The CRT in a CRT TV is the cathode ray tube, which is essentially a vacuum tube that contains one or more electron guns as well as a fluorescent screen that is used for viewing images. It has a way of accelerating and deflecting electron beam(s) onto television screens in order to create the actual images. The images can symbolize electrical ...
LCD and DLP are two new and different imaging technologies for flat screen TVs. LCD stands for Liquid Crystal Display and DLP stands for Digital Light Processing. Both produce accurate and sharp images. The differences are in display, price and performance.
The Eidophor principle of modulation is for the cathode beam to scan the Eidophor surface, controlled by a video signal in such a way that the resulting deformations are proportional to the instantaneous values of the controlling signal. The actual controlling element is the spot size of the electron beam. The smaller the spot size is, the deeper the deformation of the Eidophor will be, causing more diffraction of light to take place, in turn producing a brighter spot on the screen.
Electroluminescent Displays (ELDs) are a type of Flat panel display created by sandwiching a layer of electroluminescent material such as GaAs between two layers of conductors. When current flows, the layer of material emits radiation in the form of visible light.
A generic LCD TV, with speakers on either side of the screen Liquid-crystal-display televisions (LCD TV) are television sets that use liquid-crystal displays to produce images. LCD televisions are thinner and lighter than cathode ray tube (CRTs) of similar display size, and are available in much larger sizes. When manufacturing costs fell, this combination of features made LCDs practical for television receivers.
LED Display (light-emitting diode display) is a screen display technology that uses a panel of LEDs as the light source. Currently, a large number of electronic devices, both small and large, use LED display as a screen and as an interaction medium between the user and the system.
LCD: liquid crystal display. Works by adjusting the amount of light blocked. Usually has a backlight but might not (clocks, calculators, Nintendo Gameboy). The green-black ones can be very cheap and are a mature technology. Response time can be slow. TFT: is a type of LCD with a thin film transistor attached to each pixel.
Plasma TVs are not as bright as most LCD TVs. Plasma TVs perform better in a dimly lit or darkened room. Screen surface is more reflective than most LCD TVs. More susceptible to glare - screen surface reflects ambient light sources. Plasma TVs are more susceptible to burn-in of static images.
Modern HDTV plasma televisions usually have a resolution of 1,024×768 found on many 42 inch plasma screens, 1,280×768, 1,366×768 found on 50 in, 60 in, and 65 in plasma screens, or 1,920×1,080 found in plasma screen sizes from 42 inch to 103 inch.