Patent ID: 11862760
Assignee: NICHIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A light emitting device, comprising:
a substrate;
a light emitting element provided on the substrate, the light emitting element being configured to emit first light;
a wavelength conversion layer provided on the light emitting element, the wavelength conversion layer being configured to convert a wavelength of a part of the first light to emit second light; and
a wall containing a light reflective material, the wall surrounding the wavelength conversion layer and including an opening portion exposing at least a part of a top surface of the wavelength conversion layer, wherein
a surface of the wall includes a top surface provided at a higher position than the top surface of the wavelength conversion layer, and an inner surface forming the opening portion,
the wall includes a first portion surrounding the wavelength conversion layer, and a second portion provided over the first portion and surrounding the first portion,
the opening portion is hollow,
an angle of a corner portion between the top surface and the inner surface of the wall is in a range of 90 degrees or greater and less than 180 degrees,
the wall contains a base material formed of a resin material, and a filler formed of the light reflective material and dispersed in the base material, and wherein
a density of the filler contained in the first portion is higher than a density of the filler contained in the second portion.