No, Vcc is the correct way to get 5v out. You can't get all that much current out, since it has to dissipate the energy as heat and it's a rice-grain sized part (if you need more current, use an external voltage regulator - either linear (like a 1117-series) or a dc-dc step-down converter for higher current and greater efficiency, at a cost of higher standby power consumption and greater complexity (search ebay for dc-dc step down in industrial and test equipment - you'll get results starting at about $1 counting shipping)
Please post a schematic showing all of the connections. A picture of a neat hand drawn schematic is fine. We need to see exactly how everything was wired. Also, what kind of screen? Post link to the product page you got it from.