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:
Aug. 03, 2010
Filed:
Jun. 15, 2009
Applicant:
Yuji Okawa, Ibaraki, JP;
Inventor:
Yuji Okawa, Ibaraki, JP;
Assignee:
Nitto Denko Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An adhesive sheet for laser dicing is used for dicing a workpiece into individual chips by light absorption ablation of laser beam and has at least an adhesive layer on one side of a base material which has a surface opposite to the adhesive layer having no convex parts of width (W) of 20 mm or less and height (h) of 1 μm or more, or no concave parts of width (W) of 20 mm or less and depth (d) of 1 μm or more.