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:
Oct. 01, 2019
Filed:
Jan. 11, 2017
Citizen Electronics Co., Ltd., Fukiyoshida-shi, Yamanashi, JP;
Citizen Watch Co., Ltd., Nishitokyo-shi, Tokyo, JP;
Sadato Imai, Yamanashi, JP;
Tatsuya Katoh, Ebina, JP;
Masahiro Watanabe, Yamanashi, JP;
Kazuki Matsumura, Fuefuki, JP;
CITIZEN ELECTRONICS CO., LTD., Fujiyoshida-Shi, Yamanashi, JP;
CITIZEN WATCH CO., LTD., Nishitokyo-Shi, Tokyo, JP;
Abstract
Provided is a light-emitting device and a method for manufacturing the same which avoid a distinct color unevenness during the light emission even if variations are present among the light-emitting elements in the concentration of the phosphor that precipitates in the resin for sealing the light-emitting elements. The light-emitting device includes a substrate, a plurality of light-emitting elements that are mounted on the substrate, a first resin layer that integrally seals the light-emitting elements and includes a first phosphor that is excited by light from the light-emitting elements at a concentration that is high as it goes to a lower end near the substrate from an upper end distant from the substrate, and a second resin layer that is provided at an upper side of the first resin layer and includes a second phosphor that is excited by light from the light-emitting elements at a uniform concentration.