Check out Micrel's MIC2660BM5.  It's a charge pump in a SOT23-5 (5pin).
Connect the normally positive output to ground and the ground output will
be negative.  Load the output to get the voltage you need or use a
divider.

Good luck,

Todd.


Paul B. Webster VK2BZC wrote:

> Wesley Moore (Yallara) wrote:
>
> > I think I will give the diode idea a bash first as it's the easiest
> > and I'm pretty sure this will be enough as the display isn't too far
> > off as it is, just needs a little more oomph.
>
>   Use silicon signal diodes, *not* power diodes which don't work at
> frequencies much above 1 KHz.
> --
>   Cheers,
>         Paul B.