摘要:
Provided are methods of forming patterns of wafers using self-aligned double patterning processes. The methods include preparing an initial layout having a first design pattern, a second design pattern, and a third design pattern disposed between the first design pattern and the second design pattern, extracting a first sub-layout including the first design pattern and a second sub-layout including the second design pattern from the initial layout using a computer, forming a first modified sub-layout including a first modified design pattern obtained by modifying the first design pattern of the first sub-layout using the computer, generating a modified layout including the first modified sub-layout and the second sub-layout using the computer, and performing a double patterning process using the modified layout.
摘要:
A method of forming a layout of a photomask includes receiving a layout of a mask pattern, obtaining image parameters of a two-dimensional (2D) layout mask from a simulation, obtaining image parameters of a three-dimensional (3D) layout mask from a simulation, and obtaining differences between the image parameters of the 2D and 3D masks. The differences between the image parameters of the 2D and 3D masks can be compensated by convolving a probability function with respect to an open area, represented by a visible kernel function, with a mask function to produce a first function, convolving a probability function with respect to a blocked area, represented by a visible kernel function, with the mask function to produce a second function, and summing the first function and the second function to produce a compensated vector. The layout of the mask pattern can be corrected using the compensated vector.
摘要:
A block management method for OPC model calibration includes calculating differences in several different optical functions between first patterns of a first mask and patterns of a second mask corresponding to the first patterns but differing therefrom by a predetermined bias, selecting one or more of the optical functions based on the calculated differences, clustering data of variations in the values of the calculated differences in the selected ones of the optical functions, selecting respective ones of the first patterns in consideration of how the data clusters, and designating the selected first patterns as test patterns.
摘要:
A method of manufacturing a semiconductor device includes dividing a design pattern layout into a repetitive pattern part and a non-repetitive pattern part, obtaining an optical proximity correction (OPC) bias from an extracted portion, the extracted portion being a partial portion of the repetitive pattern part, applying the OPC bias obtained from the extracted portion equally to the extracted portion and other portions of the repetitive pattern part so as to form a first corrected layout in which corrected layouts of the other portions are the same as that of the extracted portion, and forming a photomask in all portions of the repetitive pattern part according to the first corrected layout.
摘要:
Provided are methods of forming patterns of wafers using self-aligned double patterning processes. The methods include preparing an initial layout having a first design pattern, a second design pattern, and a third design pattern disposed between the first design pattern and the second design pattern, extracting a first sub-layout including the first design pattern and a second sub-layout including the second design pattern from the initial layout using a computer, forming a first modified sub-layout including a first modified design pattern obtained by modifying the first design pattern of the first sub-layout using the computer, generating a modified layout including the first modified sub-layout and the second sub-layout using the computer, and performing a double patterning process using the modified layout.
摘要:
A block management method for OPC model calibration includes calculating differences in several different optical functions between first patterns of a first mask and patterns of a second mask corresponding to the first patterns but differing therefrom by a predetermined bias, selecting one or more of the optical functions based on the calculated differences, clustering data of variations in the values of the calculated differences in the selected ones of the optical functions, selecting respective ones of the first patterns in consideration of how the data clusters, and designating the selected first patterns as test patterns.
摘要:
A method of forming a layout of a photomask using optical proximity correction (OPC) includes: receiving a layout of a mask pattern; obtaining image parameters of a two-dimensional (2D) layout mask from a simulation; obtaining image parameters of a three-dimensional (3D) layout mask from a simulation; obtaining differences between the image parameters of the 2D and 3D masks; and performing optical proximity correction (OPC) on the 2D mask to compensate for the differences between the image parameters of the 2D and 3D masks by using a visible kernel with respect to the 2D mask.
摘要:
A method of manufacturing a semiconductor device includes dividing a design pattern layout into a repetitive pattern part and a non-repetitive pattern part, obtaining an optical proximity correction (OPC) bias from an extracted portion, the extracted portion being a partial portion of the repetitive pattern part, applying the OPC bias obtained from the extracted portion equally to the extracted portion and other portions of the repetitive pattern part so as to form a first corrected layout in which corrected layouts of the other portions are the same as that of the extracted portion, and forming a photomask in all portions of the repetitive pattern part according to the first corrected layout.