Is Waveforms what is in Epsons eink controller chips? https://phys.org/news/2011-05-dpi-epson-e-ink-epaper-resolution.html https://phys.org/news/2011-05-dpi-ep

Is Waveforms what is in Epsons eink controller chips? https://phys.org/news/2011-05-dpi-epson-e-ink-epaper-resolution.html https://phys.org/news/2011-05-dpi-epson-e-ink-epaper-resolut... Japan display has made 600 dpi controllers. http://www.j-display.com/english/news/2017/20170522.html http://www.j-display.com/english/news/2017/20170522.html Further been thinking of building an Eink based smartphone, the eink display would have low power. Some kind of low power small system board running Linux and a 4g modem. Not sure what system board to pick. Batteries should be LifePo4 Lithium iron for battery safety. What kind of high resolution touch based eink displays are out there which are easy to drive from a small Linux system board?