CN112767878B - Brightness adjusting method and device and display equipment - Google Patents
Brightness adjusting method and device and display equipment Download PDFInfo
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- CN112767878B CN112767878B CN202110134890.5A CN202110134890A CN112767878B CN 112767878 B CN112767878 B CN 112767878B CN 202110134890 A CN202110134890 A CN 202110134890A CN 112767878 B CN112767878 B CN 112767878B
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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
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The embodiment of the application provides a brightness adjusting method, a brightness adjusting device and display equipment, wherein theoretical display brightness of the display equipment and corresponding light sensation receiving brightness are obtained, the light sensation receiving brightness can be used for mirror reflection brightness detected by a light sensation detection unit of the display equipment in a black state environment, so that a brightness adjusting corresponding relation of the display equipment can be established according to the theoretical display brightness and the corresponding light sensation receiving brightness, in the brightness adjusting process, the display brightness of the display equipment can be adjusted based on the brightness adjusting corresponding relation, the adjusted display brightness is closer to the corresponding light sensation receiving brightness, an expected theoretical brightness level is reached or approached, and accordingly brightness attenuation is effectively delayed.
Description
Technical Field
The application relates to the technical field of display, in particular to a brightness adjusting method and device and display equipment.
Background
With the progress of display technology, Organic Light Emitting Diode (OLED) is one of the hot spots in the research field of flat panel displays, and more Active Matrix Organic Light Emitting Diode (AMOLED) display panel products enter the market. In the use process of the display panel product, the brightness generally gradually decreases along with the change of time, so that the actual brightness level cannot reach the expected theoretical display brightness, and the use feeling of a user is further influenced. Therefore, how to effectively delay the brightness attenuation is a technical problem to be solved in the field.
Disclosure of Invention
Based on the defects of the existing design, the application provides a brightness adjusting method, a brightness adjusting device and display equipment, in the brightness adjusting process, the display brightness of the display equipment can be adjusted based on the brightness adjusting corresponding relation, so that the adjusted display brightness is closer to the corresponding theoretical display brightness to reach or approach the expected theoretical brightness level, and the condition of brightness attenuation is effectively delayed.
Based on a first aspect of the present application, a brightness adjusting method is provided, which is applied to a display device, where the display device includes a light sensation detection unit, and the method includes:
acquiring theoretical display brightness of the display equipment and corresponding light sensation receiving brightness, wherein the light sensation receiving brightness is specular reflection brightness detected by the display equipment through the light sensation detection unit in a black state environment;
and establishing a brightness adjustment corresponding relation of the display equipment according to the theoretical display brightness and the corresponding light sensation receiving brightness so as to adjust the display brightness of the display equipment based on the brightness adjustment corresponding relation.
In one possible implementation manner of the first aspect, the step of obtaining a theoretical display brightness and a corresponding light-sensing reception brightness of the display device includes:
when the display device is in a black state environment, acquiring theoretical display brightness of the display device, and detecting light sensation intensity of second light reflected back to a first light of the display device through a mirror reflection surface in the black state environment by the light sensation detection unit under the theoretical display brightness;
and calculating to obtain light sensation receiving brightness corresponding to the theoretical display brightness according to the light sensation intensity.
In a possible implementation manner of the first aspect, the step of calculating, according to the light sensation intensity, a light sensation receiving brightness corresponding to the theoretical display brightness includes:
determining a light path attenuation coefficient for the light sensation intensity according to the distance between the display device and the specular reflection surface;
and converting the light sensation intensity into light sensation receiving brightness corresponding to the theoretical display brightness according to the light path attenuation coefficient.
In a possible implementation manner of the first aspect, the adjusting the display brightness of the display device based on the brightness adjustment correspondence includes:
acquiring the current theoretical display brightness of the display equipment;
acquiring the actual display brightness before adjustment corresponding to the current theoretical display brightness according to the brightness adjustment corresponding relation;
and adjusting the brightness of the display equipment according to the current theoretical display brightness and the actual display brightness before adjustment.
In a possible implementation manner of the first aspect, the adjusting the brightness of the display device according to the current theoretical display brightness and the actual display brightness before adjustment includes:
determining compensation voltage of a pixel unit of the display equipment according to the current theoretical display brightness and the actual display brightness before adjustment;
and adjusting the target voltage output to the pixel unit according to the compensation voltage of the pixel unit.
In a possible implementation manner of the first aspect, the determining a compensation voltage of a pixel unit of the display device according to the current theoretical display brightness and the actual display brightness before adjustment includes:
calculating a first gray scale value corresponding to the current theoretical display brightness and a second gray scale value corresponding to the actual display brightness before adjustment;
determining a first voltage corresponding to the first gray scale value and a second voltage corresponding to the second gray scale value according to a mapping relation between gray scales and data voltages;
and determining a compensation voltage of a pixel unit of the display equipment according to the first voltage and the second voltage.
In a possible implementation manner of the first aspect, the step of adjusting the target voltage output to the pixel unit according to the compensation voltage of the pixel unit includes:
and traversing and adjusting the target voltage output to the pixel unit within the compensation voltage range of the pixel unit by taking the current voltage of the pixel unit as an initial node until the actual display brightness before adjustment is matched with the current theoretical display brightness.
According to a second aspect of the present application, there is provided a brightness adjusting apparatus applied to a display device including a light sensing detection unit, the apparatus comprising:
the acquisition module is used for acquiring theoretical display brightness of the display equipment and corresponding light sensation receiving brightness, wherein the light sensation receiving brightness is specular reflection brightness detected by the light sensation detection unit of the display equipment in a black state environment;
and the adjusting module is used for establishing a brightness adjusting corresponding relation of the display equipment according to the theoretical display brightness and the corresponding light sensing receiving brightness so as to adjust the display brightness of the display equipment based on the brightness adjusting corresponding relation.
In a possible implementation manner of the second aspect, the adjusting module is specifically configured to:
acquiring the current theoretical display brightness of the display equipment;
acquiring actual display brightness before adjustment corresponding to the current theoretical display brightness according to the brightness adjustment corresponding relation;
and adjusting the brightness of the display equipment according to the current theoretical display brightness and the actual display brightness before adjustment.
According to a third aspect of the present application, there is provided a display device, comprising a machine-readable storage medium having a computer program stored therein and a processor configured to execute the computer program to perform the brightness adjustment method of the first aspect or any one of the possible implementation manners of the first aspect.
Based on any one of the above aspects, the theoretical display brightness and the corresponding light-sensing receiving brightness of the display device are obtained, the light-sensing receiving brightness can be used for the specular reflection brightness detected by the light-sensing detection unit of the display device in a black state environment, so that the brightness adjustment corresponding relation of the display device can be established according to the theoretical display brightness and the corresponding light-sensing receiving brightness, and in the brightness adjustment process, the display brightness of the display device can be adjusted based on the brightness adjustment corresponding relation, so that the adjusted display brightness is closer to the corresponding theoretical display brightness to reach or approach an expected theoretical brightness level, and the brightness attenuation condition is effectively delayed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic flow chart illustrating a brightness adjustment method provided in an embodiment of the present application;
FIG. 2 shows a flow diagram of the sub-steps of step S110 shown in FIG. 1;
fig. 3 is a schematic view illustrating an application scenario of the brightness adjustment method provided in the embodiment of the present application;
FIG. 4 is a flow chart illustrating the sub-steps of step S120 shown in FIG. 1;
fig. 5 is a schematic diagram illustrating functional blocks of a brightness adjustment device provided in an embodiment of the present application;
fig. 6 is a block diagram schematically illustrating a structure of a display device for performing the brightness adjustment method according to an embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some of the embodiments of the present application.
It should be understood that the operations of the flow diagrams may be performed out of order, and steps without logical context may be performed in reverse order or simultaneously. In addition, one skilled in the art, under the guidance of the present disclosure, may add one or more other operations to, or remove one or more operations from, the flowchart.
As mentioned above, the inventor of the present application has found that each display panel product usually has a time-varying luminance drop curve, and the curve is usually not fixed and has a large variance. Therefore, aiming at the situation that the brightness of the display panel is reduced along with time, the problem of brightness reduction can be delayed by delaying the slope of a brightness reduction curve of the display panel or verifying and adjusting the brightness of the display panel in a later period by a certain method.
However, due to different production batches of display panels, different batches of display panels have process differences, and the process differences have a large influence on the life curves, so that the life curves of the display panels in different batches are also different, and it is difficult to obtain the brightness change states of all the display panels after a period of time through a uniform brightness life curve. Therefore, due to the individual differences of the display panels, when the same group of brightness life curves is used for corresponding to different display panels in the related art, the problem of inconsistent actual brightness adjustment in the later period can be caused, and the display effect is influenced. Based on this, how to obtain the individual brightness adjustment corresponding relation for each display panel to obtain the actual light sensing receiving brightness of the display panel, so as to adjust the display brightness of the display device, is an important component of the creative research of the inventor of the present application.
It should be noted that the above prior art solutions have defects which are the results of practical and careful study by the inventor, therefore, the discovery process of the above technical problems and the solutions proposed by the following embodiments of the present application for the above problems should be the contribution of the inventor to the present application in the course of the invention creation process, and should not be understood as technical contents known by those skilled in the art.
Based on the above technical problems discovered by the inventor, the embodiments of the present application provide an improved brightness adjustment method, in which a theoretical display brightness of a display device and a corresponding light-sensing reception brightness are obtained, and the light-sensing reception brightness can be used for a specular reflection brightness detected by a light-sensing detection unit of the display device in a black state environment, so that a brightness adjustment corresponding relationship of the display device can be established according to the theoretical display brightness and the corresponding light-sensing reception brightness.
Therefore, in the brightness adjusting process, the display brightness of the display device can be adjusted based on the brightness adjusting corresponding relation, so that the adjusted display brightness is closer to the corresponding theoretical display brightness to reach or approach the expected theoretical brightness level, and the brightness attenuation is effectively delayed.
The brightness adjustment method provided in the embodiment of the present application will be exemplarily described below with reference to fig. 1. It should be understood that, in other embodiments, the order of some steps in the brightness adjustment method of the present embodiment may be interchanged according to actual needs, or some steps may be omitted or deleted.
Referring to fig. 1, the brightness adjusting method may include the following steps, which are described in detail below.
In step S110, the theoretical display brightness of the display device and the corresponding light sensing brightness are obtained.
Step S120, a brightness adjustment corresponding relationship of the display device is established according to the theoretical display brightness and the corresponding light-sensing receiving brightness, so as to adjust the display brightness of the display device based on the brightness adjustment corresponding relationship.
In this embodiment, the theoretical display brightness of the display device may be understood as the logical display brightness of the current program of the display device, and the theoretical display brightness of the display panel may be different from the corresponding actual display brightness along with the change of time. For example, the current theoretical display brightness is 300 nits, whereas the actual display brightness may be only 280 nits, which is reduced compared to the theoretical display brightness.
Therefore, in this embodiment, while the theoretical display brightness of the display device is obtained, the actual display brightness corresponding to the current theoretical display brightness needs to be detected, and the actual display brightness may be represented by light-sensing receiving brightness. The light-sensing reception brightness can be understood as the specular reflection brightness detected by the light-sensing detection unit in the black environment of the display device.
In the detection process, in order to improve the accuracy of the detection result and reduce the influence of environmental factors, the placing position and the mirror position of the display device and the distance between the placing position and the mirror position of the display device can be fixed and unchanged, and the detection is performed in the black state environment, so that the specular reflection brightness of the display device detected by the light sensation detection unit in the black state environment can be obtained. The black environment may be an environment with an ambient brightness lower than a set brightness value (for example, may be close to 0) to reduce the influence of the ambient light on the detection result.
Therefore, a brightness adjustment corresponding relation of the display device can be established according to the theoretical display brightness and the corresponding light-sensing receiving brightness, the brightness adjustment corresponding relation is used for representing the light-sensing receiving brightness corresponding to each different theoretical display brightness, and in the brightness adjustment process, the display brightness of the display device can be adjusted based on the brightness adjustment corresponding relation, so that the adjusted display brightness is closer to the corresponding theoretical display brightness to reach or approach an expected theoretical brightness level, and the brightness attenuation condition is effectively delayed.
In one possible implementation manner, referring to fig. 2 in conjunction with step S110, in the step of obtaining the theoretical display brightness and the corresponding light sensing receiving brightness of the display device, the following alternative exemplary sub-steps may be implemented, which are described in detail below.
And a substep S111, obtaining theoretical display brightness of the display device when the display device is in a black state environment, and detecting, by a light sensation detection unit, light sensation intensity of a second light ray reflected back to the first light ray of the display device by the specular reflection surface in the black state environment under the theoretical display brightness.
In the sub-step S112, the light sensing luminance corresponding to the theoretical display luminance is obtained according to the light sensing intensity calculation.
For example, referring to FIG. 3 in conjunction, the scene may include a display device 100 and a specular reflective surface 200. Display device 100 may include display area AA1, and display area AA1 may be used to display specific display content. The specular reflection surface 200 may be made of any material having a specular reflection function, and is not limited in particular. For example, the specular reflection surface 200 may be formed by placing the display device 100 in a closed box, covering the box cover to make the display device 100 in a black state environment or an environment close to the black state environment, and providing a specular coating on a side of the box cover close to the display device 100.
The display device 100 may be provided with a light sensing unit 150, and the light sensing unit 150 may detect light energy from ultraviolet light to infrared light and output the light energy as an electronic signal. For example, the light sensing unit 150 can convert the light energy (i.e. the energy of the incident light) into electrical energy, wherein the magnitude and property of the incident light energy can reflect the existence of the light energy and the carried information of the measured change, when the photosensor in the light sensing unit 150 is irradiated by light, the electrical property changes, and the change has a strict correspondence with the intensity of the incident radiant energy, such as accurately measuring the voltage, current, frequency, etc. reflecting the change of the electrical energy, the light radiant energy and the carried information reflecting the measured information can be measured.
In this way, when the display apparatus 100 enters the display state, the current theoretical display luminance X1 of the display apparatus 100 can be acquired, and the light sensation intensity X2 of the second light L2 reflected back to the first light L1 of the display apparatus 100 via the specular reflection surface 200 in the black state environment is detected by the light sensation detection unit 150 at the theoretical display luminance X1.
Moreover, considering that there may be a part of the light intensity loss of the first light L1 and the second light L2 during the transmission process, the light sensation intensity X2 of the reflected second light L2 is different from the actual light sensation receiving intensity X3, and in order to compensate for the part of the different intensity, in one possible implementation, for the sub-step S112, the light path attenuation coefficient Y for the light sensation intensity may be determined according to the distance d between the display apparatus 100 and the specular reflection surface 200. The inventor finds that the light intensity loss is mainly related to the distance d between the display device 100 and the specular reflection surface 200, and the specific correspondence can be measured according to practical tests. Therefore, the light sensation intensity X2 can be converted into the light sensation receiving brightness X3 corresponding to the theoretical display brightness X1 according to the light path attenuation coefficient Y, that is, the light sensation receiving intensity X3 can reflect the actual display brightness of the current display device 100.
In this way, in step S120, the brightness adjustment corresponding relationship may be established according to the light-sensing received brightness X3 corresponding to the plurality of theoretical display brightness X1, that is, the brightness adjustment corresponding relationship may include corresponding relationships between different theoretical display brightness X1 and light-sensing received brightness X3.
In one possible implementation manner, regarding step S120, in an implementation manner of adjusting the display brightness of the display device 100 based on the brightness adjustment corresponding relationship, please refer to fig. 4, which can be implemented by the following exemplary sub-steps, which are described in detail below.
In sub-step S121, the current theoretical display brightness of the display device 100 is obtained.
And a substep S122 of obtaining the actual display brightness before adjustment corresponding to the current theoretical display brightness according to the brightness adjustment corresponding relation.
And a substep S123 of adjusting the brightness of the display device 100 according to the current theoretical display brightness and the actual display brightness before adjustment, so that the adjusted actual display brightness matches the current theoretical display brightness.
For example, as an alternative example, the compensation voltage of the pixel unit of the display device 100 may be determined according to the current theoretical display brightness and the actual display brightness before adjustment, for example, a first gray scale value corresponding to the current theoretical display brightness and a second gray scale value corresponding to the actual display brightness before adjustment may be calculated, then a first voltage corresponding to the first gray scale value and a second voltage corresponding to the second gray scale value may be determined according to a mapping relationship between gray scales and data voltages, so that the compensation voltage of the pixel unit of the display device 100 is determined according to the first voltage and the second voltage, and then the target voltage output to the pixel unit is adjusted according to the compensation voltage of the pixel unit.
For example, in order to avoid a situation that a voltage is raised excessively instantaneously to cause a circuit abnormality, in the process of adjusting the target voltage output to the pixel unit, a traversal adjustment manner may be adopted in this embodiment, for example, the current voltage of the pixel unit may be used as an initial node, and the target voltage output to the pixel unit may be traversed and adjusted within the compensation voltage range of the pixel unit until the adjusted actual display luminance matches the current theoretical display luminance.
It is worth mentioning that the first voltage may include a first data voltage Vdata and a first power voltage ELVDD, and the second voltage may include a second data voltage Vdata and a second power voltage ELVDD.
In this embodiment, the display device 100 may include a power supply circuit and a pixel unit, for example, the pixel unit may include a power supply signal input terminal that receives a data signal through a data line and a data signal input terminal that receives a power supply signal through a power supply signal line.
In this embodiment, the display device 100 may be configured with a brightness compensation unit, and the brightness compensation unit may be implemented in a form of a software program or a form of a circuit structure, which is not limited specifically. Illustratively, the luminance compensation unit may calculate the compensation voltage Δ ELVDD of the first and second power voltages ELVDD and the compensation voltage Δ Vdata of the first and second data voltages Vdata, so that the target voltage Vdata and the target voltage ELVDD output to the pixel unit may be obtained according to the compensation voltage Δ Vdata and the compensation voltage Δ ELVDD.
For example, the luminance compensation unit may obtain a target voltage Vdata and a target voltage ELVDD required for the pixel unit to normally emit light from the compensation voltage Δ Vdata and the compensation voltage Δ ELVDD, which are respectively output to the data line and the power signal line, and supplied to the data signal input terminal and the power signal input terminal of the pixel unit through the data line and the power signal line, for the corresponding pixel unit to emit light.
Therefore, in the brightness adjustment process, the display brightness of the display device 100 may be adjusted based on the brightness adjustment corresponding relationship, so that the adjusted display brightness is closer to the corresponding theoretical display brightness to reach or approach the expected theoretical brightness level, thereby effectively delaying the brightness attenuation.
Based on the same inventive concept, please refer to fig. 5, which illustrates a functional module schematic diagram of the brightness adjusting apparatus 110 provided in the embodiment of the present application, and the embodiment may divide the functional module of the brightness adjusting apparatus 110 according to the embodiment of the brightness adjusting method of the foregoing embodiment. For example, the functional blocks may be divided for the respective functions, or two or more functions may be integrated into one processing block. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. For example, in the case of dividing each function module according to each function, the brightness adjusting device 110 shown in fig. 5 is only a schematic device. The brightness adjusting apparatus 110 may include an obtaining module 111 and an adjusting module 112, and the functions of the functional modules of the brightness adjusting apparatus 110 are described in detail below.
The obtaining module 111 is configured to obtain a theoretical display brightness of the display apparatus 100 and a corresponding light sensing receiving brightness, where the light sensing receiving brightness is a specular reflection brightness detected by the light sensing unit 150 in the black state of the display apparatus 100. It is to be understood that the obtaining module 111 may be configured to perform the step S110, and as to the detailed implementation of the obtaining module 111, reference may be made to what is described above with respect to the step S110.
The adjusting module 112 is configured to establish a brightness adjustment corresponding relationship of the display apparatus 100 according to the theoretical display brightness and the corresponding light-sensing receiving brightness, so as to adjust the display brightness of the display apparatus 100 based on the brightness adjustment corresponding relationship. It is understood that the adjusting module 112 can be used to perform the step S120, and for the detailed implementation of the adjusting module 112, reference can be made to the above description of the step S120.
In a possible implementation, the obtaining module 111 may specifically be configured to:
when the display apparatus 100 is in the black state environment, obtaining theoretical display brightness of the display apparatus 100, and detecting, by the light sensation detecting unit 150, light sensation intensity of a second light ray that reflects the first light ray of the display apparatus 100 back through the specular reflection surface 200 in the black state environment under the theoretical display brightness;
and calculating to obtain light sensation receiving brightness corresponding to the theoretical display brightness according to the light sensation intensity.
In a possible implementation, the obtaining module 111 may specifically be configured to:
determining an optical path attenuation coefficient for the light sensation intensity according to the distance between the display apparatus 100 and the specular reflection surface 200;
and converting the light sensation intensity into light sensation receiving brightness corresponding to the theoretical display brightness according to the light path attenuation coefficient.
In a possible implementation, the adjusting module 112 may be specifically configured to:
acquiring a current theoretical display brightness of the display device 100;
acquiring actual display brightness before adjustment corresponding to the current theoretical display brightness according to the brightness adjustment corresponding relation;
the brightness of the display device 100 is adjusted based on the current theoretical display brightness and the actual display brightness before adjustment.
In a possible implementation, the adjusting module 112 may be specifically configured to:
determining a compensation voltage of a pixel unit of the display device 100 according to the current theoretical display brightness and the actual display brightness before adjustment;
and adjusting the target voltage output to the pixel unit according to the compensation voltage of the pixel unit.
In a possible implementation, the adjusting module 112 may be specifically configured to:
calculating a first gray scale value corresponding to the current theoretical display brightness and a second gray scale value corresponding to the actual display brightness before adjustment;
determining a first voltage corresponding to the first gray scale value and a second voltage corresponding to the second gray scale value according to the mapping relation between the gray scale and the data voltage;
the compensation voltage of the pixel unit of the display device 100 is determined according to the first voltage and the second voltage.
In a possible implementation, the adjusting module 112 may be specifically configured to:
and traversing and adjusting the target voltage output to the pixel unit within the compensation voltage range of the pixel unit by taking the current voltage of the pixel unit as an initial node until the actual display brightness before adjustment is matched with the current theoretical display brightness.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. Furthermore, all of the modules may be implemented in a form called by software through the processing element, or may be implemented in a form called by hardware, or some of the modules may be implemented in a form called by software through the processing element, or some of the modules may be implemented in a form called by hardware. For example, the obtaining module 111 and the adjusting module 112 may be separate processing elements, or may be integrated in a chip of the above apparatus, or may be stored in a storage medium in the form of program codes, and the functions of the obtaining module 111 and the adjusting module 112 may be called and executed by a certain processing element. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
Based on the same inventive concept, please refer to fig. 6, which shows a schematic block diagram of a display device 100 for performing the brightness adjusting method, provided in an embodiment of the present application, where the display device 100 may include a brightness adjusting apparatus 110, a machine-readable storage medium 120, and a processor 130.
In this embodiment, the machine-readable storage medium 120 and the processor 130 may be located in the display device 100 separately. However, it should be understood that the machine-readable storage medium 120 may be separate from the display device 100 and may be accessed by the processor 130 through a bus interface. Alternatively, the machine-readable storage medium 120 may be integrated into the processor 130, e.g., may be a cache and/or general purpose registers.
The brightness adjustment apparatus 110 may include software functional modules (such as the obtaining module 111 and the adjusting module 112 shown in fig. 5) stored in the machine-readable storage medium 120, when the processor 130 executes the software functional modules in the brightness adjustment apparatus 110, so as to implement the brightness adjustment method provided by the foregoing method embodiment.
Since the display device 100 provided in the embodiment of the present application is another implementation form of the method embodiment of the brightness adjustment method, and the display device 100 can be used to execute the brightness adjustment method provided in the method embodiment, specific description and technical effects that can be obtained refer to the method embodiment, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments described above are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application, but is merely representative of selected embodiments of the application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. Moreover, all other embodiments that can be made available by a person skilled in the art without making any inventive step based on the embodiments of the present application shall fall within the scope of protection of the present application.
Claims (8)
1. A brightness adjusting method is applied to a display device, the display device comprises a light sensation detection unit, and the method comprises the following steps:
placing the display equipment in a closed box, covering a box cover to enable the display equipment to be in a black state environment, and arranging a mirror coating on one surface, close to the display equipment, of the box cover so as to form a mirror reflection surface;
acquiring theoretical display brightness of the display equipment and corresponding light sensation receiving brightness, wherein the light sensation receiving brightness is specular reflection brightness detected by the display equipment through the light sensation detection unit in a black state environment; the light sensation receiving brightness represents actual display brightness which is different from theoretical display brightness along with the change of time;
establishing a brightness adjustment corresponding relation of the display equipment according to the theoretical display brightness and the corresponding light sensation receiving brightness, and adjusting the display brightness of the display equipment based on the brightness adjustment corresponding relation; the brightness adjustment corresponding relation is used for representing the light sensation receiving brightness corresponding to each different theoretical display brightness;
wherein the adjusting the display brightness of the display device based on the brightness adjustment correspondence includes:
acquiring the current theoretical display brightness of the display equipment;
acquiring actual display brightness before adjustment corresponding to the current theoretical display brightness according to the brightness adjustment corresponding relation; the actual display brightness before adjustment is the light sensing receiving brightness which is recorded in the brightness adjustment corresponding relation and corresponds to the current theoretical display brightness; and adjusting the brightness of the display equipment according to the current theoretical display brightness and the actual display brightness before adjustment, so that the adjusted actual display brightness is matched with the current theoretical display brightness.
2. The method as claimed in claim 1, wherein the step of obtaining the theoretical display brightness and the corresponding light-sensing reception brightness of the display device comprises:
when the display device is in a black state environment, acquiring theoretical display brightness of the display device, and detecting light sensation intensity of second light reflected back to a first light of the display device through a mirror reflection surface in the black state environment by the light sensation detection unit under the theoretical display brightness;
and calculating to obtain light sensation receiving brightness corresponding to the theoretical display brightness according to the light sensation intensity.
3. The method as claimed in claim 2, wherein the step of calculating the light sensation receiving brightness corresponding to the theoretical display brightness according to the light sensation intensity comprises:
determining a light path attenuation coefficient for the light sensation intensity according to the distance between the display device and the specular reflection surface;
and converting the light sensation intensity into light sensation receiving brightness corresponding to the theoretical display brightness according to the light path attenuation coefficient.
4. The brightness adjusting method according to claim 1, wherein the adjusting the brightness of the display device according to the current theoretical display brightness and the actual display brightness before adjustment comprises:
determining the compensation voltage of a pixel unit of the display equipment according to the current theoretical display brightness and the actual display brightness before adjustment;
and adjusting the target voltage output to the pixel unit according to the compensation voltage of the pixel unit.
5. The method according to claim 4, wherein the step of determining the compensation voltage of the pixel unit of the display device according to the current theoretical display brightness and the actual display brightness before the adjustment comprises:
calculating a first gray scale value corresponding to the current theoretical display brightness and a second gray scale value corresponding to the actual display brightness before adjustment;
determining a first voltage corresponding to the first gray scale value and a second voltage corresponding to the second gray scale value according to a mapping relation between gray scales and data voltages;
and determining a compensation voltage of a pixel unit of the display device according to the first voltage and the second voltage.
6. The method of claim 4, wherein the step of adjusting the target voltage output to the pixel unit according to the compensation voltage of the pixel unit comprises:
and traversing and adjusting the target voltage output to the pixel unit within the compensation voltage range of the pixel unit by taking the current voltage of the pixel unit as an initial node until the actual display brightness before adjustment is matched with the current theoretical display brightness.
7. A brightness adjusting device is applied to a display device, the display device comprises a light sensation detection unit, and the brightness adjusting device comprises:
the acquisition module is used for placing the display equipment in a closed box, covering a box cover to enable the display equipment to be in a black state environment, and arranging a mirror surface coating on one surface, close to the display equipment, of the box cover so as to form a mirror surface reflection surface; acquiring theoretical display brightness of the display equipment and corresponding light sensation receiving brightness, wherein the light sensation receiving brightness is specular reflection brightness detected by the display equipment through the light sensation detection unit in a black state environment;
the adjusting module is used for establishing a brightness adjusting corresponding relation of the display equipment according to the theoretical display brightness and the corresponding light sensing receiving brightness so as to adjust the display brightness of the display equipment based on the brightness adjusting corresponding relation; the brightness adjustment corresponding relation is used for representing the light sensation receiving brightness corresponding to each different theoretical display brightness;
wherein the adjusting module is specifically configured to:
acquiring the current theoretical display brightness of the display equipment;
acquiring actual display brightness before adjustment corresponding to the current theoretical display brightness according to the brightness adjustment corresponding relation; the actual display brightness before adjustment is the light sensing receiving brightness which is recorded in the brightness adjustment corresponding relation and corresponds to the current theoretical display brightness;
and adjusting the brightness of the display equipment according to the current theoretical display brightness and the actual display brightness before adjustment, so that the adjusted actual display brightness is matched with the current theoretical display brightness.
8. A display device, comprising a machine-readable storage medium having a computer program stored therein and a processor configured to run the computer program to perform the brightness adjustment method of any one of claims 1-6.
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