The solution of the semiconductor layout optimization and aspect ratio optimization provided on this site is described in the patent gazettes (Japanese Patent Laid-Open No. 2003-57843, Patent No. 4298571, WO2018-216091). If you are interested in the details of the solution, please see them. However, patent gazettes contain a lot of mathematical formulas, so they are not easy to read. Therefore, here we will explain the points of interest and the key points of the solution method to find the optimal solution. By doing so, you will understand the strengths and weaknesses of this solution.