Patent ID: 8084749
Filing Date: 2011-12-27
Classification: H01J

Abstract:
1. An electrode ( 11 ) for influencing ion motion in mass spectrometers ( 26 , 40 , 48 ), the electrode having a dielectric substrate ( 12 ) and a conducting layer ( 13 ) on portions of the substrate ( 12 ), wherein peripheral borders, edges ( 20 ) or convex shapes of the conducting layer ( 13 ) adjoin free regions of the substrate ( 12 ), the electrode comprising a dielectric layer ( 14 ) on transitions from the conducting layer ( 13 ) to the adjoining free regions of the substrate ( 12 ) wherein at least one of the peripheral borders, edges ( 20 ) or convex shapes of the conducting layer ( 13 ) are covered by the dielectric layer ( 14 ).