Wavelength conversion member, back light unit, image display device, resin composition for wavelength conversion, and resin cured product for wavelength conversion

Abstract

Provided are a wavelength conversion member including: a quantum dot phosphor; a white pigment including an organic substance layer that contains an organic substance, on at least a part of a surface of the white pigment; and a resin cured product including the quantum dot phosphor and the white pigment.

What is claimed is: 
     
         1 . A wavelength conversion member, comprising:
 a quantum dot phosphor;   a white pigment comprising a metal oxide layer on at least a part of the surface of the white pigment, the metal oxide layer comprising a metal oxide; and   a resin cured product comprising the quantum dot phosphor and the white pigment.   
     
     
         2 . The wavelength conversion member according to  claim 1 , wherein a content of the white pigment is from 0.1% by mass to 2.0% by mass with respect to a total amount of the resin cured product. 
     
     
         3 . The wavelength conversion member according to  claim 1 , wherein the white pigment comprises titanium oxide. 
     
     
         4 . The wavelength conversion member according to  claim 3 , wherein the titanium oxide comprises a rutile-type titanium oxide. 
     
     
         5 . The wavelength conversion member according to  claim 1 , wherein the white pigment has an average particle size of from 0.1 μm to 1 μm. 
     
     
         6 . The wavelength conversion member according to  claim 1 , wherein at least a part of the white pigment is present as primary particles. 
     
     
         7 . The wavelength conversion member according to  claim 1 , wherein a content of an inorganic substance other than the white pigment and the quantum dot phosphor is 0.5% by mass or less with respect to a total amount of the resin cured product. 
     
     
         8 . The wavelength conversion member according to  claim 1 , wherein the quantum dot phosphor comprises a compound containing at least one of Cd or In. 
     
     
         9 . A back light unit, comprising:
 the wavelength conversion member according to  claim 1 ; and   a light source.   
     
     
         10 . An image display device, comprising the back light unit according to  claim 9 . 
     
     
         11 . A wavelength conversion member, comprising:
 a quantum dot phosphor;   a white pigment comprising a metal oxide layer on at least a part of the surface of the white pigment, the metal oxide layer comprising a metal oxide; and   a resin cured product comprising the quantum dot phosphor and the white pigment,   wherein the metal oxide layer comprises a first metal oxide layer comprising silicon dioxide, and a second metal oxide layer comprising aluminum oxide.   
     
     
         12 . The wavelength conversion member according to  claim 11 , wherein a content of the white pigment is from 0.1% by mass to 2.0% by mass with respect to a total amount of the resin cured product. 
     
     
         13 . The wavelength conversion member according to  claim 11 , wherein the white pigment comprises titanium oxide. 
     
     
         14 . The wavelength conversion member according to  claim 13 , wherein the titanium oxide comprises a rutile-type titanium oxide. 
     
     
         15 . The wavelength conversion member according to  claim 11 , wherein the white pigment has an average particle size of from 0.1 nm to 1 μm. 
     
     
         16 . The wavelength conversion member according to  claim 11 , wherein at least a part of the white pigment is present as primary particles. 
     
     
         17 . The wavelength conversion member according to  claim 11 , wherein a content of an inorganic substance other than the white pigment and the quantum dot phosphor is 0.5% by mass or less with respect to a total amount of the resin cured product. 
     
     
         18 . The wavelength conversion member according to  claim 11 , wherein the quantum dot phosphor comprises a compound containing at least one of Cd or In. 
     
     
         19 . A back light unit, comprising:
 the wavelength conversion member according to  claim 11 ; and   a light source.   
     
     
         20 . An image display device, comprising the back light unit according to  claim 19 .