Next generation warpage measurement system

Systems, apparatuses and methods for determining a surface profile of a substrate are provided. In one embodiment, a method includes projecting a signal having a vertical component/profile across the surface of the substrate from a plurality of locations along a first side of the substrate, capturin...

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Bibliographische Detailangaben
Hauptverfasser: ELUMALAI, KARTHIK, PEH, ENG SHENG, RAJAPAKSA, DIMANTHA, SU, JUN-LIANG, THIRUNAVUKARASU, SRISKANTHARAJAH
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:Systems, apparatuses and methods for determining a surface profile of a substrate are provided. In one embodiment, a method includes projecting a signal having a vertical component/profile across the surface of the substrate from a plurality of locations along a first side of the substrate, capturing the projected signals at each of a plurality of respective locations across the surface of the substrate and determining a surface profile for the substrate using the captured signals. The process can be automated using a controller having predetermined projection and capture positions along respective sides of the substrate, where a surface profile of the substrate can be automatically determined by the controller using the captured signals.