Invention Publication
- Patent Title: FRAME MASK FOR SINGULATING WAFERS BY PLASMA ETCHING
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Application No.: US18054547Application Date: 2022-11-11
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Publication No.: US20230154795A1Publication Date: 2023-05-18
- Inventor: Dzafir Bin Mohd Shariff , IL KWON SHIM , Enrique Jr Sarile , Jackson Fernandez Rosario , Ronnie M. De Villa , Chan Loong Neo
- Applicant: UTAC Headquarters Pte. Ltd.
- Applicant Address: SG Singapore
- Assignee: UTAC Headquarters Pte. Ltd.
- Current Assignee: UTAC Headquarters Pte. Ltd.
- Current Assignee Address: SG Singapore
- Main IPC: H01L21/78
- IPC: H01L21/78 ; H01L21/308

Abstract:
The present disclosure relates to plasma dicing of wafer. More specifically, the present disclosure is directed to frame masks and methods for plasma dicing wafers utilizing frame masks. The frame mask includes a mask frame, wherein the mask frame includes a top ring mask support and a side ring mask support. A plurality of mask segments suspended from the top ring mask support by segment supports, the mask segments are configured to define dicing channels on a blank wafer. The frame mask is configured to removably sit onto a frame lift assembly in a plasma chamber of a plasma dicing tool, when fitted onto the frame lift assembly, the mask segments are disposed above a wafer on a wafer ring frame for plasma dicing. The mask frame is configured to enable flow of plasma therethrough to the wafer to etch the wafer to form dicing channels defined by the mask segments.
Information query
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