Chemical mechanical polishing pad and methods of making and using same
First Claim
Patent Images
1. A shape memory chemical mechanical polishing pad for polishing a substrate selected from at least one of a magnetic substrate, an optical substrate and a semiconductor substrate;
- comprising;
a polishing layer set in a densified state;
wherein the polishing layer comprises a shape memory matrix material transformable between an original shape and a programmed shape;
wherein the polishing layer exhibits an original thickness, OT, when the shape memory matrix material is in its original shape;
wherein the polishing layer exhibits a densified thickness, DT, in the densified state when the shape memory matrix material is fixed in the programmed shape;
wherein the DT is ≦
80% of the OT; and
,wherein the polishing layer has a polishing surface adapted for polishing the substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
Shape memory chemical mechanical polishing pads are provided, wherein the shape memory chemical mechanical polishing pads comprise a polishing layer in a densified state. Also provided are methods of making the shape memory chemical mechanical polishing pads and for using them to polish substrates.
25 Citations
11 Claims
-
1. A shape memory chemical mechanical polishing pad for polishing a substrate selected from at least one of a magnetic substrate, an optical substrate and a semiconductor substrate;
- comprising;
a polishing layer set in a densified state; wherein the polishing layer comprises a shape memory matrix material transformable between an original shape and a programmed shape; wherein the polishing layer exhibits an original thickness, OT, when the shape memory matrix material is in its original shape; wherein the polishing layer exhibits a densified thickness, DT, in the densified state when the shape memory matrix material is fixed in the programmed shape; wherein the DT is ≦
80% of the OT; and
,wherein the polishing layer has a polishing surface adapted for polishing the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- comprising;
-
8. A method for producing a shape memory chemical mechanical polishing pad, comprising:
-
providing a shape memory matrix material transformable between an original shape and a programmed shape; preparing a polishing layer in an original state exhibiting an original thickness, OT, comprising the shape memory matrix material in the original shape; subjecting the polishing layer to an external force; setting the shape memory matrix material to the programmed shape to provide the polishing layer in a densified state, wherein the polishing layer exhibits a densified thickness, DT; removing the external force; wherein the DT is ≦
80% of the OT; and
,wherein the polishing layer has a polishing surface adapted for polishing a substrate selected from at least one of a magnetic substrate, an optical substrate and a semiconductor substrate. - View Dependent Claims (9)
-
-
10. A method of polishing a substrate, comprising:
-
providing a substrate selected from at least one of a magnetic substrate, an optical substrate and a semiconductor substrate; providing a shape memory chemical mechanical polishing pad, wherein the polishing pad comprises a polishing layer in a densified state, wherein the polishing layer comprises a shape memory matrix material transformable from an original shape and a programmed shape;
wherein the polishing layer in its original state exhibits an original thickness, OT, when the shape memory matrix material is in the original shape;
wherein the polishing layer exhibits a densified thickness, DT, in the densified state when the shape memory matrix material is in the programmed shape; and
wherein the DT is ≦
80% of the OT; and
,creating dynamic contact between a polishing surface of the polishing layer and the substrate to polish a surface of the substrate. - View Dependent Claims (11)
-
Specification