Process for producing semiconductor chips having a...

Semiconductor device manufacturing: process – Semiconductor substrate dicing – With attachment to temporary support or carrier

Reexamination Certificate

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C156S289000, C257SE21599

Reexamination Certificate

active

11113481

ABSTRACT:
A process for producing semiconductor chips having a protective film on the back surface includes the steps of: providing a sheet to form the protective film having a release sheet and a protective film-forming layer formed on a detachable surface of the release sheet, wherein the protective film-forming layer includes a thermosetting component, an energy ray-curable component and a binder polymer component; adhering a protective film-forming layer of the sheet to form the protective film onto a back surface of a semiconductor wafer having circuits on its surface; curing the protective film-forming layer by irradiation with an energy ray, and thereafter, further conducting the additional steps of (in any order): detaching the release sheet from the protective film-forming layer; further curing the protective film-forming layer by heating; and dicing the semiconductor wafer together with the protective film-forming layer with respect to each circuit.

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patent: WO 00/50250 (2000-08-01), None

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