The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2011
Filed:
Oct. 25, 2007
Takao Haruna, Aichi-ken, JP;
Akio Namiki, Aichi-ken, JP;
Mitsuhiro Inoue, Aichi-ken, JP;
Toyoda Gosei Co., Ltd., Nishikasugai-gun, Aichi-ken, JP;
Abstract
A light emitting device has a light emitting element, and a high-refractive index layer that contacts an emission surface of the light emitting element. The high-refractive index layer has transparent fine particles uniformly arranged along the emission surface. The fine particles has a refractive index high than that of a material composing the emission surface of the light emitting element. Otherwise, a light emitting device has a light emitting element, a sealing material for sealing the light emitting element, and a high-refractive index layer that contacts an emission surface of the light emitting element. The fine particles has a refractive index high than that of a material composing the emission surface of the light emitting element and that of the sealing material. A phosphor may be included in the sealing material which is adapted to emit a wavelength-converted light by being excited by a light emitted from the light emitting element. The phosphor may have a same matrix as the fine particles, and it may be formed spherical. The light emitting element may be a face-up type light emitting element or a flip-chip type light emitting element.