Patent ID: 8222063
Filing Date: 2012-07-17
Classification: H01L

Abstract:
1. A method for fabricating a light-emitting diode (LED), the method comprising: fabricating an InGaAlN-based multilayer LED structure on a conductive substrate, which involves: forming a growth substrate; depositing the InGaAlN-based multilayer LED structure on the growth substrate; depositing a metal bonding layer on the InGaAlN-based multilayer LED structure; preparing a metal bonding layer on the conductive substrate; bonding the InGaAlN-based multilayer LED structure with the conductive substrate; and removing the growth substrate; thereafter etching grooves of a predetermined pattern through an active region of the InGaAlN-based multilayer LED structure on the conductive substrate, thereby resulting in mesas on the conductive substrate, wherein the grooves separate a light-emitting region from non-light-emitting regions; depositing electrode material on the light-emitting and non-light-emitting regions, thereby creating an electrode; depositing a passivation layer covering the light-emitting and non-light-emitting regions; and removing the passivation layer on the electrode to allow the non-light-emitting regions which are covered with the electrode material and the passivation layer to be higher than the light-emitting region and the electrode, thereby protecting the light-emitting region from contact with test equipment.