Have a good day，everyone，today is Monday，the new week begins，this is DEKE，welcome back to my channel. Have you ever learned about the LED display？I guess you must saw it on the highway and in the shopping mall，and let talk about the details information about the LED display.
The basic principle of LED display. With LED (light-emitting diode) as the basic luminous element (pixel), through the control circuit and drive circuit to control the light and off of each pixel or its degree of light and shade, to achieve a display screen with comparable pixels to display a variety of information required by people. The four most important components are luminous materials (LED), driving circuit, control circuit and frame structure.
How LED displays work. In line scanning mode, each LED dot matrix piece has a set of column drive circuits, and there must be a latch or shift register in the column drive circuit to latch the font data of the content to be displayed. In the line scanning mode, the line control pins of the same row of LED dot arrays with the same name are connected to a line, a total of 8 lines, and finally connected to a line drive circuit. There must also be a latch or shift register in the row driver circuit to latch the row scan signal.
Indoor and outdoor display screens. Indoor LED display screen is used in indoor environment. This kind of display screen has moderate brightness, large viewing Angle, close color mixing distance, light weight and high density, which is suitable for close viewing. Outdoor LED display is used in outdoor environment. This kind of display has high brightness, long color mixing distance, high protection level, strong waterproof and ultraviolet resistance ability, and is suitable for distant viewing.
What are the pixels of an LED display? A pixel is the smallest imaging unit of a display screen, usually composed of one or more light-emitting diodes. 2R1G1B represents the smallest imaging unit of the display, which is composed of two red light-emitting tubes, one green light-emitting tube and one blue light-emitting diode. P is the distance between the dots, and ∮ is the diameter.
This article just introduced some basic knowledge of the display screen, we will continue to explore the display screen in the next article. See you next time！