Double-sided electrodynamic screen films

A transparent electrode film for in-plane electric field generation, comprising:

• a transparent substrate of dielectric material having first and second surfaces;
• a first electrode pattern disposed on the first surface of the transparent substrate including a first set of parallel conductive electrodes, wherein each of the conductive electrodes in the first set of parallel conductive electrodes are connected to a first bus;
• a second electrode pattern disposed on the first surface of the transparent substrate including a second set of parallel conductive electrodes, wherein each of the conductive electrodes in the second set of parallel conductive electrodes are connected to a second bus, wherein elements of the first electrode pattern do not cross over the second bus and elements of the second electrode pattern do not cross over the first bus, wherein the first bus and the second bus are located on opposite sides of the first surface, and the first set of parallel conductive electrodes and the second set of parallel conductive electrodes are arranged in an interlaced pattern on said first surface;
• a third electrode pattern disposed on the second surface of the transparent substrate including a third set of parallel conductive electrodes, wherein each of the conductive electrodes in the third set of parallel conductive electrodes are connected to a third bus, and wherein elements of the third electrode pattern cross elements of the first electrode pattern or second electrode pattern;
• wherein the conductive electrodes in the first, second and third sets of parallel conductive electrodes are all parallel to each other;
• wherein the first, second and third sets of parallel conductive electrodes are arranged in a further interlaced pattern such that the interlaced conductive electrodes in the further interlaced pattern form a repeating sequence on the first and second surfaces of the transparent substrate in an active area of the transparent electrode film;
• wherein the first, second and third buses are configured to be connected to respective sources of electrical power supplying respective waveforms, such that the supplied waveforms generate a time-varying in-plane electric field pattern above a surface of the electrode film, and wherein the transparent substrate protects the elements of third electrode pattern from shorting to the first electrode pattern or second electrode pattern;
• wherein each of the conductive electrodes has an average electrode transparency of at least 33% and include a pattern of open areas and a plurality of rails interconnected by a pattern of rungs, and wherein the plurality of rails include at least a pair of parallel edge rails that define edges of each of the conductive electrodes;
• and
• wherein the active area of the transparent electrode film has an average transparency relative to the substrate of at least 20% more than the average electrode transparency.

An electrode film for in-plane electric field generation, comprising:

• a transparent substrate of dielectric material having first and second surfaces, wherein the second surface of the transparent substrate is parallel to the first surface of the transparent substrate and the transparent substrate is a polymeric film or a glass film;
• a plurality of electrode patterns, each electrode pattern including a corresponding set of parallel conductive electrodes, wherein each of the conductive electrodes in a particular electrode pattern are connected to a corresponding bus;
• wherein at least two of the electrode patterns are supported on the first surface of the transparent substrate and at least one of the electrode patterns is supported on the second surface of the transparent substrate;
• wherein the conductive electrodes in the plurality of electrode patterns are all parallel to each other;
• wherein the sets of parallel conductive electrodes in the plurality of electrode patterns are arranged in an interlaced pattern such that the interlaced conductive electrodes form a repeating sequence;
• wherein the connected buses associated with the electrode patterns supported on the first surface of the transparent substrate are located on opposite sides of the first surface of the transparent substrate and the buses associated with each of the plurality of electrode patterns are configured to be connected to respective sources of electrical power supplying respective waveforms, such that the supplied waveforms generate a time-varying in-plane electric field pattern above a surface of the electrode film, and wherein the transparent substrate protects elements of the at least one of the electrode patterns supported on the second surface of the transparent substrate from shorting to the at least one of the electrode patterns supported on the first surface of the transparent substrate;
• and
• wherein each of the conductive electrodes include a pattern of open areas and a plurality of rails interconnected by a pattern of rungs, and wherein the plurality of rails include at least a pair of parallel edge rails that define edges of each of the conductive electrodes.