Nanometer Graphene can be used to make better and cheaper large-area OLEDs
Researchers at Stanford University have successfully developed a brand new concept of OLEDs with a few nanometer of graphene as transparent conductor. This paved the way for inexpensive mass production of OLEDs on large-area low-cost flexible plastic substrate, which could be rolled up like wallpaper and virtually applied to anywhere you want. The researchers say that Graphene has the potential to be transparent, high-performance, highly conductive and cheaper by several orders of magnitude than current ITO based solutions. Interestingly just a few weeks ago we reported that Graphene can be used to make organic lighting devices , too. Traditionally, indium tin oxide (ITO) is used in OLEDs, but indium is rare, expensive and difficult to recycle. Scientists have been actively searching for an alternative candidate. The next generation of optoelectronic devices requires transparent conductive electrodes to be lightweight, flexible, cheap, environmental attractive, and compatible with large-scale manufacturing methods. Graphene (a single layer of graphite) is becoming a very promising candidate due to its unique electrical and optical properties. Very recently, Junbo Wu et al., researchers at Stanford University, successfully demonstrated the application of graphene in OLEDs for the first time
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Nanometer Graphene can be used to make better and cheaper large-area OLEDs
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Transparent Light OLED Origami
August 10, 2010 - 11:11 am
Tags: info, oled, oled-tv, transparent oleds
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Universal Display has created a nice demo of their transparent OLED lighting panels – the Transparent Light Origami (TLO). It is made from 16 triangular glass PHOLED (Phosphorescent-OLEDs) panels that glow in either red, blue or green. When turned off, the panels are clear. Each panel is connected to the next via a friction hinge, so the structure can be folded and bent into a variety of shapes. The design of the TLO was inspired by the observation that colors emitted by overlapping transparent PHOLED panels combine in an additive way, as is the case with overlapping PHOLED materials in an OLED panel. Red and green produces yellow, red and blue produces magenta, etc. All three colors overlapping produce white light. As illustrated by the TLO, when overlapping layers of red, green and blue PHOLED materials are sandwiched within a single panel, white light is emitted.
AUO buys AFPD’s LTPS line, will use it to make AMOLED displays
July 23, 2010 - 6:27 am
Tags: auo, oled, oled-production, oled-tv, transparent oleds
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AU Optronics has completed its acquisition of Toshiba Mobile Display’s subsidiary, AFPD. This is part of AUO’s strategic move into AMOLED production. AFPD has a Gen-4.5 LTPS plant, which can be used to produce OLED backplanes. AUO 14-inch OLED prototype AUO wants to quickly start making AMOLEDs, because of the enormous demand for small sized displays. AUO is also working on its own manufacturing line, which will go online in 2011 . read more
Samsung plans to release plastic-based AMOLEDs by 2012
July 20, 2010 - 2:48 am
Tags: display, oled, technical-research
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Samsung plans to launch new AMOLEDs on a plastic substrate within two years. They say that these new AMOLEDs will be ‘unbreakable’. They will also be lighter, safer and thinner. These qualities can be useful in mobile phone displays, which will allow Samsung to keep their AMOLED price premium in these years. Samsung plans to place a TFT on the plastic panel and to replace the existing vinyl protection sheet with PI (polyimide) film to avoid residue upon light emission. Samsung revealed flexible, unbreakable AMOLED prototypes back in 2009, see video above.
GE and KM: efficiency breakthrough (56 lm/w) in roll-to-roll printable white OLEDs
July 16, 2010 - 5:57 am
Tags: konica-minolta, oled, technical-research
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GE and Konica Minolta announced that they have achieved a “major breakthrough” in their white OLEDs: an efficient 56Lm/w flexible white OLED that is made using solution-coatable materials in a roll-to-roll printing process. The materials have “commercially viable lifetime” (we do not know exactly what they mean by that). GE and Konica Minolta flexible desk lamp prototype GE and Konica Minolta plan to introduce their flexible OLED lighting products next year (2011), and have already displayed some early prototype lamps (one of which is shown above). They are working together since 2007 . KM hopes to see $1 billion in OLED Lighting sales by 2018 . KM has licensed OLED IP from UDC .
Novaled to remain in the IP & Material business, OLED displays
July 13, 2010 - 5:53 am
Tags: events, info, novaled, technical-research
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Last week we reported that Novaled is set to become an OLED Lighting manufacturer , moving away from the display business (the original post came from OLEDNet). Today Novaled tells us that in fact this is not true. Novaled’s core business remains their technology licensing and material sales (the materials are made by BASF). They are also acting very successfully in the display field and have very good relationships with Korean manufacturers. So this sets things straight…
Samsung to soon double their AMOLED’s efficiency, lifetime and power consumption
July 2, 2010 - 12:31 am
Tags: news, oled, power consumption, technical-research
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Samsung is aiming to improve their AMOLEDs in the near future. They claim they will double the efficiency (from 20cd/A to 40cd/A), the lifetime (from 50,000 to 100,000 hours) and the power consumption (from 62W to less than 30W). Samsung will use advanced color pattern methods to overcome the current FMM method large-size limitation. They will also move from glass encapsulation to thin-film, and apply Oxide substrate. They will also use only triplet OLED emitters instead of using both singlets and triplets. Samsung has recently began to construct their new 5.5-Gen AMOLED plant , which will start production in July 2011. Samsung plans to invest $2.2 billion on that plant that will have 3 production lines (1300X1500mm). Having a larger wafer size results in better efficiencies for both small and large panels (such as 30″ or 40″ OLED TV panels).
Russian physicists use Nanocrysal to make long-life OLEDs
June 26, 2010 - 7:18 am
Tags: oled, organic, technical-research
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Russian physicists has found a new way to make a long-living OLED. They are using nano-crystals of cadmium chalcogenides instead of the organic Chromophores in the OLEDs. Those Nanocrystals are long-lasting and when their size change, luminescence wavelength also changes, so it is easy to get required emission wavelength. They physicists say that the manufacturing process of the new devices is very similar to regular OLEDs, there’s only one change in the process, when colloid solution of semiconductor nano-crystals is mixed with organic semiconductor. read more
Microsoft uses a transparent OLED with a camera underneath for gesture control
June 24, 2010 - 8:14 am
Tags: samsung, technical-research, transparent oleds
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Transparent OLEDs are exciting (and Samsung wants to tap that market ) – but a lot of people wonder what is it really good for? Microsoft is showing a nice concept: using a camera beneath a transparent OLED to create gesture-based UI. The camera “sees-through” the OLED: Microsoft are using a Samsung-made transparent AMOLED panel.
E2M introduces new OLED lighting kits based on Philips & OSRAM panels
June 16, 2010 - 9:09 am
Tags: display, oled-tv, technical-research
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E2M Technology is introducing two OLED lighting kits based on OLED panels made by Philips and OSRAM. The first kit is called White Amethyst, and includes a 4cmx4cm Philips’ Lumiblade white square panel (like the one we reviewed a while back ). The kit includes one OLED panel, a driver and PC software (which can alter the lights luminosity level and program lighting sequences for up to four OLEDs via USB port). The kit also includes an on-board light sensor. It costs £459. Here’s a sample art-piece that E2M is showing, using the White Amethyst kit: The second kit is called White Sapphire, and this one is based around OSRAM’s ORBEOS panel ( here’s our review of the ORBEOS ). The ORBEOS is larger (a circle, 79mm diameter) than the Philips’ square panel. The kit is otherwise pretty much the same, with the same driver and software. It costs £609. read more
UDC awarded $99,000 to advance Phosphorescent OLED Lighting
June 16, 2010 - 2:01 am
Tags: financial, info, oled white lighting, oled-tv, technical-research
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Universal Display announced that they have been awarded a new Small Business Innovation Research (SBIR) Phase I $99,900 program from the U.S. Department of Energy (DOE). During this program, the Company will study the potential to enhance the performance of white PHOLED lighting devices in order to meet DOE requirements for general illumination applications. Under a program titled “Thermal Management of High-Efficacy White Phosphorescent Organic Light Emitting Devices,” Universal Display will design and build white PHOLED lighting panels to evaluate the impact of operating temperature on performance. read more