KR101773611B1 - Liquid crystal display and driving method thereof - Google Patents

Abstract

The present invention relates to a liquid crystal display device capable of reducing power consumption and improving display quality and a driving method thereof.
A liquid crystal display device according to the present invention includes: a liquid crystal display panel in which TFTs whose data lines and gate lines are crossed and connected to the same data line are jiggled along the column direction; A gate driving circuit for sequentially supplying scan pulses to the odd gate lines of the gate lines and successively supplying scan pulses to the even gate lines; And a data driving circuit for supplying data to the data lines, the data of which polarity is inverted in units of a column line in synchronization with the scan pulse, wherein the gate driving circuit converts the scan region defined by the gate lines into n n is a positive integer equal to or larger than 2), and sequentially performs driving of the odd gate lines in each scan region, and successively drives the odd gate lines in a 1 / n frame.

Description

TECHNICAL FIELD [0001] The present invention relates to a liquid crystal display (LCD)

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, in which a display quality is improved and power consumption is reduced.

The liquid crystal display displays an image by adjusting the light transmittance of the liquid crystal cells according to a video signal. An active matrix type liquid crystal display device in which a thin film transistor (hereinafter referred to as "TFT") is formed for each liquid crystal cell displays a moving image in comparison with a liquid crystal display device of a passive matrix type The image can be displayed with a clearer image quality.

In order to reduce the DC offset component and reduce the deterioration of the liquid crystal, such a liquid crystal display device employs a dot inversion driving method to invert the polarity of the data voltage in units of horizontal and vertical neighboring liquid crystal cells. The polarity of the data voltage is determined based on the common voltage. The positive (+) data voltage is selected within a range higher than the common voltage, and the negative (-) data voltage is selected within a range lower than the common voltage. However, according to such a dot-inversion driving method, since the data voltage applied to the same data line must swing between positive (+) and negative (-) in every horizontal period, the driving frequency of the data driving circuit And the power consumption is increased.

In order to reduce the driving frequency and the power consumption of the data driving circuit, a z-inversion driving method has been proposed. In the jet-inversion driving method, the liquid crystal cells connected to the data lines through the respective TFTs are arranged on the right side of the data lines in the odd-numbered horizontal lines HL # 1, HL # 3 and HL # And on the left side of the data line in the horizontal lines (HL # 2, HL # 4, HL # 6). The liquid crystal cells located in the odd horizontal lines HL # 1, HL # 3 and HL # 5 sequentially apply data supplied from the data lines D1 to D6 adjacent to the left side on the basis of the data, The liquid crystal cells located on the even horizontal lines HL # 2, HL # 4 and HL # 6 are charged in synchronization with the scan pulse SP which is on the right side of the data lines DL2 to D7 In synchronization with the scan pulse SP sequentially applied as shown in FIG. Negative (-) data is continuously applied to the odd data lines D1, D3, D5 and D7 for one frame while positive data lines D2, D4 and D6 are continuously applied for one frame. ) Data is applied. Such a jet-inversion driving method can control the polarity of the liquid crystal cells in dot-inversion form without swinging the polarity of the data voltage applied to the same data line every horizontal period.

In the jet-inversion driving method, since the polarity of the data voltage applied to the same data line is maintained constant for one frame, the driving frequency and power consumption of the data driving circuit can be greatly reduced. However, the jet-inversion driving method has a fatal problem in that fine horizontal lines are generated due to poor charging in the case of mixing colors such as yellow, cyan, and magenta.

As shown in FIG. 1, it is illustrated that a mixed color fine line is generated by, for example, lighting red (R) liquid crystal cells and green (G) liquid crystal cells and lightening blue (B) liquid crystal cells to realize yellow Then, Here, to turn on the liquid crystal cells means to charge the liquid crystal cells with the data voltages of the white gray level, and to turn off the liquid crystal cells means to charge the liquid crystal cells with the black gray level data voltage.

Green (G) liquid crystal cells are strongly charged in the odd horizontal lines HL # 1, HL # 3 and HL # 5 in the yellow implementation, the red (R) HL # 2, HL # 4 and HL # 6, green (G) liquid crystal cells are approximately filled while red (R) liquid crystal cells are strongly charged.

The red (R) liquid crystal cell (or the green (G) liquid crystal cell) is connected to the same data line with itself and is charged by the upper neighboring liquid crystal cell immediately before the self- do. For example, the red (R) and green (G) liquid crystal cells connected to the second data line D2 by a zig zag have a positive (+) white gradation level in units of one horizontal period in accordance with the sequential scanning method, ) Data voltage sequentially. At this time, a positive (+) data voltage of white gradation is continuously applied to the second data line D2 in accordance with the sequential scanning method. Therefore, the charge potential variation on the second data line D2 is very small, and as a result, the red (R) and green (G) liquid crystal cells connected to the second data line D2 by the zig zag, Can be strongly charged.

On the other hand, when a red (R) liquid crystal cell (or a green (G) liquid crystal cell) is connected to the same data line with itself and the upper neighboring liquid crystal cell charged immediately before the same is charged with a black gradation data voltage It is approx.

For example, the blue (B) liquid crystal cell and the green (G) liquid crystal cell connected to the third data line D3 by zig zag are connected to the blue (B) liquid crystal cell The negative (-) data voltage of the black gradation and the negative (-) data voltage of the white gradation of the green (G) liquid crystal cell are sequentially charged. At this time, a negative (-) data voltage of black gradation and a negative (-) data voltage of white gradation are alternately applied to the third data line D3 in accordance with the sequential scanning method. The charging potential variation on the third data line D3 is relatively large due to the alternately applied black and white gradation data voltages. For this reason, when a white-gradated data voltage is applied to the third data line D3 to charge the green (G) liquid crystal cell subsequent to the blue (B) liquid crystal cell, the third data line D3 has a charge delay . This charge delay causes the green (G) liquid crystal cell to be approximately charged.

The red (R) liquid crystal cell and the blue (B) liquid crystal cell connected to the fourth data line D4 by zig zag are connected to the red (R) liquid crystal cell The positive (+) data voltage of the white gradation and the positive (+) data voltage of the black gradation of the blue (B) liquid crystal cell are sequentially charged. At this time, a positive (+) data voltage of the white gradation and a positive (+) data voltage of the black gradation are alternately applied to the fourth data line D4 in accordance with the sequential scanning method. The charging potential variation on the fourth data line D4 is relatively large due to the alternately applied white and black gradation data voltages. Therefore, when the data voltage of the white gradation level is applied to the fourth data line D4 in order to charge the red (R) liquid crystal cell following the blue (B) liquid crystal cell, the charge delay is applied to the fourth data line D4 . This charge delay causes the red (R) liquid crystal cell to be approximately charged.

When the liquid crystal cell to be charged in the odd horizontal line is different from the liquid crystal cell to be charged in the excellent horizontal line, a difference in yellow color occurs in the horizontal line unit. Such a difference is recognized as a fine horizontal line as shown in FIG. 3, which causes a deterioration in display quality.

Accordingly, it is an object of the present invention to provide a liquid crystal display device and a method of driving the same that can improve display quality while reducing driving frequency and power consumption of a data driving circuit.

According to an aspect of the present invention, there is provided a liquid crystal display device including: a liquid crystal display panel in which TFTs whose data lines and gate lines intersect and connected to the same data line are arranged in a jig along the column direction; A gate driving circuit for sequentially supplying scan pulses to the odd gate lines of the gate lines and successively supplying scan pulses to the even gate lines; And a data driving circuit for supplying data to the data lines, the data of which polarity is inverted in units of a column line in synchronization with the scan pulse, wherein the gate driving circuit converts the scan region defined by the gate lines into n n is a positive integer equal to or larger than 2), and sequentially performs driving of the odd gate lines in each scan region, and successively drives the odd gate lines in a 1 / n frame.

The liquid crystal cells connected to the data line through the TFTs are arranged on the right side of the data line in the odd horizontal line and on the left side of the data line in the even horizontal line.

In the liquid crystal display panel, charge polarities of data are inverted between liquid crystal cells adjacent to each other horizontally and vertically.

The gate driving circuit divides the scan region defined by the gate lines into n (n is a positive integer of 2 or more) and completes the scan operation in each scan region in a 1 / n frame.

If the scan region is divided into two, the gate driving circuit sequentially drives the odd gate lines of the first scan region in a half frame, and sequentially drives the outermost gate lines of the first scan region; Sequentially driving the odd gate lines of the second scan region in a 2/2 frame following the sequential driving of the outermost gate lines of the first scan region, and successively driving the outermost gate lines of the second scan region.

The driving method of the liquid crystal display including the liquid crystal display panel in which the data lines and the gate lines are crossed and the TFTs connected to the same data line are jiggled along the column direction according to the embodiment of the present invention, Sequentially supplying scan pulses to the odd-numbered gate lines and successively supplying scan pulses to the even-numbered gate lines; And supplying data to the data lines, the data of which polarity is inverted in units of column lines in synchronization with the scan pulse.

The liquid crystal display device and the driving method thereof according to the present invention adopt the jet inversion driving method and the interlace scanning method simultaneously to reduce the driving frequency and the power consumption of the data driving circuit, The horizontal line is solved by the interlace scanning method, and the unique problem in the interlace scanning method is solved by the jet inversion driving method, whereby the display quality can be remarkably improved.

1 and 2 are views for explaining a conventional jet inversion driving method.
3 is a view showing an example of a mixed color fine horizontal line.
4 is a view illustrating a liquid crystal display device according to an embodiment of the present invention.
5 is a view showing liquid crystal cells driven in a jet-inversion mode to reduce a driving frequency and power consumption of a data driving circuit.
6 is a view showing scan pulses supplied in an interlaced manner to remove mixed color fine horizontal lines.
7 illustrates an example in which a scan region is divided into a plurality of regions and scan pulses of an interlace method are sequentially supplied.
FIGS. 8 to 10 are diagrams for explaining a line depth specific to the interlace scanning method; FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 4 to 10. FIG.

4 shows a liquid crystal display according to an embodiment of the present invention.

Referring to FIG. 4, a liquid crystal display device according to an embodiment of the present invention includes a liquid crystal display panel 10, a timing controller 11, a data driving circuit 12, and a gate driving circuit 13.

The liquid crystal display panel 10 includes two glass substrates and a liquid crystal layer formed therebetween. In the liquid crystal display panel 10, a plurality of liquid crystal cells Clc are arranged in a matrix form for each pixel region provided with an intersection structure of the data lines DL and the gate lines GL.

The lower glass substrate of the liquid crystal display panel 10 includes a plurality of data lines DL, a plurality of gate lines GL, TFTs, pixel electrodes 1 of a liquid crystal cell Clc connected to TFTs, A common electrode 2 facing the pixel electrodes 1, and a storage capacitor Cst are formed. On the upper glass substrate of the liquid crystal display panel 10, a black matrix, a color filter, and a common electrode 2 are formed. The common electrode 2 is formed on an upper glass substrate in a vertical electric field driving mode such as a TN (Twisted Nematic) mode and a VA (Vertical Alignment) mode. The common electrode 2 is formed of an IPS (In Plane Switching) mode, an FFS (Fringe Field Switching) Is formed on the lower glass substrate together with the pixel electrode 1 in the same horizontal electric field driving system. On the upper glass substrate and the lower glass substrate of the liquid crystal display panel 10, polarizing plates having optical axes orthogonal to each other are attached, and an alignment film for forming a pre-tilt angle of liquid crystal is formed on the inner surface in contact with the liquid crystal.

The timing controller 11 receives the timing signals such as the vertical / horizontal synchronizing signals Vsync and Hsync, the data enable signal DE and the clock signal CLK and outputs the timing signals to the data driving circuit 12 and the gate driving circuit 13, And generates control signals (DDC, GDC) for controlling the operation timings of the switches.

The data control signal DDC for controlling the operation timing of the data driving circuit 12 includes a source sampling control signal for controlling the latch operation of data in the data driving circuit 12 based on a rising or falling edge, A source output enable signal SOE for controlling the output of the data driving circuit 12 and a polarity of a data voltage to be supplied to the liquid crystal cells Clc of the liquid crystal display panel 10, And a polarity control signal POL for controlling the polarity control signal POL.

The gate control signal GDC for controlling the operation timing of the gate driving circuit 13 includes a gate start pulse GSP indicating a starting horizontal line at which the scanning starts in one vertical period in which one screen is displayed, A gate shift clock signal (Gate Shift) generated in a pulse width corresponding to the ON period of the TFT as a timing control signal inputted to the shift register in the gate drive circuit 13 and sequentially shifting the gate start pulse GSP, Clock: GSC) and a gate output enable (GOE) for controlling the output of the gate driving circuit 13, and the like.

The timing controller 11 arranges the input digital video data RGB in accordance with the resolution of the liquid crystal display panel 10 and supplies the data to the data driving circuit 12.

The data driving circuit 12 includes a plurality of data drive ICs. Each of the data drive ICs includes a shift register, a latch, a digital to analog converter (DAC), an output buffer, and the like.

The data driving circuit 12 refers to the data control signal DDC and holds the digital video data RGB input from the timing controller 11 in the odd horizontal period as it is and shifts it to the right by one channel in the superior horizontal period . The data driving circuit 12 latches digital video data RGB to be held and shifted and converts the latched data into a positive data voltage or a negative data voltage with reference to the polarity control signal POL. The data driving circuit 12 inverts the polarities of the data voltages supplied to the data lines DL in units of column lines and inverts them in frame units. The data voltage whose polarity is inverted by the data driving circuit 12 is sequentially supplied to the data lines DL in synchronization with the scan pulse.

The gate drive circuit 13 includes a plurality of gate drive ICs. Each of the gate drive ICs includes a shift register, a level shifter for converting an output signal of the shift register into a swing width appropriate for driving the TFT of the liquid crystal cell, and an output buffer. The gate drive circuit 13 supplies scan pulses having a pulse width of approximately one horizontal period to the gate lines GL in an interlaced manner as shown in FIG. 6 to select a horizontal line to which a data voltage is to be applied.

FIG. 5 shows liquid crystal cells driven in a jet-inversion mode to reduce the driving frequency and power consumption of the data driving circuit 12. FIG. FIG. 6 shows scan pulses supplied in an interlaced manner in order to eliminate mixed color fine lines. FIG. 7 shows an example in which a scan region is divided into a plurality of regions and scan pulses of an interlace method are sequentially supplied.

Referring to FIG. 5, the present invention employs a jet-inversion driving method to control the polarity of liquid crystal cells in dot-inversion form by using the output of the data driving circuit 12 inverted in a column line unit.

5, the liquid crystal cells connected to the data lines through the respective TFTs are arranged on the right side of the data lines in the odd horizontal lines HL # 1, HL # 3 and HL # 5, , HL # 4, HL # 6) are arranged on the left side of the data line. The TFTs are turned on in response to the scan pulse to supply data on the data lines D1 to D7 to the liquid crystal cell. The TFTs in the odd horizontal lines HL # 1, HL # 3 and HL # 5 are located at intersections of the left data lines D1 to D6 and the odd gate lines G1, G3 and G5, In the horizontal lines HL # 2, HL # 4 and HL # 6, the TFTs are located at the intersections of the right data lines D2 to D7 and the even gate lines G2, G4 and G6 of the liquid crystal cell. The gate electrodes of the TFTs are connected to the gate lines G1 to G6. The source electrodes of the TFTs located in the odd horizontal lines HL # 1, HL # 3 and HL # 5 are connected to the left data lines D1 to D6 and the even horizontal lines HL # 2, HL # 6 are connected to the right data lines D2 to D7. The drain electrodes of the TFTs located in the odd horizontal lines HL # 1, HL # 3 and HL # 5 are connected to the pixel electrodes of the liquid crystal cells adjacent to the right side of the odd horizontal lines HL # HL # 4 and HL # 6) are connected to the pixel electrodes of the liquid crystal cells adjacent to the left side with respect to the drain electrodes. As a result, the TFTs connected to the same data line are arranged in a zig-zag manner along the column direction. In addition, the TFTs included in the same column line are arranged in zigzags between two data lines adjacent to the left and right.

Accordingly, the liquid crystal cells located in the odd horizontal lines HL # 1, HL # 3, and HL # 5 are interlaced with data supplied from the data lines D1 to D6 adjacent to the left side, The liquid crystal cells located in the even horizontal lines HL # 2, HL # 4 and HL # 6 are charged in synchronization with the scan pulse SP applied in the data lines D2 to D7 are charged in synchronization with the scan pulse SP applied in an interlaced manner as shown in FIG.

Negative (-) data is continuously applied to the odd data lines D1, D3, D5 and D7 for one frame while positive data lines D2, D4 and D6 are continuously applied for one frame. ) Data is applied. Such a jet-inversion driving method can control the polarity of the liquid crystal cells in dot-inversion form without swinging the polarity of the data voltage applied to the same data line every horizontal period. Since the polarity of the data voltage output through the same output channel in the data driving circuit is maintained constant for one frame, the driving frequency and power consumption of the data driving circuit are greatly reduced.

The present invention drives the gate lines G1 to G6 in an interlaced scan method in order to solve the problem that fine horizontal lines are generated due to poor charging in the mixed color implementation in the above-described jet-inversion driving method. To this end, the gate driving circuit sequentially supplies the scan pulses SP to the odd gate lines G1, G3 and G5 as shown in FIG. 6, and sequentially scans the even gate lines G2, G4 and G6 And supplies a pulse SP.

The color mixture is a combination of cyan, red (R) data and blue (B) data embodied by yellow, green (G) data and blue (B) data embodied by red (R) data and green ) Magenta (magenta) data. Among them, as shown in FIG. 5, for example, when red (R) liquid crystal cells and green (G) liquid crystal cells are turned on and yellow (B) liquid crystal cells are turned off, It is as follows. Here, to turn on the liquid crystal cells means to charge the liquid crystal cells with the data voltages of the white gray level, and to turn off the liquid crystal cells means to charge the liquid crystal cells with the black gray level data voltage.

As described in the related art, the fine horizontal line at the time of implementing the yellow color is such that the red (R) liquid crystal cells are approximately filled in the odd horizontal lines HL # 1, HL # 3 and HL # 2, HL # 4, and HL # 6) were filled with green (G) liquid crystal cells. The most fundamental reason why some liquid crystal cells are approximately charged is the sequential scanning method in which the data voltages of the black gradation level and the data voltages of the white gradation level are alternately supplied in a period of one horizontal period. For example, when data is supplied in synchronization with the sequential scanning method, the green (G) liquid crystal cells connected to the third data line D3 are forced to be charged due to the charging delay of the third data line D3. The charging delay is generated because the charging potential of the third data line D3 can not be rapidly changed from the black gradation level of the immediately preceding horizontal period to the white gradation level of the current horizontal period. Likewise, when data is supplied in synchronization with the sequential scanning method, the red (R) liquid crystal cells connected to the fourth data line D4 are forced to be charged due to the charging delay of the fourth data line D4. The charging delay occurs because the charging potential of the fourth data line D4 can not be rapidly changed from the black gradation level of the immediately preceding horizontal period to the white gradation level of the current horizontal period.

According to the interlaced scanning method of the present invention, after the data voltages of the black gradation level are all supplied and then the data voltages of the white gradation level are supplied, or the data voltages of the black gradation level are supplied after all the white gradation data voltages are supplied Therefore, the charge delay phenomenon on the data line as described above is drastically reduced. For example, among the liquid crystal cells connected to the third data line D3, the blue (B) liquid crystal cells are sequentially driven in synchronization with the scan pulses SP applied to the odd gate lines G1, G3 and G5, The green (G) liquid crystal cells are sequentially charged with the data voltages of the white gradation in synchronization with the scan pulses SP applied to the outermost gate lines G2, G4 and G6. Among the liquid crystal cells connected to the fourth data line D4, the blue (B) liquid crystal cells are sequentially driven in synchronization with the scan pulses SP applied to the even gate lines G2, G4 and G6, The red (R) liquid crystal cells are sequentially charged with the data voltages of the white gradation sequentially in synchronization with the scan pulses SP applied to the odd gate lines G1, G3, and G5.

On the other hand, in the interlace scan method, as the resolution of the liquid crystal display panel increases (that is, as the number of gate lines increases), the driving period of the odd numbered or evened gate lines becomes longer. However, the longer the driving period, the worse the moving picture response time (MPRT) characteristic is due to the difference in charging time between adjacent gate lines. Accordingly, the present invention divides the scan area defined by the gate lines into n (n is a positive integer of 2 or more) as shown in FIG. 7, and completes the scan operation in each scan area in 1 / n frame. For example, in the case where the scan regions G1 to G1080 are divided into four regions AR # 1 to AR # 4 as shown in FIG. 7, the gate drive circuit supplies the first region AR # 1 (Hereinafter referred to as odd scan), and successively drives (hereinafter referred to as excellent scan) the outermost gate lines of the first area AR # 1. The gate drive circuit scans the second area (AR # 2) in odd-numbered frames within 2/4 frame following the excellent scan for the first area (AR # 1), and then performs an excellent scan. The gate drive circuit scans the third area (AR # 3) in odd-numbered scans in a 3/4 frame following the excellent scan for the second area (AR # 2), and then performs an excellent scan. The gate drive circuit scans the fourth area (AR # 4) in odd-numbered scans in the 4/4 frame following the excellent scan for the third area (AR # 3), and then performs an excellent scan.

Meanwhile, when the interlace scan method is applied to the jet inversion driving method as in the present invention, there is a side effect that the line dim characteristic unique to the interlace scanning method shown in FIGS. 8 to 10 can be eliminated.

As shown in FIG. 10, when horizontal scanning is started after the odd scan is completed, horizontal lines HL # 2 (HL # 2, ), Charging failure due to polarity change occurs.

That is, the first, third and fifth data lines D1, D3 and D5 are connected in parallel with the scan pulse SP applied from the first, third and fifth gate lines G1, G3 and G5, (+) Data voltage in synchronization with the scan pulse (SP) applied from the second, fourth, and sixth gate lines (G2, G4, G6) after charging the data voltage of negative polarity Charge. Therefore, a charge delay is generated in the first, third, and fifth data lines D1, D3, and D5 when the polarity of the data voltage changes in synchronization with the scan pulse SP from the second gate line G2 . As a result, the liquid crystal cells of the second horizontal line HL # 2 connected between the second gate line G2 and the first, third and fifth data lines D1, D3 and D5 are approximately charged.

The second, fourth and sixth data lines D2, D4 and D6 are connected to the first, third and fifth gate lines G1, G3 and G5 in synchronization with the scan pulse SP applied from the first, (-) data voltages in synchronization with the scan pulses SP applied from the second, fourth and sixth gate lines G2, G4 and G6 after the data voltage of positive polarity is charged Charge. Therefore, at the point of time when the polarity of the data voltage changes in synchronization with the scan pulse SP from the second gate line G2, a charge delay is generated in the second, fourth, and sixth data lines D2, D4, and D6 . As a result, the liquid crystal cells of the second horizontal line HL # 2 connected between the second gate line G2 and the second, fourth and sixth data lines D2, D4 and D6 are approximately charged.

However, according to the present invention, as shown in FIG. 5, since the data polarity at the odd scan and the data polarity at the time of the excellent scan are the same with respect to the same data line, Defects are prevented in advance.

That is, the first, third and fifth data lines D1, D3 and D5 are connected in parallel with the scan pulse SP applied from the first, third and fifth gate lines G1, G3 and G5, (-) data voltage in synchronization with the scan pulse SP applied from the second, fourth and sixth gate lines G2, G4 and G6 after the data voltage of negative polarity is charged, . Therefore, a charge delay is not generated in the first, third and fifth data lines D1, D3 and D5 and as a result, the second gate line G2 and the first, third and fifth data lines D1, D3, and D5 of the second horizontal line HL # 2 are not substantially filled.

The second, fourth and sixth data lines D2, D4 and D6 are connected to the first, third and fifth gate lines G1, G3 and G5 in synchronization with the scan pulse SP applied from the first, (+) Data voltage in synchronization with the scan pulse (SP) applied from the second, fourth and sixth gate lines (G2, G4, G6) after the data voltage of positive polarity . Therefore, no charge delay is generated in the second, fourth, and sixth data lines D2, D4, and D6, and the second gate line G2 and the second, fourth, and sixth data lines D2, The liquid crystal cells of the second horizontal line HL # 2 connected between the first horizontal line HL # 2 and the second horizontal line HL # 2 are not substantially charged.

As described above, the liquid crystal display device and the driving method thereof according to the present invention employ the jet inversion driving method and the interlace scanning method simultaneously to reduce the driving frequency and the power consumption of the data driving circuit, It is possible to remarkably improve the display quality by solving the mixed color fine horizontal line which is a unique problem by the interlace scanning method and solving the specific problem in the interlace scanning method by the jet inversion driving method.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

10: liquid crystal display panel 11: timing controller
12: data driving circuit 13: gate driving circuit

Claims (9)

A liquid crystal display panel in which TFTs whose data lines and gate lines are crossed and connected to the same data line are jig rearranged along the column direction;
A gate driving circuit for sequentially supplying scan pulses to the odd gate lines of the gate lines and successively supplying scan pulses to the even gate lines; And
And a data driving circuit for supplying data to the data lines, the data of which polarity is inverted in units of column lines in synchronization with the scan pulse,
The gate drive circuit includes:
A scan operation for dividing the scan region defined by the gate lines into n (n is a positive integer of 2 or more), sequentially driving the odd gate lines in each scan region, and successively driving the odd gate lines, And the liquid crystal display device is completed within the frame.
The method according to claim 1,
Wherein the liquid crystal cells connected to the data line through the TFTs are arranged on the right side of the data line in the odd horizontal line and on the left side of the data line in the even horizontal line. The method according to claim 1,
Wherein in the liquid crystal display panel, charge polarities of data are reversed between liquid crystal cells adjacent to each other in the horizontal and vertical directions. delete The method according to claim 1,
When the scan region is divided into two, the gate driving circuit,
Sequentially driving the odd gate lines of the first scan region within 1/2 frame and sequentially driving the outermost gate lines of the first scan region;
Sequentially driving the odd gate lines of the second scan region in the 2/2 frame following the sequential driving of the even-numbered gate lines of the first scan region, and successively driving the odd-numbered gate lines of the second scan region Wherein the liquid crystal display device is a liquid crystal display device. A method of driving a liquid crystal display including a liquid crystal display panel in which TFTs whose data lines and gate lines are crossed and connected to the same data line are arranged in a jig along the column direction,
Sequentially supplying scan pulses to the odd gate lines of the gate lines and sequentially supplying scan pulses to the even gate lines; And
And supplying data to the data lines in which the polarity is inverted in units of column lines in synchronization with the scan pulse,
The step of supplying the scan pulse includes dividing a scan region defined by the gate lines into n (n is a positive integer of 2 or more), sequentially driving the odd gate lines in each scan region, And completing a scanning operation to sequentially drive the liquid crystal display panel in a 1 / n frame.
The method according to claim 6,
Wherein in the liquid crystal display panel, charge polarities of data are inverted between liquid crystal cells adjacent to each other in the horizontal and vertical directions. delete 8. The method of claim 7,
Wherein when the scan region is divided into two, the step of supplying the scan pulse includes:
Sequentially driving the odd gate lines of the first scan region within 1/2 frame and sequentially driving the outermost gate lines of the first scan region; And
Sequentially driving the odd gate lines of the second scan region in the 2/2 frame following the sequential driving of the even gate lines of the first scan region, and sequentially driving the odd gate lines of the second scan region And a driving method of the liquid crystal display device.

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