Interconnected-multi-element-lattice polishing pad
View Patent ↗The polishing pad ( 104 ) is useful for polishing at least one of magnetic, optical and semiconductor substrates ( 112 ) in the presence of a polishing medium ( 120 ). The polishing pad ( 104 ) includes a plurality of polishing elements ( 402, 502, 602, 702 ). The polishing elements ( 402, 502, 602, 702 ) are aligned in a vertical direction and having a first and a second end. A plurality of junctions ( 404, 510, 610, 710 ) connects the first and second ends of the polishing elements ( 402, 502, 602, 702 ) with at least three polishing elements at each of the plurality of junctions ( 404, 510, 610, 710 ) for forming a tier. Each tier representing a thickness in the vertical direction between the first and second ends of the polishing elements ( 402, 502, 602, 702 ). And an interconnected lattice structure ( 400, 600 ) forms from connecting sequential tiers of the plurality of junctions ( 404, 504 ) that connect the polishing elements ( 402, 502, 602, 702 ).
1. A polishing pad useful for polishing at least one of a magnetic, optical and semiconductor substrate in the presence of a polishing medium, the polishing pad comprising:
a) a plurality of polishing elements, the polishing elements being aligned in a vertical direction and having a first and a second end;
b) a plurality of junctions connecting the first and second ends of the polishing elements with at least three polishing elements at each of the plurality of junctions and forming a tier, each tier representing a thickness in the vertical direction between the first and second ends of the polishing elements; and
c) an interconnected lattice structure formed from connecting sequential tiers of the plurality of junctions that connect the polishing elements.
2. The polishing pad according to claim 1 , wherein the junctions connect three to six polishing elements.
3. The polishing pad according to claim 1 , wherein polishing elements align with polishing elements above and below each junction.
4. The polishing pad according to claim 1 , wherein each polishing elements includes a series of landings.
5. The polishing pad according to claim 1 , wherein the interconnected lattice lacks horizontal polishing elements.
6. A polishing pad useful for polishing at least one of a magnetic, optical and semiconductor substrate in the presence of a polishing medium, the polishing pad comprising:
a) a plurality of polishing elements, the polishing elements being aligned in a vertical direction and having a first and a second end;
b) a plurality of junctions connecting the first and second ends of the polishing elements with at least three polishing elements at each of the plurality of junctions and forming a tier, each tier representing a thickness in the vertical direction between the first and second ends of the polishing elements; and
c) an interconnected lattice structure formed from connecting sequential tiers of the plurality of junctions that connect the polishing elements with the polishing elements aligning in a constant direction through multiple junctions.
7. The polishing pad according to claim 6 , wherein the junctions connect three to six polishing elements.
8. The polishing pad according to claim 6 , wherein the junctions connect three polishing elements.
9. The polishing pad according to claim 6 , wherein each polishing element includes a series of landings.
10. The polishing pad according to claim 6 , wherein the interconnected lattice lacks horizontal polishing elements.