Interesting.
This suggests me to thing that it could allow for affordable large size sensors as well. If with the conventional circuitry is meant PCB. Even if it's not, you can make full sized wires and electronics with no silicone thinning and other trade-offs, that require high precision/quality wafer. Just leave contact pads and apply the film.
If the sensor uses nano sized crystals, probably it's spectral response is determined by the size, shape and material of those crystals. In CMOS/CCD it was mostly dependent on diode material (silicone) and thickness.
This means you can make a film with different size crystal pattern, where each crystal matches specific wavelength.
Nomad, can you give us a reference to the quote?..naaah, i googled:
Quantum dots promise more sensitive sensors: Digital Photography Review
"2x higher dynamic range" I wonder to what scale does this refers, logarithmic (dB) or linear (min:max value).