CN107978268A - A kind of display screen white balance adjusting method - Google Patents
A kind of display screen white balance adjusting method Download PDFInfo
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- CN107978268A CN107978268A CN201711468835.XA CN201711468835A CN107978268A CN 107978268 A CN107978268 A CN 107978268A CN 201711468835 A CN201711468835 A CN 201711468835A CN 107978268 A CN107978268 A CN 107978268A
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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]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The invention discloses a kind of display screen white balance adjusting method, include the following steps：Step 1, by LED display be divided into 2nA unit, calculates the brightness value of red light all in each unit, all green lights and all blue lamps, and draws the proportionate relationship between the brightness value of red light all in the unit, all green lights and all blue lamps, if brightness value meets 1:6:3 ratio then no longer carries out subsequent step, and subsequent step is carried out if being unsatisfactory for；Brightness is unsatisfactory for 1 in step 2, acquisition LED display:6:The unit of 3 ratios, and the unit is divided into 2nWhether a block, the brightness value calculated between the brightness value that red light all on each block of the unit, all green lights and all blue lamps are obtained on each block meet 1:6:3 ratio.The present invention is by above-mentioned principle, and reliability is high, and accuracy is high, also eliminates the measurement that region is not required on LED display, and measurement efficiency greatly improves.
Description
Technical field
The present invention relates to display area, and in particular to a kind of display screen white balance adjusting method.
Background technology
White balance effect is one of most important index of display screen.Color science be taken in red green blue tricolor ratio be 1：
4.6：Pure white can be just shown when 0.16, occurs the deviation of white balance if actual ratio there are some deviations, one
As it is noted that whether white has partially blue, inclined yellow green phenomenon.The quality of white balance is mainly determined by the control system of display screen
Fixed, tube core also has an impact the reproducibility of color.
In the brightness of LED display is reconciled, if using 1：4.6：The ratio of 0.16 red green blue tricolor, it may appear that
Forward current deviation is too big, causes misalignment serious, it is not easy to the problem of adjusting, and the LED of LED display each color is just
Service life and the stability of display screen are determined to electric current.
Existing white balance adjusting method inefficiency, accuracy be not high.
The content of the invention
The present invention overcomes the deficiencies in the prior art, there is provided a kind of display screen white balance adjusting method, reliability is high, accurately
Degree is high, also eliminates the measurement that region is not required on LED display, and measurement efficiency greatly improves.
To solve above-mentioned technical problem, the present invention uses following technical scheme：A kind of display screen white balance adjusting method,
It is characterized in that：Include the following steps：
Step 1, by LED display be divided into 2nA unit, the value of n is positive integer, to all red in each unit
The brightness value of lamp, all green lights and all blue lamps is calculated, and draws red light all in the unit, all green
Proportionate relationship between lamp and the brightness value of all blue lamps, if brightness value meets 1:6:3 ratio then no longer carries out follow-up
Step, carries out subsequent step if being unsatisfactory for；
Brightness is unsatisfactory for 1 in step 2, acquisition LED display:6:The unit of 3 ratios, and the unit is divided into 2nIt is a
Block, the value of n is positive integer, calculates and red light all on each block of the unit, all green lights and institute are obtained on each block
Whether the brightness value between the brightness value of some blue lamps meets 1:6:3 ratio, if brightness is unsatisfactory for 1:6:The unit of 3 ratios,
Obtain red light, green light, the luminance parameter of blue lamp on the block on each pixel；
1 is unsatisfactory in step 3, calculation procedure 2:6:Red light on each pixel on the block of 3 ratios, green light, blue lamp it is bright
Whether angle value meets 1:6:3 ratio, carries out following steps if being unsatisfactory for；
Step 4, the current value for adjusting red light, and the brightness value of red light is obtained in real time, when the real-time luminosity value of red light is more than
The red light brightness value calculated in step 3, reduces the electric current for flowing through red light, when the real-time luminosity of red light is less than what is calculated in step 3
The current value of red light is flowed through in red light brightness value, increase, until red light real-time luminosity is equal to the red light brightness value calculated；
Step 5, the current value for adjusting green light, and the brightness value of green light is obtained in real time, when the real-time luminosity value of green light is more than
The green light brightness value calculated in step 3, reduces the electric current for flowing through green light, when the real-time luminosity of green light is less than what is calculated in step 3
The current value of green light is flowed through in green light brightness value, increase, until green light real-time luminosity is equal to the green light brightness value calculated；
Step 6, the current value for adjusting blue lamp, and the brightness value of blue lamp is obtained in real time, when the real-time luminosity value of blue lamp is more than
The blue lamp brightness value calculated in step 3, reduces the electric current for flowing through blue lamp, when the real-time luminosity of blue lamp is less than what is calculated in step 3
The current value of blue lamp is flowed through in blue lamp brightness value, increase, until blue lamp real-time luminosity is equal to the blue lamp brightness value calculated；
Step 7, the chromaticity coordinates for obtaining LED display；
Step 8, according to chromaticity coordinates value, the current value for flowing through red, green, blue lamp is adjusted, until the colourity of LED display reaches
White balance parameter set in advance.
LED display is divided into multiple units by this programme, and first unit is individually calculated, and is obtained in each unit
Whether the brightness value of all red light, all green lights and all blue lamps meets 1:6:3 ratio, so as to exclude
Qualified unit, without subsequently being measured it again, reduces detection range, then problematic unit is detected again,
Then problematic unit is carried out being divided into multiple pieces, gradually more accurate orientation problem region, then again to the region
Red-green-blue is according to 1:6:3 ratio, according to whole screen brightness value set in advance, required for calculating three kinds of colors of display screen
Brightness value, fast and effectively adjust the white balance of whole LED display, reliability is high, and accuracy is high, also eliminates LED and shows
The measurement in region is not required in display screen, measurement efficiency greatly improves.
LED display is divided into 2nUnit, the value of n is the natural number more than 5.
Each pixel of the LED display includes a red light, a green light, a blue lamp.
The wavelength of the red light is 625nm, the wavelength of green light is 525nm, the wavelength of blue lamp is 470nm.
The high-high brightness of the red light is 900mcd, the high-high brightness of green light is 1800mcd, blue lamp it is most light
Spend for 300mcd.
Compared with prior art, the beneficial effects of the invention are as follows：LED display is divided into multiple units by this programme, first right
Unit is individually calculated, and obtains the brightness of red light all in each unit, all green lights and all blue lamps
Whether value meets 1:6:3 ratio, so as to exclude the unit of qualification, without subsequently being measured it again, reduces
Detection range, is then again detected problematic unit, then carries out problematic unit to be divided into multiple pieces, gradually more
Accurate orientation problem region, then again to the red-green-blue in the region according to 1:6:3 ratio, according to set in advance
Whole screen brightness value, calculates three kinds of required brightness values of color of display screen, fast and effectively adjusts the white flat of whole LED display
Weighing apparatus, reliability is high, and accuracy is high, also eliminates the measurement that region is not required on LED display, and measurement efficiency greatly improves.
Embodiment
The present invention is further elaborated below, the embodiment of the present invention not limited to this.
Embodiment 1：
The present invention includes a kind of display screen white balance adjusting method, includes the following steps：
Step 1, by LED display be divided into 2nA unit, the value of n is positive integer, to all red in each unit
The brightness value of lamp, all green lights and all blue lamps is calculated, and draws red light all in the unit, all green
Proportionate relationship between lamp and the brightness value of all blue lamps, if brightness value meets 1:6:3 ratio then no longer carries out follow-up
Step, carries out subsequent step if being unsatisfactory for；
Brightness is unsatisfactory for 1 in step 2, acquisition LED display:6:The unit of 3 ratios, and the unit is divided into 2nIt is a
Block, the value of n is positive integer, calculates and red light all on each block of the unit, all green lights and institute are obtained on each block
Whether the brightness value between the brightness value of some blue lamps meets 1:6:3 ratio, if brightness is unsatisfactory for 1:6:The unit of 3 ratios,
Obtain red light, green light, the luminance parameter of blue lamp on the block on each pixel；
1 is unsatisfactory in step 3, calculation procedure 2:6:Red light on each pixel on the block of 3 ratios, green light, blue lamp it is bright
Whether angle value meets 1:6:3 ratio, carries out following steps if being unsatisfactory for；
Step 4, the current value for adjusting red light, and the brightness value of red light is obtained in real time, when the real-time luminosity value of red light is more than
The red light brightness value calculated in step 3, reduces the electric current for flowing through red light, when the real-time luminosity of red light is less than what is calculated in step 3
The current value of red light is flowed through in red light brightness value, increase, until red light real-time luminosity is equal to the red light brightness value calculated；
Step 5, the current value for adjusting green light, and the brightness value of green light is obtained in real time, when the real-time luminosity value of green light is more than
The green light brightness value calculated in step 3, reduces the electric current for flowing through green light, when the real-time luminosity of green light is less than what is calculated in step 3
The current value of green light is flowed through in green light brightness value, increase, until green light real-time luminosity is equal to the green light brightness value calculated；
Step 6, the current value for adjusting blue lamp, and the brightness value of blue lamp is obtained in real time, when the real-time luminosity value of blue lamp is more than
The blue lamp brightness value calculated in step 3, reduces the electric current for flowing through blue lamp, when the real-time luminosity of blue lamp is less than what is calculated in step 3
The current value of blue lamp is flowed through in blue lamp brightness value, increase, until blue lamp real-time luminosity is equal to the blue lamp brightness value calculated；
Step 7, the chromaticity coordinates for obtaining LED display；
Step 8, according to chromaticity coordinates value, the current value for flowing through red, green, blue lamp is adjusted, until the colourity of LED display reaches
White balance parameter set in advance.
LED display is divided into multiple units by this programme, and first unit is individually calculated, and is obtained in each unit
Whether the brightness value of all red light, all green lights and all blue lamps meets 1:6:3 ratio, so as to exclude
Qualified unit, without subsequently being measured it again, reduces detection range, then problematic unit is detected again,
Then problematic unit is carried out being divided into multiple pieces, gradually more accurate orientation problem region, then again to the region
Red-green-blue is according to 1:6:3 ratio, according to whole screen brightness value set in advance, required for calculating three kinds of colors of display screen
Brightness value, fast and effectively adjust the white balance of whole LED display, reliability is high, and accuracy is high, also eliminates LED and shows
The measurement in region is not required in display screen, measurement efficiency greatly improves.
This programme is finely adjusted three colors always according to chromaticity coordinates parameter so that brightness and white balance are more nearly pre-
The value first set, white light color are more nearly Natural color.
Embodiment 2：
The present embodiment is preferably as follows on the basis of embodiment 1：LED display is divided into 2nUnit, the value of n be more than
5 natural number.The value is under the premise of ensureing that measurement result is accurate, additionally it is possible to maximumlly improves efficiency.
Each pixel of the LED display includes a red light, a green light, a blue lamp.Adjust more square
Just it is simple.
The wavelength of the red light is 625nm, the wavelength of green light is 525nm, the wavelength of blue lamp is 470nm.
The high-high brightness of the red light is 900mcd, the high-high brightness of green light is 1800mcd, the high-high brightness of blue lamp is
300mcd。
The invention can be realized as described above.
Claims (5)
- A kind of 1. display screen white balance adjusting method, it is characterised in that：Include the following steps：Step 1, by LED display be divided into 2nA unit, the value of n is positive integer, to red light all in each unit, institute Some green lights and the brightness value of all blue lamps are calculated, and draw red light all in the unit, all green lights with And the proportionate relationship between the brightness value of all blue lamps, if brightness value meets 1:6:3 ratio then no longer carries out subsequent step, Subsequent step is carried out if being unsatisfactory for；Brightness is unsatisfactory for 1 in step 2, acquisition LED display:6:The unit of 3 ratios, and the unit is divided into 2nA block, n's Value is positive integer, calculates and red light all on each block of the unit, all green lights and all indigo plant are obtained on each block Whether the brightness value between the brightness value of lamp meets 1:6:3 ratio, if brightness is unsatisfactory for 1:6:The unit of 3 ratios, obtaining should Red light, green light, the luminance parameter of blue lamp on block on each pixel；1 is unsatisfactory in step 3, calculation procedure 2:6:Red light, green light, the brightness value of blue lamp on each pixel on the block of 3 ratios Whether 1 is met:6:3 ratio, carries out following steps if being unsatisfactory for；Step 4, the current value for adjusting red light, and the brightness value of red light is obtained in real time, when the real-time luminosity value of red light is more than step 3 The red light brightness value of middle calculating, reduces the electric current for flowing through red light, when the real-time luminosity of red light is less than the when red calculated in step 3 The current value of red light is flowed through in angle value, increase, until red light real-time luminosity is equal to the red light brightness value calculated；Step 5, the current value for adjusting green light, and the brightness value of green light is obtained in real time, when the real-time luminosity value of green light is more than step 3 The green light brightness value of middle calculating, reduces the electric current for flowing through green light, when the real-time luminosity of green light is less than the green light calculated in step 3 The current value of green light is flowed through in angle value, increase, until green light real-time luminosity is equal to the green light brightness value calculated；Step 6, the current value for adjusting blue lamp, and the brightness value of blue lamp is obtained in real time, when the real-time luminosity value of blue lamp is more than step 3 The blue lamp brightness value of middle calculating, reduces the electric current for flowing through blue lamp, when the real-time luminosity of blue lamp is bright less than the blue lamp calculated in step 3 The current value of blue lamp is flowed through in angle value, increase, until blue lamp real-time luminosity is equal to the blue lamp brightness value calculated；Step 7, the chromaticity coordinates for obtaining LED display；Step 8, according to chromaticity coordinates value, the current value for flowing through red, green, blue lamp is adjusted, until the colourity of LED display reaches advance The white balance parameter of setting.
- A kind of 2. display screen white balance adjusting method according to claim 1, it is characterised in that：LED display is divided into 2n Unit, the value of n is the natural number more than 5.
- A kind of 3. display screen white balance adjusting method according to claim 1, it is characterised in that：The LED display Each pixel includes a red light, a green light, a blue lamp.
- A kind of 4. display screen white balance adjusting method according to claim 1, it is characterised in that：The wavelength of the red light is 625nm, the wavelength of green light are 525nm, the wavelength of blue lamp is 470nm.
- A kind of 5. display screen white balance adjusting method according to claim 1, it is characterised in that：The red light it is most light The high-high brightness spent for 900mcd, green light is 1800mcd, the high-high brightness of blue lamp is 300mcd.
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| CN201711468835.XA CN107978268A (en) | 2017-12-29 | 2017-12-29 | A kind of display screen white balance adjusting method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667418A (en) * | 2009-09-25 | 2010-03-10 | 深圳丹邦投资集团有限公司 | Method for displaying luminance compensation of display screen and system thereof |
| CN103500566A (en) * | 2013-09-29 | 2014-01-08 | 京东方科技集团股份有限公司 | Display equipment and device and method for improving uneven display brightness |
| CN104392696A (en) * | 2014-12-01 | 2015-03-04 | 苏州立瓷电子技术有限公司 | White balance adjusting method of LED display screen |
| CN105825797A (en) * | 2016-03-31 | 2016-08-03 | 广东欧珀移动通信有限公司 | Display screen detection method and apparatus, and terminal |
-
2017
- 2017-12-29 CN CN201711468835.XA patent/CN107978268A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667418A (en) * | 2009-09-25 | 2010-03-10 | 深圳丹邦投资集团有限公司 | Method for displaying luminance compensation of display screen and system thereof |
| CN103500566A (en) * | 2013-09-29 | 2014-01-08 | 京东方科技集团股份有限公司 | Display equipment and device and method for improving uneven display brightness |
| CN104392696A (en) * | 2014-12-01 | 2015-03-04 | 苏州立瓷电子技术有限公司 | White balance adjusting method of LED display screen |
| CN105825797A (en) * | 2016-03-31 | 2016-08-03 | 广东欧珀移动通信有限公司 | Display screen detection method and apparatus, and terminal |
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Application publication date: 20180501 |
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