(19)

(11)

EP 4 241 350 A1

(12)

(43) Date of publication: 13.09.2023 Bulletin 2023/37 (21) Application number: 21888158.9 (22) Date of filing: 18.06.2021

(51) International Patent Classification (IPC):  H01S 5/183(2006.01) H01S 5/10(2021.01) H01S 5/20(2006.01) (52) Cooperative Patent Classification (CPC): H01S 5/11; H01S 5/2081; H01S 5/2068; H01S 5/2031; H01S 5/3211; H01S 5/3412; H01S 2301/176; H01S 5/04253; H01S 5/2027; H01S 5/04254; H01S 5/04256; H01S 5/04257 (86) International application number: PCT/CN2021/100962 (87) International publication number: WO 2022/095455 (12.05.2022 Gazette 2022/19)

(84) Designated Contracting States: 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 States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 08.11.2020 US 202063111065 P 27.04.2021 US 202117241584 (71) Applicant: Phosertek Corporation 300195, Taiwan (TW)	(72) Inventors: CHEN, Yu-Chen Hsinchu City, Taiwan 300195 (TW) LIN, Chien-Hung Hsinchu City, Taiwan 300195 (TW) CHOU, Bo-Tsun Hsinchu City, Taiwan 300195 (TW) WENG, Chih-Yuan Hsinchu City, Taiwan 300195 (TW) (74) Representative: Kurig, Thomas  Becker Kurig & Partner Patentanwälte mbB Bavariastraße 7 80336 München 80336 München (DE)