CN116645904A

CN116645904A - Driving voltage adjusting method, device and equipment of display panel

Info

Publication number: CN116645904A
Application number: CN202310629522.7A
Authority: CN
Inventors: 胡凤章
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-08-25

Abstract

The application discloses a driving voltage adjusting method, device and equipment of a display panel. The driving voltage adjusting method of the display panel comprises the following steps: determining the color type of an image picture to be displayed; according to the color types of the image frames, adjusting the default driving voltage of the display panel, wherein the default driving voltages corresponding to the image frames with at least two different color types are different. According to the embodiment of the application, when the image picture does not contain all colors, the default driving voltage can be correspondingly adjusted according to the color type corresponding to the image picture, so that the display power consumption can be reduced by reducing the driving voltage on the premise that the brightness of the luminous sub-pixel to be luminous is not influenced and the picture can be displayed normally.

Description

Driving voltage adjusting method, device and equipment of display panel

Technical Field

The present application relates to the field of display technologies, and in particular, to a method, an apparatus, and a device for adjusting a driving voltage of a display panel.

Background

With the continuous development of display panel technology, OLED (organic light-emitting diode) devices and other light emitting devices have been gradually applied to various display panel products such as mobile phones, tablets, notebooks, and the like.

However, the display panel has a problem of high power consumption.

Disclosure of Invention

The embodiment of the application provides a driving voltage adjusting method, device and equipment of a display panel, which can solve the technical problem of higher power consumption of screen display when the default driving voltage is larger.

In a first aspect, an embodiment of the present application provides a method for adjusting a driving voltage of a display panel, including:

determining the color type of an image picture to be displayed;

according to the color types of the image frames, adjusting the default driving voltage of the display panel, wherein the default driving voltages corresponding to the image frames with at least two different color types are different.

In some embodiments, the image frames of different color types correspond to different color types.

In some embodiments, the default driving voltage corresponding to when the image frame is a pure red image frame, or a pure blue image frame, or a red-blue mixed green missing image frame is less than the default driving voltage corresponding to when the image frame includes green.

In some embodiments, the default driving voltage corresponding to the image frame being a pure red image frame is greater than or equal to the default driving voltage corresponding to the image frame being a pure blue image frame.

In some embodiments, the power supply of the display panel outputs a default driving voltage to the driving chip of the display panel.

In some embodiments, determining the color type of the image frame to be displayed includes:

acquiring the light emitting proportion of the light emitting sub-pixels of each color in a single image picture;

the color type of the image frame is determined according to the light emitting proportion.

In some embodiments, the light emitting sub-pixels include a red light emitting sub-pixel, a green light emitting sub-pixel, and a blue light emitting sub-pixel.

In some embodiments, determining the color type of the image frame from the light emission ratio includes:

determining whether the image picture is a first image picture or not according to the light-emitting proportion; the first image picture is an image picture lacking at least one color;

according to the color type of the image picture, adjusting the default driving voltage of the display panel comprises the following steps:

and in the case that the single image picture is the first image picture, adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed.

In some embodiments, obtaining the light emission ratios of the light emitting sub-pixels of each color in a single image frame includes:

acquiring brightness data of luminous sub-pixels of each color in a single image picture;

Respectively counting the corresponding luminous quantity of the luminous sub-pixels with different colors according to the brightness data;

and calculating the light emitting proportion of the light emitting sub-pixels of each color according to the light emitting quantity respectively corresponding to the light emitting sub-pixels of each color.

In some embodiments, obtaining luminance data for each color of a light emitting sub-pixel in a single image frame includes:

acquiring display data of each light-emitting unit in a single image picture; the light emitting unit comprises at least three light emitting sub-pixels with different colors;

determining brightness data of the light emitting sub-pixels of the respective colors according to the display data of each light emitting unit;

respectively counting the corresponding luminous quantity of the luminous sub-pixels with different colors according to the brightness data, comprising:

in a single image picture, according to the brightness data of the light-emitting sub-pixels of each color in each light-emitting unit, the light-emitting quantity of the light-emitting sub-pixels of different colors is accumulated and counted to obtain the light-emitting quantity of the light-emitting sub-pixels of each color in the single image picture.

In some embodiments, adjusting the default driving voltage of the display panel according to the color type of the image frame includes:

and under the condition that the single image picture is the first image picture, adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed of the first image picture, wherein the first image picture is the image picture missing at least one color.

In some embodiments, in a case where the single image frame is the first image frame, adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed of the first image frame includes:

determining a first driving voltage of a display panel corresponding to the first image picture according to the missing color of the first image picture and a first corresponding relation, wherein the first corresponding relation is the corresponding relation between the missing color and the driving voltage;

or determining a first driving voltage of the display panel corresponding to the first image picture according to the color to be displayed of the first image picture and a second corresponding relation, wherein the second corresponding relation is the corresponding relation between the color to be displayed and the driving voltage;

the default driving voltage of the display panel is adjusted to the first driving voltage.

In some embodiments, determining a first driving voltage of a display panel corresponding to a first image frame according to a missing color of the first image frame and a first correspondence includes:

determining second driving voltages corresponding to each missing color according to the first corresponding relation when the missing colors of the first image picture comprise at least two kinds;

the first driving voltage is determined according to a minimum value of the plurality of second driving voltages.

In some embodiments, determining a first driving voltage of a display panel corresponding to the first image frame according to a color to be displayed of the first image frame and the second correspondence relation includes:

determining third driving voltages respectively corresponding to each color to be displayed according to the second corresponding relation under the condition that the colors to be displayed of the first image picture comprise at least two colors;

the first driving voltage is determined according to a maximum value of the plurality of third driving voltages.

determining a corresponding first voltage coefficient according to the current brightness level;

Obtaining a fifth driving voltage according to the first voltage coefficient and the first driving voltage;

the default driving voltage of the display panel is adjusted to a fifth driving voltage.

In a second aspect, an embodiment of the present application provides a driving voltage adjustment device for a display panel, including:

a type determining module for determining a color type of an image frame to be displayed;

the voltage adjusting module is used for adjusting the default driving voltage of the display panel according to the color types of the image frames, and the default driving voltages corresponding to the image frames with at least two different color types are different.

In a third aspect, an embodiment of the present application provides a driving voltage adjustment apparatus of a display panel, the driving voltage adjustment apparatus of the display panel including: a processor and a memory storing computer program instructions;

the processor executes the computer program instructions to implement the driving voltage adjustment method of the display panel in the above embodiment.

In a fourth aspect, an embodiment of the present application provides a computer storage medium having stored thereon computer program instructions which, when executed by a processor, implement the driving voltage adjustment method of the display panel in the above embodiment.

Compared with the prior art, the driving voltage adjusting method, the driving voltage adjusting device and the driving voltage adjusting equipment for the display panel can determine the corresponding color type of the image frame according to the image data of the image frame to be displayed. The default driving voltages corresponding to the image frames of at least two different color types are different. According to the corresponding color type of the image picture, the default driving voltage provided for the driving chip can be adjusted accordingly. Taking the example that the display panel includes three light emitting sub-pixels of red, green and blue, in order to enable the light emitting sub-pixels of three colors to emit light normally, the default driving voltage needs to be set to the minimum driving voltage required to satisfy the light emitting sub-pixels of three colors to emit light normally. When the color type of the image picture does not include all colors, the default driving voltage can be correspondingly reduced, so that the display power consumption is reduced by reducing the driving voltage on the premise that the luminous sub-pixels for luminous can still normally emit light.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a flowchart illustrating a driving voltage adjustment method of a display panel according to an embodiment of the application;

fig. 2 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the application;

fig. 3 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the application;

FIG. 4 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

FIG. 5 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

FIG. 6 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

FIG. 7 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

FIG. 8 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

FIG. 9 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

fig. 10 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

FIG. 11 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

Fig. 12 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

FIG. 13 is a flowchart illustrating a driving voltage adjustment method of a display panel according to another embodiment of the present application;

fig. 14 is a schematic structural diagram of a driving voltage adjusting device of a display panel according to an embodiment of the application;

fig. 15 is a schematic diagram of a driving voltage adjusting apparatus for a display panel according to an embodiment of the application.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the application only and not limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.

The display panel comprises light-emitting sub-pixels with different light-emitting colors, a power supply of the display panel can provide a default driving voltage AVDD for the driving chip, and the driving chip can generate various voltages required in a display driving process by using the default driving voltage and other related voltages after receiving the default driving voltage. For example, the voltage generated by the driving chip using the default driving voltage may include, but is not limited to, one or more of a high active signal VGH of the scan signal, two reference levels VGSP, VGMP of the data signal, an initialization voltage Vref, a digital voltage signal OVDD, and the like.

In general, in order to ensure the overall display effect of the display panel, it is necessary to increase the default driving voltage as much as possible, so that the related voltage signals generated by the driving chip using the default driving voltage are enough to satisfy the minimum requirements of various voltage signals in the display driving process. However, providing a larger default driving voltage for a long time will result in higher power consumption for the screen display of the display panel.

In order to solve the technical problems, embodiments of the present application provide a method, an apparatus, and a device for adjusting a driving voltage of a display panel. The following first describes a driving voltage adjustment method of a display panel according to an embodiment of the present application.

Fig. 1 is a flowchart illustrating a driving voltage adjustment method of a display panel according to an embodiment of the application. The driving voltage adjusting method of the display panel comprises the following steps:

s110, determining the color type of an image picture to be displayed;

s120, adjusting the default driving voltage of the display panel according to the color types of the image frames, wherein the default driving voltages corresponding to the image frames with at least two different color types are different.

The driving voltage adjusting method of the display panel provided by the embodiment of the application can be applied to a driving voltage adjusting device of the display panel, and the device can adjust the default driving voltage according to the color type of an image picture to be displayed, so that the default driving voltage AVDD is reduced and the display power consumption is saved on the premise that the normal light emission of the light emitting sub-pixels of the display panel corresponding to the light emitting sub-pixels of the display panel without color deficiency (namely needing to emit light) is not influenced. The display panel may be a PC, a television, a smart terminal or a tablet computer, etc. The specific form of the display panel is not limited in this embodiment. The sub-pixels of the display panel correspond to the sub-pixels of the display screen.

In this embodiment, the display panel may determine, according to image data of an image frame to be displayed, a color type corresponding to the image frame. The default driving voltages corresponding to the image frames of at least two different color types are different. According to the corresponding color type of the image picture, the default driving voltage provided for the driving chip can be adjusted accordingly. Taking the example that the display panel includes three light emitting sub-pixels of red, green and blue, in order to enable the light emitting sub-pixels of three colors to emit light normally, the default driving voltage needs to be set to the minimum driving voltage required to satisfy the light emitting sub-pixels of three colors to emit light normally. When the color type of the image picture does not include all colors, the default driving voltage can be correspondingly reduced, so that the display power consumption can be reduced by reducing the driving voltage on the premise that the luminous sub-pixels needing to emit light can still emit light normally.

In S110, the display panel may determine a color type corresponding to the image frame to be displayed according to the image data of the image frame to be displayed.

The display panel generally includes light emitting sub-pixels with different light emitting colors, for example, three light emitting sub-pixels including red, green and blue, four light emitting sub-pixels including red, green, blue and white, or four light emitting sub-pixels including red, green, blue and yellow, and the color types of the light emitting sub-pixels are not limited herein.

According to the image data of the image to be displayed, the display panel can determine the light emitting colors corresponding to the part of the light emitting sub-pixels which need to emit light in the image to be displayed, and determine the color type of the image according to the light emitting colors of the light emitting sub-pixels. For example, according to the brightness data of the image frame to be displayed, the display panel determines that only red light emitting sub-pixels in the image frame need to emit light, the light emitting sub-pixels of the other light emitting colors do not need to emit light, or the light emitting sub-pixels of the other light emitting colors are all 0 gray scale, and then the display panel can determine that the color type of the image frame is a pure red image frame. Likewise, the color type of the image frame may also be a pure blue image frame, a pure green image frame, an image frame in which two colors are mixed, an image frame in which three colors are mixed, or the like.

As an alternative embodiment, the types of colors corresponding to the image frames of the different color types are different.

For example, when the color type of the image frame is pure red, the corresponding color type of the image frame is red; when the color type of the image picture is red-blue mixture, the corresponding color types of the image picture are red and blue. That is, when two image frames correspond to different color types, the colors included in the two image frames are not the same.

Referring to fig. 2, as an alternative embodiment, S110 may include:

s210, acquiring the light emitting proportion of the light emitting sub-pixels of each color in a single image picture;

s220, determining the color type of the image frame according to the light-emitting proportion;

in this embodiment, the device may count the light emitting sub-pixels in the light emitting state in the image to be displayed according to the colors, so as to obtain the light emitting ratios of the light emitting sub-pixels in the respective colors, and determine the color types of the image frame according to the light emitting ratios.

In S210, the display panel may determine a light emission ratio of the light emitting sub-pixels of each color in the single image frame according to image data of the image frame to be displayed.

As an alternative embodiment, the light emission ratio may be determined by determining the light emission luminance of each light emission sub-pixel according to the image data, and determining whether each light emission sub-pixel is in a light emission state according to the light emission luminance and the size of the light emission threshold. For example, in a single image frame, if the light emission luminance of a certain light emitting sub-pixel is higher than the light emission threshold, it may be determined that the light emitting sub-pixel is in a light emitting state in the image frame. And otherwise, determining that the luminous sub-pixel is in a non-luminous state.

After the light emitting state of each light emitting sub-pixel is determined according to the image data, the light emitting sub-pixels in the light emitting state can be counted according to different colors, so as to obtain the light emitting quantity of the light emitting sub-pixels in each color in the image picture. According to the luminous quantity of the luminous sub-pixels of each color and the total quantity of the luminous sub-pixels in the luminous state, the luminous proportion of the luminous sub-pixels of each color can be calculated.

Referring to fig. 3, as an alternative embodiment, S210 may include:

s310, acquiring brightness data of luminous sub-pixels of each color in a single image picture;

s320, respectively counting the luminous quantity corresponding to the luminous sub-pixels with different colors according to the brightness data;

s330, calculating the light emitting proportion of the light emitting sub-pixels of each color according to the light emitting quantity corresponding to the light emitting sub-pixels of each color.

In this embodiment, the display panel may determine luminance data of each light emitting sub-pixel according to image data of an image frame, and determine whether each light emitting sub-pixel is in a light emitting state in the image frame according to whether the luminance data satisfies a light emitting threshold. After counting the number of the light emitting sub-pixels of each color in the image picture, the light emitting proportion of the light emitting sub-pixels of each color can be calculated according to the number of the light emitting sub-pixels of each color and the total number of the light emitting sub-pixels.

In S310, the display panel needs to acquire image data of an image frame before displaying the image of the single image frame, and can determine luminance data of light emitting sub-pixels of each color according to the image data.

In S320, in the single image frame, the luminance data of the light emitting sub-pixels of each color is traversed, and the luminance data may be divided according to the color of the light emitting sub-pixels, so as to obtain the number of luminance data reaching the light emitting threshold under each color, and further determine the light emitting number corresponding to the light emitting sub-pixels of each color.

Taking a red light emitting sub-pixel as an example, in a single image frame, the number of red light emitting sub-pixels whose luminance data reaches a light emission threshold, that is, the number of light emission of the red light emitting sub-pixels in the image frame, can be determined from the luminance data of each red light emitting sub-pixel. Likewise, the number of light emissions of the green light-emitting sub-pixel and the blue light-emitting sub-pixel in the image frame may also be determined, respectively.

In an alternative embodiment, a voltage drop compensation circuit (IRDrop compensation circuit) is typically disposed in the driving chip of the display panel, where the IRDrop compensation circuit can obtain luminance data of each light emitting sub-pixel and perform corresponding voltage compensation. In the above embodiment, the IRDrop compensation circuit may obtain the luminance data of the light emitting sub-pixels of each color, and count the light emitting numbers corresponding to the light emitting sub-pixels of different colors respectively.

It should be noted that, the IRDrop compensation circuit can count and count only the light emission numbers corresponding to the light emission sub-pixels with different colors, and send the light emission numbers to the driving chip, and the driving chip can calculate the light emission proportion of the light emission sub-pixels with different colors according to the light emission numbers corresponding to the light emission sub-pixels with different colors and the total light emission numbers after receiving the light emission numbers corresponding to the light emission sub-pixels with different colors.

In an exemplary embodiment, a plurality of IRDrop compensation circuits are disposed in a display panel, a display area of the display panel includes a plurality of sub-areas, each IRDrop compensation circuit is capable of processing luminance data to be displayed in a sub-area corresponding to the IRDrop compensation circuit to obtain luminance data of light emitting sub-pixels of each color in the sub-area, and counting the number of light emitting sub-pixels of each color in the sub-area according to a light emitting threshold. After the driving chip obtains the light-emitting quantity counted by each IRdrop compensation circuit and corresponding to the light-emitting sub-pixels of each color, the light-emitting quantity counted by the plurality of IRdrop compensation circuits can be added for the light-emitting sub-pixels of each color, so that the light-emitting quantity of the light-emitting sub-pixels of each color in the whole display area of the display panel is obtained.

In S330, after determining the respective numbers of light emission of the light emitting sub-pixels of the respective colors in the single image frame, the light emission ratios of the light emitting sub-pixels of the respective colors may be determined according to the numbers of light emission.

The light emission ratio of the light emitting sub-pixels of each color can be calculated from the light emission number of the light emitting sub-pixels of each color and the light emission number of all the light emitting sub-pixels. For example, if the number of light emission sub-pixels of three colors of red, green and blue in a single image frame is 1000, 0, and 0, the light emission ratios of the light emission sub-pixels of three colors of red, green and blue are 100%, 0, and 0%, respectively. If the number of the light-emitting sub-pixels of the three colors of red, green and blue in a single image picture is 1000, 0 and 500, the light-emitting ratios of the light-emitting sub-pixels of the three colors of red, green and blue are 66.7%, 0% and 33.3%, respectively.

Referring to fig. 4, as an alternative embodiment, S310 may include:

s410, acquiring display data of each light-emitting unit in a single image picture; the light emitting unit comprises at least three light emitting sub-pixels with different colors;

s420, determining brightness data of the light-emitting sub-pixels of each color according to the display data of each light-emitting unit;

The step S320 may include:

s430, in the single image picture, according to the brightness data of the light emitting sub-pixels of each color in each light emitting unit, accumulating and counting the light emitting quantity of the light emitting sub-pixels of different colors to obtain the light emitting quantity of the light emitting sub-pixels of each color in the single image picture.

In the present embodiment, the display panel may acquire display data of each light emitting unit in units of light emitting units from image data. The display data of each light emitting unit includes luminance data of light emitting sub-pixels of respective colors in the light emitting unit. The number of light emission of each color of light emission sub-pixel can be obtained by performing accumulated statistics on the luminance data of the light emission sub-pixels of different colors in each light emission unit.

In S410, the image data of the single image frame may be composed of the display data of the respective light emitting units.

The display panel may include a plurality of light emitting units each including a light emitting subpixel of each color of the display panel. When the display panel comprises three light-emitting sub-pixels with red, green and blue colors, each light-emitting unit comprises three light-emitting sub-pixels with different colors, and at least one light-emitting sub-pixel with each color is arranged. When the display panel comprises light-emitting sub-pixels with four colors of red, green, blue and white or red, green, blue and yellow, each light-emitting unit comprises the light-emitting sub-pixels with four different colors, and at least one light-emitting sub-pixel with each color is arranged. In addition, the same color light emitting sub-pixels in the light emitting unit may be provided in two or more. For example, the light emitting unit may include RGBG light emitting sub-pixels, that is, red and blue light emitting sub-pixels, and green light emitting sub-pixels. The light emitting unit may be a pixel repeating unit.

In S420, after the display data of a certain light emitting unit is determined according to the image data of the image frame, the luminance data of the light emitting sub-pixels of each color may be determined according to the data of different positions in the display data. For example, the display data of the light emitting unit may be a single data frame, and the luminance data corresponding to the light emitting sub-pixels of each color are respectively located at different positions of the single data frame, and the luminance data corresponding to the light emitting sub-pixels of each color can be obtained by reading the data frame.

In S430, luminance data of the light emitting sub-pixels of each color in the respective light emitting units may be determined from image data of the single image frame, and the total light emitting number of the light emitting sub-pixels of each color is accumulated and counted according to the luminance data. The total light emission quantity is the light emission quantity of the light emitting sub-pixels with corresponding colors in the image frame.

Taking a certain light-emitting unit as an example, in the luminance data of the three colors of red, green and blue corresponding to the light-emitting unit, the luminance data of the red light-emitting sub-pixel is greater than the light-emitting threshold value, and the luminance data of the blue light-emitting sub-pixel and the green light-emitting sub-pixel is less than the light-emitting threshold value. That is, the number of light emission of the red light emitting sub-pixel in the light emitting unit is 1, and the number of light emission of the blue light emitting sub-pixel and the green light emitting sub-pixel is 0. Before the accumulation statistics is carried out on the light-emitting unit, the total light-emitting quantity of the light-emitting sub-pixels with the three colors of red, green and blue is respectively 1000, 0 and 0, and after the accumulation statistics is carried out according to the brightness data of the light-emitting sub-pixels with each color in the light-emitting unit, the total light-emitting quantity of the light-emitting sub-pixels with the three colors of red, green and blue is respectively 1001, 0 and 0.

In S220, after determining the light emission ratios of the light emitting sub-pixels of the respective colors in the image frame to be displayed, the color type of the image frame may be determined according to the light emission ratios.

The color type of the image frame may be a solid color image frame, for example, a solid red image frame, a solid blue image frame, a solid green image frame, or the like, or may be a two-color mixed image frame, for example, a red-blue mixed green missing image frame, a red-green mixed blue missing image frame, a blue-green mixed red missing image frame, or the like, or may be a multi-color mixed image frame, which is not limited herein.

The manner of determining the color type of the image frame according to the light emission ratio may be to determine whether the light emission ratio of the light emission sub-pixels having one color is higher than a coloring ratio threshold according to the light emission ratio of the light emission sub-pixels having each color. For example, when the light emission ratio of the green light emission sub-pixel is higher than the coloring ratio threshold value, it may be determined that the color category of the image frame includes at least green. By comparing the light emitting sub-pixels of each color, the kind of color included in the image frame can be determined to determine the color type of the image frame. For example, when the light emitting ratios of the light emitting sub-pixels of the three colors of red, green and blue in the image frame are respectively 100%, 0% and 0%, it can be determined that the color type included in the image frame is red, and the color type of the image frame is a pure red image frame; when the light emitting proportion of the light emitting sub-pixels of the three colors of red, green and blue is respectively 50%, 50% and 0%, the color types of the image picture including red and blue can be determined, and the color type of the image picture is an image picture with red, blue and green mixed missing.

In another embodiment, the manner of determining the color type of the image frame according to the light emitting proportion of the light emitting sub-pixels of each color may further be to determine whether the light emitting proportion of the light emitting sub-pixels of one color is lower than a color deficiency proportion threshold according to the light emitting proportion of the light emitting sub-pixels of each color. For example, when the light emission ratio of the green light emitting sub-pixel is lower than the color deficiency ratio threshold, it may be determined that the image frame is green deficient. By comparing the light emitting sub-pixels of each color, the missing color of the image frame can be determined. For example, when the image picture includes light emitting sub-pixels of red, green, and blue, and the image picture lacks green, it may be determined that the color type of the image picture is an image picture in which red-blue mixed green is absent; when the image frame lacks blue and green, the color type of the image frame may be determined to be a pure red image frame. For example, when the light emission ratios of the light emitting sub-pixels of three colors of red, green and blue are 100%, 0% and 0%, respectively, the image is an image in which green and blue are absent.

As an alternative embodiment, the light emitting sub-pixels of the display panel may include red light emitting sub-pixels, green light emitting sub-pixels, blue light emitting sub-pixels.

The default driving voltage corresponding to the image picture which is a pure red image picture, or a pure blue image picture, or an image picture with red-blue mixed green missing is smaller than the default driving voltage corresponding to the image picture which comprises green. That is, when the image frame is a pure green image frame or a mixed image frame including green, the default driving voltage supplied to the driving chip of the display panel is high. When the image frame is a pure red image frame, a pure blue image frame, or an image frame with red, blue and green mixed missing, the default driving voltage provided to the driving chip of the display panel is lower. Therefore, when the color type of the image frame to be displayed is changed from an image frame containing green to an image frame not containing green, the default driving voltage supplied to the driving chip can be correspondingly reduced to reduce the power consumption generated by maintaining the default driving voltage.

As an alternative embodiment, S220 may include:

s510, determining whether the image picture is a first image picture according to the light emitting proportion; the first image picture is an image picture lacking at least one color;

in this embodiment, after determining the light emission ratios of the light emitting sub-pixels of the respective colors in the image frame to be displayed, it may be determined whether the image frame is the first image frame according to the light emission ratios. The first image may be an image that lacks at least one color. For example, the display panel includes three light emitting sub-pixels of red, green and blue, and the first image may be an image that lacks green, an image that lacks blue, or an image that lacks red.

The first image may be a single-color image or a mixed image of a plurality of colors other than the missing color, for example, when the first image is missing a green image, the first image may be a pure red image, a pure blue image, or a mixed image of red and blue.

The method for determining whether the image frame is the first image frame according to the light emitting proportion may be to determine whether the light emitting proportion of the light emitting sub-pixels with one color is lower than a proportion threshold according to the light emitting proportion of the light emitting sub-pixels with each color. For example, when the light emission ratio of the green light emitting sub-pixel is lower than the ratio threshold value of 1%, it may be determined that the image frame is the first image frame lacking green. For example, when the light emission ratios of the light emitting sub-pixels of the three colors of red, green and blue are 100%, 0% and 0%, respectively, the image frame is the first image frame lacking green and blue, that is, the pure red image frame.

As an alternative embodiment, S120 may include:

s520, when the single image frame is the first image frame, the default driving voltage of the display panel is adjusted according to the missing color and/or the color to be displayed of the first image frame, and the first image frame is the image frame missing at least one color.

In this embodiment, the display panel may adjust the default driving voltage of the light emitting sub-pixel according to the missing color of the first image frame and/or the color to be displayed. Taking the example that the display panel includes three light emitting sub-pixels of red, green and blue, in order to enable the light emitting sub-pixels of three colors to emit light normally, the default driving voltage needs to be set to the minimum driving voltage required to satisfy the light emitting sub-pixels of three colors to emit light normally. And when at least one color is missing from the first image frame, the default driving voltage may be set to a minimum driving voltage required for normal light emission of the remaining two colors or the remaining one color of the light emitting sub-pixels. That is, when a certain color is absent in the first image frame, the default driving voltage can be correspondingly reduced, so that the light-emitting sub-pixels for emitting light can still emit light normally, and on the premise that the display effect meets the requirement, the display power consumption is reduced by reducing the driving voltage.

In S520, when it is determined that the single image frame to be displayed is the first image frame, the display panel may adjust the default driving voltage of the light emitting sub-pixel according to the missing color and/or the color to be displayed in the first image frame, so that the adjusted driving voltage can meet the driving voltage requirement of the light emitting sub-pixel of the color to be displayed in the first image frame.

Taking the light emitting sub-pixels with three colors of red, green and blue in the display panel as an example, the power supply of the display panel can provide a default driving voltage AVDD for the driving chip, and the driving chip can generate other voltages required in the display driving process according to the default driving voltage. The voltage generated by the driving chip using the default driving voltage may include, but is not limited to, one or more of a high active signal VGH of the scan signal, two reference levels VGSP (lower limit voltage value) of the data signal, VGMP (upper limit voltage value), an initialization voltage Vref, a digital voltage signal OVDD, and the like.

Taking the example of a display panel comprising three colors of red, green and blue light emitting sub-pixels. In general, the related voltage signals required for the light emitting sub-pixels with different light emitting colors to emit light in the normal light emitting brightness interval may be the same or different.

The same voltage signal received by the light emitting sub-pixels of different light emitting colors may be a high level signal of the scan signal. For example, the pixel circuits of the light emitting sub-pixels with different light emitting colors each include a data writing transistor, and the high level signals of the scan signals supplied by the driving chips for the data writing transistors of the light emitting sub-pixels with different colors are generally uniform.

The different voltage signals received by the light emitting sub-pixels of different light emitting colors may be the initialization signal Vref of the light emitting element anode or the two reference levels VGSP, VGMP of the data signal. For example, the voltage levels required to initialize the light emitting element anodes of the light emitting sub-pixels of different colors may not be the same; the voltage intervals of the data signals corresponding to the light emitting sub-pixels of different colors may also be different, so that the reference levels VGSP, VGMP corresponding to the light emitting sub-pixels of different colors are not completely identical.

Since the driving chip needs to consider the normal light emission requirements of the light emitting sub-pixels of each color when generating the initialization signal, the reference level of the data signal, and other relevant voltages required in the display driving process according to the default driving voltage. Therefore, the minimum value of the default driving voltage should be at least capable of satisfying the data signal voltage interval requirement of the light emitting sub-pixels of each color and the voltage requirement of the initialization signal. That is, when the light emitting sub-pixels of different colors correspond to different data signal reference levels VGSP and VGMP, respectively, the minimum value of the default driving voltage is affected by the maximum VGMP. For example, when the data signal reference level VGMPg corresponding to the green light emitting subpixel is greater than the data signal reference level VGMPr corresponding to the red light emitting subpixel and the data signal reference level VGMPb corresponding to the blue light emitting subpixel, the minimum value of the default driving voltage depends on the green VGMPg. Similarly, when the voltage levels of the initializing signals required for the light emitting element anodes of the light emitting sub-pixels of different colors are not uniform, the minimum value of the default driving voltage also depends on the maximum voltage among the plurality of initializing signals.

As can be seen from the above analysis, when the light emitting sub-pixels of each color emit light in the image frame to be displayed, the default driving voltage needs to meet the normal light emitting requirements of the light emitting sub-pixels of all colors. And when the image picture to be displayed has missing colors or the colors to be displayed in the image picture are not all colors, the default driving voltage only needs to meet the normal light emitting requirement of the light emitting sub-pixels with partial colors. Therefore, when the display panel displays the first image frame, the required default driving voltage is lower than the default driving voltage of the normal image frame (image frame without missing color).

Taking the example that the display panel comprises the light-emitting sub-pixels with three colors of red, green and blue, when the image picture displayed by the display panel is the first image picture, as the first image picture is the image picture with at least one color missing, the default driving voltage only needs to meet the normal light-emitting requirement of the light-emitting sub-pixels with two colors or the normal light-emitting requirement of the light-emitting sub-pixels with one color when the display panel displays the first image picture. According to the missing color and/or the color to be displayed in the first image frame, the voltage drop of the default driving voltage can be determined when the default driving voltage meets the normal light emitting requirement of the light emitting sub-pixels with the partial color, compared with the voltage drop of the default driving voltage under the normal image frame.

According to the missing color in the first image frame, the default driving voltage provided to the driving chip of the display panel can be correspondingly reduced, and the light-emitting brightness of each light-emitting sub-pixel in the first image frame is not affected. Since the default driving voltage provided by the display panel under the first image frame is lower than the default driving voltage provided under the normal image frame (image frame without missing color), the display effect is not affected, and when the first image frame is displayed, the reduction of the display power consumption can be achieved by reducing the default driving voltage. However, the default driving voltage cannot be continuously adjusted down, otherwise, the display effect requirement cannot be met, or other compensation functions inside the power supply source are triggered, so that the power consumption is increased.

Referring to fig. 5 to 7, as an alternative embodiment, S520 may include:

s610, determining a first driving voltage of a display panel corresponding to the first image according to the missing color of the first image and the first correspondence; the first corresponding relation is the corresponding relation between the missing color and the driving voltage;

or, S620, determining a first driving voltage of the display panel corresponding to the first image according to the color to be displayed and a second correspondence of the color to be displayed and the driving voltage;

S630, adjusting the default driving voltage of the display panel to the first driving voltage.

In this embodiment, the display panel may determine the first driving voltage corresponding to the first image frame according to the missing color in the first image frame, and adjust the default driving voltage to the first driving voltage. The display panel can also determine a first driving voltage corresponding to the first image frame according to the color to be displayed of the first image frame. The driving chip can meet the normal light-emitting requirement of the light-emitting sub-pixels without the missing color under the first driving voltage, and the light-emitting brightness of the light-emitting sub-pixels without the missing color is not affected. After the default driving voltage is adjusted to the first driving voltage, the display effect of the first image picture is not affected, and the display power consumption can be reduced by reducing the voltage amplitude of the driving voltage.

In S610, when the first driving voltage is determined, the first driving voltage may be determined according to the missing color of the first image frame.

The first driving voltage may be determined according to the missing color of the first image frame, and after determining the missing color in the first image frame, the corresponding first driving voltage may be determined according to the missing color and the first correspondence. The first corresponding relation is the corresponding relation between the missing color and the driving voltage. For example, when the missing color is green, the corresponding first driving voltage is Vg; when the missing color is red, the corresponding first driving voltage is Vr; when the missing color is blue, the corresponding first driving voltage is Vb.

Taking the light emitting elements of three colors of red, green and blue as an example, when the first image frame is an image frame lacking green, the image frame may be displayed by light emission only by the red light emitting sub-pixel and the blue light emitting sub-pixel. When the default driving voltage provided by the display panel can meet the normal light-emitting requirement of the red light-emitting sub-pixel and the blue light-emitting sub-pixel, the red Lan Faguang sub-pixel can be ensured to emit light normally so as to display the first image frame normally. That is, when the first image frame is green-missing, the first driving voltage may be supplied to satisfy the following formula:

Vg≥max{V1、V3}；

wherein Vg is the first driving voltage provided to the display panel when the first image frame lacks green, V1 is the minimum driving voltage required by the driving chip when the display panel normally displays the pure red image frame, and V3 is the minimum driving voltage required by the driving chip when the display panel normally displays the pure blue image frame.

Likewise, when the first image frame lacks red, the display panel may determine that the first driving voltage Vr is:

Vr≥max{V2、V3}；

wherein V2 is the minimum driving voltage required by the driving chip when the display panel normally displays a pure green image.

When the first image frame lacks blue, the display panel may determine that the first driving voltage Vb is:

Vb≥max{V1、V2}。

Since the minimum driving voltages required for the light emitting sub-pixels of different colors at the time of normal light emission may be the same or may be different. Therefore, in the actual step-down process of the default driving voltage, there may be a case where the default driving voltage does not change. For example, when V1, V2, V3 are different from each other, in order to achieve the light emission luminance requirement of a normal image (image without missing color), the default driving voltage Vd should be not less than the maximum value among V1, V2, V3. Assuming that the magnitude relation of V1, V2, and V3 is V2> V1> V3, the minimum value in the voltage range of the default driving voltage is V2 in the normal image frame.

According to the determination method of the first driving voltage, when the first image picture lacks red, the minimum value of the first driving voltage Vr is V2; when the first image frame lacks blue, the minimum value of the first driving voltage Vb is also V2. That is, when the first image frame includes green, the default driving voltage Vd cannot be reduced. That is, when the minimum driving voltage V2 required for the normal light emission of the green light emitting sub-pixel is the maximum value of V1, V2, and V3, the minimum value of the first driving voltage Vg is V1, the display power consumption can be reduced by reducing the driving voltage without affecting the normal light emission of the red Lan Faguang sub-pixel by reducing the default driving voltage AVDD to the first driving voltage Vg. For example, when the image frame is switched from a pure green image frame or an image frame including green to a pure red image frame or a pure blue image frame or an image frame where red and blue are mixed and green are absent, the default driving voltage AVDD is reduced from V2 to V1 or V3, so that reduction of display power consumption can be achieved by reducing the default driving voltage. However, when the missing color of the first image frame is red or blue, the default driving voltage AVDD cannot be reduced, and at this time, the display power consumption cannot be reduced by reducing the default driving voltage.

In S620, the first driving voltage may also be determined according to the color to be displayed of the first image frame. For example, in the brightness test process of the display panel, the default driving voltages may be adjusted under different colors to be displayed, and the first driving voltages corresponding to the different colors to be displayed may be determined without affecting the display effect of the first image frame. For example, when the display panel includes red, green and blue light emitting sub-pixels, it may be determined that the color to be displayed is pure red, pure green, pure blue, red-blue mixture, red-green mixture, and blue-green mixture, respectively, corresponding to the default driving voltages, and generate a second correspondence relationship between the color to be displayed and the default driving voltages.

In the actual display process, determining the image to be displayed as the first image according to the image data of the image to be displayed, determining the color to be displayed of the first image, reading the driving voltage corresponding to the color to be displayed according to the second corresponding relation, and taking the read driving voltage as the first driving voltage.

In S630, after determining the first driving voltage corresponding to the first image frame, the display panel may reduce the default driving voltage provided to the driving chip of the display panel to the first driving voltage to reduce the display power consumption of the display panel when displaying the image frame.

Referring to fig. 8 and 10, as an alternative embodiment, S610 may include:

s710, determining second driving voltages corresponding to each missing color according to the first corresponding relation when the missing colors of the first image frame comprise at least two types;

s720, determining the first driving voltage according to the minimum value of the plurality of second driving voltages.

In this embodiment, when at least two missing colors are included in the first image frame, the second driving voltages corresponding to each missing color may be determined according to the first correspondence, and the minimum value may be determined from the plurality of second driving voltages as the first driving voltage. It will be appreciated that for an undelayed color, either of the second drive voltages is capable of meeting the normal lighting requirements of the undelayed color. For example, when the first image frame lacks both the blue color and the green color, the second driving voltage corresponding to the missing blue color and the second driving voltage corresponding to the missing green color may be determined according to the first correspondence. The second driving voltage corresponding to the missing blue color can meet the normal light-emitting requirement of the red light-emitting sub-pixel, and the second driving voltage corresponding to the missing green color can also meet the normal light-emitting requirement of the red light-emitting sub-pixel, so that the minimum second driving voltage can be selected as the first driving voltage for reducing the display power consumption of the display panel.

In S710, when the missing colors of the first image frame include two colors, the second driving voltages respectively corresponding to each of the missing colors may be determined according to the first correspondence. Taking the display panel including three light-emitting sub-pixels of red, green and blue as an example, when the first image frame lacks green and blue, the second driving voltage Vg corresponding to the case of lacking green and the second driving voltage Vb corresponding to the case of lacking blue can be determined according to the first correspondence.

In S720, after determining the second driving voltages respectively corresponding to each of the missing colors, the first driving voltage may be determined from the minimum value of the plurality of second driving voltages. That is, when two or more colors are displayed, the second driving voltages corresponding to the respective missing colors may be determined, and the minimum value of the plurality of second driving voltages may be set as the first driving voltage.

After the first image frame lacks green and blue, and the second driving voltage Vg corresponding to the lack of green and the second driving voltage Vb corresponding to the lack of blue are determined, the second driving voltage Vg and the smaller value min { Vg, vb } of the second driving voltage Vb may be used as the first driving voltage.

When the display panel includes light emitting sub-pixels of three colors, if the first image is missing two colors, the first image is a solid-color image of a third color. When the display panel includes light-emitting sub-pixels of four or more colors, if two colors are missing from the first image frame, the first image frame may be a solid-color image frame or an image frame composed of at least two colors.

With continued reference to fig. 9 and 10, as an alternative embodiment, S620 may include:

s730, determining third driving voltages respectively corresponding to each color to be displayed according to the second corresponding relation when the colors to be displayed of the first image picture comprise at least two colors;

s740, determining the first driving voltage according to the maximum value of the plurality of third driving voltages.

In this embodiment, in the case where the colors to be displayed in the first image frame include at least two colors, the third driving voltages corresponding to each of the colors to be displayed may be determined according to the second correspondence, and the maximum value may be determined from the plurality of third driving voltages as the first driving voltage. It can be understood that, for a certain color to be displayed, as long as the driving voltage reaches the third driving voltage corresponding to the color to be displayed, the normal display of the color to be displayed can be ensured. And when the colors to be displayed include a plurality of types, the driving voltage should satisfy the third driving voltage corresponding to each color to be displayed, that is, in order to reduce the display power consumption of the display panel, the minimum voltage value of the first driving voltage should be the maximum value of the plurality of third driving voltages.

In S730, when the colors to be displayed of the first image frame include two colors, a third driving voltage corresponding to each of the colors to be displayed may be determined according to the second correspondence. Taking the example that the display panel comprises three light-emitting sub-pixels of red, green and blue, when the first image picture comprises green and blue, the third driving voltage corresponding to the color to be displayed is green and the third driving voltage corresponding to the color to be displayed is blue can be determined according to the second corresponding relation.

In S740, after determining the third driving voltages respectively corresponding to each color to be displayed, the first driving voltage may be determined from the maximum value of the plurality of third driving voltages. That is, when the color to be displayed includes two or more colors, the third driving voltages respectively corresponding to the respective colors to be displayed may be determined, and the maximum value of the plurality of third driving voltages may be taken as the first driving voltage.

After the color to be displayed of the first image frame includes green and blue, and the third driving voltage corresponding to the color to be displayed is determined to be green and the third driving voltage corresponding to the color to be displayed is determined to be blue, a larger value of the two third driving voltages may be used as the first driving voltage.

It should be noted that, when the display panel includes light emitting sub-pixels with three colors or more, if only one color is to be displayed in the first image frame, the first image frame is a solid color frame corresponding to the color to be displayed.

Referring to fig. 11 to 13, as an alternative embodiment, S520 may include:

s810, determining a first driving voltage of a display panel corresponding to the first image according to the missing color of the first image and the first corresponding relation; the first corresponding relation is the corresponding relation between the missing color and the driving voltage;

Or, S820, determining a first driving voltage of the display panel corresponding to the first image according to the color to be displayed and a second correspondence of the color to be displayed and the driving voltage;

s830, determining a corresponding first voltage coefficient according to the current brightness level;

s840, obtaining a fifth driving voltage according to the first voltage coefficient and the first driving voltage;

s850, adjusting the default driving voltage of the display panel to a fifth driving voltage.

In this embodiment, the display panel may determine the first driving voltage of the display panel corresponding to the first image frame according to the missing color or the color to be displayed of the first image frame. The corresponding first voltage coefficient may be determined according to the current brightness level, and the fifth driving voltage may be obtained according to the first voltage coefficient and the first driving voltage. Under the driving of the lower fifth driving voltage, the luminous sub-pixels without missing colors can still meet the luminous brightness requirement, so that the driving voltage is further reduced on the basis of not influencing the display effect of the first image picture, and the display power consumption is reduced.

S810 is identical to S610 in the above embodiment, S820 is identical to S620 in the above embodiment, and will not be described here.

In S830, the display panel may acquire a current brightness level and determine a corresponding first voltage coefficient according to the current brightness level. The first voltage coefficient may have a positive correlation with a maximum luminance value corresponding to the luminance level. The higher the luminance level, the greater the corresponding luminance at the same gray level.

The display panel may include an HDR (high dynamic range imaging), an HBM (high brightness monitor) and a plurality of Normal brightness levels, and the maximum brightness values under Gammaband corresponding to different target brightness levels are not the same. For example, the luminance value of each light emitting subpixel at the maximum gray level is higher at the HDR luminance level and the HBM luminance level, for example, the luminance value of the display panel at the highest gray level of the HDR luminance level may reach 1000nit or more, and the luminance value of the display panel at the HBM luminance level may reach 700nit or more. The Normal brightness levels may correspond to 460nit, 300nit, 120nit, 60nit, 20nit, 10nit, 6nit or other light-emitting brightness, which is not limited herein.

When the maximum brightness value corresponding to the current brightness level of the display panel is higher, in order to make the voltage variation range of the data signal correspond to a larger brightness variation range, the reference levels VGSP and VGMP of the data signal generated by the driving chip should correspond to a larger voltage interval, and at this time, the voltage difference between VGSP and VGMP is larger. When the maximum brightness value corresponding to the current brightness level is lower, the voltage variation range of the data signal corresponds to a smaller brightness variation range, and at this time, the adjustable range of the data signal can be correspondingly reduced, that is, the voltage difference between the reference levels VGSP and VGMP of the data signal can be correspondingly reduced. When the reference levels VGSP, VGMP are changed, the default driving voltage for generating the reference levels VGSP, VGMP may be reduced accordingly to reduce power consumed for maintaining the default driving voltage, thereby reducing driving power consumption of the display panel.

It can be understood that the correspondence between each brightness level and the second voltage coefficient may be stored in the driving voltage adjustment module by initializing a storage mode or an OTP (one time programmable) programming mode.

In S840, after determining the corresponding first voltage coefficient according to the current brightness level, the product of the first voltage coefficient and the first driving voltage may be calculated to obtain a fifth driving voltage.

In S850, after determining the fifth driving voltage corresponding to the first image frame, the display panel may adjust the default driving voltage provided to the driving chip of the display panel to the fifth driving voltage to reduce the display power consumption of the display panel when displaying the image frame.

The embodiment of the application also provides a driving voltage adjusting device 800 of a display panel, as shown in fig. 14, the device includes:

a type determining module 801, configured to determine a color type of an image frame to be displayed;

the voltage adjustment module 802 is configured to adjust a default driving voltage of the display panel according to a color type of the image frame, where the default driving voltages corresponding to the image frames of at least two different color types are different.

As an implementation of the present application, the type determining module 801 may include:

the proportion acquisition sub-module is used for acquiring the light emitting proportion of the light emitting sub-pixels of each color in a single image picture;

and the type determining submodule is used for determining the color type of the image frame according to the light emitting proportion.

As an implementation manner of the present application, the proportion obtaining sub-module may include:

a first determination unit configured to determine whether the image frame is a first image frame according to the light emission ratio; the first image picture is an image picture lacking at least one color;

the voltage adjustment module 802 may include:

and the voltage adjustment sub-module is used for adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed under the condition that the single image picture is the first image picture.

a brightness acquisition unit for acquiring brightness data of the light emitting sub-pixels of each color in a single image frame;

the statistics unit is used for respectively counting the luminous quantity corresponding to the luminous sub-pixels with different colors according to the brightness data;

And the proportion calculating unit is used for calculating the light emitting proportion of the light emitting sub-pixels of each color according to the light emitting quantity respectively corresponding to the light emitting sub-pixels of each color.

As an implementation manner of the present application, the luminance acquiring unit may include:

a brightness acquisition subunit, configured to acquire display data of each light emitting unit in a single image frame; the light emitting unit comprises at least three light emitting sub-pixels with different colors;

a luminance determining subunit for determining luminance data of the light emitting sub-pixels of the respective colors from the display data of each light emitting unit;

the statistics unit may include:

and the accumulation statistics subunit is used for carrying out accumulation statistics on the luminous quantity of the luminous sub-pixels with different colors according to the brightness data of the luminous sub-pixels with different colors in each luminous unit in a single image picture to obtain the luminous quantity of the luminous sub-pixels with each color in the single image picture.

As an implementation manner of the present application, the voltage adjustment module 802 may include:

and the voltage adjusting unit is used for adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed of the first image picture when the single image picture is the first image picture, wherein the first image picture is the image picture missing at least one color.

As an implementation manner of the present application, the voltage adjusting unit may include:

the first relation subunit is configured to determine a first driving voltage of the display panel corresponding to the first image frame according to the missing color of the first image frame and a first correspondence, where the first correspondence is a correspondence between the missing color and the driving voltage;

or, the second relation subunit is configured to determine, according to the color to be displayed of the first image frame and the second corresponding relation, a first driving voltage of the display panel corresponding to the first image frame, where the second corresponding relation is a corresponding relation between the color to be displayed and the driving voltage;

the first adjustment subunit is configured to adjust a default driving voltage of the display panel to a first driving voltage.

As an implementation manner of the present application, the first relationship subunit may include:

the first corresponding subunit is configured to determine, according to the first corresponding relationship, a second driving voltage corresponding to each missing color, where the missing colors of the first image frame include at least two types;

and the first determination subunit is used for determining the first driving voltage according to the minimum value of the plurality of second driving voltages.

As an implementation manner of the present application, the second relationship subunit may include:

The second corresponding subunit is configured to determine, according to a second corresponding relationship, a third driving voltage corresponding to each color to be displayed when the colors to be displayed of the first image frame include at least two colors;

and a second determining subunit for determining the first driving voltage according to the maximum value of the plurality of third driving voltages.

the coefficient determining subunit is used for determining a corresponding first voltage coefficient according to the current brightness level;

a calculating subunit, configured to obtain a fifth driving voltage according to the first voltage coefficient and the first driving voltage;

And the second adjusting subunit is used for adjusting the default driving voltage of the display panel to a fifth driving voltage.

Fig. 15 is a schematic hardware structure of a driving voltage adjusting apparatus for a display panel according to an embodiment of the present application.

The driving voltage adjusting apparatus of the display panel may include a processor 901 and a memory 902 storing computer program instructions.

In particular, the processor 901 may include a Central Processing Unit (CPU), or a specific integrated circuit (ApplicationSpecificIntegratedCircuit, ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present application.

Memory 902 may include mass storage for data or instructions. By way of example, and not limitation, memory 902 may comprise a hard disk drive (HardDiskDrive, HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or universal serial bus (UniversalSerialBus, USB) drive, or a combination of two or more of these. The memory 902 may include removable or non-removable (or fixed) media, where appropriate. The memory 902 may be internal or external to the driving voltage adjusting device of the display panel, where appropriate. In a particular embodiment, the memory 902 is a non-volatile solid state memory.

In particular embodiments, memory 902 may include read-only memory (ROM), random-access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical/tangible memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software comprising computer-executable instructions and when the software is executed (e.g., by one or more processors) it is operable to perform the operations described with reference to methods in accordance with aspects of the present disclosure.

The processor 901 implements the driving voltage adjusting method of any one of the display panels of the above-described embodiments by reading and executing the computer program instructions stored in the memory 902.

In one example, the driving voltage adjusting apparatus of the display panel may further include a communication interface 903 and a bus 910. As shown in fig. 15, the processor 901, the memory 902, and the communication interface 903 are connected to each other via a bus 910, and communicate with each other.

The communication interface 903 is mainly used to implement communication between each module, device, unit, and/or apparatus in the embodiment of the present application.

The bus 910 includes hardware, software, or both, that couples components of the driving voltage adjustment device of the display panel to each other. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. Bus 910 may include one or more buses, where appropriate. Although embodiments of the application have been described and illustrated with respect to a particular bus, the application contemplates any suitable bus or interconnect.

In addition, in combination with the driving voltage adjustment method of the display panel in the above embodiment, the embodiment of the application may be implemented by providing a computer storage medium. The computer storage medium has stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement a method of adjusting a driving voltage of a display panel according to any of the above embodiments.

It should be understood that the application is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present application.

The functional blocks shown in the above block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.

It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.

Aspects of the present disclosure are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations 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, 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, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present application, and they should be included in the scope of the present application.

Claims

1. A driving voltage adjusting method of a display panel, the method comprising:

determining the color type of an image picture to be displayed;

and adjusting the default driving voltage of the display panel according to the color type of the image picture, wherein the default driving voltages corresponding to the image pictures with at least two different color types are different.

2. The method according to claim 1, wherein the types of colors corresponding to the image frames of different color types are different;

preferably, the default driving voltage corresponding to the image picture is smaller than the default driving voltage corresponding to the image picture including green when the image picture is a pure red image picture, a pure blue image picture or a red-blue mixed green missing image picture;

Preferably, the default driving voltage corresponding to the image picture is greater than or equal to the default driving voltage corresponding to the image picture which is the pure blue image picture;

preferably, the power supply of the display panel outputs the default driving voltage to a driving chip of the display panel;

preferably, determining the color type of the image frame to be displayed includes:

determining the color type of the image picture according to the light-emitting proportion;

preferably, the light emitting sub-pixel includes a red light emitting sub-pixel, a green light emitting sub-pixel, and a blue light emitting sub-pixel.

3. The method for adjusting a driving voltage of a display panel according to claim 2, wherein the step of obtaining the light emission ratios of the light emission sub-pixels of the respective colors in the single image frame comprises:

respectively counting the luminous quantity corresponding to the luminous sub-pixels with different colors according to the brightness data;

4. The method for adjusting a driving voltage of a display panel according to claim 3, wherein the acquiring the luminance data of the light emitting sub-pixels of each color in the single image frame comprises:

the counting of the respective corresponding light emission numbers of the light emitting sub-pixels with different colors according to the brightness data includes:

5. The method of claim 1, wherein adjusting the default driving voltage of the display panel according to the color type of the image frame comprises:

and under the condition that the single image picture is a first image picture, adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed of the first image picture, wherein the first image picture is an image picture missing at least one color.

6. The method according to claim 5, wherein, in the case where the single image frame is a first image frame, adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed of the first image frame comprises:

determining a first driving voltage of the display panel corresponding to the first image picture according to the missing color of the first image picture and a first corresponding relation, wherein the first corresponding relation is the corresponding relation between the missing color and the driving voltage;

or determining a first driving voltage of the display panel corresponding to the first image picture according to the color to be displayed and a second corresponding relation of the first image picture, wherein the second corresponding relation is the corresponding relation between the color to be displayed and the driving voltage;

and adjusting the default driving voltage of the display panel to be a first driving voltage.

7. The method according to claim 6, wherein determining the first driving voltage of the display panel corresponding to the first image frame according to the missing color of the first image frame and the first correspondence relation comprises:

Determining second driving voltages respectively corresponding to each missing color according to the first corresponding relation when the missing colors of the first image picture comprise at least two types;

determining the first driving voltage according to the minimum value of the plurality of second driving voltages;

or determining a first driving voltage of the display panel corresponding to the first image picture according to the color to be displayed and a second corresponding relation of the first image picture, including:

the first driving voltage is determined according to a maximum value of a plurality of third driving voltages.

8. The method according to claim 5, wherein, in the case where the single image frame is a first image frame, adjusting the default driving voltage of the display panel according to the missing color and/or the color to be displayed of the first image frame comprises:

and adjusting the default driving voltage of the display panel to a fifth driving voltage.

9. A driving voltage adjusting apparatus of a display panel, the apparatus comprising:

the voltage adjustment module is used for adjusting the default driving voltage of the display panel according to the color type of the image picture, and the default driving voltages corresponding to the image pictures with at least two different color types are different.

10. A driving voltage adjusting apparatus of a display panel, characterized in that the driving voltage adjusting apparatus of a display panel comprises: a processor and a memory storing computer program instructions;

the processor, when executing the computer program instructions, implements the driving voltage adjustment method of the display panel according to any one of claims 1-8.