发明名称 METHOD OF DEFECT INSPECTION AND DEVICE OF DEFECT INSPECTION
摘要 A method of inspecting defects and a device inspecting defects of detecting defects at high sensitivity and high capture efficiency even on various patterns existing on a wafer. In the device of inspecting defects, an illumination optical system is formed of two systems of a coherent illumination of a laser 5 and an incoherent illumination of LEDs 6a, 6b, 6c and 6d, and light paths are divided in a detecting system corresponding to respective illumination light, spatial modulation elements 55a and 55b are arranged to detecting light paths, respectively, scattered light inhibiting sensitivity is shielded by the spatial modulating elements 55a and 55b, scattered light transmitted through the spatial modulation elements 55a and 55b is detected by image sensors 90a and 90b arranged to respective light paths, and images detected by these two image sensors 90a and 90b are subjected to a comparison processing, thereby determining a defect candidate.
申请公布号 US2012092657(A1) 申请公布日期 2012.04.19
申请号 US201013265935 申请日期 2010.04.22
申请人 SHIBATA YUKIHIRO;NAKATA TOSHIHIKO;UENO TAKETO;TANIGUCHI ATSUSHI;HONDA TOSHIFUMI;HITACHI HIGH-TECHNOLOGIES CORPORATION 发明人 SHIBATA YUKIHIRO;NAKATA TOSHIHIKO;UENO TAKETO;TANIGUCHI ATSUSHI;HONDA TOSHIFUMI
分类号 G01N21/88 主分类号 G01N21/88
代理机构 代理人
主权项
地址