Key points for LED display purchase
LED (Light-Emitting-Diode in Chinese) is a semiconductor that can convert electrical energy into light energy. It changes the principle of incandescent tungsten filament emission and energy-saving lamp trichromatic powder emission, and uses electric field emission. According to analysis, the characteristics of LED are very obvious, long life, high luminous efficiency, low radiation and low power consumption. The spectrum of white LEDs is almost entirely concentrated in the visible light band, and its luminous efficiency can exceed 150 lm/W (2010). Here to say that in the use of LED display, need to pay attention to several key points of LED.
1. Grayscale
Grayscale as a dual-color and full-color display is an important indicator. The current market is flooded with many 16- and 64-gradation display screens posing as 256 shades of gray. Its control cost is only one-fifth of the control of 256 gray scales. The easiest way is to play a VCD with a more intense sports scene to see if it can be seen clearly on the LED display.
2. Buy the best you want to buy is the best
All purchasing power comes from needs. Meet the needs and have some advancement. Blind pursuit will waste a lot of money to purchase functions that you don't need.
3. Practicality
The application is fundamental, as the application of consulting, software upgrades, hardware maintenance, maintenance and repairs, ultimately, the support of manufacturers, clear their own needs, investment budget and the expected best results. The LED used in LED display is mainly to increase vigilance from several aspects such as LED lifetime, LED national standard, cost performance, LED gray scale, LED practicality, etc., to ensure that the LED used in the LED display to achieve the desired effect.
