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    • 44. 发明公开
    • 무분극 이종 기판 및 그 제조방법, 이를 이용한 질화물계 발광 소자
    • 具有异相结构的非极性基板及其制造方法,使用其的基于氮化物的发光装置
    • KR1020140028572A
    • 2014-03-10
    • KR1020120095108
    • 2012-08-29
    • 엘지전자 주식회사
    • 정석구방규현장영학김형구전지나
    • H01L33/16H01L33/20H01L33/22
    • H01L33/16H01L21/02378H01L21/0242H01L21/02433H01L21/02458H01L21/02502H01L21/02516H01L21/0254H01L21/0262H01L21/02642H01L21/02647H01L33/007H01L33/12H01L33/20H01L33/22
    • The present invention relates to a semiconductor substrate and, more specifically, to a non-polar heterogeneous substrate, a manufacturing method thereof, and a nitride-based light emitting diode using the same. The present invention comprises an r-surface sapphire substrate, a nucleus generation layer, a first nitride semiconductor layer, a porous mask layer, and a second nitride semiconductor layer. The nucleus generation layer is positioned on the r-surface sapphire substrate and includes an a-surface or m-surface nitride semiconductor. The first nitride semiconductor layer is positioned on the nucleus generation layer and has first defect density. A plurality of pits having an inclined surface on the upper surface is positioned on the first nitride semiconductor layer. The porous mask layer is positioned on one or more pits on the first nitride semiconductor layer. The second nitride semiconductor layer is positioned on the porous mask layer and has second defect density which is lower than the first defect density. [Reference numerals] (S10) Form a nucleus generation layer; (S20) Form a first nitride semiconductor layer; (S21) Etching; (S30) Form a porous mask layer; (S40) Form a second nitride semiconductor layer
    • 本发明涉及一种半导体衬底,更具体地说,涉及一种非极性异相衬底,其制造方法和使用该衬底的氮化物系发光二极管。 本发明包括r面蓝宝石衬底,核产生层,第一氮化物半导体层,多孔掩模层和第二氮化物半导体层。 核生成层位于r面蓝宝石衬底上,并且包括a面或m面氮化物半导体。 第一氮化物半导体层位于核产生层上并具有第一缺陷密度。 在上表面上具有倾斜表面的多个凹坑位于第一氮化物半导体层上。 多孔掩模层位于第一氮化物半导体层上的一个或多个凹坑上。 第二氮化物半导体层位于多孔掩模层上,具有低于第一缺陷密度的第二缺陷密度。 (附图标记)(S10)形成核产生层; (S20)形成第一氮化物半导体层; (S21)蚀刻; (S30)形成多孔掩模层; (S40)形成第二氮化物半导体层