Fabricating method of electron-emitting device

A fabricating method of an electron-emitting device, comprising:

• providing a substrate having a first side and a second side which is opposite to the first side;
• forming a first electrode pattern layer on the first side of the substrate;
• forming a conductive pattern layer on the substrate and the first electrode pattern layer, the conductive pattern layer partially covering the first electrode pattern layer;
• forming an electron-emitting region in the conductive pattern layer after the conductive pattern layer being formed, wherein there is a segmented step on an edge of the conductive pattern layer covering the first electrode pattern layer, and the electron-emitting region is disposed at the segmented step in the conductive pattern layer;
• and
• forming a second electrode pattern layer on the second side of the substrate after the electron-emitting region being formed, the second electrode pattern layer partially covering the conductive pattern layer.