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:
Aug. 23, 2011
Filed:
Nov. 28, 2007
Christopher J. White, Avon, NY (US);
Charles I. Levey, West Henrietta, NY (US);
Michael E. Miller, Honeoye Falls, NY (US);
Felipe A. Leon, Rochester, NY (US);
Christopher J. White, Avon, NY (US);
Charles I. Levey, West Henrietta, NY (US);
Michael E. Miller, Honeoye Falls, NY (US);
Felipe A. Leon, Rochester, NY (US);
Global OLED Technology LLC, Herndon, VA (US);
Abstract
A method of compensating for changes in the characteristics of transistors and EL devices in an EL display, includes providing an EL display having a two-dimensional array of EL devices arranged in rows and columns, wherein each EL device is driven by a drive circuit in response to a drive signal; providing a first drive circuit for an EL device having three transistors and providing a second drive circuit for an EL device having only two transistors, and wherein a first column in the display includes at least one first drive circuit and an adjacent second column includes at least one second drive circuit; deriving a correction signal based on the characteristics of a transistor in a first drive circuit, or the EL device; and using the correction signal to adjust the drive signals applied to the first drive circuit and one or more adjacent second drive circuits.