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What Is OLED TV Technology?

Its been the talk of the town for long and now the OLED televisions are becoming a reality and a part of our lives.

It has been seen as a future of television display for many years but there were some obstacles in the way in the form of high prices, lifespan concerns and production processes. Now however, things are looking up for the OLED TV industry.

What will OLED TV technology bring to this world?

OLEDs would have an organic semi-conductor placed in between 2 electrodes, an anode and another cathode that emit light when the current foes through them. This semiconductor has two layers emissive and conductive layers. These are made from organic materials which would release energy as light when electrons move from one place to another. The color of the light depends on the organic material within the emissive layer. The display of the OLED are made from clear plastic, glass or foil depending on which the screen is used for.

There are two types of OLED formats one produced by Samsung and the other by LG. Both of these have different ways of generating color images. The OLED format used by Samsung is RGB OLEDs in which each pixel has red, green and blue sub-pixels. Here the blue sub pixels are larger than the others and run at lower brightness but they age faster than the other two sub pixels. 

The production costs are higher because of the size of the laser that is used to produce the substrate. LG uses the WOLED technology which uses a mixture of organic materials for creating an OLED that emits a white light. This light passes through a color refiner that uses red, green and blue elements of the light. The fourth sub pixel is white which balances the color output.

What are the reasons for OLED being the future of TV?

The primary reason being that the OLED displays do not require a backlight like the LCD displays for illuminating the entire screen. The OLEDs create light and hence have better-quality viewing angles. There is no visible color shift. 

The second reason is that the OLED panels are lighter and thinner and hence more flexible than the LCD and the plasma displays. The substrates are made from plastic and not from glass and hence they can be bent to any shapes and can be laid flat also. Plastic absorbs more light and so the OLEDs are brighter and much better than the LEDs. Also the OLEDs are easier to produce once the manufacturing processes are streamlined.

( Updated: 2014-06-22 )
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