VERTICAL CELL-TYPE SEMICONDUCTOR DEVICE HAVING PROTECTIVE PATTERN
First Claim
1. A semiconductor device, comprising:
- a substrate;
a stacked structure including interlayer insulating layers and gate electrodes alternately stacked on the substrate, the stacked structure defining a through-hole, each of the gate electrodes including a portion in which a vertical width thereof is reduced with the approach to one end thereof; and
a vertical structure in the through-hole, the vertical structure including a gap-fill pattern in a middle of the through-hole, a channel pattern surrounding an outer surface of the gap-fill pattern, and a gate dielectric layer surrounding an outer surface of the channel pattern, andthe gate dielectric layer includes a tunneling layer in contact with the channel pattern, a charge trap layer in contact with the tunneling layer, a barrier layer in contact with the charge trap layer, and protective patterns,each one of the protective patterns being between the barrier layer and one of the gate electrodes, andeach one of the protective patterns extending between two of the interlayer insulating layers and the protective patterns surround the portions of the gate electrodes in which the vertical width thereof is reduced.
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Accused Products
Abstract
According to example embodiments of inventive concepts, a semiconductor device includes: a substrate, and a stacked structure including interlayer insulating layers and gate electrodes alternately stacked on the substrate. The stacked structure defines a through-hole over the substrate. The gate electrodes each include a first portion between the through-hole and a second portion of the gate electrodes. A channel pattern may be in the through-hole. A tunneling layer may surround the channel pattern. A charge trap layer may surround the tunneling layer, and protective patterns may surround the first portions of the gate electrodes. The protective patterns may be between the first portions of the gate electrodes and the charge trap layer.
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Citations
20 Claims
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1. A semiconductor device, comprising:
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a substrate; a stacked structure including interlayer insulating layers and gate electrodes alternately stacked on the substrate, the stacked structure defining a through-hole, each of the gate electrodes including a portion in which a vertical width thereof is reduced with the approach to one end thereof; and a vertical structure in the through-hole, the vertical structure including a gap-fill pattern in a middle of the through-hole, a channel pattern surrounding an outer surface of the gap-fill pattern, and a gate dielectric layer surrounding an outer surface of the channel pattern, and the gate dielectric layer includes a tunneling layer in contact with the channel pattern, a charge trap layer in contact with the tunneling layer, a barrier layer in contact with the charge trap layer, and protective patterns, each one of the protective patterns being between the barrier layer and one of the gate electrodes, and each one of the protective patterns extending between two of the interlayer insulating layers and the protective patterns surround the portions of the gate electrodes in which the vertical width thereof is reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A semiconductor device, comprising:
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a substrate; a stacked structure including interlayer insulating layers and gate electrodes alternately stacked on the substrate, the stacked structure defining a through-hole, each of the gate electrodes including a portion in which a vertical width thereof is reduced with the approach to one end thereof; and a vertical structure in the through-hole, the vertical structure including a gap-fill pattern in a middle of the through-hole, a channel pattern surrounding an outer surface of the gap-fill pattern, and a gate dielectric layer surrounding an outer surface of the channel pattern, and the gate dielectric layer includes a tunneling layer in contact with the channel pattern, a charge trap layer in contact with the tunneling layer, a protective layer in contact with the charge trap layer, and protective patterns that are integral with the protective layer, the protective patterns extending to the gate electrodes, and surround the portions of the gate electrodes in which the vertical width is reduced. - View Dependent Claims (14, 15)
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16. A semiconductor device, comprising:
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a substrate; a stacked structure including interlayer insulating layers and gate electrodes alternately stacked on the substrate, the stacked structure defining a through-hole over the substrate, the gate electrodes each including a first portion between the through-hole and a second portion of the gate electrodes; a channel pattern extending vertically in the through-hole over the substrate; a tunneling layer surrounding the channel pattern; a charge trap layer surrounding the tunneling layer; and protective patterns surrounding the first portions of the gate electrodes, the protective patterns between the first portions of the gate electrodes and the charge trap layer. - View Dependent Claims (17, 18, 19, 20)
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Specification