The present invention is directed to a preventive or therapeutic agent for a glomerular disease comprising as an active ingredient a compound represented by formula : 1or a salt thereof. The insulative housing made of insulative material has a base, a plurality of periphery walls, ,, extending upwardly from the base. Underlying one of the organic interlaminar insulating films directly contacts a channel part of a TFT. The cylindrical wall rail extends outside of the helical rail for the length thereof. Alternatively, an opening is formed in the protective layer over the saw street.