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:
Sep. 01, 2009
Filed:
Oct. 05, 2004
Kenji Noda, Osaka, JP;
Shin Hashimoto, Osaka, JP;
Kenji Noda, Osaka, JP;
Shin Hashimoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A photomask includes, on a translucent substrate, three or more first light-shielding portions each in insular shape having a property of shielding exposure light and spaced equidistantly, a second light-shielding portion having a property of shielding the exposure light and formed to connect the adjacent first light-shielding portions, and first light-transmitting portions each in slit shape having a property of transmitting the exposure light and formed to be surrounded with the first and second light-shielding portions. The second light-shielding portion is formed to contain a point located equidistantly from the three or more first light-shielding portions.