CN112562568B - Driving method of display panel, display panel and display device - Google Patents

Driving method of display panel, display panel and display device Download PDF

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Publication number
CN112562568B
CN112562568B CN202011540077.XA CN202011540077A CN112562568B CN 112562568 B CN112562568 B CN 112562568B CN 202011540077 A CN202011540077 A CN 202011540077A CN 112562568 B CN112562568 B CN 112562568B
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sub
pixel
pixels
mapping
gray level
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CN112562568A (en
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杨雁
王海亮
李雅缨
周婷
李俊谊
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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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)

Abstract

The invention discloses a driving method of a display panel, the display panel and a display device, wherein the driving method comprises the following steps: acquiring gray scale information of a single frame image; determining target gray scale of the first sub-pixel according to gray scale information of the single frame image and position information of the first pixel unit; determining the mapping gray scale of a second mapping sub-pixel of the second pixel unit according to the gray scale information of the single frame image and the position information of the second pixel unit, wherein the second mapping sub-pixel corresponds to the first sub-pixels of N colors; determining target gray scales of the white sub-pixel and the second sub-pixel according to the mapping gray scales of the second mapping sub-pixel; and displaying according to the target gray level of the first sub-pixel, the target gray level of the white sub-pixel and the target gray level of the second sub-pixel, so that the uniformity of the display effect of the first display area and the second display area is ensured.

Description

Driving method of display panel, display panel and display device
Technical Field
The present invention relates to the field of display panels, and in particular, to a driving method of a display panel, and a display device.
Background
At present, the demand of products such as mobile phones and the like on high screen ratio is increasing, and the permeability of the market on the comprehensive screen is close to 70%. The screen ratio is the ratio of the screen area to the whole machine area, and a higher screen ratio can bring better visual experience to a user.
Because components such as a camera and a light sensor are required to be placed on the front surface of the mobile phone, the existing solution for realizing the full-screen display of the display panel is generally to divide the display area of the display panel into a first area and a second area, set the pixel density of the first area to be smaller than that of the second area, further ensure that a large amount of space can be reserved in the first area to enable light to penetrate, but due to the fact that the pixel densities of the first area and the second area are different, the difference exists necessarily when the display panel is in a display stage, the brightness of a display picture of the first area and the brightness of a display picture of the second area are different, and the full-screen display effect of the display panel is influenced.
Disclosure of Invention
The embodiment of the invention provides a driving method of a display panel, the display panel and a display device, so that full-screen display is realized, and the uniformity of display effects of a first display area and a second display area is ensured.
In a first aspect, an embodiment of the present invention provides a driving method of a display panel, where the display panel includes a first display area and a second display area, the first display area includes a plurality of first pixel units arranged in an array, and the second display area includes a plurality of second pixel units arranged in an array; the first pixel unit comprises N colored first sub-pixels; the second pixel unit includes a white sub-pixel and N color second sub-pixels, wherein the driving method includes:
Acquiring gray scale information of a single frame image;
Determining the target gray level of the first sub-pixel according to the gray level information of the single-frame image and the position information of the first pixel unit;
determining the mapping gray scale of a second mapping sub-pixel of the second pixel unit according to the gray scale information of the single frame image and the position information of the second pixel unit, wherein the second mapping sub-pixel corresponds to the first sub-pixels with N colors;
determining target gray scales of the white sub-pixel and the second sub-pixel according to the mapping gray scale of the second mapping sub-pixel;
And displaying according to the target gray level of the first sub-pixel, the target gray level of the white sub-pixel and the target gray level of the second sub-pixel.
In a second aspect, an embodiment of the present invention provides a display panel, including a first display area and a second display area, where the second display area is multiplexed into a light-sensitive element setting area;
The first display area comprises a plurality of first pixel units which are arranged in an array manner, and the second display area comprises a plurality of second pixel units which are arranged in an array manner; the first pixel unit comprises N colored first sub-pixels; the second pixel unit comprises a white sub-pixel and N colored second sub-pixels; the pixel density of the first display area is greater than the pixel density of the second display area.
The second display area is in a light transmission state when the light sensing element works, and external light rays are incident to the light sensing element through the second display area;
The second display area is in an opaque state when the display panel displays in a full screen mode, and the second pixel unit realizes normal display of the second display area.
In a third aspect, an embodiment of the present invention provides a display device including the display panel according to any one of the second aspects, further including: the light sensing element is arranged in the second display area of the display panel and is positioned at one side deviating from the light emitting surface of the display panel, and the light sensing surface of the light sensing element faces the display panel.
According to the driving method of the display panel, the display panel and the display device provided by the embodiment of the invention, the display panel comprises the first display area and the second display area, the first pixel unit in the first display area comprises N colored first sub-pixels, the second pixel unit in the second display area comprises N colored second sub-pixels and white sub-pixels, when the display panel is in the display mode, firstly, according to the gray level information of a single frame image and the position information of the second pixel unit, the mapping gray level of the second mapping sub-pixel of the second pixel unit is determined, namely, the mapping gray level when the sub-pixel of the second pixel unit is identical to the sub-pixel of the first pixel unit, and then, according to the mapping gray level of the second mapping sub-pixel, the white sub-pixel and the target gray level of the second sub-pixel when the second pixel unit is the white sub-pixel and the N colored second sub-pixel are determined, and the target gray level of the white sub-pixel and the target gray level of the second sub-pixel in the second pixel unit is determined, and the display effect of the second pixel and the first gray level of the second mapping sub-pixel and the second sub-pixel of the second pixel unit are the same is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a flow chart of a driving method of the display panel corresponding to that provided in FIG. 1;
Fig. 3 is a flowchart illustrating another driving method of a display panel according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of mapping sub-pixels and correspondence between white sub-pixels and second sub-pixels according to an embodiment of the present invention;
Fig. 5 is a schematic diagram of a mapping sub-pixel and a correspondence structure between a white sub-pixel and a second sub-pixel according to another embodiment of the present invention;
Fig. 6 is a flowchart of a driving method of a display panel according to another embodiment of the present invention;
fig. 7 is a flowchart of a driving method of a display panel according to another embodiment of the present invention;
fig. 8 is a flowchart of a driving method of a display panel according to another embodiment of the present invention;
fig. 9 is a flowchart of a driving method of a display panel according to another embodiment of the present invention;
FIG. 10 is a schematic diagram illustrating an arrangement of sub-pixels in a second display area according to an embodiment of the present invention;
FIG. 11 is a schematic diagram illustrating an arrangement of subpixels in a second display area according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
With the development of the full screen, in the prior art, the display area of the display panel is generally divided into a first area and a second area, and the pixel density of the first area is lower than that of the second area, namely, a large amount of space reserved in the first area is used for transmitting outside light, so that the outside light transmittance of the first area is higher, when the pixels of the first area are closed, the image pickup module can pick up images through the first area, when the pixels of the first area are opened, the images can be normally displayed, and the second area can always normally display the images, thereby avoiding the situation that the image pickup module is installed by opening holes in the display panel and realizing full-screen display. However, since the pixel density of the first area is smaller than that of the second area, when the display panel is in the display stage, there is necessarily a difference between the display brightness of the first area and the display brightness of the second area, which affects the display effect of the display panel in the full-screen display.
To solve the above problems, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, fig. 2 is a flowchart of a driving method of the display panel according to fig. 1, where the display panel includes a first display area 10 and a second display area 20, the first display area 10 includes a plurality of first pixel units 11 arranged in an array, the second display area 20 includes a plurality of second pixel units 21 arranged in an array, the first pixel units 11 include first sub-pixels of N colors (fig. 1 exemplarily shows that the first sub-pixels include red pixels R, green sub-pixels G and blue sub-pixels B), the second pixel units 21 include white sub-pixels W and second sub-pixels of N colors (the second sub-pixels include red pixels R, green sub-pixels G and blue sub-pixels B), and the driving method includes:
s110, acquiring gray scale information of a single frame image.
In a frame of display picture, first, the gray-scale information of the frame of display picture is obtained.
S120, determining the target gray level of the first sub-pixel according to the gray level information of the single frame image and the position information of the first pixel unit.
Because the display panel is provided with the first display area and the second display area, the first pixel unit in the first display area comprises N colored first sub-pixels, the second pixel unit in the second display area comprises N colored second sub-pixels and white sub-pixels, after the gray level information of the single frame image is acquired, the gray level information of the first pixel unit in the corresponding first display area and the gray level information of the second pixel unit in the corresponding second display area are determined, at this time, the target gray level of the first sub-pixel in the first pixel unit can be determined according to the position information of the first pixel unit, and because the first pixel unit comprises N colored first sub-pixels, the determined target gray level of the first sub-pixel is identical with the gray level information corresponding to the first display area in the acquired single frame image.
S130, determining the mapping gray scale of a second mapping sub-pixel of the second pixel unit according to the gray scale information of the single frame image and the position information of the second pixel unit, wherein the second mapping sub-pixel corresponds to the first sub-pixels with N colors.
In order to realize the full-screen display of the display panel, the second pixel unit in the second display area comprises N colored second sub-pixels and white sub-pixels, and when the display panel is in a shooting mode, the sub-pixels in the second display area are closed, and the light sensing element can receive external environment light so as to realize shooting of the display panel. When the display panel is in a display mode, the N colored second sub-pixels and the white sub-pixels of the second pixel unit in the second display area can be started, wherein the white sub-pixels can compensate the brightness of the second pixel unit, and the uniformity of the display effect of the first display area and the second display area is ensured.
Because the second pixel unit in the second display area is set to be the first sub-pixel including N colors or the second pixel unit is set to be the first sub-pixel including N colors and the white sub-pixel in the prior art, when the second pixel unit is the first sub-pixel including N colors, the acquired gray scale information of the single frame image is the gray scale information of the first sub-pixel corresponding to the second pixel unit in the second display area and is the gray scale information of the first sub-pixel including N colors, when the second pixel unit is the first sub-pixel including N colors and the white sub-pixel, the acquired gray scale information of the single frame image is the gray scale information of the first sub-pixel corresponding to the second pixel unit in the second display area and is the gray scale information of the first sub-pixel corresponding to N colors, and when the second display area is in the photographing mode, the white sub-pixel is mainly used for enabling external environment light to penetrate through the white sub-pixel to realize photographing of the second display area, and when the display panel is in the display mode, the corresponding white sub-pixel does not have corresponding control voltage to realize compensation of the brightness of the white sub-pixel to the second display area. When the second pixel units in the second display area comprise white sub-pixels and N colored second sub-pixels, the positions of the second pixel units are determined according to the position information of the second display area divided by the display panel, and then the mapping gray scale of the second mapping sub-pixels of the second pixel units is determined according to the gray scale information of a single frame image and the position information of the second pixel units, namely, the mapping gray scale of each second mapping sub-pixel when the corresponding second pixel units are N colored first sub-pixels.
And S140, determining target gray scales of the white sub-pixel and the second sub-pixel according to the mapping gray scale of the second mapping sub-pixel.
After the mapping gray level of the second mapping sub-pixel is determined, determining the white sub-pixel and the target gray level of the second sub-pixel in the second display area corresponding to the second mapping sub-pixel according to the mapping gray level of the second mapping sub-pixel.
And S150, displaying according to the target gray level of the first sub-pixel, the target gray level of the white sub-pixel and the target gray level of the second sub-pixel.
After determining the target gray scale of the first sub-pixel of the first display area and the target gray scale of the white sub-pixel and the target gray scale of the second pixel of the second display area, driving the sub-pixels of the first display area and the second display area of the display panel to display in the target gray scale.
It should be noted that, in the above embodiment, the first pixel unit is set to include N color first sub-pixels, the second pixel unit is set to include a white sub-pixel and N color second sub-pixels, where the N color first sub-pixels are the same as the N color second sub-pixels, the N color sub-pixels may include a red sub-pixel, a green sub-pixel, a blue sub-pixel, a yellow sub-pixel, a cyan sub-pixel, a pink sub-pixel, and other color sub-pixels.
According to the driving method of the display panel, the display panel comprises a first display area and a second display area, a first pixel unit in the first display area comprises N colored first sub-pixels, a second pixel unit in the second display area comprises N colored second sub-pixels and white sub-pixels, when the display panel is in a display mode, firstly, according to gray scale information of a single frame image and position information of the second pixel unit, mapping gray scales of the second mapping sub-pixels of the second pixel unit are determined, namely, mapping gray scales when the sub-pixels of the second pixel unit are identical to the sub-pixels of the first pixel unit, and then, according to the mapping gray scales of the second mapping sub-pixels, the white sub-pixels and target gray scales of the second sub-pixels when the second pixel unit is the white sub-pixels and the N colored second sub-pixels are determined.
When the display panel displays a pure white picture, the difference between the display brightness value of the second display area and the display brightness value of the first display area is +/-0.005, the chromaticity difference is +/-0.005, and the corresponding opening proportion of the white sub-pixels is 20-50%. When the display panel displays RGB solid-color pictures, the difference between the display brightness value of the second display area and the display brightness value of the first display area is within +/-0.005, the chromaticity difference is within +/-0.010, and the corresponding opening proportion of the white sub-pixels is 0-5%. When the display panel displays a color complex picture, the difference between the display brightness value of the second display area and the display brightness value of the first display area is within +/-0.005, the chromaticity difference is within +/-0.01, and the chromaticity difference is within +/-0.020, and at the moment, the corresponding white sub-pixel is opened by 0-50%.
Optionally, based on the foregoing embodiment, fig. 3 is a schematic flow chart of another driving method of a display panel according to the embodiment of the present invention, as shown in fig. 3, determining, according to a mapping gray level of a second mapping sub-pixel, a target gray level of a white sub-pixel and the second sub-pixel includes:
S210, determining the target gray level of the white sub-pixel according to the minimum value in the mapping gray levels of the second mapping sub-pixels corresponding to the second pixel units.
As shown in fig. 4, when the second mapping sub-pixel corresponding to the second pixel unit includes a red sub-pixel Lr, a green sub-pixel Lg, and a blue sub-pixel Lb, the second mapping sub-pixel corresponding to the second pixel unit includes a white sub-pixel Zw, a red sub-pixel Zr, a green sub-pixel Zg, and a blue sub-pixel Zb, the gray level of the red sub-pixel Lr included in the second mapping sub-pixel is 127, the gray level of the green sub-pixel Lg is 255, and the gray level of the blue sub-pixel Lb is 255, and at this time, the minimum value of the mapping gray level of the second mapping sub-pixel is the gray level value corresponding to the red sub-pixel Lr, and the target gray level of the white sub-pixel in the second pixel unit is determined by selecting the gray level value of the red sub-pixel.
In other embodiments, as shown in fig. 5, when the second mapping sub-pixel corresponding to the second pixel unit includes red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, the second mapping sub-pixel corresponding to the second pixel unit includes a white sub-pixel Zw, a red sub-pixel Zr, a green sub-pixel Zg, and a blue sub-pixel Zb, the second mapping sub-pixel includes a red sub-pixel Lr1 having a gray scale 127, the red sub-pixel Lr1 having a gray scale 255, the green sub-pixel Lg2 having a gray scale 25, the blue sub-pixel Lb1 having a gray scale 255, and the blue sub-pixel Lb2 having a gray scale 255, and the minimum value of the mapping gray scale of the second mapping sub-pixel is the gray scale corresponding to the red sub-pixel Lr1, and the target gray scale of the second pixel unit is determined by selecting the gray scale value of the red sub-pixel Lr 1.
It should be noted that, the second mapping sub-pixel corresponding to the second pixel unit includes a red sub-pixel Lr, a green sub-pixel Lg, and a blue sub-pixel Lb, and the first pixel unit located in the first display area includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. When the second mapping sub-pixels corresponding to the second pixel unit include red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, the first pixel unit located in the first display area includes red sub-pixels R1 and R2, green sub-pixels G1 and G2, and blue sub-pixels B1 and B2.
Optionally, determining the target gray level of the white sub-pixel according to the minimum value in the mapped gray levels of the second mapped sub-pixel corresponding to the second pixel unit includes:
and substituting the minimum value in the mapping gray scale of the second mapping sub-pixel corresponding to the second pixel unit into the gray scale brightness model to determine the target gray scale of the white sub-pixel in the second pixel unit.
The gray scale luminance model includes:
wherein X target gray percentage=x target brightness/brightness corresponding to 255 gray.
Exemplary, when the second mapping sub-pixel corresponding to the second pixel unit includes a red sub-pixel Lr, a green sub-pixel Lg and a blue sub-pixel Lb, and the gray scale of the red sub-pixel Lr is 127, the gray scale of the green sub-pixel Lg is 255, the gray scale of the blue sub-pixel Lb is 255, the gray scale value 127 of the red sub-pixel Lr is selected to be added into the gray scale luminance modelFor example, a gray scale Gamma value of 2.2 is selected for the white sub-pixel, when the gray scale value 127 of the red sub-pixel Lr is determined to be the minimum value of the mapping gray scale in the second mapping sub-pixel, 127 is substituted into the formula, that is, the X gray scale value is 127, the target luminance percentage of the white sub-pixel can be obtained according to the formula, and then the luminance corresponding to the formula X target gray scale percentage=x target luminance/255 gray scale is determined, wherein the luminance value corresponding to the 255 gray scale is fixed, so that the target luminance of the white sub-pixel can be determined.
When the second mapping sub-pixel corresponding to the second pixel unit includes red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, and the gray scale of the red sub-pixel Lr1 is 127, the gray scale of the red sub-pixel Lr1 is 255, the gray scale of the green sub-pixel Lg2 is 255, the gray scale of the blue sub-pixel Lb1 is 255, and the gray scale of the blue sub-pixel Lb2 is 255, the gray scale of the red sub-pixel Lr1 is selected to be brought into the gray scale brightness modelAnd obtaining brightness information corresponding to the white sub-pixels.
The second mapping sub-pixels corresponding to the second pixel unit in the above embodiment include the red sub-pixel Lr, the green sub-pixel Lg, and the blue sub-pixel Lb, or include the red sub-pixels Lr1 and Lr2, the green sub-pixels Lg1 and Lg2, and the blue sub-pixels Lb1 and Lb2, that is, one second pixel unit corresponds to one red sub-pixel Lr, one green sub-pixel Lg, and one blue sub-pixel Lb in the second mapping sub-pixel, or one second pixel unit corresponds to two red sub-pixels Lr1 and Lr2, two green sub-pixels Lg1 and Lg2, and two blue sub-pixels Lb1 and Lb2 in the second mapping sub-pixel, and in other embodiments, a plurality of red sub-pixels, a plurality of green sub-pixels, and a plurality of blue sub-pixels in the second mapping sub-pixel may be provided.
S220, determining the target gray level of each second sub-pixel in the second pixel unit according to the mapping gray levels of other second mapping sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel.
Optionally, determining the target gray level of each second sub-pixel in the second pixel unit according to the mapped gray levels of the other second mapped sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel includes:
s310, other mapping gray scales of the sub-pixels corresponding to the minimum value in the mapping gray scales of the second mapping sub-pixels are brought into the gray scale brightness model to determine the preset target gray scale of part of the second sub-pixels.
For example, with continued reference to fig. 4, when the second mapping sub-pixel corresponding to the second pixel unit includes only one red sub-pixel Lr, one green sub-pixel Lg, and one blue sub-pixel Lb, the red sub-pixel Lr is used as the sub-pixel with the smallest gray level value in the mapping sub-pixel to obtain the target gray level of the white sub-pixel in the second pixel unit, and since the red sub-pixel has no other mapping gray level, the preset target gray level value of the red sub-pixel in the second pixel unit is 0. When the second mapping sub-pixel corresponding to the second pixel unit includes red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, as shown in fig. 5, after the red sub-pixel Lr1 is used as the sub-pixel with the smallest gray level value in the mapping sub-pixel to obtain the target gray level of the white sub-pixel in the second pixel unit, the other mapping gray levels of the sub-pixel corresponding to the smallest value in the mapping gray level of the second mapping sub-pixel can be understood as the gray levels of the other red sub-pixels except the red sub-pixel Lr1 in the mapping gray level of the second mapping sub-pixel, and the gray level corresponding to Lr2 in fig. 5 is carried into the gray level brightness model according to the mapping gray level of the red sub-pixel Lr2 to determine the preset target gray level of the red sub-pixel in the second pixel unit.
S320, bringing the mapping gray scale of the other sub-pixels except the sub-pixel corresponding to the minimum value in the mapping gray scale of the second mapping sub-pixel into the preset target gray scale of the second sub-pixel of the gray scale brightness model determination part.
With continued reference to fig. 4, when the second mapping sub-pixel corresponding to the second pixel unit only includes one red sub-pixel Lr, one green sub-pixel Lg and one blue sub-pixel Lb, the red sub-pixel Lr is used as the sub-pixel with the smallest gray level value in the mapping sub-pixel to obtain the target gray level of the white sub-pixel Zw in the second pixel unit, and when the red sub-pixel Lr is used as the sub-pixel with the smallest gray level value in the mapping sub-pixel to obtain the target gray level of the white sub-pixel Zw in the second pixel unit, the gray level value corresponding to the green sub-pixel Lg in the second mapping sub-pixel corresponding to the second pixel unit is brought into the gray level brightness model to determine the preset target gray level of the green sub-pixel Zg in the second sub-pixel in the second pixel unit, and the gray level value corresponding to the blue sub-pixel Lb is brought into the gray level brightness model to determine the preset target gray level of the blue sub-pixel Zb in the second sub-pixel unit. When the second mapping sub-pixels corresponding to the second pixel unit include red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, as shown in fig. 5, the sum of the gray scale luminance values corresponding to the green sub-pixels Lg1 and Lg2 in the second mapping sub-pixels corresponding to the second pixel unit is brought into the gray scale luminance model to determine the preset target gray scale of the green sub-pixel Zg in the second sub-pixel in the second pixel unit, and the sum of the gray scale luminance values corresponding to the blue sub-pixels Lb1 and Lb2 in the second mapping sub-pixels corresponding to the second pixel unit is brought into the gray scale luminance model to determine the preset target gray scale of the blue sub-pixel Zb in the second sub-pixel in the second pixel unit.
S330, determining the target gray level of each second sub-pixel in the second pixel unit according to the preset target gray level of each second sub-pixel in the second pixel unit and the target gray level of the white sub-pixel.
Since the white sub-pixel includes a partial gray level of the red sub-pixel, a partial gray level of the blue sub-pixel, and a partial gray level of the blue sub-pixel, for example, when the second mapping sub-pixel corresponding to the second pixel unit includes the red sub-pixels Lr1 and Lr2, the green sub-pixels Lg1 and Lg2, and the blue sub-pixels Lb1 and Lb2, the target gray level corresponding to the blue sub-pixel in the second pixel unit may be determined by subtracting the target gray level of the white sub-pixel from the target gray level of the blue sub-pixel in the second pixel unit, and the target gray level corresponding to the blue sub-pixel in the second pixel unit may be determined by subtracting the target gray level of the blue sub-pixel in the second pixel unit from the target gray level of the green sub-pixel Zg in the second pixel unit. Since the target gray level of the white sub-pixel is determined according to the red sub-pixel Lr1, the target gray level of the red sub-pixel is the same as the preset target gray level of the red sub-pixel.
It should be noted that, in the foregoing embodiment, the gray-scale values of the sub-pixels corresponding to the minimum value in the mapped gray-scale of the second mapped sub-pixel are all converted into the target gray-scale of the white sub-pixel, and in other embodiments, after determining the sub-pixel corresponding to the minimum value in the mapped gray-scale of the second mapped sub-pixel, the target gray-scale of the white sub-pixel may be determined by selecting a part of the gray-scale values in the sub-pixel corresponding to the minimum value, which is not limited by the embodiment of the present invention.
It should be noted that the foregoing embodiments exemplarily represent a driving method of a display panel, and a specific embodiment of another driving method of a display panel is described below.
Optionally, determining the target gray levels of the white sub-pixel and the second sub-pixel according to the mapped gray level of the second mapped sub-pixel includes:
s410, determining the target gray level of the white sub-pixel according to the minimum sum of the mapping gray levels of the second mapping sub-pixels of the same color corresponding to the second pixel unit.
For example, with continued reference to fig. 4, when the second mapping sub-pixel corresponding to the second pixel unit includes a red sub-pixel Lr, a green sub-pixel Lg, and a blue sub-pixel Lb, the second mapping sub-pixel corresponding to the second pixel unit includes a white sub-pixel Zw, a red sub-pixel Zr, a green sub-pixel Zg, and a blue sub-pixel Zb, the gray level of the red sub-pixel Lr included in the second mapping sub-pixel is 127, the gray level of the green sub-pixel Lg is 255, and the gray level of the blue sub-pixel Lb is 255, and at this time, the minimum value of the mapping gray level of the second mapping sub-pixel is the gray level value corresponding to the red sub-pixel Lr, and the target gray level of the white sub-pixel in the second pixel unit is determined by selecting the gray level value of the red sub-pixel.
In other embodiments, as shown in fig. 5, when the second mapping sub-pixel corresponding to the second pixel unit includes red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, the second mapping sub-pixel corresponding to the second pixel unit includes white sub-pixels Zw, red sub-pixels Zr, green sub-pixels Zg, and blue sub-pixels Zb, the gray level of the red sub-pixel Lr1 included in the second mapping sub-pixel is 127, the gray level of the red sub-pixel Lr1 is 255, the gray level of the green sub-pixel Lg2 is 255, the gray level of the blue sub-pixel Lb1 is 255, and the sum minimum value of the mapping gray levels of the mapping sub-pixels of the same color of the second mapping sub-pixel is the gray level corresponding to the red sub-pixels Lr1 and Lr2, and the target gray level is determined by selecting the gray level of the second sub-pixel corresponding to the red sub-pixel Lr1 and the gray level of the second sub-pixel l 2.
Optionally, determining the target gray level of the white sub-pixel according to the minimum sum of the mapped gray levels of the second mapped sub-pixels of the same color corresponding to the second pixel unit includes:
bringing the minimum value in the sum of the mapping gray scales of all the second mapping sub-pixels of the same color corresponding to the second pixel unit into a gray scale brightness model to determine the target gray scale of the white sub-pixel in the second pixel unit;
The gray scale luminance model includes:
wherein X target gray percentage=x target brightness/brightness corresponding to 255 gray.
Exemplary, when the second mapping sub-pixel corresponding to the second pixel unit includes a red sub-pixel Lr, a green sub-pixel Lg and a blue sub-pixel Lb, and the gray scale of the red sub-pixel Lr is 127, the gray scale of the green sub-pixel Lg is 255, the gray scale of the blue sub-pixel Lb is 255, the gray scale value 127 of the red sub-pixel Lr is selected to be added into the gray scale luminance modelFor example, a gray scale Gamma value of 2.2 is selected for the white sub-pixel, when the gray scale value 127 of the red sub-pixel Lr is determined to be the minimum value of the mapping gray scale in the second mapping sub-pixel, 127 is substituted into the formula, that is, the X gray scale value is 127, the target luminance percentage of the white sub-pixel can be obtained according to the formula, and then the luminance corresponding to the formula X target gray scale percentage=x target luminance/255 gray scale is determined, wherein the luminance value corresponding to the 255 gray scale is fixed, so that the target luminance of the white sub-pixel can be determined.
When the second mapping sub-pixel corresponding to the second pixel unit includes red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, and the gray scale of the red sub-pixel Lr1 is 127, the gray scale of the red sub-pixel Lr1 is 255, the gray scale of the green sub-pixel Lg2 is 25, the gray scale of the blue sub-pixel Lb1 is 255, the gray scale of the blue sub-pixel Lb2 is 255, and the sum of the gray scale values 127+255 of the red sub-pixels Lr1 and Lr2 is selected to be added to the gray scale luminance modelAnd obtaining brightness information corresponding to the white sub-pixels.
S420, determining the target gray level of each second sub-pixel in the second pixel unit according to the sum of the mapping gray levels of the second mapping sub-pixels of the same color except for the minimum value of the sum of the mapping gray levels of the second mapping sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel.
Optionally, determining the target gray level of each second sub-pixel in the second pixel unit according to the sum of the mapping gray levels of each second mapping sub-pixel of the same color except for the minimum sum of the mapping gray levels of the second mapping sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel includes:
S510, bringing the mapping gray scale of the other sub-pixels except for the sub-pixel corresponding to the minimum value of the mapping gray scale sum of the second mapping sub-pixels into the preset target gray scale of the second sub-pixels of the gray scale brightness model determination part.
The minimum sum value of the mapping gray scales of the second mapping sub-pixels of the same color corresponding to the second pixel unit determines the target gray scale of the white sub-pixel, so that the gray scale values of the red sub-pixels in the second mapping sub-pixels are all converted into the target gray scale of the white sub-pixel, and the red sub-pixels in the second pixel unit are at 0 gray scale. When the second mapping sub-pixel corresponding to the second pixel unit only comprises a red sub-pixel Lr, a green sub-pixel Lg and a blue sub-pixel Lb, the red sub-pixel Lr is used as a sub-pixel with the minimum gray level value in the mapping sub-pixel to obtain the target gray level of the white sub-pixel Zw in the second pixel unit, and when the red sub-pixel Lr is used as a sub-pixel with the minimum gray level value in the mapping sub-pixel to obtain the target gray level of the white sub-pixel Zw in the second pixel unit, the gray level value corresponding to the green sub-pixel Lg in the second mapping sub-pixel corresponding to the second pixel unit is brought into the gray level brightness model to determine the preset target gray level of the green sub-pixel Zg in the second sub-pixel in the second pixel unit, and the gray level value corresponding to the blue sub-pixel Lb is brought into the gray level brightness model to determine the preset target gray level of the blue sub-pixel Zb in the second sub-pixel in the second pixel unit. When the second mapping sub-pixels corresponding to the second pixel unit include red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, the sum of the gray-scale luminance values corresponding to the green sub-pixels Lg1 and Lg2 in the second mapping sub-pixels corresponding to the second pixel unit is brought into the gray-scale luminance model to determine the preset target gray-scale of the green sub-pixel Zg in the second sub-pixel in the second pixel unit, and the sum of the gray-scale luminance values corresponding to the blue sub-pixels Lb1 and Lb2 in the second mapping sub-pixels corresponding to the second pixel unit is brought into the gray-scale luminance model to determine the preset target gray-scale of the blue sub-pixel Zb in the second sub-pixel in the second pixel unit.
S520, determining the target gray level of each second sub-pixel in the second pixel unit according to the preset target gray level of each second sub-pixel in the second pixel unit and the target gray level of the white sub-pixel.
After determining the preset target gray level of the green sub-pixel Zg in the second sub-pixel and the preset target gray level of the blue sub-pixel Zb in the second sub-pixel, determining the target gray level corresponding to the green sub-pixel Zb in the second pixel unit by subtracting the target gray level of the white sub-pixel from the preset target gray level of the green sub-pixel Zg in the second sub-pixel in the determined second pixel unit, and determining the target gray level corresponding to the blue sub-pixel Zb in the second pixel unit by subtracting the target gray level of the white sub-pixel from the preset target gray level of the blue sub-pixel Zb in the determined second pixel unit.
It should be noted that, in the above embodiments, the second mapping sub-pixel corresponding to the second pixel unit includes only one red sub-pixel Lr, one green sub-pixel Lg, and one blue sub-pixel Lb, or the second mapping sub-pixel corresponding to the second pixel unit includes red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, and in other possible embodiments, the second mapping sub-pixel corresponding to the second pixel unit may be provided to include only a plurality of red sub-pixels Lr, a plurality of green sub-pixels Lg, and a plurality of blue sub-pixels Lb, and the number of the red sub-pixels Lr, the green sub-pixels Lg, and the blue sub-pixels Lb included in the second mapping sub-pixel corresponding to the second pixel unit is not specifically limited in the embodiment of the present invention.
Optionally, based on the foregoing embodiment, fig. 9 is a schematic flow chart of a driving method of a display panel according to another embodiment of the present invention, as shown in fig. 9, displaying according to a target gray level of a first subpixel, and a target gray level of a white subpixel and a target gray level of a second subpixel includes:
s610, determining a first driving voltage of each first pixel unit of the first display area according to the target gray scale of the first sub-pixel.
S620, determining a second driving voltage corresponding to the white sub-pixel according to the target gray level of the white sub-pixel and determining a third driving voltage of the second sub-pixel according to the target gray level of the second sub-pixel.
S630, driving each first pixel unit of the first display area and each second pixel unit of the second display area according to the first driving voltage, the second driving voltage and the third driving voltage to display with target gray scale.
After determining the target gray level of the first sub-pixel, determining a first driving voltage of each first pixel unit of the first display area according to the target gray level corresponding to the first sub-pixel, determining a second driving voltage corresponding to the white sub-pixel according to the target gray level of the white sub-pixel, determining a third driving voltage of the second sub-pixel according to the target gray level of the second sub-pixel, and finally driving each first pixel unit of the first display area and each second pixel unit of the second display area according to the determined first driving voltage, second driving voltage and third driving voltage to display according to the target gray level, so as to realize the full screen display of the display panel.
Optionally, in conjunction with fig. 4 or fig. 5, in the second display area, the area of the white subpixel is A1, and the sum of the areas of the second subpixels of the N colors is A2, where A2 < A1 < 6A2.
By setting the sum A2 of the area A1 of the white sub-pixel in the second display area and the areas of the N colored second sub-pixels to satisfy A2 < A1 < 6A2, the situation that when the area A1 of the white sub-pixel in the second display area is too small, when the display panel is in a photographing mode, the photographing effect of the light sensing element in the second display area is affected, and when the area A1 of the white sub-pixel in the second display area is too large, when the display panel is in a display mode, the display effect of the second display area is affected by the too large white sub-pixel is avoided.
Optionally, with continued reference to fig. 1, the display panel includes a first display area 10 and a second display area 20, where the second display area 20 is multiplexed into a light sensing element setting area, the first display area 10 includes a plurality of first pixel units 11 arranged in an array, the second display area 20 includes a plurality of second pixel units 21 arranged in an array, the first pixel units 11 include N color first sub-pixels (RGB), the second pixel units 21 include white sub-pixels W and N color second sub-pixels (RGB), and a pixel density of the first display area 10 is greater than a pixel density of the second display area 20. The second display area 20 is in a light transmission state when the light sensing element works, external light is incident to the light sensing element through the second display area 20, the second display area 20 is in a light-tight state when the display panel displays in a full screen, and the second pixel unit 21 realizes normal display of the second display area 20.
As shown in fig. 1, the display panel provided in this embodiment includes a first display area 10 and a second display area 20 adjacent to the first display area 10, where the second display area 20 is multiplexed into a light sensing element setting area, the first display area 10 includes a plurality of first pixel units 11 arranged in an array, and the second display area 20 includes a plurality of second pixel units 21 arranged in an array. The first pixel unit 11 includes N-color first sub-pixels, and the second pixel unit 21 includes a white sub-pixel and N-color second sub-pixels. The display panel provided by the embodiment can be a liquid crystal display panel, and a light source is provided by the backlight module. Among them, the liquid crystal display panel generally includes a Color Filter (CF) substrate and a thin film transistor (Thin Film Transistor, TFT) array substrate, and a liquid crystal layer between the CF substrate and the TFT substrate. The working principle is that the liquid crystal molecules in the liquid crystal layer are controlled to rotate by applying a driving voltage, and a light source provided by the backlight module penetrates through the TFT array substrate of the liquid crystal display panel, is refracted out of the liquid crystal layer of the liquid crystal display panel, and generates a color picture through the CF substrate. The area corresponding to the white sub-pixel is not provided with a color filter, and when the light sensing element works, external light is incident to the light sensing element through the white sub-pixel in the second display area; when the display panel is in a display state, the pixels of the first display area and the second display area are turned on, so that the full-screen display of the display panel is realized.
Alternatively, based on the foregoing embodiment, fig. 10 shows an arrangement manner of sub-pixels in a second display area according to the embodiment of the present invention, as shown in fig. 10, the second pixel unit includes a first area AA and a second area BB, N color second sub-pixels are disposed in the first area AA, the white sub-pixel W is disposed in the second area BB, the N color second sub-pixels are sequentially and circularly arranged along a first direction X, and the white sub-pixels W are alternately arranged along a second direction Y with the first area AA, where the first direction X and the second direction Y intersect.
It is understood that, in this embodiment, the first direction X and the second direction Y are taken as an example, where the first direction X is a row direction of the pixel array, the second direction Y is a column direction of the pixel array, and the N color second sub-pixels include a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B, which are the same as the following description. The white sub-pixels are arranged in the same row, and the second sub-pixels with N colors are sequentially and circularly arranged, so that the complexity of wiring in the display panel can be reduced.
Based on the same inventive concept, fig. 11 shows another arrangement manner of sub-pixels in a second display area according to an embodiment of the present invention, as shown in fig. 11, the second pixel unit includes a first area AA and a second area BB, N color second sub-pixels are disposed in the first area AA, a white sub-pixel W is disposed in the second area BB, the N color second sub-pixels are sequentially and circularly arranged along a first direction X, and the white sub-pixels W are alternately arranged with the first area AA along a second direction Y, wherein the first direction X and the second direction Y intersect.
When the camera works, the white sub-pixels in the second area form a light transmission area, the red sub-pixels, the green sub-pixels and the blue sub-pixels in the first area form a non-light transmission area, when the light transmission area and the non-light transmission area are arranged at intervals, a grating structure is formed, when light is transmitted through the light transmission area, multi-stage diffraction fringes are formed to influence the imaging effect of the camera, therefore, the size of the second area can be set to be in non-periodic change along the row direction and/or the column direction, diffraction of the light by the light transmission area can be reduced, and the imaging effect of the camera is improved.
On the other hand, by arranging the second sub-pixels of the N colors and the white sub-pixels at intervals, when the display panel is in the display state, the uniformity of the display screen can be further ensured.
It should be noted that, fig. 10 and fig. 11 exemplarily show that the white sub-pixels and the second sub-pixels in the second display area are circular, or the white sub-pixels and the second sub-pixels may be configured as polygons, and the specific shapes of the white sub-pixels and the second sub-pixels in the second display area are not limited in the embodiments of the present invention.
Optionally, the area of the first pixel unit is S1, and the area of the second pixel unit is S2, where S1 is less than or equal to S2 and less than or equal to 5S1.
The area S1 of the first pixel unit and the area S2 of the second pixel unit are set to be less than or equal to S1 and less than or equal to S2 and less than or equal to 5S1, namely, the pixel density of the first display area is set to be greater than the pixel density of the second display area, when the area of the first pixel unit is identical to that of the second pixel unit, the area of the first pixel unit in the first display area in the preparation display panel is identical to that of the second pixel unit, the preparation complexity of the display panel is reduced, the area S2 of the second pixel unit is smaller than or equal to the area S1 of the first pixel unit, and the display effect of the second display area is prevented from being influenced by the fact that the number of the second pixel unit factors with larger area is smaller.
Optionally, in the second display area, the area of the white sub-pixel is A1 and the sum of the areas of the second sub-pixels of the N colors is A2, and A2 is smaller than A1 and smaller than 6A2.
By setting the sum A2 of the area A1 of the white sub-pixel in the second display area and the areas of the N colored second sub-pixels to satisfy A2 < A1 < 6A2, the situation that when the area A1 of the white sub-pixel in the second display area is too small, when the display panel is in a photographing mode, the photographing effect of the light sensing element in the second display area is affected, and when the area A1 of the white sub-pixel in the second display area is too large, when the display panel is in a display mode, the display effect of the second display area is affected by the too large white sub-pixel is avoided.
Optionally, the first pixel unit and the second pixel unit synchronously display the picture.
And the first pixel unit of the first display area and the second pixel unit of the second display area in the display panel are arranged to synchronously display the picture, so that the first display area and the second display area realize the display of a frame of picture when the display panel is in a display mode, and the full-screen display is realized.
Optionally, on the basis of the foregoing embodiments, the embodiment of the present invention further provides a display device, where the display device includes the display panel 01 described in any one of the foregoing embodiments, and further includes a light sensing element 02 disposed in the second display area 20 of the display panel and located on a side facing away from the light emitting surface of the display panel 01, where the light sensing surface of the light sensing element 02 faces the display panel 01.
By arranging the light-sensing element 02 facing away from the light-emitting side of the display panel 01, shielding of light emitted by the display panel 01 is avoided.
It should be noted that, the display panel provided in the embodiment of the present invention is suitable for a display device that needs to be provided with a light sensing element under a screen, where the light sensing element may be a camera or other light sensing elements, and the embodiment of the present invention is not limited specifically.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (16)

1. The driving method of the display panel comprises a first display area and a second display area, wherein the first display area comprises a plurality of first pixel units which are arranged in an array, and the second display area comprises a plurality of second pixel units which are arranged in an array; the first pixel unit comprises N colored first sub-pixels; the second pixel unit includes a white sub-pixel and N color second sub-pixels, wherein the driving method includes:
Acquiring gray scale information of a single frame image;
Determining the target gray level of the first sub-pixel according to the gray level information of the single-frame image and the position information of the first pixel unit;
determining the mapping gray scale of a second mapping sub-pixel of the second pixel unit according to the gray scale information of the single frame image and the position information of the second pixel unit, wherein the second mapping sub-pixel corresponds to the first sub-pixels with N colors;
determining target gray scales of the white sub-pixel and the second sub-pixel according to the mapping gray scale of the second mapping sub-pixel;
And displaying according to the target gray level of the first sub-pixel, the target gray level of the white sub-pixel and the target gray level of the second sub-pixel.
2. The driving method of the display panel according to claim 1, wherein the determining the target gray levels of the white sub-pixel and the second sub-pixel according to the mapped gray level of the second mapped sub-pixel comprises:
Determining a target gray level of the white sub-pixel according to the minimum value in the mapping gray levels of the second mapping sub-pixels corresponding to the second pixel units;
And determining the target gray level of each second sub-pixel in the second pixel unit according to the mapping gray levels of the other second mapping sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel.
3. The driving method of the display panel according to claim 2, wherein the determining the target gray level of the white sub-pixel according to the minimum value of the mapped gray levels of the second mapped sub-pixels corresponding to the second pixel unit comprises:
Bringing the minimum value in the mapping gray scale of the second mapping sub-pixel corresponding to the second pixel unit into a gray scale brightness model to determine the target gray scale of the white sub-pixel in the second pixel unit;
The gray-scale luminance model includes:
wherein X target gray percentage=x target brightness/brightness corresponding to 255 gray.
4. The driving method of the display panel according to claim 3, wherein the determining the target gray level of each of the second sub-pixels in the second pixel unit according to the mapped gray levels of the other second mapped sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel includes:
bringing other mapping gray scales of the sub-pixels corresponding to the minimum value in the mapping gray scales of the second mapping sub-pixels into a gray scale brightness model to determine the preset target gray scale of part of the second sub-pixels;
Bringing the mapping gray scales of other sub-pixels except for the sub-pixel corresponding to the minimum value in the mapping gray scales of the second mapping sub-pixel into a preset target gray scale of a part of the second sub-pixels determined by the gray scale brightness model;
and determining the target gray level of each second sub-pixel in the second pixel unit according to the preset target gray level of each second sub-pixel in the second pixel unit and the target gray level of the white sub-pixel.
5. The driving method of the display panel according to claim 2, wherein the determining the target gray levels of the white sub-pixel and the second sub-pixel according to the mapped gray level of the second mapped sub-pixel comprises:
Determining a target gray level of the white sub-pixel according to a minimum sum of the mapping gray levels of the second mapping sub-pixels of the same color corresponding to the second pixel unit;
And determining the target gray level of each second sub-pixel in the second pixel unit according to the sum of the mapping gray levels of the second mapping sub-pixels of the same color except for the minimum value of the sum of the mapping gray levels of the second mapping sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel.
6. The method according to claim 5, wherein determining the target gray level of the white sub-pixel according to the minimum sum of the mapped gray levels of the second mapped sub-pixels of the same color corresponding to the second pixel unit comprises:
bringing the minimum value in the sum of the mapping gray scales of the second mapping sub-pixels of the same color corresponding to the second pixel unit into a gray scale brightness model to determine the target gray scale of the white sub-pixel in the second pixel unit;
The gray-scale luminance model includes:
wherein X target gray percentage=x target brightness/brightness corresponding to 255 gray.
7. The method according to claim 6, wherein determining the target gray level of each of the second sub-pixels in the second pixel unit according to the sum of the mapped gray levels of the second mapped sub-pixels of the same color other than the minimum sum of the mapped gray levels of the second mapped sub-pixels corresponding to the second pixel unit and the target gray level of the white sub-pixel comprises:
Bringing the mapping gray scales of other sub-pixels except for the sub-pixel corresponding to the minimum value of the mapping gray scale sum of the second mapping sub-pixels into a preset target gray scale of a part of the second sub-pixels determined by the gray scale brightness model;
and determining the target gray level of each second sub-pixel in the second pixel unit according to the preset target gray level of each second sub-pixel in the second pixel unit and the target gray level of the white sub-pixel.
8. The driving method of the display panel according to claim 1, wherein the displaying according to the target gray level of the first subpixel, and the target gray level of the white subpixel and the target gray level of the second subpixel comprises:
Determining a first driving voltage of each first pixel unit of the first display area according to the target gray scale of the first sub-pixel;
Determining a second driving voltage corresponding to the white sub-pixel according to the target gray level of the white sub-pixel and determining a third driving voltage of the second sub-pixel according to the target gray level of the second sub-pixel;
and driving each first pixel unit of the first display area and each second pixel unit of the second display area to display in a target gray scale according to the first driving voltage, the second driving voltage and the third driving voltage.
9. The driving method of a display panel according to claim 1, wherein in the second display region, the area of the white sub-pixel is A1, and the sum of the areas of the N color second sub-pixels is A2, and A2 < A1 < 6A2.
10. A display panel, comprising a first display area and a second display area, wherein the second display area is multiplexed into a light sensing element setting area;
The first display area comprises a plurality of first pixel units which are arranged in an array manner, and the second display area comprises a plurality of second pixel units which are arranged in an array manner; the first pixel unit comprises N colored first sub-pixels; the second pixel unit comprises a white sub-pixel and N colored second sub-pixels; the pixel density of the first display area is greater than that of the second display area;
the second display area is in a light transmission state when the light sensing element works, and external light rays are incident to the light sensing element through the second display area;
The second display area is in an opaque state when the display panel is displayed in a full screen mode, and the second pixel unit realizes normal display of the second display area;
The display panel includes a driving unit that performs a driving method of:
Acquiring gray scale information of a single frame image;
Determining the target gray level of the first sub-pixel according to the gray level information of the single-frame image and the position information of the first pixel unit;
determining the mapping gray scale of a second mapping sub-pixel of the second pixel unit according to the gray scale information of the single frame image and the position information of the second pixel unit, wherein the second mapping sub-pixel corresponds to the first sub-pixels with N colors;
determining target gray scales of the white sub-pixel and the second sub-pixel according to the mapping gray scale of the second mapping sub-pixel;
And displaying according to the target gray level of the first sub-pixel, the target gray level of the white sub-pixel and the target gray level of the second sub-pixel.
11. The display panel of claim 10, wherein the second pixel unit includes a first region in which the N-color second sub-pixels are disposed and a second region in which the white sub-pixels are disposed; the second sub-pixels of the N colors are sequentially and circularly arranged along the first direction; the white sub-pixels are alternately arranged with the first areas along a second direction;
wherein the first direction and the second direction intersect.
12. The display panel of claim 10, wherein the second pixel unit includes a first region in which the N-color second sub-pixels are disposed and a second region in which the white sub-pixels are disposed; the second sub-pixels of the N colors are sequentially and circularly arranged along the first direction, and the white sub-pixels and the first area are alternately arranged; the white sub-pixels are alternately arranged with the first areas along a second direction;
wherein the first direction and the second direction intersect.
13. The display panel of claim 10, wherein the first pixel unit has an area S1 and the second pixel unit has an area S2, S1-S2-5S 1.
14. The display panel of claim 10, wherein in the second display area, the area of the white subpixel is A1 and the sum of the areas of the N color second subpixels is A2, A2 < A1 < 6A2.
15. The display panel according to any one of claims 10 to 14, wherein the first pixel unit and the second pixel unit display a picture simultaneously.
16. A display device comprising the display panel according to any one of claims 10 to 14; further comprises: the light sensing element is arranged in the second display area of the display panel and is positioned at one side deviating from the light emitting surface of the display panel, and the light sensing surface of the light sensing element faces the display panel.
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