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:
Feb. 24, 2009
Filed:
Nov. 10, 2005
Satoru Kodaira, Chino, JP;
Noboru Itomi, Nirasaki, JP;
Shuji Kawaguchi, Suwa, JP;
Takashi Kumagai, Chino, JP;
Hisanobu Ishiyama, Chino, JP;
Kazuhiro Maekawa, Chino, JP;
Satoru Kodaira, Chino, JP;
Noboru Itomi, Nirasaki, JP;
Shuji Kawaguchi, Suwa, JP;
Takashi Kumagai, Chino, JP;
Hisanobu Ishiyama, Chino, JP;
Kazuhiro Maekawa, Chino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An integrated circuit device having a display memory, wherein a plurality of first power supply interconnects VSSL for supplying a first power supply voltage VSS to memory cells MC are formed in a metal interconnect layer in which a plurality of wordlines WL are formed; and wherein a plurality of second power supply interconnects VDDL for supplying a second power supply voltage VDD to the memory cells are formed in another metal interconnect layer in which a plurality of bitlines BL are formed, the second power supply voltage VDD being higher than the first power supply voltage VSS. A plurality of bitline protection interconnects SHD are formed in a layer above the bitlines BL, and each of the bitline protection interconnects SHD at least partially covers one of the bitlines BL in a plan view. A third power supply interconnect GL for supplying a third power supply voltage to circuits other than the display memory are formed in a layer above the bitline protection interconnects SHD, the third power supply voltage being higher than the second power supply voltage VDD.