Patent ID: 8841588

Claim:
A heater, comprising: a substrate; a plurality of first electrode down-leads; a plurality of second electrode down-leads; and the plurality of first electrode down-leads and the plurality of second electrode down-leads define a plurality of grids; at least one grid comprises a heating unit; and the heating unit comprises a first electrode, a second electrode, and a heating element; wherein the first electrode and the second electrode are electrically connected to the heating element and the heating element comprises a carbon nanotube structure; the carbon nanotube structure continuously extends from the first electrode to the second electrode so that an electric current is capable of flowing from the first electrode to the second electrode through the carbon nanotube structure; and the plurality of first electrode down-leads are insulated from each other, the plurality of second electrode down-leads are insulated from each other, and the heating unit are controlled and selected only by one of the plurality of first electrode down-leads and one of the plurality of second electrode down-leads.