OLED - Organic Light Emitting Diode, also Light Emitting Polymer (LEP) and Organic Electro Luminescence (OEL), is any Light Emitting Diode (LED) whose emissive electroluminescent layer is composed of a film of organic compounds. The layer usually contains a polymer substance that allows suitable organic compounds to be deposited. They are deposited in rows and columns onto a flat carrier by a simple "printing" process. The resulting matrix of pixels can emit light of different colors.

Such systems can be used in television screens, computer displays, small, portable system screens such as cell phones and PDAs, advertising, information and indication. OLEDs can also be used in light sources for general space illumination, and large-area light-emitting elements. OLEDs typically emit less light per area than inorganic solid-state based LEDs which are usually designed for use as point-light sources.

A significant benefit of OLED displays over traditional liquid crystal displays (LCDs) is that OLEDs do not require a backlight to function. Thus they draw far less power and, when powered from a battery, can operate longer on the same charge. Because there is no need for a backlight, an OLED display can be much thinner than an LCD panel. OLED-based display devices also can be more effectively manufactured than LCDs and plasma displays However, degradation of OLED materials has limited their use.

Sony first began researching organic materials in 1994, and has since proceeded with the development of OLED technology targeting its use in practical applications. Sony first launched mass production of small sized, full-color OLED panels in 2004, achieving commercial use within mobile products. Sony subsequently positioned OLED as a key next generation display device, and further accelerated its research and development of OLED technology. Following more than ten years of OLED development, Sony has accumulated numerous related core technologies, such as Sony's proprietary "Super Top Emission" panel technology which enhances the brightness and color reproduction capability of OLED panels, as well as manufacturing technologies gained from Sony's experience of mass producing small sized OLED panels. In September 2007, Sony commenced mass production of its independently developed "Organic.

At the Las Vegas Consumer Electronic Show (CES) 2008, Sony showcased 11-inch (28 cm, resolution 1,024×600) and 27-inch (68.5 cm, full HD resolution at 1920×1080) models claiming million-to-one contrast ratio and total thickness (including bezels) of 5 mm. Sony released a commercial version of this television in Japan in December, 2007.

Sony XEL-1 11-Inch OLED HDTV

Sony's OLED TV , the XEL-1, is truly the next big thing in television technology which can completely turn off pixels when reproducing black, resulting in more outstanding dark scene detail and a contrast ratio of 1,000,000:1. OLED also creates unmatched color expression and detail and enables rapid response times for smooth and natural reproduction of fast moving images like those found in sports and action movies. The XEL-1 features the latest connectivity options including two HDMI™ inputs, a digital tuner, and a Memory Stick® media slot for viewing high-resolution photos.

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