Provided is a display device including a light-diffusing member that includes a substrate, a plurality of light-shielding layers, and a light-diffusing section, and a polarizing plate. In the disclosed systems and methods, users are asked to produce advertising for specified products and to provide those advertisements to a central aggregator or facilitator. The nanocells may be size restricted such as being greater than about 60 nm so that they selectively extravasate at sites of angiogenesis and do not pass through normal vasculature or enter non-tumor bearing tissue. An incoming gas temperature of the exhaust purification unit is detected and estimated. The covering is manufactured by coating the bottom surface of a strip of material in beads of adhesive, smoothing the beads into bands, lines, strips or rows, and then cutting the strip into tiles using a non-mechanical cutter such as a laser.