Electron-emitting element and electron source, field emission image display device, and fluorescent lamp utilizing the same and methods of fabricating the same

A method of fabricating an electron-emitting element comprising a first electrode and a cold cathode member comprising conductive first particles having tips and conductive second particles, substantially all the second particles being located directly on the first electrode with substantially no first particles interposed between the second particles and the first electrode, and the first particles being located on at least a surface of the second particles, wherein one tip of each first particle is oriented in a direction away from the first electrode;

• the method comprising:
• forming a first electrode on a support member;
• and
• forming a cold cathode member by dispersing second particles over a surface of the first electrode and by dispersing first particles over at least the surface of the second particles.

An electron-emitting element comprising:

• a cold cathode member comprising a hybrid particle comprising a first particle and a second particle, the first particle being multi-legged particle;
• and
• an electron-transporting member for supplying electrons to the cold cathode member;
• the cold cathode member and the electron-transporting member located on a supporting substrate,
• wherein the second particle is adhered to a surface of the first particle so as to project from said surface.

An electron-emitting element comprising:

• a cold cathode member comprising a hybrid particle comprising a first particle and a second particle, the first particle being a conductive multi-legged particle and the second particle being a conductive fiber-shaped particle;
• and
• an electron-transporting member for supplying electrons to the cold cathode member;
• the cold cathode member and the electron-transporting member being located on a supporting substrate,
• wherein the first particle has multi-legs, each leg having a tip, at least one of the multi-legs projecting into an electron-emitted space and the rest of the legs being electrically connected to the electron-transporting member via their tips;
• and
• wherein the second particle is attached to a surface of the first particle so that a tip of the second particle projects into the electron-emitted space, the projecting tip of the second particle functioning as an electron-emitting tip.

An electron-emitting element comprising:

• a supporting substrate;
• an electron-transporting member located on the supporting substrate;
• a bonding layer located on the electron-transporting member, the bonding layer being made of a photosensitive resin;
• and
• a cold cathode member fixed to the bonding layer;
• wherein the cold cathode member comprises a hybrid particle comprising a first particle and a second particle, the first particle being a conductive multi-legged particle and the second particle being a conductive fiber-shaped particle;
• wherein the first particle has multi-legs, each leg having a tip, at least one of the multi-legs projecting into an electron-emitted space and the rest of the legs being electrically connected to the electron-transporting member via their tips;
• and
• wherein the second particle is attached to a surface of the first particle such that a tip of the second particle projects into the electron-emitted space, the projecting tip of the second particle being an electron-emitting tip.

An electron-emitting element, comprising:

• a supporting substrate;
• an electron-transporting member located on the supporting substrate;
• and
• a cold cathode member fixed to the electron-transporting member;
• wherein the cold cathode member is fixed by carbon or a carbonaceous residue of a photosensitive resin to the electron-transporting member or to the supporting substrate;
• wherein the cold cathode member comprises a hybrid particle including a first particle and a second particle.

A method of fabricating an electron-emitting element comprising:

• forming an electron-transporting member on a supporting substrate;
• forming a photosensitive resin layer on the electron-transporting member;
• patterning the photosensitive resin layer by pattern exposure to light and development;
• and
• bonding an electron-emissive material to a patterned photosensitive resin region, the electron-emissive material being a hybrid particle of a first particle and a second particle, the first particle and the second particle having different electron emission efficiencies.