Friday, May 28, 2004

OLED Displays Spice Up Mobile Phones

With the arrival of newer, slicker display technologies like organic lightemitting diodes (OLEDs), the LCD looks like the newest "old" technology in the fast-moving mobile handset market. Indeed, OLEDs have strong potential in mobile phones. Yet LCD technology is improving rapidly, providing healthy competition for OLEDs and limiting their market penetration.

OLED displays are attractive to mobile-phone makers because they deliver a high-quality image that doesn't suffer from poor viewing angles, lackluster color, or low brightness levels. OLEDs also are lightweight and increasingly inexpensive. And, they don't need backlighting, making them thinner than LCDs.

OLED Mobile Phone Display Shipments

OLEDs' thinness brings another key advantage to mobile-phone designs. This edge may be magnified by the use of a thin-film encapsulation layer, eliminating one of the two glass substrates now needed to fabricate OLEDs.

Given these advantages, market research firm iSuppli/Stanford Resources expects shipment revenue of OLEDs for mobile-phone displays, mainly color, to rise to $2.3 billion in 2009. That's up from $195 million in 2003.

LCDs still maintain a cost advantage and are much more widely manufactured and available than OLEDs. So, LCDs will remain the market leader in the mobile-phone display market by a wide margin through 2009. Improvements in LCD technology will temper OLEDs' advantages as well.

With Mitsubishi's double-sided, "reversible" LCD, designers can use a single panel for both the inner and outer displays-i.e., the main display and sub-display-on a clamshell phone. The key innovation is the use of a transparent backlight unit. Two of these units sandwich a single LCD panel between them. The display can be viewed from either side by using one backlight and transmitting the image through the other one. Because the display uses only one LCD panel, it's thinner and costs about a third less than two separate displays, Mitsubishi says.

With the arrival of a viable alternative to LCDs, mobile-phone designers now have more options in display technologies to add new features or to reduce cost, size, and power consumption.

iSuppli/Stanford Resources

Kimberly Alien is director of technology and strategic research at iSuppli/Stanford Resources, El Segundo, Calif. ED Online 7833

Copyright Penton Media, Inc. Apr 26, 2004

Source: Electronic Design

Wednesday, May 19, 2004

[ODCAD]Nanotech company Lumera files with SEC for IPO

This is news from Wall Street.

NEW YORK, May 19, (Reuters) - Lumera Corp., which specializes in
nanotechnology to develop products from polymer materials, filed on
Wednesday to go public.
The Bothell, Washington-based company, a majority owned subsidiary of
Microvision Inc. (NasdaqNM:MVIS - News) filed a registration
statement with the Securities and Exchange Commission for a proposed
initial public offering of 5 million shares of its common stock. All
the offered shares will be sold by Lumera.

The lead manager for the IPO will be Paulson Investment Co., with I-
Bankers Securities Inc. acting as co-manager.

ODCAD Comment: The amount to raise is $24 millions.

Monday, May 17, 2004

[ODCAD] US Defence Dept.- Organic Photovotaics (PV)

Effective solar cell device definitly has great application in any electronic products that require power supply. Inorganic semiconductors like Si currently rule the market. Organic materials potentially have advantage of smaller size (thinner), light weight, effcient, flexible (bend without breaking), and low cost. Many experts, and labs bet the future of photovotaics (PV) on organic materials.

US Dept. of Defence may be the biggest investor in this technology. Lynne Samuelson, a researcher at the US Army's Natick Soldier Center, in Massachusetts, claimed that his lab is starting to make proto-type PV devices to try out in the field. That Lab teamed up with a chemistry lab at Univ. of Massachusetts Lowell. The structure and materials used in their cell may contain Titania (? it may mean Ti)-TiO2 particles/Polymer. Titania particle can be as small as 20nm. The polymer is polyethylene terephthalate. Its effciency has not been disclosed. It is estimated that it may be >4%. This lab is expecting 20% effciency in five years.

Information source is Spectrum of IEEE.
ODCAD from OD Software Incorporated (ODSI)( expert and toolkit provider of electronic material, device

Thursday, May 13, 2004

[ODCAD] Nano conveyor of Metal

[ODCAD] Nano conveyor of Metal
Source: Chemical Eng. News, May 3, 2004

Scientists from Univ. of Californian, Berkeley and Lawrence Berkeley National Lab have found a way to transport molten metal along nanotube.

Physics professor Alex Zettl, postdoc Christ Regan and their coworkers applied electrical current to a multiwalled carbon nanotube (MWNT), and the heat generated can melt contacting metal crystal. The metal then migrate along the tube from the anode to the cathode. The metal particles are shuttled along the surface of the nano tube in atomic form without evaporation. They observed that the metal can move over a greater distance than 2 um.

Potentially, this may be useful technology to make nano circuit or nano device combining metal with nano tube.

Wednesday, May 12, 2004

[ODCAD] Philips-high efficiency polymer OLED (breakthroughs)

Improvement of power efficiency is critical for success of OLED display technology. Scientists from Philips claims that a breakthrough in that aspect has been made.

One development Philips made is using proper hole transportation layer (HTL) material. Usually, conductive polymer has more hole injected than electron, which results in waste of energy from extra hole. Choosing proper HTL material to reduce the hole injected can improve the power efficiency. (Sounds like anode junction barrier is increased) The quantum efficiency has been raised to 12% that is about 3 to 6 times higher than standard OLED devices.

Another development Philips made is dispersing a phosphorescent guest material into a light emitting polymer host. The polymer host used by Philips is carbazole-oxadiazole derivative. The guest material is iridium complex. A research fellow Meulenkamp from Philips presented the work on April 28, 2004 at the International Society for Optical Engineering's Photonics Europe conference in Strasbourg, France. Philips expects that these developments can significantly improve polymer OLED (PLED) device performance.

Copy right owned by OD Software Incorporated (ODSI)( expert and toolkit provider of electronic material, device

Monday, May 10, 2004

Recent report from Electronic News says Opticom Stops Polymer Memory Development with Intel.

The wheels of collaboration on organic thin-film transistors (TFT) have come to a grinding halt between Opticom ASA and Intel Corp.
Based on a agreement reaching back to late 1999, Opticom ASA subsidiary Thin Film Electronics ASA (TFE) said it believes it will not make further deliverables or continue development work with Intel, according to Opticom’s Q1 report, released on Wednesday. Intel first invested in Opticom ASA’s Thin Film Electronics ASA (TFE) subsidiary in November 1999 and began collaborating on the development of data storage module prototypes utilizing TFE’s thin polymer film technology. In 2000 , Opticom claimed to have broken the performance barrier with its organic TFT technology that enabled a higher cycle speed than flash memory with true random access writing and erasure, according to the company at the time. In June 2001, Intel made a second investment of $7.85 million in TFE, increasing its stake in the company to 13 percent. At that time, the companies entered into a second license agreement that gave Intel the right to take up a non-exclusive royalty-bearing license in additional fields of use and provided a framework for the companies to enter into a possible productization phase. Based on this latest report, Opticom said technical issues with Intel related to mass volume production under a productization and licensing agreement have not yet solved, therefore, even though the companies have been negotiating and no final decision has been made, TFE does not believe it will make further deliverables nor will it continue ongoing joint development work with Intel. Intel has paid $4 million of the license fee so far for the expanded field of use of TFE’s technology and TFE said Intel has expressed its intention to pay the remaining two installments, however, as it is not a contractual obligation, Intel may choose to abandon the expanded license before that occurs. Intel has not yet released any written statements regarding the matter.

Tuesday, May 04, 2004

[ODCAD] Coming Events in May, 2004
May 4, Singapor: Semicon 2004
Location: Singapore International Convention and Exhibition Centre (SICEC)
When :May 4-6, 2004
More Info:

May 4 US: The 15th Annual IEEE/SEMI Advanced Semiconductor Manufacturing Conference
Location: Seaport Hotel,Boston, Massachusetts, USA
Mre Infor:

Ma 7 Bay Area, CA, US:IEEE EDS/SCV Evening Seminar in Bay area, CA
Location: National Semiconductor, Building 31, 955 Kifer Rd. Sunnyvale, CA
Topic: Compact Modeling
When: 6-8 PM
Admission: Free

May 17 NY, US: Nanobusiness Conference
Location: Marriott Financial Center, NY
More Info

May 23-28 Seattle, US: SID Display 2004
Location: Washtington Sate Convetion and Trade Center
More info :

May 25 Pennsylvania, US:Pennsylvania Nanotechnology Conference 2004
Location: The Pennsylvania Convention Center, Philadelphia, PA
More Info:

To check events in June or later, visit, chect its calendar, and add interesting event to yours.

ODCAD from OD Software Incorporated (ODSI) ( expert, and toolkit provider of electronic material, device.

Saturday, May 01, 2004

[ODCAD] IBM: Nanotube Transistor, outperformed Si technology

Carbon nanotube can be used for many device application because of
its special electronic properties such as high electron mobility. IBM
developed a transistor based on C6 nanotube with the same drain,
source, gate and dielectric as Si CMOS technology, but using C6
nanotube instead of Si based semiconductor. The transistor has much
better performance than conventional one such as CMOS.

For IBM, and all of the industry, they still have manufacture
difficulties to massive produce the device.

[ODCAD] Blue Color Life of OLED

The industry standard for display device life is 100,000 hrs. LCD and Plasma are two popular FPD technologies. All of them have reached this standard.

Color of OLED can be achieved by three elemental color materials. Each material gives one of the colors Red, Yellow and Blue. There are the other technologies to achieve full color of OLED, which will be covered later.

One of targets of OLED is to increase the life of each color material. This is particularly true for Blue color material. The longest life for this is 45,000 hr (this is my knowledge, you may share with us if you have the latest info). For chemist, material scientist, it is a great job ahead of them.