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.
Patent No.:
Date of Patent:
Jul. 12, 2005
Filed:
Nov. 18, 2002
Thomas F. Kaltenbach, Webster, NY (US);
Paul J. Guiguizian, Pittsford, NY (US);
Donald A. Stephenson, Rochester, NY (US);
Thomas F. Kaltenbach, Webster, NY (US);
Paul J. Guiguizian, Pittsford, NY (US);
Donald A. Stephenson, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method of determining defects in OLED devices having a plurality of pixels, each with its own emissive layer, which are capable of being excited by input light to produce an output color light response, including illuminating one or more OLED devices or a portion of an OLED device with light in a predetermined portion of the spectrum so that the pixel emissive layers are excited to produce an output color response for each pixel, capturing an image of the output light produced by the excited pixels and converting such captured light into a digital image; and determining device pixel size, shape, location, and emitted light intensity from the digital image and comparing such size, shape, location, and emitted light intensity with predetermined acceptable size, shape, location, and emitted light intensity ranges to determine whether there is a defect in the OLED device(s).