Patent ID: 11923488
Assignee: NICHIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A light emitting device comprising:
a light emitting element having a top surface; and
a light-transmissive member covering at least the top surface of the light emitting element, the light-transmissive member having a principal surface located above the top surface of the light emitting element; wherein:
the principal surface of the light-transmissive member comprises a plurality of concave portions;
an absorption, corresponding to Si—OH, appearing in an absorption spectrum by the light-transmissive member, in a wave number range greater than 3700 cm−1 and less than 3000 cm−1, is larger than an absorption appearing in an absorption spectrum by a silicone resin, in the wave number range greater than 3700 cm−1 and less than 3000 cm−1; and
absorption peaks, corresponding to Si—CH3, appearing in the absorption spectrum by the light-transmissive member, at a wave number of 2960 cm−1 or in a vicinity thereof and at a wave number of 800 cm−1 or in a vicinity thereof, are respectively lower than absorption peaks appearing in the absorption spectrum by the silicone resin, at the wave number of 2960 cm1 or in the vicinity thereof and at the wave number of 800 cm−1 or in the vicinity thereof, the absorption spectra being obtained by infrared spectroscopy.