Abstract:
A method of forming a semiconductor device having an offset spacer may include forming a gate electrode on a semiconductor substrate. An etch stop layer including a nitride may be formed on the entire surface of the semiconductor substrate having the gate electrode. First spacers may be formed on the sidewalls of the gate electrode. The first spacers may be formed of a material layer having an etch selectivity with respect to the etch stop layer. The etch stop layer may be exposed on the semiconductor substrate on both sides of the gate electrode. Lightly-doped drain (LDD) regions may be formed in the semiconductor substrate using the gate electrode and the first spacers as an ion implantation mask. Second spacers may be formed on the first spacers. Accordingly, a semiconductor device having an offset spacer may be provided.
Abstract:
A trench isolation type semiconductor device in which a recess is prevented from being formed in a field region and a method of fabricating the same are provided. The trench isolation type semiconductor device includes a semiconductor substrate defined by an active region and a field region, a trench formed in the field region, an oxide layer conformally formed along the inside of the trench, a liner layer conformally formed along the oxide layer, a field insulating layer formed inside the trench including the oxide layer and the liner layer, and a field protection layer formed on the field insulating layer so that a step difference does not occur on the semiconductor substrate.
Abstract:
An overlay mark includes at least one hole array formed on a semiconductor substrate and at least one linear trench adjacent to the hole array. The hole array may be formed adjacent to the linear trench along a predetermined direction. When alignment errors among patterns formed at predetermined portion of the semiconductor substrate are detected, the overlay mark may provide a contrast of light with a desired width and a high level so that alignment errors of patterns formed on the semiconductor substrate may be accurately detected and corrected using the overlay mark.
Abstract:
A method of fabricating a semiconductor device having multiple gate dielectric layers and a semiconductor device fabricated thereby, in which the method includes forming an isolation layer defining first and second active regions in a semiconductor substrate. A passivation layer is formed on the substrate having the isolation layer. A first patterning process is carried out that etches the passivation layer on the first active region to form a first opening exposing the first active region, and a first dielectric layer is formed in the exposed first active region. A second patterning process is carried out, which etches the passivation layer on the second active region to form a second opening exposing the second active region, and a second dielectric layer is formed in the exposed second active region.
Abstract:
An overlay mark includes at least one hole array formed on a semiconductor substrate and at least one linear trench adjacent to the hole array. The hole array may be formed adjacent to the linear trench along a predetermined direction. When alignment errors among patterns formed at predetermined portion of the semiconductor substrate are detected, the overlay mark may provide a contrast of light with a desired width and a high level so that alignment errors of patterns formed on the semiconductor substrate may be accurately detected and corrected using the overlay mark.
Abstract:
Disclosed is a method of forming patterns in semiconductor devices by using photo resist patterns. These methods comprise forming photo resist patterns on a substrate. Inferior patterns are selected among the photo resist patterns. The inferior patterns are eliminated or shrunken by irradiating the selected inferior patterns with an electron beam.
Abstract:
Disclosed is a method of forming patterns in semiconductor devices by using photo resist patterns. These methods comprise forming photo resist patterns on a substrate. Inferior patterns are selected among the photo resist patterns. The inferior patterns are eliminated or shrunken by irradiating the selected inferior patterns with an electron beam.
Abstract:
A trench isolation type semiconductor device in which a recess is prevented from being formed in a field region and a method of fabricating the same are provided. The trench isolation type semiconductor device includes a semiconductor substrate defined by an active region and a field region, a trench formed in the field region, an oxide layer conformally formed along the inside of the trench, a liner layer conformally formed along the oxide layer, a field insulating layer formed inside the trench including the oxide layer and the liner layer, and a field protection layer formed on the field insulating layer so that a step difference does not occur on the semiconductor substrate.
Abstract:
A method of fabricating a semiconductor device having multiple gate dielectric layers and a semiconductor device fabricated thereby, in which the method includes forming an isolation layer defining first and second active regions in a semiconductor substrate. A passivation layer is formed on the substrate having the isolation layer. A first patterning process is carried out that etches the passivation layer on the first active region to form a first opening exposing the first active region, and a first dielectric layer is formed in the exposed first active region. A second patterning process is carried out, which etches the passivation layer on the second active region to form a second opening exposing the second active region, and a second dielectric layer is formed in the exposed second active region.
Abstract:
In a method of forming a CMOS device, first and second conductive structures are formed on a substrate. An insulation layer is formed on the substrate having the first and second conductive structures. The insulation layer is patterned to form an insulation layer pattern having a first portion on the first conductive structure and a second portion on the second conductive structure. The first portion has a compressive stress and functions as an etch stop layer. The second portion functions as an etch stop layer.