Ask HN: Good large format (>20 inches) touchscreen E-Paper display options?

A Hacker News user asked for recommendations on large touchscreen e-paper displays over 20 inches for a low-power calendar project. Respondents suggested considering existing e-ink monitors from manufacturers like Dasung (which could be repurposed) or exploring the Sony DPT-RP1, which some users have found to be jailbreakable.