Patent ID: 6258699
Filing Date: 2001-07-10
Classification: H01L,Y10S

Abstract:
A method for manufacturing a light emitting diode, comprising the steps of:selecting a temporary substrate, growing an LED light emitting region on said temporary substrate and forming an LED element;selecting a permanent substrate and plating a first side of said permanent substrate with a metal bonding agent;adhering said light emitting region of said LED element to said permanent substrate by means of said metal bonding agent to form a dual substrate LED element;placing said dual substrate LED element on top of a graphite shim in a graphite lower chamber of a wafer holding device;placing a graphite pillar above said dual substrate LED element;covering said wafer holding device with a graphite upper cover, said graphite upper cover having a stainless steel screw pressing said graphite pillar, and said stainless steel screw having a thermal expansion coefficient larger than the thermal expansion coefficient of graphite;heating said dual substrate LED element in said wafer holding device, said dual substrate LED element being applied with a force because of thermal expansion of said stainless steel screw;taking said dual substrate LED element out of said wafer holding device;removing said temporary substrate from said dual substrate LED element to form a plane LED element;patterning said light emitting region of said plane LED element; andforming two ohmic contact electrodes for said plane LED element.