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. 10, 2012
Filed:
May. 29, 2008
John W. Hamer, Rochester, NY (US);
Dustin L. Winters, Webster, NY (US);
Charles I. Levey, West Henrietta, NY (US);
John W. Hamer, Rochester, NY (US);
Dustin L. Winters, Webster, NY (US);
Charles I. Levey, West Henrietta, NY (US);
Global OLED Technology LLC, Herndon, VA (US);
Abstract
A method of compensating for changes in the characteristics of transistors and electroluminescent devices in an electroluminescent display, includes: providing an electroluminescent display having a two-dimensional array of subpixels arranged forming each pixel having at least three subpixels of different colors, with each having an electroluminescent device and a drive transistor, wherein each electroluminescent device is driven by the corresponding drive transistor; providing in each pixel a readout circuit for one of the subpixels of a specific color having a first readout transistor and a second readout transistor connected in series; using the readout circuit to derive a correction signal based on the characteristics of at least one of the transistors in the specific color subpixel, or the electroluminescent device in the specific color subpixel, or both; and using the correction signal to adjust the drive signals.