公开(公告)号：US09856418B2

公开(公告)日：2018-01-02

申请号：US14803566

申请日：2015-07-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Takuya Kitabatake ,  Fusaki Fujibayashi ,  Hiroko Endo ,  Masahide Yamada ,  Takatoshi Seto

IPC: C09K11/08 ,  C09K11/59 ,  H01L33/00 ,  C09K11/77

CPC classification number: C09K11/7734 ,  C09K11/7792

Abstract: Disclosed is a phosphor including at least one of a nitride and an oxynitride, wherein the nitride and the oxynitride contain an alkaline-earth metal element, silicon, and an activator element. wherein the phosphor has a volume average particle diameter of greater than or equal to about 50 nm and less than or equal to about 400 nm and an inner quantum efficiency of greater than or equal to about 60% at an excitation wavelength of about 450 nm. The method of preparing a phosphor includes a precursor preparation process of preparing a phosphor precursor particles including a silicon nitride particles, a compound containing an alkaline-earth metal element, and a compound containing an activator element, wherein the compound containing an alkaline-earth metal element and the compound containing an activator element are deposited on the surface of the silicon nitride particles; and a firing process of firing the phosphor precursor particles.

公开(公告)号：US10139743B2

公开(公告)日：2018-11-27

申请号：US15408887

申请日：2017-01-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Takuya Kitabatake ,  Fusaki Fujibayashi ,  Hiroko Endo ,  Masahide Yamada ,  Kensuke Kubo

IPC: G03G9/09 ,  G03G9/087 ,  G03G9/08

Abstract: A toner for developing electrostatic images includes a binder, a colorant, iron, silicon, and sulfur. The colorant includes a phosphor and a non-fluorescent colorant. The phosphor includes either one or both of a nitride and an oxynitride each including an alkaline-earth metal, silicon, and an activator element. A volume average particle diameter of the phosphor is greater than or equal to about 50 nm and less than or equal to about 400 nm. An internal quantum efficiency of the phosphor at an excitation wavelength of 450 nm is greater than or equal to about 60%.

公开(公告)号：US10100249B2

公开(公告)日：2018-10-16

申请号：US15353062

申请日：2016-11-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Takuya Kitabatake ,  Fusaki Fujibayashi ,  Hiroko Endo ,  Masahide Yamada

IPC: C09K11/08 ,  C09K11/59 ,  H01L33/00 ,  C09K11/77 ,  C04B35/584 ,  C01B21/06 ,  C04B35/626 ,  H01L33/50

Abstract: A phosphor includes a nitride including an alkaline-earth metal element, silicon, and an activator element, wherein the phosphor has a volume average particle diameter ranging from about 50 nm to about 400 nm, and an internal quantum efficiency of greater than or equal to about 60% at an excitation wavelength of 450 nm, the phosphor is represented by a formula M2Si5N8, the M includes one or more alkaline-earth metal element selected from Ca, Sr, Ba, and Mg and including at least Sr, and one or more activator element selected from Eu and Ce and including at least Eu, an amount of the Sr included in the phosphor is about 15 mol % to about 99 mol % based on total moles of the M, and an amount of the activator element included in the phosphor is about 1 mol % to 20 mol % based on the total moles of the M.

公开(公告)号：US09360784B2

公开(公告)日：2016-06-07

申请号：US14593789

申请日：2015-01-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Fusaki Fujibayashi ,  Takuya Kitabatake ,  Takatoshi Seto

IPC: G03G9/09

CPC classification number: G03G9/0902 ,  G03G9/091 ,  G03G9/092 ,  G03G9/0926

Abstract: A magenta toner for developing electrostatic latent images, wherein the magenta toner includes a magenta toner particle having a polymer binder and a colorant, wherein the colorant includes a magenta pigment or dye and a visible light-excitable nitride fluorescent substance.

Abstract translation: 用于显影静电潜像的洋红色调色剂，其中品红色调色剂包括具有聚合物粘合剂和着色剂的品红色调色剂颗粒，其中着色剂包括品红色颜料或染料和可见光可激发氮化物荧光物质。