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. 31, 2022
Filed:
Mar. 29, 2021
Applicant:
Ignis Innovation Inc., Waterloo, CA;
Inventors:
Denis Striakhilev, Waterloo, CA;
Arokia Nathan, Cambridge, GB;
Yuri Vygranenko, Waterloo, CA;
Sheng Tao, Waterloo, CA;
Assignee:
Ignis Innovation Inc., Waterloo, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/32 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01); H01L 27/12 (2006.01);
U.S. Cl.
CPC ...
H01L 27/3248 (2013.01); H01L 27/3246 (2013.01); H01L 27/3258 (2013.01); H01L 27/3262 (2013.01); H01L 27/3272 (2013.01); H01L 27/3276 (2013.01); H01L 51/5234 (2013.01); H01L 51/56 (2013.01); H01L 27/124 (2013.01); H01L 27/1248 (2013.01); H01L 2227/323 (2013.01); H01L 2251/5315 (2013.01);
Abstract
A pixel having an organic light emitting diode (OLED) and method for fabricating the pixel is provided. A planarization dielectric layer is provided between a thin-film transistor (TFT) based backplane and OLED layers. A through via between the TFT backplane and the OLED layers forms a sidewall angle of less than 90 degrees to the TFT backplane. The via area and edges of an OLED bottom electrode pattern may be covered with a dielectric cap.