EXPANDING METHOD AND EXPANDING APPARATUS

An expanding method for expanding an expandable sheet is provided. A wafer is attached to a central portion of the expandable sheet and an annular frame is attached to a peripheral portion of the expandable sheet. The expanding method includes an annular frame holding step of holding the annular fra...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Yodo, Yoshiaki, Zhao, Jinyan
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	An expanding method for expanding an expandable sheet is provided. A wafer is attached to a central portion of the expandable sheet and an annular frame is attached to a peripheral portion of the expandable sheet. The expanding method includes an annular frame holding step of holding the annular frame by using a holding unit, an expanding step of pushing the expandable sheet by using a pushing unit, thereby expanding the expandable sheet, a suction holding step of holding the wafer through the expandable sheet on a holding table under suction, and a push force removing step of removing a push force applied from the pushing unit to the expandable sheet. A minute projection for preventing the shrinkage of the expandable sheet is formed on the holding table along the outer circumference thereof.