LCD and Plasma televisions are flat and thin but the technologies used are different.
Plasma TV Overview
Plasma TV uses an array of cells for cell. Each cell is separated by glass panel which is injected with neon-xenon gas and sealed in plasma during manufcturing. The gas is electrically charged at specific intervals and the charged gas strikes the phosphors coating to produce the image.
LCD TV Overview
LCD TVs on the other hand use Liquid Crystal Display technology. In case of LCD the pixel cells contain liquid crystals which allow crystals to pass or block light to produce images when with light from external source like fluoroscent bulb.
DLP TV Overview
DLP technology is based on a semiconductor chip called a Digital Micromirror Device (DMD). This chip has a matrix of microscopic sized mirrors, each one representing a pixel, which tilt to reflect, or not reflect light. Depending on the how quickly these mirrors reposition themselves, the DMD chip can recreate 1,024 shades of gray.
Color is added by placing a color wheel in front of this microscopic light show that is divided into 4 sectors: red, green, blue, and one clear sector to boost brightness. This color wheel is synchronized with the DMD to display each color so quickly that each color appears to combine and form one composite, full-color image.
OLED TV Overview
OLED TVs use a new display technology called OLED (Organic Light Emitting Diodes). OLED televisions will be brighter, more efficient, thinner and with better refresh rates and contrast than LCD or Plasma TVs.
OLEDs are made by placing a series of organic thin films between two conductors. When electrical current is applied, a bright light is emitted. The OLED materials emit light and do not require a backlight (unlike LCDs).
COMPARISON
Best TV Size
Plasma technology works well on massive screens without losing on the picture, brightness or the color quality. LCD too has come a long way however, the quality of an LCD television deteriorates in very large screen sizes.
For similar screen sizes, typically LCD TVs are lighter.
DLP televisions are generally not available in a size smaller than 42 inches. They also can’t be mounted to the wall like a plasma or LCD.
At this point small OLED displays are common, there is work on improving the technological process in order to be able to manufacture large screens without risking poor quality.
Color Quality and Contrast
Plasma is a clear winner when it comes to picture quality, colors, and contrast. In future due to the improvements in LCD technology and the increased pixel density, the difference between the LCD and Plasma display qualities may not be very significant.
Plasma TVs are also are better at tracking motion.
LCD do not have high altitude use issues.
OLED TVs are technologically very similar to plasma TVs. The black levels of OLED displays are exceptional. This makes the picture really pop, enhancing the colors and the overall picture quality.
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