Abstract: A method for reducing ESD on scattering bars in forming a mask containing a target pattern is provided. In one embodiment, the target pattern comprising features to be imaged onto a substrate is obtained. The mask is modified to include at least one scattering bar, the at least one scattering bar being placed adjacent edges of the features to be imaged. Thereafter, the scattering bar is truncated into one or more scattering bar segments by determining an optimized length for each of the one or more scattering bar segments, wherein ESD on the one or more scattering bar segments is substantially reduced.

Abstract: A pull retainer emergency safety switch includes a plastic housing and a switch module, wherein, the plastic housing has a push block device and a pull retainer piece has a ring retainer. The ring retainer abuts on a rotating handle configured in an upper portion of the push block device, and causes an underside of the rotating handle to abut on a triangular push block, and a bottom surface of the triangular push block is utilized to abut on a top surface of another triangular push block, thereby enabling a side surface of the second triangular push block to abut upon a push button of the switch module. When pulling on the pull retainer pieces the rotating handle with an anticlockwise rotating force produced that actuates the triangular push block and enables a horizontal displacement thereby pressing the switch module to actualize rapid cutting off of power supply.