White top-emitting organic light-emitting diodes employing tandem structure

Research Paper Abstract:

A high-efficiency white top-emitting organic light-emitting diode (TOLED) is demonstrated by introducing tandem structure. The microcavity effects are used to finalize the configuration of the tandem white TOLED. The resultant tandem white TOLED emits a complementary-color white light with the Commission Internationale de L'Eclairage coordinates of (0.39, 0.43) and the color-rendering index of 70, which retains high color stability towards driving voltage. The maximum forward viewing external quantum efficiency and current efficiency of the device are 16.9% and 41.1 cd/A, respectively. The employment of the tandem structure can be an alternative method to fabricate white TOLEDs for practical applications.

Source Link: http://apl-oep.aip.org/resource/1/aploep/v5/i9/p216_s1?bypassSSO=1

Agreement to Acquire Power Analog Microelectronics

Diodes Incorporated Enters into Agreement to Acquire Power Analog Microelectronics

09/28/2012

PLANO, Texas - September 28, 2012 - Diodes Incorporated (Nasdaq: DIOD), a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic and analog semiconductor markets, today announced that it has entered into an agreement to acquire Power Analog Microelectronics, Inc. The acquisition is expected to close in the fourth quarter of 2012. The terms of the transaction were not disclosed.

Power Analog Microelectronics (PAM) is a provider of advanced analog and high- voltage power ICs. The company's product portfolio includes Class D audio amplifiers, DC-DC converters and LED backlighting drivers. PAM was founded in Silicon Valley in 2004 and has technical and business centers in Shanghai, Shenzhen, Taipei and Tokyo.

Dr Keh-Shew Lu, President and CEO of Diodes said, "The acquisition of Power Analog Microelectronics will strengthen our position as a global provider of high- quality analog products by expanding Diodes' product portfolio with innovative "filter-less" digital audio amplifiers, application-specific power management ICs, as well as high-performance LED drivers and DC-DC converters. The highly complementary nature of our businesses will provide immediate benefits to our customers, while generating long-term value for our shareholders and employees."

Johnston C. Chen, President and CEO of Power Analog Microelectronics added, "With both companies focused on high-efficiency, space-saving analog IC products, there are tremendous synergies to be leveraged through the acquisition. The resulting expansion of product portfolios and access to a larger customer base and even greater application expertise are clear advantages to next generation product design."

For further information, visit the Company's website at www.diodes.com.

About Diodes Incorporated

Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor's SmallCap 600 and Russell 3000 Index company, is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic and analog semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors; power management devices, including LED drivers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. The Company's corporate headquarters, logistics center, and Americas' sales office are located in Plano, Texas. Design, marketing, and engineering centers are located in Plano; San Jose, California; Taipei, Taiwan; Manchester, England; and Neuhaus, Germany. The Company's wafer fabrication facilities are located in Kansas City, Missouri and Manchester, with two manufacturing facilities located in Shanghai, China, another in Neuhaus, and two joint venture facilities located in Chengdu, China. Additional engineering, sales, warehouse, and logistics offices are located in Fort Worth, Texas; Taipei; Hong Kong; Manchester; and Munich, Germany, with support offices located throughout the world. For further information, including SEC filings, visit the Company's website at www.diodes.com.
Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995: Any statements set forth above that are not historical facts are forward- looking statements that involve risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Such statements include statements regarding our expectation that: the acquisition is expected to close in the fourth quarter of 2012; the acquisition of Power Analog Microelectronics will strengthen our position as a global provider of high-quality analog products by expanding Diodes' product portfolio with innovative "filter- less" digital audio amplifiers, application-specific power management ICs, as well as high-performance LED drivers and DC-DC converters; the highly complementary nature of our businesses will provide immediate benefits to our customers, while generating long-term value for our shareholders and employees; and there are tremendous synergies to be leveraged through the acquisition. Potential risks and uncertainties include, but are not limited to, such factors as: we may not be able to maintain our current growth strategy or continue to maintain our current performance, costs and loadings in our manufacturing facilities; risks of domestic and foreign operations, including excessive operation costs, labor shortages, higher tax rates and our joint venture prospects; unfavorable currency exchange rates; our future guidance may be incorrect; the global economic weakness may be more severe or last longer than we currently anticipated; and other information detailed from time to time in the Company's filings with the United States Securities and Exchange Commission.
Recent news releases, annual reports and SEC filings are available at the Company's website: www.diodes.com. Written requests may be sent directly to the Company, or they may be e-mailed to: diodes-fin@diodes.com.


Source Link: http://diodes.com/investor/business_news/index.php?nw:e=5&nw:id=2592

Havells-Sylvania Launches Lighting Controls Business Unit

Havells-Sylvania, a leading, global, full-spectrum provider of professional and architectural lighting, has further expanded with another strand to its portfolio by launching a new business unit dedicated to lighting control systems. Launching a complete range of both occupancy and absence detectors the new unit sits alongside the company’s extensive range of architectural luminaires and reinforces Havells-Sylvania’s credentials as a one-stop shop lighting solutions provider for the specification channel.

Heading up the new business unit is Sam Woodward, a new appointment to Havells-Sylvania who in his position as SBU Manager for Lighting Control Systems, will be drawing on his experience across the professional lighting market. He sees the new division as a natural fit with the existing Havells-Sylvania lighting portfolio and good news for the end-user:

“Our extensive knowledge of the lighting eco-system, from lamps to luminaires, and now controls as well, means we are well placed to understand the savings that lighting controls can bring to unoccupied spaces,” he comments. “Our Microwave and PIR occupancy and light sensors reduce lighting related energy costs by up to 60% and cut carbon emissions which will help companies comply with the building regulations and the growing burden of legislation.

"This range highlights our expertise as a complete lighting solutions supplier whilst offering our customers something new. This is just the beginning for us in this area; we intend to grow over the next few years to help our clients by offering the complete package of lighting control solutions.”

To coincide with the launch of the new business unit Havells-Sylvania has created a comprehensive brochure outlining its new range and the benefits of using occupancy sensors.

A copy of the brochure can be obtained by visiting www.havells-sylvania.com, telephoning 0870 606 2030 or emailing uk.catalogues@havells-sylvania.com 

Distributed Intelligence in LED Lighting

 

 Digital Lumens has secured an additional patent for its distributed LED control technology, which continuously optimizes energy usage and forms the core of the Digital Lumens Intelligent Lighting System™. This breakthrough approach fundamentally redefines lighting to deliver the greatest energy efficiency in the market. The patent further cements Digital Lumens’s market leadership in intelligent industrial lighting.

“We’re proud that the Patent and Trademark Office continues to recognize the innovation we are bringing to the lighting market,” said Brian Chemel, co-author of the patent and CTO of Digital Lumens. “Digital Lumens invests heavily in its intellectual property portfolio to create tangible and differentiated value. For customers, this technology translates into dramatic energy savings and unprecedented operational insight that combine to raise expectations of what is possible with lighting, and to drive rapid adoption of LEDs in this massive market.”

Registered as #8,232,745 through the U.S. Patent and Trademark Office (USPTO), the patent application received prioritized review under the USPTO’s Green Technology Pilot Program, which was established to accelerate energy conservation, the development and deployment of green technologies, create green jobs and promote U.S. competitiveness in this vital sector. The technology covered by this patent is in all products the company has shipped.

Specifically designed for industrial lighting environments, the Digital Lumens Intelligent Lighting System features smart LED-based fixtures – all with integrated occupancy and daylight sensors – that are wirelessly networked and centrally managed to deliver light precisely when and where it is needed. LightRules, the Digital Lumens management software, provides comprehensive web-based reporting of energy usage and savings alongside a simple interface for creating and modifying lighting system settings.

About Digital Lumens
Digital Lumens develops Intelligent LED Lighting Systems that are proven to reduce industrial customers’ lighting-related electricity expenses by up to 90%.  With this System — smart lights, wirelessly networked together and centrally managed — the company is defining a new class of LED lighting that maximizes both delivered light and energy efficiency. For more information, please visit www.digitallumens.com.