Invention Grant
- Patent Title: Two-step decapsulation technique for semiconductor package having silver bond wires
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Application No.: US17513037Application Date: 2021-10-28
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Publication No.: US12106973B2Publication Date: 2024-10-01
- Inventor: Erwin Hendarto
- Applicant: Silicon Laboratories Inc.
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Trop, Pruner & Hu, P.C.
- Main IPC: H01L21/56
- IPC: H01L21/56 ; B23K26/362 ; B23K101/40 ; H01L21/67 ; H01L23/00 ; H01L23/31 ; H01L23/552

Abstract:
In one embodiment, a method includes: laser ablating an encapsulant of a semiconductor package, until a threshold amount of the encapsulant remains above one or more die of the semiconductor package; and providing at least one drop of acid onto a surface of the ablated semiconductor package to acid etch for a first time duration, to remove a remaining portion of the encapsulant above the one or more die, where after the acid etch, a die of interest is exposed and the silver bond wires of the semiconductor package are preserved.
Public/Granted literature
- US20230138508A1 TWO-STEP DECAPSULATION TECHNIQUE FOR SEMICONDUCTOR PACKAGE HAVING SILVER BOND WIRES Public/Granted day:2023-05-04
Information query
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