Speaking of led big screen, everyone may be familiar with, the progress of led large screen production has also promoted the city's cultural civilization. Led large-screen display is highly respected and loved by people.
Led was born in 1923, and Rousseff (lossen.ow) discovered a pn junction with impurities when studying semiconductor sic, and light was emitted after power-on, thus developing a light-emitting diode (LED). But after that, the application of led has been ignored. With the rapid development of the electronics industry, display technology has developed rapidly in the 1960s. People have developed various display technologies such as pdp laser display plasma display panel, led liquid crystal display, LED display, and the like. As semiconductor fabrication and processing processes have matured and improved, LEDs have become increasingly dominant in solid-state displays.
The reason why led is widely recognized and rapidly developed is because it has many advantages. For example: high brightness, low operating voltage, low power consumption, easy integration, simple drive, long life, impact resistance and stable performance, its development prospects are extremely broad. It is currently developing towards higher brightness, higher weather resistance and luminous density, uniformity of illumination, and full color. With the development, people need a large-screen display device, so there is a projector, but its brightness can not be used under natural light, so there is a led display (screen), which has a large viewing angle, high brightness, colorful features .