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US 2024/0407223 A1Published application
Display device
AssigneeSharp Display Technology Corporation
InventorsJun SAKUMA, Yasushi ASAOKA
Life of this patent
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Abstract
Sb1<Eb×Sb2 is satisfied, where Eb is the energy conversion efficiency of a blue-wavelength conversion layer, where Sb1 is the standard photopic luminous efficiency of first blue light, where Sb2 is the standard photopic luminous efficiency of second blue light.
Claims9
A display device comprising:
- a blue light-emitting layer composed of an organic light-emitting diode or a quantum-dot light-emitting diode;
- and
- a blue-wavelength conversion layer,
- wherein the blue light-emitting layer is configured to emit first blue light having a peak wavelength of 455 nm or less,
- the blue-wavelength conversion layer is provided over at least the blue light-emitting layer and is configured to convert the first blue light into second blue light having a peak wavelength that is longer than the peak wavelength of the first blue light and is 490 nm or less, and
- Sb1<Eb×Sb2 is satisfied, where Eb is energy conversion efficiency of the blue-wavelength conversion layer, where Sb1 is standard photopic luminous efficiency of the first blue light, where Sb2 is standard photopic luminous efficiency of the second blue light.
3 more elements
Dependencies are inferred from the claim text.