WO2016033831A1 - 过驱动方法、电路及显示装置 - Google Patents

过驱动方法、电路及显示装置 Download PDF

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WO2016033831A1
WO2016033831A1 PCT/CN2014/086650 CN2014086650W WO2016033831A1 WO 2016033831 A1 WO2016033831 A1 WO 2016033831A1 CN 2014086650 W CN2014086650 W CN 2014086650W WO 2016033831 A1 WO2016033831 A1 WO 2016033831A1
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Prior art keywords
current frame
overdrive
eye picture
gray level
circuit
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PCT/CN2014/086650
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English (en)
French (fr)
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周锦杰
谭小平
陈宥烨
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深圳市华星光电技术有限公司
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Priority to US14/417,159 priority Critical patent/US20160063932A1/en
Publication of WO2016033831A1 publication Critical patent/WO2016033831A1/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
    • G09G3/3648—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
    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an overdrive method, a circuit, and a display device.
  • the 3D display technology can realistically display a stereoscopic image by making the viewer's left and right eyes see different screens, respectively.
  • the shutter type 3D technology is one of the current mainstream 3D technologies.
  • the principle of the shutter type 3D technology is that the display device alternately displays the left eye picture and the right eye picture at a refresh rate of 120 Hz or higher, and simultaneously switches the left glasses with the shutter glasses.
  • the switch of the film and the right eyeglass lens allows the viewer's left eye to see only the left eye image, and the right eye only sees the right eye image, and then the viewer's brain is integrated to realize the 3D display effect.
  • liquid crystal displays generally employ an inversion driving mode in which the voltages for driving the liquid crystals are alternate positive polarity and negative polarity, and polarity inversion is performed once per frame.
  • the luminance at the time of the positive polarity driving is higher (or lower) than the luminance at the time of the negative polarity driving.
  • the left eye picture and the right eye picture alternately appear, while the left eye picture is driven by a positive (negative) polarity, and the right eye picture is driven by a negative (positive) polarity, and the left eye picture and the right side appear.
  • the uneven brightness of the eye picture affects the effect of 3D display.
  • An object of the present invention is to provide an Over Drive (OD) method, a circuit, and a display device to solve the technical problem of uneven brightness of a left-eye image and a right-eye image appearing in the prior art.
  • OD Over Drive
  • the invention provides an overdrive method comprising:
  • the first overdrive table is queried according to the gray level of the current frame and the gray level of the previous frame, and the grayscale value of the overdrive is obtained;
  • the second overdrive table is queried according to the gray level of the current frame and the gray level of the previous frame, and the grayscale value of the overdrive is obtained.
  • the determining whether the current frame is a left eye picture or a right eye picture is specifically:
  • the control signal outputted in synchronization with the gray-scale signal is read, and the high-low level of the control signal is judged to determine whether the current frame is a left-eye picture or a right-eye picture.
  • the present invention also provides an overdrive circuit comprising: a data distributor, a buffer, a first lookup table circuit and a second lookup table circuit;
  • the data distributor is configured to obtain a gray level of the current frame, and determine whether the current frame is a left eye picture or a right eye picture, and if the current frame is a left eye picture, output the gray level of the current frame to the first table lookup circuit. If the current frame is a right eye picture, output the gray level of the current frame to the second lookup table circuit;
  • the buffer is used to buffer the gray level of the previous frame
  • the first look-up table circuit is configured to query the first overdrive table according to the gray level of the current frame and the gray level of the previous frame, and obtain the grayscale value of the overdrive;
  • the second look-up table circuit is configured to query the second overdrive table according to the grayscale of the current frame and the grayscale of the previous frame, and obtain the grayscale value of the overdrive.
  • the data distributor is specifically configured to: acquire a grayscale of a current frame, and read a control signal output synchronously with the grayscale signal, and determine a current frame as a left eye by determining a high level and a low level of the control signal. Still the right eye picture;
  • the gray level of the current frame is output to the first lookup table circuit, and if the current frame is a right eye picture, the gray level of the current frame is output to the second lookup table circuit.
  • the present invention also provides a display device including a driving unit and a display unit, wherein the driving unit includes an overdrive circuit;
  • the overdrive circuit includes a data distributor, a buffer, a first lookup table circuit, and a second lookup table circuit;
  • the data distributor is configured to obtain a gray level of the current frame, and determine whether the current frame is a left eye picture or a right eye picture, and if the current frame is a left eye picture, output the gray level of the current frame to the first table lookup circuit. If the current frame is a right eye painting a face, the grayscale of the current frame is output to the second look-up table circuit;
  • the buffer is used to buffer the gray level of the previous frame
  • the first look-up table circuit is configured to query the first overdrive table according to the gray level of the current frame and the gray level of the previous frame, obtain the overdrive driven grayscale value, and output the value to the display unit;
  • the second look-up table circuit is configured to query the second overdrive table according to the gray level of the current frame and the gray level of the previous frame, obtain the overdrive grayscale value, and output the value to the display unit.
  • the driving unit further includes a timing controller for outputting a control signal outputted in synchronization with the grayscale signal;
  • the data distributor is specifically configured to: acquire a grayscale of a current frame, and read the control signal, and determine whether the current frame is a left-eye image or a right-eye image by determining a high level and a low level of the control signal;
  • the gray level of the current frame is output to the first lookup table circuit, and if the current frame is a right eye picture, the gray level of the current frame is output to the second lookup table circuit.
  • the driving unit further includes a memory for storing the first overdrive table and the second overdrive table.
  • the present invention brings the following beneficial effects: in the overdrive method provided by the present invention, first determining whether the current frame is a left eye picture or a right eye picture, and querying the first overdrive table and the second overdrive table respectively according to the judgment result, thereby Obtaining different overdrive gray scale values for respectively aiming the left eye picture and the right eye picture, so that the brightness of the left eye picture and the right eye picture can be consistent to solve the left eye picture and the right eye picture in the prior art.
  • Technical problem of uneven brightness is determining whether the current frame is a left eye picture or a right eye picture, and querying the first overdrive table and the second overdrive table respectively according to the judgment result, thereby Obtaining different overdrive gray scale values for respectively aiming the left eye picture and the right eye picture, so that the brightness of the left eye picture and the right eye picture can be consistent to solve the left eye picture and the right eye picture in the prior art.
  • FIG. 2 is a schematic diagram of an overdrive circuit according to Embodiment 1 of the present invention.
  • FIG 3 is a schematic diagram of a driving unit in a display device according to Embodiment 2 of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • an embodiment of the present invention provides an overdrive method for use in a shutter type 3D display device.
  • the overdrive method includes:
  • S1 Get the gray level of the current frame, that is, the gray level of one frame currently to be displayed.
  • S2 Determine whether the current frame is a left eye picture or a right eye picture.
  • a control signal outputted in synchronization with the gray-scale signal may be outputted in the display device, the control signal having two levels of a high level and a low level, and the change period is matched with the frame period, so that the control The high level of the signal is output synchronously with the left eye picture (or the right eye picture), and the low level of the control signal is output synchronously with the right eye picture (or the left eye picture).
  • control signal is read, and by determining the high and low levels of the control signal, it can be determined whether the current frame is a left eye picture or a right eye picture.
  • the 3D display can be performed by using the overdrive gray scale value obtained in step S3 or step S4.
  • an embodiment of the present invention further provides an overdrive circuit, including a data distributor (DMUX) 1, a buffer 2, a first lookup table circuit 3, and a second lookup table circuit 4.
  • DMUX data distributor
  • the data distributor 1 is configured to acquire the gray level of the current frame, and read a control signal output synchronously with the gray scale signal, and determine whether the current frame is a left eye picture or a right eye picture by determining a high level and a low level of the control signal. If the current frame is a left eye picture, Then, the grayscale of the current frame is output to the first look-up table circuit 3; if the current frame is the right-eye frame, the grayscale of the current frame is output to the second look-up table circuit 4.
  • Buffer 2 is used to buffer the gray level of the previous frame.
  • the gray level of the current frame may be stored in the buffer 2 as the "gray scale of the previous frame" when the next frame is overdriven.
  • the first look-up table circuit 3 is configured to query the first overdrive table according to the gray scale of the current frame (left eye picture) and the gray level of the previous frame (right eye picture), and obtain the overdrive driven grayscale value.
  • the second look-up table circuit 4 is configured to query the second overdrive table according to the gray scale of the current frame (right eye picture) and the gray level of the previous frame (left eye picture), and obtain the overdrive driven grayscale value.
  • the overdrive gray scale value acquired by the first lookup table circuit 3 or the second lookup table circuit 4 can be used for 3D display.
  • the overdrive method and the overdrive circuit provided by the embodiment of the present invention, first determining whether the current frame is a left eye frame or a right eye frame, and separately querying the first overdrive table and the second overdrive table according to the judgment result, thereby obtaining different Overdrive grayscale values for the left eye and right eye images, respectively.
  • the overdrive grayscale value of the left eye picture may be made larger than the overdrive grayscale value of the right eye picture by adjusting the first overdrive table or the second overdrive table. If the brightness of the right eye picture is low, the same method can be used to make the overdrive grayscale value of the right eye picture larger than the overdrive grayscale value of the left eye picture. In this way, the brightness of the left-eye picture and the right-eye picture can be made uniform, so as to solve the technical problem of uneven brightness of the left-eye picture and the right-eye picture in the prior art, and the display effect of the 3D display is improved.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment of the invention provides a display device, which may specifically be a liquid crystal display with a 3D function, a liquid crystal television or the like.
  • the display device includes a driving unit and a display unit (liquid crystal module).
  • the driving unit includes an overdrive circuit 10 and a Timing Controller (TCON) 20, and the overdrive circuit 10 includes a data distributor 1, a buffer 2, a first lookup circuit 3, and a second Look up the circuit 4.
  • TCON Timing Controller
  • the timing controller 20 is configured to output a control signal synchronously outputted with the gray scale signal, the control signal having two levels of a high level and a low level, and the change period thereof is matched with the frame period to make the control signal high level Outputted in synchronization with the left eye picture (or the right eye picture), the low level of the control signal is output in synchronization with the right eye picture (or the left eye picture).
  • the data distributor 1 is configured to acquire the gray level of the current frame, and read the control signal output by the timing controller 20, and determine whether the current frame is a left eye picture or a right eye picture by determining a high level and a low level of the control signal. If the current frame is a left eye picture, the gray level of the current frame is output to the first lookup table circuit 3; if the current frame is a right eye picture, the gray level of the current frame is input. Exit to the second look-up table circuit 4.
  • Buffer 2 is used to buffer the gray level of the previous frame.
  • the gray level of the current frame may be stored in the buffer 2 as the "gray scale of the previous frame" when the next frame is overdriven.
  • the first look-up table circuit 3 is configured to query the first overdrive table according to the gray scale of the current frame (left eye picture) and the gray level of the previous frame (right eye picture), and obtain the overdrive driven grayscale value.
  • the second look-up table circuit 4 is configured to query the second overdrive table according to the gray scale of the current frame (right eye picture) and the gray level of the previous frame (left eye picture), and obtain the overdrive driven grayscale value.
  • the overdrive gray scale value acquired by the first lookup table circuit 3 or the second lookup table circuit 4 can be input to the display unit, thereby realizing 3D display.
  • the driving unit further includes a memory 30, and the memory 30 may be connected to the timing controller 20 for storing the first overdrive table and the second overdrive table.
  • the memory may also be directly connected to the first look-up table circuit and the second look-up table circuit.
  • the display device provided in this embodiment has the same technical features as the overdrive method and the overdrive circuit provided in the first embodiment, so that the same technical problem can be solved and the same technical effect can be achieved.

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Abstract

一种过驱动方法、电路及显示装置，属于显示技术领域，解决了现有技术中出现的左眼画面与右眼画面的亮度不均的技术问题。该过驱动方法，包括：获取当前帧的灰阶（S1）；判断当前帧为左眼画面还是右眼画面（S2）；如果当前帧为左眼画面，则根据当前帧的灰阶和上一帧的灰阶，查询第一过驱动表，获取过驱动的灰阶值（S3）；如果当前帧为右眼画面，则根据当前帧的灰阶和上一帧的灰阶，查询第二过驱动表，获取过驱动的灰阶值（S4）。

Description

过驱动方法、电路及显示装置
本申请要求享有2014年9月2日提交的名称为“过驱动方法、电路及显示装置”的中国专利申请CN201410443944.6的优先权，其全部内容通过引用并入本文中。
技术领域
本发明涉及显示技术领域，具体地说，涉及一种过驱动方法、电路及显示装置。
背景技术
3D显示技术通过使观看者的左眼和右眼分别看到不同的画面，从而能够逼真的显示出立体画面。
其中，快门式3D技术为目前主流的3D技术之一，快门式3D技术的原理是，显示装置以120Hz或更高的刷新率交替显示左眼画面和右眼画面，同时配合快门眼镜切换左眼镜片和右眼镜片的开关，使观看者的左眼只看到左眼画面，右眼只看到右眼画面，再经观看者的大脑综合，即可实现3D显示效果。
另一方面，液晶显示器通常会采用反转驱动模式，即驱动液晶的电压为交替的正极性和负极性，并且每一帧进行一次极性反转。但是，由于公共电极的电压偏差，会使正极性驱动时的亮度高于(或低于)负极性驱动时的亮度。而在3D显示中是左眼画面和右眼画面交替出现，而左眼画面都是正(负)极性驱动，右眼画面都是负(正)极性驱动，就会出现左眼画面与右眼画面的亮度不均的现象，影响3D显示的效果。
发明内容
本发明的目的在于提供一种过驱动(Over Drive，简称OD)方法、电路及显示装置，以解决现有技术中出现的左眼画面与右眼画面的亮度不均的技术问题。
本发明提供一种过驱动方法，包括：
获取当前帧的灰阶；
判断当前帧为左眼画面还是右眼画面；
如果当前帧为左眼画面，则根据当前帧的灰阶和上一帧的灰阶，查询第一过驱动表，获取过驱动的灰阶值；
如果当前帧为右眼画面，则根据当前帧的灰阶和上一帧的灰阶，查询第二过驱动表，获取过驱动的灰阶值。
优选的，所述判断当前帧为左眼画面还是右眼画面，具体为：
读取与灰阶信号同步输出的控制信号，通过判断所述控制信号的高低电平，判断当前帧为左眼画面还是右眼画面。
本发明还提供一种过驱动电路，包括：数据分配器、缓存器、第一查表电路和第二查表电路；
所述数据分配器用于获取当前帧的灰阶，并判断当前帧为左眼画面还是右眼画面，如果当前帧为左眼画面，则将当前帧的灰阶输出至所述第一查表电路，如果当前帧为右眼画面，则将当前帧的灰阶输出至所述第二查表电路；
所述缓存器用于缓存上一帧的灰阶；
所述第一查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第一过驱动表，获取过驱动的灰阶值；
所述第二查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第二过驱动表，获取过驱动的灰阶值。
优选的，所述数据分配器具体用于，获取当前帧的灰阶，并读取与灰阶信号同步输出的控制信号，通过判断所述控制信号的高低电平，判断当前帧为左眼画面还是右眼画面；
如果当前帧为左眼画面，则将当前帧的灰阶输出至第一查表电路，如果当前帧为右眼画面，则将当前帧的灰阶输出至第二查表电路。
本发明还提供一种显示装置，包括驱动单元和显示单元，所述驱动单元中包括过驱动电路；
所述过驱动电路包括数据分配器、缓存器、第一查表电路和第二查表电路；
所述数据分配器用于获取当前帧的灰阶，并判断当前帧为左眼画面还是右眼画面，如果当前帧为左眼画面，则将当前帧的灰阶输出至所述第一查表电路，如果当前帧为右眼画 面，则将当前帧的灰阶输出至所述第二查表电路；
所述缓存器用于缓存上一帧的灰阶；
所述第一查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第一过驱动表，获取过驱动的灰阶值，并输出至所述显示单元；
所述第二查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第二过驱动表，获取过驱动的灰阶值，并输出至所述显示单元。
优选的，所述驱动单元中还包括时序控制器，用于输出与灰阶信号同步输出的控制信号；
所述数据分配器具体用于，获取当前帧的灰阶，并读取所述控制信号，通过判断所述控制信号的高低电平，判断当前帧为左眼画面还是右眼画面；
如果当前帧为左眼画面，则将当前帧的灰阶输出至第一查表电路，如果当前帧为右眼画面，则将当前帧的灰阶输出至第二查表电路。
进一步，所述驱动单元中还包括存储器，用于存储所述第一过驱动表和所述第二过驱动表。
本发明带来了以下有益效果：本发明提供的过驱动方法中，首先判断当前帧为左眼画面还是右眼画面，并根据判断结果分别查询第一过驱动表和第二过驱动表，从而获取不同的过驱动的灰阶值，用以分别针对左眼画面和右眼画面，使左眼画面和右眼画面的亮度能够达到一致，以解决现有技术中左眼画面与右眼画面的亮度不均的技术问题。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要的附图做简单的介绍：
图1是本发明实施例一提供的过驱动方法的流程图；
图2是本发明实施例一提供的过驱动电路的示意图；
图3是本发明实施例二提供的显示装置中驱动单元的示意图。
具体实施方式
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。需要说明的是，只要不构成冲突，本发明中的各个实施例以及各实施例中的各个特征可以相互结合，所形成的技术方案均在本发明的保护范围之内。
实施例一：
如图1所示，本发明实施例提供一种过驱动方法，用于快门式3D显示装置中。该过驱动方法包括：
S1：获取当前帧的灰阶，也就是当前将要显示的一帧画面的灰阶。
S2：判断当前帧为左眼画面还是右眼画面。
作为一个优选方案，可以在显示装置中输出一个与灰阶信号同步输出的控制信号，该控制信号具有高电平和低电平两种电平，且其变化周期与帧周期相匹配，使该控制信号的高电平与左眼画面(或右眼画面)同步输出，该控制信号的低电平与右眼画面(或左眼画面)同步输出。
在本步骤中，读取该控制信号，通过判断控制信号的高低电平，即可判断当前帧为左眼画面还是右眼画面。
S3：如果当前帧为左眼画面，则根据当前帧(左眼画面)的灰阶和上一帧(右眼画面)的灰阶，查询第一过驱动表，获取过驱动的灰阶值。
S4：如果当前帧为右眼画面，则根据当前帧(右眼画面)的灰阶和上一帧(左眼画面)的灰阶，查询第二过驱动表，获取过驱动的灰阶值。
然后即可利用步骤S3或步骤S4中获取的过驱动的灰阶值进行3D显示。
如图2所示，本发明实施例还相应的提供一种过驱动电路，包括数据分配器(DMUX)1、缓存器2、第一查表电路3和第二查表电路4。
数据分配器1用于获取当前帧的灰阶，并读取与灰阶信号同步输出的控制信号，通过判断控制信号的高低电平，判断当前帧为左眼画面还是右眼画面。如果当前帧为左眼画面， 则将当前帧的灰阶输出至第一查表电路3；如果当前帧为右眼画面，则将当前帧的灰阶输出至第二查表电路4。
缓存器2用于缓存上一帧的灰阶。在当前帧显示时，可以将当前帧的灰阶存入缓存器2，作为下一帧过驱动时的“上一帧的灰阶”。
第一查表电路3用于根据当前帧(左眼画面)的灰阶和上一帧(右眼画面)的灰阶，查询第一过驱动表，获取过驱动的灰阶值。第二查表电路4用于根据当前帧(右眼画面)的灰阶和上一帧(左眼画面)的灰阶，查询第二过驱动表，获取过驱动的灰阶值。第一查表电路3或第二查表电路4获取的过驱动的灰阶值，即可用于进行3D显示。
本发明实施例提供的过驱动方法及过驱动电路中，首先判断当前帧为左眼画面还是右眼画面，并根据判断结果分别查询第一过驱动表和第二过驱动表，从而获取不同的过驱动的灰阶值，用以分别针对左眼画面和右眼画面。
如果左眼画面的亮度偏低，可以通过调整第一过驱动表或第二过驱动表，使左眼画面的过驱动的灰阶值大于右眼画面的过驱动的灰阶值。如果右眼画面的亮度偏低，也可以利用同样的方法，使右眼画面的过驱动的灰阶值大于左眼画面的过驱动的灰阶值。这样即可使左眼画面和右眼画面的亮度达到一致，以解决现有技术中左眼画面与右眼画面的亮度不均的技术问题，改善了3D显示的显示效果。
实施例二：
本发明实施例提供一种显示装置，具体可以是具有3D功能的液晶显示器、液晶电视等。该显示装置包括驱动单元和显示单元(液晶模组)。
如图3所示，驱动单元中包括过驱动电路10和时序控制器(Timing Controller，简称TCON)20，过驱动电路10包括数据分配器1、缓存器2、第一查表电路3和第二查表电路4。
时序控制器20用于输出与灰阶信号同步输出的控制信号，该控制信号具有高电平和低电平两种电平，且其变化周期与帧周期相匹配，使该控制信号的高电平与左眼画面(或右眼画面)同步输出，该控制信号的低电平与右眼画面(或左眼画面)同步输出。
数据分配器1用于获取当前帧的灰阶，并读取时序控制器20输出的控制信号，通过判断控制信号的高低电平，判断当前帧为左眼画面还是右眼画面。如果当前帧为左眼画面，则将当前帧的灰阶输出至第一查表电路3；如果当前帧为右眼画面，则将当前帧的灰阶输 出至第二查表电路4。
缓存器2用于缓存上一帧的灰阶。在当前帧显示时，可以将当前帧的灰阶存入缓存器2，作为下一帧过驱动时的“上一帧的灰阶”。
第一查表电路3用于根据当前帧(左眼画面)的灰阶和上一帧(右眼画面)的灰阶，查询第一过驱动表，获取过驱动的灰阶值。第二查表电路4用于根据当前帧(右眼画面)的灰阶和上一帧(左眼画面)的灰阶，查询第二过驱动表，获取过驱动的灰阶值。第一查表电路3或第二查表电路4获取的过驱动的灰阶值，即可输入至显示单元，从而实现3D显示。
进一步，本实施例中，驱动单元中还包括存储器30，存储器30可以与时序控制器20相连，用于存储第一过驱动表和第二过驱动表。在其他实施方式中，存储器也可以直接与第一查表电路、第二查表电路相连。
本实施例提供的显示装置与实施例一提供的过驱动方法和过驱动电路，具有相同的技术特征，所以也能解决相同的技术问题，达到相同的技术效果。
虽然本发明所公开的实施方式如上，但所述的内容只是为了便于理解本发明而采用的实施方式，并非用以限定本发明。任何本发明所属技术领域内的技术人员，在不脱离本发明所公开的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (7)

  1. 一种过驱动方法，包括：
    获取当前帧的灰阶；
    判断当前帧为左眼画面还是右眼画面；
    如果当前帧为左眼画面，则根据当前帧的灰阶和上一帧的灰阶，查询第一过驱动表，获取过驱动的灰阶值；
    如果当前帧为右眼画面，则根据当前帧的灰阶和上一帧的灰阶，查询第二过驱动表，获取过驱动的灰阶值。
  2. 如权利要求1所述的过驱动方法，其中，所述判断当前帧为左眼画面还是右眼画面，具体为：
    读取与灰阶信号同步输出的控制信号，通过判断所述控制信号的高低电平，判断当前帧为左眼画面还是右眼画面。
  3. 一种过驱动电路，包括：数据分配器、缓存器、第一查表电路和第二查表电路；
    所述数据分配器用于获取当前帧的灰阶，并判断当前帧为左眼画面还是右眼画面，如果当前帧为左眼画面，则将当前帧的灰阶输出至所述第一查表电路，如果当前帧为右眼画面，则将当前帧的灰阶输出至所述第二查表电路；
    所述缓存器用于缓存上一帧的灰阶；
    所述第一查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第一过驱动表，获取过驱动的灰阶值；
    所述第二查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第二过驱动表，获取过驱动的灰阶值。
  4. 如权利要求3所述的过驱动电路，其中，所述数据分配器具体用于，获取当前帧的灰阶，并读取与灰阶信号同步输出的控制信号，通过判断所述控制信号的高低电平，判断当前帧为左眼画面还是右眼画面；
    如果当前帧为左眼画面，则将当前帧的灰阶输出至第一查表电路，如果当前帧为右眼画面，则将当前帧的灰阶输出至第二查表电路。
  5. 一种显示装置，包括驱动单元和显示单元，所述驱动单元中包括过驱动电路；
    所述过驱动电路包括数据分配器、缓存器、第一查表电路和第二查表电路；
    所述数据分配器用于获取当前帧的灰阶，并判断当前帧为左眼画面还是右眼画面，如果当前帧为左眼画面，则将当前帧的灰阶输出至所述第一查表电路，如果当前帧为右眼画面，则将当前帧的灰阶输出至所述第二查表电路；
    所述缓存器用于缓存上一帧的灰阶；
    所述第一查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第一过驱动表，获取过驱动的灰阶值，并输出至所述显示单元；
    所述第二查表电路用于根据当前帧的灰阶和上一帧的灰阶，查询第二过驱动表，获取过驱动的灰阶值，并输出至所述显示单元。
  6. 如权利要求5所述的显示装置，其中，所述驱动单元中还包括时序控制器，用于输出与灰阶信号同步输出的控制信号；
    所述数据分配器具体用于，获取当前帧的灰阶，并读取所述控制信号，通过判断所述控制信号的高低电平，判断当前帧为左眼画面还是右眼画面；
    如果当前帧为左眼画面，则将当前帧的灰阶输出至第一查表电路，如果当前帧为右眼画面，则将当前帧的灰阶输出至第二查表电路。
  7. 如权利要求6所述的显示装置，其中，所述驱动单元中还包括存储器，用于存储所述第一过驱动表和所述第二过驱动表。
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