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By: Rami Al-Atout
An LED TV is just a new generation of an LCD TV. The difference, is that LCD TV’s are lit using fluorescent tubes, and LED TV’s are lit by a series of light emitting diodes (LED's). LCD's are still being made but are slowly being replaced by LED's.
OLED screens have been used for cell phones since 2004 and no one thought about using that screen display on a TV, until 2010. Since the organic compounds in OLED TV’s are bendable, manufacturers started making curved TV’s in 2013.
LCD/ LED:
when the back lights are powered on, rays of light go through a layer of polarized glass that bends the light in order for it to give each pixel an equal amount of power. Then the liquid crystal layer sorts the light energy to give sub pixels enough energy to produce the color that is needed for the image. The next polarized glass layer is used to clear up and sharpen the image so it doesn't look like pixly. A sub pixel it the red, green, and blue in each pixel. each sub pixel has 256 different light levels causing there to be 16.7 million different color combinations per pixel.
Samsung managed to re-label LCD TVs and call them LED TVs only by changing the light source of the TV. After all, Samsung was still selling LCD TVs no matter whether they were fluorescent, or LED-backlit. Basically, an LED TV has an LED light source, but with an LCD display. This was a great marketing strategy causing other TV companies to do the same thing.
Images on a plasma TV are created by ionized gas (plasma) that lights up when an electrical current runs through it. The gas is often neon or xenon gas and coated with phosphoric chemicals.
OLED sub pixels are comprised of a thin layer of organic carbon/helium based compounds sandwiched between two electrodes. When electricity passes from one electrode to the other, it excites the sandwich layer and this causes the compound to emit light.
If you are looking for a TV to put in your house but have a lot of windows that could cause glare, you will want to get the LED TV because its colors are bright enough to counter the glare. Mainly used for watching movies and shows.
If you are looking for a TV or monitor for gaming or video editing, the plasma TV would be your best option since it has the best response time.
55’’ 1080p TV price:
LED - $800
Plasma - $1000
OLED - $2600