| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To realize a higher output of a dielectric film type electron emission element. <P>SOLUTION: An upper electrode 114 is formed on a top-side surface 113a of an emitter layer 113 made of a dielectric. The upper electrode 114 is structured of graphite particles 115 and silver fine particles 116. The graphite particles 115 have fine grooves 115a as microscopic grooves and micro protrusions 115b as microscopic protrusions. The silver fine particles 116 are adhered to the surface of the graphite fine particles 115. The silver fine particles 116 consist of small-diameter fine particles 116a and large-diameter fine particles 116b. The upper electrode 114 is formed by applying electrode paste made by dispersing the graphite particles and the silver particles in a synthetic resin binder on the emitter layer 113, and putting them under heat treatment. As the binder, a material with a decomposition temperature lower than a temperature at which part of the graphite particles is oxidized by the silver fine particles is used. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
