Abstract: A writing or projection surface, such as may be used for white boards, comprising multiple layers of thin films.

Abstract: A writing surface, such as they be used for white board, is produced by vapor deposition of a thin ceramic film on a substrate.

Abstract: A frame assembly comprises a rigid inner frame having a first perimeter; a plurality of independent outer frame members positioned outwardly of the inner frame to define a second perimeter larger than the first perimeter, the second perimeter defining a plane having a front face and a rear face; and a flexible sheet extending across the front face, around the outer frame members and secured in a fixed position on the rear face to define a plurality of longitudinally extending passageways adjacent the second perimeter, the outer frame members positioned in the passageways.