公开(公告)号：US20240105631A1

公开(公告)日：2024-03-28

申请号：US18152558

申请日：2023-01-10

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Jeng-An Wang ,  Sheng-Chi Lin ,  Hao-Cheng Hou ,  Tsung-Ding Wang ,  Chien-Hsun Lee

IPC: H01L23/538 ,  H01L21/48 ,  H01L21/56 ,  H01L21/683 ,  H01L23/00 ,  H01L23/31

CPC classification number: H01L23/5389 ,  H01L21/4853 ,  H01L21/4857 ,  H01L21/565 ,  H01L21/568 ,  H01L21/6835 ,  H01L23/3128 ,  H01L23/5383 ,  H01L23/5386 ,  H01L24/19 ,  H01L24/20 ,  H01L2221/68372 ,  H01L2224/214

Abstract: Embodiments provide a method of performing a carrier switch for a device wafer, attaching a second wafer and removing a first wafer. A buffer layer is deposited over the device wafer, buffer layer reducing the topography of the surface of the device wafer. After the carrier switch a film-on-wire layer is removed from the buffer layer and then the buffer layer is at least in part removed.