A method for manufacturing a semiconductor device and a device manufactured using the same are provided. The floral holding material is constructed of a material capable of receiving a portion of a floral grouping and supporting the floral grouping. In some embodiments, Event portions of the cardiac signal are identified corresponding to brain event time periods, and Inter-event portions are identified corresponding to time periods between brain events. A light extraction opening is formed on the surface of the pixel with a light-shielding film. When the content is played by the content playback device, a device identifier may be generated for the content.