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. 08, 2004
Filed:
Mar. 31, 2003
Fumio Echigo, Osaka, JP;
Hideki Higashitani, Kyoto, JP;
Daizo Andoh, Osaka, JP;
Noritake Fukuda, Tokyo, JP;
Yasuhiro Nakatani, Osaka, JP;
Tadashi Nakamura, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Removable mask films are formed on the both sides of the substrate having the adhesive layer by applying and drying a resin varnish including a ultraviolet-absorbing agent, and fine through holes are formed by using a third harmonics YAG solid-state laser light with a relatively short wavelength not longer than that in the ultraviolet range in such a way that the effects of such a residual strain as the conventional embodiment forming a removable mask film by a laminating process may be decreased as well as the more fine hole drilling compared with conventional embodiment using the carbon dioxide gas laser with a relatively long wavelength may be performed.