Abstract:
Provided is a staircase-shaped connection structure of a three-dimensional semiconductor device. The device includes an electrode structure on a substrate, the electrode structure including an upper staircase region, a lower staircase region, and a buffer region therebetween. The electrode structure includes horizontal electrodes sequentially stacked on the substrate, the horizontal electrodes include a plurality of pad regions constituting a staircase structure of each of the upper and lower staircase regions, and the buffer region has a width that is larger than that of each of the pad regions.
Abstract:
Provided is a staircase-shaped connection structure of a three-dimensional semiconductor device. The device includes an electrode structure on a substrate, the electrode structure including an upper staircase region, a lower staircase region, and a buffer region therebetween. The electrode structure includes horizontal electrodes sequentially stacked on the substrate, the horizontal electrodes include a plurality of pad regions constituting a staircase structure of each of the upper and lower staircase regions, and the buffer region has a width that is larger than that of each of the pad regions.
Abstract:
Integrated circuit devices and methods of forming the same are provided. The devices may include a substrate including a cell region and an extension region and conductive layers stacked on the cell region in a vertical direction. The conductive layers may extend onto the extension region and may have a stair-step structure on the extension region. The devices may also include vertical structures on the substrate. Each of the vertical structures may extend in the vertical direction, and the vertical structures may include a first vertical structure on the cell region and a second vertical structure on the extension region. The first vertical structure may extend through the conductive layers and may include a first channel layer, the second vertical structure may be in the stair-step structure and may include a second channel layer, and the second channel layer may be spaced apart from the substrate in the vertical direction.