CN103489411A - Display-screen color maintenance method and system - Google Patents
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- CN103489411A CN103489411A CN201310439938.9A CN201310439938A CN103489411A CN 103489411 A CN103489411 A CN 103489411A CN 201310439938 A CN201310439938 A CN 201310439938A CN 103489411 A CN103489411 A CN 103489411A
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Abstract
The invention discloses a display-screen color maintenance method and system. The method comprises the following steps that the current tristimulus values of all kinds of monochromes in a display unit are acquired; the current tristimulus values of each kind of monochrome are compared with reference tristimulus values, and the current value of a three-primary color LED lamp corresponding to the current tristimulus values of each kind of monochrome is adjusted according to the comparison result. Because the current of the three-primary color LED lamp corresponding to the current tristimulus values of each kind of monochrome is adjusted and the current tristimulus values of each kind of monochrome are adjusted to equal the reference values, each kind of monochrome of the display unit can be kept in the reference level, and better color keeping effect can be acquired.
Description
Technical field
The present invention relates to LED display technique field, the color that particularly relates to a kind of display screen maintains method and system.
Background technology
Along with the development of visual information interchange technology, the range of application of display screen is also more and more extensive, and the user is also more and more higher to the requirement of its display effect, requires its display effect to keep for a long time.The display effect of display screen directly depends on the rear-projection ray machine, and the display effect of rear-projection ray machine is mainly determined by adopted light source.Possess at present that environmental protection, color saturation are high, the LED of the advantage such as long service life, volume are little is the light source be most widely used in the rear-projection ray machine, therefore, the display effect of display screen finally depends on brightness and the colourity as the LED of rear-projection ray machine light source.
But, in rear-projection ray machine operational process, LED as light source inevitably there will be brightness decay, colourity drift, and along with the display parameter such as the brightness of the variation LED of environment temperature and colourity also can change, above-mentioned factor makes the rear-projection ray machine can't continue to maintain Benchmark brightness value and chromaticity coordinates, and finally causes display brightness and color and the Benchmark brightness of display screen and color is inconsistent, the display effect variation.
Summary of the invention
Based on this, be necessary to have brightness decay, colourity drift for the above-mentioned LED as rear-projection ray machine light source, cause display brightness and color and Benchmark brightness and the inconsistent problem of color of display screen, provide a kind of color of display screen to maintain method and system.
A kind of color of display screen maintains method, comprises the following steps:
Obtain the current tristimulus values of the various monochromes of display unit;
The current tristimulus values of more every kind of monochrome and benchmark tristimulus values respectively, and according to the comparative result adjustment current value with the corresponding primitive colours LED lamp of current tristimulus values of every kind of monochrome.
A kind of color of display screen maintains system, comprising:
Acquisition module, for obtaining the current tristimulus values of the various monochromes of display unit;
Adjusting module, for current tristimulus values and the benchmark tristimulus values of more every kind of monochrome respectively, and according to the comparative result adjustment current value with the corresponding primitive colours LED lamp of current tristimulus values of every kind of monochrome.
The color of above-described display screen maintains method and system, by adjusting the electric current of the primitive colours LED lamp corresponding with the current tristimulus values of various monochromes, the current tristimulus values of each monochrome is adjusted to reference value, can make every kind of monochrome of display unit be maintained at datum-plane, obtain better color and keep effect.
The accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the color of display screen of the present invention maintains method the first embodiment;
Fig. 2 is the schematic flow sheet that the color of display screen of the present invention maintains method the second embodiment;
Fig. 3 is the structural representation that the color of display screen of the present invention maintains system the first embodiment.
Embodiment
Refer to Fig. 1, Fig. 1 is the schematic flow sheet that the color of display screen of the present invention maintains method the first embodiment.
The color of the described display screen of present embodiment maintains method and comprises the following steps:
The color of the described display screen of present embodiment maintains method, by adjusting the electric current of the primitive colours LED lamp corresponding with the current tristimulus values of various monochromes, the current tristimulus values of each monochrome is adjusted to reference value, can make every kind of monochrome of display unit be maintained at datum-plane, obtain better color and keep effect.
Wherein, for step 101, described display unit comprises the predeterminable area of rear-projection ray machine, display screen etc., and described display screen is preferably mosaic display screen.Described monochrome is any one in W (white), R (red), G (green), B (blue), Y (yellow), C (cyan) and this seven look of M (magenta).
Preferably, can directly gather the current tristimulus values of the various monochromes of display unit, also can first obtain current brightness value and the current color coordinate of the various monochromes of display unit, then by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes.
In a specific embodiment, the described step of obtaining the current tristimulus values of the various monochromes of display unit comprises the following steps:
The current brightness value of the various monochromes of Real-time Obtaining rear-projection ray machine and current color coordinate, and, by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes, wherein, described rear-projection ray machine is described display unit.Perhaps,
Cycle is obtained current brightness value and the current color coordinate of various monochromes in the current display frame of display screen, and by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes.
In the present embodiment, can comprise the color watch-dog, drive accordingly the module of collecting circuit board and software to gather described current brightness value and described current color coordinate by one current brightness value and current color coordinate that can the Obtaining Accurate display unit.
Above-mentioned module can be obtained current brightness value and current color coordinate in the following manner: the current brightness value and the current color coordinate that one, in the interior lighting system of rear-projection ray machine or imaging optical path, obtain the rear-projection ray machine; Two, obtain current brightness value and the current color coordinate of rear-projection ray machine in the external circuits of rear-projection ray machine and display screen; Three, obtain current brightness value and the current color coordinate of various monochromes in the current picture of display screen before display screen.
Further, according to display unit and obtain manner, can preset the cycle of obtaining and adjust the display screen color.If obtain by the first two mode, can not affect the normal operation of display screen, but Real-time Obtaining brightness value and chromaticity coordinates and the real-time color of adjusting display screen are realized the real-time maintenance of display effect.If by the third mode, in order not affect normal operation and the demonstration of display screen, can only be by the length periodically set a bit, at set intervals external device is positioned over to the display screen line parameter that advances and obtains and the color adjustment.
In other embodiments of the present invention, those skilled in the art also can according to actual needs, adopt other conventional techniques means of this area to carry out pointedly parameter acquiring and color adjustment.Obtaining the current brightness value of various monochromes of display unit and the cycle of current color coordinate can be set according to actual conditions, can be set as the time needed arbitrarily, can be ten minutes, one hour, half a day or weekly, can set according to the requirement of display effect.Cycle is shorter, and color keeps effect relatively better.
In another embodiment, before the step of carrying out the described current tristimulus values of obtaining the various monochromes of display unit, further comprising the steps of:
Obtain Benchmark brightness value and the reference color coordinate of various monochromes, and by the Benchmark brightness value of the various monochromes obtained and the benchmark tristimulus values that the reference color coordinate conversion is various monochromes.
For step 102, preferably, the initial tristimulus values that the benchmark tristimulus values of every kind of monochrome is each monochrome, after the first installation of display screen, calibration, according to its calibration and by the display effect after checking and accepting, preserve original intensity value and the initial chromaticity coordinates of every kind of monochrome, and the initial chromaticity coordinates of original intensity value electric charge of preservation is converted to the initial tristimulus values of each monochrome, follow-up color keeps this being worth as benchmark.In actual motion, also can reset according to actual conditions the benchmark tristimulus values of various monochromes.
Preferably, three kinds (R look LED lamp, G look LED lamp and B look LED lamps) in the primitive colours LED lamp of current tristimulus values and display unit are corresponding one by one.
In one embodiment, the current tristimulus values of described more every kind of monochrome respectively and benchmark tristimulus values, and comprise the following steps with the step of the current value of the corresponding primitive colours LED lamp of described current tristimulus values according to the comparative result adjustment:
Step 1021, calculate respectively the difference of each values and corresponding values in every kind of monochromatic benchmark tristimulus values in the current tristimulus values of every kind of monochrome.
Step 1022, the described difference of a values of a kind of monochrome of every calculating, judge the residing numerical range of described difference.
Step 1023, the current value of corresponding LED lamp with the step by step modulating corresponding with described numerical range and described values, wherein, three kinds of different LED lamps in the corresponding primitive colours LED lamp of current tristimulus values.
For step 1022 and step 1023, preferably, the stepping of adjusting the current value of different LED lamp can be different, can reduce the adjustment number of times like this, and raising is regulated the speed.Red LED lamp can corresponding X dimension values, the values that green LED lamp can corresponding Y dimension, the values that the blue led lamp can corresponding Z dimension.
In other embodiments, except the above-mentioned mode of the current value of LED lamp being adjusted with stepping, other modes that those skilled in the art can also habitually practise by this area, the current value of the primitive colours LED lamp corresponding with tristimulus values according to the comparative result adjustment, regulate the speed or reduce the adjustment number of times with quickening, and then reduce and adjust to the consistent required time of color, reduce system loss.Other habitual modes of this area comprise slope adjustment, cumulative adjustment etc.Calculate the current value variable quantity corresponding to variable quantity of required tristimulus values when slope is adjusted according to current current value and near the difference of current value, to determine, be adjusted to the required LED current value of benchmark tristimulus values.
In another embodiment, the current tristimulus values of described more every kind of monochrome respectively and benchmark tristimulus values, and further comprising the steps of with the step of the current value of the corresponding primitive colours LED lamp of current tristimulus values of every kind of monochrome according to the comparative result adjustment:
Whether the current tristimulus values that judges respectively every kind of monochrome is in threshold range, if, stop adjusting the current value of the primitive colours LED lamp corresponding with described current tristimulus values, if not, the continuation current tristimulus values of more every kind of monochrome and the benchmark tristimulus values of every kind of monochrome respectively.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet that the color of display screen of the present invention maintains method the second embodiment.
The key distinction that the color of the described display screen of present embodiment maintains method and the first embodiment is: the current tristimulus values of described more every kind of monochrome respectively and benchmark tristimulus values, and can specifically comprise the following steps with the step of the current value of the corresponding primitive colours LED lamp of described current tristimulus values according to the comparative result adjustment:
The color of the described display screen of present embodiment maintains method, when adjusting the electric current of corresponding LED lamp, and the lowest high-current value of the LED lamp that can adjust in real time, and then the display effect of raising display screen.
Wherein, for step 202 and step 203, default stepping can be 1 current value unit, can be also other values.
Further, after step 203, the current tristimulus values of described more every kind of monochrome respectively and the benchmark tristimulus values of every kind of monochrome, and further comprising the steps of with the step of the current value of the corresponding primitive colours LED lamp of described current tristimulus values according to the comparative result adjustment:
Step 204, statistics with preset stepping reduce the primitive colours LED lamp corresponding with described values current value the downward number of times and to preset, stepping increases and the rise number of times of the current value of the primitive colours LED lamp that described values is corresponding, if described downward number of times and described rise number of times all are greater than 5 times, stop adjusting the current value of the primitive colours LED lamp corresponding with described values.
The aforesaid operations step, after the current value of repeatedly adjusting the LED lamp, current tristimulus values does not meet when pre-conditioned, meets while being greater than preset times 5 adjusting number of times, automatically exits set-up procedure, can effectively stop invalid adjustment process, to reduce system loss.
Refer to Fig. 3, Fig. 3 is the structural representation that the color of display screen of the present invention maintains system the first embodiment.
The color of the described display screen of present embodiment maintains system and comprises acquisition module 100 and adjusting module 200, wherein:
Adjusting module 200, for current tristimulus values and the benchmark tristimulus values of more every kind of monochrome respectively, and according to the comparative result adjustment current value with the corresponding primitive colours LED lamp of current tristimulus values of every kind of monochrome.
The color of the described display screen of present embodiment maintains system, by adjusting the electric current of the primitive colours LED lamp corresponding with the current tristimulus values of various monochromes, the current tristimulus values of each monochrome is adjusted to reference value, can make every kind of monochrome of display unit be maintained at datum-plane, obtain better color and keep effect.
Wherein, for acquisition module 100, described display unit comprises the predeterminable area of rear-projection ray machine, display screen etc., and described display screen is preferably mosaic display screen.Described monochrome is any one in W (white), R (red), G (green), B (blue), Y (yellow), C (cyan) and this seven look of M (magenta).
Preferably, acquisition module 100 can directly gather the current tristimulus values of the various monochromes of display unit, also can first obtain current brightness value and the current color coordinate of the various monochromes of display unit, then by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes.
In a specific embodiment, acquisition module 100 can be used for:
The current brightness value of the various monochromes of Real-time Obtaining rear-projection ray machine and current color coordinate, and, by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes, wherein, described rear-projection ray machine is described display unit.Perhaps,
Cycle is obtained current brightness value and the current color coordinate of various monochromes in the current display frame of display screen, and by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes.
In the present embodiment, acquisition module 100 can comprise the color watch-dog, drive collecting circuit board and software accordingly, can gather described current brightness value and described current color coordinate, with current brightness value and the current color coordinate of Obtaining Accurate display unit.
Above-mentioned acquisition module 100 can obtain current brightness value and current color coordinate in the following manner: the current brightness value and the current color coordinate that one, in the interior lighting system of rear-projection ray machine or imaging optical path, obtain the rear-projection ray machine; Two, obtain current brightness value and the current color coordinate of rear-projection ray machine in the external circuits of rear-projection ray machine and display screen; Three, obtain current brightness value and the current color coordinate of various monochromes in the current picture of display screen before display screen.
Further, according to display unit and obtain manner, can preset the cycle of obtaining and adjust the display screen color.If obtain by the first two mode, can not affect the normal operation of display screen, but Real-time Obtaining brightness value and chromaticity coordinates and the real-time color of adjusting display screen are realized the real-time maintenance of display effect.If by the third mode, in order not affect normal operation and the demonstration of display screen, can only be by the length periodically set a bit, at set intervals external device is positioned over to the display screen line parameter that advances and obtains and the color adjustment.
In other embodiments of the present invention, those skilled in the art also can according to actual needs, adopt other conventional techniques means of this area to carry out pointedly parameter acquiring and color adjustment.Obtaining the current brightness value of various monochromes of display unit and the cycle of current color coordinate can be set according to actual conditions, can be set as the time needed arbitrarily, can be ten minutes, one hour, half a day or weekly, can set according to the requirement of display effect.Cycle is shorter, and color keeps effect relatively better.
In another embodiment, acquisition module 100 is before obtaining the current tristimulus values of the various monochromes of display unit, also can be used for obtaining Benchmark brightness value and the reference color coordinate of various monochromes, and by the Benchmark brightness value of the various monochromes obtained and the benchmark tristimulus values that the reference color coordinate conversion is various monochromes.
For adjusting module 200, preferably, the initial tristimulus values that the benchmark tristimulus values of every kind of monochrome is each monochrome, after the first installation of display screen, calibration, according to its calibration and by the display effect after checking and accepting, preserve original intensity value and the initial chromaticity coordinates of every kind of monochrome, and the initial chromaticity coordinates of original intensity value electric charge of preservation is converted to the initial tristimulus values of each monochrome, follow-up color keeps this being worth as benchmark.In actual motion, also can reset according to actual conditions the benchmark tristimulus values of various monochromes.
Preferably, three kinds (R look LED lamp, G look LED lamp and B look LED lamps) in the primitive colours LED lamp of current tristimulus values and display unit are corresponding one by one.
In one embodiment, adjusting module 200 also for:
Calculate respectively the difference of each values and corresponding values in every kind of monochromatic benchmark tristimulus values in the current tristimulus values of every kind of monochrome.
The described difference of a values of a kind of monochrome of every calculating, judge the residing numerical range of described difference.
The current value of corresponding LED lamp with the step by step modulating corresponding with described numerical range and described values, wherein, three kinds of different LED lamps in the corresponding primitive colours LED lamp of current tristimulus values.
For adjusting module 200, preferably, the stepping of adjusting the current value of different LED lamp can be different, can reduce the adjustment number of times like this, and raising is regulated the speed.Red LED lamp can corresponding X dimension values, the values that green LED lamp can corresponding Y dimension, the values that the blue led lamp can corresponding Z dimension.
In other embodiments, except the above-mentioned mode of the current value of LED lamp being adjusted with stepping, other modes that those skilled in the art can also habitually practise by this area, the current value of the primitive colours LED lamp corresponding with tristimulus values according to the comparative result adjustment, regulate the speed or reduce the adjustment number of times with quickening, and then reduce and adjust to the consistent required time of color, reduce system loss.Other habitual modes of this area comprise slope adjustment, cumulative adjustment etc.Calculate the current value variable quantity corresponding to variable quantity of required tristimulus values when slope is adjusted according to current current value and near the difference of current value, to determine, be adjusted to the required LED current value of benchmark tristimulus values.
In another embodiment, described adjusting module 200 also can be used for judging respectively whether the current tristimulus values of every kind of monochrome is in threshold range, if, stop adjusting the current value of the primitive colours LED lamp corresponding with described current tristimulus values, if not, continue the current tristimulus values of more every kind of monochrome and the benchmark tristimulus values of every kind of monochrome respectively.
The following stated is that the color of display screen of the present invention maintains system the second embodiment.
The key distinction that the color of the described display screen of present embodiment maintains system and the first embodiment is: adjusting module 200 also can be further used for:
Whether the ratio that judges respectively corresponding values in the benchmark tristimulus values of each values and every kind of monochrome in the current tristimulus values of every kind of monochrome is greater than 1.
If be greater than 1, reduce the current value of the primitive colours LED lamp corresponding with described values to preset stepping, wherein, three kinds of different LED lamps in the corresponding primitive colours LED lamp of three valuess in described current tristimulus values.
If be less than 1, judge whether the current current value of the primitive colours LED lamp corresponding with described values is less than the lowest high-current value of described LED lamp, if be less than, increase the current value of the primitive colours LED lamp corresponding with described values to preset stepping, otherwise, the lowest high-current value using the current current value of described LED lamp as described LED lamp.
The color of the described display screen of present embodiment maintains system, when adjusting the electric current of corresponding LED lamp, and the lowest high-current value of the LED lamp that can adjust in real time, and then the display effect of raising display screen.
Wherein, for adjusting module 200, default stepping can be 1 current value unit, can be also other values.
Further, adjusting module 200 also can be used for statistics with preset stepping reduce the primitive colours LED lamp corresponding with described values current value the downward number of times and to preset, stepping increases and the rise number of times of the current value of the primitive colours LED lamp that described values is corresponding, if described downward number of times and described rise number of times all are greater than 5 times, stop adjusting the current value of the primitive colours LED lamp corresponding with described values.
Aforesaid operations, after the current value of repeatedly adjusting the LED lamp, current tristimulus values does not meet when pre-conditioned, meets while being greater than preset times 5 adjusting number of times, automatically exits set-up procedure, can effectively stop invalid adjustment process, to reduce system loss.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the color of a display screen maintains method, it is characterized in that, comprises the following steps:
Obtain the current tristimulus values of the various monochromes of display unit;
The current tristimulus values of more every kind of monochrome and benchmark tristimulus values respectively, and according to the comparative result adjustment current value with the corresponding primitive colours LED lamp of current tristimulus values of every kind of monochrome.
2. the color of display screen according to claim 1 maintains method, it is characterized in that, the described step of obtaining the current tristimulus values of the various monochromes of display unit comprises the following steps:
The current brightness value of the various monochromes of Real-time Obtaining rear-projection ray machine and current color coordinate, and, by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes, wherein, described rear-projection ray machine is described display unit.
3. the color of display screen according to claim 1 maintains method, it is characterized in that, the described step of obtaining the current tristimulus values of the various monochromes of display unit comprises the following steps:
Cycle is obtained current brightness value and the current color coordinate of various monochromes in the current display frame of display screen, and by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes.
4. the color of display screen according to claim 1 maintains method, it is characterized in that, before the step of carrying out the described current tristimulus values of obtaining the various monochromes of display unit, further comprising the steps of:
Obtain Benchmark brightness value and the reference color coordinate of various monochromes, and by the Benchmark brightness value of the various monochromes obtained and the benchmark tristimulus values that the reference color coordinate conversion is various monochromes.
5. maintain method according to the color of the described display screen of any one in claim 1 to 4, it is characterized in that, the current tristimulus values of described more every kind of monochrome respectively and benchmark tristimulus values, and comprise the following steps with the step of the current value of the corresponding primitive colours LED lamp of described current tristimulus values according to the comparative result adjustment:
Whether the ratio that judges respectively corresponding values in the benchmark tristimulus values of each values and every kind of monochrome in the current tristimulus values of every kind of monochrome is greater than 1;
If be greater than 1, reduce the current value of the primitive colours LED lamp corresponding with described values to preset stepping, wherein, three kinds of different LED lamps in the corresponding primitive colours LED lamp of three valuess in described current tristimulus values;
If be less than 1, judge whether the current current value of the primitive colours LED lamp corresponding with described values is less than the lowest high-current value of described LED lamp, if be less than, increase the current value of the primitive colours LED lamp corresponding with described values to preset stepping, otherwise, the lowest high-current value using the current current value of described LED lamp as described LED lamp.
6. the color of display screen according to claim 5 maintains method, it is characterized in that, the current tristimulus values of described more every kind of monochrome respectively and the benchmark tristimulus values of every kind of monochrome, and further comprising the steps of with the step of the current value of the corresponding primitive colours LED lamp of described current tristimulus values according to the comparative result adjustment:
Statistics with preset stepping reduce the primitive colours LED lamp corresponding with described values current value the downward number of times and to preset, stepping increases and the rise number of times of the current value of the primitive colours LED lamp that described values is corresponding, if described downward number of times and described rise number of times all are greater than 5 times, stop adjusting the current value of the primitive colours LED lamp corresponding with described values.
7. the color of a display screen maintains system, it is characterized in that, comprising:
Acquisition module, for obtaining the current tristimulus values of the various monochromes of display unit;
Adjusting module, for current tristimulus values and the benchmark tristimulus values of more every kind of monochrome respectively, and according to the comparative result adjustment current value with the corresponding primitive colours LED lamp of current tristimulus values of every kind of monochrome.
8. the color of display screen according to claim 7 maintains system, it is characterized in that, described acquisition module is also for current brightness value and the current color coordinate of the various monochromes of Real-time Obtaining rear-projection ray machine, and by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes, wherein, described rear-projection ray machine is described display unit.
9. the color of display screen according to claim 7 maintains system, it is characterized in that, described acquisition module also obtains current brightness value and the current color coordinate of the various monochromes of the current display frame of display screen for the cycle, and by the current brightness value of the various monochromes obtained and the current tristimulus values that the current color coordinate conversion is various monochromes, wherein, described display screen is described display unit.
10. maintain system according to the color of the described display screen of any one in claim 7 to 9, it is characterized in that, described adjusting module also for:
Whether the ratio that judges respectively corresponding values in the benchmark tristimulus values of each values and every kind of monochrome in the current tristimulus values of every kind of monochrome is greater than 1;
If be greater than 1, reduce the current value of the primitive colours LED lamp corresponding with described values to preset stepping, wherein, three kinds of different LED lamps in the corresponding primitive colours LED lamp of three valuess in described current tristimulus values;
If be less than 1, judge whether the current current value of the primitive colours LED lamp corresponding with described values is less than the lowest high-current value of described LED lamp, if be less than, increase the current value of the primitive colours LED lamp corresponding with described values to preset stepping, otherwise, the lowest high-current value using the current current value of described LED lamp as described LED lamp.
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| CN105336286A (en) * | 2014-07-29 | 2016-02-17 | 杭州海康威视数字技术股份有限公司 | Spliced screen color adjusting method and device |
| CN106782347A (en) * | 2016-12-30 | 2017-05-31 | 深圳众思科技有限公司 | Correct the method and device of LED backlight display white point |
| CN107945730A (en) * | 2017-11-22 | 2018-04-20 | 田国辉 | A kind of control method of the LED standard screen based on two-level current |
| CN108417175A (en) * | 2018-02-24 | 2018-08-17 | 深圳市晶台股份有限公司 | A kind of LED display realizes the display methods of adjustable colour gamut |
| CN115424577A (en) * | 2022-11-03 | 2022-12-02 | 永林电子股份有限公司 | LED uniform light-emitting control method and system based on full-color intelligent controller |
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