signal RD, for example, in the n + 1 and n + 3th frames, the black data signal BD And is displayed on the liquid crystal panel 200.

That is, the black data inserter 322 inserts the black data signal BD in the (n + 1) th and (n + 3) th frames and displays it on the liquid crystal panel 200.

At this time, the start of scanning (i.e., the start of insertion) of the black data signal BD in the frame displaying the black data signal BD starts after the first time t1 in the frame. Here, for convenience of explanation, the frame in which the black data signal BD is displayed is referred to as a black frame BF (black frame).

More specifically, after the left eye image signal LD and the right eye image signal RD are scanned in the corresponding frame, the black data signal BD is not scanned in the black frame BF, the black data signal BD is scanned at time t1.

 That is, the black data inserter 322 starts inserting the black data signal BD after the first time t1 in the black frame BF.

Accordingly, the time for which the left eye image signal and the right eye image signal are displayed on the liquid crystal panel 200 is longer than the time for which the black data signal BD is displayed on the liquid crystal panel 200. Specifically, for example, when the black data signal BD is scanned in the black frame BF after the first time (t1), the time for which the left eye image signal and the right eye image signal are displayed on the liquid crystal panel 200 is And a value obtained by adding the first time t1 to the time corresponding to the frame.

On the other hand, the time at which the black data signal BD is displayed on the liquid crystal panel 200 is a value obtained by subtracting the first time t1 from the time corresponding to one frame.

The left eye image signal LD and the right eye image signal RD are displayed twice as much as the first time t1 than the time when the black data signal BD is displayed on the liquid crystal panel 200. [

Here, the first time t1 is a time at which the luminance of the upper end portion of the liquid crystal panel 200 is lowered when the left eye image signal LD (or the right eye image signal RD) is displayed on the liquid crystal panel 200, May be equal to or greater than the time (second time t2) that the target luminance value can be obtained after the frame. That is, the second time t2 may be a time at which the luminance of the upper end of the liquid crystal panel 200 reaches the desired target value value after the scan of the left eye image signal LD, for example.

The first and second times t1 and t2 may have fluid values depending on various factors such as the properties of the liquid crystal layer and the type of the backlight 800. [

A portion (hereinafter referred to as a RESET portion) in which the black data BD is not scanned at the end of the black frame BF (hereinafter referred to as END) (BD) is scanned.

That is, in the RESET part, the black data BD is scanned simultaneously at the END time. For example, a gate high voltage is simultaneously applied to the gate line GL corresponding to the RESET portion, and black data BD is transferred to the corresponding data line DL.

This is because the entire scan time of the black data signal BD corresponding to one frame starts after the first time t1 and the time for substantially scanning the black data signal BD is shorter than the first time t1). Accordingly, the black data BD can not be inserted into the portion corresponding to the lower end portion of the liquid crystal panel 200 (i.e., the RESET portion). Therefore, by inserting the black data BD at the same time into the RESET part, it becomes possible to compensate for the insufficient time by the first time t1.

Such insertion of the black data BD has the effect of further securing the driving time of the liquid crystal layer of the left eye image signal LD and the right eye image signal RD. That is, the driving time of the liquid crystal layer of the left eye image signal LD and the right eye image signal RD is greater than one frame by the first time t1.

Thereby, it is possible to obtain a luminance value of a desired target value, and the image quality of the liquid crystal display device 100 can be improved.

≪ Embodiment 2 >

Hereinafter, another embodiment of the present invention will be described.

The parts without explanation are the same as or similar to those of the first embodiment.

The start of scanning (i.e., start of insertion) of the black data signal BD in the frame displaying the black data signal BD starts after the first time t1 in the frame.

 That is, the black data inserter 322 starts inserting the black data signal BD after the first time t1 in the black frame BF.

At this time, the scanning of the black data (BD) starts after the first time (t1). In order to insert the black data (BD) to the lower end of the liquid crystal panel (200) The black data signal BD can be transferred to the corresponding data line DL.

Such insertion of the black data BD has the effect of further securing the driving time of the liquid crystal layer of the left eye image signal LD and the right eye image signal RD. That is, the driving time of the liquid crystal layer of the left eye image signal LD and the right eye image signal RD is greater than one frame by the first time t1.

Thereby, it is possible to obtain a luminance value of a desired target value, and the image quality of the liquid crystal display device 100 can be improved.

≪ Third Embodiment >

Hereinafter, another embodiment of the present invention will be described.

The parts without explanation are the same as or similar to those of the first embodiment.

The start of scanning (i.e., start of insertion) of the black data signal BD in the frame displaying the black data signal BD starts after the first time t1 in the frame.

 That is, the black data inserter 322 starts inserting the black data signal BD after the first time t1 in the black frame BF.

At this time, the scanning of the black data signal BD is started after the first time t1. In order to insert the black data BD to the lower end of the liquid crystal panel 200, the insertion speed of the black data signal BD is increased can do. That is, the scan speed of the gate line GL can be increased.

More specifically, the black data signal BD is inserted during a period of time obtained by subtracting the first time t1 from the black frame BF with the speed at which the black data signal BD is inserted during the entire time of the black frame BF The speed is faster. Therefore, in order to increase the insertion speed of the black data signal BD, the scan speed of the gate line GL must be increased.

The plurality of gate lines GL are scanned for a time obtained by subtracting the first time t1 from the black frame BF and the selected gate line GL gate high voltage is applied.

Such insertion of the black data BD has the effect of further securing the driving time of the liquid crystal layer of the left eye image signal LD and the right eye image signal RD. That is, the driving time of the liquid crystal layer of the left eye image signal LD and the right eye image signal RD is greater than one frame by the first time t1.

Thereby, it is possible to obtain a luminance value of a desired target value, and the image quality of the liquid crystal display device 100 can be improved.

The embodiment of the present invention described above is an example of the present invention, and variations are possible within the spirit of the present invention. Accordingly, the invention includes modifications of the invention within the scope of the appended claims and equivalents thereof.

100: liquid crystal display device 200: liquid crystal panel
300:
320: Image processing unit 321: Left eye image separating unit
322: Black data inserting unit 323: Right eye image separating unit
BD: Black data signal BF: Frame in which black data is displayed
LD: left-eye video signal RD: right-eye video signal

Claims (12)

A liquid crystal panel including a plurality of pixels;
Eye image signal and the right-eye image signal, inserting and arranging a black data signal between the separated image data signals, and outputting the left-eye image signal, the black data signal, the right- (N + 1) th, (n + 2) th, and (n + 3)
Lt; / RTI >
Wherein the time for displaying the left eye image signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel,
Eye image signal and the right-eye image signal are displayed on the liquid crystal panel in each of the (n + 1) th and (n + 3) th frames in which the black data signal is displayed, After the subtracted time, the scan of the black data signal is started,
Wherein the timing control unit simultaneously applies the black data signal to the plurality of pixels to which the black data signal is not applied at the end of each of the (n + 1) th and (n + 3)
Liquid crystal display device.
delete A liquid crystal panel including a plurality of pixels;
Eye image signal and the right-eye image signal, inserting and arranging a black data signal between the separated image data signals, and outputting the left-eye image signal, the black data signal, the right- (N + 1) th, (n + 2) th, and (n + 3)
Lt; / RTI >
Wherein the time for displaying the left eye image signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel,
Eye image signal and the right-eye image signal are displayed on the liquid crystal panel in each of the (n + 1) th and (n + 3) th frames in which the black data signal is displayed, After the subtracted time, the scan of the black data signal is started,
Wherein the timing control unit simultaneously applies a gate high voltage to two or more gate wirings during each of the (n + 1) th and (n + 3) th frames to turn on the black data Signal
Liquid crystal display device.
A liquid crystal panel including a plurality of pixels;
Eye image signal and the right-eye image signal, inserting and arranging a black data signal between the separated image data signals, and outputting the left-eye image signal, the black data signal, the right- (N + 1) th, (n + 2) th, and (n + 3)
Lt; / RTI >
Wherein the time for displaying the left eye image signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel,
Eye image signal and the right-eye image signal are displayed on the liquid crystal panel in each of the (n + 1) th and (n + 3) th frames in which the black data signal is displayed, After the subtracted time, the scan of the black data signal is started,
Wherein the timing control unit increases the scan speed of the gate wiring during each of the (n + 1) th and (n + 3) th frames to apply the black data signal to the plurality of pixels corresponding thereto
Liquid crystal display device.
The method according to any one of claims 1, 3, and 4,
The time of starting scanning of the black data signal in each of the (n + 1) -th frame and the (n + 3) -th frame is longer than the time when the upper end luminance of the liquid crystal panel has a target luminance value after the corresponding frame Or the same
Liquid crystal display device.
The method according to any one of claims 1, 3, and 4,
Three-dimensional stereoscopic image is realized by shutter glass method.
Liquid crystal display device.
A method of driving a liquid crystal display including a liquid crystal panel including a plurality of pixels and a timing controller for inserting a black data signal into an input video data signal,
Separating the image data signal into a left eye image signal and a right eye image signal;
Inserting and aligning the black data signal between the separated video data signals;
The black data signal, the right eye image signal, and the black data signal are supplied to the liquid crystal panel for the nth, (n + 1), (n + 2) Steps to mark
Lt; / RTI >
Wherein the time for displaying the left eye image signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel,
Eye image signal and the right-eye image signal are displayed on the liquid crystal panel in each of the (n + 1) th and (n + 3) th frames in which the black data signal is displayed, After the subtracted time, the scan of the black data signal is started,
Wherein the timing control unit simultaneously applies the black data signal to the plurality of pixels to which the black data signal is not applied at the end of each of the (n + 1) th and (n + 3)
A method of driving a liquid crystal display device.
delete A method of driving a liquid crystal display including a liquid crystal panel including a plurality of pixels and a timing controller for inserting a black data signal into an input video data signal,
Separating the image data signal into a left eye image signal and a right eye image signal;
Inserting and aligning the black data signal between the separated video data signals;
The black data signal, the right eye image signal, and the black data signal are supplied to the liquid crystal panel for the nth, (n + 1), (n + 2) Steps to mark
Lt; / RTI >
Wherein the time for displaying the left eye image signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel,
Eye image signal and the right-eye image signal are displayed on the liquid crystal panel in each of the (n + 1) th and (n + 3) th frames in which the black data signal is displayed, After the subtracted time, the scan of the black data signal is started,
Wherein the timing control unit simultaneously applies a gate high voltage to two or more gate wirings during each of the (n + 1) th and (n + 3) th frames to turn on the black data Signal
A method of driving a liquid crystal display device.
A method of driving a liquid crystal display including a liquid crystal panel including a plurality of pixels and a timing controller for inserting a black data signal into an input video data signal,
Separating the image data signal into a left eye image signal and a right eye image signal;
Inserting and aligning the black data signal between the separated video data signals;
The black data signal, the right eye image signal, and the black data signal are supplied to the liquid crystal panel for the nth, (n + 1), (n + 2) Steps to mark
Lt; / RTI >
Wherein the time for displaying the left eye image signal and the right eye image signal on the liquid crystal panel is longer than the time for which the black data signal is displayed on the liquid crystal panel,
Eye image signal and the right-eye image signal are displayed on the liquid crystal panel in each of the (n + 1) th and (n + 3) th frames in which the black data signal is displayed, After the subtracted time, the scan of the black data signal is started,
Wherein the timing control unit comprises:
And increasing the scan speed of the gate line during each of the (n + 1) th and (n + 3) th frames to apply the black data signal to the corresponding plurality of pixels
A method of driving a liquid crystal display device.
11. A method according to any one of claims 7, 9 and 10,
The time of starting scanning of the black data signal in each of the (n + 1) -th frame and the (n + 3) -th frame is longer than the time when the upper end luminance of the liquid crystal panel has a target luminance value after the corresponding frame Or the same
A method of driving a liquid crystal display device.
11. A method according to any one of claims 7, 9 and 10,
Three-dimensional stereoscopic image is realized by shutter glass method.
A method of driving a liquid crystal display device.

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