WO2019119586A1 - 显示装置的驱动方法及显示装置 - Google Patents

显示装置的驱动方法及显示装置 Download PDF

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Publication number
WO2019119586A1
WO2019119586A1 PCT/CN2018/072824 CN2018072824W WO2019119586A1 WO 2019119586 A1 WO2019119586 A1 WO 2019119586A1 CN 2018072824 W CN2018072824 W CN 2018072824W WO 2019119586 A1 WO2019119586 A1 WO 2019119586A1
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Prior art keywords
grayscale value
display
target
group
value group
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PCT/CN2018/072824
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English (en)
French (fr)
Inventor
何怀亮
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惠科股份有限公司
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Publication of WO2019119586A1 publication Critical patent/WO2019119586A1/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
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources

Definitions

  • the present application relates to the field of display technologies, and in particular, to a driving method and a display device for a display device.
  • the liquid crystal display device generally includes a plurality of pixel units, and the display gray scale value of each pixel unit corresponds to a driving voltage.
  • different driving voltages cause different degrees of change in phase retardation of light of different wavelengths, and the influence on the transmittance of light is also different, so that the user feels a significant decrease in color vividness when viewing a red image.
  • the vividness of the pixel unit can be close to the vividness of the fresh pixel unit in the case of a large viewing angle, that is, in the case of a large viewing angle, the pixel unit has a higher driving voltage (high gray scale)
  • the color of the pixel unit is severely offset from the color of the pixel unit at the time of the positive viewing angle, so that the color intensity of the pixel unit at the time of the high gray level is lowered, and the color shift is severe.
  • the present application provides a driving method and a display device for a display device, by matching a display grayscale value group corresponding to a set pixel unit to a target grayscale value group, and setting a maximum of the target grayscale value group.
  • the target grayscale value is smaller than the maximum display grayscale value in the displayed grayscale value group, and the high grayscale value in the grayscale value group that causes the set pixel unit to be severely colored is deleted, and the high grayscale pair in the case of the large viewing angle is eliminated.
  • the effect of the color saturation of the pixel unit is set, and the display effect of the display device is optimized.
  • the embodiment of the present application provides a driving method of a display device.
  • the display device includes a display panel including a set pixel unit.
  • the driving method of the display device includes:
  • the embodiment of the present application further provides a display device, including:
  • a display panel including a set pixel unit
  • Displaying a grayscale value group obtaining module configured to obtain a display grayscale value group corresponding to the set pixel unit in the display panel
  • the target grayscale value obtaining module is electrically connected to the display grayscale value group obtaining module, and is set to display the grayscale value, the minimum target grayscale value corresponding to the brightness, and the maximum target grayscale according to the displayed grayscale value group. Obtaining a gamma value corresponding to the value, and acquiring a target grayscale value corresponding to the display grayscale value in the display grayscale value group, wherein the display grayscale value is greater than the display grayscale value The minimum display grayscale value in the group is smaller than the maximum display grayscale value in the displayed grayscale value group;
  • the matching module is electrically connected to the target grayscale value obtaining module, and is configured to match the displayed grayscale value group to the target grayscale value group according to the target grayscale value, wherein the displaying the grayscale value group and the The number of grayscale values in the target grayscale value group is equal; the maximum target grayscale value is less than the maximum display grayscale value;
  • a driving module electrically connected to the matching module and the display panel, configured to drive the set pixel unit in the display panel to display according to the target grayscale value group;
  • a backlight module is disposed under the display panel and configured to provide a light source for the display panel.
  • the embodiment of the present application further provides a driving method of a display device.
  • the display device includes a display panel, and the display panel includes a setting pixel unit, and the driving method of the display device includes:
  • the present application provides a driving method and a display device for a display device, by matching a set grayscale value group corresponding to a set pixel unit to a target grayscale value group, and setting a maximum target grayscale value in the target grayscale value group. It is smaller than the maximum display grayscale value in the display grayscale value group, and the set pixel unit in the display panel is driven to display according to the matched target grayscale value group.
  • FIG. 1 is a schematic flowchart of a driving method of a display device according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of correspondence between a display grayscale value group positive viewing angle and a large viewing angle color difference value in a display panel according to an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart diagram of another driving method of a display device according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a display device according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart diagram of another driving method of a display device according to an embodiment of the present disclosure.
  • the display device includes a display panel including a set pixel unit.
  • the driving method can be applied to a scene that needs to drive the display device to perform a flat display, and can be executed by the display device provided by the embodiment of the present application.
  • the method includes steps S110 to S140.
  • step S110 a display grayscale value group corresponding to the set pixel unit in the display panel is acquired.
  • the order value group includes 256 gray scale values, and the minimum display gray scale value in the gray scale value group is displayed as 0, and the maximum display gray scale value is 255.
  • the set pixel unit may be a red pixel unit R, that is, a display grayscale value group corresponding to the red pixel unit R in the display panel may be acquired.
  • step S120 acquiring and displaying the display in the grayscale value group according to the grayscale value in the grayscale value group, the brightness corresponding to the minimum target grayscale value, the brightness corresponding to the maximum target grayscale value, and the set gamma value.
  • the gray scale value corresponds to the target gray scale value; wherein, the gray scale value is greater than the minimum display gray scale value in the display gray scale value group, and is smaller than the maximum display gray scale value in the display gray scale value group.
  • the grayscale values of the pixel units are different, and the brightness of the corresponding pixel unit is also different.
  • the larger the grayscale value corresponding to the pixel unit the greater the brightness of the pixel unit.
  • the display grayscale value smaller than the maximum display grayscale value is displayed according to the display grayscale value in the grayscale value group.
  • the brightness corresponding to the minimum target grayscale value, the brightness corresponding to the maximum target grayscale value, and the set gamma value obtain the target grayscale value corresponding to the grayscale value in the grayscale value group.
  • FIG. 2 is a schematic diagram of a correspondence relationship between a grayscale value positive viewing angle and a large viewing angle color difference value of a pixel unit in a display panel according to an embodiment of the present disclosure.
  • the number of bits of the original gray scale value corresponding to the red pixel unit R can be set to 8 bits, and the abscissa in FIG. 2 indicates the gray scale value corresponding to the red pixel unit R in the display panel.
  • the gray scale value in the group indicates the color difference value of the red pixel unit R in the display panel under the positive viewing angle and the observation angle of view is 60°, and the smaller the value of the ordinate, the red pixel unit in the display panel The closer the saturation of R to a viewing angle of 60° is to the saturation of the red pixel unit R in the case of a positive viewing angle, the less pronounced the color shift phenomenon. As can be seen from FIG.
  • the brightness corresponding to the maximum target grayscale value may be set to RL220, and the set gamma value is set equal to the gamma value of the original gamma curve corresponding to the set pixel unit.
  • the minimum target grayscale value is set to 0
  • the brightness corresponding to the minimum target grayscale value can be set to RL0.
  • the target grayscale value a1 corresponding to a may be equal to f(a, RL0, ⁇ , RL220).
  • a1 is a display grayscale value a in the grayscale value group, a luminance RL0 corresponding to the minimum target grayscale value 0, a luminance RL220 corresponding to the maximum target grayscale value 220, and an original gamma curve corresponding to the set pixel unit.
  • a function of the gamma value ⁇ that is, the brightness RL0 corresponding to the display gray scale value a, the minimum target gray scale value 0, the brightness RL220 corresponding to the maximum target gray scale value 220, and the set pixel in the display grayscale value group.
  • the gamma value ⁇ of the original gamma curve corresponding to the unit is correlated.
  • the foregoing embodiment only exemplarily sets the maximum target grayscale value of the set pixel unit to 220, and may also specifically target the maximum target grayscale value according to the requirement of the viewing angle and the number of bits of the grayscale value group.
  • the embodiment of the present application does not limit this, as long as the maximum target grayscale value of the set pixel unit is smaller than the maximum display grayscale value in the display grayscale value group corresponding to the set pixel unit. Meanwhile, the embodiment of the present application does not limit the number of bits of the gray scale value group and the target gray scale value group corresponding to the pixel unit.
  • step S130 the gray scale value group is matched to the target gray scale value group according to the target gray scale value; wherein the gray scale value group and the target gray scale value group are equal to the gray scale value, and the maximum target gray scale value is displayed. Less than the maximum display grayscale value in the display grayscale value group.
  • the minimum display grayscale value in the displayed grayscale value group may be matched to the minimum target grayscale value in the target grayscale value group, and the display grayscale value in the displayed grayscale value group may be matched to the corresponding target.
  • the grayscale value matches the maximum displayed grayscale value in the grayscale value group to the maximum target grayscale value.
  • Table 1 Red pixel unit shows the correspondence between the grayscale value group and the target grayscale value group
  • Table 1 is a correspondence between a display grayscale value group and a target grayscale value group of a red pixel unit according to an embodiment of the present application.
  • the number of bits of the display grayscale value group and the target grayscale value group corresponding to the red pixel unit R can be set to 8 bits, as can be seen from Table 1.
  • the grayscale value group of the red pixel unit R of the display panel is equal to the grayscale value of the target grayscale value group, and the red pixel unit R in the display panel is severely colored at a large viewing angle in order to avoid high grayscale values.
  • the display grayscale value group corresponding to the red pixel unit R in the table is matched to the target grayscale value group corresponding to the red pixel unit R.
  • the maximum target grayscale value of the target grayscale value group corresponding to the red pixel unit R may be set to 220. Since the maximum target grayscale value in the target grayscale value group corresponding to the red pixel unit R is smaller than the maximum display grayscale value 255 in the display grayscale value group, the color saturation of the high grayscale to the red pixel unit R is eliminated in the case of the large viewing angle. The effect of the degree optimizes the display effect of the display device.
  • the blue pixel unit can still be displayed by using the display grayscale value group corresponding to the blue pixel unit.
  • the green pixel unit can also be displayed by using the display grayscale value group corresponding to the green pixel unit.
  • the display grayscale value smaller than the maximum display grayscale value may be displayed according to the display grayscale value in the grayscale value group, and the brightness corresponding to the minimum target grayscale value, and the maximum The brightness corresponding to the target grayscale value and the set gamma value result in a target grayscale value in the set of grayscale values corresponding to the set pixel unit.
  • the minimum target grayscale value in the target grayscale value group may be set equal to the minimum display grayscale value in the displayed grayscale value group.
  • the maximum target grayscale value in the target grayscale value group corresponding to the set pixel unit in the display panel is smaller than the maximum display grayscale value in the display grayscale value group corresponding to the set pixel unit, in order to improve the display resolution of the display panel.
  • the minimum target grayscale value in the target grayscale value group corresponding to the set pixel unit may be set equal to the minimum display grayscale value 0 in the display grayscale value group, such that the target grayscale value group corresponding to the set pixel unit is set.
  • the span between the minimum target grayscale value and the maximum target grayscale value is large, and the display resolution of the display panel is improved while eliminating the influence of the high grayscale on the color saturation of the set pixel unit while eliminating the large viewing angle. .
  • step S140 the set pixel unit in the display panel is driven according to the target grayscale value group for display.
  • the target grayscale value group corresponding to the set pixel unit in the display panel obtained according to the above steps drives the set pixel unit in the display panel to display, because the maximum target grayscale in the target grayscale value group corresponding to the pixel unit is set.
  • the value is smaller than the maximum display grayscale value in the display grayscale value group corresponding to the set pixel unit, thereby avoiding the problem of the color shift of the set pixel unit caused by the high grayscale effect of setting the pixel unit color saturation under the large viewing angle.
  • the display effect of the display device is
  • FIG. 3 is a schematic flowchart of a driving method of another display device according to an embodiment of the present disclosure.
  • the driving method further includes the following step S250.
  • step S250 the brightness of the red backlight module is adjusted according to the maximum display grayscale value in the display grayscale value group and the maximum target grayscale value in the target grayscale value group.
  • the ratio of the brightness of the adjusted red backlight module to the brightness of the red backlight module before the adjustment is equal to the brightness corresponding to the maximum display gray level value in the gray scale value group and the maximum target gray level in the target gray scale value group. The ratio of the brightness corresponding to the value.
  • the maximum target grayscale value in the target grayscale value group corresponding to the set pixel unit in the display panel is smaller than the maximum display grayscale value in the display grayscale value group, to display the red pixel unit R in the panel.
  • the display gray scale value group and the target gray scale value group corresponding to the red pixel unit R are both 8 bits, and the maximum target gray scale value is 220 as an example, that is, the red pixel unit R in the display panel.
  • the maximum brightness is reduced from the brightness RL255 corresponding to the original 255 gray level to the brightness RL220 corresponding to the gray level of 220.
  • the brightness of the backlight corresponding to the red pixel unit R needs to be increased to maintain the original white point in the display panel by the 255 gray-scale red pixel unit.
  • R, 255 gray-scale blue pixel unit B and 255 gray-scale green pixel unit G are mixed.
  • the brightness of the red backlight module before adjustment can be set to A, and the brightness of the adjusted red backlight module is A'. Then A and A' need to satisfy the following formula:
  • the ratio of the brightness A' of the adjusted red backlight module to the brightness A of the red backlight module before the adjustment is equal to the brightness RL255 corresponding to the maximum display grayscale value in the grayscale value group and the maximum of the target grayscale value group.
  • the ratio RL220 of the brightness corresponding to the target grayscale value is equal to the ratio RL220 of the brightness corresponding to the target grayscale value.
  • FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present application.
  • the display device includes a display grayscale value group acquisition module 11, a target grayscale value acquisition module 12, a matching module 13, a display panel 14, a drive module 15, and a backlight module (not shown).
  • the target grayscale value obtaining module 12 is electrically connected to the display grayscale value group obtaining module 11 and the matching module 13, and the driving module 15 is electrically connected to the matching module 13 and the display panel 14.
  • the backlight module is located below the display panel and is configured to provide a light source for the display panel.
  • the display grayscale value group obtaining module 11 is configured to acquire a display grayscale value group corresponding to the set pixel unit in the display panel.
  • the target grayscale value obtaining module 12 is configured to acquire and display gray according to the display grayscale value in the grayscale value group, the brightness corresponding to the minimum target grayscale value, the brightness corresponding to the maximum target grayscale value, and the set gamma value.
  • the target gray scale value corresponding to the gray scale value in the order value group is displayed, and the display gray scale value in the gray scale value group is greater than the minimum display gray scale value, which is smaller than the maximum display gray scale value.
  • the matching module 13 is configured to match the displayed grayscale value group to the target grayscale value group according to the target grayscale value, and display the grayscale value group and the target grayscale value group in the grayscale value number, and the maximum target grayscale value. Less than the maximum display grayscale value in the display grayscale value group.
  • the driving module 14 is arranged to drive the setting of the pixel unit in the display panel 14 according to the target grayscale value group for display.
  • the matching module 13 is further configured to match the minimum display grayscale value in the displayed grayscale value group to the minimum target grayscale value; and match the display grayscale value in the displayed grayscale value group to the corresponding target grayscale The order value; matches the maximum display grayscale value in the displayed grayscale value group to the maximum target grayscale value.
  • the display device may be a liquid crystal display device
  • FIG. 5 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present application.
  • the display device may include a display panel and a backlight module 15 located below the display panel.
  • the backlight module 15 is provided to provide a light source for display to the display panel.
  • the display panel may include an array substrate 16 adjacent to the backlight module, and a color filter substrate 17 (only a partial region is shown) on the side of the array substrate 16 away from the backlight module 15.
  • the backlight module 15 may include a plurality of red backlight modules 151, a green backlight module 152, and a blue backlight module 153.
  • the color filter substrate 17 may correspondingly include a plurality of pixel units 171 (illustratively shown in FIG. 4 Each of the pixel units 171 includes a red pixel unit R, a green pixel unit G, and a blue pixel unit B.
  • the light emitted by the backlight module 15 can be irradiated onto the liquid crystal layer (not shown) between the array substrate 16 and the color filter substrate 17 through the opening region 161 on the array substrate 16 to realize the normal function of the liquid crystal display panel.
  • the display device may further include a backlight brightness adjustment module and a first control module, and the backlight brightness adjustment module may display the maximum display grayscale value in the grayscale value group and the maximum target grayscale value in the target grayscale value group.
  • Adjusting the brightness of the red backlight module; the first control module can control the ratio of the brightness of the adjusted red backlight module to the brightness of the red backlight module before the adjustment, and is equal to the brightness corresponding to the maximum display gray level value in the gray scale value group. The ratio of the brightness of the largest target grayscale value in the target grayscale value group.
  • the display device may further include a second control module, and the second control module may control the minimum display grayscale value in the display grayscale value group to be the same as the minimum target grayscale value in the target grayscale value group.
  • FIG. 6 is a schematic flowchart diagram of another driving method of a display device according to an embodiment of the present disclosure.
  • the driving method can be applied to a scene that needs to drive the display device to perform a flat display, and can be executed by the display device provided by the embodiment of the present application.
  • the method includes steps S310 to S360.
  • step S310 a display grayscale value group corresponding to the set pixel unit in the display panel is acquired.
  • step S320 acquiring and displaying the display in the grayscale value group according to the grayscale value in the grayscale value group, the brightness corresponding to the minimum target grayscale value, the brightness corresponding to the maximum target grayscale value, and the set gamma value.
  • the grayscale value corresponds to the target grayscale value; wherein, the display in the grayscale value group is greater than the minimum display grayscale value, and less than the maximum display grayscale value.
  • step S330 the minimum display grayscale value in the displayed grayscale value group is matched to the minimum target grayscale value.
  • step S340 the display grayscale value in the displayed grayscale value group is matched to the corresponding target grayscale value.
  • step S350 the maximum display grayscale value in the displayed grayscale value group is matched to the maximum target grayscale value.
  • the maximum target grayscale value is smaller than the maximum display grayscale value in the displayed grayscale value group.
  • step S360 the set pixel unit in the display panel is driven according to the target grayscale value group for display.
  • the embodiment of the present application provides a driving method and a display device for a display device, by matching a display grayscale value group corresponding to a set pixel unit to a target grayscale value group, and setting a maximum target gray in the target grayscale value group.
  • the step value is smaller than the maximum display grayscale value in the display grayscale value group, and the set pixel unit in the display panel is driven according to the matched target grayscale value group to display, and the high grayscale in the grayscale value group is deleted.
  • the value eliminates the influence of high gray scale on the color saturation of the set pixel unit under the condition of large viewing angle, and optimizes the display effect of the display device.

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Abstract

一种显示装置的驱动方法及显示装置，驱动方法包括获取设定像素单元对应的显示灰阶值组(S110)；根据显示灰阶值组中的显示灰阶值、最小和最大目标灰阶值对应的亮度以及设定伽马值获取与显示灰阶值组中的显示灰阶值一一对应的目标灰阶值(S120)；根据目标灰阶值将显示灰阶值组匹配至目标灰阶值组(S130)；根据目标灰阶值组驱动显示面板中的设定像素单元进行显示(S140)。

Description

显示装置的驱动方法及显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种显示装置的驱动方法及显示装置。
背景技术
随着液晶显示装置的应用越来越广泛，液晶显示装置在大视角情况下的色偏现象已成为液晶显示面板发展急需解决的问题。
液晶显示装置中一般包括多个像素单元，每个像素单元的显示灰阶值对应一驱动电压。在大视角情况下，不同的驱动电压使得不同波长光的相位延迟的变化程度不同，对光的穿透率的影响也不同，使得用户在观赏红色影像时感受到色彩鲜艳度明显下降。只有当像素单元的驱动电压下降到一定程度，大视角情况下像素单元的鲜艳度才能接近正视角时鲜像素单元的鲜艳度，即在大视角情况下，像素单元在驱动电压较高(高灰阶)时的颜色相对于正视角时像素单元的颜色偏移严重，使得大视角情况下像素单元在高灰阶时的色彩鲜艳度下降，色偏严重。
发明内容
有鉴于此，本申请提供了一种显示装置的驱动方法及显示装置，通过将设定像素单元对应的显示灰阶值组匹配至目标灰阶值组，且设置目标灰阶值组中的最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值，删除了显示灰阶值组中导致设定像素单元色偏严重的高灰阶值，消除了大视角情况下高灰阶对设定像素单元色彩饱和度的影响，优化了显示装置的显示效果。
本申请实施例提供了一种显示装置的驱动方法。所述显示装置包括显示面板，所述显示面板包括设定像素单元。所述显示装置的驱动方法包括：
获取显示面板中的设定像素单元对应的显示灰阶值组；
根据所述显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与所述显示灰阶值组中的显示灰阶值一一对应的目标灰阶值，其中，所述显示灰阶值大于所述显示灰阶值组中的最小显示灰阶值，小于所述显示灰阶值组中的最大显示灰阶值；
根据所述目标灰阶值将所述显示灰阶值组匹配至目标灰阶值组，其中，所述显示灰阶值组与所述目标灰阶值组中的灰阶值个数相等；所述最大目标灰阶值小于所述最大显示灰阶值；以及
根据所述目标灰阶值组驱动所述显示面板中的所述设定像素单元进行显示。
本申请实施例还提供了一种显示装置，包括：
显示面板，包括设定像素单元；
显示灰阶值组获取模块，设置为获取显示面板中的设定像素单元对应的显示灰阶值组；
目标灰阶值获取模块，与所述显示灰阶值组获取模块电连接，设置为根据所述显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与所述显示灰阶值组中的显示灰阶值一一对应的目标灰阶值，其中，所述显示灰阶值大于所述显示灰阶值组中的最小显示灰阶值，小于所述显示灰阶值组中的最大显示灰阶值；
匹配模块，与所述目标灰阶值获取模块电连接，设置为根据所述目标灰阶值将所述显示灰阶值组匹配至目标灰阶值组，其中，所述显示灰阶值组与所述目标灰阶值组中的灰阶值个数相等；所述最大目标灰阶值小于所述最大显示灰 阶值；
驱动模块，与所述匹配模块和显示面板电连接，设置为根据所述目标灰阶值组驱动所述显示面板中的所述设定像素单元进行显示；以及
背光模块，设置于所述显示面板下方，设置为为所述显示面板提供光源。
本申请实施例还提供了一种显示装置的驱动方法。所述显示装置包括显示面板，所述显示面板包括设定像素单元，所述显示装置的驱动方法包括：
获取显示面板中的设定像素单元对应的显示灰阶值组；
根据所述显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与所述显示灰阶值组中的显示灰阶值一一对应的目标灰阶值，其中，所述显示灰阶值大于所述显示灰阶值组中的最小显示灰阶值，小于所述显示灰阶值组中的最大显示灰阶值；
将所述显示灰阶值组中的最小显示灰阶值匹配至所述最小目标灰阶值；
将所述显示灰阶值组中的显示灰阶值匹配至对应的目标灰阶值；
将所述显示灰阶值组中的最大显示灰阶值匹配至所述最大目标灰阶值，所述最大目标灰阶值小于所述最大显示灰阶值；以及
根据所述目标灰阶值组驱动所述显示面板中的所述设定像素单元进行显示。
本申请提供了一种显示装置的驱动方法及显示装置，通过将设定像素单元对应的显示灰阶值组匹配至目标灰阶值组，且设置目标灰阶值组中的最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值，根据匹配后的目标灰阶值组驱动显示面板中的设定像素单元进行显示。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例所需要使用 的附图做一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的一种显示装置的驱动方法的流程示意图；
图2为本申请实施例提供的一种显示面板中设定像素单元的显示灰阶值组正视角和大视角的色差值的对应关系示意图；
图3为本申请实施例提供的另一种显示装置的驱动方法的流程示意图；
图4为本申请实施例提供的一种显示装置的结构示意图；
图5为本申请实施例提供的一种显示装置的结构示意图；以及
图6为本申请实施例提供的另一种显示装置的驱动方法的流程示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，以下将参照本申请实施例中的附图，通过实施方式清楚、完整地描述本申请的技术方案，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1为本申请实施例提供的一种显示装置驱动方法的流程示意图。显示装置包括显示面板，所述显示面板包括设定像素单元。驱动方法可以应用在需要驱动显示装置进行平面显示的场景，可以由本申请实施例提供的显示装置来执行。该方法包括步骤S110至步骤S140。
在步骤S110、获取显示面板中的设定像素单元对应的显示灰阶值组。
获取显示面板中的设定像素单元对应的显示灰阶值组，以设定像素单元对 应的显示灰阶值组的位数为8比特为例，显示面板中的设定像素单元对应的显示灰阶值组包括256个灰阶值，显示灰阶值组中的最小显示灰阶值为0，最大显示灰阶值为255。
可选的，设定像素单元可以是红色像素单元R，即可以获取显示面板中红色像素单元R对应的显示灰阶值组。
在步骤S120、根据显示灰阶值组中的灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与显示灰阶值组中的显示灰阶值一一对应的目标灰阶值；其中，显示灰阶值大于显示灰阶值组中的最小显示灰阶值，小于显示灰阶值组中的最大显示灰阶值。
可选地，像素单元的灰阶值不同，对应像素单元呈现出的亮度也不同，像素单元对应的灰阶值越大，像素单元的亮度越大。对于显示面板中的设定像素单元对应的显示灰阶值组中的大于最小显示灰阶值，小于最大显示灰阶值的显示灰阶值，均根据显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值获取与显示灰阶值组中的灰阶值一一对应的目标灰阶值。
示例性的，图2为本申请实施例提供的一种显示面板中设定像素单元的灰阶值正视角和大视角的色差值的对应关系示意图。以显示面板中红色像素单元R为例，可以设定红色像素单元R对应的原始灰阶值的位数为8比特，图2中横坐标表示显示面板中红色像素单元R对应的显示灰阶值组中的灰阶值，纵坐标表示显示面板中的红色像素单元R在正视角情况下和在观察视角为60°情况下的色差值，纵坐标的值越小，显示面板中红色像素单元R在视角为60°情况下的饱和度越接近于红色像素单元R在正视角情况下的饱和度，色偏现象越不明显。从图2中可以看出，当显示面板中红色像素单元R的灰阶值从255下降至220时，纵坐标的值 较小且趋于平缓，当显示面板中的红色像素单元R的灰阶值为220左右时，显示面板中红色像素单元R在视角为60°情况下的饱和度接近于红色像素单元R在正视角情况下的饱和度，色偏现象不明显。
示例性的，可以设置最大目标灰阶值为220，则可以设置最大目标灰阶值对应的亮度为RL220，设置设定伽马值等于设定像素单元对应的原始伽马曲线的伽马值为γ，设置最小目标灰阶值为0，则可以设置最小目标灰阶值对应的亮度为RL0。以设定像素单元对应的显示灰阶值组中的显示灰阶值a为例，其中a大于0，小于255，则a对应的目标灰阶值a1可以等于f(a，RL0，γ，RL220)，即a1为显示灰阶值组中的显示灰阶值a、最小目标灰阶值0对应的亮度RL0、最大目标灰阶值220对应的亮度RL220以及设定像素单元对应的原始伽马曲线的伽马值γ的函数，也即a1与显示灰阶值组中的显示灰阶值a、最小目标灰阶值0对应的亮度RL0、最大目标灰阶值220对应的亮度RL220以及设定像素单元对应的原始伽马曲线的伽马值γ均相关。
需要说明的是，上述实施例只是示例性地设置设定像素单元的最大目标灰阶值为220，也可以根据视角需求以及显示灰阶值组的比特数的需求对最大目标灰阶值进行具体限定，本申请实施例对此不作限定，只要保证设定像素单元的最大目标灰阶值小于该设定像素单元对应的显示灰阶值组中的最大显示灰阶值即可。同时，本申请实施例对像素单元对应的显示灰阶值组和目标灰阶值组的比特数也不作限定。
在步骤S130、根据目标灰阶值将显示灰阶值组匹配至目标灰阶值组；其中，显示灰阶值组与目标灰阶值组中的灰阶值个数相等，最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值。
可选的，可以将显示灰阶值组中的最小显示灰阶值匹配至目标灰阶值组中 的最小目标灰阶值，将显示灰阶值组中的显示灰阶值匹配至对应的目标灰阶值，将显示灰阶值组中的最大显示灰阶值匹配至最大目标灰阶值。
表1红色像素单元显示灰阶值组与目标灰阶值组的对应关系
Figure PCTCN2018072824-appb-000001
示例性的，表1为本申请实施例提供的一种红色像素单元的显示灰阶值组与目标灰阶值组的对应关系。以显示面板中的红色像素单元R素单元为例，可以设 定红色像素单元R对应的显示灰阶值组和目标灰阶值组的位数均为8比特，从表1中可以看出，显示面板的红色像素单元R的显示灰阶值组与目标灰阶值组的灰阶值的个数相等，为了避免高灰阶值导致显示面板中红色像素单元R在大视角情况下色偏严重的问题，将表中的红色像素单元R对应的显示灰阶值组匹配至红色像素单元R对应的目标灰阶值组。示例性的，可以设置红色像素单元R对应的目标灰阶值组的最大目标灰阶值为220。由于红色像素单元R对应的目标灰阶值组中的最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值255，消除了大视角情况下高灰阶对红色像素单元R色彩饱和度的影响，优化了显示装置的显示效果。
示例性的，蓝色像素单元仍然可以利用该蓝色像素单元对应的显示灰阶值组进行显示，同样的，绿色像素单元也可以利用绿色像素单元对应的显示灰阶值组进行显示。对于显示灰阶值组中大于最小显示灰阶值，小于最大显示灰阶值的显示灰阶值，可以根据显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值得到与设定像素单元对应的显示灰阶值组中的目标灰阶值。
可选的，可以设置目标灰阶值组中的最小目标灰阶值与显示灰阶值组中的最小显示灰阶值相等。由于显示面板中设定像素单元对应的目标灰阶值组中的最大目标灰阶值小于设定像素单元对应的显示灰阶值组中的最大显示灰阶值，为了提高显示面板的显示解析度，可以设置设定像素单元对应的目标灰阶值组中的最小目标灰阶值等于显示灰阶值组中的最小显示灰阶值0，这样使得设定像素单元对应的目标灰阶值组中的最小目标灰阶值与最大目标灰阶值之间的跨度较大，在消除了大视角情况下高灰阶对设定像素单元色彩饱和度的影响的同时，提高了显示面板的显示解析度。
在步骤S140、根据目标灰阶值组驱动显示面板中的设定像素单元进行显示。
根据上述步骤得到的显示面板中的设定像素单元对应的目标灰阶值组驱动显示面板中的设定像素单元进行显示，由于设定像素单元对应的目标灰阶值组中的最大目标灰阶值小于设定像素单元对应的显示灰阶值组中的最大显示灰阶值，避免了大视角情况下高灰阶影响设定像素单元色彩饱和度导致的设定像素单元的色偏问题，提高了显示装置的显示效果。
可选的，图3为本申请实施例提供的另一种显示装置的驱动方法的流程示意图，与上述实施例不同的是，该驱动方法还包括如下步骤S250。
在步骤S250、根据显示灰阶值组中的最大显示灰阶值和目标灰阶值组中的最大目标灰阶值调整红色背光模块的亮度。其中，调整后的红色背光模块的亮度与调整前的红色背光模块的亮度的比值，等于显示灰阶值组中的最大显示灰阶值对应的亮度与目标灰阶值组中的最大目标灰阶值对应的亮度的比值。
可选地，由于显示面板中的设定像素单元对应的目标灰阶值组中的最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值，以显示面板中的红色像素单元R为例，可以设定红色像素单元R对应的显示灰阶值组和目标灰阶值组的位数均为8比特，最大目标灰阶值为220为例，即显示面板中的红色像素单元R的最大亮度由原来255灰阶对应的亮度RL255降低为220灰阶对应的亮度RL220，需要辅以红色像素单元R对应的背光亮度提升才能维持显示面板中的原白点由255灰阶红色像素单元R、255灰阶蓝色像素单元B和255灰阶绿色像素单元G混色形成。示例性的，可以设定调整前的红色背光模块的亮度为A，调整后的红色背光模块的亮度为A’，则A和A’需要满足以下公式：
Figure PCTCN2018072824-appb-000002
即调整后的红色背光模块的亮度A’与调整前的红色背光模块的亮度A的比值，等于显示灰阶值组中的最大显示灰阶值对应的亮度RL255与目标灰阶值组中 的最大目标灰阶值对应的亮度的比值RL220。
图4为本申请实施例提供的一种显示装置的结构示意图。如图4所示，显示装置包括显示灰阶值组获取模块11、目标灰阶值获取模块12、匹配模块13、显示面板14、驱动模块15以及背光模块(未示出)。目标灰阶值获取模块12与显示灰阶值组获取模块11和匹配模块13电连接，驱动模块15与匹配模块13和显示面板14电连接。背光模块位于显示面板下方，设置为为显示面板提供光源。显示灰阶值组获取模块11设置为获取显示面板中的设定像素单元对应的显示灰阶值组。目标灰阶值获取模块12设置为根据显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与显示灰阶值组中的显示灰阶值一一对应的目标灰阶值，显示灰阶值组中的显示灰阶值大于最小显示灰阶值，小于最大显示灰阶值。匹配模块13设置为根据目标灰阶值，将显示灰阶值组匹配至目标灰阶值组，显示灰阶值组与目标灰阶值组中的灰阶值个数相等，最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值。驱动模块14设置为根据目标灰阶值组驱动显示面板14中的设定像素单元进行显示。
可选的，匹配模块13还可以设置为将显示灰阶值组中的最小显示灰阶值匹配至最小目标灰阶值；将显示灰阶值组中的显示灰阶值匹配至对应的目标灰阶值；将显示灰阶值组中的最大显示灰阶值匹配至最大目标灰阶值。
示例性的，显示装置例如可以为液晶显示装置，图5为本申请实施例提供的一种液晶显示装置的结构示意图。如图5所示，显示装置可以包括显示面板以及位于显示面板下方的背光模块15。背光模块15设置为向显示面板提供显示用的光源。显示面板可以包括临近背光模块的阵列基板16，以及位于阵列基板16远离背光模块15一侧的彩膜基板17(仅示出部分区域)。其中，背光模块15可以包 括多个红色背光模块151、绿色背光模块152以及蓝色背光模块153，彩膜基板17上则可以对应包括多个像素单元171(图4中示例性地示出了4个像素单元171)，每个像素单元171包括红色像素单元R、绿色像素单元G和蓝色像素单元B。背光模块15发光的光可以通过阵列基板16上的开口区161照射至位于阵列基板16和彩膜基板17之间的液晶层(未示出)上，实现液晶显示面板的正常功能。
可选的，显示装置还可以包括背光亮度调整模块和第一控制模块，背光亮度调整模块可以根据显示灰阶值组中的最大显示灰阶值和目标灰阶值组中的最大目标灰阶值调整红色背光模块的亮度；第一控制模块可以控制调整后的红色背光模块的亮度与调整前的红色背光模块的亮度的比值，等于显示灰阶值组中的最大显示灰阶值对应的亮度与目标灰阶值组中的最大目标灰阶值对应的亮度的比值。
需要说明的是，本申请实施例示附图只是示例性的表示各元件的大小，并不代表显示面板中各元件的实际尺寸。
可选的，显示装置还可以包括第二控制模块，第二控制模块可以控制显示灰阶值组中的最小显示灰阶值与目标灰阶值组中的最小目标灰阶值相同。
图6为本申请实施例提供的另一种显示装置的驱动方法的流程示意图。驱动方法可以应用在需要驱动显示装置进行平面显示的场景，可以由本申请实施例提供的显示装置来执行。该方法包括步骤S310至S360。
在步骤S310、获取显示面板中的设定像素单元对应的显示灰阶值组。
在步骤S320、根据显示灰阶值组中的灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与显示灰阶值组中的显示灰阶值一一对应的目标灰阶值；其中，显示灰阶值组中的显示大于最小显示灰阶值，小于最大显示灰阶值。
在步骤S330、将显示灰阶值组中的最小显示灰阶值匹配至最小目标灰阶值。
在步骤S340、将显示灰阶值组中的显示灰阶值匹配至对应的目标灰阶值。
在步骤S350、将显示灰阶值组中的最大显示灰阶值匹配至最大目标灰阶值。其中，最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值。
在步骤S360、根据目标灰阶值组驱动显示面板中的设定像素单元进行显示。
本申请实施例提供了一种显示装置的驱动方法及显示装置，通过将设定像素单元对应的显示灰阶值组匹配至目标灰阶值组，且设置目标灰阶值组中的最大目标灰阶值小于显示灰阶值组中的最大显示灰阶值，根据匹配后的目标灰阶值组驱动显示面板中的设定像素单元进行显示，删除了显示灰阶值组中的部分高灰阶值，消除了大视角情况下高灰阶对设定像素单元色彩饱和度的影响，优化了显示装置的显示效果。
注意，上述仅为本申请的较佳实施例及所运用技术原理。本领域技术人员会理解，本申请不限于这里的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本申请的保护范围。因此，虽然通过以上实施例对本申请进行了较为详细的说明，但是本申请不仅仅限于以上实施例，在不脱离本申请构思的情况下，还可以包括更多其他等效实施例，而本申请的范围由所附的权利要求范围决定。

Claims (20)

  1. 一种显示装置的驱动方法，其中，所述显示装置包括显示面板，所述显示面板包括设定像素单元，所述显示装置的驱动方法包括：
    获取显示面板中的设定像素单元对应的显示灰阶值组；
    根据所述显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与所述显示灰阶值组中的显示灰阶值一一对应的目标灰阶值，其中，所述显示灰阶值大于所述显示灰阶值组中的最小显示灰阶值，小于所述显示灰阶值组中的最大显示灰阶值；
    根据所述目标灰阶值将所述显示灰阶值组匹配至目标灰阶值组，其中，所述显示灰阶值组与所述目标灰阶值组中的灰阶值个数相等，所述最大目标灰阶值小于所述最大显示灰阶值；以及
    根据所述目标灰阶值组驱动所述显示面板中的所述设定像素单元进行显示。
  2. 根据权利要求1所述的驱动方法，其中，所述设定像素单元包括红色像素单元。
  3. 根据权利要求1所述的驱动方法，其中，所述将所述显示灰阶值组匹配至目标灰阶值组包括：
    将所述显示灰阶值组中的最小显示灰阶值匹配至所述最小目标灰阶值；
    将所述显示灰阶值组中的显示灰阶值匹配至对应的目标灰阶值；以及
    将所述显示灰阶值组中的最大显示灰阶值匹配至所述最大目标灰阶值。
  4. 根据权利要求1所述的驱动方法，还包括：
    根据所述显示灰阶值组中的最大显示灰阶值和所述目标灰阶值组中的最大目标灰阶值调整红色背光模块的亮度；
    其中，调整后的红色背光模块的亮度与调整前的红色背光模块的亮度的比值，等于所述显示灰阶值组中的最大显示灰阶值对应的亮度与所述目标灰阶值 组中的最大目标灰阶值对应的亮度的比值。
  5. 根据权利要求1所述的驱动方法，其中，所述显示灰阶值组中的最小显示灰阶值与所述目标灰阶值组中的最小目标灰阶值相同。
  6. 根据权利要求1所述的驱动方法，其中，所述设定像素单元对应的显示灰阶值组的位数为8比特。
  7. 根据权利要求6所述的驱动方法，其中，所述显示面板中的设定像素单元对应的显示灰阶值组包括256个灰阶值。
  8. 根据权利要求7所述的驱动方法，其中，显示灰阶值组中的最小显示灰阶值为0，最大显示灰阶值为255。
  9. 根据权利要求1所述的驱动方法，其中，像素单元对应的灰阶值越大，像素单元的亮度越大。
  10. 一种显示装置，包括：
    显示面板，其中，所述显示面板包括设定像素单元；
    显示灰阶值组获取模块，设置为获取显示面板中的设定像素单元对应的显示灰阶值组；
    目标灰阶值获取模块，与所述显示灰阶值组获取模块电连接，设置为根据所述显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与所述显示灰阶值组中的显示灰阶值一一对应的目标灰阶值，其中，所述显示灰阶值大于所述显示灰阶值组中的最小显示灰阶值，小于所述显示灰阶值组中的最大显示灰阶值；
    匹配模块，与所述目标灰阶值获取模块电连接，设置为根据所述目标灰阶值将所述显示灰阶值组匹配至目标灰阶值组，所述显示灰阶值组与所述目标灰阶值组中的灰阶值个数相等，所述最大目标灰阶值小于所述最大显示灰阶值；
    驱动模块，与所述匹配模块和显示面板电连接，设置为根据所述目标灰阶值组驱动所述显示面板中的所述设定像素单元进行显示；以及
    背光模块，设置于所述显示面板下方，设置为为所述显示面板提供光源。
  11. 根据权利要求10所述的显示装置，其中，所述匹配模块还设置为：
    将所述显示灰阶值组中的最小显示灰阶值匹配至所述最小目标灰阶值；
    将所述显示灰阶值组中的显示灰阶值匹配至对应的目标灰阶值；
    将所述显示灰阶值组中的最大显示灰阶值匹配至所述最大目标灰阶值。
  12. 根据权利要求10所述的显示装置，还包括：
    背光亮度调整模块，设置为根据所述显示灰阶值组中的最大显示灰阶值和所述目标灰阶值组中的最大目标灰阶值调整红色背光模块的亮度；
    第一控制模块，设置为控制调整后的红色背光模块的亮度与调整前的红色背光模块的亮度的比值，等于所述显示灰阶值组中的最大显示灰阶值对应的亮度与所述目标灰阶值组中的最大目标灰阶值对应的亮度的比值。
  13. 根据权利要求10所述的显示装置，还包括：
    第二控制模块，设置为控制所述显示灰阶值组中的最小显示灰阶值与所述目标灰阶值组中的最小目标灰阶值相同。
  14. 根据权利要求10所述的显示装置，其中，所述设定像素单元对应的显示灰阶值组的位数为8比特。
  15. 根据权利要求14所述的显示装置，其中，所述显示面板中的设定像素单元对应的显示灰阶值组包括256个灰阶值。
  16. 根据权利要求15所述的显示装置，其中，显示灰阶值组中的最小显示灰阶值为0，最大显示灰阶值为255。
  17. 根据权利要求12所述的驱动方法，其中，像素单元对应的灰阶值越大， 像素单元的亮度越大。
  18. 一种显示装置的驱动方法，其中，所述显示装置包括显示面板，所述显示面板包括设定像素单元，所述显示装置的驱动方法包括：
    获取显示面板中的设定像素单元对应的显示灰阶值组；
    根据所述显示灰阶值组中的显示灰阶值、最小目标灰阶值对应的亮度、最大目标灰阶值对应的亮度以及设定伽马值，获取与所述显示灰阶值组中的显示灰阶值一一对应的目标灰阶值，其中，所述显示灰阶值大于所述显示灰阶值组中的最小显示灰阶值，小于所述显示灰阶值组中的最大显示灰阶值；
    将所述显示灰阶值组中的最小显示灰阶值匹配至所述最小目标灰阶值；
    将所述显示灰阶值组中的显示灰阶值匹配至对应的目标灰阶值；
    将所述显示灰阶值组中的最大显示灰阶值匹配至所述最大目标灰阶值；
    其中，所述最大目标灰阶值小于所述最大显示灰阶值；
    根据所述目标灰阶值组驱动所述显示面板中的所述设定像素单元进行显示。
  19. 根据权利要求18所述的显示装置的驱动方法，其中，所述设定像素单元对应的显示灰阶值组的位数为8比特。
  20. 根据权利要求19所述的显示装置的驱动方法，其中，所述显示面板中的设定像素单元对应的显示灰阶值组包括256个灰阶值，显示灰阶值组中的最小显示灰阶值为0，最大显示灰阶值为255。
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