WO2016179867A1 - 用于控制图像显示的方法 - Google Patents
用于控制图像显示的方法 Download PDFInfo
- Publication number
- WO2016179867A1 WO2016179867A1 PCT/CN2015/080821 CN2015080821W WO2016179867A1 WO 2016179867 A1 WO2016179867 A1 WO 2016179867A1 CN 2015080821 W CN2015080821 W CN 2015080821W WO 2016179867 A1 WO2016179867 A1 WO 2016179867A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- output
- gray level
- actual
- gray scale
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
- G09G2320/0257—Reduction of after-image effects
-
- 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
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
- G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
-
- 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
- G09G2320/10—Special adaptations of display systems for operation with variable images
- G09G2320/103—Detection of image changes, e.g. determination of an index representative of the image change
-
- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
-
- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2077—Display of intermediate tones by a combination of two or more gradation control methods
- G09G3/2081—Display of intermediate tones by a combination of two or more gradation control methods with combination of amplitude modulation and time modulation
Definitions
- the present invention relates to the field of liquid crystal display technology, and in particular to a method for controlling image display in a liquid crystal display device.
- TFT-LCD Thin Film Transistor-Liquid Crystal Display
- the present invention provides an image display control method for eliminating still image afterimages.
- a method for controlling image display including:
- the actual gray scale is alternately replaced with the output gray scale to form a dynamic image output.
- the brightness value of the actual gray level is equal to the brightness value common to the plurality of output gray levels corresponding to the actual gray level.
- the plurality of output gray levels comprise different first output gray levels and second output gray levels, wherein the first output gray level represents a high gray level relative to the actual gray level The second output gray level represents a low gray level relative to the actual gray level.
- the first gray scale and the second output gray scale corresponding to the actual gray scale are generated by querying the preset gray scale table.
- forming the dynamic image output further comprises:
- each pixel Generating a first image and a second image based on the first gray scale and the second gray scale corresponding to the actual gray scale of each pixel, the first image and the second image alternately replacing the actual gray scale image in a predetermined manner
- each pixel outputs a first output gray level or a second output gray level corresponding to its actual gray level.
- an output gray scale of each pixel is different from an output gray scale of an adjacent pixel thereof.
- alternately replacing the actual grayscale image forming dynamic image output in a predetermined manner includes: using one frame image as a loop unit, the first image and the second image being alternately cyclically outputted.
- alternately replacing the actual grayscale image forming dynamic image output in a predetermined manner comprises: using two frames of images as a loop unit, consecutively two frames of the first image and two consecutive frames of the second image alternately looping Output.
- determining whether a still image appears further comprises:
- the first output gray level and the second output gray level corresponding to the actual gray level are obtained by a pre-test, and the first output gray level corresponding to the actual gray level And the second output gray scale is variable.
- the invention controls the image display by combining the spatial domain and the time domain, and processes the static image into a dynamic image output, thereby solving the afterimage problem of the static image of the display image.
- 1 is a schematic diagram of generation of residual image of a liquid crystal display panel
- FIG. 2 is a flow chart of a method in accordance with one embodiment of the present invention.
- FIG. 3 is a flowchart of an algorithm in accordance with one embodiment of the present invention.
- FIG. 4 is a schematic diagram of an actual grayscale image and its corresponding output grayscale image, in accordance with one embodiment of the present invention.
- the afterimage is also called image sticking, which is the phenomenon that the same still picture is displayed for a long time, and the previous picture is left after changing the display content.
- image sticking is the phenomenon that the same still picture is displayed for a long time, and the previous picture is left after changing the display content.
- FIG. 1 is a schematic diagram showing the afterimage generation of the liquid crystal display panel.
- FIG. 2 is a flowchart of a method according to an embodiment of the present invention.
- FIG. 3 is a flowchart of an algorithm according to an embodiment of the present invention. The present invention will be described in detail below with reference to FIGS. 2 and 3.
- step S110 it is judged whether or not a still image appears.
- this step it is possible to judge whether or not a still image appears by the duration of the same image on the display panel.
- whether the liquid crystal display panel has a static image may be determined based on the algorithm flowchart shown in FIG. 3 .
- the next frame image is received, it is determined whether the received next frame image is the same as the previous frame image, and the same number of repetitions of the same image appear, and the statistics are zero.
- the received next frame image is compared with the previous frame image. If the comparison result indicates that the two frames are the same, the number of repetitions of the same image appears to be counted. The number of repetitions in which the same image appears corresponds to the duration of the same image.
- counting the number of repetitions of the same image it can be implemented by the counting method as shown in FIG.
- the counter is incremented by increment 1, indicating that the same image is repeated once.
- the counter is cleared, so that it is guaranteed that the counter starts counting from zero when the next occurrence of the next frame image is the same as the previous frame image.
- the preset value is used to indicate that a still frame, that is, a still image, appears on the display.
- a still image is considered to have appeared.
- the counter value corresponding to the preset value is set to 10 or other values.
- the display device normally outputs and receives The current frame image to.
- step S120 when a still image appears, the actual grayscale of each pixel in the same image is acquired. Since the previous frame image and the next frame image are the same at this time, the actual gray scale of each pixel can be obtained by any one of the frame images.
- step S130 a plurality of output gray levels corresponding to actual gray levels of each pixel in the still image are generated.
- the brightness value of the actual gray level is equal to the brightness value common to the plurality of output gray levels corresponding to the actual gray level.
- the plurality of output grayscales are set to include two output grayscales of different first output grayscales and second output grayscales. Wherein, the first output gray level represents a high gray level with respect to the actual gray level, and the second output gray level represents a low gray level with respect to the actual gray level.
- the common luminance value of the first output gray scale and the second output gray scale is equal to the luminance value of the actual gray scale.
- the first output gray level and the second output gray level corresponding to each actual gray level are obtained by a preset gray scale table query.
- the gray scale table can be established by the following steps.
- the first output gray level and the second output gray level corresponding to each actual gray level are obtained by a pre-test method.
- the first output gray level and the second output gray level corresponding to the actual gray level may be set, since it is only required to ensure that the brightness value common to the first output gray level and the second output gray level is equal to the brightness value of the actual gray level.
- Combine for different values That is to say, the values of the first output gray level and the second output gray level corresponding to the actual gray level are variable, and the specific values can be obtained through debugging by a debugging tool.
- a specific gray scale table is shown in Table 1.
- the received gray level represents the actual gray level of the pixel
- the output gray level h represents the first output gray level corresponding to the actual gray level
- the output gray level 1 represents the second output gray level corresponding to the actual gray level.
- the output gray scale h corresponding to the 128 gray scale is 135 gray scale
- the output gray scale 1 is 119 gray scale
- the common luminance value of the 135 gray scale and the 119 gray scale is the same as the luminance value of the 128 gray scale.
- the specific values of the output gray level h and the output gray level 1 can be obtained by CA-320 debugging.
- 3 gray scale is used as the output gray scale h, 0 gray scale.
- the actual value corresponding to the 0 gray scale is based on the fact that the flicker is not visible to the naked eye. 255 grayscale similar processing.
- step S140 the actual gray scale is alternately replaced with a plurality of output gray scales to form a dynamic image output.
- forming the dynamic image output further includes generating the first image and the second image based on the first output grayscale and the second output grayscale corresponding to the actual grayscale of each pixel.
- the first image and the second image alternately replace the actual grayscale image forming dynamic image output in a predetermined manner. Wherein, when the first image and the second image are output, each pixel outputs a first output gray level or a second output gray level corresponding to the actual gray level.
- the output grayscale of each pixel in the first image is converted to form a second image, that is, the first output grayscale in the first image is converted into the second output grayscale or the second output grayscale is converted to
- the second image is formed after the first output gray scale, and vice versa. That is, the output order of the output gray scale of each pixel in the first image and the second image is different.
- the actual grayscale image pt corresponds to two output images: a first image pt-a and a second image pt-b.
- the output order of the output grayscale corresponding to the 120th grayscale and the 0th grayscale is in the first image pt-a and the second.
- the image is different in pt-b.
- the display effect of excessively bright or too dark is avoided, and the output of each pixel in the spatial domain is output when the first image and the second image are output.
- the gray scale is different from the output order of the output gray scales of its neighboring pixels. As shown in FIG.
- one frame of the first image pt-a and one frame of the second image pt-b may be alternately output in time with one frame of image as a cyclic unit.
- two frames of images may be used as a loop unit, and two consecutive frames of the first image pt-a and two consecutive frames of the second image pt-b are alternately cyclically output.
- the first image pt-a and the second image pt-b are alternately cyclically output in a predetermined manner.
- the display panel receives and displays the image normally. If the display image received next is still the same image as before, when the number of repetitions of the same image consecutively reaches a preset value: if a frame image is used as a loop unit, such as outputting the first image pt before the counter is cleared.
- the afterimage problem of the still picture is solved by image control processing of the display image in the spatial domain and the time domain.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
一种用于控制图像显示的方法,包括:判断是否出现静态图像(S110);当出现静态图像时获取相同图像每个像素的实际灰阶(S120);产生静态图像中每个像素的实际灰阶对应的多个输出灰阶(S130);用多个输出灰阶交替取代实际灰阶以形成动态图像输出(S140)。该方法通过结合空间域和时间域对图像显示进行控制,将静态图像处理为动态图像输出,解决了显示画面的静态图像的残像问题。
Description
相关技术的交叉引用
本申请要求享有2015年05月12日提交的名称为“用于控制图像显示的方法”的中国专利申请CN201510239875.1的优先权,其全部内容通过引用并入本文中。
本发明涉及液晶显示技术领域,具体地说,涉及一种用于液晶显示装置中的控制图像显示的方法。
随着TFT-LCD(薄膜晶体管-液晶显示器)向高色域、低色偏、高分辨率等方向的发展,对TFT-LCD产品的可靠性也有了更高的要求。当TFT-LCD显示面板长时间显示同一静态画面,液晶因受到长时间的驱动被极化,这就造成液晶分子不能在信号电压控制下正常旋转。经过一段时间改变画面的显示内容后,仍然可以看到之前静态画面的痕迹,即留下之前静态画面的残像。
发明内容
为解决以上问题,本发明提供了一种用于消除静态图像残像的图像显示控制方法。
根据本发明的一个实施例,提供了一种用于控制图像显示的方法,包括:
判断是否出现静态图像;
当出现静态图像时,获取所述静态图像中每个像素的实际灰阶,并产生实际灰阶对应的多个输出灰阶;
用所述输出灰阶交替取代实际灰阶以形成动态图像输出。
根据本发明的一个实施例,所述实际灰阶的亮度值与该实际灰阶对应的多个输出灰阶共同的亮度值相等。
根据本发明的一个实施例,所述多个输出灰阶包括不同的第一输出灰阶和第二输出灰阶,其中,所述第一输出灰阶表示相对于该实际灰阶的高灰阶,所述第二输出灰阶表示相对于该实际灰阶的低灰阶。
根据本发明的一个实施例,通过查询预设的灰阶表产生实际灰阶对应的第一输出灰阶和第二输出灰阶。
根据本发明的一个实施例,形成动态图像输出进一步包括:
基于每个像素的实际灰阶对应的第一输出灰阶和第二输出灰阶产生第一图像和第二图像,所述第一图像和所述第二图像按预定方式交替取代实际灰阶图像以形成动态图像输出,其中,在所述第一图像和所述第二图像输出时,各个像素输出其实际灰阶对应的第一输出灰阶或第二输出灰阶。
根据本发明的一个实施例,所述第一图像和所述第二图像输出时,每个像素的输出灰阶与其相邻像素的输出灰阶的输出次序不同。
根据本发明的一个实施例,按预定方式交替取代实际灰阶图像形成动态图像输出包括:以一帧图像为循环单元,所述第一图像和所述第二图像交替循环输出。
根据本发明的一个实施例,按预定方式交替取代实际灰阶图像形成动态图像输出包括:以两帧图像为循环单元,连续两帧所述第一图像和连续两帧所述第二图像交替循环输出。
根据本发明的一个实施例,判断是否出现静态图像进一步包括:
判断接收的下一帧图像与上一帧图像是否相同,若相同则统计相同图像出现的重复次数,若不同则统计归零;
当出现相同图像时,判断相同图像出现的重复次数是否大于等于预设值,若重复次数大于等于预设值,则表明出现静态图像,否则未出现静态图像。
根据本发明的一个实施例,所述实际灰阶对应的所述第一输出灰阶和所述第二输出灰阶通过预先测试获取,并且所述实际灰阶对应的所述第一输出灰阶和所述第二输出灰阶可变。
本发明通过结合空间域和时间域对图像显示进行控制,将静态图像处理为动态图像输出,解决了显示画面的静态图像的残像问题。
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,与本发明的实施例共同用于解释本发明,并不构成对本发明的限制。在附图中:
图1是液晶显示面板残像产生原理图;
图2是根据本发明的一个实施例的方法流程图;
图3是根据本发明的一个实施例的算法流程图;以及
图4是根据本发明的一个实施例的实际灰阶图像与其对应的输出灰阶图像示意图。
为使本发明的目的、技术方案和优点更加清楚,以下结合附图对本发明作进一步地详细说明。
残像也叫影像残留,是长时间显示同一静止画面,在改变显示内容后留下之前画面的现象。在所有的液晶显示器中,或轻或重地都存在残像问题。
如图1所示为液晶显示面板的残像产生原理图。当显示面板长时间显示静态画面时,面板内的离子会沿电场方向移动,并在液晶取向层上聚集,聚集的离子会产生内部电场。当显示其他画面时,由于聚集于取向层的离子无法离开取向层,导致液晶分子上存在残留直流电压。该直流电压形成内电场,使得液晶分子极化并处于一定的旋转角度无法变化。这样,当显示画面切换下一画面时,显示面板上残留上一个画面的图像,从而造成残像。因此,本发明提出了一种解决液晶显示面板残像的图像显示控制方法。
如图2所示为根据本发明的一个实施例的方法流程图,如图3所示为根据本发明的一个实施例的算法流程图,以下参考图2和图3来对本发明进行详细说明。
首先,在步骤S110中,判断是否出现静态图像。在该步骤中,可以通过显示面板上同一图像的持续时间来判断是否出现静态图像。
具体实现时,可基于如图3所示的算法流程图来判断液晶显示面板是否出现静态图像。当接收到下一帧图像时,判断接收的下一帧图像与上一帧图像是否相同,相同则统计相同图像出现的重复次数,不同则统计归零。
将接收到的下一帧图像与上一帧图像进行比较,如果比较结果表明两帧图像相同,则开始统计相同图像出现的重复次数。相同图像出现的重复次数对应同一图像的持续时间。统计相同图像出现的重复次数时,可采用如图3所示的计数方法实现。在判断得知下一帧图像与上一帧图像相同时,计数器以增量1递增,表明相同图像重复出现了1次。当下一帧图像与上一帧图像不同时,计数器清零,这样就可以保证在第一次出现下一帧图像与上一帧图像相同的情况时,计数器从零开始计数。
接下来,判断相同图像出现的重复次数是否大于等于预设值N。预设值用于表明显示画面上出现了静帧,即静态图像。在此处,设定相同的图像帧连续累积到一定数量后(对
应计数器计数),则认为出现了静态图像。例如,预设值对应的计数器计数设定为10或其他值。当重复次数大于等于预设值时,则认为出现了静态图像,需要对该静态图像进行处理。
此处,在相同图像出现的重复次数小于预设值和下一帧图像与上一帧图像不同时,即显示的为非静态图像时,对计数器做相应的计数处理,而显示装置正常输出接收到的当前帧图像。
接下来,在步骤S120中,当出现静态图像时,获取相同图像中每个像素的实际灰阶。由于此时上一帧图像和下一帧图像相同,则可以通过其中的任一帧图像获取每个像素的实际灰阶。
接下来,在步骤S130中,产生静态图像中每个像素的实际灰阶对应的多个输出灰阶。为保证面板的显示亮度,在本发明的一个实施例中,实际灰阶的亮度值与该实际灰阶对应的多个输出灰阶共同的亮度值相等。为有利于设计实现,在本发明的一个实施例中,将多个输出灰阶设置为包括不同的第一输出灰阶和第二输出灰阶的两个输出灰阶。其中,第一输出灰阶表示相对于该实际灰阶的高灰阶,第二输出灰阶表示相对于该实际灰阶的低灰阶。第一输出灰阶和第二输出灰阶的共同的亮度值与该实际灰阶的亮度值相等。
在本发明的一个实施例中,通过预设的灰阶表查询获取每个实际灰阶对应的第一输出灰阶和第二输出灰阶。其中,灰阶表可以通过以下步骤建立。
首先,通过预先测试的方法获取每个实际灰阶对应的第一输出灰阶和第二输出灰阶。由于只需保证第一输出灰阶和第二输出灰阶共同的亮度值与该实际灰阶的亮度值相等,则可将该实际灰阶对应的第一输出灰阶和第二输出灰阶设置为不同的数值组合。也就是说,该实际灰阶对应的第一输出灰阶和第二输出灰阶的取值可变,具体取值可通过调试工具调试得到,具体的一个灰阶表如表1所示。
如表1所示,接收灰阶表示该像素的实际灰阶,输出灰阶h表示该实际灰阶对应的第一输出灰阶,输出灰阶1表示该实际灰阶对应的第二输出灰阶。通过该灰阶表可查找到每个像素的实际灰阶对应的两个输出灰阶。第一输出灰阶一般设置为大于第二输出灰阶,只需在实际灰阶的最小值和最大值处特别设置。如表1所示,128灰阶对应的输出灰阶h为135灰阶,输出灰阶1为119灰阶,135灰阶和119灰阶的共同亮度值与128灰阶的亮度值相同。输出灰阶h和输出灰阶1的具体取值可以通过CA-320调试得到。同时,如表1所示,由于没有比灰阶0更低的灰阶,所以在设置实际灰阶为0灰阶时的输出灰阶时,使用3灰阶为输出灰阶h,0灰阶为输出灰阶1,其中0灰阶对应的实际值以肉眼看不到闪烁为标准。255灰阶类似处理。
表1
| 接收灰阶 | 输出灰阶h | 输出灰阶1 |
| 0 | 3 | 0 |
| … | … | … |
| … | … | … |
| 128 | 135 | 119 |
| … | … | … |
| … | … | … |
| 255 | 255 | 253 |
接下来,在步骤S140中,用多个输出灰阶交替取代实际灰阶以形成动态图像输出。在该步骤中,形成动态图像输出进一步包括基于每个像素的实际灰阶对应的第一输出灰阶和第二输出灰阶产生第一图像和第二图像。第一图像和第二图像按预定方式交替取代实际灰阶图像形成动态图像输出。其中,在第一图像和第二图像输出时,各个像素输出其实际灰阶对应的第一输出灰阶或第二输出灰阶。
在该步骤中,第一图像中每个像素的输出灰阶发生转换后形成第二图像,即第一图像中的第一输出灰阶转换为第二输出灰阶或第二输出灰阶转换为第一输出灰阶后形成第二图像,反之亦然。也就是说,第一图像和第二图像中每个像素的输出灰阶的输出次序不同。如图4所示,实际灰阶图像pt对应产生两个输出图像:第一图像pt-a和第二图像pt-b。以实际灰阶图像pt内部的两个像素的实际灰阶120灰阶和0灰阶为例,120灰阶和0灰阶对应的输出灰阶的输出次序在第一图像pt-a和第二图像pt-b中不同。
在本发明的一个实施例中,为保证显示面板的整体显示亮度,避免出现过亮或过暗的显示效果,在第一图像和第二图像输出时,在空间域中,每个像素的输出灰阶与其相邻像素的输出灰阶的输出次序不同。如图4所示,在第一图像pt-a和第二图像pt-b中,当一个像素的输出灰阶为第一输出灰阶(即输出灰阶h)时,与该像素相邻的上下左右四个像素输出第二输出灰阶(即输出灰阶1),当一个像素的输出灰阶为第二输出灰阶时,与该像素相邻的上下左右四个像素输出第一输出灰阶。
第一图像和第二图像按预定方式交替取代实际灰阶图像形成动态图像输出时,可以采取不同的第一图像和第二图像的交替组合方式。在本发明的一个实施例中,可以以一帧图像为循环单元,在时间上交替输出一帧第一图像pt-a和一帧第二图像pt-b。或者,在本发明的另一个实施例中,可以以两帧图像为循环单元,连续两帧第一图像pt-a和连续两帧第二图像pt-b交替循环输出。这样,在静态图像持续期间,第一图像pt-a和第二图像pt-b按预定方式交替循环输出。在两个图像交替输出的过程中,向显示面板中的每个像素施两
个不同的输出灰阶,使得液晶面板中的电场发生变化。这样,就可以避免面板内部离子聚集形成内部电场,进而避免液晶分子被该内部电场极化后处于一定的旋转角度无法变化,从而消除静态图像持续时间太长造成的残像问题。当然,第一图像pt-a和第二图像pt-b交替输出的方式不限于以上两种方式,交替输出的图像也不限于以上的两个图像。
在该步骤中,在第一图像pt-a和第二图像pt-b交替输出的过程中,每输出一帧第一图像pt-a或第二图pt-b像后,相同图像的重复次数统计归零(计数器清零),显示面板正常接收并显示图像。如果接下来接收的显示画面还是与之前相同的图像,则在该相同图像连续出现的重复次数达到预设值时:如以一帧图像为循环单元,如在计数器清零前输出第一图像pt-a,则这次输出第二图像pt-b,如在计数器清零前输出第二图像pt-b,则这次输出第一图像pt-a;如以两帧图像为循环单元,如在计数器清零前输出第一图像pt-a,则这次输出第一图像pt-a,同理,第三次输出第二图像pt-b,第四次输出第二图像pt-b,以此类推循环。
在本发明中,通过对静态画面进行检测以获知出现静态画面时,通过对显示图像在空间域和时间域上的图像控制处理,解决了静态画面的残像问题。
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 (14)
- 一种用于控制图像显示的方法,包括:判断是否出现静态图像;当出现静态图像时,获取所述静态图像中每个像素的实际灰阶,并产生实际灰阶对应的多个输出灰阶;用所述输出灰阶交替取代实际灰阶以形成动态图像输出。
- 根据权利要求1所述的方法,其中,所述实际灰阶的亮度值与该实际灰阶对应的多个输出灰阶共同的亮度值相等。
- 根据权利要求2所述的方法,其中,所述多个输出灰阶包括不同的第一输出灰阶和第二输出灰阶,其中,所述第一输出灰阶表示相对于该实际灰阶的高灰阶,所述第二输出灰阶表示相对于该实际灰阶的低灰阶。
- 根据权利要求3所述的方法,其中,通过查询预设的灰阶表产生实际灰阶对应的第一输出灰阶和第二输出灰阶。
- 根据权利要求3所述的方法,其中,形成动态图像输出进一步包括:基于每个像素的实际灰阶对应的第一输出灰阶和第二输出灰阶产生第一图像和第二图像,所述第一图像和所述第二图像按预定方式交替取代实际灰阶图像以形成动态图像输出,其中,在所述第一图像和所述第二图像输出时,各个像素输出其实际灰阶对应的第一输出灰阶或第二输出灰阶。
- 根据权利要求5所述的方法,其中,所述第一图像和所述第二图像输出时,每个像素的输出灰阶与其相邻像素的输出灰阶的输出次序不同。
- 根据权利要求6所述的方法,其中,按预定方式交替取代实际灰阶图像以形成动态图像输出包括:以一帧图像为循环单元,一帧所述第一图像和一帧所述第二图像交替循环输出。
- 根据权利要求6所述的方法,其中,按预定方式交替取代实际灰阶图像以形成动态图像输出包括:以两帧图像为循环单元,连续两帧所述第一图像和连续两帧所述第二图像交替循环输出。
- 根据权利要求1所述的方法,其中,判断是否出现静态图像进一步包括:判断接收的下一帧图像与上一帧图像是否相同,若相同则统计相同图像出现的重复次数,若不同则统计归零;当出现相同图像时,判断相同图像出现的重复次数是否大于等于预设值,若重复次数大于等于预设值,则表明出现静态图像,否则未出现静态图像。
- 根据权利要求3所述的方法,其中,所述实际灰阶对应的所述第一输出灰阶和所述第二输出灰阶通过预先测试获取,并且所述实际灰阶对应的所述第一输出灰阶和所述第二输出灰阶可变。
- 根据权利要求4所述的方法,其中,形成动态图像输出进一步包括:基于每个像素的实际灰阶对应的第一输出灰阶和第二输出灰阶产生第一图像和第二图像,所述第一图像和所述第二图像按预定方式交替取代实际灰阶图像以形成动态图像输出,其中,在所述第一图像和所述第二图像输出时,各个像素输出其实际灰阶对应的第一输出灰阶或第二输出灰阶。
- 根据权利要求11所述的方法,其中,所述第一图像和所述第二图像输出时,每个像素的输出灰阶与其相邻像素的输出灰阶的输出次序不同。
- 根据权利要求12所述的方法,其中,按预定方式交替取代实际灰阶图像以形成动态图像输出包括:以一帧图像为循环单元,一帧所述第一图像和一帧所述第二图像交替循环输出。
- 根据权利要求12所述的方法,其中,按预定方式交替取代实际灰阶图像以形成动态图像输出包括:以两帧图像为循环单元,连续两帧所述第一图像和连续两帧所述第二图像交替循环输出。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/785,989 US9898977B2 (en) | 2015-05-12 | 2015-06-04 | Method for controlling image display |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239875.1A CN104821160B (zh) | 2015-05-12 | 2015-05-12 | 用于控制图像显示的方法 |
| CN201510239875.1 | 2015-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016179867A1 true WO2016179867A1 (zh) | 2016-11-17 |
Family
ID=53731437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2015/080821 Ceased WO2016179867A1 (zh) | 2015-05-12 | 2015-06-04 | 用于控制图像显示的方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9898977B2 (zh) |
| CN (1) | CN104821160B (zh) |
| WO (1) | WO2016179867A1 (zh) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225627B (zh) * | 2015-10-23 | 2018-01-09 | 深圳市华星光电技术有限公司 | 一种显示装置及其驱动方法 |
| CN106097970B (zh) | 2016-08-10 | 2018-11-20 | 深圳市华星光电技术有限公司 | 一种降低amoled显示残影的驱动方法及驱动系统 |
| CN106531106B (zh) * | 2016-12-27 | 2017-11-10 | 惠科股份有限公司 | 液晶显示器及其驱动方法 |
| CN106782377B (zh) * | 2016-12-27 | 2018-01-23 | 惠科股份有限公司 | 液晶显示器件及其驱动方法 |
| CN109272964B (zh) * | 2018-11-20 | 2021-01-08 | 深圳市巨烽显示科技有限公司 | 一种用于消除单色显示器残影的方法及装置 |
| JP7416532B2 (ja) * | 2019-10-01 | 2024-01-17 | シャープ株式会社 | 表示制御装置、表示装置、表示制御装置の制御プログラムおよび制御方法 |
| CN110738969A (zh) * | 2019-10-31 | 2020-01-31 | 云谷(固安)科技有限公司 | 显示装置及设备 |
| CN111432257A (zh) * | 2020-03-26 | 2020-07-17 | 海信视像科技股份有限公司 | 一种显示设备开启屏幕保护的方法及显示设备 |
| CN111933089A (zh) * | 2020-08-20 | 2020-11-13 | 福建捷联电子有限公司 | 一种改善液晶显示器残影的方法 |
| WO2023130444A1 (zh) | 2022-01-10 | 2023-07-13 | 京东方科技集团股份有限公司 | 显示面板的驱动方法及显示装置 |
| CN114387934A (zh) * | 2022-01-26 | 2022-04-22 | 福建华佳彩有限公司 | 一种提升烧附性能的lcd显示方法 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131489A (zh) * | 2006-08-21 | 2008-02-27 | 中华映管股份有限公司 | 解决及避免液晶显示器永久烙痕的方法 |
| US20080136761A1 (en) * | 2006-12-12 | 2008-06-12 | Samsung Electronics Co., Ltd. | Display Apparatus and Method of Driving the Same |
| CN101256731A (zh) * | 2007-03-02 | 2008-09-03 | 三星电子株式会社 | 显示设备及其控制方法 |
| CN101261814A (zh) * | 2007-03-08 | 2008-09-10 | 晶宏半导体股份有限公司 | 液晶显示器的驱动方法 |
| CN101286303A (zh) * | 2007-04-13 | 2008-10-15 | 奇美电子股份有限公司 | 液晶显示装置及其影像显示方法 |
| CN101593494A (zh) * | 2008-05-28 | 2009-12-02 | 群康科技(深圳)有限公司 | 液晶显示器及其驱动方法 |
| CN103778897A (zh) * | 2014-01-28 | 2014-05-07 | 北京京东方显示技术有限公司 | 一种图像显示控制方法及装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4370925B2 (ja) * | 2004-02-12 | 2009-11-25 | 日本ビクター株式会社 | 表示装置 |
| KR100634731B1 (ko) * | 2005-01-11 | 2006-10-16 | 엘지전자 주식회사 | 플라즈마 디스플레이 패널의 화상처리 장치 및 화상처리방법 |
| CN100578584C (zh) * | 2006-07-17 | 2010-01-06 | 中华映管股份有限公司 | 等离子显示面板的驱动装置及其驱动方法 |
| CN101212606B (zh) * | 2006-12-25 | 2011-09-28 | 奇美电子股份有限公司 | 像素驱动与显示影像数据的方法 |
| CN101226289B (zh) * | 2007-01-15 | 2010-05-19 | 钰瀚科技股份有限公司 | 液晶显示面板的多重gamma驱动方法 |
| CN101241676B (zh) * | 2007-02-07 | 2012-01-04 | 奇美电子股份有限公司 | 可改善双重边界问题的显示影像数据的方法和显示装置 |
| CN101308636B (zh) * | 2007-05-15 | 2013-02-06 | 奇美电子股份有限公司 | 能改善动态画面的显示品质的液晶显示器及其驱动方法 |
| KR101388583B1 (ko) * | 2007-06-12 | 2014-04-24 | 삼성디스플레이 주식회사 | 구동장치, 이를 갖는 표시장치 및 표시장치의 구동방법 |
| CN101452681A (zh) * | 2007-12-06 | 2009-06-10 | 佳世达科技股份有限公司 | 液晶显示器根据显示内容处理影像的方法 |
| CN102402939A (zh) * | 2011-12-31 | 2012-04-04 | 四川虹欧显示器件有限公司 | 等离子显示器及其控制方法和装置 |
-
2015
- 2015-05-12 CN CN201510239875.1A patent/CN104821160B/zh active Active
- 2015-06-04 WO PCT/CN2015/080821 patent/WO2016179867A1/zh not_active Ceased
- 2015-06-04 US US14/785,989 patent/US9898977B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131489A (zh) * | 2006-08-21 | 2008-02-27 | 中华映管股份有限公司 | 解决及避免液晶显示器永久烙痕的方法 |
| US20080136761A1 (en) * | 2006-12-12 | 2008-06-12 | Samsung Electronics Co., Ltd. | Display Apparatus and Method of Driving the Same |
| CN101256731A (zh) * | 2007-03-02 | 2008-09-03 | 三星电子株式会社 | 显示设备及其控制方法 |
| CN101261814A (zh) * | 2007-03-08 | 2008-09-10 | 晶宏半导体股份有限公司 | 液晶显示器的驱动方法 |
| CN101286303A (zh) * | 2007-04-13 | 2008-10-15 | 奇美电子股份有限公司 | 液晶显示装置及其影像显示方法 |
| CN101593494A (zh) * | 2008-05-28 | 2009-12-02 | 群康科技(深圳)有限公司 | 液晶显示器及其驱动方法 |
| CN103778897A (zh) * | 2014-01-28 | 2014-05-07 | 北京京东方显示技术有限公司 | 一种图像显示控制方法及装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104821160B (zh) | 2017-09-12 |
| US9898977B2 (en) | 2018-02-20 |
| US20170162137A1 (en) | 2017-06-08 |
| CN104821160A (zh) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016179867A1 (zh) | 用于控制图像显示的方法 | |
| CN105096829B (zh) | 消除残影的方法、装置以及显示器 | |
| US8026927B2 (en) | Reduction of mura effects | |
| CN102842299B (zh) | 一种液晶显示装置的驱动方法、驱动装置及液晶显示装置 | |
| CN104297960B (zh) | 一种画面显示方法及装置 | |
| CN103065591A (zh) | 一种液晶面板驱动模式的动态切换方法 | |
| CN103778897B (zh) | 一种图像显示控制方法及装置 | |
| CN112863439A (zh) | 一种改善oled残像的方法、装置、显示装置及介质 | |
| CN104318893A (zh) | 一种消除静态图像显示区域残影缺陷的方法和系统 | |
| US20190130853A1 (en) | Apparatus for enhancing brightness uniformity of displayed image, display apparatus, and method for displaying image | |
| WO2017000368A1 (zh) | 基于子像素信号亮暗切换时过驱动目标值的计算方法 | |
| CN108877615B (zh) | 显示面板的残像检测方法和残像检测装置 | |
| CN108039155B (zh) | 获取液晶显示器的过驱动查找表的方法 | |
| CN101452681A (zh) | 液晶显示器根据显示内容处理影像的方法 | |
| CN102800290B (zh) | 一种液晶显示装置的插帧方法及液晶显示装置 | |
| US20090140964A1 (en) | Method of processing lcd images according to content of the images | |
| CN104183223B (zh) | 一种显示装置、驱动装置和驱动方法 | |
| CN107561743B (zh) | 一种液晶显示面板的残像判断方法 | |
| CN107039010B (zh) | 伽马曲线自动修复系统及伽马曲线自动修复方法 | |
| KR20130110388A (ko) | 액정표시장치의 플리커 조정방법 | |
| CN104656291B (zh) | 一种鉴别直流残像的系统以及方法 | |
| Sasaki et al. | 29.2: Motion Picture Simulation for Designing High‐Picture‐Quality Hold‐Type Displays | |
| CN117524140A (zh) | 残影改善方法、残影改善装置及计算机可读介质 | |
| US20180182325A1 (en) | Driving method for liquid crystal panel and driving device of the same | |
| CN110827733A (zh) | 用于显示面板的显示方法与显示设备 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 14785989 Country of ref document: US |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15891570 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 15891570 Country of ref document: EP Kind code of ref document: A1 |