CN103854629B - A kind of brightness correcting method of display terminal - Google Patents
A kind of brightness correcting method of display terminal Download PDFInfo
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- CN103854629B CN103854629B CN201210512527.3A CN201210512527A CN103854629B CN 103854629 B CN103854629 B CN 103854629B CN 201210512527 A CN201210512527 A CN 201210512527A CN 103854629 B CN103854629 B CN 103854629B
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Abstract
The present invention relates to the brightness correcting method of display terminal, comprise the following steps: S1, display terminal is set shows a specific grey-scale information, under at least one backlight intensity, measure center brightness value and the corner brightness value of display terminal, set up the corresponding relation between center brightness value and corner brightness value by matching；S2, arrange display terminal keep a specific backlight illumination, under at least one gray level information, measure center brightness value and the corner brightness value of display terminal, it is thus achieved that the center relative transmittance under each gray level information and corner absorbance；The corresponding relation between center relative transmittance and corner relative transmittance is set up by matching；S3, by corner brightness instrument measure display terminal corner present intensity value, it is thus achieved that the center present intensity value of this display terminal；S4, the center present intensity value of acquisition is compared with the display terminal brightness value preset, and be corrected.Use the present invention can obtain display terminal center true brightness value easily and be corrected.
Description
Technical field
The present invention relates to display terminal, more particularly, it relates to the brightness correcting method of a kind of display terminal.
Background technology
Along with the development of science and technology, various man-machine interactions are more and more important, and display terminal has as one
High image quality, volume is little, low-power consumption, radiationless preferable man-machine interaction instrument, come into human lives's
Every field, becomes very important outut device in a kind of man-machine interaction.
Along with people are for the continuous pursuit of quality of the life, display terminal has applied among all trades and professions.
People become increasingly stricter for the requirement of terminal, before proposing for the concordance stability of display effect
Not some demands, but due to display terminal or display device, in use, backlight illumination meeting
There is the change of randomness in the time along with the environment used and use so that display terminal is employing one section
Will there is certain difference with display effect when dispatching from the factory after time, this brings the biggest problem, shadow to using
Ring display effect.
Owing to display terminal display effect can be with using environment and use time to change therewith, so showing
Show that equipment in use real time correction is necessary, in the prior art, by using external brightness
Instrument is corrected bringing the inconvenience of many to practical operation, and if using built-in correction to be obviously more convenient for grasping
Make, yet with the inhomogeneities of screen backlight lamp tubes various in display terminal so that screen center and corner brightness
Become nonlinear change, affect calibration result.So how use built-in luminance meter, obtain screen center the brightest
Angle value, and screen cent(e)ring is become a big technical barrier to unified standard.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned display terminal display effect meeting of prior art
With using environment and use time to change therewith, use external luminance meter of the prior art to correct not
Facilitate and use built-in correction to affect calibration result due to the inhomogeneities of display terminal various screen backlight lamp tube
Defect, it is provided that a kind of use built-in luminance meter can obtain display terminal center true brightness value easily to go forward side by side
The brightness correcting method of the display terminal of row correction.
The technical solution adopted for the present invention to solve the technical problems is: construct the brightness school of a kind of display terminal
Correction method, comprises the following steps:
S1, display terminal be set show a specific grey-scale information, under at least one backlight intensity, by
Heart luminance meter is measured the center brightness value of display terminal and is measured the corner of display terminal by corner brightness instrument
Brightness value, the corresponding relation set up between center brightness value and corner brightness value by matching is as follows:
Lc=FL(Lb)；
Wherein: LcCentered by brightness value, LbFor corner brightness value；
S2, arrange display terminal keep a specific backlight illumination, under at least one gray level information, pass through
Center brightness instrument is measured the center brightness value of display terminal and is measured the limit of display terminal by corner brightness instrument
Angular brightness value, it is thus achieved that the center relative transmittance under each gray level information and corner absorbance；Built by matching
Vertical corresponding relation between center relative transmittance and corner relative transmittance:
Tc=FT(Tb)；
Wherein: TcCentered by relative transmittance；TbFor corner relative transmittance；
S3, by corner brightness instrument measure display terminal corner present intensity value, it is thus achieved that this display terminal
Center present intensity value:
Wherein: LcPresent intensity value centered by ', Lb' for corner present intensity value, Lb255: for corner white lime
The brightness on rank, M is the luminance factor factor under brightness specific grey-scale.
S4, the center present intensity value of this display terminal obtained is carried out with default display terminal brightness value
Compare, and be corrected.
In the brightness correcting method of display terminal of the present invention, described step S1 specifically includes following
Step:
S11, display terminal is set shows a specific grey-scale information；
S12, when backlight intensity is the most weak, by center brightness instrument measure display terminal center brightness value and
Measured the corner brightness value of display terminal by corner brightness instrument, obtain first group of backlight respective value；
S13, it is incremented by backlight intensity successively by a fixed value, and under each backlight intensity, passes through center respectively
The center brightness value of luminance meter measurement display terminal and the corner by corner brightness instrument measurement display terminal are bright
Angle value, obtains organizing backlight respective value more；
S14, by above-mentioned backlight respective value by matching set up between center brightness value and corner brightness value right
Should be related to as follows:
Lc=FL(Lb)；
Wherein: LcCentered by brightness value, LbFor corner brightness value.
In the brightness correcting method of display terminal of the present invention, described step S13 also includes:
S131, when backlight intensity is the strongest, by center brightness instrument measure display terminal center brightness value and
Measured the corner brightness value of display terminal by corner brightness instrument, obtain last group backlight respective value.
In the brightness correcting method of display terminal of the present invention, described step S2 specifically includes following
Step:
S21, arrange display terminal keep a specific backlight illumination；
S22, when 0 GTG, measure the center brightness value of display terminal by center brightness instrument and pass through
The corner brightness value of display terminal measured by corner brightness instrument, obtains first group of GTG respective value, and obtains the 0th
The center relative transmittance of display terminal during GTG and corner relative transmittance；
S23, it is incremented by GTG successively by a fixed value, and is measured by center brightness instrument aobvious respectively at each GTG
Show the center brightness value of terminal and measured the corner brightness value of display terminal by corner brightness instrument, obtaining many groups
GTG respective value, and obtain center relative transmittance and the corner Relative Transmission of display terminal corresponding to each GTG
Rate；
S24, when being set up above-mentioned each GTG by matching between center relative transmittance and corner Relative Transmission
Relation:
Tc=FT(Tb)；
Wherein: TcCentered by relative transmittance；TbFor corner relative transmittance.
In the brightness correcting method of display terminal of the present invention, described step S23 also includes:
S231, when GTG maximum, measure the center brightness value of display terminal by center brightness instrument and pass through
The corner brightness value of display terminal measured by corner brightness instrument, obtains last group GTG respective value, and obtains
The center relative transmittance of display terminal during later group GTG and corner relative transmittance.
In the brightness correcting method of display terminal of the present invention, the center in described step S22 is relative
Absorbance is obtained divided by the brightness on white lime rank, center by center brightness value；Corner relative transmittance passes through limit
Angular brightness value obtains divided by the brightness on white lime rank, corner.
In the brightness correcting method of display terminal of the present invention, in each GTG in described step S23
Heart relative transmittance is obtained divided by the brightness on white lime rank, center by each center brightness value；Each GTG corner phase
Absorbance is obtained divided by the brightness on white lime rank, corner by each corner brightness value.
In the brightness correcting method of display terminal of the present invention, maximum gray in described step S231
Time, center relative transmittance is obtained divided by the brightness on white lime rank, center by the center brightness value of measurement；Limit
Angle relative transmittance is obtained divided by the brightness on white lime rank, corner by the corner brightness value of measurement.
In the brightness correcting method of the display terminal implementing the present invention, have the advantages that and pass through step
S1 obtains center brightness value and the corresponding relation of corner brightness value under specific grey-scale；In step S2 at the specific back of the body
Center GTG relative transmittance and corner relative transmittance and center brightness value, corner brightness is obtained under light intensity
The corresponding relation of value；In step s3, by the arbitrary corner present intensity value measured, it is thus achieved that this display
The center present intensity value of terminal；In step s 4, by center present intensity value and the display terminal preset
Brightness value compares, and is corrected；Use the program, can obtain accurately in this device end
Heart present intensity value, and compared with the brightness value preset by this center present intensity value, and carry out school
Just, no matter the homogeneity question of display terminal screen itself how, can perfectly carry out gamma correction, guarantor
Card and conforming display effect of dispatching from the factory.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the brightness correcting method flow chart of the display terminal of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention clearer, below in conjunction with drawings and Examples, the present invention is entered
Row further describes.Should be appreciated that specific embodiment described herein only in order to explain the present invention,
It is not intended to limit the present invention.
As it is shown in figure 1, in the brightness correcting method flow chart of the display terminal of the present invention, comprise following step
Rapid:
S1, display terminal be set show a specific grey-scale information, under at least one backlight intensity, by
Heart luminance meter is measured the center brightness value of display terminal and is measured the corner of display terminal by corner brightness instrument
Brightness value, the corresponding relation set up between center brightness value and corner brightness value by matching is as follows:
Lc=FL(Lb)；
Wherein: LcCentered by brightness value, LbFor corner brightness value；
S2, arrange display terminal keep a specific backlight illumination, under at least one gray level information, pass through
Center brightness instrument is measured the center brightness value of display terminal and is measured the limit of display terminal by corner brightness instrument
Angular brightness value, it is thus achieved that the center relative transmittance under each gray level information and corner absorbance；Built by matching
Vertical corresponding relation between center relative transmittance and corner relative transmittance:
Tc=FT(Tb)；
Wherein: TcCentered by relative transmittance；TbFor corner relative transmittance；
S3, by corner brightness instrument measure display terminal corner present intensity value, it is thus achieved that this display terminal
Center present intensity value:
Wherein: LcPresent intensity value centered by ', Lb' for corner present intensity value, Lb255: for corner white lime
The brightness on rank, M is the luminance factor factor under brightness specific grey-scale.
S4, the center present intensity value of this display terminal obtained is carried out with default display terminal brightness value
Compare, and be corrected.
Further, step S1 specifically includes following steps:
S11, display terminal is set shows a specific grey-scale information；This specific grey-scale information can be according to actual need
Choose.Backlight illumination can be divided into as 0-255 totally 256 rank, and user chooses this specific grey-scale letter
Breath is the 200th GTG；
S12, when backlight intensity is the most weak, by center brightness instrument measure display terminal center brightness value and
Measured the corner brightness value of display terminal by corner brightness instrument, obtain first group of backlight respective value；Arrange aobvious
Show that the backlight illumination of terminal is for the most weak, at the center of display terminal built-in center brightness instrument, at display terminal
Corner brightness instrument is placed in corner (i.e. the surrounding any position of display terminal)；And by center brightness instrument and limit
The brightness value of position when backlight intensity is the most weak measured by angular brightness instrument；
S13, it is incremented by backlight intensity successively by a fixed value, and under each backlight intensity, passes through center respectively
The center brightness value of luminance meter measurement display terminal and the corner by corner brightness instrument measurement display terminal are bright
Angle value, obtains organizing backlight respective value more；By being incremented by backlight intensity successively by a fixed value, then measure each feelings
Condition center and the brightness value of corner, so that the data measured are more regular, more can reasonably react
The relation that center brightness value is corresponding with corner brightness value；This fixed value can need to arrange, as thought according to user
Measuring more data, can fixed value be arranged a little bit smaller, backlight measurement group number n=(backlight intensity is maximum
Value A-backlight illumination minima B)/fixed value+1；
S14, by above-mentioned backlight respective value by matching set up between center brightness value and corner brightness value right
Should be related to as follows:
Lc=FL(Lb)；
Wherein: LcCentered by brightness value, LbFor corner brightness value.
The n group backlight respective value (center brightness value, corner brightness value) of the most above-mentioned measurement is fitted, and obtains
Obtain corresponding relation between the two.
Further, also include in step S13:
S131, when backlight intensity is the strongest, by center brightness instrument measure display terminal center brightness value and
Measured the corner brightness value of display terminal by corner brightness instrument, obtain last group backlight respective value.
Further, step S2 specifically includes following steps:
S21, arrange display terminal keep a specific backlight illumination；This specific backlight illumination can be according to reality
Border needs to choose.Such as this display device optional one commonly uses backlight illumination；
S22, when 0 GTG, measure the center brightness value of display terminal by center brightness instrument and pass through
The corner brightness value of display terminal measured by corner brightness instrument, obtains first group of GTG respective value, and obtains the 0th
The center relative transmittance of display terminal during GTG and corner relative transmittance；Generally display terminal can be divided
For 0-255 GTG, first user chooses lowest-order that is the 0th GTG, in the center of display terminal is built-in
Heart luminance meter, places corner brightness instrument in the corner (i.e. the surrounding any position of display terminal) of display terminal,
And measure the brightness value of position when 0 GTG by center brightness instrument and corner brightness instrument；
S23, it is incremented by GTG successively by a fixed value, and is measured by center brightness instrument aobvious respectively at each GTG
Show the center brightness value of terminal and measured the corner brightness value of display terminal by corner brightness instrument, obtaining many groups
GTG respective value, and obtain center relative transmittance and the corner Relative Transmission of display terminal corresponding to each GTG
Rate；By being incremented by GTG successively by a fixed value, then measure each situation center and the brightness value of corner, permissible
Make the data measured more regular, more can reasonably reaction center brightness value and corner brightness value right
The relation answered；This fixed value can need to arrange according to user, as wanted to measure more data, and can be by fixed value
Arrange a little bit smaller, GTG measurement group number m=(maximum gray C-minimum gray D)/fixed value+1；Logical
Often can arrange maximum gray is 255, and minimum gray is 0, and fixed value is 1, is i.e. incremented by successively according to adding 1
GTG；
S24, when being set up above-mentioned each GTG by matching between center relative transmittance and corner Relative Transmission
Relation:
Tc=FT(Tb)；
Wherein: TcCentered by relative transmittance；TbFor corner relative transmittance.
Further, step S23 also includes:
S231, when GTG maximum, measure the center brightness value of display terminal by center brightness instrument and pass through
The corner brightness value of display terminal measured by corner brightness instrument, obtains last group GTG respective value, and obtains
The center relative transmittance of display terminal during later group GTG and corner relative transmittance.
Further, the center relative transmittance in step S22 passes through center brightness value divided by center white lime
The brightness on rank obtains；Corner relative transmittance is obtained divided by the brightness on white lime rank, corner by corner brightness value
?.
Further, each GTG center relative transmittance in step S23 by each center brightness value divided by
The brightness on heart white lime rank obtains；Each GTG corner relative transmittance is by each corner brightness value divided by corner
The brightness on white lime rank obtains.
Further, in step S231 during maximum gray, center relative transmittance is bright by the center measured
Angle value obtains divided by the brightness on white lime rank, center；Corner relative transmittance is removed by the corner brightness value measured
Obtain with the brightness on white lime rank, corner.
In step s3, by two states (under the specific grey-scale center collected in step S1 and S2
Brightness value and the corresponding relation of corner brightness value, center GTG relative transmittance and limit under specific backlight intensity
Angle relative transmittance and center brightness value, the corresponding relation of corner brightness value), calculate and draw this display terminal
Display tolerance computing formula:
Wherein: LcPresent intensity value centered by ', Lb' for corner present intensity value, Lb255: for corner white lime
The brightness on rank, M is the luminance factor factor under brightness specific grey-scale.M value is that under a certain brightness, centre is the whitest
GTG and specific grey-scale brightness value ratio.
By using above-mentioned formula, built-in brightness measurer can be reached by and measure display terminal any side
The present intensity value of Angle Position, it is thus achieved that the center present intensity value of this display terminal.No matter use this step
The homogeneity question of screen itself how, can measure center present intensity value accurately.
Center present intensity value by this display terminal obtained is bright with the display terminal preset in step s 4
Angle value compares, and is corrected.
Use the said method of the present invention, display terminal any position can be reached by, calculate display terminal
Center present intensity value (actual value), carries out gamma correction, gamma correction, brightness survey to display terminal
Examination etc..Using this bearing calibration, luminance meter can be made to place any position in screen, tube panel itself is unequal
Even sex chromosome mosaicism how, can accomplish perfect data tolerance correction.So that user in use adjusts
Whole brightness keeps and dispatches from the factory conforming display effect.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (5)
1. the brightness correcting method of a display terminal, it is characterised in that comprise the following steps:
S1, display terminal be set show a specific grey-scale information, under at least one backlight intensity, by
Heart luminance meter is measured the center brightness value of display terminal and is measured the corner of display terminal by corner brightness instrument
Brightness value, the corresponding relation set up between center brightness value and corner brightness value by matching is as follows:
Lc=FL (Lb)；
Wherein: LcCentered by brightness value, LbFor corner brightness value；
S2, arrange display terminal keep a specific backlight illumination, under at least one gray level information, pass through
Center brightness instrument is measured the center brightness value of display terminal and is measured the limit of display terminal by corner brightness instrument
Angular brightness value, it is thus achieved that the center relative transmittance under each gray level information and corner relative transmittance, by intending
Build the corresponding relation between vertical center relative transmittance and corner relative transmittance jointly:
Tc=FT (Tb)；
Wherein: TcCentered by relative transmittance；TbFor corner relative transmittance；
Wherein, described center relative transmittance by the center brightness value under each gray level information divided by described spy
Under fixed backlight illumination, the brightness value on white lime rank, center obtains, and described corner relative transmittance passes through each ash
Corner brightness value under the information of rank obtains divided by the brightness value on white lime rank, corner under described specific backlight illumination
?；
S3, by corner brightness instrument measure display terminal corner present intensity value, it is thus achieved that this display terminal
Center present intensity value:
Wherein: LcPresent intensity value centered by ', Lb' for corner present intensity value, Lb255For described specifically
The brightness value on white lime rank, corner under backlight illumination, M is the luminance factor factor under brightness specific grey-scale, i.e. institute
State under specific backlight illumination, the brightness value of specific grey-scale described in the brightness value on white lime rank, center and center
Ratio；
S4, the center present intensity value of this display terminal obtained is carried out with default display terminal brightness value
Compare, and be corrected.
The brightness correcting method of display terminal the most according to claim 1, it is characterised in that described
Step S1 specifically includes following steps:
S11, display terminal is set shows a specific grey-scale information；
S12, when backlight intensity is the most weak, by center brightness instrument measure display terminal center brightness value and
Measured the corner brightness value of display terminal by corner brightness instrument, obtain first group of backlight respective value；
S13, it is incremented by backlight intensity successively by a fixed value, and under each backlight intensity, passes through center respectively
The center brightness value of luminance meter measurement display terminal and the corner by corner brightness instrument measurement display terminal are bright
Angle value, obtains organizing backlight respective value more；
S14, by above-mentioned backlight respective value by matching set up between center brightness value and corner brightness value right
Should be related to as follows:
Lc=FL (Lb)；
Wherein: LcCentered by brightness value, LbFor corner brightness value.
The brightness correcting method of display terminal the most according to claim 2, it is characterised in that described
Step S13 also includes:
S131, when backlight intensity is the strongest, by center brightness instrument measure display terminal center brightness value and
Measured the corner brightness value of display terminal by corner brightness instrument, obtain last group backlight respective value.
The brightness correcting method of display terminal the most according to claim 1, it is characterised in that described
Step S2 specifically includes following steps:
S21, arrange display terminal keep a specific backlight illumination；
S22, when 0 GTG, measure the center brightness value of display terminal by center brightness instrument and pass through
The corner brightness value of display terminal measured by corner brightness instrument, obtains first group of GTG respective value, and obtains the 0th
The center relative transmittance of display terminal during GTG and corner relative transmittance；
S23, it is incremented by GTG successively by a fixed value, and is measured by center brightness instrument aobvious respectively at each GTG
Show the center brightness value of terminal and measured the corner brightness value of display terminal by corner brightness instrument, obtaining many groups
GTG respective value, and obtain center relative transmittance and the corner Relative Transmission of display terminal corresponding to each GTG
Rate；
S24, when being set up above-mentioned each GTG by matching between center relative transmittance and corner Relative Transmission
Relation:
Tc=FT (Tb)；
Wherein: TcCentered by relative transmittance；TbFor corner relative transmittance.
The brightness correcting method of display terminal the most according to claim 4, it is characterised in that described
Step S23 also includes:
S231, when GTG maximum, measure the center brightness value of display terminal by center brightness instrument and pass through
The corner brightness value of display terminal measured by corner brightness instrument, obtains last group GTG respective value, and obtains
The center relative transmittance of display terminal during later group GTG and corner relative transmittance.
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| CN107886040A (en) * | 2016-09-30 | 2018-04-06 | 北京小米移动软件有限公司 | Display device and its control method and control assembly and electronic equipment |
| CN107799081B (en) * | 2017-11-08 | 2019-10-22 | 武汉华星光电半导体显示技术有限公司 | Gamma corrects system and its bearing calibration |
| CN109994079B (en) * | 2018-01-02 | 2021-02-09 | 深圳市巨烽显示科技有限公司 | Display brightness correction method, device and system |
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| CN101110205A (en) * | 2006-12-27 | 2008-01-23 | 友达光电股份有限公司 | Color sequential LCD and gray scale brightness correction method for the same |
| CN101789221A (en) * | 2010-03-11 | 2010-07-28 | 彩虹集团公司 | Linear correction method of LED dynamic backlight |
| CN102005189A (en) * | 2009-09-01 | 2011-04-06 | 深圳市巨烽显示科技有限公司 | Method and device for calibrating luminance of liquid crystal display |
| CN102473381A (en) * | 2009-07-30 | 2012-05-23 | 夏普株式会社 | Image display device and image display method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101110205A (en) * | 2006-12-27 | 2008-01-23 | 友达光电股份有限公司 | Color sequential LCD and gray scale brightness correction method for the same |
| CN102473381A (en) * | 2009-07-30 | 2012-05-23 | 夏普株式会社 | Image display device and image display method |
| CN102005189A (en) * | 2009-09-01 | 2011-04-06 | 深圳市巨烽显示科技有限公司 | Method and device for calibrating luminance of liquid crystal display |
| CN101789221A (en) * | 2010-03-11 | 2010-07-28 | 彩虹集团公司 | Linear correction method of LED dynamic backlight |
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Address after: 518055 floor 15, building 6, Hengda fashion Huigu building (east area), Fulong Road, Henglang community, Dalang street, Longhua District, Shenzhen, Guangdong Patentee after: SHENZHEN BEACON DISPLAY TECHNOLOGY Co.,Ltd. Address before: 518057 Room 201, incubation building, China Academy of science and technology, Gaoxin South 1st Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BEACON DISPLAY TECHNOLOGY Co.,Ltd. |
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