WO2013053116A1 - 液晶显示装置及其信号驱动方法 - Google Patents

液晶显示装置及其信号驱动方法 Download PDF

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Publication number
WO2013053116A1
WO2013053116A1 PCT/CN2011/080721 CN2011080721W WO2013053116A1 WO 2013053116 A1 WO2013053116 A1 WO 2013053116A1 CN 2011080721 W CN2011080721 W CN 2011080721W WO 2013053116 A1 WO2013053116 A1 WO 2013053116A1
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Prior art keywords
sub
pixel
signal
scan
pixels
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PCT/CN2011/080721
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English (en)
French (fr)
Inventor
康志聪
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深圳市华星光电技术有限公司
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Priority to US13/375,447 priority Critical patent/US20130093798A1/en
Publication of WO2013053116A1 publication Critical patent/WO2013053116A1/zh

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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
    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • 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
    • G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
    • 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
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage

Definitions

  • the present invention relates to the field of display, and in particular to a liquid crystal display device and a signal driving method thereof.
  • Overdrive (Over Driving) technology is a technique for improving the display effect of a liquid crystal display panel.
  • Conventional overdrive technology generally compares the front and back image signals to look up the table to find the pre-defined internal difference voltage value to improve the response speed.
  • This method requires the use of a frame buffer (Frame). Buffer) to store the previous image, and then compare with the current image, the above-mentioned predefined internal difference voltage value also needs to be stored in the memory, in addition to the timing controller (Time Control Register, TCON).
  • TCON Time Control Register
  • Fig. 1 The general way of driving the overdrive function by column drive is as shown in Fig. 1.
  • a 5V signal is usually inserted into the original drive signal (the default array common line)
  • the common electrode voltage is unchanged at 5V), which takes one frame of time to charge.
  • the voltage of the gray line of the data line rises to 8V, so that the driving signal of the pixel becomes 5V (this frame cannot be displayed) And need a frame buffer to match it.
  • PVA Plasma Vertical Alignment: Vertical adjustment of the image
  • the present invention provides a liquid crystal display device and a signal driving method thereof that do not need to use a frame buffer and can be overdriven in one frame, so as to solve the prior art liquid crystal display device and its signal driving method cannot be realized in one frame.
  • the present invention constructs a liquid crystal display device comprising: a scan driving module for generating a scan signal; a data driving module for generating a gray scale signal; a plurality of pixels, the pixel comprising a plurality of scan lines and The plurality of data lines are interleaved to form a plurality of sub-pixels; the scan lines are connected to the scan driving module, and each of the scan lines is connected to the sub-pixels in the same row for sequentially in the same row by column
  • the pixel transmits a scan signal; the data line is connected to the data driving module, and each of the data lines is connected to a sub-pixel of the same polarity on both sides thereof for transmitting the gray signal to the sub-pixel; a common line for transmitting a common electrode voltage; in each frame, before the data line transmits the gray scale signal to the sub-pixel, according to a polarity of the sub-pixel and a corresponding to the sub-pixel a common electrode voltage causes the gray signal to precharge the sub-pixel;
  • the present invention constructs a liquid crystal display device comprising: a scan driving module for generating a scan signal; a data driving module for generating a gray scale signal; a plurality of pixels, the pixel comprising a plurality of scan lines and The plurality of data lines are interleaved to form a plurality of sub-pixels; the scan lines are connected to the scan driving module, and each of the scan lines is connected to the sub-pixels in the same row for sequentially in the same row by column
  • the pixel transmits a scan signal; the data line is connected to the data driving module, and each of the data lines is connected to a sub-pixel of the same polarity on both sides thereof for transmitting the gray signal to the sub-pixel; a common line for transmitting a common electrode voltage; in each frame, before the data line transmits the gray scale signal to the sub-pixel, according to a polarity of the sub-pixel and a corresponding to the sub-pixel
  • the common electrode voltage causes the grayscale signal to precharge the secondary
  • the voltage of the pre-charge is controlled by a difference between a voltage of the gradation signal of the data line and the common electrode voltage;
  • the magnitude of the pre-charge voltage is controlled by the difference between the common electrode voltage and the voltage of the gray signal of the data line.
  • the scan signal before transmitting the gradation signal to the sub-pixel, the scan signal is used to turn on a gate of the sub-pixel to pre-process the gradation signal for the sub-pixel Charging.
  • the scan signal is used to turn off the gate of the sub-pixel to cause the sub-pixel to display the gradation signal.
  • the scan signal when the scan signal turns off the gate of the sub-pixel, the scan signal turns on the gate of the next row of sub-pixels and the gradation signal is performed on the next row of sub-pixels Precharged.
  • the waveforms of the common electrode voltages of the adjacent two common lines are symmetrical.
  • Another object of the present invention is to provide a signal driving method of a liquid crystal display device, wherein the liquid crystal display device includes a scan driving module, a data driving module, a scan line, a data line, a common line, and a pixel, and the pixel includes The stripe scan line and the plurality of data lines are interleaved to form a plurality of pixels, the method comprising the steps of: S1, the scan driving module generates a scan signal and transmits the scan signal to the scan line; S2, the data The driving module generates a gray signal and sends the gray signal to the data line; S3, the scan line sends the scan signal to the sub-pixel, and the scan signal is in the same row in column Sub-pixel scanning; S4, the common line is used to transmit a common electrode voltage; S5, the gray signal is made to the sub-pixel according to a polarity of the sub-pixel and a common electrode voltage corresponding to the sub-pixel Precharging is performed, and then the gradation signal is input to the sub-pixel
  • the step S5 includes: when the polarity of the sub-pixel is positive, the difference between the voltage of the gradation signal passing through the data line and the common electrode voltage Controlling a magnitude of the precharged voltage; when the polarity of the secondary pixel is negative, controlling a magnitude of the precharged voltage by a difference between a voltage of the common electrode voltage and a grayscale signal of the data line.
  • the step S5 includes: S51, the scanning signal is used to turn on the gate of the sub-pixel before transmitting the gradation signal to the sub-pixel.
  • the grayscale signal precharges the subpixel.
  • the step S51 includes the following steps: S52. After transmitting the gradation signal to the sub-pixel, the scan signal is used to turn off the gate of the sub-pixel. The sub-pixel is caused to display the gray scale signal.
  • the step S52 includes the following steps: S53.
  • the scan signal turns off the gate of the sub-pixel
  • the scan signal turns on the gate of the next row of sub-pixels
  • the grayscale signal precharges the next row of subpixels.
  • adjacent two sub-pixels have opposite polarities in the scanning time of each frame.
  • the waveforms of the common electrode voltages of the adjacent two common lines are symmetrical.
  • the invention does not need to use a frame buffer on one hand, which saves cost; on the other hand, it does not need to use complicated timing function to overdrive; the third aspect compares the traditional front and rear signal lookup tables.
  • the method of overdriving the method can greatly avoid the phenomenon that the liquid crystal is instantaneously driven to cause an incorrect twist angle.
  • FIG. 1 is a schematic diagram of a column drive overdrive mode in the prior art
  • FIG. 2 is a block diagram of a liquid crystal display device of the present invention.
  • FIG. 3 is a partial schematic view showing an embodiment of a liquid crystal display device of the present invention.
  • FIG. 4 is a schematic view showing signal driving of a liquid crystal display device of the present invention.
  • the liquid crystal display device of the present invention adopts pre-charge (Pre-charge) and array common line (Array) Com)
  • Pre-charge pre-charge
  • Array array common line
  • FIG. 2 is a block diagram of a liquid crystal display device of the present invention.
  • the liquid crystal display device of the present invention includes a scan driving module 204, a data driving module 201, a scan line (gate line) 205, a common line 203, a data line 207, and a plurality of pixels 206.
  • the common line 203 and the data line 207 Parallelly disposed, the common line 203 is disposed perpendicular to the scan line 205.
  • the pixel 206 includes three sub-pixels, and the sub-pixels are not shown in FIG.
  • the scan driving module 204 is configured to generate a scan signal, and the scan signal is sent by the scan driving module 204 to the scan line 205.
  • the data driving module 201 is configured to generate a gray signal, and the gray signal is sent by the data driving module 201.
  • the scan line 205 is connected to the pixel 206. Specifically, each scan line 205 is connected to all the sub-pixels in the same row, and the data line 207 is connected to the pixel 206. Specifically, each data line 207 and the adjacent two columns of pixels 206 In the sub-pixel connection of the same polarity, the common line 203 is connected to the pixel 206. Specifically, each common line 203 is connected to all the sub-pixels in the same column.
  • the data line 207 pre-charges the gradation signal to the sub-pixel according to the polarity of the sub-pixel and the common electrode voltage corresponding to the sub-pixel before inputting the gradation signal to the sub-pixel.
  • FIG. 3 is a partial schematic view showing an embodiment of a liquid crystal display device of the present invention
  • FIG. 4 is a schematic view showing an embodiment of signal driving of the liquid crystal display device of the present invention.
  • each pixel is composed of three sub-pixels (sub-pixel R, sub-pixel G, and sub-pixel B).
  • the scanning signals of the scanning lines sequentially scan the sub-pixels of each row in columns.
  • the data lines (including the data lines 1 and the data lines 2) are arranged in the direction in which the sub-pixel R, the sub-pixel G, and the sub-pixel B are arranged.
  • two adjacent sub-pixels of the same pixel have opposite polarities, and adjacent two sub-pixels of different pixels also have opposite polarities, adjacent to each other.
  • the waveforms of the common electrode voltages of the two common lines are symmetrical.
  • the data lines (including the data lines 1, the data lines 2, and the data lines 3) are connected to the staggered sub-pixels of the same polarity on both sides thereof, specifically, the data lines 1 and the sub-pixels having the positive polarity in the first pixel 310, respectively.
  • R311 and sub-pixel B313 have a positive sub-pixel G322 in the second pixel 320, and a sub-pixel G332 having a positive polarity among the third pixels 330 and a sub-pixel R341 and a sub-pixel B343 having a positive polarity among the fourth pixels 340 are connected.
  • the data lines 2 are respectively connected to the sub-pixels G342 having the negative polarity in the sub-pixel R321, the sub-pixel B323, and the fourth pixel 340 having the negative polarity in the second pixel 320 (other negative-polarity sub-pixels are not shown).
  • the data lines 3 are respectively connected to the sub-pixels R331 and 331 having the negative polarity in the sub-pixel G312 and the third pixel 330 having the negative polarity in the first pixel 310.
  • the common line (including the public line 1 and the common line 2) is connected to the sub-pixel of the same line, specifically, the public line 1 (com 1) connected to the sub-pixel R311, the sub-pixel G312, the sub-pixel B313, and the third pixel 330 in the first pixel 310, the sub-pixel R331, the sub-pixel G332, and the sub-pixel B333, the common line 2 (com 2)
  • the sub-pixel R321, the sub-pixel G322, the sub-pixel B323, and the fourth pixel 340 in the second pixel 320 are connected to the sub-pixel R341, the sub-pixel G342, and the sub-pixel B343.
  • the sub-pixel R311 of the first pixel 310 and the sub-pixel R321 of the second pixel 320 constitute a first row of sub-pixels
  • the sub-pixel G312 of the first pixel 310 and the sub-pixel G322 of the second pixel 320 constitute a second row of sub-pixels.
  • the common line and the data line are arranged in parallel with each other, and the common line and the scan line (gate line) are arranged perpendicular to each other.
  • the voltage of the pre-charge is controlled by the difference between the voltage of the gray signal of the data line and the voltage of the common electrode; when the polarity of the sub-pixel is In the negative case, the magnitude of the precharge voltage is controlled by the difference between the common electrode voltage and the voltage of the gray signal of the data line.
  • the liquid crystal display device of the present invention does not require one frame of time to charge the sub-pixels, because the gradation signals in the same frame are performed on the sub-pixels before the charging voltage in the sub-pixel is changed from 1 V to 3 V.
  • the precharge voltage is changed from 6V to 8V.
  • the charging voltage 1V of the sub-pixel is formed by a voltage difference between the gradation signal 6V and the common electrode signal 5V (sub-pixel is positive) or a voltage difference between the gradation signal 4V and the common electrode signal 5V (sub-pixel is negative).
  • the charging voltage 3V of the sub-pixel is formed by a voltage difference between the gradation signal 8V and the common electrode signal 5V (sub-pixel is positive) or a voltage difference between the gradation signal 2V and the common electrode signal 5V (sub-pixel is negative).
  • the precharge voltage 6V of the sub-pixel is formed by a voltage difference between the gradation signal 6V and the common electrode signal 0V (the secondary pixel is positive polarity) or a voltage difference between the gradation signal 4V and the common electrode signal 10V (the sub-pixel is negative polarity).
  • the precharge voltage 8V of the sub-pixel is formed by a voltage difference between the gradation signal 8V and the common electrode signal 0V (the secondary pixel is positive polarity) or a voltage difference between the gradation signal 2V and the common electrode signal 10V (the sub-pixel is negative polarity).
  • the scan signal turns on the gate of the sub-pixel to cause the gray signal to pre-charge the sub-pixel before transmitting the gray signal to the sub-pixel.
  • the scan line 1 sends a high level signal to the gate of the first row of sub-pixels (including the sub-pixel R311 of the first pixel 310 and the sub-pixel R321 of the pixel 320) to turn on the gate of the first row of sub-pixels, so that the first row
  • the charging voltage of the sub-pixel (including the sub-pixel R311 of the first pixel 310 and the sub-pixel R321 of the second pixel 320) is changed from 1V to 3V, and the gradation signal 8V and the common electrode signal 0V (the sub-pixel is positive) or gray
  • the first line of pixels is precharged with a precharge voltage of 8V (formerly 6V) of the degree signal 2V and the common electrode signal 10V (subpixel is negative).
  • the common electrode voltage of the common line 1 is from 5V to a low voltage of 0V.
  • the sub-pixel R311 of the first pixel 310 is precharged with a high voltage of 8V.
  • the sub-pixel R321 of the second pixel 320 is a negative polarity gradation signal 2V, and the sub-pixel R321 of the second pixel 320 is pre-charged with a high voltage of 8V in cooperation with the common electrode high voltage 10V of the common line 2.
  • the scan signal After transmitting the gradation signal to the sub-pixel, the scan signal is used to turn off the gate of the sub-pixel to cause the sub-pixel to display the gradation signal.
  • the common electrode voltage of the common line 1 is restored from the low voltage 0V to the normal common electrode voltage of 5V and the common electrode voltage of the common line 2 is restored from the high voltage 10V to the normal common electrode voltage of 5V.
  • the sub-pixel R311 of the first pixel 310 and the sub-pixel R321 of the second pixel 320 are restored to the normal pixel charging voltage 3V by the pre-charged 8V high voltage. Thereby, the charging voltage of the normal pixel is increased by increasing the voltage of the precharge.
  • the scan line 1 transmits a low voltage signal to the first row of sub-pixels to turn off the gate of the first row of sub-pixels.
  • the scan signal turns off the gate of the sub-pixel
  • the scan signal turns on the gate of the next row of sub-pixels and the gradation signal pre-charges the next row of sub-pixels.
  • the scan line 2 sends a high level signal to the gate of the second row of sub-pixels (including the sub-pixel G312 of the first pixel 310 and the sub-pixel G322 of the second pixel 320) to turn on the gate of the second row of sub-pixels;
  • Let the charging voltage in the second row of sub-pixels (including the sub-pixel G312 of the first pixel 310 and the sub-pixel G322 of the second pixel 320) be changed from 1V to 3V, using the gradation signal 8V and the common electrode signal 0V (the sub-pixel is The positive polarity) or the gradation signal 2V and the common electrode signal 10V (the sub-pixel is negative) charge voltage 8V to precharge the second row of pixels.
  • the common electrode voltage of the common line 1 is from 5V to a high voltage of 10V.
  • the sub-pixel G312 of the first pixel 310 is precharged with a high voltage of 8V.
  • the sub-pixel G322 of the second pixel 320 is a positive polarity data line 8V, and the sub-pixel R322 of the second pixel 320 is pre-charged with a high voltage of 8V in conjunction with the common electrode voltage 0V of the common line 2.
  • the common electrode voltage of the common line 1 is restored from the high voltage 10V to the normal common electrode voltage of 5V and the common electrode voltage of the common line 2 is restored from the low voltage 0V to the normal common electrode voltage of 5V.
  • the sub-pixel R312 of the first pixel 310 and the sub-pixel R322 of the second pixel 320 are restored to the normal pixel charging voltage 3V by the pre-charged 8V high voltage.
  • the scan line 2 sends a low voltage signal to the second row of sub-pixels to turn off the gate of the second row of sub-pixels; and then, the scan line 3 sends a high level signal to the gate of the third row of sub-pixels to open the third line.
  • the gate of the pixel; and so on, the overdrive function can be implemented in one frame.
  • the liquid crystal display device of the present invention realizes intra-frame pre-driving of sub-pixels by the connection relationship of the sub-pixels with the scan lines, the common lines and the data lines, and the related parameters of the sub-pixels, the scan lines, the common lines, and the data lines, and the specific embodiment
  • the specific voltage in the present invention does not limit the protection range of the present invention, and the liquid crystal display device of the present invention can be applied to pre-drive of gray signals of various voltages.
  • the present invention also relates to a signal driving method of a liquid crystal display device, wherein the liquid crystal display device includes a scan driving module, a data driving module, a scan line, a data line common line, and a pixel, the pixel including a plurality of scan lines and a plurality of lines
  • the data lines are interleaved to form a plurality of pixels, the method comprising the steps of: S1, the scan driving module generates a scan signal and transmits the scan signal to the scan line; S2, the data drive module generates a gray signal And sending the gray signal to the data line; S3, the scan line sends the scan signal to the sub-pixel, the scan signal sequentially scans sub-pixels in the same row in columns; S4
  • the common line is used to transmit a common electrode voltage; S5, the gray signal is pre-charged according to the polarity of the sub-pixel and the common electrode voltage corresponding to the sub-pixel, and then The gradation signal is input to the sub-pixel.
  • step S5 when the polarity of the sub-pixel is positive, the voltage of the pre-charge is controlled by the difference between the voltage of the gray signal of the data line and the voltage of the common electrode; when the sub-pixel When the polarity is negative, the magnitude of the precharge voltage is controlled by the difference between the common electrode voltage and the voltage of the gray signal of the data line.
  • the signal driving method of the liquid crystal display device of the present invention is pre-charged in a frame and an array common line (Array) Com)
  • Array array common line
  • the data line pre-charges the sub-pixels according to the polarity of the sub-pixels and the common electrode voltage corresponding to the sub-pixels before the gradation signals are input to the sub-pixels using the gradation signals. In this way, it is only necessary to change the voltage of the sub-pixel pre-charging to achieve over-driving of the sub-pixels under the gray signal of different voltages in one frame.
  • the step S5 includes: S51, the scan signal is used to turn on the sub-pixel before transmitting the gradation signal to the sub-pixel
  • the gate causes the gray signal to precharge the sub-pixel;
  • S52 after transmitting the gray signal to the sub-pixel, the scan signal is used to turn off the gate of the sub-pixel to The sub-pixel displays the gray signal;
  • S53 when the scan signal turns off the sub-pixel, the scan signal turns on the gate of the next row of sub-pixels and the gray signal pre-stages the next row of sub-pixels Charging.
  • the sub-pixels of different rows are sequentially turned on and off by the scanning lines, so that the pre-driving and display of each sub-pixel are more stable and compact, and the pre-driving in each sub-pixel frame is better realized.

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  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种液晶显示装置及其信号驱动方法。液晶显示装置包括扫描驱动模块（204），用于产生扫描信号；数据驱动模块（201），用于产生灰度信号；多个像素（206），包括由多条扫描线（205）和多条数据线（207）相互交错形成的多个次像素（311...333，321...343）；扫描线（205）与扫描驱动模块（204）连接，每一条扫描线（301...306）与同一行中的次像素（311，321；312，322；...333，343）连接，用于按列依次对处于同一行的次像素（311，321；312，322；...333，343）传输扫描信号；数据线（207）与数据驱动模块（201）连接，每一条数据线（401，402，403）交错的与其两侧的同极性的次像素（311，322，313，341，332，343）连接，用于向次像素（311，322，313，341，332，343）传输灰度信号；公共线（501，502），用于传输共电极电压；在一帧内，数据线（207）向次像素（311...333，321...343）传输灰度信号之前，根据次像素（311...333，321...343）的极性以及与所述次像素（311...333，321...343）对应的共电极电压使灰度信号对次像素(311...333，321...343）进行预充电。

Description

液晶显示装置及其信号驱动方法 技术领域
本发明涉及显示领域，特别是涉及一种液晶显示装置及其信号驱动方法。
 背景技术
过驱动（Over Driving）技术是一种用于改善液晶显示面板显示效果的技术。传统的过驱动技术一般将前后图像信号作查表比较来找出预先定义的内差电压值以提高响应速度，这种做法需要使用帧缓冲器（Frame Buffer）来存储前一图像，然后再与当前图像作比较，上述预先定义的内差电压值也需要存储在内存中，此外还需要定时控制器（Time Control Register，TCON）的配合。
一般的以列驱动实现过驱动功能的方式如图1所示，原像素的驱动信号从1V切换至3V时，为提高响应速度，通常会在原驱动信号中插入5V的信号（默认数组公共线的共电极电压5V不变），这需要耗费一帧的时间来充电，在这一帧中数据线的灰度信号的电压升为8V使得像素的驱动信号变为5V（这一帧无法进行显示），而且需要帧缓冲器与之配合。
以PVA（Patterned Vertical Alignment：图像垂直调整）来看，如果只做一组内差查表，由于为了达到高穿透率而将像素电极中的条状电极间的间距设计成较大，造成液晶瞬时受到驱动而导致扭转角度不正确，于是，当从低灰阶切换到高灰阶时往往会产生所谓犀牛角现象，降低了显示效果。
故，有必要提供一种液晶显示装置及其信号驱动方法，以解决现有技术所存在的问题。
 技术问题
本发明提供一种不需要使用帧缓冲器以及能在一帧内实现过驱动的液晶显示装置及其信号驱动方法，以解决现有技术的液晶显示装置及其信号驱动方法不能在一帧内实现过驱动、需要帧缓冲器来缓存数据以及显示效果不佳的技术问题。
技术解决方案
本发明构造了一种液晶显示装置，其中包括：一扫描驱动模块，用于产生扫描信号；一数据驱动模块，用于产生灰度信号；多个像素，所述像素包括由多条扫描线和多条数据线相互交错形成多个次像素；所述扫描线与所述扫描驱动模块连接，每一条扫描线与同一行中的所述次像素连接，用以按列依次对处于同一行的次像素传输扫描信号；所述数据线与所述数据驱动模块连接，每一条数据线交错的与其两侧的相同极性的次像素相连接，用以向所述次像素传输所述灰度信号；公共线，用以传输共电极电压；在每一帧内，所述数据线向所述次像素传输输入所述灰度信号之前，根据所述次像素的极性以及与所述次像素对应的共电极电压使所述灰度信号对所述次像素进行预充电；当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小；在向所述次像素传输所述灰度信号之前，所述扫描信号用于打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电；在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号；在所述扫描信号关闭所述次像素的栅极时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。
本发明构造了一种液晶显示装置，其中包括：一扫描驱动模块，用于产生扫描信号；一数据驱动模块，用于产生灰度信号；多个像素，所述像素包括由多条扫描线和多条数据线相互交错形成多个次像素；所述扫描线与所述扫描驱动模块连接，每一条扫描线与同一行中的所述次像素连接，用以按列依次对处于同一行的次像素传输扫描信号；所述数据线与所述数据驱动模块连接，每一条数据线交错的与其两侧的相同极性的次像素相连接，用以向所述次像素传输所述灰度信号；公共线，用以传输共电极电压；在每一帧内，所述数据线向所述次像素传输输入所述灰度信号之前，根据所述次像素的极性以及与所述次像素对应的共电极电压使所述灰度信号对所述次像素进行预充电。
在本发明的液晶显示装置中，当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小。
在本发明的液晶显示装置中，在向所述次像素传输所述灰度信号之前，所述扫描信号用于打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电。
在本发明的液晶显示装置中，在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号。
在本发明的液晶显示装置中，在所述扫描信号关闭所述次像素的栅极时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。
在上述的液晶显示装置中，在每一帧的扫描时间内相邻的两个次像素具有相反的极性。
在上述的液晶显示装置中，相邻的两条公共线的共电极电压的波形相对称。
本发明的另一个目的在于提供一种液晶显示装置的信号驱动方法，其中所述液晶显示装置包括扫描驱动模块、数据驱动模块、扫描线、数据线、公共线以及像素，所述像素包括由多条扫描线和多条数据线相互交错形成多个像素，所述方法包括以下步骤：S1、所述扫描驱动模块产生扫描信号并将所述扫描信号发送给所述扫描线；S2、所述数据驱动模块产生灰度信号并将所述灰度信号发送给所述数据线；S3、所述扫描线将所述扫描信号发送给所述次像素，所述扫描信号按列依次对处于同一行的次像素进行扫描；S4、所述公共线用以传输一共电极电压；S5、根据所述次像素的极性以及与所述次像素对应的共电极电压使所述灰度信号对所述次像素进行预充电，然后将所述灰度信号输入到所述次像素。
在上述的液晶显示装置的信号驱动方法中，所述步骤S5包括：当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小。
在上述的液晶显示装置的信号驱动方法中，所述步骤S5包括：S51、在向所述次像素传输所述灰度信号之前，所述扫描信号用于打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电。
在上述的液晶显示装置的信号驱动方法中，所述步骤S51之后包括步骤：S52、在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号。
在上述的液晶显示装置的信号驱动方法中，所述步骤S52之后包括步骤：S53、在所述扫描信号关闭所述次像素的栅极时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。
在上述的液晶显示装置的信号驱动方法中，在每一帧的扫描时间内相邻的两个次像素具有相反的极性。
在上述的液晶显示装置的信号驱动方法中，相邻的两条公共线的共电极电压的波形相对称。
 有益效果
相对于现有技术，本发明一方面不需要使用帧缓冲器，节约了成本；另一方面，不需要使用复杂的定时功能来进行过驱动；第三方面，比较传统的将前后信号查表比较以进行过驱动的方法，本方法能大大避免液晶瞬时受到驱动而造成扭转角度不正确的现象的发生。
 附图说明
图1为现有技术中列驱动的过驱动方式的示意图；
图2为本发明的液晶显示装置的框图；
图3为本发明的液晶显示装置的实施例的局部示意图；
图4为本发明的液晶显示装置信号驱动的示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
在图中，结构相似的单元是以相同标号表示。
本发明的液晶显示装置通过帧（Frame）内预充电（Pre-charge）及数组公共线（Array com）高低电平信号的配合，在每个灰度信号写入到像素前都使用一高电压对像素先行预充电，相当于在灰度信号写入到像素前进行过驱动（Over Driving）。
参考图2，图2为本发明的液晶显示装置的框图。本发明的液晶显示装置包括扫描驱动模块204、数据驱动模块201、扫描线（栅极线）205、公共线203、数据线207以及多个像素206，图2中，公共线203与数据线207平行设置，公共线203与扫描线205垂直设置。该像素206包括三个次像素，图2中未示出次像素。扫描驱动模块204用于产生扫描信号，该扫描信号由该扫描驱动模块204发送给所述扫描线205，数据驱动模块201用于产生灰度信号，该灰度信号被该数据驱动模块201发送给所述资料线207。扫描线205与像素206连接，具体地，每条扫描线205与同一行中的所有次像素连接，数据线207与像素206连接，具体地，每条数据线207与相邻两列的像素206中的相同极性的次像素连接，公共线203与像素206连接，具体地，每条公共线203与同一列中所有次像素连接。数据线207在向次像素输入灰度信号之前根据次像素的极性以及所述次像素对应的共电极电压使灰度信号对次像素进行预充电。
参考图3和图4，图3为本发明的液晶显示装置的实施例的局部示意图，图4为本发明的液晶显示装置信号驱动的实施例的示意图。在本实施例中，每一像素是由三个的次像素（次像素R、次像素G和次像素B）组成。在本发明的液晶显示装置中，扫描线的扫描信号按列依次对每行的次像素进行扫描。数据线（包括数据线1和数据线2）按次像素R、次像素G和次像素B排列的方向设置。在本实施例中，在每一帧的扫描时间内，同一像素的相邻的两个次像素具有相反的极性，不同像素的相邻的两个次像素也具有相反的极性，相邻的两条公共线的共电极电压的波形相对称。
数据线（包括数据线1、数据线2以及数据线3）与交错的与其两侧的相同极性的次像素连接，具体地，数据线1分别与第一像素310中具有正极性的次像素R311、次像素B313，第二像素320中具有正极性的次像素G322，第三像素330中具有正极性的次像素G332和第四像素340中具有正极性的次像素R341、次像素B343连接。数据线2分别与第二像素320中具有负极性的次像素R321、次像素B323和第四像素340中具有负极性的次像素G342连接（其它的负极性的次像素未示出）。数据线3分别与第一像素310中具有负极性的次像素G312和第三像素330中具有负极性的次像素R331、次像素B333连接。
公共线（包括公共线1和公共线2）与同一行的次像素连接，具体地，公共线1（com 1）与第一像素310中的次像素R311、次像素G312、次像素B313和第三像素330中的次像素R331、次像素G332、次像素B333连接，公共线2（com 2）与第二像素320中的次像素R321、次像素G322、次像素B323和第四像素340中的次像素R341、次像素G342、次像素B343连接。
第一像素310的次像素R311与第二像素320的次像素R321组成第一行次像素，第一像素310的次像素G312与第二像素320的次像素G322组成第二行次像素，依此类推。公共线和资料线为相互平行设置，公共线和扫描线（栅极线）为相互垂直设置。
当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小。
图4中，本发明的液晶显示装置不需要耗费一帧的时间来给次像素充电，因为在次像素内的充电电压由1V变成3V之前，同一帧内的灰度信号对次像素所进行的预充电的电压由6V变成8V。上述次像素的充电电压1V是由灰度信号6V与共电极信号5V（次像素为正极性）的电压差或者灰度信号4V与共电极信号5V（次像素为负极性）的电压差形成的。次像素的充电电压3V是由灰度信号8V与共电极信号5V（次像素为正极性）的电压差或者灰度信号2V与共电极信号5V（次像素为负极性）的电压差形成的。次像素的预充电电压6V是由灰度信号6V与共电极信号0V（次像素为正极性）的电压差或者灰度信号4V与共电极信号10V（次像素为负极性）的电压差形成的。次像素的预充电电压8V是由灰度信号8V与共电极信号0V（次像素为正极性）的电压差或者灰度信号2V与共电极信号10V（次像素为负极性）的电压差形成的。
在向所述次像素传输所述灰度信号之前，所述扫描信号打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电。扫描线1向第一行次像素（包括第一像素310的次像素R311、像素320的次像素R321）的栅极发送高电平信号以打开第一行次像素的栅极，让第一行次像素（包括第一像素310的次像素R311、第二像素320的次像素R321）的充电电压由1V变成3V前，利用灰度信号8V与共电极信号0V（次像素为正极性）或者灰度信号2V与共电极信号10V（次像素为负极性）的预充电电压8V（原为6V）来给第一行次像素进行预充电。当扫描线1向第一行次像素的栅极发送高电平信号时，由于第一像素310的次像素R311正极性灰度信号8V，配合公共线1的共电极电压由5V至低电压0V，对第一像素310的次像素R311预充一8V高电压。于此同一时间，第二像素320的次像素R321是负极性灰度信号2V，配合公共线2的共电极高电压10V，对第二像素320的次像素R321预充一8V高电压。
在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号。公共线1的共电极电压由低电压0V回复到正常共电极电压5V且公共线2的共电极电压由高电压10V回复到正常共电极电压5V。此时，第一像素310的次像素R311及第二像素320的次像素R321便由预充8V高电压回复到正常像素充电电压3V。从而通过提高预充电的电压提高了正常像素的充电电压。接着，扫描线1向第一行次像素发送低电压信号以关闭第一行次像素的栅极。
在所述扫描信号关闭所述次像素的栅极时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。扫描线2向第二行次像素（包括第一像素310的次像素G312、第二像素320的次像素G322）的栅极发送高电平信号以打开第二行次像素的栅极；同样，让第二行次像素（包括第一像素310的次像素G312、第二像素320的次像素G322）内的充电电压由1V变成3V前，利用灰度信号8V与共电极信号0V（次像素为正极性）或者灰度信号2V与共电极信号10V（次像素为负极性）的充电电压8V来给第二行次像素进行预充电。当扫描线2向第二行次像素的栅极发送高电平信号时，由于第一像素310的次像素G312是负极性数据线2V，配合公共线1的共电极电压由5V至高电压10V，对第一像素310的次像素G312预充一8V高电压。同时，第二像素320的次像素G322是正极性数据线8V，配合公共线2的共电极电压0V，对第二像素320的次像素R322预充一8V高电压。
紧接着，公共线1的共电极电压由高电压10V回复到正常共电极电压5V且公共线2的共电极电压由低电压0V回复到正常共电极电压5V。此时，第一像素310的次像素R312及第二像素320的次像素R322便由预充8V高电压回复到正常像素充电电压3V。扫描线2向第二行次像素发送低电压信号以关闭第二行次像素的栅极；再接着，扫描线3向第三行次像素的栅极发送高电平信号一打开第三行次像素的栅极；依此类推，便可在一帧内实现过驱动功能。
本发明的液晶显示装置通过次像素分别与扫描线、公共线和资料线的连接关系以及次像素、扫描线、公共线以及数据线的相关参数实现了次像素的帧内预驱动，具体实施例中的具体电压并不限制本发明的保护范围，本发明的液晶显示装置可适用于各种电压的灰度信号的预驱动。
本发明还涉及一种液晶显示装置的信号驱动方法，其中的液晶显示装置包括扫描驱动模块、数据驱动模块、扫描线、数据线公共线以及像素，所述像素包括由多条扫描线和多条数据线相互交错形成多个像素，所述方法包括以下步骤：S1、所述扫描驱动模块产生扫描信号并将所述扫描信号发送给所述扫描线；S2、所述数据驱动模块产生灰度信号并将所述灰度信号发送给所述资料线；S3、所述扫描线将所述扫描信号发送给所述次像素，所述扫描信号按列依次对处于同一行的次像素进行扫描；S4、所述公共线用以传输一共电极电压；S5、根据所述次像素的极性以及与所述次像素对应的共电极电压使所述灰度信号对所述次像素进行预充电，然后将所述灰度信号输入到所述次像素。其中步骤S5中当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小。
本发明的液晶显示装置的信号驱动方法通过帧（Frame）内预充电（Pre-charge）及数组公共线（Array com）高低电平信号的配合，在每个灰度信号写入到像素前都使用一高电压对像素先行预充电，相当于在灰度信号写入到像素前进行过驱动（Over Driving）。具体的，数据线在向次像素输入灰度信号之前根据次像素的极性以及所述次像素对应的共电极电压使用灰度信号对次像素进行预充电。这样只需要通过更改次像素预充电的电压即可在一帧内实现次像素在不同电压的灰度信号下的过驱动。
作为本发明的液晶显示装置的信号驱动方法的优选实施例，所述步骤S5包括：S51、在向所述次像素传输所述灰度信号之前，所述扫描信号用于打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电；S52、在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号；S53、在所述扫描信号关闭所述次像素时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。
通过上述的方法实现了不同行的次像素被扫描线依次打开关闭，使得每个次像素的预驱动、显示更加稳定以及紧凑，更好地实现每个次像素帧内的预驱动。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
 本发明的实施方式
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Claims (15)

  1. 一种液晶显示装置，其特征在于，包括：
    一扫描驱动模块，用于产生扫描信号；
    一数据驱动模块，用于产生灰度信号；
    多个像素，所述像素包括由多条扫描线和多条数据线相互交错形成多个次像素；
    所述扫描线与所述扫描驱动模块连接，每一条扫描线与同一行中的所述次像素连接，用以按列依次对处于同一行的次像素传输扫描信号；
    所述数据线与所述数据驱动模块连接，每一条数据线交错的与其两侧的相同极性的次像素相连接，用以向所述次像素传输所述灰度信号；
    公共线，用以传输共电极电压；
    在每一帧内，所述数据线向所述次像素传输输入所述灰度信号之前，根据所述次像素的极性以及与所述次像素对应的共电极电压使所述灰度信号对所述次像素进行预充电；
    当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小；
    在向所述次像素传输所述灰度信号之前，所述扫描信号用于打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电；
    在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号；
    在所述扫描信号关闭所述次像素的栅极时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。
  2. 一种液晶显示装置，其特征在于，包括：
    一扫描驱动模块，用于产生扫描信号；
    一数据驱动模块，用于产生灰度信号；
    多个像素，所述像素包括由多条扫描线和多条数据线相互交错形成多个次像素；
    所述扫描线与所述扫描驱动模块连接，每一条扫描线与同一行中的所述次像素连接，用以按列依次对处于同一行的次像素传输扫描信号；
    所述数据线与所述数据驱动模块连接，每一条数据线交错的与其两侧的相同极性的次像素相连接，用以向所述次像素传输所述灰度信号；
    公共线，用以传输共电极电压；
    在每一帧内，所述数据线向所述次像素传输输入所述灰度信号之前，根据所述次像素的极性以及与所述次像素对应的共电极电压使所述灰度信号对所述次像素进行预充电。
  3. 根据权利要求2所述的液晶显示装置，其特征在于，当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小。
  4. 根据权利要求2所述的液晶显示装置，其特征在于，在向所述次像素传输所述灰度信号之前，所述扫描信号用于打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电。
  5. 根据权利要求4所述的液晶显示装置，其特征在于，在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号。
  6. 根据权利要求5所述的液晶显示装置，其特征在于，在所述扫描信号关闭所述次像素的栅极时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。
  7. 根据权利要求2所述的液晶显示装置，其特征在于，在每一帧的扫描时间内相邻的两个次像素具有相反的极性。
  8. 根据权利要求2所述的液晶显示装置，其特征在于，相邻的两条公共线的共电极电压的波形相对称。
  9. 一种液晶显示装置的信号驱动方法，其特征在于，所述液晶显示装置包括扫描驱动模块、数据驱动模块、扫描线、数据线、公共线以及像素，所述像素包括由多条扫描线和多条数据线相互交错形成多个像素，所述方法包括以下步骤：
    S1、所述扫描驱动模块产生扫描信号并将所述扫描信号发送给所述扫描线；
    S2、所述数据驱动模块产生灰度信号并将所述灰度信号发送给所述数据线；
    S3、所述扫描线将所述扫描信号发送给所述次像素，所述扫描信号按列依次对处于同一行的次像素进行扫描；
    S4、所述公共线用以传输一共电极电压；
    S5、根据所述次像素的极性以及与所述次像素对应的共电极电压使所述灰度信号对所述次像素进行预充电，然后将所述灰度信号输入到所述次像素。
  10. 根据权利要求9所述的液晶显示装置的信号驱动方法，其特征在于，所述步骤S5包括：当所述次像素的极性为正时，通过所述数据线的灰度信号的电压和所述共电极电压的差值控制所述预充电的电压大小；当所述次像素的极性为负时，通过所述共电极电压和所述数据线的灰度信号的电压的差值控制所述预充电的电压大小。
  11. 根据权利要求9所述的液晶显示装置的信号驱动方法，其特征在于，所述步骤S5包括：
    S51、在向所述次像素传输所述灰度信号之前，所述扫描信号用于打开所述次像素的栅极使所述灰度信号对所述次像素进行预充电。
  12. 根据权利要求11所述的液晶显示装置的信号驱动方法，其特征在于，所述步骤S51之后包括步骤：
    S52、在向所述次像素传输所述灰度信号之后，所述扫描信号用于关闭所述次像素的栅极使所述次像素显示所述灰度信号。
  13. 根据权利要求12所述的液晶显示装置的信号驱动方法，其特征在于，所述步骤S52之后包括步骤：
    S53、在所述扫描信号关闭所述次像素的栅极时，所述扫描信号打开下一行次像素的栅极并且所述灰度信号对所述下一行次像素进行预充电。
  14. 根据权利要求9所述的液晶显示装置的信号驱动方法，其特征在于，在每一帧的扫描时间内相邻的两个次像素具有相反的极性。
  15. 根据权利要求9所述的液晶显示装置的信号驱动方法，其特征在于，相邻的两条公共线的共电极电压的波形相对称。
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