发明申请
- 专利标题: LIGHT-EMITTING DEVICE
- 专利标题(中): 发光装置
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申请号: US11160354申请日: 2005-06-21
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公开(公告)号: US20050285136A1公开(公告)日: 2005-12-29
- 发明人: Chen Ou , Ting-Yang Lin , Shih-Kuo Lai
- 申请人: Chen Ou , Ting-Yang Lin , Shih-Kuo Lai
- 优先权: TW093118481 20040624
- 主分类号: H01L31/00
- IPC分类号: H01L31/00 ; H01L33/22 ; H01L33/00
摘要:
A light-emitting device includes a substrate, a first nitride semiconductor stack formed on the substrate, a nitride light-emitting layer formed on the first nitride semiconductor stack, a second nitride semiconductor stack formed on the nitride light-emitting layer, and a first transparent conductive oxide layer formed on the second nitride semiconductor stack. The second nitride semiconductor stack includes a plurality of hexagonal-pyramid cavities formed in an upper surface of the second nitride semiconductor stack. The plurality of hexagonal-pyramid cavities of the second nitride semiconductor stack are filled with the first transparent conductive oxide layer, and a low-resistance ohmic contact is generated at the inner surfaces of the plurality of hexagonal-pyramid cavities so as to decrease the operation voltage and improve light-emitting efficiency of the light-emitting device.
公开/授权文献
- US07385226B2 Light-emitting device 公开/授权日:2008-06-10