Monitors can be divided according to their working principles:
1. CRT, cathode ray tube monitor. The cathode ray tube mainly consists of five parts: electron gun, deflection coil, shadow mask, phosphor layer and glass shell. CRT flat-screen monitors have the advantages of large viewing angles, no dead pixels, high color reproduction, uniform chromaticity, adjustable multi-resolution modes, and extremely short response time.
2. LCD, liquid crystal display. The working principle is that there are many liquid crystal particles inside the display, which are regularly arranged in a certain shape, and each side of them has a different color. It can be restored to any other color. When the monitor receives the display data from the computer, it will control each liquid crystal particle to rotate to a different color surface to combine into different colors and images.
3. LED, light-emitting diode display. It is a display screen that displays various information such as text, graphics, images, animations, quotes, videos, and video signals by controlling semiconductor light-emitting diodes.
4. 3D, 3D display. Using the "parallax barrier", the two eyes receive different images respectively to create a three-dimensional effect. The flat panel display provides two sets of images with different phases to form a three-dimensional image.
5. PDP, plasma display. The imaging principle of plasma display technology is to arrange thousands of small sealed low-pressure gas chambers on the display screen, which are excited by current to emit ultraviolet light invisible to the naked eye, and then the ultraviolet light hits the red and green colors on the glass behind it. The three-color phosphors, blue and blue, emit visible light that can be seen by the naked eye to form images.
Extended information:
The first operational LCD was based on Dynamic Scattering Mode (DSM), which was developed by a team led by George Hellman at RCA. . Hellman founded Optel, a company that developed a series of LCDs based on this technology. ?
In 1969, James Ferguson discovered the rotating nematic field effect of liquid crystal at Kent State University in Ohio, USA, and registered the same patent in the United States in February 1971. In 1971, his company (ILIXCO) produced the first LCD based on this feature, replacing the inferior DSM-type LCD.
Baidu Encyclopedia - Liquid Crystal Display
Baidu Encyclopedia - Display