KR20120076178A - Drd driving type liquid crystal display - Google Patents

Drd driving type liquid crystal display Download PDF

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Publication number
KR20120076178A
KR20120076178A KR1020100138212A KR20100138212A KR20120076178A KR 20120076178 A KR20120076178 A KR 20120076178A KR 1020100138212 A KR1020100138212 A KR 1020100138212A KR 20100138212 A KR20100138212 A KR 20100138212A KR 20120076178 A KR20120076178 A KR 20120076178A
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South Korea
Prior art keywords
liquid crystal
gate
line
driving
crystal display
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KR1020100138212A
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Korean (ko)
Inventor
이민직
조영직
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엘지디스플레이 주식회사
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Priority to KR1020100138212A priority Critical patent/KR20120076178A/en
Publication of KR20120076178A publication Critical patent/KR20120076178A/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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE: A DRD(Double Rate Driving) driving type liquid crystal display is provided to prevent a dim with a vertical line type according to each vertical line from being generated by driving a horizontal line block with an interlaced scanning method after a liquid panel is sorted by a prescribed logical horizontal line block. CONSTITUTION: A liquid crystal panel(100) includes a liquid crystal cell located on an interchange between gate and data lines. A driving circuit unit(120) includes an interface unit(121), timing controller(122), gate driving unit(125), and source driving unit(126). The interface unit supplies a timing controller by receiving data related to images and a control signal. The source driving unit selects reference voltage of input data by responding to a control signal coming from a timing controller. The source driving unit controls a rotational angle of liquid molecules by supplying selected reference voltage to a liquid panel.

Description

DRD DRIVING TYPE LIQUID CRYSTAL DISPLAY}

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 in which a vertical line dim is generated for each vertical line in a liquid crystal display device having a double rate driving (DRD) pixel structure.

Recently, various portable devices such as mobile phones and laptop computers, and information electronic devices that implement high resolution and high quality images such as HDTVs have been developed. The demand for display devices is gradually increasing. Such flat panel displays include liquid crystal displays (LCDs), plasma display panels (PDPs), field emission displays (FEDs), and organic light emitting diodes (OLEDs), but mass production technologies, ease of driving, Liquid crystal displays (LCDs) are currently in the spotlight for their realization and realization of large-area screens.

In particular, an active matrix liquid crystal display device using a thin film transistor (TFT) as a switching element is suitable for displaying a dynamic image.

FIG. 1 illustrates a switching element structure included in a conventional active matrix liquid crystal display device. An active matrix liquid crystal display device converts a digital video signal into an analog signal based on a gamma voltage to a data line DL. At the same time as the gate signal is supplied to the gate line GL, the data signal is charged in the liquid crystal cell CLC.

The gate electrode of the TFT is connected to the gate line GL, the source electrode is connected to the data line DL, and the drain electrode of the TFT is connected to the pixel electrode of the liquid crystal cell Clc and one electrode of the storage capacitor Cst. Connected. A common voltage Vcom is supplied to the common electrode of the liquid crystal cell Clc. The storage capacitor Cst charges the data voltage applied from the data line DL when the TFT is turned on to maintain the voltage of the liquid crystal cell Clc constant. When the gate signal is applied to the gate line GL, the TFT is turned on to form a channel between the source electrode and the drain electrode to supply a voltage on the data line DL to the pixel electrode of the liquid crystal cell Clc. In this case, the liquid crystal molecules of the liquid crystal cell Clc display an image according to incident light while the arrangement is changed by an electric field between the pixel electrode and the common electrode.

The liquid crystal display includes a gate driver for driving the gate lines GL and a data driver for driving the data lines DL. The larger the size and the higher the resolution of the liquid crystal display, the number of ICs forming the driver is required. It is increasing.

However, since the IC of the data driver is relatively expensive compared to other devices, various methods for reducing the number of ICs to reduce the production cost of the liquid crystal display device have recently been researched and developed. Instead of doubling the number of data lines, the DRD (Double Rate Driving) driving method is proposed, which reduces the number of data lines by half and reduces the number of ICs required by half and realizes the same resolution as before.

2 is a diagram illustrating a pixel structure and a driving method of a DRD driving method liquid crystal display, and FIG. 3 is a diagram showing a pixel charging waveform according to a DRD driving method.

As shown, the DRD driving type liquid crystal display drives a plurality of liquid crystal cells arranged on one horizontal line using two gate lines and 1/2 data lines of the liquid crystal cell. The DRD driving liquid crystal display device is driven in a horizontal 2-dot inversion method to minimize flicker and reduce power consumption. Accordingly, two liquid crystal cells adjacent to each other with one data line interposed therebetween are connected to two gate lines, respectively, to charge data voltages having the same polarity supplied through the data lines.

Accordingly, the pixels of each horizontal line are charged in the arrow direction (1 to 8) sequentially from the upper horizontal line. Among the liquid crystal cells arranged on the top horizontal line, the R liquid crystal cell and the G liquid crystal cell shared in the first data line DL1 are supplied at the time of supplying the gate driving signals from the first and second gate lines GL1 and GL2. When the B liquid crystal cell and the R liquid crystal cell, which are sequentially charged with positive polarity (+) and are shared in the second data line DL2, are supplied with the gate driving signals from the first and second gate lines GL1 and GL2. The liquid crystal cells B and G, which are sequentially charged to the negative polarity (−) in synchronization with each other and are shared with the third data line DL3, are positively synchronized with the gate signal supply points from the gate lines GL1 and GL2. It is sequentially charged to (+).

In particular, the G liquid crystal cell connected to the first data line DL1 is charged after the charging of the R liquid crystal cell sharing the first data line DL1 because the G liquid crystal cell is charged from the signal supply point of the second gate line GL2. In contrast, the G liquid crystal cell connected to the third data line DL3 is charged and weakly charged from the signal supply point of the first gate line GL1.

Here, in comparison to other liquid crystal cells, the G liquid crystal cell has a noticeable vertical line dim due to the charging deviation caused by the strong charging and the weak charging, thereby degrading the image quality of the liquid crystal display panel.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a liquid crystal display device in which vertical line dims are eliminated due to variation in charging characteristics generated in a DRD driving liquid crystal display device.

In order to achieve the above object, a plurality of gate lines arranged in one direction and two forming one horizontal line; A plurality of data lines orthogonal to the gate lines; A liquid crystal panel disposed at orthogonal points of the gate line and the data line, the liquid crystal panel including two liquid crystal cells connected to one data line, and one block including a plurality of horizontal lines; n is a natural number It is characterized by dividing into three logical scan blocks and pre-driving the odd-numbered gate line for the corresponding scan block in a 1 / n frame and then driving the even-numbered gate line.

The liquid crystal cell has two neighboring horizontal lines connected to different gate lines and data lines, and the two adjacent liquid crystal cells are alternately connected with odd or even gate lines, and the liquid crystal panel has a horizontal 2-dot inversion. It is characterized by driving.

In the liquid crystal cell, two neighboring horizontal lines are connected to different gate lines and data lines, and two adjacent liquid crystal cells are alternately connected to odd or even gate lines in the vertical direction, and the liquid crystal panel is a 1 dot inversion. It is characterized by driving.

In the liquid crystal cell, two neighboring liquid crystal cells connected to one data line in a horizontal direction are connected to different gate lines, and two adjacent liquid crystal cells connected to different data lines are connected to the same gate line. When one of the two adjacent liquid crystal cells in the vertical direction is connected to the odd gate line, the other is connected to the even gate line, and the other is connected to the odd gate line, and the liquid crystal is The panel is characterized by driving vertical two dot inversion.

The above-described liquid crystal display device includes: a gate driver connected to the gate line to supply a gate driving signal; And a source driver connected to the data line to supply an image signal.

According to a preferred embodiment of the present invention, by dividing the liquid crystal panel into predetermined logical horizontal line blocks and driving each of them in an interlaced scanning method, it is possible to provide a liquid crystal display device having improved image quality by removing vertical lime dim. It works.

1 is a diagram illustrating a switching element structure included in a conventional active matrix liquid crystal display device.
2 is a diagram illustrating a pixel structure and a driving method of a DRD driving method liquid crystal display, and FIG. 3 is a diagram showing a pixel charging waveform according to a DRD driving method.
4 is a block diagram illustrating a structure of a liquid crystal display according to an exemplary embodiment of the present invention.
5 is a view for explaining a scan block driving method of the liquid crystal display of the present invention.
6 is a diagram illustrating a cell structure of a liquid crystal display according to a first embodiment of the present invention.
7 is a diagram illustrating a cell structure of a liquid crystal display according to a second exemplary embodiment of the present invention.
8 is a diagram illustrating a cell structure of a liquid crystal display according to a third exemplary embodiment of the present invention.

Hereinafter, a liquid crystal panel and a liquid crystal display including the same according to a preferred embodiment of the present invention with reference to the drawings.

In the following description, the drawings referred to for the embodiments herein are not intended to limit the shapes and positions of the components to the forms shown, and in particular the drawings are intended to provide an understanding of the structures and shapes that are technical features of the invention. To help, some components have been exaggerated or scaled down. In the following description, components overlapping with the conventional liquid crystal display device are omitted for convenience of description.

4 is a block diagram illustrating a structure of a liquid crystal display according to an exemplary embodiment of the present invention.

As shown, the liquid crystal display of the present invention includes a liquid crystal panel 100 for displaying an image and a driving circuit unit 120 for driving the liquid crystal panel 100.

The liquid crystal panel 100 crosses a plurality of data lines DL1 to DLm and a plurality of gate lines GL1 to GLn in a matrix form on a substrate using glass, and forms a plurality of pixel regions at intersections. In the pixel region, a thin film transistor TFT and a liquid crystal cell Clc are configured to display a screen.

The driving circuit unit 120 includes an interface unit 121, a timing controller 122, a gate driver 125, and a source driver 126.

The interface unit 121 outputs image related data, a clock signal CLK, a horizontal synchronous signal, a vertical synchronous signal, a data enable signal DE, and the like input to the driving circuit unit 120 from an external system such as a personal computer. The control signal including the input signal is supplied to the timing controller 122. As the interface 21, a low voltage differential signal (LVDS) interface and a TTL interface are used. In addition, the interface function may be collected and integrated into a single chip together with the timing controller 122.

The timing controller 122 generates a gate control signal for driving the gate driver 125 and a data control signal for driving the source driver 126 using the control signal input through the interface 121. In addition, the image-related data input through the interface 121 is converted into RGB data and supplied to the source driver 126.

The gate driver 125 controls turn-on / off of thin film transistors TFTs arranged on the liquid crystal panel 100 in response to gate control signals input from the timing controller 122. It plays a role.

The gate driver 125 includes one or more shift registers, and the first to n th shift registers generate gate drive signals generated corresponding to the clock signal CLK input from the timing controller 122, respectively. Pixels in which image signals supplied from the source driver 126 are connected to the TFTs by supplying them to the gate lines GL1 to GLn to drive the TFTs to turn on / off. To be applied.

In this case, the gate lines GL1 to GLn are classified into logical blocks one by one, and operate in an interlace manner in units of blocks in one frame.

In detail, as illustrated in FIG. 5, the gate lines GL1 to GLn are classified into n (n is a non-zero natural number) logical scan blocks, and each scan block includes a plurality of gate lines. As an example, when six gate lines are included in one scan block, the first scan block is sequentially driven from the first scan block to the nth scan block, and the first scan block is again interlaced with the odd horizontal line 1H, 3H, 5H), and then in order of even-numbered horizontal lines 2H, 4H, and 6H of the same scan line. After that, the second scan block is driven in the above-described order.

If the driving method is substituted into the structure of the liquid crystal cell shown in FIG. 2, the driving method is driven in the order of 1-3-5-2-4-6-7. The R liquid crystal cell of the first data line DL1 and the G liquid crystal cell of the third data line DL3 are weakly charged at the same time, and after driving of the third and fifth gate lines GL3 and GL5, the second gate line As the G liquid crystal cell of the first data line DL1 and the R liquid crystal cell of the second data line DL2 are weakly charged at the same time according to the driving of GL2, all the G liquid crystal cells are weakly charged and are caused by the charging deviation. The vertical line dim will be removed.

The source driver 126 selects reference voltages of the input data in response to control signals input from the timing controller 122, and controls the rotation angle of the liquid crystal molecules by supplying the selected reference voltages to the liquid crystal panel 100.

According to the above-described structure, the liquid crystal display according to the embodiment of the present invention classifies each gate line into a predetermined logical scan block during DRD driving, and interlaces the scan block for each scan block, thereby charging a specific liquid crystal cell. It is possible to improve the luminance difference. Hereinafter, a cell structure of a liquid crystal display device and a method of driving the liquid crystal display device according to the structure will be described with reference to the drawings.

In the following description, the present invention is an example of a liquid crystal display device having a stripe form in which one pixel corresponds to one R, G, B color, and the same R, G, B pixels are arranged in a line for each vertical line. The technical concept of the present invention will be described, but the driving method of the liquid crystal display device of the present invention will be described through a signal flow of one logical scan block for interlaced driving.

6 is a diagram illustrating a cell structure of a liquid crystal display according to a first embodiment of the present invention.

As shown, the liquid crystal display device of the first embodiment of the present invention is a liquid crystal display device having a structure for implementing two horizontal dot inversion driving, in which R, G, and B liquid crystal cells are sequentially arranged, and one data Two liquid crystal cells are connected to the line. In particular, in the horizontal direction, two adjacent liquid crystal cells are connected to different gate lines and are connected to different data lines. Also, in the vertical direction, when one of the two adjacent liquid crystal cells is connected to the odd gate line, the other is connected to the even gate line, and the other is connected to the odd gate line. Structure.

Referring to the driving method of the liquid crystal display device according to the first embodiment of the structure described above, first driving the first horizontal line by supplying a high signal of the gate driving signal to the first gate line (GL1) when driving the two horizontal dots inversion. Enable. In synchronization with this, the positive data signal is supplied to the odd data line DL (2n-1, n is a natural number), and the negative polarity (-) is applied to the even-numbered data line DL (2n, n is a natural number). Supplies a data signal, and weakly charges the odd-numbered liquid crystal cells.

Next, the first horizontal line is disabled by supplying a low signal among the gate driving signals to the first gate line GL1, and the second horizontal line is enabled by supplying a high signal to the third gate line GL3. . In synchronization with this, the positive data signal is supplied to the odd data line DL (2n-1, n is a natural number), and the negative polarity (-) is applied to the even-numbered data line DL (2n, n is a natural number). The data signal is supplied, and the even-numbered liquid crystal cells are strongly charged.

Thereafter, the second horizontal line is disabled by supplying a low signal among the gate driving signals to the third gate line GL3, and the third horizontal line is enabled by supplying a high signal to the fifth gate line GL5. The first liquid crystal cells are weakly charged, and synchronously supply the negative data signal to the odd data line DL (2n-1, n is a natural number) and the even-numbered data line (DL (2n, n is a natural number). ), The positive polarity (+) data signal is supplied to weakly charge the odd-numbered liquid crystal cells.

When the charging is completed to the last horizontal line of the scan block logically divided in the above-described manner, that is, in the present embodiment, the second gate line GL2 of the first horizontal line is checked again for the interlaced scanning operation up to the fourth horizontal line. Able to weakly charge the even-numbered liquid crystal cell.

Accordingly, the odd-numbered G liquid crystal cell previously charged when the first horizontal line is driven and the even-numbered G liquid crystal cell are weakly charged according to the reactivation of the first horizontal line. The phenomenon is eliminated.

Hereinafter, a cell structure and a driving method thereof of a liquid crystal display according to a second exemplary embodiment of the present invention will be described with reference to the drawings.

7 is a diagram illustrating a cell structure of a liquid crystal display according to a second exemplary embodiment of the present invention.

As shown in the drawing, the liquid crystal display device according to the second embodiment of the present invention is a liquid crystal display device having a structure for implementing one dot inversion driving, in which R, G, and B liquid crystal cells are sequentially arranged, and one data line. Two liquid crystal cells are connected to each other. In particular, two liquid crystal cells adjacent to one data line in the horizontal direction are connected to different gate lines, and two liquid crystal cells connected to different data lines are connected to the same gate line.

Also, in the vertical direction, when one of the two adjacent liquid crystal cells is connected to the odd gate line, the other is connected to the even gate line, and the other is connected to the odd gate line. Structure.

Referring to the driving method of the liquid crystal display device according to the second embodiment of this structure, first driving the first horizontal line by supplying a high signal of the gate driving signal to the first gate line (GL1) during 1 dot inversion driving; Able. In synchronization with this, the positive data signal is supplied to the odd data line DL (2n-1, n is a natural number), and the negative polarity (-) is applied to the even-numbered data line DL (2n, n is a natural number). Supplies a data signal, and weakly charges the odd-numbered liquid crystal cells.

Next, the first horizontal line is disabled by supplying a low signal among the gate driving signals to the first gate line GL1, and the second horizontal line is enabled by supplying a high signal to the third gate line GL3. . In synchronization with this, the positive data signal is supplied to the odd data line DL (2n-1, n is a natural number), and the negative polarity (-) is applied to the even-numbered data line DL (2n, n is a natural number). The data signal is supplied, and the even-numbered liquid crystal cells are strongly charged.

Thereafter, the second horizontal line is disabled by supplying a low signal among the gate driving signals to the third gate line GL3, and the third horizontal line is enabled by supplying a high signal to the fifth gate line GL5. The first liquid crystal cells are weakly charged, and synchronously supply the negative data signal to the odd data line DL (2n-1, n is a natural number) and the even-numbered data line (DL (2n, n is a natural number). ), The positive polarity (+) data signal is supplied to weakly charge the odd-numbered liquid crystal cells.

When the charging is completed to the last horizontal line of the scan block logically divided in the above-described manner, that is, in the present embodiment, the second gate line GL2 of the first horizontal line is checked again for the interlaced scanning operation up to the fourth horizontal line. Able to weakly charge the even-numbered liquid crystal cell.

Thus, as in the first embodiment, the weakly charged odd-numbered G liquid crystal cell when the first horizontal line is driven, and the even-numbered G liquid crystal cell are weakly charged according to the current driving of the first horizontal line. Driven.

Hereinafter, a cell structure and a driving method thereof of a liquid crystal display according to a third embodiment of the present invention will be described with reference to the drawings.

8 is a diagram illustrating a cell structure of a liquid crystal display according to a third exemplary embodiment of the present invention.

As shown, the liquid crystal display device of the third embodiment of the present invention is a liquid crystal display device having a structure for implementing two-dot vertical inversion driving, in which R, G, and B liquid crystal cells are sequentially arranged, and one data Two liquid crystal cells are connected to the line. In particular, two liquid crystal cells adjacent to one data line in the horizontal direction are connected to different gate lines, and two liquid crystal cells connected to different data lines are connected to the same gate line.

In addition, in the vertical direction, two liquid crystal cells are alternately connected to the odd or even liquid crystal cells. That is, when two neighboring liquid crystal cells are connected to the odd gate line, both previous or subsequent two liquid crystal cells are connected to the even gate line, and two neighboring liquid crystal cells are connected to the even gate line. In this case, the two previous or subsequent two liquid crystal cells are connected to the odd gate line.

Referring to the driving method of the liquid crystal display device according to the third embodiment of the structure described above, during the vertical two-dot inversion driving, the first horizontal line is supplied by first supplying a high signal among the gate driving signals to the first gate line GL1. Enable. In synchronization with this, the positive data signal is supplied to the odd data line DL (2n-1, n is a natural number), and the negative polarity (-) is applied to the even-numbered data line DL (2n, n is a natural number). Supplies a data signal, and weakly charges the odd-numbered liquid crystal cells.

Next, the first horizontal line is disabled by supplying a low signal among the gate driving signals to the first gate line GL1, and the second horizontal line is enabled by supplying a high signal to the third gate line GL3. . In synchronization with this, the positive data signal is supplied to the odd data line DL (2n-1, n is a natural number), and the negative polarity (-) is applied to the even-numbered data line DL (2n, n is a natural number). The data signal is supplied, and the even-numbered liquid crystal cells are strongly charged.

Thereafter, the second horizontal line is disabled by supplying a low signal among the gate driving signals to the third gate line GL3, and the third horizontal line is enabled by supplying a high signal to the fifth gate line GL5. The first liquid crystal cells are weakly charged, and synchronously supply the negative data signal to the odd data line DL (2n-1, n is a natural number) and the even-numbered data line (DL (2n, n is a natural number). ), The positive polarity (+) data signal is supplied to weakly charge the odd-numbered liquid crystal cells.

When the charging is completed to the last horizontal line of the scan block logically divided in the above-described manner, that is, in the present embodiment, the second gate line GL2 of the first horizontal line is checked again for the interlaced scanning operation up to the fourth horizontal line. Able to weakly charge the even-numbered liquid crystal cell.

Thus, as in the first and second embodiments described above, the weakly charged odd-numbered G liquid crystal cell when the first horizontal line is driven, and the even-numbered G liquid crystal cell are weakly charged according to the current driving of the first horizontal line. , Vertical 2 dot inversion is driven.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

TFT: Switching element LC: Liquid crystal cell
Cst: Capacitor GL1 to GLn: Gate Line
DL1 to DLm: Data line 100: Liquid crystal panel
120: drive circuit portion 121: interface portion
122: timing controller 125: gate driver
126: source driver

Claims (8)

A plurality of gate lines arranged in one direction and two forming one horizontal line;
A plurality of data lines orthogonal to the gate lines;
A liquid crystal panel disposed at orthogonal points of the gate line and the data line, the liquid crystal panel comprising two liquid crystal cells connected to one data line;
One block is divided into n (n is natural numbers) logical scan blocks including a plurality of horizontal lines, and the odd-numbered gate line for the corresponding scan block is pre-driven in 1 / n frame, and the even-numbered gate line is post-driven. DRD drive type liquid crystal display device characterized in that. The method of claim 1,
The liquid crystal cell is connected to two neighboring gate lines and data lines in a horizontal direction,
DRD driving type liquid crystal display device characterized in that the two neighboring in the vertical direction alternately connected to the odd or even gate line. The method of claim 2,
And the liquid crystal panel is a horizontal 2-dot inversion driving device. The method of claim 1,
The liquid crystal cell,
Two neighboring horizontal lines are connected to different gate lines and data lines,
DRD driving type liquid crystal display device characterized in that the two neighboring in the vertical direction alternately connected to the odd or even gate line. The method of claim 4, wherein
The liquid crystal panel is a DRD driving method liquid crystal display, characterized in that for driving one dot inversion. The method of claim 1,
The liquid crystal cell,
Two liquid crystal cells adjacent to one data line in a horizontal direction are connected to different gate lines, and two liquid crystal cells connected to different data lines are connected to the same gate line.
When one of the two adjacent liquid crystal cells in the vertical direction is connected to the odd gate line, the other is connected to the even gate line, the other is connected to the odd gate line DRD drive type liquid crystal display device. The method according to claim 6,
And the liquid crystal panel is a vertical two-dot inversion drive. The method of claim 1,
A gate driver connected to the gate line to supply a gate driving signal; And,
A source driver connected to the data line to supply an image signal
DRD drive type liquid crystal display device comprising a.


KR1020100138212A 2010-12-29 2010-12-29 Drd driving type liquid crystal display KR20120076178A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140129726A (en) * 2013-04-30 2014-11-07 엘지디스플레이 주식회사 Display Device For Low-speed Driving And Driving Method Of The Same
WO2020106066A1 (en) * 2018-11-21 2020-05-28 김태현 Method for driving display

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140129726A (en) * 2013-04-30 2014-11-07 엘지디스플레이 주식회사 Display Device For Low-speed Driving And Driving Method Of The Same
WO2020106066A1 (en) * 2018-11-21 2020-05-28 김태현 Method for driving display
US11367401B2 (en) 2018-11-21 2022-06-21 Taehyun Kim Method for driving display

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