Category Archives: Flexible Displays

Chip renaissance?


March 11, 2004

A strong sales surge in the second half of 2003 pushed the semiconductor industry solidly into a sustained double-digit growth pattern that will ensure chip suppliers add to their gains in 2004. iSuppli’s final estimate of 14.2 percent growth corresponds closely to its preliminary estimate from December 2003 of a 13.9 percent increase for the year.

(March 11, 2004) Champaign, Ill.&#8212Printing circuits on sheets of plastic may offer a low-cost technique for manufacturing thin-film transistors for flexible displays, but maximizing the performance of such devices will require a detailed, fundamental understanding of how charge flows through organic semiconductors.

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Aug. 7, 2003 — If the second quarter is any guide, some small tech companies are “growing up.”

Late stage investments accounted for more small tech venture dollars than in previous quarters and experts say small tech startups — especially in nanotech — are defining themselves more by the markets in which they operate than by the technologies they use.

“Companies have refined their market strategies,” said Alex Wong of Apax Partners, a venture capital firm active in small tech. “For example, rather than saying they are working on energy, electronics or life sciences, I’m now listening to companies talk about solar cells, chemical sensors and implantable medical devices.”

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Second-quarter data show that late stage funding in micro- and nanotechnologies increased significantly compared to 2002 and the first quarter of 2003, according to a Small Times analysis of the PricewaterhouseCoopers/Thomson Financial Venture Economics/National Venture Capital Association MoneyTree Survey, which tracks venture activity in the United States.

Of the $242 million invested in 23 small tech funding events in the second quarter, $158 million went to late stage companies in seven events. As a result of the later, larger rounds, small tech accounted for 5.6 percent of the total $4.3 billion deployed in the period — a significant increase over the first quarter’s $162.2 million.

“The early stage companies that were funded over the past few years are growing up,” Wong said.

Three of them, in fact, were responsible for nearly half the second quarter’s dollars. Late stage rounds from California companies Nanosys Inc. ($38 million reported in two funding events), Infinera Inc. ($40 million, one event), and Catalytic Solutions Inc. ($32 million, one event) were the largest small tech rounds of the quarter.

Nanosys is developing nanotech-enabled systems for photovoltaics, flexible electronics and biosensing applications, while Catalytic Solutions uses nanostructured materials in catalyst formulations. Infinera is developing microphotonic chips.

While large late-stage companies fattened the overall dollar figure, they also pumped up California, which netted $160 million in 11 events, versus $108.3 million in nine events for the first quarter. Massachusetts was a distant second with $27.5 million invested in three events.

Biotech topped the industry list, with nearly $112 million in nine funding events, ahead of the Networking and Equipment and Industrial/Energy categories.

Venture capitalists say small tech is attracting an increasing amount of investor attention as it matures. “The activity level is high,” Wong said. “The momentum is there from the point of view of companies sending business plans with a nanotechnology flavor.”

Alexei Andreev, a research associate active in nanotechnology at the venture capital firm Draper Fisher Jurvetson, agreed that there is increasing competition among venture firms for nanotech deals. That trend, he said, amounts to a slight shift in the balance of power between entrepreneurs and the venture capitalists who fund them.

“The situation is changing,” Andreev said. “It’s moving from an investor’s market to a more balanced situation.”

Barry Kramer is a partner with Fenwick & West LLP who issues a quarterly report on venture deal terms in the San Francisco Bay area. According to Fenwick’s Q1 report, the tough terms that venture investors demanded from entrepreneurs in 2002 remained through the first quarter of 2003. However, the report concluded that the venture market could improve in response to better performance in public markets and other factors.

“Based on preliminary Q2 information,” Kramer said, “the conclusion we made at the end of Q1 that terms would start to improve in Q2 seems to be occurring.” However, he cautioned, all the data are not yet in. His second quarter report is due out later this month.

That’s not to say the pendulum is swinging back quickly. “The siege mentality has kind of passed,” Wong said, but “nanotechnology is not at the frenzy level. People are being very reasonable with pricing.”

If there is a decidedly “rational” exuberance for small tech, it could be just in time for companies that foresee a revived exit market.

“We’re seeing some uptick in the public markets,” Wong said. Venture capitalists and entrepreneurs are also reporting more interest from large companies in strategic investments and collaborations, both of which can be a path to acquisition.

However, Wong said, investors are still preparing themselves for the long haul and are looking more carefully at the total cost of a project rather than just the initial investment. “They’re taking a more holistic view.”

Kramer, for his part, takes a holistic view of his own, linking larger economic realities to the private equity market. “So long as Nasdaq continues to improve and so long as there are not significant negative events in the outside world, I think the venture and entrepreneurial markets will continue to improve,” he said.

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July 25, 2003 — Imagine your kitchen blender conks out the day you’re hosting a large cocktail party. You search an online catalog, decide on a model, and click the “buy” button. But instead of waiting three days for the appliance to be shipped to your door, a new kind of printer on your desk springs into action. Layer by layer, the miraculous machine squirts out various materials to form the chassis, the electronics, the motors — literally building the blender for you from the bottom up in a matter of hours.

Call it desktop manufacturing. For gadget geeks in need of instant gratification, it’s a miracle. For designers deep in the iterative prototyping process, it’s a revolution in product development. And thanks to small tech, it’s becoming a reality.

University of California, Berkeley engineering professor John Canny and his colleagues are building such a printer. They call the technology “polymer mechatronics” or, more simply, flexonics. The revolutionary approach to desktop manufacturing is enabled by recent advances in 3-D printers, organic electronics and polymer actuators.

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Three-dimensional printers are commonly used to make prototypes of new product designs. For example, a designer may load a digital design into a Fused Deposition Modeling machine. The FDM then extrudes thin beads of ABS plastic in .01-inch layers, until you have a completed passive functional part or device. While the printers are dropping in price, the leap from producing passive to active devices is monumental. That’s where organic electronics come into play.

Organic electronics were born in the 1970s when researchers discovered that chemically doping organic polymers, or plastics, increases their electrical conductivity. Since then, researchers have worked to develop the most effective and inexpensive organic compounds that can be patterned on flexible substrates to create useful circuits. In the private sector, companies ranging from Bell Labs to IBM to UK startup Plastic Logic are also working to develop quality organic transistors that are fabricated far more cheaply than silicon circuits. Organic semiconductors will most likely first hit the market in the form of inexpensive radio-frequency identification (RFID) tags and flexible display screens.

Canny’s co-investigator in Berkeley’s flexonics effort, Vivek Subramanian, is one of many researchers harnessing the microfluidic precision of inkjet printing technology to deposit organic semiconductors in desired patterns. The key ingredient in Subramanian’s organic circuits is “liquid gold.” Synthesized in his laboratory, liquid gold consists of gold nanocrystals that are only 20 atoms across and melt at 100 degrees Celsius, 10 times lower than normal.

The gold nanocrystals are encapsulated in an organic shell of an alkanethiol (an organic molecule containing carbon, hydrogen and sulphur) and dissolved in ink. As the circuit is printed on plastic, paper or cloth using inkjet technology, the organic encapsulant is burned off, leaving the gold as a high-quality conductor.

Combining Subramanian’s circuit printing technology with a 3-D printer enables electronics to be embedded within the housing of the device being printed. The chassis and the electronics are fabricated as one single structure.

The next step is to add the actuators that provide electromechanical capabilities to the devices — for instance, a mechanism that causes the blender’s blades to spin when switched on. For this, Canny plans to fill inkjet cartridges with electroactive polymers that contract when zapped with a voltage, enabling components to flex in desired directions. Additionally, the polymers generate a voltage when compressed, so buttons and switches can also be embedded within the printed devices.

While Subramanian hones his organic semiconductors, Canny and his graduate student Jeremy Risner are designing a “vocabulary” of mechanical components — joints, grippers, transmission systems — suited for the 3-D printing process.

Flexonics is still in its infancy, but the technology’s potential raises questions about what it will mean to be a consumer in an era of devices-on-demand. You’d no longer pay for a product, Canny says, you’d pay for plans. I look forward then to a generation of do-it-yourself industrial designers, tinkerers who tweak commercial product designs to improve and customize them. How will I access the fruits of their labor? Peer-to-peer plan networks, of course, where designs for blenders and mobile phones and TV remote controls are swapped like so many MP3s.

KIBBUTZ EINAT, Israel, June 27, 2001 — If Baruch Levanon has his way, billions of batteries may soon be rolling off the printing presses just like your morning newspaper.

Levanon is chief executive of Power Paper Ltd., a start-up company located in Kibbutz Einat, a communal settlement just outside Tel Aviv, Israel. His company has patented a process of mass-producing batteries on any thin, flexible substrate — even paper.

Baruch Levanon, chief executive of

Power Paper Ltd. In Israel, conceived

of paper-thin power sources while

designing a drug delivery patch for

a pharmaceutical company in the

early 1990s.

Experts are unsure whether such a power source would solve the problem of how to deliver power to micro and nanoscale devices — one of the biggest impediments to further development of small technology. Nevertheless, application development is already under way, and Levanon believes it is just a matter of time before his slender batteries are used to power applications ranging from smarter smart cards to MEMS-driven health-care devices.

“Thin and flexible microelectronics is the vision of Power Paper,” he says. “The idea is that today, with increasing miniaturization and microelectronics getting smaller and smaller, you can really take it one step further to the thickness of paper.”

The 52-year-old Levanon, once an aeronautic engineer, first conceived of paper-thin power sources while designing a drug delivery patch for a pharmaceutical company in the early 1990s. These patches included a small microprocessor and minipump to regulate injections. But they were bulky and uncomfortable, and the batteries were the culprit.

“This was the drive for Power Paper,” says Levanon, explaining how he set out to create a battery that would be “totally integrated” into a device. Ultimately, these batteries could turn such a device into a flexible patch, embedded with a MEMS syringe, says Levanon, waving a Band-Aid-like dummy.

Levanon worked on the concept between 1995 and 1997. After his batteries reached practical performance levels and a patent was secured, he set up Power Paper with $1.5 million in venture capital. He has since filed for dozens of patents for applications. Power Paper received another $3 million financing round in 1998 and recently closed another undisclosed round.

Power Paper’s batteries stuck to conventional battery-making architecture yet also broke the mold — literally. The batteries are 0.5mm thick and made of five layers of material, a cathode on one side, anode on the other, two layers of conductors in between and an electrolyte core. But unlike conventional batteries, its secret formula allows it to function without a bulky metal casing. Despite the exposure, it is also environmentally friendly and boasts a shelf life of 2.5 years.

Levanon claims that competitors — including traditional battery companies and ECR – Electrochemical Research Ltd., another Israeli group, have made smaller rechargeable batteries but they are still stuck inside inflexible metal casings.

Power Paper’s batteries are not yet rechargeable, but with 1.5 volts and a capacity of almost 20mAh (milliamps per hour) per square inch, they are similar to coin-sized conventional batteries used in watches and calculators. They can also be designed to take up more area and produce more power. Still, it is currently not suitable to power-hungry applications like cellular phones.

Later this year, the batteries will already be invisibly on the market inside novelty items such as electronic greeting cards and mousepads, which are being produced at the company’s Hong Kong subsidiary.

But Levanon gets much more excited talking about potential applications for smart cards, smart tags and health-care devices.

Together with KSW Microtec, a German microelectronics company, Power Paper has developed precision heat-sensitive tags. These could be used to monitor the temperature on blood bags when they are transferred to hospitals, saving shipments that often are trashed due to temperature fluctuations.

Credit cards equipped with a thin-screen that could display account information are also a potential application.

Levanon also hopes to see over-the-counter health-care applications on the shelves by 2003, though drug-delivery applications involving other types of medicines will require FDA approval and will take longer. In the future, tiny MEMS syringe systems could inject drugs at specific dosages.

For all applications, the key to commercial success is the printing production process, which allows the batteries to be produced for just a few cents apiece, depending on the design.

Small tech experts agree that power is a barrier to shrinking devices. According to Stephen Casalnuovo, technical staff member at Sandia National Laboratories in Albuquerque, N.M., power remains one of the “outstanding problems” in building microsystems.

“You can build MEMS, microdevices, microsensors and integrated circuits the size of a fingernail, but when it comes down to how are you going to power them, the battery becomes the largest component of the system and it wears down first,” he says.

The problem can be demonstrated, he says, by looking at the MEMS device inside airbag sensors — powered by a fat car battery.

Although some researchers are trying to integrate batteries into silicon wafers and MEMS, Casalnuovo points out that smaller batteries also means smaller capacity. These techniques are “limited by a chemistry”, he explains, which is why researchers are also working on energy harvesting techniques such as solar cells.

Professor Kenneth Snowdown, director of the Centre for Nanoscale Science and Technology at the University of Newcastle upon Tyne, a leading UK research institute, says power is “an annoyance” to researchers. “The ultimate challenge for nanotechnology is to try and harness the environment and to hijack or steal power in much the same way as miniature components do in living systems in the human body,” he says.

Levanon argues that thin batteries can help solve the problem by being more easily integrated into the shape of a MEMS product — even if not down to the size of a microdevice.

Related story: Instant circuit: Just add nanoparticles and hit ‘print’

April 24, 2003 — Nanosys Inc. has raised $30 million in the first close of a second round of venture financing despite a lackluster funding environment riddled with newly minted skeptics. Larry Bock, the company’s president and chief executive said the company will close on additional funds in a few weeks.

 

The round brought on a slew of new investors, including CDIB BioScience Ventures, Chiao Tung Bank, China Development Industrial Bank, Harris & Harris, Lux Capital, Quanta Computer and SAIC Venture Capital Corp.  Previous investors that also participated include a bevy of blue chip venture funds, including ARCH Venture PartnersCW GroupPolaris Venture Partners, Venrock Associates, Prospect Venture Partners and Alexandria Real Estate Equities.

 

Nanosys previously announced a $15 million round in February 2002, the company’s first major round, of which Bock said the company still has $10 million. Prior to that, Nanosys raised $1.7 million in initial funding in October, 2001. In addition, the company has secured about $14 million in non-equity grants and contracts, according to Bock. In January, the company announced a deal with Matsushita Electric Works to develop solar cells for the Asian building materials market.

 

The company’s three development programs cover chemical and biological sensors, photovoltaics and macroelectronics. Macroelectronics, or large area flexible electronics, can be used in applications as diverse as RFID tags, wearable electronics and flat panel displays. Bock said the company is about two-and-a-half years away from a product. The first will probably be nucleic acid sensors for drug development. Nanosys has just under 30 full-time employees on its scientific staff.

 

The science behind the products — inorganic nanomaterials such as nanowires and nanorods — was developed largely in a number of academic research labs. The company’s scientific founders include Harvard chemists Charles Lieber and Hongkun Park and University of California at Berkeley chemist Paul Alivisatos.

 

Bock said he expects current financing will be sufficient to carry the company into the black and that the company will soon announce new strategic partnerships.

Dec. 11, 2002 – Wilmington, DE, and Ewing, NJ – DuPont Displays, a business unit of DuPont and a developer and manufacturer of polymer OLED displays, together with Universal Display Corp. (UDC), an innovator of OLED technologies, have signed a joint development agreement to create a new generation of soluble OLED materials and technology.

UDC and DuPont have also executed a cross-license agreement, under which DuPont will make an initial payment to UDC and pay UDC a running royalty for products sold that utilize UDC’s background phosphorescent emitter, transparent cathode, and ink jet printing technologies.

The joint development agreement establishes an IP collaboration aimed at combining elements of both small molecule OLED and solution processible OLED research. DuPont intends to use the results of this strategic alliance to expand its OLED manufacturing capability. UDC, in turn, will have the exclusive right to license the results of the collaboration to third parties.

Moisture Barrier Bags


February 1, 2000

Statshield EMI/RFI High Moisture Barrier Bags provide a dry ESD-protected package for ESDS devices. The moisture transmission rate is < 0.005 gr, and the 6.5 mil thickness offers over 30 pounds of puncture resistance. Static dissipative properties comply with EIA-583-1 and available sizes range from 4 x 6≤ to 18 x 24≤. Desiccant and humidity indicator cards are available.

Desco Charleswater

Chino, Calif.

Moisture barrier


May 1, 1999

Moisture barrier

The 3300 Moisture Barrier Bag offers long-term protection from moisture, high-frequency protection and static shielding to protect sensitive electronic components or parts. According to the manufacturer, the bag is constructed of a multi-layer 3.6 mil film that provides puncture and tear resistance, meets the requirements of EIA-583 Class I and contains no amines, amides or N-Octanoic acid. Bags are available in standard and custom sizes.

3M Electronic Handling and Protection Division, Austin, TX

(800) 814-8709

Packaging products


June 1, 1998

Packaging products

These cleanroom packaging products help control contamination as well as provide ESD and moisture barrier protection. The line includes clear barrier laminates; high barrier foil laminates; static protective moisture barrier; low, medium and high density polyethylene; static shielding bags. All items are manufactured in a Class 100 cleanroom certified to Federal Standard 209E.

Richmond Technology Inc., Redlands, CA

(909) 794-2111