CN106782306B - A kind of brightness adjusting method and brightness control system of OLED display panel - Google Patents
A kind of brightness adjusting method and brightness control system of OLED display panel Download PDFInfo
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- CN106782306B CN106782306B CN201710054735.6A CN201710054735A CN106782306B CN 106782306 B CN106782306 B CN 106782306B CN 201710054735 A CN201710054735 A CN 201710054735A CN 106782306 B CN106782306 B CN 106782306B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention discloses a kind of brightness adjusting method of OLED display panel and brightness control systems.The brightness adjusting method includes: actual displayed brightness of each sub-pixel of acquisition OLED display panel in the case where actually entering voltage, and calculates the corresponding relationship for actually entering voltage Yu actual displayed brightness of each sub-pixel；Target display brightness OLED display panel using the mean value of display brightness of all sub-pixels of OLED display panel same color when inputting default input voltage as all sub-pixels of same color under default input voltage；Target input voltage of each sub-pixel in displaying target display brightness is determined according to the corresponding relationship for actually entering voltage and actual displayed brightness of each sub-pixel；Using the target input voltage of each sub-pixel and the difference of default input voltage as voltage compensation value, voltage compensation is carried out to feed back to OLED display panel.The embodiment of the present invention improves the non-uniform light between each sub-pixel of OLED display panel.
Description
Technical field
The present embodiments relate to the brightness adjusting methods of display technology more particularly to a kind of OLED display panel and bright
Spend regulating system.
Background technique
With the development of display technology, show that the display effect of product is constantly improved, to make to show product
Using more and more extensive.
However, existing OLED display panel, be easy to cause son due to manufacturing process and luminescent material aging etc.
When inputting identical picture signal, display brightness is different for non-uniform light between pixel, the i.e. sub-pixel of same color, influences
Image displaying quality.
Generally use the mode to the compensation of thin film transistor (TFT) driving circuit in the prior art to improve non-uniform light, however
This method generally requires to design more complex pixel circuit, not only increases technology difficulty, and limit light emitting region
Area cannot achieve higher per inch number of pixels (Pixels Per Inch, PPI).
Summary of the invention
The present invention provides the brightness adjusting method and brightness control system of a kind of OLED display panel, aobvious to improve OLED
Show the non-uniform light between each sub-pixel of panel.
In a first aspect, the embodiment of the invention provides a kind of brightness adjusting method of OLED display panel, the brightness tune
Section method includes:
Actual displayed brightness of each sub-pixel of OLED display panel in the case where actually entering voltage is obtained, and calculates each sub- picture
The corresponding relationship for actually entering voltage Yu actual displayed brightness of element；
By the equal of display brightness of all sub-pixels of OLED display panel same color when inputting default input voltage
Value as same color all sub-pixels preset input voltage under target display brightness；Reality according to each sub-pixel is defeated
The corresponding relationship for entering voltage and actual displayed brightness determines target input voltage of each sub-pixel in displaying target display brightness；
Using the target input voltage of each sub-pixel and the difference of default input voltage as voltage compensation value, to feed back to
OLED display panel carries out voltage compensation.
Second aspect, the embodiment of the invention also provides a kind of brightness control systems of OLED display panel, including data
Processing unit and OLED display panel, 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 voltage
Display brightness, and calculate the corresponding relationship for actually entering voltage Yu actual displayed brightness of each sub-pixel；
Target display brightness obtains module, for all sub-pixels of OLED display panel same color are default in input
The mean value of display brightness when input voltage is shown as target of all sub-pixels under default input voltage of same color
Brightness；
Target input voltage determining module, for pair for actually entering voltage Yu actual displayed brightness according to each sub-pixel
It should be related to the target input voltage for determining each sub-pixel in displaying target display brightness；
Voltage compensation value determining module, for making the difference of the target input voltage of each sub-pixel and default input voltage
For voltage compensation value, voltage compensation is carried out to feed back to OLED display panel.
The embodiment of the present invention passes through the corresponding relationship for actually entering voltage Yu actual displayed brightness for calculating each sub-pixel, and
Determine that each sub-pixel is shown in displaying target according to the corresponding relationship for actually entering voltage and actual displayed brightness of each sub-pixel
Target input voltage when brightness, and then using the target input voltage of each sub-pixel and the difference of default input voltage as voltage
Offset feeds back to OLED display panel and carries out voltage compensation, and brightness regulation precision with higher can preferably improve
Non-uniform light between each sub-pixel of OLED display panel, and without increasing OLED display panel complicated circuit, drop
Low technology difficulty, so that higher PPI may be implemented in OLED display panel.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the brightness adjusting method for OLED display panel that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of the brightness control system of OLED display panel provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the brightness control system of another OLED display panel provided in an embodiment of the present invention；
Fig. 4 is actual displayed brightness curve and the signal of target display brightness curve of sub-pixel provided in an embodiment of the present invention
Figure.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of flow chart of the brightness adjusting method for OLED display panel that the embodiment of the present invention one provides, reference
Fig. 1, the brightness adjusting method can specifically include following steps:
Step 110 obtains actual displayed brightness of each sub-pixel of OLED display panel in the case where actually entering voltage, and counts
Calculate the corresponding relationship for actually entering voltage Yu actual displayed brightness of each sub-pixel.
Specifically, the OLED display panel includes multiple sub-pixels.Multiple realities available for each sub-pixel
Actual displayed brightness under the input voltage of border is calculated each sub-pixel and actually enters voltage by interpolation or fitting scheduling algorithm
With the corresponding relationship of actual displayed brightness.
Optionally, the OLED display panel obtained according to optical pickup actually enters aobvious under voltage in input
Diagram picture obtains actual displayed brightness of each sub-pixel of the OLED display panel in the case where actually entering voltage.
Specifically, it is aobvious to obtain one or more OLED in the case where each actually enters voltage by optical pickup
Show the display image of panel, and obtains the actual displayed brightness of each sub-pixel from the display image.
Optionally, the optical pickup can be charge-coupled device (Charge-coupled Device, CCD)
Camera.Using CCD camera acquisition OLED display panel display image, the available display brightness to each sub-pixel,
Improve brightness regulation precision.
Step 120, the display by all sub-pixels of OLED display panel same color when inputting default input voltage
All sub-pixels target display brightness under the default input voltage of the mean value of brightness as the same color.
Illustratively, if being obtained according to the corresponding relationship that each sub-pixel actually enters voltage and actual displayed brightness default
When input voltage is U, the actual displayed brightness of each red sub-pixel is respectively L1, L2 ... Ln, it is determined that each red sub-pixel
The corresponding target display brightness of default input voltage U be (L1+L2+ ... Ln)/n, can similarly obtain the sub-pixel of other colors
Target display brightness.Specifically, all sub-pixels by setting same color are inputting the same default input voltage
When display brightness mean value as the target display brightness so that the brightness adjustment of each sub-pixel is smaller, adjust speed
Faster, precision is higher for degree.
Optionally, the default input voltage can be determined according to the standard corresponding relationship of input voltage and display brightness
Corresponding display brightness is the target display brightness.
Specifically, can be according to human eye to the determining input voltage of comfort level requirement and display brightness for showing image
Standard corresponding relationship, can also be according to user it needs to be determined that the standard corresponding relationship of the input voltage and display brightness.Pass through
It is bright to determine that the corresponding target of the default input voltage is shown according to input voltage and the standard corresponding relationship of display brightness
Degree can preferably adapt to the comfort level requirement of human eye and wanting for user while eliminating brightness irregularities between sub-pixel
It asks.
Specifically, corresponding target display brightness can be arranged to each default input voltage, when defeated according to the reality
Enter voltage and actual displayed brightness corresponding relationship determine display brightness of the sub-pixel in the case where inputting the default input voltage with
When the difference of target display brightness is greater than preset threshold, brightness regulation is carried out to the sub-pixel, so that the reality of all sub-pixels
Display brightness is equal to target display brightness or is less than preset threshold with the difference of target display brightness.Wherein, the preset threshold
It can according to need and set, and be not specifically limited.
Step 130 determines respectively according to the corresponding relationship for actually entering voltage and actual displayed brightness of each sub-pixel
Target input voltage of the sub-pixel when showing the target display brightness.
Specifically, determining the target input voltage of each sub-pixel according to the target display brightness.The present embodiment due to
The target input voltage of each sub-pixel is to actually enter voltage pass corresponding with actual displayed brightness according to each sub-pixel
System's determination, brightness regulation precision with higher can preferably eliminate shining between each sub-pixel of OLED display panel
Unevenly, image displaying quality is further increased.
Step 140, using the difference of the target input voltage of each sub-pixel and the default input voltage as voltage
Offset carries out voltage compensation to feed back to the OLED display panel.
Specifically, the voltage compensation value is fed back to OLED display panel, OLED display panel, can when image is shown
To search corresponding voltage compensation value according to the luma data of sub-pixel each in image or brightness data, and according to the voltage
Offset carries out voltage compensation to each sub-pixel, to improve the brightness irregularities of each sub-pixel, improves image displaying quality.
The present embodiment by calculating the corresponding relationship for actually entering voltage Yu actual displayed brightness of each sub-pixel, and according to
The corresponding relationship for actually entering voltage and actual displayed brightness of each sub-pixel determines that each sub-pixel is showing the target
Target input voltage when display brightness, and then by the target input voltage of each sub-pixel and the default input voltage
Difference feeds back to the OLED display panel and carries out voltage compensation as voltage compensation value, brightness regulation precision with higher,
The non-uniform light between each sub-pixel of OLED display panel can be preferably eliminated, it is complicated without increasing OLED display panel
Circuit, technology difficulty is reduced, so that OLED display panel may be implemented higher PPI, and voltage and display brightness
Corresponding relationship is not influenced by gamma value and OLED display panel display pattern (hi-bright mode, battery saving mode etc.) etc., so that
When gamma value changes and when display pattern switches, the luminance nonuniformity between each sub-pixel of OLED display panel still can be eliminated
It is even.
Fig. 2 is a kind of structural schematic diagram of the brightness control system of OLED display panel provided in an embodiment of the present invention, ginseng
Fig. 2 is examined, the brightness control system specifically includes:
Data processing equipment 310 and OLED display panel 320；
Data processing equipment 310 is defeated including corresponding relationship computing module 210, target display brightness acquisition module 220, target
Enter voltage determination module 230 and voltage compensation value determining module 240；Wherein,
Each sub-pixel 321 that corresponding relationship computing module 210 is used to obtain OLED display panel 320 is actually entering voltage
Under actual displayed brightness, and calculate the corresponding relationship for actually entering voltage Yu actual displayed brightness of each sub-pixel 321；
Target display brightness obtains module 220 and is used for all sub-pixels 321 of OLED display panel same color defeated
The mean value of display brightness when entering default input voltage as same color all sub-pixels 321 in the default input voltage
Under target display brightness；
Target input voltage determining module 230 be used for according to each sub-pixel 321 to actually enter voltage bright with actual displayed
The corresponding relationship of degree determines target input voltage of each sub-pixel 321 when showing the target display brightness；
Voltage compensation value determining module 240 be used for by the target input voltage of each sub-pixel 321 with it is described preset it is defeated
Enter the difference of voltage as voltage compensation value, to feed back to the 320 row voltage compensation of OLED display panel.
Optionally, OLED display panel 320 is used to obtaining and storing the voltage compensation value, and according to the voltage compensation
Value carries out voltage compensation to each sub-pixel 321.
It is mended specifically, voltage of each sub-pixel 321 under each default input voltage is calculated in data processing equipment 310
Value is repaid, the voltage compensation value is fed back into OLED display panel 320.OLED display panel 320 in corresponding memory module or
The voltage compensation value is stored in storage chip, OLED display panel 320, can be according to son each in image when image is shown
The luma data or brightness data of pixel 321 search corresponding electronic compensating value, and according to the voltage compensation value to each sub- picture
Element 321 carries out voltage compensation, to improve the brightness irregularities of each sub-pixel 321, improves image displaying quality.
Fig. 3 is the structural schematic diagram of the brightness control system of another OLED display panel provided in an embodiment of the present invention,
With reference to Fig. 3, the system also includes: optical pickup 330.
Optical pickup 330 is used to obtain OLED display panel 320 and is inputting the display image actually entered under voltage,
And the display image is sent to data processing equipment 310.
Optionally, optical pickup 330 can be CCD camera.
Optionally, corresponding relationship computing module 310 is specifically used for:
The OLED display panel 320 obtained according to optical pickup 330 actually enters the display figure under voltage in input
As obtaining actual displayed brightness of each sub-pixel 321 of OLED display panel 320 in the case where actually entering voltage.
Optionally, OLED display panel 320 can be applied to wrist-watch, mobile phone, TV or Industry Control, Medical Devices it is aobvious
Show system.
The brightness control system of OLED display panel provided in this embodiment, and it is provided by any embodiment of the invention
The brightness adjusting method of OLED display panel belongs to same inventive concept, has corresponding beneficial effect.Not in the present embodiment
The technical detail of detailed description, reference can be made to the brightness adjusting method for the OLED display panel that any embodiment of that present invention provides.
Fig. 4 is actual displayed brightness curve and the signal of target display brightness curve of sub-pixel provided in an embodiment of the present invention
Figure.It is sent specifically, OLED display panel 320 is actually entered the display image under voltage in input by optical pickup 330
After data processing equipment 310, the corresponding relationship computing module 210 of data processing equipment 310 is obtained from the display image
Actual displayed brightness of each sub-pixel 321 of OLED display panel 320 in the case where actually entering voltage, and calculate each sub-pixel 321
The corresponding relationship for actually entering voltage Yu actual displayed brightness, obtain actual displayed brightness curve shown in dotted lines in Figure 4.It needs
It is noted that merely exemplary in Fig. 4 show the actual displayed brightness curve an of sub-pixel 321, in fact, corresponding close
It is the actual displayed brightness curve that each sub-pixel 321 has been calculated in computing module 210.Target display brightness obtains module
220 obtain target display brightness of each sub-pixel 321 of OLED display panel 320 under default input voltage, obtain real in Fig. 4
Target display brightness curve shown in line.Target input voltage determining module 230 is according to the actual displayed of each sub-pixel 321
Brightness curve and target display brightness curve determine target input electricity of each sub-pixel 321 in displaying target display brightness
Pressure.Voltage compensation value determining module 240 is by the difference of the target input voltage of each sub-pixel 321 and the default input voltage
Value is used as voltage compensation value, carries out voltage compensation to feed back to the OLED display panel 320.
Illustratively, with reference to Fig. 4, if the default input voltage is 3.66V, the target display brightness is 300nit,
Actual displayed brightness of a certain sub-pixel when inputting 3.66V is 280nit.Target input voltage determining module 230 is according to the son
The available sub-pixel of the actual displayed brightness curve of pixel needs to input in displaying target display brightness 300nit
3.63V, i.e. target input voltage are 3.63V.The sub-pixel is calculated in default input electricity in voltage compensation value determining module 240
Voltage compensation value when pressure is -0.03V, can similarly obtain the voltage compensation value of all sub-pixels, to carry out electricity to each sub-pixel
Pressure compensation, to eliminate the non-uniform light between each pixel.
It should be noted that the actual displayed brightness curve for showing sub-pixel and target that the present embodiment is merely exemplary
Display brightness curve, not limitation of the invention.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (6)
1. a kind of brightness adjusting method of OLED display panel characterized by comprising
Actual displayed brightness of each sub-pixel of OLED display panel in the case where actually entering voltage is obtained, and calculates each sub-pixel
Actually enter the corresponding relationship of voltage Yu actual displayed brightness；
The mean value of display brightness of all sub-pixels of OLED display panel same color when inputting default input voltage is made
For target display brightness of all sub-pixels under the default input voltage of the same color；
Determine that each sub-pixel is being shown according to the corresponding relationship for actually entering voltage and actual displayed brightness of each sub-pixel
Target input voltage when the target display brightness；
Using the target input voltage of each sub-pixel and the difference of the default input voltage as voltage compensation value, with feedback
Voltage compensation is carried out to the OLED display panel.
2. the method according to claim 1, wherein each sub-pixel for obtaining OLED display panel is actually entering
Actual displayed brightness under voltage includes:
The OLED display panel obtained according to optical pickup actually enters the display image under voltage in input and obtains
Actual displayed brightness of each sub-pixel of the OLED display panel in the case where actually entering voltage.
3. a kind of brightness control system of OLED display panel, including data processing equipment and OLED display panel, feature exist
In the data processing equipment includes:
Corresponding relationship computing module, for obtaining actual displayed of each sub-pixel of OLED display panel in the case where actually entering voltage
Brightness, and calculate the corresponding relationship for actually entering voltage Yu actual displayed brightness of each sub-pixel；
Target display brightness obtains module, for all sub-pixels of OLED display panel same color to be preset input in input
All sub-pixels target under the default input voltage of the mean value of display brightness when voltage as the same color
Display brightness；
Target input voltage determining module, for pair for actually entering voltage Yu actual displayed brightness according to each sub-pixel
It should be related to the target input voltage for determining each sub-pixel when showing the target display brightness；
Voltage compensation value determining module, for by the difference of the target input voltage of each sub-pixel and the default input voltage
Value is used as voltage compensation value, carries out voltage compensation to feed back to the OLED display panel.
4. brightness control system according to claim 3, which is characterized in that the OLED display panel is for obtaining and depositing
The voltage compensation value is stored up, and voltage compensation is carried out to each sub-pixel according to the voltage compensation value.
5. brightness control system according to claim 3, which is characterized in that further include:
Optical pickup, the optical pickup is for obtaining the OLED display panel in the case where input actually enters voltage
Display image, and the display image is sent to the data processing equipment.
6. brightness control system according to claim 5, which is characterized in that the corresponding relationship computing module is specifically used
In:
The OLED display panel obtained according to optical pickup actually enters the display image under voltage in input and obtains
Actual displayed brightness of each sub-pixel of the OLED display panel in the case where actually entering voltage.
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| CN108376532B (en) * | 2018-03-19 | 2020-07-31 | 京东方科技集团股份有限公司 | Brightness compensation method and device of display device |
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| CN105280139A (en) * | 2015-11-11 | 2016-01-27 | 深圳市华星光电技术有限公司 | AMOLED brightness compensation method and AMOLED driving system |
| CN105761672A (en) * | 2016-04-25 | 2016-07-13 | 广东欧珀移动通信有限公司 | Method and apparatus for adjusting drive voltage and terminal |
| CN106128358A (en) * | 2016-08-31 | 2016-11-16 | 京东方科技集团股份有限公司 | The driving method of display floater, the drive system of display floater and display device thereof |
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Effective date of registration: 20211101 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |