Electron source manufacturing method

A manufacturing method of a plurality of electron-emitting devices having a plurality of conductive members on a substrate,

• said method comprising:
• a forming step of forming a plurality of conductive members, said forming step comprising:
• a film forming step of forming a conductive film on a substrate;
• a step of applying a negative photosensitive resin on the conductive film;
• a first exposing step of exposing the negative photosensitive resin by using a first mask which has plural aperture portions, respectively extending in a first direction, at pitches that are the same as those of first lines extending parallel to the first direction;
• a second exposing step of exposing the negative photosensitive resin by using a second mask which has aperture portions, each extending in a second direction in a width that is the same as a maximum length of the conductive member taken along the first direction, at pitches that are the same as those of the conductive members in the first direction, the second direction being perpendicular to the first direction;
• a step of forming a first resist by developing the negative photosensitive resin double-exposed;
• a step of forming a first conductive film pattern by etching the conductive film with use of the first resist as a mask;
• a step of applying a negative photosensitive resin on the substrate after the etching;
• a step of forming a second resist by exposing and developing the negative photosensitive resin in a state that the second mask is being shifted toward the first direction;
• and
• a step of forming a second conductive film pattern by etching the first conductive film pattern with use of the second resist as a mask.