Patent ID: 8864927

Claim:
A method for making a carbon nanotube film comprising the following steps: fabricating a carbon nanotube array on a grown substrate, wherein the carbon nanotube array comprises a plurality of carbon nanotubes substantially perpendicular with the grown substrate; pressing the carbon nanotube array with a first substrate by applying a first pressing force to cause the plurality of carbon nanotubes in the carbon nanotube array being compressed onto the grown substrate and overlapped with each other to form a carbon nanotube film precursor; separating the first substrate and the grown substrate comprising the carbon nanotube film precursor, and transferring the carbon nanotube film precursor onto the first substrate; pressing the carbon nanotube film precursor on the first substrate by applying a second substrate with a second pressing force; and separating the first substrate and the second substrate, and transferring a part of the carbon nanotube film precursor to the second substrate to form a carbon nanotube film.