Patent ID: 8354207
Filing Date: 2013-01-15
Classification: B82Y,G03F,G06F,H01J,Y10S

Abstract:
1. A method for manufacturing a stencil for charged particle beam lithography, the stencil to be used to form a plurality of circular or nearly-circular patterns of various sizes on a surface, the method comprising the steps of: determining a first circular or nearly-circular character having a first diameter, wherein the first circular or nearly-circular character is capable of forming patterns in a first range of sizes on the surface by using different dosages; determining a second circular or nearly-circular character having a second diameter which is larger than the first diameter, wherein the second circular or nearly-circular character is capable of forming patterns in a second range of sizes on the surface by using different dosages, and wherein the largest pattern that is capable of being formed with the first circular or nearly-circular character is at least as large as the smallest pattern that is capable of being formed with the second circular or nearly-circular character; and fabricating a stencil containing the first circular or nearly-circular character and the second circular or nearly-circular character.