Abstract:
A method for manufacturing contact plugs for semiconductor devices includes the following steps. A substrate is provided. The substrate includes a plurality of transistor and a first dielectric layer filling spaces between the transistors formed thereon. The transistors respectively include a gate and a source/drain. A patterned sacrificial layer is formed on the first dielectric layer. The patterned sacrificial layer includes a plurality of first openings corresponding to the gates of the transistors. A second dielectric layer filling up the first openings in the patterned sacrificial layer is formed and followed by removing the sacrificial layer to form a plurality of second openings in the second dielectric layer. The second openings are formed correspondingly to the sources/drains of the transistors. An etching process is performed to etch the first dielectric layer through the second openings to form a plurality of first contact holes exposing the sources/drains of the transistors.
Abstract:
A method for fabricating semiconductor device is disclosed. The method includes the steps of: providing a substrate; forming an ultra low-k (ULK) dielectric layer on the substrate; forming a hard mask on the ULK dielectric layer; forming an opening in the hard mask and the ULK dielectric layer; forming a conductive layer in the opening and on the hard mask; planarizing the conductive layer; and removing the hard mask to expose the ULK dielectric layer so that the top surface of the ULK dielectric layer is lower than the top surface of the conductive layer.
Abstract:
A method for generating a layout pattern of integrated circuit (IC) is provided. First, feature patterns are provided to a computer system and dummy pad patterns are generated in a space among the feature patterns. The layout pattern is then split into first feature patterns and second feature patterns. The dimensions of the first feature patterns are less than the dimensions of the second feature patterns. Afterwards, the dummy pad patterns are combined with the second features pattern to form a combined pattern. Then, mandrel patterns are generated in a space between the first feature patterns and the geometric patterns are generated according to the positions of the first feature patterns. Finally, the combined pattern, the mandrel patterns, and the geometric patterns are respectively outputted to form a first, a second, and a third photomasks.
Abstract:
A method for manufacturing contact plugs for semiconductor devices includes the following steps. A substrate is provided. The substrate includes a plurality of transistor and a first dielectric layer filling spaces between the transistors formed thereon. The transistors respectively include a gate and a source/drain. A patterned sacrificial layer is formed on the first dielectric layer. The patterned sacrificial layer includes a plurality of first openings corresponding to the gates of the transistors. A second dielectric layer filling up the first openings in the patterned sacrificial layer is formed and followed by removing the sacrificial layer to form a plurality of second openings in the second dielectric layer. The second openings are formed correspondingly to the sources/drains of the transistors. An etching process is performed to etch the first dielectric layer through the second openings to form a plurality of first contact holes exposing the sources/drains of the transistors.
Abstract:
A layout decomposition method and a method for manufacturing a semiconductor device applying the same are provided. According to the layout decomposition method, a design layout is received by the logic processer of a computing system. A design rule for layout decomposition is then identified by the logic processer, including identifying the loose areas (areas with loosely distributed features) and dense areas (areas with densely distributed features) on a substrate, and identifying first areas with odd-numbered features and second areas with even-numbered features on the substrate. Next, a first mask with a first pattern and a second mask with a second pattern are generated corresponding to results of design rule identification by the computing system.
Abstract:
A layout decomposition method and a method for manufacturing a semiconductor device applying the same are provided. According to the layout decomposition method, a design layout is received by the logic processer of a computing system. A design rule for layout decomposition is then identified by the logic processer, including identifying the loose areas (areas with loosely distributed features) and dense areas (areas with densely distributed features) on a substrate, and identifying first areas with odd-numbered features and second areas with even-numbered features on the substrate. Next, a first mask with a first pattern and a second mask with a second pattern are generated corresponding to results of design rule identification by the computing system.