A non volatile semiconductor memory device wherein it is possible to transfer Vpp without a drop in voltage of the transfer transistor Vth in a transfer circuit or decoder circuit for selectively transferring Vpp by using a usual LVP to reduce step of production process and costs. In one embodiment, the cable connector includes male and female portions having corresponding male and female contact pins for the power and audio lines, and forwardly-biased ferrules housing the optical fibers. At least one of the organic light emitting diodes of each group includes a second layer sequence forming a second microcavity is adapted in thickness of at least one of its layers to increase light output of the corresponding organic light emitting diode. The arc-shaped inner surface has a circumferential length approximately equal or greater than that of the arc-shaped outer surface.