An ability to control the basic materials structure and lattice configuration is essential for successful engineering applications of graphene and related two dimensional materials. In this talk, various fabrication techniques and nanoscale patterning processes for controlling the grapheme film geometry such as graphene nano bridge width, pore array dimensions, and alterations of graphene lattice will be discussed. One of the potential applications of graphene films is for transparent conductor layer for displays. However increasing optical transmittance of graphene without sacrificing the electrical conductivity has been difficult. We have demonstrated a successful fabrication of optically highly transparent (~98%) graphene film having a reasonable electrical conductivity by nano-patterning and doping, utilizing the availability of large number of edges in the nano-graphene as ideal sites for chemical dopant attachment, leading to a significant reduction of the sheet resistance RS. The implications of such geometry control on various physical, electronic, optical, and mechanical properties and relevant applications will be discussed.