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:
Oct. 13, 2015
Filed:
Nov. 22, 2012
Koninklijke Philips N.v., Eindhoven, NL;
Dirk Hente, Wuerselen, DE;
Joseph Hendrik Anna Maria Jacobs, Eygelshoven, NL;
CĂ©line Catherine Sarah Nicole, Eindhoven, NL;
Christian Kalkschmidt, Aachen, DE;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The present invention relates to a method for adjusting a color point () of light emitted () from an organic light emitting diode OLED () by using current () with a modulated waveform for driving the OLED (), wherein the waveform is characterized by at least three different parameters, and wherein the color point () is located in a color space, the method comprising: —defining a color point target (); —adjusting simultaneously the at least three parameters to tune the waveform such that the resulting light output of the OLED () is lying within a predefined area around the color point target and for which the brightness of the OLED () remains at a predefined level; and —employing the tuned waveform to provide the current () with the modulated waveform to the OLED ().