CN109767741B - Display method and display device of display panel - Google Patents
Display method and display device of display panel Download PDFInfo
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- CN109767741B CN109767741B CN201910232019.1A CN201910232019A CN109767741B CN 109767741 B CN109767741 B CN 109767741B CN 201910232019 A CN201910232019 A CN 201910232019A CN 109767741 B CN109767741 B CN 109767741B
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Abstract
The embodiment of the application provides a display method and a display device of a display panel, which are used for solving the technical problem that the RGBW display panel in the prior art is poor in display effect. The method comprises the following steps: determining an R sub-pixel brightness value, a G sub-pixel brightness value, a B sub-pixel brightness value and a W sub-pixel brightness value of each pixel in a picture to be displayed; modifying the brightness value of the W sub-pixel of a first type of pixel to enable the modified brightness value of the W sub-pixel of the first type of pixel to be smaller than the brightness value of the W sub-pixel before modification, and obtaining the final brightness value of the first type of pixel, wherein the first type of pixel is a pixel in a character display area in a picture to be displayed; and driving the pixel unit corresponding to the first-class pixel in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the first-class pixel.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a display method and a display device of a display panel.
Background
At present, in order to improve the Display brightness of a Display panel such as a Liquid Crystal Display (LCD) panel, an Organic Light Emitting Diode (OLED), etc., a White (W) sub-pixel unit is added to a part or all of the pixel units of the Display panel, and four color sub-pixel units of Red (Red, R), Green (G), Blue (B), and W are formed in one pixel unit. Such a display panel including R, G, B, W four color sub-pixel elements is generally referred to as an RGBW display panel.
Due to the addition of the W sub-pixel units, the difference between the pixel units of the display panel is increased, and the problem of granular sensation of a display picture is caused. Particularly, when a display panel with low pixel density (Pixels Per inc, PPI) displays a picture containing characters, the characters often have phenomena of stroke break points, unclear display, and the like, and the display effect of the display panel is poor.
Disclosure of Invention
The embodiment of the application provides a display method and a display device of a display panel, which are used for solving the technical problem that the RGBW display panel in the prior art is poor in display effect.
In a first aspect, an embodiment of the present application provides a display method of a display panel, where the display panel includes a plurality of pixels, and each of the plurality of pixels includes an R sub-pixel, a G sub-pixel, a B sub-pixel, and a W sub-pixel;
the pixels comprise first type pixels and second type pixels; the first type of pixels are pixels in a character display area in a picture to be displayed, and the second type of pixels are pixels in an image display area in the picture to be displayed;
the method comprises the following steps:
determining an initial brightness value of each pixel in a picture to be displayed; wherein the initial luminance value of the pixel comprises an R sub-pixel luminance value, a G sub-pixel luminance value and a B sub-pixel luminance value;
for each pixel, determining a W sub-pixel brightness value of the pixel according to an R sub-pixel brightness value, a G sub-pixel brightness value and a B sub-pixel brightness value of the pixel;
because the requirements for brightness and color cast of the characters are low when the characters are displayed, but the requirements for granular sensation are high, the embodiment of the application can effectively improve the phenomena of stroke break points, unclear display and the like of the characters by reducing the modified W sub-pixel brightness value of the first type of pixels, avoid the problem of granular sensation of the displayed image and improve the display effect of the display panel.
As an optional implementation manner, in this application, for each pixel, determining a W sub-pixel luminance value of the pixel according to an R sub-pixel luminance value, a G sub-pixel luminance value, and a B sub-pixel luminance value of the pixel includes:
determining the lowest brightness value of the R sub-pixel brightness value, the G sub-pixel brightness value and the B sub-pixel brightness value of the pixel; and determining the lowest brightness value as the brightness value of the W sub-pixel of the pixel.
As an optional implementation manner, in this application, before modifying the W sub-pixel luminance value of the first type of pixel, the method further includes:
determining that the brightness value of the W sub-pixel of the first type of pixel exceeds a first preset value; before modifying the W sub-pixel luminance values of the second class of pixels, the method further comprises: and determining that the brightness value of the W sub-pixel of the second type of pixel exceeds a second preset value.
In this embodiment, only when it is determined that the W sub-pixel luminance value of the first type of pixel exceeds the first preset value, the W sub-pixel luminance value of the first type of pixel is modified, and only when it is determined that the W sub-pixel luminance value of the second type of pixel exceeds the second preset value, the W sub-pixel luminance value of the second type of pixel is modified, which can avoid the problem that the W sub-pixel luminance value is modified too low, thereby better improving the display effect of the display panel.
As an optional implementation manner, in this application, modifying the W sub-pixel brightness value of the first type of pixel includes:
determining character characteristics of the character display area; wherein the character characteristics comprise at least one of font type, font size and font color;
and modifying the W sub-pixel brightness value of the first type of pixel according to the character feature of the character display area.
According to the embodiment, the brightness value of the W sub-pixel of the first type of pixel is modified according to the character characteristics of the character display area, so that the precision of brightness adjustment of the W sub-pixel of the character display area can be improved, and the display effect of the display panel can be further improved.
As an optional implementation manner, in this application, modifying the W sub-pixel brightness value of the first type pixel according to the text feature of the text display area includes:
determining a first sub-adjustment coefficient X corresponding to the font type of the character display area according to the corresponding relation between the font type and the first sub-adjustment coefficient, wherein 0< X < 1;
determining a second sub-adjustment coefficient Y corresponding to the font color of the character display area according to the corresponding relation between the font color and the second sub-adjustment coefficient, wherein 0< Y < 1;
determining a third sub-adjustment coefficient Z corresponding to the font size of the character display area according to the corresponding relation between the font size and the third sub-adjustment coefficient, wherein 0< Z < 1;
performing weighted fusion on the first sub-adjustment coefficient X, the second sub-adjustment coefficient Y and the third sub-adjustment coefficient Z to obtain a first brightness adjustment coefficient (aX + bY + cZ); wherein a, b and c are preset weight coefficients, and 0< (aX + bY + cZ) < 1;
and multiplying the W sub-pixel brightness value in the initial brightness value of the first-class pixel bY the first brightness adjusting coefficient (aX + bY + cZ) to obtain the modified W sub-pixel brightness value of the first-class pixel.
According to the embodiment, the brightness modification value of the W sub-pixel of the first-type pixel is determined in a weighting mode, so that the precision of brightness adjustment of the W sub-pixel of the character display area can be improved, and the display effect of the display panel can be improved better.
As an optional implementation manner, in this application, modifying the W sub-pixel brightness value of the first type of pixel includes:
dividing the character display area into a plurality of sub-character display areas; the character characteristics of different sub-character display areas in the plurality of sub-character display areas are different;
and modifying the W sub-pixel brightness value of the first type of pixels in each sub-text display area according to the text characteristics of each sub-text display area.
According to the embodiment, the W sub-pixel brightness is adjusted in the regions with different character characteristics, so that the precision of adjusting the W sub-pixel brightness in the character display region can be further improved, and the display effect of the display panel can be further improved.
As an optional implementation manner, in this application, modifying the W sub-pixel luminance value of the second type of pixel includes:
determining a color mode of the image display area; wherein the color mode comprises a black-and-white mode and a color mode;
and modifying the W sub-pixel brightness value of the second type of pixel according to the color mode of the image display area.
In the present embodiment, the display effect of the display panel is further improved by modifying the luminance value of the W sub-pixel of the image display area according to the color mode of the image display area, in addition to adjusting the luminance value of the W sub-pixel of the image display area.
As an optional implementation manner, in this application, modifying the W sub-pixel brightness value of the second type of pixel according to the color mode of the image display area includes:
dividing the image display area into a plurality of sub-image display areas; wherein the color modes of different sub-image display areas in the plurality of sub-image display areas are different;
and modifying the W sub-pixel brightness value of the second type of pixel in each sub-image display area according to the color mode of each sub-image display area.
According to the embodiment, the W sub-pixel brightness adjustment is respectively carried out on the areas with different color modes, so that the precision of the W sub-pixel brightness adjustment of the image display area can be further improved, and the display effect of the display panel can be further improved.
As an optional implementation manner, in the embodiment of the present application, a ratio of the modified W sub-pixel luminance value of the first type pixel to the luminance value of the white light obtained by mixing the R, G, B sub-pixels of the first type pixel has a value range of [ 50%, 100% ].
By the embodiment, the problem that the brightness value of the W sub-pixel is excessively low in a modified mode can be avoided, and the display effect of the display panel is better improved.
In a second aspect, embodiments of the present application provide a display device of a display panel, the display panel including a plurality of pixels, each of the plurality of pixels including an R sub-pixel, a G sub-pixel, a B sub-pixel, and a W sub-pixel;
the pixels comprise first type pixels and second type pixels; the first type of pixels are pixels in a character display area in a picture to be displayed, and the second type of pixels are pixels in an image display area in the picture to be displayed;
the device comprises:
the determining module is used for determining the initial brightness value of each pixel in the picture to be displayed; wherein the initial luminance value of the pixel comprises an R sub-pixel luminance value, a G sub-pixel luminance value and a B sub-pixel luminance value; for each pixel, determining a W sub-pixel brightness value of the pixel according to an R sub-pixel brightness value, a G sub-pixel brightness value and a B sub-pixel brightness value of the pixel;
a modifying module, configured to modify a W sub-pixel luminance value of the first class pixel to obtain a final luminance value of the first class pixel, where the modified W sub-pixel luminance value of the first class pixel is smaller than the W sub-pixel luminance value before modification, and the final luminance value of the first class pixel includes an R sub-pixel luminance value, a G sub-pixel luminance value, a B sub-pixel luminance value, and a modified W sub-pixel luminance value of the first class pixel; modifying the W sub-pixel brightness value of the second type of pixel to obtain a final brightness value of the second type of pixel, wherein the final brightness value of the second type of pixel comprises an R sub-pixel brightness value, a G sub-pixel brightness value, a B sub-pixel brightness value and the modified W sub-pixel brightness value of the second type of pixel;
the driving module is used for driving a pixel unit corresponding to the first type of pixel in a display screen to shine by adopting a driving voltage corresponding to the final brightness value of the first type of pixel; and driving the pixel units corresponding to the second type of pixels in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the second type of pixels.
As an optional implementation manner, in an implementation of the present application, the determining module is specifically configured to:
for each pixel, determining a W sub-pixel luminance value for the pixel based on the R, G, and B sub-pixel luminance values for the pixel, comprising:
determining the lowest brightness value of the R sub-pixel brightness value, the G sub-pixel brightness value and the B sub-pixel brightness value of the pixel;
and determining the lowest brightness value as the brightness value of the W sub-pixel of the pixel.
As an optional implementation manner, in this application, before the modifying module modifies the W sub-pixel luminance value of the first type pixel, the determining module is further configured to: determining that the brightness value of the W sub-pixel of the first type of pixel exceeds a first preset value;
before the modifying module modifies the W sub-pixel luminance values of the second class of pixels, the determining module is further configured to: and determining that the brightness value of the W sub-pixel of the second type of pixel exceeds a second preset value.
As an optional implementation manner, in this application implementation, the modification module is configured to:
determining character characteristics of the character display area; wherein the character characteristics comprise at least one of font type, font size and font color;
and modifying the W sub-pixel brightness value of the first type of pixel according to the character feature of the character display area.
As an optional implementation manner, in this application implementation, the modification module is configured to:
determining a first sub-adjustment coefficient X corresponding to the font type of the character display area according to the corresponding relation between the font type and the first sub-adjustment coefficient, wherein 0< X < 1;
determining a second sub-adjustment coefficient Y corresponding to the font color of the character display area according to the corresponding relation between the font color and the second sub-adjustment coefficient, wherein 0< Y < 1;
determining a third sub-adjustment coefficient Z corresponding to the font size of the character display area according to the corresponding relation between the font size and the third sub-adjustment coefficient, wherein 0< Z < 1;
performing weighted fusion on the first sub-adjustment coefficient X, the second sub-adjustment coefficient Y and the third sub-adjustment coefficient Z to obtain a first brightness adjustment coefficient (aX + bY + cZ); wherein a, b and c are preset weight coefficients, and 0< (aX + bY + cZ) < 1;
and multiplying the W sub-pixel brightness value in the initial brightness value of the first-class pixel bY the first brightness adjusting coefficient (aX + bY + cZ) to obtain the modified W sub-pixel brightness value of the first-class pixel.
As an optional implementation manner, in this application implementation, the modification module is configured to:
dividing the character display area into a plurality of sub-character display areas; the character characteristics of different sub-character display areas in the plurality of sub-character display areas are different;
and modifying the W sub-pixel brightness value of the first type of pixels in each sub-text display area according to the text characteristics of each sub-text display area.
As an optional implementation manner, in this application implementation, the modification module is configured to:
determining a color mode of the image display area; wherein the color mode comprises a black-and-white mode and a color mode;
and modifying the W sub-pixel brightness value of the second type of pixel according to the color mode of the image display area.
As an optional implementation manner, in this application implementation, the modification module is configured to:
dividing the image display area into a plurality of sub-image display areas; wherein the color modes of different sub-image display areas in the plurality of sub-image display areas are different;
and modifying the W sub-pixel brightness value of the second type of pixel in each sub-image display area according to the color mode of each sub-image display area.
In a third aspect, an embodiment of the present application provides a display device of a display panel, including:
at least one processor, and
a memory communicatively coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, and the at least one processor executes the method according to the first aspect of the embodiments or any one of the optional embodiments of the first aspect by executing the instructions stored in the memory.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, which stores computer instructions that, when executed on a computer, cause the computer to perform the method according to the first aspect or any one of the optional implementation manners of the first aspect of the present application.
The beneficial effect of this application is as follows:
in the embodiment of the application, firstly, the brightness value of the W sub-pixel of each pixel in a picture to be displayed is determined according to the brightness value of the R sub-pixel, the brightness value of the G sub-pixel and the brightness value of the B sub-pixel; then, respectively modifying the W sub-pixel brightness value of the pixel (namely, the first-class pixel) in the character display area in the picture to be displayed, so that the modified W sub-pixel brightness value of the first-class pixel is smaller than the W sub-pixel brightness value before modification, thereby obtaining the final brightness value of the first-class pixel, and modifying the W sub-pixel brightness value of the pixel (namely, the second-class pixel) in the picture to be displayed in the image display area, thereby obtaining the final brightness value of the second-class pixel; and finally, driving the pixel unit corresponding to the first type of pixel in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the first type of pixel, and driving the pixel unit corresponding to the second type of pixel in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the second type of pixel. Because the requirements for brightness and color cast of the characters are low when the characters are displayed, but the requirements for granular sensation are high, the embodiment of the application can effectively improve the phenomena of stroke break points, unclear display and the like of the characters by reducing the modified W sub-pixel brightness value of the first type of pixels, avoid the problem of granular sensation of the displayed image and improve the display effect of the display panel.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the present disclosure.
FIG. 1 is a schematic structural diagram of an RGBW display panel in the prior art;
FIG. 2 is a schematic diagram of another RGBW display panel in the prior art;
FIG. 3 is a flowchart illustrating a display method of a display panel according to an embodiment of the present disclosure;
FIGS. 4a to 4e are schematic structural diagrams of RGBW display panels in embodiments of the present application;
FIG. 5 is a schematic diagram of a display device of a display panel according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a display device of another possible display panel in the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments of a display device provided in an embodiment of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are for purposes of illustration and explanation only and are not intended to limit the present application. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be understood that the terms first, second, etc. in the description of the embodiments of the present application are used for distinguishing between the descriptions and not for indicating or implying relative importance or order. In the description of the embodiments of the present application, "a plurality" means two or more.
The term "and/or" in the embodiment of the present application is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Display panels such as liquid crystal display panels LCD and OLED each have a plurality of pixel units arranged in a matrix form. A conventional pixel cell generally includes sub-pixel cells of three colors, Red (R), Green (G) and Blue (B), each of which is controlled by a corresponding Thin Film Transistor (TFT). R, G, B color filters used in the prior art are all absorption type color layers, when light is incident, only light of corresponding color can pass through, and light of other two colors is absorbed, so that the light transmittance of the display panel is low. Thus, RGBW display panels have appeared, i.e. four color sub-pixel cells of red, green, blue, White (W) are formed in one pixel cell.
For example, referring to fig. 1, a white light-transmitting region (white sub-pixel unit) is disposed in a part or all of the color sub-pixels, and since the transmittance of the white light-transmitting region is higher than that of the color sub-pixels, the transmittance of the display substrate is effectively improved by disposing the white light-transmitting region in the color sub-pixels, thereby improving the transmittance of the display device.
For another example, referring to fig. 2, the pixel structure of the display panel is a 4 × 4 arrangement structure, which includes four sets of pixel units arranged in a staggered manner, each set of pixel units is composed of an R sub-pixel 101, a G sub-pixel 102, a B sub-pixel 103, and a W sub-pixel 104, and they are spliced and arranged in a line, adjacent sets of pixel units are staggered by a distance of one sub-pixel in the horizontal direction, the first set of pixel units and the third set of pixel units are in the same column, and the second set of pixel units and the fourth set of pixel units are in the same column. The addition of the W sub-pixel 104 increases the aperture opening ratio, improves the brightness of the display panel, reduces the cost and the power consumption, and can obtain more vivid display effect.
RGBW display panels are mainly used in high brightness and low power industries, and there is a general need in this field that high PPI is not required. However, in practical implementation, when the RGBW display panel with low PPI displays a picture containing characters, the characters often have stroke break points and are displayed unclearly.
This is because the RGBW display panel has a different pixel arrangement from the standard RGB display panel, and in the RGBW display panel, the arrangement of the sub-pixels between different pixels is different. Particularly, when a screen with white characters on black is displayed, the transmittance of the W sub-pixel unit is high, so that the pixel unit containing the W sub-pixel unit is brighter than the pixel unit without the W sub-pixel unit, thereby causing a problem of granular feeling of the display screen and poor display effect of the display panel.
In order to solve the technical problems in the prior art, embodiments of the present application provide a display method and a display device of a display panel.
First, a display panel in an embodiment of the present application will be described.
The display panel in the implementation of the application comprises a plurality of pixel units, and the display units on the display panel correspond to pixels on a picture to be displayed one by one. Each pixel unit in the plurality of pixel units further comprises an R sub-pixel unit, a G sub-pixel unit, a B sub-pixel unit and a W sub-pixel unit, and the pixels on the picture to be displayed comprise the R sub-pixel, the G sub-pixel, the B sub-pixel and the W sub-pixel.
The specific implementation of the W sub-pixel unit on the display panel may be that a white transparent area is disposed in a color sub-pixel unit (e.g., an R sub-pixel unit, a G sub-pixel unit, a B sub-pixel unit) as shown in fig. 1, such as the pixel unit structure shown in fig. 4a and 4B; the mode shown in fig. 2 may also be a mode in which a W sub-pixel unit is separately arranged in a pixel structure of a display panel, such as the pixel unit structures shown in fig. 4c, 4d, and 4e, and the embodiment of the present application does not limit the arrangement mode of R, G, B, W sub-pixel units.
Next, a display method provided in the embodiment of the present application is described.
Referring to fig. 3, the display method includes the following steps:
s301, determining an initial brightness value of each pixel in a picture to be displayed;
the initial brightness value of the pixel comprises an R sub-pixel brightness value, a G sub-pixel brightness value and a B sub-pixel brightness value;
s302, aiming at each pixel, determining a W sub-pixel brightness value of the pixel according to an R sub-pixel brightness value, a G sub-pixel brightness value and a B sub-pixel brightness value of the pixel;
s303, modifying the brightness value of the W sub-pixel of the first-class pixel to obtain the final brightness value of the first-class pixel; modifying the brightness value of the W sub-pixel of the second type of pixel to obtain the final brightness value of the second type of pixel;
the first type of pixels are pixels in a character display area in the picture to be displayed. The modified W sub-pixel brightness value of the first type of pixel is smaller than the W sub-pixel brightness value before modification, and the final brightness value of the first type of pixel comprises an R sub-pixel brightness value, a G sub-pixel brightness value, a B sub-pixel brightness value and the modified W sub-pixel brightness value of the first type of pixel.
And the second type of pixels are pixels in an image display area in the picture to be displayed. The luminance value of the W sub-pixel after the second type of pixel is modified may be greater than the luminance value of the W sub-pixel before the modification, may also be less than the luminance value of the W sub-pixel before the modification, and may also be equal to the luminance value of the W sub-pixel before the modification. The final luminance values of the second type pixels comprise R sub-pixel luminance values, G sub-pixel luminance values, B sub-pixel luminance values and modified W sub-pixel luminance values of the second type pixels.
S304, driving a pixel unit corresponding to the first-class pixel in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the first-class pixel; and driving the pixel units corresponding to the second type of pixels in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the second type of pixels.
In the embodiment of the application, firstly, the brightness value of the W sub-pixel of each pixel in a picture to be displayed is determined according to the brightness value of the R sub-pixel, the brightness value of the G sub-pixel and the brightness value of the B sub-pixel; then, respectively modifying the W sub-pixel brightness value of the pixel (namely, the first-class pixel) in the character display area in the picture to be displayed, so that the modified W sub-pixel brightness value of the first-class pixel is smaller than the W sub-pixel brightness value before modification, thereby obtaining the final brightness value of the first-class pixel, and modifying the W sub-pixel brightness value of the pixel (namely, the second-class pixel) in the picture to be displayed in the image display area, thereby obtaining the final brightness value of the second-class pixel; and finally, driving the pixel unit corresponding to the first type of pixel in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the first type of pixel, and driving the pixel unit corresponding to the second type of pixel in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the second type of pixel. Because the requirements for brightness and color cast of the characters are low when the characters are displayed, but the requirements for granular sensation are high, the embodiment of the application can effectively improve the phenomena of stroke break points, unclear display and the like of the characters by reducing the modified W sub-pixel brightness value of the first type of pixels, avoid the problem of granular sensation of the displayed image and improve the display effect of the display panel.
It should be noted that, in a specific implementation, when the step S303 is executed, only the luminance value of the W sub-pixel of the first type pixel may be modified, and the luminance value of the W sub-pixel of the second type pixel may remain unchanged, that is, the modified luminance value of the W sub-pixel of the second type pixel is equal to the luminance value of the W sub-pixel before modification. Under the implementation mode, the phenomena of stroke break points, unclear display and the like of characters can be improved, the problem of granular sensation of display pictures is avoided, and the display effect of the display panel is improved.
As an optional implementation manner, in the embodiment of the present application, a ratio of the modified W sub-pixel luminance value of the first type pixel to the luminance value of the white light obtained by mixing the R, G, B sub-pixels of the first type pixel has a value range of [ 50%, 100% ].
By the embodiment, the problem that the brightness value of the W sub-pixel is excessively low in a modified mode can be avoided, and the display effect of the display panel is better improved.
As an optional implementation manner, in the embodiment of the present application, when it is determined that the luminance value of the W sub-pixel of the first type of pixel exceeds a first preset value, the luminance value of the W sub-pixel of the first type of pixel may be modified; and modifying the W sub-pixel brightness value of the second type of pixel when the W sub-pixel brightness value of the second type of pixel is determined to exceed a second preset value.
In a specific implementation, the modifying processes of the W sub-pixel brightness values of the first-type pixels may be independent from each other, so that only the W sub-pixel brightness value of the first-type pixel whose W sub-pixel brightness value exceeds the first preset value may be modified, and the W sub-pixel brightness value of the first-type pixel whose W sub-pixel brightness value does not exceed the first preset value may maintain the original brightness value. In addition, the first preset values corresponding to any two different first-type pixels may be the same or different, and the embodiments of the present invention are not limited specifically.
One possible implementation of determining the first preset value is listed here: the luminance value obtained by multiplying the luminance value of the white light mixed by R, G, B sub-pixels in a certain first type of pixel unit by 50% is the first preset value corresponding to the first type of pixel unit, that is, the first preset value is set to ensure that the ratio (ratio) of the luminance value of the modified W sub-pixel to the luminance value of the white light mixed by R, G, B sub-pixels cannot be lower than 50%.
Similarly, the modification processes of the W sub-pixel luminance values of the second-type pixels may be independent from each other, so that only the W sub-pixel luminance value of the second-type pixel whose luminance value exceeds the second preset value may be modified, and the W sub-pixel luminance value of the second-type pixel whose luminance value does not exceed the second preset value may maintain the original luminance value. Moreover, the second preset values corresponding to any two different second-type pixels may be the same or different, and the embodiment of the present invention is not limited specifically.
In this embodiment, only when it is determined that the W sub-pixel luminance value of the first type of pixel exceeds the first preset value, the W sub-pixel luminance value of the first type of pixel is modified, and only when it is determined that the W sub-pixel luminance value of the second type of pixel exceeds the second preset value, the W sub-pixel luminance value of the second type of pixel is modified, so that the W sub-pixel luminance value can be better prevented from being modified too low, and the display effect of the display panel can be better improved.
As an optional implementation manner, in this embodiment of the present application, the determination manner of the initial brightness value of the pixel may be: determining the lowest brightness value of the R sub-pixel brightness value, the G sub-pixel brightness value and the B sub-pixel brightness value of the pixel; the lowest luminance value is determined as the W sub-pixel luminance value of the pixel.
As an optional implementation manner, in the embodiment of the present application, a specific implementation manner of modifying the W sub-pixel brightness value of the first-type pixel may be to determine a text feature of the text display area, and then modify the W sub-pixel brightness value of the first-type pixel according to the text feature of the text display area.
The character features may be font type, font size, font color, etc., and the implementation of the present invention is not particularly limited.
When the text feature includes a plurality of items of font type, font size and font color, the brightness modification value of the W sub-pixel of the first type pixel can be determined in a weighted manner. The specific implementation method can comprise the following steps:
1) determining a first sub-adjustment coefficient X corresponding to the font type of the character display area according to the corresponding relation between the font type and the first sub-adjustment coefficient, wherein 0< X < 1;
2) determining a second sub-adjustment coefficient Y corresponding to the font color of the character display area according to the corresponding relation between the font color and the second sub-adjustment coefficient, wherein 0< Y < 1;
3) determining a third sub-adjustment coefficient Z corresponding to the font size of the character display area according to the corresponding relation between the font size and the third sub-adjustment coefficient, wherein 0< Z < 1;
4) performing weighted fusion on the first sub-adjustment coefficient X, the second sub-adjustment coefficient Y and the third sub-adjustment coefficient Z to obtain a first brightness adjustment coefficient (aX + bY + cZ); wherein a, b and c are preset weight coefficients, and 0< (aX + bY + cZ) < 1;
5) and multiplying the W sub-pixel brightness value in the initial brightness value of the first-class pixel bY a first brightness adjusting coefficient (aX + bY + cZ) to obtain the modified W sub-pixel brightness value of the first-class pixel.
According to the embodiment, the brightness value of the W sub-pixel of the first type of pixel is modified according to the character characteristics of the character display area, so that the precision of brightness adjustment of the W sub-pixel of the character display area can be improved, and the display effect of the display panel can be further improved.
In practical situations, a picture may have characters with different characters distributed in different areas. In view of this, as an optional implementation manner, in the embodiment of the present application, the text display area of the picture to be displayed may be first divided into a plurality of sub-text display areas, where text characteristics of different sub-text display areas in the plurality of sub-text display areas are different, and then the W sub-pixel brightness value of the first type of pixel in each sub-text display area is modified according to the text characteristics of each sub-text display area.
According to the embodiment, the W sub-pixel brightness is adjusted in the regions with different character characteristics, so that the precision of adjusting the W sub-pixel brightness in the character display region can be further improved, and the display effect of the display panel can be further improved.
As an optional implementation manner, in the embodiment of the present application, a specific implementation manner of modifying the W sub-pixel luminance value of the second type of pixel may be to determine a color mode of the image display area, where the color mode includes a black-and-white mode and a color mode, and then modify the W sub-pixel luminance value of the second type of pixel according to the color mode of the image display area.
In the present embodiment, the display effect of the display panel is further improved by modifying the luminance value of the W sub-pixel of the image display area according to the color mode of the image display area, in addition to adjusting the luminance value of the W sub-pixel of the image display area.
In practical situations, a picture may have different color patterns of images distributed in different areas. In view of this, as an optional implementation manner, in the embodiment of the present application, the image display area may be divided into a plurality of sub-image display areas, where color modes of different sub-image display areas in the plurality of sub-image display areas are different, and then the W sub-pixel brightness value of the second type of pixel in each sub-image display area is modified according to the color mode of each sub-image display area.
According to the embodiment, the W sub-pixel brightness adjustment is respectively carried out on the areas with different color modes, so that the precision of the W sub-pixel brightness adjustment of the image display area can be further improved, and the display effect of the display panel can be further improved.
Referring to fig. 5, based on the same inventive concept, an embodiment of the present application further provides a display device of a display panel, where the display panel includes a plurality of pixels, and each of the plurality of pixels includes an R sub-pixel, a G sub-pixel, a B sub-pixel, and a W sub-pixel;
the pixels comprise first type pixels and second type pixels; the first type of pixels are pixels in a character display area in a picture to be displayed, and the second type of pixels are pixels in an image display area in the picture to be displayed;
the device comprises:
a determining module 501, configured to determine an initial brightness value of each pixel in a picture to be displayed; wherein the initial luminance value of the pixel comprises an R sub-pixel luminance value, a G sub-pixel luminance value and a B sub-pixel luminance value; for each pixel, determining a W sub-pixel brightness value of the pixel according to an R sub-pixel brightness value, a G sub-pixel brightness value and a B sub-pixel brightness value of the pixel;
a modifying module 502, configured to modify a W sub-pixel luminance value of the first class pixel to obtain a final luminance value of the first class pixel, where the modified W sub-pixel luminance value of the first class pixel is smaller than the W sub-pixel luminance value before modification, and the final luminance value of the first class pixel includes an R sub-pixel luminance value, a G sub-pixel luminance value, a B sub-pixel luminance value, and a modified W sub-pixel luminance value of the first class pixel; modifying the W sub-pixel brightness value of the second type of pixel to obtain a final brightness value of the second type of pixel, wherein the final brightness value of the second type of pixel comprises an R sub-pixel brightness value, a G sub-pixel brightness value, a B sub-pixel brightness value and the modified W sub-pixel brightness value of the second type of pixel;
the driving module 503 is configured to drive a pixel unit corresponding to the first-class pixel in the display screen to emit light by using a driving voltage corresponding to the final brightness value of the first-class pixel; and driving the pixel units corresponding to the second type of pixels in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the second type of pixels.
As an optional implementation manner, in an implementation of the present application, the determining module 501 is specifically configured to:
for each pixel, determining a W sub-pixel luminance value for the pixel based on the R, G, and B sub-pixel luminance values for the pixel, comprising:
determining the lowest brightness value of the R sub-pixel brightness value, the G sub-pixel brightness value and the B sub-pixel brightness value of the pixel;
and determining the lowest brightness value as the brightness value of the W sub-pixel of the pixel.
As an optional implementation manner, in this application, before the modifying module 502 modifies the W sub-pixel luminance value of the first type pixel, the determining module 501 is further configured to: determining that the brightness value of the W sub-pixel of the first type of pixel exceeds a first preset value;
before the modification module 502 modifies the W sub-pixel luminance values of the second type of pixels, the determination module 501 is further configured to: and determining that the brightness value of the W sub-pixel of the second type of pixel exceeds a second preset value.
As an optional implementation manner, in this application, the modifying module 502 is configured to:
determining character characteristics of the character display area; wherein the character characteristics comprise at least one of font type, font size and font color;
and modifying the W sub-pixel brightness value of the first type of pixel according to the character feature of the character display area.
As an optional implementation manner, in this application, the modifying module 502 is configured to:
determining a first sub-adjustment coefficient X corresponding to the font type of the character display area according to the corresponding relation between the font type and the first sub-adjustment coefficient, wherein 0< X < 1;
determining a second sub-adjustment coefficient Y corresponding to the font color of the character display area according to the corresponding relation between the font color and the second sub-adjustment coefficient, wherein 0< Y < 1;
determining a third sub-adjustment coefficient Z corresponding to the font size of the character display area according to the corresponding relation between the font size and the third sub-adjustment coefficient, wherein 0< Z < 1;
performing weighted fusion on the first sub-adjustment coefficient X, the second sub-adjustment coefficient Y and the third sub-adjustment coefficient Z to obtain a first brightness adjustment coefficient (aX + bY + cZ); wherein a, b and c are preset weight coefficients, and 0< (aX + bY + cZ) < 1;
and multiplying the W sub-pixel brightness value in the initial brightness value of the first-class pixel bY the first brightness adjusting coefficient (aX + bY + cZ) to obtain the modified W sub-pixel brightness value of the first-class pixel.
As an optional implementation manner, in this application, the modifying module 502 is configured to:
dividing the character display area into a plurality of sub-character display areas; the character characteristics of different sub-character display areas in the plurality of sub-character display areas are different;
and modifying the W sub-pixel brightness value of the first type of pixels in each sub-text display area according to the text characteristics of each sub-text display area.
As an optional implementation manner, in this application, the modifying module 502 is configured to:
determining a color mode of the image display area; wherein the color mode comprises a black-and-white mode and a color mode;
and modifying the W sub-pixel brightness value of the second type of pixel according to the color mode of the image display area.
As an optional implementation manner, in this application, the modifying module 502 is configured to:
dividing the image display area into a plurality of sub-image display areas; wherein the color modes of different sub-image display areas in the plurality of sub-image display areas are different;
and modifying the W sub-pixel brightness value of the second type of pixel in each sub-image display area according to the color mode of each sub-image display area.
The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the specific implementation manner of the operations executed by the modules can refer to the corresponding steps in the display method in the embodiment of the present application, so the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
Referring to fig. 6, based on the same inventive concept, an embodiment of the present application further provides a display device of a display panel, including:
at least one processor 601, and
a memory 602 communicatively coupled to the at least one processor 601;
the memory 602 stores instructions executable by the at least one processor 601, and the at least one processor 601 executes the display method according to the embodiment of the present application by executing the instructions stored in the memory 602.
As an optional implementation manner, in this application, the processor 601 may specifically include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), one or more integrated circuits for controlling program execution, a hardware circuit developed by using a Field Programmable Gate Array (FPGA), and a baseband processor.
As an alternative embodiment, in the present application, the processor 601 may include at least one processing core.
As an optional implementation manner, in this application implementation, the apparatus further includes a memory 602, and the memory 602 may include a Read Only Memory (ROM), a Random Access Memory (RAM), and a disk memory. The memory 602 is used for storing data required by the processor 601 in operation.
Based on the same inventive concept, embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the display method according to the first aspect of the embodiments or any optional implementation manner of the first aspect of the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (9)
1. A display method of a display panel is characterized in that the display panel comprises a plurality of pixels, and each pixel in the plurality of pixels comprises an R sub-pixel, a G sub-pixel, a B sub-pixel and a W sub-pixel;
the pixels comprise first type pixels and second type pixels; the first type of pixels are pixels in a character display area in a picture to be displayed, and the second type of pixels are pixels in an image display area in the picture to be displayed;
the method comprises the following steps:
determining an initial brightness value of each pixel in a picture to be displayed; wherein the initial luminance value of the pixel comprises an R sub-pixel luminance value, a G sub-pixel luminance value and a B sub-pixel luminance value;
for each pixel, determining a W sub-pixel brightness value of the pixel according to an R sub-pixel brightness value, a G sub-pixel brightness value and a B sub-pixel brightness value of the pixel;
modifying the brightness value of the W sub-pixel of the first-class pixel to obtain a final brightness value of the first-class pixel, wherein the modified brightness value of the W sub-pixel of the first-class pixel is smaller than the brightness value of the W sub-pixel before modification, and the final brightness value of the first-class pixel comprises the brightness value of the R sub-pixel, the brightness value of the G sub-pixel, the brightness value of the B sub-pixel and the brightness value of the modified W sub-pixel of the first-class pixel; modifying the W sub-pixel brightness value of the second type of pixel to obtain a final brightness value of the second type of pixel, wherein the final brightness value of the second type of pixel comprises an R sub-pixel brightness value, a G sub-pixel brightness value, a B sub-pixel brightness value and the modified W sub-pixel brightness value of the second type of pixel;
driving a pixel unit corresponding to the first type of pixels in a display screen to shine by adopting the driving voltage corresponding to the final brightness value of the first type of pixels; driving a pixel unit corresponding to the second type of pixels in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the second type of pixels;
wherein modifying the W sub-pixel luminance values of the first type of pixels comprises:
determining character characteristics of the character display area; wherein the character characteristics comprise at least one of font type, font size and font color;
determining a first sub-adjustment coefficient X corresponding to the font type of the character display area according to the corresponding relation between the font type and the first sub-adjustment coefficient, wherein 0< X < 1;
determining a second sub-adjustment coefficient Y corresponding to the font color of the character display area according to the corresponding relation between the font color and the second sub-adjustment coefficient, wherein 0< Y < 1;
determining a third sub-adjustment coefficient Z corresponding to the font size of the character display area according to the corresponding relation between the font size and the third sub-adjustment coefficient, wherein 0< Z < 1;
performing weighted fusion on the first sub-adjustment coefficient X, the second sub-adjustment coefficient Y and the third sub-adjustment coefficient Z to obtain a first brightness adjustment coefficient (aX + bY + cZ); wherein a, b and c are preset weight coefficients, and 0< (aX + bY + cZ) < 1;
and multiplying the W sub-pixel brightness value in the initial brightness value of the first-class pixel bY the first brightness adjusting coefficient (aX + bY + cZ) to obtain the modified W sub-pixel brightness value of the first-class pixel.
2. The method of claim 1, wherein determining, for each pixel, a W sub-pixel luminance value for the pixel based on the R, G and B sub-pixel luminance values for the pixel comprises:
determining the lowest brightness value of the R sub-pixel brightness value, the G sub-pixel brightness value and the B sub-pixel brightness value of the pixel;
and determining the lowest brightness value as the brightness value of the W sub-pixel of the pixel.
3. The display method of claim 1, wherein prior to modifying the W sub-pixel luminance value of the first type of pixel, the method further comprises:
determining that the brightness value of the W sub-pixel of the first type of pixel exceeds a first preset value;
before modifying the W sub-pixel luminance values of the second class of pixels, the method further comprises:
and determining that the brightness value of the W sub-pixel of the second type of pixel exceeds a second preset value.
4. A method according to any one of claims 1 to 3, wherein modifying the W sub-pixel luminance values of the first type of pixels comprises:
dividing the character display area into a plurality of sub-character display areas; the character characteristics of different sub-character display areas in the plurality of sub-character display areas are different;
and modifying the W sub-pixel brightness value of the first type of pixels in each sub-text display area according to the text characteristics of each sub-text display area.
5. A method according to any one of claims 1 to 3 wherein modifying the W sub-pixel luminance values of the second type of pixels comprises:
determining a color mode of the image display area; wherein the color mode comprises a black-and-white mode and a color mode;
and modifying the W sub-pixel brightness value of the second type of pixel according to the color mode of the image display area.
6. The method of claim 5, wherein modifying the W sub-pixel luminance values of the second type of pixel according to the color pattern of the image display region comprises:
dividing the image display area into a plurality of sub-image display areas; wherein the color modes of different sub-image display areas in the plurality of sub-image display areas are different;
and modifying the W sub-pixel brightness value of the second type of pixel in each sub-image display area according to the color mode of each sub-image display area.
7. A display device of a display panel, the display panel comprising a plurality of pixels, each of the plurality of pixels comprising an R sub-pixel, a G sub-pixel, a B sub-pixel, and a W sub-pixel;
the pixels comprise first type pixels and second type pixels; the first type of pixels are pixels in a character display area in a picture to be displayed, and the second type of pixels are pixels in an image display area in the picture to be displayed;
the device comprises:
the determining module is used for determining the initial brightness value of each pixel in the picture to be displayed; wherein the initial luminance value of the pixel comprises an R sub-pixel luminance value, a G sub-pixel luminance value and a B sub-pixel luminance value; for each pixel, determining a W sub-pixel brightness value of the pixel according to an R sub-pixel brightness value, a G sub-pixel brightness value and a B sub-pixel brightness value of the pixel;
a modifying module, configured to modify a W sub-pixel luminance value of the first class pixel to obtain a final luminance value of the first class pixel, where the modified W sub-pixel luminance value of the first class pixel is smaller than the W sub-pixel luminance value before modification, and the final luminance value of the first class pixel includes an R sub-pixel luminance value, a G sub-pixel luminance value, a B sub-pixel luminance value, and a modified W sub-pixel luminance value of the first class pixel; modifying the W sub-pixel brightness value of the second type of pixel to obtain a final brightness value of the second type of pixel, wherein the final brightness value of the second type of pixel comprises an R sub-pixel brightness value, a G sub-pixel brightness value, a B sub-pixel brightness value and the modified W sub-pixel brightness value of the second type of pixel;
the driving module is used for driving a pixel unit corresponding to the first type of pixel in a display screen to shine by adopting a driving voltage corresponding to the final brightness value of the first type of pixel; driving a pixel unit corresponding to the second type of pixels in the display screen to shine by adopting the driving voltage corresponding to the final brightness value of the second type of pixels;
wherein, when modifying the luminance value of the W sub-pixel of the first type of pixel, the modifying module is specifically configured to:
determining character characteristics of the character display area; wherein the character characteristics comprise at least one of font type, font size and font color;
determining a first sub-adjustment coefficient X corresponding to the font type of the character display area according to the corresponding relation between the font type and the first sub-adjustment coefficient, wherein 0< X < 1;
determining a second sub-adjustment coefficient Y corresponding to the font color of the character display area according to the corresponding relation between the font color and the second sub-adjustment coefficient, wherein 0< Y < 1;
determining a third sub-adjustment coefficient Z corresponding to the font size of the character display area according to the corresponding relation between the font size and the third sub-adjustment coefficient, wherein 0< Z < 1;
performing weighted fusion on the first sub-adjustment coefficient X, the second sub-adjustment coefficient Y and the third sub-adjustment coefficient Z to obtain a first brightness adjustment coefficient (aX + bY + cZ); wherein a, b and c are preset weight coefficients, and 0< (aX + bY + cZ) < 1;
and multiplying the W sub-pixel brightness value in the initial brightness value of the first-class pixel bY the first brightness adjusting coefficient (aX + bY + cZ) to obtain the modified W sub-pixel brightness value of the first-class pixel.
8. A display device of a display panel, comprising:
at least one processor, and
a memory communicatively coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor to perform the method of any one of claims 1-6 by executing the instructions stored by the memory.
9. A computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-6.
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