Patent ID: 9537065
Date: 2017-01-03
CPC Classifications: H01L

Claim:
1. A light emitting device comprising: a white resin molding package comprising a reflective wall, the reflective wall comprising an inner side surface which tapers to define a cavity; a first lead frame comprising a top surface and a back surface, the top surface including, within the cavity, a light emitting element arrangement region and a first terminal connection region; a second lead frame located away from the first lead frame in a first direction and comprising a top surface and a back surface, the top surface including, within the cavity, a second terminal connection region; and a light emitting element mounted on the light emitting element arrangement region of the first lead frame, the light emitting element comprising a first terminal and a second terminal which are respectively connected to the first terminal connection region of the first lead frame and the second terminal connection region of the second lead frame by wire bonding, wherein the first lead frame comprises, on its top surface side, a first step portion which is receded from the light emitting element arrangement region and the first terminal connection region of the top surface thereof, but which does not penetrate the first lead frame, the first step portion is provided at least around the light emitting element arrangement region and between the light emitting element arrangement region and the first terminal connection region, the first step portion is filled with white resin, wherein a surface of the white resin, in the cavity, is level with the light emitting element arrangement region and the first terminal connection region of the top surface of the first lead frame and functions as a reflective surface, the light emitting element arrangement region and the first terminal connection region of the top surface of the first lead frame, the surface of the white resin level with these regions, and the second terminal connection region of the top surface of the second lead frame define a part of a bottom surface of the cavity of the package, the reflective wall includes first and second reflective wall sections opposed to each other in the first direction, and third and fourth reflective wall sections opposed to each other in a second direction intersecting with the first direction, the first terminal connection region of the first lead frame is partially covered with the first reflective wall section, and the first step portion between the light emitting element arrangement region and the first terminal connection region of the first lead frame extends in the second direction such that the white resin filled in the first step portion extends both to the third reflective wall section and to the fourth reflective wall section.