A slip sheet provides a vapor barrier at a location where two siding boards abut after being secured to a wall. The film chip has two sides sensitive to radiation exposure, and the packet protecting the film chip incorporates the radiation shielding fiber powder element on one side of the film chip to provide backscatter radiation equal to the lead foil embodiment when the film packet is exposed to radiation. A projection extends from each arm. The pixel electrode is surrounded, or fenced off, by the common electrode in each pixel so that the former is kept unaffected from interference from a nearby gate line andor source line.