A method of forming an organosilicate layer is disclosed. A rectangular fabric bag has an opening at one of the smaller ends of the rectangle for receiving the portable computer. The leakage currents in these two transistors are compared, and it is considered that the optimal bias of the gate is obtained when the leakage currents are equal. A first end of each metal connecting post extends into the plug, and a second end of each metal connecting post is electrically connected to the conductive part. The invention provides an advantageous construction and display quality, as the periphery of the active zone is encompassed by adhesive strips, which appear black, between the substrates, and the masking, at least in bright areas that would otherwise be visible from a conventional viewing distance during retrace blanking, is produced by means of additional adhesive strips.