WO2019010750A1 - 一种图像显示方法及液晶显示装置 - Google Patents

一种图像显示方法及液晶显示装置 Download PDF

Info

Publication number
WO2019010750A1
WO2019010750A1 PCT/CN2017/097863 CN2017097863W WO2019010750A1 WO 2019010750 A1 WO2019010750 A1 WO 2019010750A1 CN 2017097863 W CN2017097863 W CN 2017097863W WO 2019010750 A1 WO2019010750 A1 WO 2019010750A1
Authority
WO
WIPO (PCT)
Prior art keywords
white
grayscale value
image frame
pixel
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
Application number
PCT/CN2017/097863
Other languages
English (en)
French (fr)
Inventor
邢振周
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US15/556,565 priority Critical patent/US20190019464A1/en
Publication of WO2019010750A1 publication Critical patent/WO2019010750A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours

Definitions

  • the present invention relates to the field of liquid crystals, and in particular to an image display method and a liquid crystal display device.
  • RGBW four-primary color display technology adds white pixels to the RGW three primary colors, which can improve the transmittance of the liquid crystal panel.
  • the liquid crystal panel can be reduced by using the sub-pixel sharing algorithm without changing the resolution.
  • the number of pixels realizes the effect of improving the image yield ratio while reducing the high-resolution production yield risk and reducing the backlight power consumption by 40%. Therefore, the RGBW liquid crystal panel has a broad development space in the future.
  • RGBW LCD panels also have an inherent flaw, that is, when the viewing angle is large (view Angle) When viewing, the optical brightness curve does not match gamma 2.2, which is the phenomenon of color shift. And when the viewing angle is larger, the color drift phenomenon is more obvious.
  • FIG. 1 is a gamma curve of a prior art liquid crystal panel at different viewing angles.
  • the gamma value is 2.2.
  • the viewing angle changes from a frontal angle of 0° to a squint angle of 30° and then to a squint angle of 60°, the gamma curve corresponding to different viewing angles deviates from the gamma curve corresponding to the frontal angle of 0°, and the degree of color drift is more serious. More and more obvious.
  • the technical problem to be solved by the present invention is to provide an image display method and a liquid crystal display device capable of improving the phenomenon of color drift.
  • a technical solution adopted by the present invention is to provide an image display method, the method comprising: providing a liquid crystal panel, the liquid crystal panel comprising a plurality of pixel units, each pixel unit comprising four color sub-pixels; Four-color sub-pixel data of each pixel unit of the image frame to be displayed, the four-color sub-pixel data includes a red grayscale value, a green grayscale value, a blue grayscale value, and a white grayscale value; the white grayscale value is according to a predetermined rule.
  • Dividing into a first white gray scale value and a second white gray scale value comprising the first white gray scale value and the second white gray scale value and the corresponding red gray scale value, green gray scale value, and blue gray scale value respectively Forming a first image frame and a second image frame; sequentially outputting the first image frame and the second image frame to the liquid crystal panel; wherein the first white grayscale value is less than the white grayscale value, and the white grayscale value is less than the second a white grayscale value; wherein the update frequency of the first image frame and the second image frame is twice the update frequency of the image frame to be displayed.
  • another technical solution adopted by the present invention is to provide an image display method, the method comprising: providing a liquid crystal panel, the liquid crystal panel comprising a plurality of pixel units, each pixel unit comprising four color sub-pixels; Obtaining four-color sub-pixel data of each pixel unit of the image frame to be displayed, where the four-color sub-pixel data includes a red grayscale value, a green grayscale value, a blue grayscale value, and a white grayscale value; the white grayscale is according to a predetermined rule.
  • the value is divided into a first white gray scale value and a second white gray scale value; the first white gray scale value and the second white gray scale value are respectively corresponding to the corresponding red gray scale value, the green gray scale value, and the blue gray scale value Combining to form a first image frame and a second image frame; sequentially outputting the first image frame and the second image frame to the liquid crystal panel.
  • a liquid crystal display device includes a liquid crystal panel including a plurality of pixel units, each of which includes a four-color sub-pixel.
  • the control circuit is coupled to the liquid crystal panel for acquiring each pixel of the image frame to be displayed.
  • the four-color sub-pixel data of the unit, the four-color sub-pixel data includes a red grayscale value, a green grayscale value, a blue grayscale value, and a white grayscale value, and the white grayscale value is divided into the first white grayscale according to a predetermined rule.
  • the second image frame sequentially outputs the first image frame and the second image frame to the liquid crystal panel.
  • the image display method and the liquid crystal display device of the present invention divide the white grayscale value into the first white grayscale value and the second white grayscale value in the image frame to be displayed, and the first white grayscale The value, the second white grayscale value, and the red grayscale value, the green grayscale value, and the blue grayscale value in the image frame to be displayed are combined to form a first image frame and a second image frame, and the first image frame and the second image frame The image frames are sequentially output to the liquid crystal panel.
  • the present invention can improve the phenomenon of color drift occurring when viewing a liquid crystal panel at a large viewing angle, thereby improving the display quality of the liquid crystal panel.
  • 1 is a gamma curve of a prior art liquid crystal panel at different viewing angles
  • FIG. 2 is a schematic structural view of a liquid crystal display device according to an embodiment of the present invention.
  • FIG. 3 is a comparison diagram of observation curves when the liquid crystal panel is observed at a large viewing angle before and after;
  • FIG. 4 is a flow chart of an image display method according to an embodiment of the present invention.
  • the liquid crystal display device includes a liquid crystal panel 11 and a control circuit 12.
  • the liquid crystal panel 11 includes a plurality of data lines D(N) (N is a natural number), a plurality of scanning lines G(N) (N is a natural number), and a plurality of pixel units 111.
  • Each of the pixel units 111 includes four color sub-pixels 112, wherein the four color sub-pixels 112 are respectively a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B, and a white sub-pixel W, and each sub-pixel 112 is connected to a corresponding one.
  • Data line and one scan line is provided to a corresponding one.
  • the pixel unit 111 of the liquid crystal panel 11 is repeatedly arranged every two rows, wherein the arrangement order of the four color sub-pixels in the first row and the second row of pixel units 111 is reversed.
  • the first row of pixel units 111 are repeatedly arranged in the order of the red sub-pixel R, the green sub-pixel G, the blue sub-pixel B, and the white sub-pixel W, and the second row of pixel units 111 follow the white sub-pixel W,
  • the order of the blue sub-pixel B, the green sub-pixel G, and the red sub-pixel R is repeatedly arranged. It can be understood by those skilled in the art that the ordering of the sub-pixels in this embodiment is only an example, and the invention is not limited thereto.
  • the control circuit 12 is coupled to the liquid crystal panel 11 for acquiring four-color sub-pixel data of each pixel unit of the image frame to be displayed, and the four-color sub-pixel data includes a red grayscale value, a green grayscale value, and a blue grayscale value.
  • a white grayscale value the white grayscale value is divided into a first white grayscale value and a second white grayscale value according to a predetermined rule, and the first white grayscale value and the second white grayscale value are respectively corresponding to the corresponding red grayscale
  • the value, the green grayscale value, and the blue grayscale value are combined to form a first image frame and a second image frame, and the first image frame and the second image frame are sequentially output to the liquid crystal panel 11.
  • the first white gray scale value is smaller than the white gray scale value
  • the white gray scale value is smaller than the second white gray scale value.
  • the sum of the first white grayscale value and the second white grayscale value is equal to twice the white grayscale value. For example, if the white grayscale value of the image frame to be displayed is 127, the first white grayscale value may be 122, and the second white grayscale value may be 132.
  • the white gray scale value of the liquid crystal panel 12 includes 256 gray scales, from 0 to 255, wherein the highest gray scale among the white gray scale values is 255.
  • the operation of sequentially outputting the first image frame and the second image frame to the liquid crystal panel 11 is specifically: the control circuit 12 controls the scan line G(N) to turn on the gate of the transistor of the corresponding sub-pixel 112, and then The first image frame is displayed on the liquid crystal panel 11 by applying the voltage corresponding to the grayscale value of each sub-pixel to the source of the corresponding sub-pixel 112 according to the four-color sub-pixel data control data line D(N) in the first image frame. Then, the above operation is repeated to realize display of the second image frame.
  • the update frequency of the first image frame and the second image frame is twice the update frequency of the image frame to be displayed.
  • the update frequency of the first image frame or the second image frame can be understood as the refresh frequency of the liquid crystal panel. For example, if the update frequency of the image frame to be displayed is 60 Hz, the update frequency of the first image frame and the second image frame is 120 Hz.
  • the image frame to be displayed is divided into two image frames, that is, the first image frame and the second image frame, specifically, by the image frame to be displayed.
  • the white grayscale value in the middle is divided into a first white grayscale value in the first image frame and a second white grayscale value in the second image frame to drive the white subpixel in the liquid crystal panel due to the persistence effect of the human eye vision
  • the liquid crystal molecules are inclined at different display moments of the first image frame and the second image frame due to the change of the voltage driving the white sub-pixel.
  • the angle that is, the different gamma curve characteristics, so the gamma curve of the liquid crystal panel can be improved greatly at a large viewing angle, thereby improving the color drift phenomenon of the liquid crystal panel, and finally improving the display quality of the liquid crystal panel.
  • Fig. 3 is a comparison diagram of observation curves when the liquid crystal panel is observed at a large viewing angle before and after. As shown in FIG. 3, comparing the image frame to be displayed directly to the liquid crystal panel, that is, before the improvement and dividing the image frame to be displayed into the first image frame and the second image frame, and sequentially outputting to the liquid crystal panel, the latter is observed.
  • the observation curve formed by the positive viewing angle brightness and the partial viewing angle brightness is closer to the ideal straight line, that is, it has a better display effect when viewed at a large viewing angle.
  • FIG. 4 is a flow chart of an image display method according to an embodiment of the present invention, which is based on the liquid crystal display device shown in FIG. 2. As shown in FIG. 4, the method includes the steps of:
  • Step S101 Providing a liquid crystal panel, the liquid crystal panel includes a plurality of pixel units, and each of the pixel units includes four color sub-pixels.
  • the pixel unit includes four color sub-pixels, wherein the four color sub-pixels are a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel, respectively.
  • the pixel units of the liquid crystal panel are repeatedly arranged every two rows, wherein the order of the four color sub-pixels in the first row and the second row of pixel cells is reversed.
  • the first row of pixel units are repeatedly arranged in the order of the red sub-pixel R, the green sub-pixel G, the blue sub-pixel B, and the white sub-pixel W, and the second row of pixel units are in accordance with the white sub-pixel W and the blue sub-pixel.
  • the green sub-pixel G and the red sub-pixel R are repeatedly arranged in order.
  • Step S102 Acquire four-color sub-pixel data of each pixel unit of the image frame to be displayed, and the four-color sub-pixel data includes a red grayscale value, a green grayscale value, a blue grayscale value, and a white grayscale value.
  • Step S103 The white grayscale value is divided into a first white grayscale value and a second white grayscale value according to a predetermined rule.
  • step S103 the first white gray scale value is smaller than the white gray scale value, and the white gray scale value is smaller than the second white gray scale value.
  • the sum of the first white grayscale value and the second white grayscale value is equal to twice the white grayscale value.
  • Step S104 Combine the first white grayscale value and the second white grayscale value with the corresponding red grayscale value, green grayscale value, and blue grayscale value to form a first image frame and a second image frame.
  • step S104 the image frame to be displayed is divided into two different image frames, that is, a first image frame and a second image frame, wherein the white grayscale value in the first image frame is a first white grayscale value, The grayscale value in the second image frame is the second white grayscale value, and the grayscale values of the other colors are the same as the grayscale values of the corresponding colors in the image frame to be displayed.
  • Step S105 sequentially output the first image frame and the second image frame to the liquid crystal panel.
  • the update frequency of the first image frame and the second image frame is twice the update frequency of the image frame to be displayed. For example, if the update frequency of the image frame to be displayed is 60 Hz, the update frequency of the first image frame and the second image frame is 120 Hz.
  • the first image frame and the second image frame are sequentially output to the liquid crystal panel. Due to the persistence effect of the human eye, the brightness observed by the human eye is still the brightness of the white grayscale value in the image frame to be displayed; The different angles are at different tilt angles, so the Gamma curve of the liquid crystal panel can be improved greatly at a large viewing angle.
  • the image display method and the liquid crystal display device of the present invention divide the white grayscale value into the first white grayscale value and the second white grayscale value in the image frame to be displayed, and the first white grayscale The value, the second white grayscale value, and the red grayscale value, the green grayscale value, and the blue grayscale value in the image frame to be displayed are combined to form a first image frame and a second image frame, and the first image frame and the second image frame The image frames are sequentially output to the liquid crystal panel.
  • the present invention can improve the phenomenon of color drift occurring when viewing a liquid crystal panel at a large viewing angle, thereby improving the display quality of the liquid crystal panel.

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

本发明公开了一种图像显示方法及液晶显示装置。该图像显示方法包括：获取待显示图像帧的各像素单元的四色子像素数据，四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值；按照预定规则将白色灰阶值划分为第一白色灰阶值和第二白色灰阶值；将第一白色灰阶值、第二白色灰阶值分别和对应的红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧；将第一图像帧和第二图像帧依次输出至液晶面板。通过上述方式，本发明能够改善大视角观看液晶面板时出现的颜色漂移的现象，进而提高液晶面板的显示品质。

Description

一种图像显示方法及液晶显示装置
【技术领域】
本发明涉及液晶领域，特别是涉及一种图像显示方法及液晶显示装置。
【背景技术】
RGBW四基色显示技术在RGW三基色的基础上增加了白像素，从而可以提高液晶面板的穿透率；同时，通过使用子像素共享算法在解析度不变的前提下可以减少液晶面板1/3的像素数目，实现在降低超高解析度的生产良率风险、降低40%的背光功耗的同时，提高图像对比度的效果，因此RGBW液晶面板在未来具有广阔的发展空间。
但是RGBW液晶面板也存在一种固有的缺陷，即当大视角(view angle)观看时，光学亮度曲线无法符合gamma 2.2，即出现颜色漂移(color shift)的现象。且当观看视角越大时，颜色漂移现象越明显。
图1是现有技术的液晶面板在不同视角时的gamma曲线。如图1所示，当视角为正视角度0°时，gamma值为2.2。随着视角由正视角度0°变为斜视角度30°再变为斜视角度60°，不同视角对应的gamma曲线偏离正视角度0°所对应的gamma曲线的程度越来越严重，从而使得颜色漂移现象越来越明显。
因此，如何改善RGBW液晶面板的颜色漂移现象，进而提高RGBW液晶面板的显示品质是个亟待解决的问题。
【发明内容】
本发明主要解决的技术问题是提供一种图像显示方法及液晶显示装置，能够改善颜色漂移的现象。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种图像显示方法，该方法包括：提供一液晶面板，液晶面板包括多个像素单元，每个像素单元包括四色子像素；获取待显示图像帧的各像素单元的四色子像素数据，四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值；按照预定规则将白色灰阶值划分为第一白色灰阶值和第二白色灰阶值；将第一白色灰阶值、第二白色灰阶值分别和对应的红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧；将第一图像帧和第二图像帧依次输出至液晶面板；其中，第一白色灰阶值小于白色灰阶值，且白色灰阶值小于第二白色灰阶值；其中，第一图像帧、第二图像帧的更新频率为待显示图像帧的更新频率的两倍。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种图像显示方法，该方法包括：提供一液晶面板，液晶面板包括多个像素单元，每个像素单元包括四色子像素；获取待显示图像帧的各像素单元的四色子像素数据，四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值；按照预定规则将白色灰阶值划分为第一白色灰阶值和第二白色灰阶值；将第一白色灰阶值、第二白色灰阶值分别和对应的红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧；将第一图像帧和第二图像帧依次输出至液晶面板。
为解决上述技术问题，本发明采用的再一个技术方案是： 提供一种液晶显示装置，该显示装置包括：液晶面板，包括多个像素单元，每个像素单元包括四色子像素；控制电路，耦接于液晶面板，用于获取待显示图像帧的各像素单元的四色子像素数据，四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值，按照预定规则将白色灰阶值划分为第一白色灰阶值和第二白色灰阶值，将第一白色灰阶值、第二白色灰阶值分别和对应的红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧，将第一图像帧和第二图像帧依次输出至液晶面板。
本发明的有益效果是：本发明的图像显示方法及液晶显示装置通过将待显示图像帧中白色灰阶值划分为第一白色灰阶值和第二白色灰阶值，将第一白色灰阶值、第二白色灰阶值和待显示图像帧中的红色灰阶值、绿色灰阶值、蓝色灰阶值组合形成第一图像帧和第二图像帧，将第一图像帧、第二图像帧依次输出至液晶面板。通过上述方式，本发明能够改善大视角观看液晶面板时出现的颜色漂移的现象，进而提高液晶面板的显示品质。
【附图说明】
图1是现有技术的液晶面板在不同视角时的gamma曲线；
图2是本发明实施例的液晶显示装置的结构示意图；
图3是改善前后大视角观测液晶面板时的观测曲线对比图；
图4是本发明实施例的图像显示方法的流程图。
【具体实施方式】
在说明书及权利要求书当中使用了某些词汇来指称特定的组件，所属领域中的技术人员应可理解，制造商可能会用不同的名词来称呼同样的组件。本说明书及权利要求书并不以名称的差异来作为区分组件的方式，而是以组件在功能上的差异来作为区分的基准。下面结合附图和实施例对本发明进行详细说明。
图2是本发明实施例的液晶显示装置的结构示意图。如图2所示，液晶显示装置包括液晶面板11和控制电路12。
液晶面板11包括多条数据线D（N）（N为自然数）、多条扫描线G（N）（N为自然数）和多个像素单元111。每个像素单元111包括四色子像素112，其中，四色子像素112分别为红色子像素R、绿色子像素G、蓝色子像素B和白色子像素W，每个子像素112连接对应的一条数据线和一条扫描线。
优选地，液晶面板11的像素单元111每两行重复排列，其中，第一行和第二行像素单元111中的四色子像素的排列顺序相反。
在本实施例中，第一行像素单元111按照红色子像素R、绿色子像素G、蓝色子像素B、白色子像素W的顺序重复排列，第二行像素单元111按照白色子像素W、蓝色子像素B、绿色子像素G、红色子像素R的顺序重复排列。本领域的技术人员可以理解，本实施例中的子像素的排序方式仅为举例，本发明不以此为限。
控制电路12耦接于液晶面板11，用于获取待显示图像帧的各像素单元的四色子像素数据，四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值，按照预定规则将白色灰阶值划分为第一白色灰阶值和第二白色灰阶值，将第一白色灰阶值、第二白色灰阶值分别和对应的红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧，将第一图像帧和第二图像帧依次输出至液晶面板11。
优选地，第一白色灰阶值小于白色灰阶值，且白色灰阶值小于第二白色灰阶值。具体来说，第一白色灰阶值和第二白色灰阶值之和等于白色灰阶值的两倍。举例来说，假设待显示图像帧的白色灰阶值为127，则第一白色灰阶值可以为122，第二白色灰阶值可以为132。
优选地，液晶面板12的白色灰阶值包括256个灰阶，从0~255，其中，白色灰阶值中的最高灰阶为255。
在本实施例中，将第一图像帧和第二图像帧依次输出至液晶面板11的操作具体为：控制电路12控制扫描线G（N）打开对应的子像素112的晶体管的栅极，接着按照第一图像帧中四色子像素数据控制数据线D（N）向对应的子像素112的源极施加各子像素灰阶值对应的电压即可实现在液晶面板11上显示第一图像帧，接着重复上述操作，实现第二图像帧的显示。
在本实施例中，第一图像帧、第二图像帧的更新频率为待显示图像帧的更新频率的两倍。其中，第一图像帧或第二图像帧的更新频率可以理解为液晶面板的刷新频率。举例来说，若待显示图像帧的更新频率为60Hz，则第一图像帧、第二图像帧的更新频率为120Hz。
本领域的技术人员可以理解，在本实施例中，通过将待显示图像帧划分为两个图像帧也即第一图像帧和第二图像帧来显示，具体来说，通过将待显示图像帧中的白色灰阶值划分为第一图像帧中的第一白色灰阶值和第二图像帧中的第二白色灰阶值来驱动液晶面板中的白色子像素，由于人眼视觉暂留效应，最终人眼观察到的依然是待显示图像帧中白色灰阶值的亮度，但是液晶分子在第一图像帧和第二图像帧的显示时刻由于驱动白色子像素的电压发生变化而呈不同倾斜角，也即呈不同的gamma曲线特性，故大视角时，液晶面板的Gamma曲线能得到很好地改善，从而可以改善液晶面板的颜色漂移现象，最终提高液晶面板的显示品质。
图3是改善前后大视角观测液晶面板时的观测曲线对比图。如图3所示，比较待显示图像帧直接输出至液晶面板也即改善前和将待显示图像帧划分为第一图像帧和第二图像帧依次输出至液晶面板也即改善后，后者观测到的正视角亮度和偏视角亮度形成的观测曲线更接近理想直线，也即在大视角观测时，具有更好的显示效果。
图4是本发明实施例的图像显示方法的流程图，该方法基于图2所示的液晶显示装置。如图4所示，该方法包括步骤：
步骤S101：提供一液晶面板，液晶面板包括多个像素单元，每个像素单元包括四色子像素。
在步骤S101中，像素单元包括四色子像素，其中，四色子像素分别为红色子像素、绿色子像素、蓝色子像素和白色子像素。
液晶面板的像素单元每两行重复排列，其中，第一行和第二行像素单元中的四色子像素的排列顺序相反。举例来说，第一行像素单元按照红色子像素R、绿色子像素G、蓝色子像素B、白色子像素W的顺序重复排列，第二行像素单元按照白色子像素W、蓝色子像素B、绿色子像素G、红色子像素R的顺序重复排列。
步骤S102：获取待显示图像帧的各像素单元的四色子像素数据，四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值。
步骤S103：按照预定规则将白色灰阶值划分为第一白色灰阶值和第二白色灰阶值。
在步骤S103中，第一白色灰阶值小于白色灰阶值，且白色灰阶值小于第二白色灰阶值。优选地，第一白色灰阶值和第二白色灰阶值之和等于白色灰阶值的两倍。
步骤S104：将第一白色灰阶值、第二白色灰阶值分别和对应的红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧。
在步骤S104中，将待显示图像帧划分为两个不同的图像帧也即第一图像帧和第二图像帧，其中，第一图像帧中的白色灰阶值为第一白色灰阶值，第二图像帧中的灰阶值为第二白色灰阶值，其它颜色的灰阶值和待显示图像帧中对应的颜色的灰阶值相同。
步骤S105：将第一图像帧和第二图像帧依次输出至液晶面板。
在步骤S105中，第一图像帧、第二图像帧的更新频率为待显示图像帧的更新频率的两倍。举例来说，若待显示图像帧的更新频率为60Hz，则第一图像帧、第二图像帧的更新频率为120Hz。
其中，将第一图像帧和第二图像帧依次输出至液晶面板，由于人眼视觉暂留效应，最终人眼观察到的依然是待显示图像帧中白色灰阶值的亮度；但是液晶分子在不同的时刻成不同倾斜角，故大视角时，液晶面板的Gamma曲线能得到很好地改善。
本发明的有益效果是：本发明的图像显示方法及液晶显示装置通过将待显示图像帧中白色灰阶值划分为第一白色灰阶值和第二白色灰阶值，将第一白色灰阶值、第二白色灰阶值和待显示图像帧中的红色灰阶值、绿色灰阶值、蓝色灰阶值组合形成第一图像帧和第二图像帧，将第一图像帧、第二图像帧依次输出至液晶面板。通过上述方式，本发明能够改善大视角观看液晶面板时出现的颜色漂移的现象，进而提高液晶面板的显示品质。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (14)

  1. 一种图像显示方法，其中，所述方法包括：
    提供一液晶面板，所述液晶面板包括多个像素单元，每个所述像素单元包括四色子像素；
    获取待显示图像帧的各像素单元的四色子像素数据，所述四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值；
    按照预定规则将所述白色灰阶值划分为第一白色灰阶值和第二白色灰阶值；
    将所述第一白色灰阶值、所述第二白色灰阶值分别和对应的所述红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧；
    将所述第一图像帧和所述第二图像帧依次输出至所述液晶面板；
    其中，所述第一白色灰阶值小于所述白色灰阶值，且所述白色灰阶值小于所述第二白色灰阶值；
    其中，所述第一图像帧、所述第二图像帧的更新频率为所述待显示图像帧的更新频率的两倍。
  2. 根据权利要求1所述的显示方法，其中，所述第一白色灰阶值和所述第二白色灰阶值之和等于所述白色灰阶值的两倍。
  3. 根据权利要求1所述的显示方法，其中，所述液晶面板的所述像素单元每两行重复排列，其中，第一行和第二行所述像素单元中四色子像素的排列顺序相反。
  4. 根据权利要求3所述的显示方法，其中，第一行所述像素单元按照红色子像素、绿色子像素、蓝色子像素、白色子像素的顺序重复排列，第二行所述像素单元按照白色子像素、蓝色子像素、绿色子像素、红色子像素的顺序重复排列。
  5. 一种图像显示方法，其中，所述方法包括：
    提供一液晶面板，所述液晶面板包括多个像素单元，每个所述像素单元包括四色子像素；
    获取待显示图像帧的各像素单元的四色子像素数据，所述四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值；
    按照预定规则将所述白色灰阶值划分为第一白色灰阶值和第二白色灰阶值；
    将所述第一白色灰阶值、所述第二白色灰阶值分别和对应的所述红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧；
    将所述第一图像帧和所述第二图像帧依次输出至所述液晶面板。
  6. 根据权利要求5所述的显示方法，其中，所述第一白色灰阶值小于所述白色灰阶值，且所述白色灰阶值小于所述第二白色灰阶值。
  7. 根据权利要求6所述的显示方法，其中，所述第一白色灰阶值和所述第二白色灰阶值之和等于所述白色灰阶值的两倍。
  8. 根据权利要求5所述的显示方法，其中，所述第一图像帧、所述第二图像帧的更新频率为所述待显示图像帧的更新频率的两倍。
  9. 根据权利要求5所述的显示方法，其中，所述液晶面板的所述像素单元每两行重复排列，其中，第一行和第二行所述像素单元中四色子像素的排列顺序相反。
  10. 根据权利要求9所述的显示方法，其中，第一行所述像素单元按照红色子像素、绿色子像素、蓝色子像素、白色子像素的顺序重复排列，第二行所述像素单元按照白色子像素、蓝色子像素、绿色子像素、红色子像素的顺序重复排列。
  11. 一种液晶显示装置，其中，所述显示装置包括：
    液晶面板，包括多个像素单元，每个所述像素单元包括四色子像素；
    控制电路，耦接于所述液晶面板，用于获取待显示图像帧的各像素单元的四色子像素数据，所述四色子像素数据包括红色灰阶值、绿色灰阶值、蓝色灰阶值和白色灰阶值，按照预定规则将所述白色灰阶值划分为第一白色灰阶值和第二白色灰阶值，将所述第一白色灰阶值、所述第二白色灰阶值分别和对应的所述红色灰阶值、绿色灰阶值、蓝色灰阶值组合以形成第一图像帧和第二图像帧，将所述第一图像帧和所述第二图像帧依次输出至所述液晶面板。
  12. 根据权利要求11所述的显示装置，其中，所述第一白色灰阶值小于所述白色灰阶值，且所述白色灰阶值小于所述第二白色灰阶值。
  13. 根据权利要求12所述的显示装置，其中，所述第一白色灰阶值和所述第二白色灰阶值之和等于所述白色灰阶值的两倍。
  14. 根据权利要求11所述的显示装置，其中，所述第一图像帧、所述第二图像帧的更新频率为所述待显示图像帧的更新频率的两倍。
PCT/CN2017/097863 2017-07-14 2017-08-17 一种图像显示方法及液晶显示装置 Ceased WO2019010750A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/556,565 US20190019464A1 (en) 2017-07-14 2017-08-17 Image display method and liquid crystal display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710574324.XA CN107256700B (zh) 2017-07-14 2017-07-14 一种图像显示方法及液晶显示装置
CN201710574324.X 2017-07-14

Publications (1)

Publication Number Publication Date
WO2019010750A1 true WO2019010750A1 (zh) 2019-01-17

Family

ID=60025602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/097863 Ceased WO2019010750A1 (zh) 2017-07-14 2017-08-17 一种图像显示方法及液晶显示装置

Country Status (2)

Country Link
CN (1) CN107256700B (zh)
WO (1) WO2019010750A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107801055A (zh) * 2017-11-01 2018-03-13 北京邦邦共赢网络科技有限公司 一种呈现图像的方法和装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103155026A (zh) * 2010-10-19 2013-06-12 夏普株式会社 显示装置
CN106842724A (zh) * 2016-12-20 2017-06-13 惠科股份有限公司 液晶显示器件及其驱动方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI339835B (en) * 2005-02-03 2011-04-01 Chimei Innolux Corp Pixel structure for a color display device, organic light emitting device module, electronic device and method of rendering color of a pixel in a display device
KR101093258B1 (ko) * 2009-11-12 2011-12-14 삼성모바일디스플레이주식회사 액정표시장치
CN102074207B (zh) * 2009-11-20 2013-02-06 群康科技(深圳)有限公司 液晶显示器
CN103226934B (zh) * 2013-03-14 2016-01-13 东莞宇龙通信科技有限公司 一种移动终端以及使用移动终端显示信息的方法
TWI575506B (zh) * 2016-08-16 2017-03-21 友達光電股份有限公司 顯示控制單元、顯示裝置以及顯示控制方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103155026A (zh) * 2010-10-19 2013-06-12 夏普株式会社 显示装置
CN106842724A (zh) * 2016-12-20 2017-06-13 惠科股份有限公司 液晶显示器件及其驱动方法

Also Published As

Publication number Publication date
CN107256700B (zh) 2020-03-10
CN107256700A (zh) 2017-10-17

Similar Documents

Publication Publication Date Title
CN111028812B (zh) 显示面板及其驱动方法
CN104714318B (zh) 液晶显示器及驱动其的方法
CN108831399B (zh) 显示驱动方法及液晶显示装置
CN112540486B (zh) 显示面板及其显示装置
JP6373498B2 (ja) 配列基板及び液晶パネル及び液晶ディスプレイ
CN112540487A (zh) 显示面板及其显示装置
WO2017024644A1 (zh) 一种液晶显示面板及其驱动电路
CN109215598B (zh) 显示面板及其驱动方法
TWI413094B (zh) 半源驅動顯示面板
WO2017101190A1 (zh) 显示器和其驱动方法
WO2017015972A1 (zh) 一种液晶显示器
CN107633827B (zh) 显示面板的驱动方法及显示装置
US11527213B2 (en) Driving method of display panel for reducing viewing angle color deviation and display device
WO2019127767A1 (zh) 显示面板的驱动方法及显示装置
WO2017031790A1 (zh) 阵列基板及其驱动方法
KR20140058252A (ko) 액정 표시 장치 및 그의 구동 방법
CN208189192U (zh) 一种液晶显示装置
US20170032749A1 (en) Liquid crystal display device
WO2013149474A1 (zh) 液晶显示面板及其驱动装置、方法
WO2017088268A1 (zh) 具有数据线共享架构的阵列基板
CN104849929B (zh) 液晶显示面板及液晶显示装置
WO2016173006A1 (zh) 一种液晶面板及其驱动方法
WO2018176588A1 (zh) 液晶显示面板的驱动电路及液晶显示器
WO2015043036A1 (zh) 一种阵列基板及液晶显示面板
WO2017092143A1 (zh) 液晶面板、液晶显示装置及像素阵列

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17917882

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: 17917882

Country of ref document: EP

Kind code of ref document: A1