The physical principles and engineering secrets behind LED displays

LED displays are widely used in reality, but their principles are not well known. A workstation on a computer or network controls the effect of an electronic display, which involves writing a program according to user needs and extracting relevant data. It can also manually produce the effect of an LED screen. The pixels on the screen correspond to the pixels on the screen controller.

The electronic display screen can adjust brightness, contrast, color, etc. manually or automatically to adapt to different environments. The video signal processing control system is one of the key components of the LED display screen and is responsible for image processing, including grayscale adjustment, brightness adjustment, image noise reduction, motion compensation and other functions.

The video controller transmits the processed display information to the communication module for long-distance transmission to the display screen. The communication system connects the control computer and the display screen through twisted pairs to effectively transmit the display content.

LED display screen is a new type of electronic device, which is arranged by light-emitting diodes. Its high brightness, wide viewing angle, and long life make it widely used in outdoor advertising screens and other products.

LED lighting has gradually replaced traditional incandescent lamps, saving a lot of electricity. Recently, the light output and practicality of white LEDs have improved significantly.

The development of LEDs has gone through several stages, from GaAsP emitting red light in the early 1960s to the introduction of new elements in the mid-1970s to improve light efficiency. In the early 1980s, GaAlAs LED light sources appeared, which greatly improved the light efficiency of red LEDs. In the early 1990s, the development of new materials further improved the light efficiency of LEDs. By 2000, the light efficiency of LEDs at various wavelengths had been significantly improved.

The development of the LED industry has attracted the participation of many manufacturers around the world. Nichia Chemical is one of the important players. They use advanced technology to develop products such as high-brightness LEDs and blue-light LEDs. Although Nichia has adopted a market-exclusive strategy, this has not prevented other manufacturers from competing. At present, the R&D and production of LED products has become a global industry.