WO2013010345A1 - 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
WO2013010345A1
WO2013010345A1 PCT/CN2011/078954 CN2011078954W WO2013010345A1 WO 2013010345 A1 WO2013010345 A1 WO 2013010345A1 CN 2011078954 W CN2011078954 W CN 2011078954W WO 2013010345 A1 WO2013010345 A1 WO 2013010345A1
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Prior art keywords
sub
pixel
pixels
signal
scan
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English (en)
French (fr)
Inventor
康志聪
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US13/375,474 priority Critical patent/US20130021315A1/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
    • G09G3/3648—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
    • 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 a display device, and more particularly to a liquid crystal display device.
  • the present invention also relates to a signal driving method, and more particularly to a signal driving method of a liquid crystal display device.
  • 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
  • the pitch between the strip electrodes in the pixel electrode is designed to be large in order to achieve high transmittance, and the liquid crystal is instantaneously driven to cause the twist angle to be incorrect. Therefore, when switching from a low gray level to a high gray level, a so-called rhino horn phenomenon is often generated, which reduces the display effect.
  • An object of the present invention is to provide a liquid crystal display device and a signal driving method of the liquid crystal display device In order to solve the technical problem in the prior art that the overdrive cannot be implemented in one frame and the frame buffer is needed to buffer the data and the display effect is poor.
  • the present invention constructs a liquid crystal display device comprising: a scan driving module for generating a scan signal and transmitting the scan signal to the scan line; and a data driving module for generating a data signal and transmitting the data signal a data line; a thin film transistor array panel having pixels disposed thereon, the pixels including a sub-pixel R, a sub-pixel G, and a sub-pixel B; and a scan line coupled to a sub-pixel of the pixel
  • the scan signal sequentially scans the sub-pixels in the same row in the column longitudinal direction; the data line is coupled to at least one of the pixels, the data line is used to be the data signal The sub-pixel is pre-charged before being input into the sub-pixel; the common line is coupled to a sub-pixel of the pixel for using a polarity of the sub-pixel coupled thereto
  • the sub-pixels are applied with a high voltage or a low voltage; the sub-pixels having the same polarity are arranged in the same column, and the common line
  • the scan signal is used to turn off the sub-pixel during a time period when the data signal is precharged to the sub-pixel and the data signal is written between the sub-pixels The gate.
  • the scan signal turns on the gate of the next column of sub-pixels when the scan signal turns off the sub-pixel and the data signal precharges the next column of sub-pixels.
  • the present invention constructs a liquid crystal display device comprising: a scan driving module for generating a scan signal and transmitting the scan signal to the scan line; and a data driving module for generating a data signal and transmitting the data signal a data line; a thin film transistor array panel having pixels disposed thereon, the pixels including a sub-pixel R, a sub-pixel G, and a sub-pixel B; and a scan line coupled to a sub-pixel of the pixel
  • the scan signal sequentially scans the sub-pixels in the same row in the column longitudinal direction; the data line is coupled to at least one of the pixels, the data line is used to be the data signal The sub-pixel is pre-charged before being input into the sub-pixel; the common line is coupled to a sub-pixel of the pixel for using a polarity of the sub-pixel coupled thereto
  • the sub-pixels are applied with a high voltage or a low voltage; the sub-pixels having the same polarity are arranged in the same column, and the common line
  • the scan signal is used to turn on the gate of the sub-pixel to allow the data signal to pre-charge the sub-pixel.
  • the scan signal is used to turn off the sub-pixel during a time period in which the data signal is precharged to the sub-pixel and the data signal is written to the sub-pixel Gate.
  • the scan signal when the scan signal turns off the sub-pixel, the scan signal turns on the gate of the next column of sub-pixels and the data signal precharges the next column of sub-pixels.
  • the three sub-pixels of the pixel have the same polarity, and the three sub-pixels of the pixel are arranged in a direction parallel to the scanning direction of the scanning signal.
  • the sub-pixels of two adjacent columns have opposite polarities.
  • the present invention constructs a signal driving method for a liquid crystal display device, the liquid crystal display device comprising a scan driving module, a data driving module, a thin film transistor array panel, a scan line and a data line, and the thin film transistor array panel is provided with a pixel.
  • the pixel includes a sub-pixel R, a sub-pixel G, and a sub-pixel B.
  • the sub-pixels having the same polarity are arranged in the same column, and the common line is coupled to the sub-pixels of the same polarity, and the method includes The following steps: (A), the scan driving module generates a scan signal and sends the scan signal to the scan line; (B), the data drive module generates a data signal and sends the data signal to the data line; C), the scan line couples the scan signal with the sub-pixels in the pixel, the scan signal sequentially scans the sub-pixels in the same row in the column longitudinal direction; (D), the data line sends the data line Giving at least one of the pixels, the data line precharging the sub-pixel before inputting the data signal into the sub-pixel; (E) The polarity is applied to the common line coupled thereto sub-pixel to sub-pixel to the high voltage or a low voltage; (F), the data signals on the sub-pixel is precharged in accordance with the polarity of the sub-pixel.
  • the method further includes the step of: (G), before the data signal is written to the sub-pixel, the scan signal turns on the gate of the sub-pixel to The data signal is pre-charged to the sub-pixel.
  • the method further includes the steps of: (H), precharging the data signal to the sub-pixel, and writing the data signal between the sub-pixels
  • the scan signal turns off the gate of the sub-pixel.
  • the method further includes the following steps: (I), when the scan signal turns off the sub-pixel, the scan signal turns on the gate of the next column of sub-pixels and The data signal precharges the next column of subpixels.
  • the invention does not need to use a frame buffer on the one hand, which saves cost; on the other hand, it does not need to use complicated timing function to overdrive; the third aspect, if the traditional front and rear signals are used
  • the table comparison can greatly prevent the phenomenon that the liquid crystal is instantaneously driven to cause the twist angle to be incorrect when the drive is overdriven.
  • 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 a first preferred embodiment of a liquid crystal display device of the present invention.
  • FIG. 4 is a schematic view showing a first preferred embodiment of signal driving of the liquid crystal display device of the present invention.
  • the liquid crystal display device of the present invention adopts a pre-charge in a frame and an array common line (Array) Com)
  • 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 thin film transistor array panel 202, a common line 205, a scanning line (gate line) 203, and a data line 207.
  • the scanning line 203 and the data line 207 vertical setting.
  • the thin film transistor array panel 202 is provided with a pixel 206, which 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, which is sent by the scan driving module 204 to the scan line 203, and the data driving module 201 is configured to generate a data signal, and the data signal is sent by the data driving module 201 to the Data line 207.
  • the scan line 203 is coupled to the pixel 206. Specifically, the scan line 203 is coupled to the pixel 206, and the data line 207 is coupled to the pixel 206. Specifically, the data line 207 is coupled to at least one sub-pixel of the pixel 206.
  • 205 is coupled to pixel 206, and in particular, common line 205 is coupled to at least one of the pixels 206.
  • FIG. 3 is a partial schematic view of a first preferred embodiment of a liquid crystal display device of the present invention
  • FIG. 4 is a schematic view showing a first preferred embodiment of signal driving of the liquid crystal display device of the present invention.
  • the pixel is composed of three sub-pixels (sub-pixel R, sub-pixel G, and sub-pixel B).
  • the scanning signal of the scanning line sequentially scans each pixel in the thin film transistor array panel in the column longitudinal direction.
  • the sub-pixel R, the sub-pixel G, and the sub-pixel B are arranged in a direction parallel to the scanning direction of the scanning signal.
  • the data lines (including the data lines 1, the data lines 2, the data lines 3, the data lines 4, the data lines 5, and the data lines 6) are arranged in a direction perpendicular to the common line.
  • the sub-pixels of the same column of the thin film transistor panel have the same polarity, that is, the three sub-pixels of each pixel have the same polarity.
  • the sub-pixels of the adjacent two columns have opposite polarities.
  • the data lines (including the data lines 1 and the data lines 2, the data lines 3, the data lines 4, the data lines 5, and the data lines 6) are coupled to the sub-pixels of the same row.
  • the data lines 1 and the first pixels 310 have The sub-pixel B 311 having the negative polarity of the positive sub-pixel B 311 and the third pixel 330 are coupled, and the sub-pixel G312 having the positive polarity and the sub-pixel having the negative polarity among the third pixel 330 in the first pixel 310 G332 is coupled.
  • the common lines (including the common line 1 and the common line 2) are disposed in a direction parallel to the scanning direction of the scanning signal, and are arranged in an array.
  • the sub-pixel B311, the sub-pixel G312, the sub-pixel R313, and the sub-pixel B321, the sub-pixel G322, and the sub-pixel R323 of the second pixel 320 constitute a first sub-pixel
  • the sub-pixel B341, the sub-pixel G342, and the sub-pixel R343 of the pixel G332, the sub-pixel R333, and the fourth pixel 340 constitute a second sub-pixel, and so on.
  • the common line is coupled to the sub-pixels of the same column, that is, the common line is coupled to the sub-pixels having the same polarity, specifically, the common line 1 (com 1) a sub-pixel R321, a sub-pixel G322, and a sub-pixel B323 each having a positive polarity in each of the sub-pixel R311, the sub-pixel G312, the sub-pixel B313, and the second pixel 320 having the positive polarity in the first pixel 310 are coupled to each other.
  • Line 2 (com 2)
  • the sub-pixel R331, the sub-pixel G332, the sub-pixel B333, and the sub-pixel R341, the sub-pixel G342, and the sub-pixel B343 of the fourth pixel 340 are coupled.
  • the liquid crystal display device of the present invention does not require a frame time to charge the pixels because the data signals in the same frame have been utilized to charge the pixels before the voltage in the pixels becomes 3V.
  • the gate line pre-transmits a gate signal to the gate of the first column of sub-pixels to open the first column before writing a gate signal (scanning signal) for the correct data signal to be written to the first column of sub-pixels
  • the gate of the sub-pixel, the data line is precharged into the first column of sub-pixels, and then the first column of sub-pixels is turned off under the control of the gate signal sent by the scan line, and then the gate line is turned to the first column
  • the pixel sends a gate signal to turn on the gate of the first column of sub-pixels, at which point the correct data signal will be written into the first column of sub-pixels.
  • the sub-pixels of the same column have the same polarity, and the common line is coupled to the sub-pixels having the same polarity, the sub-pixels coupled to the common line 1 and having the same polarity in the first column of sub-pixels have the first pixel.
  • the sub-pixel B311, the sub-pixel G312, the sub-pixel R313, and the sub-pixel B321, the sub-pixel G322, and the sub-pixel R323 of the second pixel 320 of 310 are positive in polarity of the first sub-pixel, and are low in the common line 1. With the cooperation of 0V, the first column of sub-pixels is charged with a high voltage.
  • the second set of gate signals will send a gate signal to the second column of sub-pixels to turn on the gates of the second column of sub-pixels to perform the second column of sub-pixels. Precharged.
  • the data signal precharges each column of sub-pixels according to the polarity of each column of sub-pixels.
  • the data signal on the data line is used to pre-charge the second sub-pixel, specifically, the gate line is gated to the second sub-pixel.
  • the pole sends a high level signal to turn on the gate of the second column of sub-pixels, and the data signal on the data line is precharged into the second column of sub-pixels.
  • the gate line is written to the second for the correct data signal.
  • Presetting a gate signal to the gate of the second column of sub-pixels before transmitting a gate signal to open the gate of the second column of sub-pixels pre-charging the data signal on the data line to the second column In the pixel, then the second column of sub-pixels closes the gate, and then the gate line sends a gate signal to the second column of sub-pixels to open the gate of the second column of sub-pixels.
  • the correct data signal will be written. Go to the second column of subpixels.
  • the polarity of the second column of sub-pixels is the same as the polarity of the data signal. Since the sub-pixels coupled to the common line 2 and having the same polarity in the second column of sub-pixels have the sub-pixel B331, the sub-pixel G332, the sub-pixel R333, and the sub-pixel B341 of the fourth pixel 340 of the third pixel 330, The pixel G342 and the sub-pixel R343.
  • the polarity of the second sub-pixel is negative, and a high voltage is applied to the second sub-pixel under the cooperation of the high level 10V of the common line 2.
  • the third set of gate signals will send a gate signal to the third column of sub-pixels to turn on the gates of the third column of sub-pixels.
  • the overdrive function can be implemented in one frame.
  • the common lines 1 and 2 are transmitted at a high level or a low level in accordance with the polarity of the sub-pixel.
  • the signal driving method of the liquid crystal display device of the present invention comprises the steps of: the scan driving module 204 generates a scan signal and transmits the scan signal to the scan line 203; the data driving module 201 generates a data signal and the data signal The scan line 203 sends the scan signal to the coupled sub-pixels in the pixel 206.
  • the scan signal sequentially scans the sub-pixels in the same row in the column longitudinal direction; the data line 207 sends the data signal to the pixel 206.
  • the data line 207 pre-charges the sub-pixel before inputting the data signal into the sub-pixel; the common line 205 applies a high voltage or a low voltage to the sub-pixel according to the polarity of the sub-pixel coupled thereto
  • the data signal pre-charges the sub-pixel according to the polarity of the sub-pixel; before the correct data signal is written to the sub-pixel, the scan signal turns on the gate of the sub-pixel to allow the data signal to pre-stage the sub-pixel Charging; during the time when the data signal is precharged to the sub-pixel and the correct data signal is written to the sub-pixel, Close the gate signal described sub-pixel; when the signal turns off the sub-pixel scanning, the scanning gate signal to open the next column sub-pixel and the data signal to a next column subpixel precharged.

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Abstract

一种液晶显示装置，该液晶显示装置通过帧内预充电及阵列公共线高低电平信号的配合，在每个数据信号写入到像素前都对像素先行充电一高电压，相当于在数据信号写入到像素前进行过驱动。一种液晶显示装置的信号驱动方法。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，在使用传统的将前后信号查表比较以进行过驱动时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。

Description

液晶显示装置及其信号驱动方法 技术领域
本发明涉及一种显示装置，特别是涉及一种液晶显示装置。
本发明还涉及一种信号驱动方法，特别是涉及一种液晶显示装置的信号驱动方法。
 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存储器中，此外还需要定时控制器（Time Control Register， TCON）的配合。
一般的以列驱动（Row Driving）实现过驱动功能的方式如图1所示，当公共线共电极电压设定5V，原信号从1V（正负极性电压分别为6V/4V）切换至3V（正负极性电压分别为8V/2V），为提高响应速度，通常会在原信号中插入5V（正负极性电压分别为10V/0V）的信号。当像素内的电压由1V变成3V时需要耗费一帧的时间来充电，使之得到5V的电压。
以PVA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
本发明的一个目的在于提供一种液晶显示装置及液晶显示装置的信号驱动方法 ，以解决现有技术中不能在一帧内实现过驱动和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，包括：扫描驱动模块，用于产生扫描信号并将所述扫描信号发送给所述扫描线；数据驱动模块，用于产生数据信号并将所述数据信号发送给所述数据线；薄膜晶体管阵列面板，其上设有像素，所述像素包括次像素R、次像素G和次像素B；扫描线，所述扫描线与所述像素中的次像素耦接，所述扫描信号对处于同一行的次像素按列纵向依次扫描；数据线，所述数据线与所述像素中的至少一个次像素耦接，所述数据线用于在将所述数据信号输入到所述次像素中之前对所述次像素进行预充电；公共线，所述公共线与所述像素中的次像素耦接，用于根据与其耦接的所述次像素的极性向所述次像素施加高电压或低电压；具有相同极性的所述次像素排列在同一列，所述公共线与相同极性的所述次像素耦接；所述数据信号用于根据所述次像素的极性对所述次像素进行预充电；所述扫描信号用于在数据信号写入到所述次像素之前打开所述次像素的栅极以让所述数据信号对所述次像素进行预充电；所述像素的三个所述次像素具有相同的极性，所述像素的三个所述次像素按与所述扫描信号的扫描方向平行的方向排列；相邻两列的所述次像素具有相反的极性。
在本发明的液晶显示装置中，在所述数据信号预充电到所述次像素和所述数据信号写入到所述次像素之间的时间里，所述扫描信号用于关闭所述次像素的栅极。
在本发明的液晶显示装置中，所述扫描信号在所述扫描信号关闭所述次像素时打开下一列次像素的栅极并且所述数据信号对所述下一列次像素进行预充电。
本发明构造了一种液晶显示装置，包括：扫描驱动模块，用于产生扫描信号并将所述扫描信号发送给所述扫描线；数据驱动模块，用于产生数据信号并将所述数据信号发送给所述数据线；薄膜晶体管阵列面板，其上设有像素，所述像素包括次像素R、次像素G和次像素B；扫描线，所述扫描线与所述像素中的次像素耦接，所述扫描信号对处于同一行的次像素按列纵向依次扫描；数据线，所述数据线与所述像素中的至少一个次像素耦接，所述数据线用于在将所述数据信号输入到所述次像素中之前对所述次像素进行预充电；公共线，所述公共线与所述像素中的次像素耦接，用于根据与其耦接的所述次像素的极性向所述次像素施加高电压或低电压；具有相同极性的所述次像素排列在同一列，所述公共线与相同极性的所述次像素耦接；所述数据信号用于根据所述次像素的极性对所述次像素进行预充电。
在本发明的液晶显示装置中，在数据信号写入到所述次像素之前，所述扫描信号用于打开所述次像素的栅极以让所述数据信号对所述次像素进行预充电。
在上述的液晶显示装置中，在所述数据信号预充电到所述次像素和所述数据信号写入到所述次像素之间的时间里，所述扫描信号用于关闭所述次像素的栅极。
在上述的液晶显示装置中，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列次像素的栅极并且所述数据信号对所述下一列次像素进行预充电。
在本发明的液晶显示装置中，所述像素的三个所述次像素具有相同的极性，所述像素的三个所述次像素按与所述扫描信号的扫描方向平行的方向排列。
在本发明的液晶显示装置中，相邻两列的所述次像素具有相反的极性。
本发明构造了一种液晶显示装置的信号驱动方法，所述液晶显示装置包括扫描驱动模块、数据驱动模块、薄膜晶体管阵列面板、扫描线和数据线，所述薄膜晶体管阵列面板上设有像素，所述像素包括次像素R、次像素G和次像素B，具有相同极性的所述次像素排列在同一列，所述公共线与相同极性的所述次像素耦接，所述方法包括以下步骤：（A）、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；（B）、数据驱动模块产生数据信号并将所述数据信号发送给所述数据线；（C）、扫描线将所述扫描信号与所述像素中的次像素耦接，所述扫描信号对处于同一行的次像素按列纵向依次扫描；（D）、数据线将所述数据线发送给所述像素中的至少一个次像素，所述数据线在将所述数据信号输入到所述次像素中之前对所述次像素进行预充电；（E）、公共线根据与其耦接的所述次像素的极性向所述次像素施加高电压或低电压；（F）、所述数据信号根据所述次像素的极性对所述次像素进行预充电。
在本发明的液晶显示装置的信号驱动方法中，所述方法还包括以下步骤：（G）、在数据信号写入到所述次像素之前，所述扫描信号打开所述次像素的栅极以让所述数据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，所述方法还包括以下步骤：（H）、在所述数据信号预充电到所述次像素和所述数据信号写入到所述次像素之间的时间里，所述扫描信号关闭所述次像素的栅极。
在上述的液晶显示装置的信号驱动方法中，所述方法还包括以下步骤：（I）、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列次像素的栅极并且所述数据信号对所述下一列次像素进行预充电。
 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，如果在使用传统的将前后信号查表比较以进行过驱动时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第一较佳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第一较佳实施例的示意图。
 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）及阵列公共线（Array com）高低电平信号的配合，在每个正确的数据信号写入到像素前都对像素先行充电一高电压，相当于在正确的数据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、薄膜晶体管阵列面板202、公共线205、扫描线（栅极线）203和数据线207，图2中，扫描线203与数据线207垂直设置。薄膜晶体管阵列面板202上设有像素206，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，该扫描信号被该扫描驱动模块204发送给所述扫描线203，数据驱动模块201用于产生数据信号，该数据信号被该数据驱动模块201发送给所述数据线207。扫描线203与像素206耦接，具体地，扫描线203与像素206耦接，数据线207与像素206耦接，具体地，数据线207与像素206中的至少一个次像素耦接，公共线205与像素206耦接，具体地，公共线205与像素206中的至少一个次像素耦接。
参考图3和图4，图3为本发明的液晶显示装置的第一较佳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第一较佳实施例的示意图。在本实施例中，像素由三个次像素（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，扫描线的扫描信号对薄膜晶体管阵列面板中的每一次像素按列纵向依次进行扫描。次像素R、次像素G和次像素B按与扫描信号的扫描方向平行的方向排列。数据线（包括数据线1、数据线2、数据线3、数据线4、数据线5、数据线6）按与公共线垂直的方向设置。在本实施例中，薄膜晶体管面板的同一列的次像素均具有相同的极性，即每一个像素的三个次像素均具有相同的极性。相邻两列的次像素的极性相反。数据线（包括数据线1和数据线2、数据线3、数据线4、数据线5、数据线6）与同一行的次像素耦接，具体地，数据线1与第一像素310中具有正极性的次像素B311和第三像素330中具有负极性的次像素B331耦接，数据线2与第一像素310中具有正极性的次像素G312和第三像素330中具有负极性的次像素G332耦接。公共线（包括公共线1和公共线2）设置在与扫描信号扫描方向平行的方向上，并且以阵列的形式排列。第一像素310的次像素B311、次像素G312、次像素R313和第二像素320的次像素B321、次像素G322、次像素R323组成第一列次像素，第三像素330的次像素B331、次像素G332、次像素R333和第四像素340的次像素B341、次像素G342、次像素R343组成第二列次像素，依此类推。公共线与同一列的次像素耦接，即公共线与具有相同极性的次像素耦接，具体地，公共线1（com 1）与第一像素310中均具有正极性的次像素R311、次像素G312、次像素B313和第二像素320中均具有正极性的次像素R321、次像素G322、次像素B323耦接，公共线2（com 2）与第三像素330的次像素R331、次像素G332、次像素B333和第四像素340的次像素R341、次像素G342、次像素B343耦接。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像素充电，因为在像素内的电压变成3V之前已经利用了同一帧内的数据信号来对像素进行充电。具体地，栅极线在为正确数据信号写入到第一列次像素而发送一个栅极信号（扫描信号）之前向第一列次像素的栅极预先发送一个栅极信号以打开第一列次像素的栅极，让数据线预充电到第一列次像素中，然后第一列次像素在由扫描线发送的栅极信号的控制下关闭栅极，接着栅极线向第一列次像素发送一个栅极信号以打开第一列次像素的栅极，此时，正确的数据信号将会写入到第一列次像素中。由于同一列的次像素的极性相同，而且公共线与极性相同的次像素耦接，因此在第一列次像素中与公共线1耦接且具有相同极性的次像素有第一像素310的次像素B311、次像素G312、次像素R313和第二像素320的次像素B321、次像素G322、次像素R323，第一列次像素的极性均为正，在公共线1低电平0V的配合下向第一列次像素充上一高电压。在第一列次像素的栅极关闭的同时，第二组栅极信号将会向第二列次像素发送一栅极信号以打开第二列次像素的栅极以对第二列次像素进行预充电。需要说明的是，在本实施例中，数据信号根据每一列次像素的极性来对每一列次像素进行预充电。同样，在第二列次像素内的电压由1V变成3V前，利用数据线上的数据信号来给第二列次像素进行预充电，具体地，栅极线向第二列次像素的栅极发送高电平信号以打开第二列次像素的栅极，让数据线上的数据信号预充电到第二列次像素中，具体地，栅极线在为正确数据信号写入到第二列次像素而发送一个栅极信号之前向第二列次像素的栅极预先发送一个栅极信号以打开第二列次像素的栅极，让数据线上的数据信号预充电到第二列次像素中，然后第二列次像素关闭栅极，接着栅极线向第二列次像素发送一个栅极信号以打开第二列次像素的栅极，此时，正确的数据信号将会写入到第二列次像素中。第二列次像素的极性与数据信号的极性相同。由于在第二列次像素中与公共线2耦接且具有相同极性的次像素有第三像素330的次像素B331、次像素G332、次像素R333和第四像素340的次像素B341、次像素G342、次像素R343。第二列次像素的极性为负，在公共线2高电平10V的配合下向第二列次像素充上一高电压。在第二列次像素的栅极关闭的同时，第三组栅极信号将会向第三列次像素发送一栅极信号以打开第三列次像素的栅极。依此类推，便可在一帧内实现过驱动功能。在本实施例中，公共线1和2是根据次像素的极性来发送高电平或低电平的。
统观上述实施例，本发明的液晶显示装置的信号驱动方法包括以下步骤：扫描驱动模块204产生扫描信号并将该扫描信号发送给扫描线203；数据驱动模块201产生数据信号并将该数据信号发送给数据线207；扫描线203将该扫描信号发送给像素206中的耦接次像素，扫描信号对处于同一行的次像素按列纵向依次扫描；数据线207将该数据信号发送给像素206中的至少一个次像素，数据线207在将该数据信号输入到次像素中之前对该次像素进行预充电；公共线205根据与其耦接的次像素的极性向次像素施加高电压或低电压；数据信号根据次像素的极性对该次像素进行预充电；在正确的数据信号写入到该次像素之前，扫描信号打开该次像素的栅极以让该数据信号对该次像素进行预充电；在该数据信号预充电到该次像素和该正确的数据信号写入到该次像素之间的时间里，该扫描信号关闭该次像素的栅极；在该扫描信号关闭该次像素时，该扫描信号打开下一列次像素的栅极并且该数据信号对个下一列次像素进行预充电。
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 (13)

  1. 一种液晶显示装置，其特征在于，包括：
    扫描驱动模块，用于产生扫描信号并将所述扫描信号发送给所述扫描线；
    数据驱动模块，用于产生数据信号并将所述数据信号发送给所述数据线；
    薄膜晶体管阵列面板，其上设有像素，所述像素包括次像素R、次像素G和次像素B；
    扫描线，所述扫描线与所述像素中的次像素耦接，所述扫描信号对处于同一行的次像素按列纵向依次扫描；
    数据线，所述数据线与所述像素中的至少一个次像素耦接，所述数据线用于在将所述数据信号输入到所述次像素中之前对所述次像素进行预充电；
    公共线，所述公共线与所述像素中的次像素耦接，用于根据与其耦接的所述次像素的极性向所述次像素施加高电压或低电压；
    具有相同极性的所述次像素排列在同一列，所述公共线与相同极性的所述次像素耦接；
    所述数据信号用于根据所述次像素的极性对所述次像素进行预充电；
    所述扫描信号用于在数据信号写入到所述次像素之前打开所述次像素的栅极以让所述数据信号对所述次像素进行预充电；
    所述像素的三个所述次像素具有相同的极性，所述像素的三个所述次像素按与所述扫描信号的扫描方向平行的方向排列；
    相邻两列的所述次像素具有相反的极性。
  2. 根据权利要求1所述的液晶显示装置，其特征在于，在所述数据信号预充电到所述次像素和所述数据信号写入到所述次像素之间的时间里，所述扫描信号用于关闭所述次像素的栅极。
  3. 根据权利要求1所述的液晶显示装置，其特征在于，所述扫描信号在所述扫描信号关闭所述次像素时打开下一列次像素的栅极并且所述数据信号对所述下一列次像素进行预充电。
  4. 一种液晶显示装置，其特征在于，包括：
    扫描驱动模块，用于产生扫描信号并将所述扫描信号发送给所述扫描线；
    数据驱动模块，用于产生数据信号并将所述数据信号发送给所述数据线；
    薄膜晶体管阵列面板，其上设有像素，所述像素包括次像素R、次像素G和次像素B；
    扫描线，所述扫描线与所述像素中的次像素耦接，所述扫描信号对处于同一行的次像素按列纵向依次扫描；
    数据线，所述数据线与所述像素中的至少一个次像素耦接，所述数据线用于在将所述数据信号输入到所述次像素中之前对所述次像素进行预充电；
    公共线，所述公共线与所述像素中的次像素耦接，用于根据与其耦接的所述次像素的极性向所述次像素施加高电压或低电压；
    具有相同极性的所述次像素排列在同一列，所述公共线与相同极性的所述次像素耦接；
    所述数据信号用于根据所述次像素的极性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，在数据信号写入到所述次像素之前，所述扫描信号用于打开所述次像素的栅极以让所述数据信号对所述次像素进行预充电。
  6. 根据权利要求5所述的液晶显示装置，其特征在于，在所述数据信号预充电到所述次像素和所述数据信号写入到所述次像素之间的时间里，所述扫描信号用于关闭所述次像素的栅极。
  7. 根据权利要求6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时，所述扫描信号打开下一列次像素的栅极并且所述数据信号对所述下一列次像素进行预充电。
  8. 根据权利要求4所述的液晶显示装置，其特征在于，所述像素的三个所述次像素具有相同的极性，所述像素的三个所述次像素按与所述扫描信号的扫描方向平行的方向排列。
  9. 根据权利要求4所述的液晶显示装置，其特征在于，相邻两列的所述次像素具有相反的极性。
  10. 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、薄膜晶体管阵列面板、扫描线和数据线，所述薄膜晶体管阵列面板上设有像素，所述像素包括次像素R、次像素G和次像素B，具有相同极性的所述次像素排列在同一列，所述公共线与相同极性的所述次像素耦接，所述方法包括以下步骤：
    （A）、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；
    （B）、数据驱动模块产生数据信号并将所述数据信号发送给所述数据线；
    （C）、扫描线将所述扫描信号与所述像素中的次像素耦接，所述扫描信号对处于同一行的次像素按列纵向依次扫描；
    （D）、数据线将所述数据线发送给所述像素中的至少一个次像素，所述数据线在将所述数据信号输入到所述次像素中之前对所述次像素进行预充电；
    （E）、公共线根据与其耦接的所述次像素的极性向所述次像素施加高电压或低电压；
    （F）、所述数据信号根据所述次像素的极性对所述次像素进行预充电。
  11. 根据权利要求10所述的液晶显示装置的信号驱动方法，其特征在于，所述方法还包括以下步骤：
    （G）、在数据信号写入到所述次像素之前，所述扫描信号打开所述次像素的栅极以让所述数据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，所述方法还包括以下步骤：
    （H）、在所述数据信号预充电到所述次像素和所述数据信号写入到所述次像素之间的时间里，所述扫描信号关闭所述次像素的栅极。
  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，所述方法还包括以下步骤：
    （I）、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列次像素的栅极并且所述数据信号对所述下一列次像素进行预充电。
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