CN109036260A - Data processing method, display driver chip and display equipment - Google Patents
Data processing method, display driver chip and display equipment Download PDFInfo
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- CN109036260A CN109036260A CN201811011924.6A CN201811011924A CN109036260A CN 109036260 A CN109036260 A CN 109036260A CN 201811011924 A CN201811011924 A CN 201811011924A CN 109036260 A CN109036260 A CN 109036260A
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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]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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Abstract
The application provides a kind of data processing method, comprising: test image is output on the display screen, and obtains the brightness data of the display screen；The display screen is divided into luminance compensation region and non-luminance compensation region according to the brightness data；The luminance compensation coefficient in the luminance compensation region is obtained according to the brightness data in the luminance compensation region；And luminance compensation is carried out to the luminance compensation region using the luminance compensation coefficient.Due to the luminance compensation coefficient without calculating and storing non-luminance compensation region, so that memory space needed for saving storage luminance compensation coefficient, thereby reduces production cost.The application provides a kind of display equipment and display driver chip simultaneously.
Description
Technical field
This application involves field of display technology, more particularly, to a kind of data processing method, display driver chip and show
Show equipment.
Background technique
Current OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) panel design, generally makes
With LTPS TFT (low-temperature polysilicon film transistor) and Oxide TFT (metal oxide semiconductor films transistor) technique,
Compared with general amorphous silicon film transistor (amorphous-Si TFT), LTPS TFT and Oxide TFT have higher
Mobility and more stable characteristic are more suitably applied in AMOLED (active-matrix organic light emitting diode (AMOLED) panel) display.?
Low-temperature polysilicon film transistor (LTPS TFT) is mostly used in the processing procedure of small-medium size panel, and in the processing procedure of large size panel
In mostly use oxide thin film transistor (Oxide TFT).This is because LTPS TFT mobility is bigger, device occupied area is more
Small, more suitable for the application of high PPI (Pixels Per Inch, the number of pixels that per inch includes), and Oxide TFT is uniform
Property is more preferable, and technique is compatible with a-Si TFT (amorphous silicon film transistor), is more suitable for producing large scale on advanced lines line
AMOLED panel.
Due to the limitation of crystallization process, the LTPS TFT made in large-area glass substrate, the TFT of different location are normal
Often there is heterogeneity on the electrical parameters such as threshold voltage, mobility, this heterogeneity can be converted into OLED and show
The current difference and luminance difference of device, and perceived by human eye.And although the uniformity of Oxide TFT technique is preferable,
Similar with a-Si TFT, under long-time pressurization and high temperature, threshold voltage will appear drift, since display picture is different, face
The threshold drift amount of plate each section TFT is different, will cause display brightness difference, since luminance difference has with the image shown before
It closes, therefore is often rendered as ghost phenomena on the screen.It is existing that luminance difference under above-mentioned both of these case is referred to as Mura (moire)
As
For the prior art, Mura phenomenon can be compensated by some modes, and then reduce Mura phenomenon, this
Scheme is referred to as De-mura (removing moire).
In the prior art, it is a kind of commonly using De-mura method be in the peripheral drive circuit of display device lead to
Overcompensation coefficient compensates image, and this compensation way first carries out Mura analysis according to test image, obtains Mura aobvious
Location information on display screen curtain and luminance compensation coefficient is calculated accordingly, the luminance compensation is then applied in the image shown later
Coefficient carries out luminance compensation, to improve the consistency of image frame, so that viewing effect is improved.
However, the storage of luminance compensation coefficient needs additional memory headroom, especially for high-resolution display screen
Curtain, memory headroom needed for storing luminance compensation coefficient will will increase dramatically, so that the manufacturing cost of display equipment is increased, drop
The feasibility of low De-Mura.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of data processing method, display screen is divided into luminance compensation region
With non-luminance compensation region, the luminance compensation coefficient in luminance compensation region is only calculated and obtains, to reduce luminance compensation system
The required memory headroom of number, reduces the manufacturing cost of display equipment.
According to a first aspect of the present application, a kind of data processing method is provided, comprising:
Test image is output on the display screen, and obtains the brightness data of the display screen；
The display screen is divided into luminance compensation region and non-luminance compensation region according to the brightness data；
The luminance compensation coefficient in the luminance compensation region is obtained according to the brightness data in the luminance compensation region；And
Luminance compensation is carried out to the luminance compensation region using the luminance compensation coefficient.
Preferably, described the display screen is divided into luminance compensation region and non-luminance compensation region to include:
The first display unit is selected from the display screen, whether the Mura information for detecting first display unit is big
In the first preset threshold；
If the Mura information of first display unit is greater than the first preset threshold,
Then the display unit with maximum Mura information is selected from the adjacent display cell of first display unit to make
For the second display unit；And
It repeats the above steps, until selecting in the adjacent display cell from the n-th display unit with maximum Mura information
As the n-th display unit, first display unit to (n+1) display unit constitutes the brightness and mends display unit
Region is repaid, n is greater than the positive integer equal to 1.
Preferably, described the display screen is divided into luminance compensation region and non-luminance compensation region to include:
The first display unit is selected from the display screen, whether the Mura information for detecting first display unit is big
In the first preset threshold；
If the Mura information of first display unit is greater than the first preset threshold,
Whether the Mura information for then detecting the adjacent display cell of first display unit is greater than the described first default threshold
Value, and will be greater than the display unit of first preset threshold as the second display unit；And
Repeat the above steps, until m display unit adjacent display cell Mura information no more than described first
Preset threshold, first display unit to the m display unit constitute the luminance compensation region, and m is greater than equal to 1
Positive integer.
Preferably, each display unit is made of the continuous pixel unit of identical quantity respectively.
Preferably, the brightness that the brightness data according to the luminance compensation region obtains the luminance compensation region is mended
It by the luminance compensation region division is multiple compensation sub-districts that repay coefficient, which include: according to the brightness data in the luminance compensation region,
Domain, and obtain the penalty coefficient of each compensation subregion.
Preferably, the luminance compensation region division is multiple by the brightness data according to the luminance compensation region
Subregion is compensated, and the penalty coefficient for obtaining each compensation subregion includes:
Judge the luminance compensation region for coarse compensation or thin compensation；
If the luminance compensation region is thin compensation, the luminance compensation region is divided into the thin compensation of the second quantity
Subregion, and obtain the penalty coefficient of each thin compensation subregion；
If the luminance compensation region is coarse compensation, the luminance compensation region is divided into the coarse compensation of the first quantity
Subregion, and obtain the penalty coefficient of each coarse compensation subregion；
Wherein, first quantity is less than second quantity,
It is then described to include: to luminance compensation region progress luminance compensation using the luminance compensation coefficient
Each thin compensation subregion or each coarse compensation subregion are using respective penalty coefficient progress luminance compensation.
Preferably, the brightness data according to the luminance compensation region judges the luminance compensation region for coarse compensation
Or thin compensation includes:
Whether the average Mura information for detecting the luminance compensation region is greater than the second preset threshold；
If the average Mura information in the luminance compensation region is greater than second preset threshold, the luminance compensation
Region is thin compensation, described if the average Mura information in the luminance compensation region is not more than second preset threshold
Luminance compensation region is coarse compensation, and the average Mura information is the Mura letter of all pixels unit in the luminance compensation region
The quantity for the pixel unit that the sum of breath includes divided by the luminance compensation region.
Preferably, further includes: before carrying out luminance compensation to the luminance compensation region using the luminance compensation coefficient,
Store the luminance compensation coefficient in luminance compensation region.
Preferably, further includes:
Obtain the chroma data of the display screen；
The display screen is divided into chromatic compensation region and non-chromatic compensation region according to the chroma data；
The chromatic compensation coefficient in the chromatic compensation region is obtained according to the chroma data in the chromatic compensation region；And
Chromatic compensation is carried out to the chromatic compensation region using the chromatic compensation coefficient.
Preferably, the luminance compensation region is multiple.
Preferably, the luminance compensation region division is multiple by the brightness data according to the luminance compensation region
Subregion is compensated, and the penalty coefficient for obtaining each compensation subregion includes:
Determine that the luminance compensation region is slight compensation, severe compensation according to the brightness data in the luminance compensation region
Or severe compensation；And
The luminance compensation region is divided into multiple compensation subregions according to different compensation types, and obtains each benefit
Repay the penalty coefficient of subregion.
According to a second aspect of the embodiments of the present invention, a kind of display driver chip is provided, including static access memory and
Image processing unit, the static access memory are used to store the bright of the luminance compensation region that above-mentioned data processing method obtains
Penalty coefficient is spent, described image processing unit carries out luminance compensation to the display image of input according to the luminance compensation coefficient of reading
Processing, and export compensated input picture.
According to a third aspect of the embodiments of the present invention, a kind of display equipment is provided, comprising:
Show screen；
Memory, for storing the luminance compensation coefficient in the luminance compensation region obtained in above-mentioned data processing method；
Display driver chip, including dynamic ram and image processing unit, the dynamic ram are used for
Cache the luminance compensation coefficient that reads from the memory, described image processing unit is according to the luminance compensation coefficient pair of reading
The display image of input carries out luminance compensation, and shows compensated input picture via the display screen.
Preferably, described to show equipment for the display of any one in Mini LED, microLED, LED, OLED and LCD
Equipment.
In one embodiment, display screen is divided into luminance compensation region and non-luminance compensation region, and obtained bright
The luminance compensation coefficient for spending compensatory zone, without calculating and storing the luminance compensation coefficient in non-luminance compensation region, to save
Memory space needed for storage luminance compensation coefficient, thereby reduces production cost.
Further, the judgement of type is compensated to luminance compensation region, and based on judging result to luminance compensation area
Domain divides different compensation subregions and carries out careful luminance compensation, to improve luminance compensation effect.
It further, whether is more than that preset threshold is judged as coarse compensation also according to the average Mura information in luminance compensation region
It is carefully to compensate, so that the operation of luminance compensation is more targeted.
Detailed description of the invention
Description by referring to the following drawings to the embodiment of the present application, the above-mentioned and other purpose of the application, feature and
Advantage will be apparent from, in the accompanying drawings:
Fig. 1 is the flow chart of the data processing method of first embodiment of the invention；
Fig. 2 is the schematic diagram for showing multiple pixel units of screen；
Fig. 3 is the flow chart of the data processing method of second embodiment of the invention；
Fig. 4 is the flow chart of the data processing method of third embodiment of the invention；
Fig. 5 is the flow chart of the data processing method of fourth embodiment of the invention；
Fig. 6 is the schematic diagram for showing multiple luminance compensation regions on screen；
Fig. 7 is the structural schematic diagram of the display equipment of the embodiment of the present invention.
Specific embodiment
Hereinafter reference will be made to the drawings is more fully described the application.In various figures, identical element is using similar attached
Icon is remembered to indicate.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.Furthermore, it is possible to be not shown certain
Well known part.
Fig. 1 is the flow chart of the data processing method of first embodiment of the invention.The processing method is applied to such as
In the display equipment of LED, OLED and LCD type, following steps are specifically included.
In step s101, testing image is exported to display screen.Show that screen is such as smart phone, internet electricity
The screen of equipment is shown depending on machine, IPAD etc..In this step, preprepared test image is output to display screen.
In step s 102, the brightness data of display screen is obtained.Brightness data is to indicate the fooled preceding picture of display screen
Light levels data.In the prior art, it obtains the brightness data on display screen and is divided into optics extraction-type and electricity extraction
Formula.Optics extraction-type refers to backboard is lighted after by optical CCD (charge coupled cell) take a picture method luminance signal is taken out
It takes out.Electricity extraction-type, which refers to, is extracted the electrical signal of TFT and OLED by the sensor circuit of driving chip.Optics
The mode of extraction has structure simple, the flexible advantage of method, therefore is widely adopted at this stage.Electricity is extracted due to needing
The cooperation of panel design circuit needs to be added circuit in panel design, but in the panel circuit of current high PPI, is added additional
Detection circuit it is difficult, basically can not be applied in the panels such as mobile phone at present.
In step s 103, it will show that screen is divided into luminance compensation region and non-luminance compensation region according to brightness data.
When test image is partially bright or partially dark (including Mura) in brightness data of the brightness ratio at this of some region actual displayed, then
The region should carry out luminance compensation, be luminance compensation region, if test image some region actual displayed brightness and
The brightness that should be shown is roughly the same, then the region does not need to carry out luminance compensation, is non-luminance compensation region.Based on brightness data
Mura information determine luminance compensation region and non-luminance compensation region.As described in the background art, it tests on the display screen
Luminance difference between the brightness of the actual displayed of image and the brightness data of test image is referred to as Mura, and indicates that Mura is big
Small information abbreviation Mura information herein.
One divides the example in luminance compensation region and non-luminance compensation region are as follows: refers to Fig. 2, first finds display unit
Unit1 (center of display screen), whether the Mura detected at unit1 is more than given threshold, if it exceeds given threshold,
Whether the Mura for detecting its adjacent display unit is more than given threshold, it is assumed that only the Mura of unit2 is more than given threshold, then again
Whether the Mura for detecting the adjacent display unit of unit2 is more than given threshold, and so on, it is all until obtaining a periphery
The Mura of pixel unit is no more than the display unit of given threshold, and by unit1, these Mura of unit2 ... ..., unitm are super
The display unit for crossing given threshold is grouped together, and as luminance compensation region, and shows the rest part of screen as non-bright
Compensatory zone is spent, m is greater than the positive integer equal to 1.Another divides the example in luminance compensation region and non-luminance compensation region
Are as follows: first display unit is first found, judges whether the Mura of the display unit is greater than preset threshold, if it is, from this
The display unit with maximum Mura is selected in the adjacent display cell of display unit as the second display unit, then second
The display unit with maximum Mura is selected in the adjacent display cell of display unit as third display unit, and so on,
Until selecting the display unit with maximum Mura information in the adjacent display cell from (n) display unit as the n-th display
Unit, n are greater than the positive integer equal to 1, and the first display unit to (n+1) display unit constitutes luminance compensation region.
In an alternative embodiment, above-mentioned display unit includes one or more continuous pixel units.
In another alternative embodiment, it divides through the above way on the display screen two or more bright
Spend compensatory zone.
In step S104, the luminance compensation system in luminance compensation region is obtained according to the brightness data in luminance compensation region
Number.In this step, according to the brightness data in above-mentioned luminance compensation region, Mura information is obtained, and is carried out according to Mura information
Compensating Modeling, to obtain the luminance compensation coefficient in luminance compensation region.
In step s105, luminance compensation is carried out to luminance compensation region using luminance compensation coefficient.Based on step S104
The luminance compensation coefficient in the luminance compensation region of acquisition carries out luminance compensation to luminance compensation region, to non-luminance compensation region,
Without luminance compensation.
The Mura due to caused by the producing line of display equipment generally has regionality, luminance compensation region and non-bright
Degree region generally has apparent boundary.According to this embodiment, it can only obtain the luminance compensation coefficient in luminance compensation region, nothing
The luminance compensation coefficient in non-luminance compensation region need to be calculated and store, thus storage needed for saving storage luminance compensation coefficient
Space thereby reduces production cost.
It should be noted that above-mentioned steps S101-S105 can be repeated in the producing line stage of display equipment, for example,
First group of luminance compensation coefficient is first obtained based on step S101-S104, step S105 is then based on and carries out luminance compensation, then will
The image of S105 output is input in step S101, obtains second group of luminance compensation coefficient based on step S101-S104 again, so
Step S105 exports compensated image afterwards, and so on, until the image of S105 output no longer needs to carry out luminance compensation.Most
Eventually, final luminance compensation coefficient is determined according to multiple groups luminance compensation coefficient.Final luminance compensation coefficient is stored in display
In the memory of equipment.After showing equipment factory, the image that user watches every time can be using the brightness stored in memory
Penalty coefficient carries out luminance compensation.
In an alternative embodiment, above-mentioned processing method further include: when test image is output to display screen,
Obtain the chroma data of display screen；It will show that screen is divided into chromatic compensation region and non-chromatic compensation area according to chroma data
Domain；The chromatic compensation coefficient in chromatic compensation region is obtained according to the chroma data in chromatic compensation region；And use chromatic compensation
Coefficient carries out chromatic compensation to chromatic compensation region.
Fig. 3 is the flow chart of the data processing method of second embodiment of the invention.The processing method 300 includes following step
Suddenly.
In step S301, test image is output on display screen.
In step s 302, the brightness data of display screen is obtained.
In step S303, it will show that screen is divided into luminance compensation region and non-luminance compensation region according to brightness data.
In step s 304, judge luminance compensation region for coarse compensation or thin compensation.When luminance compensation region is thick mends
When repaying, step S306 is executed, when luminance compensation region is thin compensation, executes step S305.
In step S305, luminance compensation region is divided into multiple thin compensation subregions, and obtains each thin compensation
The penalty coefficient of subregion.
In step S306, luminance compensation region is divided into multiple coarse compensation subregions, and obtain each coarse compensation
The penalty coefficient of subregion.
In step S307, luminance compensation is carried out using each thin respective penalty coefficient of compensation subregion.
In step S308, luminance compensation is carried out using the respective penalty coefficient of each coarse compensation subregion.Thin compensation
The area in region is less than the area of coarse compensation subregion.
Specifically, in the present embodiment, step 301-303 is identical with step S101-S103 shown in FIG. 1, here just not
It repeats again.And in step S304-S308, judge that luminance compensation region needs coarse compensation or thin compensation according to brightness data,
If luminance compensation region needs thin compensation, luminance compensation region is divided into multiple thin compensation subregions, according to brightness number
According to the penalty coefficient for obtaining each thin compensation subregion, and according to the penalty coefficient of each thin compensation subregion to each thin benefit
It repays region itself and carries out luminance compensation；If luminance compensation region needs coarse compensation, luminance compensation region is divided into multiple
Coarse compensation subregion obtains the penalty coefficient of each coarse compensation subregion according to brightness data, and according to each coarse compensation sub-district
The penalty coefficient in domain carries out luminance compensation to each coarse compensation region itself.The area of thin compensation subregion is less than coarse compensation
The area in region.
In the present embodiment, the judgement for coarse compensation being carried out to luminance compensation region or carefully being compensated, and the brightness that will carefully compensate
Compensatory zone divides equally the compensation subregion of more small area and carries out finer luminance compensation, to improve luminance compensation effect
Fruit.
Fig. 4 is the flow chart of the data processing method of third embodiment of the invention.As can be seen that in the embodiment of Fig. 4, only
Have the correspondence step S304 of step S404 and Fig. 3 different, remaining the step of it is all the same.Therefore following to highlight step S404.
This step S404 judges the optional embodiment that luminance compensation region compensates for coarse compensation or carefully.Specifically, based on bright
Whether the average Mura information of degree compensatory zone is greater than a preset threshold to determine luminance compensation region as coarse compensation or thin benefit
It repays, if the average Mura information in luminance compensation region is greater than preset threshold, determines that luminance compensation region needs thin compensation, otherwise
Determine that luminance compensation region needs coarse compensation.The average Mura information in luminance compensation region is equal to all pictures in luminance compensation region
The sum of Mura information of plain unit divided by it includes pixel unit quantity.Certainly, the present invention is not limited only to this.At another
In example, if thering is the Mura information of m pixel unit to be greater than a given threshold, and m is greater than another in luminance compensation region
A given threshold then can determine that the luminance compensation region needs thin compensation.
It in the present embodiment, whether is more than that preset threshold is judged as thick benefit according to the average Mura information in luminance compensation region
Repayment is carefully to compensate, and keeps the operation of luminance compensation more targeted.
Fig. 5 is the flow chart of the data processing method of fourth embodiment of the invention.Specifically include following steps.
In step S501, test image is output on display screen.
In step S502, the brightness data of display screen is obtained.
In step S503, it will show that screen is divided into multiple luminance compensation regions and non-luminance compensation area according to brightness data
Domain.
In step S504, the compensation type in each luminance compensation region is judged.When compensating type is slightly to compensate, hold
Row step S505 executes step s507 when compensating type is moderate compensation, when compensating type is severe compensation, executes step
Rapid S509.The judgement for compensating type is based on brightness data, such as the average Mura information based on luminance compensation region judges compensation
When type, average Mura information are greater than the first numerical value and are less than second value, for slight compensation, if average Mura information is greater than the
It when two numerical value are less than third value, compensates for moderate, if average Mura information is greater than third value, is compensated for severe.But this
The judgement of compensation type in invention is without being limited thereto.
In step S505, with the first area by luminance compensation region division for multiple compensation subregions, and obtain respective
Penalty coefficient.
In step S506, luminance compensation is carried out using respective penalty coefficient.
In step s 507, with second area by luminance compensation region division for multiple compensation subregions, and obtain respective
Penalty coefficient.
In step S508, luminance compensation is carried out using respective penalty coefficient.
In step S509, with third area by luminance compensation region division for multiple compensation subregions, and obtain respective
Penalty coefficient.
In step S510, luminance compensation is carried out using respective penalty coefficient.
In the present embodiment, for each luminance compensation region, judge to compensate type, compensation type include slight compensation,
Moderate compensation and severe compensation.When compensating type difference, which is drawn, compensation subregion is divided with different areas
And respective penalty coefficient is obtained to carry out luminance compensation.Wherein the first area > second area > third area.
Fig. 6 is the schematic diagram for showing multiple luminance compensation regions on screen.The present embodiment is carried out more below with reference to Fig. 6
Careful explanation.
As shown in Figure 6, it is assumed that will show that screen is divided into 1-6 region according to brightness data, wherein 5 and 6 brightness is equal
Evenness is preferable, and as non-compensatory zone, and remaining region is luminance compensation region.And then it will be each according to respective brightness data
The compensation subregion of luminance compensation region division different number.Specifically, region 1 and 4 is drawn respectively with the pixel unit of 25*25
It is divided into several compensation subregions, region 3 is divided into several compensation subregions with the pixel unit of 16*25, and by region 2
Several compensation subregions are divided into the pixel unit of 5*5.Assuming that 1 and 4 respectively obtain 10 compensation subregions, 2 obtain 40
A compensation subregion, 3 obtain 5 compensation subregions.The penalty coefficient of each compensation subregion and the position letter of compensation subregion
Breath storage is into display equipment.It is assumed that penalty coefficient is stored using 10bit, initial position is stored using 2bit, compensates subregion
Size stored using 10bit, number of blocks is using 7bit storage, then storage size needed for above-mentioned brightness data are as follows:
Storage size needed for region 1 and 4 are as follows: 10* (2+10+10) * 2=440；
Storage size needed for region 3 are as follows: 5* (2+10+10)=110；
Storage size needed for region 2 are as follows: 40* (2+10+10)=880.Sum is 1430.
In summary, the area of compensation subregion can be set according to brightness data, and then determines the number of compensation subregion
The penalty coefficient of mesh and each compensation subregion, so as to carry out different degrees of compensation according to brightness data, so that compensation
More targetedly, compensation effect is more preferable.
Fig. 7 is the structural schematic diagram of the display equipment of the embodiment of the present invention.Display equipment 700 includes display screen 703, deposits
Reservoir 702 and display driver chip 701.Memory 702 is used to store the luminance compensation coefficient in luminance compensation region.Specifically,
In the producing line stage of display equipment, the luminance compensation coefficient of acquisition is burnt in the memory 702 of display equipment.Memory
702 be a kind of nonvolatile memory, such as flash memory, and data will not lose after power-off.
Display driver chip 701 and memory 702 are electrically connected, including at dynamic ram (RAM) 7011 and image
Unit 7012 is managed, access memory 7011 is used to cache the luminance compensation coefficient in input picture 601 and luminance compensation region, figure
As processing unit 7012 is used to carry out luminance compensation to input picture 601 according to luminance compensation coefficient, and by compensated image
It is output on display screen 703 and shows.The data of dynamic ram are lost after a loss of power.
Each display equipment is completed as a result, in the calculating and burning that require completion luminance compensation coefficient in the producing line stage
The time spent required for the offset data of each display equipment is the time spent in penalty coefficient calculates plus penalty coefficient
It is sequentially written in the time of memory.Therefore, when using the processing method of the embodiment of the present invention, display screen is divided into brightness
Compensatory zone and non-luminance compensation region, and the luminance compensation coefficient in luminance compensation region is obtained, it is non-bright without calculating and storing
The luminance compensation coefficient of compensatory zone, memory space needed for luminance compensation coefficient can not only be saved are spent, and can be saved
Luminance compensation data are written to the time consumed in memory, to improve the output capacity of display equipment and reduce production
Cost.
With the development of the manufacturing process of display equipment, one piece of static state can also be increased in above-mentioned display driver chip 701
Access memory is used to store the luminance compensation coefficient in luminance compensation region, after showing equipment factory, when playing display image,
Without reading luminance compensation coefficient from memory, but luminance compensation coefficient is read directly from static access memory to aobvious
Diagram picture carries out luminance compensation.The data of static access memory are not lost after a loss of power.
Above-mentioned chromatic compensation can also be implemented in above-mentioned display equipment.For example, display screen is divided into chromatic compensation area
Domain and non-chromatic compensation region show image whenever playing by the storage of chromatic compensation coefficient into memory, and by after factory
When, chromatic compensation coefficient, which is obtained, from memory carries out chromatic compensation.For another example increasing by one piece of static state in display driver chip
Memory is accessed, for storing chromatic compensation coefficient, whenever playing display image, coloration is obtained from static access memory
Penalty coefficient carries out chromatic compensation.
Although the embodiment of the present application is disclosed as above with preferred embodiment, its be not for limiting claim, it is any
Those skilled in the art are not departing from spirit and scope, can make possible variation and modification, therefore this
The protection scope of application should be subject to the range that the claim of this application is defined.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art
For, the application can have various modifications and changes.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of protection of this application.
Claims (14)
1. a kind of data processing method, comprising:
Test image is output on the display screen, and obtains the brightness data of the display screen；
The display screen is divided into luminance compensation region and non-luminance compensation region according to the brightness data；
The luminance compensation coefficient in the luminance compensation region is obtained according to the brightness data in the luminance compensation region；And
Luminance compensation is carried out to the luminance compensation region using the luminance compensation coefficient.
2. data processing method according to claim 1, wherein described that the display screen is divided into luminance compensation region
Include: with non-luminance compensation region
The first display unit is selected from the display screen, whether the Mura information for detecting first display unit is greater than the
One preset threshold；
If the Mura information of first display unit is greater than the first preset threshold,
The display unit with maximum Mura information is then selected from the adjacent display cell of first display unit as the
Two display units；And
It repeats the above steps, until selecting the display with maximum Mura information in the adjacent display cell from the n-th display unit
Unit constitutes the luminance compensation area as the n-th display unit, first display unit to (n+1) display unit
Domain, n are greater than the positive integer equal to 1.
3. data processing method according to claim 1, wherein described that the display screen is divided into luminance compensation region
Include: with non-luminance compensation region
The first display unit is selected from the display screen, whether the Mura information for detecting first display unit is greater than the
One preset threshold；
If the Mura information of first display unit is greater than the first preset threshold,
Whether the Mura information for then detecting the adjacent display cell of first display unit is greater than first preset threshold, and
The display unit of first preset threshold be will be greater than as the second display unit；And
It repeats the above steps, until the Mura information of the adjacent display cell of m display unit is default no more than described first
Threshold value, first display unit to the m display unit constitute the luminance compensation region, and m is greater than equal to 1 just
Integer.
4. data processing method according to claim 2 or 3, wherein each display unit is continuous by identical quantity
Pixel unit composition.
5. processing method according to claim 1, wherein described to be obtained according to the brightness data in the luminance compensation region
The luminance compensation coefficient in the luminance compensation region includes:
According to the brightness data in the luminance compensation region by the luminance compensation region division be multiple compensation subregions, and
To the penalty coefficient of each compensation subregion.
6. data processing method according to claim 5, the brightness data according to the luminance compensation region is by institute
Stating luminance compensation region division is multiple compensation subregions, and the penalty coefficient for obtaining each compensation subregion includes:
Judge the luminance compensation region for coarse compensation or thin compensation；
If the luminance compensation region is thin compensation, the luminance compensation region is divided into the thin compensation sub-district of the second quantity
Domain, and obtain the penalty coefficient of each thin compensation subregion；
If the luminance compensation region is coarse compensation, the luminance compensation region is divided into the coarse compensation sub-district of the first quantity
Domain, and obtain the penalty coefficient of each coarse compensation subregion；
Wherein, first quantity is less than second quantity,
It is then described to include: to luminance compensation region progress luminance compensation using the luminance compensation coefficient
Luminance compensation is carried out using each thin compensation subregion or the respective penalty coefficient of each coarse compensation subregion.
7. data processing method according to claim 6, wherein it is described judge the luminance compensation region for coarse compensation also
It is that thin compensation includes:
Whether the average Mura information for detecting the luminance compensation region is greater than the second preset threshold；
If the average Mura information in the luminance compensation region is greater than second preset threshold, the luminance compensation region
Carefully to compensate, if the average Mura information in the luminance compensation region is not more than second preset threshold, the brightness
Compensatory zone is coarse compensation, the average Mura information be all pixels unit in the luminance compensation region Mura information it
With the quantity for the pixel unit for including divided by the luminance compensation region.
8. data processing method according to claim 1, further includes: the brightness in storage luminance compensation region is mended
Repay coefficient.
9. data processing method according to claim 1, further includes:
Obtain the chroma data of the display screen；
The display screen is divided into chromatic compensation region and non-chromatic compensation region according to the chroma data；
The chromatic compensation coefficient in the chromatic compensation region is obtained according to the chroma data in the chromatic compensation region；And
Chromatic compensation is carried out to the chromatic compensation region using the chromatic compensation coefficient.
10. data processing method according to claim 1, wherein the luminance compensation region is multiple.
11. processing method according to claim 5, wherein described to be incited somebody to action according to the brightness data in the luminance compensation region
The luminance compensation region division is multiple compensation subregions, and the penalty coefficient for obtaining each compensation subregion includes:
Determine the luminance compensation region for slight compensation, severe compensation still according to the brightness data in the luminance compensation region
Severe compensation；And
The luminance compensation region is divided into multiple compensation subregions according to different compensation types, and obtains each compensation
The penalty coefficient in region.
12. a kind of display driver chip, including static access memory and image processing unit, the static access memory is used
Luminance compensation coefficient in the luminance compensation region that the described in any item data processing methods of storage claim 1-11 obtain, institute
It states image processing unit and luminance compensation processing is carried out to the display image of input according to the luminance compensation coefficient of reading, and export benefit
Input picture after repaying.
13. a kind of display equipment, comprising:
Show screen；
Memory, for storing the bright of the luminance compensation region obtained in such as described in any item processing methods of claim 1-11
Spend penalty coefficient；
Display driver chip, including dynamic ram and image processing unit, the dynamic ram is for caching
The luminance compensation coefficient read from the memory, described image processing unit is according to the luminance compensation coefficient of reading to input
Display image carry out luminance compensation, and show compensated input picture via the display screen.
14. display equipment described in 12 according to claim 1, wherein the display equipment be Mini LED, microLED,
The display equipment of any one in LED, OLED and LCD.
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