The first graphene-based soft display prototype is available

Cambridge Graphene Cambridge Research Centre (CGC) and PlasticLogic, the University of Cambridge, UK, claim to use graphene for the first time on transistor-based flexible components, opening many new devices for fully wearable and flexible devices. opportunity.

This partnership combines CGC's expertise in graphene with the transistor and display processing process developed by PlasticLogic for soft electronics. The first prototype is the first example of how the two parties can accelerate the development of commercial graphene, and is the first step towards more extensive construction of graphene and graphene-like materials in soft electronics.

The prototype is an active matrix electrophoretic display similar to the one used in today's e-book readers, except that it uses soft plastic instead of glass. Compared to the general display, this soft display prototype's pixel electronics or backplane contains a solution-processed graphene electrode to replace the sputtered metal electrode layer built into the traditional PlasticLogics display, bringing products and processes Many advantages.

Graphene is more flexible than traditional ceramic substitutes (such as tin oxide ITO) and is more transparent than metal films. This ultra-soft layer of graphene can be used to implement a wide range of products, even including foldable electronic components. Graphene can also be obtained by solution processing, resulting in an inherent advantage of more efficient use of printing and roll-to-roll (R2R) processes.

The 150-pixel per-inch backplane is fabricated using PlasticLogics' Organic Thin Film Transistor (OTFT) technology at temperatures as low as 100 °C. The graphene electrode was obtained by solution deposition and then patterned in micron-scale properties to complete the backsheet.

For the first prototype display, the backplane incorporates an electrophoretic imaging film set to create an ultra-low-power, rugged display. Prototypes developed in the future can be further combined with LCD and OLED technology to achieve full color and video functions. The lightweight, soft active matrix backplane can also be used in sensors, as well as in applications such as new digital medical imaging and gesture recognition.

CGC professor Andrea Ferrari said that we are pleased to see the first graphene-electrophoretic display using graphene in the form of pixel electronics with PlasticLogic. This is a big step towards achieving fully wearable and soft devices. This also consolidates the strength of the University of Cambridge's graphene technology cluster and demonstrates the importance of effective industry-university collaboration to assist graphene from laboratory to plant applications. ”

The development potential of graphene is well known, but today's industrial process engineering requires graphene to go out of the lab and implement industrial applications, said PlasticLogic CEO Indro Mukerjee. "This demonstration allows PlasticLogic to stand on the front end of development, and it is expected that it will soon be Achieve a new generation of ultra-soft and foldable electronics."

PlasticLogic and CGC's development plans have recently been sponsored by the UK's Technology Strategy Committee to further accelerate the implementation of this graphene revolutionary program. The goal is currently to achieve advanced, full-color and OELD-based displays in the coming year.

The program is also sponsored by the Engineering and Physical Sciences Research Council (EPSRC) and the European Union Graphene Flagship Alliance (GrapheneFlagship).

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