Flexible circuits are thin, lightweight electrical circuits that can bend and twist without breaking. They are made from flexible materials, such as polyimide or polyester, which allow them to conform to various shapes. This flexibility makes them ideal for use in compact electronic devices like smartphones, wearables, and medical equipment. These circuits can integrate multiple components, such as resistors and capacitors, onto a single flexible substrate. This design not only saves space but also enhances the performance of devices by reducing the number of connections needed. Flexible circuits are increasingly popular in industries like consumer electronics, automotive, and healthcare.