Patent ID: 6599768
Filing Date: 2003-07-29
Classification: H01L

Abstract:
A method of surface mounting for light emitting elements having p-type electrodes and n-type electrodes thereof on one side, said method comprising the steps of:providing an electrical and thermal conductive substrate; forming a plurality of trenches in said substrate; refilling said trenches with an insulating layer; forming first metal contact pairs on an upper surface of said substrate, wherein each of said first metal contact pairs has one formed on the left hand side and the other formed on the right hand side of each of said trenches for attaching a light emitting element; backside milling a bottom surface of said substrate until bottoms of said trenches are all exposed, and thus to isolate two first metal contacts for each first metal contact pair; forming second metal contact pairs on said milled bottom surface, wherein each of said second metal contact pair has one formed on the left hand side and the other formed on the right hand side of each of said trenches for connecting external electrodes; mounting a reflective frame assembler having a plurality of reflective frame therein on said upper surface, wherein each of said reflective frame corresponds to one light emitting element so that each of said first metal contact pairs has one reflective frame surrounding, and has a central position thereof aligned with a central position of said reflective frame; placing said light emitting elements each within said reflective frame and having its p-type electrode and n-type electrode, respectively, onto said first metal contact pair which is surrounded by said reflective frame; sealing said light emitting elements with a transparent resin or epoxy layer within said reflective frame; and separating said substrate into an individual device, wherein each device has one encapsulated light emitting element therein and has two second metal contact isolated by one trench.