Patent ID: 11858089
Assignee: IV TECHNOLOGIES CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A polishing layer having a surface pattern, wherein a cross section of the surface pattern along a direction has a plurality of grooves and a plurality of polishing portions, the direction includes a first direction parallel to an X-axis direction, a second direction parallel to a Y-axis direction, a third direction at an angle with the X-axis direction, a radius direction or a circumferential direction, and each of the grooves is disposed between every two adjacent polishing portions, wherein the polishing layer comprises:
a body layer, wherein the body layer comprises at least one flattened region; and
a surface layer disposed on a surface of the body layer, wherein the surface layer exposes the at least one flattened region of the body layer, wherein the polishing layer has a perfusion flow mark, and the at least one flattened region is located at an end of the perfusion flow mark.