Abstract: Improved, edge compensated capacitors and a method for making the same are presented. The present invention arranges individual cells of capacitors and uses passive dummy cells so as to achieve a ratio between the length of the exposed perimeters of the cells of the two capacitors that is equal to the desired capacitance ratio between the two capacitors. By doing so, the edge shrinkage effects on both cells are taken into account, and accurate capacitor ratios are maintained. In one embodiment of the invention the number of intersections between exposed edges of the cells of the two capacitors are also adjusted to conform to the capacitor ratio to achieve additional edge shrinkage compensation.

Abstract: An under-the-hub spin motor for a disk drive includes a shaft having a first portion mounted to a support member an a second portion shaft having first and second bearings provided at the first and second ends thereof. A hub is supported by the first and second bearings and a disk having an inner diameter is mounted on the hub. A stator is provided on the support member so that the stator is outside of the Z-axis region between the bearings and a rotor is provided on the hub so that the rotor is concentric with the stator and so that a gap is defined between the stator and the rotor. The gap has a radius larger than the inner diameter of the disk.