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. 09, 2024
Filed:
Jan. 11, 2023
Ignis Innovation Inc., Waterloo, CA;
Gholamreza Chaji, Waterloo, CA;
Joseph Marcel Dionne, Waterloo, CA;
Yaser Azizi, Waterloo, CA;
Javid Jaffari, Kitchener, CA;
Abbas Hormati, Kitchener, CA;
Tong Liu, Waterloo, CA;
Stefan Alexander, Waterloo, CA;
Ignis Innovation Inc., Road Town, VG;
Abstract
A voltage-programmed display system allows measurement of effects on pixels in a panel that includes both active pixels and reference pixels coupled to a supply line and a programming line. The reference pixels are controlled so that they are not subject to substantial changes due to aging and operating conditions over time. A readout circuit is coupled to the active pixels and the reference pixels for reading at least one of current, voltage or charge from the pixels when they are supplied with known input signals. The readout circuit is subject to changes due to aging and operating conditions over time, but the readout values from the reference pixels are used to adjust the readout values from the active pixels to compensate for the unwanted effects.