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:
Apr. 14, 2015
Filed:
Aug. 21, 2009
Nodoka Oyamada, Fujiyoshida, JP;
Nodoka Oyamada, Fujiyoshida, JP;
Citizen Electronics Co., Ltd., Yamanashi-ken, JP;
Abstract
A light-emitting device includes a substrate (), a light-emitting element () mounted on the substrate (), a first resin () disposed to cover an upper portion of the light-emitting element (), a second resin () disposed to cover a lower portion of the light-emitting element (), a first phosphor () contained in the first resin (), and a second phosphor () contained in the second resin (). The first phosphor () converts light emitted directly from the light-emitting element () into a first phosphor-converted light having a wavelength longer than that of the light emitted directly from the light-emitting element () and emits the first phosphor-converted light, and the second phosphor () converts the light emitted directly from the light-emitting element () into a second phosphor-converted light having a wavelength longer than that of the first phosphor-converted light and emits the second phosphor-converted light. Because both the first and second resins () have portions in contact with the light-emitting element (), respectively, the first and second phosphors () receive the light emitted directly from the light-emitting element () to convert the light emitted from the light-emitting element () into the first and second phosphor-converted lights, respectively. Positions of the first and the second resins are arranged depending on the wavelength range of light which respective phosphors can convert.