Blue color

At their yearly share holder meeting, UDC reviewed their company's and the OLED industry's progress. UDC also highlights continued adoption of its energy-efficient PHOLED technology in commercial displays and advances in its flexible OLED, white OLED lighting, and printable, phosphorescent P(2)OLED(TM) technologies.

Merck KGaA announced today that it is launching several new OLED materials, including a blue singlet emitter (SEB series) that features ultra deep blue color coordinates. Measured in solvent, this dopant shows a color as deep as CIE(x;y) 0.15/ 0.09 with a full width half maximum (FWHM) of only 54 nm.

Idemitsu Kosan and Sony announced the achievement of 28.5% internal quantum efficiency (IQE) in deep blue fluorescent OLED devices, the world's highest level of luminous efficiency for this technology.

Toray Industries Inc announced that it has succeeded in developing blue light emitting materials, boasting the world’s highest levels of efficiency and pure color emissions, for use in full-color organic EL displays.

The combination of Toray’s proprietary molecular design technology and nano-dispersion technology was instrumental in the material achieving superior light emitting performances of luminous efficiency 6 cd/A (candela/ampere) and color purity (CIE(x,y) = (0.14,0.10)) in combination with Toray’s electron-transporting material.

Evaluation of these newly developed materials with respect to its applications is currently underway and Toray is committed to accelerating the process towards its early commercialization.

Idemitsu Kosan and Universal Display Corporation today announced that they have signed an agreement to extend their collaboration to accelerate the development of phosphorescent OLED materials for use in displays fabricated through “dry” processing methods, such as vacuum thermal evaporation. The agreement expands the collaboration into red and green phosphorescent OLED materials, in addition to the blue materials that the two companies have been collaborating to develop since December, 2006.

An independent administrative institution, the New Energy and Industrial Technology Development Organization (NEDO), contracted out the development of technology for organic light-emitting diode-based (OLED) lighting as one of its fiscal 2007 projects to Matsushita Electric Works Ltd., Idemitsu Kosan Co. Ltd. and Tazmo Co. Ltd.

The new set of materials rely on DuPont hole-injection layer (HIL) material and include those essential in the construction of an OLED display, such as light-emitting and charge-transport materials.

DuPont Displays said it has also exceeded the reported performance of other solution-based OLED materials and has measured accelerated lifetimes of the three primary colors that could translate in a display to 20,000 hours of white lifetime (which is extended by as much as five times when showing video) at a normal viewing brightness (200 cd/m2). At 1000 cd/m2 -- the standard test luminance used in the industry -- the DuPont materials have lifetimes (T50) of 14,000 hours for blue with CIE 1931 color coordinates of (0.14, 0.16), 230,000 hours for green with color coordinates of (0.29, 0.65), and 46,000 hours for red with color coordinates of (0.66, 0.34).

Novaled achieved unsurpassed lifetime results for top and bottom emitting red fluorescent devices. A red bottom emitting Novaled PIN OLEDTM shows a luminance drop of only 4% after 6000 hours measurement at a starting brightness of 3,700 cd/sqm. The record top emitting red PIN OLED shows a luminance drop of even only 1% after 1,000 hours measurement at a starting brightness of 12,000 cd/sqm. Both OLEDs are down calculated to more than one million hours (corresponding to one century) at starting brightness of 1,000 cd/sqm.

Data from spin coated devices using a common cathode and a recently developed solution processable green P-OLED material demonstrate lifetimes(1) of 50,000 hours from an initial luminance of 1000 candelas per square meter, or cd/sq.m. This is equivalent(2) to over 285,000 hours from an operating brightness of 400cd/sq.m for this material and represents a 40% increase in lifetime compared to results announced on March 27, 2007.

OLED-T has demonstrated red, green and blue flexible single colour displays manufactured on a plastic substrate using its OLED materials. The demonstrator displays have been developed using a new family of materials developed by OLED-T that can be deposited by vacuum evaporation at manufacturing temperatures around 300oC. This relatively low temperature has enabled OLED-T to demonstrate flexible plastic OLEDs based on vacuum deposition for the first time.