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21-inch OLED display
Toshiba Matsushita develops largest LTPS OLED display to date

Toshiba Matsushita Display Technology Co., Ltd. has developed the first 20.8-inch low-temperature poly-silicon (LTPS) organic light-emitting diode display (OLED) panel.  The new panel holds the largest screen size for LTPS OLED displays, following the 17-inch model developed in April 2002.


The LTPS technology, along with a uniform organic electroluminescent coating process, allowed for the larger screen size to be developed. The panel produces images from light emitted by fine organic electroluminescent film formed on the glass substrate, where is can offer high contrast and fast response time, along with a wider viewing angle and a thinner profile by eliminating the backlight system. 

The display also holds three RGB color-emitting layers that use polymer organic electroluminescent materials, along with an ink-jet type coating process for each color.  Toshiba Matushita developed the management-of-light at the nanometer level in individual pixels to improve efficiency of distribution of light produced from the layers.

Several months ago, Sony Electronics showcased its OLED research, demonstrating a prototype of its 27-inch flat panel OLED model at the Consumer Electronics Show.  Other companies, such as RiData, LG. Phillips, and Mitsubishi Chemical, have produced smaller models of the OLED display primarily for cell phones and other small screen devices.  However, Ritek has since closed down its RiData OLED operation.

OLED technology has also made its way into keyboards, with the Optimus Maximus, and automobiles, such as the gauge display on the C6 Corvette and car audio face-plates.

The drawback to the OLED display is the still relatively short life-span.  The average life-span for the display is around 10,000 hours of viewing, while most other television technologies last 50,000+ hours.

The newly developed panel will be exhibited at Toshiba Matsushita's booth at the 3rd International FPD Expo (Display 2007) at Tokyo Big Sight from April 11 through April 13, 2007.

Toshiba Matsushita has not released a price for the new panel yet.





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