Choosing Between The Plasma And Lcd Televisions

How do these TVs work? LCD stands for "liquid crystal display." These spiral-shaped

crystals are somewhere between a solid and a liquid, and can be rolled and unrolled by applying electricity. In a display, this is used to block and unblock colored pieces of glass. Each pixel is made up of a green, red, and blue filter. The image is displayed by shining a light through the LCD, which filters the color like a giant slide.

The plasma has fluorescent lights inside like an office light but very much smaller size. When the electricity goes through this light the gas inside the bulb reacts with the phosphor coating on the inside of the bulb which then creates light. Then like the LCD, with the pixels of green, red and blue lights, are inside the bulbs and create the color.

How do we know this technology advantages and disadvantages? First, the plasma has more control over its light levels which makes it advantageous in a darker room, and it shows the deeper blacks and is visible from all angles. But it's not great in a room with a lot of natural light because the screen will reflect light, the LCD is better in brighter rooms and it has light being passed through the screen. But the light doesn't do as well on the edges so from the side it doesn't view as well. But the LCD is the greater energy conserving device as the plasma uses 2 - 3 more power, and if the LCD has an LED screen it saves even more energy.

How have these technologies improved? Due to technological advances on both sides, LCD and Plasma sets are much closer to each other in performance than they once were, reducing the issues owners had with older models: Early LCD sets suffered from motion blur because they couldn't switch the crystals on and off very quickly. Newer sets can switch at 120-240hz (times per second), virtually eliminating this problem. Meanwhile, manufacturing processes have improved bringing prices of LCD screens much closer to their plasma counterparts.

Meanwhile, plasma TVs have become less susceptible to burn-in: when an image is left on the screen long enough, it can create a darkened area that shows up whenever the TV is used. This mostly happens when the set is left on a channel for long periods of time, or used to play video games. While most of the screen changes, the station logo or status displays in the corners do not. New screen coatings lengthen the time it takes for burn-in to happen, while screen savers ensure an unused TV does not display the same image.

by: Jason A Thomas

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