Patent ID: 7919911
Filing Date: 2011-04-05
Classification: B82Y,H01J

Abstract:
1. An image display apparatus provided with a substrate having a plurality of electron emission elements, and a faceplate having a phosphor, wherein said electron emission element has a base electrode, a top electrode and a first insulating layer interleaved between said base electrode and said top electrode, and is a thin-film electron emitter which emits electrons from said top electrode side by applying voltage between said base electrode and said top electrode, characterized in that: said first insulating layer defining an electron emission area, a second insulating layer thicker than said first insulating layer and composed of an oxidized film formed by oxidizing said base electrode, and a transition region where film thickness changes continuously between said first insulating layer and said second insulating layer, are formed on said base electrode; said base electrode comprises a stacked structure of a base electrode first layer and a base electrode second layer; said base electrode first layer comprises an aluminum alloy having an additive element; said base electrode second layer is an aluminum alloy a content ratio of said additive element to a main constituent element is smaller in said first insulating layer than that in said base electrode first layer; and a stack interface between said base electrode first layer and said base electrode second layer is not included in said second insulating layer.