Abstract:
A semiconductor device includes a substrate including a first region and a second region, a first gate dielectric layer, a first lower gate electrode, and a first upper gate electrode sequentially stacked on the first region, a second gate dielectric layer, a second lower gate electrode, and a second upper gate electrode sequentially stacked on the second region, a first spacer disposed on a sidewall of the first upper gate electrode, a second spacer disposed on a sidewall of the second upper gate electrode, a third spacer covering the first spacer on the sidewall of the first upper gate electrode, and a fourth spacer covering the second spacer on the sidewall of the second upper gate electrode. At least one of a first sidewall of the first lower gate electrode and a second sidewall of the first lower gate electrode is in contact with the third spacer.
Abstract:
A method of controlling an etching process for forming fine patterns of a semiconductor device includes forming a lower pattern having a plurality of openings on a substrate, obtaining a width value of the lower pattern, and controlling a process recipe of an etching process for forming the lower pattern by using the width value.
Abstract:
A semiconductor device includes a substrate including a first region and a second region, a first gate dielectric layer, a first lower gate electrode, and a first upper gate electrode sequentially stacked on the first region, a second gate dielectric layer, a second lower gate electrode, and a second upper gate electrode sequentially stacked on the second region, a first spacer disposed on a sidewall of the first upper gate electrode, a second spacer disposed on a sidewall of the second upper gate electrode, a third spacer covering the first spacer on the sidewall of the first upper gate electrode, and a fourth spacer covering the second spacer on the sidewall of the second upper gate electrode. At least one of a first sidewall of the first lower gate electrode and a second sidewall of the first lower gate electrode is in contact with the third spacer.
Abstract:
A semiconductor device includes a device isolation layer provided on a substrate, the device isolation layer defining first and second sub-active patterns, first and second gate electrodes crossing the first and second sub-active patterns, respectively, and an isolation structure provided on the device isolation layer between the first and second sub-active patterns. The first and second sub-active patterns extend in a first direction and are spaced apart from each other in the first direction. The device isolation layer includes a diffusion break region disposed between the first and second sub-active patterns. The isolation structure covers a top surface of the diffusion break region.
Abstract:
A semiconductor device includes a first active pattern and a second active pattern on a substrate, a first gate electrode and a second gate electrode respectively across the first active pattern and the second active pattern, a first insulation pattern between and separating the first and second gate electrodes, a gate spacer on a sidewall of the first gate electrode, on a sidewall of the second gate electrode, and on a sidewall of the first insulation pattern, and a second insulation pattern between the gate spacer and the sidewall of the first insulation pattern, wherein the first gate electrode, the first insulation pattern, and the second gate electrode are arranged along a first direction, and wherein the gate spacer extends in the first direction.
Abstract:
A semiconductor device includes a device isolation layer provided on a substrate, the device isolation layer defining first and second sub-active patterns, first and second gate electrodes crossing the first and second sub-active patterns, respectively, and an isolation structure provided on the device isolation layer between the first and second sub-active patterns. The first and second sub-active patterns extend in a first direction and are spaced apart from each other in the first direction. The device isolation layer includes a diffusion break region disposed between the first and second sub-active patterns. The isolation structure covers a top surface of the diffusion break region.
Abstract:
A method of fabricating a semiconductor device may include forming trenches in a substrate to define a fin structure extending in a direction, forming a device isolation layer to fill the trenches, and removing an upper portion of the device isolation layer to expose an upper side surface of the fin structure. The exposing of the upper side surface of the fin structure may include repeatedly performing an etching cycle including a first step and a second step, and an etching rate of the device isolation layer to the fin structure may be higher in the second step than in the first step.
Abstract:
Semiconductor devices and methods of fabricating the same are provided. The semiconductor devices may include gate electrodes on a substrate. A longitudinal direction of each of the gate electrodes may extend in a first direction, and ones of the gate electrodes may be arranged in the first direction. The semiconductor devices may also include first and second gate spacers extending in the first direction and on respective sidewalls of the ones of the gate electrodes. The first and second gate spacers may be spaced apart from each other in a second direction that is different from the first direction. The semiconductor devices may further include gate separation patterns, and ones of the gate separation patterns may be between two among the ones of the gate electrodes adjacent to each other in the first direction and between the first and second gate spacers.
Abstract:
A semiconductor device includes a substrate including a first region and a second region, a first gate dielectric layer, a first lower gate electrode, and a first upper gate electrode sequentially stacked on the first region, a second gate dielectric layer, a second lower gate electrode, and a second upper gate electrode sequentially stacked on the second region, a first spacer disposed on a sidewall of the first upper gate electrode, a second spacer disposed on a sidewall of the second upper gate electrode, a third spacer covering the first spacer on the sidewall of the first upper gate electrode, and a fourth spacer covering the second spacer on the sidewall of the second upper gate electrode. At least one of a first sidewall of the first lower gate electrode and a second sidewall of the first lower gate electrode is in contact with the third spacer.
Abstract:
A semiconductor device includes a substrate including a first region and a second region, a first gate dielectric layer, a first lower gate electrode, and a first upper gate electrode sequentially stacked on the first region, a second gate dielectric layer, a second lower gate electrode, and a second upper gate electrode sequentially stacked on the second region, a first spacer disposed on a sidewall of the first upper gate electrode, a second spacer disposed on a sidewall of the second upper gate electrode, a third spacer covering the first spacer on the sidewall of the first upper gate electrode, and a fourth spacer covering the second spacer on the sidewall of the second upper gate electrode. At least one of a first sidewall of the first lower gate electrode and a second sidewall of the first lower gate electrode is in contact with the third spacer.