Lg Chem, Ltd

Daejoo Electronic Materials Co., Ltd.

Ick-Soon Kwak

Seung-Beom Cho

Sang-Soon Choi

Tae-Hyun Kwon

Kwang-Wook Choi

Jun-Yeon Cho

Hyun-Chul Ha

Do-hoon Kim

Chang-seok Ryoo

Do-Hoon Kim

The present invention relates to crystalline cerium oxide prepared in a simple, economical, and efficient manner, of which crystal structure, shape, and size can be easily adjusted and that exhibits excellent polishing properties, and a preparation method thereof. The crystalline cerium oxide can be prepared as sub-micron crystalline cerium oxide that has a mean volume diameter and a diameter standard deviation within a predetermined range.

Crystalline cerium oxide and preparation method of the same

Provided are a method for preparing a blue-emitting BAM phosphor which includes: surface-treating phosphor particles with metal oxide nanoparticles, and a blue-emitting BAM phosphor prepared by the method. The blue-emitting BAM phosphor exhibits better dispersibility and flowability in coating slurry without undergoing a reduction in initial brightness, thereby providing less color variation at ends of a BLU lamp. The blue-emitting BAM phosphor can be directly applied in a currently available method of manufacturing a BLU lamp, and when mixed with existing red and green phosphors, can remarkably reduce color variation at ends of a lamp. Therefore, the quality of a BLU lamp for large-scale displays can be greatly improved.

Method for preparing blue-emitting barium magnesium aluminate (BAM) phosphor for blacklight unit lamp, and blue-emitting BAM phosphor prepared by the method

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Daejeon, South Korea

Ick-Soon Kwak