Wavelength conversion member and backlight unit
AssigneeFUJIFILM Corporation
InventorTakashi YONEMOTO
Life of this patent
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Abstract
Provided are a wavelength conversion member which contains a phosphor such as a quantum dot and has high reproducibility of white light; and a backlight unit. The wavelength conversion member includes a wavelength conversion layer having a resin layer that is provided with a plurality of concave portions which are discretely disposed on one main surface thereof; and a plurality of fluorescent regions containing phosphors, which are disposed in the concave portions formed in the resin layer, in which a surface roughness Ra of a surface of the resin layer on a side where the concave portions are formed is 0.3 to 5 μm.
Claims16
A wavelength conversion member that absorbs at least a part of incident excitation light, converts the absorbed light into light having a wavelength different from the wavelength of the excitation light, and emits the wavelength-converted light, the wavelength conversion member comprising:
- a wavelength conversion layer having a resin layer that is provided with a plurality of concave portions which are discretely disposed on one main surface thereof;
- and a plurality of fluorescent regions containing phosphors, which are disposed in the concave portions formed in the resin layer,
- wherein a surface roughness Ra of a surface of the resin layer on a side where the concave portions are formed is 0.3 to 5 μm.
Dependencies are inferred from the claim text.