cintelliq in Seattle

cintelliq is attending SID in Seattle. If you would like to meet to discuss more about what we do, our forthcoming conference (OSC-04), or how we might be able to work together then please do contact us at marketing@cintelliq.com to arrange a date and time.

Philips reports breakthroughs in light emitting polymer efficiencies

Scientists at Philips have developed new methods to significantly increase the efficiency of PolyLED polymer OLED (organic light-emitting diode) displays. This opens the way to lower power consumption and will further strengthen the inherent advantages of polymer OLED for mobile and other applications, and enables the use of polymer OLED in solid-state lighting applications.

Efficiency is a major focus in current polymer OLED research since higher efficiency opens the way to low-cost, large-scale manufacturing. The two Philips developments aimed at increasing quantum efficiency in polymer OLEDs are both likely to have important consequences for the future of polymer OLED research.

Development 1: -- relates to the development of a novel anode layer that significantly reduces losses due to imbalances in the hole and electron partial currents.

• With present anode layers, hole current can far exceed electron current resulting in significant energy wastage since the excess holes cannot combine with electrons within the polymer to generate light
• The new anode layer introduces a barrier to hole injection to reduce the number of excess holes
• Results reported by Philips Research show good balance between holes and electrons at high voltage, and this is supported by huge increases in quantum efficiency to around 12%. (from between 2 to 4% for standard devices)
• This translates into a luminous efficacy of 35 cd/A for a yellow light-emitting polymer and 20 cd/A for a blue-emitting polymer - the latter currently the world record in luminous efficacy for blue polymer emitters

Development 2: -- relates to the development relates to improving polymer OLED efficiency by utilising both fluorescence and phosphorescence.

• Phosphorescence is caused by the excited electrons returning to the ground state from a long-lived triplet state (in contrast to fluorescence in which the transition to ground is from a short-lived singlet state)
• By dispersing phosphorescent "guest" material into a light-emitting polymer "host", it is possible to use all excited states for the emission of light - provided the triplet energy gap of the host is higher than that of the guest
• This condition is particularly hard to meet for higher-energy green and blue emitters. Until now the only polymers capable of hosting blue and green phosphorescent emitters have proven unpractical in polymer OLED applications
• In collaboration with TNO Industrial Technology, however, Philips Research has produced a new copolymer material suitable for hosting a green triplet emitter and providing a high luminous efficacy of 24 cd/A
• Still higher efficacies and efficient blue emission are expected in the future with further optimisation of the copolymer composition

Eric Meulenkamp, Philips Research, said -- "These breakthrough developments point the way for the future in which we fully expect to see increases approaching 10-fold in polymer OLED efficiency without any compromise of the technology's inherent simplicity and easy manufacturability."

He added -- "Along with other developments in the pipeline, this could lead to polymer OLED technology overtaking LCD to become one of the major display technologies of the future."

www.philips.com

MicroEmissive Displays announces US $3M of further investment

MicroEmissive Displays Ltd (MED), has announced that it has received a further investment of US $3M. The funding is a combination of venture capital and private investment.

New investors, Sigma Technology Management Ltd and Braveheart Ventures Ltd join an international portfolio of existing investors including, Scottish Equity Partners, European based BASF Venture Capital GmbH and 3i plc.

Bill Campbell, Chief Executive Officer, said -- "The introduction of two new investors at this stage in the company’s development reflects the strong potential of the near-eye microdisplay market in general and MED in particular."

He added -- "The company is on track to deliver its unique product to customers in the digital still and digital video camera markets over the coming months providing compelling benefits of low power consumption and image quality."

www.microemissive.com

Prime View and RiTdisplay collaborate on AMOLED

According to EE Times Asia, Prime View Int. Ltd has begun collaborating with RiTdisplay Corp. with the goal to develop 2.2-inch active matrix organic light emitting diode (AMOLED) display panels.

Y.S. Chang, R&D VP of Prime View, said -- "Most Taiwan companies make passive-matrix OLED panels that consume more power. AMOLED panels, on the other hand, feature low power consumption and fast reflection. They are suitable for use in large and high-resolution displays."

• RiTdisplay will set the manufacturing processes for the new 2.2-inch AMOLED panels designed for use in mobile phones.
• Prime View is currently focusing about 40 to 50 percent of its R&D on AMOLED

www.ritdisplay.com   www.pvi.com.tw   www.eetasia.com

Global-Tech Appliances (Lite-Array) announces introduce a wide range of OLED display modules

Global-Tech Appliances Inc. announced that its wholly owned subsidiary, Lite Array, Inc. "Lite Array", has extensively re-designed its website to introduce and feature a number of unique mono- and multi-colour organic light emitting diode (OLED) display modules, which it believes are suitable for use in cellular phones, MP3 players, and other electronic devices.

John C.K. Sham, President and Chief Executive Officer, said -- "As Lite Array begins to implement its marketing plan to introduce various OLED display modules, we expect the enhancement of its website to facilitate its sales efforts by enabling potential customers to review the latest products available. Additionally, the website is expected to provide potential customers with a better understanding of Lite Array and valuable insight into its cost-effective manufacturing capabilities in Dongguan, China."

www.litearray.com

NanoInk releases product upgrade

NanoInk, Inc. has announced two enhancements to its NSCRIPTOR DPNWriter system: passive multi-probe arrays and Inkwell arrays for coating the probes with molecular ink. Both product upgrades serve to expand the utility of Dip Pen Nanolithography(TM) by allowing the user to write multiple patterns simultaneously.

The new probe arrays are "passive" in that all probes in the array move in unison in X, Y, and Z directions, while scanning and writing. Multi-probe technology represents a powerful scaling-up of the DPN (TM) process, and takes the NSCRIPTOR product line from that of a single-pen DPNWriter to a higher-throughput system.

Dr. Ray Eby, Vice President of Product Development, said -- "Scalable throughput means that the NSCRIPTOR system can function as a rapid prototyping tool for nanomaterials discovery."

He added -- "NanoInk's new multi-probe offering includes a wide variety of probe array configurations, whereby the various array types are each optimized for specific DPN applications. NSCRIPTOR's software platform, InkCAD™, has an upgrade module which supports pattern design with multiple sources of ink, which is required for using multi-probe arrays."

In addition to having developed the new passive probe arrays, NanoInk has developed Inkwell arrays for the dipping (i.e., inking) of the probe arrays.

• Micro-fabricated arrays of micro-wells are fed solutions of ink via micro-channels that are connected to reservoirs
• The reservoirs permit the manual dispensing from NanoInk's Ink Dispensing Kit (IDK). The IDK allows a user to easily fill the Inkwell arrays
• A filled Inkwell array is placed into the NSCRIPTOR system for probe dipping and subsequent patterning with the inked DPN pen arrays (a DPN probe becomes a DPN pen once it is inked)

Together, Inkwells and multi-probe arrays form part of an integrated, whole product solution for DPN applications, allowing nanotechnology researchers to perform true bottom-up fabrication tasks.

www.nanoink.net

Organic Semiconductor Conference (OSC-04)

cintelliq is please to announce that we are making excellent progress with this year's conference. Already we have secured more than 14 international known speakers to present over the course of the two day conference (27 and 28 September 2004).

In addition, we are finalising the structure of the two optional half-day workshops that are scheduled to take place on the 29 September 2004.

If your wish to present at OSC-04 please do contact us with a proposal for our review and consideration.

A number of exhibition spaces have already been booked. So if you are planning to exhibit at OSC-04 you need to let us know sooner rather than later so as not to be disappointed.

If you have never considered sponsorship then you may be surprised at the options available and the value they represent. We limit the number of sponsorship options to maximises the benefit to our sponsors. The earlier you consider sponsorship the greater the benefit obtained from your investment.  Please contact Anna Volund (marketing@cintelliq.com) for more details.

OSA Direct welcomes news items of either a technical or commercial nature from its readers. To forward news to be considered for publication please contact editorial at news@cintelliq.com