WO2015096241A1 - 一种数据信号极性反转驱动方法及液晶面板画面显示方法 - Google Patents

一种数据信号极性反转驱动方法及液晶面板画面显示方法 Download PDF

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WO2015096241A1
WO2015096241A1 PCT/CN2014/070926 CN2014070926W WO2015096241A1 WO 2015096241 A1 WO2015096241 A1 WO 2015096241A1 CN 2014070926 W CN2014070926 W CN 2014070926W WO 2015096241 A1 WO2015096241 A1 WO 2015096241A1
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Prior art keywords
polarity
data signal
frame
data signals
eye image
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PCT/CN2014/070926
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English (en)
French (fr)
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樊勇
方斌
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深圳市华星光电技术有限公司
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Priority to US14/241,810 priority Critical patent/US9336734B2/en
Publication of WO2015096241A1 publication Critical patent/WO2015096241A1/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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing

Definitions

  • the present invention relates to a three-dimensional stereoscopic display technology, and in particular to a data signal polarity inversion driving method and a liquid crystal panel screen display method. Background technique
  • the three-dimensional display technology can provide more vivid stereoscopic images, which has become one of the important directions for the development of display technology today.
  • the common three-dimensional image forming technology is the shutter stereo glasses technology.
  • the working principle of the technology is to make the left and right glasses of the 3D glasses turn in turn (as shown in Figure 1): When the right lens is opened, the image on the screen is simultaneously output to the right eye; When turned on, the image of the left eye is simultaneously outputted on the screen, and then the angle difference between the left and right eye angles causes the image viewer to superimpose the images of the left and right eyes into a three-dimensional image with depth of field and layering in the brain.
  • the liquid crystal display device Due to its slimness, low power consumption and no radiation pollution, the liquid crystal display device has become the mainstream configuration of various industries and even home entertainment displays. Therefore, the three-dimensional stereoscopic liquid crystal display with the shutter stereoscopic display glasses technology has also become a new development hot spot.
  • the working principle of the liquid crystal display device is to realize image display of different gray levels by changing the rotation angle of the liquid crystal molecules. If the DC mode is used, the mobile ions in the liquid crystal material will move toward the transparent conductive film IT0 in the same direction under the influence of the electric field. This polarization phenomenon will generate another electric field in the panel and affect the steering of the liquid crystal molecules. DC residual phenomenon occurs.
  • the liquid crystal display panel is usually driven by an alternating current mode.
  • the specific implementation manner is to change the positive and negative polarities of the image information data signal so as to act on the pixel electrode of the pixel unit.
  • the voltage changes periodically.
  • a liquid crystal display device with a 256-gray display is displayed, and a light-transmissive bright picture (a white picture of 255 steps) is recorded as L255, which is impervious.
  • the dark picture of the light (the black picture of the 0th order) is denoted as L0.
  • the positive and negative driving voltages of the white screen are 7V and 5V
  • the positive and negative driving voltages of the black screen are IV and 11V
  • the common electrode voltage is 6V.
  • the voltage on the panel and the difference between the voltage and the common electrode voltage will have the following changes as shown in Table 1 below: Himp axis input
  • the voltage difference across the pixel electrode relative to the common electrode varies between IV and 5V. That is, the voltage applied to the liquid crystal during the positive polarity driving period is IV; and the voltage applied to the liquid crystal during the negative polarity driving period is 5V. Since the voltages acting on the liquid crystal during the positive and negative polarity driving are too different, and are always positive, they cannot cancel each other out. Therefore, after a long time of operation, the point will have a residual charge similar to DC residual, resulting in three-dimensional residual image. phenomenon. In the prior art, a multi-frame image polarity inversion driving method is adopted to eliminate the above-described three-dimensional image sticking phenomenon. As shown in FIG.
  • the two-frame image polarity inversion driving method is taken as an example. Since the polarity of the data signal is switched every two frames, in this method, for one of the pixel electrodes (which may also be a sub-pixel electrode) in the liquid crystal display panel, on the one hand, there is more time for charging, thereby The preset voltage potential can be better achieved. On the other hand, the voltage on the pixel electrode and the difference between the voltage and the common electrode voltage are as shown in Table 2:
  • the voltage difference with respect to the common electrode on the pixel electrode is repeatedly cycled between IV - 5V - -1V - 5V. That is, the voltage applied to the liquid crystal during the positive polarity driving period It is IV and -5 V; the voltage applied to the liquid crystal during the negative polarity driving period is -IV and 5V.
  • the voltage difference on the pixel electrode with respect to the common electrode during the positive and negative polarity driving is mutually compensated, so that the image sticking phenomenon does not occur.
  • another problem arises, that is, the problem of uneven brightness of the left and right eyes. This phenomenon is particularly prominent for liquid crystal display panels that use charge sharing technology to improve color shift.
  • the sharing capacitor is provided in the pixel unit of the liquid crystal display panel using the charge sharing technique to redistribute the charge on the main region and the sub-region of the pixel electrode under the action of the control signal.
  • the shared capacitor has a function of storing the charge.
  • the image will be relatively bright due to the charge accumulation effect;
  • the charge obtained by the capacitor during the new frame period is opposite to the polarity of the charge stored during the previous frame, the image will be relatively dark because the charges cancel each other out. Therefore, for inputting the same data signal (such as L255 shown in Table 3 below), the liquid crystal display panel operating in the dual-frame image polarity inversion driving mode always outputs the brightness of the left-eye image to the right. The brightness of the eye image is low.
  • an object of the present invention is to provide a data signal polarity inversion driving method and a liquid crystal panel picture display method.
  • the method can eliminate the residual three-dimensional image of the shutter glasses and improve the brightness difference between the left and right eyes, and has outstanding practicability.
  • the invention provides a data signal polarity inversion driving method, comprising:
  • the data signals of the first frame, the fourth frame, the fifth frame, and the sixth frame image may be positive, the second frame, the third frame, the seventh frame, and the first frame.
  • the data signal of the eight frames of images is negative.
  • the data signals of the first frame, the fourth frame, the seventh frame, and the eighth frame image are positive, the second frame, the third frame, the fifth frame, and the first frame.
  • the data signal of the six-frame image is negative.
  • the data signals of the first frame, the second frame, the fifth frame, and the eighth frame image may be positive, third, fourth, sixth, and The data signal of the seven frames of images is negative.
  • the data signals of the first frame, the second frame, the sixth frame, and the seventh frame image may be negative polarity, the third frame, the fourth frame, the fifth frame, and the first frame.
  • the data signal of the eight frames of images is positive.
  • the present invention also provides a liquid crystal panel screen display method, comprising the steps of: alternately providing a data signal of a left eye image and a data signal of a right eye image, and
  • the data signal of the left eye image in each cycle is the same as the data signal of the right eye image of the previous frame, and the data signal of the right eye image is equal to the same polarity as the data signal of the previous frame of the left eye image.
  • the data signals of the same monocular image adjacent to each other half of the cycle are opposite in polarity;
  • the right eye image is output according to the data signal of the even frame.
  • the data signals of the first frame, the fourth frame, the fifth frame, and the sixth frame image may be positive, the second frame, the third frame, the seventh frame, and the first frame.
  • the data signal of the eight frames of images is negative.
  • the data signals of the first frame, the fourth frame, the seventh frame, and the eighth frame image are positive, the second frame, the third frame, the fifth frame, and the first frame.
  • the data signal of the six-frame image is negative.
  • the data signals of the first frame, the second frame, the fifth frame, and the eighth frame image may be positive, third, fourth, sixth, and The data signal of the seven frames of images is negative.
  • the data signals of the first frame, the second frame, the sixth frame, and the seventh frame image may be negative polarity, the third frame, the fourth frame, the fifth frame, and the first frame.
  • the data signal of the eight frames of images is positive.
  • each frame of the right eye image or the left eye image may be output in a dot inversion manner.
  • each frame of the right eye image or the left eye image may be output in a line inversion manner.
  • FIG. 1 is a schematic view showing a sequential rotation switch of a left eyeglass lens and a right eyeglass lens of a conventional shutter eyeglass;
  • FIG. 2 is a schematic diagram showing a polarity inversion of a single frame image of a conventional liquid crystal display panel;
  • FIG. 3 is a schematic diagram of polarity reversal of a two-frame image of a conventional liquid crystal display panel
  • FIG. 4 is a schematic view showing the polarity inversion of a data signal of the liquid crystal display panel of the present invention. Specific form
  • the present invention employs a data signal driving method different from the prior art, i.e., irregularly changing the polarity of the data signal of the liquid crystal display panel.
  • the driving method includes the following steps:
  • the data signal of the left eye image in each cycle is the same as the data signal of the right eye image of the previous frame, and the data signal of the right eye image is equal to the same polarity as the data signal of the previous frame of the left eye image.
  • the data signals of the same monocular image adjacent to each other in half cycle are opposite in polarity.
  • the liquid crystal display working with the shutter stereoscopic display glasses needs to alternately output the left eye image and the right eye image, and the polarity of the data signal remains constant during each frame of the single eye image period. Sex or negative polarity is unchanged.
  • the polarity switching state and the polarity state of the data signal of the liquid crystal display panel may be in the four cases as shown in FIG. 4 (that is, Table 4 in the following table).
  • a liquid crystal display device of 256 gray scale display in the background art will be described as an example.
  • a light-emitting bright picture (a white picture of 255 steps) is recorded as L255, and a dark picture (black picture of 0th order) that is opaque is recorded as L0.
  • the positive and negative driving voltages of the white picture are 7V and 5V, black screen
  • the positive and negative driving voltages are IV and 11V and the common electrode voltage is 6V.
  • the LCD panel switches the polarity of the data signal as shown in Table 5 below:
  • the voltage of the data signal of the first frame image is the positive polarity driving voltage of the white screen 7V;
  • the voltage of the data signal of the second frame image is the negative driving voltage of the black screen 11V;
  • the voltage of the data signal of the third frame image is the negative driving voltage of the white screen 5V;
  • the voltage of the data signal of the fourth frame image is the positive polarity driving voltage IV of the black screen
  • the voltage of the data signal of the first frame image is the positive polarity driving voltage of the white screen 7V;
  • the voltage of the data signal of the second frame image is the positive polarity driving voltage IV of the black screen
  • the voltage of the data signal of the third frame image is the negative driving voltage of the white screen 5V;
  • the voltage of the data signal of the fourth frame image is the negative driving voltage of the black screen 11V;
  • the voltage difference of the pixel electrode with respect to the common electrode is cyclically changed in a manner of 1V - 5V ⁇ _ 1V ⁇ _ 5V ⁇ 1V ⁇ _ 5V ⁇ _ 1V ⁇ 5V .
  • the voltage applied to the liquid crystal during the positive polarity driving period is IV and -5 V; the voltage applied to the liquid crystal during the negative polarity driving period is -IV and 5V.
  • the voltage difference on the pixel electrode with respect to the common electrode during the positive and negative polarity driving is mutually compensated. Therefore, the present invention, like the multi-frame image polarity inversion driving method described in the background art, does not cause a three-dimensional image sticking phenomenon, and can greatly improve the screen display quality of the three-dimensional liquid crystal display device.
  • the polarity of the data signal of the second frame image is negative polarity, which is opposite to the polarity of the data signal of the first frame image, and the brightness is dark;
  • the polarity of the data signal of the third frame image is negative polarity, which is the same as the polarity of the data signal of the second frame image.
  • the polarity of the data signal of the fourth frame image is positive polarity, and the polarity of the data signal of the third frame image is opposite to the brightness;
  • the polarity of the data signal of the fifth frame image is positive, which is the same as the polarity of the data signal of the fourth frame image.
  • the polarity of the data signal of the sixth frame image is positive polarity, which is the same as the polarity of the data signal of the fifth frame image.
  • the polarity of the data signal of the seventh frame image is negative polarity, which is opposite to the polarity of the data signal of the sixth frame image, and the brightness is dark;
  • the polarity of the data signal of the eighth frame image is negative polarity, and the polarity of the data signal of the seventh frame image is the same, and the brightness is brighter.
  • the number of relatively bright frames of the left eye image is the same as the number of frames of the right eye image, and the relatively dark frame of the left eye image and the right eye image are relatively dark.
  • the number of frames is also the same. Since the overall brightness is an integral of time, for the user, the image perceived by the left eye is the cumulative effect of the four frames of the left eye image, and the image perceived by the right eye is the cumulative effect of the four frames of the right eye image. Therefore, the problem of the difference in brightness between the left and right eyes in the prior art is well improved.
  • the invention can output the left eye image according to the data signal of the odd frame, and output the right eye image according to the data signal of the even frame.
  • Each frame can output a right eye image or a left eye image in a dot inversion manner or a line inversion manner.
  • different data polarity arrangements within a single frame may be embodiments of the present invention.

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Abstract

一种数据信号极性反转驱动方法及液晶面板画面显示方法，包括：交替地提供左眼影像的数据信号和右眼影像的数据信号，并以八帧影像为一组周期性地切换数据信号的极性，以使每个周期内的左眼影像的数据信号与其前一帧右眼影像的数据信号极性相同的数目，和右眼影像的数据信号与其前一帧左眼影像的数据信号极性相同的数目相等，同时每半个周期内相邻的同一单眼影像的数据信号极性相反。根据此驱动方法工作的液晶显示面板既能够消除快门眼镜式三维影像残留又能够改善左右眼亮度差，能够大幅提高三维画面显示效果。

Description

一种数据信号极性反转驱动方法及液晶面板画面显示方法 技术领域
本发明涉及三维立体显示技术， 尤其涉及一种数据信号极性反转驱动方法及 液晶面板画面显示方法。 背景技术
相较于传统二维平面显示技术， 三维立体显示技术能提供更生动的立体影 像， 因此成为现今显示技术发展的重要方向之一。 目前较为普及常见的三维立体 影像成像技术是快门立体显示眼镜（shutter glasses)技术。 该技术的工作原理 是让三维眼镜的左眼镜片和右眼镜片轮流依序开关 （如图 1 所示）： 当右眼镜片 打开时， 屏幕上同时输出给右眼的影像； 当左眼镜片打开时， 屏幕上同时输出给 左眼的影像， 然后藉由左右眼视角的角度差异， 使得影像观看者在脑中将左右眼 的影像迭合为具有景深及层次感的三维立体影像。 液晶显示装置因其外型轻薄、 低耗电量和无辐射污染等优点已成为当前各个行业乃至家庭娱乐显示的主流配 置。 因此配合快门立体显示眼镜技术的三维立体成像液晶显示器也成为了新的发 展热点。 液晶显示装置的工作原理是通过改变液晶分子的旋转角度来实现不同灰 阶的影像显示。 如果采用直流方式驱动， 液晶材料内的移动离子在电场的影响下 会以同一方向朝着透明导电膜 IT0移动， 这种极化现象会在面板内产生另一电场 而影响液晶分子的转向， 会出现直流残留现象。 为了避免这种直流残留现象影响 画面的显示质量， 通常液晶显示面板采用交流方式进行驱动， 具体的实施方式是 通过改变影像信息数据信号的正负极性， 以使作用于像素单元像素电极上的电压 周期性地变化。 以如图 2所示的单帧影像极性反转驱动方法为例， 假设一个 256 灰阶显示的液晶显示装置， 呈现透光的亮画面 (255 阶的白画面） 记为 L255， 呈 现不透光的暗画面 (0阶的黑画面)记为 L0。 白画面的正负极性驱动电压为 7V和 5V, 黑画面的正负极性驱动电压为 IV和 11V， 共同电极电压为 6V。 那么对于面 板中的某一个像素电极 （也可以是子像素电极）， 其上的电压以及该电压与共同 电极电压的差值会有如下表表一所示的变化情况： 时 Himp 轴 输入
讯号
L255 L0 L255 L0 L255 L255 L0 L255
L R L R L R L R L R L
极性 + - + - + - + - +
电压 7V IV 7V IV 7V IV 7V IV 7V
电压差 IV 5V IV 5V IV 5V IV 5V IV
表 一
从该表可知， 在这种情况下， 像素电极上相对于共同电极的电压差会在 IV 和 5V之间变化。 也即， 在正极性驱动期间内作用于液晶上的电压为 IV； 在负极 性驱动期间内作用于液晶上的电压为 5V。 由于正、 负极性驱动期间内作用于液晶 上的电压相差太大， 且始终为正极性， 不能相互抵消， 因此长时间工作后该点会 有类似直流残留的电荷残留， 从而导致出现三维残影现象。 现有技术中， 有采用 多帧影像极性反转驱动方法， 以消除上述三维残影现象。 如图 3所示， 以其中的 双帧影像极性反转驱动方法为例。 由于每隔两帧影像才会切换数据信号的极性， 因此该方法中， 对于液晶显示面板中的某一个像素电极 （也可以是子像素电极）， 一方面有更充裕的时间进行充电， 从而能够更好地达到预设的电压电位， 另一方 面像素电极上的电压以及该电压与共同电极电压的差值的变化情况如表二所示：
Figure imgf000004_0001
表 二
从该表可知， 在这种情况下， 像素电极上相对于共同电极的电压差会在 IV —-5V—-1V—5V之间反复循环。也即， 在正极性驱动期间内作用于液晶上的电压 为 IV和 -5V; 在负极性驱动期间内作用于液晶上的电压为 -IV和 5V。 正、 负极性 驱动期间内像素电极上相对于共同电极的电压差互相补偿， 因此不会出现残影现 象。 但是在这种情况下又会衍生出另外一个问题， 即左右眼亮度不均的问题。 特 别是对于采用电荷分享技术改善色偏现象的液晶显示面板而言， 这种现象尤为突 出。这是因为，采用电荷分享技术的液晶显示面板的像素单元中设置有分享电容， 以在控制信号的作用下重新分配像素电极主区和次区上的电荷。 该分享电容对电 荷有存储功能， 当分享电容在新一帧影像期间内获得的电荷与前一帧影像期间内 所存储的电荷极性相同时， 因为电荷累积效果， 影像会相对较亮； 反之， 当电容 在新一帧影像期间内获得的电荷与前一帧影像期间内所存储的电荷极性相反时， 因为电荷相互抵消， 影像会相对较暗。 故， 对于输入同样的数据信号 （例如下表 表三中所示的 L255) 而言， 以双帧影像极性反转驱动方式工作的液晶显示面板， 其输出的左眼影像的亮度始终比右眼影像的亮度低。
Figure imgf000005_0001
表
针对上述问题， 本发明的发明人基于长期从事液晶显示面板三维立体成像技 术的研究和设计， 经过多次反复的实验， 提出了一种既能够消除三维影像残留又 能够改善左右眼亮度差的新的数据信号极性反转驱动方法及相应的液晶面板画 面显示方法。 发明内容
基于上述原因， 本发明的目的是提供一种数据信号极性反转驱动方法和液晶 面板画面显示方法。 该方法既能够消除快门眼镜式三维影像残留又能够改善左右 眼亮度差， 具有突出的实用性。
本发明提供一种数据信号极性反转驱动方法， 包括：
交替地提供左眼影像的数据信号和右眼影像的数据信号， 并 以八帧影像为一组周期性地切换数据信号的极性， 以使 每个周期内的左眼影像的数据信号与其前一帧右眼影像的数据信号极性相 同的数目， 和右眼影像的数据信号与其前一帧左眼影像的数据信号极性相同的数 目相等， 同时每半个周期内相邻的同一单眼影像的数据信号极性相反。
按照本发明的实施例， 每一周期中， 可以是第一帧、 第四帧、 第五帧和第六 帧影像的数据信号为正极性， 第二帧、 第三帧、 第七帧和第八帧影像的数据信号 为负极性。
按照本发明的实施例， 每一周期中， 可以是第一帧、 第四帧、 第七帧和第八 帧影像的数据信号为正极性， 第二帧、 第三帧、 第五帧和第六帧影像的数据信号 为负极性。
按照本发明的实施例， 每一周期中， 可以是第一帧、 第二帧、 第五帧和第八 帧影像的数据信号为正极性， 第三帧、 第四帧、 第六帧和第七帧影像的数据信号 为负极性。
按照本发明的实施例， 每一周期中， 可以是第一帧、 第二帧、 第六帧和第七 帧影像的数据信号为负极性， 第三帧、 第四帧、 第五帧和第八帧影像的数据信号 为正极性。
此外， 本发明还提供一种液晶面板画面显示方法， 包括以下步骤： 交替地提供左眼影像的数据信号和右眼影像的数据信号， 并
以八帧影像为一组周期性地切换数据信号的极性， 以使
每个周期内的左眼影像的数据信号与其前一帧右眼影像的数据信号极性相 同的数目， 和右眼影像的数据信号与其前一帧左眼影像的数据信号极性相同的数 目相等， 同时每半个周期内相邻的同一单眼影像的数据信号极性相反；
根据奇数帧的数据信号输出左眼影像；
根据偶数帧的数据信号输出右眼影像。
按照本发明的实施例， 每一周期中， 可以是第一帧、 第四帧、 第五帧和第六 帧影像的数据信号为正极性， 第二帧、 第三帧、 第七帧和第八帧影像的数据信号 为负极性。
按照本发明的实施例， 每一周期中， 可以是第一帧、 第四帧、 第七帧和第八 帧影像的数据信号为正极性， 第二帧、 第三帧、 第五帧和第六帧影像的数据信号 为负极性。 按照本发明的实施例， 每一周期中， 可以是第一帧、 第二帧、 第五帧和第八 帧影像的数据信号为正极性， 第三帧、 第四帧、 第六帧和第七帧影像的数据信号 为负极性。
按照本发明的实施例， 每一周期中， 可以是第一帧、 第二帧、 第六帧和第七 帧影像的数据信号为负极性， 第三帧、 第四帧、 第五帧和第八帧影像的数据信号 为正极性。
具体地， 可以以点反转方式来输出每一帧右眼影像或者左眼影像。
具体地， 可以以行反转方式来输出每一帧右眼影像或者左眼影像。
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
附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与本发明 的实施例一起用于解释本发明， 并不构成对本发明的限制。 在附图中：
图 1是现有的快门式眼镜的左眼镜片和右眼镜片轮流依序开关的示意图； 图 2是现有的液晶显示面板的单帧影像极性反转示意图；
图 3是现有的液晶显示面板的双帧影像极性反转示意图；
图 4是本发明的液晶显示面板的数据信号的极性反转示意图。 具体实 式
为实现上述目的， 本发明采用与现有技术不同的数据信号驱动方法， 即不定 期地改变液晶显示面板的数据信号的极性。 该驱动方法包括以下步骤：
交替地提供左眼影像的数据信号和右眼影像的数据信号， 并
以八帧影像为一组周期性地切换数据信号的极性， 以使
每个周期内的左眼影像的数据信号与其前一帧右眼影像的数据信号极性相 同的数目， 和右眼影像的数据信号与其前一帧左眼影像的数据信号极性相同的数 目相等， 同时每半个周期内相邻的同一单眼影像的数据信号极性相反。
由现有技术可知， 配合快门立体显示眼镜工作的液晶显示器需要交替地输出 左眼影像和右眼影像， 而每一帧单眼影像期间内， 数据信号的极性保持一定正极 性或者负极性不变。 根据本发明提出的驱动方法， 在某个周期内， 液晶显示面板 的数据信号的极性切换情况以及极性状态可以是如图 4 (也即下表表四） 所示的 四种情况中的一种：
Figure imgf000008_0001
表 四
上述四种情况可以看作是 "+--+++--"极性反转方式不间断地反复实施， 只 是必须满足每半个周期内， 相邻的两个左眼影像的数据信号的极性相反， 以及相 邻的两个右眼影像的数据信号的极性相反的条件。 因此下面将结合具体实施例， 对 "+__+++ " 的极性反转方式的工作原理进行详细说明， 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够充分理解并据以实 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。
仍以背景技术中 256灰阶显示的液晶显示装置为例进行说明。 呈现透光的亮 画面（255阶的白画面） 记为 L255， 呈现不透光的暗画面 (0阶的黑画面)记为 L0 白画面的正负极性驱动电压为 7V和 5V，黑画面的正负极性驱动电压为 IV和 11V 共同电极电压为 6V。在连续的两个周期内， 液晶显示面板按照下表表五所示切换 数据信号的极性：
Figure imgf000008_0002
表 五 前半个周期内：
第一帧影像的数据信号的电压为白画面的正极性驱动电压 7V;
第二帧影像的数据信号的电压为黑画面的负极性驱动电压 11V;
第三帧影像的数据信号的电压为白画面的负极性驱动电压 5V;
第四帧影像的数据信号的电压为黑画面的正极性驱动电压 IV；
后半个周期内：
第一帧影像的数据信号的电压为白画面的正极性驱动电压 7V;
第二帧影像的数据信号的电压为黑画面的正极性驱动电压 IV；
第三帧影像的数据信号的电压为白画面的负极性驱动电压 5V;
第四帧影像的数据信号的电压为黑画面的负极性驱动电压 11V;
……依次类推。
如前所述， 在这种情况下， 像素电极相对于共同电极的电压差会在 1V—5V →_1V→_5V→1V→_5V→_1V→5V的方式进行循环变化。从中可以看出， 在正极性 驱动期间内施加于液晶上的电压为 IV和 -5V; 在负极性驱动期间内施加于液晶上 的电压为 -IV和 5V。 正、 负极性驱动期间内像素电极上相对于共同电极的电压差 互相补偿。 因此本发明与背景技术所介绍的多帧影像极性反转驱动方法一样， 也 不会出现三维残影现象， 可以大幅度地提升三维立体液晶显示装置的画面显示品 质。
另一方面， 由前述可知， 由于分享电容的电荷存储功能， 当新一帧影像数据 信号的极性与前一帧影像数据信号的极性不同时， 电荷彼此抵消， 影像因此会相 对较暗， 反之， 当新一帧影像数据信号的极性与前一帧影像数据信号的极性相同 时， 电荷相互累积， 影像会相对较亮。 因此根据上述数据信号的极性切换方式， 液晶显示面板输出影像的亮度如下表表六所示:
时
间 Time 轴 输入
讯号 极性 + - - + + + - + - + + + - - 壳度 暗 暗 5¾ 暗 冗 冗 暗 5¾ 暗 暗 暗 冗 5=c 暗 第一帧影像的数据信号的极性为正极性， 与上一个周期第八帧影像的数据信 号的极性 （负极性） 相反， 亮度较暗；
第二帧影像的数据信号的极性为负极性， 与第一帧影像的数据信号的极性相 反， 亮度较暗；
第三帧影像的数据信号的极性为负极性， 与第二帧影像的数据信号的极性相 同
第四帧影像的数据信号的极性为正极性， 与第三帧影像的数据信号的极性相 反 亮度较暗；
第五帧影像的数据信号的极性为正极性， 与第四帧影像的数据信号的极性相 同
第六帧影像的数据信号的极性为正极性， 与第五帧影像的数据信号的极性相 同
第七帧影像的数据信号的极性为负极性， 与第六帧影像的数据信号的极性相 反， 亮度较暗；
第八帧影像的数据信号的极性为负极性， 与第七帧影像的数据信号的极性相 同， 亮度较亮。
从上可以看出， 在一个周期内， 左眼影像相对较亮的帧数与右眼影像相对较 亮的帧数一致， 左眼影像相对较暗的帧数与右眼影像相对较暗的帧数也一致。 由 于总体亮度是对时间的积分， 因此对使用者而言， 左眼感受到的影像是这四帧左 眼影像的累积作用， 右眼感受到的影像是这四帧右眼影像的累积作用， 因此很好 地改善了现有技术中的左右眼亮度差的问题。
本发明可以依据奇数帧的数据信号输出左眼影像， 依据偶数帧的数据信号输 出右眼影像。 而每一帧可以以点反转方式或者行反转方式来输出右眼影像或者左 眼影像。 然而， 单一帧内的不同数据极性排列皆可以为本发明的实施例。
虽然本发明所揭露的实施方式如上， 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， 在不脱离本发明所揭露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

权利要求书
1、 一种数据信号极性反转驱动方法， 包括以下步骤：
交替地提供左眼影像的数据信号和右眼影像的数据信号， 并
以八帧影像为一组周期性地切换数据信号的极性， 以使
每个周期内的左眼影像的数据信号与其前一帧右眼影像的数据信号极性相 同的数目， 和右眼影像的数据信号与其前一帧左眼影像的数据信号极性相同的数 目相等， 同时每半个周期内相邻的同一单眼影像的数据信号极性相反。
2、 如权利要求 1所述的数据信号极性反转驱动方法， 其中：
每一周期中， 第一帧、 第四帧、 第五帧和第六帧影像的数据信号为正极性， 第二帧、 第三帧、 第七帧和第八帧影像的数据信号为负极性。
3、 如权利要求 1所述的数据信号极性反转驱动方法， 其中：
每一周期中， 第一帧、 第四帧、 第七帧和第八帧影像的数据信号为正极性， 第二帧、 第三帧、 第五帧和第六帧影像的数据信号为负极性。
4、 如权利要求 1所述的数据信号极性反转驱动方法， 其中：
每一周期中， 第一帧、 第二帧、 第五帧和第八帧影像的数据信号为正极性， 第三帧、 第四帧、 第六帧和第七帧影像的数据信号为负极性。
5、 如权利要求 1所述的数据信号极性反转驱动方法， 其中：
每一周期中， 第一帧、 第二帧、 第六帧和第七帧影像的数据信号为负极性， 第三帧、 第四帧、 第五帧和第八帧影像的数据信号为正极性。
6、 一种液晶面板画面显示方法， 包括以下步骤：
交替地提供左眼影像的数据信号和右眼影像的数据信号， 并
以八帧影像为一组周期性地切换数据信号的极性， 以使
每个周期内的左眼影像的数据信号与其前一帧右眼影像的数据信号极性相 同的数目， 和右眼影像的数据信号与其前一帧左眼影像的数据信号极性相同的数 目相等， 同时每半个周期内相邻的同一单眼影像的数据信号极性相反；
根据奇数帧的数据信号输出左眼影像；
根据偶数帧的数据信号输出右眼影像。
7、 如权利要求 6所述的液晶面板画面显示方法， 其中：
每一周期中， 第一帧、 第四帧、 第五帧和第六帧影像的数据信号为正极性， 第二帧、 第三帧、 第七帧和第八帧影像的数据信号为负极性。
8、 如权利要求 6所述的液晶面板画面显示方法， 其中： 每一周期中， 第一帧、 第四帧、 第七帧和第八帧影像的数据信号为正极性， 第二帧、 第三帧、 第五帧和第六帧影像的数据信号为负极性。
9、 如权利要求 6所述的液晶面板画面显示方法， 其中：
每一周期中， 第一帧、 第二帧、 第五帧和第八帧影像的数据信号为正极性， 第三帧、 第四帧、 第六帧和第七帧影像的数据信号为负极性。
10、 如权利要求 6所述的液晶面板画面显示方法， 其中：
每一周期中， 第一帧、 第二帧、 第六帧和第七帧影像的数据信号为负极性， 第三帧、 第四帧、 第五帧和第八帧影像的数据信号为正极性。
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