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Light-emitting device and method of manufacturing the same

專利號
US11996504B2
公開日期
2024-05-28
申請人
NICHIA CORPORATION(JP Anan)
發(fā)明人
Shoichi Kashihara; Masanobu Sato; Toshimasa Amiya
IPC分類
H01L33/00; H01L25/075; H01L33/48; H01L33/50; H01L33/54; H01L33/56; H01L33/30; H01L33/62; H01L33/64
技術(shù)領(lǐng)域
light,diffusing,emitting,member,agent,resin,in,silicone,phosphor,surface
地域: Anan

摘要

A light-emitting device 100 includes: a light-emitting element; a light-transmissive member covering the light-emitting element; and a light-diffusing agent contained in the light-transmissive member and comprising hollow particles. The light-transmissive member has a first surface having irregularities according to the light-diffusing agent. The first surface of the light-transmissive member has a convex shape with a height gradually increased from a peripheral portion of the first surface toward a central portion of the first surface.

說明書

The object colors of Example 1 to Example 5 and Comparative Example 1 were measured using a fast spectrophotometric colorimeter (product name: “CMS-35PS”, manufactured by Murakami Color Research Laboratory Co., Ltd.).

Differences in heights of the irregularities on the light-emitting surfaces of the light-emitting devices of Example 1 to Example 5 were measured using a stylus thickness meter (product name: “Alpha-Step IQ”, manufactured by Yamato Scientific Co., Ltd.).

Table 1 shows the evaluation results.

Table 1 shows the amounts of addition (vol %), particle sizes (μm), specific gravities (g/cm3), object colors (x, y), luminous fluxes (%), difference in heights of the irregularities (μm), and number of layers of the particles, of Example 1 to Example 5 and Comparative Example 1. The “difference in heights of the irregularities” refers to the surface roughness of the light-emitting surface of the light-transmissive member.

TABLE 1

權(quán)利要求

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