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:
Jan. 10, 2012
Filed:
Mar. 02, 2010
Yukihiro Yamashita, Niigata, JP;
Yukihiro Yamashita, Niigata, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A non-volatile semiconductor memory device includes a plurality of memory cell regions including a plurality of bit lines, a plurality of word lines intersecting the plurality of bit lines, and a first insulating film formed in a region between any two adjacent bit lines, a bit line contact region including bit line contacts connected to the plurality of bit lines, a first UV light shielding film covering at least a portion of the semiconductor substrate in the bit line contact region, an interlayer insulating film, and a second UV light shielding film covering the plurality of memory cell regions. The first UV light shielding film effectively reduces or blocks UV light generated during a fabrication step.