An optical projection display member includes an optical focusing structure, an optical panel, and a light-absorbing layer. Further disclosed are container precursors and containers incorporating such a piston, and methods of filling and dispensing from such containers. for a period of time sufficient to deposit a silicon based film on the substrate. Piezoelectric substrates are attached to a transparent protective plate protecting the top surface of the display panel. The antenna is hence capable of adjusting the impedance, and as a result, the number of structural parameters of the antenna increases, and the adjustable range of the impedance of the antenna is expanded. In alternative embodiments, the toxins may for example include beta-sitostrol-beta-D-glucoside or cholesterol glucoside.