Slater & Matsil, L.L.P.
Method of manufacturing strained-silicon semiconductor device
A method for fabricating a strained-silicon semiconductor device to ameliorate undesirable variation in selectively grown epitaxial film thickness. The layout or component configuration for the proposed semiconductor device is evaluated to determine areas of relatively light or dense population in order to determine whether local-loading-effect defects are likely to occur. If a possibility of such defects occurring exists, a dummy pattern of epitaxial structures may be indicated. If so, the dummy pattern appropriate to the proposed layout is created, incorporated into the mask design, and then implemented on the substrate along with the originally-proposed component configuration.
Taiwan Semiconductor Manufacturing Company, Ltd.
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Syun-Ming Yun-Hsiu Pang-Yen
Jang Chen Tsai