What is the meaning of TV led two line screen
Author:Nie Yao Time:2021-06-10 08:25 Browse(204)
1. After lighting up the screen, there will be two colored lines on the screen, which will never be controlled or repaired.
1. After lighting up the screen, there will be two colored lines on the screen, which will never be controlled or repaired.2. LED screen is a new type of imaging electronic equipment, which is made of light-emitting diodes arranged in order. Because of its high brightness, wide viewing angle, long life and other characteristics, it is widely used in outdoor advertising screen and other products. The core part of light-emitting diode is a wafer composed of p-type semiconductor and n-type semiconductor. There is a transition layer between p-type semiconductor and n-type semiconductor, which is called p-n junction. In some semiconductor PN junctions, when the injected minority carriers are combined with the majority carriers, the excess energy will be released in the form of light, thus the electric energy can be directly converted into light energy. When the reverse voltage is applied to the PN junction, it is difficult to inject a few carriers, so it does not emit light. The use of injection electroluminescence principle of the production of LED called light-emitting diode, commonly known as LED. When it is in the positive working state (that is, the positive voltage is applied at both ends), when the current flows from the LED anode to the cathode, the semiconductor crystal will emit different colors of light from ultraviolet to infrared, and the intensity of light is related to the current.. After lighting up the screen, there will be two colored lines on the screen, which will never be controlled or repaired.