Static information storage and retrieval – Hardware for storage elements – Shields
Patent
1998-03-30
1999-10-26
Phan, Trong
Static information storage and retrieval
Hardware for storage elements
Shields
365149, 365 51, 365 63, 365226, 257296, G11C 702, G11C 502, G11C 700, H01L 27108
Patent
active
059739525
ABSTRACT:
A shielding conductor is spaced from a matrix of memory cells in a dynamic random access memory (DRAM) to shield the memory cells from noise signals, such as the noise created by components of a system level integrated circuit (SLIC). The shielding conductor is connected to one of a reference or potential source, preferably external to the DRAM segment. The shielding conductor distributes the effect of noise and maintains a uniform reference potential with respect to the DRAM components with which it overlays or connects. The shielding conductor comprises a plurality of connected intersecting conductors which form a mesh which overlays substantially the entire matrix. The mesh is connected to components, such as an isolating well or a capacitor reference potential conductor, at a plurality of spaced-apart locations over the entire matrix. The shielding conductor may also be a single integral conductor which overlays the entire matrix, including the bit and word lines.
REFERENCES:
patent: 5375095 (1994-12-01), Yamada et al.
patent: 5650975 (1997-07-01), Hamade et al.
patent: 5668755 (1997-09-01), Hidaka
patent: 5694355 (1997-12-01), Skjaveland et al.
Bailey Wayne P.
Ley John R.
LSI Logic Corporation
Phan Trong
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