Patent ID: 11875825
Assignee: HEADWAY TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A perpendicular magnetic recording (PMR) writer comprising:
a main pole including a tip portion disposed adjacent to an air bearing surface (ABS);
a driving coil electrically connected to the main pole, the driving coil forming a primary electric current path with a bucking coil for passing a writing current, wherein the main pole is driven to generate the magnetic flux that passes through the tip portion and is used to write one or more magnetic bits in a magnetic medium;
a write shield electrically connected to the tip portion of the main pole; and
at least two contact vias with under paths configured to generate a parallel path to the driving coil, wherein the main pole and the write shield are electrically connected through one or two series resistors, forming a second writing current path to generate a magnetic flux that passes through the tip portion of the main pole and bias the tip portion electrically with the writing current to improve writing quality of the main pole.