Granted Patent B2

US 12,554,159 · App. 18/755,860 · Granted Feb 17, 2026

Inventors: Justin Barrett (Eden Prairie, MN); Steven D. Moe (Savage, MN); Bonnie G. Simmons (Concord, NH); Justin Tolle (Maple Grove, MN)

Assignee: Eyesafe Inc.

G02F1/133509C09B47/04C09J7/20G02B1/04G02B1/14G02B5/003G02B5/205G02B5/208G02B5/223G02F1/133562C09J2301/302G02F1/133514G02F1/133528G02F2201/083G02F2201/086G02F2201/50G02F2202/022G02F2202/04

Abstract

Claims (46)

1 . An electronic display device comprising:

a light-emitting diode display device;

a capacity grid layer; and

a neutral density filter comprising

an organic dye, and

a polymer substrate selected from the group consisting of polycarbonates, PVCs, epoxies, polyesters, polyethylenes, polyamides, and combinations thereof,

wherein

the neutral density filter blocks at least a portion of the ultraviolet wavelength range, and

the neutral density filter includes an absorption peak in the wavelength range between 400 nm and 500 nm or between 530 nm and 630 nm.

2 . The electronic display device of claim 1 , wherein the absorption peak is in the wavelength range between 400 nm and 500 nm.

3 . The electronic display device of claim 2 , wherein the absorption peak is in a wavelength range between 400 nm and 455 nm.

4 . The electronic display device of claim 3 , wherein the neutral density filter blocks at least 20% of light in a wavelength range of 415 nm to 455 nm.

5 . The electronic display device of claim 2 , wherein the absorption peak in a wavelength range between 455 nm and 500 nm.

6 . The electronic display device of claim 5 , wherein the neutral density filter blocks at least 20% of light in the wavelength range of 455 nm to 500 nm.

7 . The electronic display device of claim 2 , wherein the neutral density filter further includes at least a second absorption peak in the wavelength range between 530 nm and 630 nm.

8 . The electronic display device of claim 7 , wherein

the absorption peak is in a wavelength range between 415 nm and 455 nm,

the neutral density filter blocks at least 20% of light in the wavelength range of 415 nm to 455 nm,

the second absorption peak is in a wavelength range of 530 nm to 580 nm, and

the neutral density filter blocks at least 10% of light in the wavelength range of 530 nm to 580 nm.

9 . The electronic display device of claim 7 , wherein

the absorption peak is in a wavelength range between 415 nm and 455 nm,

the neutral density filter blocks at least 20% of light in the wavelength range of 415 nm to 455 nm,

the second absorption peak is in a wavelength range of 580 nm to 630 nm, and

the neutral density filter blocks at least 25% of light in the wavelength range of 580 nm to 630 nm.

10 . The electronic display device of claim 7 , wherein

the absorption peak is in a wavelength range between 455 nm and 500 nm,

the neutral density filter blocks at least 20% of light in the wavelength range of 455 nm to 500 nm,

the second absorption peak is in a wavelength range of 530 nm to 580 nm, and

the neutral density filter blocks at least 10% of light in the wavelength range of 530 nm to 580 nm.

11 . The electronic display device of claim 7 , wherein

the absorption peak is in a wavelength range between 455 nm and 500 nm,

the neutral density filter blocks at least 20% of light in the wavelength range of 455 nm to 500 nm,

the second absorption peak is in a wavelength range of 580 nm to 630 nm, and

the neutral density filter blocks at least 25% of light in the wavelength range of 580 nm to 630 nm.

12 . The electronic display device of claim 1 , wherein the absorption peak is in the wavelength range between 530 nm and 630 nm.

13 . The electronic display device of claim 12 , wherein the absorption peak is in the wavelength range between 530 nm and 580 nm.

14 . The electronic display device of claim 13 , wherein the neutral density filter blocks at least 10% of light in a wavelength range of 530 nm to 580 nm.

15 . The electronic display device of claim 12 , wherein the absorption peak is in the wavelength range between 580 nm and 630 nm.

16 . The electronic display device of claim 15 , wherein the neutral density filter blocks at least 25% of light in a wavelength range of 580 nm to 630 nm.

17 . The electronic display device of claim 1 , wherein the light-emitting diode display device comprises a screen, and the neutral density filter is located behind the screen.

18 . The electronic display device of claim 1 , wherein the neutral density filter is included within the device during manufacture of the device.

19 . The electronic display device of claim 1 , wherein the light-emitting diode display device comprises a screen, and the screen comprises the neutral density filter.

20 . The electronic display device of claim 1 , wherein the light-emitting diode display device comprises a screen, and the screen comprises a privacy screen feature.

21 . The electronic display device of claim 1 , wherein the organic dye is comprised of a phthalocyanine dye.

22 . The electronic display device of claim 1 , wherein the organic dye is comprised of a porphyrin dye.

Assignments (1)

Continuity (12)

References Cited (400)