Composition for forming electron emitter, electron emitter formed using the composition, electron emission device having the emitter, and backlight unit having the emitter
A composition for forming an electron emitter, an electron emitter formed using the composition, and a backlight unit including the electron emitter, where dispersion of the electron emission material in the composition is increased, and the composition includes an electron emission material, a vehicle, and carbon-based filler particles.
1. A composition for forming an electron emitter, comprising:
an electron emission material comprising carbon nanotubes;
a vehicle; and
carbon-based filler particles comprising particles of a material selected from carbon black and nanoporous carbon.
2. A composition for forming an electron emitter, comprising:
an electron emission material comprising carbon nanotubes;
a vehicle; and
carbon-based filler particles comprising nanoporous carbon particles.
3. The composition of claim 2 , wherein the nanoporous carbon particles have an average pore diameter of 0.4 through 5 nm.
4. An electron emitter, comprising:
the composition of claim 1 .
5. A backlight unit, comprising:
the electron emitter of claim 4 ;
a cathode electrically connected to the electron emitter;
an anode; and
a phosphor layer between the anode and the electron emitter,
wherein the anode accelerates electrons emitted from the electron emitter toward the phosphor layer.
6. The composition of claim 1 , wherein the vehicle comprises:
a resin component; and
a solvent component.
7. The composition of claim 6 , wherein the resin component comprises:
a cellulose-based resin, an acryl-based resin, and/or a vinyl-based resin.
8. The composition of claim 6 , wherein the resin component comprises:
a photoresist resin; and
a photo-initiator.
9. The composition of claim 6 , where in the solvent component comprises:
terpineol, butyl carbitol, butyl carbitol acetate, toluene, and/or 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate.
10. The composition of claim 1 , wherein a mass ratio of the carbon-based filler particles to the carbon nanotubes is between about 0.25 to 5.
11. The composition of claim 10 , wherein the mass ratio is between about 0.5 to 1.5.
12. The composition of claim 1 , wherein the carbon-based filler particles dissipate heat generated by electron emission.
13. A composition for forming an electron emitter, comprising:
an electron emission material comprising carbon nanotubes;
a vehicle comprising a resin component and a solvent component; and
a filler comprising nanoporous carbon particles.
14. The composition of claim 13 , wherein the nanoporous carbon particles have an average pore diameter of about 0.4 to 5 nm.