Patent ID: 7942713

Claim:
A method of fabricating an electron-emitting device, comprising: flowing a current through a film to form a gap in a portion of said film, the film containing (a) a plurality of first particles made of a first material and (b) a plurality of second particles having a resistance lower than a resistance of the first particle and made of a second material different from said first material, wherein said film satisfies any one of the following conditions: (i) a contained amount of said first particles is not less than 2% and not more than 30% of a total contained amount of the first particles and the second particles, and a ratio of the resistance of said first particle to the resistance of said second particle is not less than 5 and not more than 1000; (ii) a contained amount of said first particles is not less than 2% and not more than 40% of a total contained amount of the first particles and the second particles, and a ratio of the resistance of said first particle to the resistance of said second particle is not less than 5 and not more than 800; and (iii) a contained amount of said first particles is not less than 2% and not more than 60% of a total contained amount of the first particles and the second particles, and a ratio of the resistance of said first particle to the resistance of said second particle is not less than 5 and not more than 400.