Sumitomo Chemical shows printed flexible OLED panel
03 June 2013

According to a Tech-On news report Sumitomo Chemical recently exhibited a flexible printed OLED lighting panel at the recently held Automotive Engineering Exposition (AEE) 2013 in Yokohama, Japan.

Sumitomo Chemical showed several flexible printed polymer OLED panels, these panels had been manufactured using both with a ink-jet printing and roll-to-roll (slot-die) coating technology at ordinary temperatures and pressures.

Printed polymer OLED lighting on flexible substrate

Figure: Sumitomo - Printed polymer OLED lighting on flexible substrate

OLED lighting devices are being actively developed both in and outside Japan [Editor's Note: assumed to be Cambridge Display Technology]

Flexible and curved OLED lighting is very attractive to designers, and offers them greater flexibility in the development of innovative and creative lighting products. Sumitomo Chemical specifically said that they expect these OLED panels to be used as ceiling and floor illumination.

In order to enter volume production Sumitomo Chemical intends to further extend the lifetimes of the emissive polymers, improve overall brightness and improve production yields.

The company expects to use both ink-jet and roll-to-roll technologies when the lamp is commercialised.

A spokesperson for Sumitomo Chemical said, "Many other companies are using small molecule. In many cases, small molecules require vacuum deposition and, thus, are not very much suited for printing. On the other hand, printing technologies can be easily applied to our polymer OLEDs."

Philips to license OLED display patents
03 June 2013

Intellectual Property Exchange International, Inc. (IPXI) has recently announced that it will conduct two public web presentations on June 5 that will unveil IPXI's first Unit License Right (ULR) contract offering, present important offering details and launch the marketing campaign for the ULR contracts.

This first-of-its-kind offering will enable operating companies, investors and other market participants to buy and sell ULR contracts covering a large portfolio of more than 600 patent assets, including 225 issued patents worldwide, related to organic light-emitting diode (OLED) technology for display screen applications. The portfolio is the result of nearly 20 years of research in the field by Koninklijke Philips N.V. (Philips).

CPI produces large area small molecule and polymer OLED lighting demonstrators
03 June 2013

Researchers at the UK's Centre for Process Innovation (CPI) have recently produced defect free OLED lighting demonstrators with emissive areas of greater than 250cm2.

The device structure produced is hybrid in construction consisting of a solution processed hole injection layer, and a small molecule emissive layer deposited by a co-evaporation technique.>/p>

Slot die coating technology has been utilised to provide a large area, defect free, thin film coating. An encapsulation process utilising glue dispense and getter placement completes the panel assembly to maximise lifetime and device performance.

Printed hybrid large area OLED lighting panel

Figure: CPI - Printed hybrid large area OLED lighting panel

DOE announces US$10 million of new investments to drive cost-competitive OLED and LED lighting
03 June 2013

The U.S.DoE has announced two OLED lighting manufacturing research and development projects to support energy efficient lighting products. The projects will focus on reducing manufacturing costs, while continuing to improve the quality and performance of organic light-emitting diodes (OLEDs).

While life-cycle costs are attractive, the initial price OLED lighting is currently higher than the price of traditional lighting. The projects announced today will help achieve significant cost reductions in manufacturing equipment and processes, while improving lighting quality and performance

OLEDWorks : $1 million investment

The OLEDWorks project will develop and demonstrate new spray printing equipment that reduces overall manufacturing costs and could help support cost-competitive mass production. This technique will give manufacturers greater spray control to take full advantage of expensive organic materials and maximise the visible light produced from this material.

Panasonic develops 114 lm/W white OLED for lighting
27 May 2013

Panasonic Corp. has announced that the company has developed a white Organic Light Emitting Diode (OLED) with an efficiency of 114 lm/W the panel areas was 1 cm2. In addition, Panasonic also achieved a luminous efficiency of 110 lm/W with a larger 25 cm2 device.

In order to achieve such high efficiency with a white OLED, Pansonic research teams focused on improving "light extraction technology" and an "all phosphorescent white OLED."

High efficiency white OLED

Figure: Panasonic - High efficiency white OLED

The Panasonic development contains the following features:

  • Approximately 2.5 times improvement in the light extraction efficiency about 50%
  • Simultaneous achievement of high efficiency and long lifetime - L50 (over 100,000 hours)

These features have been achieved with the following technologies:

  • Built-up Light Extraction Substrate (BLES) technology by the optimised arrangement of the film, glass and air for the suppression of light confinement in the OLED
  • Optimal design of stacked organic emitting layers with high-efficiency phosphorescent materials

According to Panasonic, typically the organic layers have higher refractive indices than those of the glass used for the substrate and air. This means only about 20% of the total generated light, wihtin the OLED, can be extracted because of total internal reflection at interfaces. Many approaches to light extraction are being pursued by OLED developers, and include a variety of technologies such as a light extraction film attached onto the substrate and a light-scattering structure placed between organic layers and the substrate however these have not produced more than 40% improvement.

OLEDs are capable of emitting any color including white when a voltage is applied by combining organic materials that emit various colors such as red, green, and blue. The soft surface luminescence makes OLEDs suitable for lighting a wide area, and along with the benefits of being not overly bright when viewed directly and a thin and lightweight structure, they are receiving attention as the next generation light source.

Lighting devices equipped with the high efficiency OLEDs are considered to achieve a luminous efficiency comparable to or higher than that of fluorescent lamps (approx. 60-80 lm/W) or LED lighting fixtures (approx. 80 lm/W) currently available in the market. Further, a wide variety of applications are expected for OLED devices, including use in general lighting. White OLED lighting will create new value in people's daily lives and has great potential for realizing a comfortable and ecological lifestyle.

Source: Panasonic

The development was conducted in the "Fundamental Technology Development of Next Generation Lighting of High-efficiency and High-quality" project since March 2010 under a contract with the New Energy and Industrial Technology Development Organization, with Idemitsu Kosan, Tazmo, Choshu Industry, Ltd., Yamagata University, and Aoyama Gakuin University.

The high-efficiency phosphorescent materials were provided by the Universal Display Corporation of the United States.

Panasonic said they hold 30 patents in Japan and 17 overseas patents (including those pending) for this development.   

Samsung sets up patent firm in US
27 May 2013

The Korean Times recently reported that Samsung Display had, in March 2013, established a separate company specialising in trading and developing patents in the United States. According to company officials this is the first time the Samsung has set up an independent body focsued solely on patents.

The display-making affiliate of Samsung Group said it invested $25 million to launch Intellectual Keystone Technology (IKT) in Washington D.C. in a move to beef up its patent-related business. The Samsung owns 100 percent of IKT.

Apparently at the end of April IKT purchased display-related patents previously owned by Japan’s Seiko Epson, although Samsung declined to give details of the transaction.

A group spokesperson said, "Patents are a good source of innovation and we also need to protect our intellectual property by strengthening our patent-related business."

Blackbody opens world's first OLED Lighting showroom
27 May 2013

Blackbody has announced they have opened the world's first OLED lighting showroom. This new space will be dedicated to creativity and will embody this new vision of lighting, made possible by OLED technology developed by Blackbody.

Located in Soho New York the showroom will enable OLED technology to be accessible by everyone. It will enable visitors to admire not only the technological progress of OLEDs but also the expertise offered by Blackbody in partnership with famous international designers, and available for sale to the general public as well as to architects and American companies.

OLED Lighting showroom in New York

Figure: Blackbody - OLED Lighting showroom in New York

Philips installs a large-scale OLED lighting luminaire at their US Light Application Centre
27 May 2013

Philips have recently install a large OLED lighting luminaire at their Light Application Centre in the US. The installed LivingSculpture consists of 36 separate modules, each with their own 16 OLED panels - a total of 576 individal white OLED panels.

LivingSculpture OLED luminaire

Figure: Philips - LivingSculpture OLED luminaire

VICOSC prints A3 size organic photovoltaic devices
20 May 2013

Research Scientists from the Victorian Organic Solar Cell Consortium (VICOSC) have produced the largest flexible, organic solar cells in Australia. These A3 size solar panels are 10 times larger than what they were previously able to make, and it is all down to the newley installed printer on their pilot line.

The new printer, worth A$200,000, is a big step up for the VICOSC team. In just three years they have gone from making cells the size of a fingernail, then to cells 10cm2 and now they can produce organic photovotlaics that are 30cm wide.

OPV production facility

Figure: VICOSC - OPV production facility

Dr. David Jones, Prof. Andrew Holmes, and Dr. Scott Watkins

Figure: VICOSC - Dr. David Jones, Prof. Andrew Holmes, and Dr. Scott Watkins

Dr David Jones, VICOSC project coordinator, said:

  • Printing cells on such a large scale opens up a huge range of possibilities for pilot applications.
  • There are so many things we can do with cells this size
  • We can set them into advertising signage, powering lights and other interactive elements
  • We can even embed them into laptop cases to provide backup power for the machine inside

Dr David Jones continues:

  • One of the great advantages of the group's approach is that they're using existing printing techniques, making it a very accessible technology
  • We are using the same techniques that you would use if you were screen printing an image on to a T-Shirt
  • Using semiconducting inks, the researchers print the cells straight onto paper-thin flexible plastic or steel
  • With the ability to print at speeds of up to ten metres per minute, this means they can produce one cell every two seconds
  • As we continue to scale-up the equipment, the application possibilities will become even greater
  • Eventually we see these being laminated to windows that line skyscrapers
  • By printing directly to materials like steel, we'll also be able to embed cells onto roofing materials
  • The organic photovoltaic cells, which produce 10–50 watts of power per square metre, could even be used to improve the efficiency of more traditional silicon solar panels

Dr Scott Watkins said:

  • The different types of cells capture light from different parts of the solar spectrum. So rather than being competing technologies, they are actually very complementary
  • The scientists predict that the future energy mix for the world, including Australia, will rely on many non-traditional energy sources
  • We need to be at the forefront of developing new technologies that match our solar endowment, stimulate our science and support local, high-tech manufacturing
  • While the consortium is focused on developing applications with current industrial partners there are opportunities to work with other companies through training programs or pilot-scale production trials

As part of the consortium, a complementary screen printing line is also being installed at nearby Monash University. Combined, they will make the Clayton Manufacturing and Materials Precinct one of the largest organic solar cell printing facilities in the world.

  • The consortium has developed processes that use spray coating, reverse gravure and slot-dye coating as well as screen printing
  • The consortium has developed processes that can be used with a range of solvents, most of which are in common industrial use
  • In particular, the consortium has developed in-house inks that do not require chlorinated solvents
  • Current module power output from printed devices is 10-50W per square metre. On smaller, lab-scale devices, power outputs equivalent to over 80W per square metre have been achieved
  • Lifetime testing of modules is ongoing, with current studies showing stable outdoor performance beyond six months
  • The consortium anticipates lifetimes of several years will be achievable in the near future
  • The consortium is currently only purchasing materials on a research scale. When bought on a larger scale it is anticipated that component costs will be significantly lower and that pricing around A$1/W will be achievable

Source: VICOSC consortium   

VDL and Solliance join forces to bring R2R expertise to organic photovoltaics manufacturing
20 May 2013

VDL and Solliance have announced their partnership for the development of a new, completely integrated roll-to-roll (R2R) manufacturing line for the research and pilot production of organic photovoltaic (OPV) modules. The development will take place within a consortium of several companies, among which Smit Ovens, supplying the drying furnaces for the R2R equipment and Bosch Rexroth, responsible for the drive components.

The partners will define and improve the specifications based on the experience gained during their cooperation. The pilot line will be built within the coming year. It will become operational at the new Solliance facility located at the High Tech Campus in Eindhoven. VDL will assume further business responsibilities in the commercialisation of the manufacturing line.

Japan Display Inc annnounces development of 5.2-inch full-HD OLED display
20 May 2013

Japan Display Inc. (JDI) has announced they have developed a high pixel density 5.2-inch (diagonal) organic light emitting diode (OLED) display prototype with full high-definition display resolution of 1,080 horizontal pixels X 1,920 vertical pixels (Full-HD).

According to JDI full-HD resolution is becoming the mainstream mobile display resolution in mobile devices, such as smartphones. JDI has been actively developing OLED display technology and accomplished the development of a full-HD high-resolution (423 ppi) display by successfully integrating high-resolution LTPS backplane, white OLED, and display driving technologies.

5.2 Inch full-HD OLED display

Figure: Japan Display - 5.2 Inch full-HD OLED display

Blackjack Lighting launches OLED table lamp - Aradess
20 May 2013

Lighting designer Stephen Blackman has recently shown a prototype of his new Aradess OLED table lamp featuring Lumiblade OLED GL350 panels by Philips at the recently held 2013 International Contemporary Furniture Fair (ICFF).

Stephen Blackman is launching his own manufacturing company - Blackjack Lighting. Aradess is one of Blackjack Lighting’s first releases, and will be distributed by Illuminating Experiences when it goes into production later this year. The Aradess is expected to have a retail price of US$ 5,900

Aradess OLED table lamp

Figure: Blackjack Lighting - Aradess OLED table lamp

Samsung Display adopts RGB evaporation for AM-OLED panels
20 May 2013

According to a report by Korea IT News Samsung Display has recently decided on its evaporation deposition technology, it is expected that further capital investment aimed at the OLED TV market is likely to materialise before the end of the year.

Until recently Samsung Display faced significant challenges improving its production yield of AM-OLED panels based on RGB evaporation technology. In contrast, LG Display adopted white OLED evaporation method which uses a single white OLED and a separate colour filer. Samsung Display has become confident its RGB evaporation technology yields are improving, and it it rumoured to have raised it to about 60%. As a result Samsung Display will adopt RGB OLED technology in its planned Gen-8 production line.

LG Display and Global OLED Technology sign OLED patent license agreement
13 May 2013

Global OLED Technology LLC (GOT) and LG Display (LGD) have signed a patent licensing agreement that gives LGD access to GOT’s patent portfolio, including intellectual property related to Active Matrix Organic Light Emitting Diode (AM-OLED) display technology.

GOT will collect royalties under the license agreement, but other terms of the agreement were not disclosed.

AM-OLED technology includes a light-emitting diode structure with an electroluminescent layer – organic, carbon-based compounds that emit light when an electric current passes through the OLED. A thin-film transistor (TFT) backplane switches each specific pixel on and off. Compared to LCDs, this configuration enables thinner and lighter form factors, deeper blacks, higher contrast ratio, and superior colour reproduction.

Source: Global OLED Technology

Daniel Carlineo, President and CEO of GOT, said "This agreement with LGD is an important development that reinforces the strength of our patent portfolio." Daniel added "In the past year, GOT has taken the right steps to become an influential player in the OLED industry. We’re confident this license with LGD will lead to additional licenses with display manufacturers."   

Samsung and LG rumoured to be closer to settling their battle over patents
13 May 2013

According to news reported by Yonhap News LG Display and Samsung Display are expected to settle their ongoing IP battle over OLED and LCD display technology as the two companies recently sat down together in a number of separate meetings to find a mutually acceptable solution. It is widely believed that the companies will eventually cross-license the patents being disputed.

It is known that the two companies are currently disputing seven technology patents on OLED owned by LG Display and seven patents on LCD technology owned by Samsung Display.


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