A field emission display having a base plate which has a focus ring structure substantially planar with the extraction grid. The field emission display base plate is fabricated on a substrate having a cathode including an emitter tip formed thereon by depositing a first insulating layer, a first conductive...http://www.google.com.tw/patents/US6428378?utm_source=gb-gplus-share專利 US6428378 - Composite self-aligned extraction grid and in-plane focusing ring, and method of manufacture
