公开(公告)号：US09121576B2

公开(公告)日：2015-09-01

申请号：US14167680

申请日：2014-01-29

Applicant: Koito Manufacturing Co., Ltd.

Inventor： Yasuaki Tsutsumi ,  Masanobu Mizuno ,  Kazuhiro Ito

IPC: F21V9/08 ,  H01L33/46 ,  H01L33/50

CPC classification number: F21V9/08 ,  H01L33/46 ,  H01L33/505 ,  H01L2224/14 ,  H01L2224/16225 ,  H01L2224/73253

Abstract: In a light wavelength conversion unit, a light wavelength conversion member is placed on the emission surface of a semiconductor light-emitting element. The light wavelength conversion member converts the wavelength of blue light, which has emitted from the semiconductor light-emitting element and entered from an incident surface, so as to emit yellow light and then emits the yellow light from an emission surface. A light reflection layer is provided on a lateral face in the surface of the light wavelength conversion member. Here, the lateral face excludes the incident surface and the emission surface. The light wavelength conversion member is roughened such that an average roughness Ra of the lateral face is 0.5 μm or above.

Abstract translation: 在光波长转换单元中，将光波长转换构件放置在半导体发光元件的发射表面上。 光波长转换构件将从半导体发光元件发射并从入射表面入射的蓝色光的波长转换为发出黄色光，然后从发射表面发射黄色光。 光反射层设置在光波长转换部件的表面的侧面上。 这里，侧面不包括入射面和发射面。 光波长转换部件被粗糙化，使得侧面的平均粗糙度Ra为0.5μm以上。

公开(公告)号：US09054280B2

公开(公告)日：2015-06-09

申请号：US14203604

申请日：2014-03-11

Applicant: Koito Manufacturing Co., Ltd.

Inventor： Yuzo Maeno ,  Kazuhiro Ito ,  Osamu Kuboyama ,  Hisayoshi Daicho ,  Shogo Sugimori

IPC: H01L33/00 ,  H01L33/50 ,  H01L25/075

CPC classification number: H01L33/50 ,  H01L25/0753 ,  H01L33/504 ,  H01L2924/0002 ,  H01L2924/00

Abstract: In a light emitting module, a red phosphor is contained in a second phosphor layer so that the wavelength of a second phosphor layer after the wavelength conversion is longer than that of a first phosphor layer. And a blue phosphor and a yellow-green phosphor are contained in the first phosphor layer. The first phosphor layer is formed in an illumination area of light emitted from an LED chip, and the first phosphor layer converts the wavelength of the light from the LED chip and emits the wavelength-converted light from an emission surface. A part of the second phosphor layer is formed in a non-direct area where no light is illuminated from the LED chip and where light is illuminated from the first phosphor layer. The part of the second phosphor layer formed in the non-direct illumination area converts the wavelength of the light emitted from the first phosphor layer.

Abstract translation: 在发光模块中，在第二荧光体层中含有红色荧光体，使得波长转换后的第二荧光体层的波长比第一荧光体层的波长长。 并且在第一荧光体层中包含蓝色荧光体和黄绿色荧光体。 第一荧光体层形成在从LED芯片发射的光的照明区域中，并且第一荧光体层转换来自LED芯片的光的波长，并从发射表面发射波长转换的光。 第二荧光体层的一部分形成在从LED芯片没有光照射的非直接区域中，并且从第一荧光体层照射光。 形成在非直接照射区域中的第二荧光体层的部分转换从第一荧光体层发射的光的波长。