Patent ID: 8362496
Filing Date: 2013-01-29
Classification: H01L

Abstract:
1. An optical module package unit, comprising: a substrate defining a light-emitting zone and a light-sensing zone; a light-emitting chip installed in said light-emitting zone of said substrate; a light sensor chip installed in said light-sensing zone of said substrate; a lid being a plastic shell mounted at said substrate, said lid comprising a light-emitting hole and a light-sensing hole, said light-emitting hole comprising an annular reflective layer covered on an inside wall thereof that has an inner diameter increasing gradually in direction from a bottom side toward a top side thereof and forming a first cavity on said substrate around said light-emitting chip, said light-sensing hole being a stepped hole formed of a first hole portion and a second hole portion and disposed at one lateral side relative to said light-emitting hole, said first hole portion and said second hole portion being kept in communication with each other and having different diameters, said second hole portion forming a second cavity on said substrate around said light sensor chip; and two packaging adhesive structures respectively molded in said first cavity and said second cavity on said substrate to encapsulate said light-emitting chip and said light sensor chip respectively.