CN106847173B - A kind of OLED mould group gamma curve adjusting method and device - Google Patents
A kind of OLED mould group gamma curve adjusting method and device Download PDFInfo
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- CN106847173B CN106847173B CN201710043020.0A CN201710043020A CN106847173B CN 106847173 B CN106847173 B CN 106847173B CN 201710043020 A CN201710043020 A CN 201710043020A CN 106847173 B CN106847173 B CN 106847173B
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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
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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Abstract
The invention discloses the adjusting methods and device of a kind of OLED mould group gamma curve, this method comprises: S1) the OLED mould group for not pasting polaroid is provided；The register value or/and the OLED mould group that each target ties up the target brightness value Lv selected when the OLED mould group S2) not being pasted the polaroid register value that each target ties up target color coordinates value X, Y a little when not pasting polaroid are written in the OLED mould group.The present invention carries out brightness and color temperature adjustment to OLED mould group before pasting polaroid, so that the OLED mould group finished product after patch polaroid lights the display effect for presenting and being best suitable for human eye vision curve and specific colour temperature, the Material Cost of the effectively save polaroid of energy and the process costs for pasting polaroid, and promote the Gamma adjustment efficiency of OLED mould group producing line.
Description
Technical field
The invention belongs to OLED mould group GAMMA Calibration Technology field, more particularly to one kind before pasting polaroid to OLED mould
Group carries out the method and device of brightness and color temperature adjustment, is best suitable for so that the OLED mould group finished product after patch polaroid is lighted to present
The display effect of human eye vision curve and specific colour temperature.
Background technique
OLED is considered as the maximum novel flat-plate display technology of the development potentiality after LCD, PDP.China is as whole world electricity
Sub- product manufacturing big country and consumption big country, are also seen as the maximum OLED application market in the whole world at present.As consumer electronics produce
Product terminal requirements are continuously increased, and market will increase oled panel demand rapidly.Development and state with OLED the relevant technologies
It is inside and outside in the increase for building production capacity, the market of OLED product expands rapidly, and OLED is widely used, including TV, smart phone, intelligence
Can wearing, VR, automobile show, car lighting lamp etc..Smart phone field OLED permeability 15% at present, intelligence are dressed, intelligence
Bracelet, smartwatch almost all in middle and high end uses AMOLED display screen at present.OLED have self-luminous, it is clear it is beautiful, frivolous,
The features such as fast response time, visual angle be wide, low-power consumption, Applicable temperature range big, at low cost, manufacturing process is simple.In addition, OLED makees
For planar light source, either in terms of in structure or in source mass all there is traditional LED illumination can not look forward to
And advantage.
Instinctively, we will be considered that the expression of light and shade should equally spacedly correspond to corresponding brightness, actually human eye to compared with
The sensitivity ratio of brightness is high in bright environment under dark environment, research find human eye feeling approximation direct ratio and
(1/ γ) power of brightness, this human eye feel that the relation curve between brightness is known as γ (gamma) curve.In order to preferably
So that OLED module displays effect more meets human eye vision curve, it is necessary to do gamma (Gamma) correction to mould group.Colour temperature is people
Eye is embodied in color characteristics shown by OLED product to the feeling of illuminator or white reflection body.Standard blackbody is heated, temperature
The black matrix color starts dark red-pale red-orange yellow-white-indigo plant and gradually changes when degree increases to a certain extent.Being typically chosen colour temperature is
White field of the reference white of 6500K or 9300K as mould group, chromaticity coordinate corresponding to 6500K are x=0.312, y=0.329.
In order to enable unified colour temperature is presented in the white field of OLED mould group, a progress color temperature adjustment need to be respectively tied up to the IC of mould group binding.
OLED mould group uses the light emitting diode that can send out colourama, does not need backlight and does not also need colorized optical filtering
Piece, for colour display, OLED structure is simply many with respect to LCD, has always been considered as being perfect display.But OLED
Display is easy reflective in the case where extraneous strong illumination but because of the structure of metal electrode, causes dark-state secretly equal interference.
To solve interference problem caused by extraneous strong illumination, Mo Zu manufacturer is usually on the surface of OLED mould group along with can anti-ring at present
The rotatory polarization piece of border light reflection.
Due to polaroid the brightness of OLED mould group and chromaticity coordinates are influenced it is very big, to solve this technical problem, mould group at present
Manufacturer usually carries out Gamma correction after OLED mould group has pasted polaroid, and having corrected can reach standard, but if correction
Failure, entire OLED mould group will scrap, and the materials such as polaroid can not recycle, and cause Material Cost and time cost
Waste.
Summary of the invention
In view of the above shortcomings of the prior art, the present invention discloses a kind of OLED mould group gamma curve adjusting method and device,
Brightness and color temperature adjustment are carried out to OLED mould group before pasting polaroid, so that the OLED mould group finished product after patch polaroid is lighted and is in
It is now best suitable for the display effect of human eye vision curve and specific colour temperature, while filtering out regulating effect when doing gamma adjusting
OLED mould group not up to standard, the Material Cost of the effectively save polaroid of energy and the process costs for pasting polaroid, and promote OLED
The Gamma adjustment efficiency of mould group producing line.
In order to solve the above technical problems, the present invention provides a kind of adjusting method of OLED mould group gamma curve, the adjusting side
Method the following steps are included:
S1) the OLED mould group for not pasting polaroid is provided；
Each target is tied up the register value of target brightness value Lv a little or/and is somebody's turn to do when the OLED mould group S2) not being pasted polaroid
The OLED mould group register value that each target ties up target color coordinates value X, Y a little when not pasting polaroid is written in the OLED mould group.
Further, the target brightness value of any high gray when above-mentioned technical proposal does not paste polaroid according to the OLED mould group
The Lv1 and target brightness value Lv2 of any low ash rank obtains each target and ties up target brightness value Lv a little, wherein the high ash
The value range of rank is 200~255, and the value range of the low ash rank is 0~20.
Further, target brightness value Lv1 and target brightness value Lv2 are updated to target and tied up a little by above-mentioned technical proposal
Brightness value calculation formula obtains each target and ties up target brightness value Lv a little, wherein the target tie up a brightness value calculate it is public
Formula are as follows:
Lv=(target ties up grayscale value where a grayscale value/Lv1)Gamma index*(Lv1-Lv2)+Lv2。
Further, above-mentioned technical proposal obtain target brightness value Lv1 method the following steps are included:
S20 the target brightness value Lv0 and the polarisation of any high gray when the OLED mould group pastes the polaroid) are obtained
The brightness polarizing coefficient K of pieceLv；By target brightness value Lv0 divided by brightness polarizing coefficient KLvObtain target brightness value Lv1.
Further, the target brightness value Lv2 of any low ash rank of this in above-mentioned technical proposal is preset value, or to be somebody's turn to do
The brightness value of any low ash rank when OLED mould group does not paste polaroid.
Further, step S20 described in above-mentioned technical proposal the following steps are included:
Gamma curve when S201) pasting the polaroid to the OLED mould group carries out adjustment, records any high ash after adjustment
The brightness value L v3 of rank；
S202 the brightness value L v4 of any high gray when the OLED mould group does not paste the polaroid) is recorded；
S203 brightness value L v3) is obtained into brightness polarizing coefficient K divided by brightness value L v4Lv。
Further, the adjusting method is further comprising the steps of in above-mentioned technical proposal:
S21 target color coordinates value X0, Y0 and the polarisation that the OLED mould group pastes any grayscale when the polaroid) are obtained
The chromaticity coordinates polarizing coefficient K of pieceX、KY；
S22) by target color coordinates value X0, Y0 respectively divided by chromaticity coordinates polarizing coefficient KX、KY, obtain the OLED mould group not
Target color coordinates value X, Y of any grayscale when pasting polaroid.
Further, step S21 described in above-mentioned technical proposal the following steps are included:
Gamma curve when S211) pasting the polaroid to the OLED mould group carries out adjustment, records any grayscale after adjustment
Chromaticity coordinates value X1, Y1；
S212 chromaticity coordinates value X2, Y2 of any grayscale when the OLED mould group does not paste polaroid) is recorded；
S213 the chromaticity coordinates that chromaticity coordinates value X1, Y1) is obtained any grayscale divided by chromaticity coordinates value X2, Y2 respectively is inclined
Light rate KX、KY。
Further, above-mentioned technical proposal is further comprising the steps of:
Coordinate value Xm, Ym of the same colour are provided, each target is obtained and ties up chromaticity coordinates a little, each target is tied up a little
R, G register value is adjusted, and chromaticity coordinates value X, Y for tying up each target a little is all fallen in the error range of Xm, Ym.
Further, in above-mentioned technical proposal when it is 11~254 that the target, which ties up grayscale value a little, then the target is tied up a little
Chromaticity coordinates Xm choosing value range be 0.307~0.317, the choosing value range of Ym is 0.324~0.334；
When it is 0~10 that the target, which ties up grayscale value a little, then it is 0.262 that the target, which ties up the choosing value range of chromaticity coordinates Xm a little,
~0.362, the choosing value range of Ym is 0.279~0.379.
Further, above-mentioned technical proposal is further comprising the steps of:
It obtains each target and ties up brightness value a little, R, G a little is tied up to each target, B-register value is adjusted
Section, the brightness value L v5 for tying up each target a little are all fallen in the error range of target brightness value Lv.
Further, above-mentioned technical proposal is further comprising the steps of:
The each target of readback ties up present intensity value Lv6 and current color coordinate value X3, Y3 a little, and according to reading back result
It ties up and to adjust until the present intensity value Lv7 that each target is tied up a little is all fallen in the error range of target brightness value Lv,
Each target is tied up current color coordinate value X4, Y4 a little and is all fallen in the error range of target color coordinates value X, Y.
Further, above-mentioned technical proposal is further comprising the steps of: after completing gamma curve adjusting, in the OLED mould
Polaroid is pasted in group.
The present invention also provides a kind of OLED mould group gamma curve regulating devices, including for providing the upper of configuration parameter
Machine, the optics for providing the picture signal generator of image drive signals, and for acquiring brightness and chromaticity coordinates data are surveyed
Instrument is tried, which further includes controller；Wherein
The OLED mould group gamma curve adjusting method obtains the OLED mould group to the controller according to the above technical scheme
Each target ties up the target brightness value Lv selected when not pasting polaroid or/and when OLED mould group does not paste polaroid each target ties up mesh a little
Mark chromaticity coordinates value X, Y；
The picture signal generator is also used to the register value or/and each mesh of each target brightness value Lv
The register value of mark chromaticity coordinates value X, Y is written in the OLED mould group.
The invention has the following advantages that
1) present invention does Gamma adjusting before OLED mould group pastes polaroid, can be in advance by Gamma dysregulation
OLED mould group screens, to save the Material Cost of polaroid and paste the process costs of polaroid；
2) present invention can greatly promote the Gamma adjustment efficiency of OLED mould group producing line, pass through posting for a standard
The OLED mould group of polaroid determines the OLED mould group and does not paste when polaroid after the register value of corresponding gamma curve, can be with
Directly the register value of the gamma curve is burnt to the OLED mould group in the OLED mould group of batch, so as to avoid
Each mould group requires individually to carry out Gamma adjustment in OLED mould group producing line；
3) present invention can promote the accuracy of OLED mould group Gamma adjusting, since there are polarizing coefficients for polaroid, in OLED
Mould group obtains directly carrying out Gamma adjustment after multiple groups polarizing coefficient is averaged in the case where not pasting polaroid, compares and is posting partially
Gamma adjustment is carried out on the OLED mould group finished product of mating plate, can effectively reduce the error of brightness value and chromaticity coordinates value.
Detailed description of the invention
Fig. 1 OLED mould group gamma curve adjusting method flow chart of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
The present invention carries out the final purpose of brightness and color temperature adjustment before pasting polaroid to OLED mould group, is to adjust out to post
The display effect for being best suitable for human eye vision curve and specific colour temperature is presented in the OLED mould group finished product of polaroid, it is therefore necessary to be with patch
The brightness that human eye vision curve and specific colour temperature display effect are best suitable for after polaroid and colour temperature (i.e. chromaticity coordinates) are come as standard
Calculate object brightness and chromaticity coordinates of the OLED mould group when not pasting polaroid.
The present embodiment is with the OLED mould group (i.e. 256 grades of gray scales) of 8 processing systems, high gray value 255, low ash rank value
It is illustrated for 0.
As shown in Figure 1, the present embodiment is the OLED mould group Gamma tune of WD5EA5F01 with Readboy-FHD, chip type
For section, the OLED mould group support 7 groups of luminance standards, i.e. 7 groups of Gamma standards, the OLED mould group Gamma adjust the step of are as follows:
1) OLED mould group is first sticked into polaroid, the target according to the 255th grayscale of OLED mould group under 7 groups of Gamma standards is bright
The 255th after angle value Lv0 and target color coordinates value X0, Y0 carry out Gamma adjustment to the OLED mould group respectively, and record is adjusted respectively
The brightness value and chromaticity coordinates value of grayscale, obtain the brightness value L v3 and chromaticity coordinates value X1, Y1 of 7 group of the 255th grayscale；
2) polaroid torn in the OLED mould group, in the same position of acquisition brightness value L v3 and chromaticity coordinates value X1, Y1
The brightness value and chromaticity coordinates value for acquiring 7 groups of the 255th grayscale of Gamma standard respectively, obtain the brightness value L v4 of 7 group of the 255th grayscale
With chromaticity coordinates value X2, Y2；
3) with 7 groups of brightness value L v3 respectively divided by the substandard brightness value L v4 of same Gamma, 7 groups of Gamma marks are obtained
The brightness polarizing coefficient K of the lower polaroid of standardLv；It is sat respectively divided by the substandard color of same Gamma with 7 groups of chromaticity coordinates values X1, Y1
Scale value X2, Y2 obtain the chromaticity coordinates polarizing coefficient K of the polaroid under 7 groups of Gamma standardsX、KY；
4) with the target brightness value Lv0 of 7 group of the 255th grayscale respectively divided by the substandard brightness polarizing coefficient of same Gamma
KLv, obtain the target brightness value Lv1 of 7 groups of the 255th grayscale of Gamma standard when the OLED mould group does not paste polaroid；With this 7 group
Target color coordinates value X0, Y0 of 255 grayscale is respectively divided by the substandard chromaticity coordinates polarizing coefficient K of same GammaX、KY, it is somebody's turn to do
Target color coordinates value X, Y of 7 groups of the 255th grayscale of Gamma standard when OLED mould group does not paste polaroid；
5) according to the brightness value L v2 of the target brightness value Lv1 of the 255th grayscale and the 0th grayscale, (Lv2 is preset value, Huo Zhewei
The brightness value of OLED mould group the 0th grayscale when not pasting polaroid directly acquired), the OLED mould group is calculated and does not paste polarisation
All target brightness value Lv tied up a little of gamma curve when piece；According to target color coordinates value X, Y and other respectively tie up color a little
Setting coordinate value Xm, Ym obtains all chromaticity coordinates values tied up a little of gamma curve when the OLED mould group does not paste polaroid；
6) all brightness values tied up a little of the readback gamma curve and chromaticity coordinates value, and an adjusting is tied up according to reading back result
Until all brightness values tied up a little and chromaticity coordinates value are all fallen in the error range of target value, obtain that the gamma curve is all to tie up
The brightness end value of point and the register value of chromaticity coordinates end value；
7) the burning register value to in EEProm of the OLED mould group with the OLED mould group IC of batch so that patch polarisation
OLED mould group finished product after piece lights the display effect for presenting and being best suitable for human eye vision curve and specific colour temperature.
Realize that the device that OLED mould group gamma curve is adjusted includes: host computer, controller, image hair in above-described embodiment
Raw device and optical tester；Wherein, host computer is connect with controller, and controller is connect by RJ-45 interface with pictcure generator,
And controller is connect by serial ports with optical tester, pictcure generator is connect with OLED mould group to be measured, and optical tester is placed in
The top of OLED module group display screen to be measured.
In above-described embodiment, host computer is used to send optical tester configuration parameter and Gamma complete configuration to controller
Parameter；Optical tester is used to acquire the brightness value and chromaticity coordinates value of the OLED module displays according to the control instruction of controller；
Controller is used for the OLED acquired according to optical tester configuration parameter, Gamma complete configuration parameter and optical tester
Mould group pastes the brightness value and chromaticity coordinates value of the 255th grayscale before and after polaroid, obtains the mesh when OLED mould group does not paste polaroid
Brightness value and target color coordinates value and all brightness values tied up a little of gamma curve and chromaticity coordinates value are marked, and controls image
Device adjusts the register value in OLED mould group IC；Pictcure generator is used to drive the OLED module displays image frame, and
The register value in OLED mould group IC is adjusted according to the control instruction of controller and is burned onto the register value completed is adjusted
In the IC of the OLED mould group.
In above-described embodiment, controller is after the configuration parameter that host computer obtains optical tester, to optical tester
Configuration mainly includes the following steps:
1. device id: being arranged by the serial port in system configuration；
2. connection status: indicating whether optical tester connection succeeds, host computer interface shows OK/NG；
3. school zero: clicking button, equipment automatic zero adjustment, and reply result；
4. display pattern: the switching of optical tester operating mode；
5. main memory access: optical tester channel number；
6. connecting probe positions: the quantity of the connect probe of optical tester and position；
7. measuring probe selects: the probe of selection communication test；
8. measurement: clicking start button, measurement data is simultaneously shown.
In above-described embodiment, controller starts respectively after host computer acquisition Gamma complete configuration parameter according to this 7 groups
The brightness value and color of the 255th grayscale after Gamma standard carries out Gamma adjustment to the OLED mould group, and record is adjusted respectively are sat
Scale value obtains the brightness value L v3 and chromaticity coordinates value X1, Y1 of 7 group of the 255th grayscale, as shown in table 1.The Gamma adjustment of the step is
Gamma adjustment is carried out to the OLED mould group according to existing Gamma Calibration Technology scheme:
11) it according to the IC service manual of the OLED mould group, finds each of IC support of the OLED mould group and ties up point, register
Address, highest grayscale W255With minimum gray scale W0It is tied up a little for fixation, other, which are tied up, a little ties up a little for centre, is indicated with n, and n is 0~highest
Natural number within grayscale, if highest grayscale is 255, then n is any natural number in 0~255；Then according to existing Gamma tune
School technical solution carries out Gamma adjustment to the OLED mould group, obtains each target and ties up brightness value a little；
12) chromaticity coordinates setting value is inputted in host computer, pictcure generator can give the IC of the OLED according to the chromaticity coordinates value
Corresponding RGB register initial value is sent, the target is obtained and ties up chromaticity coordinates a little, R, G a little then are tied up to the target and posted
Storage value is adjusted, and the chromaticity coordinates for tying up the target a little is all fallen in error range；
13) it obtains the target and ties up brightness value a little, R, G a little is tied up to the target, B-register value is adjusted, make
The target is tied up brightness value a little and is fallen in the error range of brightness target value；
14) it obtains the target and ties up brightness value and chromaticity coordinates a little, R, G a little, the progress of B-register value are tied up to the target
It adjusts, the brightness value for tying up the target a little falls in the error range of brightness target value, and the target is made to tie up chromaticity coordinates a little
It falls in the error range of chromaticity coordinates target value.
Table 1
In above-described embodiment, the polaroid torn in the OLED mould group, acquisition brightness value L v3 and chromaticity coordinates value X1,
The same position of Y1 acquires the brightness value and chromaticity coordinates value of 7 groups of the 255th grayscale of Gamma standard respectively, obtains 7 group of the 255th ash
The brightness value L v4 and chromaticity coordinates value X2, Y2 of rank, as shown in table 2.
Table 2
In above-described embodiment, by 7 groups of brightness value L v3 respectively divided by the substandard brightness value L v4 of same Gamma, 7 groups are obtained
The brightness polarizing coefficient K of Gamma standardLv；By 7 groups of chromaticity coordinates values X1, Y1 respectively divided by the substandard chromaticity coordinates value of same Gamma
X2, Y2 obtain the chromaticity coordinates polarizing coefficient K of 7 groups of Gamma standardsX、KY, as shown in table 3.
Table 3
It, can be with the dynamic of above steps may be repeated multiple times 1-3 to obtain more accurate polarizing coefficient data in above-described embodiment
Make, obtains multiple brightness polarizing coefficient KLv, chromaticity coordinates polarizing coefficient KX, KY, and multiple brightness polarizing coefficient KLv, chromaticity coordinates is inclined
Light rate KX, KY is averaged.
In above-described embodiment, the target brightness value Lv0 of the 255th grayscale is divided by same when posting the polaroid with the OLED mould group
The substandard brightness polarizing coefficient KLv of one Gamma obtains the target brightness value of the 255th grayscale when the OLED mould group does not paste polaroid
Lv1；Target color coordinates value X0, Y0 of the 255th grayscale is marked divided by same Gamma respectively when posting the polaroid with the OLED mould group
Chromaticity coordinates polarizing coefficient K under quasi-X、KY, target color coordinates value X, Y of the 255th grayscale when the OLED mould group does not paste polaroid is obtained,
As shown in table 4.
Table 4
The register value that gamma curve when the OLED mould group does not paste polaroid is obtained in above-described embodiment, in step 5 includes
Following steps:
It Lv1 and Lv2 is updated to target ties up and select brightness value calculation formula and obtain each mesh when the OLED mould group does not paste polaroid
Mark ties up target brightness value Lv a little, wherein the target ties up a brightness value calculation formula are as follows:
Lv=(target ties up grayscale value where a grayscale value/Lv1)Gamma index*(Lv1-Lv2)+Lv2。
In above-described embodiment, the 255th grayscale of gamma curve is as maximum brightness benchmark, opponent-color coordinates precision in step 5
More demanding, chromaticity coordinates x range (± 0.003) between 0.315 and 0.309, chromaticity coordinates y range is between 0.332 and 0.326
(± 0.003), the chromaticity coordinates value of the 255th grayscale of gamma curve are the target color coordinates value that above-mentioned steps obtain；The Gamma
The chromaticity coordinates value of curve 11-254 grayscale is setting value, and nearby (± 0.005), chromaticity coordinates y is near 0.329 by chromaticity coordinates x0.312
(±0.005)；The chromaticity coordinates value of gamma curve 0-10 grayscale is setting value, near chromaticity coordinates x0.312 (± 0.050), color
Coordinate y (± 0.050) near 0.329.
It should be noted that the value range of high gray of the present invention is 200~255, the value range of low ash rank is 0~
20, it is consistent with above-described embodiment that each target ties up target brightness value a little, the calculation method of target color coordinates value.The present embodiment calculates
It respectively ties up the target that a brightness value uses and ties up a brightness value calculation formula for preferred calculation formula, as long as according to high gray in centre
Point target brightness value is respectively tied up all without departing from guarantor of the invention in the centre that target brightness value and low ash rank target brightness value are calculated
Protect range.
As it will be easily appreciated by one skilled in the art that the content that this specification is not described in detail belongs to this field professional technique
The prior art well known to personnel is not intended to limit the invention the above is merely preferred embodiments of the present invention, all in this hair
Made any modifications, equivalent replacements, and improvements etc., should be included in protection scope of the present invention within bright spirit and principle
Within.
Claims (14)
1. a kind of OLED mould group gamma curve adjusting method, which is characterized in that the adjusting method the following steps are included:
S1) the OLED mould group for not pasting polaroid is provided；
Each target ties up the register value or/and the OLED of target brightness value Lv a little when the OLED mould group S2) not being pasted polaroid
The mould group register value that each target ties up target color coordinates value X, Y a little when not pasting polaroid is written in the OLED mould group.
2. OLED mould group gamma curve adjusting method according to claim 1, which is characterized in that according to the OLED mould group
The target brightness value Lv1 of any high gray and target brightness value Lv2 of any low ash rank obtains each described when not pasting polaroid
Target ties up target brightness value Lv a little, wherein the value range of the high gray is 200~255, and the value range of the low ash rank is
0~20.
3. OLED mould group gamma curve adjusting method according to claim 2, which is characterized in that by the target brightness value
Lv1 and target brightness value Lv2, which is updated to target and ties up a brightness value calculation formula and obtain each target, ties up object brightness a little
Value Lv, wherein the target ties up a brightness value calculation formula are as follows:
Lv=(target ties up grayscale value where a grayscale value/Lv1)Gamma index*(Lv1-Lv2)+Lv2。
4. OLED mould group gamma curve adjusting method according to claim 2, which is characterized in that obtain the object brightness
The method of value Lv1 the following steps are included:
S20 the target brightness value Lv0 of any high gray when the OLED mould group pastes the polaroid and the polaroid) are obtained
Brightness polarizing coefficient KLv；By target brightness value Lv0 divided by brightness polarizing coefficient KLvObtain target brightness value Lv1.
5. OLED mould group gamma curve adjusting method according to claim 2, which is characterized in that any low ash rank
Target brightness value Lv2 is preset value, or when not pasting polaroid for the OLED mould group any low ash rank brightness value.
6. OLED mould group gamma curve adjusting method according to claim 4, which is characterized in that the step S20 includes
Following steps:
Gamma curve when S201) pasting the polaroid to the OLED mould group carries out adjustment, any high gray after record adjustment
Brightness value L v3；
S202 the brightness value L v4 of any high gray when the OLED mould group does not paste the polaroid) is recorded；
S203 brightness value L v3) is obtained into brightness polarizing coefficient K divided by brightness value L v4Lv。
7. OLED mould group gamma curve adjusting method according to claim 1, which is characterized in that the adjusting method also wraps
Include following steps:
S21 target color coordinates value X0, Y0 and the polaroid that the OLED mould group pastes any grayscale when the polaroid) are obtained
Chromaticity coordinates polarizing coefficient KX、KY；
S22) by target color coordinates value X0, Y0 respectively divided by chromaticity coordinates polarizing coefficient KX、KY, obtain the OLED mould group and do not paste partially
Target color coordinates value X, Y of any grayscale when mating plate.
8. OLED mould group gamma curve adjusting method according to claim 7, which is characterized in that the step S21 includes
Following steps:
Gamma curve when S211) pasting the polaroid to the OLED mould group carries out adjustment, records the color of any grayscale after adjustment
Coordinate value X1, Y1；
S212 chromaticity coordinates value X2, Y2 of any grayscale when the OLED mould group does not paste polaroid) is recorded；
S213 chromaticity coordinates value X1, Y1) is obtained into the chromaticity coordinates polarizing coefficient of any grayscale divided by chromaticity coordinates value X2, Y2 respectively
KX、KY。
9. OLED mould group gamma curve adjusting method according to claim 1, which is characterized in that further comprising the steps of:
Coordinate value Xm, Ym of the same colour are provided, each target is obtained and ties up chromaticity coordinates a little, R, G a little are tied up to each target
Register value is adjusted, and chromaticity coordinates value X, Y for tying up each target a little is all fallen in the error range of Xm, Ym.
10. OLED mould group gamma curve adjusting method according to claim 9, which is characterized in that when the target is tied up a little
When grayscale value is 11~254, then the target ties up the choosing value range that the choosing value range of chromaticity coordinates Xm a little is 0.307~0.317, Ym
It is 0.324~0.334；
When it is 0~10 that the target, which ties up grayscale value a little, then the target tie up the choosing value range of chromaticity coordinates Xm a little for 0.262~
0.362, the choosing value range of Ym is 0.279~0.379.
11. -10 described in any item OLED mould group gamma curve adjusting methods according to claim 1, which is characterized in that also wrap
Include following steps:
It obtains each target and ties up brightness value a little, R, G a little is tied up to each target, B-register value is adjusted, make
Each target is tied up brightness value L v5 a little and is all fallen in the error range of target brightness value Lv.
12. OLED mould group gamma curve adjusting method according to claim 11, which is characterized in that further include following step
It is rapid:
The each target of readback ties up present intensity value Lv6 and current color coordinate value X3, Y3 a little, and is tied up according to reading back result
Point is adjusted until each target is tied up present intensity value Lv7 a little and all fallen in the error range of target brightness value Lv, each
The target is tied up current color coordinate value X4, Y4 a little and is all fallen in the error range of target color coordinates value X, Y.
13. -10 described in any item OLED mould group gamma curve adjusting methods according to claim 1, which is characterized in that also wrap
It includes following steps: after completing gamma curve adjusting, pasting polaroid in the OLED mould group.
14. a kind of OLED mould group gamma curve regulating device, including for providing the host computer of configuration parameter, for providing figure
As the picture signal generator of driving signal, and the optical tester for acquiring brightness and chromaticity coordinates data, feature exist
In the regulating device further includes controller；Wherein,
According to claim 1, -10 described in any item OLED mould group gamma curve adjusting methods obtain the OLED mould to the controller
Each target ties up the target brightness value Lv selected to group when not pasting polaroid or/and when OLED mould group does not paste polaroid each target is tied up a little
Target color coordinates value X, Y；
The picture signal generator is also used to the register value or/and each aim colour of each target brightness value Lv
The register value of coordinate value X, Y are written in the OLED mould group.
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| CN107358255A (en) * | 2017-06-28 | 2017-11-17 | 武汉精测电子技术股份有限公司 | GAMMA based on convolutional neural networks ties up a classification learning method and device |
| CN107346653B (en) * | 2017-06-28 | 2021-05-07 | 武汉精测电子集团股份有限公司 | GAMMA curve adjusting method and device based on deep learning |
| CN109767722B (en) * | 2017-11-09 | 2021-03-05 | 上海和辉光电股份有限公司 | OLED module Gamma adjusting method and device |
| CN108364606B (en) * | 2018-02-11 | 2020-10-30 | 武汉精测电子集团股份有限公司 | Gamma adjusting method for OLED module |
| CN108597443B (en) * | 2018-04-13 | 2019-11-08 | 武汉精测电子集团股份有限公司 | OLED mould group Gamma adjusting process and system based on PID industrial control unit (ICU) |
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| CN111540312B (en) * | 2020-07-07 | 2020-10-02 | 武汉精立电子技术有限公司 | Gamma modulation method |
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