Patent ID: 8013322

Claim:
A light-emitting diode device, comprising: a substrate; a buffer layer on said substrate; a confining layer of a first type of electrical conductivity on said buffer layer; an active layer on said confining layer; a first confining layer of a second type of electrical conductivity on said active layer; a first electrically conductive contact layer on said first confining layer; a second confining layer of said second type of electrical conductivity patterned and located on said first electrically conductive contact layer; a second electrically conductive contact layer patterned and located on said second confining layer; a transparent electrically conductive layer on said second electrically conductive contact layer, said transparent electrically conductive layer having a plurality of contacts passing through said second electrically conductive layer and said second confining layer to electrically contact with said first electrically conductive contact layer; a first electrically conductive electrode on said confining layer; and a second electrically conductive electrode on said transparent electrically conductive layer, wherein said first electrically conductive contact layer and said second electrically conductive contact layer are selected from any one of the following materials: heavy-doped P ++ -type or N ++ -type nitrides of group IIIA, heavy-doped P ++ -type or N ++ -type materials of group IIA-VA having an element of group IIA selected from beryllium (Be), magnesium (Mg) and calcium (Ca) and an element of group VA selected from nitrogen (N), arsenic (As), phosphorous (P) and antimony (Sb), and heavy-doped P ++ -type or N ++ -type materials of group IIA-VIA having an element of group VIA selected from oxygen (O), sulfur (S), selenium (Se), tellurium (Te) and polonium (Po).