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公开(公告)号：US09677741B2
公开(公告)日：2017-06-13
申请号：US15090348
申请日：2016-04-04
发明人： Chia Wei Hsu , Wenjun Qiu , Bo Zhen , Ofer Shapira , Marin Soljacic
CPC分类号： G02B27/0172 , B82Y20/00 , F21V9/08 , F21V9/12 , G02B5/0242 , G02B5/0278 , G02B2027/0112 , G02B2027/0145 , G02B2027/0147 , G02F1/0126 , G02F1/19 , G03B21/62 , G09F13/00 , Y10S977/773
摘要： 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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公开(公告)号：US20190339522A1
公开(公告)日：2019-11-07
申请号：US15935132
申请日：2018-03-26
发明人： Chia Wei Hsu , Wenjun Qiu , Bo Zhen , Ofer Shapira , Marin Soljacic
摘要： 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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3.发明授权公开(公告)号：US10324237B2
公开(公告)日：2019-06-18
申请号：US15476199
申请日：2017-03-31
发明人： Marin Soljacic , Bo Zhen , Emma Anquillare , Yi Yang , Chia Wei Hsu , John D. Joannopoulos
摘要： A transparent display includes nanoparticles having wavelength-selective scattering (e.g., resonant scattering) to preferentially scatter light at one or more discrete wavelengths so as to create images. The nanoparticles transmit light at other wavelengths to maintain a high transparency of the display. The nanoparticles are disposed in proximity to a thin film, which can enhance the scattering the process by reflecting light back to the nanoparticles for re-scattering or increasing the quality factor of the resonant scattering.
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