Solid state light-emitting devices with improved contrast

A display device adapted to display at least one of text and visual images, the display device comprising:

• a plurality of electrically activated solid state light emitters including at least one first solid state light emitter comprising a first dominant wavelength in a range of from 441 nm to 495 nm, at least one second solid state light emitter comprising a second dominant wavelength in a range of from 496 nm to 570 nm, and at least one third solid state light emitter comprising a third dominant wavelength in a range of from 591 nm to 750 nm;
• a first filtering material arranged in a light path between at least some solid state light emitters of the plurality of electrically activated solid state light emitters and at least one light output surface of the display device, wherein the first filtering material is arranged to receive ambient light incident on the display device such that at least a portion of reflected ambient light exhibits a first spectral notch, wherein the first spectral notch comprises a first wavelength of greatest attenuation between the first dominant wavelength and the second dominant wavelength;
• and
• a second filtering material arranged in a light path between at least some solid state light emitters of the plurality of electrically activated solid state light emitters and at least one light output surface of the display device, wherein the second filtering material is arranged to receive ambient light incident on the display device such that at least a portion of reflected ambient light exhibits a second spectral notch, wherein the second spectral notch comprises a second wavelength of greatest attenuation between the second dominant wavelength and the third dominant wavelength.

A solid state light emitting device comprising:

• a plurality of electrically activated solid state light emitters including at least one first solid state light emitter arranged to generate emissions comprising a first dominant wavelength, at least one second solid state light emitter arranged to generate emissions comprising a second dominant wavelength, and at least one third solid state light emitter arranged to generate emissions comprising a third dominant wavelength;
• a first filtering material arranged in a light path between at least some solid state light emitters of the plurality of electrically activated solid state light emitters and at least one light output surface of the solid state light emitting device, wherein the first filtering material is arranged to receive ambient light incident on the solid state light emitting device such that at least a portion of reflected ambient light exhibits a first spectral notch, wherein the first spectral notch comprises a first wavelength of greatest attenuation between the first dominant wavelength and the second dominant wavelength;
• and
• a second filtering material arranged in a light path between at least some solid state light emitters of the plurality of electrically activated solid state light emitters and at least one light output surface of the solid state light emitting device, wherein the second filtering material is arranged to receive ambient light incident on the solid state light emitting device such that at least a portion of reflected ambient light exhibits a second spectral notch, wherein the second spectral notch comprises a second wavelength of greatest attenuation between the second dominant wavelength and the third dominant wavelength.