Thursday, July 08, 2004

GE joined Nanotechnology Team

By W.D. Crotty , originally published on
July 7, 2004

When Carl Wherrett and John Yelovich provided their excellent commentary on nanotechnology, all the usual electronics suspects were there: IBM (NYSE: IBM), Hewlett-Packard (NYSE: HPQ), Intel (NYSE: INTC), Texas Instruments (NYSE: TXN), and Advanced Micro Devices (NYSE: AMD). Now add General Electric (NYSE: GE) to that list.

The company announced its nanotechnology breakthrough as a cover story for "Applied Physics Letters." Don't have a subscription? Well, GE has developed the world's best performing diode built from a carbon nanotube. It's small. It's fast. It's a key to GE's technology future.

For those saying, "What does this mean?" GE offers the following quote: "Just as silicon transistors replaced old vacuum tube technology and enabled the electronic age, carbon nanotube devices could open a new era of electronics." Initial applications, which are just starting to be developed, include computing, communications, power electronics, and sensors.

GE's breakthrough is continuing proof that the road to smaller, faster, and cheaper electronics is still on the horizon. The promise of advanced sensors that enable enhanced security at airports, office buildings and other public areas also provides hope to those worried about terrorism.

The nanoelectronics marketplace is crowded with giants. But, as Carl and John said, "Investors should know that nanotechnology is not likely to produce a revolutionary upstart that will leapfrog the established electronic giants with advanced technology. We're not saying it's impossible for a true Rule Breaker to emerge, but it won't be easy. With fabrication plants costing $2 billion to $4 billion each, it probably will be prohibitively expensive for smaller companies to land the kind of financing it would take to unseat firms with deeper coffers."

Tuesday, July 06, 2004

OLED Display Tech on CNN news


June 4, 2001 Posted: 12:28 p.m. EDT (1628 GMT)

By Douglas F. Gray

(IDG) -- Display vendors this week will show the public what they believe screens of the future will look like at the Society for Information Display's (SID) annual symposium, seminar, and exhibition when they fight for attention with tiny OLED (organic light emitting diode) displays.

OLED displays use emissive technology, meaning they emit light themselves, like a CRT television or a plasma display, eliminating the need for the backlight required by LCDs. By cutting out the backlighting, display makers can create panels that are both thinner and consume less power, said Kimberly Allen, director of technology and strategic research for analyst group Stanford Resources. INFOCENTER

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The market for OLED displays is set to explode from a $29 million market in 2000 to a $1.6 billion market in 2007, according to a Stanford Resources report.

Although consumers probably will not see OLEDs in their notebooks for at least five years, the technology will probably make it to PDAs within the next couple of years, Allen said.

In Asia, some companies use the term OELD (organic electroluminescence display) to refer to the same technology.

Currently, Pioneer is the only company with OLED technology on the market. Pioneer launched the first OLED product, a car stereo display in 1998, and Motorola Timeport phone uses a Pioneer OLED display, Allen said.

"There are more products expected this year," Allen said. Products including another car stereo, a handheld game display, and more mobile phones are all expected to be rolled out onto the market this year from various vendors.

However, until prices fall, the manufacturers will not make displays much larger than mobile phone and car stereo displays. "They just don't have the manufacturing technology to make large panels reliably and at a reasonable price," Allen said. "But manufacturing cost is expected to be much lower than that of LCDs somewhere in the near future," she added.

Although OLED is not yet as common as LCD to consumers, there is a lot of development going on behind the scenes. "Every large Japanese display company is involved in OLED," Allen said. There is also a partnership between Samsung Electronics and NEC working on OLED, and Koninklijke Philips Electronics has been working on the technology as well.

Nearly 500 booths will fill the McEnery Convention Center for the display show, ranging from household names like Toshiba, NEC, and Sharp Electronics to lesser known companies including Candescent Technologies and LCD manufacturer Optrex America.

Tohoku Pioneer, a unit of Pioneer, will be demonstrating its three-inch color OLED panel, aimed at PDAs, which it created with Semi Conductor Energy Laboratory. The companies have also teamed up on a 1.8 inch color OLED display that they will be showing.

Optrex America, which was founded as a joint venture between Asahi Glass and Mitsubishi Electric, will also be showcasing its own OLED technology, which it expects to see in production of automobiles, most likely used in displays on stereos and climate control panels, by 2004.

Toshiba will show a prototype of its full-color polymer OLED at the show this week. The 2.85 inch display supports 260,000 colors in Q-CIF format. The current OLED technology on the market is small-molecule technology; polymer OLEDs have not been put into mass production yet, Allen said.

The only difference between polymer OLEDs and small-molecule OLEDs is the technique used to produce the display. "I wouldn't say that one is technically better than the other, but polymer is in an earlier state of development," Allen said.

Toshiba expects to start production of the polymer displays in fiscal 2002, initially targeting the mobile phone and small to midsize PDA markets, the company said. Following that, the company will target midsize and large displays, including high-end portable PCs that require higher resolution, Toshiba said.

Eastman Kodak is key patent holder for small-molecule OLED technology, Allen said.

Monday, June 28, 2004

[ODCAD]Spin on inorganic semiconductor

Did I make mistake in typing "inorganic"? No, it is true. Spin techlogy is usually regarded as a cheap method to deposite organic material because organic material can be dissovled in popular solvent. Si based inorganic semiconductor is covalent bond, and it has very low slubility in virtually any solvent. However, some inorganic material such as chalcoginide has relatively weak bond compared with Si. IBM's T.J. Watson Resaerch Center has discovered that this type of material may be dissolved in solvent hydrazine (N2H4) with other adding chemical. for example, Sn(S)y(Se)x can be dissovleved when extra solfur is added. The solution then is spin on substrated. After baking, the solvent and extra sulfur is evaporated. This results in very thin semiconductor Sn(S)y(Se)x.

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

Monday, June 07, 2004

[ODCAD] Sharp-Blue Laser Diodes

Blue-violet Laser Diode is one of the components used in next generation of DVD. This high density (27 gigabits/disc) DVD requires Blue laser light to record digital information. The lab of Sharp in UK has developed a method to make this diode. The material is Indium-Gallium-Nitride (InGaN). This lab used a technique of molecular beam epitaxy (MBE). Sharp has already used this technique to manufacture Red laser diodes. This new method can compete with the others[1] that have been protected by patents.

1. Blue-laser using metal organic chemical vapor deposition developed by Shuji Nakamura, Nichia Corp, Tokushima, Japan
Copy right owned by OD Software Incorporated (ODSI)( expert and toolkit provider of electronic material, device

Friday, June 04, 2004

[ODCAD] Samsung-OLED competing with LCD

Source from ZDet UK on May 18, 2004

Samsung SDI, the Korean giant's display division, has announced prototypes of a 17-inch active matrix organic light emitting diode (OLED) display. Due for launch next year, the display has a resolution of 1600x1200 pixels and a brightness of 400 lumens, and is the largest OLED matrix display to date according to the company.

It will consume no more power than a 15-inch display and be a third of the thickness of existing LCD models, the company said. The prototype will be shown at the 2004 Society for Information Display (SID) conference, taking place from 25th May in Seattle.

The displays are made using a transfer technology developed by Samsung and 3M, where the pattern of plastic pixels on the screen is printed by scanning a laser across a set of organic films. This can produce a larger screen than is possible by the alternative method of spraying the plastic through a patterned shadow mask, says the company, while allowing a similar precision.

Organic LEDs are luminescent plastic semiconductors with the theoretical potential to replace LCDs, CRTs and other display technologies through greater efficiency, easier production, more physical flexibility and lower cost. To date, however, problems with device lifetime, chemistry and production have limited their use to mobile devices and backlights. Samsung's basic OLED technology was licenced from Kodak and developed in conjunction with NEC, which sold its stake in the joint venture to Samsung at the beginning of 2004.

Tuesday, June 01, 2004

[ODCAD] Events in June, 2004

Asia: Tokyo, Japan, June 7, 2004 CIE Expert Symposium on LED Light Sources: Tokyo, Japan, more information

Asia: Taiwan, June 9-12,2004 Display Taiwan 2004
Taipai,Twain, for more informationn email

US Bay area: Jun. 17, 6:00-9:00PM, PMIEEE EDS/SCV Evening Seminar in Bay area, CA, National Semiconductor, Building 31, 955 Kifer Rd. Sunnyvale, CA

Europa: Germany, June 20, 2004, 7th International Conference on Nanostructured Materials, Wiesbaden, Germany, more information

Asia: Tokyo, Japan, June 30,2004, 14th FPD Manufacturing Technology Expo & Conference/Finetech, Tokyo, Japan, more information

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

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