Hi John,
To answer your question, no - there is no fix needed for ArcPad regarding map display.
If you are noticing a difference in display quality between your desktop and mobile device - please be aware of the hardware specifications of each platform. It may be that the screen on your mobile device is not able to perform as well as your PC monitor.
If you are talking about running ArcPad and ArcMap side-by-side on your desktop PC - could you please provide screenshots?
Hannah Ferrier