CN108492772B - A kind of Gamma adjusting method and Gamma regulating system - Google Patents

A kind of Gamma adjusting method and Gamma regulating system Download PDF

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CN108492772B
CN108492772B CN201810294552.6A CN201810294552A CN108492772B CN 108492772 B CN108492772 B CN 108492772B CN 201810294552 A CN201810294552 A CN 201810294552A CN 108492772 B CN108492772 B CN 108492772B
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sub
pixel
brightness
grayscale
target
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CN108492772A (en
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李永谦
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BOE Technology Group Co Ltd
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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]
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

This application discloses a kind of Gamma adjusting method and Gamma regulating systems, are related to field of display technology, solve the problems, such as that existing oled panel power consumption under HDR state is big.The Gamma adjusting method is the following steps are included: obtain actual displayed brightness of each sub-pixel of OLED display panel in the case where actually entering grayscale, and calculate the corresponding relationship for actually entering grayscale Yu actual displayed brightness of each sub-pixel；Target display brightness of each sub-pixel under default input grayscale is determined according to the target gamma value of the object brightness of each the 1024th grayscale of sub-pixel and OLED display panel；Actual displayed brightness of each sub-pixel under the default input grayscale of input is determined according to the corresponding relationship for actually entering grayscale and actual displayed brightness of each sub-pixel；According to each sub-pixel in the default actual displayed brightness inputted under grayscale of input and target display brightness, brightness regulation is carried out to each sub-pixel of OLED display panel.The Gamma adjusting method reduces full frame dynamic power consumption while improving HDR contrast.

Description

A kind of Gamma adjusting method and Gamma regulating system
Technical field
This application involves field of display technology, and in particular to a kind of Gamma adjusting method and Gamma regulating system.
Background technique
With greatly developing for display panel, OLED becomes the following panel industry with its high contrast and low power consumption Where trend.Reach according to HDR (High-Dynamic Range, the high dynamic range images) needs of future market standard OLED 600nit, and currently used is mode that Gamma as shown in Figure 1 is adjusted.Due to IC (integrated circuit, Integrated circuit) generally designed using one gamma, the component of RGB must reach corresponding point of 600nit at HDR 600nit Amount, and OLED TV is to reduce power consumption to use COA (Color Filter On Array, color filter sheet integrated in array substrate) Technique, pixel are designed as RGBW, since RGB coloured silk film penetrance is lower, the component of RGB are caused to be extremely difficult to point under 600nit Amount, generally near R200nit, G300nit, B100nit.
To solve the above-mentioned problems, currently used is solution as shown in Figure 1, i.e. each son of OLED display panel Pixel carries out gamma adjusting with the object brightness that HDR600nit is the 1024th grayscale, cannot meet the needs in the brightness of RGB In the case where, the precision of RGB high gray is sacrificed when Gamma adjustment, if also after RGB is more than the limit brightness of oneself It cannot meet the needs, then the part gray-scale that high gray will be sacrificed.W pixel is due to no CF (Color Filter, colorized optical filtering Piece), penetrance is generally relatively high, can satisfy brightness demand.Brightness need can substantially be met under HDR state by doing so It asks, but a disadvantage is that the high gray of RGB is lost, another bigger disadvantage is that high gray state is mostly in due to RGB, The dynamic power consumption of panel is influenced very big.
Apply for content
The embodiment of the present application solves the existing face OLED by providing a kind of Gamma adjusting method and Gamma regulating system Plate big problem of power consumption under HDR state reduces full frame dynamic power consumption while improving HDR contrast.
In order to achieve the above objectives, the application mainly provides the following technical solutions:
On the one hand, the embodiment of the present application provides a kind of Gamma adjusting method, comprising the following steps:
(1) actual displayed brightness of each sub-pixel of OLED display panel in the case where actually entering grayscale is obtained, and is calculated each The corresponding relationship for actually entering grayscale Yu actual displayed brightness of sub-pixel；
(2) it is determined according to the target gamma value of the object brightness of each the 1024th grayscale of sub-pixel and OLED display panel each Target display brightness of the sub-pixel under default input grayscale, comprising:
The object brightness and W sub-pixel the 1024th of the 1024th grayscale of R, G and B sub-pixel of OLED display panel are set The object brightness L of grayscaleW1And LW2；
For R, G and B sub-pixel: according to the object brightness and OLED display panel of the 1024th grayscale of R, G and B sub-pixel Target gamma value γ1Target display brightness of R, G and B sub-pixel under default input grayscale is determined respectively；
For W sub-pixel: as greyscale level≤GxWhen, wherein 0 < Gx< 1024, according to the target of the 1024th grayscale of W sub-pixel Brightness LW1And the target gamma value γ of OLED display panel1It is bright to determine that target of the W sub-pixel under default input grayscale is shown Degree；Work as greyscale level > GxWhen, according to the object brightness L of the 1024th grayscale of W sub-pixelW1With W sub-pixel GxThe target of grayscale is aobvious Show brightness, determines the target gamma value γ of OLED display panel2, further according to the object brightness L of the 1024th grayscale of W sub-pixelW2With Target gamma value γ2Determine target display brightness of the W sub-pixel under default input grayscale；
(3) determine each sub-pixel defeated according to the corresponding relationship for actually entering grayscale and actual displayed brightness of each sub-pixel Enter to preset the actual displayed brightness under input grayscale；
(4) the actual displayed brightness according to each sub-pixel under the default input grayscale of input and target display brightness, it is right Each sub-pixel of OLED display panel carries out brightness regulation.
Preferably, the component when object brightness of the 1024th grayscale of R, G and B sub-pixel is HDR400nit.
Preferably, the object brightness L of the 1024th grayscale of W sub-pixelW1For HDR400nit, LW2For HDR600nit.
Preferably, the target gamma value γ of the OLED display panel1It is 2.2.
On the other hand, the embodiment of the present application also provides a kind of Gamma regulating systems, including data processing equipment and OLED Display panel, the data processing equipment include:
Corresponding relationship computing module: for obtaining reality of each sub-pixel of OLED display panel in the case where actually entering grayscale Display brightness, and calculate the corresponding relationship for actually entering grayscale Yu actual displayed brightness of each sub-pixel；
Target display brightness computing module: for being shown according to the object brightness and OLED of each the 1024th grayscale of sub-pixel The target gamma value of panel determines target display brightness of each sub-pixel under default input grayscale, comprising:
The object brightness and W sub-pixel the 1024th of the 1024th grayscale of R, G and B sub-pixel of OLED display panel are set The object brightness L of grayscaleW1And LW2；
For R, G and B sub-pixel: according to the object brightness and OLED display panel of the 1024th grayscale of R, G and B sub-pixel Target gamma value γ1Target display brightness of R, G and B sub-pixel under default input grayscale is determined respectively；For W picture Element: as greyscale level≤GxWhen, wherein 0 < Gx< 1024, according to the object brightness L of the 1024th grayscale of W sub-pixelW1And OLED is aobvious Show the target gamma value γ of panel1Determine target display brightness of the W sub-pixel under default input grayscale；Work as greyscale level > Gx When, according to the object brightness L of the 1024th grayscale of W sub-pixelW1With W sub-pixel GxThe target display brightness of grayscale, determines OLED The target gamma value γ of display panel2, further according to the object brightness L of the 1024th grayscale of W sub-pixelW2With target gamma value γ2Really Determine target display brightness of the W sub-pixel under default input grayscale；
Actual displayed brightness calculation module: for pair for actually entering grayscale Yu actual displayed brightness according to each sub-pixel It should be related to the actual displayed brightness for determining each sub-pixel under the default input grayscale of input；
Brightness regulation computing module: for according to actual displayed brightness of each sub-pixel under the default input grayscale of input with Target display brightness determines brightness regulation value；
OLED display panel is used to obtain and store brightness regulation value, and bright to the progress of each sub-pixel according to brightness regulation value Degree is adjusted.
Preferably, the component when object brightness of the 1024th grayscale of R, G and B sub-pixel is HDR400nit.
Preferably, the object brightness L of the 1024th grayscale of W sub-pixelW1For HDR400nit, LW2For HDR600nit.
Preferably, the target gamma value γ of the OLED display panel1It is 2.2.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The embodiment of the present application uses different gamma regulative modes to RGB sub-pixel and W sub-pixel, to RGB sub-pixel, 2.2 curve of Gamma using HDR400nit as object brightness is all used within 1024 grayscale, and W sub-pixel is using segmentation It adjusts, GxWithin grayscale, according to using HDR400nit as 2.2 curve of Gamma of object brightness, it is greater than GxWhen grayscale, then using compared with Big gamma makes object brightness reach HDR600nit, adjusting by this method, can it is lower in whole-screen brightness, HDR guarantees display image integral color not colour cast in the case where not working, and after HDR works, equivalent wicket when It waits, can achieve the effect of HDR600nit, reduction dynamic power consumption that not only can be very big, but also can guarantee the effect of HDR high contrast Fruit.
Detailed description of the invention
Fig. 1 is the gamma figure of gamma adjusting method in the prior art；
Fig. 2 is the gamma figure for the gamma adjusting method that one embodiment of the application provides；
Fig. 3 is the structural schematic diagram for the gamma regulating system that another embodiment of the application provides.
Specific embodiment
Further to illustrate that the application is the technical means and efficacy reaching predetermined goal of the invention and being taken, below in conjunction with Preferred embodiment, specific embodiment, structure, feature and its effect to the technical solution proposed according to the application, specifically It is bright as after.In the following description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, one Or the special characteristic, structure or feature in multiple embodiments can be combined by any suitable form.
The embodiment of the present application provides a kind of Gamma adjusting method, and the Gamma for OLED display panel is adjusted, specifically The following steps are included:
(1) actual displayed brightness of each sub-pixel of OLED display panel in the case where actually entering grayscale is obtained, and is calculated each The corresponding relationship for actually entering grayscale Yu actual displayed brightness of sub-pixel；
Specifically, above-mentioned OLED display panel includes tetra- sub-pixels of R, G, B and W, each sub-pixel can be obtained Multiple actual displayed brightness actually entered under grayscale are taken, each sub-pixel reality is calculated by interpolation or fitting scheduling algorithm The corresponding relationship of border input grayscale and actual displayed brightness.It is bright with actual displayed that grayscale is actually entered by each sub-pixel of calculating The corresponding relationship of degree can accurately determine the characteristics of luminescence of each sub-pixel, brightness that can accurately to each sub-pixel It is adjusted.
Specifically, can be according to the OLED display panel that optical pickup acquires in each one actually entered under grayscale Width or several display images, each sub-pixel for obtaining OLED display panel further according to these display images are actually entering grayscale Under actual displayed brightness.The optical pickup can be charge-coupled device camera.It is acquired using charge-coupled device camera The display image of OLED display panel, the available display brightness to each sub-pixel, improves brightness regulation precision.
(2) it is determined according to the target gamma value of the object brightness of each the 1024th grayscale of sub-pixel and OLED display panel each Target display brightness of the sub-pixel under default input grayscale, comprising:
The object brightness and W sub-pixel the 1024th of the 1024th grayscale of R, G and B sub-pixel of OLED display panel are set The object brightness L of grayscaleW1And LW2；
For R, G and B sub-pixel: according to the object brightness and OLED display panel of the 1024th grayscale of R, G and B sub-pixel Target gamma value γ1Target display brightness of R, G and B sub-pixel under default input grayscale is determined respectively；
For W sub-pixel: as greyscale level≤GxWhen, wherein 0 < Gx< 1024, according to the target of the 1024th grayscale of W sub-pixel Brightness LW1And the target gamma value γ of OLED display panel1It is bright to determine that target of the W sub-pixel under default input grayscale is shown Degree；Work as greyscale level > GxWhen, according to the object brightness L of the 1024th grayscale of W sub-pixelW1With W sub-pixel GxThe target of grayscale is aobvious Show brightness, determines the target gamma value γ of OLED display panel2, further according to the object brightness L of the 1024th grayscale of W sub-pixelW2With Target gamma value γ2Determine target display brightness of the W sub-pixel under default input grayscale.
Specifically, target display brightness and target gamma value can be calculated according to following formula (1):
Wherein, x is the gray number of default input grayscale, LxFor the target display brightness of xth grayscale, L1024For the 1024th ash The object brightness of rank, γ are the target gamma value of OLED display panel.
Specifically, the target of the 1024th grayscale of R, G and B sub-pixel of OLED display panel can be calculated according to following steps Brightness:
Obtain actual displayed coloration and actual displayed brightness of the OLED display panel under the 1024th grayscale；
The white object coloration and white object brightness of the 1024th grayscale of OLED display panel are set；
The object brightness of the 1024th grayscale of R, G and B sub-pixel of OLED display panel is calculated according to colorimetry formula.
Preferably, the object brightness L of the embodiment of the present application setting the 1024th grayscale of R, G and B sub-pixelR、LGAnd LBFor Component when HDR400nit, i.e. the white object coloration of the 1024th grayscale of OLED display panel and white object brightness are Target colorimetric and object brightness under HDR400nit obtain the 1024th ash of R, G and B sub-pixel after calculating according to colorimetry formula The object brightness L of rankR、LGAnd LBRespectively R135nit, G200nit and L65nit.
Preferably, the object brightness L of the embodiment of the present application setting the 1024th grayscale of W sub-pixelW1For HDR400nit, LW2 For HDR600nit.
Specifically, GxThe size of grayscale can be determined according to actual effect, and be not specifically limited.The embodiment of the present application setting The target gamma value γ of OLED display panel1It is 2.2, can also needs to be configured according to user.
(3) determine each sub-pixel defeated according to the corresponding relationship for actually entering grayscale and actual displayed brightness of each sub-pixel Enter to preset the actual displayed brightness under input grayscale.
The embodiment of the present application is determined according to the corresponding relationship for actually entering grayscale and actual displayed brightness of each sub-pixel Actual displayed brightness of each sub-pixel under the default input grayscale of input, brightness regulation precision with higher can be eliminated Non-uniform light between each sub-pixel of OLED display panel improves image displaying quality.
(4) the actual displayed brightness according to each sub-pixel under the default input grayscale of input and target display brightness, it is right Each sub-pixel of OLED display panel carries out brightness regulation.
Specifically, when the actual displayed brightness under the default input grayscale of input of R, G, B and W sub-pixel and target show it is bright When the difference of degree is greater than preset threshold, brightness regulation is carried out to R, G, B and W sub-pixel, so that R, G, B and W sub-pixel are inputting Actual displayed brightness under default input grayscale is identical as target display brightness, or the reality under the default input grayscale of input is aobvious Show that the difference of brightness and target display brightness is less than preset threshold.Preset threshold in the embodiment of the present application can be according to practical feelings Condition is set, and is not specifically limited.
For example, G is arranged in the embodiment of the present applicationXIt is 800；
To R, G and B sub-pixel, OLED display panel for the object brightness of the 1024th grayscale and is arranged with HDR400nit Target gamma value γ1It is 2.2, the object brightness L of the 1024th grayscale of R, G and B sub-pixel is calculated according to colorimetry formulaR、LG And LBRespectively R135nit, G200nit and L65nit；R, G and B sub-pixel 0- are calculated separately further according to above-mentioned formula (1) The target display brightness of 1024 ranks obtains the gamma of R, G and B sub-pixel as shown in Figure 2；
For W sub-pixel, by the object brightness L of the 1024th grayscaleW1And LW2It is set to 400nit, 600nit, works as grayscale When grade≤800, according to the object brightness 400nit and target gamma value 2.2 of the 1024th grayscale, respectively using above-mentioned formula (1) The target display brightness of W sub-pixel 0-800 rank is calculated, wherein the target display brightness of the 800th rank of W sub-pixel is 232.4nit；When greyscale level > 800, according to the object brightness 400nit and W sub-pixel the 800th of the 1024th grayscale of W sub-pixel The target display brightness 232.4nit of grayscale, the target gamma value γ of OLED display panel is calculated using above-mentioned formula (1)2 It is 3.84, further according to the object brightness 600nit and target gamma value 3.84 of the 1024th grayscale of W sub-pixel, using above-mentioned formula (1) it calculates separately to obtain W sub-pixel in the target display brightness of 800-1024 rank, obtains W sub-pixel as shown in Figure 2 Gamma；
Determine each sub-pixel in 0- according to the corresponding relationship for actually entering grayscale and actual displayed brightness of each sub-pixel After the actual displayed brightness of 1024 ranks, show with target further according to each sub-pixel in the actual displayed brightness of 0-1024 rank bright Degree carries out brightness regulation to each sub-pixel of OLED display panel, keeps actual displayed of each sub-pixel under 0-1024 rank bright Degree is identical as target display brightness, or the difference of actual displayed brightness and target display brightness under 0-1024 rank is less than in advance If threshold values.
The embodiment of the present application uses different gamma regulative modes to RGB sub-pixel and W sub-pixel, to RGB sub-pixel Within 1024 grayscale, 2.2 curve of Gamma using HDR400nit as object brightness is all used, and W sub-pixel is using segmentation It adjusts, GxWithin grayscale, according to using HDR400nit as 2.2 curve of Gamma of object brightness, it is greater than GxWhen grayscale, then using compared with Big gamma makes object brightness reach HDR600nit, adjusting by this method, can it is lower in whole-screen brightness, HDR guarantees display image integral color not colour cast in the case where not working, and after HDR works, equivalent wicket when It waits, can achieve the effect of HDR600nit, reduction dynamic power consumption that not only can be very big, but also can guarantee the effect of HDR high contrast Fruit.
The pixel of WOLED is designed as tetra- sub-pixels of W, R, G and B, and white adds complementary color to realize mainly by W pixel, in HDR shape W sub-pixel needs to reach 600nit under state, and the corresponding component of RGB does not need to reach the component under 600nit.Due to RGB picture Element does not need complementary color, and when individually lighting to RGB, the embodiment of the present application is bright as target using the component under high gray when highest 400nit Degree carries out Gamma adjusting, and the problem of being watered down at this time there is no color, and shown picture beautiful in colour is The brightness for meeting 2.2 curve of Gamma under 400nit can achieve the effect for saving power consumption；Since W sub-pixel needs complementary color aobvious To show, the embodiment of the present application individually establishes gamma curve and complementary color lookup table under highest standard 600nit to W sub-pixel, And the brightness of 400nit or more is completed using complementary color, at HDR, when W sub-pixel is individually illuminated near 600nit, Highest component of the brightness ratio RGB of the RG or GB complementary color of W at 400nit is much lower, therefore there is no the colors under high brightness Problem.
As shown in figure 3, the embodiment of the present application also provides a kind of Gamma regulating system, including 31 He of data processing equipment OLED display panel 32, wherein data processing equipment includes corresponding relationship computing module 311, target display brightness computing module 312, actual displayed brightness calculation module 313 and brightness regulation computing module 314；
Corresponding relationship computing module 311 is used to obtain each sub-pixel 321 of OLED display panel in the case where actually entering grayscale Actual displayed brightness, and calculate the corresponding relationship for actually entering grayscale Yu actual displayed brightness of each sub-pixel；
Target display brightness computing module 312 is used for aobvious according to the object brightness and OLED of each the 1024th grayscale of sub-pixel Show that the target gamma value of panel determines target display brightness of each sub-pixel under default input grayscale；Wherein according to each sub-pixel The object brightness of 1024th grayscale and the target gamma value of OLED display panel determine each sub-pixel under default input grayscale Target display brightness include:
The object brightness and W sub-pixel the 1024th of the 1024th grayscale of R, G and B sub-pixel of OLED display panel are set The object brightness L of grayscaleW1And LW2；
For R, G and B sub-pixel: according to the object brightness and OLED display panel of the 1024th grayscale of R, G and B sub-pixel Target gamma value γ1Target display brightness of R, G and B sub-pixel under default input grayscale is determined respectively；
For W sub-pixel: as greyscale level≤GxWhen, wherein 0 < Gx< 1024, according to the target of the 1024th grayscale of W sub-pixel Brightness LW1And the target gamma value γ of OLED display panel1It is bright to determine that target of the W sub-pixel under default input grayscale is shown Degree；Work as greyscale level > GxWhen, according to the object brightness L of the 1024th grayscale of W sub-pixelW1With W sub-pixel GxThe target of grayscale is aobvious Show brightness, determines the target gamma value γ of OLED display panel2, further according to the object brightness L of the 1024th grayscale of W sub-pixelW2With Target gamma value γ2Determine target display brightness of the W sub-pixel under default input grayscale；
Actual displayed brightness calculation module 313 is used to actually enter grayscale and actual displayed brightness according to each sub-pixel Corresponding relationship determines actual displayed brightness of each sub-pixel under the default input grayscale of input；
Brightness regulation computing module 314 is used for the actual displayed brightness according to each sub-pixel under the default input grayscale of input With target display brightness, brightness regulation value is determined；
OLED display panel 32 carries out each sub-pixel for obtaining and storing brightness regulation value, and according to brightness regulation value Brightness regulation.
Gamma regulating system provided by the embodiments of the present application, with above-mentioned gamma adjusting method provided by the embodiments of the present application Belong to same inventive concept, specific corresponding technical effect, the not technical detail of detailed description in the present embodiment, reference can be made on State gamma adjusting method provided by the embodiments of the present application.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, reference can be made to the related descriptions of other embodiments.
It is understood that the correlated characteristic in above-mentioned apparatus can be referred to mutually.In addition, in above-described embodiment " the One ", " second " etc. is and not represent the superiority and inferiority of each embodiment for distinguishing each embodiment.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention Example can be practiced without these specific details.In some instances, well known structure and skill is not been shown in detail Art, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects, Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes In example, figure or descriptions thereof.However, the device of the disclosure should not be construed to reflect an intention that i.e. required guarantor Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore, Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself All as a separate embodiment of the present invention.
It will be understood to those skilled in the art that can adaptively be changed to the component in the device in embodiment Become and they are arranged in one or more devices unlike this embodiment.Can the component combination in embodiment at One component, and furthermore they can be divided into multiple subassemblies.In addition at least some of such feature is mutually to arrange It, can be using any combination to disclosed in this specification (including adjoint claim, abstract and attached drawing) all except reprimand All components of feature and so disclosed any device are combined.Unless expressly stated otherwise, this specification (including companion With the claims, abstract and drawings) disclosed in each feature can be by providing identical, equivalent, or similar purpose alternative features To replace.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed Meaning one of can in any combination mode come using.Various component embodiments of the invention can be implemented in hardware, or It is implemented in a combination thereof.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims, Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not Component or component listed in the claims.Word "a" or "an" before component or component does not exclude the presence of multiple Such component or component.The present invention can be realized by means of including the device of several different components.It is several listing In the claim of component, several in these components, which can be through the same component item, to be embodied.Word first, Second and the use of third etc. do not indicate any sequence.These words can be construed to title.
Finally, it is stated that above embodiments are only to illustrate the technical solution of the application rather than limit, although referring to compared with The application is described in detail in good embodiment, those skilled in the art should understand that, it can be to the skill of the application Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical scheme, should all be covered at this In the scope of the claims of application.

Claims (8)

1. a kind of Gamma adjusting method, which comprises the following steps:
(1) actual displayed brightness of each sub-pixel of OLED display panel in the case where actually entering grayscale is obtained, and calculates each sub- picture The corresponding relationship for actually entering grayscale Yu actual displayed brightness of element；
(2) each sub- picture is determined according to the target gamma value of the object brightness of each the 1024th grayscale of sub-pixel and OLED display panel Target display brightness of the element under default input grayscale, comprising:
The 1024th grayscale of object brightness and W sub-pixel of the 1024th grayscale of R, G and B sub-pixel of OLED display panel is set Object brightness LW1And LW2；
For R, G and B sub-pixel: according to the mesh of the object brightness of the 1024th grayscale of R, G and B sub-pixel and OLED display panel Mark gamma value γ1Target display brightness of R, G and B sub-pixel under default input grayscale is determined respectively；
For W sub-pixel: as greyscale level≤GxWhen, wherein 0 < Gx< 1024, according to the object brightness of the 1024th grayscale of W sub-pixel LW1And the target gamma value γ of OLED display panel1Determine target display brightness of the W sub-pixel under default input grayscale；When Greyscale level > GxWhen, according to the object brightness L of the 1024th grayscale of W sub-pixelW1With W sub-pixel GxThe target of grayscale shows bright Degree, determines the target gamma value γ of OLED display panel2, further according to the object brightness L of the 1024th grayscale of W sub-pixelW2And target Gamma value γ2Determine target display brightness of the W sub-pixel under default input grayscale；
Wherein, the step of calculating target display brightness and target gamma value are as follows:
Wherein, x is the gray number of default input grayscale, LxFor the target display brightness of xth grayscale, L1024For the 1024th grayscale Object brightness, γ are the target gamma value of OLED display panel；
(3) determine that each sub-pixel is pre- in input according to the corresponding relationship for actually entering grayscale and actual displayed brightness of each sub-pixel If inputting the actual displayed brightness under grayscale；
(4) the actual displayed brightness according to each sub-pixel under the default input grayscale of input and target display brightness, it is aobvious to OLED Show that each sub-pixel of panel carries out brightness regulation.
2. Gamma adjusting method according to claim 1, which is characterized in that the 1024th grayscale of R, G and B sub-pixel Object brightness be HDR400nit when component.
3. Gamma adjusting method according to claim 1, which is characterized in that the target of the 1024th grayscale of W sub-pixel Brightness LW1For HDR400nit, LW2For HDR600nit.
4. Gamma adjusting method according to claim 1, which is characterized in that the target gamma of the OLED display panel Value γ1It is 2.2.
5. a kind of Gamma regulating system, including data processing equipment and OLED display panel, which is characterized in that at the data Managing device includes:
Corresponding relationship computing module: for obtaining actual displayed of each sub-pixel of OLED display panel in the case where actually entering grayscale Brightness, and calculate the corresponding relationship for actually entering grayscale Yu actual displayed brightness of each sub-pixel；
Target display brightness computing module: for the object brightness and OLED display panel according to each the 1024th grayscale of sub-pixel Target gamma value determine target display brightness of each sub-pixel under default input grayscale, comprising:
The 1024th grayscale of object brightness and W sub-pixel of the 1024th grayscale of R, G and B sub-pixel of OLED display panel is set Object brightness LW1And LW2；
For R, G and B sub-pixel: according to the mesh of the object brightness of the 1024th grayscale of R, G and B sub-pixel and OLED display panel Mark gamma value γ1Target display brightness of R, G and B sub-pixel under default input grayscale is determined respectively；
For W sub-pixel: as greyscale level≤GxWhen, wherein 0 < Gx< 1024, according to the object brightness of the 1024th grayscale of W sub-pixel LW1And the target gamma value γ of OLED display panel1Determine target display brightness of the W sub-pixel under default input grayscale；When Greyscale level > GxWhen, according to the object brightness L of the 1024th grayscale of W sub-pixelW1With W sub-pixel GxThe target of grayscale shows bright Degree, determines the target gamma value γ of OLED display panel2, further according to the object brightness L of the 1024th grayscale of W sub-pixelW2And target Gamma value γ2Determine target display brightness of the W sub-pixel under default input grayscale；
Wherein, the step of calculating target display brightness and target gamma value are as follows:
Wherein, x is the gray number of default input grayscale, LxFor the target display brightness of xth grayscale, L1024For the 1024th grayscale Object brightness, γ are the target gamma value of OLED display panel；
Actual displayed brightness calculation module: for actually entering grayscale pass corresponding with actual displayed brightness according to each sub-pixel System determines actual displayed brightness of each sub-pixel under the default input grayscale of input；
Brightness regulation computing module: for the actual displayed brightness and target according to each sub-pixel under the default input grayscale of input Display brightness determines brightness regulation value；
OLED display panel carries out brightness tune to each sub-pixel for obtaining and storing brightness regulation value, and according to brightness regulation value Section.
6. Gamma regulating system according to claim 5, which is characterized in that the 1024th grayscale of R, G and B sub-pixel Object brightness be HDR400nit when component.
7. Gamma regulating system according to claim 5, which is characterized in that the target of the 1024th grayscale of W sub-pixel Brightness LW1For HDR400nit, LW2For HDR600nit.
8. Gamma regulating system according to claim 5, which is characterized in that the target gamma of the OLED display panel Value γ1It is 2.2.
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