CN105741771A - Light emitting element brightness determining method, brightness determining device and mobile terminal - Google Patents
Light emitting element brightness determining method, brightness determining device and mobile terminal Download PDFInfo
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
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Abstract
An embodiment of the invention discloses a light emitting element brightness determining method, a brightness determining device and a mobile terminal, wherein the light emitting element brightness determining method comprises the steps of when the light emitting element which is included in the display screen of the mobile terminal emits light, acquiring first brightness of the display screen when the light emitting element emits light; making the light emitting element stop light emitting, and obtaining second brightness of the display screen when the light emitting element stops light emitting; and according to the first brightness and the second brightness, calculating the light emitting brightness of the light emitting element for performing aging compensation on the light emitting element according to the light emitting brightness. According to the light emitting element brightness determining method, the brightness determining device and the mobile terminal, whether aging of the light emitting element occurs is determined through calculating the light emitting brightness of the light emitting element, thereby performing aging compensation on the light emitting element and improving aging detection precision.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining brightness of a light emitting device, and a mobile terminal.
Background
Currently, organic light-emitting diodes (OLEDs) are used as a new application technology for flat panel displays, and have the advantages of self-luminescence, no need of backlight, power saving, large viewing angle, and the like, and are widely used in terminals such as mobile phones, digital video cameras, tablet computers, televisions, and the like.
Since the OLED is self-luminous, the light-emitting process is a process in which the OLED material is continuously consumed. Thus, over time, the OLED material ages, such as its luminosity decreases and color shifts. In order to ensure the user experience and improve the display effect of the OLED, the aged OLED needs to be detected to perform aging compensation on the aged OLED. At present, whether the OLED is aged or not is generally determined directly according to the brightness value of the terminal display screen measured by the optical sensor, however, when content display is performed through the display screen, the measured brightness value not only includes the brightness of the OLED, but also is related to the current environment brightness, and therefore the aging detection accuracy is low.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining the brightness of a light-emitting element and a mobile terminal, which can determine whether the light-emitting element is aged or not by calculating the brightness of the light-emitting element so as to timely perform aging compensation on the aged light-emitting element and improve the accuracy of aging detection.
The embodiment of the invention discloses a method for determining the brightness of a light-emitting element, which comprises the following steps:
when a display screen of a mobile terminal emits light, acquiring first brightness of the display screen when the light-emitting element emits light;
controlling the light-emitting element to stop emitting light, and acquiring second brightness of the display screen when the light-emitting element stops emitting light;
and calculating the brightness of the light-emitting element according to the first brightness and the second brightness so as to perform aging compensation on the light-emitting element according to the brightness.
Optionally, a display screen of the mobile terminal is divided into at least one display area, and each display area is configured with a light sensor;
the first brightness and the second brightness are respectively the brightness of the display area when the light-emitting element corresponding to the same display area is lighted and the brightness of the display area when the light-emitting element is not lighted.
Optionally, the first brightness and the second brightness are obtained by a preset light sensor; the calculating the light emitting brightness of the light emitting element according to the first brightness and the second brightness includes:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
Optionally, a ratio of the time for the light emitting element to stop emitting light to the time for the light emitting element to emit light is not more than 25%.
Optionally, after the calculating the light emitting brightness of the light emitting element according to the first brightness and the second brightness, the method further includes:
judging whether the calculated brightness of the light-emitting element is lower than a preset brightness reference value or not;
and if the brightness of the light-emitting element is lower than the brightness reference value, determining that the light-emitting element is aged, and carrying out aging compensation on the light-emitting element according to a preset compensation rule.
Correspondingly, the embodiment of the invention also discloses a brightness determining device, which comprises:
the mobile terminal comprises a brightness obtaining module, a brightness obtaining module and a brightness obtaining module, wherein the brightness obtaining module is used for obtaining first brightness of a display screen when a light-emitting element included in the display screen of the mobile terminal emits light;
the control module is used for controlling the light-emitting element to stop emitting light;
the brightness acquisition module is further used for acquiring second brightness of the display screen when the light-emitting element stops emitting light;
and the calculation module is used for calculating the brightness of the light-emitting element according to the first brightness and the second brightness acquired by the brightness acquisition module so as to perform aging compensation on the light-emitting element according to the brightness.
Optionally, a display screen of the mobile terminal is divided into at least one display area, and each display area is configured with a light sensor;
the first brightness and the second brightness are respectively the brightness of the display area when the light-emitting element corresponding to the same display area is lighted and the brightness of the display area when the light-emitting element is not lighted.
Optionally, the first brightness and the second brightness are obtained by a preset light sensor; the calculation module is specifically configured to:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
Optionally, a ratio of the time for the light emitting element to stop emitting light to the time for the light emitting element to emit light is not more than 25%.
Optionally, the apparatus further comprises:
the judging module is used for judging whether the calculated brightness of the light-emitting element is lower than a preset brightness reference value or not;
and the compensation module is used for determining the aging of the light-emitting element when the judgment result of the judgment module is that the luminance of the light-emitting element is lower than the luminance reference value, and performing aging compensation on the light-emitting element according to a preset compensation rule.
Correspondingly, the embodiment of the invention also discloses a mobile terminal, which comprises a display screen, a memory and a processor, wherein the processor is respectively connected with the display screen and the memory, and the display screen consists of at least one light-emitting element; wherein,
the memory is used for storing an application program;
the processor calls the application program in the memory to execute the following steps:
when a light-emitting element included in the display screen emits light, acquiring first brightness of the display screen when the light-emitting element emits light;
controlling the light-emitting element to stop emitting light, and acquiring second brightness of the display screen when the light-emitting element stops emitting light;
and calculating the brightness of the light-emitting element according to the first brightness and the second brightness so as to perform aging compensation on the light-emitting element according to the brightness.
Optionally, a display screen of the mobile terminal is divided into at least one display area, and each display area is configured with a light sensor;
the first brightness and the second brightness are respectively the brightness of the display area when the light-emitting element corresponding to the same display area is lighted and the brightness of the display area when the light-emitting element is not lighted.
Optionally, the first brightness and the second brightness are obtained by a preset light sensor; the processor calls an application program in the memory to execute the calculation according to the first brightness and the second brightness to obtain the light-emitting brightness of the light-emitting element, and specifically executes the following steps:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
Optionally, a ratio of the time for the light emitting element to stop emitting light to the time for the light emitting element to emit light is not more than 25%.
Optionally, after the processor calls an application program in the memory to execute the calculation according to the first brightness and the second brightness to obtain the light-emitting brightness of the light-emitting element, the processor is further configured to execute the following steps:
judging whether the calculated brightness of the light-emitting element is lower than a preset brightness reference value or not;
and if the brightness of the light-emitting element is lower than the brightness reference value, determining that the light-emitting element is aged, and carrying out aging compensation on the light-emitting element according to a preset compensation rule.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention can acquire the first brightness corresponding to the display screen when the light-emitting element included in the display screen of the mobile terminal emits light, and acquire the second brightness corresponding to the display screen when the light-emitting element stops emitting light by controlling the light-emitting element to stop emitting light, so that the actual light-emitting brightness of the light-emitting element can be calculated according to the first brightness and the second brightness, the influence of ambient light is filtered, whether the light-emitting element ages or not is determined according to the calculated actual light-emitting brightness, the aging compensation is timely performed on the light-emitting element when the aging occurs, and the accuracy of the aging detection is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for determining luminance of a light emitting device according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of another method for determining the brightness of a light emitting device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a luminance determining apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another luminance determining apparatus provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and "third," etc. in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to the listed steps or modules but may alternatively include other steps or modules not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
It should be understood that the technical solution of the embodiment of the present invention may be specifically applied to a mobile Terminal (Terminal) configured with an OLED display screen, such as a mobile phone (e.g., an Android mobile phone, an iOS mobile phone, etc.), a television, a tablet computer, a Mobile Internet Device (MID), a Personal Digital Assistant (PDA), etc. The mobile terminal may also be referred to as User Equipment (UE), a terminal, a wireless terminal or a Mobile Station (MS), and the like, which are not limited in the embodiments of the present invention.
The embodiment of the invention discloses a method and a device for determining the brightness of a light-emitting element and a mobile terminal, which can determine whether the light-emitting element is aged or not by calculating the actual brightness of the light-emitting element so as to timely perform aging compensation on the aged light-emitting element and improve the accuracy of aging detection. The details are described below.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for determining luminance of a light emitting device according to an embodiment of the present invention. Specifically, as shown in fig. 1, the method for determining the brightness of the light emitting element according to the embodiment of the present invention may include the following steps:
101. when a display screen of a mobile terminal emits light, acquiring first brightness of the display screen when the light-emitting element emits light.
It should be understood that the method of the embodiment of the present invention may be specifically applied to the above-mentioned mobile terminal (simply referred to as "terminal"), and the display screen of the terminal is composed of at least one light-emitting element. Further, the light emitting element corresponds to a screen pixel, and may be specifically an OLED. Each screen pixel includes red sub pixel point (R), green sub pixel point (G) and blue sub pixel point (B), then each sub pixel point in this screen pixel can be an OLED, and the OLED that this red sub pixel point (R) corresponds is used for showing red (red light), the OLED that green sub pixel point (G) corresponds is used for showing green (green light), and the OLED that blue sub pixel point (B) corresponds is used for showing blue (blue light), thereby carries out the colour mixture through RGB and shows.
In a specific embodiment, generally, when the OLED is turned on, that is, when light is emitted through a light emitting element included in a display screen (specifically, a specific display area in a terminal display screen), the detected brightness (that is, a first brightness) of the display area often includes the light emitting brightness of the light emitting element, and also includes the brightness of a part of ambient light reflected under the influence of current ambient light. Therefore, it is not accurate to directly use the luminance value detected when the light emitting element emits light as the light emission luminance of the light emitting element. Specifically, when the light emitting element emits light, the brightness value corresponding to the display screen, i.e., the first brightness, can be measured by a preset light sensing device such as a light sensor.
102. And controlling the light-emitting element to stop emitting light, and acquiring second brightness of the display screen when the light-emitting element stops emitting light.
When the light-emitting element stops emitting light, the corresponding brightness value of the display screen, namely the second brightness, can also be measured by the preset optical sensor.
Further, after obtaining the first brightness of the display area when the light emitting element emits light, the light emitting element of the display area may be controlled to stop emitting light, and a brightness value corresponding to the display area at this time, that is, the second brightness, may be obtained. Since the light emitting elements in the display area do not emit light in this step, the obtained second brightness can be used as the brightness value of the current ambient light refraction.
103. And calculating the brightness of the light-emitting element according to the first brightness and the second brightness so as to perform aging compensation on the light-emitting element according to the brightness.
After obtaining the first brightness when the light emitting element in the display screen emits light and the second brightness when the light emitting element does not emit light, the influence of ambient light can be filtered according to a preset algorithm, and the actual light emitting brightness of the light emitting element in the display screen is calculated, for example, the difference value of the first brightness minus the second brightness is used as the actual light emitting brightness of the light emitting element of the display screen, so that whether the light emitting element ages or not can be judged according to the actual light emitting brightness of the light emitting element, and the aged light emitting element can be compensated in time when the aging is determined. Specifically, a luminance reference value may be stored in advance, so that it is possible to determine that the light emitting element is aged by comparing the actual light emission luminance of the light emitting element with the luminance reference value and when the actual light emission luminance is lower than the luminance reference value. The brightness reference value may be automatically obtained and stored after a screen is lighted when the terminal leaves a factory, or may be configured in advance by a terminal designer, which is not limited in the embodiments of the present invention.
In the embodiment of the invention, the first brightness corresponding to the display screen when the light-emitting element emits light can be obtained when the light-emitting element emits light, and the second brightness corresponding to the display screen when the light-emitting element emits light can be obtained by controlling the light-emitting element to stop emitting light, so that the actual light-emitting brightness of the light-emitting element can be obtained by calculation according to the first brightness and the second brightness, the influence of ambient light is filtered, whether the light-emitting element ages or not is determined according to the calculated actual light-emitting brightness, the aging compensation is timely performed on the light-emitting element when the aging occurs, and the accuracy of the aging detection is improved.
Further, referring to fig. 2, fig. 2 is a schematic flow chart of another method for determining the brightness of a light emitting device according to an embodiment of the present invention. Specifically, as shown in fig. 2, the method for determining the brightness of the light emitting element according to the embodiment of the present invention may include the following steps:
201. and partitioning the display screen of the mobile terminal to obtain at least one partitioned display area, wherein each display area is provided with a light sensor.
In an embodiment, a plurality of light sensing devices such as light sensors may be configured in the mobile terminal in advance. For example, the terminal display screen may be partitioned in advance to obtain a plurality of display areas, and a corresponding optical sensor may be configured for each display area. Specifically, each of the light sensors may correspond to only one display region (for measuring the brightness of the one display region), or may correspond to a plurality of display regions (the brightness of the plurality of display regions may be measured separately), so that the brightness measurement can be performed by the light sensor corresponding to each of the display regions.
202. When a light emitting element included in a current display area emits light, a first luminance of the current display area when the light emitting element emits light is acquired.
The current display area may be any one of a plurality of display areas obtained by dividing a display screen of the terminal.
203. And controlling the light-emitting element to stop emitting light, and acquiring second brightness of the current display area when the light-emitting element stops emitting light.
204. And calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element in the current display area.
In a specific embodiment, when light is emitted through a light emitting element in any display area of the display screen, the detected brightness of the display area often includes the light emitting brightness of the light emitting element, and also includes the brightness of a part of ambient light reflected under the influence of the current ambient light. Therefore, the brightness value detected when the light emitting element emits light is not accurate as the light emitting brightness of the light emitting element, and the actual light emitting brightness of the light emitting element in the current display area can be obtained by measuring the first brightness when the light emitting element in the current display area emits light and the second brightness when the light emitting element in the current display area does not emit light (stops emitting light) by the light sensor corresponding to the current display area. Specifically, the difference value obtained by subtracting the second brightness from the first brightness can be used as the actual light-emitting brightness of the light-emitting element in the display area, so that whether the light-emitting element is aged or not can be judged according to the actual light-emitting brightness of the light-emitting element, and the aged light-emitting element can be timely compensated when the aging is determined. That is, the first luminance and the second luminance are the luminance of the display region when the light emitting element measured by the light sensor corresponding to the same display region emits light and the luminance of the display region when the light emitting element does not emit light, respectively.
Optionally, when the actual light-emitting brightness of the light-emitting element is determined, in order to ensure that the requirement on the visual residual effect is met and the use of the terminal by the user is not affected, the ratio of the light-emitting time of the light-emitting element to the light-emitting time of the light-emitting element is set to be not more than 25%, that is, the duty ratio of the light-emitting time of the light-emitting element to the light-emitting time of the light-emitting element in each period (light-emitting time + light-emitting stopping time) is less than 20%, so as to ensure that the display effect of the display screen is not.
205. And judging whether the brightness of the light-emitting elements in the current display area is lower than a preset brightness reference value or not.
Further, after obtaining the actual light emitting brightness of the light emitting element in the current display area, it can be determined whether the light emitting element in the display area is aged according to the actual light emitting brightness. Specifically, a luminance reference value may be stored in advance, so that the step 206 may be executed by comparing the actual luminance of the light emitting device with the luminance reference value and determining that the light emitting device in the display area is aged when the actual luminance is lower than the luminance reference value; otherwise, it can be indicated that the light emitting elements in the display area are not aged, and no treatment is required.
Optionally, when performing the aging detection, the image output by the display area corresponding to the first brightness, that is, the image output by the light emitting element of the current display area when emitting light, may be a preset pure color image, and the brightness reference value corresponds to the preset pure color image, so as to further improve the aging detection accuracy. Or, the brightness reference value may be automatically obtained and stored after the screen is lit when the terminal is shipped from a factory, or may be configured in advance by a terminal designer, which is not limited in the embodiment of the present invention.
206. And determining the aging of the light-emitting element, and carrying out aging compensation on the light-emitting element according to a preset compensation rule.
Further, after it is determined that the light emitting elements in one or more display regions in the display screen age, the aging compensation may be performed on the light emitting elements in the display regions determined as aging according to a preset compensation rule, for example, the aging compensation is performed by adjusting the driving current of the light emitting elements in the display regions (specifically, increasing the driving current), increasing the driving voltage of the light emitting elements in the display regions, and decreasing the light emitting brightness of the light emitting elements in the display regions, which is not limited in the embodiment of the present invention.
It should be understood that the calculated light-emitting brightness of the light-emitting elements may be the light-emitting brightness corresponding to the whole light-emitting elements included in the current display area. Thus, when the aging compensation is performed, the aging compensation can be performed for all the light emitting elements in the display region at the same time. Alternatively, the light emitting elements in the display region are sequentially subjected to aging detection, and then aging compensation is performed in a targeted manner.
In the embodiment of the invention, the terminal display screen can be partitioned to obtain a plurality of display areas, so that the first brightness corresponding to the display area when the light-emitting element included in the display area emits light is obtained, the second brightness corresponding to the display area when the light-emitting element stops emitting light is obtained by controlling the light-emitting element to stop emitting light, the influence of ambient light is filtered by taking the difference value of the first brightness and the second brightness as the light-emitting brightness of the light-emitting element in the display area, and whether the light-emitting element ages or not is determined according to the calculated light-emitting brightness, so that the aging compensation is timely performed on the light-emitting element when the aging occurs, and the accuracy of aging detection is improved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a luminance determining apparatus according to an embodiment of the present invention. Specifically, the apparatus according to the embodiment of the present invention may be disposed in the mobile terminal, and a display screen of the mobile terminal is composed of at least one light emitting element. As shown in fig. 3, the luminance determining apparatus according to the embodiment of the present invention may include a luminance obtaining module 11, a control module 12, and a calculating module 13. Wherein,
the brightness obtaining module 11 is configured to obtain a first brightness of a display screen of the mobile terminal when a light emitting element included in the display screen emits light.
In a specific embodiment, generally, when the OLED is turned on, that is, when the OLED emits light through a light emitting element in a display screen (specifically, a specific display area in a terminal display screen), the luminance of the display area detected by the luminance obtaining module 11, that is, the first luminance, often includes the light emitting luminance of the light emitting element, and also includes the luminance of a part of ambient light reflected under the influence of the current ambient light. Therefore, it is not accurate to directly use the brightness value detected by the brightness acquiring module 11 when the light emitting element emits light as the light emitting brightness of the light emitting element. Specifically, the brightness value corresponding to the display area when the light emitting element emits light, i.e. the first brightness, may be obtained by the brightness obtaining module 11 through measurement and obtaining by a preset light sensing device, such as a light sensor.
The control module 12 is configured to control the light emitting element to stop emitting light.
The brightness obtaining module 11 is further configured to obtain a second brightness of the display screen when the light emitting element stops emitting light.
The brightness value corresponding to the display screen when the light-emitting element stops emitting light, that is, the second brightness, may also be obtained by the brightness obtaining module 11 through measurement and obtaining by the preset light sensor.
Further, after the brightness obtaining module 11 obtains the first brightness of the display area when the light emitting element emits light, the control module 12 may control the light emitting element of the display area to stop emitting light, and trigger the brightness obtaining module 11 to obtain a brightness value corresponding to the display area at this time, that is, the second brightness. Since the light emitting elements in the display area do not emit light, the obtained second brightness can be used as the brightness value of the current ambient light refraction.
The calculating module 13 is configured to calculate, according to the first luminance and the second luminance obtained by the luminance obtaining module 11, light-emitting luminance of the light-emitting element, so as to perform aging compensation on the light-emitting element according to the light-emitting luminance.
After the luminance obtaining module 11 obtains the first luminance when the light emitting element in the display area emits light and the second luminance when the light emitting element does not emit light, the calculating module 13 may filter the influence of the ambient light according to a preset algorithm, and calculate the actual luminance of the light emitting element in the display area, for example, a difference value obtained by subtracting the second luminance from the first luminance is used as the actual luminance of the light emitting element in the display area, so that whether the light emitting element is aged or not can be determined according to the actual luminance of the light emitting element, so as to timely compensate the aged light emitting element when it is determined that the aging occurs.
In the embodiment of the invention, the first brightness corresponding to the display screen when the light-emitting element emits light can be obtained when the light-emitting element emits light, and the second brightness corresponding to the display screen when the light-emitting element emits light can be obtained by controlling the light-emitting element to stop emitting light, so that the actual light-emitting brightness of the light-emitting element can be obtained by calculation according to the first brightness and the second brightness, the influence of ambient light is filtered, whether the light-emitting element ages or not is determined according to the calculated actual light-emitting brightness, the aging compensation is timely performed on the light-emitting element when the aging occurs, and the accuracy of the aging detection is improved.
Further, referring to fig. 4, fig. 4 is a schematic structural diagram of another luminance determining apparatus according to an embodiment of the present invention. Specifically, the apparatus according to the embodiment of the present invention may include the luminance obtaining module 11, the control module 12, and the calculating module 13 of the luminance determining apparatus according to the embodiment of fig. 3. Further, as shown in fig. 4, in the embodiment of the present invention, the display screen corresponding to the apparatus may be divided into at least one display area, and each display area is configured with a light sensor.
In a specific embodiment, one or more light sensing devices such as light sensors are pre-configured in the mobile terminal. Specifically, the terminal display screen may be divided into a plurality of display areas in advance, and a corresponding optical sensor is configured for each display area. Specifically, each of the light sensors may correspond to only one display region (for measuring the brightness of the one display region), or may correspond to a plurality of display regions (the brightness of the plurality of display regions may be measured respectively), so that the brightness of each display region can be measured by the light sensor corresponding to the display region.
The first brightness and the second brightness are respectively the brightness of the display area when the light-emitting element corresponding to the same display area is lighted and the brightness of the display area when the light-emitting element is not lighted.
Further, in the embodiment of the present invention, the first brightness and the second brightness are obtained by a preset light sensor; the calculation module 13 may be specifically configured to:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
In a specific embodiment, when the light is emitted through the light emitting element in any display area of the display screen, the brightness of the display area detected by the brightness acquiring module 11 often includes the light emitting brightness of the light emitting element, and also includes the brightness of the part of the ambient light reflected under the influence of the current ambient light. Therefore, the brightness value detected when the light emitting element emits light is directly inaccurate as the light emitting brightness of the light emitting element, and the brightness acquiring module 11 can measure the first brightness when the light emitting element of the display area emits light and the second brightness when the light emitting element of the display area does not emit light (stops emitting light) through the corresponding optical sensor of the display area, and acquire the actual light emitting brightness of the light emitting element of the display area through the calculating module 13. The calculating module 13 may specifically use a difference value obtained by subtracting the second brightness from the first brightness as the actual light-emitting brightness of the light-emitting element in the display area, so as to determine whether the light-emitting element is aged according to the actual light-emitting brightness of the light-emitting element, and compensate the aged light-emitting element in time when it is determined that the aging occurs.
Optionally, when the actual light-emitting brightness of the light-emitting element is determined, in order to ensure that the visual residual effect is satisfied, a ratio of the time for the light-emitting element to stop emitting light to the time for the light-emitting element to emit light may be set to be not more than 25%, so as to ensure that the display effect of the display screen is unchanged, and to avoid disturbing the user using the terminal.
Further optionally, in an embodiment of the present invention, the apparatus may further include:
a judging module 14, configured to judge whether the calculated luminance of the light emitting element is lower than a preset luminance reference value;
and a compensation module 15, configured to determine that the light-emitting element is aged when the determination result of the determination module 14 is that the light-emitting brightness of the light-emitting element is lower than the brightness reference value, and perform aging compensation on the light-emitting element according to a preset compensation rule.
Further, after the calculating module 13 obtains the actual light emitting brightness of the light emitting elements in each display region, the determining module 14 may determine whether the light emitting elements in the display region are aged according to the actual light emitting brightness. Specifically, a luminance reference value may be pre-stored in the terminal, so that the determining module 14 may determine that the light emitting elements in the display area are aged when the actual luminance of the light emitting elements is lower than the luminance reference value by comparing the actual luminance of the light emitting elements with the luminance reference value; otherwise, it can be indicated that the light emitting elements in the display area are not aged, and no treatment is required. The brightness reference value may be automatically obtained and stored when the screen is lit, or may be configured in advance by a terminal designer, which is not limited in the embodiments of the present invention.
Further, after the determining module 14 determines that the light emitting elements in one or more display areas in the display screen age, the compensating module 15 may perform aging compensation on the light emitting elements in the display area according to a preset compensation rule, for example, by adjusting a driving current of the light emitting elements in the display area (specifically, increasing the driving current), increasing a driving voltage of the light emitting elements in the display area, and reducing the light emitting brightness of the light emitting elements in the display area, which is not limited in the embodiment of the present invention.
In the embodiment of the invention, the terminal display screen can be partitioned to obtain a plurality of display areas, so that the first brightness corresponding to the display area when the light-emitting element included in the display area emits light is obtained, the second brightness corresponding to the display area when the light-emitting element stops emitting light is obtained by controlling the light-emitting element to stop emitting light, the influence of ambient light is filtered by taking the difference value of the first brightness and the second brightness as the light-emitting brightness of the light-emitting element in the display area, and whether the light-emitting element ages or not is determined according to the calculated light-emitting brightness, so that the aging compensation is timely performed on the light-emitting element when the aging occurs, and the accuracy of aging detection is improved.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention, configured to execute the method for determining the brightness of the light emitting element. Specifically, as shown in fig. 5, the mobile terminal (abbreviated as "terminal") according to the embodiment of the present invention may include: at least one processor 100, at least one input device 200, at least one output device 300, a memory 500, a light sensor 600, etc. Wherein the components are communicatively coupled via one or more buses 400. Those skilled in the art will appreciate that the configuration of the terminal shown in fig. 5 is not intended to limit embodiments of the present invention, and may be a bus configuration, a star configuration, a combination of more or fewer components than those shown, or a different arrangement of components. Wherein:
the processor 100 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing programs and/or modules stored in the memory 500 and calling data stored in the memory 500. The processor 100 may be composed of an Integrated Circuit (IC), for example, a single packaged IC, or a plurality of packaged ICs connected with the same or different functions. For example, the processor 100 may include only a Central Processing Unit (CPU), or may be a combination of a CPU, a Digital Signal Processor (DSP), a Graphics Processing Unit (GPU), and various control chips. In the embodiment of the present invention, the CPU may be a single operation core, or may include multiple operation cores.
The input device 200 may include a standard touch screen, keyboard, camera, etc., and may also include a wired interface, wireless interface, etc.
The output device 300 may include a display screen, a speaker, etc., and may also include a wired interface, a wireless interface, etc. In an embodiment of the present invention, the output device 300 may include a display screen, which may be specifically an OLED display screen, and the display screen is composed of a plurality of light emitting elements (OLEDs).
The memory 500 may be used to store software programs and modules, and the processor 100, the input device 200, and the output device 300 execute various functional applications of the terminal and implement data processing by calling the software programs and modules stored in the memory 500. The memory 500 mainly includes a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, and the like; the data storage area may store data created according to the use of the terminal, and the like. In the embodiment of the present invention, the operating system may be an Android system, an iOS system, a Windows operating system, or the like.
Specifically, the processor 100 calls an application program stored in the memory 500 to execute the following steps:
when a display screen of a mobile terminal emits light, acquiring first brightness of the display screen when the light-emitting element emits light;
controlling the light-emitting element to stop emitting light, and acquiring second brightness of the display screen when the light-emitting element stops emitting light;
and calculating the brightness of the light-emitting element according to the first brightness and the second brightness so as to perform aging compensation on the light-emitting element according to the brightness.
Optionally, the display screen of the mobile terminal is divided into at least one display area, and each display area is configured with the optical sensor 600;
the first luminance and the second luminance are the luminance of the display region when the light emitting element corresponding to the same display region emits light and the luminance of the display region when the light emitting element does not emit light, respectively, measured by the light sensor 600.
Optionally, the first brightness and the second brightness are obtained by a preset light sensor 600; the processor 100 calls an application program stored in the memory 500 to execute the calculation to obtain the light-emitting brightness of the light-emitting element according to the first brightness and the second brightness, and specifically executes the following steps:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
Optionally, the ratio of the time for the light-emitting element to stop emitting light to the time for the light-emitting element to emit light is not more than 25%.
Optionally, after the processor 100 calls an application program stored in the memory 500 to execute the calculation of the light-emitting brightness of the light-emitting element according to the first brightness and the second brightness, the processor is further configured to execute the following steps:
judging whether the calculated brightness of the light-emitting element is lower than a preset brightness reference value or not;
and if the brightness of the light-emitting element is lower than the brightness reference value, determining that the light-emitting element is aged, and carrying out aging compensation on the light-emitting element according to a preset compensation rule.
In the embodiment of the invention, the first brightness corresponding to the display screen when the light-emitting element emits light is obtained when the light-emitting element emits light, and the second brightness corresponding to the display screen when the light-emitting element emits light is obtained by controlling the light-emitting element to stop emitting light, so that the light-emitting brightness of the light-emitting element can be calculated according to the first brightness and the second brightness, the influence of ambient light is filtered, whether the light-emitting element ages is determined according to the calculated light-emitting brightness, the aging compensation is timely performed on the light-emitting element when the aging occurs, and the accuracy of the aging detection is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (15)
1. A method for determining the brightness of a light emitting element, comprising:
when a display screen of a mobile terminal emits light, acquiring first brightness of the display screen when the light-emitting element emits light;
controlling the light-emitting element to stop emitting light, and acquiring second brightness of the display screen when the light-emitting element stops emitting light;
and calculating the brightness of the light-emitting element according to the first brightness and the second brightness so as to perform aging compensation on the light-emitting element according to the brightness.
2. The method according to claim 1, wherein the display screen of the mobile terminal is divided into at least one display area, and each display area is configured with a light sensor;
the first brightness and the second brightness are respectively the brightness of the display area when the light-emitting element corresponding to the same display area is lighted and the brightness of the display area when the light-emitting element is not lighted.
3. The method according to claim 1 or 2, wherein the first brightness and the second brightness are obtained by a preset light sensor; the calculating the light emitting brightness of the light emitting element according to the first brightness and the second brightness includes:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
4. The method according to claim 1 or 2, wherein a ratio of a time during which the light emitting element stops emitting light to a time during which the light emitting element emits light is not more than 25%.
5. The method according to claim 1 or 2, wherein after said calculating a light emission luminance of said light emitting element from said first luminance and said second luminance, the method further comprises:
judging whether the calculated brightness of the light-emitting element is lower than a preset brightness reference value or not;
and if the brightness of the light-emitting element is lower than the brightness reference value, determining that the light-emitting element is aged, and carrying out aging compensation on the light-emitting element according to a preset compensation rule.
6. A luminance determining apparatus, characterized by comprising:
the mobile terminal comprises a brightness obtaining module, a brightness obtaining module and a brightness obtaining module, wherein the brightness obtaining module is used for obtaining first brightness of a display screen when a light-emitting element included in the display screen of the mobile terminal emits light;
the control module is used for controlling the light-emitting element to stop emitting light;
the brightness acquisition module is further used for acquiring second brightness of the display screen when the light-emitting element stops emitting light;
and the calculation module is used for calculating the brightness of the light-emitting element according to the first brightness and the second brightness acquired by the brightness acquisition module so as to perform aging compensation on the light-emitting element according to the brightness.
7. The device according to claim 6, wherein the display screen of the mobile terminal is divided into at least one display area, and each display area is configured with a light sensor;
the first brightness and the second brightness are respectively the brightness of the display area when the light-emitting element corresponding to the same display area is lighted and the brightness of the display area when the light-emitting element is not lighted.
8. The apparatus according to claim 6 or 7, wherein the first brightness and the second brightness are obtained by a preset light sensor; the calculation module is specifically configured to:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
9. The apparatus according to claim 6 or 7, wherein a ratio of a time during which the light emitting element stops emitting light to a time during which the light emitting element emits light is not more than 25%.
10. The apparatus of claim 6 or 7, further comprising:
the judging module is used for judging whether the calculated brightness of the light-emitting element is lower than a preset brightness reference value or not;
and the compensation module is used for determining the aging of the light-emitting element when the judgment result of the judgment module is that the luminance of the light-emitting element is lower than the luminance reference value, and performing aging compensation on the light-emitting element according to a preset compensation rule.
11. A mobile terminal is characterized by comprising a display screen, a memory and a processor, wherein the processor is respectively connected with the display screen and the memory, and the display screen is composed of at least one light-emitting element; wherein,
the memory is used for storing an application program;
the processor calls the application program in the memory to execute the following steps:
when a light-emitting element included in the display screen emits light, acquiring first brightness of the display screen when the light-emitting element emits light;
controlling the light-emitting element to stop emitting light, and acquiring second brightness of the display screen when the light-emitting element stops emitting light;
and calculating the brightness of the light-emitting element according to the first brightness and the second brightness so as to perform aging compensation on the light-emitting element according to the brightness.
12. The mobile terminal according to claim 11, wherein the display screen of the mobile terminal is divided into at least one display area, and each display area is configured with a light sensor;
the first brightness and the second brightness are respectively the brightness of the display area when the light-emitting element corresponding to the same display area is lighted and the brightness of the display area when the light-emitting element is not lighted.
13. The mobile terminal according to claim 11 or 12, wherein the first brightness and the second brightness are obtained by a preset light sensor; the processor calls an application program in the memory to execute the calculation according to the first brightness and the second brightness to obtain the light-emitting brightness of the light-emitting element, and specifically executes the following steps:
and calculating the difference value of the first brightness and the second brightness, and taking the difference value as the light emitting brightness of the light emitting element.
14. The mobile terminal according to claim 11 or 12, wherein a ratio of a time for which the light emitting element stops emitting light to a time for which the light emitting element emits light is not more than 25%.
15. The mobile terminal according to claim 11 or 12, wherein the processor calls an application program in the memory to execute the following steps after calculating the light-emitting brightness of the light-emitting element according to the first brightness and the second brightness:
judging whether the calculated brightness of the light-emitting element is lower than a preset brightness reference value or not;
and if the brightness of the light-emitting element is lower than the brightness reference value, determining that the light-emitting element is aged, and carrying out aging compensation on the light-emitting element according to a preset compensation rule.
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Application publication date: 20160706 |