WO2017080299A1

WO2017080299A1 - Liquid crystal display, and luminance adjusting method and apparatus therefor

Info

Publication number: WO2017080299A1
Application number: PCT/CN2016/098793
Authority: WO
Inventors: 宁超; 曹谦; 苏文华; 姚键; 潘柏宇; 王冀
Original assignee: 合一智能科技（深圳）有限公司
Priority date: 2015-11-13
Filing date: 2016-09-13
Publication date: 2017-05-18
Also published as: CN105336298A; CN105336298B

Abstract

A liquid crystal display, and a luminance adjusting method and apparatus therefor. The luminance adjusting method for the liquid crystal display comprises: determining a pixel needing to undergo grayscale switching in a display panel of a liquid crystal display to be a to-be-processed pixel area; determining, according to a corresponding relationship between pixels in the display panel and backlight areas in a backlight source, a backlight area, corresponding to the to-be-processed pixel area, in the backlight source to be a to-be-dimmed area; and during a liquid crystal deflection period in which the pixel of the to-be-processed pixel area undergoes grayscale switching, adjusting the luminance of the to-be-dimmed area according to a grayscale value of the pixel of the to-be-processed pixel area. The liquid crystal display and the luminance adjusting method and apparatus therefor can dynamically compensate a relevant backlight area in a backlight source, thereby alleviating the phenomenon of trailing in liquid crystal display, such that the luminance presented on a display panel finally tends to be consistent, thereby achieving a better moving display effect.

Description

液晶显示器及其亮度调节方法和装置Liquid crystal display and brightness adjustment method and device thereof

交叉引用cross reference

本申请主张2015年11月13日提交的中国专利申请号为201510776363.9的优先权，其全部内容通过引用包含于此。The present application claims priority to Chinese Patent Application No. 201510776363.9 filed on Nov. 13, 2015, the entire content of which is hereby incorporated by reference.

技术领域Technical field

本发明涉及液晶显示领域，尤其涉及一种液晶显示器及其亮度调节方法和装置。The present invention relates to the field of liquid crystal display, and more particularly to a liquid crystal display and a brightness adjusting method and apparatus thereof.

背景技术Background technique

垂直配向型(英文：Vertical Alignment，缩写：VA)液晶显示器的显示原理是：由于液晶分子偏转的角度与液晶分子的光通量相对应，可以通过使液晶分子偏转为不同的角度，来相应地控制通过液晶分子的光通量，从而实现液晶显示器的亮暗的变化显示效果。Vertical alignment type (English: Vertical Alignment, abbreviation: VA) The display principle of liquid crystal display is: because the angle of deflection of liquid crystal molecules corresponds to the luminous flux of liquid crystal molecules, it can be controlled accordingly by deflecting liquid crystal molecules to different angles. The luminous flux of the liquid crystal molecules, thereby realizing the bright and dark change display effect of the liquid crystal display.

然而，由于液晶分子固有的物理特性，在偏转时需要一定的时间，使得灰阶切换也需要一定的时间。例如，黑色背景下有一个白色方块从左到右移动时会出现拖尾的现象。这种拖尾现象会影响运动图像的显示效果。However, due to the inherent physical properties of the liquid crystal molecules, it takes a certain time to deflect, so that gray scale switching also takes a certain time. For example, there is a tailing phenomenon when a white square moves from left to right on a black background. This smearing affects the display of moving images.

发明内容Summary of the invention

技术问题technical problem

有鉴于此，本发明要解决的技术问题是，如何减轻液晶显示中的拖尾现象。In view of this, the technical problem to be solved by the present invention is how to reduce the tailing phenomenon in the liquid crystal display.

解决方案solution

根据本发明的一个方面，提供了一种液晶显示器的亮度调节方法，包括：将所述液晶显示器的显示面板内需要进行灰阶切换的像素确定为待处理像素区；根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述背光源中与所述待处理像素区对应的背光区域确定为待调光区域；以及在所述待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度。According to an aspect of the invention, a method for adjusting brightness of a liquid crystal display, comprising: Determining, in the display panel of the liquid crystal display, a pixel that needs to be gray-scale switched as a pixel area to be processed; according to a correspondence between a pixel in the display panel and a backlight area in the backlight, the backlight is a backlight region corresponding to the pixel region to be processed is determined as a to-be-dimmed region; and in a liquid crystal deflection period in which the pixels of the pixel region to be processed perform gray-scale switching, according to a grayscale value of a pixel of the pixel region to be processed, To adjust the brightness of the area to be dimmed.

对于上述亮度调节方法，在一种可能的实现方式中，所述待处理像素区的像素的灰阶值包括所述待处理像素区内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。In a possible implementation manner, in a possible implementation manner, the grayscale value of the pixel of the pixel region to be processed includes a maximum grayscale value of all pixels in the pixel region to be processed, and an average grayscale value of all pixels. Any of the value and the average grayscale value of a portion of the pixel.

对于上述亮度调节方法，在一种可能的实现方式中，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度包括：根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述显示面板中与所述待调光区域对应的显示区域确定为待处理显示区域；以及根据所述待处理显示区域的像素的灰阶值，来调节所述待调光区域的亮度，其中，所述待处理显示区域的像素的灰阶值包括所述待处理显示区域内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。For the above-mentioned brightness adjustment method, in a possible implementation, adjusting the brightness of the to-be-dimmed area according to the grayscale value of the pixel of the pixel area to be processed includes: according to the pixel in the display panel Corresponding relationship of the backlight area in the backlight, determining a display area corresponding to the to-be-dimmed area in the display panel as a to-be-processed display area; and according to a grayscale value of a pixel of the to-be-processed display area Adjusting a brightness of the to-be-dimmed region, where a grayscale value of a pixel of the to-be-processed display region includes a maximum grayscale value of all pixels in the to-be-processed display region, an average grayscale value of all pixels, and a portion Any of the average grayscale values of the pixel.

对于上述亮度调节方法，在一种可能的实现方式中，在所述待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度，包括：采用式1，来计算所述待调光区域在t时刻的亮度值，For the above-mentioned brightness adjustment method, in a possible implementation manner, in the liquid crystal deflection period in which the pixels of the pixel region to be processed perform gray-scale switching, the grayscale value of the pixel of the pixel region to be processed is adjusted. The brightness of the to-be-dimmed area includes: using Equation 1, to calculate the brightness value of the to-be-dimmed area at time t,

其中，A(t)是所述待调光区域在t时刻的亮度值，B(t)是所述待处理像素区的像素在t时刻的灰阶值，A_max是所述待调光区域的最大亮度值，a为预设的固定值，T为所述液晶偏转周期；以及根据所述待调光区域在t时刻的亮度值，来调节所述待调光区域在t时刻的亮度。Where A(t) is the luminance value of the to-be-dimmed region at time t, B(t) is the grayscale value of the pixel of the pixel region to be processed at time t, and _Amax is the to-be-dimmed region The maximum brightness value, a is a preset fixed value, T is the liquid crystal deflection period; and the brightness of the to-be-dimmed area at time t is adjusted according to the brightness value of the to-be-dimmed area at time t.

根据本发明的另一个方面，提供了一种液晶显示器的亮度调节装置，包括：第一确定模块，被配置为将所述液晶显示器的显示面板内需要进行灰阶切换的像素确定为待处理像素区；第二确定模块，与所述第一确定模块连接，被配置为根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述背光源中与所述待处理像素区对应的背光区域确定为待调光区域；以及调节模块，与所述第一确定模块和所述第二确定模块均连接，被配置为在所述待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度。According to another aspect of the present invention, a brightness adjustment apparatus for a liquid crystal display includes: a first determining module configured to determine pixels in the display panel of the liquid crystal display that need to be gray scale switched as pixels to be processed a second determining module, connected to the first determining module, configured to: in the backlight and the pixel to be processed according to a correspondence between a pixel in the display panel and a backlight region in a backlight a backlight area corresponding to the area is determined as a to-be-dimmed area; and an adjustment module is connected to both the first determining module and the second determining module, configured to perform gray-scale switching on pixels of the to-be-processed pixel area During the liquid crystal deflection period, the brightness of the to-be-dimmed region is adjusted according to the grayscale value of the pixel of the pixel region to be processed.

对于上述亮度调节装置，在一种可能的实现方式中，所述待处理像素区的像素的灰阶值包括所述待处理像素区内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。In a possible implementation manner, the grayscale value of the pixel of the pixel region to be processed includes a maximum grayscale value of all pixels in the pixel region to be processed, and an average grayscale of all pixels. Any of the value and the average grayscale value of a portion of the pixel.

对于上述亮度调节装置，在一种可能的实现方式中，所述第二确定模块还被配置为，根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述显示面板中与所述待调光区域对应的显示区域确定为待处理显示区域；所述调节模块还被配置为，根据所述第二确定模块确定出的所述待处理显示区域的像素的灰阶值，来调节所述待调光区域的亮度，其中，所述待处理显示区域的像素的灰阶值包括所述待处理显示区域内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。In a possible implementation manner, the second determining module is further configured to display the display panel according to a correspondence between a pixel in the display panel and a backlight region in the backlight. The display area corresponding to the to-be-dimmed area is determined as the to-be-processed display area; the adjustment module is further configured to determine a grayscale value of the pixel of the to-be-processed display area determined according to the second determining module And adjusting a brightness of the to-be-dimmed area, where a grayscale value of a pixel of the to-be-processed display area includes a maximum grayscale value of all pixels in the to-be-processed display area, and an average grayscale value of all pixels. And any of the average grayscale values of some pixels.

对于上述亮度调节装置，在一种可能的实现方式中，还包括计算模块，所述计算模块与所述第一确定模块、所述第二确定模块和所述调节模块均连接，被配置为采用式1，来计算所述待调光区域在t时刻的亮度值，For the above-mentioned brightness adjustment device, in a possible implementation, a calculation module is further included, and the calculation module is connected to the first determination module, the second determination module, and the adjustment module, and is configured to adopt Equation 1, to calculate the brightness value of the to-be-dimmed region at time t,

其中，A(t)是所述待调光区域在t时刻的亮度值，B(t)是所述待处理像素区的像素在t时刻的灰阶值，A_max是所述待调光区域的最大亮度值，a为预设的固定值，T为所述液晶偏转周期；所述调节模块还被配置为，根据所述计算模块计算出的所述待调光区域在t时刻的亮度值，来调节所述待调光区域在t时刻的亮度。Where A(t) is the luminance value of the to-be-dimmed region at time t, B(t) is the grayscale value of the pixel of the pixel region to be processed at time t, and _Amax is the to-be-dimmed region a maximum brightness value, a is a preset fixed value, and T is the liquid crystal deflection period; the adjustment module is further configured to calculate a brightness value of the to-be-dimmed area at time t according to the calculation module To adjust the brightness of the to-be-dimmed area at time t.

根据本发明的又一个方面，提供了一种液晶显示器，包括：显示面板，包括多个像素；背光源，被划分为多个背光区域；以及根据本发明实施例中任一实现方式所述的亮度调节装置，用于在所述显示面板内存在需要进行灰阶切换的像素的情况下，调节相对应的背光区域的亮度。According to still another aspect of the present invention, a liquid crystal display includes: a display panel including a plurality of pixels; a backlight divided into a plurality of backlight regions; and the implementation according to any one of the embodiments of the present invention The brightness adjusting device is configured to adjust the brightness of the corresponding backlight area in the case where there is a pixel in the display panel that needs to perform gray scale switching.

有益效果Beneficial effect

通过在需要进行灰阶切换的像素进行灰阶切换的液晶偏转周期内，始终根据这些像素的灰阶值，来调节相对应的背光区域的亮度，根据本发明实施例的液晶显示器及其亮度调节方法和装置能够实现对背光源中相关背光区域的动态补偿，从而减轻了液晶显示中的拖尾现象，使得显示面板上最终表现出来的亮度更趋于一致，达到了更好的运动显示效果。Adjusting the brightness of the corresponding backlight region according to the gray scale value of the pixels in the liquid crystal deflection period in which the gray scale switching is performed on the pixels that need to perform gray scale switching, the liquid crystal display and the brightness adjustment thereof according to the embodiment of the present invention The method and the device can realize the dynamic compensation of the relevant backlight region in the backlight, thereby reducing the tailing phenomenon in the liquid crystal display, so that the brightness finally displayed on the display panel is more consistent, and a better motion display effect is achieved.

根据下面参考附图对示例性实施例的详细说明，本发明的其它特征及方面将变得清楚。Further features and aspects of the present invention will become apparent from the Detailed Description of the Drawing.

附图说明DRAWINGS

包含在说明书中并且构成说明书的一部分的附图与说明书一起示出了本发明的示例性实施例、特征和方面，并且用于解释本发明的原理。The accompanying drawings, which are incorporated in FIG

图1示出根据本发明一实施例的液晶显示器的亮度调节方法的流程图；1 shows a flow chart of a method of adjusting brightness of a liquid crystal display according to an embodiment of the invention;

图2示出根据本发明另一实施例的液晶显示器的亮度调节方法的流程图；2 is a flow chart showing a method of adjusting brightness of a liquid crystal display according to another embodiment of the present invention;

图3示出根据本发明一实施例的液晶显示器的亮度调节方法中将背光源划分为多个背光区域的示例性示意图；3 illustrates a backlight in a method of adjusting brightness of a liquid crystal display according to an embodiment of the invention. An exemplary schematic diagram divided into a plurality of backlight regions;

图4示出根据本发明又一实施例的液晶显示器的亮度调节方法的流程图；4 is a flow chart showing a method of adjusting brightness of a liquid crystal display according to still another embodiment of the present invention;

图5a至图5c示出根据本发明实施例的液晶显示器的亮度调节方法中所采用的过驱动技术的示例性示意图；5a to 5c are diagrams showing an exemplary schematic of an overdrive technique employed in a method of adjusting brightness of a liquid crystal display according to an embodiment of the present invention;

图6示出根据本发明实施例的液晶显示器的亮度调节方法中所采用的原理的示例性示意图；6 shows an exemplary schematic diagram of a principle employed in a method of adjusting brightness of a liquid crystal display according to an embodiment of the present invention;

图7示出根据本发明一实施例的液晶显示器的亮度调节装置的框图；FIG. 7 is a block diagram showing a brightness adjusting device of a liquid crystal display according to an embodiment of the present invention; FIG.

图8示出根据本发明一实施例的液晶显示器的亮度调节装置的框图。FIG. 8 is a block diagram showing a brightness adjusting device of a liquid crystal display according to an embodiment of the present invention.

具体实施方式detailed description

以下将参考附图详细说明本发明的各种示例性实施例、特征和方面。附图中相同的附图标记表示功能相同或相似的元件。尽管在附图中示出了实施例的各种方面，但是除非特别指出，不必按比例绘制附图。Various exemplary embodiments, features, and aspects of the invention are described in detail below with reference to the drawings. The same reference numerals in the drawings denote the same or similar elements. Although the various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

在这里专用的词“示例性”意为“用作例子、实施例或说明性”。这里作为“示例性”所说明的任何实施例不必解释为优于或好于其它实施例。The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or preferred.

另外，为了更好的说明本发明，在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解，没有某些具体细节，本发明同样可以实施。在一些实例中，对于本领域技术人员熟知的方法、手段、元件和电路未作详细描述，以便于凸显本发明的主旨。In addition, numerous specific details are set forth in the Detailed Description of the invention in the Detailed Description. Those skilled in the art will appreciate that the invention may be practiced without some specific details. In some instances, methods, means, components, and circuits that are well known to those skilled in the art are not described in detail in order to facilitate the invention.

实施例1Example 1

图1示出根据本发明一实施例的液晶显示器的亮度调节方法的流程图。如图1所示，该方法主要可以包括步骤S100、步骤S200和步骤S300，下面对各个步骤进行详细说明。1 shows a flow chart of a method of adjusting brightness of a liquid crystal display according to an embodiment of the present invention. As shown in FIG. 1, the method may mainly include step S100, step S200, and step S300, and each step will be described in detail below.

步骤S100、将液晶显示器的显示面板内需要进行灰阶切换的像素确定为待处理像素区。Step S100: determining, in the display panel of the liquid crystal display, a pixel that needs to be switched in gray scale as Pixel area to be processed.

例如，在液晶显示器的显示面板所显示的图像发生变化时，例如显示面板从显示黑色背景切换为显示白色图像，可能出现需要将部分像素的亮度调高的情况，则这部分像素所在的区域为待处理像素区。具体而言，需要将待处理像素区的像素从第一灰阶d1切换到第二灰阶d2的像素，其中，第一灰阶d1可以为较小的值，第二灰阶d2可以为较大的值。For example, when the image displayed on the display panel of the liquid crystal display changes, for example, the display panel switches from displaying a black background to displaying a white image, there may be a case where the brightness of a part of the pixels needs to be increased, and the area where the part of the pixel is located is Pixel area to be processed. Specifically, the pixels of the pixel area to be processed are switched from the first gray level d1 to the pixels of the second gray level d2, wherein the first gray level d1 may be a smaller value, and the second gray level d2 may be a comparison. Big value.

步骤S200、根据显示面板中的像素与背光源中的背光区域的对应关系，将背光源中与待处理像素区对应的背光区域确定为待调光区域。Step S200: Determine, according to the correspondence between the pixels in the display panel and the backlight area in the backlight, the backlight area corresponding to the pixel area to be processed in the backlight as the to-be-dimmed area.

在一种可能的实现方式中，可以预先将背光源划分出如图3所示的9个背光区域。并且，可以将显示面板的各个像素在显示面板中的位置与各个背光区域在背光源中的位置的对应关系存储在对应关系表中；也可以预先将显示面板的各个像素的编号与各个背光区域的编号的对应关系存储在对应关系表中。这样，通过查找上述对应关系表，能够在背光源中确定与待处理像素区对应的背光区域。In a possible implementation, the backlight may be divided into nine backlight regions as shown in FIG. 3 in advance. Moreover, the correspondence between the position of each pixel of the display panel in the display panel and the position of each backlight region in the backlight may be stored in the correspondence table; or the number of each pixel of the display panel and each backlight region may be preliminarily The corresponding relationship of the number is stored in the correspondence table. In this way, by looking up the above correspondence table, it is possible to determine a backlight region corresponding to the pixel region to be processed in the backlight.

步骤S300、在待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据待处理像素区的像素的灰阶值，来调节待调光区域的亮度。Step S300: Adjust the brightness of the to-be-dimmed region according to the grayscale value of the pixel of the pixel region to be processed in the liquid crystal deflection period in which the pixels of the pixel region to be processed perform grayscale switching.

在一种可能的实现方式中，上述液晶偏转周期为待处理像素区的像素完成从第一灰阶d1切换到第二灰阶d2所经过的时间。在一种可能的实现方式中，背光源可以包括大量的发光元件，例如由LED(Light Emitting Diode，发光二极管)点阵组成直下式背光源等，通过改变这些发光元件的亮度，来调节背光源的亮度。当然，本领域技术人员应能理解，点阵式LED光源仅是一种示例，还可以是其它形式，可以根据实际应用来灵活选择。In a possible implementation manner, the liquid crystal deflection period is a time period after the pixel of the pixel region to be processed completes switching from the first gray scale d1 to the second gray scale d2. In a possible implementation manner, the backlight may include a plurality of light-emitting elements, such as a direct-lit backlight composed of an LED (Light Emitting Diode) array, and the backlight is adjusted by changing the brightness of the light-emitting elements. Brightness. Of course, those skilled in the art should understand that the dot matrix LED light source is only an example, and may be other forms, which can be flexibly selected according to practical applications.

这样，根据本发明上述实施例的亮度调节方法在需要进行灰阶切换的像素进行灰阶切换的液晶偏转周期内，始终根据这些像素的灰阶值，来调节相对应的背光区域的亮度。因此，根据本发明上述实施例的亮度调节方法能够实现对背光源中相关背光区域的动态补偿，从而减轻了液晶显示中的拖尾现象，使得显示面板上最终表现出来的亮度更趋于一致，达到了更好的运动显示效果。Thus, the brightness adjustment method according to the above-described embodiment of the present invention adjusts the brightness of the corresponding backlight region according to the grayscale values of the pixels in the liquid crystal deflection period in which the grayscale switching of the pixels is required. Therefore, the brightness adjustment method according to the above embodiment of the present invention can The dynamic compensation of the relevant backlight area in the backlight is realized, thereby reducing the tailing phenomenon in the liquid crystal display, so that the brightness finally displayed on the display panel is more consistent, and a better motion display effect is achieved.

实施例2Example 2

图2示出根据本发明另一实施例的液晶显示器的亮度调节方法的流程图。如图2所示，图2所示的亮度调节方法与图1所示亮度调节方法的主要区别在于，图1所示的亮度调节方法主要包括步骤S100、步骤S200和步骤S300，而图2所示的亮度调节方法则主要包括步骤S100、步骤S200、步骤S310和步骤S320。图2中标号与图1相同的步骤即步骤S100和步骤S200具有相同的功能，为简明起见，省略对这两个步骤的详细说明，而主要对步骤S310和步骤S320进行详细说明。2 is a flow chart showing a method of adjusting the brightness of a liquid crystal display according to another embodiment of the present invention. As shown in FIG. 2, the main difference between the brightness adjustment method shown in FIG. 2 and the brightness adjustment method shown in FIG. 1 is that the brightness adjustment method shown in FIG. 1 mainly includes step S100, step S200, and step S300, and FIG. 2 The brightness adjustment method shown mainly includes step S100, step S200, step S310, and step S320. Steps S100 and S200 in FIG. 2 having the same steps as those in FIG. 1 have the same functions. For the sake of brevity, a detailed description of these two steps will be omitted, and step S310 and step S320 will be mainly described in detail.

在步骤S200之后执行步骤S310、根据显示面板中的像素与背光源中的背光区域的对应关系，将显示面板中与待调光区域对应的显示区域确定为待处理显示区域。After the step S200, the step S310 is performed to determine, according to the correspondence between the pixels in the display panel and the backlight area in the backlight, the display area corresponding to the to-be-dimmed area in the display panel as the to-be-processed display area.

在这种实现方式中，可以将显示面板也划分为多个显示区域，其中，各个显示区域与背光源所划分出的各个背光区域相对应。也即，如图3所示，将背光源划分为9个背光区域的情况下，将显示面板也划分为与这9个背光区域相对应的9个显示区域。In this implementation, the display panel can also be divided into a plurality of display areas, wherein each display area corresponds to each backlight area defined by the backlight. That is, as shown in FIG. 3, when the backlight is divided into nine backlight regions, the display panel is also divided into nine display regions corresponding to the nine backlight regions.

因此，与在实施例1中所述的在步骤S200中预先存储显示面板中的像素与背光源中的背光区域的对应关系类似，在本实施方式中，可以预先将各个显示区域在显示面板中的位置与各个背光区域在背光源中的位置的对应关系存储在对应关系表中；也可以预先将各个显示区域的编号与各个背光区域的编号的对应关系存储在对应关系表中。这样，通过查找上述对应关系表，能够在显示面板中确定与待调光区域对应的显示区域。Therefore, similar to the correspondence relationship between the pixels in the display panel and the backlight regions in the backlight are stored in advance in step S200 as described in Embodiment 1, in the present embodiment, each display region may be previously displayed in the display panel. The correspondence between the position of each backlight region and the position of each backlight region in the backlight is stored in the correspondence table; the correspondence between the number of each display region and the number of each backlight region may be stored in the correspondence table in advance. In this way, by looking up the correspondence table described above, the display area corresponding to the area to be dimmed can be determined in the display panel.

然后执行步骤S320、根据在步骤S310中所确定的待处理显示区域的像素的灰阶值，来调节待调光区域的亮度。Then executing step S320, according to the pixel of the to-be-processed display area determined in step S310 The grayscale value to adjust the brightness of the area to be dimmed.

在本实施例中，将显示面板也进行划分为多个显示区域，并根据显示面板中与待调光区域相对应的显示区域(即上述的待处理显示区域)的像素灰阶值来调节待调光区域的亮度。In this embodiment, the display panel is also divided into a plurality of display areas, and is adjusted according to the pixel grayscale value of the display area corresponding to the to-be-dimmed area (ie, the to-be-processed display area) in the display panel. The brightness of the dimming area.

因此，在一种可能的实现方式中，待处理显示区域中的像素并不一定全部是需要进行灰阶切换的像素，可能存在不需要进行灰阶切换的像素。考虑到待处理显示区域中这些不需要进行灰阶切换的像素，调节待调光区域的亮度所用到的待处理显示区域的像素的灰阶值可以为，待处理显示区域内的所有像素的最大灰阶值，或者所有像素的平均灰阶值，或者部分像素的平均灰阶值。其中，部分像素例如可以是在待处理显示区域中关注度较高的像素或者是对显示面板的显示效果影响较大的像素，当然部分像素也可以是需要进行灰阶切换的像素。Therefore, in a possible implementation manner, the pixels in the display area to be processed are not necessarily all pixels that need to perform gray scale switching, and there may be pixels that do not need to perform gray scale switching. Considering the pixels in the to-be-processed display area that do not need to perform grayscale switching, the grayscale value of the pixel of the to-be-processed display area used for adjusting the brightness of the to-be-dimmed area may be the maximum of all pixels in the to-be-processed display area. Grayscale value, or the average grayscale value of all pixels, or the average grayscale value of a partial pixel. For example, a part of the pixels may be pixels with higher degree of interest in the display area to be processed or pixels that have a greater influence on the display effect of the display panel. Of course, some of the pixels may also be pixels that need to perform gray scale switching.

需要说明的是，也可以不对显示面板进行划分，在这种实现方式中，根据待处理像素区的像素的灰阶值来调节待调光区域的亮度。其中，调节待调光区域的亮度所用到的待处理像素区的像素的灰阶值可以为，待处理像素区内的所有像素的最大灰阶值，或者所有像素的平均灰阶值，或者部分像素的平均灰阶值。与上述对显示面板进行与背光源的各个背光区域相对应地划分的示例类似地，部分像素例如可以是在待处理像素区中关注度较高的像素或者是对显示面板的显示效果影响较大的像素。It should be noted that the display panel may not be divided. In this implementation, the brightness of the to-be-dimmed region is adjusted according to the grayscale value of the pixel of the pixel region to be processed. The grayscale value of the pixel of the pixel area to be processed used to adjust the brightness of the to-be-dimmed area may be the maximum grayscale value of all pixels in the pixel area to be processed, or the average grayscale value of all pixels, or part of The average grayscale value of the pixel. Similar to the above-described example in which the display panel is divided corresponding to the respective backlight regions of the backlight, the partial pixels may be, for example, pixels with higher degree of interest in the pixel region to be processed or have a greater influence on the display effect of the display panel. Pixels.

与实施例1同样地，根据本发明上述实施例的亮度调节方法在需要进行灰阶切换的像素进行灰阶切换的液晶偏转周期内，也始终根据这些像素的灰阶值，来调节相对应的背光区域的亮度。因此，根据本发明上述实施例的亮度调节方法能够实现与实施例1同样的有益效果，即能够实现对背光源中相关背光区域的动态补偿，从而减轻了液晶显示中的拖尾现象，使得显示面板上最终表现出来的亮度更趋于一致，达到了更好的运动显示效果。 In the same manner as in the first embodiment, the brightness adjustment method according to the above-described embodiment of the present invention always adjusts the corresponding gray scale values of the pixels in the liquid crystal deflection period in which the gray scale switching is performed. The brightness of the backlight area. Therefore, the brightness adjustment method according to the above-described embodiment of the present invention can achieve the same advantageous effects as Embodiment 1, that is, dynamic compensation of the relevant backlight region in the backlight can be realized, thereby reducing the tailing phenomenon in the liquid crystal display, so that the display is performed. The final brightness on the panel is more consistent, achieving a better motion display.

实施例3Example 3

图4示出根据本发明又一实施例的液晶显示器的亮度调节方法的流程图。如图4所示，图4所示的亮度调节方法是图1所示亮度调节方法的一种可能的具体实现。图4中标号与图1相同的步骤即步骤S100和步骤S200具有相同的功能，为简明起见，省略对这两个步骤的详细说明，而主要对步骤S311和步骤S321进行详细说明。4 is a flow chart showing a method of adjusting a brightness of a liquid crystal display according to still another embodiment of the present invention. As shown in FIG. 4, the brightness adjustment method shown in FIG. 4 is one possible specific implementation of the brightness adjustment method shown in FIG. 1. Steps S100 and S200 in FIG. 4 having the same steps as those in FIG. 1 have the same functions. For the sake of brevity, a detailed description of these two steps will be omitted, and step S311 and step S321 will be mainly described in detail.

如图4所示，在一种可能的实现方式中，步骤S300可以包括：步骤S311、采用式1，来计算待调光区域在t时刻的亮度值，As shown in FIG. 4, in a possible implementation manner, step S300 may include: Step S311, using Equation 1, to calculate a luminance value of the to-be-dimmed region at time t,

其中，A(t)是待调光区域在t时刻的亮度值，A_max是待调光区域的最大亮度值，a为预设的固定值，T为液晶偏转周期，在对显示面板进行与背光源的各个背光区域相对应地划分的情况下，B(t)是待处理显示区域的像素在t时刻的灰阶值，在不对显示面板进行划分的情况下，B(t)是待处理像素区的像素在t时刻的灰阶值；以及Where A(t) is the brightness value of the to-be-dimmed area at time t, _Amax is the maximum brightness value of the area to be dimmed, a is a preset fixed value, and T is the liquid crystal deflection period, and is performed on the display panel. In the case where the respective backlight regions of the backlight are correspondingly divided, B(t) is the grayscale value of the pixel of the to-be-processed display region at time t, and B(t) is to be processed without dividing the display panel. The grayscale value of the pixel of the pixel region at time t;

步骤S321、根据待调光区域在t时刻的亮度值，来调节待调光区域在t时刻的亮度。Step S321: Adjust the brightness of the to-be-dimmed area at time t according to the brightness value of the to-be-dimmed area at time t.

下面参考图5a、图5b、图5c和图6来进一步说明本实施例的亮度调节方法。在本实施方式中，为了进一步提高液晶显示面板对所要显示影像数据的显示响应速度，还采用了过驱动(英文：over driving)技术来加速液晶分子的转动。所谓过驱动技术，是指在对显示面板中的液晶分子驱动的初始阶段施加比使得液晶分子达到目标状态的目标激励更高的激励，待液晶分子接近于目标状态时，激励恢复为目标激励。The brightness adjustment method of the present embodiment will be further described below with reference to Figs. 5a, 5b, 5c and 6. In the present embodiment, in order to further improve the display response speed of the liquid crystal display panel to the image data to be displayed, an overdrive technique is also employed to accelerate the rotation of the liquid crystal molecules. The overdrive technique refers to applying a higher excitation to the target excitation of the liquid crystal molecules in the initial stage of driving the liquid crystal molecules in the display panel, and the excitation is restored to the target excitation when the liquid crystal molecules are close to the target state.

下面参考图5a、图5b和图5c详细说明本实施方式所采用的过驱动技术。如图5a所示，在普通驱动的情况下，像素的灰阶由第一灰阶d1切换到第二灰阶d2时，需要t1到t4三个时间周期。如图5b所示，同样在普通驱动的情况下，灰阶由第一灰阶d1切换到比第二灰阶d2大的第三灰阶d3时，也需要t1到t4三个时间周期，但是，在t2时刻像素的灰阶就达到了第二灰阶d2，显示面板的亮度即达到了与第二灰阶d2相对应的亮度I2。因此，可以采用图5c所示的方法，在t1到t2的时间周期内施加与第三灰阶d3相对应的激励，在t2到t4的时间周期内施加与第二灰阶d2相对应的激励，则可以使像素在一个时间周期内从第一灰阶d1切换到第二灰阶d2，显示面板的亮度则在一个时间周期内从与第一灰阶d1相对应的亮度I1切换到与第二灰阶d2相对应的亮度I2，从而提高了画面的响应速度。The overdrive technique employed in the present embodiment will be described in detail below with reference to FIGS. 5a, 5b, and 5c. As shown in FIG. 5a, in the case of normal driving, when the gray scale of the pixel is switched from the first gray scale d1 to the second gray scale d2, three time periods from t1 to t4 are required. As shown in FIG. 5b, also in the case of ordinary driving, when the gray scale is switched from the first gray scale d1 to the third gray scale d3 larger than the second gray scale d2, three time periods from t1 to t4 are also required, but At t2, the gray level of the pixel reaches the second gray level d2, and the brightness of the display panel reaches the brightness I2 corresponding to the second gray level d2. Therefore, the excitation corresponding to the third gray scale d3 is applied in the time period from t1 to t2, and the excitation corresponding to the second gray scale d2 is applied in the time period from t2 to t4, using the method shown in FIG. 5c. , the pixel can be switched from the first gray level d1 to the second gray level d2 in one time period, and the brightness of the display panel is switched from the brightness I1 corresponding to the first gray level d1 to the first time in one time period. The gray level d2 corresponds to the brightness I2, thereby improving the response speed of the picture.

采用过驱动技术能够在一定程度上将液晶偏转周期缩短，但是，液晶偏转仍然需要一个时间周期，仍然可能存在拖尾现象。本发明人经反复研究发现，在液晶偏转的初期阶段，像素的灰阶值较小，显示面板的亮度较低，因此，创新性地提出可以在液晶偏转的初期阶段，将背光源的亮度调到最大，之后随着像素的灰阶值升高，显示面板的亮度升高，而逐渐降低背光源的亮度，从而可以使得显示面板最终表现出来的亮度更趋于一致。The use of overdrive technology can shorten the liquid crystal deflection period to a certain extent, but the liquid crystal deflection still requires a time period, and there may still be a tailing phenomenon. The inventors have found through repeated studies that in the initial stage of liquid crystal deflection, the grayscale value of the pixel is small, and the brightness of the display panel is low. Therefore, it is innovatively proposed that the brightness of the backlight can be adjusted in the initial stage of liquid crystal deflection. To the maximum, then as the grayscale value of the pixel increases, the brightness of the display panel increases, and the brightness of the backlight is gradually reduced, so that the brightness finally exhibited by the display panel is more uniform.

下面参考图6详细说明根据本发明实施例所采用的亮度调节原理。首先，需要说明的是，在液晶显示器的显示面板内存在需要灰阶切换的像素(即存在上述待处理像素区)的情况下，由于像素的灰阶切换，使得显示面板中相对应的显示区域的亮度发生变化。以上述待处理像素区的像素需要从第一灰阶d1切换到第二灰阶d2为例，其中，第一灰阶d1可以为较小的值、例如最小值，第二灰阶d2可以为较大的值、例如最大值。在这种情况下，液晶显示器的显示面板中与待处理像素区相对应的显示区域要从较低的亮度切换到较高的亮度。The principle of brightness adjustment employed in accordance with an embodiment of the present invention is described in detail below with reference to FIG. First, it should be noted that, in the case where a pixel requiring grayscale switching exists in the display panel of the liquid crystal display (that is, the pixel area to be processed exists), the corresponding display area in the display panel is caused by the grayscale switching of the pixel. The brightness changes. For example, the pixel of the pixel area to be processed needs to be switched from the first gray level d1 to the second gray level d2, wherein the first gray level d1 may be a smaller value, such as a minimum value, and the second gray level d2 may be Larger values, such as maximum values. In this case, the display area corresponding to the pixel area to be processed in the display panel of the liquid crystal display is switched from lower brightness to higher brightness.

如图6所示，横坐标t表示时间，竖坐标I表示显示面板的亮度。由于显示面板内部的液晶分子固有的物理特性，液晶分子的偏转需要一定的时间，因此，像素完成灰阶切换也需要一定的时间。在图6中，可以将t1至t3的时间段看作为液晶偏转周期，即待处理像素区的像素完成从第一灰阶d1切换到第二灰阶d2所经过的时间。As shown in FIG. 6, the abscissa t represents time, and the vertical coordinate I represents the brightness of the display panel. Due to display The inherent physical properties of the liquid crystal molecules inside the panel require a certain period of time for the deflection of the liquid crystal molecules. Therefore, it takes a certain time for the pixels to complete the gray scale switching. In FIG. 6, the period of time t1 to t3 can be regarded as the liquid crystal deflection period, that is, the time elapsed since the pixel of the pixel region to be processed completes switching from the first gray scale d1 to the second gray scale d2.

从图6能够看出，在液晶偏转周期的初期，像素的灰阶值较小，显示面板的亮度较低，因此，先将相对应的背光区域的亮度调到最大，之后随着像素的灰阶值逐渐变大，显示面板的亮度升高，再使得相对应的背光区域的亮度逐渐降低。It can be seen from FIG. 6 that in the initial stage of the liquid crystal deflection period, the grayscale value of the pixel is small, and the brightness of the display panel is low. Therefore, the brightness of the corresponding backlight area is first adjusted to the maximum, and then the gray of the pixel is followed. As the step value becomes larger, the brightness of the display panel increases, and the brightness of the corresponding backlight area is gradually lowered.

在一种可能的实现方式中，如上述式1所示出的，在液晶偏转周期的初始时刻(即t＝0的时刻)，将待调光区域的亮度值设为最大值A_max，之后的时间段内(即0<t≤T的时间段内)，根据待处理显示区域(或者待处理像素区)的像素的灰阶值与待调光区域的亮度值的乘积为常数，来设置待调光区域的亮度值，从而调节待调光区域的亮度。In a possible implementation manner, as shown in the above formula 1, at the initial moment of the liquid crystal deflection period (ie, the time t=0), the luminance value of the to-be-dimmed region is set to the maximum value A _max , after Within the time period (ie, within a time period of 0<t≤T), the product of the grayscale value of the pixel of the to-be-processed display area (or the pixel area to be processed) and the luminance value of the to-be-dimmed area is set to be constant. The brightness value of the area to be dimmed, thereby adjusting the brightness of the area to be dimmed.

根据本发明上述实施例的亮度调节方法根据待处理显示区域的像素的灰阶值或者待处理像素区的像素的灰阶值，来对背光源中相关背光区域进行动态补偿，从而也能够实现与实施例1和2同样的有益效果，即减轻液晶显示中的拖尾现象，使得显示面板上最终表现出来的亮度更趋于一致，达到更好的运动显示效果。The brightness adjustment method according to the above embodiment of the present invention dynamically compensates the relevant backlight area in the backlight according to the grayscale value of the pixel of the display area to be processed or the grayscale value of the pixel of the pixel area to be processed, thereby also achieving The same advantageous effects of

Embodiments

1 and 2 are to alleviate the tailing phenomenon in the liquid crystal display, so that the brightness finally exhibited on the display panel is more uniform, and a better motion display effect is achieved.

比较例Comparative example

作为本发明的比较例，下面说明在液晶显示技术中普遍采用的区域调光(英文：Local Dimming)技术，该技术也将背光源划分成许多小的区域，根据所要显示的影像数据中的亮度分布来相应地调整背光区域的亮度，从而实现节能、提升对比度的效果。在这种情况下，在需要显示较亮的影像数据时，由于显示面板的亮度将要升高，所以提高相对应的背光区域的亮度，而在需要显示较暗的影像数据时，由于显示面板的亮度将要降低，所以降低相对应的背光区域的亮度。As a comparative example of the present invention, a local dimming technique commonly used in liquid crystal display technology will be described below, which also divides the backlight into a plurality of small areas according to the brightness in the image data to be displayed. The distribution adjusts the brightness of the backlight area accordingly, thereby achieving energy saving and contrast enhancement. In this case, when it is required to display brighter image data, since the brightness of the display panel is to be increased, the brightness of the corresponding backlight area is increased, and when it is required to display dark image data, due to the display panel The brightness will be reduced, so lower the phase The brightness of the corresponding backlight area.

具体地，以黑色背景下有一个白色方块从左到右移动为例，假设背光源的最高亮度为BL_max，显示屏Gamma记为r，黑色背景的灰阶为0，白色方块的灰阶为G₁(0<G₁<255)。在白色方块从与图3所示的背光区域4相对应的显示区域向与图3所示的背光区域5相对应的显示区域很快地移动的情况下，背光区域5处的背光亮度会在某一瞬间由暗变亮，显示面板中与白色方块相对应的显示区域的像素灰阶也会发生变化。显示面板与白色方块相对应的显示区域的像素灰阶值以及背光区域5处的亮度值可以通过下示的式2-1、式2-2和式2-3来计算。Specifically, a black square has a white square moving from left to right as an example, assuming that the highest brightness of the backlight is BL _max , the display Gamma is denoted by r, the gray background of the black background is 0, and the gray scale of the white square is G ₁ (0<G ₁ <255). In the case where the white square is moved from the display area corresponding to the backlight area 4 shown in FIG. 3 to the display area corresponding to the backlight area 5 shown in FIG. 3, the backlight brightness at the backlight area 5 is A certain moment is changed from dark to dark, and the gray level of the pixel in the display area corresponding to the white square in the display panel also changes. The pixel grayscale value of the display area corresponding to the white square of the display panel and the luminance value at the backlight area 5 can be calculated by Equation 2-1, Equation 2-2, and Equation 2-3 shown below.

如式2-1所示，可以适当提高显示面板中与白色方块相对应的显示区域的像素灰阶值，例如设为255，则相对应的背光区域5处的背光亮度的目标值可以从BL_max降低为BL₂，即、在显示面板中的显示区域从显示黑色背景切换为显示白色方块的情况下，需要将相对应的背光区域5处的背光亮度从与最低的亮度值相对应的亮度切换为与亮度值为BL₂相对应的亮度，而不是从与最低的亮度值相对应的亮度切换为与亮度值为BL_max相对应的亮度，以此达到降低功耗的目的。在白色方块的灰阶G₁远小于255的情况下，为了不出现明显的品味问题，可以将显示面板中与白色方块相对应的显示区域的像素灰阶值略提高至一可接受值G₂，此时可以通过式2-2和式2-3来计算相对应的背光区域5处的背光亮度的目标值BL₂。As shown in the formula 2-1, the pixel grayscale value of the display area corresponding to the white square in the display panel can be appropriately increased, for example, set to 255, and the target value of the backlight luminance at the corresponding backlight area 5 can be from the BL. _{Max is} reduced to BL ₂ , that is, in the case where the display area in the display panel is switched from displaying the black background to displaying the white square, it is necessary to adjust the backlight brightness at the corresponding backlight area 5 from the brightness corresponding to the lowest brightness value. Switching to the brightness corresponding to the brightness value BL ₂ instead of switching from the brightness corresponding to the lowest brightness value to the brightness corresponding to the brightness value BL _max , thereby achieving the purpose of reducing power consumption. In the case where the gray scale G _{1 of the} white square is much smaller than 255, in order not to cause a significant taste problem, the pixel gray scale value of the display area corresponding to the white square in the display panel may be slightly increased to an acceptable value G _{2 .} At this time, the target value BL ₂ of the backlight luminance at the corresponding backlight region 5 can be calculated by Equation 2-2 and Equation 2-3.

然而，由于背光亮度的切换速度是极快的，并且现有的这种区域调光方式直接将背光亮度值从起始值切换为目标值，因此，在背光区域的亮度能够在一瞬间从起始亮度变为目标亮度。但是，像素灰阶的切换需要一段时间，因此，即使采用过驱动技术，也依然存在因像素的灰阶切换速度较慢而出现拖尾现象。However, since the switching speed of the backlight brightness is extremely fast, and the existing area dimming side The formula directly switches the backlight luminance value from the initial value to the target value, so that the luminance in the backlight region can be changed from the initial luminance to the target luminance in an instant. However, the switching of the gray scale of the pixel takes a while, so even if the overdrive technique is used, there is still a tailing phenomenon due to the slow switching speed of the gray scale of the pixel.

与上述比较例中所采用的区域调光方式完全不同，本发明人提出一种全新的亮度调节方法(可能的具体实现方式可以参见实施例1-3)，根据待处理显示区域的像素的灰阶值或者待处理像素区的像素的灰阶值，来对背光源中相关背光区域进行动态补偿，从而减轻了液晶显示中的拖尾现象，使得显示面板上最终表现出来的亮度更趋于一致，实现了更好的运动显示效果。The inventor proposes a completely new method for adjusting the brightness according to the area dimming method used in the above comparative example. (For possible specific implementations, refer to Embodiment 1-3), according to the gray of the pixel of the display area to be processed. The step value or the grayscale value of the pixel of the pixel area to be processed to dynamically compensate the relevant backlight area in the backlight, thereby reducing the tailing phenomenon in the liquid crystal display, so that the brightness finally displayed on the display panel is more uniform , to achieve a better motion display.

另外，需要说明的是，本发明的亮度调节方法不仅可以用于针对一个背光区域进行的亮度调节，在待处理像素与两个或以上的背光区域相对应的情况下，还可以用于针对这两个或以上的背光区域进行亮度调节。In addition, it should be noted that the brightness adjustment method of the present invention can be used not only for brightness adjustment for one backlight region, but also for the case where the pixel to be processed corresponds to two or more backlight regions. Two or more backlight areas are used for brightness adjustment.

例如，在要发生灰阶切换的像素对应于如图3所示的背光区域5的情况下，针对背光区域5进行亮度调节，而在要发生灰阶切换的像素对应于背光区域4和5的情况下，要针对背光区域4和5进行亮度调节。For example, in the case where the pixel to which the gray scale switching is to occur corresponds to the backlight region 5 as shown in FIG. 3, the brightness adjustment is performed for the backlight region 5, and the pixels at which the grayscale switching is to occur correspond to the backlight regions 4 and 5 In the case, the brightness adjustment is performed for the backlight areas 4 and 5.

但是，本领域技术人员应能理解，无论针对几个背光区域进行亮度调节，只要采用本发明上述任一实施方式所述的亮度调节方法，分别针对各个背光区域，根据与该背光区域所对应的显示区域中的像素的灰阶值或者该背光区域所对应的待处理像素的灰阶值，来对该背光区域进行动态补偿，都能够减轻液晶显示中的拖尾现象，并使得显示面板上最终表现出来的亮度更趋于一致，从而实现更好的运动显示效果。However, those skilled in the art should understand that regardless of the brightness adjustment for several backlight regions, the brightness adjustment method according to any of the above embodiments of the present invention is used for each backlight region according to the backlight region. The grayscale value of the pixel in the display area or the grayscale value of the pixel to be processed corresponding to the backlight area, to dynamically compensate the backlight area, can alleviate the tailing phenomenon in the liquid crystal display, and finally make the display panel finally The brightness is more consistent, resulting in better motion display.

实施例4Example 4

图7示出根据本发明一实施例的液晶显示器的亮度调节装置的框图。如图7所示，该装置主要包括：第一确定模块410，被配置为将液晶显示器的显示面板内需要进行灰阶切换的像素确定为待处理像素区；第二确定模块420，与第一确定模块410连接，被配置为根据显示面板中的像素与背光源中的背光区域的对应关系，将背光源中与待处理像素区对应的背光区域确定为待调光区域；以及调节模块430，与第一确定模块410和第二确定模块420均连接，被配置为在待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据待处理像素区的像素的灰阶值，来调节待调光区域的亮度。FIG. 7 is a block diagram showing a brightness adjusting device of a liquid crystal display according to an embodiment of the present invention. As shown in FIG. 7 , the device mainly includes: a first determining module 410 configured to determine, in a display panel of the liquid crystal display, a pixel that needs to be gray-scale switched as a pixel area to be processed; and a second determining module 420, Connected to the first determining module 410, configured to determine, as a to-be-dimmed region, a backlight region corresponding to the pixel region to be processed in the backlight according to a correspondence between the pixels in the display panel and the backlight region in the backlight; and adjusting The module 430 is connected to both the first determining module 410 and the second determining module 420, and configured to, according to the grayscale value of the pixel of the pixel region to be processed, in the liquid crystal deflection period in which the pixels of the pixel region to be processed perform grayscale switching, To adjust the brightness of the area to be dimmed.

其中，第一确定模块410、第二确定模块420和调节模块430的实现机理可具体参照实施例1中对步骤S100、步骤S200和步骤S300的说明。并且，明显可见，根据本发明上述实施例的亮度调节装置能够实现与实施例1中所述方法相同的有益效果，即能够实现对背光源中相关背光区域的动态补偿，从而减轻了液晶显示中的拖尾现象，使得显示面板上最终表现出来的亮度更趋于一致，达到了更好的运动显示效果。The implementation mechanism of the first determining module 410, the second determining module 420, and the adjusting module 430 may be specifically referred to the description of step S100, step S200, and step S300 in the first embodiment. Moreover, it is apparent that the brightness adjusting device according to the above-described embodiment of the present invention can achieve the same advantageous effects as the method described in Embodiment 1, that is, dynamic compensation of the relevant backlight region in the backlight can be realized, thereby reducing the liquid crystal display. The tailing phenomenon makes the brightness of the final display on the display panel more consistent, achieving a better motion display effect.

在一种可能的实现方式中，在本发明上述实施例的亮度调节装置中，待处理像素区的像素的灰阶值可以包括待处理像素区内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。In a possible implementation manner, in the brightness adjusting device of the foregoing embodiment of the present invention, the grayscale value of the pixel of the pixel region to be processed may include the maximum grayscale value of all pixels in the pixel region to be processed, and all pixels Any one of the average grayscale value and the average grayscale value of a part of the pixels.

在一种可能的实现方式中，在本发明上述实施例的亮度调节装置中，第二确定模块420还可以被配置为，根据显示面板中的像素与背光源中的背光区域的对应关系，将显示面板中与待调光区域对应的显示区域确定为待处理显示区域；调节模块430还可以被配置为，根据第二确定模块420确定出的待处理显示区域的像素的灰阶值，来调节待调光区域的亮度，其中，待处理显示区域的像素的灰阶值包括待处理显示区域内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。In a possible implementation manner, in the brightness adjustment device of the foregoing embodiment of the present invention, the second determining module 420 may be further configured to: according to the correspondence between the pixels in the display panel and the backlight region in the backlight, The display area corresponding to the to-be-dimmed area in the display panel is determined as the to-be-processed display area; the adjustment module 430 is further configured to adjust according to the grayscale value of the pixel of the to-be-processed display area determined by the second determining module 420. The brightness of the dimming area, wherein the grayscale value of the pixel of the to-be-processed display area includes the maximum grayscale value of all pixels in the to-be-processed display area, the average grayscale value of all pixels, and the average grayscale value of the partial pixels. Any of them.

其中，上述实现方式的第二确定模块420和调节模块430的实现机理可具体参照实施例2中对步骤S310和步骤S320的说明。并且，明显可见，根据本发明上述实现方式的亮度调节装置能够实现与实施例2中所述方法相同的有益效果。 For the implementation mechanism of the second determining module 420 and the adjusting module 430 of the foregoing implementation, refer to the description of step S310 and step S320 in Embodiment 2. Moreover, it is apparent that the brightness adjusting device according to the above-described implementation of the present invention can achieve the same advantageous effects as the method described in Embodiment 2.

在一种可能的实现方式中，本发明上述实施例的亮度调节装置还可以包括计算模块440，其中，计算模块440与第一确定模块410、第二确定模块420和调节模块430均连接，并且被配置为采用式1，来计算待调光区域在t时刻的亮度值，In a possible implementation manner, the brightness adjustment apparatus of the foregoing embodiment of the present invention may further include a calculation module 440, wherein the calculation module 440 is connected to the first determination module 410, the second determination module 420, and the adjustment module 430, and Is configured to use Equation 1 to calculate the luminance value of the to-be-dimmed region at time t,

其中，A(t)是待调光区域在t时刻的亮度值，B(t)是待处理像素区的像素在t时刻的灰阶值，A_max是待调光区域的最大亮度值，a为预设的固定值，T为液晶偏转周期；Where A(t) is the luminance value of the to-be-dimmed region at time t, B(t) is the grayscale value of the pixel of the pixel region to be processed at time t, and _Amax is the maximum luminance value of the to-be-dimmed region, a For a preset fixed value, T is the liquid crystal deflection period;

调节模块430还可以被配置为，根据计算模块440计算出的待调光区域在t时刻的亮度值，来调节待调光区域在t时刻的亮度。The adjustment module 430 can also be configured to adjust the brightness of the to-be-dimmed region at time t according to the brightness value of the to-be-dimmed region to be calculated by the calculation module 440.

上述实现方式的计算模块440和调节模块430的实现机理可具体参照实施例3中对步骤S311和步骤S321的说明。并且，明显可见，根据本发明上述实现方式的亮度调节装置能够实现与实施例3中所述方法相同的有益效果。For the implementation mechanism of the calculation module 440 and the adjustment module 430 of the above implementation, the description of step S311 and step S321 in Embodiment 3 can be specifically referred to. Moreover, it is apparent that the brightness adjusting device according to the above-described implementation of the present invention can achieve the same advantageous effects as the method described in Embodiment 3.

本发明还提供一种液晶显示器的实施例，根据该实施例的液晶显示器包括：显示面板，包括多个像素；背光源，被划分为多个背光区域；以及根据上述任一种实现方式的亮度调节装置，用于在显示面板内存在需要进行灰阶切换的像素的情况下，调节相对应的背光区域的亮度。由于本实施例的液晶显示器包括上述任一种实现方式的亮度调节装置，因此，本实施例的液晶显示器具有与上述任一种实现方式的亮度调节装置所能实现的有益效果相同的有益效果，即能够实现对背光源中相关背光区域的动态补偿，从而减轻了液晶显示中的拖尾现象，使得显示面板上最终表现出来的亮度更趋于一致，达到了更好的运动显示效果。The present invention also provides an embodiment of a liquid crystal display, the liquid crystal display according to the embodiment comprising: a display panel including a plurality of pixels; a backlight divided into a plurality of backlight regions; and brightness according to any of the above implementations The adjusting device is configured to adjust the brightness of the corresponding backlight region in the presence of pixels in the display panel that require grayscale switching. Since the liquid crystal display of the present embodiment includes the brightness adjusting device of any of the above embodiments, the liquid crystal display of the present embodiment has the same advantageous effects as those of the brightness adjusting device of any of the above embodiments. That is, the dynamic compensation of the relevant backlight region in the backlight can be realized, thereby reducing the tailing phenomenon in the liquid crystal display, so that the brightness finally displayed on the display panel is more consistent, and a better motion display effect is achieved.

实施例5Example 5

图8示出根据本发明一实施例的液晶显示器的亮度调节装置的框图。所述液晶显示器的亮度调节装置1100可以是具备计算能力的主机服务器、个人计算机PC、或者可携带的便携式计算机或终端等。本发明具体实施例并不对计算节点的具体实现做限定。FIG. 8 is a block diagram showing a brightness adjusting device of a liquid crystal display according to an embodiment of the present invention. The brightness adjustment device 1100 of the liquid crystal display may be a host server having a computing capability, a personal computer PC, or a portable computer or terminal that can be carried. The specific embodiments of the present invention do not limit the specific implementation of the computing node.

所述液晶显示器的亮度调节装置1100包括处理器(processor)1110、通信接口(Communications Interface)1120、存储器(memory)1130和总线1140。其中，处理器1110、通信接口1120、以及存储器1130通过总线1140完成相互间的通信。The brightness adjustment device 1100 of the liquid crystal display includes a processor 1110, a communication interface 1120, a memory 1130, and a bus 1140. The processor 1110, the communication interface 1120, and the memory 1130 complete communication with each other through the bus 1140.

通信接口1120用于与网络设备通信，其中网络设备包括例如虚拟机管理中心、共享存储等。 Communication interface 1120 is for communicating with network devices, including, for example, a virtual machine management center, shared storage, and the like.

处理器1110用于执行程序。处理器1110可能是一个中央处理器CPU，或者是专用集成电路ASIC(Application Specific Integrated Circuit)，或者是被配置成实施本发明实施例的一个或多个集成电路。The processor 1110 is configured to execute a program. The processor 1110 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.

存储器1130用于存放文件。存储器1130可能包含高速RAM存储器，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。存储器1130也可以是存储器阵列。存储器1130还可能被分块，并且所述块可按一定的规则组合成虚拟卷。The memory 1130 is used to store files. The memory 1130 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory. Memory 1130 can also be a memory array. The memory 1130 may also be partitioned, and the blocks may be combined into a virtual volume according to certain rules.

在一种可能的实施方式中，上述程序可为包括计算机操作指令的程序代码。该程序具体可用于：实现实施例1至实施例3中各步骤的操作。In a possible implementation, the above program may be program code including computer operating instructions. The program can be specifically used to: perform the operations of the steps in Embodiments 1 to 3.

本领域普通技术人员可以意识到，本文所描述的实施例中的各示例性单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件形式来实现，取决于技术方案的特定应用和设计约束条件。专业技术人员可以针对特定的应用选择不同的方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。Those of ordinary skill in the art will appreciate that the various exemplary elements and algorithm steps in the embodiments described herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can select different methods for implementing the described functions for a particular application, but such implementation should not be considered to be beyond the scope of the present invention.

如果以计算机软件的形式来实现所述功能并作为独立的产品销售或使用时，则在一定程度上可认为本发明的技术方案的全部或部分(例如对现有技术做出贡献的部分)是以计算机软件产品的形式体现的。该计算机软件产品通常存储在计算机可读取的非易失性存储介质中，包括若干指令用以使得计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各实施例方法的全部或部分步骤。而前述的存储介质包括U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。If the functionality is implemented in the form of computer software and sold or made as a standalone product When used, it is considered that all or part of the technical solution of the present invention (for example, a part contributing to the prior art) is embodied in the form of a computer software product. The computer software product is typically stored in a computer readable non-volatile storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all of the methods of various embodiments of the present invention. Or part of the steps. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。 The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

一种液晶显示器的亮度调节方法，其特征在于，包括：A method for adjusting brightness of a liquid crystal display, comprising:

将所述液晶显示器的显示面板内需要进行灰阶切换的像素确定为待处理像素区；Determining, in the display panel of the liquid crystal display, a pixel that needs to perform gray scale switching as a pixel area to be processed;

根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述背光源中与所述待处理像素区对应的背光区域确定为待调光区域；以及Determining, according to the correspondence between the pixels in the display panel and the backlight region in the backlight, a backlight region corresponding to the pixel region to be processed in the backlight as a to-be-dimmed region;

在所述待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度。The brightness of the to-be-dimmed region is adjusted according to a grayscale value of a pixel of the pixel region to be processed in a liquid crystal deflection period in which the pixels of the pixel region to be processed perform grayscale switching.
根据权利要求1所述的亮度调节方法，其特征在于，所述待处理像素区的像素的灰阶值包括所述待处理像素区内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。The brightness adjustment method according to claim 1, wherein the grayscale value of the pixel of the pixel region to be processed includes a maximum grayscale value of all pixels in the pixel region to be processed, and an average grayscale value of all pixels. Any of the value and the average grayscale value of a portion of the pixel.
根据权利要求1所述的亮度调节方法，其特征在于，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度包括：The brightness adjustment method according to claim 1, wherein adjusting the brightness of the to-be-dimmed area according to a grayscale value of a pixel of the pixel area to be processed includes:

根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述显示面板中与所述待调光区域对应的显示区域确定为待处理显示区域；以及Determining, according to the correspondence between the pixels in the display panel and the backlight area in the backlight, a display area corresponding to the to-be-dimmed area in the display panel as a to-be-processed display area;

根据所述待处理显示区域的像素的灰阶值，来调节所述待调光区域的亮度，其中，所述待处理显示区域的像素的灰阶值包括所述待处理显示区域内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。Adjusting a brightness of the to-be-dimmed area according to a grayscale value of a pixel of the to-be-processed display area, where a grayscale value of a pixel of the to-be-processed display area includes all pixels in the to-be-processed display area The maximum grayscale value, the average grayscale value of all pixels, and the average grayscale value of some pixels.
根据权利要求1至3中任一项所述的亮度调节方法，其特征在于，在所述待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度，包括：The brightness adjustment method according to any one of claims 1 to 3, wherein, in a liquid crystal deflection period in which the pixels of the pixel region to be processed perform gray scale switching, according to pixels of the pixel region to be processed a grayscale value to adjust the brightness of the to-be-dimmed area, including:

采用式1，来计算所述待调光区域在t时刻的亮度值，Using Equation 1, the brightness value of the to-be-dimmed region at time t is calculated.

其中，A(t)是所述待调光区域在t时刻的亮度值，B(t)是所述待处理像素区的像素在t时刻的灰阶值，A_max是所述待调光区域的最大亮度值，a为预设的固定值，T为所述液晶偏转周期；以及Where A(t) is the luminance value of the to-be-dimmed region at time t, B(t) is the grayscale value of the pixel of the pixel region to be processed at time t, and _Amax is the to-be-dimmed region Maximum brightness value, a is a preset fixed value, and T is the liquid crystal deflection period;

根据所述待调光区域在t时刻的亮度值，来调节所述待调光区域在t时刻的亮度。Adjusting the brightness of the to-be-dimmed region at time t according to the brightness value of the to-be-dimmed region at time t.
一种液晶显示器的亮度调节装置，其特征在于，包括：A brightness adjusting device for a liquid crystal display, comprising:

第一确定模块，被配置为将所述液晶显示器的显示面板内需要进行灰阶切换的像素确定为待处理像素区；a first determining module, configured to determine, in the display panel of the liquid crystal display, a pixel that needs to perform grayscale switching as a pixel area to be processed;

第二确定模块，与所述第一确定模块连接，被配置为根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述背光源中与所述待处理像素区对应的背光区域确定为待调光区域；以及a second determining module, configured to be connected to the first determining module, configured to correspond to the to-be-processed pixel area in the backlight according to a correspondence between a pixel in the display panel and a backlight area in the backlight The backlight area is determined as the area to be dimmed;

调节模块，与所述第一确定模块和所述第二确定模块均连接，被配置为在所述待处理像素区的像素进行灰阶切换的液晶偏转周期内，根据所述待处理像素区的像素的灰阶值，来调节所述待调光区域的亮度。The adjustment module is connected to the first determining module and the second determining module, and is configured to be in a liquid crystal deflection period in which the pixels of the pixel region to be processed perform gray scale switching, according to the pixel area to be processed The gray scale value of the pixel to adjust the brightness of the to-be-dimmed area.
根据权利要求5所述的亮度调节装置，其特征在于，所述待处理像素区的像素的灰阶值包括所述待处理像素区内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。The brightness adjusting device according to claim 5, wherein the grayscale value of the pixel of the pixel region to be processed includes a maximum grayscale value of all pixels in the pixel region to be processed, and an average grayscale of all pixels Any of the value and the average grayscale value of a portion of the pixel.
根据权利要求5所述的亮度调节装置，其特征在于，The brightness adjusting device according to claim 5, wherein

所述第二确定模块还被配置为，根据所述显示面板中的像素与背光源中的背光区域的对应关系，将所述显示面板中与所述待调光区域对应的显示区域确定为待处理显示区域；The second determining module is further configured to determine, according to the correspondence between the pixels in the display panel and the backlight area in the backlight, the display area corresponding to the to-be-dimmed area in the display panel to be determined as Processing the display area;

所述调节模块还被配置为，根据所述第二确定模块确定出的所述待处理显示区域的像素的灰阶值，来调节所述待调光区域的亮度，其中，所述待处理显示区域的像素的灰阶值包括所述待处理显示区域内的所有像素的最大灰阶值、所有像素的平均灰阶值和部分像素的平均灰阶值中的任意一种。 The adjustment module is further configured to adjust the brightness of the to-be-dimmed area according to the grayscale value of the pixel of the to-be-processed display area determined by the second determining module, where the to-be-processed display The grayscale value of the pixel of the region includes any one of a maximum grayscale value of all pixels in the to-be-processed display region, an average grayscale value of all pixels, and an average grayscale value of a partial pixel.
根据权利要求5至7中任一项所述的亮度调节装置，其特征在于，还包括计算模块，The brightness adjusting device according to any one of claims 5 to 7, further comprising a calculation module,

所述计算模块与所述第一确定模块、所述第二确定模块和所述调节模块均连接，被配置为采用式1，来计算所述待调光区域在t时刻的亮度值，The calculation module is connected to the first determining module, the second determining module, and the adjusting module, and is configured to calculate the brightness value of the to-be-dimmed region at time t by using Equation 1.

其中，A(t)是所述待调光区域在t时刻的亮度值，B(t)是所述待处理像素区的像素在t时刻的灰阶值，A_max是所述待调光区域的最大亮度值，a为预设的固定值，T为所述液晶偏转周期；Where A(t) is the luminance value of the to-be-dimmed region at time t, B(t) is the grayscale value of the pixel of the pixel region to be processed at time t, and _Amax is the to-be-dimmed region Maximum brightness value, a is a preset fixed value, and T is the liquid crystal deflection period;

所述调节模块还被配置为，根据所述计算模块计算出的所述待调光区域在t时刻的亮度值，来调节所述待调光区域在t时刻的亮度。The adjustment module is further configured to adjust the brightness of the to-be-dimmed area at time t according to the brightness value of the to-be-dimmed area at time t calculated by the calculation module.
一种液晶显示器，其特征在于，包括：A liquid crystal display, comprising:

显示面板，包括多个像素；a display panel comprising a plurality of pixels;

背光源，被划分为多个背光区域；以及a backlight that is divided into a plurality of backlight regions;

根据权利要求5至8中任一项所述的亮度调节装置，用于在所述显示面板内存在需要进行灰阶切换的像素的情况下，调节相对应的背光区域的亮度。 The brightness adjusting device according to any one of claims 5 to 8, wherein the brightness of the corresponding backlight region is adjusted in the case where pixels of the gray scale switching need to be performed in the display panel.