EP 4267338 A1 20231101 - METHOD FOR SEPARATING A WORKPIECE
Title (en)
METHOD FOR SEPARATING A WORKPIECE
Title (de)
VERFAHREN ZUM TRENNEN EINES WERKSTÜCKS
Title (fr)
PROCÉDÉ DE SÉPARATION D'UNE PIÈCE
Publication
Application
Priority
- DE 102020134751 A 20201222
- EP 2021084593 W 20211207
Abstract (en)
[origin: WO2022135912A1] The present invention relates to a method for separating a workpiece (1), wherein material of the workpiece (1) is removed along a separating line (3) by means of a laser beam (20) comprising ultrashort laser pulses of an ultrashort pulse laser (50), wherein the material of the workpiece (1) is transparent to the wavelength of the laser beam (20) and has a refractive index of between 2.0 and 3.5, more preferably between 2.5 and 3.5, and the workpiece (1) is separated along the indentation (4) that arises as a result of the removal of the material, in a separating step.
IPC 8 full level
B23K 26/06 (2014.01); B23K 26/0622 (2014.01); B23K 26/064 (2014.01); B23K 26/08 (2014.01); B23K 26/364 (2014.01); B23K 26/53 (2014.01); B23K 26/57 (2014.01); C03B 33/08 (2006.01)
CPC (source: EP KR US)
B23K 26/0624 (2015.10 - EP KR US); B23K 26/364 (2015.10 - EP KR); B23K 26/38 (2013.01 - US); C03B 33/0222 (2013.01 - EP KR); B23K 2103/50 (2018.08 - EP KR); B23K 2103/56 (2018.08 - EP KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022135912 A1 20220630; CN 116723909 A 20230908; DE 102020134751 A1 20220623; EP 4267338 A1 20231101; KR 20230117226 A 20230807; US 2023373034 A1 20231123
DOCDB simple family (application)
EP 2021084593 W 20211207; CN 202180086007 A 20211207; DE 102020134751 A 20201222; EP 21836382 A 20211207; KR 20237023613 A 20211207; US 202318338357 A 20230621