The cathode ray tube or CRT has traditionally been used on most computer monitors, and the appearance of plasma screens, LCD, DLP, OLED displays, and other technologies. As a result of CRT technology, computer monitors are still called "The Tube". The CRT works by moving the electron beam back and forth on the back of the screen. Each time the beam passes through the screen, the glass tube lights up inside the glass tube to illuminate the active parts of the screen. Drawing many of these lines from the top of the screen to the bottom of the screen creates a full-screen image.
Liquid Crystal Display (LCD) is a thin, flat display device consisting of any number of color or monochrome pixels in front of a light source or reflector. It uses a very small amount of electricity and is suitable for the use of battery power devices before.
A plasma display is a flat-panel display with light emitting phosphorus caused by plasma discharge between two flat glass panels. The gas discharge does not contain mercury, a mixture of noble gases (neon and xenon) is used. This gas mixture is inert and completely harmless.
It seems that glass plates are sealed in vacuum because broken plasma is broken down, apparently by adding air to the space.
Surface Builder Electron Emitter Display (SED) Flat Screen High Resolution Display. Some SED diameters exceed one meter (about 40 inches).
The SED consists of an electron-emitting array and a phosphor layer separated by a small space from which the entire air is emptied. Each electron emitter represents one pixel. SED does not require electron beam focusing and operates at a much lower voltage than the CRT. Brightness and contrast have a positive effect on high-end CRTs. Prototype electron emitters have been developed with a few nanometers in diameter. SED technology offers precedent resolution.
Digital Light Processing (DLP) technology used in projectors and video projectors. In DLP projectors, the image is microscopically small mirrors placed in a semiconductor chip matrix known as the Digital Micromirror Device (DMD). Each mirror represents one pixel in the projected image. The number of mirrors corresponds to the resolution of the projected image: 800×600, 1024×768, 1280×720 and 1920×1080 (HDTV) matrices are common DMD sizes. These mirrors can be quickly moved to reflect the light towards the lens or heat sink.
The organic light emitting diode (OLED) is a thin film light emitting diode (LED) in which the emission layer is an organic component. OLED technology primarily serves as a visual element in practical display devices. These devices are much less expensive than conventional LCD displays. When the emission electroluminescent layer polymer is, the variable amounts of OLEDs can be placed in the rows and columns of the screen, using simple "printing" methods, creating a graphical color display, computer display, portable system screen, advertising and information use. board. OLED can also be used in lighting devices. OLEDs are available as distributed sources, while inorganic LEDs are light sources.