Suspension assembly including a flexure tail with staggered rows of apertures

A head gimbal assembly (HGA) comprising:

• a head;
• and
• a suspension assembly comprising:
• a load beam;
• a laminated flexure attached to the load beam, the laminated flexure including:
• a flexure tongue attached to the head;
• and
• a flexure tail defining a long axis and a width direction that is normal to the long axis, the flexure tail including:
• a structural layer;
• a dielectric layer overlying the structural layer;
• a plurality of conductive traces overlying the dielectric layer, the plurality of conductive traces including at least a first trace and a second trace;
• a first plurality of apertures in the structural layer, each of the first plurality of apertures underlying the first trace but not the second trace, at least one of the first plurality of apertures being shaped as a non-rectangular parallelogram;
• and
• a second plurality of apertures in the structural layer, each of the second plurality of apertures underlying the second trace but not the first trace;
• wherein each of the first plurality of apertures includes a corresponding region of maximum width, as measured in the width direction, and each of the second plurality of apertures includes a corresponding region of maximum width, as measured in the width direction, and none of the corresponding regions of maximum width of the first plurality of apertures is disposed in an overlapping position along the long axis as any of the corresponding regions of maximum width of the second plurality of apertures;
• and
• wherein each of the corresponding regions of maximum width of the first plurality of apertures, is disposed at least 10 microns measured along the long axis from any of the corresponding regions of maximum width of the second plurality of apertures.