Patent ID: 7825436
Filing Date: 2010-11-02
Classification: B82Y,H01J,H01L

Abstract:
1. A thin film electron source comprising: a substrate; a lower electrode formed on a main surface of said substrate; an insulation layer formed in contact with said lower electrode; and an upper electrode formed in contact with said insulation layer, which upper electrode comprises a surface for emitting electrodes in a vacuum, wherein, in order to prevent disconnection of the upper electrode from said insulation layer that it is in contact with, said upper electrode comprises a first under-layer formed on the insulation layer, a second under-layer formed on the first under-layer, an intermediate layer formed on the second under-layer and a surface layer formed on the intermediate layer, a main material of said lower electrode being Ti, a main material of said insulation layer being TiO 2 , a main material of said first under-layer being IrO 2 or RuO 2 , a main material of said second under-layer being Ir or Ru, a main material of said intermediate layer being a member selected from the group consisting of Ptlr, PtRu and PtRh, and a main material of said surface layer being a member selected from a group consisting of Au and Ag.