Yes, I was wondering if something could be done using 3d printed fluidic logic. If so then the entire thing could have no solid moving parts, and just be one big 3d print, except: (maybe) a single big rubber membrane in which dots are raised by fluid pressure. Plus of course the fluid pressure source; and the valves to interface the device to electronics, to input the display data. Otherwise it could be a big shift register in fluidic logic with an amplifier at each bit to output to each dot.
The difficulty with fluidic logic is that the devices from the original flowering of the field don't work at the low Reynolds numbers found in smaller devices. Maybe something from the new micro fluidic field would work, but I don't know if they can control sufficient pressure to be felt, or to raise a rubber membrane.
The difficulty with fluidic logic is that the devices from the original flowering of the field don't work at the low Reynolds numbers found in smaller devices. Maybe something from the new micro fluidic field would work, but I don't know if they can control sufficient pressure to be felt, or to raise a rubber membrane.