The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 2010
Filed:
Dec. 13, 2006
Nyan-hwa Tai, Hsinchu, TW;
Chien-chao Chiu, Taipei Hsien, TW;
Tsung-yen Tsai, Changhua Hsien, TW;
National Tsing Hua University, Hsinchu, TW;
Abstract
A method for producing a carbon nanotube array element includes the steps of: providing a first substrate coated with a conductive paste layer; forming an array of thin film blocks of catalyst on a second substrate; forming each of the thin film blocks into islands of catalyst; forming carbon nanotube bundles on the islands of catalyst, each of the carbon nanotube bundles including a plurality of carbon nanotubes and having a free end portion; pressing the second substrate toward the first substrate such that the free end portions insert into the conductive paste layer; solidifying the conductive paste layer; and removing the second substrate together with the islands of catalyst from the carbon nanotube bundles, thereby forming an open end for each of the carbon nanotubes. A carbon nanotube array element for a field emission cathode device is also disclosed.