• Shubham Mittal

Smart watches are nowadays one of the most integral parts of our lifestyle but battery backup on a daily basis creates a lot of inconvenience due to excessive use of the watch. This project focuses on increasing the battery backup of smartwatch by integrating PV cells under the display of the watch. Also integrating voltage step up IC to match the charging voltage of the battery. FSTN (Film Compensated Super Twisted Nematic) is essentially a black and white display which can be operated in 3 ways, reflective, transflective and transmissive. In our project we will be using FSTN LCD in transmissive mode which is transparent when not in use. Using a transparent FSTN LCD for the display tends to pass light through it so that PV cells can work with at least 80-90% solar efficiency. Performed calculations for the power output of the PV cells, approximate power usage of the watch under everyday usage, power usage of the display, net power gain/loss per day along with approximate efficiencies of all the components and at last approximating the battery life of our smartwatch.

Solar Powered Smartwatch using FSTN LCD

"Solar Powered Smartwatch using FSTN LCD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 12, page no.g374-g394, December-2023, Available :http://www.jetir.org/papers/JETIR2312647.pdf

"Solar Powered Smartwatch using FSTN LCD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 12, page no. ppg374-g394, December-2023, Available at : http://www.jetir.org/papers/JETIR2312647.pdf