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:
Jun. 03, 2003
Filed:
Jan. 09, 2001
Yunlong Sun, Beaverton, OR (US);
Edward J. Swenson, Portland, OR (US);
Richard S. Harris, Portland, OR (US);
Electro Scientific Industries, Inc., Portland, OR (US);
Abstract
A burst ( ) of ultrashort laser pulses ( ) is employed to sever a conductive link ( ) in a nonthermal manner and offers a wider processing window, eliminates undesirable HAZ effects, and achieves superior severed link quality. The duration of the burst ( ) is preferably in the range of 10 ns to 500 ns; and the pulse width of each laser pulse ( ) within the burst ( ) is generally shorter than 25 ps, preferably shorter than or equal to 10 ps, and most preferably about 10 ps to 100 fs or shorter. The burst ( ) can be treated as a single “pulse” by conventional laser positioning systems ( ) to perform on-the-fly link removal without stopping whenever the laser system ( ) fires a burst ( ) of laser pulses ( ) at each link ( ). Conventional wavelengths or their harmonics can be employed.