Patent ID: 6946312

Claim:
A method of manufacturing a semiconductor light emitting device, said method comprising: (i) preparing a support substrate by: preparing a first substrate; forming a ball-up prevention layer on the first substrate; and forming a bonding layer made of eutectic material on the ball-up prevention layer; (ii) preparing a device substrate by: preparing a second substrate; forming a semiconductor light emitting structure on the second substrate; forming a first electrode on at least a partial surface area of the semiconductor light emitting structure; forming a barrier layer on a surface including an upper surface of the first electrode; and forming a metal layer on the barrier layer; (iii) bonding together the bonding layer of the support substrate and the metal layer of the device substrate to obtain a bonded structure; (iv) removing the second substrate from the bonded structure; and (v) forming a second electrode on a partial surface area of the semiconductor light emitting structure on a surface exposed by the removal of the second substrate from the bonded structure; wherein when the bonding layer of the support substrate and the metal layer of the device substrate are bonded together, the eutectic material of the bonding layer forms a eutectic with the metal layer to bond together the support substrate and the device substrate; wherein the ball-up prevention layer prevents ball-up of the bonding layer; and wherein the barrier layer prevents at least one component of a material of the first electrode from diffusing into the barrier layer and prevents the eutectic material of the bonding layer from intruding into the first electrode.