The device consists of a hot cathode (filaments), anodes (phosphor) and grids encased in a glass envelope under a high vacuum condition. The cathode is made up of fine tungsten wires, coated by alkaline earth metal oxides, which emit electrons when heated by an electric current.
A tutorial with code that presents an easy way to show a splash screen in your Blackberry application. Show the first Splash-Screen, wait a few miliseconds, than load the rest of your application.