Probe-able voltage contrast test structures

US9103875B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9103875-B2
Application numberUS-201213593975-A
CountryUS
Kind codeB2
Filing dateAug 24, 2012
Priority dateAug 12, 2009
Publication dateAug 11, 2015
Grant dateAug 11, 2015

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Abstract

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Test structures and method for detecting defects using the same. A probe-able voltage contrast (VC) comb test structure that includes first, second and third probe pads, a comb-like structure including grounded tines, floating tines between the grounded tines, switching devices coupled with an end portion of each floating tine, and connecting the floating tines to the second probe pad, and the third probe pad being a control pad which controls the switching devices. A probe-able VC serpentine test structure that includes first, second, third and fourth probe pads, a comb-like structure including grounded tines, floating tines between the grounded tines and each floating tine connected together between the second and third probe pads, switching devices connected to an end portion of each floating tine and connecting the floating tines to the second and third probe pads, and the fourth probe pad being a control pad which controls the switching devices.

First claim

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What is claimed is: 1. A method of detecting shorts using a test structure having first and second probe pads and a plurality of grounded tines are connected with the first probe pad, the method comprising: pulling a gate of each of the plurality of switching devices down via a resistor, to turn off the plurality of the switching devices, disconnecting the plurality of floating tines from each other and the second probe pad; scanning the test structure via an electron beam inspe…

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What does patent US9103875B2 cover?
Test structures and method for detecting defects using the same. A probe-able voltage contrast (VC) comb test structure that includes first, second and third probe pads, a comb-like structure including grounded tines, floating tines between the grounded tines, switching devices coupled with an end portion of each floating tine, and connecting the floating tines to the second probe pad, and the …
Who is the assignee on this patent?
Cote William J, Feng Yi, Patterson Oliver D, and 1 more
What technology area does this patent fall under?
Primary CPC classification G01R31/2884. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Aug 11 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).