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
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
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.