. . . "In a process not shown here, the electrode and metal layers 32 and 34 are patterned and etched to form electrode columns, rows or other useful shapes as required by the display design. [0033] Formed on top of the metal layer 32 and filling in the gaps between the patterned electrode elements are an oxide layer 36, a first sacrificial layer 46 and the mirror metal layer 38 in FIG. 6b." .