Shallow trench isolation integration methods and devices formed thereby

US9123771B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9123771-B2
Application numberUS-201313765723-A
CountryUS
Kind codeB2
Filing dateFeb 13, 2013
Priority dateFeb 13, 2013
Publication dateSep 1, 2015
Grant dateSep 1, 2015

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Abstract

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Aspects of the present invention generally relate to approaches for forming a semiconductor device such as a TSV device having a “buffer zone” or gap layer between the TSV and transistor(s). The gap layer is typically filled with a low stress thin film fill material that controls stresses and crack formation on the devices. Further, the gap layer ensures a certain spatial distance between TSVs and transistors to reduce the adverse effects of temperature excursion.

First claim

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What is claimed is: 1. A method for forming a semiconductor device, comprising: etching a set of trenches in a substrate; forming a first liner layer over the set of trenches; forming a second liner layer over the first liner layer; filling the set of trenches over the second liner layer with a first fill material; polishing and etching back the first fill material to leave a portion of the first fill material remaining; removing the second liner layer disposed above the…

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What does patent US9123771B2 cover?
Aspects of the present invention generally relate to approaches for forming a semiconductor device such as a TSV device having a “buffer zone” or gap layer between the TSV and transistor(s). The gap layer is typically filled with a low stress thin film fill material that controls stresses and crack formation on the devices. Further, the gap layer ensures a certain spatial distance between TSVs …
Who is the assignee on this patent?
Globalfoundries Inc
What technology area does this patent fall under?
Primary CPC classification H10W10/0143. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Sep 01 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).