Title :
A Rapid Prototyping of Real-Time Pattern Generator for Step-and-Scan Lithography Using Digital Micromirror Device
Author :
Miyamoto, Naoto ; Shimakage, Masahiko ; Morimoto, Tatsuo ; Kadota, Kazuya ; Sugawa, Shigetoshi ; Ohmi, Tadahiro
Author_Institution :
Tohoku Univ., Sendai
Abstract :
An FPGA prototyping of real-time pattern generator for step-and-scan lithography equipment using digital micromirror device (DMD) is described. It supports 1 M sample/sec stage position data acquisition for high-speed and high-accuracy pattern generation. It also supports arbitrary pixel-level masking to cancel the effect of DMD manufacturing variability. We have developed the sliding window at the interface of the frame buffer in order to cancel stage fluctuation. We have also developed a fast and small data converter from binary bitmap to DMD format. This pattern generator has been successfully implemented to FPGA Stratix-II EP2S180 with max clock frequency at 123.93 MHz and max DMD frame rate at 1,202 frame/sec.
Keywords :
data acquisition; field programmable gate arrays; micromirrors; photolithography; DMD; FPGA prototyping; arbitrary pixel-level masking; cancel stage fluctuation; digital micromirror device; frame buffer; high-accuracy pattern generation; high-speed generation; rapid prototyping; real-time pattern generator; stage position data acquisition; step-and-scan lithography; Buffer storage; DRAM chips; Field programmable gate arrays; Fluctuations; High speed optical techniques; Lithography; Manufacturing; Micromechanical devices; Micromirrors; Prototypes;
Conference_Titel :
Field-Programmable Technology, 2007. ICFPT 2007. International Conference on
Conference_Location :
Kitakyushu
Print_ISBN :
978-1-4244-1472-7
Electronic_ISBN :
978-1-4244-1472-7
DOI :
10.1109/FPT.2007.4439272