发明授权
- 专利标题： Light emitting device using light emitting element and driving method of light emitting element, and lighting apparatus
- 专利标题（中）： 使用发光元件的发光装置和发光元件的驱动方法以及照明装置
-
申请号： US11197371申请日： 2005-08-05
-
公开(公告)号： US08248392B2公开(公告)日： 2012-08-21
- 发明人: Shunpei Yamazaki , Satoshi Seo , Hiroko Abe
- 申请人： Shunpei Yamazaki , Satoshi Seo , Hiroko Abe
- 申请人地址： JP Atsugi-shi, Kanagawa-ken
- 专利权人： Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人： Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人地址： JP Atsugi-shi, Kanagawa-ken
- 代理机构： Fish & Richardson P.C.
- 优先权： JP2004-236158 20040813
- 主分类号： G09G5/00
- IPC分类号： G09G5/00
摘要：
It is an object of the present invention to provide a light-emitting device including a light-emitting element with smaller luminance degradation by contriving a driving means. In addition, it is an object of the present invention to provide a driving method for reducing luminance degradation of a light-emitting element.In the present invention, the current density J of a current flowing in a light-emitting element is increased with time in accordance with the following formula (1), where J0 is an initialization of current density in the light-emitting element, t is an emitting time, and k and β are individually a positive parameter determined by characteristics of the light-emitting element. J=J0·exp [(k·t)β] (1)
公开/授权文献
信息查询
