The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 19, 2015

Filed:

Jun. 03, 2011
Applicant:

Stephan Riedel, Dresden, DE;

Inventor:

Stephan Riedel, Dresden, DE;

Assignee:

PLASTIC LOGIC LIMITED, Cambridge, GB;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); G01B 7/06 (2006.01);
U.S. Cl.
CPC ...
G01B 7/08 (2013.01); G01B 7/06 (2013.01);
Abstract

A technique comprising: producing a plurality of devices according to a common production process; and determining the thickness of a layer of one of said plurality of devices using an indicator of a first electrical property dependent on the area of overlap between a first element of the device and a second element of the device partially underlying said first element via said layer, wherein the method further comprises: additionally using an indicator of a second electrical property dependent on the area of overlap between said first element of the device and a third element of the device also partially underlying said first element via said layer, wherein (a) the difference between (i) a measured indicator of said first electrical property, and (ii) a measured indicator of said second electrical property provides a more reliable indicator of the thickness of said layer than (b) an indicator of said first electrical property.


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