专利名称：Light emitting device having a composition
modulation layer of unequal amounts of atunequal
least two elements between an n-type
contact layer and a transparent electrode
发明人：Masato Sawada,Akihiro Ooishi
申请号：US11535289
申请日：20060926
公开号：US07851824B2
公开日：
20101214
专利内容由知识产权出版社提供
专利附图：
摘要：A light emitting device includes: a light emitting layer; an n-type contact layer
made of a compound provided on the light emitting layer; a composition modulation layer provided on the n-type contact layer; and a transparent electrode provided on the composition modulation layer. The composition modulation layer consists of a plurality of elements which constitute the compound. A composition ratio of one of the plurality of elements is higher in the composition modulation layer than in the compound. Alternatively, the light emitting device includes: a light emitting layer; an n-type contact layer made of a compound provided on the light emitting layer; a metal layer provided on the n-type contact layer; and a transparent electrode provided on the metal layer. The metal layer is made of a metal having a lower work function than the compound.
申请人：Masato Sawada,Akihiro Ooishi
地址：Kanagawa-ken JP,Kanagawa-ken JP
国籍：JP,JP
代理机构：Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
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