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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 11791445 B1

PDFFull Text
Date of Patent:
Oct. 17, 2023

Filed:

Jul. 26, 2022

Lighting device with switching material

Applicant:

Lumileds Llc, San Jose, CA (US);

Inventors:

Nicola Bettina Pfeffer, Eindhoven, NL;

Arjen Gerben Van der Sijde, Eindhoven, NL;

Marcel Rene Bohmer, Eindhoven, NL;

Assignee:

Lumileds LLC, San Jose, CA (US);

Attorney:

Schwegman, Lundberg & Woessner, P.A.

Primary Examiner:

Zheng Song

Assistant Examiner:

Glenn Zimmerman

Int. Cl.
CPC ...
H01L 33/58 (2010.01); H01L 27/15 (2006.01); H01L 33/50 (2010.01); G02F 1/01 (2006.01); G02F 1/163 (2006.01); H01L 25/075 (2006.01); G02F 1/015 (2006.01); H10K 50/86 (2023.01); F21S 41/141 (2018.01); F21S 41/40 (2018.01); F21V 14/00 (2018.01); F21S 41/64 (2018.01); F21V 23/00 (2015.01); F21V 23/02 (2006.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
H01L 33/58 (2013.01); F21S 41/141 (2018.01); F21S 41/40 (2018.01); F21V 14/003 (2013.01); G02F 1/015 (2013.01); G02F 1/0126 (2013.01); G02F 1/0147 (2013.01); G02F 1/163 (2013.01); H01L 25/0753 (2013.01); H01L 27/156 (2013.01); H01L 33/50 (2013.01); H10K 50/865 (2023.02); F21S 41/64 (2018.01); F21S 41/645 (2018.01); F21V 23/005 (2013.01); F21V 23/02 (2013.01); F21Y 2115/10 (2016.08); G02F 2203/01 (2013.01); G02F 2203/02 (2013.01); G02F 2203/03 (2013.01); H01L 2933/0091 (2013.01);
Abstract

A lighting device comprises a light-emitting module with light-emitting elements, wherein the light-emitting elements are arranged adjacent to each other and are configured to emit light towards a light-emitting side. The light-emitting module is configured such that the light-emitting elements can be addressed partially independently of each other, such that some may be brought into a switched-on state while others are brought into a switched-off state. A top layer is disposed on the light-emitting module at the light-emitting side. Further comprising a switching material capable of a reversible change in transmittance for the light emitted by changing to a higher transmittance in regions where the top layer situated on light-emitting elements in the switched-on state or to a lower transmittance in regions of the top layer situated in the switched-off state. The invention further refers to methods for producing and operating a lighting device and using a lighting device.

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