The invention relates to a photosensitive polysiloxane composition and a thin film formed by the aforementioned photosensitive polysiloxane composition. The particles passes through an electromagnet energized by a low inductance current feed incorporating a light activated switch to turn the energizing current on and off. The head end panel is coupled between the first side panel and the second side panel. The gate electrode of the second transistor and the capacitor electrode overlap at least partly with each other with the insulating layer interposed therebetween.