A polishing article has a polishing surface and an aperture, the aperture including a first section and a second section. The polishing article includes a projection extending inwardly into the aperture. The polishing article includes a lower portion on a side of the first surface farther from the polishing surface. A window has a first portion positioned in the first section of the aperture and a second portion extending into the second section of the aperture. The window has a second surface substantially parallel to the polishing surface. A first adhesive adheres the first surface of the projection to the second surface of the window to secure the window to the projection and a second adhesive of different material composition than the first adhesive. The second adhesive is positioned laterally between the second portion of the window and the lower portion of the polishing article.

Provided is a polishing unit that can reduce penetration of a polishing slurry into a base material layer and that can prevent impairment in polishing performance. A polishing unit (10a) in accordance with a first aspect of the present invention includes: a polishing pad (100a) that includes a polishing layer (101) and a base material layer (103); and a surface plate (150), the base material layer (103) having a diameter smaller than a diameter of the polishing layer (101) and greater than a diameter of the surface plate (150).

Provided is a polishing unit that can reduce penetration of a polishing slurry into a base material layer and that can prevent impairment in polishing performance. A polishing unit (10a) in accordance with a first aspect of the present invention includes: a polishing pad (100a) that includes a polishing layer (101) and a base material layer (103); and a surface plate (150), the base material layer (103) having a diameter smaller than a diameter of the polishing layer (101) and greater than a diameter of the surface plate (150).

A polishing pad useful in chemical mechanical polishing can comprise a base pad having a top surface and surface, a plurality of polishing elements each having a top polishing surface and a bottom surface, and wherein each of the plurality of polishing elements is connected to the top surface of the base pad to the polishing element by three or more supports wherein the bottom surface of the polishing element, the top surface of the base pad and the supports define a region comprising at least one void and there are openings between the three or more supports. Such pad can be used in a method by providing a substrate and polishing the substrate with the pad, optionally, with a polishing medium.

A polishing pad useful in chemical mechanical polishing can comprise a base pad having a top surface and surface, a plurality of polishing elements each having a top polishing surface and a bottom surface, and wherein each of the plurality of polishing elements is connected to the top surface of the base pad to the polishing element by three or more supports wherein the bottom surface of the polishing element, the top surface of the base pad and the supports define a region comprising at least one void and there are openings between the three or more supports. Such pad can be used in a method by providing a substrate and polishing the substrate with the pad, optionally, with a polishing medium.

A polishing pad for CMP is provided. The polishing pad includes a layer of material having a surface, a plurality of grooves indented into the surface in the layer of material, and a fluorescent indicator in the layer of material. Each of the plurality of grooves has a first depth, the fluorescent indicator has a second depth, and the second depth is equal to or less than the first depth.

A polishing pad for CMP is provided. The polishing pad includes a layer of material having a surface, a plurality of grooves indented into the surface in the layer of material, and a fluorescent indicator in the layer of material. Each of the plurality of grooves has a first depth, the fluorescent indicator has a second depth, and the second depth is equal to or less than the first depth.

The present disclosure relates to a chemical mechanical planarization pad and a method of making and using a chemical mechanical planarization pad. The chemical mechanical planarization pad may include a first component including a water soluble composition and water insoluble composition exhibiting a solubility in water of less than that of the water soluble composition, wherein at least one of the water soluble and water insoluble compositions of the first component is formed of fibers. The chemical mechanical planarization pad may also include a second component, wherein the first component is present as a discrete phase in a continuous of the second component.

The present disclosure relates to a chemical mechanical planarization pad and a method of making and using a chemical mechanical planarization pad. The chemical mechanical planarization pad may include a first component including a water soluble composition and water insoluble composition exhibiting a solubility in water of less than that of the water soluble composition, wherein at least one of the water soluble and water insoluble compositions of the first component is formed of fibers. The chemical mechanical planarization pad may also include a second component, wherein the first component is present as a discrete phase in a continuous of the second component.

A base layer, a polishing pad with a base layer and a polishing method are provided. The polishing pad includes a polishing layer and a base layer. The base layer, underlaid below the polishing layer, is a three-dimensional fabric. The three-dimensional fabric comprises a top woven layer, a bottom woven layer, and a supporting woven layer disposed between the top woven layer and the bottom woven layer. The top woven layer and the bottom woven layer are respectively woven by a plurality of first set of yarns and a plurality of second set of yarns. The supporting woven layer comprises a plurality of supporting yarns interconnecting the top woven layer and the bottom woven layer, so that a space exists between the top woven layer and the bottom woven layer.