CN107195270A - The luminance compensation method and device of display panel - Google Patents
The luminance compensation method and device of display panel Download PDFInfo
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- CN107195270A CN107195270A CN201710632526.5A CN201710632526A CN107195270A CN 107195270 A CN107195270 A CN 107195270A CN 201710632526 A CN201710632526 A CN 201710632526A CN 107195270 A CN107195270 A CN 107195270A
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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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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention provides a kind of luminance compensation method and device of display panel, belongs to display technology field.The luminance compensation method of the display panel of the present invention, including：Take the display panel after several Gamma stations, the brightness value of each test point in the display panel after each Gamma stations of detection；According to the brightness value of each test point detected, the brightness value and the functional relation of its position of the display panel after each Gamma stations of acquisition；According to the brightness value of the display panel after acquired each Gamma stations and the functional relation of its position, the optimal function relation of selection is used as canonical function relation；According to the canonical function relation, the data voltage that the display panel that will carry out Gamma stations is inputted is adjusted, so that display panel meets canonical function relation in the brightness value of Gamma stations, so as to improve the brightness homogeneity of display panel.
Description
Technical field
The invention belongs to display technology field, and in particular to the luminance compensation method and device of a kind of display panel.
Background technology
Under current technological process, organic electroluminescent LED (Organic Light Emitting Diode,
OLED) on display device Existential Space and temporal non-uniformity problem, and it is big with the change of display device size, it is such
It is more obvious that problem exposes, therefore solves the display inhomogeneities of large scale OLED display device as indispensable in volume production
One of key technology.Display inhomogeneities and the manufacture craft of OLED display device are closely related, the threshold on whole panel
When the value of threshold voltage has larger difference, the overall brightness uniformity of display device is deteriorated；Meanwhile, the organic material used is at it
The problem of being continually changing during the life-span of itself there is also brightness.This all prevents only by technologic improvement from being fully solved
Problems, can only be solved by various compensatory drivings.
In the prior art, generally built in pixel inner utilization thin film transistor (TFT) (Thin Film Transistor, TFT)
Sub-circuit brightness is compensated；The dot structure and type of drive of this kind of mode are all more complicated, and compensation effect is only limitted to
TFT threshold voltages and line drop, can not solve image retention problem；Simultaneously in the aobvious of large scale high-resolution and high refreshing frequency
Show in application, the problem of this kind of compensation way can cause aperture opening ratio reduction, actuating speed is slow.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art, there is provided one kind raising display panel is bright
Spend the luminance compensation method and device of the display panel of homogeneity.
The technical scheme that solution present invention problem is used is a kind of luminance compensation method of display panel, its feature
It is, including：
The display panel after several Gamma stations is taken, in the display panel after each Gamma stations of detection
The brightness value of each test point；
According to the brightness value of each test point detected, display panel after each Gamma stations is obtained
Brightness value and the functional relation of its position；
Closed according to the brightness value of the display panel after acquired each Gamma stations and the function of its position
System, the optimal function relation of selection is used as canonical function relation；
According to the canonical function relation, the data voltage that the display panel that will carry out Gamma stations is inputted is entered
Row adjustment, so that display panel meets canonical function relation in the brightness value of Gamma stations.
Preferably, the display panel is divided into multiple viewing areas；
The brightness value according to each test point detected, obtains the display surface after each Gamma stations
The brightness value of plate and the functional relation of its position；According to the bright of the display panel after acquired each Gamma stations
Angle value and the functional relation of its position, choose a step of optimal function relation is as canonical function relation, specifically include：
According to the brightness value of each test point detected, display panel after each Gamma stations is obtained
The brightness value and the functional relation of its position of each viewing area；
According to the brightness value of each viewing area of the display panel after acquired each Gamma stations and its position
Functional relation, choose corresponding in display panel of the optimal function relation of each viewing area as pending Gamma stations
The optimal function relation of viewing area.
It may further be preferable that the brightness value according to each test point detected, obtains each Gamma works
The brightness value of each viewing area of display panel after position is Y=aX+b with the functional relation of its position；Wherein, Y is described
The brightness value of test point；X is the quantity of viewing area in display panel, X >=1；0 ＜ a≤1, b are constant；
The optimal function relation of each viewing area is Y=a ＇ X+b ＇；Wherein, a ＇ is after each Gamma stations
The average value of a in display panel in the functional relation of the viewing area of same position；B ＇ are the display after each Gamma stations
The average value of b in panel in the functional relation of the viewing area of same position.
The technical scheme that solution present invention problem is used is a kind of luminance compensating mechanism of display panel, including：
Detection unit, the brightness for each test point in the display panel after several Gamma stations to being taken
Value；
Computing unit, for the brightness value according to each test point detected, after each Gamma stations of acquisition
Display panel brightness value and its position functional relation；
Analytic unit, for the brightness value according to the display panel after acquired each Gamma stations and its
The functional relation of position, the optimal function relation of selection is used as canonical function relation；
Adjustment unit, for according to the canonical function relation, being inputted to the display panel that will carry out Gamma stations
Data voltage be adjusted so that display panel meets canonical function relation in the brightness value of Gamma stations.
Preferably, the display panel is divided into multiple viewing areas；
The computing unit, specifically for the brightness value according to each test point detected, obtains each Gamma
The brightness value of each viewing area of display panel after station and the functional relation of its position；
The analytic unit, specifically for according to each of the display panel after acquired each Gamma stations
The brightness value of viewing area and the functional relation of its position, the optimal function relation for choosing each viewing area are used as pending Gamma
The optimal function relation of corresponding viewing area in the display panel of station.
It may further be preferable that the brightness value according to each test point detected, obtains each Gamma works
The brightness value of each viewing area of display panel after position is Y=aX+b with the functional relation of its position；Wherein, Y is described
The brightness value of test point；X is the quantity of viewing area in display panel, X >=1；0 ＜ a≤1, b are constant；
The optimal function relation of each viewing area is Y=a ＇ X+b ＇；Wherein, a ＇ is after each Gamma stations
The average value of a in display panel in the functional relation of the viewing area of same position；B ＇ are the display after each Gamma stations
The average value of b in panel in the functional relation of the viewing area of same position.
The technical scheme that solution present invention problem is used is a kind of display panel, and it includes above-mentioned brightness regulation
Device.
The technical scheme that solution present invention problem is used is a kind of display device, and it includes above-mentioned display surface
Plate.
The present invention has the advantages that：
The brightness adjusting method of the display panel of the present invention, according to the display surface after acquired each Gamma stations
The brightness value of plate and the functional relation of its position, choose an optimal function relation as canonical function relation, according to the standard
Functional relation, is adjusted to the data voltage that the display panel that will carry out Gamma stations is inputted, so that display panel exists
The brightness value of Gamma stations meets canonical function relation, so as to improve the brightness homogeneity of display panel.
Brief description of the drawings
Fig. 1 is the flow chart of the luminance compensation method of the display panel of embodiments of the invention 1；
Fig. 2 is the schematic diagram of the luminance compensating mechanism of the display panel of embodiments of the invention 1.
Embodiment
To make those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail to the present invention.
Embodiment 1：
As shown in figure 1, the present embodiment provides a kind of luminance compensation method of display panel, comprise the following steps：
Step 1: the display panel after several Gamma stations is taken, it is aobvious after each Gamma stations of detection
Show the brightness value of the test point of each in panel.
Specifically, after a certain batch display panel output, taking wherein several products after Gamma stations, to pass through
Optical probe carries out luminance test to display panel, wherein in luminance test, preferably display panel is subjected to pure color
It has been shown that, for example：Red picture, green picture, the display of blue picture, choose a number of test point, to the position of test point
Put and recorded with brightness value.
At this it should be noted that so-called test point in the present embodiment, can refer to a certain pixel in display panel,
It may also be the one piece of region for referring to and being made up of multiple pixels.
Step 2: according to the brightness value of each test point detected, obtaining the display after each Gamma stations
The brightness value of panel and the functional relation of its position.
Specifically, the problem of due to there is IR Drop in display panel, therefore one close to signal input part can be caused
The brightness of the pixel of side is more than the brightness away from signal input part side, so that according to selected test point brightness value and position
Put, it may be determined that go out the functional relation of the two.
Wherein, in order to which the display panel produced behind accurately position is compensated, it is preferred that display panel is divided into
Multiple viewing areas, according to the brightness of test point and position, obtain brightness value and the position of each viewing area in each display panel
The functional relation put.
Wherein, in each viewing area brightness value and the relation of position can be indicated with Y=aX+b；Wherein, Y is
The brightness value of the test point；X is the quantity of viewing area in display panel, X >=1；0 ＜ a≤1, b are constant.
Step 3: according to the brightness value of the display panel after acquired each Gamma stations and the function of its position
Relation, the optimal function relation of selection is used as canonical function relation.
Specifically, corresponding with step 2, display panel is divided into multiple viewing areas, according to the brightness of test point and position
Put, the brightness value and the functional relation of position of each viewing area in each display panel of acquisition, if in each viewing area
The relation of brightness value and position can use Y=aX+b, and the optimal function relation of each viewing area is Y=a ＇ X+b ＇；Wherein, a ＇
For the average value of a in the functional relation of the viewing area of same position in the display panel after each Gamma stations；B ＇ are every
The average value of b in display panel after individual Gamma stations in the functional relation of the viewing area of same position.
Certainly, in this step can also by the brightness value of the display panel after acquired each Gamma stations with
The functional relation of its position, with that according to the functional relation prestored one can be selected closest to be closed as optimal function
System, namely canonical function relation.
Step 4: according to the canonical function relation, to the data that the display panel of Gamma stations is inputted will be carried out
Voltage is adjusted, so that display panel meets canonical function relation in the brightness value of Gamma stations.
Specifically, to the display panel of Gamma stations will be carried out with a batch of, now, being carried out to display panel
Image data writes, and Gamma signals are converted to data voltage signal afterwards, now according to standard letter acquired in step 3
Number, is adjusted to data voltage, and the data voltage after most adjusting at last is exported.Wherein it is possible to will be close to signal input
The data voltage reduction of the pixel at end, the data voltage for the pixel that principle signal is inputted is heightened, so that the display of display panel
Brightness is homogeneous.
Embodiment 2：
As shown in Fig. 2 the present embodiment provides a kind of brightness regulating apparatus of display panel, it can be used in embodiment 1
Brightness regulation.Brightness regulating apparatus in specific the present embodiment, including：Detection unit, computing unit, analytic unit, adjustment are single
Member.
Specifically, detection unit is for each test point in the display panel after several Gamma stations to being taken
Brightness value.
Computing unit is used for after the brightness value according to each test point detected, each Gamma stations of acquisition
Display panel brightness value and its position functional relation.
The computing unit obtains each Gamma works specifically for the brightness value according to each test point detected
The brightness value of each viewing area of display panel after position and the functional relation of its position；
Analytic unit, for the brightness value according to the display panel after acquired each Gamma stations and its
The functional relation of position, the optimal function relation of selection is used as canonical function relation.
Analytic unit, specifically for each display according to the display panel after acquired each Gamma stations
The brightness value in area and the functional relation of its position, the optimal function relation for choosing each viewing area are used as pending Gamma stations
Display panel in corresponding viewing area optimal function relation.
Adjustment unit, for according to the canonical function relation, being inputted to the display panel that will carry out Gamma stations
Data voltage be adjusted so that display panel meets canonical function relation in the brightness value of Gamma stations.
Wherein, in order to which the display panel produced behind accurately position is compensated, it is preferred that display panel is divided into
Multiple viewing areas, according to the brightness of test point and position, obtain brightness value and the position of each viewing area in each display panel
The functional relation put.The relation of brightness value and position in each viewing area can be indicated with Y=aX+b；Wherein, Y is
The brightness value of the test point；X is the quantity of viewing area in display panel, X >=1；0 ＜ a≤1, b are constant.Each viewing area
Optimal function relation be Y=a ＇ X+b ＇；Wherein, a ＇ are the aobvious of same position in the display panel after each Gamma stations
Show the average value of a in the functional relation in area；B ＇ be each Gamma stations after display panel in same position viewing area
Functional relation in b average value.
Specifically, to the display panel of Gamma stations will be carried out with a batch of, now, being carried out to display panel
Image data writes, and Gamma signals are converted to data voltage signal afterwards, now according to standard letter acquired in step 3
Number, is adjusted to data voltage, and the data voltage after most adjusting at last is exported.Wherein it is possible to will be close to signal input
The data voltage reduction of the pixel at end, the data voltage for the pixel that principle signal is inputted is heightened, so that the display of display panel
Brightness is homogeneous.
Accordingly, a kind of display panel and display device are also provided in the present embodiment.Due to, including above-mentioned brightness regulation
Device, therefore display brightness is more homogeneous.
Wherein, wherein, display device can be liquid crystal display device or el display device, such as liquid crystal surface
Plate, Electronic Paper, oled panel, mobile phone, tablet personal computer, television set, display, notebook computer, DPF, navigator etc. are appointed
What has the product or part of display function.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (8)
1. a kind of luminance compensation method of display panel, it is characterised in that including：
Take the display panel after several Gamma stations, each in the display panel after each Gamma stations of detection
The brightness value of test point；
According to the brightness value of each test point detected, the brightness of the display panel after each Gamma stations of acquisition
Value and the functional relation of its position；
According to the brightness value of the display panel after acquired each Gamma stations and the functional relation of its position, choosing
An optimal function relation is taken as canonical function relation；
According to the canonical function relation, the data voltage that the display panel that will carry out Gamma stations is inputted is adjusted
It is whole, so that display panel meets canonical function relation in the brightness value of Gamma stations.
2. the luminance compensation method of display panel according to claim 1, it is characterised in that the display panel is divided into
Multiple viewing areas；
The brightness value according to each test point detected, obtains display panel after each Gamma stations
Brightness value and the functional relation of its position；According to the brightness value of the display panel after acquired each Gamma stations
With the functional relation of its position, a step of optimal function relation is as canonical function relation is chosen, is specifically included：
According to the brightness value of each test point detected, each of display panel after each Gamma stations is obtained
The brightness value of viewing area and the functional relation of its position；
According to the brightness value and the letter of its position of each viewing area of the display panel after acquired each Gamma stations
Number relation, chooses corresponding display in display panel of the optimal function relation of each viewing area as pending Gamma stations
The optimal function relation in area.
3. the luminance compensation method of display panel according to claim 2, it is characterised in that described each according to what is detected
The brightness value of individual test point, obtain each viewing area of display panel after each Gamma stations brightness value and its
The functional relation of position is Y=aX+b；Wherein, Y is the brightness value of the test point；X is the quantity of viewing area in display panel,
X≥1；0 ＜ a≤1, b are constant；
The optimal function relation of each viewing area is Y=a ＇ X+b ＇；Wherein, a ＇ are the display after each Gamma stations
The average value of a in panel in the functional relation of the viewing area of same position；B ＇ are the display panel after each Gamma stations
The average value of b in the functional relation of the viewing area of middle same position.
4. a kind of brightness regulating apparatus of display panel, it is characterised in that including：
Detection unit, the brightness value for each test point in the display panel after several Gamma stations to being taken；
Computing unit, it is aobvious after each Gamma stations of acquisition for the brightness value according to each test point detected
Show the brightness value of panel and the functional relation of its position；
Analytic unit, for the brightness value according to the display panel after acquired each Gamma stations and its position
Functional relation, choose an optimal function relation be used as canonical function relation；
Adjustment unit, for according to the canonical function relation, to the number that the display panel of Gamma stations is inputted will be carried out
It is adjusted according to voltage, so that display panel meets canonical function relation in the brightness value of Gamma stations.
5. brightness regulating apparatus according to claim 4, it is characterised in that the display panel is divided into multiple displays
Area；
The computing unit, specifically for the brightness value according to each test point detected, obtains each Gamma stations
The brightness value of each viewing area of display panel afterwards and the functional relation of its position；
The analytic unit, specifically for each display according to the display panel after acquired each Gamma stations
The brightness value in area and the functional relation of its position, the optimal function relation for choosing each viewing area are used as pending Gamma stations
Display panel in corresponding viewing area optimal function relation.
6. brightness regulating apparatus according to claim 5, it is characterised in that described according to each test point detected
The brightness value and the function of its position of each viewing area of display panel after brightness value, each Gamma stations of acquisition
Relation is Y=aX+b；Wherein, Y is the brightness value of the test point；X is the quantity of viewing area in display panel, X >=1；0 ＜ a
≤ 1, b are constant；
The optimal function relation of each viewing area is Y=a ＇ X+b ＇；Wherein, a ＇ are the display after each Gamma stations
The average value of a in panel in the functional relation of the viewing area of same position；B ＇ are the display panel after each Gamma stations
The average value of b in the functional relation of the viewing area of middle same position.
7. a kind of display panel, it is characterised in that including the brightness regulating apparatus any one of claim 1-3.
8. a kind of display device, it is characterised in that including the display panel described in claim 7.
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