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Light emission reducing compounds for electronic devices

  • US 10,495,795 B2
  • Filed: 03/21/2019
  • Issued: 12/03/2019
  • Est. Priority Date: 05/23/2014
  • Status: Active Grant
First Claim
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1. A light-filtering film for a screen of a device comprising:

  • a polymer substrate;

    a first absorbing compound combined with the polymer substrate, the first absorbing compound absorbing blue light in a blue notch band having a full-width half-maximum of not greater than about 50 nm; and

    a second absorbing compound combined with the polymer substrate, the second absorbing compound absorbing red light in a red notch band having a full-width half-maximum of not greater than about 50 nm,wherein the first absorbing compound and the second absorbing compound are provided in combination so that, for light produced by the screen transmitted through the light-filtering film, correlated color temperature is within about 1000 Kelvin of correlated color temperature for light produced by the screen that is not transmitted through the light-filtering film, andwherein the first absorbing compound absorbs in a wavelength range from about 260 nm to about 400 nm, and the second absorbing compound absorbs in a wavelength range of from about 800 nm to about 1200 nm.

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