An electron emission device based flat panel display apparatus is composed of a pair of a back substrate and an optically transparent front substrate opposing to each other with a vacuum space interposed therebetween, and a plurality of electron emission devices, each of which includes an electron-supply...http://www.google.es/patents/US6259198?utm_source=gb-gplus-sharePatente US6259198 - Flat panel display apparatus with an array of electron emitting devices
Flat panel display apparatus with an array of electron emitting devices