Invention Grant
- Patent Title: Devices and stacked microelectronic packages with package surface conductors and methods of their fabrication
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Application No.: US14994967Application Date: 2016-01-13
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Publication No.: US09960149B2Publication Date: 2018-05-01
- Inventor: Michael B. Vincent , Scott M. Hayes
- Applicant: Freescale Semiconductor, Inc.
- Applicant Address: US TX Austin
- Assignee: NXP USA, INC.
- Current Assignee: NXP USA, INC.
- Current Assignee Address: US TX Austin
- Agent Sherry W. Schumm
- Main IPC: H01L23/31
- IPC: H01L23/31 ; H01L23/532 ; H01L25/065 ; H01L25/00 ; H01L21/56 ; H01L23/00 ; H01L25/10 ; H01L23/528

Abstract:
Embodiments of methods for forming a device include performing an oxidation inhibiting treatment to exposed ends of first and second device-to-edge conductors, and forming a package surface conductor to electrically couple the exposed ends of the first and second device-to-edge conductors. Performing the oxidation inhibiting treatment may include applying an organic solderability protectant coating to the exposed ends, or plating the exposed ends with a conductive plating material. The method may further include applying a conformal protective coating over the package surface conductor. An embodiment of a device formed using such a method includes a package body, the first and second device-to-edge conductors, the package surface conductor on a surface of the package body and extending between the first and second device-to-edge conductors, and the conformal protective coating over the package surface conductor.
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