Displays - Page 7

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.

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.

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.

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.

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

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).

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.

Graphene has great potential to improve various components used in mobile devices, from transparent flexible screens to next-gen batteries, through durable phone casings, sensors, and powerful processors. Don't miss our new article on graphene for the mobile industry!

The MWC 2016 the world's largest event for the mobile industry held in Barcelona, Spain, will feature an entire pavilion dedicated to graphene in regards to the mobile world, an exciting precedent that emphasizes the growing attention that graphene is receiving in the technological world. The Graphene-Info team will attend the MWC 2016. If you wish to schedule a meeting with us, contact us here.

A collaborative team of scientists from the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, Stony Brook University (SBU), and the Colleges of Nanoscale Science and Engineering at SUNY Polytechnic Institute have developed a simple method for creating resilient, customized, and high-performing graphene: layering it on top of common glass. The scalable and inexpensive process may help pave the way for a new class of microelectronic and optoelectronic devices-from efficient solar cells to touch screens.

The team designed the proof-of-concept graphene devices on substrates made of soda-lime glass-the most common glass found in windows, bottles, and many other products. Unexpectedly, the sodium atoms in the glass had a powerful effect on the electronic properties of the graphene - it created high electron density in the graphene, which is essential to many processes and has been challenging to achieve. Also, the effect remained strong even when the devices were exposed to air for several weeks- a clear improvement over competing techniques.

Researchers at the University of California at Berkeley and the Lawrence Berkeley National Laboratory have developed a new solution-based, cost-effective way to wrap reduced graphene oxide around the surface of ultrathin transparent conducting copper nanowires. The technique aims to significantly improve the stability of the wires in air and reduce the amount of light scattered by the materials.

Thin films made of the wires might be used in optoelectronics devices, particularly in displays and flexible electronics. Metal nanowire films could make good replacements for the expensive and brittle indium tin oxide (ITO) in next-generation electronics, thanks to their excellent electrical and optical properties and the fact that they can be easily processed in solution.

The OLED Association, a trade group that promotes OLED technologies, published an interesting article in which they give predictions for the OLED market. The Association sees Samsung returning to the OLED TV market in 2017, and those upcoming OLED TVs will use several new technologies - including graphene-based transparent electrodes.

Last month we reported that researchers at Korea's ETRI developed transparent graphene-based electrodes for OLED panels. The researchers say that these new electrodes improve the transparency and "image quality" of OLEDs by 40 to 60 percent, compared to current silver-based electrodes. The researchers aim to continue the research and improve the performance of their electrodes.

Researchers at Korea's ETRI (Electronics and Telecommunications Research Institute) developed transparent graphene-based electrodes for OLED panels. The researchers say that these new electrodes improve the transparency and "image quality" of OLEDs by 40 to 60 percent, compared to current silver-based electrodes.

The researchers explain that current metal (mostly silver) based electrodes have a limited viewing angle because of their internal light reflection, and the external light reflection affects the image quality. Graphene electrodes are more transparent and reduce the reflectance by 40-60 percent.