Patent ID: 7645643
Filing Date: 2010-01-12
Classification: H01L

Abstract:
1. A method of making an optical semiconductor device, comprising: providing a holder composed of a hard resin that includes an aperture and a lead frame located therein; connecting a semiconductor chip to the lead frame; injecting a soft resin softer than said hard resin into the aperture to seal the semiconductor chip thereby forming a space below the semiconductor chip in the aperture allowing stress caused by the soft resin expanded when at high temperature to be released from the space; providing a second hard resin structure adjacent a top portion of the holder, said second hard resin being harder than said soft resin, wherein the second hard resin structure covers and is located on an upper portion of the soft resin; and blocking a surface of the soft resin that opposes the space below the semiconductor chip by placing the second hard resin structure at a location such that the hard resin and the second hard resin structure prevents the soft resin from expanding in a direction away from the space below the semiconductor chip while simultaneously allowing the soft resin when at high temperature to expand in a direction towards and into the space below the semiconductor chip.