CN111341254B - Brightness adjusting method and device of display screen - Google Patents
Brightness adjusting method and device of display screen Download PDFInfo
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- CN111341254B CN111341254B CN201811557837.0A CN201811557837A CN111341254B CN 111341254 B CN111341254 B CN 111341254B CN 201811557837 A CN201811557837 A CN 201811557837A CN 111341254 B CN111341254 B CN 111341254B
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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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
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Abstract
The disclosure relates to a brightness adjustment method and device for a display screen, comprising the following steps: determining a target brightness of a display screen; when the target brightness is lower than a brightness adjustment threshold, adjusting the display screen to a first brightness, wherein the first brightness is greater than the brightness adjustment threshold; and closing part of display sub-pixels of the display screen by adopting a preset adjusting mode, wherein the part of display sub-pixels are distributed in the display screen in a symmetrical mode. According to the brightness adjusting method and device for the display screen, the problem that the display screen is prone to display uneven mura under the conditions of low brightness and low gray scale can be avoided, and the problem that electronic equipment is dazzling when used in a dark environment can be relieved.
Description
Technical Field
The disclosure relates to the technical field of terminals, and in particular relates to a brightness adjustment method and device for a display screen.
Background
An OLED (Organic Light-Emitting Diode) display screen has the advantages of wide color gamut, low power consumption, lightness, thinness, and the like, and is widely applied to electronic devices. However, due to the materials and processes, the OLED display is prone to display mura due to low brightness and low gray scale.
If improve the minimum luminance with OLED display screen to avoid appearing showing uneven mura's problem, make the dazzling problem when electronic equipment appears using under the dark environment.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a method and an apparatus for adjusting brightness of a display screen.
According to a first aspect of the embodiments of the present disclosure, there is provided a method for adjusting brightness of a display screen, applied to an electronic device, the method including:
determining a target brightness of a display screen;
when the target brightness is lower than a brightness adjustment threshold, adjusting the brightness of the display screen to be first brightness, wherein the first brightness is larger than the brightness adjustment threshold;
and closing part of display sub-pixels of the display screen by adopting a preset adjusting mode, wherein the part of display sub-pixels are distributed in the display screen in a symmetrical mode.
In a possible implementation manner, the turning off a part of display sub-pixels of the display screen by using a preset adjustment manner includes:
determining the proportional relation between the first brightness and the target brightness;
and closing part of display sub-pixels of the display screen in a preset adjusting mode according to the proportional relation between the first brightness and the target brightness.
In one possible implementation manner, when the target brightness is lower than a brightness adjustment threshold, before adjusting the brightness of the display screen to a first brightness, the method further includes:
and determining that the first brightness is N times of the target brightness, wherein N is the ratio of the number of all display sub-pixels to the number of partial display sub-pixels to be turned off. In one possible implementation, the partial display sub-pixels are distributed symmetrically in the display screen, and the method includes:
the partial display sub-pixels are distributed in the display screen in an interlaced mode;
or, the partial display sub-pixels are distributed in the display screen in a spaced column;
or, the partial display sub-pixels are distributed in a zigzag manner in the display screen.
In a possible implementation manner, the turning off a part of display sub-pixels of the display screen by using a preset adjustment manner includes:
alternately turning off part of the display sub-pixels of the display screen in at least two adjustment modes according to a specified time interval,
and the partial display sub-pixels corresponding to the at least two adjustment modes are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the at least two adjustment modes in the display screen are the same.
In a possible implementation manner, the turning off a part of display sub-pixels of the display screen by using a preset adjustment manner includes:
when the last target brightness is lower than the brightness adjustment threshold value, closing a first adjustment mode adopted by part of display sub-pixels of the display screen;
closing part of display sub-pixels of the display screen in a second adjusting mode;
and the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode in the display screen are the same.
In one possible implementation, the display screen is an OLED display screen.
According to a second aspect of the present disclosure, there is provided a brightness adjustment device for a display screen, applied to an electronic device, the device including:
the determining module is used for determining the target brightness of the display screen;
the adjusting module is used for adjusting the display screen to first brightness when the target brightness is lower than a brightness adjusting threshold value, wherein the first brightness is larger than the brightness adjusting threshold value;
and the closing module is used for closing part of the display sub-pixels of the display screen in a preset adjusting mode, and the part of the display sub-pixels are distributed in the display screen in a symmetrical mode.
In one possible implementation, the shutdown module includes:
the first determining submodule is used for determining the proportional relation between the first brightness and the target brightness;
and the first closing sub-module is used for closing part of display sub-pixels of the display screen in a preset adjusting mode according to the proportional relation between the first brightness and the target brightness.
In one possible implementation manner, the adjusting module includes:
and the second determining sub-module is used for determining that the first brightness is N times of the target brightness, wherein N is the ratio of the number of all display sub-pixels to the number of partial display sub-pixels to be closed. In one possible implementation, the partial display sub-pixels are distributed symmetrically in the display screen, and the method includes:
the partial display sub-pixels are distributed in the display screen in an interlaced mode;
or, the partial display sub-pixels are distributed in the display screen in a spaced column;
or, the partial display sub-pixels are distributed in a zigzag manner in the display screen.
In one possible implementation, the shutdown module includes:
a second closing sub-module for alternately closing a part of the display sub-pixels of the display screen in at least two adjustment modes according to a specified time interval,
and the partial display sub-pixels corresponding to the at least two adjustment modes are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the at least two adjustment modes in the display screen are the same.
In one possible implementation, the shutdown module includes:
the third determining sub-module is used for determining a first adjusting mode adopted by part of display sub-pixels of the display screen when the last target brightness is lower than the brightness adjusting threshold range;
the third closing sub-module is used for closing part of display sub-pixels of the display screen in a second adjusting mode;
and the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode in the display screen are the same.
In one possible implementation, the display screen is an OLED display screen.
According to another aspect of the present disclosure, there is provided a brightness adjustment apparatus of a display screen, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the above method.
According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by a processor, implement the above-described method.
In this way, the electronic device may determine the target brightness of the display screen, adjust the display screen to the first brightness when the target brightness of the display screen is lower than the brightness adjustment threshold, and close a part of display sub-pixels of the display screen in a preset adjustment manner, where the part of display sub-pixels are distributed symmetrically in the display screen. According to the method and the device for adjusting the brightness of the display screen, provided by the embodiment of the disclosure, the electronic device can reduce the brightness displayed by the display screen by closing part of the display sub-pixels, so that the problem that the display screen is prone to display uneven mura under the conditions of low brightness and low gray scale can be avoided, and the problem that the electronic device is dazzling when used in a dark environment can be relieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow chart illustrating a method for adjusting brightness of a display screen according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating a method for adjusting brightness of a display screen according to an exemplary embodiment;
FIG. 3 shows a schematic diagram of an exemplary display screen according to the present disclosure;
FIG. 4 shows a schematic diagram of an exemplary display screen according to the present disclosure;
FIG. 5a shows a schematic view of an exemplary display screen according to the present disclosure;
FIG. 5b shows a schematic view of an exemplary display screen according to the present disclosure;
FIG. 6 is a flow chart illustrating a method for adjusting brightness of a display screen according to an exemplary embodiment;
fig. 7 is a block diagram illustrating a structure of a brightness adjustment apparatus of a display screen according to an exemplary embodiment;
fig. 8 is a block diagram illustrating a structure of a brightness adjustment apparatus of a display screen according to an exemplary embodiment;
fig. 9 is a block diagram illustrating an apparatus 1500 for brightness adjustment of a display screen according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a flowchart illustrating a brightness adjustment method for a display screen according to an exemplary embodiment, where the method may be applied to an electronic device, and the electronic device may be, for example, a terminal device such as a mobile phone and a tablet computer. As shown in fig. 1, the method may include:
in step 101, a target brightness of a display screen is determined.
For example, the electronic device may determine a target brightness of the display screen according to the light intensity of the current environment, where the target brightness may be a brightness to be adjusted by the electronic device; alternatively, the electronic device may determine the target brightness of the display screen in response to a user's setting operation for the brightness of the display screen. The electronic device may adjust the brightness of the display screen according to the target brightness, for example: the display screen may be brought to the determined target brightness.
In step 102, when the target brightness is lower than a brightness adjustment threshold, the brightness of the display screen is adjusted to a first brightness, and the first brightness is greater than the brightness adjustment threshold.
The brightness adjustment threshold may be a preset brightness value.
For example, the brightness that is likely to cause the display screen to display uneven mura may be used as the brightness adjustment threshold. For example: when the brightness of the display screen is 1.8 nits and less than 1.8 nits, the phenomenon of uneven mura is easy to occur, and the brightness adjustment threshold value can be set to 1.8 nits.
For example, the first brightness may be a preset smaller brightness value, and the first brightness is not likely to cause the display screen to display uneven mura. Alternatively, the first brightness may be a preset multiple of the target brightness, for example: at 2 times the target brightness, the first brightness may be determined to be 3 nits at a target brightness of 1.5 nits.
For example, if the brightness adjustment threshold is 1.8 nits, the electronic device may adjust the brightness of the display screen to a first brightness (e.g., 3 nits) when the target brightness of the display screen is determined to be 1.5 nits.
In a possible implementation manner, in step 102, when the target brightness is lower than the brightness adjustment threshold, before adjusting the brightness of the display screen to the first brightness, the method may include:
and determining that the first brightness is N times of the target brightness, wherein N is the ratio of the number of all display sub-pixels to the number of partial display sub-pixels to be turned off.
For example, assuming that N is 2, when the target brightness is 1.5 nits, the first brightness may be determined to be 3 nits, and the electronic device may adjust the brightness of the display screen to 3 nits, and turn off 50% of the display sub-pixels by using a preset adjustment manner, where the 50% of the display sub-pixels are symmetrically distributed in the display screen.
In step 103, a preset adjustment mode is adopted to close part of the display sub-pixels of the display screen, and the part of the display sub-pixels are distributed in the display screen in a symmetrical mode.
The electronic equipment determines the target brightness of the display screen, and if the target brightness is lower than the brightness adjustment threshold, the brightness of the display screen can be adjusted to be the first brightness, and part of display sub-pixels of the display screen can be closed by adopting a preset adjustment mode. Generally, each pixel of the liquid crystal panel is composed of three primary colors of red, blue, green (RGB), and each color of each pixel is called a "sub-pixel". Each sub-pixel can be independently controlled to be turned on or off.
The preset adjustment mode may specify a portion of the display sub-pixels to be turned off, and the portion of the display sub-pixels are distributed symmetrically in the display screen. For example, the electronic device may determine a partial display sub-pixel to be turned off according to a preset adjustment manner, and may achieve the purpose of turning off the partial display sub-pixel to be turned off by controlling an electrical signal (current or voltage) flowing to the partial display sub-pixel to be turned off, for example: the electrical signal to the partial display sub-pixel to be turned off is reduced.
When the target brightness of the display screen is lower than the brightness adjustment threshold value, the electronic equipment can adopt a preset adjustment mode to close part of display sub-pixels of the display screen, and only the rest part of display sub-pixels of the display screen normally work at the moment to generate brightness, so that the brightness displayed by the whole display screen can be reduced.
Fig. 2 is a flowchart illustrating a brightness adjustment method of a display screen according to an exemplary embodiment.
In one possible implementation, referring to fig. 2, the step 103 may include: step 1031 and step 1032.
In step 1031, determining a proportional relationship between the first brightness and the target brightness;
in step 1032, a preset adjustment mode is adopted to close part of the display sub-pixels of the display screen according to the proportional relation between the first brightness and the target brightness.
For example, the electronic device may determine a ratio of the first luminance to the target luminance, and the electronic device may determine the number of the display sub-pixels to be turned off in the display screen according to the ratio, where the ratio of all the sub-pixels of the display screen to the part of the display sub-pixels to be turned off may be the ratio of the first luminance to the target luminance, and the part of the display sub-pixels may be turned off in the display screen by using a preset adjustment manner.
Or, the electronic device may determine a ratio of the target luminance to the first luminance, and the electronic device may determine the number of the display sub-pixels to be turned off in the display screen according to the ratio, where the ratio of a part of the display sub-pixels to be turned off to all the sub-pixels of the display screen may be the ratio of the target luminance to the first luminance, and the part of the display sub-pixels may be determined in the display screen by using a preset adjustment mode.
For example, assuming that the first brightness is set to be 3 nits, when the target brightness is 1.5 nits, the electronic device may adjust the brightness of the display screen to be 3 nits, and the electronic device may determine that 50% of the display sub-pixels need to be turned off according to a first ratio of the target brightness to the first brightness, and may turn off 50% of the display sub-pixels according to a preset adjustment manner. Therefore, the electronic device can determine the target brightness of the display screen, adjust the display screen to the first brightness when the target brightness of the display screen is the first brightness adjustment threshold, and close part of display sub-pixels of the display screen by adopting a preset adjustment mode, wherein the part of display sub-pixels are distributed in the display screen in a symmetrical mode. According to the brightness adjusting method of the display screen provided by the embodiment of the disclosure, the electronic device can reduce the brightness displayed by the display screen by turning off part of the display sub-pixels, so that the problem that the display screen is prone to display uneven mura under the conditions of low brightness and low gray scale can be avoided, and the problem that the electronic device is dazzling when used in a dark environment can be relieved.
In a possible implementation manner, the display screen may be an OLED display screen.
In a possible implementation manner, the partial display sub-pixels are distributed in a symmetrical manner in the display screen, and the distributing may include:
the partial display sub-pixels are distributed in the display screen in an interlaced mode;
or, the partial display sub-pixels are distributed in the display screen in a spaced column;
or, the partial display sub-pixels are distributed in a zigzag manner in the display screen.
FIG. 3 shows a schematic diagram of an exemplary display screen according to the present disclosure; FIG. 4 shows a schematic diagram of an exemplary display screen according to the present disclosure; FIG. 5a shows a schematic view of an exemplary display screen according to the present disclosure; FIG. 5b shows a schematic diagram of an exemplary display screen according to the present disclosure.
For example, assume that the brightness adjustment threshold of the display screen is 1.8 nits and the first brightness is 3 nits. The electronic device determines that the target brightness of the display screen is 1.5 nits, then the electronic device can adjust the brightness of the display screen to 3 nits and close part of display sub-pixels of the display screen according to a preset adjusting mode, wherein the distribution state of the part of display sub-pixels in the display screen can be determined according to the number of the part of display sub-pixels to be closed.
The partial display sub-pixels may be distributed in the display screen in an interlaced manner, wherein how many rows of sub-pixels are turned off every how many rows of display sub-pixels are determined according to the number of the partial display sub-pixels to be turned off. For example: when 50% of the display sub-pixels are turned off, every other row of the display sub-pixels can be turned off; alternatively, the sub-pixels may be displayed every two rows, and the sub-pixels may be displayed in two rows, referring to fig. 3 (only a partial area of the display screen is shown in the figure).
Alternatively, the partial display sub-pixels may be distributed in alternate columns in the display screen, wherein how many columns of display sub-pixels are turned off every other columns of display sub-pixels may be determined according to the number of the partial display sub-pixels to be turned off. For example: when 50% of the display sub-pixels are closed, every other column of display sub-pixels can be closed; alternatively, the subpixels may be displayed every two columns and the subpixels may be displayed in two columns, as shown in fig. 3.
Alternatively, the partial display sub-pixels may be distributed in a zigzag manner in the display screen, wherein the zigzag distribution state of the partial display sub-pixels in the display screen may be determined according to the number of the partial display sub-pixels to be turned off, for example: when 50% of the display sub-pixels are turned off, each sawtooth occupies 3 rows (3 columns) of the display sub-pixels in the sawtooth distribution presented by the partial display sub-pixels, see fig. 5 a; alternatively, each sawtooth may occupy more than 5 rows (5 columns) or 5 rows (5 columns) of display sub-pixels, see fig. 5 b.
It should be noted that the interlaced distribution, and the zigzag distribution are only examples of the distribution state of the partial display sub-pixels in the display screen in the embodiment of the present disclosure, and are not limited to the distribution state of the partial display sub-pixels in the display screen, and actually, any distribution state with symmetrical distribution may be adopted, for example: distributed in a circular ring shape. The distribution state of the closed partial display sub-pixels in the display screen is not particularly limited in the embodiments of the present disclosure.
In a possible implementation manner, in step 102, turning off a part of the display sub-pixels of the display screen in a preset adjustment manner may include:
alternately turning off part of the display sub-pixels of the display screen in at least two adjustment modes according to a specified time interval,
and the partial display sub-pixels corresponding to the at least two adjustment modes are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the at least two adjustment modes in the display screen are the same.
The predetermined time interval may be a preset time interval, and the electronic device may change the preset adjustment mode of the display screen at each predetermined time interval, for example, from the first adjustment mode to the second adjustment mode, and after the predetermined time interval, change the second adjustment mode to the first adjustment mode again, or change the second adjustment mode to the third adjustment mode. The partial display sub-pixels of the first adjusting mode, the second adjusting mode and the third adjusting mode which are closed are not completely the same, but are distributed in the same state in the display screen. The present disclosure takes as an example that the first adjustment mode and the second adjustment mode are alternately adopted at specified time intervals to turn off part of the display sub-pixels of the display screen.
For example, when the proportion of the partial display sub-pixels to be turned off in the display screen is less than or equal to 50%, the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode may be completely different. For example: when 50% of the display sub-pixels are turned off, the first adjustment mode turns off the display sub-pixels in the odd columns (the display sub-pixels in the 1 st, 3 rd and 5 … … 2n-1 st columns), and the second adjustment mode turns off the display sub-pixels in the even columns (the display sub-pixels in the 2 nd, 4 th and 6 … … 2n th columns), wherein n is a positive integer. Assuming that the brightness adjustment threshold of the display screen is 1.8 nits, the first brightness is 3 nits, and assuming that the specified time interval is 5s, when determining that the current target brightness of the display screen is 1.5 nits, the electronic device may adjust the brightness of the display screen to 3 nits, turn off the display sub-pixels in the 1 st, 3 rd, and 5 … … 2n-1 st columns in the first adjustment manner, recover the display sub-pixels in the 1 st, 3 rd, and 5 … … 2n-1 st columns after 5s, turn off the display sub-pixels in the 2 nd, 4 th, and 6 … … 2n th columns in the second adjustment manner, and so on, turn off some display sub-pixels of the display screen in the first adjustment manner and the second adjustment manner alternately every 5 s.
For example, when the proportion of the partial display sub-pixels to be turned off in the display screen is greater than 50%, the partial display sub-pixels corresponding to the first adjustment mode may intersect with the partial display sub-pixels corresponding to the second adjustment mode. In a possible implementation manner, a first adjustment manner and a second adjustment manner with minimum intersection of partial display sub-pixels may be adopted.
In fact, the first adjustment manner and the second adjustment manner may be a manner of turning off some of the display sub-pixels in an interlaced distribution state, or turning off some of the display sub-pixels in a zigzag distribution state, and the like, which is not limited in this disclosure.
Therefore, according to the brightness adjustment method of the display screen provided by the embodiment of the disclosure, on one hand, the brightness displayed by the display screen can be reduced by closing part of the display sub-pixels, so that the problem that the display screen is prone to display uneven mura under the conditions of low brightness and low gray scale can be avoided, and the problem that electronic equipment is dazzling when used in a dark environment can be relieved. On the other hand, the loss of the display sub-pixels can be reduced, and the service life of the display sub-pixels can be prolonged.
Fig. 6 is a flowchart illustrating a brightness adjustment method of a display screen according to an exemplary embodiment.
In a possible implementation manner, referring to fig. 6, in step 103, turning off a part of display sub-pixels of the display screen in a preset adjustment manner may include:
and 1033, when the last target brightness is determined to be lower than the brightness adjustment threshold, closing the first adjustment mode adopted by part of the display sub-pixels of the display screen.
And 1034, closing part of the display sub-pixels of the display screen by adopting a second adjustment mode.
And the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode in the display screen are the same.
The partial display sub-pixels of the first adjustment mode and the partial display sub-pixels of the second adjustment mode are not completely the same, but are distributed in the same state in the display screen, for example: the first adjustment mode and the second adjustment mode both adopt a mode of closing a row of display sub-pixels every other row of display sub-pixels, namely, the closed part of the display sub-pixels are distributed in alternate rows in the display screen, wherein the first adjustment mode closes the display sub-pixels in odd rows, and the second adjustment mode closes the display sub-pixels in even rows.
When the target brightness of the display screen is lower than the brightness adjustment threshold, the electronic device may determine a manner in which the electronic device turns off a part of the display sub-pixels of the display screen when the target brightness of the display screen is lower than the brightness adjustment threshold last time, and may determine that the manner is the first adjustment manner. The electronic device may currently determine that another way different from the first way is the second way, and turn off part of the display sub-pixels in the second way.
Illustratively, when 50% of the display sub-pixels are turned off, the first adjustment manner turns off the display sub-pixels of the 1 st, 3 rd and 5 … … 2n-1 st columns, and the second adjustment manner turns off the display sub-pixels of the 2 nd, 4 th and 6 … … 2n th columns, wherein n is a positive integer. Assume that the brightness adjustment threshold of the display screen is 1.8 nits and the first brightness is 3 nits. The electronic device may adjust the brightness of the display screen to 3 nits when determining that the current target brightness of the display screen is 1.5 nits, and determine a manner in which the electronic device turns off some of the display sub-pixels of the display screen when the previous target brightness is lower than the brightness adjustment threshold range, and assuming that the electronic device turns off the display sub-pixels in the 1 st, 3 rd, and 5 … … 2n-1 th columns in the first adjustment manner, the electronic device may turn off the display sub-pixels in the 2 nd, 4 th, and 6 … … 2n th columns in the second adjustment manner.
In fact, the first adjustment manner and the second adjustment manner may also be a manner of turning off some of the display sub-pixels in an interlaced distribution state, or turning off some of the display sub-pixels in a zigzag distribution state, and the like, which is not limited in this embodiment of the disclosure.
Therefore, according to the brightness adjustment method of the display screen provided by the embodiment of the disclosure, on one hand, the brightness displayed by the display screen can be reduced by closing part of the display sub-pixels, so that the problem that the display screen is prone to display uneven mura under the conditions of low brightness and low gray scale can be avoided, and the problem that electronic equipment is dazzling when used in a dark environment can be relieved. On the other hand, the loss of the display sub-pixels can be reduced, and the service life of the display sub-pixels can be prolonged.
Fig. 7 is a block diagram illustrating a structure of a brightness adjustment apparatus for a display screen, which may be applied to an electronic device, according to an exemplary embodiment, and as shown in fig. 7, the apparatus may include: a determination module 701, an adjustment module 702, and a shutdown module 703.
The determination module 701 is configured to determine a target brightness of the display screen;
the adjusting module 702 is configured to adjust the brightness of the display screen to a first brightness when the target brightness is lower than a brightness adjustment threshold, the first brightness being greater than the brightness adjustment threshold;
the turning-off module 703 is configured to turn off a part of the display sub-pixels of the display screen in a preset adjustment manner, where the part of the display sub-pixels are distributed symmetrically in the display screen.
In this way, the electronic device may determine the target brightness of the display screen, adjust the brightness of the display screen to the first brightness when the target brightness of the display screen is lower than the brightness adjustment threshold, and turn off a part of display sub-pixels of the display screen in a preset adjustment manner, where the part of display sub-pixels are distributed symmetrically in the display screen. According to the brightness adjusting device of the display screen provided by the embodiment of the disclosure, the electronic equipment can reduce the brightness displayed by the display screen by closing part of the display sub-pixels, so that the problem that the display screen is prone to display uneven mura under the conditions of low brightness and low gray scale can be avoided, and the problem that the electronic equipment is dazzling when used in a dark environment can be relieved.
Fig. 8 is a block diagram illustrating a structure of a brightness adjustment apparatus of a display screen according to an exemplary embodiment.
In a possible implementation manner, referring to fig. 8, the closing module 703 may include: a first determination sub-module 7031 and a first closing sub-module 7032.
The first determination sub-module 7031 is configured to determine a proportional relationship of the first luminance to the target luminance;
the first closing sub-module 7032 is configured to close a part of the display sub-pixels of the display screen in a preset adjustment manner according to a proportional relationship between the first luminance and the target luminance.
In a possible implementation manner, the adjusting module 702 may include: a second determination sub-module 7021.
The second determining sub-module 7021 is configured to determine the first luminance to be N times the target luminance, where N is a ratio of the number of full display sub-pixels to the number of partial display sub-pixels to be turned off. In a possible implementation manner, the partial display sub-pixels are distributed in a symmetrical manner in the display screen, and the distributing may include:
the partial display sub-pixels are distributed in the display screen in an interlaced mode;
or, the partial display sub-pixels are distributed in the display screen in a spaced column;
or, the partial display sub-pixels are distributed in a zigzag manner in the display screen.
In a possible implementation manner, referring to fig. 8, the closing module 703 may include: a second shutdown sub-module 7033.
Wherein the second turning-off submodule 7033 is configured to turn off part of the display sub-pixels of the display screen alternately in at least two adjustment modes according to a specified time interval,
and the partial display sub-pixels corresponding to the at least two adjustment modes are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the at least two adjustment modes in the display screen are the same.
In a possible implementation manner, referring to fig. 8, the closing module 703 may include: a third determination sub-module 7034 and a third closing sub-module 7035.
The third determining sub-module 7034 is configured to determine a first adjustment manner used for turning off a part of the display sub-pixels of the display screen when the target brightness is lower than the brightness adjustment threshold last time;
the third turning-off sub-module 7035 is configured to turn off a part of the display sub-pixels of the display screen in the second adjustment manner;
and the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode in the display screen are the same.
In one possible implementation, the display screen is an OLED display screen.
Fig. 9 is a block diagram illustrating an apparatus 1500 for brightness adjustment of a display screen according to an example embodiment. For example, the apparatus 1500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 9, the apparatus 1500 may include one or more of the following components: processing components 1502, memory 1504, power components 1506, multimedia components 1508, audio components 1510, input/output (I/O) interfaces 1512, sensor components 1514, and communication components 1516.
The processing component 1502 generally controls overall operation of the device 1500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 1502 may include one or more processors 1520 executing instructions to perform all or a portion of the steps of the methods described above. Further, processing component 1502 may include one or more modules that facilitate interaction between processing component 1502 and other components. For example, processing component 1502 may include a multimedia module to facilitate interaction between multimedia component 1508 and processing component 1502.
The memory 1504 is configured to store various types of data to support operations at the apparatus 1500. Examples of such data include instructions for any application or method operating on the device 1500, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1504 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 power supply component 1506 provides power to the various components of the device 1500. The power supply components 1506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 800.
The multimedia component 1508 includes a screen that provides an output interface between the device 1500 and a 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, multimedia component 1508 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 apparatus 1500 is in an operation mode, such as a shooting 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 1510 is configured to output and/or input audio signals. For example, the audio component 1510 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 1500 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 1504 or transmitted via the communication component 1516. In some embodiments, audio component 1510 also includes a speaker for outputting audio signals.
The I/O interface 1512 provides an interface between the processing component 1502 and peripheral interface modules, which can 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 1514 includes one or more sensors for providing status assessment of various aspects of the apparatus 1500. For example, the sensor assembly 1514 can detect an open/closed state of the device 1500, the relative positioning of components, such as a display and keypad of the device 1500, the sensor assembly 1514 can also detect a change in position of the device 1500 or a component of the device 1500, the presence or absence of user contact with the device 1500, orientation or acceleration/deceleration of the device 1500, and a change in temperature of the device 1500. The sensor assembly 1514 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1514 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 1514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 1516 is configured to facilitate wired or wireless communication between the apparatus 1500 and other devices. The apparatus 1500 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 component 1516 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1516 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 apparatus 1500 may 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 1504 comprising instructions, executable by the processor 1520 of the apparatus 1500 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.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (16)
1. A brightness adjustment method of a display screen is applied to electronic equipment, and the method comprises the following steps:
determining a target brightness of a display screen;
when the target brightness is lower than a brightness adjustment threshold, adjusting the brightness of the display screen to be first brightness, wherein the first brightness is larger than the brightness adjustment threshold;
and closing part of display sub-pixels of the display screen by adopting a preset adjusting mode, wherein the part of display sub-pixels are distributed in the display screen in a symmetrical mode.
2. The method of claim 1, wherein turning off some of the display sub-pixels of the display screen in the preset adjustment mode comprises:
determining the proportional relation between the first brightness and the target brightness;
and closing part of display sub-pixels of the display screen in a preset adjusting mode according to the proportional relation between the first brightness and the target brightness.
3. The method of claim 1, wherein adjusting the brightness of the display screen to a first brightness before the target brightness is lower than a brightness adjustment threshold, further comprises:
and determining that the first brightness is N times of the target brightness, wherein N is the ratio of the number of all display sub-pixels to the number of partial display sub-pixels to be turned off.
4. A method according to any one of claims 1 to 3, wherein the partial display sub-pixels are distributed symmetrically in the display screen, comprising:
the partial display sub-pixels are distributed in the display screen in an interlaced mode;
or, the partial display sub-pixels are distributed in the display screen in a spaced column;
or, the partial display sub-pixels are distributed in a zigzag manner in the display screen.
5. The method according to any one of claims 1 to 3, wherein the turning off the partial display sub-pixels of the display screen in the preset adjustment mode comprises:
alternately turning off part of the display sub-pixels of the display screen in at least two adjustment modes according to a specified time interval,
and the partial display sub-pixels corresponding to the at least two adjustment modes are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the at least two adjustment modes in the display screen are the same.
6. The method according to any one of claims 1 to 3, wherein the turning off the partial display sub-pixels of the display screen in the preset adjustment mode comprises:
when the last target brightness is lower than the brightness adjustment threshold value, closing a first adjustment mode adopted by part of display sub-pixels of the display screen;
closing part of display sub-pixels of the display screen in a second adjusting mode;
and the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode in the display screen are the same.
7. The method according to any one of claims 1 to 3, wherein the display screen is an OLED display screen.
8. A brightness adjusting device of a display screen is applied to electronic equipment, and the device comprises:
the determining module is used for determining the target brightness of the display screen;
the adjusting module is used for adjusting the brightness of the display screen to be first brightness when the target brightness is lower than a brightness adjusting threshold, and the first brightness is larger than the brightness adjusting threshold;
and the closing module is used for closing part of the display sub-pixels of the display screen in a preset adjusting mode, and the part of the display sub-pixels are distributed in the display screen in a symmetrical mode.
9. The apparatus of claim 8, wherein the shutdown module comprises:
the first determining submodule is used for determining the proportional relation between the first brightness and the target brightness;
and the first closing sub-module is used for closing part of display sub-pixels of the display screen in a preset adjusting mode according to the proportional relation between the first brightness and the target brightness.
10. The apparatus of claim 8, wherein the adjustment module comprises:
and the second determining sub-module is used for determining that the first brightness is N times of the target brightness, wherein N is the ratio of the number of all display sub-pixels to the number of partial display sub-pixels to be closed.
11. The device according to any one of claims 8 to 10, wherein the partial display sub-pixels are symmetrically distributed in the display screen, and the device comprises:
the partial display sub-pixels are distributed in the display screen in an interlaced mode;
or, the partial display sub-pixels are distributed in the display screen in a spaced column;
or, the partial display sub-pixels are distributed in a zigzag manner in the display screen.
12. The apparatus of any one of claims 8 to 10, wherein the shutdown module comprises:
a second closing sub-module for alternately closing a part of the display sub-pixels of the display screen in at least two adjustment modes according to a specified time interval,
and the partial display sub-pixels corresponding to the at least two adjustment modes are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the at least two adjustment modes in the display screen are the same.
13. The apparatus of any one of claims 8 to 10, wherein the shutdown module comprises:
the third determining submodule is used for determining a first adjusting mode adopted by part of display sub-pixels of the display screen when the last target brightness is lower than the brightness adjusting threshold;
the third closing sub-module is used for closing part of display sub-pixels of the display screen in a second adjusting mode;
and the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode are not completely the same, and the distribution states of the partial display sub-pixels corresponding to the first adjustment mode and the partial display sub-pixels corresponding to the second adjustment mode in the display screen are the same.
14. The device according to any one of claims 8 to 10, wherein the display screen is an OLED display screen.
15. A brightness adjustment device for a display screen, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the method of any one of claims 1 to 7.
16. A non-transitory computer readable storage medium having instructions therein which, when executed by a processor, enable the processor to perform the method of any one of claims 1 to 7.
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| CN111785198A (en) * | 2020-06-30 | 2020-10-16 | 联想(北京)有限公司 | Display screen, state control method and device |
| CN111899690B (en) * | 2020-08-18 | 2021-10-15 | 昇显微电子(苏州)有限公司 | Method and device for improving low-brightness Mura |
| CN112150969A (en) * | 2020-08-26 | 2020-12-29 | 昆山国显光电有限公司 | Display method and control circuit of display panel |
| CN113593495B (en) * | 2021-07-23 | 2022-11-15 | 北京字节跳动网络技术有限公司 | Calibration method and device and electronic equipment |
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