Semiconductor memory device and method of arranging signal...

Details Semiconductor memory device and method of arranging signal... Semiconductor memory device and method of arranging signal...

2007-01-09

2007-01-09

Elms, Richard (Department: 2824)

Static information storage and retrieval

Interconnection arrangements

C365S051000, C365S230030

Reexamination Certificate

active

11134855

ABSTRACT:
Method and apparatus for use, e.g., with Synchronous Dynamic Random Access Memory (SDRAM) circuits are disclosed. In one described embodiment, three metal layers are deposited and patterned in turn overlying a memory array portion of an SDRAM. Relatively wide power conductors are routed on a third metal layer, allowing power conductors to be reduced in size, or in some cases eliminated, on first and second metal layers. The relatively wide power conductors thus can provide a more stable power supply to the memory array, and also free some space on first and/or second metal for routing of additional and/or more widely spaced signal conductors. Other embodiments are described and claimed.

REFERENCES:
patent: 5148263 (1992-09-01), Hamai
patent: 5604697 (1997-02-01), Takahashi et al.
patent: 5831924 (1998-11-01), Nitta et al.
patent: 5930166 (1999-07-01), Jeon
patent: 5936875 (1999-08-01), Kim et al.
patent: 6359803 (2002-03-01), Tanaka
patent: 6418067 (2002-07-01), Watanabe et al.
patent: 6664634 (2003-12-01), Thompson et al.
patent: 6717833 (2004-04-01), Kitsukawa et al.
patent: 2005/0152203 (2005-07-01), Choi et al.
patent: 2006/0055045 (2006-03-01), Park et al.
patent: 2006/0056218 (2006-03-01), Park et al.
patent: 2006/0060986 (2006-03-01), Kim et al.
patent: 1998-041939 (1998-08-01), None
patent: 2002-0021201 (2002-03-01), None

Affiliated with

Also associated with

Rating

Semiconductor memory device and method of arranging signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor memory device and method of arranging signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor memory device and method of arranging signal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3800978