While I really do like memory LCDs... AFAICT they are and always have been totally unavailable at actually-high DPI (they hover around 200 and lower, which is noticeably below eink's 300, and far below modern phones at 400+) and large sizes (digikey has them up to a whopping 4 inches).
That's a complete deal-breaker for much beyond watches and small shopping labels. The biggest is just barely larger than my cheap thermostat's display. It's a great choice for watches (minus perhaps the low DPI), but not even slightly an option for ebook readers or even phones, much less larger signage or wall-art like https://hackaday.com/2021/04/11/a-fresh-e-ink-newspaper-deli...
I doubt that has much of anything to do with the technology, but you can only buy and experiment with things that exist.
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While I really do like memory LCDs... AFAICT they are and always have been totally unavailable at actually-high DPI (they hover around 200 and lower, which is noticeably below eink's 300, and far below modern phones at 400+) and large sizes (digikey has them up to a whopping 4 inches).
That's a complete deal-breaker for much beyond watches and small shopping labels. The biggest is just barely larger than my cheap thermostat's display. It's a great choice for watches (minus perhaps the low DPI), but not even slightly an option for ebook readers or even phones, much less larger signage or wall-art like https://hackaday.com/2021/04/11/a-fresh-e-ink-newspaper-deli...
I doubt that has much of anything to do with the technology, but you can only buy and experiment with things that exist.