Light emission reducing compounds for electronic devices
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. A second absorbing compound combined with the polymer substrate, the second absorbing compound absorbing green light in a green notch, wherein the first absorbing compound comprises an absorption that has a maximum absorbance peak between about 420 nm and about 445 nm, and wherein the second absorbing compound has a maximum absorbance peak between about 540 nm and 610 nm.
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 green light in a green notch,
wherein the first absorbing compound has a maximum absorbance peak at approximately 455 nm, and
wherein the second absorbing compound has a maximum absorbance peak between about 540 nm and 610 nm and absorbs at least 20% of photosensitivity light.
2. A light-filtering film according to claim 1 , wherein the polymer substrate comprises an acrylic polymer, an epoxy polymer, a polyamide, a polycarbonate, a polyester, a co-polyester of PETG and PCTG, a polyethylene, a polyolefin, a polypropylene, a polystyrene, a polysulfone, a polyurea, a polyvinylchloride, or a styrene acrylonitrile.
3. A light-filtering film according to claim 1 , comprising at least one of an antiglare coating, a hard coating and a tack coating.
4. A light-filtering film according to claim 1 , further comprising an electronic display device.
5. A light-filtering film according to claim 4 , wherein the light-filtering film is applied to the electronic display device.
6. A light-filtering film according to claim 4 , wherein the electronic device comprises at least one of an LED (light-emitting diode), LCD (liquid-crystal display), computer monitor, equipment screen, television, tablet, or cellular phone.
7. A light-filtering film according to claim 4 , wherein the electronic device comprises a capacitive touch screen.
8. A light-filtering film according to claim 1 , wherein the first absorbing compound comprises a blue or blue-green organic dye dispersed therein.
9. A light-filtering film according to claim 8 , wherein the organic dye comprises a blue-green phthalocyanine dye.
10. A light-filtering film according to claim 8 , wherein the organic dye comprises between about 0.05 percent to about 2.00 percent of the polymer substrate by weight.
11. A light-filtering film according to claim 1 , wherein the filter can output light that measures to within 1000 Kelvin of a D65 white light.
12. A light-filtering film according to claim 1 , wherein the first absorbing compound, the second absorbing compound, or both are impregnated into the polymer substrate.
13. A light-filtering film according to claim 1 , comprising an adhesive.
14. A light-filtering film according to claim 13 , wherein the adhesive comprises a pressure-sensitive adhesive.
15. A light-filtering film according to claim 1 , 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.
16. A method for light-filtering for a screen of a device comprising:
having a film on a light emitting display, wherein the film reduces transmissivity by:
having a polymer substrate and a first absorbing compound combined with the polymer substrate;
absorbing, by the first absorbing compound, blue light in a blue notch band having a full-width half-maximum of not greater than about 50 nm; and
absorbing green light in a green notch by a second absorbing compound combined with the polymer substrate,
wherein the first absorbing compound has a maximum absorbance peak at approximately 455 nm and absorbs approximately 30-40% of high energy violet light, and
wherein the second absorbing compound has a maximum absorbance peak between about 540 nm and 610 nm and absorbs at least 20% of photosensitivity light.
17. A light-filtering film for a screen of a device comprising:
a polymer substrate;
a first absorbing compound combined with the polymer substrate, wherein the first absorbing compound has a maximum absorbance peak at approximately 455 nm and absorbs approximately 30-40% of high energy violet light, and
a second absorbing compound combined with the polymer substrate, the second absorbing compound absorbing green light, wherein the green range of light comprises a range between about 495 nm and about 570 nm and the second absorbing compound absorbs about 10% more light than between 460 and 495 nm, wherein the second absorbing compound continues light absorption from the green light range into the yellow light range between about 565 nanometers and about 590 nanometers and absorbs about 5% more light than the maximum green light absorption.
18. A light-filtering film according to claim 17 , wherein the film is further configured to transmit sufficient light generated by the device such that an image generated by the device includes an increase in yellow light by at least 5%.
19. 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 light in a yellow-green band,
wherein the first absorbing compound comprises an absorption peak at approximately 455 nm, and
wherein the second absorbing compound comprises an absorption that has a decrease of light transmission by at least 5% within the range of about 565 nm and 590 nm.