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:
May. 03, 2011
Filed:
Nov. 10, 2005
Naoya Saiki, Koshigaya, JP;
Tomonori Shinoda, Saitama, JP;
Akie Hamasaki, Itabashi-ku, JP;
Lintec Corporation, Tokyo, JP;
Abstract
The invention provides a marking method in which marking is performed on a protective film formed on a work with a high accuracy while suppressing a warpage and, also, a sheet for both protective film forming and dicing which is advantageously used in the method. The marking method comprises irradiating laser light to a laminated structure comprising a support film tensely supported by a ring frame, a protective film releasably laminated on the support film and a work fixed to the protective film, wherein the protective film is irradiated laser light from a side of the support film, to thereby mark the protective film.