Invention Grant
- Patent Title: Backside metal photolithographic patterning die singulation systems and related methods
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Application No.: US17134717Application Date: 2020-12-28
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Publication No.: US11508579B2Publication Date: 2022-11-22
- Inventor: Takashi Noma , Michael J. Seddon
- Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- Applicant Address: US AZ Phoenix
- Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- Current Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- Current Assignee Address: US AZ Phoenix
- Agency: Adam R. Stephenson, Ltd.
- Main IPC: H01L21/78
- IPC: H01L21/78 ; H01L21/027 ; H01L21/311 ; H01L21/3213

Abstract:
Implementations of die singulation systems and related methods may include forming a plurality of die on a first side of a substrate, forming a backside metal layer on a second side of a substrate, applying a photoresist layer over the backside metal layer, patterning the photoresist layer along a die street of the substrate, and forming a groove at the pattern of the photoresist layer only partially through a thickness of the backside metal layer. The groove may be located in the die street of the substrate. The method may also include etching through a remaining portion of the backside metal layer located in the die street, removing the photoresist layer, and singulating the plurality of die included in the substrate by removing substrate material in the die street.
Public/Granted literature
- US20210118675A1 BACKSIDE METAL PHOTOLITHOGRAPHIC PATTERNING DIE SINGULATION SYSTEMS AND RELATED METHODS Public/Granted day:2021-04-22
Information query
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