Patent ID: 9238317
Filing Date: 2016-01-19
CPC Classification: B29C,B29K,B29L,H01L

Claim Text:
1. An LED mounting substrate, comprising: a lead frame; a base disposed on the lead frame and having a cavity, a bottom of the cavity having an opening for exposing a portion of the lead frame, a cross-sectional area of the cavity increasing along a direction from the lead frame to a top surface of the base; and a residue of injection molding material disposed on one of outer walls of the base surrounding the cavity, a cross-sectional area of the residue of injection molding material decreasing along a direction from the lead frame to the top surface of the base, wherein a cross section of the cavity is asymmetrical about a central line of the outer wall that the residue of injection molding material is disposed on, and the central line crosses the residue of injection molding material, and a cross section of the residue of injection molding material is asymmetrical, wherein a cross section of the cavity is divided as a first area and a second area by the central line of the outer wall that the residue of injection molding material is disposed on, and a cross section of the residue of injection molding material is divided as a third area and a fourth area by the central line of the outer wall that the residue of injection molding material is disposed on, wherein the first area and the third area are positioned on one side of the central line, and the second area and the fourth area are positioned on another side of the central line, wherein the first area is greater than the second area, and the fourth area is greater than the third area.