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:
Dec. 05, 2023
Filed:
Jun. 08, 2018
Siltectra Gmbh, Dresden, DE;
Siltectra GmbH, Dresden, DE;
Abstract
The invention relates to a method for creating a detachment zone in a solid in order to detach a solid portion, especially a solid layer, from the solid, said solid portion that is to be detached being thinner than the solid from which the solid portion has been removed. According to the invention, the method comprises at least the steps of: providing a solid which is to be processed and which is preferably made of a chemical compound; providing a LASER light source; subjecting the solid to LASER radiation from the LASER light source so that the laser beams penetrate into the solid via a surface of the solid portion that is to be cut off; the LASER radiation is applied in a defined manner to a predefined portion of the solid inside the solid such that a detachment zone or a plurality of partial detachment zones is formed; the method is characterized in that a number of modifications is successively created in the crystal lattice by the applied laser radiation, and the crystal lattice fissures at least partially in the regions surrounding the modifications as a result of the modification, said fissures in the region of the modifications predefining the detachment zone or a plurality of partial detachment zones.