Fig. 6
Soft flexible printed circuit board that integrates the CurvIS array with UNE. a Schematic drawing of the electronics for detecting the external light (bottom) and for applying the stimulation (top). b Optical camera image of the CurvIS array and the UNE on the eye model, which are connected by the soft FPCB. c Magnified optical camera image of the vertically stacked the CurvIS array and the UNE. d Schematic illustration of the phototransistor (bottom) and the stimulation electrode (top) stacked together and connected via the soft FPCB. e Optical camera image of the soft FPCB. f, g Optical camera image of the soft FPCB under poking f and bending g. h, i Generated electrical pulses at three different pixels by responding the light on/off h, and magnified electrical pulse i
