Embodiments of this invention relate to systems and methods for providing anatomical flap centration for an ophthalmic laser treatment system. Each of the plurality of pixels includes a transistor and a pixel electrode arranged above the transistor through a first protective film and a second protective film. The keyboard is mounted on the elastic pieces. Before the composite material is fully cured, a bladder is formed into or is inserted into an end of the blade root and inflated, thereby forcing the composite material into intimate contact with the interior cavity of the metallic member, thereby ensuring a fret-free interface upon final curing of the composite material.