摘要:
Disclosed herein is a method of manufacturing semiconductor devices. The method includes the steps of forming a gate oxide film, a polysilicon film and a nitride film on a semiconductor substrate, and patterning the gate oxide film, the polysilicon film and the nitride film to form poly gates, forming a spacer at the side of the poly gate, forming a sacrifice nitride film on the entire surface, and then forming an interlayer insulation film on the entire surface, polishing the sacrifice nitride film formed on the interlayer insulation film and the poly gates so that the nitride film is exposed, removing top portions of the sacrifice nitride film while removing the nitride film, forming an insulation film spacer at the side exposed through removal of the nitride film, and filling a portion from which the sacrifice oxide film is removed with an insulation film, and forming the tungsten gates in portions from which the nitride films are moved.
摘要:
A method of forming an isolation layer of a semiconductor device includes forming first trenches in an isolation region of a semiconductor substrate. Sidewalls and a bottom surface of each of the first trenches are oxidized by a radical oxidization process to form a first oxide layer. An oxidization-prevention spacer is formed on the sidewalls of each of the first trenches. Second trenches are formed in the isolation region below the corresponding first trenches, wherein each second trench is narrower and deeper than the corresponding first trench. The second trenches are filled with a second oxide layer. The first trenches are filled with an insulating layer.
摘要:
A method of forming an isolation layer of a semiconductor device includes forming first trenches in an isolation region of a semiconductor substrate. A spacer is formed on sidewalls of each of the first trenches. Second trenches are formed in the isolation region below the corresponding first trenches. Each second trench is narrower and deeper than the corresponding first trench. A first oxide layer is formed on sidewalls and a bottom surface of each of the second trenches. The first trench is filled with an insulating layer.
摘要:
A method for fabricating a semiconductor device, in which a lifting phenomenon can be prevented from occurring in forming an amorphous carbon film on an etched layer having tensile stress. According to the invention, since a compression stress on the etched layer or the amorphous carbon film can be reduced or a compression stress film is formed between the etched layer or the amorphous carbon film to prevent a lifting phenomenon from occurring and thus another pattern can be formed to fabricate a highly integrated semiconductor device.
摘要:
A method of manufacturing a flash memory device includes the steps of forming gate patterns for cells and gate patterns for select transistors over a semiconductor substrate, forming a buffer insulating layer on the resulting surface including the gate patterns, forming an insulating layer to form void in spaces between the gate patterns for cells, forming a nitride layer on the insulating layer, and forming a spacer on one side of each of the gate patterns for select transistors by a spacer etch process.
摘要:
A method of manufacturing a flash memory device includes the steps of forming gate patterns for cells and gate patterns for select transistors over a semiconductor substrate, forming a buffer insulating layer on the resulting surface including the gate patterns, forming an insulating layer to form void in spaces between the gate patterns for cells, forming a nitride layer on the insulating layer, and forming a spacer on one side of each of the gate patterns for select transistors by a spacer etch process.
摘要:
A flash memory device includes an isolation layer formed on an isolation region of a semiconductor substrate, a tunnel insulating layer formed on an active region of the semiconductor substrate, a first conductive layer formed over the tunnel insulating layer, a dielectric layer formed on the first conductive layer and the isolation layer, the dielectric layer having a groove for exposing the isolation layer, a trench formed on the isolation layer and exposed through the groove, and a second conductive layer formed over the dielectric layer the trench.
摘要:
The invention discloses a method of forming an isolation layer in a semiconductor device. The method includes providing a semiconductor substrate having a trench formed therein; forming a first insulating layer in the trench; and forming a densified second insulating layer on the first insulating layer. In the above method, a void is not generated in the isolation layer so a bending phenomenon of an active region can be reduced or prevented to improve an electrical characteristic of the semiconductor.
摘要:
The present invention discloses to a method of forming an isolation layer in a semiconductor device. In particular, the method of forming an isolation layer in a semiconductor device of the present invention comprises the steps of providing a semiconductor substrate on which a trench is formed; forming spacers on side walls of the trench; forming a first insulating layer to fill a portion of the trench such that a deposition rate on the semiconductor substrate which is a bottom surface of the trench and exposed between the spacers is higher than that on a surface of the space; and forming a second insulating layer on the first insulating layer so as to fill the trench with the second insulating layer. An O3-TEOS layer on the exposed semiconductor substrate which is a bottom surface of the trench is grown faster than that on a surface of the spacer formed of an oxide layer or a nitride layer to prevent the O3-TEOS layers grown on the side walls from coming into contact with each other, and so it is possible to inhibit a generation of a seam and to enhance a gap-filling characteristic for the trench.
摘要:
A method of forming a metal line in a semiconductor device, including the steps of forming a metal line in a semiconductor device in which dummy patterns are formed on a dummy region by using non-metal material when a metal line is formed through a damascene process to prevent a formation of an oxide layer on an aluminum layer caused by a slurry and cleaning solution used in the chemical mechanical polishing (CMP) process and carry out an uniform polishing process, whereby it is possible to prevent a digging phenomenon on a metal layer from being generated.