The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2020
Filed:
Feb. 13, 2019
Siltectra Gmbh, Dresden, DE;
Lukas Lichtensteiger, Zurich, CH;
Wolfram Drescher, Dresden, DE;
Siltectra GmbH, Dresden, DE;
Abstract
The present invention relates to a method for the production of layers of solid material, in particular for use as wafers. The method may include the following steps: providing a workpiece for the separation of the layers of solid material with the workpiece optionally having at least one exposed surface, producing and/or providing a carrier unit for receiving at least one layer of solid material having the carrier unit optionally having a receiving layer for holding the layer of solid material, attaching the receiving layer to the exposed surface of the workpiece forming a composite structure, producing a break initiation point by means of pre-defined local stress induction in the peripheral region, including at the edge, of the workpiece, and separating the layer of solid material from the workpiece starting from the break initiation point.