WO2016095317A1 - 一种液晶显示面板及其驱动方法 - Google Patents

一种液晶显示面板及其驱动方法 Download PDF

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WO2016095317A1
WO2016095317A1 PCT/CN2015/071127 CN2015071127W WO2016095317A1 WO 2016095317 A1 WO2016095317 A1 WO 2016095317A1 CN 2015071127 W CN2015071127 W CN 2015071127W WO 2016095317 A1 WO2016095317 A1 WO 2016095317A1
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video data
input
grayscale value
interval
liquid crystal
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PCT/CN2015/071127
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English (en)
French (fr)
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陈黎暄
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深圳市华星光电技术有限公司
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Priority to US14/428,361 priority Critical patent/US9520093B2/en
Publication of WO2016095317A1 publication Critical patent/WO2016095317A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation

Definitions

  • the invention belongs to the technical field of liquid crystal display, and in particular to a liquid crystal display panel and a driving method thereof.
  • liquid crystal displays LCDs
  • advantages such as no radiation and low electromagnetic interference have become the mainstream of the market.
  • wide viewing angle technology is one of the development priorities of liquid crystal displays.
  • a wide-angle liquid crystal display often undergoes a color shift phenomenon.
  • each pixel unit (pixel) is divided into a main pixel area (Sub pixel) and a sub-pixel area (Sub pixel) having unequal areas, and a main pixel area in the same pixel unit.
  • the sub-pixel area is connected to different data lines and the same gate line.
  • the number of data lines of the input data signal is twice as large as the original, which greatly reduces the aperture ratio of the liquid crystal display panel, thereby affecting the liquid crystal display.
  • the transmittance of the panel which in turn reduces the display quality of the liquid crystal display panel.
  • an object of the present invention is to provide a driving method of a liquid crystal display panel, the liquid crystal display panel including a plurality of display units, the display unit including two adjacent pixel units, wherein
  • the driving method includes: receiving input video data; Determining whether the input video data is in a video data interval of a plurality of predetermined skin tone pictures; if the input video data is in a video data interval of a predetermined skin tone picture, acquiring a corresponding high video according to the input video data Data and low video data; providing the high video data to one of the two pixel units and providing the low video data to the other of the two pixel units.
  • the input video data is not in the video data section of any predetermined skin tone picture, the input video data is provided to the pixel unit.
  • the input video data includes an input red grayscale value, an input green grayscale value, and an input blue grayscale value
  • the video data interval of the predetermined skin color image includes a red grayscale value interval, and a green gray a step value interval and a blue gray scale value interval
  • the input video data is in the video data interval of the certain predetermined skin color picture: the input red gray level value is in the certain predetermined skin color a red grayscale value interval of the picture, and the input green grayscale value is in a green grayscale value interval of the certain predetermined skin color picture, and the input blue grayscale value is in the certain predetermined skin color picture
  • the range of blue grayscale values is possible.
  • the input video data includes an input red grayscale value, an input green grayscale value, and an input blue grayscale value
  • the video data interval of the predetermined skin color image includes a red grayscale value interval, and a green gray a step value interval and a blue gray scale value interval
  • the input video data is not in the video data interval of any predetermined skin tone picture: the at least one color gray level value of the input is not in any predetermined skin color picture Corresponding color grayscale value interval.
  • the liquid crystal display panel further includes a lookup table, the lookup table includes a plurality of video data and high video data and low video data divided by the video data, wherein the corresponding high is obtained according to the input video data.
  • the method of the video data and the low video data is specifically: searching for the high video data and the low video data corresponding to the input video data in the lookup table according to the input video data.
  • the video data is divided into high video data and low video data by using Equation 1.
  • e(H, L) takes a minimum value
  • T represents the video data
  • H represents high video data corresponding to the video data
  • L represents low video data corresponding to the video data
  • S represents a predetermined threshold
  • Lv ⁇ (H) indicates a luminance value corresponding to the high video data H at the front view angle ⁇ of the image displayed by the video data T
  • Lv ⁇ (L) indicates that the image displayed by the video data T is at the front view angle ⁇ and the low video.
  • the luminance value corresponding to the data L, Lv ⁇ (T) represents the luminance value of the image displayed by the video data T at the front view angle ⁇
  • x ⁇ (H, L) and y ⁇ (H, L) represent the use of the video
  • the image of the data T shows the chromaticity coordinates in the CIE 1931 system at the squint angle ⁇
  • x ⁇ and y ⁇ represent the chromaticity coordinates in the CIE 1931 system in which the image displayed by the video data T is at the front view angle ⁇ .
  • the predetermined threshold S ranges from 0.05 to 0.1.
  • the front view angle ⁇ is 0°
  • the squint angle ⁇ is 30 to 80°.
  • the squint angle ⁇ is 60°.
  • Another object of the present invention is to provide a liquid crystal display panel including a gate controller, a source controller, and a pixel unit, wherein the gate controller supplies a scan signal to the pixel unit through a scan line, and the source controller passes The data line provides a data signal to the pixel unit, and the liquid crystal display panel is driven to display using the driving method described above.
  • the liquid crystal display panel and the driving method thereof of the present invention convert the input video data into high video data and low video data for a predetermined skin color picture, and provide the high video data and the low video data to the adjacent two pixel units, respectively.
  • the resolution and the signal are kept unchanged while displaying other screens, and the color shift problem generated when the side view or the squint is reduced is reduced, and the liquid crystal display panel is not reduced.
  • the aperture ratio ensures the display quality of the liquid crystal display panel.
  • FIG. 1 is a schematic structural view of a liquid crystal display panel according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of dividing a display unit in a liquid crystal display panel according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a driving method of a liquid crystal display panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of providing video data to a display unit in a driving method of a liquid crystal display panel according to an embodiment of the present invention
  • FIG. 5 is another schematic diagram of providing video data to a display unit in a method of driving a liquid crystal display panel according to an embodiment of the present invention.
  • 1 is a schematic structural view of a liquid crystal display panel according to an embodiment of the present invention.
  • 2 is a schematic diagram of dividing a display unit in a liquid crystal display panel according to an embodiment of the present invention.
  • a liquid crystal display panel includes a display area 1, a gate controller 2, a source controller 3, and a lookup table (not shown).
  • the display area 1 is divided into a plurality of display units 4, wherein each display unit 4 includes adjacent first pixel units 5a and second pixel units 5b.
  • the first pixel unit 5a and the second pixel unit 5b each include a red sub-pixel 51, a green sub-pixel 52, and a blue sub-pixel 53.
  • the gate controller 2 supplies a scan signal to each of the pixel units 5a, 5b through a scan line (not shown).
  • the source controller 3 supplies video data to each of the pixel units 5a, 5b through a data line (not shown).
  • FIG. 3 is a flow chart of a driving method of a liquid crystal display panel according to an embodiment of the present invention.
  • a driving method of a liquid crystal display panel includes:
  • Step 210 The liquid crystal display panel receives the input video data.
  • the input video data includes red The grayscale value of the color, the grayscale value of the green, and the grayscale value of the blue.
  • Step 220 Determine whether the input video data is in a video data interval of a plurality of predetermined skin tone pictures.
  • the video data interval of the predetermined skin color picture includes a red grayscale value interval, a green grayscale value interval, and a blue grayscale value interval.
  • Table 1 shows video data of a plurality of predetermined skin tone pictures.
  • the red grayscale value interval is (a*115, b*115), and the green grayscale value interval is (a*82).
  • the blue grayscale value interval is (a*68, b*68), where a is less than 1 and b is greater than 1.
  • the input video data refers to a video data interval of a predetermined skin tone picture: the input red grayscale value is in a red grayscale value interval of a predetermined skin color picture, and the input green grayscale value is at a predetermined schedule.
  • the green grayscale value interval of the skin color picture, and the input blue grayscale value is in the blue grayscale value interval of a predetermined skin color picture.
  • the input video data does not refer to the video data interval of any predetermined skin tone picture: the input at least one color grayscale value (ie, the red grayscale value or the green grayscale value or the blue grayscale value) is not at any predetermined The corresponding color grayscale value interval of the skin tone picture.
  • the input at least one color grayscale value ie, the red grayscale value or the green grayscale value or the blue grayscale value
  • Step 230 Acquire corresponding high video data and low video data according to the input video data.
  • the lookup table of the liquid crystal display panel stores a plurality of video data and high video data and low video data into which each video data is divided.
  • the lookup table of the liquid crystal display panel stores 256 (0 to 255) pieces of video data, which is a color grayscale value. That is, the lookup table 4 of the liquid crystal display panel stores 256 red grayscale values, 256 green grayscale values, and 256 blue grayscale values, and high red grayscale values divided by each red grayscale value. And low red grayscale values, high green grayscale values and low green grayscale values divided by each green grayscale value, high blue grayscale values and low blue divided by each blue grayscale value Grayscale value.
  • each video data is divided into high video data and low video data using Equation 1 below.
  • T represents video data
  • H represents high video data corresponding to video data
  • L represents low video data corresponding to video data
  • S represents a predetermined threshold
  • Lv ⁇ (H) represents video utilization.
  • the image displayed by the data T has a luminance value corresponding to the high video data H at the front view angle ⁇
  • Lv ⁇ (L) represents the luminance value corresponding to the low video data L at the front view angle ⁇ of the image displayed by the video data T
  • Lv ⁇ (T ) indicates the luminance value of the image displayed by the video data T at the front view angle ⁇
  • x ⁇ (H, L) and y ⁇ (H, L) indicate that the image displayed by the video data T is in the CIE 1931 system at the squint angle ⁇ .
  • the chromaticity coordinates, x ⁇ and y ⁇ represent the chromaticity coordinates in the CIE 1931 system of the image displayed by the video data T at the front view angle ⁇ .
  • the predetermined threshold S ranges from 0.05 to 0.1.
  • the front view angle ⁇ is 0°,
  • the squint angle ⁇ is 30 to 80°.
  • Each red grayscale value may be divided into a high red grayscale value and a low red grayscale value according to the above formula 1, and each green grayscale value is divided into a high green grayscale value and a low green grayscale value, and Each blue grayscale value is divided into a high blue grayscale value and a low blue grayscale value.
  • Step 240 The source controller 3 supplies the high video data found by the lookup table according to the input video data to one of the first pixel unit 5a and the second pixel unit 5b, and the source controller 3 will according to the input.
  • the video data is supplied to the other of the first pixel unit 5a and the second pixel unit 5b by the low video data found in the lookup table.
  • Step 250 The source controller 3 supplies the input video data directly to each of the pixel units 5a, 5b.
  • the front view angle ⁇ is 0°
  • the squint angle ⁇ is 60°
  • the first predetermined skin color picture under the analog interface is selected
  • a is 0.9
  • b is 1.1 as a specific example
  • the liquid crystal display panel according to the embodiment of the present invention is used.
  • the specific process of the driving method is described in detail. Among them, for the input video data, only the blue grayscale value is divided. However, the present invention is not limited thereto, and for example, at least one color gray scale value may be divided according to requirements.
  • 4 is a schematic diagram of providing video data to a display unit in a method of driving a liquid crystal display panel according to an embodiment of the present invention.
  • FIG. 5 is another schematic diagram of providing video data to a display unit in a method of driving a liquid crystal display panel according to an embodiment of the present invention.
  • the liquid crystal display panel receives input video data.
  • the input video data includes a red grayscale value R, a green grayscale value G, and a blue grayscale value B.
  • the video data interval of the predetermined skin color picture includes a red grayscale value interval, a green grayscale value interval, and a blue grayscale value interval.
  • the red grayscale value interval is (0.9*115, 1.1*115), and the green grayscale value interval is (0.9*82, 1.1*82), blue.
  • the grayscale value interval is (0.9*68, 1.1*68).
  • the input video data is in the video data section of the first predetermined skin tone picture. According to the input The video data acquires corresponding high video data and low video data.
  • the grayscale value B of the blue is divided only, the corresponding high blue grayscale value BH and low blue grayscale value are found from the lookup table according to the input blue grayscale value B. BL.
  • the source controller 3 supplies the gray level value BH of the blue color according to the input blue to the blue color of one of the first pixel unit 5a and the second pixel unit 5b by the high blue gray scale value BH found in the lookup table.
  • a sub-pixel 53, and the input red grayscale value R and the input green grayscale value G are respectively supplied to the red sub-pixel 51 and the green sub-pixel 52 of the first pixel unit 5a and the second pixel unit 5b;
  • the source controller 3 supplies the blue color of the first pixel unit 5a and the second pixel unit 5b to the other of the first pixel unit 5a and the second pixel unit 5b according to the low gray level value BL found in the lookup table according to the input gray level value B of the blue.
  • the sub-pixel 53, and the input gray scale value R of the red color and the input gray scale value G of the green color are supplied to the red sub-pixel 51 and the green sub-pixel 52 of the other of the first pixel unit 5a and the second pixel unit 5b, respectively. .
  • the source controller 3 will The input video data (i.e., the red grayscale value R, the green grayscale value G, and the blue grayscale value B) are directly supplied to each of the pixel units 5a, 5b.
  • a liquid crystal display panel and a driving method thereof convert input video data into high video data and low video data for a predetermined skin color picture, and provide high video data and low video data to phases respectively.
  • Two pixel units adjacent to each other so that the liquid crystal display panel can improve the large viewing angle effect in a special screen area, and keep the resolution and signal unchanged while displaying other screens, and at the same time reduce the color shift problem caused by side view or squint, and The display quality of the liquid crystal display panel is ensured without reducing the aperture ratio of the liquid crystal display panel.

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Abstract

一种液晶显示面板及其驱动方法，液晶显示面板包括多个显示单元（4），显示单元（4）包括相邻的两个像素单元（5a，5b），驱动方法包括：接收输入的视频数据；判断输入的视频数据是否在多个预定肤色画面的视频数据区间中；如果输入的视频数据在某一预定肤色画面的视频数据区间中，则根据输入的视频数据获取对应的高视频数据和低视频数据；将高视频数据提供给两个像素单元（5a，5b）之一，且将低视频数据提供给两个像素单元（5a，5b）之另一。液晶显示面板及其驱动方法能够针对预定肤色画面将输入的视频数据变换为高视频数据和低视频数据，以使液晶显示面板在特殊画面区域改善大视角效果，在显示其他画面时保持分辨率和信号不变。

Description

一种液晶显示面板及其驱动方法 技术领域
本发明属于液晶显示技术领域，具体地讲，涉及一种液晶显示面板及其驱动方法。
背景技术
随着光电与半导体技术的演进，也带动了平板显示器(Flat Panel Display)的蓬勃发展，而在诸多平板显示器中，液晶显示器(Liquid Crystal Display，简称LCD)因具有高空间利用效率、低消耗功率、无辐射以及低电磁干扰等诸多优越特性，已成为市场的主流。目前，广视角技术为液晶显示器的发展重点之一。然而，当侧看或斜视的视角过大时，广视角液晶显示器常会发生色偏(color shift)现象。
对于广视角液晶显示器发生色偏现象的问题，目前业界中出现了一种采用2D1G技术进行改善。所谓2D1G技术，就是指在液晶显示面板中，将每一像素单元(pixel)分为面积不等的主像素区域(Main pixel)和次像素区域(Sub pixel)，同一像素单元中的主像素区域和次像素区域连接到不同的数据线(Data line)和相同扫描线(Gate line)。通过对主像素区域和次像素区域输入不同的数据信号(即不同的灰阶值)，产生不同的显示亮度和斜视亮度，达到降低侧看或斜视时产生的色偏问题。
但是，对于每一个像素单元，划分为主像素区域和次像素区域之后，其输入数据信号的数据线的数量为原来的两倍，这会大大减小液晶显示面板的开口率，从而影响液晶显示面板的穿透率，进而降低液晶显示面板的显示质量。
发明内容
为了解决上述现有技术存在的问题，本发明的目的在于提供一种液晶显示面板的驱动方法，所述液晶显示面板包括多个显示单元，所述显示单元包括相邻的两个像素单元，其中，所述驱动方法包括：接收输入的视频数据；判断所 述输入的视频数据是否在多个预定肤色画面的视频数据区间中；如果所述输入的视频数据在某一预定肤色画面的视频数据区间中，则根据所述输入的视频数据获取对应的高视频数据和低视频数据；将所述高视频数据提供给所述两个像素单元之一，且将所述低视频数据提供给所述两个像素单元之另一。
进一步地，如果所述输入的视频数据不在任一预定肤色画面的视频数据区间中，则将所述输入的视频数据提供给所述像素单元。
进一步地，所述输入的视频数据包括输入的红色灰阶值、输入的绿色灰阶值及输入的蓝色灰阶值，所述预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间，其中，所述输入的视频数据在所述某一预定肤色画面的视频数据区间中指的是：所述输入的红色灰阶值在所述某一预定肤色画面的红色灰阶值区间，且所述输入的绿色灰阶值在所述某一预定肤色画面的绿色灰阶值区间，且所述输入的蓝色灰阶值在所述某一预定肤色画面的蓝色灰阶值区间。
进一步地，所述输入的视频数据包括输入的红色灰阶值、输入的绿色灰阶值及输入的蓝色灰阶值，所述预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间，其中，所述输入的视频数据不在任一预定肤色画面的视频数据区间中指的是：所述输入的至少一颜色灰阶值不在任一预定肤色画面的对应的颜色灰阶值区间。
进一步地，所述液晶显示面板还包括查找表，所述查找表包括若干视频数据以及所述视频数据划分成的高视频数据和低视频数据，其中，根据所述输入的视频数据获取对应的高视频数据和低视频数据的方法具体为：根据所述输入的视频数据在所述查找表中查找获取所述输入的视频数据对应的高视频数据和低视频数据。
进一步地，利用式子1将所述视频数据划分为高视频数据和低视频数据，
[式子1]
Figure PCTCN2015071127-appb-000001
Δ(H,L)<S，
e(H,L)＝(xβ(H,L)-xα)2+(yβ(H,L)-yα)2，
其中，e(H,L)取最小值，T表示所述视频数据，H表示所述视频数据对应的高视频数据，L表示所述视频数据对应的低视频数据，S表示一预定阈值，Lvα(H)表示利用所述视频数据T显示的图像在正视角度α下与高视频数据H对应的亮度值，Lvα(L)表示利用所述视频数据T显示的图像在正视角度α下与低视频数据L对应的亮度值，Lvα(T)表示利用所述视频数据T显示的图像在正视角度α下的亮度值，xβ(H,L)和yβ(H,L)表示利用所述视频数据T显示的图像在斜视角度β下的CIE1931系统中的色度坐标，xα和yα表示利用所述视频数据T显示的图像在正视角度α下的CIE1931系统中的色度坐标。
进一步地，所述预定阈值S的取值范围为0.05～0.1。
进一步地，所述正视角度α为0°，所述斜视角度β为30～80°。
进一步地，所述斜视角度β为60°。
本发明的另一目的还在于提供一种液晶显示面板，包括栅控制器、源控制器以及像素单元，所述栅控制器通过扫描线向所述像素单元提供扫描信号，所述源控制器通过数据线向所述像素单元提供数据信号，所述液晶显示面板采用上述的驱动方法进行驱动显示。
本发明的液晶显示面板及其驱动方法，针对预定肤色画面将输入的视频数据变换为高视频数据和低视频数据，并将高视频数据和低视频数据分别提供给相邻的两个像素单元，以使液晶显示面板在特殊画面区域改善大视角效果，又在显示其他画面时保持分辨率和信号不变，同时降低了侧看或斜视时产生的色偏问题，并且不减小液晶显示面板的开口率，保障了液晶显示面板的显示品质。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点 和优点将变得更加清楚，附图中：
图1是根据本发明的实施例的液晶显示面板的结构示意图；
图2是根据本发明的实施例的液晶显示面板中划分显示单元的示意图；
图3是根据本发明的实施例的液晶显示面板的驱动方法的流程图；
图4是根据本发明的实施例的液晶显示面板的驱动方法中向显示单元提供视频数据的一示意图；
图5是根据本发明的实施例的液晶显示面板的驱动方法中向显示单元提供视频数据的另一示意图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。
图1是根据本发明的实施例的液晶显示面板的结构示意图。图2是根据本发明的实施例的液晶显示面板中划分显示单元的示意图。
参照图1和图2，根据本发明的实施例的液晶显示面板包括：显示区域1、栅控制器2、源控制器3和查找表(未示出)。
显示区域1被划分为为多个显示单元4，其中，每个显示单元4包括相邻的第一像素单元5a和第二像素单元5b。第一像素单元5a和第二像素单元5b均包括红色子像素51、绿色子像素52以及蓝色子像素53。栅控制器2通过扫描线(未示出)向每个像素单元5a、5b提供扫描信号。源控制器3通过数据线(未示出)向每个像素单元5a、5b提供视频数据。
图3是根据本发明的实施例的液晶显示面板的驱动方法的流程图。
参照图1至图3，根据本发明的实施例的液晶显示面板的驱动方法包括：
步骤210：液晶显示面板接收输入的视频数据。该输入的视频数据包括红 色的灰阶值、绿色的灰阶值和蓝色的灰阶值。
步骤220：判断该输入的视频数据是否在多个预定肤色画面的视频数据区间中。该预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间。表1示出了多个预定肤色画面的视频数据。
[表1]
Figure PCTCN2015071127-appb-000002
以在模拟接口下的第一预定肤色画面(即预定肤色画面序号为1)为例，其红色灰阶值区间为(a*115，b*115)，绿色灰阶值区间为(a*82，b*82)，蓝色灰阶值区间为(a*68，b*68)，其中，a小于1且b大于1。
如果该输入的视频数据在某个预定肤色画面的视频数据区间中，则进行步骤230和步骤240。该输入的视频数据在某一预定肤色画面的视频数据区间中指的是：输入的红色灰阶值在某一预定肤色画面的红色灰阶值区间中，且输入的绿色灰阶值在某一预定肤色画面的绿色灰阶值区间中，且输入的蓝色灰阶值在某一预定肤色画面的蓝色灰阶值区间中。
如果该输入的视频数据不在任一预定肤色画面的视频数据区间中，则进行 步骤250。该输入的视频数据不在任一预定肤色画面的视频数据区间中指的是：输入的至少一颜色灰阶值(即，红色灰阶值或绿色灰阶值或蓝色灰阶值)不在任一预定肤色画面的对应的颜色灰阶值区间中。
步骤230：根据该输入的视频数据获取对应的高视频数据和低视频数据。液晶显示面板的查找表存储若干视频数据以及每个视频数据划分成的高视频数据和低视频数据。在本实施例中，液晶显示面板的查找表存储256(0～255)个视频数据，该视频数据为颜色灰阶值。也就是说，液晶显示面板的查找表4存储256个红色灰阶值、256个绿色灰阶值和256个蓝色灰阶值，以及由每个红色灰阶值划分成的高红色灰阶值和低红色灰阶值，由每个绿色灰阶值划分成的高绿色灰阶值和低绿色灰阶值，由每个蓝色灰阶值划分成的高蓝色灰阶值和低蓝色灰阶值。
在步骤230中，利用下面的式子1将每个视频数据划分为高视频数据和低视频数据。
[式子1]
Figure PCTCN2015071127-appb-000003
Δ(H,L)<S，
e(H,L)＝(xβ(H,L)-xα)2+(yβ(H,L)-yα)2，
其中，e(H,L)取最小值，T表示视频数据，H表示视频数据对应的高视频数据，L表示视频数据对应的低视频数据，S表示一预定阈值，Lvα(H)表示利用视频数据T显示的图像在正视角度α下与高视频数据H对应的亮度值，Lvα(L)表示利用视频数据T显示的图像在正视角度α下与低视频数据L对应的亮度值，Lvα(T)表示利用视频数据T显示的图像在正视角度α下的亮度值，xβ(H,L)和yβ(H,L)表示利用视频数据T显示的图像在斜视角度β下的CIE1931系统中的色度坐标，xα和yα表示利用视频数据T显示的图像在正视角度α下的CIE1931系统中的色度坐标。
其中，所述预定阈值S的取值范围为0.05～0.1。所述正视角度α为0°， 所述斜视角度β为30～80°。
可根据上述的式子1将每个红色灰阶值划分为高红色灰阶值和低红色灰阶值，将每个绿色灰阶值划分为高绿色灰阶值和低绿色灰阶值，将每个蓝色灰阶值划分为高蓝色灰阶值和低蓝色灰阶值。
步骤240：源控制器3将根据该输入的视频数据由查找表中查找出的高视频数据提供给第一像素单元5a和第二像素单元5b之一，并且源控制器3将根据该输入的视频数据由查找表中查找出的低视频数据提供给第一像素单元5a和第二像素单元5b之另一。
步骤250：源控制器3将该输入的视频数据直接提供给每个像素单元5a、5b。
下面以正视角度α为0°，斜视角度β为60°，选取模拟接口下的第一预定肤色画面，a为0.9，b为1.1为具体的例子，对根据本发明的实施例的液晶显示面板的驱动方法的具体过程进行详细说明。其中，针对输入的视频数据而言，仅对其蓝色灰阶值进行划分。但本发明并不限制于此，例如可根据需求对至少一种颜色灰阶值进行划分。图4是根据本发明的实施例的液晶显示面板的驱动方法中向显示单元提供视频数据的一示意图。图5是根据本发明的实施例的液晶显示面板的驱动方法中向显示单元提供视频数据的另一示意图。
参照图3至图5，首先，液晶显示面板接收输入的视频数据。该输入的视频数据包括红色的灰阶值R、绿色的灰阶值G和蓝色的灰阶值B。
接着，判断该输入的视频数据是否在多个预定肤色画面的视频数据区间中。该预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间。
其中，以在模拟接口下的第一预定肤色画面为例，其红色灰阶值区间为(0.9*115，1.1*115)，绿色灰阶值区间为(0.9*82，1.1*82)，蓝色灰阶值区间为(0.9*68，1.1*68)。
如果0.9*115＜R＜1.1*115，且0.9*82＜G＜1.1*82，且0.9*68＜B＜1.1*68，即该输入的视频数据在第一预定肤色画面的视频数据区间中，则根据该输入的 视频数据获取对应的高视频数据和低视频数据。这里，由于仅针对蓝色的灰阶值B进行划分，因此根据输入的蓝色的灰阶值B从查找表中查找出对应的高蓝色的灰阶值BH和低蓝色的灰阶值BL。
接着，源控制器3将根据输入的蓝色的灰阶值B由查找表中查找出的高蓝色的灰阶值BH提供给第一像素单元5a和第二像素单元5b之一的蓝色子像素53，以及将输入的红色的灰阶值R和输入的绿色的灰阶值G分别提供给第一像素单元5a和第二像素单元5b之一的红色子像素51和绿色子像素52；并且源控制器3将根据输入的蓝色的灰阶值B由查找表中查找出的低蓝色的灰阶值BL提供给第一像素单元5a和第二像素单元5b之另一的蓝色子像素53，以及将输入的红色的灰阶值R和输入的绿色的灰阶值G分别提供给第一像素单元5a和第二像素单元5b之另一的红色子像素51和绿色子像素52。
如果该输入的视频数据不在第一预定肤色画面的视频数据区间中，即红色的灰阶值R不在红色灰阶值区间(0.9*115，1.1*115)中和/或绿色的灰阶值G不在绿色灰阶值区间(0.9*82，1.1*82)中和/或蓝色的灰阶值B不在蓝色灰阶值区间(0.9*68，1.1*68)中，则源控制器3将该输入的视频数据(即红色的灰阶值R、绿色的灰阶值G和蓝色的灰阶值B)直接提供给每个像素单元5a、5b。
综上，根据本发明的实施例的液晶显示面板及其驱动方法，针对预定肤色画面将输入的视频数据变换为高视频数据和低视频数据，并将高视频数据和低视频数据分别提供给相邻的两个像素单元，以使液晶显示面板在特殊画面区域改善大视角效果，又在显示其他画面时保持分辨率和信号不变，同时降低了侧看或斜视时产生的色偏问题，并且不减小液晶显示面板的开口率，保障了液晶显示面板的显示品质。
显然，本发明的保护范围并不局限于上诉的具体实施方式，本领域的技术人员可以对发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (18)

  1. 一种液晶显示面板的驱动方法，其中，所述液晶显示面板包括多个显示单元，所述显示单元包括相邻的两个像素单元，其中，所述驱动方法包括：
    接收输入的视频数据；
    判断所述输入的视频数据是否在多个预定肤色画面的视频数据区间中；
    如果所述输入的视频数据在某一预定肤色画面的视频数据区间中，则根据所述输入的视频数据获取对应的高视频数据和低视频数据；
    将所述高视频数据提供给所述两个像素单元之一，且将所述低视频数据提供给所述两个像素单元之另一。
  2. 根据权利要求1所述的驱动方法，其中，如果所述输入的视频数据不在任一预定肤色画面的视频数据区间中，则将所述输入的视频数据提供给所述像素单元。
  3. 根据权利要求1所述的驱动方法，其中，所述输入的视频数据包括输入的红色灰阶值、输入的绿色灰阶值及输入的蓝色灰阶值，所述预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间，
    其中，所述输入的视频数据在所述某一预定肤色画面的视频数据区间中指的是：所述输入的红色灰阶值在所述某一预定肤色画面的红色灰阶值区间，且所述输入的绿色灰阶值在所述某一预定肤色画面的绿色灰阶值区间，且所述输入的蓝色灰阶值在所述某一预定肤色画面的蓝色灰阶值区间。
  4. 根据权利要求2所述的驱动方法，其中，所述输入的视频数据包括输入的红色灰阶值、输入的绿色灰阶值及输入的蓝色灰阶值，所述预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间，
    其中，所述输入的视频数据不在任一预定肤色画面的视频数据区间中指的是：所述输入的至少一颜色灰阶值不在任一预定肤色画面的对应的颜色灰阶值 区间。
  5. 根据权利要求1所述的驱动方法，其中，所述液晶显示面板还包括查找表，所述查找表包括若干视频数据以及所述视频数据划分成的高视频数据和低视频数据，
    其中，根据所述输入的视频数据获取对应的高视频数据和低视频数据的方法具体为：根据所述输入的视频数据在所述查找表中查找获取所述输入的视频数据对应的高视频数据和低视频数据。
  6. 根据权利要求5所述的驱动方法，其中，利用式子1将所述视频数据划分为高视频数据和低视频数据，
    [式子1]
    Figure PCTCN2015071127-appb-100001
    Δ(H,L)<S，
    e(H,L)＝(xβ(H,L)-xα)2+(yβ(H,L)-yα)2，
    其中，e(H,L)取最小值，T表示所述视频数据，H表示所述视频数据对应的高视频数据，L表示所述视频数据对应的低视频数据，S表示一预定阈值，Lvα(H)表示利用所述视频数据T显示的图像在正视角度α下与高视频数据H对应的亮度值，Lvα(L)表示利用所述视频数据T显示的图像在正视角度α下与低视频数据L对应的亮度值，Lvα(T)表示利用所述视频数据T显示的图像在正视角度α下的亮度值，xβ(H,L)和yβ(H,L)表示利用所述视频数据T显示的图像在斜视角度β下的CIE1931系统中的色度坐标，xα和yα表示利用所述视频数据T显示的图像在正视角度α下的CIE1931系统中的色度坐标。
  7. 根据权利要求6所述的驱动方法，其中，所述预定阈值S的取值范围为0.05～0.1。
  8. 根据权利要求6所述的驱动方法，其中，所述正视角度α为0°，所述斜视角度β为30～80°。
  9. 根据权利要求8所述的驱动方法，其中，所述斜视角度β为60°。
  10. 一种液晶显示面板，包括栅控制器、源控制器以及像素单元，所述栅控制器通过扫描线向所述像素单元提供扫描信号，所述源控制器通过数据线向所述像素单元提供数据信号，其中，所述液晶显示面板的驱动方法包括：
    接收输入的视频数据；
    判断所述输入的视频数据是否在多个预定肤色画面的视频数据区间中；
    如果所述输入的视频数据在某一预定肤色画面的视频数据区间中，则根据所述输入的视频数据获取对应的高视频数据和低视频数据；
    将所述高视频数据提供给所述两个像素单元之一，且将所述低视频数据提供给所述两个像素单元之另一。
  11. 根据权利要求10所述的液晶显示面板，其中，如果所述输入的视频数据不在任一预定肤色画面的视频数据区间中，则将所述输入的视频数据提供给所述像素单元。
  12. 根据权利要求10所述的液晶显示面板，其中，所述输入的视频数据包括输入的红色灰阶值、输入的绿色灰阶值及输入的蓝色灰阶值，所述预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间，
    其中，所述输入的视频数据在所述某一预定肤色画面的视频数据区间中指的是：所述输入的红色灰阶值在所述某一预定肤色画面的红色灰阶值区间，且所述输入的绿色灰阶值在所述某一预定肤色画面的绿色灰阶值区间，且所述输入的蓝色灰阶值在所述某一预定肤色画面的蓝色灰阶值区间。
  13. 根据权利要求11所述的液晶显示面板，其中，所述输入的视频数据包括输入的红色灰阶值、输入的绿色灰阶值及输入的蓝色灰阶值，所述预定肤色画面的视频数据区间包括红色灰阶值区间、绿色灰阶值区间及蓝色灰阶值区间，
    其中，所述输入的视频数据不在任一预定肤色画面的视频数据区间中指的 是：所述输入的至少一颜色灰阶值不在任一预定肤色画面的对应的颜色灰阶值区间。
  14. 根据权利要求10所述的液晶显示面板，其中，所述液晶显示面板还包括查找表，所述查找表包括若干视频数据以及所述视频数据划分成的高视频数据和低视频数据，
    其中，根据所述输入的视频数据获取对应的高视频数据和低视频数据的方法具体为：根据所述输入的视频数据在所述查找表中查找获取所述输入的视频数据对应的高视频数据和低视频数据。
  15. 根据权利要求14所述的液晶显示面板，其中，利用式子1将所述视频数据划分为高视频数据和低视频数据，
    [式子1]
    Figure PCTCN2015071127-appb-100002
    Δ(H,L)<S，
    e(H,L)＝(xβ(H,L)-xα)2+(yβ(H,L)-yα)2，
    其中，e(H,L)取最小值，T表示所述视频数据，H表示所述视频数据对应的高视频数据，L表示所述视频数据对应的低视频数据，S表示一预定阈值，Lvα(H)表示利用所述视频数据T显示的图像在正视角度α下与高视频数据H对应的亮度值，Lvα(L)表示利用所述视频数据T显示的图像在正视角度α下与低视频数据L对应的亮度值，Lvα(T)表示利用所述视频数据T显示的图像在正视角度α下的亮度值，xβ(H,L)和yβ(H,L)表示利用所述视频数据T显示的图像在斜视角度β下的CIE1931系统中的色度坐标，xα和yα表示利用所述视频数据T显示的图像在正视角度α下的CIE1931系统中的色度坐标。
  16. 根据权利要求15所述的液晶显示面板，其中，所述预定阈值S的取值范围为0.05～0.1。
  17. 根据权利要求15所述的液晶显示面板，其中，所述正视角度α为0 °，所述斜视角度β为30～80°。
  18. 根据权利要求17所述的液晶显示面板，其中，所述斜视角度β为60°。
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