Methods and apparatus for transparent display using scattering nanoparticles

Hsu, Chia Wei; Qiu, Wenjun; Zhen, Bo; Shapira, Ofer; Soljacic, Marin

Methods and apparatus for transparent display using scattering nanoparticles

Patent · Tue Mar 27 04:00:00 EDT 2018

OSTI ID:1532068

Hsu, Chia Wei; Qiu, Wenjun; Zhen, Bo; Shapira, Ofer; Soljacic, Marin

Transparent displays enable many useful applications, including heads-up displays for cars and aircraft as well as displays on eyeglasses and glass windows. Unfortunately, transparent displays made of organic light-emitting diodes are typically expensive and opaque. Heads-up displays often require fixed light sources and have limited viewing angles. And transparent displays that use frequency conversion are typically energy inefficient. Conversely, the present transparent displays operate by scattering visible light from resonant nanoparticles with narrowband scattering cross sections and small absorption cross sections. More specifically, projecting an image onto a transparent screen doped with nanoparticles that selectively scatter light at the image wavelength(s) yields an image on the screen visible to an observer. Because the nanoparticles scatter light at only certain wavelengths, the screen is practically transparent under ambient light. Exemplary transparent scattering displays can be simple, inexpensive, scalable to large sizes, viewable over wide angular ranges, energy efficient, and transparent simultaneously.

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Research Organization:: Massachusetts Inst. of Technology, Cambridge, MA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: SC0001299; SC0001299

Assignee:: Massachusetts Institute of Technology (Cambridge, MA)

Patent Number(s):: 9,927,616

Application Number:: 15/237,800

OSTI ID:: 1532068

Country of Publication:: United States

Language:: English

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