CN113140195A

CN113140195A - Display screen brightness adjusting method and device, electronic equipment and storage medium

Info

Publication number: CN113140195A
Application number: CN202010058872.9A
Authority: CN
Inventors: 吴仓志
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2021-07-20
Anticipated expiration: 2040-01-19
Also published as: CN113140195B

Abstract

The disclosure relates to a display screen brightness adjusting method and device, electronic equipment and a storage medium, and belongs to the technical field of display screens. The display screen brightness adjusting method is applied to electronic equipment with a folding screen, and the folding screen comprises a first screen and a second screen. The method comprises the following steps: determining a normally bright screen in the first screen and the second screen; acquiring a brightness attenuation parameter of the normally bright screen according to the expected display brightness and the display time when each frame of image is displayed on the normally bright screen; and regulating and controlling the actual display brightness of the normally-bright screen according to the brightness attenuation parameter so as to enable the difference of the actual display brightness of the first screen and the second screen to be within a set range.

Description

Display screen brightness adjusting method and device, electronic equipment and storage medium

Technical Field

The present disclosure relates to the field of light intensity detection technologies, and in particular, to a method and an apparatus for adjusting brightness of a display screen, an electronic device, and a storage medium.

Background

With the development of flexible display screens, foldable screens have become the development trend of electronic devices. Based on the deformation performance of the folding screen, the electronic equipment can realize two use states of a folding state and an unfolding state.

In the related art, when the folding screen is used in a folded state, a portion facing a user is enabled to display an image, and a portion facing away from the user is disabled. However, as the time of use accumulates, the degree of loss of the light emitting device in the frequently-enabled portion is greater than that in the less frequently-enabled portion in the folded screen. Therefore, when the folding screen is enabled in the unfolded state, the actual display brightness of different parts of the folding screen is different, and the user experience is influenced.

Disclosure of Invention

The present disclosure provides a display screen brightness adjusting method and apparatus, an electronic device, and a storage medium, to solve the deficiencies of the related art.

In a first aspect, the disclosed embodiments provide a display screen brightness adjustment method, which is applied to an electronic device having a foldable screen, where the foldable screen includes a first screen and a second screen; the method comprises the following steps:

determining a normally-bright screen in the first screen and the second screen;

acquiring a brightness attenuation parameter of the normally-bright screen according to the expected display brightness and the display time when each frame of image is displayed on the normally-bright screen;

and regulating and controlling the actual display brightness of the normally-bright screen according to the brightness attenuation parameter so as to enable the difference of the actual display brightness of the first screen and the second screen to be within a set range.

In one embodiment, the determining a normally-bright screen in the first screen and the second screen includes:

and respectively counting the total frame number of the display images of the first screen and the second screen, and taking the maximum total frame number of the display images in the first screen and the second screen as the normally-bright screen.

In one embodiment, the obtaining of the brightness attenuation parameter of the normally-bright screen according to the expected display brightness and display time when each frame of image is displayed by the normally-bright screen includes:

dividing the normally-bright screen into a plurality of regions, wherein one region comprises at least one sub-pixel;

and determining the brightness attenuation parameter of each region according to the expected display brightness and the display time when each frame of image is displayed in each region.

In one embodiment, the determining the brightness decay parameter of each region according to the expected display brightness and display time when each region displays each frame of image comprises:

counting the expected display brightness and the display time of the area when each frame of image is displayed to obtain the accumulated expected display brightness and the accumulated display time;

obtaining the display brightness of unit time according to the accumulated expected display brightness and the accumulated display time, and determining a target attenuation function in a prestored attenuation function group according to the display brightness of unit time, wherein the attenuation function represents the change relation of the attenuation parameter along with time;

and determining the brightness attenuation parameter according to the target attenuation function and the accumulated display time.

In one embodiment, the adjusting and controlling the actual display brightness of the normally-bright screen according to the brightness decay parameter includes:

determining a brightness compensation value of the region according to the brightness attenuation parameter of the region and the current expected display brightness;

determining parameters of driving signals of sub-pixels in the region according to the brightness compensation value;

and driving the sub-pixel in the area to enable through the driving signal.

In one embodiment, the working state of the folding screen comprises a folding state and an unfolding state;

the adjusting and controlling the actual display brightness of the normally-on screen according to the brightness attenuation parameter so that the difference between the actual display brightness of the first screen and the actual display brightness of the second screen is within a set range comprises:

and regulating and controlling the actual display brightness of the normally-bright screen according to the brightness attenuation parameter so that the difference of the actual display brightness of the first screen and the second screen in the unfolded state is within a set range.

In a second aspect, the disclosed embodiment provides a display screen brightness adjusting device, which is applied to an electronic device having a foldable screen, where the foldable screen includes at least a first screen and a second screen; the device comprises:

the determining module is used for determining a normally-bright screen in the first screen and the second screen;

the acquisition module is used for acquiring the brightness attenuation parameter of the normally-bright screen according to the expected display brightness and the display time when each frame of image is displayed on the normally-bright screen; and

and the brightness regulation and control module is used for regulating and controlling the actual display brightness of the normally-bright screen according to the brightness attenuation parameter so as to enable the difference between the actual display brightness of the first screen and the actual display brightness of the second screen to be within a set range.

In one embodiment, the determining module is specifically configured to:

In one embodiment, the obtaining module comprises:

the dividing unit is used for dividing the normally-bright screen into a plurality of areas, and each area comprises at least one sub-pixel; and

and the first determining unit is used for determining the brightness attenuation parameter of each region according to the expected display brightness and the display time when each region displays each frame of image.

In one embodiment, the first determination unit includes:

the statistical subunit is used for counting the expected display brightness and the display time when each frame of image is displayed in the region to obtain the accumulated expected display brightness and the accumulated display time;

the obtaining subunit is used for obtaining the display brightness of unit time according to the accumulated expected display brightness and the accumulated display time, and determining a target attenuation function in a prestored attenuation function group according to the display brightness of unit time, wherein the attenuation function represents the change relation of the attenuation parameter along with time; and

and the determining subunit determines the brightness attenuation parameter according to the target attenuation function and the accumulated display time.

In one embodiment, the brightness control module includes:

the second determining unit is used for determining a brightness compensation value of the area according to the brightness attenuation parameter of the area and the current expected display brightness;

a third determining unit, configured to determine a parameter of a driving signal of a sub-pixel in the region according to the brightness compensation value; and

and the driving unit is used for driving the sub-pixel in the area to be enabled through the driving signal.

the brightness adjusting module is specifically configured to: and regulating and controlling the actual display brightness of the normally-bright screen according to the brightness attenuation parameter so that the difference of the actual display brightness of the first screen and the second screen in the unfolded state is within a set range.

In a third aspect, an embodiment of the present disclosure provides an electronic device, including: a folding screen, a processor, and a memory;

the folding screen at least comprises a first screen and a second screen;

the memory stores the processor-executable instructions;

the processor is configured to execute the executable instructions in the memory to implement the steps of the method provided by the first aspect described above.

In a fourth aspect, the disclosed embodiments provide a readable storage medium, on which executable instructions are stored, and the executable instructions, when executed by a processor of an electronic device or a control chip of a folding screen, implement the steps of the method provided in the first aspect.

The technical scheme provided by the disclosure at least has the following beneficial effects:

the brightness attenuation parameter of the light-emitting device in the normally-bright screen is determined by counting the accumulated brightness and the accumulated display time of the normally-bright screen in the folded screen, and the actual display brightness of the normally-bright screen is regulated and controlled according to the brightness attenuation parameter. By adopting the mode, the actual display brightness of the normally-bright screen is determined based on the use loss degree of the normally-bright screen, so that the difference of the display effects of the first screen and the second screen of the folding screen is weakened, the display effect is optimized, and the user experience is improved.

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 and 2 are schematic views illustrating a use state of a folding screen according to various exemplary embodiments;

3-6 are flow diagrams illustrating display screen brightness adjustment methods according to various exemplary embodiments;

fig. 7 to 10 are block diagrams of display screen brightness adjustment apparatuses according to various exemplary embodiments;

FIG. 11 is a block diagram illustrating the structure of an electronic device in accordance with an exemplary 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 embodiments described in the following exemplary embodiments do not represent all embodiments 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.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this disclosure do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprises" or "comprising" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Fig. 1 and 2 are schematic structural diagrams of a folding screen in a folded state according to various exemplary embodiments. In one embodiment, as shown in fig. 1, 2, the folded screen 100 includes a first screen 110 and a second screen 120. Here, "first" and "second" merely indicate that the arrangement positions of the first screen and the second screen are different, and do not limit the specific number of the first screen 110 and the second screen 120.

Alternatively, as shown in fig. 1, the folding screen 100 includes a first screen 110 and a second screen 120. In the folded state, the first screen 110 faces upward or the second screen 120 faces upward.

Alternatively, as shown in fig. 2, the folding screen 100 includes one first screen 110, and two second screens 120 respectively positioned at both sides of the first screen 110. In the folded state, the first screen 110 faces upward, and the two second screens 120 face downward; alternatively, the first screen 110 is facing downward and the two second screens 120 are facing upward.

Based on the structure of the foldable screen shown in fig. 1 and 2, when a user holds the electronic device with the foldable screen, the first screen 110 faces upward for the user to view, and the second screen 120 faces the palm of the user. In this case, the folding screen using method provided in the related art is employed, resulting in the number of enabled times of the first screen 110 being greater than the number of enabled times of the second screen 120. As the usage time accumulates, the degree of deterioration of the light emitting devices in the first panel 110 is greater than that of the light emitting devices in the second panel 120. As such, a significant difference in the actual display brightness of the first screen 110 and the second screen 120 is caused, which affects the user experience.

Based on the above problem, the embodiments of the present disclosure provide a display screen brightness adjusting method, which is applied to an electronic device with a foldable screen. Wherein the structure of the folding screen comprises a first screen and a second screen (e.g. as shown in fig. 1 or fig. 2). Fig. 3 is a flowchart illustrating a method for adjusting brightness of a display screen according to an exemplary embodiment. As shown in fig. 3, the display screen brightness adjusting method includes:

step S101, determining a normally bright screen in the first screen and the second screen.

In one embodiment, step S101 specifically includes: and respectively counting the total frame number of the display images of the first screen and the second screen, and taking the maximum total frame number of the display images in the first screen and the second screen as a normally bright screen.

In the enabling state, the display screen loads a plurality of frames of images at a set frequency to realize display. Therefore, the total number of display image frames can represent the number of enabling times of the display screen. And the enabling times of different parts in the folding screen are different based on the folding state and the unfolding state of the folding screen. For example, as shown in fig. 1, when the foldable screen is in the folded state, the first screen 110 faces the user, so that the first screen 110 is used more frequently than the second screen 120. In such a case, the screen of the folded screen on which the total number of frames of the displayed image is the largest number of times of enablement, i.e., the normally-on screen.

In step S101, if the folded screen includes a plurality of first screens and a plurality of second screens, one of the plurality of first screens and the plurality of second screens, which has the largest total number of frames for image display, is used as a normally-bright screen of the folded screen.

Optionally, the control chip of the display screen records each time of driving data, and determines the total frame number of the display images of the first screen and the second screen according to the recorded driving data.

By adopting the method, the normally bright screen in the folding screen is determined by statistically analyzing the use habits of the user, so that the accuracy of the overall regulation and control method is ensured, and the user experience is optimized.

And S102, acquiring a brightness attenuation parameter of the normally-bright screen according to the expected display brightness and the display time when each frame of image is displayed on the normally-bright screen.

In the folded screen, the loss of the light-emitting devices (such as light-emitting quantum dots) in the normally-bright screen is the greatest because the normally-bright screen is enabled for the greatest number of times. Also, the desired display brightness and display time of the display screen both affect the degree of wear of the light emitting elements in the display screen. The desired display brightness is associated with displaying an image, and the light emitting devices in the display screen are driven by the driving parameters to display the image. The driving parameters include driving voltage, driving current, and the like. Thus, the desired display brightness of the display screen is reflective of the power of the light emitting devices in the display screen. In the embodiment of the disclosure, the attenuation parameter of the normally bright area can be accurately determined through two dimensions of the expected display brightness and the display time.

Fig. 4 is a flowchart illustrating step S102 according to an exemplary embodiment. In one embodiment, as shown in fig. 4, step S102 specifically includes:

step S1021, dividing the normally-bright screen into a plurality of regions, wherein one region comprises at least one sub-pixel.

The display screen comprises a plurality of pixel units, and one pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel. In step S1021, an area of the normally-on screen includes at least one sub-pixel. Also, the specific sub-pixel type in one region is not limited, and includes, for example, R, G, B at least two of the three sub-pixels. The dividing method in step S1021 is not particularly limited. Optionally, one region comprises one sub-pixel. This helps to improve the accuracy of subsequent brightness adjustments. Or, optionally, a region includes at least two sub-pixels (e.g., 2, 4, 8, 16, etc.). In this way, the amount of calculation is reduced, and the processing speed is improved.

Step S1022, determining the brightness decay parameter of each region according to the desired display brightness and display time when each region displays each frame image.

The brightness decay parameter of the normally bright screen is a data set including the brightness decay parameter for each region. Optionally, the brightness decay parameter is a brightness decay rate of the light emitting device, and represents a loss degree of the light emitting device. Because the expected display brightness and the display time when each frame of image is displayed in different areas may be different, the corresponding brightness attenuation parameter is determined for each area, and the loss degree of the light-emitting device in different areas of the normally bright screen can be reflected more accurately.

Fig. 5 is a flowchart illustrating step S1022 according to an exemplary embodiment. In an embodiment, as shown in fig. 5, for one of the regions, step S1022 specifically includes:

step S501, counting the expected display brightness and the display time of one region when each frame of image is displayed to obtain the accumulated expected display brightness and the accumulated display time.

Optionally, if one region includes a plurality of sub-pixels, the expected display luminance when each sub-pixel displays each frame of image is counted to obtain the accumulated expected display luminance, and the display time when each sub-pixel displays each frame of image is counted to obtain the accumulated display time.

It should be noted that, during the actual operation of the display screen, the actual display brightness of one area is difficult to measure. However, the desired display brightness for a region is related to the currently displayed image and may be recorded each time the display screen is displayed. In addition, the method provided by the embodiment of the disclosure can ensure that the actual display brightness of one area approaches to the expected display brightness. Therefore, the desired display luminance is adopted instead of the actual display luminance in step S501. In this way, the operability of the overall method is improved, and the accuracy of obtaining the brightness attenuation parameters through the subsequent steps is considered.

Step S502, obtaining the display brightness of unit time according to the accumulated expected display brightness and the accumulated display time, and determining a target attenuation function in a prestored attenuation function group according to the display brightness of unit time. The attenuation function represents the change relation of the brightness attenuation parameter along with time, and takes the brightness attenuation parameter as the brightness attenuation rate as an example, and the brightness attenuation rate is gradually increased along with the accumulation of time.

Since the desired display luminance of the light emitting device is different when each frame image is displayed, the desired display luminance of the image displayed one or more times cannot be used as a criterion for determining the attenuation parameter. In step S502, the display luminance per unit time is obtained by integrating the desired display luminance and the integrated display time. In this way, displaying an area at different desired display luminances for the integrated display time is equivalent to displaying the area at the display luminance per unit time for the same integrated time. Therefore, the display luminance per unit time can be used as the reference luminance for displaying the multi-frame image in the region. In this way, the brightness adjusting method is more scientific and reasonable, and the accuracy of the subsequent acquired attenuation parameters is optimized.

In the case where one region includes a plurality of sub-pixels, the display luminance per unit time of one region may be obtained by: the unit time display brightness of each sub-pixel in the area is acquired respectively, and the average value of the unit time display brightness of the plurality of sub-pixels is further used as the unit time display brightness of the area.

The decay function of the light emitting device is related to the material of the light emitting device and the display luminance per unit time.

First, the attenuation functions of different material light emitting devices are different. Take a light emitting device as an example. Diodes are made of various materials, such as gallium arsenide diodes, gallium phosphide diodes, gallium nitride diodes, and the like. Based on the performance difference of the diode material, the brightness attenuation parameters of the diodes made of different materials have different change rules along with the use time. That is, diodes of different materials have different attenuation functions.

Secondly, the light emitting devices made of the same material display luminance luminescence in different unit time, and the attenuation functions of the light emitting devices are different.

Take the example of representing the light emitting parameters of the light emitting device by using YUV values (a color coding method, coding different colors by a brightness value and a chromatic value). The luminance decay parameter change when the light emitting device emits light with a display luminance of 5 per unit time is slower than the luminance decay parameter change when the light emitting device emits light with a display luminance of 200 per unit time within a certain period of time. In other words, the light emitting devices display luminance emission at different unit times, and the luminance decay parameters of the light emitting devices vary with time. Specifically, the higher the display luminance per unit time of the light emitting device is, the faster the luminance decay parameter changes; the lower the display luminance per unit time of the light emitting device, the slower the luminance decay parameter changes.

In the embodiment of the present disclosure, in the case where the display luminance of the light emitting device or the combination of light emitting devices at different unit times is the desired display luminance, the attenuation function group is obtained by counting the ratio of the actual light emission to the display luminance at the unit time. Wherein, one light emitting device is a sub-pixel in the display screen. One light emitting device assembly is composed of all sub-pixels in one area of a normally-on screen. For example, one light emitting device combination includes R, G, B sub-pixels of at least two kinds. The manner of obtaining the set of attenuation functions is described in detail below by two embodiments.

In the first embodiment, a correspondence table of the display luminance per unit time and the attenuation parameter as shown in table 1 may be obtained for a light emitting device of a set material or a combination of light emitting devices of different materials.

TABLE 1

Display brightness per unit time	Attenuation function
		0	Attenuation function 1
1	Attenuation function 2
		……	……
255	Attenuation function 256

The decay function corresponding to the display luminance per unit time in table 1 is determined by:

firstly, actual light emitting brightness of the light emitting device at different time is obtained through detection. For example, the actual light emission luminance of the light emitting device is detected using a luminance meter. For a combination of light emitting devices, the actual light emission luminance is the ratio of the sum of the actual light emission luminances of each light emitting device in the combination to the number of light emitting devices.

And secondly, obtaining a brightness attenuation parameter according to the actual brightness of the light emitting device or the combination of the light emitting devices and the display brightness in unit time. For example, the luminance decay parameter is a luminance decay rate, and the luminance decay parameter is a ratio of the actual light-emitting luminance to the display luminance per unit time.

And thirdly, carrying out statistical analysis on the acquired brightness attenuation parameters to obtain the change relation of the brightness attenuation parameters along with time, namely obtaining attenuation functions corresponding to the light-emitting devices or the light-emitting device combination and the display brightness in unit time.

By repeating the above process, attenuation functions (i.e., attenuation functions 0 to 256 in table 1) corresponding to the display luminances of different unit times are obtained. And for the light-emitting devices with different materials, the corresponding table of the display brightness and the attenuation function can be obtained by the method.

In the second embodiment, in order to reduce the complexity of the calculation, a plurality of unit-time display luminances are set to correspond to one decay function. For example, a set of correspondence tables of display luminance per unit time and attenuation parameters shown in table 2 may be obtained according to the material of the light emitting device.

TABLE 2

Display brightness per unit time	Attenuation function
		0～31	Attenuation function 1
32～63	Attenuation function 2
		……	……
224～255	Attenuation function 8

In table 2, 32 display luminances per unit time correspond to one decay function, that is, a group of display luminances per unit time correspond to one decay function. The specific number of the display luminances per unit time in the group of the display luminances per unit time is not limited, and is, for example, 4, 8, 10, 16, 64, or the like. By adopting the mode, the number of attenuation functions is reduced, the execution speed of the whole method is improved, the requirement on the chip operation capacity for executing the method is reduced, and the hardware cost of the whole scheme is considered.

The decay function corresponding to a group of unit time display brightness is obtained in the following two ways, specifically, the group of unit time display brightness of 0-31 is taken as an example for description.

In the first mode, the attenuation function corresponding to one brightness value in the display brightness 0-31 in unit time is used as the attenuation function 1 corresponding to the display brightness in the unit time. Illustratively, the decay function corresponding to the unit time display luminance 16 is taken as the decay function 1 corresponding to the set of unit time display luminances. In this way, when obtaining the decay function 1, it is only necessary to obtain the decay function corresponding to the display luminance 16 per unit time. The decay function corresponding to the display brightness 16 per unit time can be obtained by the method described in the first embodiment.

In the second mode, attenuation functions corresponding to the display brightness of 0-31 per unit time are respectively obtained. At this time, a total of 32 attenuation functions are obtained. And then fitting the 32 attenuation functions to obtain an attenuation function 1 corresponding to the display brightness of the group of unit time. The decay functions corresponding to the display brightness of different unit times can be obtained by the method described in the first embodiment.

In addition, the schemes shown in table 1 and table 2 are described by taking an example in which the bit depth of the display screen is 8 bits. Of course, a display screen having a bit depth of 6 bits or 10 bits may also be used. Display screens of different bit depths may exhibit different amounts of display brightness per unit time. For example, a 6-bit depth display screen exhibits 128 display luminances per unit time, and a 10-bit depth display screen exhibits 1024 display luminances per unit time.

By the method, the corresponding relation table of the display brightness and the attenuation function in unit time is obtained respectively for the light emitting devices of different materials or the combination of the light emitting devices of different materials. Further, a corresponding relation table of the display brightness and the attenuation function in unit time is stored in a processor of the electronic device or a control chip of the display screen in advance.

In this way, in executing step S502, the target attenuation function is determined in the attenuation function group recorded in the correspondence table according to the correspondence table of the unit time display luminance and the attenuation function stored in advance.

And S503, determining a brightness attenuation parameter according to the accumulated display time according to the target attenuation function.

Specifically, the brightness decay parameter is determined from the accumulated display time according to the target decay function determined from the unit time display brightness in step S502.

With continued reference to fig. 3, after step S102, the display screen brightness adjustment method further includes:

and S103, regulating and controlling the actual display brightness of the normally bright screen according to the brightness attenuation parameter so that the difference between the actual display brightness of the first screen and the actual display brightness of the second screen is within a set range.

In step S102, the brightness decay parameter for each region in the normally bright screen is determined. Based on this, step S103 specifically includes: and respectively regulating and controlling the actual display brightness of each region according to the brightness attenuation parameters of each region.

Fig. 6 is a flowchart illustrating step S103 according to an exemplary embodiment. In one embodiment, as shown in fig. 6, for one region, step S103 specifically includes:

and step S1031, determining a brightness compensation value of the area according to the brightness attenuation parameter of the area and the current expected display brightness.

In step S1031, when the brightness decay parameter is the brightness decay rate, the decayed brightness is obtained by multiplying the brightness decay parameter by the current desired display brightness. Further, the difference between the desired display luminance and the attenuated luminance is used as the luminance compensation value.

The desired display brightness of the different regions may be the same or different. The desired display brightness of the different regions is related to the currently displayed image. For example, the currently displayed image is light blue in the first area, white in the second area, and dark blue in the third area. At this time, the first region, the second region, and the third region have different display luminances. The brightness of the second area is greater than that of the first area, and the brightness of the first area is greater than that of the third area. When the currently displayed image displays the same color in the first region, the second region, and the third region, the display luminance of the three regions is the same.

Step S1032 determines a parameter of the driving signal of the sub-pixel in the region according to the brightness compensation value.

Wherein the parameter of the driving signal comprises a voltage value and/or a current value. Optionally, according to a pre-stored correspondence relationship between the brightness compensation value and the driving signal parameter, the parameter of the driving signal is searched according to the brightness compensation value determined in step S1031.

Step S1033, driving the sub-pixels in the area to enable by the driving signal.

In this way, the actual light-emission luminance of the sub-pixels of each region when the normally-bright screen is enabled is made to be close to the desired light-emission luminance. That is, the actual display brightness of the normally bright screen is close to the expected display brightness, and the display effect of the normally bright screen is guaranteed.

In another embodiment, step S103 specifically includes: and regulating and controlling the actual display brightness of the normally bright screen according to the brightness attenuation parameter so that the difference of the actual display brightness of the first screen and the actual display brightness of the second screen is within a set range in the unfolded state of the folding screen. In this way, the display effect of the folding screen in the unfolding state is optimized, and the influence on user experience caused by the brightness difference caused by the loss of the light-emitting device between the first screen and the second screen is avoided.

In addition, the setting range is described as follows: when the expected display brightness of the first screen and the expected display brightness of the second screen are the same, the set range meets the condition that a user cannot easily perceive the difference of the actual display brightness of the first screen and the actual display brightness of the second screen. When the expected display brightness of the first screen is different from that of the second screen, the difference between the set range and the expected display brightness of the first screen is similar to that of the second screen (for example, the maximum value of the set range is 5% smaller than the difference between the expected display brightness, and the maximum value of the set range is 5% larger than the difference between the expected display brightness), the difference between the actual display brightness of the first screen and the actual display brightness of the second screen is similar to that of the expected display brightness of the first screen and the expected display brightness of the second screen is ensured, and the natural display effect of the whole display screen is guaranteed.

In such a way, the brightness of the light emitted by the corresponding region is regulated and controlled according to the loss degree of the light emitting devices in different regions. Therefore, the actual display brightness difference between the first screen and the second screen can be reduced, the actual display brightness difference caused by the loss difference of the light-emitting devices in different areas in the normally bright screen is avoided, and the display effect of the folding screen is optimized.

According to the display screen brightness adjusting method provided by the embodiment of the disclosure, the display brightness of the normally-bright screen is determined based on the use loss degree of the normally-bright screen, so that the difference of the actual display brightness of the first screen and the actual display brightness of the second screen of the folding screen are weakened, the display effect is optimized, and the user experience is optimized.

Based on the display screen brightness adjusting method provided by the embodiment of the disclosure, the embodiment of the disclosure also provides a display screen brightness adjusting device. The device is applied to the electronic equipment with the folding screen, and the folding screen at least comprises a first screen and a second screen.

Fig. 7 to 10 are block diagrams illustrating a display screen brightness adjustment apparatus according to various exemplary embodiments. As shown in fig. 7, the display screen brightness adjusting apparatus includes:

a determining module 701, configured to determine a normally-bright screen in the first screen and the second screen;

an obtaining module 702, configured to obtain a brightness attenuation parameter of a normally-bright screen according to expected display brightness and display time when each frame of image is displayed on the normally-bright screen; and

the brightness control module 703 is configured to control actual display brightness of the normally bright screen according to the brightness attenuation parameter, so that a difference between the actual display brightness of the first screen and the actual display brightness of the second screen is within a set range.

In one embodiment, the determining module 701 is specifically configured to: and respectively counting the total frame number of the display images of the first screen and the second screen, and taking the maximum total frame number of the display images in the first screen and the second screen as a normally bright screen.

In one embodiment, as shown in FIG. 8, the obtaining module 702 includes:

a dividing unit 7021 configured to divide the normally-bright screen into a plurality of regions, where one region includes at least one sub-pixel; and

a first determining unit 7022 is configured to determine a brightness decay parameter of each region according to a desired display brightness and a display time when each region displays each frame image.

In one embodiment, as shown in fig. 9, the first determining unit 7022 includes:

a counting subunit 901, configured to count the expected display brightness and the display time when each frame of image is displayed in the region, so as to obtain the accumulated expected display brightness and the accumulated display time;

an obtaining subunit 902, configured to obtain display brightness in unit time according to the accumulated expected display brightness and the accumulated display time, and determine an attenuation function according to the display brightness in unit time, where the attenuation function represents a change relationship of an attenuation parameter with time; and

a determining subunit 903, which determines the brightness decay parameter according to the decay function and the accumulated display time.

In one embodiment, as shown in fig. 10, the brightness control module 703 includes:

a second determining unit 7031, configured to determine a luminance compensation value of the region according to the luminance decay parameter of the region and the currently desired display luminance;

a third determining unit 7032, configured to determine a parameter of a driving signal of a subpixel in the region according to the brightness compensation value; and

and a driving unit 7033 for driving the sub-pixel enable in the region by the driving signal.

In one embodiment, the working state of the folding screen comprises a folding state and an unfolding state; the brightness adjustment module 703 is specifically configured to: and regulating and controlling the actual display brightness of the normally-bright screen according to the brightness attenuation parameter so that the difference of the actual display brightness of the first screen and the second screen in the unfolded state is within a set range.

Based on the display screen brightness adjusting method provided by the embodiment of the disclosure, the embodiment of the disclosure also provides an electronic device. Optionally, the electronic device is selected from: a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, or a medical device, etc.

The electronic device includes: a folding screen, a processor, and a memory. Wherein the folding screen comprises at least a first screen and a second screen. The memory stores processor-executable instructions. The processor is configured to execute the executable instructions in the memory to implement the steps of the display screen brightness adjustment method provided above.

FIG. 11 is a block diagram illustrating an electronic device in accordance with an example embodiment. Referring to fig. 11, electronic device 1100 may include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1110, input/output (I/O) interface 1112, sensor component 1114, communication component 1116, and image capture component.

The processing component 1102 generally provides for overall operation of the electronic device 1100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 1102 may include one or more processors 1120 to execute instructions. Further, the processing component 1102 may include one or more modules that facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.

The memory 1104 is configured to store various types of data to support operations at the electronic device 1100. Examples of such data include instructions for any application or method operating on the electronic device 1100, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1104 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 1106 provides power to the various components of the electronic device 1100. The power components 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1100.

The multimedia component 1108 includes a screen between the electronic device 1100 and the target object that provides an output interface. 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 target object. 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.

The audio component 1110 is configured to output and/or input audio signals. For example, the audio component 1110 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 1100 is in an operational 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 1104 or transmitted via the communication component 1116. In some embodiments, the audio assembly 1110 further includes a speaker for outputting audio signals.

The I/O interface 1112 provides an interface between the processing component 1102 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc.

The sensor assembly 1114 includes one or more sensors for providing various aspects of state assessment for the electronic device 1100. For example, the sensor component 1114 may detect an open/closed state of the electronic device 1100, the relative positioning of components, such as a display and keypad of the electronic device 1100, the sensor component 1114 may also detect a change in the position of the electronic device 1100 or a component, the presence or absence of a target object in contact with the electronic device 1100, orientation or acceleration/deceleration of the electronic device 1100, and a change in the temperature of the electronic device 1100. As another example, the sensor assembly 1114 also includes a light sensor disposed below the OLED display screen.

The communication component 1116 is configured to facilitate wired or wireless communication between the electronic device 1100 and other devices. The electronic device 1100 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 1116 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1116 also 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 electronic device 1100 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.

In an exemplary embodiment, the disclosed embodiment also provides a readable storage medium, and the readable storage medium stores executable instructions. The executable instructions can be executed by a processor of the electronic equipment or a control chip of the folding screen to realize the steps of the provided display screen brightness adjusting method. The readable storage medium may be, among others, ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, 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 disclosure 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.

Claims

1. The method for adjusting the brightness of the display screen is applied to electronic equipment with a folding screen, wherein the folding screen comprises a first screen and a second screen; the method comprises the following steps:

determining a normally-bright screen in the first screen and the second screen;

2. The method of claim 1, wherein the determining a normally-on screen among the first screen and the second screen comprises:

3. The method according to claim 1, wherein the obtaining the brightness decay parameter of the normally-bright screen according to the expected display brightness and display time when each frame of image is displayed by the normally-bright screen comprises:

4. The method of claim 3, wherein determining the brightness decay parameter for each of the regions according to the expected display brightness and display time for each of the regions when each of the regions displays each frame of image comprises:

5. The method according to claim 3, wherein the adjusting the actual display brightness of the normally-bright screen according to the brightness decay parameter comprises:

and driving the sub-pixel in the area to enable through the driving signal.

6. The method of claim 1, wherein the operational state of the folding screen comprises a folded state and an unfolded state;

7. A display screen brightness adjusting device is characterized in that the device is applied to an electronic device with a folding screen, and the folding screen at least comprises a first screen and a second screen; the device comprises:

8. The apparatus of claim 7, wherein the determining module is specifically configured to:

9. The apparatus of claim 7, wherein the obtaining module comprises:

10. The apparatus of claim 9, wherein the first determining unit comprises:

11. The apparatus of claim 9, wherein the brightness control module comprises:

12. The apparatus of claim 7, wherein the operational states of the folding screen include a folded state and an unfolded state;

13. An electronic device, characterized in that the electronic device comprises: a folding screen, a processor, and a memory;

the folding screen at least comprises a first screen and a second screen;

the memory stores the processor-executable instructions;

the processor is configured to execute executable instructions in the memory to implement the steps of the method of any of claims 1-6.

14. A readable storage medium having stored thereon executable instructions, wherein the executable instructions when executed by a processor of an electronic device or a control chip of a folding screen implement the steps of the method of any one of claims 1 to 6.