发明授权
US08748296B2 Edge-exclusion spalling method for improving substrate reusability 有权
用于提高底物可重用性的边缘排除剥落方法

Edge-exclusion spalling method for improving substrate reusability
摘要:
A method to minimize edge-related substrate breakage during spalling using an edge-exclusion region where the stressor layer is either non-present (excluded either during deposition or removed afterwards) or present but significantly non-adhered to the substrate surface in the exclusion region is provided. In one embodiment, the method includes forming an edge exclusion material on an upper surface and near an edge of a base substrate. A stressor layer is then formed on exposed portions of the upper surface of the base substrate and atop the edge exclusion material, A portion of the base substrate that is located beneath the stressor layer and which is not covered by the edge exclusion material is then spalled.
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