Fluorescent display device and control electrode therefor

摘要

A fluorescent display device capable of eliminating occurrence of EMI. The fluorescent display device includes a mesh-like control electrode. The control electrode has a mesh pattern made of a wire of 30 to 50 mum in diameter into a hexagonal shape so that six sides thereof each are 0.4 mm in length. Also, the mesh pattern is formed so as to have an opening ratio of 74.9%. Such construction effectively eliminates such generation of EMI at a band of 350 to 420 MHz as seen in a conventional fluorescent display device.