The present report deals with the detail description of the project "RF Energy harvesting based battery less E-Paper" that have been carried out during the internship at STMicroelectronics. An electrophoretic display is a type of low-power thin display that can retain its information for a very long period without power once it has been updated. E-Paper from company Pervasive Displays has been used throughout my project. This E-paper supports the SPI protocol in bidirectional mode which is used to interface it with STâ€™s microcontroller. A specific procedure according to the datasheet is followed to update the display. Three stages are required after which new image evoke on the display which can persist for long till next update.