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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.:

US 11967589 B1

PDFFull Text
Date of Patent:
Apr. 23, 2024

Filed:

Jun. 03, 2021

Systems and methods for multi-color led pixel unit with horizontal light emission

Applicant:

Jade Bird Display (Shanghai) Limited, Shanghai, CN;

Inventors:

Qunchao Xu, Shanghai, CN;

Huiwen Xu, Shanghai, CN;

Qiming Li, Albuquerque, NM (US);

Assignee:

Jade Bird Display (Shanghai) Limited, Shanghai, CN;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Eric A Ward

Assistant Examiner:

Nora Taylor Nix

Int. Cl.
CPC ...
H01L 25/16 (2023.01); H01L 23/00 (2006.01); H01L 33/40 (2010.01); H01L 33/58 (2010.01); H01L 33/60 (2010.01); H01L 33/62 (2010.01); H01L 33/30 (2010.01); H01L 33/32 (2010.01);
U.S. Cl.
CPC ...
H01L 25/167 (2013.01); H01L 24/32 (2013.01); H01L 24/33 (2013.01); H01L 24/73 (2013.01); H01L 33/405 (2013.01); H01L 33/58 (2013.01); H01L 33/60 (2013.01); H01L 33/62 (2013.01); H01L 33/30 (2013.01); H01L 33/32 (2013.01); H01L 2224/29144 (2013.01); H01L 2224/29188 (2013.01); H01L 2224/2919 (2013.01); H01L 2224/29582 (2013.01); H01L 2224/29669 (2013.01); H01L 2224/29671 (2013.01); H01L 2224/32145 (2013.01); H01L 2224/33181 (2013.01); H01L 2224/73217 (2013.01); H01L 2224/73267 (2013.01); H01L 2924/12041 (2013.01); H01L 2924/1426 (2013.01);
Abstract

A micro multi-color LED device includes two or more LED structures for emitting a range of colors. The two or more LED structures are vertically stacked to combine light from the two more LED structures. Light from the micro multi-color LED device is emitted horizontally from each of the LED structures and reflected upward via some reflective structures. In some embodiments, each LED structure is connected to a pixel driver and/or a common electrode. The LED structures are bonded together through bonding layers. In some embodiments, planarization layers enclose each of the LED structures or the micro multi-color LED device. In some embodiments, one or more of reflective layers, refractive layers, micro-lenses, spacers, and reflective cup structures are implemented in the device to improve the LED emission efficiency. A display panel comprising an array of the micro tri-color LED devices has a high resolution and a high illumination brightness.

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