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Phone display may soon stretch to become tablet, wrap around wrist like a watch



When mobile phones first came into existence they were big and unattractive. Several researchers then worked on making them compact and desirable. People slowly warmed to the technology and embraced it as it allowed them to communicate on the move. Many advancements have been made since then to meet the varied demands of the users. A group of researchers has now developed a way to make a cell phone multipurpose – you can fold it up and put it in your pocket or wallet, pull off the screen to make it a tablet, or make it look like a watch. Can wrap around your wrist.

This next step in the development of digital displays is made possible by researchers at the McKelvey School of Engineering at the University of Washington. Preston M. Led by Chuan Wang, an assistant professor in the Green Department of Electrical and Systems Engineering, researchers have developed a new material that uses both technologies – LED and OLED – and a new way to fabricate it using an inkjet. Printer. Their research is published in the journal Advanced Materials.

The researchers used an inkjet fabrication method instead of the traditional spin art method to create a special type of crystalline material called organometallic halide (OM) perovskite. This makes the organic-inorganic compound display flexible. From there, Perovskite Light Emitting Diodes (PeLEDs) can be recovered.

“Because it comes in a liquid form, we imagined we could use an inkjet printer,” Wang was quoted in a release published on Eureka Alert. In addition, inkjet fabrication saves material because it only deposits perovskite where it is needed. The process is very quick, cutting down time from 5 hours to 25 minutes,” Wang said.

“Imagine having a device that starts out the size of a cellphone but can be scaled up to the size of a tablet”.

This could be the first step in the PELED electronics revolution. They could light up the walls or even show the day’s newspaper. They could be used to make wearable devices, such as a pulse oximeter to measure blood oxygenation. Most excitingly, they could allow manufacturers to print stretchable devices.


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