LED LIGHT-EMITTING ELEMENT

• US 20170040514A1
• Filed: 08/02/2016
• Published: 02/09/2017
• Est. Priority Date: 08/03/2015
• Status: Active Grant

• Current Assignee: Citizen Electronics Company Limited, Citizen Holdings Co., Ltd.
• Original Assignee: Citizen Electronics Company Limited, Citizen Holdings Co., Ltd.
• Inventors: Yasuhara, Makoto, Watanabe, Yusuke
• Granted Patent: US 9,786,826 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48465 the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
• CPC Class Codes: H01L 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/181 Encapsulation
• CPC Class Codes: H01L 33/505 characterised by the shape, e.g. plate or foil
• CPC Class Codes: H01L 33/60 Reflective elements

Abstract

An LED light-emitting element having reduced the occurrence of illuminance unevenness is provided. A light-emitting element comprising a substrate, an LED element mounted on the substrate, a phosphor resin arranged on the substrate so as to seal the LED element and having an emission surface from which light based on light emitted from the LED element is emitted, a reflective resin arranged around the phosphor resin; and a reflecting frame having an opening and at least part of which is arranged on the reflective resin, wherein the reflective resin is arranged directly under the reflecting frame and on the side surface of the phosphor resin, the ratio of the area of the emission surface to the area of an inside area of the reflecting frame is set to 80% or higher, and in the inside area of the reflecting frame, the reflective resin is exposed around the emission surface.

Claims

1. A light-emitting element comprising:

a substrate;

an LED element mounted on the substrate;

a phosphor resin arranged on the substrate so as to seal the LED element and having an emission surface from which light based on light emitted from the LED element is emitted;

a reflective resin arranged around the phosphor resin; and

a reflecting frame having an opening and at least part of which is arranged on the reflective resin, wherein

the reflective resin is arranged directly under the reflecting frame and on the side surface of the phosphor resin,

the ratio of the area of the emission surface to the area of an inside area of the reflecting frame is set to 80% or higher, and

in the inside area of the reflecting frame, the reflective resin is exposed around the emission surface.