A mask or reticle includes a focus test area having a pattern of opaque lines, naked lines, and phase shifting lines. The dummy color filter layer is adjacent to at least one of the red color filter layer, the green color filter layer, and the blue color filter layer, and the dummy color filter layer forms a step with the adjacent color filter layer. A session state information managing system is provided to allow different application servers to process requests belonging to a single session without requiring the requests to carry their entire session state information. An end each of the three central conductors makes up three inputoutput terminals, respectively, and the other end thereof is connected to a common portion. An organic layer is formed on the portion of the lower electrode exposed by the opening, and an upper electrode is formed on an entire surface of the insulating substrate and electrically connected to the auxiliary electrode.