CMP pad construction with composite material properties using additive manufacturing processes
First Claim
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1. A polishing pad, comprising:
- a composite polishing pad body comprising;
one or more first features formed from a first material, wherein the first material comprises a first material composition formed by depositing droplets of a second material and a third material within a plurality of layers that form at least a portion of each of the one or more first features; and
a base material layer formed from a fourth material, wherein the fourth material comprises a second material composition formed by depositing droplets of a fifth material and a sixth material within a plurality of layers that form at least a portion of the base material layer,wherein the one or more first features extend from the base material layer, and a surface of each of the one or more first features form a polishing surface of the composite polishing pad body.
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Abstract
Embodiments of the disclosure generally provide polishing pads includes a composite pad body and methods for forming the polishing pads. One embodiment provides a polishing pad including a composite pad body. The composite pad body includes one or more first features formed from a first material or a first composition of materials, and one or more second features formed from a second material or a second composition of materials, wherein the one or more first features and the one or more second features are formed by depositing a plurality of layers comprising the first material or first composition of materials and second material or second composition of materials.
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Citations
20 Claims
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1. A polishing pad, comprising:
a composite polishing pad body comprising; one or more first features formed from a first material, wherein the first material comprises a first material composition formed by depositing droplets of a second material and a third material within a plurality of layers that form at least a portion of each of the one or more first features; and a base material layer formed from a fourth material, wherein the fourth material comprises a second material composition formed by depositing droplets of a fifth material and a sixth material within a plurality of layers that form at least a portion of the base material layer, wherein the one or more first features extend from the base material layer, and a surface of each of the one or more first features form a polishing surface of the composite polishing pad body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A polishing pad, comprising:
a composite polishing pad body comprising; one or more first features formed from a first material, wherein a surface of the one or more first features form a polishing surface, the first material has a first hardness, and the first material comprises a first polymer material and a second polymer material; and a base material layer formed from a second material, wherein the second material has a second hardness that is less than the first hardness, and the second material comprises the first polymer material and a third polymer material, wherein the one or more first features extend from the base material layer, and wherein a concentration of the first polymer material in the first material is greater than the concentration of the first polymer material in the second material. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
Specification