CN112885288B - Display device and driving method thereof - Google Patents

Display device and driving method thereof Download PDF

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Publication number
CN112885288B
CN112885288B CN202110243531.3A CN202110243531A CN112885288B CN 112885288 B CN112885288 B CN 112885288B CN 202110243531 A CN202110243531 A CN 202110243531A CN 112885288 B CN112885288 B CN 112885288B
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display device
attenuation coefficient
pixel
gray scale
determining
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CN112885288A (en
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窦维
黄泰钧
付建国
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Publication of CN112885288A publication Critical patent/CN112885288A/en
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/2007Display of intermediate tones
    • G09G3/2074Display of intermediate tones using sub-pixels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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 using controlled light sources
    • G09G3/30Control 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 using controlled light sources using electroluminescent panels
    • G09G3/32Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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 using controlled light sources
    • G09G3/30Control 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 using controlled light sources using electroluminescent panels
    • G09G3/32Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0271Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping

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  • Engineering & Computer Science (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

The application provides a display device and a driving method thereof, when the display device is to display a picture, the driving method of the display device obtains the position information of each pixel in the picture to be displayed of the display device, and obtains the gray scale attenuation coefficient corresponding to each pixel according to the position information of each pixel, so that the actual display gray scale of each pixel is determined according to the gray scale to be displayed and the gray scale attenuation coefficient of each pixel, and the actual display gray scale of at least one pixel positioned in the edge area is smaller than the gray scale to be displayed, thereby reducing the power consumption of the display device, and as the sensitivity of human eyes to brightness is attenuated from the middle area to two sides when the display device is watched, the power consumption of the display device is reduced, and the display effect is not influenced.

Description

Display device and driving method thereof
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display device and a driving method thereof.
Background
In the development process of the display device, an OLED (Organic Light-Emitting Diode) display device displays through self-luminescence of a luminescent material, and an LED (Light-Emitting Diode) display device displays through luminescence of an LED, but in order to improve a display effect, corresponding voltage data is input to all display pixels during display, so that a display panel displays a certain gray scale, but during display, the power consumption of the display panel is higher due to the consistent display brightness of the whole surface of the display panel.
Therefore, the conventional display device has a technical problem that display brightness of the display panel is uniform to improve display effect, resulting in higher power consumption of the display panel.
Disclosure of Invention
The embodiment of the application provides a display device and a driving method thereof. The display device is used for solving the technical problem that the power consumption of the display panel is high because the display brightness of the display panel is consistent for improving the display effect of the existing display device.
The embodiment of the application provides a display device driving method, which comprises the following steps:
acquiring a picture to be displayed of a display device; the picture to be displayed comprises gray scales to be displayed of each pixel;
acquiring position information of each pixel in a picture to be displayed of the display device;
acquiring gray scale attenuation coefficients corresponding to the pixels according to the position information of the pixels;
determining the actual display gray scale of each pixel according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient; at least one pixel positioned in the edge area of the display device has an actual display gray level smaller than the gray level to be displayed;
each pixel is driven to display a screen using the actual display gray scale of each pixel.
In some embodiments, the step of obtaining the position information of each pixel in the frame to be displayed of the display device includes:
judging whether the picture to be displayed of the display device meets a preset attenuation condition or not according to the picture to be displayed of the display device;
and when the picture to be displayed of the display device meets a preset attenuation condition, acquiring the position information of each pixel in the picture to be displayed of the display device.
In some embodiments, the step of obtaining the position information of each pixel in the frame to be displayed of the display device includes:
acquiring the resolution of a display device, and determining row information and column information of pixels of the display device according to the resolution of the display device;
partitioning a display device according to row information and column information of pixels of the display device;
position information of pixels of a display device is determined according to a partition of the display device.
In some embodiments, the step of obtaining the gray-scale attenuation coefficient corresponding to each pixel according to the position information of each pixel includes:
acquiring a minimum attenuation coefficient of the display device;
and determining the gray scale attenuation coefficient of each pixel according to the minimum attenuation coefficient of the display device and the position information of each pixel.
In some embodiments, the step of determining the gray-scale attenuation coefficient of each pixel according to the minimum attenuation coefficient of the display device and the position information of each pixel includes:
determining a unit attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device;
the gray scale attenuation coefficient of each pixel is determined according to the unit attenuation coefficient of the display device and the position information of each pixel of the display device.
In some embodiments, the step of determining the unit attenuation coefficient of the display device according to the position information of the pixel of the display device and the minimum attenuation coefficient of the display device includes:
determining a row minimum attenuation coefficient and a column minimum attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device;
determining a row unit attenuation coefficient and a column unit attenuation coefficient of the display device according to the row minimum attenuation coefficient and the column minimum attenuation coefficient of the display device and the position information of the pixels of the display device;
the unit attenuation coefficient of the display device is determined according to the row unit attenuation coefficient and the column unit attenuation coefficient of the display device.
In some embodiments, the step of determining the gray-scale attenuation coefficient of each pixel according to the unit attenuation coefficient of the display device and the position information of the pixel of the display device includes:
determining a line gray scale attenuation coefficient of each pixel according to the line unit attenuation coefficient of the display device and the line information of each pixel;
determining a column gray scale attenuation coefficient of each pixel according to the column single-bit attenuation coefficient of the display device and column information of each pixel;
and determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient of each pixel and the column gray scale attenuation coefficient of each pixel.
In some embodiments, the step of determining the gray-scale attenuation coefficient of each pixel according to the unit attenuation coefficient of the display device and the position information of the pixel of the display device includes:
determining row information and column information of each pixel according to the position information of each pixel;
determining a row gray scale attenuation coefficient and a column gray scale attenuation coefficient of each pixel according to the row information and the column information of each pixel and the unit attenuation coefficient of the display device;
and determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel.
In some embodiments, the step of determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel includes:
the product of the row gray-scale attenuation coefficient and the column gray-scale attenuation coefficient of each pixel is used as the gray-scale attenuation coefficient of each pixel.
Meanwhile, an embodiment of the present application provides a display device including:
the first acquisition module is used for acquiring a picture to be displayed of the display device; the picture to be displayed comprises gray scales to be displayed of each pixel;
the second acquisition module is used for acquiring the position information of each pixel in a picture to be displayed of the display device;
the third acquisition module is used for acquiring gray scale attenuation coefficients corresponding to the pixels according to the position information of the pixels;
the determining module is used for determining the actual display gray scale of each pixel according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient; at least one pixel positioned in the edge area of the display device has an actual display gray level smaller than the gray level to be displayed;
and the driving module is used for driving each pixel to display a picture by using the actual display gray scale of each pixel.
The beneficial effects are that: the application provides a display device and a driving method thereof, wherein the driving method of the display device firstly obtains a picture to be displayed of the display device; then, acquiring position information of each pixel in a picture to be displayed of the display device, acquiring a gray scale attenuation coefficient corresponding to each pixel according to the position information of each pixel, determining actual display gray scale of each pixel according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient, and driving the picture to be displayed of each pixel by using the actual display gray scale of each pixel; when the display device is to display a picture, the position information of each pixel in the picture to be displayed of the display device is obtained, and the gray scale attenuation coefficient corresponding to each pixel is obtained according to the position information of each pixel, so that the actual display gray scale of each pixel is determined according to the gray scale to be displayed and the gray scale attenuation coefficient of each pixel, at least one pixel in the edge area is smaller than the gray scale to be displayed, the power consumption of the display device is reduced, and the sensitivity of human eyes to brightness is attenuated from the middle area to two sides when the display device is watched, so that the power consumption of the display device is reduced, and meanwhile, the display effect is not influenced.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a conventional display device.
Fig. 2 is a flow chart of a driving method of a display device according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a first structure of a display device according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a second structure of the display device according to the embodiment of the present application.
Fig. 5a is a schematic diagram of a first distribution of attenuation coefficients of pixels of a display device according to an embodiment of the present disclosure.
Fig. 5b is a schematic diagram of a second distribution of attenuation coefficients of pixels of a display device according to an embodiment of the present disclosure.
Fig. 6 is a schematic diagram of a position and a brightness value of a display device according to an embodiment of the present disclosure.
Fig. 7 is a schematic diagram of a third structure of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The embodiment of the application aims at solving the technical problem that the display brightness of the display panel is consistent in order to improve the display effect of the existing display device, so that the power consumption of the display panel is high.
As shown in fig. 1, in the conventional display device, in order to improve uniformity of a display screen, for example, when a certain solid-color screen is displayed, the first region 11, the second region 12, the third region 13 and the fourth region 14 of the display device 1 all display the same gray scale, so that the uniformity of the whole display screen is maintained, but in this process, power consumption of the display panel is high, so that in the conventional display device, in order to improve the display effect, the display brightness of the display panel is consistent, and the power consumption of the display panel is high.
As shown in fig. 2, an embodiment of the present application provides a display device driving method, including:
s1: acquiring a picture to be displayed of a display device; the picture to be displayed comprises gray scales to be displayed of each pixel;
s2: acquiring position information of each pixel in a picture to be displayed of the display device;
s3: acquiring gray scale attenuation coefficients corresponding to the pixels according to the position information of the pixels;
s4: determining the actual display gray scale of each pixel according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient; at least one pixel positioned in the edge area of the display device has an actual display gray level smaller than the gray level to be displayed;
s5: each pixel is driven to display a screen using the actual display gray scale of each pixel.
According to the embodiment of the application, the position information of each pixel in the picture to be displayed of the display device is obtained, and the corresponding gray scale attenuation coefficients are obtained according to the position information of each pixel, so that the actual display gray scale of each pixel can be determined according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient, and the actual display gray scale of at least one pixel is smaller than the gray scale to be displayed, so that the power consumption of the display device is reduced, and the sensitivity of human eyes to brightness is attenuated from the middle area to two sides when the display device is watched due to the fact that the pixel is located in the edge area of the display device, and therefore the display effect of the display device is not affected.
In one embodiment, as shown in fig. 3, the display device 2 includes a middle area 25, a first edge area 21, a second edge area 22, a third edge area 23, and a fourth edge area 24, where the middle area 25 in fig. 3 is two areas intersecting horizontally and vertically, and the middle area 25 may include two columns of pixels in the horizontal direction and two columns of pixels in the vertical direction, for example, the display panel includes 3840 columns of pixels in the vertical direction and 2160 columns of pixels in the vertical direction, and then the middle area 25 is 1920 columns and 1921 columns of pixels in the vertical direction, 1080 columns and 1081 columns of pixels in the vertical direction, so that the areas of the first edge area 21, the second edge area 22, the third edge area 23, and the fourth edge area 24 are equal and axisymmetric or centrosymmetric with respect to the middle area, but the embodiment of the present application is not limited thereto, and the middle area may also include only 4 pixels at the intersecting position of the middle area in fig. 3, or the middle area includes a plurality of columns of pixels in the horizontal direction and vertical direction.
It should be noted that, the to-be-displayed picture refers to a picture to be displayed on the display panel, and the display brightness of the display picture is determined according to the to-be-displayed gray scale of each pixel of the display panel, that is, according to the voltage value of each pixel.
Note that, the actual display gray scale refers to the actual driving voltage of the display panel obtained after attenuation, and since the gray scale attenuation coefficient includes 1, the actual display gray scale includes a display gray scale equal to or smaller than the gray scale to be displayed.
The edge region refers to a display region other than the middle region in the display region of the display device, and for example, the first edge region 21, the second edge region 22, the third edge region 23, and the fourth edge region 24 in fig. 3 are all edge regions.
The position information of the pixel includes a relative position of the pixel in the display panel, a position of a certain pixel may be set as a reference, and position information of other pixels may be determined by determining a position of a certain pixel, for example, by numbering the data line and the scan line in the following embodiment, so that row information and column information of the pixel may be determined according to the numbers of the data line and the scan line, so that a relative position between the pixels may be further determined, and thus the position information of the pixel may be determined.
Note that, the gray-scale attenuation coefficient refers to an attenuation coefficient of a display gray scale of the display panel, for example, a voltage value corresponding to a certain display gray scale is 5 volts, and a voltage value corresponding to a display gray scale after attenuation is 4 volts, where the gray-scale attenuation coefficient is 4/5=0.8, but the embodiment of the present application is not limited thereto, and the gray-scale attenuation coefficient may be determined according to a luminance value.
In one embodiment, when the position information of each pixel in the frame to be displayed of the display device is obtained, whether the frame to be displayed meets the preset attenuation condition may be determined first, and when the frame to be displayed meets the preset attenuation condition, the position information of each pixel in the frame to be displayed is obtained, where the steps include: judging whether the picture to be displayed of the display device meets a preset attenuation condition or not according to the picture to be displayed of the display device; and when the picture to be displayed of the display device meets a preset attenuation condition, acquiring the position information of each pixel in the picture to be displayed of the display device.
In one embodiment, when judging whether the to-be-displayed frame of the display device meets the preset attenuation condition according to the to-be-displayed frame of the display panel, the preset attenuation condition of the display device can be determined through the maximum display gray level of the display device, and the steps include: obtaining the maximum display gray scale of the display device; determining a preset attenuation condition of the display device according to the maximum display gray level of the display device; specifically, assuming that the maximum display gray level of the display device is 256 gray levels, when the display device displays, for example, when displaying the 5 th gray level, even though the power consumption reduction effect of the display panel is not obvious by displaying different gray level values in different areas of the display panel, the difficulty of adjustment is increased in the adjustment process, so that when the display panel displays the 5 th gray level or less, the adjustment of the gray level of the display device is not performed, and the display device displays the gray level to be displayed, that is, the preset attenuation condition at this time is that the display device displays a picture higher than the 5 th gray level, or the brightness value of the display device is larger than the brightness value corresponding to the 5 th gray level; however, the embodiments of the present application are not limited thereto, for example, in order to maximally reduce the power consumption of the display device, when the display device is displaying a picture, that is, the display device may perform gray scale adjustment, for example, the maximum display gray scale of the display device is 256 gray scales, the preset attenuation condition is set to display a picture higher than the 1 st gray scale on the display device, or the brightness of the display device is greater than the brightness value corresponding to the 1 st gray scale, that is, except the 1 st gray scale (the display panel is displayed in full black), the display device may perform adjustment of the display gray scale, thereby reducing the power consumption of the display device.
In one embodiment, when the position information of each pixel in the to-be-displayed picture of the display device is acquired, the resolution of the display device may be acquired first, and the number of pixels of the display device and the row information and the column information of the pixels are determined according to the resolution of the display panel, so that the display device is partitioned according to the row information and the column information of the pixels of the display panel, so that the position information of the pixels of the display device is determined according to the partition of the display device; specifically, for example, the resolution of the display device is 3840×2160, it may be known that the display device includes 3840 columns of pixels 413 and 2160 rows of pixels 413, that is, the column data of the pixels is 3840, and the row data is 2160, and at this time, in order to make the edge regions of the display device axisymmetric or centrosymmetric about the middle region, the numbers of the data lines 411 are 1 to 3840, the numbers of the scan lines 412 are 1 to 2160, for example, the two columns of pixels numbered 1920 and 1921 and the two rows of pixels numbered 1080 and 1081 are the middle region 45, and the edge regions include the clockwise first edge region 41, the second edge region 42, the third edge region 43, and the fourth edge region 44, and the number of pixels of each of the first edge region 41 to the fourth edge region 44 is the same, so that the position information of each pixel may be obtained according to the numbers of each pixel.
In an embodiment, when numbering the data lines and the scan lines to determine the position information of each pixel, the middle area may be determined first, and then numbered from the middle area to both sides sequentially, for example, two rows of pixels numbered 1920 and 1921 and two rows of pixels numbered 1080 and 1081 are used as the middle area 45 in fig. 4, the first edge area 41 may be numbered 1 to 1919 from the 1921 st to 3840 th row of pixels, the fourth edge area 44 may be numbered 1 to 1919 from the 1920 to 1 th row of pixels, and sequentially increased in the direction of the edge area with the number close to the middle area, so that when determining the attenuation coefficient of each pixel, since the four edge areas are axisymmetric or centrosymmetric with respect to the middle area, only the attenuation coefficient of each pixel of one area needs to be known, since the attenuation coefficients of the pixels in the four edge regions are the same, the attenuation coefficients of the pixels in one edge region can be known by recording the attenuation coefficients of the pixels in all the edge regions, and assuming that the attenuation coefficients of the 1080 th row pixels and the 1920 th column pixels are divided into the first regions, the attenuation coefficients to be stored in total or the actual display gray scale is 1080×1920= 2073600, further, in order to reduce the number of data, in consideration of the low influence on the display effect, the attenuation coefficients of the 8 column pixels are used as the middle regions, and in this case, the attenuation coefficients to be stored in total or the actual display gray scale is 1080×240= 259200, but the embodiment of the application is not limited thereto, and is set according to the acquisition of the data and the display effect.
In one embodiment, taking the display device as a non-axisymmetric display panel as an example, for example, the width and the height of two sides of the display device are not consistent, when the area of the display device is set, the pixel of the center point of the display device is taken as the pixel of the center area, so that the brightness of the middle area of the display device to the edge area is reduced, the display effect of the display device is not affected, and meanwhile, the power consumption of the display device is reduced.
In one embodiment, when the gray-scale attenuation coefficient corresponding to each pixel is obtained according to the position information of each pixel, the minimum attenuation coefficient of the display device can be obtained first, and then the gray-scale attenuation coefficient of each pixel is determined according to the minimum attenuation coefficient of the display device and the position information of each pixel; specifically, for example, if the pixels sequentially attenuate in the direction from the middle area to the edge area, the luminance values of the pixels in the first column from left to right or the columns corresponding to the minimum attenuation coefficient are the smallest, taking the pixel number and arrangement in fig. 4 as an example, and taking the 1 pixel corresponding to the 1 gray scale attenuation coefficient as an example, the luminance values of the four pixels in the 1 st column, the 1 st row, the 1 st column, the 2160 th row, and the 3840 th column in the 2160 th row are the smallest, that is, if the gray scale attenuation coefficient of the four pixels is the smallest attenuation coefficient, or if the 8 columns of pixels are one gray scale attenuation coefficient, the gray scale attenuation coefficient of the corresponding rows and columns is the smallest attenuation coefficient, and if the minimum attenuation coefficient is 0.8, the attenuation coefficient of the middle area is 1, that is, the gray scale attenuation coefficient of the middle area is not attenuated, and the gray scale attenuation coefficient of each pixel can be obtained sequentially from the middle area to the edge area according to the position information of the pixels.
In one embodiment, the minimum attenuation coefficient of the display device is determined according to the sensitivity of the human eye to the luminance, that is, in order not to affect the display effect, assuming that the sensitivity of the human eye is the lowest on a column of pixels at the edge of the display area, the column of pixels at the edge of the display area may be made to correspond to the minimum attenuation coefficient at this time, so that the luminance attenuation of the display device corresponds to the sensitivity of the human eye to the luminance, thereby reducing the power consumption of the display device while not affecting the display effect.
In one embodiment, when determining the gray-scale attenuation coefficient of each pixel according to the minimum attenuation coefficient of the display device and the position information of each pixel, the unit attenuation coefficient of the display device may be determined according to the position information of the pixel of the display device and the minimum attenuation coefficient of the display device, and then the gray-scale attenuation coefficient of each pixel may be determined according to the unit attenuation coefficient of the display device and the position information of each pixel of the display device, which includes: determining a unit attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device; determining gray scale attenuation coefficients of pixels according to the unit attenuation coefficients of the display device and the position information of the pixels of the display device; specifically, for example, the minimum attenuation coefficient is 0.8, the position information of the pixel of the display device includes the resolution of the display device and the position information of the pixel of the middle area, which is 3840 to 2160, and the middle area is two columns of pixels numbered 1920 and 1921 and two rows of pixels numbered 1080 and 1081 in fig. 4, so that the gray-scale attenuation coefficient of each pixel can be determined according to the position information of each pixel and the unit attenuation coefficient.
In one embodiment, when determining the unit attenuation coefficient of the display device according to the position information of the pixel of the display device and the minimum attenuation coefficient of the display device, considering that the line information and the column information of the display device are different, the line minimum attenuation coefficient and the column minimum attenuation coefficient of the display device may be determined according to the position information of the pixel of the display device and the minimum attenuation coefficient of the display device, then the line unit attenuation coefficient and the column unit attenuation coefficient of the display device may be determined according to the line minimum attenuation coefficient and the column minimum attenuation coefficient and the position information of the pixel of the display device, and then the line unit attenuation coefficient and the column unit attenuation coefficient of the display device may be determined, which includes: determining a row minimum attenuation coefficient and a column minimum attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device; determining a row unit attenuation coefficient and a column unit attenuation coefficient of the display device according to the row minimum attenuation coefficient and the column minimum attenuation coefficient of the display device and the position information of the pixels of the display device; determining a unit attenuation coefficient of the display device according to the row unit attenuation coefficient and the column unit attenuation coefficient of the display device; specifically, for example, the minimum attenuation coefficient is 0.63, the line minimum attenuation coefficient of the display device is 0.7, and the column minimum attenuation coefficient is 0.9, which are obtained according to the position information of the pixels of the display device, so that the line unit attenuation coefficient and the column unit attenuation coefficient of the display device can be respectively determined according to the line minimum attenuation coefficient and the column minimum attenuation coefficient, and the number of lines and the number of columns of the display device, thereby determining the unit attenuation coefficient of the display device.
In one embodiment, when determining the gray scale attenuation coefficient of each pixel according to the unit attenuation coefficient of the display device and the position information of the pixel of the display device, the row gray scale attenuation coefficient of the pixel may be determined according to the row unit attenuation coefficient of the display device and the row information of the pixel, and the column gray scale attenuation coefficient of the pixel may be determined according to the column unit attenuation coefficient of the display device and the column information of the pixel, so as to determine the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of the pixel, which includes: determining a line gray scale attenuation coefficient of each pixel according to the line unit attenuation coefficient of the display device and the line information of each pixel; determining a column gray scale attenuation coefficient of each pixel according to the column single-bit attenuation coefficient of the display device and column information of each pixel; determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient of each pixel and the column gray scale attenuation coefficient of each pixel; specifically, assuming that the resolution of the display device is m×n, the line minimum attenuation coefficient of the display device is Xmin, the column minimum attenuation coefficient is Ymin, the attenuation coefficient of the middle area of the display device is 1, the numbers of the data lines of the display device increase sequentially from left to right, and the numbers of the scan lines increase sequentially from top to bottom, for example, in the numbering arrangement of fig. 4, when the two middle lines and two columns of the display device are taken as the middle area, each data in the fourth edge area is as follows, the line unit attenuation coefficient of the display device is x= (1-Xmin)/(n/2-1), the column unit attenuation coefficient is y= (1-Ymin)/(m/2-1), the line gray scale attenuation coefficient of the a-th line of the display device is a=1-a×x, and the column gray scale attenuation coefficient of the B-th line is b=1-b×y, so that the line gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel can be obtained, and the gray scale attenuation coefficient of each pixel can be determined.
In one embodiment, when determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel, the product of the row gray scale attenuation coefficient and the column gray scale attenuation coefficient may be used as the gray scale attenuation coefficient of each pixel, and the steps include: the gray scale attenuation coefficient of each pixel is defined as the gray scale attenuation coefficient of each pixel, i.e., the gray scale attenuation coefficient c= (1-a X) (1-b Y).
In one embodiment, when determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel, the square sum of the row gray scale attenuation coefficient and the column gray scale attenuation coefficient can be used as the gray scale attenuation coefficient of each pixel, i.e. the gray scale attenuation coefficient of each pixel
In the embodiment of the present application, the gray scale attenuation coefficient of each pixel is obtained in different manners, wherein a schematic diagram of the gray scale attenuation coefficient obtained by c= (1-a×x) (1-b×y) is shown in fig. 5a, and the gray scale attenuation coefficient obtained by c= (1-a×x) (1-b×y)The obtained gray scale attenuation coefficient is shown in fig. 5b, the abscissa in fig. 5a and 5b is COL, i.e. column, and the ordinate is ROW, and it can be seen from fig. 5a and 5b that the gray scale attenuation coefficient in fig. 5a is rectangular or rhombic from the middle area to the edge area, the gray scale attenuation coefficient in fig. 5b is elliptical from the middle area to the edge area, and the sensitivity curve of human eyes to brightness is elliptical from the middle area to the edge area, so that->The distribution of the obtained gray-scale attenuation coefficients is more accurate, but the data evolution process cannot be realized in an FPGA (Field-Programmable Gate Array, field programmable gate array), so that the process is neededThe gray-scale attenuation coefficient is searched by adopting the memory, and more memory resources are occupied, so that when the gray-scale attenuation coefficient is selected and obtained, the gray-scale attenuation coefficient can be obtained by selecting according to the requirement.
In one embodiment, when determining the gray scale attenuation coefficient of each pixel according to the unit attenuation coefficient of the display device and the position information of the pixel of the display device, the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel may be determined according to the row information and the column information of the pixel and the unit attenuation coefficient of the pixel, so that the gray scale attenuation coefficient of each pixel is determined according to the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel, which includes: determining row information and column information of each pixel according to the position information of each pixel; determining a row gray scale attenuation coefficient and a column gray scale attenuation coefficient of each pixel according to the row information and the column information of each pixel and the unit attenuation coefficient of the display device; determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel; specifically, the unit attenuation coefficient corresponding to the row information and the unit attenuation coefficient corresponding to the column information of each pixel are the same, so that the row gray scale attenuation coefficient and the column gray scale attenuation coefficient are determined according to the row information, the column information and the unit attenuation coefficient, and the gray scale attenuation coefficient of the pixel is determined.
As shown in fig. 6, the display device shown in fig. 4 is taken as an exampleAs an example of a determination formula of the gray-scale attenuation coefficient, fig. 6 (a) is a graph of sensitivity of human eyes to luminance and a position of a display device, fig. 6 (a) is a graph of abscissa of the position of the display device, and fig. 6 (b) is a graph of luminance value of the display device and the position of the display device at a certain display gray-scale in the prior art, fig. 6 (c) is a graph of luminance value of the display device and the position of the display device at a certain display gray-scale in the embodiment of the present application, fig. 6 (b) and (c) are graphs of the position of the display device, and fig. 6 (c) is a graph of ordinate of the position of the display deviceAs can be seen from fig. 6, in the luminance value of the display device, when a gray level is displayed in a certain gray level in the prior art, the display luminance of each area of the display device is the same, but in the embodiment of the present application, the display luminance of the middle area of the display device is the largest, and then sequentially decays from the middle area to the edge area in a curved manner.
In one embodiment, when the product of the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of each pixel is used as the gray scale attenuation coefficient of each pixel, the gray scale attenuation coefficient of the pixel can be determined in real time according to the position information of the pixel and the minimum attenuation coefficient, and then the actual display gray scale is obtained according to the gray scale to be displayed and the gray scale attenuation coefficient, so that the pixel display picture is driven by the actual display gray scale in real time.
In one embodiment, when the square sum of the row gray scale attenuation coefficient and the column gray scale attenuation coefficient of a pixel is used as the gray scale attenuation coefficient of each pixel, the gray scale attenuation coefficient of the pixel needs to be determined according to the minimum attenuation coefficient and the position information of the pixel, the gray scale attenuation coefficient of each pixel is stored under the address corresponding to the memory, when the pixel is driven, the gray scale attenuation coefficient needs to be read from the address corresponding to the memory through the position information of the pixel, then the actual display gray scale is determined according to the gray scale attenuation coefficient and the gray scale to be displayed, and each pixel in the display device is driven by adopting the actual display gray scale.
As shown in fig. 7, an embodiment of the present application provides a display device including:
a first obtaining module 721, configured to obtain a to-be-displayed screen of the display device; the picture to be displayed comprises gray scales to be displayed of each pixel;
a second obtaining module 722, configured to obtain position information of each pixel in a to-be-displayed frame of the display device;
a third obtaining module 723, configured to obtain, according to the position information of each pixel, a gray-scale attenuation coefficient corresponding to each pixel;
a determining module 724, configured to determine an actual display gray level of each pixel according to the gray level to be displayed of each pixel and the corresponding gray level attenuation coefficient; at least one pixel positioned in the edge area of the display device has an actual display gray level smaller than the gray level to be displayed;
the driving module 725 is configured to drive each pixel to display a frame using the actual display gray scale of each pixel.
According to the display device, each module of the display device obtains the position information of each pixel in a picture to be displayed of the display device, and obtains each corresponding gray scale attenuation coefficient according to the position information of each pixel, so that the actual display gray scale of each pixel can be determined according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient, and the actual display gray scale of at least one pixel is smaller than the gray scale to be displayed, so that the power consumption of the display device is reduced, and because the pixel is located in the edge area of the display device, when the display device is watched, the sensitivity of human eyes to brightness is attenuated from the middle area to two sides, and therefore the display effect of the display device is not affected.
In one embodiment, the display device includes a display panel 71 and a driving chip 72, and the driving chip 72 includes a first acquisition module 721, a second acquisition module 722, a third acquisition module 723, a determination module 724, and a driving module 725.
As can be seen from the above embodiments:
the embodiment of the application provides a display device and a driving method thereof, wherein the driving method of the display device firstly obtains a picture to be displayed of the display device; then, acquiring position information of each pixel in a picture to be displayed of the display device, acquiring a gray scale attenuation coefficient corresponding to each pixel according to the position information of each pixel, determining actual display gray scale of each pixel according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient, and driving the picture to be displayed of each pixel by using the actual display gray scale of each pixel; when the display device is to display a picture, the position information of each pixel in the picture to be displayed of the display device is obtained, and the gray scale attenuation coefficient corresponding to each pixel is obtained according to the position information of each pixel, so that the actual display gray scale of each pixel is determined according to the gray scale to be displayed and the gray scale attenuation coefficient of each pixel, at least one pixel in the edge area is smaller than the gray scale to be displayed, the power consumption of the display device is reduced, and the sensitivity of human eyes to brightness is attenuated from the middle area to two sides when the display device is watched, so that the power consumption of the display device is reduced, and meanwhile, the display effect is not influenced.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The foregoing has described in detail a display device and a driving method thereof according to the embodiments of the present application, and specific examples are applied to illustrate the principles and embodiments of the present application, where the foregoing description of the embodiments is only for helping to understand the technical solution and core ideas of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (3)

1. A display device driving method, characterized by comprising:
acquiring a picture to be displayed of a display device; the picture to be displayed comprises gray scales to be displayed of each pixel;
acquiring position information of each pixel in a picture to be displayed of the display device; the method specifically comprises the following steps: acquiring the resolution of a display device, and determining row information and column information of pixels of the display device according to the resolution of the display device; partitioning a display device according to row information and column information of pixels of the display device; determining position information of pixels of a display device according to the partitions of the display device;
acquiring gray scale attenuation coefficients corresponding to the pixels according to the position information of the pixels; the method specifically comprises the following steps: acquiring a minimum attenuation coefficient of the display device; determining a gray scale attenuation coefficient of each pixel according to the minimum attenuation coefficient of the display device and the position information of each pixel, wherein the minimum attenuation coefficient of the display device is determined according to the sensitivity of human eyes to brightness; the gray scale attenuation coefficients are distributed in an elliptical manner from the middle area to the edge area;
determining the actual display gray scale of each pixel according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient; at least one pixel positioned in the edge area of the display device has an actual display gray level smaller than the gray level to be displayed;
driving each pixel to display a picture by using the actual display gray scale of each pixel;
the step of determining the gray-scale attenuation coefficient of each pixel according to the minimum attenuation coefficient of the display device and the position information of each pixel comprises the following steps:
determining a unit attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device; the method specifically comprises the following steps: determining a row minimum attenuation coefficient and a column minimum attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device; determining a row unit attenuation coefficient and a column unit attenuation coefficient of the display device according to the row minimum attenuation coefficient and the column minimum attenuation coefficient of the display device and the position information of the pixels of the display device; determining a unit attenuation coefficient of the display device according to the row unit attenuation coefficient and the column unit attenuation coefficient of the display device;
determining gray scale attenuation coefficients of pixels according to the unit attenuation coefficients of the display device and the position information of the pixels of the display device; the method specifically comprises the following steps: determining a line gray scale attenuation coefficient of each pixel according to the line unit attenuation coefficient of the display device and the line information of each pixel; determining a column gray scale attenuation coefficient of each pixel according to the column single-bit attenuation coefficient of the display device and column information of each pixel; determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient of each pixel and the column gray scale attenuation coefficient of each pixel;
the gray scale attenuation coefficient C of each pixel is determined according to the following formula:
wherein, X= (1-Xmin)/(n/2-1), Y= (1-Ymin)/(m/2-1), xmin is the minimum attenuation coefficient of the display device row, ymin is the minimum attenuation coefficient of the display device column, and the resolution of the display device isThe method comprises the steps of carrying out a first treatment on the surface of the a is the ordinate of the pixel and b is the abscissa of the pixel.
2. The display device driving method according to claim 1, wherein the step of acquiring positional information of each pixel in a screen to be displayed of the display device comprises:
judging whether the picture to be displayed of the display device meets a preset attenuation condition or not according to the picture to be displayed of the display device;
and when the picture to be displayed of the display device meets a preset attenuation condition, acquiring the position information of each pixel in the picture to be displayed of the display device.
3. A display device, comprising:
the first acquisition module is used for acquiring a picture to be displayed of the display device; the picture to be displayed comprises gray scales to be displayed of each pixel;
the second acquisition module is used for acquiring the position information of each pixel in a picture to be displayed of the display device; the method is particularly used for: acquiring the resolution of a display device, and determining row information and column information of pixels of the display device according to the resolution of the display device; partitioning a display device according to row information and column information of pixels of the display device; determining position information of pixels of a display device according to the partitions of the display device;
the third acquisition module is used for acquiring gray scale attenuation coefficients corresponding to the pixels according to the position information of the pixels; the method is particularly used for: acquiring a minimum attenuation coefficient of the display device; determining a gray scale attenuation coefficient of each pixel according to the minimum attenuation coefficient of the display device and the position information of each pixel, wherein the minimum attenuation coefficient of the display device is determined according to the sensitivity of human eyes to brightness; the gray scale attenuation coefficients are distributed in an elliptical manner from the middle area to the edge area;
wherein the determining the gray-scale attenuation coefficient of each pixel according to the minimum attenuation coefficient of the display device and the position information of each pixel comprises: the third acquisition module determines a unit attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device; determining gray scale attenuation coefficients of pixels according to the unit attenuation coefficients of the display device and the position information of the pixels of the display device;
wherein the determining the unit attenuation coefficient of the display device according to the position information of the pixel of the display device and the minimum attenuation coefficient of the display device comprises: the third acquisition module determines a row minimum attenuation coefficient and a column minimum attenuation coefficient of the display device according to the position information of the pixels of the display device and the minimum attenuation coefficient of the display device; determining a row unit attenuation coefficient and a column unit attenuation coefficient of the display device according to the row minimum attenuation coefficient and the column minimum attenuation coefficient of the display device and the position information of the pixels of the display device; determining a unit attenuation coefficient of the display device according to the row unit attenuation coefficient and the column unit attenuation coefficient of the display device;
determining the gray scale attenuation coefficient of each pixel according to the unit attenuation coefficient of the display device and the position information of each pixel of the display device; comprising the following steps: the third acquisition module determines the line gray scale attenuation coefficient of each pixel according to the line unit attenuation coefficient of the display device and the line information of each pixel; determining a column gray scale attenuation coefficient of each pixel according to the column single-bit attenuation coefficient of the display device and column information of each pixel; determining the gray scale attenuation coefficient of each pixel according to the row gray scale attenuation coefficient of each pixel and the column gray scale attenuation coefficient of each pixel;
the third obtaining module determines a gray-scale attenuation coefficient C of each pixel according to the following formula:
wherein, X= (1-Xmin)/(n/2-1), Y= (1-Ymin)/(m/2-1), xmin is the minimum attenuation coefficient of the display device row, ymin is the minimum attenuation coefficient of the display device column, and the resolution of the display device isThe method comprises the steps of carrying out a first treatment on the surface of the a is the ordinate of the pixel, b is the abscissa of the pixel;
the determining module is used for determining the actual display gray scale of each pixel according to the gray scale to be displayed of each pixel and the corresponding gray scale attenuation coefficient; at least one pixel positioned in the edge area of the display device has an actual display gray level smaller than the gray level to be displayed;
and the driving module is used for driving each pixel to display a picture by using the actual display gray scale of each pixel.
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