WO2018040485A1 - 一种lcd大视角显示的改善方法及装置 - Google Patents

一种lcd大视角显示的改善方法及装置 Download PDF

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WO2018040485A1
WO2018040485A1 PCT/CN2017/071484 CN2017071484W WO2018040485A1 WO 2018040485 A1 WO2018040485 A1 WO 2018040485A1 CN 2017071484 W CN2017071484 W CN 2017071484W WO 2018040485 A1 WO2018040485 A1 WO 2018040485A1
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preset
display
voltage
viewing angle
preset condition
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陈黎暄
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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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    • 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
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
    • G09G3/3637—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with intermediate tones displayed by domain size control
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • 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
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • 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
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an improved method and apparatus for LCD large-view display.
  • flat panel displays have replaced bulky CRT displays in people's daily lives.
  • commonly used flat panel displays include liquid crystal display LCDs and organic light emitting diode OLED displays.
  • the flat panel display has the characteristics of small size, low power consumption, no radiation, and the like, and has occupied a dominant position in the current flat panel display market.
  • the current mainstream flat panel display is still LCD.
  • LCD display type classification it can be divided into: TN type, VA type, IPS type and FFS type.
  • VA, IPS and FFS types are superior in terms of viewing angle.
  • TN type, narrow viewing angle TN type display is mainly used for mobile office products such as NB.
  • the viewing angle is fixed single, which cannot meet the needs of different application places and viewing preferences. Therefore, it is necessary to provide a display device capable of switching the viewing angle.
  • an image of a large viewing angle is liable to cause a large viewing angle light leakage and a wash out phenomenon due to uneven cell gap.
  • the industry has proposed many solutions to improve the display of this large viewing angle, such as multi-domain, 1G1D coupling and 2D1G technology.
  • the 2D1G technology it is possible to provide signals to the Main pixel and the Sub pixel, respectively, thereby bringing about the possibility of improving the display of a large viewing angle by using an unused gamma curve.
  • the application number is CN201510344787.8, which describes an improvement method for LCD large-view display, which combines the LCS conversion of time and space signal processing to achieve a good large viewing angle improvement effect under 4domain, but because its driving frequency is not High enough (120--240Hz), the LCD response is not fast enough, the grayscale difference of the two-frame switching is too bright, and so on, sometimes Flicker flickering is observed on the screen.
  • the maximum H/L is The grayscale difference position is near the gray level of 150 to 170 and the maximum difference position of the brightness is slightly higher than the gray level of the position of the maximum gray level difference.
  • the present application proposes an improved method and apparatus for LCD large viewing angle display.
  • An improvement method for LCD large-view display includes the following steps, as shown in FIG. 1:
  • the display panel when the input RGB grayscale voltage meets a given preset condition, the display panel performs two-frame H/L switching display, and the predetermined preset condition is: 80%*R specification ⁇ R ⁇ 120%*R specification 80%*G specification ⁇ G ⁇ 120% * G specification or 80% * B specification ⁇ B ⁇ 120% * B specification , which constitutes the first preset mode,
  • R represents a preset standard voltage threshold gray level red
  • G represents a preset standard voltage threshold gray green
  • B represents specifications of the blue grayscale preset threshold voltage
  • R represents the red gradation voltage input
  • G Indicates the input green grayscale voltage
  • B represents the input blue grayscale voltage
  • the display panel when the input RGB grayscale voltage does not meet the preset condition, the display panel performs normal display of two frames, and the predetermined preset condition is: 80%*R specification ⁇ R ⁇ 120% * R specification , 80% * G
  • the specification ⁇ G ⁇ 120% * G specification or 80% * B specification ⁇ B ⁇ 120% * B specification constitutes the first preset mode
  • the given preset condition is:
  • the given preset condition is:
  • the given preset condition is:
  • 80%*G specification ⁇ G ⁇ 120%*G specification and 80%*B specification ⁇ B ⁇ 120%*B specification constitutes the fourth preset mode.
  • the given preset condition is:
  • 80%*R specification ⁇ R ⁇ 120%*R specification and 80%*G specification ⁇ G ⁇ 120%*G specification and 80%*B specification ⁇ B ⁇ 120%*B specification constitutes the fifth preset mode.
  • An improvement device for LCD large-view display comprising a voltage detecting unit and a switching display judging unit;
  • a voltage detecting unit that detects an input RGB gray scale voltage
  • the display panel performs two-frame H/L switching display, when the input RGB grayscale voltage is not When the preset conditions are met, the display panel performs normal display for two frames.
  • R represents a preset standard voltage threshold gray level red
  • G represents a preset standard voltage threshold gray green
  • B represents specifications of the blue grayscale preset threshold voltage
  • R represents the red gradation voltage input
  • G Indicates the input green grayscale voltage
  • B represents the input blue grayscale voltage.
  • the preset conditions given in the improvement device are:
  • the preset conditions given in the improvement device are:
  • the preset conditions given in the improvement device are:
  • 80%*G specification ⁇ G ⁇ 120%*G specification and 80%*B specification ⁇ B ⁇ 120%*B specification constitutes the fourth preset mode.
  • the preset conditions given in the improvement device are:
  • 80%*R specification ⁇ R ⁇ 120%*R specification and 80%*G specification ⁇ G ⁇ 120%*G specification and 80%*B specification ⁇ B ⁇ 120%*B specification constitutes the fifth preset mode.
  • An improved method or method for LCD large viewing angle display can be applied in blue laser communication device design, or in R/G/B single or combined H/L conversion design, the method and device can Effectively avoiding the loss of resolution caused by the spatial H/L conversion technology, and also improving the flicker defect caused by the time H/L conversion.
  • the invention provides an improvement method for LCD large-view display.
  • the method firstly detects an input RGB gray-scale voltage.
  • the display panel performs two frames H. /L switch display, when the input RGB grayscale voltage does not meet the preset condition, the display panel performs normal display of two frames, the preset condition is: 80%*R specification ⁇ R ⁇ 120% * R specification , 80 %*G specification ⁇ G ⁇ 120% * G specification or 80% * B specification ⁇ B ⁇ 120% * B specification .
  • the invention has the beneficial effects that for a display device with a driving frequency of 120 Hz or higher, in time/space mixing or H/L conversion in time, by distinguishing the input signal of each sub-pixel, it is possible to effectively identify the transformation that needs to be transformed. Pattern and Pattern that does not need to be transformed, improve the part of the display does not need to improve the flicker phenomenon of the picture with large viewing angle.
  • the present invention can be applied to the VA type LCD, and the improvement of the time-changing LCS can be achieved to improve the dominant role of the big picture. Purpose, while reducing the loss of penetration.
  • FIG. 1 is a flow chart of a method for improving a large viewing angle display of an LCD according to the present invention
  • 2 is a sub-pixel signal design manner of frame switching; wherein “1” represents one frame signal, “2” represents another frame signal, H represents a high gray level, and L represents a low gray level;
  • reference numeral A denotes a brightness corresponding to a high gray level
  • reference numeral B denotes a brightness corresponding to a low gray level
  • FIG. 4 to FIG. 10 are flowcharts showing an improvement method of a large viewing angle display of an LCD according to the invention.
  • sub-pixels of a predetermined area of the liquid crystal panel are driven in cycles of consecutive M frames, and the polarity of the sub-pixel driving voltages of consecutive first predetermined number of frames in the M frames is the same, M
  • the polarity of the sub-pixel driving voltage of each of the frames other than the first predetermined number of frames is opposite to the polarity of the sub-pixel driving voltage of the adjacent frame.
  • the invention describes an improved method for LCD large-view display, which combines the LCS transform of time and space signal processing to achieve a good large viewing angle improvement effect under 4 domains, but because its driving frequency is not high enough (120-- 240Hz), the liquid crystal response is not fast enough, the grayscale difference of the two-frame switching is too bright, and so on, sometimes Flicker flickering is observed on the screen.
  • the display effect of a large viewing angle can be improved by means of time signal conversion, that is, at a higher frequency, a BL (GL/RL) signal is displayed in one frame, and BH is displayed in one frame. (RH/GH) signal.
  • the maximum H/L is The grayscale difference position is near the 150-170 grayscale, and the maximum luminance difference position is slightly higher than the grayscale of the maximum grayscale difference position.
  • the front and side views of the image pattern which obviously cause a large subjective difference, list a series of matching values of their gray scale R/G/B.
  • 9 chromaticity in the national standard can be a view pattern and a skin pattern, wherein 9 chromaticity can be seen in Table 1, as well as other R/G defined by the designer separately. /B with the situation.
  • the method provided by the invention can be applied to the design of blue laser communication system, and can also be applied to the design of R/G/B single or combined H/L conversion.
  • the method can also effectively avoid the loss of resolution caused by the spatial H/L conversion technology, and can also improve the flicker defect caused by the time H/L conversion.
  • the display panel when the input RGB grayscale voltage meets any of the preset conditions, the display panel performs two-frame H/L switching display, and the preset condition is:
  • the R specification represents a preset red grayscale voltage threshold
  • the preset conditions are:
  • the R specification represents a preset red grayscale voltage threshold.
  • the display panel when the input RGB grayscale voltage meets any of the preset conditions, the display panel performs two-frame H/L switching display, and the preset condition is:
  • the G specification represents a preset green grayscale voltage threshold
  • the G specification represents a preset green grayscale voltage threshold.
  • the B specification represents a preset blue grayscale voltage threshold
  • the B specification indicates a preset blue grayscale voltage threshold.
  • the R specification represents a preset red grayscale voltage threshold
  • the G specification represents a preset green grayscale voltage threshold
  • the R specification represents a preset red grayscale voltage threshold
  • the G specification represents a preset green grayscale voltage threshold
  • the R specification represents a preset red grayscale voltage threshold
  • the B specification represents a preset blue grayscale voltage threshold
  • the preset conditions are:
  • the R specification represents a preset red grayscale voltage threshold
  • the B specification represents a preset blue grayscale voltage threshold.
  • the G specification represents a preset green grayscale voltage threshold
  • the B specification represents a preset blue grayscale voltage threshold
  • the G specification represents a preset green grayscale voltage threshold
  • the B specification represents a preset blue grayscale voltage threshold
  • R represents a preset standard voltage threshold gray level red
  • G represents a preset standard voltage threshold gray green
  • B represents specifications of the blue grayscale preset voltage threshold
  • R represents a preset standard voltage threshold gray level red
  • G represents a preset standard voltage threshold gray green
  • B represents specifications of the blue grayscale preset voltage threshold.

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  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种LCD大视角显示的改善方法及装置，该方法包括：对输入的RGB灰阶电压进行检测，当输入的RGB灰阶电压符合给定的预设条件时，显示面板进行两帧H/L切换显示，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，其中预设条件为：80％*R 规格≤R≤120％*R 规格、80％*G 规格≤G≤120％*G 规格或80％*B 规格≤B≤120％*B 规格，其中，R 规格表示预设的红色灰阶电压阈值，G 规格表示预设的绿色灰阶电压阈值，B 规格表示预设的蓝色灰阶电压阈值，R表示输入的红色灰阶电压，G表示输入的绿色灰阶电压，B表示输入的蓝色灰阶电压。

Description

一种LCD大视角显示的改善方法及装置
相关技术的交叉引用
本申请要求享有2016年8月29日提交的名称为“一种LCD大视角显示的改善方法及装置”的中国专利申请为CN201610752869.0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，尤其涉及一种LCD大视角显示的改善方法及装置。
背景技术
近年来，显示技术得到快速的发展，平板显示器已取代笨重的CRT显示器日益深入人们的日常生活中。目前，常用的平板显示器包括液晶显示器LCD和有机发光二极管OLED显示器。上述平板显示器具有体积小、功耗低、无辐射等特点，在当前的平板显示器市场中占据了主导地位。
由于OLED技术尚不成熟，目前主流平板显示仍是LCD，根据LCD显示类型分类，可分为：TN型、VA型、IPS型和FFS型，就视角而言VA、IPS和FFS型较优于TN型，窄视角的TN型显示屏主要用于NB等移动办公产品。在现有的显示器产品中，其视角固定单一，无法满足不同应用场所和观看喜好的需求，因此，有必要提供一种可切换视角的显示装置。
在MVA LCD显示设备中，大视角的图像容易因为间隙(cell gap)不均产生大视角漏光和破损(wash out)现象。业界提出了很多改善此大视角显示效果的方案，譬如multi-domain，1G1D coupling以及2D1G技术。在2D1G的技术中，可以对Main pixel和Sub pixel分别提供信号，由此带来了通过采用不用的gamma curve来改善大视角显示效果的可能。
但是2D1G的技术，会带来穿透率的下降问题，使得大视角的效果和穿透率无法兼顾。
例如：申请号为CN201510344787.8描述了一种LCD大视角显示的改善方法，将时间和空间的信号处理的LCS变换结合起来，在4domain下达到良好的大视角改善效果，但是由于其驱动频率不足够高(120--240Hz)，液晶响应没有足够快，两帧切换的灰阶差异亮度太大等原因，有时会观察到画面存在Flicker闪烁现象。
对于时间空间混合的4domain改善大视角色偏设计，有两个无法绕过的问题即:
(1)空间分辨率下降导致画面细节出现分辨率损失的问题；
(2)时间分辨率下降导致明暗画面切换的闪烁问题；
在实际的情形中，如果同一子像素前后两帧的亮度差异过大，会增加闪烁现象发生之可能，考虑到H/L信号的一般分配形式一般大致如图3曲线的轮廓，H/L最大灰阶差异位置在150到170灰阶附近而亮度最大差异位置会比最大灰阶差位置的灰阶略高。
因此，为改善现有在MVA LCD显示设备中大视角的效果和穿透率无法兼顾的问题，特提出本发明技术方案。
发明内容
针对上述现有技术中的问题，本申请提出了一种LCD大视角显示的改善方法及装置。
一种LCD大视角显示的改善方法，包括以下步骤，具体参见图1：
S100，输入RGB灰阶电压；
S101，通过信号检测判别模块进行判断；
S102，当输入的RGB灰阶电压符合给定的预设条件时，显示面板进行两帧H/L切换显示，给定的预设条件为：80％*R规格≤R≤120％*R规格、80％*G规格≤G≤120％*G规格或80％*B规格≤B≤120％*B规格中的任意的一项，构成第一种预设方式，
其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值，B规 格表示预设的蓝色灰阶电压阈值，R表示输入的红色灰阶电压，G表示输入的绿色灰阶电压，B表示输入的蓝色灰阶电压；
S103，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，给定的预设条件为：80％*R规格≤R≤120％*R规格、80％*G规格≤G≤120％*G规格或80％*B规格≤B≤120％*B规格中的任意的一项，构成第一种预设方式；
S104，RGB灰阶电压输出。
进一步限定，所述给定的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格，构成第二种预设方式。
进一步限定，所述给定的预设条件为：
80％*R规格≤R≤120％*R规格且80％*B规格≤B≤120％*B规格，构成第三种预设方式。
进一步限定，所述给定的预设条件为：
80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第四种预设方式。
进一步限定，所述给定的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第五种预设方式。
一种LCD大视角显示的改善装置，该装置包括电压检测单元和切换显示判断单元；
电压检测单元，对输入的RGB灰阶电压进行检测；
切换显示判断单元，对输入的RGB灰阶电压进行判断，当输入的RGB灰阶电压符合给定的预设条件时，显示面板进行两帧H/L切换显示，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，
给定的预设条件为：80％*R规格≤R≤120％*R规格、80％*G规格≤G≤120％*G规格或80％*B规 格≤B≤120％*B规格中的任意的一项，构成第一种预设方式；
其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值，B规 格表示预设的蓝色灰阶电压阈值，R表示输入的红色灰阶电压，G表示输入的绿色灰阶电压，B表示输入的蓝色灰阶电压。
进一步限定，所述改善装置中给定的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格，构成第二种预设方式。
进一步限定，所述改善装置中给定的预设条件为：
80％*R规格≤R≤120％*R规格且80％*B规格≤B≤120％*B规格，构成第三种预设方式。
进一步限定，所述改善装置中给定的预设条件为：
80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第四种预设方式。
进一步限定，所述改善装置中给定的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第五种预设方式。
一种LCD大视角显示的改善方法或方法可在蓝色的激光通信装置设计中的应用，或在R/G/B单一或组合的H/L变换的设计中的应用，本方法及装置可以有效规避空间H/L变换技术带来的分辨率的损失，亦可改善时间H/L变换产生的闪烁不良。
本发明提出了一种LCD大视角显示的改善方法，本方法首先，对输入的RGB灰阶电压进行检测，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，所述的预设条件为：80％*R规格≤R≤120％*R规格、80％*G规格≤G≤120％*G规格或80％*B规格≤B≤120％*B规格。
本发明带来的有益效果是，对于120HZ或者更高驱动频率的显示设备，在时间/空间混合或者时间上的H/L变换时，通过区分每个子像素的输入信号，可以有效甄别需要变换的Pattern以及不需要变换的Pattern，改善显示时部分不需要改善大视角的画面出现的闪烁现象，本发明可应用VA型LCD上，通过对时间变换的LCS的改良，来达到大视角色偏的改善目的，同时使穿透率损失减少。
上述技术特征可以各种适合的方式组合或由等效的技术特征来替代，只要能够达到本发明的目的。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1为本发明所述的一种LCD大视角显示的改善方法的流程图；
图2为帧切换的子像素信号设计方式；其中，“1”表示一帧信号，“2”表示另一帧信号，H表示高灰阶，L表示低灰阶；
图3为H/L信号的一般分配形式；附图标记A表示高灰阶所对应的亮度，附图标记B表示低灰阶所对应的亮度；
图4至图10均为发明所述的一种LCD大视角显示的改善方法的流程图。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例。
具体实施方式
现有技术中公开对于液晶面板的预定区域的子像素，以连续的M个帧为周期进行驱动，M个帧中的连续的第一预定数量的帧的子像素驱动电压的极性相同，M个帧中除第一预定数量的帧之外的每个帧的子像素驱动电压的极性与相邻帧的子像素驱动电压的极性相反。
本发明描述了一种LCD大视角显示的改善方法，将时间和空间的信号处理的LCS变换结合起来，在4domain下达到良好的大视角改善效果，但是由于其驱动频率不足够高(120--240Hz)，液晶响应没有足够快，两帧切换的灰阶差异亮度太大等原因，有时会观察到画面存在Flicker闪烁现象。由此，通过现有技术，我们已知可以通过时间信号变换的方式来改善大视角的显示效果，即在更高的频率下，一帧显示BL(GL/RL)的信号，一帧显示BH(RH/GH)的信号。
但是，对于时间空间混合的4domain改善大视角色偏设计，有两个无法绕过的问题即：
(1)空间分辨率下降导致画面细节出现分辨率损失的问题；
(2)时间分辨率下降导致明暗画面切换的闪烁问题；具体参见图2。
在实际的情形中，如果同一子像素前后两帧的亮度差异过大，会增加闪烁现象发生之可能，考虑到H/L信号的一般分配形式一般大致如图3曲线的轮廓，H/L最大灰阶差异位置在150—170灰阶附近，而亮度最大差异位置会比最大灰阶差位置的灰阶略高。
为了规避一些亮度差异较大时可能引起的闪烁现象，我们考虑对输入的图像进行区分，本发明提出如下方案：
首先，提出正视和侧视明显会引起较大主观差异感受的图像pattern(模式)，列出它们的灰阶R/G/B的一系列搭配值。诸如国标中的9个色度可视角pattern(模式)以及肤色pattern(模式)，其中，9个色度可视角pattern(模式)具体参见表1，同时还包括设计者单独定义的其他R/G/B搭配情况。
表1
Figure PCTCN2017071484-appb-000001
因此，针对上述Pattern，存在一系列规格的R/G/B灰阶搭配，定义当输入图像信号
80％*R规格≤R≤120％*R规格   (1)，
80％*G规格≤G≤120％*G规格   (2)，
80％*B规格≤B≤120％*B规格    (3)，
式(1)、(2)、(3)的任何一个以及任何两个或三式均成立时，定义H/L变换的逻辑为True，即：进行显示面板进行两帧H/L切换显示,否则为False，即：显示面板进行两帧正常显示。
对于120HZ或者更高驱动频率的显示设备，在时间/空间混合或者时间上的H/L变换时，通过区分每个子像素的输入信号，可以有效甄别需要变换的Pattern以及不需要变换的Pattern，改善显示时部分不需要改善大视角的画面出现的闪烁现象。
本发明提供的方法可以应用于蓝色的激光通信系统设计中，亦可应用于R/G/B单一或组合的H/L变换的设计中。
本方法还可以有效规避空间H/L变换技术带来的分辨率的损失，亦可改善时间H/L变换产生的闪烁不良。
下面将结合附图对本发明作进一步说明。
图4中，介绍了其中一种LCD大视角显示的改善方法，包括如下步骤：
S400，对输入的RGB灰阶电压进行检测，
S401，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，所述的预设条件为：
80％*R规格≤R≤120％*R规格
其中，R规格表示预设的红色灰阶电压阈值；
S402，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示；
所述的预设条件为：
80％*R规格≤R≤120％*R规格
其中，R规格表示预设的红色灰阶电压阈值。
图5中，介绍了其中一种LCD大视角显示的改善方法，包括如下步骤：
S500，对输入的RGB灰阶电压进行检测，
S501，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，所述的预设条件为：
80％*G规格≤G≤120％*G规格
其中，G规格表示预设的绿色灰阶电压阈值；
S502，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，所述的预设条件为：
80％*G规格≤G≤120％*G规格
其中，G规格表示预设的绿色灰阶电压阈值。
图6中，介绍了其中一种LCD大视角显示的改善方法，包括如下步骤：
S601，对输入的RGB灰阶电压进行检测，
S602，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，所述的预设条件为：
80％*B规格≤B≤120％*B规格
其中，B规格表示预设的蓝色灰阶电压阈值；
S603，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，所述的预设条件为：
80％*B规格≤B≤120％*B规格
其中，B规格表示预设的蓝色灰阶电压阈值。
图7中，介绍了其中一种LCD大视角显示的改善方法，包括如下步骤：
S700，对输入的RGB灰阶电压进行检测，
S701，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，所述的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格，
其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值；
S702，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，所述的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格，
其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值。
图8中，介绍了其中一种LCD大视角显示的改善方法，包括如下步骤：
S800，对输入的RGB灰阶电压进行检测，
S801，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，所述的预设条件为：
80％*R规格≤R≤120％*R规格且80％*B规格≤B≤120％*B规格，
其中，R规格表示预设的红色灰阶电压阈值，B规格表示预设的蓝色灰阶电压阈值；
S802，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，
所述的预设条件为：
80％*R规格≤R≤120％*R规格且80％*B规格≤B≤120％*B规格，
其中，R规格表示预设的红色灰阶电压阈值，B规格表示预设的蓝色灰阶电压阈值。
图9中，介绍了其中一种LCD大视角显示的改善方法，包括如下步骤：
S900，对输入的RGB灰阶电压进行检测，
S901，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，所述的预设条件为：
80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，
其中，G规格表示预设的绿色灰阶电压阈值，B规格表示预设的蓝色灰阶电压阈值；
S902，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，所述的预设条件为：
80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，
其中，G规格表示预设的绿色灰阶电压阈值，B规格表示预设的蓝色灰阶电压阈值。
图10中，介绍了其中一种LCD大视角显示的改善方法，包括如下步骤：
S1000，对输入的RGB灰阶电压进行检测，
S1001，当输入的RGB灰阶电压符合任一项预设条件时，显示面板进行两帧H/L切换显示，所述的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，
其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值，B规 格表示预设的蓝色灰阶电压阈值；
S1002，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，所述的预设条件为：
80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，
其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值，B规 格表示预设的蓝色灰阶电压阈值。
虽然在本文中参照了特定的实施方式来描述本发明，但是应该理解的是，这些实施例仅仅是本发明的原理和应用的示例。因此应该理解的是，可以对示例性的实施例进行许多修改，并且可以设计出其他的布置，只要不偏离所附权利要求所限定的本发明的精神和范围。应该理解的是，可以通过不同于原始权利要求所描述的方式来结合不同的从属权利要求和本文中所述的特征。还可以理解的是，结合单独实施例所描述的特征可以使用在其他所述实施例中。

Claims (10)

  1. 一种LCD大视角显示的改善方法，包括以下步骤：
    对输入的RGB灰阶电压进行检测，当输入的RGB灰阶电压符合给定的预设条件时，显示面板进行两帧H/L切换显示，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，
    给定的预设条件为：80％*R规格≤R≤120％*R规格、80％*G规格≤G≤120％*G规格或80％*B规 格≤B≤120％*B规格中的任意的一项，构成第一种预设方式；
    其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值，B规 格表示预设的蓝色灰阶电压阈值，R表示输入的红色灰阶电压，G表示输入的绿色灰阶电压，B表示输入的蓝色灰阶电压。
  2. 根据权利要求1所述的一种LCD大视角显示的改善方法，其中，所述给定的预设条件为：
    80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格，构成第二种预设方式。
  3. 根据权利要求1所述的一种LCD大视角显示的改善方法，其中，所述给定的预设条件为：
    80％*R规格≤R≤120％*R规格且80％*B规格≤B≤120％*B规格，构成第三种预设方式。
  4. 根据权利要求1所述的一种LCD大视角显示的改善方法，其中，所述给定的预设条件为：
    80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第四种预设方式。
  5. 根据权利要求1所述的一种LCD大视角显示的改善方法，其中，所述给定的预设条件为：
    80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第五种预设方式。
  6. 一种LCD大视角显示的改善装置，该装置包括电压检测单元和切换显示判断单元；
    电压检测单元，对输入的RGB灰阶电压进行检测；
    切换显示判断单元，对输入的RGB灰阶电压进行判断，当输入的RGB灰阶电压符合给定的预设条件时，显示面板进行两帧H/L切换显示，当输入的RGB灰阶电压不符合预设条件时，显示面板进行两帧正常显示，
    给定的预设条件为：80％*R规格≤R≤120％*R规格、80％*G规格≤G≤120％*G规格或80％*B规 格≤B≤120％*B规格中的任意的一项，构成第一种预设方式；
    其中，R规格表示预设的红色灰阶电压阈值，G规格表示预设的绿色灰阶电压阈值，B规 格表示预设的蓝色灰阶电压阈值，R表示输入的红色灰阶电压，G表示输入的绿色灰阶电压，B表示输入的蓝色灰阶电压。
  7. 根据权利要求6所述的一种LCD大视角显示的改善装置，其中，所述给定的预设条件为：
    80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格，构成第二种预设方式。
  8. 根据权利要求6所述的一种LCD大视角显示的改善装置，其中，所述给定的预设条件为：
    80％*R规格≤R≤120％*R规格且80％*B规格≤B≤120％*B规格，构成第三种预设方式。
  9. 根据权利要求6所述的一种LCD大视角显示的改善装置，其中，所述给定的预设条件为：
    80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第四种预设方式。
  10. 根据权利要求6所述的一种LCD大视角显示的改善装置，其中，所述给定的预设条件为：
    80％*R规格≤R≤120％*R规格且80％*G规格≤G≤120％*G规格且80％*B规格≤B≤120％*B规格，构成第五种预设方式。
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030008044A (ko) * 2001-07-12 2003-01-24 삼성전자 주식회사 광시야각 모드용 액정 표시 장치와 이의 구동 방법
US20030184570A1 (en) * 2002-03-29 2003-10-02 Chi Mei Optoelectronics Corporation Driving device and its driving method of liquid crystal display
CN1727946A (zh) * 2004-07-28 2006-02-01 夏普株式会社 液晶显示器及其驱动方法
CN101894520A (zh) * 2010-08-06 2010-11-24 友达光电股份有限公司 平面显示器与平面显示器的显示数据控制方法
CN102427517A (zh) * 2011-09-30 2012-04-25 青岛海信电器股份有限公司 动态对比度的调整方法及装置、液晶电视机
CN105096852A (zh) * 2015-06-19 2015-11-25 深圳市华星光电技术有限公司 用于液晶面板的极性反转的驱动方法
CN106205533A (zh) * 2016-08-29 2016-12-07 深圳市华星光电技术有限公司 一种lcd大视角显示的改善方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100870487B1 (ko) * 2001-07-04 2008-11-26 엘지디스플레이 주식회사 광시야각을 위한 액정디스플레이의 구동 방법 및 장치
US20140118423A1 (en) * 2011-06-27 2014-05-01 Sharp Kabushiki Kaisha Liquid crystal display apparatus
MY175398A (en) * 2012-09-13 2020-06-24 Sharp Kk Liquid crystal display device
KR20150070683A (ko) * 2013-12-17 2015-06-25 삼성디스플레이 주식회사 액정 표시 장치 및 이의 구동 방법
CN104485077B (zh) * 2014-12-16 2017-04-26 深圳市华星光电技术有限公司 一种液晶显示面板及其驱动方法
KR20160085387A (ko) * 2015-01-07 2016-07-18 삼성디스플레이 주식회사 액정 표시 장치 및 그 구동 방법
CN104900209A (zh) * 2015-06-29 2015-09-09 深圳市华星光电技术有限公司 基于子像素信号亮暗切换时过驱动目标值的计算方法
CN105528999B (zh) * 2016-01-15 2018-05-08 合一智能科技（深圳）有限公司 液晶显示屏的显示控制方法和装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030008044A (ko) * 2001-07-12 2003-01-24 삼성전자 주식회사 광시야각 모드용 액정 표시 장치와 이의 구동 방법
US20030184570A1 (en) * 2002-03-29 2003-10-02 Chi Mei Optoelectronics Corporation Driving device and its driving method of liquid crystal display
CN1727946A (zh) * 2004-07-28 2006-02-01 夏普株式会社 液晶显示器及其驱动方法
CN101894520A (zh) * 2010-08-06 2010-11-24 友达光电股份有限公司 平面显示器与平面显示器的显示数据控制方法
CN102427517A (zh) * 2011-09-30 2012-04-25 青岛海信电器股份有限公司 动态对比度的调整方法及装置、液晶电视机
CN105096852A (zh) * 2015-06-19 2015-11-25 深圳市华星光电技术有限公司 用于液晶面板的极性反转的驱动方法
CN106205533A (zh) * 2016-08-29 2016-12-07 深圳市华星光电技术有限公司 一种lcd大视角显示的改善方法及装置

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