亚像素渲染
扫描仪
像素
位图
计算机科学
数字微镜装置
计算机视觉
空间光调制器
人工智能
投影(关系代数)
图像分辨率
结构光三维扫描仪
点间距
光栅图形
计算机图形学(图像)
光学
物理
算法
作者
Yuho Kanaya,Yoji Watanabe,Toshiaki Sakamoto,Yasushi Mizuno,Ryota Matsui,Yosuke Okudaira,Shunsuke Kibayashi,Koshi Komuro,Hiroyuki Tsukamoto,Kazuo Masaki,Soichi Owa,Thomas Myeongseok Koo,D. Y. Tseng,Conrad Sorensen,Sujuan Li,Michael Tan,Bryant Lin,Stephen P. Renwick,Noriyuki Hirayanagi,Bausan Yuan
摘要
Nikon has been developing the Digital Scanner, an optical maskless exposure tool with a DUV light source. The Digital Scanner uses a spatial light modulator and rasterized pattern data, instead of glass photomasks, to project an optical image. The modulator is a micromirror array and each micromirror takes one of two possible states, so the pattern data are essentially equivalent to a one bit per pixel bitmap image. In spite of the one-bit depth input similar to a black-and-white bitmap, the Digital Scanner can control projected patterns in subpixel resolution because the pixel size is chosen to be smaller than the resolution of the projection optics. Besides the projection hardware, we have also developed special pattern data preparation system for the Digital Scanner in order to realize the subpixel controllability. Polygons from GDSII or OASIS files are rasterized by dedicated pixel-based algorithms so that the optical image of the resulting pixel data becomes equivalent to that of input polygons. Another pattern data converter with optical proximity correction (OPC) capability is also being developed and available for large area conversion. We explain the exposure system of the Digital Scanner and report the progress of the pixel-based data preparation system including recent demonstration printing results of exposure data generated by the new converter that has OPC capability.
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