Composition for preparing electron emission source, method for preparing electron emission source using the composition, and electron emission source

A method for preparing an electron emission source, comprising:

• applying a composition on a substrate, the composition comprising inorganic nanotubes or inorganic nanowires dispersed in a vehicle;
• and
• heat-treating the composition applied on the substrate, the heat-treating yielding residual carbon being 20 to 300 parts by weight, based on 100 parts by weight of the inorganic nanotubes or inorganic nanowires,
• wherein the inorganic nanotubes or the inorganic nanowires comprise a nitride, a carbide, a oxide, a sulfide, or a phosphide including at least one element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element, a group 12 element, Ga, In and Si.

An electron emission source, comprising:

• inorganic nanotubes or inorganic nanowires;
• and
• a residual carbon,
• wherein the residual carbon is 20 to 300 parts by weight, based on 100 parts by weight of the inorganic nanotubes or inorganic nanowires, and
• wherein the inorganic nanotubes or the inorganic nanowires comprise a nitride, a carbide, a oxide, a sulfide, or a phosphide including at least one element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element, a group 12 element, Ga, In and Si.

An electron emission device, comprising:

• a first substrate and a second substrate disposed opposite to each other;
• a cathode electrode on the first substrate;
• an electron emission source coupled with the cathode electrode;
• an anode electrode on the second substrate;
• and
• a fluorescent layer emitting light by an electron emitted from the electron emission source,
• wherein the electron emission source comprises inorganic nanotubes or inorganic nanowires and a residual carbon,
• wherein the residual carbon is 20 to 300 parts by weight, based on 100 parts by weight of the inorganic nanotubes or inorganic nanowires, and
• wherein the inorganic nanotubes or the inorganic nanowires comprise a nitride, a carbide, a oxide, a sulfide, or a phosphide including at least one element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element, a group 12 element, Ga, In and Si.

An electron emission source, comprising:

• inorganic nanotubes or inorganic nanowires;
• and
• a residual carbon,
• wherein the residual carbon is a solid material remaining after heat treatment of an exposure product of a vehicle comprising organic compounds, and
• wherein the inorganic nanotubes or the inorganic nanowires comprise a nitride, a carbide, a oxide, a sulfide, or a phosphide including at least one element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element, a group 12 element, Ga, In and Si.

An electron emission device, comprising:

• a first substrate and a second substrate disposed opposite to each other;
• a cathode electrode on the first substrate;
• an electron emission source coupled with the cathode electrode;
• an anode electrode on the second substrate;
• and
• a fluorescent layer emitting light by an electron emitted from the electron emission source,
• wherein the electron emission source comprises inorganic nanotubes or inorganic nanowires, and a residual carbon, the residual carbon being a solid material remaining after heat treatment of an exposure product of a vehicle comprising organic compounds, and wherein the inorganic nanotubes or the inorganic nanowires comprise a nitride, a carbide, a oxide, a sulfide, or a phosphide including at least one element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element, a group 12 element, Ga, In and Si.

A composition for preparing an electron emission source, the composition comprising:

• a vehicle;
• and
• inorganic nanotubes or inorganic nanowires dispersed in the vehicle,
• wherein the composition, when heated, provides a residual carbon being 20 to 300 parts by weight, based on 100 parts by weight of the inorganic nanotubes or inorganic nanowires.