Dave’s long term LCD DC bias experiment has turned a regular 7 segment LCD effectively into an E-Ink/E-Paper display!
Microchip LCD App Note: http://ww1.microchip.com/downloads/en/AppNotes/AN658-LCD-Fundamentals-and-the-LCD-Driver-Module-of-8-Bit-PIC-MCUs-00000658C.pdf
Datasheet: https://www.lumex.com/spec/LCD-S101D14TR.pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1297-turn-an-lcd-into-e-paper!/
Podcast: Download