CN107221272A - Display screen parameter setting method - Google Patents
Display screen parameter setting method Download PDFInfo
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- CN107221272A CN107221272A CN201710538815.9A CN201710538815A CN107221272A CN 107221272 A CN107221272 A CN 107221272A CN 201710538815 A CN201710538815 A CN 201710538815A CN 107221272 A CN107221272 A CN 107221272A
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a kind of display screen parameter setting method, including：The 3 current gamma voltages methods of salary distribution of input and current white chromaticity coordinates；The current white chromaticity coordinates is adjusted, target white chromaticity coordinates is obtained；The brightness of selection test at least three current grays picture corresponding with the target white chromaticity coordinates；According to the brightness of the measured at least three current grays picture, the brightness of some predeterminated position grey menus is calculated；According to the luminance acquisition gamma of some predeterminated position grey menus；The 3 new gamma voltage methods of salary distribution are obtained according to the gamma, and export the 3 new gamma voltage methods of salary distribution.The time of test grey menu can be greatly reduced by the display screen parameter setting method, whole 3 gamma recordable time is then reduced, effectively increases production efficiency.
Description
Technical field
The present invention relates to display screen testing field, more particularly to a kind of 3-gamma method for burn-recording.
Background technology
The reasons such as backlight chromaticity distortion and glass deviation due to display screen, can cause the display effect of different display screens
Difference, for example, the white picture of display screen, often shows partially blue or partially yellow, i.e., the actual white being made up of redgreenblue
Chromaticity coordinates is not reference white chromaticity coordinates, and therefore causes the transition of each grey menu corresponding to actual white chromaticity coordinates
It is unsmooth, so as to influence the display effect of display screen.At present by the white chromaticity coordinates of adjustment to target white chromaticity coordinates, i.e., again
Acquisition target white chromaticity coordinates is adjusted to RGB；And adjust simultaneously because RGB matches change and causes picture transition
Rough gamma, the brightness value that the RGB after adjustment is constituted into target white chromaticity coordinates parameter and RGB burns
In record to the driving chip of display screen, that is, carry out the 3-gamma burnings of 3 gamma parameters of RGB.Burnt by 3-gamma
Record can effectively adjust the display effect of display screen.Yet with needing in the process by testing a fairly large number of grey menu
And corresponding parameter is obtained, and the time for testing corresponding grey menu is relatively long, therefore cause 3-gamma recordable times to become
It is long, it is unfavorable for needs of production.
The content of the invention
Based on this, it is necessary to for 3-gamma recordable times it is longer the problem of there is provided one kind can effectively shorten 3-
Gamma recordable times, with the display screen parameter setting method of improving production efficiency.
For example, a kind of display screen parameter setting method, comprises the following steps：
The current 3-gamma voltages method of salary distribution of input and current white chromaticity coordinates；
The current white chromaticity coordinates is adjusted, target white chromaticity coordinates is obtained；
The brightness of selection test at least three current grays picture corresponding with the target white chromaticity coordinates；
According to the brightness of the measured at least three current grays picture, some predeterminated position grey menus are calculated
Brightness；
According to the luminance acquisition gamma of some predeterminated position grey menus；
The new 3-gamma voltage methods of salary distribution are obtained according to the gamma, and export the new 3-gamma electricity
Press the method for salary distribution.
In one of the embodiments, the adjustment current white chromaticity coordinates, obtains the step of target white chromaticity coordinates
Suddenly include：
According to the current white chromaticity coordinates, the grey decision-making of the redgreenblue in white is analyzed respectively；
By reducing the grey decision-making of one of which or two kinds of colors, the target white chromaticity coordinates is obtained.
In one of the embodiments, the selection test is corresponding with the current white chromaticity coordinates at least three current
The step of brightness of grey menu, includes：
The brightness of selection test three current gray pictures corresponding with the current white chromaticity coordinates.
In one of the embodiments, the brightness of at least three current grays picture measured by the basis, meter
The step of brightness for calculating some predeterminated position grey menus, includes：
When the gamma values for obtaining two current gray pictures are identical, then set in two current gray pictures
Between grey menu gamma values also be the identical gamma values.
In one of the embodiments, the brightness of at least three current grays picture measured by the basis, meter
The step of brightness for calculating some predeterminated position grey menus, also includes：
From the brightness of at least three current grays picture, current gray picture described in any two is obtained
Gamma values are respectively the first gamma values and the 2nd gamma values, when the first gamma values and the difference of the 2nd gamma values
When the absolute value of value is less than or equal to 0.2, then the gamma values for setting the grey menu in the middle of two current gray pictures are
The first gamma values and the 2nd gamma values and value half.
In one of the embodiments, the brightness of at least three current grays picture measured by the basis, meter
The step of brightness for calculating some predeterminated position grey menus, also includes：
When the absolute value of the first gamma values and the difference of the 2nd gamma values is more than 0.2, then pass through test
The brightness of another current gray picture in the middle of described two current gray level pictures, obtains another current gray picture
Gamma values be the 3rd gamma values, be less than when the absolute value of the first gamma values and the difference of the 3rd gamma values or
During equal to 0.2, then the current gray picture and the corresponding 3rd gamma values of correspondence the first gamma values are set
The gamma values of grey menu in the middle of the current gray picture be the first gamma values and the 3rd gamma values and
The half of value；The current gray picture of correspondence the 2nd gamma values is described current with the corresponding 3rd gamma values
The gamma values of grey menu in the middle of grey menu are the 2nd gamma values and the 3rd gamma values and value one
Half.
In one of the embodiments, the step of input current 3-gamma voltage methods of salary distribution include：
The magnitude of voltage at each resistance two ends in difference input register.
In one of the embodiments, the step that the new gamma voltage methods of salary distribution are obtained according to the gamma
Suddenly include：
According to the brightness of acquired each current gray picture and corresponding gamma values, calculating is obtained described in each
Current gray picture magnitude of voltage, to obtain the new 3-gamma voltage methods of salary distribution.
In one of the embodiments, also wrapped after the step of output new 3-gamma voltage methods of salary distribution
Include：
By the target white chromaticity coordinates, and grey menu corresponding with the new 3-gamma voltage methods of salary distribution
Brightness be burned onto in the driving chip of the display screen.
In one of the embodiments, also wrapped after the step of output new 3-gamma voltage methods of salary distribution
Include：
By the target white chromaticity coordinates, and grey menu corresponding with the new 3-gamma voltage methods of salary distribution
Brightness be burned onto in flash holders.
Above-mentioned display screen parameter setting method, during 3-gamma burnings are carried out, by testing in RGB white
A few grey menu brightness, according to smooth gamma values curve and gamma, estimate other GTGs picture
The brightness in face.According to the brightness of each color correspondence GTG and gamma values, correspondence GTG is obtained by exponential function accounting equation
Brightness.All grey menus without carrying out respectively to each color test obtaining its corresponding brightness.According to each
Resistance corresponding to individual GTG, on the basis of total voltage immobilizes, each resistance that can be mutually concatenated is distributed
Voltage, be also known that its resistance, the resistance corresponding with each gray scale voltage distribution condition be burned onto to the driving of display screen
In chip or flash memory.Thus, GTG test pictures can be effectively reduced by way of such a reckoning gray-scale intensity
Time, so that the recordable time of whole 3-gamma burnings is reduced, so as to improve the display effect of display screen, with greatly
Improve into production efficiency.And can be flexibly applied to different driving chips by the way of the 3-gamma burnings, and no longer with
The GTG input picture of driving chip requirement is tested.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the 3-gamma method for burn-recording of an embodiment.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the better embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make to understand more the disclosure
Plus it is thorough comprehensive.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
" right side ", " top ", " bottom ", " bottom ", " top " and similar statement for illustrative purposes only, are not offered as being only
One embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " including one or more
The arbitrary and all combination of related Listed Items.
For example, a kind of display screen parameter setting method, comprises the following steps：
The current 3-gamma voltages method of salary distribution of input and current white chromaticity coordinates；
The current white chromaticity coordinates is adjusted, target white chromaticity coordinates is obtained and inputs；
The brightness of selection test at least three current grays picture corresponding with the current white chromaticity coordinates；
According to the brightness of the measured at least three current grays picture, some predeterminated position grey menus are calculated
Brightness；
According to the luminance acquisition gamma of some predeterminated position grey menus；
The new 3-gamma voltage methods of salary distribution are obtained according to the gamma, and export the new 3-gamma electricity
Press the method for salary distribution.
For example, after the output new 3-gamma voltage methods of salary distribution, in addition to step：According to the new 3-
The gamma voltage methods of salary distribution, by the target white chromaticity coordinates, and it is corresponding with the new 3-gamma voltage methods of salary distribution
Grey menu brightness be burned onto in the driving chip of the display screen or flash holders in.
The white being wherein made up of redgreenblue, when being adjusted white, enters equivalent to the color of red, green, blue three
Row adjustment, 3-gamma is the red gamma value parameters, green gamma value parameters, blueness gamma value parameters for representing white
Referred to as.
For example, as shown in figure 1, a kind of display screen parameter setting method, comprises the following steps：
110：The current 3-gamma voltages method of salary distribution of input and current white chromaticity coordinates；
For example, the step of input current 3-gamma voltage methods of salary distribution include each in input register respectively
The magnitude of voltage at resistance two ends.Each resistance in the register is connected in series with each other, and the two ends of each resistance are assigned with electricity
Pressure, when total voltage immobilizes, then when each ohmically voltage changes, passes through each resistance value and total voltage value
Obtain each ohmically voltage.
It should be understood that total voltage refers to control liquid crystal molecule windup-degree, the voltage put on liquid crystal molecule.Liquid crystal
The windup-degree of molecule influences the transmitance of light, that is to say, that function of the voltage and light transmittance applied into certain rule
Relation.And transmitance influences the brightness of display screen, specifically, the GTG pair of the sub-pixel in influence display screen in each pixel
The brightness answered.
120：The current white chromaticity coordinates is adjusted, target white chromaticity coordinates is obtained；
For example, according to the current white chromaticity coordinates, the grey decision-making of the redgreenblue in white is analyzed respectively；
By reducing the grey decision-making of one of which or two kinds of colors, the target white chromaticity coordinates is obtained.
Each color shown by display screen is constituted by three sub-pixels, i.e., the color structure of red, green, blue three of different grey decision-makings
Into a currently displayed color of display screen.That is, the color change that each is put on display screen, is all by structure in fact
Into three red, green, blues of this point, what the gray scale variation of sub-pixel was brought.Therefore, the 3-gamma voltages method of salary distribution
Substantially three sub-pixels of RGB each correspond to the different voltages distributed on resistance.So when the color effect that display screen is shown
When fruit is not good, for example, white displays are partially blue or partially yellow, then need to readjust the grey decision-making proportioning of the redgreenblue of white,
So as to show the pure white of color.Wherein each color can be represented by chromaticity coordinate.
For example, the current white chromaticity coordinates is represented with F (x, y), when its display effect is not good, by resetting white
RGB is matched, i.e., by changing the respective grey decision-making of RGB, to obtain the target white color represented with F1 (x1, y1)
Coordinate.White displays after adjustment are pure, but are due to that the white display of the corresponding voltage influence of GTG white after adjusting is bright
Degree, thus the rough problem of picture transition can be caused.Therefore, it is also desirable to adjust the voltage on each white GTG, that is, need
Change the voltage on each GTG after redgreenblue adjustment.So then need to the redgreenblue in the white after adjustment
Gray-scale intensity test is carried out, to obtain the magnitude of voltage that should apply corresponding to each GTG.
130：The brightness of selection test at least three current grays picture corresponding with the target white chromaticity coordinates；
For example, the brightness of selection 3,8 or 10 current gray pictures of test.It is generally necessary to carry out 30, or even 60
The test of individual grey menu.Specifically with the driving chip of each producer, its corresponding GTG position and quantity are different, actual test
When selection test is carried out according to specific different driving chip.
It is understood that after current white adjustment, the grey menu for constituting its color of red, green, blue three is a lot.Generally need
The brightness of each grey menu is tested, so that the voltage for obtaining needing to put on each correspondence GTG could be calculated accurately.
But, because the gamma in the 3-gamma voltage methods of salary distribution that tentatively input is smooth, gamma value curves are also to connect
Continuous.It therefore, it can the mode by using supposition, when test obtains the brightness of a GTG, then near the GTG other
The brightness of GTG can be obtained by way of reckoning.
For example, the brightness of selection test three current gray pictures corresponding with the current white chromaticity coordinates.I.e.
By the brightness for testing three grey menus in the color of red, green, blue three corresponding to white, you can obtain it by way of reckoning
The brightness of his GTG.
140：According to the brightness of the measured at least three current grays picture, calculate some predeterminated position GTGs and draw
The brightness in face；
For example, gamma is randomly choosed, and and for example, in addition to above-mentioned at least three current grays picture, display screen
Test also needs to carry out brightness value calculating to the grey menu of other positions.
Specific calculation is as follows.
For example, when the gamma values for obtaining two current gray pictures are identical, then setting two current grays to draw
The gamma values of grey menu in the middle of face are also the identical gamma values.
I.e. when the corresponding gamma values of two GTGs are equal, the gamma of other GTGs in the middle of two GTGs can be calculated
Value is identical with the gamma values of described two GTGs.So closed according to the function between brightness and voltage and corresponding gamma values
System, the brightness value of other each GTGs is resulted according to gamma, is so treated in the resistive voltage value on the GTG of adjustment
Just it can be calculated and obtained by formula.
For example, from the brightness of at least three current grays picture, obtaining current gray picture described in any two
Gamma values be respectively the first gamma values and the 2nd gamma values, when the first gamma values and the 2nd gamma values
When the absolute value of difference is less than or equal to 0.2, then the gamma values of the grey menu in the middle of two current gray pictures are set
For the first gamma values and the 2nd gamma values and value half.For example, the first gamma values are 0.5, second
Gamma is 0.68 value, and now, the absolute value of the first gamma values and the difference of the 2nd gamma values is less than or equal to
0.2, then the gamma values for setting the grey menu in the middle of two current gray pictures are 0.59.
Because each gamma is smooth continuous curve, therefore when the gamma values of two GTGs are more or less the same
When, for example, the absolute value of its difference is in the range of 0.2, then pass through taking the corresponding gamma values of two GTGs and value half, table
Show the gamma values of other GTGs in the middle of two GTGs.Equally the above-mentioned calculation of use obtains GTG institute in such cases
Corresponding resistive voltage value.
For example, when the absolute value of the first gamma values and the difference of the 2nd gamma values is more than 0.2, then passing through
The brightness for another current gray picture tested in the middle of described two current gray level pictures, obtains another current gray
The gamma values of picture are the 3rd gamma values, when the absolute value of the first gamma values and the difference of the 3rd gamma values is small
When 0.2, then the current gray picture and corresponding 3rd gamma of correspondence the first gamma values are set
The gamma values of grey menu in the middle of the current gray picture of value are the first gamma values and the 3rd gamma values
And value half；The current gray picture of correspondence the 2nd gamma values is described with the corresponding 3rd gamma values
The gamma values of grey menu in the middle of current gray picture are the 2nd gamma values and the 3rd gamma values and value
Half.For example, the first gamma values are 2.1, the 2nd gamma is 2.5 values, now, the first gamma values and described second
The gamma values difference that the absolute value of the difference of gamma values is more than the GTG of 0.2, i.e., two is larger, and another GTG picture is surveyed by adding
The brightness in face obtains the 3rd gamma values less than 2.5 more than 2.1, then enters to advance in the way of above-described embodiment
One step calculates the brightness of other grey menus.It should be noted that the difference of the first gamma values and the 2nd gamma values
The absolute value of value can not be 0.2, for example, the absolute value of the first gamma values and the difference of the 2nd gamma values is
0.3 or 0.1 etc., determined with specific reference to actual tests.For example, the first gamma values and the difference of the 3rd gamma values
Absolute value may not be 0.2, for example, the absolute value of the first gamma values and the difference of the 3rd gamma values is 0.1
Or 0.3 etc., determined with specific reference to actual tests.
I.e. when the gamma values between two tested GTGs are differed farther out or in order to pursue higher supposition precision, pass through
Plus the brightness for another grey menu surveyed in the middle of two GTGs, obtain corresponding gamma values.Described in above-described embodiment
Supposition mode obtain resistive voltage value corresponding to other GTGs.
150：According to the luminance acquisition gamma of some predeterminated position grey menus；
In above-mentioned implementation steps, the brightness of each GTG can be obtained, then is closed according to the function between GTG and brightness
System, can obtain the gamma, the gamma after so being clearly adjusted just may be used by gamma value curves
To speculate the gamma values of part gray-scale, difference gamma value curves corresponding to part gray-scale are obtained, i.e., in certain gamma value models
It is adjusted in enclosing, without repeatedly being calculated.
160：The new 3-gamma voltage methods of salary distribution are obtained according to the gamma, and export the new 3-
The gamma voltage methods of salary distribution.
For example, according to the brightness of acquired each current gray picture and corresponding gamma values, calculating obtains each
The current gray picture magnitude of voltage, to obtain the new 3-gamma voltage methods of salary distribution.
The new 3-gamma voltage methods of salary distribution be adjustment after target white corresponding to the color of red, green, blue three each
Magnitude of voltage distribution condition on GTG, is specially the voltage that the two ends of the resistance corresponding with each GTG are applied.It can manage
Solution, because total voltage is known fixed value, divides because each resistance is to be serially connected, therefore on each resistance
Do not distribute each voltage calculated, that is, register is set, i.e., each that loaded on each resistance is set on register
Voltage.Finally register is set and is burned onto in the memory structure of display screen, for example, register is set and is burned onto display screen
On driving chip or it is burned onto in flash holders.
For example, by the target white chromaticity coordinates, and GTG corresponding with the new 3-gamma voltage methods of salary distribution
The brightness of picture is burned onto in the driving chip of the display screen.
For example, by the target white chromaticity coordinates, and GTG corresponding with the new 3-gamma voltage methods of salary distribution
The brightness of picture is burned onto in flash holders.
It is burned onto on the driving chip of display screen or is burned onto in flash holders that is, register is set.
Above-mentioned display screen parameter setting method, during 3-gamma burnings are carried out, by testing in RGB white
A few grey menu brightness, according to smooth gamma values curve and gamma, estimate other GTGs picture
The brightness in face.According to the brightness of each color correspondence GTG and gamma values, correspondence GTG is obtained by exponential function accounting equation
Brightness.All grey menus without carrying out respectively to each color test obtaining its corresponding brightness.According to each
Resistance corresponding to individual GTG, on the basis of total voltage immobilizes, each resistance that can be mutually concatenated is distributed
Voltage, be also known that its resistance, the resistance corresponding with each gray scale voltage distribution condition be burned onto to the driving of display screen
In chip or flash memory.Thus, GTG test pictures can be effectively reduced by way of such a reckoning gray-scale intensity
Time, so that the recordable time of whole 3-gamma burnings is reduced, so as to improve the display effect of display screen, with greatly
Improve into production efficiency.And can be flexibly applied to different driving chips by the way of the 3-gamma burnings, and no longer with
The GTG input picture of driving chip requirement is tested.
For example, each display screen, conventional method needs to test the brightness data of 65 grey menus, and use in the present invention
Display screen 3-gamma method for burn-recording is stated, the brightness data of wherein 3 to 8 grey menus can be only tested, you can calculating obtains it
The brightness data of his 63 grey menus, can about save the testing time of 52 to 58 seconds, significant increase production efficiency.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of display screen parameter setting method, it is characterised in that including：
The current 3-gamma voltages method of salary distribution of input and current white chromaticity coordinates；
The current white chromaticity coordinates is adjusted, target white chromaticity coordinates is obtained；
The brightness of selection test at least three current grays picture corresponding with the target white chromaticity coordinates；
According to the brightness of the measured at least three current grays picture, the bright of some predeterminated position grey menus is calculated
Degree；
According to the luminance acquisition gamma of some predeterminated position grey menus；
The new 3-gamma voltage methods of salary distribution are obtained according to the gamma, and export the new 3-gamma voltages point
With mode.
2. display screen parameter setting method according to claim 1, it is characterised in that the adjustment current white color
Coordinate, the step of obtaining target white chromaticity coordinates includes：
According to the current white chromaticity coordinates, the grey decision-making of the redgreenblue in white is analyzed respectively；
By reducing the grey decision-making of one of which or two kinds of colors, the target white chromaticity coordinates is obtained.
3. display screen parameter setting method according to claim 1, it is characterised in that the selection is tested and described current
The step of brightness of the corresponding at least three current grays picture of white chromaticity coordinates, includes：
The brightness of selection test three current gray pictures corresponding with the current white chromaticity coordinates.
4. display screen parameter setting method according to claim 1, it is characterised in that measured by the basis it is described extremely
The step of brightness of few three current gray pictures, brightness for calculating some predeterminated position grey menus, includes：
When the gamma values for obtaining two current gray pictures are identical, then set in the middle of two current gray pictures
The gamma values of grey menu are also the identical gamma values.
5. display screen parameter setting method according to claim 4, it is characterised in that measured by the basis it is described extremely
The step of brightness of few three current gray pictures, brightness for calculating some predeterminated position grey menus, also includes：
From the brightness of at least three current grays picture, the gamma values of current gray picture described in any two are obtained
Respectively the first gamma values and the 2nd gamma values, it is absolute when the first gamma values and the difference of the 2nd gamma values
When value is less than or equal to 0.2, then the gamma values for setting the grey menu in the middle of two current gray pictures are described first
Gamma values and the 2nd gamma values and value half.
6. display screen parameter setting method according to claim 4, it is characterised in that measured by the basis it is described extremely
The step of brightness of few three current gray pictures, brightness for calculating some predeterminated position grey menus, also includes：
It is when the absolute value of the first gamma values and the difference of the 2nd gamma values is more than 0.2, then described by test
The brightness of another current gray picture in the middle of two current gray level pictures, obtains another current gray picture
Gamma values are the 3rd gamma values, when the absolute value of the first gamma values and the difference of the 3rd gamma values is less than or waits
When 0.2, then the current gray picture of correspondence the first gamma values and the institute of the corresponding 3rd gamma values are set
State the gamma values of grey menu in the middle of current gray picture for the first gamma values and the 3rd gamma values and value
Half；The current gray picture of correspondence the 2nd gamma values and the current ash of the corresponding 3rd gamma values
The gamma values of grey menu in the middle of rank picture are the 2nd gamma values and the 3rd gamma values and value half.
7. display screen parameter setting method according to claim 1, it is characterised in that the current 3-gamma of the input
The step of voltage method of salary distribution, includes：
The magnitude of voltage at each resistance two ends in difference input register.
8. display screen parameter setting method according to claim 1, it is characterised in that described according to the gamma
The step of obtaining the new gamma voltage methods of salary distribution includes：
According to the brightness of acquired each current gray picture and corresponding gamma values, it is described current that calculating obtains each
Grey menu magnitude of voltage, to obtain the new 3-gamma voltage methods of salary distribution.
9. display screen parameter setting method according to claim 1, it is characterised in that the output new 3-
Also include after the step of gamma voltage methods of salary distribution：
By the target white chromaticity coordinates, and grey menu corresponding with the new 3-gamma voltage methods of salary distribution is bright
Degree is burned onto in the driving chip of the display screen.
10. display screen parameter setting method according to claim 1, it is characterised in that the output new 3-
Also include after the step of gamma voltage methods of salary distribution：
By the target white chromaticity coordinates, and grey menu corresponding with the new 3-gamma voltage methods of salary distribution is bright
Degree is burned onto in flash holders.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039143A (en) * | 2017-12-06 | 2018-05-15 | 京东方科技集团股份有限公司 | A kind of method and device of gamma circuit adjustment |
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