Plasma or LCD Display?
What are the LCD advantages over plasma displays?, what are the plasma displays advantages over LCDs
Tema: Plasma or LCD Display?
Many ask which is better: a plasma display or an LCD (liquid crystal display). The differences between them are detailed below:
Plasma Display
A plasma display (or PDP – Plasma Display Panel) is the type of flat display that usually is used for large TV’s (those 37” or 940 mm or larger.) The display has many tiny cells, positioned between two glass panels, which contain a mixture of inert gases (neon and xenon.) The gas in the cells is electrically converted into plasma, which causes colored fluorescents to emit light.
Plasma displays are bright (1000 lx or more per module), have a wide range of colors and can be made in sizes quite large (up to 262 inches diagonal.) They have a very low black level luminance, creating a black that is more desirable for watching movies. This display is only about 6 cm thick and its total thickness (including electronics) is less than 10 cm. Plasmas use as much energy per square meter as CRT (cathode ray tube) or AMLCD (active matrix liquid crystal display) television sets.
The lifetime of the latest generation of plasma displays is estimated at about 60,000 hours (or 27 years at 6 hours of use per day) of real-time viewing. Specifically, this is the estimated average life span for the display, or the time until the picture has degraded to half its original brightness. The display can still be used after this point, but this is considered the end of functional life of the device.
The main advantage of plasma technology is that large displays can be produced using extremely thin materials. Since each pixel is lit individually, the image is very bright and has a wide viewing angle.
LCD Display
Each pixel of an LCD consists of a layer of molecules aligned between two transparent electrodes and two polarizing filters (the transmission axes) which are (in most cases) perpendicular to each other. Without liquid crystals between the polarizing filter, light that passes through the first filter would be blocked by the second (crossing) polarizer.
In color LCDs, each individual pixel is divided into three cells or subpixels, which are red, green and blue, respectively, by increasing the filters (e.g., pigment filters, dye filters and metal oxide filters.) Each subpixel can be controlled independently to yield thousands or millions of possible colors for each pixel. CRT monitors use the same structure of "subpixel" through the use of phosphorus, although the analog electron beam employed in CRTs do not give an exact number of dots.
Factors to consider when buying a LCD monitor
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