Flexible electronics refers to a class of lightweight, flexible and electronic sensing components and electronic devices built on stretchable substrates that are used for a broad set of products and applications such as displays and sensors. The most prominent characteristic is that they can bend in comparison to the electronic systems built in rigid materials. Printed electronics is often considered to be part of flexible electronics. It refers to the printing method used to create electronic devices by printing them on diverse substrates. The technology used has evolved over time, and now it is possible to print electrical circuits quickly and inexpensively thanks to inkjet printers.