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:
Sep. 11, 2018
Filed:
Apr. 11, 2017
The Board of Trustees of the University of Illinois, Urbana, IL (US);
Paul V. Braun, Champaign, IL (US);
Osman S. Cifci, Urbana, IL (US);
Eric S. Epstein, Urbana, IL (US);
Hao Chen, Urbana, IL (US);
Lu Xu, Champaign, IL (US);
Ralph G. Nuzzo, Champaign, IL (US);
The Board of Trustees of the University of Illinois, Urbana, IL (US);
Abstract
An optical microcavity for a high-contrast display comprises an enclosed cavity having a front wall and a back wall, where the front wall comprises a pinhole opening for emission of light from the cavity and the back wall is configured to generate or transmit light into the cavity. An outer surface of the front wall absorbs some or substantially all optical wavelengths of externally incident light so as to appear black or colored. An inner surface of the front wall comprises a light reflectivity of greater than 90% to promote photon recycling within the cavity and light emission through the pinhole opening.