THREE-DIMENSIONAL SEMICONDUCTOR DEVICE
First Claim
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1. A three-dimensional semiconductor device comprising:
- a lower structure;
a stacked structure disposed in a first region and a second region on the lower structure, the stacked structure including gate patterns stacked in a vertical direction, perpendicular to an upper surface of the lower structure, the gate patterns including pad regions disposed in a stepped structure in the second region; and
vertical channel structures disposed on the lower structure and having a side surface facing the gate patterns, wherein;
the stacked structure includes a first stacked region, a second stacked region and a third stacked region that are sequentially arranged in the second region in a first direction,the first stacked region includes a first stepped region, having a stepped structure changing in a unit of a first height,the second stacked region includes a second stepped region, having a stepped structure, lowered in a unit of a second height, greater than the first height in the first direction,the third stacked region includes an upwardly stepped region and a downwardly stepped region,the upwardly stepped region of the third stacked region has a stepped structure raising in a unit of the second height in the first direction, andthe downwardly stepped region of the third stacked region has a stepped structure lowered in a unit of the second height in the first direction.
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Abstract
A three-dimensional semiconductor device includes a first gate group on a lower structure and a second gate group on the first gate group. The first gate group includes first pad regions that are: (1) lowered in a first direction that is parallel to an upper surface of the lower structure and (2) raised in a second direction that is parallel to an upper surface of the lower structure and perpendicular to the first direction. The second gate group includes second pad regions that are sequentially raised in the first direction and raised in the second direction.
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Citations
43 Claims
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1. A three-dimensional semiconductor device comprising:
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a lower structure; a stacked structure disposed in a first region and a second region on the lower structure, the stacked structure including gate patterns stacked in a vertical direction, perpendicular to an upper surface of the lower structure, the gate patterns including pad regions disposed in a stepped structure in the second region; and vertical channel structures disposed on the lower structure and having a side surface facing the gate patterns, wherein; the stacked structure includes a first stacked region, a second stacked region and a third stacked region that are sequentially arranged in the second region in a first direction, the first stacked region includes a first stepped region, having a stepped structure changing in a unit of a first height, the second stacked region includes a second stepped region, having a stepped structure, lowered in a unit of a second height, greater than the first height in the first direction, the third stacked region includes an upwardly stepped region and a downwardly stepped region, the upwardly stepped region of the third stacked region has a stepped structure raising in a unit of the second height in the first direction, and the downwardly stepped region of the third stacked region has a stepped structure lowered in a unit of the second height in the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 14, 15, 20, 21, 22)
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7-13. -13. (canceled)
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16-19. -19. (canceled)
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23. A three-dimensional semiconductor device comprising:
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a lower structure; a stacked structure disposed on the lower structure, and including gate patterns stacked in a vertical direction, perpendicular to an upper surface of the lower structure; and vertical channel structures disposed on the lower structure and having a side surface facing the gate patterns, wherein; the stacked structure includes an upwardly stepped region in which pad regions that are raised in a first direction are positioned, and a downwardly stepped region in which pad regions lowered in the first direction are positioned, the upwardly stepped region and the downwardly stepped region are sequentially arranged in the first direction, the upwardly stepped region includes a first upwardly stepped region and a second upwardly stepped region, positioned on different height levels and are sequentially arranged in a second direction, the downwardly stepped region includes a first downwardly stepped region and a second downwardly stepped region, positioned on different height levels and are sequentially arranged in the second direction, and the second direction is parallel to an upper surface of the lower structure and perpendicular to the first direction. - View Dependent Claims (24, 25)
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26-29. -29. (canceled)
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30. A three-dimensional semiconductor device comprising:
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a first gate group on a lower structure; and a second gate group on the first gate group, wherein; the first gate group includes first pad regions lowered in a first direction, parallel to an upper surface of the lower structure and that are raised in a second direction, parallel to an upper surface of the lower structure and perpendicular to the first direction, and the second gate group includes second pad regions that are sequentially raised in the first direction and are raised in the second direction. - View Dependent Claims (32, 40, 41, 42, 43)
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31. (canceled)
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33-39. -39. (canceled)
Specification