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:
Dec. 03, 2019
Filed:
Oct. 06, 2017
Nthdegree Technologies Worldwide Inc., Tempe, AZ (US);
William Johnstone Ray, Fountain Hills, AZ (US);
Mark David Lowenthal, Gilbert, AZ (US);
Richard Austin Blanchard, Los Altos, CA (US);
Lixin Zheng, Kirkland, WA (US);
Xiaorong Cai, Mount Pleasant, SC (US);
Bradley S. Oraw, Chandler, AZ (US);
Nthdegree Technologies Worldwide Inc., Tempe, AZ (US);
Abstract
Active LEDs have a control transistor in series with an LED and have a top electrode, a bottom electrode, and a control electrode. The active LEDs are microscopic and dispersed in an ink. A substrate has column lines, and the active LEDs are printed at various pixel locations so the bottom electrodes contact the column lines. A hydrophobic mask defines the pixel locations. Due to the printing process, there are different numbers of active LEDs in the various pixel locations. Row lines and control lines contact the top and control electrodes so that the active LEDs in each single pixel location are connected in parallel. If the LEDs emit blue light, red and green phosphors are printed over various pixel locations to create an ultra-thin color display. Any active LED may be addressed using row and column addressing, and the brightness may be controlled using the control lines.