An aircraft hull attachment device may be configured for attachment to a fuselage of an aircraft. The methods involve the use of micro andor nano-sized particles that are mixed into an alloy using a friction stir welding method. With this arrangement, it is possible to provide a laminated phase plate performing an improved function for realizing a reflective type liquid crystal display device with an excellent visibility or a projection . Accordingly, the present invention provides advantages of saving power consumption and improving user convenience. A layer of rugged silicon is formed over a substrate, and a nitrogen-comprising layer is formed on the layer of rugged silicon. After performing a pad redistribution step on the first die, an insulator is formed on a peripheral region over the first die.