OLED (Organic Light Emitting Diodes) is a flat display technology, made by placing a series of organic thin films between two conductors. When electrical current is applied, a bright light is emitted. Because OLEDs produce (emit) light they do not require a backlight. This means that OLEDs can be made very thin and very power efficient when compared to LCD (which do require a white backlight).
OLED is the latest display technology to be introduced to the domestic television market. It is impossible to predict the largest OLED television and indeed, a little pointless to look at size as a milestone in LED television technology. OLED allows LEDs to be printed onto a substrate at very small sales so it is ideal for small screens. As the screen size increases, conventional LEDs become more viable than OLED. The largest true LED driven screens are those seen in open air and concerts, up to 40 feet wide or more. At present, commercial factors will decide the largest OLED display to be marketed. Those people who are looking for huge screens still have an option to consider conventional LED displays. Note that LED displays referred to here means the displays that use LEDs to generate the image and not as back lights for LCD displays.
OLED is being used in cell phones, A/V players, watches, car audio systems, remote controls, electric razors, digital cameras, flat-screen televisions, energy-efficient lighting fixtures/lamps, windows, head mounted devices, and informational signs at kiosks. OLEDs are ideal because they can be viewed from far angles. However the use of OLED in TV is attracting the most attention lately.
OLED televisions are very new in the market and products are changing fast. At present (June 2012) there are some 32 and 40 inch OLED models. Both Samnsung and LG have shown 55 inch screens at trade shows but neither are available at present. Expect prices in excess of $10,000 when they are sold. However, Mitsubushi appear to have demonstrated the largest OLED display with a 2.7 meter (9 feet) wide display. Admittedly, this is a commercial display and like the big LED displays found in sports and concert venues, can be scaled to suit the application. The end of 2013 and beginning of 2013 is predicted to be the start of OLED televisions at more affordable prices and at a range of sizes.
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OLED: Organic Light Emitting Diode.
The actual price hasn't been disclosed by any of the brands who unveiled their OLED TVs.
OLED's are brighter than LEDs, OLED's do not require Backlighting. They are easier to produce and can be made to larger sizes. They are expensive, water easily damages them.
It is very true that everyone can not afford OLED TV. The expected price of LG OLED TV is into five figures. But it will be better confirmed when OLED TV will be launched.
ETL in OLED stands for Electron Transport Layer. It is a component of an OLED device that facilitates the movement of electrons from the cathode to the emissive layer, where light is generated. The ETL helps improve the efficiency and performance of OLED displays by providing a path for the electrons to reach the emissive layer.
An OLED screen is typically used in televisions that use a high definition display. The OLED light is what gives the high definition televisions a clear high definition picture.
Oled TVs use Organic light-emitting diodes. They are supposed to be crystal clear.
LG has stated their OLED TV will be released in early Q3 2012. Samsung has indicated there release will be in Q2.