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Korean researchers demonstrate the world's first transparent OLED with graphene electrodes

Jun 24, 2016

Researchers from Korea's ETRI Institute developed the world's first transparent OLED prototype that uses a graphene transparent electrode. ETRI demonstrated the new display at the SID 2016 tradeshow.

ETRI transparent OLED display with graphene electrodes (SID 2016, photo)

The prototype display was 26x26 mm in size, with a resolution of 155x60 (121 PPI). The display was a monochrome (orange) display. In the display on show, the graphene-based electrodes were deposited on the backplane of the display.

Researchers create a foldable display on paper using a graphene-based ink

Jun 08, 2016

Researchers from Bilkent University in Turkey developed a new display prototype that is based on a graphene ink deposited on a regular paper. The paper display has high optical contrast and a fast response time. Such a paper-like display can be very flexible and foldable.

Graphene display on paper (Bilkent, 2016)

To create this display, the researchers used electro-modulation of the optical properties of the multilayer graphene via blocking the interband electronic transitions.

Korea-based researchers develop rollable OLED using graphene electrodes

Jun 03, 2016

Researchers from Korea's KAIST institute developed a rollable OLED device that uses graphene-based electrodes. The researchers say that the new OLED is much more durable when bent compared to current devices made with ITO electrodes.

KAIST graphene-based OLED device photo

The electrodes were made from a stack of materials - titanium oxdies, graphene and conductive polymers. The new OLEDs were also brighter than current devices, and with a higher color gamut. This was achieved by maximizing the resonance within the OLED.

Chinese graphene market tripled in 2015

May 02, 2016

Innova Research recently published a survey that states that the Chinese graphene market revenue for 2015 was estimated at $6.1 million, a 335.7% jump from $1.4 million for 2014.

Chinese market revenue growth in 2015 image

The survey also specifies that significant progress has been made on the adoption of graphene in a number of industrial applications in 2015, namely touch screens, anti-corrosive coating, and lithium-ion batteries (LIBs). These adoptions are the primary reasons for the soaring Chinese graphene market revenue in 2015.

Guangzou OED develops a graphene-based e-paper technology, to start making displays within a year

May 01, 2016

China-based e-paper developer Guangzou OED Technologies announced that it has developed a new graphene e-paper technology. The company aims to start producing these new screens within a year.

The company says that the new graphene-based paper is brighter and more flexible. The graphene paper is also said to have "more intensity", although it's unclear exactly what this means. It's also not clear what the role of the graphene in this new screen is, but it's likely used as a conductor material in the display's touch panel. It is also possible that the display itself uses graphene electrodes, but this technology is far less mature.

Fuji Pigment announces graphene and carbon QD manufacturing process

Apr 29, 2016

Fuji Pigment recently announced the development of a large-scale manufacturing process for carbon and graphene quantum dots (QDs). QDs are usually made of semiconductor materials that are expensive and toxic, especially Cd, Se, and Pb. Fuji Pigment stated that its toxic-metal-free QDs exhibit a high light-emitting quantum efficiency and stability comparable to the toxic metal-based quantum dots.

Fuji Pigment's graphene QDs process image

Quantum yield of the carbon QDs currently exceeds 45%, and the company said it is still pursuing higher quantum efficiency. Quantum yield of the graphene quantum dot is over 80%. QD’s ability to precisely convert and tune a spectrum of light makes them ideal for TV displays, smartphones, tablet displays, LEDs, medical experimental imaging, bioimaging, solar cells, security tags, quantum dot lasers, photonic crystal materials, transistors, thermoelectric materials, various type of sensors and quantum dot computers.

Smartphone with bendable graphene-based touch screen unveiled at Chinese tech fair

Apr 29, 2016

A Chinese company (possibly called Interim, though details are sketchy) presented a fully bendable smartphone with a graphene-based screen during a trade show at Nanping International Conventional Center in Chongqing. The bendable touch display weighs 200g, and the smartphone can be worn around the wrist. The display is rumoured to be an OLED display with a diagonal of 5.2 inches.

There are no substantial details about the company behind the graphene smartphone and what the plans are to bring the graphene phone to market. It's not clear what the meaning of a "graphene-based" display is, in this case. While graphene can theoretically be used to make light emitting devices, it's highly unlikely that this is the case here. My guess would be that this is a flexible OLED display (could also be a flexible LCD, but that's unlikely) with a graphene-based touch panel.

A new Graphene-Info market report, Graphene for the Display and Lighting industries

Apr 12, 2016

We're happy to announce a new market report, Graphene for the Display and Lighting industries. This report, brought to you by the world's leading Graphene and OLED experts, is a comprehensive guide to the applications of graphene in these two important markets. Graphene is an exciting material that promises to revolutionize entire industries - and it has a bright future in the display and lighting industries.

graphene for lighting and displays - report cover

Reading this report, you'll learn all about:

  • Graphene applications in LED and OLED lighting
  • Graphene's adoption as a backplane for AMOLEDs
  • Transparent graphene electrodes
  • Graphene-based encapsulation development

Other topics include:

  • Graphene companies involved with display and lighting
  • An introduction to graphene
  • An introduction to lighting and displays
  • Details about graphene for QDs, lasers and thermal foils

Graphene impressions from the Mobile World Summit

Feb 29, 2016

Last week Barcelona hosted the Mobile World Congress trade show, and it was a very large and impressive conference - with over 100,000 visitors and thousands of exhibiting companies. This year the MWC included a graphene pavilion, organized by the ICFO and the Graphene Flagship, Europe's $1 billion research project initiative.

The Graphene Pavilion was very impressive, with several companies showcasing real graphene products and prototype devices, and also several research groups from leading Universities. The Pavilion consisted of 11 companies and 9 research centers - and you could see graphene materials, graphene supercapacitors (From Zap&Go, soon to hit the market), large graphene EMI shielding films (from GNext), graphene sensors and graphene-based RFID tags and antennas. In the photo below you can see an air quality prototype sensor made from graphene developed by Libre SRL (PiAndBi).

BCC Research sees a bright future for graphene

Feb 17, 2016

A recent BCC Research report predicts that between 2015 and 2025, the graphene market will achieve unprecedented growth rates through technological advancements, spotting increasing patent activity that suggests that technology trends are under way, ripening the market for explosive future growth.

BCC Research expects a commercially significant market for graphene products to develop between 2015 and 2020, when the market is projected to be worth more than $310.4 million. The graphene market will supposedly continue to grow rapidly after 2020, approaching $2 billion by 2025.