Title:
METHOD FOR PRODUCING SURFACE-TREATED PHOSPHOR PARTICLE AND SURFACE-TREATED PHOSPHOR PARTICLE
Document Type and Number:
Japanese Patent JP2010275426
Kind Code:
A
Abstract:
To sufficiently maintain the initial luminance as well as to sufficiently suppress decrease in the luminance due to thermal hysteresis imposed on phosphor particles in a stage of manufacturing various types of devices using the phosphor particles.
A method for producing surface-treated phosphor particles is provided, which includes a step of mixing an aqueous solution containing lanthanum and an aqueous solution containing phosphoric acid in the presence of phosphor particles and forming, in the obtained dispersion liquid, surface-treated phosphor particles comprising the phosphor particles and lanthanum phosphate depositing on the surfaces of the particles.
Inventors:
KAWAKAMI YOSHITAKA
UMEDA TETSU
UMEDA TETSU
Application Number:
JP2009129305A
Publication Date:
December 09, 2010
Filing Date:
May 28, 2009
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C09K11/08; C09K11/59; C09K11/64
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Takashi Mikami
Hideki Okita
Yoshinori Shimizu
Takashi Mikami
Hideki Okita