Semiconductor memory device
First Claim
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1. A semiconductor memory device comprising:
- a plurality of conducting layers and a plurality of insulating layers that are alternately disposed above a semiconductor substrate;
a plurality of pillars that extend through the alternately-disposed layers of the conductive layers and the insulating layers in a first direction which crosses a surface of the semiconductor substrate, the plurality of pillars being arranged in a second direction along the surface of the semiconductor substrate; and
a plate that extends through the alternately-disposed layers of the conductive layers and the insulating layers in the first direction, extends in the second direction, and is disposed apart from the plurality of pillars in a third direction along the surface of the semiconductor substrate, the third direction being different from the second direction,wherein the plate has convex portions and non-convex portions alternately arranged on a side of the plate in the second direction, the convex portions and the non-convex portions both extend through the alternately-disposed layers of the conductive layers and the insulating layers in the first direction, and the convex portions and at least part of the plurality of pillars are arranged in a staggered manner.
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Abstract
A semiconductor memory device includes a conducting layer and an insulating layer that are disposed above a semiconductor substrate, a plurality of pillars that extend in a direction which crosses a surface of the semiconductor substrate, and a plate that is disposed between the plurality of pillars and extends in the same direction as the pillars. A surface of the plate, which faces the pillars, has convex portions and non-convex portions.
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Citations
20 Claims
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1. A semiconductor memory device comprising:
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a plurality of conducting layers and a plurality of insulating layers that are alternately disposed above a semiconductor substrate; a plurality of pillars that extend through the alternately-disposed layers of the conductive layers and the insulating layers in a first direction which crosses a surface of the semiconductor substrate, the plurality of pillars being arranged in a second direction along the surface of the semiconductor substrate; and a plate that extends through the alternately-disposed layers of the conductive layers and the insulating layers in the first direction, extends in the second direction, and is disposed apart from the plurality of pillars in a third direction along the surface of the semiconductor substrate, the third direction being different from the second direction, wherein the plate has convex portions and non-convex portions alternately arranged on a side of the plate in the second direction, the convex portions and the non-convex portions both extend through the alternately-disposed layers of the conductive layers and the insulating layers in the first direction, and the convex portions and at least part of the plurality of pillars are arranged in a staggered manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A semiconductor memory device comprising:
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a plurality of conducting layers and a plurality of insulating layers that are alternately disposed above a semiconductor substrate; a plurality of pillars that extend through the alternately-disposed layers of the conductive layers and the insulating layers in a first direction which crosses a surface of the semiconductor substrate, the plurality of pillars including a first pillar and a second pillar disposed adjacent to each other in a second direction along the surface of the semiconductor substrate; and a plate that extends through the alternately-disposed layers of the conductive layers and the insulating layers in the first direction, extends in the second direction, and is disposed apart from the plurality of pillars in a third direction along the surface of the semiconductor substrate, the third direction being different from the second direction, wherein the plate has convex portions and non-convex portions alternately arranged on a side of the plate in the second direction, the convex portions and the non-convex portions both extend through the alternately-disposed layers of the conductive layers and the insulating layers in the first direction, and the convex portions include a first convex portion having a center positioned between a center of the first pillar and a center of the second pillar in the second direction. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification