CN112562568A - Display panel driving method, display panel and display device - Google Patents
Display panel driving method, display panel and display device Download PDFInfo
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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 a 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-pixel with N colors; determining the 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 scale of the first sub-pixel, the target gray scale of the white sub-pixel and the target gray scale 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
Technical Field
The present invention relates to the field of display panel technologies, 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 day by day, and the permeability of the market on the whole screen is close to 70 percent. The screen occupation ratio is the ratio of the screen area to the whole machine area, and higher screen occupation ratio can bring better visual experience to users.
Because the cell-phone openly need place the camera, parts such as light sensor, the current solution that realizes the display panel full-scale screen display is usually through dividing into first region and second region with display panel's display area, the pixel density that sets up first region is less than the pixel density in second region, and then guarantee that first region can reserve a large amount of spaces and make light see through, nevertheless because the pixel density in first region and second region has the difference, must exist when display panel is in the demonstration stage, the luminance of first region and the regional display frame of second has the difference, influence display panel and realize the effect that full-scale screen displayed.
Disclosure of Invention
The embodiment of the invention provides a driving method of a display panel, the display panel and a display device, which are used for realizing full-screen display and ensuring the uniformity of display effects of a first display area and a second display area.
In a first aspect, an embodiment of the present invention provides a driving method for 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 comprises a white sub-pixel and N-color second sub-pixels, and the driving method comprises the following steps:
acquiring gray scale information of a single-frame image;
determining a target gray scale of the first sub-pixel according to gray scale information of a 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-pixel 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 scale of the first sub-pixel, the target gray scale of the white sub-pixel and the target gray scale 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 reused as a light sensing element setting area;
the first display area comprises a plurality of first pixel units arranged in an array, and the second display area comprises a plurality of second pixel units arranged in an array; 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-transmitting state when the light sensing element works, and external light enters 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 achieves 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 of 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 on one side departing from the light emergent surface of the display panel, and the light sensitive surface of the light sensing element faces the display panel.
The display panel driving method, the display panel and the display device provided by the embodiment of the invention are characterized in that 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, a mapping gray scale of the second mapping sub-pixel of the second pixel unit is determined, namely, a mapping gray scale corresponding to the same mapping gray scale of the sub-pixel of the second pixel unit and the sub-pixel of the first pixel unit is determined, then, according to the mapping gray scale of the second mapping sub-pixel, a target gray scale of the white sub-pixel and the second sub-pixel when the second pixel unit is the white sub-pixel and the N colored second sub-pixel is determined, the target gray scale of the white sub-pixel in the second pixel unit and the mapping gray scale of the second mapping sub-pixel, which has the same target gray scale as the sub-pixel in the first pixel unit, are determined, so that the uniformity of the display effect of the first display area and the second display area 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 illustrating a driving method of the display panel provided in accordance with FIG. 1;
FIG. 3 is a flow chart of another driving method for a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a mapping sub-pixel and a corresponding relationship between a white sub-pixel and a second sub-pixel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another mapping sub-pixel and a corresponding relationship structure between a white sub-pixel and a second sub-pixel according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention;
FIG. 7 is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention;
FIG. 8 is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention;
fig. 9 is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention;
FIG. 10 is a diagram illustrating an arrangement of sub-pixels in a second display area according to an embodiment of the present invention;
FIG. 11 is a diagram illustrating an arrangement of sub-pixels in a second display area according to another 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 present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
With the development of the full-screen, generally, in the prior art, the display area of the display panel is 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, that is, a large amount of space is reserved in the first area to transmit outside light, so that the transmittance of the outside light of the first area is higher, when the pixels of the first area are closed, the image shooting module can shoot 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 normally display images all the time, thereby avoiding opening holes on the display panel to install the image shooting module, and full-screen display cannot be realized. However, since the pixel density of the first area is set to be smaller than the pixel density of the second area, when the display panel is in the display stage, the display brightness of the first area and the display brightness of the second area are different, which affects the display effect of the display panel in the full-screen display.
To solve the above problem, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic flow chart of a driving method of the display panel corresponding 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 a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B), the second pixel units 21 include a white sub-pixel W and second sub-pixels of N colors (the second sub-pixels include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B), and as shown in fig. 2, the driving method includes:
s110, obtaining gray scale information of the single-frame image.
In a frame of display picture, firstly, the gray scale information of the frame of display picture is obtained.
S120, determining the target gray scale of the first sub-pixel according to the gray scale information of the single-frame image and the position information of the first pixel unit.
The display panel is provided with 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, after gray scale information of a single frame image is obtained, gray scale information of the corresponding first pixel unit of the first display area and gray scale information of the corresponding second pixel unit of the second display area are determined, at the moment, a target gray scale of the first sub-pixel in the first pixel unit can be determined according to position information of the first pixel unit, and the determined target gray scale of the first sub-pixel is the same as the gray scale information corresponding to the first display area in the obtained single frame image because the first pixel unit comprises the N colored first sub-pixels.
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-pixel with the 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, 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 to further realize the shooting of the display panel. When the display panel is in the display mode, the N-color second sub-pixels and the white sub-pixels of the second pixel unit in the second display area can be turned on, 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.
Since the prior art sets the second pixel unit in the second display area as the first sub-pixel including N colors or sets the second pixel unit as the first sub-pixel including N colors and the white sub-pixel, when the second pixel unit is the first sub-pixel including N colors, the obtained 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 as the N colors, when the second pixel unit is the first sub-pixel including N colors and the white sub-pixel, the obtained 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 as the N colors, and the white sub-pixel is set in the second display area to mainly enable the external light to pass through the white sub-pixel to realize the photographing of the second display area when the display panel is in the photographing mode, when the display panel is in the display mode, the corresponding white sub-pixel has no corresponding control voltage to realize the brightness compensation of the white sub-pixel to the second display area. When the second pixel units in the second display area comprise the white sub-pixels and the N kinds of 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 scales of the second mapping sub-pixels of the second pixel units are determined according to the gray scale information of the single-frame image and the position information of the second pixel units, namely the mapping gray scales of the second mapping sub-pixels corresponding to the first sub-pixels with the N kinds of colored second pixel units.
S140, determining the target gray levels of the white sub-pixel and the second sub-pixel according to the mapping gray level of the second mapping sub-pixel.
And after the mapping gray scale of the second mapping sub-pixel is determined, determining the white sub-pixel in the second display area corresponding to the second mapping sub-pixel and the target gray scale of the second sub-pixel according to the mapping gray scale of the second mapping sub-pixel.
S150, displaying according to the target gray scale of the first sub-pixel, the target gray scale of the white sub-pixel and the target gray scale of the second sub-pixel.
And after the target gray scale of the first sub-pixel of the first display area, the target gray scale of the white sub-pixel of the second display area and the target gray scale of the second pixel are determined, driving the sub-pixels of the first display area and the second display area of the display panel to display according to the target gray scales.
It should be noted that, in the above embodiment, the first pixel unit is configured to include a first sub-pixel of N colors, and the second pixel unit is configured to include a white sub-pixel and a second sub-pixel of N colors, where the first sub-pixel of N colors is the same as the second sub-pixel of N colors, and the sub-pixels of N colors may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, may also include a yellow sub-pixel, a cyan sub-pixel, and a pink sub-pixel, and may also be sub-pixels of other colors.
The driving method of the display panel provided by the embodiment of the invention is that 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, the mapping gray scale of the second mapping sub-pixel of the second pixel unit is determined, namely, the mapping gray scale corresponding to the sub-pixel of the second pixel unit is the same as the sub-pixel of the first pixel unit, then, according to the mapping gray scale of the second mapping sub-pixel, the target gray scale of the white sub-pixel and the second sub-pixel when the second pixel unit is the white sub-pixel and the N colored second sub-pixels is determined, the target gray scale of the white sub-pixel in the second pixel unit and the mapping gray scale of the second mapping sub-pixel, which has the same target gray scale as the sub-pixel in the first pixel unit, are determined, so that the uniformity of the display effect of the first display area and the second display area is ensured.
Illustratively, when the display panel displays a pure white picture, when the method is adopted to realize the full-screen display of the display panel, the display brightness value of the second display area and the display brightness value of the first display area are within +/-0.005, the chromaticity difference is within +/-0.005, and the turn-on ratio of the corresponding white sub-pixel is 20-50%. When the display panel displays an RGB pure color 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 difference between the chromaticity is within +/-0.010, and the opening ratio of the corresponding white sub-pixel is 0-5%. When the display panel displays a color complex picture, the display brightness value of the second display area and the display brightness value of the first display area are within +/-0.005, the chromaticity difference is within +/-0.01, the chromaticity difference is within +/-0.020, and the opening ratio of the corresponding white sub-pixel is 0-50%.
Optionally, on the basis of the foregoing embodiment, fig. 3 is a flowchart illustrating another driving method of a display panel according to an embodiment of the present invention, and as shown in fig. 3, determining target gray scales of a white sub-pixel and a second sub-pixel according to a mapping gray scale of the second mapping sub-pixel includes:
s210, determining the target gray scale of the white sub-pixel according to the minimum value of the mapping gray scales of the second mapping sub-pixel corresponding to the second pixel unit.
For example, 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 scale of the red sub-pixel Lr included in the second mapping sub-pixel is 127, the gray scale of the green sub-pixel Lg is 255, and the gray scale of the blue sub-pixel Lb is 255, the minimum value of the mapping gray scales of the second mapping sub-pixel is the gray scale value corresponding to the red sub-pixel Lr, and the target gray scale of the white sub-pixel in the second pixel unit is determined by selecting the gray scale 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 gray scale of the red sub-pixel Lr1 included in the second mapping sub-pixel is 127, the gray scale of the red sub-pixel Lr1 is 255, the gray scale of the green sub-pixel Lg1 is 255, the gray scale of the green sub-pixel Lg2 is 25, the gray scale of the blue sub-pixel Lb1 is 255, and the gray scale of the blue sub-pixel Lb2 is 255, the minimum value of the mapping gray scales Lr1 of the second mapping sub-pixel is 255, 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 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 at this time, the first pixel unit located in the first display region includes a red sub-pixel R, a green pixel G, and a blue sub-pixel B. When the second mapping sub-pixels corresponding to the second pixel units comprise red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, the first pixel units located in the first display area comprise red sub-pixels R1 and R2, green pixels G1 and G2, and blue sub-pixels B1 and B2.
Optionally, determining the target gray scale of the white sub-pixel according to the minimum value of the mapping gray scales of the second mapping 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 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, the X target gray scale percentage is the brightness corresponding to the X target brightness/255 gray scales.
For example, 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 green sub-pixel LbThe gray scale of the pixel Lg is 255, the gray scale of the blue sub-pixel Lb is 255, and the gray scale value 127 of the red sub-pixel Lr is selected to be brought into a gray scale brightness model
Illustratively, the gray scale Gamma value of the white sub-pixel is selected to be 2.2, 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, the gray scale value 127 is substituted into the formula, that is, the gray scale value X is 127, the target luminance percentage of the white sub-pixel can be obtained according to the formula, and then the target luminance percentage X is the luminance corresponding to the target luminance/the luminance corresponding to the 255 gray scale, 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 comprises red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, 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 Lg1 is 255, the gray scale of the green sub-pixel Lg2 is 255, the gray scale of the blue sub-pixel Lb1 is 255, the gray scale of the blue sub-pixel Lb2 is 255, and the gray scale value 127 of the red sub-pixel Lr1 is selected to bring the gray scale luminance model into the gray scale luminance model of 255
The luminance information corresponding to the white sub-pixel is obtained.
It should be noted that the above embodiments exemplarily illustrate that the second mapping sub-pixel corresponding to the second pixel unit includes the red sub-pixel Lr, the green sub-pixel Lg and the blue sub-pixel Lb or includes the red sub-pixels Lr1 and Lr2, the green sub-pixels Lg1 and Lg2, the blue sub-pixels Lb1 and Lb2, i.e. 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, two blue sub-pixels Lb1 and Lb2 in the second mapping sub-pixel, in other embodiments, one second pixel unit may be disposed corresponding to 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, which is not specifically limited in the embodiment of the present invention.
S220, determining the target gray scale of each second sub-pixel in the second pixel unit according to the mapping gray scales of other second mapping sub-pixels corresponding to the second pixel unit and the target gray scale of the white sub-pixel.
Optionally, determining the target gray scale of each second sub-pixel in the second pixel unit according to the mapping gray scales of the other second mapping sub-pixels corresponding to the second pixel unit and the target gray scale 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 substituted 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 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 scale value in the mapping sub-pixel to obtain the target gray scale of the white sub-pixel in the second pixel unit, and since there is no other mapping gray scale for the red sub-pixel, the preset target gray scale 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 the red sub-pixels Lr1 and Lr2, the green sub-pixels Lg1 and Lg2, and the blue sub-pixels Lb1 and Lb2, as shown in fig. 5, the red sub-pixel Lr1 is taken as the sub-pixel with the smallest gray scale value in the mapping sub-pixel to obtain the target gray scale of the white sub-pixel in the second pixel unit, and then the other mapping gray scales of the sub-pixels corresponding to the smallest mapping gray scale value in the mapping gray scales of the second mapping sub-pixels can be understood as the gray scales of the other red sub-pixels except the red sub-pixel Lr1 in the mapping gray scales of the second mapping sub-pixels, and the preset target gray scale of the red sub-pixel in the second sub-pixel unit is determined according to the mapping gray scale brightness model of the red sub-pixel Lr2 corresponding to Lr2 in fig. 5.
S320, the mapping gray scales of other sub-pixels except the sub-pixel corresponding to the minimum value in the mapping gray scales of the second mapping sub-pixel are brought into the gray scale brightness model to determine the preset target gray scale of part of the second sub-pixels.
With continued reference to fig. 4, when the second mapping sub-pixel corresponding to the second pixel unit only includes a red sub-pixel Lr, a green sub-pixel Lg and a blue sub-pixel Lb, the red sub-pixel Lr is used as the 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, when the red subpixel Lr is used as the subpixel with the smallest gray level value in the mapping subpixel to obtain the target gray level of the white subpixel Zw in the second pixel unit, the gray scale value corresponding to the green sub-pixel Lg in the second mapping sub-pixel corresponding to the second pixel unit is substituted into the gray scale brightness 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 substituting the gray scale value corresponding to the blue sub-pixel Lb into the gray scale brightness model to determine the preset target gray scale of the blue sub-pixel Zb in the second sub-pixel in the second pixel unit. 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, as shown in fig. 5, the sum of gray scale luminance values corresponding to the green sub-pixels Lg1 and Lg2 in the second mapping sub-pixel corresponding to the second pixel unit is substituted 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 gray scale luminance values corresponding to the blue sub-pixels Lb1 and Lb2 in the second mapping sub-pixel corresponding to the second pixel unit is substituted 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 scale of each second sub-pixel in the second pixel unit according to the preset target gray scale of each second sub-pixel in the second pixel unit and the target gray scale of the white sub-pixel.
Since the white sub-pixel includes a partial gray scale of the red sub-pixel, a partial gray scale of the blue sub-pixel, and a partial gray scale 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, since the target gray scale of the white sub-pixel determined according to the red sub-pixel Lr1 includes the gray scale of the partial red sub-pixel, the gray scale of the partial blue sub-pixel, and the gray scale of the partial green sub-pixel, the target gray scale corresponding to the green sub-pixel Zb in the second pixel unit can be determined by subtracting the target gray scale of the white sub-pixel Zg from the preset target gray scale of the green sub-pixel Zg in the second sub-pixel unit, and the target gray scale of the blue sub-pixel Zb in the second sub-pixel unit in the second pixel unit is determined by subtracting the target gray scale of the blue sub-pixel Zb in the second sub-pixel unit The target gray scale of (1). Since the target gray scale of the white sub-pixel is determined according to the red sub-pixel Lr1, the target gray scale of the red sub-pixel is the same as the preset target gray scale of the red sub-pixel.
It should be noted that, in the above embodiment, all the gray scale values of the sub-pixels corresponding to the minimum value of the mapping gray scales of the second mapping sub-pixel are converted into the target gray scale of the white sub-pixel, in other possible implementations, after the sub-pixel corresponding to the minimum value of the mapping gray scales of the second mapping sub-pixel is determined, a part of the gray scale values in the sub-pixel corresponding to the minimum value may be selected to determine the target gray scale of the white sub-pixel, and the specific value is not limited in the embodiment of the present invention.
It should be noted that the above embodiments exemplarily show a driving method of a display panel, and a specific implementation 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 mapping gray level of the second mapping sub-pixel comprises:
s410, determining the target gray scale of the white sub-pixel according to the minimum value of the sum of the mapping gray scales of the second mapping sub-pixels of the same color corresponding to the second pixel unit.
For example, with 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 scale of the red sub-pixel Lr included in the second mapping sub-pixel is 127, the gray scale of the green sub-pixel Lg is 255, and the gray scale of the blue sub-pixel Lb is 255, at this time, the minimum value of the mapping gray scales of the second mapping sub-pixel is the gray scale value corresponding to the red sub-pixel Lr, and the target gray scale of the white sub-pixel in the second pixel unit is determined by selecting the gray scale value of the red sub-pixel.
In another embodiment, 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 gray scale of the red sub-pixel Lr1 included in the second mapping sub-pixel is 127, the gray scale of the red sub-pixel Lr1 is 255, the gray scale of the green sub-pixel Lg1 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 sum of the mapping gray scales of the same color of the second mapping sub-pixel is the minimum of the gray scale of the red sub-pixel Lr1 and the gray scale of the blue sub-pixel Lb2, and determining the target gray scale of the white sub-pixel in the second pixel unit by selecting the sum of the gray scale values corresponding to the red sub-pixels Lr1 and Lr 2.
Optionally, determining the target gray scale of the white sub-pixel according to the minimum value of the sum of the mapping gray scales of the second mapping sub-pixels of the same color corresponding to the second pixel unit includes:
introducing the minimum value of the sum of the mapping gray scales of each second mapping sub-pixel 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, the X target gray scale percentage is the brightness corresponding to the X target brightness/255 gray scales.
For example, 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, and the gray scale of the blue sub-pixel Lb is 255, the gray scale luminance model is substituted by selecting the gray scale value 127 of the red sub-pixel Lr
Illustratively, the gray scale Gamma value of the white sub-pixel is selected to be 2.2, 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, the gray scale value 127 is substituted into the formula, that is, the gray scale value X is 127, the target luminance percentage of the white sub-pixel can be obtained according to the formula, and then the target luminance percentage X is the luminance corresponding to the target luminance/the luminance corresponding to the 255 gray scale, 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 comprises red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2, 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 Lg1 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 brought into a gray scale model of luminance
The luminance information corresponding to the white sub-pixel is obtained.
S420, determining the target gray scale of each second sub-pixel in the second pixel unit according to the sum of the mapping gray scales of each second mapping sub-pixel of the same color except the sum of the mapping gray scales of the second mapping sub-pixels corresponding to the second pixel unit and the target gray scale of the white sub-pixel.
Optionally, determining the target gray scale of each second sub-pixel in the second pixel unit according to the sum of the mapping gray scales of each second mapping sub-pixel of the same color corresponding to the second pixel unit except the sum of the mapping gray scales of the second mapping sub-pixels and the target gray scale of the white sub-pixel includes:
s510, the mapping gray scales of other sub-pixels except the sub-pixel corresponding to the minimum value of the sum of the mapping gray scales of the second mapping sub-pixel are brought into the gray scale brightness model to determine the preset target gray scale of part of the second sub-pixels.
Since the minimum value of the sum of the mapping gray scales of each second mapping sub-pixel of the same color corresponding to the second pixel unit determines the target gray scale of the white sub-pixel, all the gray scale values of the red sub-pixels in the second mapping sub-pixels are converted into the target gray scale of the white sub-pixel, and at this time, the red sub-pixels in the second pixel unit are at the 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 the sub-pixel with the minimum gray-scale value in the mapping sub-pixel to obtain the target gray scale of the white sub-pixel Zw in the second pixel unit, when the red subpixel Lr is used as the subpixel with the smallest gray level value in the mapping subpixel to obtain the target gray level of the white subpixel Zw in the second pixel unit, the gray scale value corresponding to the green sub-pixel Lg in the second mapping sub-pixel corresponding to the second pixel unit is substituted into the gray scale brightness 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 substituting the gray scale value corresponding to the blue sub-pixel Lb into the gray scale brightness model to determine the preset target gray scale of the blue sub-pixel Zb in the second sub-pixel in the second pixel unit. When the second mapping sub-pixel corresponding to the second pixel unit comprises the red sub-pixels Lr1 and Lr2, the green sub-pixels Lg1 and Lg2, and the 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-pixel corresponding to the second pixel unit is substituted 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-pixel corresponding to the second pixel unit is substituted 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 scale of each second sub-pixel in the second pixel unit according to the preset target gray scale of each second sub-pixel in the second pixel unit and the target gray scale of the white sub-pixel.
After the preset target gray scale of the green sub-pixel Zg in the second sub-pixel and the preset target gray scale of the blue sub-pixel Zb in the second sub-pixel are determined, the target gray scale corresponding to the green sub-pixel Zb in the second pixel unit is determined by subtracting the target gray scale of the white sub-pixel from the preset target gray scale of the green sub-pixel Zg in the second sub-pixel in the second pixel unit, and the target gray scale corresponding to the blue sub-pixel Zb in the second pixel unit is determined by subtracting the target gray scale of the white sub-pixel from the preset target gray scale of the blue sub-pixel Zb in the second sub-pixel in the 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 only red sub-pixels Lr1 and Lr2, green sub-pixels Lg1 and Lg2, and blue sub-pixels Lb1 and Lb2 as an example, in other possible embodiments, the second mapping sub-pixel corresponding to the second pixel unit may 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 embodiments of the present invention do not specifically limit 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.
Optionally, on the basis of the foregoing embodiment, fig. 9 is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention, and as shown in fig. 9, the displaying according to the target gray scale of the first sub-pixel, the target gray scale of the white sub-pixel and the target gray scale of the second sub-pixel 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 scale of the white sub-pixel and determining a third driving voltage of the second sub-pixel according to the target gray scale of the second sub-pixel.
And S630, driving each first pixel unit of the first display area and each second pixel unit of the second display area to display in the target gray scale according to the first driving voltage, the second driving voltage and the third driving voltage.
After the target gray scale of the first sub-pixel is determined, the first driving voltage of each first pixel unit of the first display area is determined according to the target gray scale corresponding to the first sub-pixel, the second driving voltage corresponding to the white sub-pixel is determined according to the target gray scale of the white sub-pixel, the third driving voltage of the second sub-pixel is determined according to the target gray scale of the second sub-pixel, and finally, each first pixel unit of the first display area and each second pixel unit of the second display area are driven to display according to the determined first driving voltage, second driving voltage and third driving voltage, so that full-screen display of the display panel is achieved.
Optionally, with reference to fig. 4 or fig. 5, 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, so that a2 < a1 < 6a 2.
The sum A2 of the area A1 of the white sub-pixel in the second display area and the area of the N-color second sub-pixel meets the condition that A2 is less than A1 and less than 6A2, so that the problem that when the area A1 of the white sub-pixel in the second display area is too small, the photographing effect of the light sensing element in the second display area is influenced when the display panel is in a photographing mode is avoided, and when the area A1 of the white sub-pixel in the second display area is too large, the display effect of the second display area is influenced by the too large white sub-pixel when the display panel is in a display mode.
Optionally, with reference to fig. 1, the display panel includes a first display area 10 and a second display area 20, the second display area 20 is reused as 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 first sub-pixels (RGB) of N colors, the second pixel units 21 include white sub-pixels W and second sub-pixels (RGB) of N colors, and the pixel density of the first display area 10 is greater than the pixel density of the second display area 20. The second display area 20 is in a transparent 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 non-transparent state when the display panel is displayed in a full screen mode, 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, the second display area 20 is reused as 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 first sub-pixels of N colors, and the second pixel unit 21 includes a white sub-pixel and second sub-pixels of N colors. The display panel provided by the embodiment can be a liquid crystal display panel, and a light source is provided through the backlight module. Among them, the liquid crystal display panel generally includes a Color Filter (CF) substrate, a 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 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 can be provided with no color filter, and when the light sensing element works, external light enters 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 opened, and full-screen display of the display panel is achieved.
Optionally, on the basis of the foregoing embodiment, fig. 10 is an arrangement manner of sub-pixels in the second display area according to an embodiment of the present invention, as shown in fig. 10, the second pixel unit includes a first area AA and a second area BB, the 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 cyclically arranged along the first direction X, and the white sub-pixels W and the first area AA are alternately arranged along the second direction Y, where the first direction X intersects the second direction Y.
It is understood that, in this embodiment, the first direction X and the second direction Y are perpendicular to each other, 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 second sub-pixels of N colors include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, which is the same as the following description. The white sub-pixels are arranged on the same line, and the N colored second sub-pixels are sequentially arranged in a circulating mode, so that the wiring complexity in the display panel can be reduced.
Based on the same inventive concept, fig. 11 is another arrangement of sub-pixels in the 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, the 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 cyclically arranged along a first direction X, and the white sub-pixel W is alternately arranged with the first area AA and is alternately arranged with the first area AA along a second direction Y, where the first direction X and the second direction Y intersect.
When the camera works, the white sub-pixels of the second area form a light-transmitting area, the red sub-pixels, the green sub-pixels and the blue sub-pixels of the first area form a non-light-transmitting area, when the light-transmitting area and the non-light-transmitting area are arranged at intervals, a grating structure can be formed, when light transmits through the light-transmitting area, multi-level diffraction stripes can be formed to influence the imaging effect of the camera, therefore, the size of the second area can be set to be changed in an aperiodic mode along the row direction and/or the column direction, the diffraction of the light-transmitting area to the light 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 a display state, the uniformity of a display picture can be further ensured.
It should be noted that fig. 10 and 11 exemplarily show that the white subpixel and the second subpixel in the second display area are circular, and the white subpixel and the second subpixel may also be polygonal, and the specific shapes of the white subpixel and the second subpixel in the second display area are not limited in the embodiment of the present invention.
Optionally, the area of the first pixel unit is S1, the area of the second pixel unit is S2, and S2 is greater than or equal to S1 and less than or equal to 5S 1.
The area S1 of the first pixel unit and the area S2 of the second pixel unit are set to satisfy that S1 is not less than S2 is not less than 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 the same as the area of the second pixel unit, the area of the first pixel unit in the first display area in the prepared display panel is the same as the area of the second pixel unit, so that the preparation complexity of the display panel is reduced, and the area S2 of the second pixel unit is set to be less than or equal to 5 times of the area S1 of the first pixel unit, so that the influence on the display effect of the second display area due to the fact that the number of pixels of the second pixel unit with a larger area is smaller is avoided.
Optionally, in the second display area, the sum of the areas of the white sub-pixels of a1 and the second sub-pixels of N colors is a2, and a2 < a1 < 6a 2.
The sum A2 of the area A1 of the white sub-pixel in the second display area and the area of the N-color second sub-pixel meets the condition that A2 is less than A1 and less than 6A2, so that the problem that when the area A1 of the white sub-pixel in the second display area is too small, the photographing effect of the light sensing element in the second display area is influenced when the display panel is in a photographing mode is avoided, and when the area A1 of the white sub-pixel in the second display area is too large, the display effect of the second display area is influenced by the too large white sub-pixel when the display panel is in a display mode.
Optionally, the first pixel unit and the second pixel unit display the picture synchronously.
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 pictures, so that when the display panel is in a display mode, the first display area and the second display area display a frame of picture, and full-screen display is realized.
Optionally, on the basis of the foregoing embodiment, an embodiment of the present invention further provides a display device, where the display device includes the display panel 01 described in any 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 away from the light emitting surface of the display panel 01, and a light sensing surface of the light sensing element 02 faces the display panel 01.
The light-emitting side deviating from the display panel 01 by the light sensing element 02 is arranged, so that the shielding of light rays 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 dispose 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 thereto.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. 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, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (16)
1. A driving method of a display panel comprises a first display area and a second display area, wherein the first display area comprises a plurality of first pixel units arranged in an array, and the second display area comprises a plurality of second pixel units arranged in an array; the first pixel unit comprises N colored first sub-pixels; the second pixel unit comprises a white sub-pixel and N-color second sub-pixels, and the driving method comprises the following steps:
acquiring gray scale information of a single-frame image;
determining a target gray scale of the first sub-pixel according to gray scale information of a 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-pixel 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 scale of the first sub-pixel, the target gray scale of the white sub-pixel and the target gray scale of the second sub-pixel.
2. The method of claim 1, wherein 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 scale of the white sub-pixel according to a minimum value in mapping gray scales of the second mapping sub-pixel corresponding to the second pixel unit;
and determining the target gray scale of each second sub-pixel in the second pixel unit according to the mapping gray scales of other second mapping sub-pixels corresponding to the second pixel unit and the target gray scale of the white sub-pixel.
3. The method for driving a 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-pixel corresponding to the second pixel unit comprises:
bringing the minimum value of 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 grayscale luminance model includes:
wherein, the X target gray scale percentage is the brightness corresponding to the X target brightness/255 gray scales.
4. The method as claimed in claim 3, wherein the 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 comprises:
bringing other mapping gray scales of the sub-pixel corresponding to the minimum value in the mapping gray scales of the second mapping sub-pixel into a gray scale brightness model to determine a preset target gray scale of a part of the second sub-pixel;
bringing the mapping gray scales of other sub-pixels except the sub-pixel corresponding to the minimum value in the mapping gray scales of the second mapping sub-pixel into a gray scale brightness model to determine a preset target gray scale of part of the second sub-pixel;
and determining the target gray scale of each second sub-pixel in the second pixel unit according to the preset target gray scale of each second sub-pixel in the second pixel unit and the target gray scale of the white sub-pixel.
5. The method of claim 2, wherein 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 scale of the white sub-pixel according to the minimum value of the sum of the mapping gray scales of the second mapping sub-pixels of the same color corresponding to the second pixel unit;
and determining the target gray scale of each second sub-pixel in the second pixel unit according to the sum of the mapping gray scales of each second mapping sub-pixel of the same color except the sum of the mapping gray scales of the second mapping sub-pixels corresponding to the second pixel unit and the target gray scale of the white sub-pixel.
6. The method as claimed in claim 5, wherein the 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:
introducing the minimum value of the sum of the mapping gray scales of each second mapping sub-pixel 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 grayscale luminance model includes:
wherein, the X target gray scale percentage is the brightness corresponding to the X target brightness/255 gray scales.
7. The method as claimed in claim 6, wherein the determining the target gray levels 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 except the minimum sum of the mapped gray levels of the second mapped sub-pixels and the target gray level of the white sub-pixel corresponding to the second pixel unit comprises:
bringing the mapping gray scales of other sub-pixels except the sub-pixel corresponding to the minimum value of the sum of the mapping gray scales of the second mapping sub-pixel into a gray scale brightness model to determine a preset target gray scale of part of the second sub-pixel;
and determining the target gray scale of each second sub-pixel in the second pixel unit according to the preset target gray scale of each second sub-pixel in the second pixel unit and the target gray scale of the white sub-pixel.
8. The method of claim 1, wherein the displaying according to the target gray scale of the first sub-pixel, the target gray scale of the white sub-pixel and the target gray scale of the second sub-pixel 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 scale of the white sub-pixel and determining a third driving voltage of the second sub-pixel according to the target gray scale 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 method for driving 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-colored second sub-pixels is a2, so that a2 < a1 < 6a 2.
10. A display panel is characterized by comprising a first display area and a second display area, wherein the second display area is reused as a light sensing element setting area;
the first display area comprises a plurality of first pixel units arranged in an array, and the second display area comprises a plurality of second pixel units arranged in an array; 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-transmitting state when the light sensing element works, and external light enters 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 achieves normal display of the second display area.
11. The display panel according to claim 10, wherein the second pixel unit includes a first region in which the second sub-pixels of the N colors are disposed and a second region in which the white sub-pixels are disposed; along the first direction, the second sub-pixels of the N colors are sequentially arranged in a circulating way; the white sub-pixels are alternately arranged with the first regions along a second direction;
wherein the first direction and the second direction intersect.
12. The display panel according to claim 10, wherein the second pixel unit includes a first region in which the second sub-pixels of the N colors are disposed and a second region in which the white sub-pixels are disposed; along a first direction, the second sub-pixels of the N colors are sequentially and circularly arranged, and the white sub-pixels and the first area are alternately arranged; the white sub-pixels are alternately arranged with the first regions 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 of S1, and the second pixel unit has an area of S2, S1 ≦ S2 ≦ 5S 1.
14. The display panel according to claim 10, wherein in the second display region, the area of the white sub-pixel is a1, and the sum of the areas of the N-colored second sub-pixels is a2, so that a2 < a1 < 6a 2.
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 synchronously.
16. A display device comprising the display panel according to any one of claims 10 to 14; further comprising: the light sensing element is arranged in the second display area of the display panel and is positioned on one side departing from the light emergent surface of the display panel, and the light sensitive surface of the light sensing element faces the display panel.
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| CN113963662A (en) * | 2021-08-27 | 2022-01-21 | 上海和辉光电股份有限公司 | Driving method and driving device of OLED device |
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| CN113112950A (en) * | 2021-04-27 | 2021-07-13 | 合肥维信诺科技有限公司 | Image display method, signal generation device, display device, and storage medium |
| CN113963662A (en) * | 2021-08-27 | 2022-01-21 | 上海和辉光电股份有限公司 | Driving method and driving device of OLED device |
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