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:
Nov. 11, 2003
Filed:
Jun. 07, 2000
Kenneth A. Dean, Phoenix, AZ (US);
Babu R. Chalamala, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for improving uniformity of emission current of a field emission display ( ) includes the step of providing a first carbon nanotube ( ) and a second carbon nanotube ( ), which at least partially define an electron emitter ( ). First carbon nantotube ( ) is characterized by a first emission current capability and second carbon nanotube ( ) is characterized by a second emission current capability, which is less than the first emission current capability. The method further includes the steps of causing first carbon nanotube ( ) to be reduced in length at a first rate and, concurrently, causing second carbon nanotube ( ) to be reduced in length at a second rate, which is less than the first rate and can be equal to zero, thereby reducing the difference between the second emission current capability and the first emission current capability and, thus, improving uniformity of emission current. The selective reductions in length are preferably achieved by performing the step of causing a burn-in current to be emitted by electron emitter ( ).