摘要:
A contact hole having an opening diameter smaller than the minimum dimension that can be formed by photolithographic technique is formed. Using an interlayer insulating film 8 formed on a semiconductor substrate as an etching mask, etching is carried out halfway to form an opening 8a. The etching mask is removed, and a TEOS film 10 is formed on the interlayer oxide film 8. The whole surface is then etched anisotropically to form a contact hole 11.
摘要:
A contact hole having an opening diameter smaller than the minimum dimension that can be formed by photolithographic technique is formed. Using an interlayer insulating film 8 formed on a semiconductor substrate as an etching mask, etching is carried out halfway to form an opening 8a. The etching mask is removed, and a TEOS film 10 is formed on the interlayer oxide film 8. The whole surface is then etched anisotropically to form a contact hole 11.
摘要:
According to one embodiment of the present invention, a method of manufacturing a semiconductor device includes below steps. A step of preparing a phase shift mask and a normal photomask. A step of stacking a first wiring layer on a semiconductor substrate, and further stacking, on the first wiring layer, a second wiring layer. The second wiring layer includes a second wiring and third wiring. A step of stacking an interlayer insulating film on the second wiring layer. A step of forming, in the interlayer insulating film, a first opening in which the second wiring is exposed, and a second opening in which the third wiring is exposed by photolithography using the normal photomask. A step of burying a metal in the first opening and the second opening. A step of providing a pad to be overlaid on the first and second openings.
摘要:
A technique for enhancing the performance of a memory- and logic-equipped semiconductor device is provided. The semiconductor device comprises a semiconductor substrate (1), an insulating layer (19) on the semiconductor substrate (1), a plurality of contact plugs (16, 66) in the insulating layer (19), and an insulating layer (30) where capacitors (82), a plurality of contact plugs (25, 75), barrier metal layers (27, 87) and copper interconnections (29, 88) are formed. Source/drain regions (9) in the upper surface of the semiconductor substrate (1) are electrically connected to the copper interconnections (29). One of adjacent source/drain regions (59) in the upper surface of the semiconductor substrate (1) is electrically connected to the copper interconnection (88), while the other is electrically connected to the capacitor (82).
摘要:
According to one embodiment of the present invention, a method of manufacturing a semiconductor device includes below steps.A step of preparing a phase shift mask and a normal photomask.A step of stacking a first wiring layer on a semiconductor substrate, and further stacking, on the first wiring layer, a second wiring layer. The a second wiring layer includes a second wiring and a third wiring.A step of stacking an interlayer insulating film on the second wiring layer.A step of forming, in the interlayer insulating film, a first opening in which the second wiring is exposed, and a second opening in which the third wiring is exposed by photolithography using the normal photomask.A step of burying a metal in the first opening and the second opening.A step of providing a pad to be overlaid on the first and second openings.
摘要:
A semiconductor substrate is arranged to have a DRAM area in which to form at a high density gate electrodes of transistors serving as DRAM components, and a peripheral circuit area in which to form at a relatively low density gate electrodes of transistors as peripheral circuit components. A resist film is formed in corresponding relation to the gate electrodes of the DRAM. After an insulating film is etched, a resist film is formed in corresponding relation to the gate electrodes of the peripheral circuits. A conductive layer is then etched while the resist film and insulating film left in the DRAM area are being used as masks, whereby the gate electrodes are formed in the DRAM area and peripheral circuit area.
摘要:
A technique for enhancing the performance of a memory- and logic-equipped semiconductor device is provided. The semiconductor device comprises a semiconductor substrate (1), an insulating layer (19) on the semiconductor substrate (1), a plurality of contact plugs (16, 66) in the insulating layer (19), and an insulating layer (30) where capacitors (82), a plurality of contact plugs (25, 75), barrier metal layers (27, 87) and copper interconnections (29, 88) are formed. Source/drain regions (9) in the upper surface of the semiconductor substrate (1) are electrically connected to the copper interconnections (29). One of adjacent source/drain regions (59) in the upper surface of the semiconductor substrate (1) is electrically connected to the copper interconnection (88), while the other is electrically connected to the capacitor (82).
摘要:
According to one embodiment of the present invention, a method of manufacturing a semiconductor device includes below steps.A step of preparing a phase shift mask and a normal photomask.A step of stacking a first wiring layer on a semiconductor substrate, and further stacking, on the first wiring layer, a second wiring layer. The a second wiring layer includes a second wiring and a third wiring.A step of stacking an interlayer insulating film on the second wiring layer.A step of forming, in the interlayer insulating film, a first opening in which the second wiring is exposed, and a second opening in which the third wiring is exposed by photolithography using the normal photomask.A step of burying a metal in the first opening and the second opening.A step of providing a pad to be overlaid on the first and second openings.
摘要:
According to one embodiment of the present invention, a method of manufacturing a semiconductor device includes below steps.A step of preparing a phase shift mask and a normal photomask.A step of stacking a first wiring layer on a semiconductor substrate, and further stacking, on the first wiring layer, a second wiring layer. The a second wiring layer includes a second wiring and a third wiring.A step of stacking an interlayer insulating film on the second wiring layer.A step of forming, in the interlayer insulating film, a first opening in which the second wiring is exposed, and a second opening in which the third wiring is exposed by photolithography using the normal photomask.A step of burying a metal in the first opening and the second opening.A step of providing a pad to be overlaid on the first and second openings.
摘要:
A technique for enhancing the performance of a memory- and logic-equipped semiconductor device is provided. The semiconductor device comprises a semiconductor substrate (1), an insulating layer (19) on the semiconductor substrate (1), a plurality of contact plugs (16, 66) in the insulating layer (19), and an insulating layer (30) where capacitors (82), a plurality of contact plugs (25, 75), barrier metal layers (27, 87) and copper interconnections (29, 88) are formed. Source/drain regions (9) in the upper surface of the semiconductor substrate (1) are electrically connected to the copper interconnections (29). One of adjacent source/drain regions (59) in the upper surface of the semiconductor substrate (1) is electrically connected to the copper interconnection (88), while the other is electrically connected to the capacitor (82).