Abstract:
A chemical mechanical polishing apparatus includes a first polishing pad for polishing a substrate, a first polishing head on the first polishing pad to support a substrate, and a second polishing pad spaced apart from the first polishing pad in a horizontal direction. A radius of the second polishing pad is less than a radius of the first polishing pad.
Abstract:
Provided are a three-dimensional semiconductor memory device and a method of fabricating the same. The device may include a substrate including a peripheral circuit region and a cell array region, peripheral gate stacks provided on the peripheral circuit region of the substrate, and an electrode structure provided on the cell array region of the substrate. The electrode structure may include a lower electrode, a lower insulating layer covering the lower electrode, and upper electrodes and upper insulating layers, which are vertically and alternately stacked on the lower insulating layer. The lower insulating layer may be extended from the cell array region to the peripheral circuit region to cover the peripheral gate stacks, and a top surface of the lower insulating layer may be higher on the peripheral circuit region than on the cell array region.
Abstract:
Semiconductor devices may include a substrate, gate electrodes on the substrate, and source/drain regions at both sides of each of the gate electrodes. Each of the gate electrodes may include a gate insulating pattern on the substrate, a lower work-function electrode pattern that is on the gate insulating pattern and has a recessed upper surface, and an upper work-function electrode pattern that conformally extends on the recessed upper surface of the lower work function electrode pattern. Topmost surfaces of the lower work-function electrode patterns may be disposed at an equal level, and the upper work-function electrode patterns may have different thicknesses from each other.
Abstract:
A semiconductor may include a substrate including a cell array region and a TSV region, an insulation layer disposed on the substrate and having a recess region on the TSV region, a capacitor on the insulation layer of the cell array region, a dummy support pattern disposed on the insulation layer of the TSV region and overlapping the recess region, when viewed in plan, and a TSV electrode penetrating the dummy support pattern and the substrate.
Abstract:
A semiconductor device includes an active pattern protruding from a substrate, gate structures crossing over the active pattern, gate spacers on sidewalls of the gate structures, a source/drain region in the active pattern between the gate structures, and a source/drain contact on and connected to the source/drain region. The source/drain contact includes a first portion between the gate structures and being in contact with the gate spacers, a second portion on the first portion and not being in contact with the gate spacers, and a third portion on the second portion. A first boundary between the second and third portions is at the substantially same height as a top surface of the gate structure.
Abstract:
A semiconductor device is manufactured using dual metal silicide layers. The semiconductor device includes a substrate having first and second regions, a first metal gate electrode on the substrate in the first region, a second metal gate electrode on the substrate in the second region, a first epitaxial layer on and in the substrate at both sides of the first metal gate electrode, a second epitaxial layer on and in the substrate at both sides of the second metal gate electrode, a first metal silicide layer on the first epitaxial layer, a second metal silicide layer on the second epitaxial layer, an interlayer dielectric layer on the first and second metal silicide layers, contact plugs passing through the interlayer dielectric layer and electrically connected to the first and second metal silicide layers.
Abstract:
Methods for manufacturing a semiconductor device having a dual gate dielectric layer may include providing a substrate including first and second regions, forming a first gate dielectric layer having a first thickness on the substrate, forming an interlayer insulating layer including first and second trenches exposing the first gate dielectric layer in the first and second regions, forming a sacrificial layer on the interlayer insulating layer and bottoms of the first and second trenches, forming a sacrificial pattern exposing the first gate dielectric layer of the bottom of the first trench, removing the first gate dielectric layer of the bottom of the first trench, forming a second gate dielectric layer having a second thickness on the bottom of the first trench, removing the sacrificial pattern, and forming a gate electrode on each of the first and second gate dielectric layers.
Abstract:
A substrate polishing apparatus includes a polishing pad including a magnetic material, a platen having an upper surface to which the polishing pad is attached, a slurry supply unit installed on the polishing pad, a conditioner installed on the polishing pad to be spaced apart from the slurry supply unit in the one direction and configured to fine-polish a surface of the polishing pad, a polishing head installed on the polishing pad to be spaced apart from the conditioner in the one direction and configured to rotate a polishing target, and a magnetic module installed on the polishing pad to be disposed between the conditioner and the polishing head in the one direction and configured to apply magnetic force to polishing pad debris to remove the polishing pad debris.
Abstract:
A polishing apparatus for a substrate, includes: a polishing pad having at least one region formed of a light-transmitting material; a platen on which the polishing pad is disposed on an upper surface thereof, having a groove portion in a region overlapping the polishing pad, and rotatably installed in one direction; a light source unit accommodated in the groove portion of the platen, and emitting light of a predetermined wavelength band to the one region of the polishing pad; a slurry supply unit supplying a slurry containing photocatalyst particles excited by the light of the predetermined wavelength band to the polishing pad; and a polishing head installed on the polishing pad to be spaced apart from the slurry supply unit in the one direction, and rotating a semiconductor substrate in close contact with the polishing pad.
Abstract:
A substrate cleaning device, includes: a substrate cleaning module including first and second roll members adjacent to lower and upper surfaces of a substrate, respectively, first and second driving units configured to move the first and second roll members, a first roll cleaning module including a roll receiving region, a first cleaning solution supply unit supplying a first cleaning solution, and an ultrasonic generating unit applying ultrasonic vibrations; a second roll cleaning module including a housing, a brush pad in the housing, and a second cleaning solution supply unit supplying a second cleaning solution; and a control unit controlling the first driving unit so that the first roll member contacts the substrate lower surface or is accommodated in the roll receiving region, and to control the second driving unit so that the second roll member contacts the substrate upper surface or is seated on the brush pad.