US 2013/0154467 A1 · LIGHT-EMITTNG DEVICE

Abstract

A light-emitting device includes a first lead frame, a light-emitting element fixed to the first lead frame, and a second lead frame electrically connected via a metal wire to the light-emitting element. In addition, the light-emitting device includes a resin that covers the first lead frame, the light-emitting element, and the second lead frame, and functions as a transmission medium for light emitted from the light-emitting element. The resin has a side surface which is perpendicular to the face to which the light-emitting element has been fixed, and an upper surface. The resin surfaces are configured so that the angle of incidence of a portion of the light emitted from the light-emitting element to the side surfaces is larger than a critical angle needed for total reflection of the light incident on the side surfaces.

Claims20

Dependent claims

A light-emitting device, comprising:

a first lead frame;
a light-emitting element fixed to the first lead frame;
a second lead frame electrically connected to the light-emitting element;
and
a resin that covers the first lead frame, the light-emitting element, and the second lead frame, and has a side surface perpendicular to a face of the first lead frame to which the light-emitting element is fixed, where the angle of incidence of a portion of light emitted from the light-emitting element to the side surfaces is larger than the critical angle for total reflection at the side surface.

2 more elements

Dependencies are inferred from the claim text.

Light-emittng device

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Light-emittng device

Life of this patent

Abstract

Claims20