Abstract: A semiconductor device comprises a diffusion layer in a semiconductor substrate, a gate insulation film on the semiconductor substrate, a gate electrode on the gate insulation film, an interlayer insulation film on the semiconductor substrate so as to cover the gate electrode, and a capacitor on the interlayer insulation film. The capacitor includes a laminated structure made up of a lower electrode, a dielectric film, and an upper electrode. The diffusion layers, the gate electrode, and the lower electrode are connected to one another by a common contact in the interlayer insulation film.

Abstract: A technique for making it possible to miniaturize a semiconductor device having a memory device and a logic device on one semiconductor substrate even when a self-aligned process can not be utilized, i.e., a contact hole can not be self-aligned to a gate electrode. Contact holes (15, 65) are formed in an insulating layer (19) such that the contact holes (15) are located beside gate electrodes 6 while the contact holes (65) are located beside gate electrodes (56). An insulating film 35 is formed on each side face of the contact holes (15, 65). Then, contact plugs (16) filling the contact holes (15) and contact plugs (66) filling the contact holes (65) are formed.

Abstract: 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).

Abstract: It is an object to provide a semiconductor technique for shortening a time required for manufacturing a semiconductor device of a memory and logic mixing type. Contact plugs (17) and (67) are formed in an interlayer insulating film (14) and stopper films (13) and (15) with an upper surface thereof exposed from the stopper film (15). Then, an interlayer insulating film (18) is formed on the stopper film (15) and the contact plugs (17) and (67), and an opening portion (69) for exposing the contact plug (67) is formed in the interlayer insulating film (18). By etching only the interlayer insulating film (18) without etching the stopper film (15), the opening portion (69) can be formed. Consequently, it is possible to shorten a time required for forming the opening portion (69).

Abstract: 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.

Abstract: 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.

Abstract: 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.