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US 9,177,962 B2Granted
Semiconductor device
AssigneePS4 Luxco S.a.r.l.
InventorKoji Taniguchi
Life of this patent
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Abstract
Provided is a semiconductor device wherein chip size is reduced, while potential on the dummy word lines is fixed. The semiconductor device is provided with: a memory cell array including a plurality of memory cells, a plurality of word lines for controlling memory operations of the plurality of memory cells, and a plurality of dummy word lines that do not participate in memory operations of the plurality of memory cells; and a guard ring surrounding the memory cell array. The plurality of dummy word lines are electrically fixed to the guard ring.
Claims4
A semiconductor device comprising:
- a memory cell array including a plurality of memory cells, a plurality of word lines which control storage operations of the abovementioned plurality of memory cells, and a plurality of dummy word lines which do not contribute to the storage operations of the abovementioned plurality of memory cells;
- and
- a guard ring surrounding the abovementioned memory cell array,
- the abovementioned plurality of dummy word lines being electrically fixed to the abovementioned guard ring.
1 more element
Dependencies are inferred from the claim text.