Patent ID: 9737971
Date: 2017-08-22
CPC Classifications: B24B

Claim:
1. A chemical mechanical polishing pad, polishing layer analyzer, comprising: a magazine for holding a plurality of polymeric sheets, wherein each polymeric sheet (i) comprises: a polymer microelement composite, comprising: a polymer and a plurality of microelements, wherein the plurality of microelements are dispersed in the polymer; and, (ii) has a thickness, T a sequencer; a light source, wherein the light source emits a beam having a luminescence spectrum exhibiting an emission peak wavelength of 460 to 490 nm and a full width at half max, FWHM, of ≦50 nm; a light detector; a digital image data acquisition device coupled to the light detector; and, an image data processing unit coupled to the digital image data acquisition device; wherein the sequencer is configured to extract from the magazine and convey the plurality of polymeric sheets, one polymeric sheet at a time, to a position interposed between the light source and the light detector; wherein the beam emitted from the light source is oriented to impinge on the impinging surface; and, wherein the light detector is oriented to detect a transmitted light from the beam that is transmitted through the thickness, T