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:
Oct. 04, 2016
Filed:
Dec. 30, 2013
Chia Wei Hsu, Cambridge, MA (US);
Wenjun Qiu, Cambridge, MA (US);
BO Zhen, Cambridge, MA (US);
Ofer Shapira, Cambridge, MA (US);
Marin Soljacic, Belmont, MA (US);
Chia Wei Hsu, Cambridge, MA (US);
Wenjun Qiu, Cambridge, MA (US);
Bo Zhen, Cambridge, MA (US);
Ofer Shapira, Cambridge, MA (US);
Marin Soljacic, Belmont, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
Disclosed herein are transparent color displays with nanoparticles made with nonlinear materials and/or designed to exhibit optical resonances. These nanoparticles are embedded in or hosted on a transparent substrate, such as a flexible piece of clear plastic or acrylic. Illuminating the nanoparticles with invisible light (e.g., infrared or ultraviolet light) causes them to emit visible light. For example, a rare-earth doped nanoparticle may emit visible light when illuminated simultaneoulsy with a first infrared beam at a first wavelength λand a second infrared beam at a second wavelength λ. And a frequency-doubling nanoparticle may emit visible light when illuminated with a single infrared beam at the nanoparticle's resonant frequency. Selectively addressing these nanoparticles with appropiately selected pump beams yields visible light emitted from the nanoparticles hosted by the transparent substrate in a desired pattern.