LIGHT SCATTERING SHEET
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United States of America Patent
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Issued Date -
Nov 21, 2019
app pub date -
Jan 19, 2018
filing date -
Jan 19, 2018
priority date (Note) -
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Abstract
A light scattering sheet (light scattering body) is constituted of a molded resin body in which light scattering particles are distributed in a resin. The light scattering particles are particles of a phosphate of a rare earth element. The surface area of the light scattering particles per unit volume of the molded resin body is not greater than 0.600 m2/cm3. Preferably, the cumulative-volume particle diameter D50 of the light scattering particles with a cumulative volume of 50 vol %, obtained by using the laser diffraction/scattering particle-size-distribution measurement method, is 0.1-20 μm. Also preferably, the value of D99/D50, which is the ratio of D99 to D50 of the light scattering particles, where D99 signifies the cumulative-volume particle diameter with a cumulative volume of 99 vol %, obtained by using the laser diffraction/scattering particle-size-distribution measurement method, is not greater than 10.
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