CN107274833A - 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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- CN107274833A CN107274833A CN201710640111.2A CN201710640111A CN107274833A CN 107274833 A CN107274833 A CN 107274833A CN 201710640111 A CN201710640111 A CN 201710640111A CN 107274833 A CN107274833 A CN 107274833A
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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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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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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 module brightness corresponding with current environmental light brightness is inquired from the first corresponding relation；According to current maximum module brightness and the standard gamma curve pre-set, corresponding second corresponding relation of current maximum module brightness is set up；According to specified current gray, the specified GTG of standard gamma curve corresponding with specified current gray is inquired from the second corresponding relation；The specified GTG of standard gamma curve is sent to drive circuit, so that drive circuit drives display module to be shown according to the specified GTG of standard gamma curve.Present invention saves memory resource.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of brightness adjusting method, brightness regulating apparatus, display module
And display device.
Background technology
With the development of Display Technique, active matrix organic light-emitting diode (Active-matrix organic light
Emitting diode, abbreviation AMOLED) display device application it is more and more extensive.Because AMOLED display device is that actively have
What source lighted, therefore its brightness regulation gets up complex.
In the prior art, a plurality of gamma curve can be pre-set, and is counted again according to a plurality of gamma curve pre-set
A plurality of gamma curve is calculated, and above-mentioned pre-setting and a plurality of gamma curve that is calculating is stored.Carrying out
During brightness regulation, corresponding gamma curve can be chosen from a plurality of gamma curve of storage to reach the purpose of regulation brightness.
In the prior art, due to needing to store a plurality of gamma curve, so as to waste register resources.
The content of the invention
The present invention provides a kind of brightness adjusting method, brightness regulating apparatus, display module and display device, is posted for saving
Memory resource.
To achieve the above object, the invention provides a kind of brightness adjusting method, including：
Detect current environmental light brightness；
Current maximum module brightness corresponding with current environmental light brightness, described first are inquired from the first corresponding relation
Corresponding relation includes the corresponding relation of environmental light brightness and maximum module brightness；
According to current maximum module brightness and the standard gamma curve pre-set, current maximum module brightness pair is set up
The second corresponding relation answered, second corresponding relation includes the corresponding current gray of current module brightness and current module brightness
Corresponding relation between the GTG of corresponding standard gamma curve；
According to specified current gray, standard Gamma corresponding with specified current gray is inquired from the second corresponding relation
The specified GTG of curve；
The specified GTG of standard gamma curve is sent to drive circuit, so that drive circuit is according to standard gamma curve
Specified GTG driving display module shown.
Alternatively, the current maximum module brightness of the basis and the standard gamma curve pre-set, set up current maximum
Corresponding second corresponding relation of module brightness includes：
The corresponding current module brightness of different current grays is generated according to current maximum module brightness；
By standard gamma curve, different current modules are generated according to the corresponding current module brightness of different current grays
The GTG of the corresponding standard gamma curve of brightness；
According to the corresponding standard Gamma songs of the corresponding current gray of different current module brightness and Bu Tong currently module brightness
The GTG of line sets up corresponding second corresponding relation of current maximum module brightness.
Alternatively, the corresponding current module brightness bag of the different current grays of the current maximum module brightness generation of the basis
Include：
Pass through formulaThe corresponding current module of different GTGs is generated according to current maximum module brightness bright
Degree, wherein, Y is current maximum module brightness, and G is current gray, YGFor the corresponding current module brightness of different GTGs, A is aobvious
The maximum gray value of showing device.
Alternatively, it is described by standard gamma curve, generated not according to the corresponding current module brightness of different current grays
With current module brightness, the GTG of corresponding standard gamma curve includes：
Pass through the corresponding formula of standard gamma curveAccording to the corresponding current module of different current grays
Luminance meter calculates the GTG of the corresponding standard gamma curve of different currently module brightness, wherein, GBFor standard gamma curve
GTG, YGFor the corresponding current module brightness of different current grays, YBFor the corresponding maximum module brightness of standard environment brightness, A
For the maximum gray value of display device.
Alternatively, it is described by standard gamma curve, generated not according to the corresponding current module brightness of different current grays
Also include after the GTG of corresponding standard gamma curve with current module brightness：
Judge the GTG of the corresponding standard gamma curve of the different current module brightness of generation and the theoretical value that pre-sets
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 module brightness are corresponding
Preceding GTG and the Bu Tong GTG of the corresponding standard gamma curve of current module brightness set up current maximum module brightness corresponding the
The step of two corresponding relations；
If judge that difference is less than or equal to given threshold, the step of detecting current environmental light brightness described in execution.
To achieve the above object, the invention provides a kind of brightness regulating apparatus, including：
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 relation
Module brightness, first corresponding relation includes the corresponding relation of environmental light brightness and maximum module brightness；
Module is set up, for according to current maximum module brightness and the standard gamma curve pre-set, setting up currently most
Corresponding second corresponding relation of big module brightness, second corresponding relation include the corresponding current gray of current module brightness and
Corresponding relation between the GTG of the corresponding standard gamma curve of current module brightness；
Second enquiry module, for according to current gray is specified, being inquired from the second corresponding relation with specifying current ash
The specified GTG of the corresponding standard gamma curve of rank；
Sending module, for the specified GTG of standard gamma curve to be sent to drive circuit, for drive circuit according to
The specified GTG driving display module of standard gamma curve is shown.
Alternatively, the module of setting up includes：
First generation submodule, for according to the corresponding current module of the different current grays of current maximum module brightness generation
Brightness；
Second generation submodule, it is bright according to the corresponding current module of different current grays for by standard gamma curve
The GTG of the corresponding standard gamma curve of the different currently module brightness of degree generation；
Setting up submodule, for according to the corresponding current gray of different currently module brightness and Bu Tong current module brightness pair
The GTG for the standard gamma curve answered sets up corresponding second corresponding relation of current maximum module brightness.
Alternatively, the first generation submodule is used to pass through formulaIt is bright according to current maximum module
The corresponding current module brightness of the different GTGs of degree generation, wherein, Y is current maximum module brightness, and G is current gray, YGFor not
The corresponding current module brightness with GTG, A is the maximum gray value of display device.
Alternatively, the second generation submodule is used to pass through the corresponding formula of standard gamma curve
The corresponding standard gamma curve of different currently module brightness is calculated according to the corresponding current module luminance meter of different current grays
GTG, wherein, GBFor the GTG of standard gamma curve, YGFor the corresponding current module brightness of different current grays, YBFor standard
The corresponding maximum module brightness of environmental light brightness, A is the maximum gray value of display device.
Alternatively, in addition to：
Judge module, for judging the GTG of the corresponding standard gamma curve of different currently module brightness with pre-setting
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,
Trigger the setting up submodule perform it is described according to the corresponding current gray of different current module brightness and Bu Tong currently module is bright
The step of GTG for spending corresponding standard gamma curve sets up current maximum module brightness corresponding second corresponding relation；If sentencing
Break when difference less than or equal to given threshold, trigger the detection module perform 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, the technical scheme of display module and display device
In, current maximum module brightness corresponding the is set up according to current maximum module brightness and the standard gamma curve pre-set
Two corresponding relations, standard corresponding with specified current gray is inquired according to specified current gray from the second corresponding relation
The specified GTG of gamma curve, so that drive circuit drives display module to be shown according to the specified GTG of standard gamma curve
Show, the present embodiment only needs a standard gamma curve that the regulation to display module brightness can be achieved, a plurality of without storing
Gamma curve, so as to save register resources.
Brief description of the drawings
Fig. 1 is a kind of flow chart for brightness adjusting method that the embodiment of the present invention one is provided；
Fig. 2 is a kind of flow chart for brightness adjusting method that the embodiment of the present invention two is provided；
Fig. 3 is the schematic diagram of the Plays gamma curve of embodiment two；
Fig. 4 is a kind of structural representation for brightness regulating apparatus that the embodiment of the present invention three is provided；
Fig. 5 is a kind of structural representation for brightness regulating apparatus that the embodiment of the present invention four is provided.
Embodiment
To make those skilled in the art more fully understand technical scheme, the present invention is carried below in conjunction with the accompanying drawings
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 is provided, as shown in figure 1, this method bag
Include：
Step 101, detect current environmental light brightness.
Step 102, current maximum module brightness corresponding with current environmental light brightness is inquired from the first corresponding relation,
First corresponding relation includes the corresponding relation of environmental light brightness and maximum module brightness.
The current maximum module brightness of step 103, basis and the standard gamma curve pre-set, set up current maximum norm
Corresponding second corresponding relation of group brightness, second corresponding relation includes the corresponding current gray of current module brightness and current
Corresponding relation between the GTG of the corresponding standard gamma curve of module brightness.
Step 104, basis specify current gray, and mark corresponding with specified current gray is inquired from the second corresponding relation
The specified GTG of quasi- gamma curve.
Step 105, the specified GTG of standard gamma curve sent to drive circuit, so that drive circuit is according to standard
The specified GTG driving display module of gamma curve is shown.
In the technical scheme for the brightness adjusting method that the present embodiment is provided, according to current maximum module brightness and pre-set
Standard gamma curve set up corresponding second corresponding relation of current maximum module brightness, according to specified current gray from second
The specified GTG of standard gamma curve corresponding with specified current gray is inquired in corresponding relation, for drive circuit according to
The specified GTG driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The regulation to display module brightness is realized, without storing a plurality of gamma curve, so as to save register resources.Using this reality
The scheme of example is applied so that brightness regulation process convenience and high-efficiency and can easily be accommodated.
Fig. 2 is a kind of flow chart for brightness adjusting method that the embodiment of the present invention two is provided, as shown in Fig. 2 this method bag
Include：
Step 201, setting standard gamma curve.
In the present embodiment, standard gamma curve need to be pre-set out.Fig. 3 shows for the Plays gamma curve of embodiment two
It is intended to, as shown in figure 3, the abscissa of standard gamma curve is GTG, ordinate is module brightness.The correspondence when GTG is 255
Module brightness be maximum module brightness.Standard gamma curve meets standard curve requirement, and Gamma is bent in standard curve requirement
The Gamma values of line may range from 2.0 to 2.4.Preferably, Gamma values are 2.2, and the Gamma values are to meet human eye
The value of gamma curve.Standard gamma curve is the corresponding Gamma of standard environment light.Under standard environment brightness, module
Brightness meets the standard gamma curve with the change of GTG.Above-mentioned standard environmental light brightness is the ambient light artificially set
Environmental light brightness in the interval of brightness, the interval is arranged to standard environment brightness.In the present embodiment, a register pair
Can be stored with the corresponding module brightness of a GTG in Ying Yuyi GTG, each register.
Step 202, the first corresponding relation of setting, first corresponding relation include environmental light brightness and maximum module brightness
Corresponding relation.
, it is necessary to pre-set the first corresponding relation in the present embodiment.Preferably, first corresponding relation can be looked into for first
Table, i.e. the first corresponding relation is looked for be 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, maximum module brightness is the corresponding brightness of 255 GTGs of display module.First
Look-up table can be found in shown in table 1 below.
Table 1
| Environmental light brightness | Maximum module brightness |
| A11-A19 | Y1 |
| …… | …… |
| A101-A109 | Y10 |
As can be seen from Table 1, environmental light brightness is divided into multiple intervals, each interval all environmental light brightness are equal
Corresponding to a maximum module brightness.
Preferably, the environmental light brightness in the first look-up table and maximum module brightness can be numerical data, for example, two enter
Data processed, numerical data can be stored as 10bit data or the data more than 10bit according to the size of memory capacity.First searches
Table carries out storage using numerical data can save storage resource.
Step 203, detect current environmental light brightness.
In the present embodiment, this step can be performed 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, now needs detection
Module is converted to the current environmental light brightness of the analogue data form current environmental light brightness of digital data format, now when
Preceding environmental light brightness is numerical data, subsequently can perform subsequent step using the current environmental light brightness of digital data format.This
In embodiment, detection module may include analog-digital converter (Analog-to-Digital Converter, abbreviation ADC), by modulus
Converter performs the current environment light that the above-mentioned current environmental light brightness by the analogue data form is converted to digital data format
The step of brightness.
Step 204, current maximum module brightness corresponding with current environmental light brightness is inquired from the first corresponding relation.
, can be by being inquired from the first look-up table shown in above-mentioned table 1 with working as when detecting current environmental light brightness
The corresponding current maximum module brightness of preceding environmental light brightness.
The corresponding current module brightness of the different current grays of the current maximum module brightness generation of step 205, basis.
Specifically, formula can be passed throughDifferent GTGs are generated according to current maximum module brightness corresponding
Current module brightness, wherein, Y is current maximum module brightness, and G is current gray, YGFor the corresponding current module of different GTGs
Brightness, A is the maximum gray value of display device.For example, when display device is shown using 256 GTGs, then display device
Maximum gray value be that 255, i.e. A are 255.Now formula can beIn formula G span be 0 to
When 255, the current maximum module brightness inquired in step 204 is substituted into above-mentioned formula, above-mentioned G span is calculated
In each corresponding current module brightness of current gray, wherein the Y calculated when G is 255GEqual to Y.In actual applications,
When display device is shown using other GTGs, A can also be other values, will not enumerate herein.
Step 206, by standard gamma curve, generated according to the corresponding current module brightness of different current grays different
The GTG of the corresponding standard gamma curve of current module brightness.
Specifically, the corresponding formula of standard gamma curve can be passed throughAccording to different current grays correspondence
Current module luminance meter calculate the GTG of the corresponding standard gamma curve of different current module brightness, wherein, GBFor standard
The GTG of gamma curve, YGFor the corresponding current module brightness of different current grays, YBIt is corresponding most for standard environment brightness
Big module brightness, A is the maximum gray value of display device.In the present embodiment, display device is shown using 256 GTGs
When, then the maximum gray value of display device is that 255, i.e. A are 255.Now formula can be
Step 207, according to the corresponding current gray of different current module brightness and the Bu Tong current corresponding mark of module brightness
The GTG of quasi- gamma curve sets up corresponding second corresponding relation of current maximum module brightness, and second corresponding relation includes working as
Correspondence pass between the GTG of the preceding corresponding current gray of module brightness and the corresponding standard gamma curve of current module brightness
System.
In the present embodiment, it is preferable that the second corresponding relation can be second look-up table, i.e., the second corresponding relation 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 relation
The specified GTG of quasi- gamma curve.
Wherein, specified current gray can need any current gray shown for display device.
Step 209, the specified GTG of standard gamma curve sent to drive circuit, so that drive circuit is according to standard
The specified GTG driving display module of gamma curve is shown.
In the present embodiment, drive circuit can be drive integrated circult (Driver IC).
In the present embodiment, alternatively, subsequently when environmental light brightness changes, repeat and perform step 203 to step
209。
In the present embodiment, alternatively, because each interval all environmental light brightness are corresponded in the first mapping table
In a maximum module brightness, therefore the environmental light brightness pair after changing can be drawn when execution of step 203 and step 204 after
The maximum module brightness answered, if the corresponding current maximum module brightness of environmental light brightness after change and the environment bright before change
Spend corresponding current maximum module brightness identical, then corresponding second corresponding relation of the current maximum norm group brightness is constant, this
Shi Wuxu performs step 205 to step 207 again, and directly performs step 208.Also include depositing in such a situation, after step 207
Corresponding second corresponding relation of the current maximum module brightness of storage.Then, environment after environmental light brightness changes and changes
When the corresponding current maximum module brightness of brightness current maximum module brightness corresponding from the environmental light brightness before change is different,
The second corresponding relation corresponding with the environmental light brightness after the change is drawn, the current maximum module stored before now deleting is bright
Spend corresponding second corresponding relation.
Further, it can also include after step 206：Judge the different currently corresponding standards of module brightness of generation
The absolute value of the difference of the GTG of gamma curve and the theoretical value pre-set is no to be less than or equal to given threshold；If judging
Difference is less than or equal to given threshold, then continues executing with step 207；When judging that difference is more than given threshold, then continue executing with
Step 203.
Wherein, if judge difference be less than or equal to given threshold, show that theoretical value and calculated value difference are smaller, now without
The process for the GTG for calculating the corresponding standard gamma curve of different currently module brightness need to be re-executed；If judging, difference is big
In given threshold, show that theoretical value and calculated value difference are larger, now need to re-execute the different current module brightness correspondences of calculating
Standard gamma curve GTG process.
In the technical scheme for the brightness adjusting method that the present embodiment is provided, according to current maximum module brightness and pre-set
Standard gamma curve set up corresponding second corresponding relation of current maximum module brightness, according to specified current gray from second
The specified GTG of standard gamma curve corresponding with specified current gray is inquired in corresponding relation, for drive circuit according to
The specified GTG driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The regulation to display module brightness is realized, without storing a plurality of gamma curve, so as to save register resources.Using this reality
The scheme of example is applied so that brightness regulation process convenience and high-efficiency and can easily be accommodated.
Fig. 4 is a kind of structural representation for brightness regulating apparatus that the embodiment of the present invention three is provided, as shown in figure 4, the dress
Put including：Detection module 11, the first enquiry module 12, set up module 13, the second enquiry module 14 and sending module 15.
Detection module 11 is used to detect current environmental light brightness.First enquiry module 12 is used for from the first corresponding relation
Inquire current maximum module brightness corresponding with current environmental light brightness, first corresponding relation include environmental light brightness and
The corresponding relation of maximum module brightness.Setting up module 13 is used for according to current maximum module brightness and the standard that pre-sets
Gamma curve, sets up corresponding second corresponding relation of current maximum module brightness, and second corresponding relation includes current module
Corresponding relation between the GTG of the corresponding current gray of brightness and the corresponding standard gamma curve of current module brightness.Second
Enquiry module 14 is used to, according to current gray is specified, standard corresponding with specified current gray is inquired from the second corresponding relation
The specified GTG of gamma curve.Sending module 15 is used to send the specified GTG of standard gamma curve to drive circuit, with
Display module is driven to be shown according to the specified GTG of standard gamma curve for drive circuit.
The brightness regulating apparatus that the present embodiment is provided can be used for the brightness adjusting method for realizing that above-described embodiment one is provided.
In the technical scheme for the brightness regulating apparatus that the present embodiment is provided, according to current maximum module brightness and pre-set
Standard gamma curve set up corresponding second corresponding relation of current maximum module brightness, according to specified current gray from second
The specified GTG of standard gamma curve corresponding with specified current gray is inquired in corresponding relation, for drive circuit according to
The specified GTG driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The regulation to display module brightness is realized, without storing a plurality of gamma curve, so as to save register resources.Using this reality
The scheme of example is applied so that brightness regulation process convenience and high-efficiency and can easily be accommodated.
Fig. 5 is a kind of structural representation for brightness regulating apparatus that the embodiment of the present invention four is provided, as shown in figure 5, this reality
Example is applied on the basis of above-described embodiment three, setting up module 13 includes the first generation generation submodule 132 of submodule 131, second
With setting up submodule 133.First generation submodule 131 is used to generate different current gray correspondences according to current maximum module brightness
Current module brightness.Second generation submodule 132 is used for by standard gamma curve, corresponding according to different current grays
The GTG of the corresponding standard gamma curve of the current different currently module brightness of module brightness generation.Setting up submodule 133 is used for root
Built according to the GTG of the corresponding current gray of different currently module brightness and the Bu Tong corresponding standard gamma curve of current module brightness
Found corresponding second corresponding relation of current maximum module brightness.
Further, the first generation submodule 131 is used to pass through formulaIt is bright according to current maximum module
The corresponding current module brightness of the different GTGs of degree generation, wherein, Y is current maximum module brightness, and G is current gray, YGFor not
The corresponding current module brightness with GTG, A is the maximum gray value of display device.
Further, the second generation submodule 132 is used to pass through the corresponding formula of standard gamma curve
The corresponding standard gamma curve of different currently module brightness is calculated according to the corresponding current module luminance meter of different current grays
GTG, wherein, GBFor the GTG of standard gamma curve, YGFor the corresponding current module brightness of different current grays, YBFor standard
The corresponding maximum module brightness of environmental light brightness, A is the maximum gray value of display device.
Further, the device also includes：Judge module 16.Judge module 16 is used to judge different current module brightness pair
The absolute value of the difference of the GTG for the standard gamma curve answered and the theoretical value pre-set 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 performs described bright according to different current modules
Spend corresponding current gray and Bu Tong currently the current maximum module of the GTG foundation of the corresponding standard gamma curve of module brightness is bright
The step of spending corresponding second corresponding relation；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 being detected described in row.
In the technical scheme for the brightness regulating apparatus that the present embodiment is provided, according to current maximum module brightness and pre-set
Standard gamma curve set up corresponding second corresponding relation of current maximum module brightness, according to specified current gray from second
The specified GTG of standard gamma curve corresponding with specified current gray is inquired in corresponding relation, for drive circuit according to
The specified GTG driving display module of standard gamma curve is shown that the present embodiment only needs a standard gamma curve
The regulation to display module brightness is realized, without storing a plurality of gamma curve, so as to save register resources.Using this reality
The scheme of example is applied so that 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, and the display module includes brightness regulating apparatus, and the brightness is adjusted
Regulating device uses the brightness regulating apparatus that above-described embodiment four is provided.
The embodiment of the present invention six provides a kind of display device, and the display device includes drive circuit and display module, should
Display module uses the display module that above-described embodiment five is provided.
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, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (12)
1. a kind of brightness adjusting method, it is characterised in that including：
Detect current environmental light brightness；
Current maximum module brightness corresponding with current environmental light brightness, first correspondence are inquired from the first corresponding relation
Relation includes the corresponding relation of environmental light brightness and maximum module brightness；
According to current maximum module brightness and the standard gamma curve pre-set, current maximum module brightness is set up corresponding
Second corresponding relation, it is corresponding with current module brightness that second corresponding relation includes the corresponding current gray of current module brightness
Standard gamma curve GTG between corresponding relation；
According to specified current gray, standard gamma curve corresponding with specified current gray is inquired from the second corresponding relation
Specified GTG；
The specified GTG of standard gamma curve is sent to drive circuit, for finger of the drive circuit according to standard gamma curve
Determine GTG driving display module to be shown.
2. brightness adjusting method according to claim 1, it is characterised in that the current maximum module brightness of the basis and pre-
The standard gamma curve first set, setting up corresponding second corresponding relation of current maximum module brightness includes：
The corresponding current module brightness of different current grays is generated according to current maximum module brightness；
By standard gamma curve, different current module brightness are generated according to the corresponding current module brightness of different current grays
The GTG of corresponding standard gamma curve；
According to the corresponding current gray of different currently module brightness and the Bu Tong corresponding standard gamma curve of current module brightness
GTG sets up corresponding second corresponding relation of current maximum module brightness.
3. brightness adjusting method according to claim 2, it is characterised in that the current maximum module brightness generation of the basis
The corresponding current module brightness of different current grays includes：
Pass through formulaThe corresponding current module brightness of different GTGs is generated according to current maximum module brightness, its
In, Y is current maximum module brightness, and G is current gray, YGFor the corresponding current module brightness of different GTGs, A is display device
Maximum gray value.
4. brightness adjusting method according to claim 2, it is characterised in that described by standard gamma curve, according to not
The GTG bag of the corresponding standard gamma curve of the corresponding current different currently module brightness of module brightness generation with current gray
Include：
Pass through the corresponding formula of standard gamma curveAccording to the corresponding current module brightness of different current grays
The GTG of the corresponding standard gamma curve of different currently module brightness is calculated, wherein, GBFor the GTG of standard gamma curve,
YGFor the corresponding current module brightness of different current grays, YBFor the corresponding maximum module brightness of standard environment brightness, A is aobvious
The maximum gray value of showing device.
5. brightness adjusting method according to claim 2, it is characterised in that described by standard gamma curve, according to not
With current gray after the GTG of the corresponding standard gamma curve of the corresponding current different currently module brightness of module brightness generation
Also include：
Judge the GTG of the corresponding standard gamma curve of the different currently module brightness of generation and the difference of the theoretical value pre-set
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, perform described according to the different currently corresponding current ashes of module brightness
It is corresponding second pair that the GTG of rank and the Bu Tong corresponding standard gamma curve of current module brightness sets up current maximum module brightness
The step of should being related to；
If judge that difference is less than or equal to given threshold, the step of detecting current environmental light brightness described in execution.
6. a kind of brightness regulating apparatus, it is characterised in that including：
Detection module, for detecting current environmental light brightness；
First enquiry module, for inquiring current maximum module corresponding with current environmental light brightness from the first corresponding relation
Brightness, first corresponding relation includes the corresponding relation of environmental light brightness and maximum module brightness；
Module is set up, for according to current maximum module brightness and the standard gamma curve pre-set, setting up current maximum norm
Corresponding second corresponding relation of group brightness, second corresponding relation includes the corresponding current gray of current module brightness and current
Corresponding relation between the GTG of the corresponding standard gamma curve of module brightness；
Second enquiry module, for according to current gray is specified, being inquired from the second corresponding relation and specified current gray pair
The specified GTG for the standard gamma curve answered；
Sending module, for the specified GTG of standard gamma curve to be sent to drive circuit, so that drive circuit is according to standard
The specified GTG driving display module of gamma curve is shown.
7. brightness regulating apparatus according to claim 6, it is characterised in that the module of setting up includes：
First generation submodule, for bright according to the corresponding current module of the different current grays of current maximum module brightness generation
Degree；
Second generation submodule, for by standard gamma curve, being given birth to according to the corresponding current module brightness of different current grays
Into the GTG of the corresponding standard gamma curve of different currently module brightness；
Setting up submodule, for corresponding with Bu Tong current module brightness according to the corresponding current gray of different currently module brightness
The GTG of standard gamma curve sets up corresponding second corresponding relation of current maximum module brightness.
8. brightness regulating apparatus according to claim 7, it is characterised in that the first generation submodule is used for by public affairs
FormulaThe corresponding current module brightness of different GTGs is generated according to current maximum module brightness, wherein, Y is works as
Preceding maximum module brightness, G is current gray, YGFor the corresponding current module brightness of different GTGs, A is the maximum grey of display device
Rank is worth.
9. brightness regulating apparatus according to claim 7, it is characterised in that the second generation submodule is used for by mark
The corresponding formula of quasi- gamma curveDifference is calculated according to the corresponding current module luminance meter of different current grays
The GTG of the corresponding standard gamma curve of current module brightness, wherein, GBFor the GTG of standard gamma curve, YGWork as difference
The corresponding current module brightness of preceding GTG, YBFor the corresponding maximum module brightness of standard environment brightness, A be display device most
Big grey decision-making.
10. brightness regulating apparatus according to claim 7, it is characterised in that also include：
Judge module, for the reason for judging the GTG of the corresponding standard gamma curve of different currently module brightness and pre-setting
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 performs described according to the corresponding current gray of different currently module brightness and Bu Tong current module brightness pair
The step of GTG of the standard gamma curve answered sets up current maximum module brightness corresponding second corresponding relation；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.
11. a kind of display module, it is characterised in that including：Any described brightness regulating apparatus of claim 6 to 10.
12. a kind of display device, it is characterised in that including the display module described in drive circuit and claim 11.
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