Patent ID: 7543950

Claim:
A method of forming a reflector member comprising a step of forming an underlayer and a step of forming said reflector member on said underlayer, wherein said step of forming said underlayer comprises the steps of: forming a first film; forming a plurality of polygonal shaped holes having a plurality of edges in said first film; and forming a second film on said first film in which said plurality holes have been formed, wherein said step of forming the plurality of holes is a step of forming said plurality of holes in said first film in such a way that a plurality of partitions are formed in said first film, each of said plurality of partitions having a substantially constant width and separating adjacent holes of said plurality of holes; wherein said widths of at least several of said plurality of partitions are substantially equal to each other; wherein, in said step of forming a plurality of holes, said plurality of holes are formed in said first film in such a way that a plurality of hole sets are formed in said first film; wherein each of said hole sets comprises only one first hole and only seven second holes of said plurality of holes; wherein said only seven second holes are arranged around said only one first hole; and wherein each edge of said first hole facing a corresponding edge of one of said second holes defines one of said plurality of partitions.