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:
May. 01, 2007
Filed:
Sep. 22, 2004
Ronald S. Cok, Rochester, NY (US);
James H. Ford, Rochester, NY (US);
Ronald S. Cok, Rochester, NY (US);
James H. Ford, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method for manufacturing and grading OLED devices is described, comprising the steps of: a) manufacturing OLED devices having a plurality of pixels; b) measuring pixel brightness and uniformity variation of each of the OLED devices prior to burning-in the OLED devices; c) correcting the pixel brightness and uniformity variation of each of the OLED devices prior to burning-in the OLED devices; d) grading each of the corrected OLED devices prior to burning-in the OLED devices; e) burning-in OLED devices graded as acceptable prior to burning-in the OLED devices; f) measuring burned-in pixel brightness and uniformity variation of each of the burned-in OLED devices; g) re-correcting the pixel brightness and uniformity variation of each of the burned-in OLED devices; and h) grading each of the re-corrected, burned-in OLED devices. The present invention has the advantage of providing improved yields in manufacture of OLED displays having acceptable uniformity and thereby reducing the cost of manufacturing an OLED display.