Patent ID: 6365303
Filing Date: 2002-04-02
Classification: G03F,H01L

Abstract:
A mask, comprising:a transparent mask substrate having a pattern region, a first border region surrounding said pattern region, a second border region surrounding said first border region, and a third border region surrounding said second border region; a layer of conducting metal formed on the entire said first border region of said transparent mask substrate; a layer of said conducting metal formed on the entire said third border region of said transparent mask substrate; a first number of first conducting fingers formed of said conducting metal on said second border region of said transparent mask substrate, wherein each of said first conducting fingers has a first width, a first end in electrical contact with said conducting metal formed on said first border region of said transparent mask substrate, and a second end a first distance away from said conducting metal formed on said third border region of said transparent mask substrate; and a second number of second conducting fingers formed of said conducting metal on said second border region of said substrate, wherein each of said second conducting fingers has a second width, a first end in electrical contact with said conducting metal formed on said third border region of said transparent mask substrate, a second end a second distance away from said conducting metal formed on said first border region of said transparent mask substrate, and each of said second conducting fingers is disposed parallel to and adjacent to one of said first conducting fingers.