A device having a hand-held form factor (e.g., smartphone, tablet computer) has a transparent display that allows viewing of real world content through the display, while rendering virtual content to the display. The display may take the form of a touch-sensitive display, allowing user input directly through physical interaction with the display. The display may include a pair of major outer-most faces and a pair of inner faces, one of the inner faces angled to reflect light from a projector, outward via one of the major outer-most faces. The gap may advantageously be formed via a pocket extending inwardly from an edge of an optical substrate that comprise the touch-sensitive display.