WO2019061763A1 - 显示装置的驱动方法及显示装置 - Google Patents

显示装置的驱动方法及显示装置 Download PDF

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WO2019061763A1
WO2019061763A1 PCT/CN2017/112446 CN2017112446W WO2019061763A1 WO 2019061763 A1 WO2019061763 A1 WO 2019061763A1 CN 2017112446 W CN2017112446 W CN 2017112446W WO 2019061763 A1 WO2019061763 A1 WO 2019061763A1
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Prior art keywords
scan line
pixel unit
data voltage
unit corresponding
similarity
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French (fr)
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何健
周明忠
许神贤
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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  • the present invention relates to the field of display technologies, and in particular, to a driving method and a display device for a display device.
  • the scanning drive circuit of the existing display device causes the threshold voltage to drift due to the long-term operation of the driving transistor T2 in the saturation region, resulting in uneven brightness of the panel display screen, affecting the display effect, and improving brightness unevenness.
  • PWM digital drive
  • sub-field cut mode is currently used PWM drive mode, this way can suppress the brightness unevenness of the display device, however, the existing PWM drive mode due to
  • the time required for the PWM drive scan control chip to open a row of pixel units is only 1/N of the original analog voltage drive, where N is the number of bits. As the resolution of the panel increases, the turn-on time of one row of pixel units is further compressed, so the actual display exists. The problem of insufficient charging of the pixel unit affects the display effect.
  • the technical problem to be solved by the present invention is to provide a driving method and a display device for a display device to solve the problem of insufficient charging of the pixel unit and improve the display effect.
  • a technical solution adopted by the present invention is to provide a display device, including:
  • a data driver for outputting a data voltage
  • a scan driver for outputting a scan signal
  • a comparison controller configured to acquire a data voltage of each pixel unit corresponding to the current scan line and acquire a data voltage of each pixel unit corresponding to a next scan line adjacent to the current scan line, and The data voltage of each pixel unit corresponding to the scan line is compared with the data voltage of each pixel unit corresponding to the current scan line to obtain a comparison result, and the similarity is obtained according to the comparison result, and the similarity is compared with a preset threshold.
  • the scan signal received by the next scan line partially overlaps with the scan signal received by the current scan line, and each of the current scan lines corresponds to a data voltage of one pixel unit for each of the next scan lines
  • the pixel unit is precharged
  • the comparison controller obtains a first comparison result when the data voltage of each pixel unit corresponding to the next scan row is the same as the data voltage of each pixel unit corresponding to the current scan row; the comparison controller Obtaining a second comparison result when a data voltage of each pixel unit corresponding to the next scan line is different from a data voltage of each pixel unit corresponding to the current scan line;
  • the comparison controller calculates an arithmetic mean of the comparison results to obtain the similarity.
  • a technical solution adopted by the present invention is to provide a driving method for a display device, including:
  • the scan signal received by the next scan line partially overlaps the scan signal received by the current scan line, and each pixel unit corresponding to the current scan line The data voltage precharges each pixel unit corresponding to the next scan line.
  • a technical solution adopted by the present invention is to provide a display device, including:
  • a data driver for outputting a data voltage
  • a scan driver for outputting a scan signal
  • a comparison controller configured to acquire a data voltage of each pixel unit corresponding to the current scan line and acquire a data voltage of each pixel unit corresponding to a next scan line adjacent to the current scan line, and The data voltage of each pixel unit corresponding to the scan line is compared with the data voltage of each pixel unit corresponding to the current scan line to obtain a comparison result, and the similarity is obtained according to the comparison result, and the similarity is compared with a preset threshold. Comparing, when the similarity is greater than or equal to the preset threshold, the scan signal received by the next scan line partially overlaps with the scan signal received by the current scan line, and each of the current scan lines corresponds to The data voltage of one pixel unit precharges each pixel unit corresponding to the next scan line.
  • the invention has the beneficial effects that the display panel and the driving method of the display panel of the present invention respectively correspond to the data voltage of each pixel unit corresponding to the next scanning row and the current scanning line.
  • the data voltage of each pixel unit is compared to obtain a comparison result, and according to The comparison result obtains a similarity.
  • the similarity is greater than or equal to a preset threshold
  • the scan signal received by the next scan line partially overlaps the scan signal received by the current scan line
  • the current scan line corresponds to The data voltage of each pixel unit pre-charges each pixel unit corresponding to the next scan line, thereby solving the problem of insufficient charging of the pixel unit and improving the display effect.
  • 1 is a circuit diagram of a conventional scan driving circuit
  • FIG. 2 is a schematic diagram of a conventional PWM driving method
  • FIG. 3 is a schematic diagram of a waveform of a conventional pixel unit that is undercharged
  • FIG. 4 is a schematic structural view of a display device of the present invention.
  • Figure 5 is a schematic diagram showing the waveform of precharging of the display device of the present invention.
  • Fig. 6 is a flow chart showing a driving method of the display device of the present invention.
  • FIG. 1 is a circuit diagram of a conventional scan driving circuit.
  • Data is the data driving signal
  • Gate1 is the charging scanning signal
  • control transistor T1 charges A point
  • Gate2 is the discharging scanning signal
  • control transistor T3 discharges to point A
  • Vref is the reference voltage, about zero
  • point A Output two Gamma voltages, namely GM1 (brightest) and GM9 (darkest) voltage levels, according to the transistor current voltage IV equation:
  • Ids sat is the conduction current of transistor T2
  • k is the intrinsic conduction factor
  • Vgs is the gate-to-source voltage of transistor T2
  • Vth is the threshold voltage of transistor T2
  • VA is the voltage of point A
  • VB is the voltage of point B, due to the device
  • the degradation or non-uniformity causes the variation amount ⁇ Vth of the threshold voltage Vth of the transistor to be small with respect to (VA-VB), so that the PWM driving method can suppress the luminance unevenness problem with respect to the analog voltage driving method.
  • FIG. 2 is a schematic diagram of a conventional PWM driving method.
  • the x-axis is time and the y-axis is the scan time of the scan line.
  • One frame of picture is equally cut into eight subfields of the same time, for example, SF1-SF8.
  • the pixel unit has different illumination time in different subfields, and the pixel units of 8 subfields are occupied by light.
  • the ratios are 1:1, 2:1, 4:1, 8:1, 16:1, 32:1, 64:1, 128:1, respectively, to generate a PWM luminance signal, which is combined with the human eye's perception of brightness. Integral principle, PWM brightness signal can display different gray level brightness (255 gray levels).
  • FIG. 4 is a schematic structural view of a display device of the present invention.
  • the display device includes a data driver 10 for outputting a data voltage, a scan driver 20 for outputting a scan signal, and a comparison controller 30 for acquiring data of each pixel unit corresponding to the current scan line (the Nth scan line).
  • the scan signal received by the next scan line does not overlap with the scan signal received by the current scan line, and each pixel unit corresponding to the current scan line The data voltage does not precharge each pixel unit corresponding to the next scan line.
  • the comparison controller obtains a first comparison result when the data voltage of each pixel unit corresponding to the next scan row is the same as the data voltage of each pixel unit corresponding to the current scan row; the comparison controller The second comparison result is obtained when the data voltage of each pixel unit corresponding to the next scan line is different from the data voltage of each pixel unit corresponding to the current scan line.
  • the first comparison result is 1, and the second comparison result is -1.
  • the comparison controller calculates an arithmetic mean of the comparison results to obtain the similarity.
  • FIG. 5 is a waveform diagram of precharging of the display device of the present invention.
  • the precharging principle of the display device of the present invention is described below with reference to FIG. 4 and FIG. 5, wherein the current scanning behavior is the Nth scanning line, and the next scanning behavior of the adjacent scanning line is the N+1th scanning line, and N takes the natural number:
  • each pixel unit corresponding to the N+1th scan line of the scan signal Gate1_N+1 is turned on, so that The scan signal Gate1_N received by the N scan line and the scan signal Gate1_N+1 received by the (N+1)th scan line have a partial overlap area ⁇ T.
  • the data voltage of the Nth scan line corresponds to the (N+1)th scan line.
  • Each pixel unit is pre-charged, so that the actual charging time of each pixel unit corresponding to the N+1th scanning line is increased, that is, T'gate>Tgate, so that each pixel corresponding to the (N+1)th scanning line can be solved.
  • the data voltage of the next scan line is D N+1, j , and the N+1th scan line is compared with the Nth scan line (such as the jth column). Whether the data voltages are the same, if they are the same, ⁇ N+1,j takes 1; if not, ⁇ N+1,j takes -1.
  • N is the Nth row and M is the total number of columns.
  • P N+1 is greater than or equal to the preset threshold ⁇ , it indicates that the data voltage of the N+1th scan line and the Nth scan line is high, and the N+1th scan line precharge enable control signal E N+1 is equal to 1
  • the scan signal received by the (N+1)th scan line partially overlaps with the scan signal received by the Nth scan line, and the data voltage of the (N+1)th scan line is precharged for each pixel unit corresponding to the (N+1)th scan line.
  • P N+1 is less than the preset threshold ⁇ , it indicates that the data voltage similarity between the N+1th scan line and the Nth scan line is low, and the (N+1)th scan line precharge enable control signal E N+1 is equal to 0.
  • the scan signal received by the (N+1)th scan line does not overlap with the scan signal received by the Nth scan line, and the data voltage of the (N+1)th scan line is not pre-processed for each pixel unit corresponding to the (N+1)th scan line. Charging.
  • the preset threshold ⁇ is selected according to actual needs, and can generally be set to 0, and the enable control signal E N+1 satisfies the following formula:
  • FIG. 6 is a schematic flow chart of a driving method of the display device of the present invention. The method includes the steps of:
  • Step S1 Acquire a data voltage of each pixel unit corresponding to the current scan line (the Nth scan line).
  • Step S2 Acquire a next scan line (the N+1th scan line) adjacent to the current scan line.
  • the data voltage of each pixel unit The data voltage of each pixel unit.
  • Step S3 Comparing the data voltage of each pixel unit corresponding to the next scan line with the data voltage of each pixel unit corresponding to the current scan line to obtain a comparison result.
  • Step S4 Obtain a similarity according to the comparison result, and compare the similarity with a preset threshold.
  • Step S5 when the similarity is greater than or equal to the preset threshold, the scan signal received by the next scan line partially overlaps with the scan signal received by the current scan line, and the current scan line corresponds to each The data voltage of one pixel unit precharges each pixel unit corresponding to the next scan line.
  • Step S6 when the similarity is less than the preset threshold, the scan signal received by the next scan line does not overlap with the scan signal received by the current scan line, and each of the current scan lines corresponds to The data voltage of the pixel unit does not precharge each pixel unit corresponding to the next scan line.
  • step S3 includes:
  • the second comparison result is obtained when the data voltage of the cell is different from the data voltage of each pixel cell corresponding to the current scan line.
  • the first comparison result is 1, and the second comparison result is -1.
  • step S4 includes:
  • N is the Nth row and M is the total number of columns.
  • P N+1 is greater than or equal to the preset threshold ⁇ , it indicates that the data voltage of the N+1th scan line and the Nth scan line is high, and the N+1th scan line precharge enable control signal E N+1 is equal to 1
  • the scan signal received by the (N+1)th scan line partially overlaps with the scan signal received by the Nth scan line, and the data voltage of the (N+1)th scan line is precharged for each pixel unit corresponding to the (N+1)th scan line.
  • P N+1 is less than the preset threshold ⁇ , it indicates that the data voltage similarity between the N+1th scan line and the Nth scan line is low, and the (N+1)th scan line precharge enable control signal E N+1 is equal to 0.
  • the scan signal received by the (N+1)th scan line does not overlap with the scan signal received by the Nth scan line, and the data voltage of the (N+1)th scan line is not pre-processed for each pixel unit corresponding to the (N+1)th scan line. Charging.
  • the preset threshold ⁇ is selected according to actual needs, and can generally be set to 0, and the enable control signal E N+1 satisfies the following formula:
  • the driving method of the display panel and the display panel compares the data voltage of each pixel unit corresponding to the next scan line with the data voltage of each pixel unit corresponding to the current scan line to obtain a comparison result, and compares As a result, a similarity is obtained.
  • the similarity is greater than or equal to a preset threshold
  • the scan signal received by the next scan line partially overlaps the scan signal received by the current scan line
  • the current scan line corresponds to each
  • the data voltage of one pixel unit pre-charges each pixel unit corresponding to the next scan line, thereby solving the problem of insufficient charging of the pixel unit and improving the display effect.

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Abstract

一种显示装置的驱动方法及显示装置。该驱动方法包括获取当前扫描行及下一扫描行每一像素单元的数据电压（S1，S2）；将下一扫描行与当前扫描行每一像素单元的数据电压进行比较以获得比较结果（S3）；根据比较结果获得相似度，并将其与预设阈值进行比较（S4）；在相似度大于等于预设阈值时，下一扫描行与当前扫描行接收到的扫描信号部分重叠，当前扫描行的数据电压对下一扫描行的每一像素单元进行预充电（S5），以此解决像素单元充电不足问题，提升显示效果。

Description

显示装置的驱动方法及显示装置 【技术领域】
本发明涉及显示技术领域，特别是涉及一种显示装置的驱动方法及显示装置。
【背景技术】
现有显示装置的扫描驱动电路(如图1所示)由于驱动晶体管T2长时间工作在饱和区会造成阈值电压漂移，导致面板显示画面产生亮度不均匀，影响显示效果，为改善亮度不均匀以提升显示面板的显示效果，PWM(数位驱动)方式被提出，子场等切方式是目前常用的PWM驱动方式，这种方式可抑制显示装置的亮度不均匀问题，然而现有的PWM驱动方式由于PWM驱动扫描控制芯片打开一行像素单元的时间仅为原来类比电压驱动的1/N，其中N为bits数，随着面板分辨率增加，一行像素单元的打开时间会进一步压缩，因此实际显示中存在像素单元充电不足问题，影响显示效果。
【发明内容】
本发明主要解决的技术问题是提供一种显示装置的驱动方法及显示装置，以解决像素单元充电不足问题，提升显示效果。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种显示装置，包括：
数据驱动器，用于输出数据电压；
扫描驱动器，用于输出扫描信号；
比较控制器，用于获取当前扫描行对应的每一像素单元的数据电压及获取与所述当前扫描行相邻的下一扫描行对应的每一像素单元的数据电压，并将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果，并根据比较结果获得相似度，并将所述相似度与预设阈值进行比较，在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一 像素单元进行预充电；
其中，所述比较控制器在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压相同时，获得第一比较结果；所述比较控制器在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压不同时，获得第二比较结果；
所述比较控制器计算所述比较结果的算术平均值以获得所述相似度。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种显示装置的驱动方法，包括：
获取当前扫描行对应的每一像素单元的数据电压；
获取与所述当前扫描行相邻的下一扫描行对应的每一像素单元的数据电压；
将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果；
根据比较结果获得相似度，并将所述相似度与预设阈值进行比较；及
在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种显示装置，包括：
数据驱动器，用于输出数据电压；
扫描驱动器，用于输出扫描信号；
比较控制器，用于获取当前扫描行对应的每一像素单元的数据电压及获取与所述当前扫描行相邻的下一扫描行对应的每一像素单元的数据电压，并将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果，并根据比较结果获得相似度，并将所述相似度与预设阈值进行比较，在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电。
本发明的有益效果是：区别于现有技术的情况，本发明的所述显示面板及显示面板的驱动方法通过将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较以获得比较结果，并根据 比较结果获得相似度，在所述相似度大于等于预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电，以此解决像素单元充电不足问题，提升显示效果。
【附图说明】
图1是现有的扫描驱动电路的电路示意图；
图2是现有的PWM驱动方式示意图；
图3是现有的像素单元充电不足的波形示意图；
图4是本发明的显示装置的结构示意图；
图5是本发明的显示装置预充电的波形示意图；
图6是本发明显示装置的驱动方法的流程示意图。
【具体实施方式】
请参阅图1，是现有的扫描驱动电路的电路示意图。其中，Data为数据驱动信号，Gate1为充电扫描信号，控制晶体管T1对A点进行充电，Gate2为放电扫描信号，控制晶体管T3对A点进行放电，Vref为参考电压，约为零，A点处输出两个Gamma电压，即GM1(最亮)和GM9(最暗)两个电压准位，按照晶体管电流电压I-V方程：
Ids，sat＝k*(Vgs-Vth，T2)2＝k*(VA-VB-Vth，T2)2
其中，Ids，sat为晶体管T2导通电流，k为本征导电因子，Vgs为晶体管T2栅源极电压，Vth为晶体管T2的阈值电压，VA为A点电压，VB为B点电压，由于器件退化或者非一致性导致晶体管的阈值电压Vth的变化量ΔVth相对于(VA-VB)变化较小，因此相对模拟电压驱动方式，PWM驱动方式可抑制亮度不均匀问题。
请参阅图2，是现有的PWM驱动方式示意图。其中，x轴为时间，y轴为扫描线的扫描时间。一帧画面被等切成8个时间相同的子场，例如为SF1-SF8，通过控制充电与放电的时间实现像素单元在不同子场的发光时间不同，8个子场的像素单元发光时间占空比分别为1∶1、2∶1、4∶1、8∶1、16∶1、32∶1、64∶1、128∶1，以产生PWM亮度信号，结合人眼对亮度的感知是时间积分原理，PWM亮度信号可显示不同的灰阶亮度(255个灰阶)。如图3所示，当充电扫描信号Gate1 为高电平，即对应接收所述充电扫描信号Gate1的扫描行被打开时，A点电压上升过程是给电容Cst充电过程，如果扫描行被打开时间Tgate太短，则所述电容Cst充电不足，A点电压会低于数据电压，即实际像素单元的发光电压低于Gamma电压GM1(亮)，影响显示效果。
请参阅图4，是本发明的显示装置的结构示意图。所述显示装置包括数据驱动器10，用于输出数据电压；扫描驱动器20，用于输出扫描信号；比较控制器30，用于获取当前扫描行(第N扫描行)对应的每一像素单元的数据电压及获取与所述当前扫描行相邻的下一扫描行(第N+1扫描行)对应的每一像素单元的数据电压，并将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果，并根据比较结果获得相似度，并将所述相似度与预设阈值进行比较，在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电。
在所述相似度小于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号不重叠，所述当前扫描行对应的每一像素单元的数据电压不会预充电所述下一扫描行对应的每一像素单元。
其中，所述比较控制器在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压相同时，获得第一比较结果；所述比较控制器在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压不同时，获得第二比较结果。
具体地，所述第一比较结果为1，所述第二比较结果为-1。
在本实施例中，所述比较控制器计算所述比较结果的算术平均值以获得所述相似度。
请参阅图5，是本发明的显示装置预充电的波形示意图。结合图4及图5对本发明显示装置的预充电原理描述如下，其中当前扫描行为第N扫描行，相邻所述当前扫描行的下一扫描行为第N+1扫描行，N取自然数：
通过增大第N+1扫描行输出扫描信号Gate1_N+1的高电平的时间，即接收所述扫描信号Gate1_N+1的第N+1扫描行对应的每一像素单元被打开时间，使得第N扫描行接收到的扫描信号Gate1_N与第N+1扫描行接收到的扫描信号Gate1_N+1有部分重叠区域ΔT，在重叠区域，第N扫描行的数据电压会对第 N+1扫描行对应的每一像素单元进行预充电，这样第N+1扫描行对应的每一像素单元的实际充电时间有增加，即T’gate＞Tgate，如此可解决第N+1扫描行对应的每一像素单元的充电不足问题。具体地，打开当前扫描行，即打开第N扫描行，以获得当前扫描行的数据电压为DN，j，其中j＝1，2，3...，M，N表示第N行，M表示显示面板的总列数(即数据电压的总数)，下一扫描行的数据电压为DN+1， j，比较第N+1扫描行与第N扫描行同一列(如第j列)的数据电压是否相同，如果相同则αN+1，j取1；如果不相同则αN+1，j取-1。
Figure PCTCN2017112446-appb-000001
对第N+1扫描行的αN+1求算术平均值即可获得相似度PN+1，其满足如下公式：
Figure PCTCN2017112446-appb-000002
其中，N表示第N行，M为总列数。
当PN+1大于等于预设阈值η时，表示第N+1扫描行与第N扫描行的数据电压相似度高，第N+1扫描行预充电使能控制信号EN+1等于1，则第N+1扫描行接收的扫描信号与第N扫描行接收的扫描信号有部分重叠，第N+1扫描行的数据电压对第N+1扫描行对应的每一像素单元进行预充电。当PN+1小于预设阈值η时，表示第N+1扫描行与第N扫描行的数据电压相似度低，第N+1扫描行预充电使能控制信号EN+1等于0，则第N+1扫描行接收的扫描信号与第N扫描行接收到的扫描信号不重叠，第N+1扫描行的数据电压不会对第N+1扫描行对应的每一像素单元进行预充电。其中预设阈值η根据实际需求选取，一般可设定为0，使能控制信号EN+1满足如下公式：
Figure PCTCN2017112446-appb-000003
请参阅图6，是本发明显示装置的驱动方法的流程示意图。所述方法包括步骤：
步骤S1：获取当前扫描行(第N扫描行)对应的每一像素单元的数据电压。
步骤S2：获取与所述当前扫描行相邻的下一扫描行(第N+1扫描行)对应 的每一像素单元的数据电压。
步骤S3：将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果。
步骤S4：根据比较结果获得相似度，并将所述相似度与预设阈值进行比较。
步骤S5：在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电。
步骤S6：在所述相似度小于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号不重叠，所述当前扫描行对应的每一像素单元的数据电压不会预充电所述下一扫描行对应的每一像素单元。
具体地，步骤S3包括：
在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压相同时，获得第一比较结果；在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压不同时，获得第二比较结果。具体地，所述第一比较结果为1，所述第二比较结果为-1。
其中，打开当前扫描行，即打开第N扫描行，以获得当前扫描行的数据电压为DN，j，其中j＝1，2，3...，M，N表示第N行，M表示显示面板的总列数(即数据电压的总数)，下一扫描行的数据电压为DN+1，j，比较第N+1扫描行与第N扫描行同一列(如第j列)的数据电压是否相同，如果相同则αN+1，j取1；如果不相同则αN+1，j取-1。
Figure PCTCN2017112446-appb-000004
具体地，步骤S4包括：
计算所述比较结果的算术平均值以获得所述相似度。
即对第N+1扫描行的αN+1求算术平均值即可获得相似度PN+1，其满足如下公式：
Figure PCTCN2017112446-appb-000005
其中，N表示第N行，M为总列数。
当PN+1大于等于预设阈值η时，表示第N+1扫描行与第N扫描行的数据电压相似度高，第N+1扫描行预充电使能控制信号EN+1等于1，则第N+1扫描行接收的扫描信号与第N扫描行接收的扫描信号有部分重叠，第N+1扫描行的数据电压对第N+1扫描行对应的每一像素单元进行预充电。当PN+1小于预设阈值η时，表示第N+1扫描行与第N扫描行的数据电压相似度低，第N+1扫描行预充电使能控制信号EN+1等于0，则第N+1扫描行接收的扫描信号与第N扫描行接收到的扫描信号不重叠，第N+1扫描行的数据电压不会对第N+1扫描行对应的每一像素单元进行预充电。其中预设阈值η根据实际需求选取，一般可设定为0，使能控制信号EN+1满足如下公式：
Figure PCTCN2017112446-appb-000006
所述显示面板及显示面板的驱动方法通过将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较以获得比较结果，并根据比较结果获得相似度，在所述相似度大于等于预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电，以此解决像素单元充电不足问题，提升显示效果。
以上仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (11)

  1. 一种显示装置，其中，所述显示装置包括：
    数据驱动器，用于输出数据电压；
    扫描驱动器，用于输出扫描信号；
    比较控制器，用于获取当前扫描行对应的每一像素单元的数据电压及获取与所述当前扫描行相邻的下一扫描行对应的每一像素单元的数据电压，并将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果，并根据比较结果获得相似度，并将所述相似度与预设阈值进行比较，在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电；
    其中，所述比较控制器在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压相同时，获得第一比较结果；所述比较控制器在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压不同时，获得第二比较结果；
    所述比较控制器计算所述比较结果的算术平均值以获得所述相似度。
  2. 一种显示装置的驱动方法，其中，所述驱动方法包括：
    获取当前扫描行对应的每一像素单元的数据电压；
    获取与所述当前扫描行相邻的下一扫描行对应的每一像素单元的数据电压；
    将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果；
    根据比较结果获得相似度，并将所述相似度与预设阈值进行比较；及
    在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电。
  3. 根据权利要求2所述的显示装置的驱动方法，其中，所述根据比较结果获得相似度，并将所述相似度与预设阈值进行比较的步骤之后还包括：
    在所述相似度小于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号不重叠，所述当前扫描行对应的每一像素单 元的数据电压不会预充电所述下一扫描行对应的每一像素单元。
  4. 根据权利要求2所述的显示装置的驱动方法，其中，所述将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果，包括：
    在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压相同时，获得第一比较结果；在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压不同时，获得第二比较结果。
  5. 根据权利要求4所述的显示装置的驱动方法，其中，所述第一比较结果为1，所述第二比较结果为-1。
  6. 根据权利要求2所述的显示装置的驱动方法，其中，所述根据比较结果获得相似度，并将所述相似度与预设阈值进行比较，包括：
    计算所述比较结果的算术平均值以获得所述相似度。
  7. 一种显示装置，其中，所述显示装置包括：
    数据驱动器，用于输出数据电压；
    扫描驱动器，用于输出扫描信号；
    比较控制器，用于获取当前扫描行对应的每一像素单元的数据电压及获取与所述当前扫描行相邻的下一扫描行对应的每一像素单元的数据电压，并将所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压进行比较，以获得比较结果，并根据比较结果获得相似度，并将所述相似度与预设阈值进行比较，在所述相似度大于等于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号部分重叠，所述当前扫描行对应的每一像素单元的数据电压对所述下一扫描行对应的每一像素单元进行预充电。
  8. 根据权利要求7所述的显示装置，其中，在所述相似度小于所述预设阈值时，所述下一扫描行接收到的扫描信号与所述当前扫描行接收到的扫描信号不重叠，所述当前扫描行对应的每一像素单元的数据电压不会预充电所述下一扫描行对应的每一像素单元。
  9. 根据权利要求7所述的显示装置，其中，所述比较控制器在所述下一扫描行对应的每一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压相同时，获得第一比较结果；所述比较控制器在所述下一扫描行对应的每 一像素单元的数据电压与当前扫描行对应的每一像素单元的数据电压不同时，获得第二比较结果。
  10. 根据权利要求9所述的显示装置，其中，所述第一比较结果为1，所述第二比较结果为-1。
  11. 根据权利要求7所述的显示装置，其中，所述比较控制器计算所述比较结果的算术平均值以获得所述相似度。
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7864150B2 (en) * 2004-04-01 2011-01-04 Hannstar Display Corporation Driving method for a liquid crystal display
CN103236244A (zh) * 2013-04-25 2013-08-07 深圳市华星光电技术有限公司 液晶面板及对其像素进行预充电压的方法、液晶显示器
CN103915076A (zh) * 2014-04-25 2014-07-09 青岛海信电器股份有限公司 驱动液晶显示方法、液晶显示装置和快门式3d显示方法
CN104867474A (zh) * 2015-06-19 2015-08-26 合肥鑫晟光电科技有限公司 用于tft-lcd的源极驱动器、驱动电路及驱动方法
CN105096828A (zh) * 2015-08-18 2015-11-25 京东方科技集团股份有限公司 显示驱动方法及装置
CN105513520A (zh) * 2014-10-13 2016-04-20 三星显示有限公司 驱动显示面板的方法和系统及用于执行该方法的显示装置
CN105702213A (zh) * 2016-03-22 2016-06-22 北京大学深圳研究生院 显示装置及其显示驱动器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4170242B2 (ja) * 2004-03-04 2008-10-22 シャープ株式会社 液晶表示装置および液晶表示装置の駆動方法
CN101800036B (zh) * 2009-02-05 2012-12-12 联咏科技股份有限公司 驱动一液晶显示器的方法及其相关驱动装置
CN102103836A (zh) * 2009-12-18 2011-06-22 华映视讯（吴江）有限公司 可调变充放电时间的液晶显示装置及相关驱动方法
CN103366670A (zh) * 2012-04-06 2013-10-23 联咏科技股份有限公司 显示驱动优化方法与显示驱动器
CN103927985B (zh) * 2014-04-01 2016-04-06 深圳市华星光电技术有限公司 一种oled显示器的像素驱动电路、阵列基板以及相应显示器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7864150B2 (en) * 2004-04-01 2011-01-04 Hannstar Display Corporation Driving method for a liquid crystal display
CN103236244A (zh) * 2013-04-25 2013-08-07 深圳市华星光电技术有限公司 液晶面板及对其像素进行预充电压的方法、液晶显示器
CN103915076A (zh) * 2014-04-25 2014-07-09 青岛海信电器股份有限公司 驱动液晶显示方法、液晶显示装置和快门式3d显示方法
CN105513520A (zh) * 2014-10-13 2016-04-20 三星显示有限公司 驱动显示面板的方法和系统及用于执行该方法的显示装置
CN104867474A (zh) * 2015-06-19 2015-08-26 合肥鑫晟光电科技有限公司 用于tft-lcd的源极驱动器、驱动电路及驱动方法
CN105096828A (zh) * 2015-08-18 2015-11-25 京东方科技集团股份有限公司 显示驱动方法及装置
CN105702213A (zh) * 2016-03-22 2016-06-22 北京大学深圳研究生院 显示装置及其显示驱动器

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