Your Home Custom Audio Visual Systems :: Difference Between Plasma and LCD

Difference Between Plasma and LCD

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A plasma TV is sometimes called an "emissive" display - the panel is actually self-lighting. The display consists of two transparent glass panels with a thin layer of pixels sandwiched in between. Each pixel is composed of three gas-filled cells or sub-pixels (one each for red, green and blue). A grid of tiny electrodes applies an electric current to the individual cells, causing the gas (a mix of neon and xenon) in the cells to ionize. This ionized gas (plasma) emits high-frequency UV rays, which stimulate the cells' phosphors, causing them to glow the desired color.

An LCD TV is sometimes referred to as a "transmissive" display - light isn't created by the liquid crystals themselves; a light source (bulb) behind the panel shines light through the display. A white diffusion panel behind the LCD redirects and scatters the light evenly to ensure a uniform image.

In general, LCD/TV monitor power consumption requirements is about 40%-50% of what is needed by a typical Plasma TV.

LCD/TV monitors are not only a TV and can be used with DVD, VCD and VCR, they can be also used as a PC monitor. A Plasma TV on the other hand would not be able to double up as a PC monitor.

Overall, LCD is great for displays 30-inches and smaller, and plasma is ideal where 32-inches or larger display is needed.

Plasma TVs usually have a lower resolution than a LCD/TV monitor whose resolution can go as high as 1280 x 1024. Hence, Plasma TV is more suited for distance viewing, while LCD/TV monitors can be viewed clearly both from a distance or up close.

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