How to adjust the brightness and color of LED folding screen?
Nowadays, LED folding screen is the "favorite" of advertising, it has excellent brightness and color performance, as well as the integrity of the screen without splicing, which can provide us with richer and more ornamental advertising display content, and thus is widely used in television broadcasting, shopping malls, hotels, thank you meeting, product launch! ...... are widely used in TV broadcasting, shopping malls, hotels, appreciation parties, product launches and other fields. However, some cities have also appeared due to the LED folding screen brightness is too high and affect the surrounding residents life, traffic and other aspects of the problem, therefore, we need to adjust the brightness and color of the LED folding screen. So do you know how to adjustLED Folding Screenof brightness and color? The following Vishay Technology editorial is for you:
How to adjust the brightness and color of LED folding screen:
1. Color adjustment:
High-definition LED folding screen is displayed in accordance with the principle of the three primary colors of light. Determine the red, green, blue one of the colors for the benchmark is mainly based on the choice of products red, green, blue color brightness is different depending on the general situation as the brightness of the benchmark is the ratio of brightness of a low, when the benchmark of a has reached the maximum brightness, for the two-color LED folding screen for the need to adjust the other color, for the full-color LED folding screen, we need to adjust the color of the other two kinds of LEDs and so on. For full-color LED folding screen, it is necessary to adjust the color of the other two LEDs.
2. Adjustment of brightness:
LED folding screen for brightness adjustment, on the one hand, need to modulate the pulse width, using the human eye can feel the frequency of change, using pulse width modulation method to achieve gray scale control, that is, periodically change the width of the light pulse. Pulse width modulation is more suitable for digital control, has been widely used, the common method is to adopt the microcomputer, at present almost all of the LED folding screen is to adopt pulse width modulation to control the gray level. On the other hand, the current needs to be adjusted. Ordinary LED tube allows continuous task current in about 20 mA, by changing the current flowing through the LED, in addition to the red LED saturation phenomenon, the rest of the LED brightness is basically proportional to the current flowing through.
3. Selection of base color wavelength:
LED folding screen in all walks of life has a very wide range of applications, and in different applications on the LED base color wavelength has different requirements for the LED base color wavelength of some of the choices in order to achieve good visual effects, some are in line with people's habits, and some of them are the industry standards, national standards and even international standards. Thus, the choice of the base color wavelength is one of the important links in the adjustment of the brightness and color of the LED folding screen.
In summary, is the LED folding screen brightness and color adjustment method. People's requirements for LED folding screen is getting higher and higher, the color coordinates subdivision and screening has been unable to meet the people's critical eyes, and we can make the chromaticity uniformity improved by doing a good job of adjusting the brightness and color of the LED folding screen, so as to meet the needs of users.
