Navigation Links
UCLA researchers demonstrate fully printed carbon nanotube transistor circuits for displays
Date:11/30/2011

Since the invention of liquid crystal displays in the mid-1960s, display electronics have undergone rapid transformation. Recently developed organic light-emitting diodes (OLEDs) have shown several advantages over LCDs, including their light weight, flexibility, wide viewing angles, improved brightness, high power efficiency and quick response.

OLED-based displays are now used in cell phones, digital cameras and other portable devices. But developing a lower-cost method for mass-producing such displays has been complicated by the difficulties of incorporating thin-film transistors that use amorphous silicon and polysilicon into the production process.

Now, researchers from Aneeve Nanotechnologies, a startup company at UCLA's on-campus technology incubator at the California NanoSystems Institute (CNSI), have used low-cost ink-jet printing to fabricate the first circuits composed of fully printed back-gated and top-gated carbon nanotubebased electronics for use with OLED displays. The research was published this month in the journal Nano Letters.

The startup includes collaborators from the departments of materials science and electrical engineering at the UCLA Henry Samueli School of Engineering and Applied Science and the department of electrical engineering at the University of Southern California.

In this innovative study, the team made carbon nanotube thin-film transistors with high mobility and a high onoff ratio, completely based on ink-jet printing. They demonstrated the first fully printed single-pixel OLED control circuits, and their fully printed thin-film circuits showed significant performance advantages over traditional organic-based printed electronics.

"This is the first practical demonstration of carbon nanotubebased printed circuits for display backplane applications," said Kos Galatsis, an associate adjunct professor of materials science at UCLA Engineering and a co-founder of Aneeve. "We have demonstrated carbon nanotubes' viable candidacy as a competing technology alongside amorphous silicon and metal-oxide semiconductor solution as a low-cost and scalable backplane option."

This distinct process utilizes an ink-jet printing method that eliminates the need for expensive vacuum equipment and lends itself to scalable manufacturing and roll-to-roll printing. The team solved many material integration problems, developed new cleaning processes and created new methods for negotiating nano-based ink solutions.

For active-matrix OLED applications, the printed carbon nanotube transistors will be fully integrated with OLED arrays, the researchers said. The encapsulation technology developed for OLEDs will also keep the carbon nanotube transistors well protected, as the organics in OLEDs are very sensitive to oxygen and moisture.

The technology incubator at the CNSI was established two years ago to nurture early-stage research and to help speed the commercial translation of technologies developed at UCLA. Aneeve Nanotechnologies LLC has been conducting proof-of-concept work at the tech incubator with the mission of developing superior, low-cost, high-performance electronics using nanotechnology solutions that bridge the gap between emerging and traditional platforms.


'/>"/>
Contact: Jennifer Marcus
jmarcus@cnsi.ucla.edu
310-267-4839
University of California - Los Angeles
Source:Eurekalert

Related biology technology :

1. Understanding the science of solar-based energy: more researchers are better than one
2. Researchers decode viral process that prepares cells for HIV infection
3. Dartmouth researchers advance cellulosic ethanol production
4. Researchers develop new model for cystic fibrosis
5. Use it or lose it? Researchers investigate the dispensability of our DNA
6. Sigma-Aldrich and the University of Illinois Offer New Boronic Acid Surrogates to Researchers Worldwide Through Licensing Agreement
7. Researchers write protein nanoarrays using a fountain pen and electric fields
8. Researchers show how to stamp nanodevices with rubber molds
9. The Lancets New Online Medical Journal Helps Clinicians and Medical Researchers Find Practice-Changing Evidence Quickly and Easily
10. Ultrafast lasers give CU-Boulder researchers a snapshot of electrons in action
11. VAP(R) Cholesterol Test Helps Researchers Identify Treatment Effects of Combination Therapy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/23/2020)... (PRWEB) , ... January 22, 2020 , ... ... new developments in the cosmetic surgery industry at two recent North American investor ... investors at the Canaccord Genuity Medical Technologies & Diagnostics Forum on November 21, ...
(Date:1/22/2020)... Wis. (PRWEB) , ... January 21, 2020 , ... ... the hiring of Darrell Taylor as Southern Midwest Region Industrial and Institutional (I&I) ... the SporActiv™ product line. , Darrell brings over 30 years of ...
(Date:1/22/2020)... ... 21, 2020 , ... QCDx , a private biotech company that has ... today announced the sale of the proprietary RareScope™ instrument to the Carole and Ray ... clinical cancer research. , “The RareScope can detect and isolate intact and live Circulating ...
(Date:1/10/2020)... ... January 09, 2020 , ... Phlexglobal, ... announced the acquisition of Cunesoft, a move that expands the company’s portfolio of ... life sciences companies. , Based in Munich, Germany, Cunesoft provides intelligent software and ...
Breaking Biology Technology:
(Date:1/27/2020)... TORONTO (PRWEB) , ... January 27, 2020 , ... On ... of Information Solutions Life Sciences, Reed Tech and Richard Castle, Global Account ... addition to discussing the procedure, other topics include EU MDR timing deadlines, best practices ...
(Date:1/23/2020)... ... January 23, 2020 , ... ... mature red blood cells from stem cells. The red blood cells are ... under strictly controlled conditions, for transfusion therapy and replaces the need for a ...
(Date:1/22/2020)... ... January 21, 2020 , ... ... chain operations, developing transport validation strategies, supporting global regulatory applications, and executing ... and the Houston Business Journal as a fastest growing company, and ISO ...
Breaking Biology News(10 mins):