Wavelength conversion member and method for manufacturing the same

A technology of wavelength conversion and wavelength conversion materials, which is applied in the field of wavelength conversion components and its manufacturing, can solve problems such as color deviation and deterioration, and achieve the effect of reducing color deviation

Pending Publication Date: 2021-10-01
NICHIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are cases where the color deviation in the light emitting surface in the wavelength conversion member becomes worse

Method used

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  • Wavelength conversion member and method for manufacturing the same
  • Wavelength conversion member and method for manufacturing the same
  • Wavelength conversion member and method for manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0116] Next, an embodiment of a wavelength converting member was fabricated. Here, the wavelength conversion member of the example was fabricated at a given compounding ratio. Specifically, the resin 10, the phosphor 9, the filler 20 (silica), and the filler (alumina) different from the filler 20 are mixed, and the phosphor paste obtained is screen printed on the translucent member 4. The entire surface, that is, one main surface is coated with phosphor layer 3 . Regarding Examples 1 to 3, phosphor 9 used Y 3 (Al,Ga) 5 o 12 : Phosphor 1 and Phosphor 2 represented by Ce (It should be noted that the emission peak wavelength of Phosphor 1 is around 540nm, and the emission peak wavelength of Phosphor 2 is around 535nm.), (Sr, Ca)AlSiN 3 : Phosphor 3 represented by Eu These three phosphors. Regarding the compounding ratio of the phosphors in Examples 1 to 3, the phosphor 1 was 21.75% by mass, the phosphor 2 was 65.25% by mass, and the phosphor 3 was 13% by mass. As resin 10, ...

Embodiment 4～5

[0123] On the other hand, as Example 4, except that the compounding ratio of the phosphor is 22.08% by mass for the phosphor 1, 66.23% by mass for the phosphor 2, and 11.7% by mass for the phosphor 3, it is the same as that of Examples 1 to 3. 3. A wavelength conversion member was produced in the same manner. In Example 4, regarding the content of the phosphor in the phosphor layer 3, the resin is set to 100 parts by mass, and the content obtained by adding the contents of the above three kinds of phosphors is 250 parts by mass. Silicon oxide is 70 parts by mass, filler (alumina) different from filler 20 is 5.3 parts by mass, and the mixing volume ratio of phosphor and filler 20 to resin, (silica+phosphor) / resin is 0.93, also in Within the range of 0.5 or more and 1.0 or less. The standard deviation (mean value) of the hue x was 0.0033, which was almost equivalent to Example 3.

[0124] In addition, as Example 5, the compounding ratio of the phosphor was the same as in Examp...

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Abstract

An object of the present invention is to provide a wavelength conversion member and a method for manufacturing the same, which improve the color deviation of a light emitting surface. The solution is a wavelength conversion member (30) which is provided with a wavelength conversion material, and a light transmission member (4) provided with a wavelength conversion material on one surface, wherein the wavelength conversion material is formed by mixing a resin (10), a phosphor (9), and a filler (20), wherein the content of the phosphor (9) is 165 parts by mass or less and 400 parts by mass or less, the median particle size is 10 [mu] m or more and 30 [mu] m, the content of the filler (20) is 5 parts by mass and 90 parts by mass, and the median particle size is 5 [mu] m or more and 40 [mu] m or less. The mixing volume ratio of the phosphor (9) and the filler (20) relative to the resin (10), the phosphor (9) and the filler (20) is 0.5 or less.

Description

technical field [0001] The present application relates to a wavelength converting member and a manufacturing method thereof. Background technique [0002] A light-emitting device that combines a light-emitting element and a phosphor to emit mixed-color light is used in applications such as lighting devices and liquid crystal backlights. [0003] In such a light emitting device, for example, as disclosed in Patent Document 1, a configuration in which a wavelength converting member is disposed on a light extraction surface of a light emitting element is employed. The light emitted from the light-emitting element passes through the wavelength conversion member, and a part of the light is wavelength-converted to be emitted as light with different wavelengths. The wavelength conversion member is composed of, for example, a resin containing a phosphor and a binder. [0004] However, there are cases where the color deviation within the light emitting surface in the wavelength con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L25/16H01L33/48H01L33/60
CPCH01L33/501H01L25/167H01L33/48H01L33/60H01L2933/0041C09K11/7774C09K11/77348C09K11/77342C09K11/615C09K11/616H01L33/502C09K11/02H01L33/005H01L33/10H01L33/504
Inventor 松家衣里岩浅真规子
Owner NICHIA CORP
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