CN108877700B - Method and device for displaying image - Google Patents
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- CN108877700B CN108877700B CN201710318434.XA CN201710318434A CN108877700B CN 108877700 B CN108877700 B CN 108877700B CN 201710318434 A CN201710318434 A CN 201710318434A CN 108877700 B CN108877700 B CN 108877700B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
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Abstract
The invention discloses a method and a device for displaying an image, and belongs to the technical field of display. The method is applied to a terminal, the terminal comprises a display panel, the display panel comprises a plurality of display units corresponding to pixels, each display unit comprises a sub-display unit corresponding to a white channel and sub-display units corresponding to a plurality of primary color channels, and the method comprises the following steps: when displaying a gray image, acquiring a target brightness level of a screen set by a user; determining a target display mode and a target backlight power corresponding to the target brightness level according to a preset corresponding relation among a display mode, the backlight power and the brightness level of a screen; and displaying and outputting the gray-scale image based on the target display mode and the target backlight power. By adopting the invention, the electric energy consumed by the backlight can be saved when the image is displayed.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a method and an apparatus for displaying an image.
Background
The display panel is one of the most common input and output devices of electronic devices, the display panel has the capability of displaying text information and image information, and the liquid crystal display panel is a common display panel.
The liquid crystal display panel comprises a plurality of pixel display units, the display unit of each pixel can be divided into sub-display units corresponding to three primary color channels of red, green and blue, and each sub-display unit can be composed of a driving circuit, a liquid crystal layer and a color filter. The liquid crystal display panel may further include a backlight source for supplying light to each of the sub display units, and a polarizing plate for changing a direction of the light.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
each pixel in the image is composed of three colors of red, green and blue, and since the light transmittance of the color filters in the sub-display units corresponding to the three colors is poor, a large light intensity will be lost when the backlight light passes through the color filters, and therefore, if the screen needs a high brightness, a strong backlight intensity needs to be provided, and thus, the power consumed by the backlight when displaying the image is large.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present invention provide a method and an apparatus for displaying an image, where the technical solution is as follows:
in a first aspect, a method for displaying an image is provided, where the method is applied to a terminal, where the terminal includes a display panel, where the display panel includes a plurality of display units corresponding to pixels, and each display unit includes a sub-display unit corresponding to a white channel and sub-display units corresponding to a plurality of primary color channels, respectively, where the method includes:
when displaying a gray image, acquiring a target brightness level of a screen set by a user;
determining a target display mode and a target backlight power corresponding to the target brightness level according to a preset corresponding relationship among a display mode, a backlight power and a brightness level of a screen, wherein the display mode in the corresponding relationship includes a first display mode and a second display mode, the first display mode is a display mode in which only a sub-display unit corresponding to the white channel is enabled, and the second display mode is a display mode in which the sub-display unit corresponding to the white channel and the sub-display units corresponding to the plurality of primary color channels are enabled simultaneously;
and displaying and outputting the gray-scale image based on the target display mode and the target backlight power.
Optionally, the corresponding relationship includes a first brightness level, in the corresponding relationship, the brightness levels corresponding to the first display mode are all smaller than or equal to the first brightness level, and the brightness levels corresponding to the second display mode are all larger than the first brightness level.
Optionally, in the corresponding relationship, the first backlight power corresponding to the first brightness level is divided by a preset ratio, and is equal to a difference between the lowest backlight power in the second display mode and the backlight power of the adjacent brightness level in the second display mode; wherein the first backlight power is determined by the working power of each sub-display unit and the preset ratio; the preset ratio is the ratio of the light transmission amount of each display unit to the light transmission amount of the sub-display unit corresponding to the white channel in each display unit.
Therefore, the light transmission ratio of each sub-display unit in each display unit can determine the switching point of the first display mode and the second display mode so as to ensure that the power consumption of the displayed picture is reduced to the minimum under different brightness levels.
Optionally, in the corresponding relationship, a ratio of a difference between backlight powers corresponding to adjacent luminance levels in the first display mode to a difference between backlight powers corresponding to adjacent luminance levels in the second display mode is equal to the preset ratio.
Therefore, the brightness change of the screen corresponding to each adjacent brightness level can be ensured to be more uniform.
Optionally, the display areas of the sub-display units corresponding to the multiple primary color channels are equal, and the display area of the sub-display unit corresponding to the white channel is larger than the display area of the sub-display unit corresponding to each primary color channel.
Thus, for a certain screen brightness, the required backlight intensity is lower, so that the power consumed by the backlight when displaying images can be saved.
In a second aspect, an apparatus for displaying an image is provided, the apparatus including a display panel, the display panel including a plurality of display units corresponding to pixels, each display unit including a sub-display unit corresponding to a white channel and a sub-display unit corresponding to a plurality of primary color channels, the apparatus including:
the acquisition module is used for acquiring the target brightness level of the screen set by a user when the gray image is displayed;
the display device comprises a determining module, a display module and a display module, wherein the determining module is used for determining a target display mode and a target backlight power corresponding to a target brightness level according to a preset corresponding relationship among a display mode, a backlight power and a brightness level of a screen, the display mode in the corresponding relationship comprises a first display mode and a second display mode, the first display mode is a display mode of only enabling a sub-display unit corresponding to a white channel, and the second display mode is a display mode of simultaneously enabling the sub-display unit corresponding to the white channel and the sub-display units corresponding to the multiple primary color channels;
and the display module is used for displaying and outputting the gray-scale image based on the target display mode and the target backlight power.
Optionally, the corresponding relationship includes a first brightness level, in the corresponding relationship, the brightness levels corresponding to the first display mode are all smaller than or equal to the first brightness level, and the brightness levels corresponding to the second display mode are all larger than the first brightness level.
Optionally, in the corresponding relationship, the first backlight power corresponding to the first brightness level is divided by a preset ratio, and is equal to a difference between the lowest backlight power in the second display mode and the backlight power of the adjacent brightness level in the second display mode;
wherein the first backlight power is determined by the working power of each sub-display unit and the preset ratio; the preset ratio is the ratio of the light transmission amount of each display unit to the light transmission amount of the sub-display unit corresponding to the white channel in each display unit.
Optionally, in the corresponding relationship, a ratio of a difference between backlight powers corresponding to adjacent luminance levels in the first display mode to a difference between backlight powers corresponding to adjacent luminance levels in the second display mode is equal to the preset ratio.
Optionally, the display areas of the sub-display units corresponding to the multiple primary color channels are equal, and the display area of the sub-display unit corresponding to the white channel is larger than the display area of the sub-display unit corresponding to each primary color channel.
In a third aspect, there is provided an apparatus for displaying an image, the apparatus comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the method of the first aspect.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the embodiment of the present invention, when displaying a grayscale image, if a user adjusts the brightness level of a screen, a terminal may determine, according to the brightness level set by the user, a corresponding display mode and backlight power in a preset corresponding relationship between the display mode, the backlight power, and the brightness level of the screen, and then may display and output the grayscale image based on the determined display mode and backlight power. Therefore, as the sub-display units corresponding to the white channels with higher light transmittance are added in the display units, when certain screen brightness is needed, the requirement on backlight intensity is lower, and the electric energy consumed by the backlight when an image is displayed is less.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for displaying an image according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a display area of a sub-display unit according to an embodiment of the present invention
Fig. 4 is a schematic structural diagram of a display unit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display unit according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an apparatus for displaying images according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a method for displaying an image, wherein an execution main body of the method is a terminal. The terminal can be any terminal with a function of displaying images, such as a mobile phone, a computer, and the like, and the images can be any images capable of being displayed on the terminal, such as photos, video images, application images, and the like. The terminal may be provided with a processor, a memory, and a screen, wherein the processor may be configured to process a process of displaying an image, the memory may be configured to store data required in the following process and generated data, the screen may be configured to display content, such as a target image, required to be displayed to a user in the following process, and the screen may include a display panel, the display panel includes a plurality of display units corresponding to pixels, and each display unit includes a sub-display unit corresponding to a white channel and a sub-display unit corresponding to a plurality of primary color channels, as shown in fig. 1. The terminal can also be provided with a screen, an input unit and a communication component, wherein the input unit can be used for inputting instructions or setting information to the terminal by a user. In this embodiment, the terminal is used as a mobile phone, and the plurality of primary color channels are red, green, and blue channels to perform detailed description of the scheme.
The process flow shown in fig. 2 will be described in detail below with reference to the specific embodiments, and the contents may be as follows:
In implementation, when the terminal is in a standby state, the backlight of the screen of the terminal is turned off, no display content exists on the screen, the user can operate on the terminal to control the terminal to display an image browsed by the user, and before the image is displayed, the terminal can receive a display instruction of the image, so that corresponding image data can be acquired, and the image is displayed and output based on the image data. In the process of displaying the image, the terminal can judge the image type of the image according to the image data of the image, wherein the image type can represent the type information of the color composition of the image and can be divided into a black-and-white image, a gray image and a color image. The image data may contain pixel values for all pixels in the image, and the pixel value for each pixel may be comprised of channel values for a plurality of primary color channels. Furthermore, the terminal can determine the image type of the image by comparing the channel values of the primary color channels in the image data, and if the channel values of the primary color channels in any pixel of the image are the same and are 255 or 0, the image can be regarded as a black-and-white image; if the channel values of all primary color channels in any pixel of the image are the same, the image can be regarded as a gray image; if the channel values of the respective primary color channels of each pixel of the image are disordered, the image can be regarded as a color image.
When the image displayed at present is detected to be a gray image, if the user adjusts the brightness of the screen, the terminal may acquire the target brightness level of the screen set by the user. It can be understood that the terminal sets different levels for the screen brightness, and when the user adjusts the screen brightness, the screen brightness is adjusted according to the set brightness level.
The display modes in the corresponding relationship include a first display mode and a second display mode, the first display mode is a display mode in which only the sub-display unit corresponding to the white channel is enabled, and the second display mode is a display mode in which the sub-display unit corresponding to the white channel and the sub-display units corresponding to the plurality of primary color channels are enabled simultaneously.
In an implementation, the display panel of the terminal comprises a plurality of display units corresponding to pixels, each display unit comprises a sub-display unit corresponding to a white channel and a sub-display unit corresponding to a plurality of primary color channels, and when an image is displayed, the terminal supports display by using all color channels and by using part of color channels, namely the terminal supports a plurality of display modes. Because the image data of the existing image is generally the image data of the fixed red, green and blue three primary colors, that is, the image data of each pixel only contains the channel values of the red channel, the green channel and the blue channel, when the channel values of the red, green and blue three primary color channels are the same, the gray scale pixel can be formed. Considering that the terminal according to the present disclosure includes a plurality of primary color channels and a white channel at the same time, when a gray image needs to be displayed, only the sub-display unit corresponding to the white channel may be enabled to display (i.e., corresponding to the first display mode), or the sub-display units corresponding to all color channels may be enabled to display (i.e., corresponding to the second display mode).
It is understood that the backlight power may affect the brightness of the screen, and when the backlight power is higher, the brightness of the terminal screen is higher, and when the backlight power is lower, the brightness of the terminal screen is lower. When the user is adjusting the screen brightness, it is essential to adjust the backlight power, that is, each brightness level of the screen corresponds to a fixed backlight power. In combination with the two alternative display modes described above when displaying a gray scale image, each brightness level may correspond to a fixed backlight power and display mode. In this way, the terminal may pre-store the corresponding relationship between the display mode, the backlight power and the screen brightness level, and after the target brightness level of the screen set by the user is obtained, the terminal may determine the target display mode and the target backlight power corresponding to the target brightness level according to the corresponding relationship.
Optionally, the corresponding relationship includes a first brightness level, in the corresponding relationship, the brightness levels corresponding to the first display mode are all smaller than or equal to the first brightness level, and the brightness levels corresponding to the second display mode are all larger than the first brightness level.
In an implementation, in the correspondence relationship between the display mode, the backlight power and the brightness level involved in step 202, there may be a first brightness level, which may be the highest brightness level corresponding to the first display mode. It is understood that the first display mode is a display mode in which only the sub-display unit corresponding to the white channel is enabled, and the second display mode is a display mode in which the sub-display unit corresponding to the white channel and the sub-display units corresponding to the plurality of primary color channels are simultaneously enabled, so that under the same backlight intensity, since the sub-display units of the plurality of primary color channels are in an on state and can also transmit a certain amount of light, the light transmission amount of the second display mode is significantly greater than that of the first display mode. Therefore, the brightness levels corresponding to the second display mode are all larger than the brightness levels corresponding to the first display mode, i.e. larger than the first brightness level. In the present solution, considering that the sub-display units will consume a certain power when in a working state, under a certain screen brightness requirement, the sub-display units corresponding to the plurality of primary color channels are selected to be turned off, and only the sub-display unit corresponding to the white channel is turned on, which will further save power consumption, and will be described in detail later.
Optionally, in the corresponding relationship, the first backlight power corresponding to the first brightness level is divided by a preset ratio, which is equal to a difference between the lowest backlight power in the second display mode and the backlight power of the adjacent brightness level in the second display mode.
The first backlight power is determined by the working power of each sub-display unit and a preset ratio; the preset ratio is the ratio of the light transmission amount of each display unit to the light transmission amount of the sub-display unit corresponding to the white channel in each display unit.
In an implementation, the terminal may first determine a ratio (i.e., a preset ratio) between the light transmission amount of each display unit and the light transmission amount of the sub-display unit corresponding to the white channel in each display unit. Specifically, the terminal includes a display panel including a plurality of display units corresponding to the pixels, and each display unit includes a sub-display unit corresponding to the white channel and sub-display units corresponding to the red, green, and blue channels. Each sub-display unit is provided with a color filter with corresponding color, and the color of each color filter is different, and the light transmission capacity of each color filter is correspondingly different, namely, the light transmission capacity can be represented by the light transmission rate. Here, based on a large number of tests, the transmittance of the color filters in different sub-display units (also referred to as the transmittance of the sub-display units) can be roughly estimated, and specifically, the following can be obtained: the transmittance of the red filter R is about 15%, the transmittance of the green filter G is about 50%, the transmittance of the blue filter B is about 10%, and the transmittance of the white filter W is about 95%. The light transmittance is given by way of example, and the present invention is not limited thereto. Thus, the transmittance of a display unit can be determined based on the transmittance of the sub-display unit corresponding to each color channel and the display area of the sub-display unit corresponding to each color channel, specifically, assuming that the display area of the sub-display unit corresponding to the white channel occupies 1/3 of the display unit, and then the transmittance of the display unit can be: 2/3 × 1/3: (15% + 50% + 10%) +1/3 × 95% ═ 0.16+0.32 ═ 0.48 ═ 48%. If only the sub-display unit corresponding to the white channel is turned on, the light transmission amount may be 1/3 × 95% -0.32% -32%, so the preset ratio may be 48% -32% -3: 2. Of course, the values involved in the above process may be any reasonable values, for example, the transmittances of the plurality of primary color channels are x1, x2, · · xn, the transmittance of the white channel is y, the display area ratio corresponding to each primary color channel is a, and the display area ratio corresponding to the white channel is 1-na, so the preset ratio M may be
And then, determining a first backlight power corresponding to the first brightness level according to the working power of each sub-display unit and the preset ratio. Specifically, the total operating efficiency of the sub-display units corresponding to the multiple primary color channels may be W, the first backlight power is a, when the screen is in the first brightness level, the sub-display unit displays according to the first display mode, the corresponding first backlight power a, and if the sub-display unit displays according to the second display mode, the corresponding backlight powers B, a, and B should satisfy that a-B is not more than W, so when switching to the first display mode, in order to ensure that the brightness level of the screen is not changed, the backlight power of the terminal needs to be increased, and based on consideration of energy saving, when the increased backlight power should be smaller than the operating power of the multiple primary color channels saved in the first display mode, the first display mode may be enabled to save more energy, so that the first backlight power a should at least satisfy the following relational expression: A/(A-W) ═ M, i.e., A ═ MW/(M-1). Here, based on the above example, assuming that the total operating efficiency W of the sub-display units of the plurality of primary color channels is 100mw, and M is 3:2, a is 300 mw. It should be noted that the operating power of the sub-display unit corresponding to each primary color channel may include the power consumed by the driving circuit, the gate circuit and the digital circuit corresponding to each sub-display unit.
Further, the first backlight power corresponding to the first brightness level is divided by the preset ratio, which is equal to the difference between the lowest backlight power in the second display mode and the backlight power of the adjacent brightness level in the second display mode, that is, the lowest backlight power B in the second display mode, the backlight power Δ B of the adjacent brightness level in the second display mode, the first backlight power a, and the preset ratio M satisfy the following relationship: and A/M is B-delta B. Continuing with the above example, it can be obtained that B- Δ B is equal to 200mw, in other words if the second display mode is used to achieve the first brightness level, the backlight power should be set to 200 mw.
Optionally, in the corresponding relationship, a ratio of a difference between backlight powers corresponding to adjacent luminance levels in the first display mode to a difference between backlight powers of adjacent luminance levels in the second display mode is equal to a preset ratio.
In implementation, based on the above calculation, in order to ensure that the luminance variation of each luminance level screen is uniform, a relationship between a difference between backlight powers corresponding to adjacent luminance levels in the first display mode and a difference between backlight powers corresponding to adjacent luminance levels in the second display mode may be determined according to the preset ratio. Namely, the ratio delta a/delta b of the difference delta a between the backlight powers corresponding to the adjacent brightness levels in the first display mode and the difference delta b between the backlight powers corresponding to the adjacent brightness levels in the second display mode is equal to the preset ratio M. Based on the above example, Δ a/. DELTA.b equals 3: 2. Further, the skilled person can determine Δ a and Δ b according to the upper limit of the backlight power and the total brightness level, for example, if the upper limit of the backlight power is 400mw and the brightness level is 10, then Δ a is 60mw and Δ b is 40mw, and specifically refer to table 1:
TABLE 1
And step 203, displaying and outputting the gray-scale image based on the target display mode and the target backlight power.
In implementation, after determining a target display mode and a target backlight power corresponding to a target brightness level set by a user, the terminal may adjust the current display mode to the target display mode, adjust the backlight power to the target backlight power, and then display and output the grayscale image. It should be noted that, during the adjustment process, since the display mode is changed, in order to ensure that the color of the image is not distorted, the image data of the image needs to be converted before the display, and then the display is performed based on the converted image data.
In the embodiment of the present invention, when displaying a grayscale image, if a user adjusts the brightness level of a screen, a terminal may determine, according to the brightness level set by the user, a corresponding display mode and backlight power in a preset corresponding relationship between the display mode, the backlight power, and the brightness level of the screen, and then may display and output the grayscale image based on the determined display mode and backlight power. Therefore, as the sub-display units corresponding to the white channels with higher light transmittance are added in the display units, when certain screen brightness is needed, the requirement on backlight intensity is lower, and the electric energy consumed by the backlight when an image is displayed is less.
Another embodiment of the present invention further discloses a display panel, which is used for implementing the method for displaying images, and the content can be as follows:
the display panel includes a plurality of display units of pixels, each display unit includes a sub-display unit corresponding to a white channel and a sub-display unit corresponding to a plurality of primary color channels, wherein, as shown in fig. 3, the display areas of the sub-display units corresponding to the plurality of primary color channels are equal, and the display area of the sub-display unit corresponding to the white channel is larger than the display area of the sub-display unit corresponding to each primary color channel.
Optionally, the plurality of primary color channels includes a red color channel, a blue color channel, and a green color channel.
In this way, pixels of different colors can be formed based on the three primary color channels of red, green, and blue.
Optionally, the display areas of the sub-display units corresponding to the multiple primary color channels and the sub-display units corresponding to the white color channels are rectangular display areas arranged in parallel and equal in length.
Optionally, the rectangular display areas of the sub-display units in each display unit are arranged in parallel in a manner that the long sides are vertical according to the same arrangement sequence.
Optionally, the rectangular display areas of the sub-display units in each display unit are arranged in parallel in a manner that the long sides are horizontal according to the same arrangement sequence.
Optionally, the display area of the sub-display unit corresponding to the white channel is smaller than half of the display area of the display unit.
In this way, it is possible to avoid that the white channel has too much influence on the accuracy of the pixel color.
Optionally, the display area of the sub-display unit corresponding to the white channel occupies 1/3 of the display area of the display unit.
Alternatively, each sub-display unit includes a TFT (thin film transistor).
Alternatively, as shown in fig. 4, the display panel includes a gate circuit and a data circuit, the gate of each TFT is connected to the gate circuit, and the source is connected to the data circuit.
Thus, the uniform gate circuit can control the on/off of the TFT in the sub-display unit corresponding to the white color channel and each primary color channel.
Alternatively, as shown in fig. 5, the display panel includes a first gate circuit, a second gate circuit and a data circuit, the source of each TFT switch is connected to the data circuit, the gate of the TFT switch of the sub-display unit corresponding to each primary color channel is connected to the first gate circuit, and the gate of the TFT switch of the sub-display unit corresponding to each white color channel is connected to the second gate circuit.
Thus, the first gate circuit and the second gate circuit can respectively control the conduction or non-conduction of the TFTs in the sub-display units corresponding to the white color channel and each primary color channel.
Based on the same technical concept, an embodiment of the present invention further provides an apparatus for displaying an image, where the apparatus includes a display panel, the display panel includes a plurality of display units corresponding to pixels, each display unit includes a sub-display unit corresponding to a white channel and sub-display units corresponding to a plurality of primary color channels, as shown in fig. 6, the apparatus includes:
an obtaining module 601, configured to obtain a target brightness level of a screen set by a user when displaying a grayscale image;
a determining module 602, configured to determine a target display mode and a target backlight power corresponding to a target brightness level according to a preset corresponding relationship between a display mode, a backlight power, and a brightness level of a screen, where the display mode in the corresponding relationship includes a first display mode and a second display mode, the first display mode is a display mode in which only a sub-display unit corresponding to a white channel is enabled, and the second display mode is a display mode in which a sub-display unit corresponding to a white channel and a sub-display unit corresponding to each of the multiple primary color channels are enabled simultaneously;
and a display module 603, configured to display and output the grayscale image based on the target display mode and the target backlight power.
Optionally, the corresponding relationship includes a first brightness level, in the corresponding relationship, the brightness levels corresponding to the first display mode are all smaller than or equal to the first brightness level, and the brightness levels corresponding to the second display mode are all larger than the first brightness level.
Optionally, in the corresponding relationship, the first backlight power corresponding to the first brightness level is divided by a preset ratio, and is equal to a difference between the lowest backlight power in the second display mode and the backlight power of the adjacent brightness level in the second display mode;
wherein the first backlight power is determined by the working power of each sub-display unit and the preset ratio; the preset ratio is the ratio of the light transmission amount of each display unit to the light transmission amount of the sub-display unit corresponding to the white channel in each display unit.
Optionally, in the corresponding relationship, a ratio of a difference between backlight powers corresponding to adjacent luminance levels in the first display mode to a difference between backlight powers corresponding to adjacent luminance levels in the second display mode is equal to the preset ratio.
Optionally, the display areas of the sub-display units corresponding to the multiple primary color channels are equal, and the display area of the sub-display unit corresponding to the white channel is larger than the display area of the sub-display unit corresponding to each primary color channel.
In the embodiment of the present invention, when displaying a grayscale image, if a user adjusts the brightness level of a screen, a terminal may determine, according to the brightness level set by the user, a corresponding display mode and backlight power in a preset corresponding relationship between the display mode, the backlight power, and the brightness level of the screen, and then may display and output the grayscale image based on the determined display mode and backlight power. Therefore, as the sub-display units corresponding to the white channels with higher light transmittance are added in the display units, when certain screen brightness is needed, the requirement on backlight intensity is lower, and the electric energy consumed by the backlight when an image is displayed is less.
It should be noted that: in the device for displaying an image according to the above embodiment, when displaying an image, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus for displaying an image and the method for displaying an image provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.
Yet another exemplary embodiment of the present disclosure shows a schematic structural diagram of a terminal. The terminal may be a mobile phone, a tablet computer, a computer, etc.
Referring to fig. 7, terminal 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input/output (I/O) interface 712, a sensor component 714, and a communication component 716.
The processing component 702 generally controls overall operation of the terminal 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing element 702 may include one or more processors 720 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 702 may include one or more modules that facilitate interaction between the processing component 702 and other components. For example, the processing component 702 can include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.
The memory 704 is configured to store various types of data to support operation at the terminal 700. Examples of such data include instructions for any application or method operating on terminal 700, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 704 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 708 comprises a screen providing an output interface between the terminal 700 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 708 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the terminal 700 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a Microphone (MIC) configured to receive external audio signals when the audio output device 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 704 or transmitted via the communication component 716.
The I/O interface 712 provides an interface between the processing component 702 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 714 includes one or more sensors for providing various aspects of state assessment for the terminal 700. For example, sensor assembly 714 can detect an open/closed state of terminal 700, relative positioning of components, such as a display and keypad of terminal 700, change in position of terminal 700 or a component of terminal 700, presence or absence of user contact with terminal 700, orientation or acceleration/deceleration of terminal 700, and temperature change of terminal 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 716 is configured to facilitate communications between the terminal 700 and other devices in a wired or wireless manner. The terminal 700 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication section 716 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the terminal 700 can be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 704 comprising instructions, executable by the processor 720 of the terminal 700 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Yet another embodiment of the present disclosure provides a non-transitory computer-readable storage medium, in which instructions, when executed by a processor of a terminal, enable the terminal to perform the method of displaying an image in the above-described embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. A method for displaying images, the method being applied to a terminal, the terminal including a display panel, the display panel including a plurality of display units corresponding to pixels, each display unit including a sub-display unit corresponding to a white channel and sub-display units corresponding to a plurality of primary color channels, the method comprising:
when displaying a gray image, acquiring a target brightness level of a screen set by a user;
determining a target display mode and a target backlight power corresponding to the target brightness level according to a preset corresponding relationship among a display mode, a backlight power and a brightness level of a screen, wherein the display mode in the corresponding relationship includes a first display mode and a second display mode, the first display mode is a display mode in which only a sub-display unit corresponding to the white channel is enabled, and the second display mode is a display mode in which the sub-display unit corresponding to the white channel and the sub-display units corresponding to the plurality of primary color channels are enabled simultaneously;
and displaying and outputting the gray-scale image based on the target display mode and the target backlight power.
2. The method according to claim 1, wherein the correspondence relationship comprises a first brightness level, and in the correspondence relationship, the brightness levels corresponding to the first display mode are all less than or equal to the first brightness level, and the brightness levels corresponding to the second display mode are all greater than the first brightness level.
3. The method according to claim 2, wherein in the corresponding relationship, the first backlight power corresponding to the first brightness level divided by a preset ratio is equal to the difference between the lowest backlight power in the second display mode and the backlight power of the adjacent brightness level in the second display mode;
wherein the first backlight power is determined by the working power of each sub-display unit and the preset ratio; the preset ratio is the ratio of the light transmission amount of each display unit to the light transmission amount of the sub-display unit corresponding to the white channel in each display unit.
4. The method according to claim 3, wherein in the correspondence relationship, a ratio of a difference between backlight powers corresponding to adjacent luminance levels in the first display mode and a difference between backlight powers corresponding to adjacent luminance levels in the second display mode is equal to the preset ratio.
5. The method according to claim 1, wherein the sub-display units corresponding to the plurality of primary color channels have equal display areas, and the display area of the sub-display unit corresponding to the white color channel is larger than the display area of the sub-display unit corresponding to each primary color channel.
6. An apparatus for displaying an image, the apparatus comprising a display panel, the display panel comprising a plurality of display elements corresponding to pixels, each display element comprising a sub-display element corresponding to a white channel and a plurality of sub-display elements corresponding to primary color channels, the apparatus comprising:
the acquisition module is used for acquiring the target brightness level of the screen set by a user when the gray image is displayed;
the display device comprises a determining module, a display module and a display module, wherein the determining module is used for determining a target display mode and a target backlight power corresponding to a target brightness level according to a preset corresponding relationship among a display mode, a backlight power and a brightness level of a screen, the display mode in the corresponding relationship comprises a first display mode and a second display mode, the first display mode is a display mode of only enabling a sub-display unit corresponding to a white channel, and the second display mode is a display mode of simultaneously enabling the sub-display unit corresponding to the white channel and the sub-display units corresponding to the multiple primary color channels;
and the display module is used for displaying and outputting the gray-scale image based on the target display mode and the target backlight power.
7. The apparatus according to claim 6, wherein the correspondence relationship comprises a first brightness level, and in the correspondence relationship, the brightness levels corresponding to the first display mode are all less than or equal to the first brightness level, and the brightness levels corresponding to the second display mode are all greater than the first brightness level.
8. The apparatus according to claim 7, wherein in the corresponding relationship, the first backlight power corresponding to the first brightness level divided by a predetermined ratio is equal to the difference between the lowest backlight power in the second display mode and the backlight power of the adjacent brightness level in the second display mode;
wherein the first backlight power is determined by the working power of each sub-display unit and the preset ratio; the preset ratio is the ratio of the light transmission amount of each display unit to the light transmission amount of the sub-display unit corresponding to the white channel in each display unit.
9. The apparatus according to claim 8, wherein in the correspondence relationship, a ratio of a difference between backlight powers corresponding to adjacent luminance levels in the first display mode and a difference between backlight powers corresponding to adjacent luminance levels in the second display mode is equal to the preset ratio.
10. The apparatus of claim 6, wherein the sub-display units corresponding to the plurality of primary color channels have equal display areas, and the display area of the sub-display unit corresponding to the white color channel is larger than the display area of the sub-display unit corresponding to each primary color channel.
11. An apparatus for displaying an image, the apparatus comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the steps of the method of any one of claims 1-5.
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| CN113257162B (en) * | 2020-02-12 | 2022-12-27 | 北京小米移动软件有限公司 | Screen brightness adjusting method and device and storage medium |
| CN112578898A (en) * | 2020-12-29 | 2021-03-30 | 广东湾区智能终端工业设计研究院有限公司 | Screen power consumption optimization method and device, computing equipment and storage medium |
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| TW200405082A (en) * | 2002-09-11 | 2004-04-01 | Samsung Electronics Co Ltd | Four color liquid crystal display and driving device and method thereof |
| KR101987383B1 (en) * | 2011-11-11 | 2019-06-10 | 엘지디스플레이 주식회사 | 4 primary color display device and pixel data rendering method of thereof |
| JP2015031874A (en) * | 2013-08-05 | 2015-02-16 | キヤノン株式会社 | Display device, control method of display device, and program |
| EP3147893B1 (en) * | 2015-09-24 | 2021-06-09 | Dolby Laboratories Licensing Corporation | Light field simulation techniques for dual modulation |
| CN105979097A (en) * | 2016-06-29 | 2016-09-28 | 努比亚技术有限公司 | Mobile terminal and method for adjusting backlight brightness of display screen of mobile terminal |
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