Patent ID: 7285428

Claim:
A production method of an electron source comprising a plurality of upper layer wirings, a plurality of lower layer wirings crossing the upper layer wirings and being spaced from the upper layer wirings by insulating layers, and a plurality of electron-emitting devices connected to the upper layer wirings and the lower layer wirings, respectively, said production method of an electron source comprising: a forming step, of forming the lower layer wirings, the insulating layers, and the upper layer wirings on a substrate; and a removing step of, after said forming step, removing a partial region of the upper layer wiring including a region of short circuiting between the lower and upper layer wirings within a region in which the lower layer wiring crosses the upper layer wiring, wherein the partial region of the upper layer wiring that is to be removed extends beyond both edges of the lower layer wiring in a width direction of the lower layer wiring, but does not extend beyond at least one edge of the upper layer wiring in the width direction of the upper layer wiring.