Semiconductor light emitting device

Abstract

This invention discloses a light emitting semiconductor device including a light-emitting structure and an external optical element. The optical element couples to the light-emitting structure circumferentially. In addition, the refractive index of the external optical element is greater than or about the same as that of a transparent substrate of the light-emitting structure, or in-between that of the transparent substrate and the encapsulant material.

1 . A semiconductor device, comprising:
 a submount comprising a first top surface, a first bottom surface, and an outmost side surface;   a light-emitting structure disposed on the submount, and having a pad;   a lead comprising a first portion and a second portion, wherein the first portion is exposed on the first top surface, and the second portion is connected to the first portion and covers the outmost side surface from the first top surface to the first bottom surface; and   an optical element surrounding the light-emitting structure in a configuration of exposing the pad and devoid of laterally contacting the second portion.   
     
     
         2 . The semiconductor device of  claim 1 , further comprising an encapsulant material covering the submount, light-emitting structure, and the optical element. 
     
     
         3 . The semiconductor device of  claim 2 , wherein the encapsulant material is connected to the light-emitting structure. 
     
     
         4 . The semiconductor device of  claim 2 , wherein the light-emitting structure comprises a second top surface, the encapsulant material connects to the second top surface. 
     
     
         5 . The semiconductor device of  claim 1 , further comprising a reflective structure formed between the optical element and the submount. 
     
     
         6 . The semiconductor device of  claim 1 , wherein the second portion is substantially perpendicular to the first portion. 
     
     
         7 . The semiconductor device of  claim 1 , wherein the optical element is not directly connected to the submount.