Patent ID: 8398927

Claim:
A carbon nanotube manufacturing apparatus comprising: a plasma generating unit that generates plasma including ions, radicals, and electrons, from gas; a carbon nanotube manufacturing unit that manufactures carbon nanotubes from the radicals; a shielding electrode unit that is provided between the plasma generating unit and the carbon nanotube manufacturing unit and prevents the ions and the electrons from entering the carbon nanotube manufacturing unit; and a bias applying unit that applies a voltage to the shielding electrode unit, wherein the shielding electrode unit includes at least two first shielding electrodes that are arranged one above another, each of the first shielding electrodes having at least one opening, wherein openings that are respectively provided in the first shielding electrodes positioned adjacent to each other are positioned to be laterally displaced from each other without overlap to prevent the ions or the electrons from going through both of the openings.