CN107274833B - Brightness adjusting method, brightness regulating apparatus, display module and display device - Google Patents
Brightness adjusting method, brightness regulating apparatus, display module and display device Download PDFInfo
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- CN107274833B CN107274833B CN201710640111.2A CN201710640111A CN107274833B CN 107274833 B CN107274833 B CN 107274833B CN 201710640111 A CN201710640111 A CN 201710640111A CN 107274833 B CN107274833 B CN 107274833B
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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]
- G09G3/3225—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] using an active matrix
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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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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- Transforming Electric Information Into Light Information (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Picture Signal Circuits (AREA)
Abstract
The present invention provides a kind of brightness adjusting method, brightness regulating apparatus, display module and display device.This method includes detecting current environmental light brightness；Current maximum norm group brightness corresponding with current environmental light brightness is inquired from the first corresponding relationship；According to current maximum norm group brightness and pre-set standard gamma curve, corresponding second corresponding relationship of current maximum norm group brightness is established；According to specified current gray, the specified grayscale of standard gamma curve corresponding with specified current gray is inquired from the second corresponding relationship；The specified grayscale of standard gamma curve is sent to driving circuit, so that driving circuit drives display module to be shown according to the specified grayscale of standard gamma curve.Present invention saves memory resources.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of brightness adjusting method, brightness regulating apparatus, display module
And display device.
Background technique
With the development of display technology, active matrix organic light-emitting diode (Active-matrix organic light
Emitting diode, abbreviation AMOLED) display device using more and more extensive.Since AMOLED display device is that actively have
Source shine, therefore its brightness regulation get up it is complex.
In the prior art, a plurality of gamma curve can be preset, and counted again according to pre-set a plurality of gamma curve
A plurality of gamma curve is calculated, and above-mentioned pre-set and calculated a plurality of gamma curve is stored.Carry out
When brightness regulation, corresponding gamma curve can be chosen from a plurality of gamma curve of storage to achieve the purpose that adjust brightness.
In the prior art, due to needing to store a plurality of gamma curve, to waste register resources.
Summary of the invention
The present invention provides a kind of brightness adjusting method, brightness regulating apparatus, display module and display device, posts for saving
Memory resource.
To achieve the above object, the present invention provides a kind of brightness adjusting methods, comprising:
Detect current environmental light brightness；
Inquire current maximum norm group brightness corresponding with current environmental light brightness from the first corresponding relationship, described first
Corresponding relationship includes the corresponding relationship of environmental light brightness and maximum norm group brightness；
According to current maximum norm group brightness and pre-set standard gamma curve, current maximum norm group brightness pair is established
The second corresponding relationship answered, second corresponding relationship include the corresponding current gray of current mould group brightness and current mould group brightness
Corresponding relationship between the grayscale of corresponding standard gamma curve；
According to specified current gray, standard Gamma corresponding with specified current gray is inquired from the second corresponding relationship
The specified grayscale of curve；
The specified grayscale of standard gamma curve is sent to driving circuit, so that driving circuit is according to standard gamma curve
Specified grayscale driving display module shown.
Optionally, the current maximum norm group brightness of the basis and pre-set standard gamma curve are established current maximum
Corresponding second corresponding relationship of mould group brightness includes:
According to the corresponding current mould group brightness of the different current grays of current maximum norm group brightness generation；
By standard gamma curve, different current mould groups are generated according to the corresponding current mould group brightness of different current grays
The grayscale of the corresponding standard gamma curve of brightness；
According to the corresponding standard Gamma song of the corresponding current gray of different currently mould group brightness and Bu Tong current mould group brightness
The grayscale of line establishes corresponding second corresponding relationship of current maximum norm group brightness.
Optionally, the corresponding current mould group brightness packet of the different current grays of the current maximum norm group brightness generation of the basis
It includes:
Pass through formulaIt is bright according to the corresponding current mould group of the different grayscale of current maximum norm group brightness generation
Degree, wherein Y is current maximum norm group brightness, and G is current gray, YGFor the corresponding current mould group brightness of different grayscale, A is aobvious
The maximum gray value of showing device.
Optionally, described by standard gamma curve, it is generated not according to the corresponding current mould group brightness of different current grays
With current mould group brightness, the grayscale of corresponding standard gamma curve includes:
Pass through the corresponding formula of standard gamma curveAccording to the corresponding current mould group of different current grays
Luminance meter calculates the grayscale of the corresponding standard gamma curve of different currently mould group brightness, wherein GBFor standard gamma curve
Grayscale, YGFor the corresponding current mould group brightness of different current grays, YBFor the corresponding maximum norm group brightness of standard environment brightness, A
For the maximum gray value of display device.
Optionally, described by standard gamma curve, it is generated not according to the corresponding current mould group brightness of different current grays
With current mould group brightness after the grayscale of corresponding standard gamma curve further include:
Judgement generates the grayscale and pre-set theoretical value of the corresponding standard gamma curve of different currently mould group brightness
The absolute value of difference is no to be less than or equal to given threshold；
If judge that difference is less than or equal to given threshold, execution is described to work as according to different current mould group brightness are corresponding
Preceding grayscale and the Bu Tong grayscale of the corresponding standard gamma curve of current mould group brightness establish current maximum norm group brightness corresponding the
The step of two corresponding relationships；
The step of detecting current environmental light brightness if judge that difference is less than or equal to given threshold, described in execution.
To achieve the above object, the present invention provides a kind of brightness regulating apparatus, comprising:
Detection module, for detecting current environmental light brightness；
First enquiry module, for inquiring current maximum corresponding with current environmental light brightness from the first corresponding relationship
Mould group brightness, first corresponding relationship include the corresponding relationship of environmental light brightness and maximum norm group brightness；
Module is established, for establishing currently most according to current maximum norm group brightness and pre-set standard gamma curve
Corresponding second corresponding relationship of big mould group brightness, second corresponding relationship include the corresponding current gray of current mould group brightness and
The currently corresponding relationship between the grayscale of the corresponding standard gamma curve of mould group brightness；
Second enquiry module, for according to current gray is specified, being inquired from the second corresponding relationship and specified current ash
The specified grayscale of the corresponding standard gamma curve of rank；
Sending module, for the specified grayscale of standard gamma curve to be sent to driving circuit, for driving circuit according to
The specified grayscale driving display module of standard gamma curve is shown.
Optionally, the module of establishing includes:
First generates submodule, for according to the corresponding current mould group of the different current grays of current maximum norm group brightness generation
Brightness；
Second generates submodule, bright according to the corresponding current mould group of different current grays for passing through standard gamma curve
Degree generates the grayscale of the corresponding standard gamma curve of different currently mould group brightness；
Setting up submodule, for according to the corresponding current gray of different currently mould group brightness and Bu Tong current mould group brightness pair
The grayscale for the standard gamma curve answered establishes corresponding second corresponding relationship of current maximum norm group brightness.
Optionally, the first generation submodule is for passing through formulaIt is bright according to current maximum norm group
The corresponding current mould group brightness of the different grayscale of degree generation, wherein Y is current maximum norm group brightness, and G is current gray, YGFor not
The corresponding current mould group brightness with grayscale, A are the maximum gray value of display device.
Optionally, described second submodule is generated for passing through the corresponding formula of standard gamma curve
The corresponding standard gamma curve of different currently mould group brightness is calculated according to the corresponding current mould group luminance meter of different current grays
Grayscale, wherein GBFor the grayscale of standard gamma curve, YGFor the corresponding current mould group brightness of different current grays, YBFor standard
The corresponding maximum norm group brightness of environmental light brightness, A are the maximum gray value of display device.
Optionally, further includes:
Judgment module, for judging the grayscale of the corresponding standard gamma curve of different current mould group brightness and presetting
Theoretical value difference absolute value it is no be less than or equal to given threshold；If judge that difference is less than or equal to given threshold,
It triggers the setting up submodule and executes that described according to the corresponding current gray of different current mould group brightness and Bu Tong currently mould group is bright
Spend the step of grayscale of corresponding standard gamma curve establishes current maximum norm group brightness corresponding second corresponding relationship；If sentencing
It is disconnected go out difference when being less than or equal to given threshold, trigger the detection module execute described in detect the step of current environmental light brightness
Suddenly.
Beneficial effects of the present invention:
Brightness adjusting method provided by the present invention, brightness regulating apparatus, display module and display device technical solution
In, current maximum norm group brightness corresponding is established according to current maximum norm group brightness and pre-set standard gamma curve
Two corresponding relationships inquire standard corresponding with specified current gray according to specified current gray from the second corresponding relationship
The specified grayscale of gamma curve, so that driving circuit drives display module to be shown according to the specified grayscale of standard gamma curve
Show, the present embodiment only needs a standard gamma curve that the adjusting to display module brightness can be realized, a plurality of without storing
Gamma curve, to save register resources.
Detailed description of the invention
Fig. 1 is a kind of flow chart for brightness adjusting method that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow chart of brightness adjusting method provided by Embodiment 2 of the present invention；
Fig. 3 is the schematic diagram of two Plays gamma curve of embodiment；
Fig. 4 is a kind of structural schematic diagram for brightness regulating apparatus that the embodiment of the present invention three provides；
Fig. 5 is a kind of structural schematic diagram for brightness regulating apparatus that the embodiment of the present invention four provides.
Specific embodiment
To make those skilled in the art more fully understand technical solution of the present invention, the present invention is mentioned with reference to the accompanying drawing
Brightness adjusting method, brightness regulating apparatus, display module and the display device of confession are described in detail.
Fig. 1 is a kind of flow chart for brightness adjusting method that the embodiment of the present invention one provides, as shown in Figure 1, this method packet
It includes:
Step 101 detects current environmental light brightness.
Step 102 inquires current maximum norm group brightness corresponding with current environmental light brightness from the first corresponding relationship,
First corresponding relationship includes the corresponding relationship of environmental light brightness and maximum norm group brightness.
Step 103, according to current maximum norm group brightness and pre-set standard gamma curve, establish current maximum norm
Corresponding second corresponding relationship of group brightness, second corresponding relationship include the corresponding current gray of current mould group brightness and current
Corresponding relationship between the grayscale of the corresponding standard gamma curve of mould group brightness.
Step 104, basis specify current gray, and mark corresponding with specified current gray is inquired from the second corresponding relationship
The specified grayscale of quasi- gamma curve.
The specified grayscale of standard gamma curve is sent to driving circuit by step 105, so that driving circuit is according to standard
The specified grayscale driving display module of gamma curve is shown.
In the technical solution of brightness adjusting method provided in this embodiment, according to current maximum norm group brightness and preset
Standard gamma curve establish corresponding second corresponding relationship of current maximum norm group brightness, according to specified current gray from second
The specified grayscale of standard gamma curve corresponding with specified current gray is inquired in corresponding relationship, for driving circuit according to
The specified grayscale driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The adjusting to display module brightness is realized, without storing a plurality of gamma curve, to save register resources.Using this reality
The scheme for applying example makes brightness regulation process convenience and high-efficiency and can easily be accommodated.
Fig. 2 is a kind of flow chart of brightness adjusting method provided by Embodiment 2 of the present invention, as shown in Fig. 2, this method packet
It includes:
Step 201, setting standard gamma curve.
In the present embodiment, standard gamma curve need to be preset out.Fig. 3 is showing for two Plays gamma curve of embodiment
It is intended to, as shown in figure 3, the abscissa of standard gamma curve is grayscale, ordinate is the brightness of mould group.It is corresponding when grayscale is 255
Mould group brightness be the brightness of maximum norm group.Standard gamma curve complies with standard curve requirement, and Gamma is bent in standard curve requirement
The Gamma value of line may range from 2.0 to 2.4.Preferably, Gamma value is 2.2, which is to meet human eye
The value of gamma curve.Standard gamma curve is the corresponding Gamma of standard environment light.Under standard environment brightness, mould group
Brightness meets the standard gamma curve with the variation of grayscale.Above-mentioned standard environmental light brightness is an environment light being artificially arranged
The section of brightness, the environmental light brightness in the section are arranged to standard environment brightness.In the present embodiment, a register pair
Ying Yuyi grayscale can be stored with the corresponding mould group brightness of a grayscale in each register.
Step 202, the first corresponding relationship of setting, first corresponding relationship includes environmental light brightness and maximum norm group brightness
Corresponding relationship.
In the present embodiment, need to preset the first corresponding relationship.Preferably, which can look into for first
Table is looked for, i.e. the first corresponding relationship is configured in the form of a lookup table.Specifically, the first look-up table can be display look-up table
(Look-Up-Table), abbreviation LUT).Wherein, the brightness of maximum norm group is the corresponding brightness of 255 grayscale of display module.First
Look-up table can be found in shown in the following table 1.
Table 1
| Environmental light brightness | Maximum norm group brightness |
| A11-A19 | Y1 |
| …… | …… |
| A101-A109 | Y10 |
As can be seen from Table 1, environmental light brightness is divided into multiple sections, all environmental light brightness in each section are equal
Corresponding to a maximum norm group brightness.
Preferably, the environmental light brightness in the first look-up table and the brightness of maximum norm group can be numerical data, for example, two into
Data processed, numerical data can be stored as 10bit data according to the size of memory capacity or greater than the data of 10bit.First searches
Table, which carries out storage using numerical data, can save storage resource.
Step 203 detects current environmental light brightness.
In the present embodiment, this step can be executed by detection module, it is preferable that detection module can be light sensor.
Light sensor senses current environmental light brightness.The current environmental light brightness detected is analogue data, needs to detect at this time
The current environmental light brightness of the analogue data format is converted to the current environmental light brightness of digital data format by module, at this time when
Preceding environmental light brightness is numerical data, and the subsequent current environmental light brightness that digital data format can be used executes subsequent step.This
In embodiment, detection module may include analog-digital converter (Analog-to-Digital Converter, abbreviation ADC), by modulus
Converter executes the current environment light that the above-mentioned current environmental light brightness by the analogue data format is converted to digital data format
The step of brightness.
Step 204 inquires current maximum norm group brightness corresponding with current environmental light brightness from the first corresponding relationship.
It, can be by inquiring and working as from the first look-up table shown in above-mentioned table 1 when detecting current environmental light brightness
The corresponding current maximum norm group brightness of preceding environmental light brightness.
Step 205 generates the corresponding current mould group brightness of different current grays according to current maximum norm group brightness.
Specifically, formula can be passed throughIt is corresponding that different grayscale are generated according to current maximum norm group brightness
Current mould group brightness, wherein Y is current maximum norm group brightness, and G is current gray, YGFor the corresponding current mould group of different grayscale
Brightness, A are the maximum gray value of display device.For example, when display device is shown using 256 grayscale, then display device
Maximum gray value be 255, i.e. A be 255.Formula can be at this timeIn formula the value range of G be 0 to
When 255, the current maximum norm group brightness inquired in step 204 is substituted into above-mentioned formula, the value range of above-mentioned G is calculated
In the corresponding current mould group brightness of each current gray, wherein the calculated Y when G is 255GEqual to Y.In practical applications,
When display device is shown using other grayscale, A can also be other values, will not enumerate herein.
Step 206 passes through standard gamma curve, is generated according to the corresponding current mould group brightness of different current grays different
The currently grayscale of the corresponding standard gamma curve of mould group brightness.
Specifically, the corresponding formula of standard gamma curve can be passed throughIt is corresponding according to different current grays
Current mould group luminance meter calculate the grayscale of the corresponding standard gamma curve of different current mould group brightness, wherein GBFor standard
The grayscale of gamma curve, YGFor the corresponding current mould group brightness of different current grays, YBIt is corresponding most for standard environment brightness
Big mould group brightness, A are the maximum gray value of display device.In the present embodiment, display device is shown using 256 grayscale
When, then the maximum gray value of display device is 255, i.e. A is 255.Formula can be at this time
Step 207, according to the corresponding current gray of different current mould group brightness and the Bu Tong current corresponding mark of mould group brightness
The grayscale of quasi- gamma curve establishes corresponding second corresponding relationship of current maximum norm group brightness, which includes working as
Corresponding pass between the preceding corresponding current gray of mould group brightness and the grayscale of the corresponding standard gamma curve of current mould group brightness
System.
In the present embodiment, it is preferable that the second corresponding relationship can be second look-up table, i.e., the second corresponding relationship is with look-up table
Form be configured.Specifically, second look-up table can be display look-up table (Look-Up-Table), abbreviation LUT).
Step 208, basis specify current gray, and mark corresponding with specified current gray is inquired from the second corresponding relationship
The specified grayscale of quasi- gamma curve.
Wherein, specified current gray can need any current gray to be shown for display device.
The specified grayscale of standard gamma curve is sent to driving circuit by step 209, so that driving circuit is according to standard
The specified grayscale driving display module of gamma curve is shown.
In the present embodiment, driving circuit can be drive integrated circult (Driver IC).
It is optionally, subsequent when environmental light brightness changes in the present embodiment, it repeats and executes step 203 to step
209。
In the present embodiment, optionally, since all environmental light brightness in each section in the first mapping table are corresponding
In a maximum norm group brightness, therefore the environmental light brightness pair after variation can be obtained after executing the step 203 and step 204
The maximum norm group brightness answered, if the corresponding current maximum norm group brightness of environmental light brightness after variation and the environment bright before variation
It is identical to spend corresponding current maximum norm group brightness, then corresponding second corresponding relationship of the current maximum norm group brightness is constant, this
When no longer need to execute step 205 to step 207, and directly execute step 208.It further include depositing after step 207 in such situation
Store up corresponding second corresponding relationship of current maximum norm group brightness.Then, environment after environmental light brightness changes and changes
When the corresponding current maximum norm group brightness of brightness is with the environmental light brightness corresponding current maximum norm group brightness difference before variation,
Obtain the second corresponding relationship corresponding with the environmental light brightness after the variation, the current maximum norm group stored before deleting at this time is bright
Spend corresponding second corresponding relationship.
It further, can also include: that judgement generates the different currently corresponding standards of mould group brightness after step 206
The absolute value of the difference of the grayscale of gamma curve and pre-set theoretical value is no to be less than or equal to given threshold；If judging
Difference is less than or equal to given threshold, then continues to execute step 207；When judging that difference is greater than given threshold, then continue to execute
Step 203.
Wherein, if judge difference be less than or equal to given threshold, show that theoretical value and calculated value difference are smaller, at this time without
The process for calculating the grayscale of the corresponding standard gamma curve of different currently mould group brightness need to be re-executed；If judging, difference is big
In given threshold, show that theoretical value and calculated value difference are larger, needs to re-execute the different current mould group brightness correspondences of calculating at this time
Standard gamma curve grayscale process.
In the technical solution of brightness adjusting method provided in this embodiment, according to current maximum norm group brightness and preset
Standard gamma curve establish corresponding second corresponding relationship of current maximum norm group brightness, according to specified current gray from second
The specified grayscale of standard gamma curve corresponding with specified current gray is inquired in corresponding relationship, for driving circuit according to
The specified grayscale driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The adjusting to display module brightness is realized, without storing a plurality of gamma curve, to save register resources.Using this reality
The scheme for applying example makes brightness regulation process convenience and high-efficiency and can easily be accommodated.
Fig. 4 is a kind of structural schematic diagram for brightness regulating apparatus that the embodiment of the present invention three provides, as shown in figure 4, the dress
To set include: detection module 11, the first enquiry module 12, establishes module 13, the second enquiry module 14 and sending module 15.
Detection module 11 is for detecting current environmental light brightness.First enquiry module 12 is used for from the first corresponding relationship
Inquire current maximum norm group brightness corresponding with current environmental light brightness, first corresponding relationship include environmental light brightness and
The corresponding relationship of maximum norm group brightness.Module 13 is established for according to current maximum norm group brightness and pre-set standard
Gamma curve, establishes corresponding second corresponding relationship of current maximum norm group brightness, and second corresponding relationship includes current mould group
Corresponding relationship between the corresponding current gray of brightness and the grayscale of the corresponding standard gamma curve of current mould group brightness.Second
Enquiry module 14 is used to inquire standard corresponding with specified current gray from the second corresponding relationship according to current gray is specified
The specified grayscale of gamma curve.Sending module 15 is used to the specified grayscale of standard gamma curve being sent to driving circuit, with
Display module is driven to be shown according to the specified grayscale of standard gamma curve for driving circuit.
Brightness regulating apparatus provided in this embodiment can be used for realizing the brightness adjusting method that above-described embodiment one provides.
In the technical solution of brightness regulating apparatus provided in this embodiment, according to current maximum norm group brightness and preset
Standard gamma curve establish corresponding second corresponding relationship of current maximum norm group brightness, according to specified current gray from second
The specified grayscale of standard gamma curve corresponding with specified current gray is inquired in corresponding relationship, for driving circuit according to
The specified grayscale driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The adjusting to display module brightness is realized, without storing a plurality of gamma curve, to save register resources.Using this reality
The scheme for applying example makes brightness regulation process convenience and high-efficiency and can easily be accommodated.
Fig. 5 is a kind of structural schematic diagram for brightness regulating apparatus that the embodiment of the present invention four provides, as shown in figure 5, this reality
Example is applied on the basis of above-described embodiment three, establishing module 13 includes that the first generation submodule 131, second generates submodule 132
With setting up submodule 133.First, which generates submodule 131, is used to be corresponded to according to the different current grays of current maximum norm group brightness generation
Current mould group brightness.Second, which generates submodule 132, is used for through standard gamma curve, corresponding according to different current grays
Current mould group brightness generates the grayscale of the corresponding standard gamma curve of different currently mould group brightness.Setting up submodule 133 is used for root
It is built according to the corresponding current gray of different currently mould group brightness and the grayscale of the Bu Tong corresponding standard gamma curve of current mould group brightness
Found corresponding second corresponding relationship of current maximum norm group brightness.
Further, the first generation submodule 131 is for passing through formulaIt is bright according to current maximum norm group
The corresponding current mould group brightness of the different grayscale of degree generation, wherein Y is current maximum norm group brightness, and G is current gray, YGFor not
The corresponding current mould group brightness with grayscale, A are the maximum gray value of display device.
Further, second submodule 132 is generated for passing through the corresponding formula of standard gamma curve
The corresponding standard gamma curve of different currently mould group brightness is calculated according to the corresponding current mould group luminance meter of different current grays
Grayscale, wherein GBFor the grayscale of standard gamma curve, YGFor the corresponding current mould group brightness of different current grays, YBFor standard
The corresponding maximum norm group brightness of environmental light brightness, A are the maximum gray value of display device.
Further, device further include: judgment module 16.Judgment module 16 is for judging different current mould group brightness pair
The absolute value of the difference of the grayscale and pre-set theoretical value for the standard gamma curve answered is no to be less than or equal to given threshold；
If judge that difference is less than or equal to given threshold, triggering setting up submodule 133 executes described bright according to different current mould groups
It spends corresponding current gray and Bu Tong to establish current maximum norm group bright for the grayscale of the corresponding standard gamma curve of current mould group brightness
The step of spending corresponding second corresponding relationship；If judge that difference is less than or equal to given threshold, detection trigger module 11 is held
The step of current environmental light brightness is detected described in row.
In the technical solution of brightness regulating apparatus provided in this embodiment, according to current maximum norm group brightness and preset
Standard gamma curve establish corresponding second corresponding relationship of current maximum norm group brightness, according to specified current gray from second
The specified grayscale of standard gamma curve corresponding with specified current gray is inquired in corresponding relationship, for driving circuit according to
The specified grayscale driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The adjusting to display module brightness is realized, without storing a plurality of gamma curve, to save register resources.Using this reality
The scheme for applying example makes brightness regulation process convenience and high-efficiency and can easily be accommodated.
The embodiment of the present invention five provides a kind of display module, which includes brightness regulating apparatus, the brightness tune
The brightness regulating apparatus that regulating device uses above-described embodiment four to provide.
The embodiment of the present invention six provides a kind of display device, which includes driving circuit and display module, is somebody's turn to do
The display module that display module uses above-described embodiment five to provide.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of brightness adjusting method characterized by comprising
Detect current environmental light brightness；
Current maximum norm group brightness corresponding with current environmental light brightness is inquired from the first corresponding relationship, described first is corresponding
Relationship includes the corresponding relationship of environmental light brightness and maximum norm group brightness；
According to current maximum norm group brightness and pre-set standard gamma curve, it is corresponding to establish current maximum norm group brightness
Second corresponding relationship, second corresponding relationship include that the corresponding current gray of current mould group brightness and current mould group brightness are corresponding
Standard gamma curve grayscale between corresponding relationship；
According to specified current gray, standard gamma curve corresponding with specified current gray is inquired from the second corresponding relationship
Specified grayscale；
The specified grayscale of standard gamma curve is sent to driving circuit, so that driving circuit is according to the finger of standard gamma curve
Determine grayscale driving display module to be shown；
The current maximum norm group brightness of basis and pre-set standard gamma curve, establish current maximum norm group brightness pair
The second corresponding relationship answered includes:
According to the corresponding current mould group brightness of the different current grays of current maximum norm group brightness generation；
By standard gamma curve, different current mould group brightness are generated according to the corresponding current mould group brightness of different current grays
The grayscale of corresponding standard gamma curve；
According to the corresponding current gray of different currently mould group brightness and the Bu Tong corresponding standard gamma curve of current mould group brightness
Grayscale establishes corresponding second corresponding relationship of current maximum norm group brightness.
2. brightness adjusting method according to claim 1, which is characterized in that the current maximum norm group brightness of basis generates
The corresponding current mould group brightness of different current grays includes:
Pass through formulaThe corresponding current mould group brightness of different grayscale is generated according to current maximum norm group brightness,
Wherein, Y is current maximum norm group brightness, and G is current gray, YGFor the corresponding current mould group brightness of different grayscale, A is display dress
The maximum gray value set.
3. brightness adjusting method according to claim 1, which is characterized in that it is described by standard gamma curve, according to not
The grayscale packet of the corresponding standard gamma curve of different currently mould group brightness is generated with the corresponding current mould group brightness of current gray
It includes:
Pass through the corresponding formula of standard gamma curveAccording to the corresponding current mould group brightness of different current grays
Calculate the grayscale of the corresponding standard gamma curve of different currently mould group brightness, wherein GBFor the grayscale of standard gamma curve,
YGFor the corresponding current mould group brightness of different current grays, YBFor the corresponding maximum norm group brightness of standard environment brightness, A is aobvious
The maximum gray value of showing device.
4. brightness adjusting method according to claim 1, which is characterized in that it is described by standard gamma curve, according to not
After the grayscale for generating the corresponding standard gamma curve of different currently mould group brightness with the corresponding current mould group brightness of current gray
Further include:
Judgement generates the grayscale of the corresponding standard gamma curve of different currently mould group brightness and the difference of pre-set theoretical value
Absolute value it is no be less than or equal to given threshold；
If judge that difference is less than or equal to given threshold, execute described according to the different currently corresponding current ashes of mould group brightness
It is second pair corresponding that the grayscale of rank and the Bu Tong corresponding standard gamma curve of current mould group brightness establishes current maximum norm group brightness
The step of should being related to；
The step of detecting current environmental light brightness if judge that difference is less than or equal to given threshold, described in execution.
5. a kind of brightness regulating apparatus characterized by comprising
Detection module, for detecting current environmental light brightness；
First enquiry module, for inquiring current maximum norm group corresponding with current environmental light brightness from the first corresponding relationship
Brightness, first corresponding relationship include the corresponding relationship of environmental light brightness and maximum norm group brightness；
Module is established, for establishing current maximum norm according to current maximum norm group brightness and pre-set standard gamma curve
Corresponding second corresponding relationship of group brightness, second corresponding relationship include the corresponding current gray of current mould group brightness and current
Corresponding relationship between the grayscale of the corresponding standard gamma curve of mould group brightness；
Second enquiry module, for being inquired from the second corresponding relationship and specified current gray pair according to current gray is specified
The specified grayscale for the standard gamma curve answered；
Sending module, for the specified grayscale of standard gamma curve to be sent to driving circuit, so that driving circuit is according to standard
The specified grayscale driving display module of gamma curve is shown；
The module of establishing includes:
First generates submodule, for bright according to the corresponding current mould group of the different current grays of current maximum norm group brightness generation
Degree；
Second generates submodule, raw according to the corresponding current mould group brightness of different current grays for passing through standard gamma curve
At the grayscale of the corresponding standard gamma curve of different currently mould group brightness；
Setting up submodule, for corresponding with Bu Tong current mould group brightness according to the corresponding current gray of different currently mould group brightness
The grayscale of standard gamma curve establishes corresponding second corresponding relationship of current maximum norm group brightness.
6. brightness regulating apparatus according to claim 5, which is characterized in that the first generation submodule is for passing through public affairs
FormulaAccording to the corresponding current mould group brightness of the different grayscale of current maximum norm group brightness generation, wherein Y is to work as
Preceding maximum norm group brightness, G are current gray, YGFor the corresponding current mould group brightness of different grayscale, A is the maximum ash of display device
Rank value.
7. brightness regulating apparatus according to claim 5, which is characterized in that the second generation submodule is for passing through mark
The corresponding formula of quasi- gamma curveIt is calculated according to the corresponding current mould group luminance meter of different current grays different
The currently grayscale of the corresponding standard gamma curve of mould group brightness, wherein GBFor the grayscale of standard gamma curve, YGWork as difference
The corresponding current mould group brightness of preceding grayscale, YBFor the corresponding maximum norm group brightness of standard environment brightness, A be display device most
Big grayscale value.
8. brightness regulating apparatus according to claim 5, which is characterized in that further include:
Judgment module, for judging the grayscale and pre-set reason of the corresponding standard gamma curve of different currently mould group brightness
It is less than or equal to given threshold by the absolute value of the difference of value is no；If judge that difference is less than or equal to given threshold, triggering
The setting up submodule executes described according to the corresponding current gray of different currently mould group brightness and Bu Tong current mould group brightness pair
The grayscale for the standard gamma curve answered establishes the step of current maximum norm group brightness corresponding second corresponding relationship；If judging
When difference is less than or equal to given threshold, the step of detecting current environmental light brightness described in the detection module execution is triggered.
9. a kind of display module characterized by comprising any brightness regulating apparatus of claim 5 to 8.
10. a kind of display device, which is characterized in that including driving circuit and display module as claimed in claim 9.
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| CN108550345B (en) * | 2018-07-12 | 2020-04-21 | 成都京东方光电科技有限公司 | Gamma correction method and device, display device, computer storage medium |
| CN110264952A (en) * | 2019-06-18 | 2019-09-20 | 京东方科技集团股份有限公司 | Gamma electric voltage adjusting process and gamma electric voltage calibration apparatus |
| CN111312143B (en) * | 2020-02-28 | 2022-04-19 | 京东方科技集团股份有限公司 | Display device, driving method and driving device thereof, and computer-readable storage medium |
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| US20020030651A1 (en) * | 2000-08-23 | 2002-03-14 | Hideki Yamamoto | Display device and liquid crystal projector |
| TWI342532B (en) * | 2006-07-10 | 2011-05-21 | Himax Tech Inc | Method for generating a gamma table |
| KR101367133B1 (en) * | 2007-02-15 | 2014-02-25 | 삼성디스플레이 주식회사 | Method and driving apparatus for liquid crystal display |
| CN102013246B (en) * | 2009-09-07 | 2013-09-18 | 群康科技(深圳)有限公司 | Establishing method for gamma comparison table of display apparatus |
| CN102930850B (en) * | 2012-11-16 | 2015-07-15 | Tcl显示科技（惠州）有限公司 | GAMMA curve adjustment method and GAMMA curve adjustment system |
| CN105895051A (en) * | 2015-11-27 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Screen brightness adjustment method and device |
| CN105513565B (en) * | 2016-01-22 | 2018-04-13 | 飞依诺科技(苏州)有限公司 | The picture adjusting method and device of a kind of display |
| CN106128371B (en) * | 2016-09-08 | 2019-01-25 | 京东方科技集团股份有限公司 | A kind of device of picture brightness enhancing, display device and method |
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