摘要:
A semiconductor device having a cell area and a peripheral area includes a semiconductor substrate, a cell insulating isolation region delimiting a cell active region of the semiconductor substrate in the cell area, a word line disposed within the semiconductor substrate in the cell area, a bit line contact plug disposed on the cell active region, a bit line disposed on the bit line contact plug, a peripheral insulating isolation region delimiting a peripheral active region of the semiconductor substrate in the peripheral area, and a peripheral transistor including a peripheral transistor lower electrode and a peripheral transistor upper electrode. The bit line contact plug is formed at the same level in the semiconductor device as the peripheral transistor lower electrode, and the bit line electrode is formed at the same level in the semiconductor device as the peripheral transistor upper electrode.
摘要:
A method of forming a semiconductor device includes forming a lower conductive pattern on a substrate, forming an insulating layer over the lower conductive pattern, forming a contact hole through the insulating layer to expose the lower conductive pattern, forming a first spacer along sides of the contact hole, and then forming a contact plug in the contact hole. The contact plug is formed so as to contact the lower conductive pattern.
摘要:
A semiconductor device having a cell area and a peripheral area includes a semiconductor substrate, a cell insulating isolation region delimiting a cell active region of the semiconductor substrate in the cell area, a word line disposed within the semiconductor substrate in the cell area, a bit line contact plug disposed on the cell active region, a bit line disposed on the bit line contact plug, a peripheral insulating isolation region delimiting a peripheral active region of the semiconductor substrate in the peripheral area, and a peripheral transistor including a peripheral transistor lower electrode and a peripheral transistor upper electrode. The bit line contact plug is formed at the same level in the semiconductor device as the peripheral transistor lower electrode, and the bit line electrode is formed at the same level in the semiconductor device as the peripheral transistor upper electrode.
摘要:
A semiconductor device having a cell area and a peripheral area includes a semiconductor substrate, a cell insulating isolation region delimiting a cell active region of the semiconductor substrate in the cell area, a word line disposed within the semiconductor substrate in the cell area, a bit line contact plug disposed on the cell active region, a bit line disposed on the bit line contact plug, a peripheral insulating isolation region delimiting a peripheral active region of the semiconductor substrate in the peripheral area, and a peripheral transistor including a peripheral transistor lower electrode and a peripheral transistor upper electrode. The bit line contact plug is formed at the same level in the semiconductor device as the peripheral transistor lower electrode, and the bit line electrode is formed at the same level in the semiconductor device as the peripheral transistor upper electrode.
摘要:
A method of fabricating a semiconductor device includes forming a first contact opening having a relatively larger depth than a second contact opening to expose first and second contacts through an insulation layer, where the first and second contacts are located at different depths with respect to an upper surface of the insulation layer. Therefore, it is possible to prevent excessive over-etch of the second contact opening and minimize etching damage to the contact region exposed by the second contact opening.
摘要:
A device isolation layer is formed in a substrate to define spaced-apart linear active regions in the substrate. Buried gate patterns are formed in the substrate and extending along a first direction to cross the active regions. An etch stop layer and a first insulating layer are formed on the substrate. Bit line structures are formed on the first insulating layer and extending along a second direction transverse to the first direction to cross the active regions. A second insulating layer is formed on the bit line structures. Contact plugs are formed penetrating the second insulating layer, the first insulating layer, and the etch stop layer to contact one of the active regions between adjacent ones of the bit line structures.
摘要:
A method of fabricating a semiconductor device includes forming a first contact opening having a relatively larger depth than a second contact opening to expose first and second contacts through an insulation layer, where the first and second contacts are located at different depths with respect to an upper surface of the insulation layer. Therefore, it is possible to prevent excessive over-etch of the second contact opening and minimize etching damage to the contact region exposed by the second contact opening.
摘要:
A spacer covering a sidewall of a contact plug includes a relatively more damaged first portion and a relatively less damaged second portion. An interface of the first and second portions of the spacer is spaced apart from a metal silicide layer of the contact plug. Thus reliability of the semiconductor device may be improved. Related fabrication methods are also described.
摘要:
A spacer covering a sidewall of a contact plug includes a relatively more damaged first portion and a relatively less damaged second portion. An interface of the first and second portions of the spacer is spaced apart from a metal silicide layer of the contact plug. Thus reliability of the semiconductor device may be improved. Related fabrication methods are also described.
摘要:
A semiconductor device having a cell area and a peripheral area includes a semiconductor substrate, a cell insulating isolation region delimiting a cell active region of the semiconductor substrate in the cell area, a word line disposed within the semiconductor substrate in the cell area, a bit line contact plug disposed on the cell active region, a bit line disposed on the bit line contact plug, a peripheral insulating isolation region delimiting a peripheral active region of the semiconductor substrate in the peripheral area, and a peripheral transistor including a peripheral transistor lower electrode and a peripheral transistor upper electrode. The bit line contact plug is formed at the same level in the semiconductor device as the peripheral transistor lower electrode, and the bit line electrode is formed at the same level in the semiconductor device as the peripheral transistor upper electrode.